drivers/scsi/qla4xxx/ql4_os.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * QLogic iSCSI HBA Driver
   4  * Copyright (c)  2003-2013 QLogic Corporation
   5  */
   6 #include <linux/moduleparam.h>
   7 #include <linux/slab.h>
   8 #include <linux/blkdev.h>
   9 #include <linux/iscsi_boot_sysfs.h>
  10 #include <linux/inet.h>
  11
  12 #include <scsi/scsi_tcq.h>
  13 #include <scsi/scsicam.h>
  14
  15 #include "ql4_def.h"
  16 #include "ql4_version.h"
  17 #include "ql4_glbl.h"
  18 #include "ql4_dbg.h"
  19 #include "ql4_inline.h"
  20 #include "ql4_83xx.h"
  21
  22 /*
  23  * Driver version
  24  */
  25 static char qla4xxx_version_str[40];
  26
  27 /*
  28  * SRB allocation cache
  29  */
  30 static struct kmem_cache *srb_cachep;
  31
  32 /*
  33  * Module parameter information and variables
  34  */
  35 static int ql4xdisablesysfsboot = 1;
  36 module_param(ql4xdisablesysfsboot, int, S_IRUGO | S_IWUSR);
  37 MODULE_PARM_DESC(ql4xdisablesysfsboot,
  38                  " Set to disable exporting boot targets to sysfs.\n"
  39                  "\t\t  0 - Export boot targets\n"
  40                  "\t\t  1 - Do not export boot targets (Default)");
  41
  42 int ql4xdontresethba;
  43 module_param(ql4xdontresethba, int, S_IRUGO | S_IWUSR);
  44 MODULE_PARM_DESC(ql4xdontresethba,
  45                  " Don't reset the HBA for driver recovery.\n"
  46                  "\t\t  0 - It will reset HBA (Default)\n"
  47                  "\t\t  1 - It will NOT reset HBA");
  48
  49 int ql4xextended_error_logging;
  50 module_param(ql4xextended_error_logging, int, S_IRUGO | S_IWUSR);
  51 MODULE_PARM_DESC(ql4xextended_error_logging,
  52                  " Option to enable extended error logging.\n"
  53                  "\t\t  0 - no logging (Default)\n"
  54                  "\t\t  2 - debug logging");
  55
  56 int ql4xenablemsix = 1;
  57 module_param(ql4xenablemsix, int, S_IRUGO|S_IWUSR);
  58 MODULE_PARM_DESC(ql4xenablemsix,
  59                  " Set to enable MSI or MSI-X interrupt mechanism.\n"
  60                  "\t\t  0 = enable INTx interrupt mechanism.\n"
  61                  "\t\t  1 = enable MSI-X interrupt mechanism (Default).\n"
  62                  "\t\t  2 = enable MSI interrupt mechanism.");
  63
  64 #define QL4_DEF_QDEPTH 32
  65 static int ql4xmaxqdepth = QL4_DEF_QDEPTH;
  66 module_param(ql4xmaxqdepth, int, S_IRUGO | S_IWUSR);
  67 MODULE_PARM_DESC(ql4xmaxqdepth,
  68                  " Maximum queue depth to report for target devices.\n"
  69                  "\t\t  Default: 32.");
  70
  71 static int ql4xqfulltracking = 1;
  72 module_param(ql4xqfulltracking, int, S_IRUGO | S_IWUSR);
  73 MODULE_PARM_DESC(ql4xqfulltracking,
  74                  " Enable or disable dynamic tracking and adjustment of\n"
  75                  "\t\t scsi device queue depth.\n"
  76                  "\t\t  0 - Disable.\n"
  77                  "\t\t  1 - Enable. (Default)");
  78
  79 static int ql4xsess_recovery_tmo = QL4_SESS_RECOVERY_TMO;
  80 module_param(ql4xsess_recovery_tmo, int, S_IRUGO);
  81 MODULE_PARM_DESC(ql4xsess_recovery_tmo,
  82                 " Target Session Recovery Timeout.\n"
  83                 "\t\t  Default: 120 sec.");
  84
  85 int ql4xmdcapmask = 0;
  86 module_param(ql4xmdcapmask, int, S_IRUGO);
  87 MODULE_PARM_DESC(ql4xmdcapmask,
  88                  " Set the Minidump driver capture mask level.\n"
  89                  "\t\t  Default is 0 (firmware default capture mask)\n"
  90                  "\t\t  Can be set to 0x3, 0x7, 0xF, 0x1F, 0x3F, 0x7F, 0xFF");
  91
  92 int ql4xenablemd = 1;
  93 module_param(ql4xenablemd, int, S_IRUGO | S_IWUSR);
  94 MODULE_PARM_DESC(ql4xenablemd,
  95                  " Set to enable minidump.\n"
  96                  "\t\t  0 - disable minidump\n"
  97                  "\t\t  1 - enable minidump (Default)");
  98
  99 static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha);
 100 /*
 101  * SCSI host template entry points
 102  */
 103 static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha);
 104
 105 /*
 106  * iSCSI template entry points
 107  */
 108 static int qla4xxx_session_get_param(struct iscsi_cls_session *cls_sess,
 109                                      enum iscsi_param param, char *buf);
 110 static int qla4xxx_conn_get_param(struct iscsi_cls_conn *conn,
 111                                   enum iscsi_param param, char *buf);
 112 static int qla4xxx_host_get_param(struct Scsi_Host *shost,
 113                                   enum iscsi_host_param param, char *buf);
 114 static int qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data,
 115                                    uint32_t len);
 116 static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
 117                                    enum iscsi_param_type param_type,
 118                                    int param, char *buf);
 119 static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc);
 120 static struct iscsi_endpoint *qla4xxx_ep_connect(struct Scsi_Host *shost,
 121                                                  struct sockaddr *dst_addr,
 122                                                  int non_blocking);
 123 static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms);
 124 static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep);
 125 static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
 126                                 enum iscsi_param param, char *buf);
 127 static int qla4xxx_conn_start(struct iscsi_cls_conn *conn);
 128 static struct iscsi_cls_conn *
 129 qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx);
 130 static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
 131                              struct iscsi_cls_conn *cls_conn,
 132                              uint64_t transport_fd, int is_leading);
 133 static void qla4xxx_conn_destroy(struct iscsi_cls_conn *conn);
 134 static struct iscsi_cls_session *
 135 qla4xxx_session_create(struct iscsi_endpoint *ep, uint16_t cmds_max,
 136                         uint16_t qdepth, uint32_t initial_cmdsn);
 137 static void qla4xxx_session_destroy(struct iscsi_cls_session *sess);
 138 static void qla4xxx_task_work(struct work_struct *wdata);
 139 static int qla4xxx_alloc_pdu(struct iscsi_task *, uint8_t);
 140 static int qla4xxx_task_xmit(struct iscsi_task *);
 141 static void qla4xxx_task_cleanup(struct iscsi_task *);
 142 static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session);
 143 static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
 144                                    struct iscsi_stats *stats);
 145 static int qla4xxx_send_ping(struct Scsi_Host *shost, uint32_t iface_num,
 146                              uint32_t iface_type, uint32_t payload_size,
 147                              uint32_t pid, struct sockaddr *dst_addr);
 148 static int qla4xxx_get_chap_list(struct Scsi_Host *shost, uint16_t chap_tbl_idx,
 149                                  uint32_t *num_entries, char *buf);
 150 static int qla4xxx_delete_chap(struct Scsi_Host *shost, uint16_t chap_tbl_idx);
 151 static int qla4xxx_set_chap_entry(struct Scsi_Host *shost, void  *data,
 152                                   int len);
 153 static int qla4xxx_get_host_stats(struct Scsi_Host *shost, char *buf, int len);
 154
 155 /*
 156  * SCSI host template entry points
 157  */
 158 static int qla4xxx_queuecommand(struct Scsi_Host *h, struct scsi_cmnd *cmd);
 159 static int qla4xxx_eh_abort(struct scsi_cmnd *cmd);
 160 static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd);
 161 static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd);
 162 static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd);
 163 static int qla4xxx_slave_alloc(struct scsi_device *device);
 164 static umode_t qla4_attr_is_visible(int param_type, int param);
 165 static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type);
 166
 167 /*
 168  * iSCSI Flash DDB sysfs entry points
 169  */
 170 static int
 171 qla4xxx_sysfs_ddb_set_param(struct iscsi_bus_flash_session *fnode_sess,
 172                             struct iscsi_bus_flash_conn *fnode_conn,
 173                             void *data, int len);
 174 static int
 175 qla4xxx_sysfs_ddb_get_param(struct iscsi_bus_flash_session *fnode_sess,
 176                             int param, char *buf);
 177 static int qla4xxx_sysfs_ddb_add(struct Scsi_Host *shost, const char *buf,
 178                                  int len);
 179 static int
 180 qla4xxx_sysfs_ddb_delete(struct iscsi_bus_flash_session *fnode_sess);
 181 static int qla4xxx_sysfs_ddb_login(struct iscsi_bus_flash_session *fnode_sess,
 182                                    struct iscsi_bus_flash_conn *fnode_conn);
 183 static int qla4xxx_sysfs_ddb_logout(struct iscsi_bus_flash_session *fnode_sess,
 184                                     struct iscsi_bus_flash_conn *fnode_conn);
 185 static int qla4xxx_sysfs_ddb_logout_sid(struct iscsi_cls_session *cls_sess);
 186
 187 static struct qla4_8xxx_legacy_intr_set legacy_intr[] =
 188     QLA82XX_LEGACY_INTR_CONFIG;
 189
 190 static const uint32_t qla4_82xx_reg_tbl[] = {
 191         QLA82XX_PEG_HALT_STATUS1,
 192         QLA82XX_PEG_HALT_STATUS2,
 193         QLA82XX_PEG_ALIVE_COUNTER,
 194         QLA82XX_CRB_DRV_ACTIVE,
 195         QLA82XX_CRB_DEV_STATE,
 196         QLA82XX_CRB_DRV_STATE,
 197         QLA82XX_CRB_DRV_SCRATCH,
 198         QLA82XX_CRB_DEV_PART_INFO,
 199         QLA82XX_CRB_DRV_IDC_VERSION,
 200         QLA82XX_FW_VERSION_MAJOR,
 201         QLA82XX_FW_VERSION_MINOR,
 202         QLA82XX_FW_VERSION_SUB,
 203         CRB_CMDPEG_STATE,
 204         CRB_TEMP_STATE,
 205 };
 206
 207 static const uint32_t qla4_83xx_reg_tbl[] = {
 208         QLA83XX_PEG_HALT_STATUS1,
 209         QLA83XX_PEG_HALT_STATUS2,
 210         QLA83XX_PEG_ALIVE_COUNTER,
 211         QLA83XX_CRB_DRV_ACTIVE,
 212         QLA83XX_CRB_DEV_STATE,
 213         QLA83XX_CRB_DRV_STATE,
 214         QLA83XX_CRB_DRV_SCRATCH,
 215         QLA83XX_CRB_DEV_PART_INFO1,
 216         QLA83XX_CRB_IDC_VER_MAJOR,
 217         QLA83XX_FW_VER_MAJOR,
 218         QLA83XX_FW_VER_MINOR,
 219         QLA83XX_FW_VER_SUB,
 220         QLA83XX_CMDPEG_STATE,
 221         QLA83XX_ASIC_TEMP,
 222 };
 223
 224 static struct scsi_host_template qla4xxx_driver_template = {
 225         .module                 = THIS_MODULE,
 226         .name                   = DRIVER_NAME,
 227         .proc_name              = DRIVER_NAME,
 228         .queuecommand           = qla4xxx_queuecommand,
 229
 230         .eh_abort_handler       = qla4xxx_eh_abort,
 231         .eh_device_reset_handler = qla4xxx_eh_device_reset,
 232         .eh_target_reset_handler = qla4xxx_eh_target_reset,
 233         .eh_host_reset_handler  = qla4xxx_eh_host_reset,
 234         .eh_timed_out           = qla4xxx_eh_cmd_timed_out,
 235
 236         .slave_alloc            = qla4xxx_slave_alloc,
 237         .change_queue_depth     = scsi_change_queue_depth,
 238
 239         .this_id                = -1,
 240         .cmd_per_lun            = 3,
 241         .sg_tablesize           = SG_ALL,
 242
 243         .max_sectors            = 0xFFFF,
 244         .shost_attrs            = qla4xxx_host_attrs,
 245         .host_reset             = qla4xxx_host_reset,
 246         .vendor_id              = SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_QLOGIC,
 247 };
 248
 249 static struct iscsi_transport qla4xxx_iscsi_transport = {
 250         .owner                  = THIS_MODULE,
 251         .name                   = DRIVER_NAME,
 252         .caps                   = CAP_TEXT_NEGO |
 253                                   CAP_DATA_PATH_OFFLOAD | CAP_HDRDGST |
 254                                   CAP_DATADGST | CAP_LOGIN_OFFLOAD |
 255                                   CAP_MULTI_R2T,
 256         .attr_is_visible        = qla4_attr_is_visible,
 257         .create_session         = qla4xxx_session_create,
 258         .destroy_session        = qla4xxx_session_destroy,
 259         .start_conn             = qla4xxx_conn_start,
 260         .create_conn            = qla4xxx_conn_create,
 261         .bind_conn              = qla4xxx_conn_bind,
 262         .unbind_conn            = iscsi_conn_unbind,
 263         .stop_conn              = iscsi_conn_stop,
 264         .destroy_conn           = qla4xxx_conn_destroy,
 265         .set_param              = iscsi_set_param,
 266         .get_conn_param         = qla4xxx_conn_get_param,
 267         .get_session_param      = qla4xxx_session_get_param,
 268         .get_ep_param           = qla4xxx_get_ep_param,
 269         .ep_connect             = qla4xxx_ep_connect,
 270         .ep_poll                = qla4xxx_ep_poll,
 271         .ep_disconnect          = qla4xxx_ep_disconnect,
 272         .get_stats              = qla4xxx_conn_get_stats,
 273         .send_pdu               = iscsi_conn_send_pdu,
 274         .xmit_task              = qla4xxx_task_xmit,
 275         .cleanup_task           = qla4xxx_task_cleanup,
 276         .alloc_pdu              = qla4xxx_alloc_pdu,
 277
 278         .get_host_param         = qla4xxx_host_get_param,
 279         .set_iface_param        = qla4xxx_iface_set_param,
 280         .get_iface_param        = qla4xxx_get_iface_param,
 281         .bsg_request            = qla4xxx_bsg_request,
 282         .send_ping              = qla4xxx_send_ping,
 283         .get_chap               = qla4xxx_get_chap_list,
 284         .delete_chap            = qla4xxx_delete_chap,
 285         .set_chap               = qla4xxx_set_chap_entry,
 286         .get_flashnode_param    = qla4xxx_sysfs_ddb_get_param,
 287         .set_flashnode_param    = qla4xxx_sysfs_ddb_set_param,
 288         .new_flashnode          = qla4xxx_sysfs_ddb_add,
 289         .del_flashnode          = qla4xxx_sysfs_ddb_delete,
 290         .login_flashnode        = qla4xxx_sysfs_ddb_login,
 291         .logout_flashnode       = qla4xxx_sysfs_ddb_logout,
 292         .logout_flashnode_sid   = qla4xxx_sysfs_ddb_logout_sid,
 293         .get_host_stats         = qla4xxx_get_host_stats,
 294 };
 295
 296 static struct scsi_transport_template *qla4xxx_scsi_transport;
 297
 298 static int qla4xxx_isp_check_reg(struct scsi_qla_host *ha)
 299 {
 300         u32 reg_val = 0;
 301         int rval = QLA_SUCCESS;
 302
 303         if (is_qla8022(ha))
 304                 reg_val = readl(&ha->qla4_82xx_reg->host_status);
 305         else if (is_qla8032(ha) || is_qla8042(ha))
 306                 reg_val = qla4_8xxx_rd_direct(ha, QLA8XXX_PEG_ALIVE_COUNTER);
 307         else
 308                 reg_val = readw(&ha->reg->ctrl_status);
 309
 310         if (reg_val == QL4_ISP_REG_DISCONNECT)
 311                 rval = QLA_ERROR;
 312
 313         return rval;
 314 }
 315
 316 static int qla4xxx_send_ping(struct Scsi_Host *shost, uint32_t iface_num,
 317                              uint32_t iface_type, uint32_t payload_size,
 318                              uint32_t pid, struct sockaddr *dst_addr)
 319 {
 320         struct scsi_qla_host *ha = to_qla_host(shost);
 321         struct sockaddr_in *addr;
 322         struct sockaddr_in6 *addr6;
 323         uint32_t options = 0;
 324         uint8_t ipaddr[IPv6_ADDR_LEN];
 325         int rval;
 326
 327         memset(ipaddr, 0, IPv6_ADDR_LEN);
 328         /* IPv4 to IPv4 */
 329         if ((iface_type == ISCSI_IFACE_TYPE_IPV4) &&
 330             (dst_addr->sa_family == AF_INET)) {
 331                 addr = (struct sockaddr_in *)dst_addr;
 332                 memcpy(ipaddr, &addr->sin_addr.s_addr, IP_ADDR_LEN);
 333                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv4 Ping src: %pI4 "
 334                                   "dest: %pI4\n", __func__,
 335                                   &ha->ip_config.ip_address, ipaddr));
 336                 rval = qla4xxx_ping_iocb(ha, options, payload_size, pid,
 337                                          ipaddr);
 338                 if (rval)
 339                         rval = -EINVAL;
 340         } else if ((iface_type == ISCSI_IFACE_TYPE_IPV6) &&
 341                    (dst_addr->sa_family == AF_INET6)) {
 342                 /* IPv6 to IPv6 */
 343                 addr6 = (struct sockaddr_in6 *)dst_addr;
 344                 memcpy(ipaddr, &addr6->sin6_addr.in6_u.u6_addr8, IPv6_ADDR_LEN);
 345
 346                 options |= PING_IPV6_PROTOCOL_ENABLE;
 347
 348                 /* Ping using LinkLocal address */
 349                 if ((iface_num == 0) || (iface_num == 1)) {
 350                         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: LinkLocal Ping "
 351                                           "src: %pI6 dest: %pI6\n", __func__,
 352                                           &ha->ip_config.ipv6_link_local_addr,
 353                                           ipaddr));
 354                         options |= PING_IPV6_LINKLOCAL_ADDR;
 355                         rval = qla4xxx_ping_iocb(ha, options, payload_size,
 356                                                  pid, ipaddr);
 357                 } else {
 358                         ql4_printk(KERN_WARNING, ha, "%s: iface num = %d "
 359                                    "not supported\n", __func__, iface_num);
 360                         rval = -ENOSYS;
 361                         goto exit_send_ping;
 362                 }
 363
 364                 /*
 365                  * If ping using LinkLocal address fails, try ping using
 366                  * IPv6 address
 367                  */
 368                 if (rval != QLA_SUCCESS) {
 369                         options &= ~PING_IPV6_LINKLOCAL_ADDR;
 370                         if (iface_num == 0) {
 371                                 options |= PING_IPV6_ADDR0;
 372                                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv6 "
 373                                                   "Ping src: %pI6 "
 374                                                   "dest: %pI6\n", __func__,
 375                                                   &ha->ip_config.ipv6_addr0,
 376                                                   ipaddr));
 377                         } else if (iface_num == 1) {
 378                                 options |= PING_IPV6_ADDR1;
 379                                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: IPv6 "
 380                                                   "Ping src: %pI6 "
 381                                                   "dest: %pI6\n", __func__,
 382                                                   &ha->ip_config.ipv6_addr1,
 383                                                   ipaddr));
 384                         }
 385                         rval = qla4xxx_ping_iocb(ha, options, payload_size,
 386                                                  pid, ipaddr);
 387                         if (rval)
 388                                 rval = -EINVAL;
 389                 }
 390         } else
 391                 rval = -ENOSYS;
 392 exit_send_ping:
 393         return rval;
 394 }
 395
 396 static umode_t qla4_attr_is_visible(int param_type, int param)
 397 {
 398         switch (param_type) {
 399         case ISCSI_HOST_PARAM:
 400                 switch (param) {
 401                 case ISCSI_HOST_PARAM_HWADDRESS:
 402                 case ISCSI_HOST_PARAM_IPADDRESS:
 403                 case ISCSI_HOST_PARAM_INITIATOR_NAME:
 404                 case ISCSI_HOST_PARAM_PORT_STATE:
 405                 case ISCSI_HOST_PARAM_PORT_SPEED:
 406                         return S_IRUGO;
 407                 default:
 408                         return 0;
 409                 }
 410         case ISCSI_PARAM:
 411                 switch (param) {
 412                 case ISCSI_PARAM_PERSISTENT_ADDRESS:
 413                 case ISCSI_PARAM_PERSISTENT_PORT:
 414                 case ISCSI_PARAM_CONN_ADDRESS:
 415                 case ISCSI_PARAM_CONN_PORT:
 416                 case ISCSI_PARAM_TARGET_NAME:
 417                 case ISCSI_PARAM_TPGT:
 418                 case ISCSI_PARAM_TARGET_ALIAS:
 419                 case ISCSI_PARAM_MAX_BURST:
 420                 case ISCSI_PARAM_MAX_R2T:
 421                 case ISCSI_PARAM_FIRST_BURST:
 422                 case ISCSI_PARAM_MAX_RECV_DLENGTH:
 423                 case ISCSI_PARAM_MAX_XMIT_DLENGTH:
 424                 case ISCSI_PARAM_IFACE_NAME:
 425                 case ISCSI_PARAM_CHAP_OUT_IDX:
 426                 case ISCSI_PARAM_CHAP_IN_IDX:
 427                 case ISCSI_PARAM_USERNAME:
 428                 case ISCSI_PARAM_PASSWORD:
 429                 case ISCSI_PARAM_USERNAME_IN:
 430                 case ISCSI_PARAM_PASSWORD_IN:
 431                 case ISCSI_PARAM_AUTO_SND_TGT_DISABLE:
 432                 case ISCSI_PARAM_DISCOVERY_SESS:
 433                 case ISCSI_PARAM_PORTAL_TYPE:
 434                 case ISCSI_PARAM_CHAP_AUTH_EN:
 435                 case ISCSI_PARAM_DISCOVERY_LOGOUT_EN:
 436                 case ISCSI_PARAM_BIDI_CHAP_EN:
 437                 case ISCSI_PARAM_DISCOVERY_AUTH_OPTIONAL:
 438                 case ISCSI_PARAM_DEF_TIME2WAIT:
 439                 case ISCSI_PARAM_DEF_TIME2RETAIN:
 440                 case ISCSI_PARAM_HDRDGST_EN:
 441                 case ISCSI_PARAM_DATADGST_EN:
 442                 case ISCSI_PARAM_INITIAL_R2T_EN:
 443                 case ISCSI_PARAM_IMM_DATA_EN:
 444                 case ISCSI_PARAM_PDU_INORDER_EN:
 445                 case ISCSI_PARAM_DATASEQ_INORDER_EN:
 446                 case ISCSI_PARAM_MAX_SEGMENT_SIZE:
 447                 case ISCSI_PARAM_TCP_TIMESTAMP_STAT:
 448                 case ISCSI_PARAM_TCP_WSF_DISABLE:
 449                 case ISCSI_PARAM_TCP_NAGLE_DISABLE:
 450                 case ISCSI_PARAM_TCP_TIMER_SCALE:
 451                 case ISCSI_PARAM_TCP_TIMESTAMP_EN:
 452                 case ISCSI_PARAM_TCP_XMIT_WSF:
 453                 case ISCSI_PARAM_TCP_RECV_WSF:
 454                 case ISCSI_PARAM_IP_FRAGMENT_DISABLE:
 455                 case ISCSI_PARAM_IPV4_TOS:
 456                 case ISCSI_PARAM_IPV6_TC:
 457                 case ISCSI_PARAM_IPV6_FLOW_LABEL:
 458                 case ISCSI_PARAM_IS_FW_ASSIGNED_IPV6:
 459                 case ISCSI_PARAM_KEEPALIVE_TMO:
 460                 case ISCSI_PARAM_LOCAL_PORT:
 461                 case ISCSI_PARAM_ISID:
 462                 case ISCSI_PARAM_TSID:
 463                 case ISCSI_PARAM_DEF_TASKMGMT_TMO:
 464                 case ISCSI_PARAM_ERL:
 465                 case ISCSI_PARAM_STATSN:
 466                 case ISCSI_PARAM_EXP_STATSN:
 467                 case ISCSI_PARAM_DISCOVERY_PARENT_IDX:
 468                 case ISCSI_PARAM_DISCOVERY_PARENT_TYPE:
 469                 case ISCSI_PARAM_LOCAL_IPADDR:
 470                         return S_IRUGO;
 471                 default:
 472                         return 0;
 473                 }
 474         case ISCSI_NET_PARAM:
 475                 switch (param) {
 476                 case ISCSI_NET_PARAM_IPV4_ADDR:
 477                 case ISCSI_NET_PARAM_IPV4_SUBNET:
 478                 case ISCSI_NET_PARAM_IPV4_GW:
 479                 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
 480                 case ISCSI_NET_PARAM_IFACE_ENABLE:
 481                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
 482                 case ISCSI_NET_PARAM_IPV6_ADDR:
 483                 case ISCSI_NET_PARAM_IPV6_ROUTER:
 484                 case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
 485                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
 486                 case ISCSI_NET_PARAM_VLAN_ID:
 487                 case ISCSI_NET_PARAM_VLAN_PRIORITY:
 488                 case ISCSI_NET_PARAM_VLAN_ENABLED:
 489                 case ISCSI_NET_PARAM_MTU:
 490                 case ISCSI_NET_PARAM_PORT:
 491                 case ISCSI_NET_PARAM_IPADDR_STATE:
 492                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_STATE:
 493                 case ISCSI_NET_PARAM_IPV6_ROUTER_STATE:
 494                 case ISCSI_NET_PARAM_DELAYED_ACK_EN:
 495                 case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
 496                 case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
 497                 case ISCSI_NET_PARAM_TCP_WSF:
 498                 case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
 499                 case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
 500                 case ISCSI_NET_PARAM_CACHE_ID:
 501                 case ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN:
 502                 case ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN:
 503                 case ISCSI_NET_PARAM_IPV4_TOS_EN:
 504                 case ISCSI_NET_PARAM_IPV4_TOS:
 505                 case ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN:
 506                 case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN:
 507                 case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID:
 508                 case ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN:
 509                 case ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN:
 510                 case ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID:
 511                 case ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN:
 512                 case ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE:
 513                 case ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN:
 514                 case ISCSI_NET_PARAM_REDIRECT_EN:
 515                 case ISCSI_NET_PARAM_IPV4_TTL:
 516                 case ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN:
 517                 case ISCSI_NET_PARAM_IPV6_MLD_EN:
 518                 case ISCSI_NET_PARAM_IPV6_FLOW_LABEL:
 519                 case ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS:
 520                 case ISCSI_NET_PARAM_IPV6_HOP_LIMIT:
 521                 case ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO:
 522                 case ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME:
 523                 case ISCSI_NET_PARAM_IPV6_ND_STALE_TMO:
 524                 case ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT:
 525                 case ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU:
 526                         return S_IRUGO;
 527                 default:
 528                         return 0;
 529                 }
 530         case ISCSI_IFACE_PARAM:
 531                 switch (param) {
 532                 case ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO:
 533                 case ISCSI_IFACE_PARAM_HDRDGST_EN:
 534                 case ISCSI_IFACE_PARAM_DATADGST_EN:
 535                 case ISCSI_IFACE_PARAM_IMM_DATA_EN:
 536                 case ISCSI_IFACE_PARAM_INITIAL_R2T_EN:
 537                 case ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN:
 538                 case ISCSI_IFACE_PARAM_PDU_INORDER_EN:
 539                 case ISCSI_IFACE_PARAM_ERL:
 540                 case ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH:
 541                 case ISCSI_IFACE_PARAM_FIRST_BURST:
 542                 case ISCSI_IFACE_PARAM_MAX_R2T:
 543                 case ISCSI_IFACE_PARAM_MAX_BURST:
 544                 case ISCSI_IFACE_PARAM_CHAP_AUTH_EN:
 545                 case ISCSI_IFACE_PARAM_BIDI_CHAP_EN:
 546                 case ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL:
 547                 case ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN:
 548                 case ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN:
 549                 case ISCSI_IFACE_PARAM_INITIATOR_NAME:
 550                         return S_IRUGO;
 551                 default:
 552                         return 0;
 553                 }
 554         case ISCSI_FLASHNODE_PARAM:
 555                 switch (param) {
 556                 case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
 557                 case ISCSI_FLASHNODE_PORTAL_TYPE:
 558                 case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
 559                 case ISCSI_FLASHNODE_DISCOVERY_SESS:
 560                 case ISCSI_FLASHNODE_ENTRY_EN:
 561                 case ISCSI_FLASHNODE_HDR_DGST_EN:
 562                 case ISCSI_FLASHNODE_DATA_DGST_EN:
 563                 case ISCSI_FLASHNODE_IMM_DATA_EN:
 564                 case ISCSI_FLASHNODE_INITIAL_R2T_EN:
 565                 case ISCSI_FLASHNODE_DATASEQ_INORDER:
 566                 case ISCSI_FLASHNODE_PDU_INORDER:
 567                 case ISCSI_FLASHNODE_CHAP_AUTH_EN:
 568                 case ISCSI_FLASHNODE_SNACK_REQ_EN:
 569                 case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
 570                 case ISCSI_FLASHNODE_BIDI_CHAP_EN:
 571                 case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
 572                 case ISCSI_FLASHNODE_ERL:
 573                 case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
 574                 case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
 575                 case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
 576                 case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
 577                 case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
 578                 case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
 579                 case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
 580                 case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
 581                 case ISCSI_FLASHNODE_FIRST_BURST:
 582                 case ISCSI_FLASHNODE_DEF_TIME2WAIT:
 583                 case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
 584                 case ISCSI_FLASHNODE_MAX_R2T:
 585                 case ISCSI_FLASHNODE_KEEPALIVE_TMO:
 586                 case ISCSI_FLASHNODE_ISID:
 587                 case ISCSI_FLASHNODE_TSID:
 588                 case ISCSI_FLASHNODE_PORT:
 589                 case ISCSI_FLASHNODE_MAX_BURST:
 590                 case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
 591                 case ISCSI_FLASHNODE_IPADDR:
 592                 case ISCSI_FLASHNODE_ALIAS:
 593                 case ISCSI_FLASHNODE_REDIRECT_IPADDR:
 594                 case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
 595                 case ISCSI_FLASHNODE_LOCAL_PORT:
 596                 case ISCSI_FLASHNODE_IPV4_TOS:
 597                 case ISCSI_FLASHNODE_IPV6_TC:
 598                 case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
 599                 case ISCSI_FLASHNODE_NAME:
 600                 case ISCSI_FLASHNODE_TPGT:
 601                 case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
 602                 case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
 603                 case ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE:
 604                 case ISCSI_FLASHNODE_TCP_XMIT_WSF:
 605                 case ISCSI_FLASHNODE_TCP_RECV_WSF:
 606                 case ISCSI_FLASHNODE_CHAP_OUT_IDX:
 607                 case ISCSI_FLASHNODE_USERNAME:
 608                 case ISCSI_FLASHNODE_PASSWORD:
 609                 case ISCSI_FLASHNODE_STATSN:
 610                 case ISCSI_FLASHNODE_EXP_STATSN:
 611                 case ISCSI_FLASHNODE_IS_BOOT_TGT:
 612                         return S_IRUGO;
 613                 default:
 614                         return 0;
 615                 }
 616         }
 617
 618         return 0;
 619 }
 620
 621 /**
 622  * qla4xxx_create chap_list - Create CHAP list from FLASH
 623  * @ha: pointer to adapter structure
 624  *
 625  * Read flash and make a list of CHAP entries, during login when a CHAP entry
 626  * is received, it will be checked in this list. If entry exist then the CHAP
 627  * entry index is set in the DDB. If CHAP entry does not exist in this list
 628  * then a new entry is added in FLASH in CHAP table and the index obtained is
 629  * used in the DDB.
 630  **/
 631 static void qla4xxx_create_chap_list(struct scsi_qla_host *ha)
 632 {
 633         int rval = 0;
 634         uint8_t *chap_flash_data = NULL;
 635         uint32_t offset;
 636         dma_addr_t chap_dma;
 637         uint32_t chap_size = 0;
 638
 639         if (is_qla40XX(ha))
 640                 chap_size = MAX_CHAP_ENTRIES_40XX *
 641                             sizeof(struct ql4_chap_table);
 642         else    /* Single region contains CHAP info for both
 643                  * ports which is divided into half for each port.
 644                  */
 645                 chap_size = ha->hw.flt_chap_size / 2;
 646
 647         chap_flash_data = dma_alloc_coherent(&ha->pdev->dev, chap_size,
 648                                              &chap_dma, GFP_KERNEL);
 649         if (!chap_flash_data) {
 650                 ql4_printk(KERN_ERR, ha, "No memory for chap_flash_data\n");
 651                 return;
 652         }
 653
 654         if (is_qla40XX(ha)) {
 655                 offset = FLASH_CHAP_OFFSET;
 656         } else {
 657                 offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
 658                 if (ha->port_num == 1)
 659                         offset += chap_size;
 660         }
 661
 662         rval = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
 663         if (rval != QLA_SUCCESS)
 664                 goto exit_chap_list;
 665
 666         if (ha->chap_list == NULL)
 667                 ha->chap_list = vmalloc(chap_size);
 668         if (ha->chap_list == NULL) {
 669                 ql4_printk(KERN_ERR, ha, "No memory for ha->chap_list\n");
 670                 goto exit_chap_list;
 671         }
 672
 673         memset(ha->chap_list, 0, chap_size);
 674         memcpy(ha->chap_list, chap_flash_data, chap_size);
 675
 676 exit_chap_list:
 677         dma_free_coherent(&ha->pdev->dev, chap_size, chap_flash_data, chap_dma);
 678 }
 679
 680 static int qla4xxx_get_chap_by_index(struct scsi_qla_host *ha,
 681                                      int16_t chap_index,
 682                                      struct ql4_chap_table **chap_entry)
 683 {
 684         int rval = QLA_ERROR;
 685         int max_chap_entries;
 686
 687         if (!ha->chap_list) {
 688                 ql4_printk(KERN_ERR, ha, "CHAP table cache is empty!\n");
 689                 rval = QLA_ERROR;
 690                 goto exit_get_chap;
 691         }
 692
 693         if (is_qla80XX(ha))
 694                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 695                                    sizeof(struct ql4_chap_table);
 696         else
 697                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 698
 699         if (chap_index > max_chap_entries) {
 700                 ql4_printk(KERN_ERR, ha, "Invalid Chap index\n");
 701                 rval = QLA_ERROR;
 702                 goto exit_get_chap;
 703         }
 704
 705         *chap_entry = (struct ql4_chap_table *)ha->chap_list + chap_index;
 706         if ((*chap_entry)->cookie !=
 707              __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
 708                 rval = QLA_ERROR;
 709                 *chap_entry = NULL;
 710         } else {
 711                 rval = QLA_SUCCESS;
 712         }
 713
 714 exit_get_chap:
 715         return rval;
 716 }
 717
 718 /**
 719  * qla4xxx_find_free_chap_index - Find the first free chap index
 720  * @ha: pointer to adapter structure
 721  * @chap_index: CHAP index to be returned
 722  *
 723  * Find the first free chap index available in the chap table
 724  *
 725  * Note: Caller should acquire the chap lock before getting here.
 726  **/
 727 static int qla4xxx_find_free_chap_index(struct scsi_qla_host *ha,
 728                                         uint16_t *chap_index)
 729 {
 730         int i, rval;
 731         int free_index = -1;
 732         int max_chap_entries = 0;
 733         struct ql4_chap_table *chap_table;
 734
 735         if (is_qla80XX(ha))
 736                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 737                                                 sizeof(struct ql4_chap_table);
 738         else
 739                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 740
 741         if (!ha->chap_list) {
 742                 ql4_printk(KERN_ERR, ha, "CHAP table cache is empty!\n");
 743                 rval = QLA_ERROR;
 744                 goto exit_find_chap;
 745         }
 746
 747         for (i = 0; i < max_chap_entries; i++) {
 748                 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
 749
 750                 if ((chap_table->cookie !=
 751                     __constant_cpu_to_le16(CHAP_VALID_COOKIE)) &&
 752                    (i > MAX_RESRV_CHAP_IDX)) {
 753                                 free_index = i;
 754                                 break;
 755                 }
 756         }
 757
 758         if (free_index != -1) {
 759                 *chap_index = free_index;
 760                 rval = QLA_SUCCESS;
 761         } else {
 762                 rval = QLA_ERROR;
 763         }
 764
 765 exit_find_chap:
 766         return rval;
 767 }
 768
 769 static int qla4xxx_get_chap_list(struct Scsi_Host *shost, uint16_t chap_tbl_idx,
 770                                   uint32_t *num_entries, char *buf)
 771 {
 772         struct scsi_qla_host *ha = to_qla_host(shost);
 773         struct ql4_chap_table *chap_table;
 774         struct iscsi_chap_rec *chap_rec;
 775         int max_chap_entries = 0;
 776         int valid_chap_entries = 0;
 777         int ret = 0, i;
 778
 779         if (is_qla80XX(ha))
 780                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 781                                         sizeof(struct ql4_chap_table);
 782         else
 783                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 784
 785         ql4_printk(KERN_INFO, ha, "%s: num_entries = %d, CHAP idx = %d\n",
 786                         __func__, *num_entries, chap_tbl_idx);
 787
 788         if (!buf) {
 789                 ret = -ENOMEM;
 790                 goto exit_get_chap_list;
 791         }
 792
 793         qla4xxx_create_chap_list(ha);
 794
 795         chap_rec = (struct iscsi_chap_rec *) buf;
 796         mutex_lock(&ha->chap_sem);
 797         for (i = chap_tbl_idx; i < max_chap_entries; i++) {
 798                 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
 799                 if (chap_table->cookie !=
 800                     __constant_cpu_to_le16(CHAP_VALID_COOKIE))
 801                         continue;
 802
 803                 chap_rec->chap_tbl_idx = i;
 804                 strlcpy(chap_rec->username, chap_table->name,
 805                         ISCSI_CHAP_AUTH_NAME_MAX_LEN);
 806                 strlcpy(chap_rec->password, chap_table->secret,
 807                         QL4_CHAP_MAX_SECRET_LEN);
 808                 chap_rec->password_length = chap_table->secret_len;
 809
 810                 if (chap_table->flags & BIT_7) /* local */
 811                         chap_rec->chap_type = CHAP_TYPE_OUT;
 812
 813                 if (chap_table->flags & BIT_6) /* peer */
 814                         chap_rec->chap_type = CHAP_TYPE_IN;
 815
 816                 chap_rec++;
 817
 818                 valid_chap_entries++;
 819                 if (valid_chap_entries == *num_entries)
 820                         break;
 821                 else
 822                         continue;
 823         }
 824         mutex_unlock(&ha->chap_sem);
 825
 826 exit_get_chap_list:
 827         ql4_printk(KERN_INFO, ha, "%s: Valid CHAP Entries = %d\n",
 828                         __func__,  valid_chap_entries);
 829         *num_entries = valid_chap_entries;
 830         return ret;
 831 }
 832
 833 static int __qla4xxx_is_chap_active(struct device *dev, void *data)
 834 {
 835         int ret = 0;
 836         uint16_t *chap_tbl_idx = (uint16_t *) data;
 837         struct iscsi_cls_session *cls_session;
 838         struct iscsi_session *sess;
 839         struct ddb_entry *ddb_entry;
 840
 841         if (!iscsi_is_session_dev(dev))
 842                 goto exit_is_chap_active;
 843
 844         cls_session = iscsi_dev_to_session(dev);
 845         sess = cls_session->dd_data;
 846         ddb_entry = sess->dd_data;
 847
 848         if (iscsi_session_chkready(cls_session))
 849                 goto exit_is_chap_active;
 850
 851         if (ddb_entry->chap_tbl_idx == *chap_tbl_idx)
 852                 ret = 1;
 853
 854 exit_is_chap_active:
 855         return ret;
 856 }
 857
 858 static int qla4xxx_is_chap_active(struct Scsi_Host *shost,
 859                                   uint16_t chap_tbl_idx)
 860 {
 861         int ret = 0;
 862
 863         ret = device_for_each_child(&shost->shost_gendev, &chap_tbl_idx,
 864                                     __qla4xxx_is_chap_active);
 865
 866         return ret;
 867 }
 868
 869 static int qla4xxx_delete_chap(struct Scsi_Host *shost, uint16_t chap_tbl_idx)
 870 {
 871         struct scsi_qla_host *ha = to_qla_host(shost);
 872         struct ql4_chap_table *chap_table;
 873         dma_addr_t chap_dma;
 874         int max_chap_entries = 0;
 875         uint32_t offset = 0;
 876         uint32_t chap_size;
 877         int ret = 0;
 878
 879         chap_table = dma_pool_zalloc(ha->chap_dma_pool, GFP_KERNEL, &chap_dma);
 880         if (chap_table == NULL)
 881                 return -ENOMEM;
 882
 883         if (is_qla80XX(ha))
 884                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
 885                                    sizeof(struct ql4_chap_table);
 886         else
 887                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
 888
 889         if (chap_tbl_idx > max_chap_entries) {
 890                 ret = -EINVAL;
 891                 goto exit_delete_chap;
 892         }
 893
 894         /* Check if chap index is in use.
 895          * If chap is in use don't delet chap entry */
 896         ret = qla4xxx_is_chap_active(shost, chap_tbl_idx);
 897         if (ret) {
 898                 ql4_printk(KERN_INFO, ha, "CHAP entry %d is in use, cannot "
 899                            "delete from flash\n", chap_tbl_idx);
 900                 ret = -EBUSY;
 901                 goto exit_delete_chap;
 902         }
 903
 904         chap_size = sizeof(struct ql4_chap_table);
 905         if (is_qla40XX(ha))
 906                 offset = FLASH_CHAP_OFFSET | (chap_tbl_idx * chap_size);
 907         else {
 908                 offset = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_region_chap << 2);
 909                 /* flt_chap_size is CHAP table size for both ports
 910                  * so divide it by 2 to calculate the offset for second port
 911                  */
 912                 if (ha->port_num == 1)
 913                         offset += (ha->hw.flt_chap_size / 2);
 914                 offset += (chap_tbl_idx * chap_size);
 915         }
 916
 917         ret = qla4xxx_get_flash(ha, chap_dma, offset, chap_size);
 918         if (ret != QLA_SUCCESS) {
 919                 ret = -EINVAL;
 920                 goto exit_delete_chap;
 921         }
 922
 923         DEBUG2(ql4_printk(KERN_INFO, ha, "Chap Cookie: x%x\n",
 924                           __le16_to_cpu(chap_table->cookie)));
 925
 926         if (__le16_to_cpu(chap_table->cookie) != CHAP_VALID_COOKIE) {
 927                 ql4_printk(KERN_ERR, ha, "No valid chap entry found\n");
 928                 goto exit_delete_chap;
 929         }
 930
 931         chap_table->cookie = __constant_cpu_to_le16(0xFFFF);
 932
 933         offset = FLASH_CHAP_OFFSET |
 934                         (chap_tbl_idx * sizeof(struct ql4_chap_table));
 935         ret = qla4xxx_set_flash(ha, chap_dma, offset, chap_size,
 936                                 FLASH_OPT_RMW_COMMIT);
 937         if (ret == QLA_SUCCESS && ha->chap_list) {
 938                 mutex_lock(&ha->chap_sem);
 939                 /* Update ha chap_list cache */
 940                 memcpy((struct ql4_chap_table *)ha->chap_list + chap_tbl_idx,
 941                         chap_table, sizeof(struct ql4_chap_table));
 942                 mutex_unlock(&ha->chap_sem);
 943         }
 944         if (ret != QLA_SUCCESS)
 945                 ret =  -EINVAL;
 946
 947 exit_delete_chap:
 948         dma_pool_free(ha->chap_dma_pool, chap_table, chap_dma);
 949         return ret;
 950 }
 951
 952 /**
 953  * qla4xxx_set_chap_entry - Make chap entry with given information
 954  * @shost: pointer to host
 955  * @data: chap info - credentials, index and type to make chap entry
 956  * @len: length of data
 957  *
 958  * Add or update chap entry with the given information
 959  **/
 960 static int qla4xxx_set_chap_entry(struct Scsi_Host *shost, void *data, int len)
 961 {
 962         struct scsi_qla_host *ha = to_qla_host(shost);
 963         struct iscsi_chap_rec chap_rec;
 964         struct ql4_chap_table *chap_entry = NULL;
 965         struct iscsi_param_info *param_info;
 966         struct nlattr *attr;
 967         int max_chap_entries = 0;
 968         int type;
 969         int rem = len;
 970         int rc = 0;
 971         int size;
 972
 973         memset(&chap_rec, 0, sizeof(chap_rec));
 974
 975         nla_for_each_attr(attr, data, len, rem) {
 976                 if (nla_len(attr) < sizeof(*param_info)) {
 977                         rc = -EINVAL;
 978                         goto exit_set_chap;
 979                 }
 980
 981                 param_info = nla_data(attr);
 982
 983                 switch (param_info->param) {
 984                 case ISCSI_CHAP_PARAM_INDEX:
 985                         chap_rec.chap_tbl_idx = *(uint16_t *)param_info->value;
 986                         break;
 987                 case ISCSI_CHAP_PARAM_CHAP_TYPE:
 988                         chap_rec.chap_type = param_info->value[0];
 989                         break;
 990                 case ISCSI_CHAP_PARAM_USERNAME:
 991                         size = min_t(size_t, sizeof(chap_rec.username),
 992                                      param_info->len);
 993                         memcpy(chap_rec.username, param_info->value, size);
 994                         break;
 995                 case ISCSI_CHAP_PARAM_PASSWORD:
 996                         size = min_t(size_t, sizeof(chap_rec.password),
 997                                      param_info->len);
 998                         memcpy(chap_rec.password, param_info->value, size);
 999                         break;
1000                 case ISCSI_CHAP_PARAM_PASSWORD_LEN:
1001                         chap_rec.password_length = param_info->value[0];
1002                         break;
1003                 default:
1004                         ql4_printk(KERN_ERR, ha,
1005                                    "%s: No such sysfs attribute\n", __func__);
1006                         rc = -ENOSYS;
1007                         goto exit_set_chap;
1008                 }
1009         }
1010
1011         if (chap_rec.chap_type == CHAP_TYPE_IN)
1012                 type = BIDI_CHAP;
1013         else
1014                 type = LOCAL_CHAP;
1015
1016         if (is_qla80XX(ha))
1017                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
1018                                    sizeof(struct ql4_chap_table);
1019         else
1020                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
1021
1022         mutex_lock(&ha->chap_sem);
1023         if (chap_rec.chap_tbl_idx < max_chap_entries) {
1024                 rc = qla4xxx_get_chap_by_index(ha, chap_rec.chap_tbl_idx,
1025                                                &chap_entry);
1026                 if (!rc) {
1027                         if (!(type == qla4xxx_get_chap_type(chap_entry))) {
1028                                 ql4_printk(KERN_INFO, ha,
1029                                            "Type mismatch for CHAP entry %d\n",
1030                                            chap_rec.chap_tbl_idx);
1031                                 rc = -EINVAL;
1032                                 goto exit_unlock_chap;
1033                         }
1034
1035                         /* If chap index is in use then don't modify it */
1036                         rc = qla4xxx_is_chap_active(shost,
1037                                                     chap_rec.chap_tbl_idx);
1038                         if (rc) {
1039                                 ql4_printk(KERN_INFO, ha,
1040                                            "CHAP entry %d is in use\n",
1041                                            chap_rec.chap_tbl_idx);
1042                                 rc = -EBUSY;
1043                                 goto exit_unlock_chap;
1044                         }
1045                 }
1046         } else {
1047                 rc = qla4xxx_find_free_chap_index(ha, &chap_rec.chap_tbl_idx);
1048                 if (rc) {
1049                         ql4_printk(KERN_INFO, ha, "CHAP entry not available\n");
1050                         rc = -EBUSY;
1051                         goto exit_unlock_chap;
1052                 }
1053         }
1054
1055         rc = qla4xxx_set_chap(ha, chap_rec.username, chap_rec.password,
1056                               chap_rec.chap_tbl_idx, type);
1057
1058 exit_unlock_chap:
1059         mutex_unlock(&ha->chap_sem);
1060
1061 exit_set_chap:
1062         return rc;
1063 }
1064
1065
1066 static int qla4xxx_get_host_stats(struct Scsi_Host *shost, char *buf, int len)
1067 {
1068         struct scsi_qla_host *ha = to_qla_host(shost);
1069         struct iscsi_offload_host_stats *host_stats = NULL;
1070         int host_stats_size;
1071         int ret = 0;
1072         int ddb_idx = 0;
1073         struct ql_iscsi_stats *ql_iscsi_stats = NULL;
1074         int stats_size;
1075         dma_addr_t iscsi_stats_dma;
1076
1077         DEBUG2(ql4_printk(KERN_INFO, ha, "Func: %s\n", __func__));
1078
1079         host_stats_size = sizeof(struct iscsi_offload_host_stats);
1080
1081         if (host_stats_size != len) {
1082                 ql4_printk(KERN_INFO, ha, "%s: host_stats size mismatch expected = %d, is = %d\n",
1083                            __func__, len, host_stats_size);
1084                 ret = -EINVAL;
1085                 goto exit_host_stats;
1086         }
1087         host_stats = (struct iscsi_offload_host_stats *)buf;
1088
1089         if (!buf) {
1090                 ret = -ENOMEM;
1091                 goto exit_host_stats;
1092         }
1093
1094         stats_size = PAGE_ALIGN(sizeof(struct ql_iscsi_stats));
1095
1096         ql_iscsi_stats = dma_alloc_coherent(&ha->pdev->dev, stats_size,
1097                                             &iscsi_stats_dma, GFP_KERNEL);
1098         if (!ql_iscsi_stats) {
1099                 ql4_printk(KERN_ERR, ha,
1100                            "Unable to allocate memory for iscsi stats\n");
1101                 ret = -ENOMEM;
1102                 goto exit_host_stats;
1103         }
1104
1105         ret =  qla4xxx_get_mgmt_data(ha, ddb_idx, stats_size,
1106                                      iscsi_stats_dma);
1107         if (ret != QLA_SUCCESS) {
1108                 ql4_printk(KERN_ERR, ha,
1109                            "Unable to retrieve iscsi stats\n");
1110                 ret = -EIO;
1111                 goto exit_host_stats;
1112         }
1113         host_stats->mactx_frames = le64_to_cpu(ql_iscsi_stats->mac_tx_frames);
1114         host_stats->mactx_bytes = le64_to_cpu(ql_iscsi_stats->mac_tx_bytes);
1115         host_stats->mactx_multicast_frames =
1116                         le64_to_cpu(ql_iscsi_stats->mac_tx_multicast_frames);
1117         host_stats->mactx_broadcast_frames =
1118                         le64_to_cpu(ql_iscsi_stats->mac_tx_broadcast_frames);
1119         host_stats->mactx_pause_frames =
1120                         le64_to_cpu(ql_iscsi_stats->mac_tx_pause_frames);
1121         host_stats->mactx_control_frames =
1122                         le64_to_cpu(ql_iscsi_stats->mac_tx_control_frames);
1123         host_stats->mactx_deferral =
1124                         le64_to_cpu(ql_iscsi_stats->mac_tx_deferral);
1125         host_stats->mactx_excess_deferral =
1126                         le64_to_cpu(ql_iscsi_stats->mac_tx_excess_deferral);
1127         host_stats->mactx_late_collision =
1128                         le64_to_cpu(ql_iscsi_stats->mac_tx_late_collision);
1129         host_stats->mactx_abort = le64_to_cpu(ql_iscsi_stats->mac_tx_abort);
1130         host_stats->mactx_single_collision =
1131                         le64_to_cpu(ql_iscsi_stats->mac_tx_single_collision);
1132         host_stats->mactx_multiple_collision =
1133                         le64_to_cpu(ql_iscsi_stats->mac_tx_multiple_collision);
1134         host_stats->mactx_collision =
1135                         le64_to_cpu(ql_iscsi_stats->mac_tx_collision);
1136         host_stats->mactx_frames_dropped =
1137                         le64_to_cpu(ql_iscsi_stats->mac_tx_frames_dropped);
1138         host_stats->mactx_jumbo_frames =
1139                         le64_to_cpu(ql_iscsi_stats->mac_tx_jumbo_frames);
1140         host_stats->macrx_frames = le64_to_cpu(ql_iscsi_stats->mac_rx_frames);
1141         host_stats->macrx_bytes = le64_to_cpu(ql_iscsi_stats->mac_rx_bytes);
1142         host_stats->macrx_unknown_control_frames =
1143                 le64_to_cpu(ql_iscsi_stats->mac_rx_unknown_control_frames);
1144         host_stats->macrx_pause_frames =
1145                         le64_to_cpu(ql_iscsi_stats->mac_rx_pause_frames);
1146         host_stats->macrx_control_frames =
1147                         le64_to_cpu(ql_iscsi_stats->mac_rx_control_frames);
1148         host_stats->macrx_dribble =
1149                         le64_to_cpu(ql_iscsi_stats->mac_rx_dribble);
1150         host_stats->macrx_frame_length_error =
1151                         le64_to_cpu(ql_iscsi_stats->mac_rx_frame_length_error);
1152         host_stats->macrx_jabber = le64_to_cpu(ql_iscsi_stats->mac_rx_jabber);
1153         host_stats->macrx_carrier_sense_error =
1154                 le64_to_cpu(ql_iscsi_stats->mac_rx_carrier_sense_error);
1155         host_stats->macrx_frame_discarded =
1156                         le64_to_cpu(ql_iscsi_stats->mac_rx_frame_discarded);
1157         host_stats->macrx_frames_dropped =
1158                         le64_to_cpu(ql_iscsi_stats->mac_rx_frames_dropped);
1159         host_stats->mac_crc_error = le64_to_cpu(ql_iscsi_stats->mac_crc_error);
1160         host_stats->mac_encoding_error =
1161                         le64_to_cpu(ql_iscsi_stats->mac_encoding_error);
1162         host_stats->macrx_length_error_large =
1163                         le64_to_cpu(ql_iscsi_stats->mac_rx_length_error_large);
1164         host_stats->macrx_length_error_small =
1165                         le64_to_cpu(ql_iscsi_stats->mac_rx_length_error_small);
1166         host_stats->macrx_multicast_frames =
1167                         le64_to_cpu(ql_iscsi_stats->mac_rx_multicast_frames);
1168         host_stats->macrx_broadcast_frames =
1169                         le64_to_cpu(ql_iscsi_stats->mac_rx_broadcast_frames);
1170         host_stats->iptx_packets = le64_to_cpu(ql_iscsi_stats->ip_tx_packets);
1171         host_stats->iptx_bytes = le64_to_cpu(ql_iscsi_stats->ip_tx_bytes);
1172         host_stats->iptx_fragments =
1173                         le64_to_cpu(ql_iscsi_stats->ip_tx_fragments);
1174         host_stats->iprx_packets = le64_to_cpu(ql_iscsi_stats->ip_rx_packets);
1175         host_stats->iprx_bytes = le64_to_cpu(ql_iscsi_stats->ip_rx_bytes);
1176         host_stats->iprx_fragments =
1177                         le64_to_cpu(ql_iscsi_stats->ip_rx_fragments);
1178         host_stats->ip_datagram_reassembly =
1179                         le64_to_cpu(ql_iscsi_stats->ip_datagram_reassembly);
1180         host_stats->ip_invalid_address_error =
1181                         le64_to_cpu(ql_iscsi_stats->ip_invalid_address_error);
1182         host_stats->ip_error_packets =
1183                         le64_to_cpu(ql_iscsi_stats->ip_error_packets);
1184         host_stats->ip_fragrx_overlap =
1185                         le64_to_cpu(ql_iscsi_stats->ip_fragrx_overlap);
1186         host_stats->ip_fragrx_outoforder =
1187                         le64_to_cpu(ql_iscsi_stats->ip_fragrx_outoforder);
1188         host_stats->ip_datagram_reassembly_timeout =
1189                 le64_to_cpu(ql_iscsi_stats->ip_datagram_reassembly_timeout);
1190         host_stats->ipv6tx_packets =
1191                         le64_to_cpu(ql_iscsi_stats->ipv6_tx_packets);
1192         host_stats->ipv6tx_bytes = le64_to_cpu(ql_iscsi_stats->ipv6_tx_bytes);
1193         host_stats->ipv6tx_fragments =
1194                         le64_to_cpu(ql_iscsi_stats->ipv6_tx_fragments);
1195         host_stats->ipv6rx_packets =
1196                         le64_to_cpu(ql_iscsi_stats->ipv6_rx_packets);
1197         host_stats->ipv6rx_bytes = le64_to_cpu(ql_iscsi_stats->ipv6_rx_bytes);
1198         host_stats->ipv6rx_fragments =
1199                         le64_to_cpu(ql_iscsi_stats->ipv6_rx_fragments);
1200         host_stats->ipv6_datagram_reassembly =
1201                         le64_to_cpu(ql_iscsi_stats->ipv6_datagram_reassembly);
1202         host_stats->ipv6_invalid_address_error =
1203                 le64_to_cpu(ql_iscsi_stats->ipv6_invalid_address_error);
1204         host_stats->ipv6_error_packets =
1205                         le64_to_cpu(ql_iscsi_stats->ipv6_error_packets);
1206         host_stats->ipv6_fragrx_overlap =
1207                         le64_to_cpu(ql_iscsi_stats->ipv6_fragrx_overlap);
1208         host_stats->ipv6_fragrx_outoforder =
1209                         le64_to_cpu(ql_iscsi_stats->ipv6_fragrx_outoforder);
1210         host_stats->ipv6_datagram_reassembly_timeout =
1211                 le64_to_cpu(ql_iscsi_stats->ipv6_datagram_reassembly_timeout);
1212         host_stats->tcptx_segments =
1213                         le64_to_cpu(ql_iscsi_stats->tcp_tx_segments);
1214         host_stats->tcptx_bytes = le64_to_cpu(ql_iscsi_stats->tcp_tx_bytes);
1215         host_stats->tcprx_segments =
1216                         le64_to_cpu(ql_iscsi_stats->tcp_rx_segments);
1217         host_stats->tcprx_byte = le64_to_cpu(ql_iscsi_stats->tcp_rx_byte);
1218         host_stats->tcp_duplicate_ack_retx =
1219                         le64_to_cpu(ql_iscsi_stats->tcp_duplicate_ack_retx);
1220         host_stats->tcp_retx_timer_expired =
1221                         le64_to_cpu(ql_iscsi_stats->tcp_retx_timer_expired);
1222         host_stats->tcprx_duplicate_ack =
1223                         le64_to_cpu(ql_iscsi_stats->tcp_rx_duplicate_ack);
1224         host_stats->tcprx_pure_ackr =
1225                         le64_to_cpu(ql_iscsi_stats->tcp_rx_pure_ackr);
1226         host_stats->tcptx_delayed_ack =
1227                         le64_to_cpu(ql_iscsi_stats->tcp_tx_delayed_ack);
1228         host_stats->tcptx_pure_ack =
1229                         le64_to_cpu(ql_iscsi_stats->tcp_tx_pure_ack);
1230         host_stats->tcprx_segment_error =
1231                         le64_to_cpu(ql_iscsi_stats->tcp_rx_segment_error);
1232         host_stats->tcprx_segment_outoforder =
1233                         le64_to_cpu(ql_iscsi_stats->tcp_rx_segment_outoforder);
1234         host_stats->tcprx_window_probe =
1235                         le64_to_cpu(ql_iscsi_stats->tcp_rx_window_probe);
1236         host_stats->tcprx_window_update =
1237                         le64_to_cpu(ql_iscsi_stats->tcp_rx_window_update);
1238         host_stats->tcptx_window_probe_persist =
1239                 le64_to_cpu(ql_iscsi_stats->tcp_tx_window_probe_persist);
1240         host_stats->ecc_error_correction =
1241                         le64_to_cpu(ql_iscsi_stats->ecc_error_correction);
1242         host_stats->iscsi_pdu_tx = le64_to_cpu(ql_iscsi_stats->iscsi_pdu_tx);
1243         host_stats->iscsi_data_bytes_tx =
1244                         le64_to_cpu(ql_iscsi_stats->iscsi_data_bytes_tx);
1245         host_stats->iscsi_pdu_rx = le64_to_cpu(ql_iscsi_stats->iscsi_pdu_rx);
1246         host_stats->iscsi_data_bytes_rx =
1247                         le64_to_cpu(ql_iscsi_stats->iscsi_data_bytes_rx);
1248         host_stats->iscsi_io_completed =
1249                         le64_to_cpu(ql_iscsi_stats->iscsi_io_completed);
1250         host_stats->iscsi_unexpected_io_rx =
1251                         le64_to_cpu(ql_iscsi_stats->iscsi_unexpected_io_rx);
1252         host_stats->iscsi_format_error =
1253                         le64_to_cpu(ql_iscsi_stats->iscsi_format_error);
1254         host_stats->iscsi_hdr_digest_error =
1255                         le64_to_cpu(ql_iscsi_stats->iscsi_hdr_digest_error);
1256         host_stats->iscsi_data_digest_error =
1257                         le64_to_cpu(ql_iscsi_stats->iscsi_data_digest_error);
1258         host_stats->iscsi_sequence_error =
1259                         le64_to_cpu(ql_iscsi_stats->iscsi_sequence_error);
1260 exit_host_stats:
1261         if (ql_iscsi_stats)
1262                 dma_free_coherent(&ha->pdev->dev, stats_size,
1263                                   ql_iscsi_stats, iscsi_stats_dma);
1264
1265         ql4_printk(KERN_INFO, ha, "%s: Get host stats done\n",
1266                    __func__);
1267         return ret;
1268 }
1269
1270 static int qla4xxx_get_iface_param(struct iscsi_iface *iface,
1271                                    enum iscsi_param_type param_type,
1272                                    int param, char *buf)
1273 {
1274         struct Scsi_Host *shost = iscsi_iface_to_shost(iface);
1275         struct scsi_qla_host *ha = to_qla_host(shost);
1276         int ival;
1277         char *pval = NULL;
1278         int len = -ENOSYS;
1279
1280         if (param_type == ISCSI_NET_PARAM) {
1281                 switch (param) {
1282                 case ISCSI_NET_PARAM_IPV4_ADDR:
1283                         len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
1284                         break;
1285                 case ISCSI_NET_PARAM_IPV4_SUBNET:
1286                         len = sprintf(buf, "%pI4\n",
1287                                       &ha->ip_config.subnet_mask);
1288                         break;
1289                 case ISCSI_NET_PARAM_IPV4_GW:
1290                         len = sprintf(buf, "%pI4\n", &ha->ip_config.gateway);
1291                         break;
1292                 case ISCSI_NET_PARAM_IFACE_ENABLE:
1293                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1294                                 OP_STATE(ha->ip_config.ipv4_options,
1295                                          IPOPT_IPV4_PROTOCOL_ENABLE, pval);
1296                         } else {
1297                                 OP_STATE(ha->ip_config.ipv6_options,
1298                                          IPV6_OPT_IPV6_PROTOCOL_ENABLE, pval);
1299                         }
1300
1301                         len = sprintf(buf, "%s\n", pval);
1302                         break;
1303                 case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
1304                         len = sprintf(buf, "%s\n",
1305                                       (ha->ip_config.tcp_options &
1306                                        TCPOPT_DHCP_ENABLE) ?
1307                                       "dhcp" : "static");
1308                         break;
1309                 case ISCSI_NET_PARAM_IPV6_ADDR:
1310                         if (iface->iface_num == 0)
1311                                 len = sprintf(buf, "%pI6\n",
1312                                               &ha->ip_config.ipv6_addr0);
1313                         if (iface->iface_num == 1)
1314                                 len = sprintf(buf, "%pI6\n",
1315                                               &ha->ip_config.ipv6_addr1);
1316                         break;
1317                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
1318                         len = sprintf(buf, "%pI6\n",
1319                                       &ha->ip_config.ipv6_link_local_addr);
1320                         break;
1321                 case ISCSI_NET_PARAM_IPV6_ROUTER:
1322                         len = sprintf(buf, "%pI6\n",
1323                                       &ha->ip_config.ipv6_default_router_addr);
1324                         break;
1325                 case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
1326                         pval = (ha->ip_config.ipv6_addl_options &
1327                                 IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE) ?
1328                                 "nd" : "static";
1329
1330                         len = sprintf(buf, "%s\n", pval);
1331                         break;
1332                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
1333                         pval = (ha->ip_config.ipv6_addl_options &
1334                                 IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR) ?
1335                                 "auto" : "static";
1336
1337                         len = sprintf(buf, "%s\n", pval);
1338                         break;
1339                 case ISCSI_NET_PARAM_VLAN_ID:
1340                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1341                                 ival = ha->ip_config.ipv4_vlan_tag &
1342                                        ISCSI_MAX_VLAN_ID;
1343                         else
1344                                 ival = ha->ip_config.ipv6_vlan_tag &
1345                                        ISCSI_MAX_VLAN_ID;
1346
1347                         len = sprintf(buf, "%d\n", ival);
1348                         break;
1349                 case ISCSI_NET_PARAM_VLAN_PRIORITY:
1350                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1351                                 ival = (ha->ip_config.ipv4_vlan_tag >> 13) &
1352                                        ISCSI_MAX_VLAN_PRIORITY;
1353                         else
1354                                 ival = (ha->ip_config.ipv6_vlan_tag >> 13) &
1355                                        ISCSI_MAX_VLAN_PRIORITY;
1356
1357                         len = sprintf(buf, "%d\n", ival);
1358                         break;
1359                 case ISCSI_NET_PARAM_VLAN_ENABLED:
1360                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1361                                 OP_STATE(ha->ip_config.ipv4_options,
1362                                          IPOPT_VLAN_TAGGING_ENABLE, pval);
1363                         } else {
1364                                 OP_STATE(ha->ip_config.ipv6_options,
1365                                          IPV6_OPT_VLAN_TAGGING_ENABLE, pval);
1366                         }
1367                         len = sprintf(buf, "%s\n", pval);
1368                         break;
1369                 case ISCSI_NET_PARAM_MTU:
1370                         len = sprintf(buf, "%d\n", ha->ip_config.eth_mtu_size);
1371                         break;
1372                 case ISCSI_NET_PARAM_PORT:
1373                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1374                                 len = sprintf(buf, "%d\n",
1375                                               ha->ip_config.ipv4_port);
1376                         else
1377                                 len = sprintf(buf, "%d\n",
1378                                               ha->ip_config.ipv6_port);
1379                         break;
1380                 case ISCSI_NET_PARAM_IPADDR_STATE:
1381                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1382                                 pval = iscsi_get_ipaddress_state_name(
1383                                                 ha->ip_config.ipv4_addr_state);
1384                         } else {
1385                                 if (iface->iface_num == 0)
1386                                         pval = iscsi_get_ipaddress_state_name(
1387                                                 ha->ip_config.ipv6_addr0_state);
1388                                 else if (iface->iface_num == 1)
1389                                         pval = iscsi_get_ipaddress_state_name(
1390                                                 ha->ip_config.ipv6_addr1_state);
1391                         }
1392
1393                         len = sprintf(buf, "%s\n", pval);
1394                         break;
1395                 case ISCSI_NET_PARAM_IPV6_LINKLOCAL_STATE:
1396                         pval = iscsi_get_ipaddress_state_name(
1397                                         ha->ip_config.ipv6_link_local_state);
1398                         len = sprintf(buf, "%s\n", pval);
1399                         break;
1400                 case ISCSI_NET_PARAM_IPV6_ROUTER_STATE:
1401                         pval = iscsi_get_router_state_name(
1402                                       ha->ip_config.ipv6_default_router_state);
1403                         len = sprintf(buf, "%s\n", pval);
1404                         break;
1405                 case ISCSI_NET_PARAM_DELAYED_ACK_EN:
1406                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1407                                 OP_STATE(~ha->ip_config.tcp_options,
1408                                          TCPOPT_DELAYED_ACK_DISABLE, pval);
1409                         } else {
1410                                 OP_STATE(~ha->ip_config.ipv6_tcp_options,
1411                                          IPV6_TCPOPT_DELAYED_ACK_DISABLE, pval);
1412                         }
1413                         len = sprintf(buf, "%s\n", pval);
1414                         break;
1415                 case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
1416                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1417                                 OP_STATE(~ha->ip_config.tcp_options,
1418                                          TCPOPT_NAGLE_ALGO_DISABLE, pval);
1419                         } else {
1420                                 OP_STATE(~ha->ip_config.ipv6_tcp_options,
1421                                          IPV6_TCPOPT_NAGLE_ALGO_DISABLE, pval);
1422                         }
1423                         len = sprintf(buf, "%s\n", pval);
1424                         break;
1425                 case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
1426                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1427                                 OP_STATE(~ha->ip_config.tcp_options,
1428                                          TCPOPT_WINDOW_SCALE_DISABLE, pval);
1429                         } else {
1430                                 OP_STATE(~ha->ip_config.ipv6_tcp_options,
1431                                          IPV6_TCPOPT_WINDOW_SCALE_DISABLE,
1432                                          pval);
1433                         }
1434                         len = sprintf(buf, "%s\n", pval);
1435                         break;
1436                 case ISCSI_NET_PARAM_TCP_WSF:
1437                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1438                                 len = sprintf(buf, "%d\n",
1439                                               ha->ip_config.tcp_wsf);
1440                         else
1441                                 len = sprintf(buf, "%d\n",
1442                                               ha->ip_config.ipv6_tcp_wsf);
1443                         break;
1444                 case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
1445                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1446                                 ival = (ha->ip_config.tcp_options &
1447                                         TCPOPT_TIMER_SCALE) >> 1;
1448                         else
1449                                 ival = (ha->ip_config.ipv6_tcp_options &
1450                                         IPV6_TCPOPT_TIMER_SCALE) >> 1;
1451
1452                         len = sprintf(buf, "%d\n", ival);
1453                         break;
1454                 case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
1455                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1456                                 OP_STATE(ha->ip_config.tcp_options,
1457                                          TCPOPT_TIMESTAMP_ENABLE, pval);
1458                         } else {
1459                                 OP_STATE(ha->ip_config.ipv6_tcp_options,
1460                                          IPV6_TCPOPT_TIMESTAMP_EN, pval);
1461                         }
1462                         len = sprintf(buf, "%s\n", pval);
1463                         break;
1464                 case ISCSI_NET_PARAM_CACHE_ID:
1465                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4)
1466                                 len = sprintf(buf, "%d\n",
1467                                               ha->ip_config.ipv4_cache_id);
1468                         else
1469                                 len = sprintf(buf, "%d\n",
1470                                               ha->ip_config.ipv6_cache_id);
1471                         break;
1472                 case ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN:
1473                         OP_STATE(ha->ip_config.tcp_options,
1474                                  TCPOPT_DNS_SERVER_IP_EN, pval);
1475
1476                         len = sprintf(buf, "%s\n", pval);
1477                         break;
1478                 case ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN:
1479                         OP_STATE(ha->ip_config.tcp_options,
1480                                  TCPOPT_SLP_DA_INFO_EN, pval);
1481
1482                         len = sprintf(buf, "%s\n", pval);
1483                         break;
1484                 case ISCSI_NET_PARAM_IPV4_TOS_EN:
1485                         OP_STATE(ha->ip_config.ipv4_options,
1486                                  IPOPT_IPV4_TOS_EN, pval);
1487
1488                         len = sprintf(buf, "%s\n", pval);
1489                         break;
1490                 case ISCSI_NET_PARAM_IPV4_TOS:
1491                         len = sprintf(buf, "%d\n", ha->ip_config.ipv4_tos);
1492                         break;
1493                 case ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN:
1494                         OP_STATE(ha->ip_config.ipv4_options,
1495                                  IPOPT_GRAT_ARP_EN, pval);
1496
1497                         len = sprintf(buf, "%s\n", pval);
1498                         break;
1499                 case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN:
1500                         OP_STATE(ha->ip_config.ipv4_options, IPOPT_ALT_CID_EN,
1501                                  pval);
1502
1503                         len = sprintf(buf, "%s\n", pval);
1504                         break;
1505                 case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID:
1506                         pval = (ha->ip_config.ipv4_alt_cid_len) ?
1507                                (char *)ha->ip_config.ipv4_alt_cid : "";
1508
1509                         len = sprintf(buf, "%s\n", pval);
1510                         break;
1511                 case ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN:
1512                         OP_STATE(ha->ip_config.ipv4_options,
1513                                  IPOPT_REQ_VID_EN, pval);
1514
1515                         len = sprintf(buf, "%s\n", pval);
1516                         break;
1517                 case ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN:
1518                         OP_STATE(ha->ip_config.ipv4_options,
1519                                  IPOPT_USE_VID_EN, pval);
1520
1521                         len = sprintf(buf, "%s\n", pval);
1522                         break;
1523                 case ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID:
1524                         pval = (ha->ip_config.ipv4_vid_len) ?
1525                                (char *)ha->ip_config.ipv4_vid : "";
1526
1527                         len = sprintf(buf, "%s\n", pval);
1528                         break;
1529                 case ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN:
1530                         OP_STATE(ha->ip_config.ipv4_options,
1531                                  IPOPT_LEARN_IQN_EN, pval);
1532
1533                         len = sprintf(buf, "%s\n", pval);
1534                         break;
1535                 case ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE:
1536                         OP_STATE(~ha->ip_config.ipv4_options,
1537                                  IPOPT_FRAGMENTATION_DISABLE, pval);
1538
1539                         len = sprintf(buf, "%s\n", pval);
1540                         break;
1541                 case ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN:
1542                         OP_STATE(ha->ip_config.ipv4_options,
1543                                  IPOPT_IN_FORWARD_EN, pval);
1544
1545                         len = sprintf(buf, "%s\n", pval);
1546                         break;
1547                 case ISCSI_NET_PARAM_REDIRECT_EN:
1548                         if (iface->iface_type == ISCSI_IFACE_TYPE_IPV4) {
1549                                 OP_STATE(ha->ip_config.ipv4_options,
1550                                          IPOPT_ARP_REDIRECT_EN, pval);
1551                         } else {
1552                                 OP_STATE(ha->ip_config.ipv6_options,
1553                                          IPV6_OPT_REDIRECT_EN, pval);
1554                         }
1555                         len = sprintf(buf, "%s\n", pval);
1556                         break;
1557                 case ISCSI_NET_PARAM_IPV4_TTL:
1558                         len = sprintf(buf, "%d\n", ha->ip_config.ipv4_ttl);
1559                         break;
1560                 case ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN:
1561                         OP_STATE(ha->ip_config.ipv6_options,
1562                                  IPV6_OPT_GRAT_NEIGHBOR_ADV_EN, pval);
1563
1564                         len = sprintf(buf, "%s\n", pval);
1565                         break;
1566                 case ISCSI_NET_PARAM_IPV6_MLD_EN:
1567                         OP_STATE(ha->ip_config.ipv6_addl_options,
1568                                  IPV6_ADDOPT_MLD_EN, pval);
1569
1570                         len = sprintf(buf, "%s\n", pval);
1571                         break;
1572                 case ISCSI_NET_PARAM_IPV6_FLOW_LABEL:
1573                         len = sprintf(buf, "%u\n", ha->ip_config.ipv6_flow_lbl);
1574                         break;
1575                 case ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS:
1576                         len = sprintf(buf, "%d\n",
1577                                       ha->ip_config.ipv6_traffic_class);
1578                         break;
1579                 case ISCSI_NET_PARAM_IPV6_HOP_LIMIT:
1580                         len = sprintf(buf, "%d\n",
1581                                       ha->ip_config.ipv6_hop_limit);
1582                         break;
1583                 case ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO:
1584                         len = sprintf(buf, "%d\n",
1585                                       ha->ip_config.ipv6_nd_reach_time);
1586                         break;
1587                 case ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME:
1588                         len = sprintf(buf, "%d\n",
1589                                       ha->ip_config.ipv6_nd_rexmit_timer);
1590                         break;
1591                 case ISCSI_NET_PARAM_IPV6_ND_STALE_TMO:
1592                         len = sprintf(buf, "%d\n",
1593                                       ha->ip_config.ipv6_nd_stale_timeout);
1594                         break;
1595                 case ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT:
1596                         len = sprintf(buf, "%d\n",
1597                                       ha->ip_config.ipv6_dup_addr_detect_count);
1598                         break;
1599                 case ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU:
1600                         len = sprintf(buf, "%d\n",
1601                                       ha->ip_config.ipv6_gw_advrt_mtu);
1602                         break;
1603                 default:
1604                         len = -ENOSYS;
1605                 }
1606         } else if (param_type == ISCSI_IFACE_PARAM) {
1607                 switch (param) {
1608                 case ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO:
1609                         len = sprintf(buf, "%d\n", ha->ip_config.def_timeout);
1610                         break;
1611                 case ISCSI_IFACE_PARAM_HDRDGST_EN:
1612                         OP_STATE(ha->ip_config.iscsi_options,
1613                                  ISCSIOPTS_HEADER_DIGEST_EN, pval);
1614
1615                         len = sprintf(buf, "%s\n", pval);
1616                         break;
1617                 case ISCSI_IFACE_PARAM_DATADGST_EN:
1618                         OP_STATE(ha->ip_config.iscsi_options,
1619                                  ISCSIOPTS_DATA_DIGEST_EN, pval);
1620
1621                         len = sprintf(buf, "%s\n", pval);
1622                         break;
1623                 case ISCSI_IFACE_PARAM_IMM_DATA_EN:
1624                         OP_STATE(ha->ip_config.iscsi_options,
1625                                  ISCSIOPTS_IMMEDIATE_DATA_EN, pval);
1626
1627                         len = sprintf(buf, "%s\n", pval);
1628                         break;
1629                 case ISCSI_IFACE_PARAM_INITIAL_R2T_EN:
1630                         OP_STATE(ha->ip_config.iscsi_options,
1631                                  ISCSIOPTS_INITIAL_R2T_EN, pval);
1632
1633                         len = sprintf(buf, "%s\n", pval);
1634                         break;
1635                 case ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN:
1636                         OP_STATE(ha->ip_config.iscsi_options,
1637                                  ISCSIOPTS_DATA_SEQ_INORDER_EN, pval);
1638
1639                         len = sprintf(buf, "%s\n", pval);
1640                         break;
1641                 case ISCSI_IFACE_PARAM_PDU_INORDER_EN:
1642                         OP_STATE(ha->ip_config.iscsi_options,
1643                                  ISCSIOPTS_DATA_PDU_INORDER_EN, pval);
1644
1645                         len = sprintf(buf, "%s\n", pval);
1646                         break;
1647                 case ISCSI_IFACE_PARAM_ERL:
1648                         len = sprintf(buf, "%d\n",
1649                                       (ha->ip_config.iscsi_options &
1650                                        ISCSIOPTS_ERL));
1651                         break;
1652                 case ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH:
1653                         len = sprintf(buf, "%u\n",
1654                                       ha->ip_config.iscsi_max_pdu_size *
1655                                       BYTE_UNITS);
1656                         break;
1657                 case ISCSI_IFACE_PARAM_FIRST_BURST:
1658                         len = sprintf(buf, "%u\n",
1659                                       ha->ip_config.iscsi_first_burst_len *
1660                                       BYTE_UNITS);
1661                         break;
1662                 case ISCSI_IFACE_PARAM_MAX_R2T:
1663                         len = sprintf(buf, "%d\n",
1664                                       ha->ip_config.iscsi_max_outstnd_r2t);
1665                         break;
1666                 case ISCSI_IFACE_PARAM_MAX_BURST:
1667                         len = sprintf(buf, "%u\n",
1668                                       ha->ip_config.iscsi_max_burst_len *
1669                                       BYTE_UNITS);
1670                         break;
1671                 case ISCSI_IFACE_PARAM_CHAP_AUTH_EN:
1672                         OP_STATE(ha->ip_config.iscsi_options,
1673                                  ISCSIOPTS_CHAP_AUTH_EN, pval);
1674
1675                         len = sprintf(buf, "%s\n", pval);
1676                         break;
1677                 case ISCSI_IFACE_PARAM_BIDI_CHAP_EN:
1678                         OP_STATE(ha->ip_config.iscsi_options,
1679                                  ISCSIOPTS_BIDI_CHAP_EN, pval);
1680
1681                         len = sprintf(buf, "%s\n", pval);
1682                         break;
1683                 case ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL:
1684                         OP_STATE(ha->ip_config.iscsi_options,
1685                                  ISCSIOPTS_DISCOVERY_AUTH_EN, pval);
1686
1687                         len = sprintf(buf, "%s\n", pval);
1688                         break;
1689                 case ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN:
1690                         OP_STATE(ha->ip_config.iscsi_options,
1691                                  ISCSIOPTS_DISCOVERY_LOGOUT_EN, pval);
1692
1693                         len = sprintf(buf, "%s\n", pval);
1694                         break;
1695                 case ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN:
1696                         OP_STATE(ha->ip_config.iscsi_options,
1697                                  ISCSIOPTS_STRICT_LOGIN_COMP_EN, pval);
1698
1699                         len = sprintf(buf, "%s\n", pval);
1700                         break;
1701                 case ISCSI_IFACE_PARAM_INITIATOR_NAME:
1702                         len = sprintf(buf, "%s\n", ha->ip_config.iscsi_name);
1703                         break;
1704                 default:
1705                         len = -ENOSYS;
1706                 }
1707         }
1708
1709         return len;
1710 }
1711
1712 static struct iscsi_endpoint *
1713 qla4xxx_ep_connect(struct Scsi_Host *shost, struct sockaddr *dst_addr,
1714                    int non_blocking)
1715 {
1716         int ret;
1717         struct iscsi_endpoint *ep;
1718         struct qla_endpoint *qla_ep;
1719         struct scsi_qla_host *ha;
1720         struct sockaddr_in *addr;
1721         struct sockaddr_in6 *addr6;
1722
1723         if (!shost) {
1724                 ret = -ENXIO;
1725                 pr_err("%s: shost is NULL\n", __func__);
1726                 return ERR_PTR(ret);
1727         }
1728
1729         ha = iscsi_host_priv(shost);
1730         ep = iscsi_create_endpoint(sizeof(struct qla_endpoint));
1731         if (!ep) {
1732                 ret = -ENOMEM;
1733                 return ERR_PTR(ret);
1734         }
1735
1736         qla_ep = ep->dd_data;
1737         memset(qla_ep, 0, sizeof(struct qla_endpoint));
1738         if (dst_addr->sa_family == AF_INET) {
1739                 memcpy(&qla_ep->dst_addr, dst_addr, sizeof(struct sockaddr_in));
1740                 addr = (struct sockaddr_in *)&qla_ep->dst_addr;
1741                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI4\n", __func__,
1742                                   (char *)&addr->sin_addr));
1743         } else if (dst_addr->sa_family == AF_INET6) {
1744                 memcpy(&qla_ep->dst_addr, dst_addr,
1745                        sizeof(struct sockaddr_in6));
1746                 addr6 = (struct sockaddr_in6 *)&qla_ep->dst_addr;
1747                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: %pI6\n", __func__,
1748                                   (char *)&addr6->sin6_addr));
1749         } else {
1750                 ql4_printk(KERN_WARNING, ha, "%s: Invalid endpoint\n",
1751                            __func__);
1752         }
1753
1754         qla_ep->host = shost;
1755
1756         return ep;
1757 }
1758
1759 static int qla4xxx_ep_poll(struct iscsi_endpoint *ep, int timeout_ms)
1760 {
1761         struct qla_endpoint *qla_ep;
1762         struct scsi_qla_host *ha;
1763         int ret = 0;
1764
1765         qla_ep = ep->dd_data;
1766         ha = to_qla_host(qla_ep->host);
1767         DEBUG2(pr_info_ratelimited("%s: host: %ld\n", __func__, ha->host_no));
1768
1769         if (adapter_up(ha) && !test_bit(AF_BUILD_DDB_LIST, &ha->flags))
1770                 ret = 1;
1771
1772         return ret;
1773 }
1774
1775 static void qla4xxx_ep_disconnect(struct iscsi_endpoint *ep)
1776 {
1777         struct qla_endpoint *qla_ep;
1778         struct scsi_qla_host *ha;
1779
1780         qla_ep = ep->dd_data;
1781         ha = to_qla_host(qla_ep->host);
1782         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
1783                           ha->host_no));
1784         iscsi_destroy_endpoint(ep);
1785 }
1786
1787 static int qla4xxx_get_ep_param(struct iscsi_endpoint *ep,
1788                                 enum iscsi_param param,
1789                                 char *buf)
1790 {
1791         struct qla_endpoint *qla_ep = ep->dd_data;
1792         struct sockaddr *dst_addr;
1793         struct scsi_qla_host *ha;
1794
1795         if (!qla_ep)
1796                 return -ENOTCONN;
1797
1798         ha = to_qla_host(qla_ep->host);
1799         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
1800                           ha->host_no));
1801
1802         switch (param) {
1803         case ISCSI_PARAM_CONN_PORT:
1804         case ISCSI_PARAM_CONN_ADDRESS:
1805                 dst_addr = (struct sockaddr *)&qla_ep->dst_addr;
1806                 if (!dst_addr)
1807                         return -ENOTCONN;
1808
1809                 return iscsi_conn_get_addr_param((struct sockaddr_storage *)
1810                                                  &qla_ep->dst_addr, param, buf);
1811         default:
1812                 return -ENOSYS;
1813         }
1814 }
1815
1816 static void qla4xxx_conn_get_stats(struct iscsi_cls_conn *cls_conn,
1817                                    struct iscsi_stats *stats)
1818 {
1819         struct iscsi_session *sess;
1820         struct iscsi_cls_session *cls_sess;
1821         struct ddb_entry *ddb_entry;
1822         struct scsi_qla_host *ha;
1823         struct ql_iscsi_stats *ql_iscsi_stats;
1824         int stats_size;
1825         int ret;
1826         dma_addr_t iscsi_stats_dma;
1827
1828         cls_sess = iscsi_conn_to_session(cls_conn);
1829         sess = cls_sess->dd_data;
1830         ddb_entry = sess->dd_data;
1831         ha = ddb_entry->ha;
1832
1833         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
1834                           ha->host_no));
1835         stats_size = PAGE_ALIGN(sizeof(struct ql_iscsi_stats));
1836         /* Allocate memory */
1837         ql_iscsi_stats = dma_alloc_coherent(&ha->pdev->dev, stats_size,
1838                                             &iscsi_stats_dma, GFP_KERNEL);
1839         if (!ql_iscsi_stats) {
1840                 ql4_printk(KERN_ERR, ha,
1841                            "Unable to allocate memory for iscsi stats\n");
1842                 goto exit_get_stats;
1843         }
1844
1845         ret =  qla4xxx_get_mgmt_data(ha, ddb_entry->fw_ddb_index, stats_size,
1846                                      iscsi_stats_dma);
1847         if (ret != QLA_SUCCESS) {
1848                 ql4_printk(KERN_ERR, ha,
1849                            "Unable to retrieve iscsi stats\n");
1850                 goto free_stats;
1851         }
1852
1853         /* octets */
1854         stats->txdata_octets = le64_to_cpu(ql_iscsi_stats->tx_data_octets);
1855         stats->rxdata_octets = le64_to_cpu(ql_iscsi_stats->rx_data_octets);
1856         /* xmit pdus */
1857         stats->noptx_pdus = le32_to_cpu(ql_iscsi_stats->tx_nopout_pdus);
1858         stats->scsicmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_cmd_pdus);
1859         stats->tmfcmd_pdus = le32_to_cpu(ql_iscsi_stats->tx_tmf_cmd_pdus);
1860         stats->login_pdus = le32_to_cpu(ql_iscsi_stats->tx_login_cmd_pdus);
1861         stats->text_pdus = le32_to_cpu(ql_iscsi_stats->tx_text_cmd_pdus);
1862         stats->dataout_pdus = le32_to_cpu(ql_iscsi_stats->tx_scsi_write_pdus);
1863         stats->logout_pdus = le32_to_cpu(ql_iscsi_stats->tx_logout_cmd_pdus);
1864         stats->snack_pdus = le32_to_cpu(ql_iscsi_stats->tx_snack_req_pdus);
1865         /* recv pdus */
1866         stats->noprx_pdus = le32_to_cpu(ql_iscsi_stats->rx_nopin_pdus);
1867         stats->scsirsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_resp_pdus);
1868         stats->tmfrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_tmf_resp_pdus);
1869         stats->textrsp_pdus = le32_to_cpu(ql_iscsi_stats->rx_text_resp_pdus);
1870         stats->datain_pdus = le32_to_cpu(ql_iscsi_stats->rx_scsi_read_pdus);
1871         stats->logoutrsp_pdus =
1872                         le32_to_cpu(ql_iscsi_stats->rx_logout_resp_pdus);
1873         stats->r2t_pdus = le32_to_cpu(ql_iscsi_stats->rx_r2t_pdus);
1874         stats->async_pdus = le32_to_cpu(ql_iscsi_stats->rx_async_pdus);
1875         stats->rjt_pdus = le32_to_cpu(ql_iscsi_stats->rx_reject_pdus);
1876
1877 free_stats:
1878         dma_free_coherent(&ha->pdev->dev, stats_size, ql_iscsi_stats,
1879                           iscsi_stats_dma);
1880 exit_get_stats:
1881         return;
1882 }
1883
1884 static enum blk_eh_timer_return qla4xxx_eh_cmd_timed_out(struct scsi_cmnd *sc)
1885 {
1886         struct iscsi_cls_session *session;
1887         unsigned long flags;
1888         enum blk_eh_timer_return ret = BLK_EH_DONE;
1889
1890         session = starget_to_session(scsi_target(sc->device));
1891
1892         spin_lock_irqsave(&session->lock, flags);
1893         if (session->state == ISCSI_SESSION_FAILED)
1894                 ret = BLK_EH_RESET_TIMER;
1895         spin_unlock_irqrestore(&session->lock, flags);
1896
1897         return ret;
1898 }
1899
1900 static void qla4xxx_set_port_speed(struct Scsi_Host *shost)
1901 {
1902         struct scsi_qla_host *ha = to_qla_host(shost);
1903         struct iscsi_cls_host *ihost = shost->shost_data;
1904         uint32_t speed = ISCSI_PORT_SPEED_UNKNOWN;
1905
1906         qla4xxx_get_firmware_state(ha);
1907
1908         switch (ha->addl_fw_state & 0x0F00) {
1909         case FW_ADDSTATE_LINK_SPEED_10MBPS:
1910                 speed = ISCSI_PORT_SPEED_10MBPS;
1911                 break;
1912         case FW_ADDSTATE_LINK_SPEED_100MBPS:
1913                 speed = ISCSI_PORT_SPEED_100MBPS;
1914                 break;
1915         case FW_ADDSTATE_LINK_SPEED_1GBPS:
1916                 speed = ISCSI_PORT_SPEED_1GBPS;
1917                 break;
1918         case FW_ADDSTATE_LINK_SPEED_10GBPS:
1919                 speed = ISCSI_PORT_SPEED_10GBPS;
1920                 break;
1921         }
1922         ihost->port_speed = speed;
1923 }
1924
1925 static void qla4xxx_set_port_state(struct Scsi_Host *shost)
1926 {
1927         struct scsi_qla_host *ha = to_qla_host(shost);
1928         struct iscsi_cls_host *ihost = shost->shost_data;
1929         uint32_t state = ISCSI_PORT_STATE_DOWN;
1930
1931         if (test_bit(AF_LINK_UP, &ha->flags))
1932                 state = ISCSI_PORT_STATE_UP;
1933
1934         ihost->port_state = state;
1935 }
1936
1937 static int qla4xxx_host_get_param(struct Scsi_Host *shost,
1938                                   enum iscsi_host_param param, char *buf)
1939 {
1940         struct scsi_qla_host *ha = to_qla_host(shost);
1941         int len;
1942
1943         switch (param) {
1944         case ISCSI_HOST_PARAM_HWADDRESS:
1945                 len = sysfs_format_mac(buf, ha->my_mac, MAC_ADDR_LEN);
1946                 break;
1947         case ISCSI_HOST_PARAM_IPADDRESS:
1948                 len = sprintf(buf, "%pI4\n", &ha->ip_config.ip_address);
1949                 break;
1950         case ISCSI_HOST_PARAM_INITIATOR_NAME:
1951                 len = sprintf(buf, "%s\n", ha->name_string);
1952                 break;
1953         case ISCSI_HOST_PARAM_PORT_STATE:
1954                 qla4xxx_set_port_state(shost);
1955                 len = sprintf(buf, "%s\n", iscsi_get_port_state_name(shost));
1956                 break;
1957         case ISCSI_HOST_PARAM_PORT_SPEED:
1958                 qla4xxx_set_port_speed(shost);
1959                 len = sprintf(buf, "%s\n", iscsi_get_port_speed_name(shost));
1960                 break;
1961         default:
1962                 return -ENOSYS;
1963         }
1964
1965         return len;
1966 }
1967
1968 static void qla4xxx_create_ipv4_iface(struct scsi_qla_host *ha)
1969 {
1970         if (ha->iface_ipv4)
1971                 return;
1972
1973         /* IPv4 */
1974         ha->iface_ipv4 = iscsi_create_iface(ha->host,
1975                                             &qla4xxx_iscsi_transport,
1976                                             ISCSI_IFACE_TYPE_IPV4, 0, 0);
1977         if (!ha->iface_ipv4)
1978                 ql4_printk(KERN_ERR, ha, "Could not create IPv4 iSCSI "
1979                            "iface0.\n");
1980 }
1981
1982 static void qla4xxx_create_ipv6_iface(struct scsi_qla_host *ha)
1983 {
1984         if (!ha->iface_ipv6_0)
1985                 /* IPv6 iface-0 */
1986                 ha->iface_ipv6_0 = iscsi_create_iface(ha->host,
1987                                                       &qla4xxx_iscsi_transport,
1988                                                       ISCSI_IFACE_TYPE_IPV6, 0,
1989                                                       0);
1990         if (!ha->iface_ipv6_0)
1991                 ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
1992                            "iface0.\n");
1993
1994         if (!ha->iface_ipv6_1)
1995                 /* IPv6 iface-1 */
1996                 ha->iface_ipv6_1 = iscsi_create_iface(ha->host,
1997                                                       &qla4xxx_iscsi_transport,
1998                                                       ISCSI_IFACE_TYPE_IPV6, 1,
1999                                                       0);
2000         if (!ha->iface_ipv6_1)
2001                 ql4_printk(KERN_ERR, ha, "Could not create IPv6 iSCSI "
2002                            "iface1.\n");
2003 }
2004
2005 static void qla4xxx_create_ifaces(struct scsi_qla_host *ha)
2006 {
2007         if (ha->ip_config.ipv4_options & IPOPT_IPV4_PROTOCOL_ENABLE)
2008                 qla4xxx_create_ipv4_iface(ha);
2009
2010         if (ha->ip_config.ipv6_options & IPV6_OPT_IPV6_PROTOCOL_ENABLE)
2011                 qla4xxx_create_ipv6_iface(ha);
2012 }
2013
2014 static void qla4xxx_destroy_ipv4_iface(struct scsi_qla_host *ha)
2015 {
2016         if (ha->iface_ipv4) {
2017                 iscsi_destroy_iface(ha->iface_ipv4);
2018                 ha->iface_ipv4 = NULL;
2019         }
2020 }
2021
2022 static void qla4xxx_destroy_ipv6_iface(struct scsi_qla_host *ha)
2023 {
2024         if (ha->iface_ipv6_0) {
2025                 iscsi_destroy_iface(ha->iface_ipv6_0);
2026                 ha->iface_ipv6_0 = NULL;
2027         }
2028         if (ha->iface_ipv6_1) {
2029                 iscsi_destroy_iface(ha->iface_ipv6_1);
2030                 ha->iface_ipv6_1 = NULL;
2031         }
2032 }
2033
2034 static void qla4xxx_destroy_ifaces(struct scsi_qla_host *ha)
2035 {
2036         qla4xxx_destroy_ipv4_iface(ha);
2037         qla4xxx_destroy_ipv6_iface(ha);
2038 }
2039
2040 static void qla4xxx_set_ipv6(struct scsi_qla_host *ha,
2041                              struct iscsi_iface_param_info *iface_param,
2042                              struct addr_ctrl_blk *init_fw_cb)
2043 {
2044         /*
2045          * iface_num 0 is valid for IPv6 Addr, linklocal, router, autocfg.
2046          * iface_num 1 is valid only for IPv6 Addr.
2047          */
2048         switch (iface_param->param) {
2049         case ISCSI_NET_PARAM_IPV6_ADDR:
2050                 if (iface_param->iface_num & 0x1)
2051                         /* IPv6 Addr 1 */
2052                         memcpy(init_fw_cb->ipv6_addr1, iface_param->value,
2053                                sizeof(init_fw_cb->ipv6_addr1));
2054                 else
2055                         /* IPv6 Addr 0 */
2056                         memcpy(init_fw_cb->ipv6_addr0, iface_param->value,
2057                                sizeof(init_fw_cb->ipv6_addr0));
2058                 break;
2059         case ISCSI_NET_PARAM_IPV6_LINKLOCAL:
2060                 if (iface_param->iface_num & 0x1)
2061                         break;
2062                 memcpy(init_fw_cb->ipv6_if_id, &iface_param->value[8],
2063                        sizeof(init_fw_cb->ipv6_if_id));
2064                 break;
2065         case ISCSI_NET_PARAM_IPV6_ROUTER:
2066                 if (iface_param->iface_num & 0x1)
2067                         break;
2068                 memcpy(init_fw_cb->ipv6_dflt_rtr_addr, iface_param->value,
2069                        sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
2070                 break;
2071         case ISCSI_NET_PARAM_IPV6_ADDR_AUTOCFG:
2072                 /* Autocfg applies to even interface */
2073                 if (iface_param->iface_num & 0x1)
2074                         break;
2075
2076                 if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_DISABLE)
2077                         init_fw_cb->ipv6_addtl_opts &=
2078                                 cpu_to_le16(
2079                                   ~IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
2080                 else if (iface_param->value[0] == ISCSI_IPV6_AUTOCFG_ND_ENABLE)
2081                         init_fw_cb->ipv6_addtl_opts |=
2082                                 cpu_to_le16(
2083                                   IPV6_ADDOPT_NEIGHBOR_DISCOVERY_ADDR_ENABLE);
2084                 else
2085                         ql4_printk(KERN_ERR, ha,
2086                                    "Invalid autocfg setting for IPv6 addr\n");
2087                 break;
2088         case ISCSI_NET_PARAM_IPV6_LINKLOCAL_AUTOCFG:
2089                 /* Autocfg applies to even interface */
2090                 if (iface_param->iface_num & 0x1)
2091                         break;
2092
2093                 if (iface_param->value[0] ==
2094                     ISCSI_IPV6_LINKLOCAL_AUTOCFG_ENABLE)
2095                         init_fw_cb->ipv6_addtl_opts |= cpu_to_le16(
2096                                         IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
2097                 else if (iface_param->value[0] ==
2098                          ISCSI_IPV6_LINKLOCAL_AUTOCFG_DISABLE)
2099                         init_fw_cb->ipv6_addtl_opts &= cpu_to_le16(
2100                                        ~IPV6_ADDOPT_AUTOCONFIG_LINK_LOCAL_ADDR);
2101                 else
2102                         ql4_printk(KERN_ERR, ha,
2103                                    "Invalid autocfg setting for IPv6 linklocal addr\n");
2104                 break;
2105         case ISCSI_NET_PARAM_IPV6_ROUTER_AUTOCFG:
2106                 /* Autocfg applies to even interface */
2107                 if (iface_param->iface_num & 0x1)
2108                         break;
2109
2110                 if (iface_param->value[0] == ISCSI_IPV6_ROUTER_AUTOCFG_ENABLE)
2111                         memset(init_fw_cb->ipv6_dflt_rtr_addr, 0,
2112                                sizeof(init_fw_cb->ipv6_dflt_rtr_addr));
2113                 break;
2114         case ISCSI_NET_PARAM_IFACE_ENABLE:
2115                 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
2116                         init_fw_cb->ipv6_opts |=
2117                                 cpu_to_le16(IPV6_OPT_IPV6_PROTOCOL_ENABLE);
2118                         qla4xxx_create_ipv6_iface(ha);
2119                 } else {
2120                         init_fw_cb->ipv6_opts &=
2121                                 cpu_to_le16(~IPV6_OPT_IPV6_PROTOCOL_ENABLE &
2122                                             0xFFFF);
2123                         qla4xxx_destroy_ipv6_iface(ha);
2124                 }
2125                 break;
2126         case ISCSI_NET_PARAM_VLAN_TAG:
2127                 if (iface_param->len != sizeof(init_fw_cb->ipv6_vlan_tag))
2128                         break;
2129                 init_fw_cb->ipv6_vlan_tag =
2130                                 cpu_to_be16(*(uint16_t *)iface_param->value);
2131                 break;
2132         case ISCSI_NET_PARAM_VLAN_ENABLED:
2133                 if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
2134                         init_fw_cb->ipv6_opts |=
2135                                 cpu_to_le16(IPV6_OPT_VLAN_TAGGING_ENABLE);
2136                 else
2137                         init_fw_cb->ipv6_opts &=
2138                                 cpu_to_le16(~IPV6_OPT_VLAN_TAGGING_ENABLE);
2139                 break;
2140         case ISCSI_NET_PARAM_MTU:
2141                 init_fw_cb->eth_mtu_size =
2142                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2143                 break;
2144         case ISCSI_NET_PARAM_PORT:
2145                 /* Autocfg applies to even interface */
2146                 if (iface_param->iface_num & 0x1)
2147                         break;
2148
2149                 init_fw_cb->ipv6_port =
2150                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2151                 break;
2152         case ISCSI_NET_PARAM_DELAYED_ACK_EN:
2153                 if (iface_param->iface_num & 0x1)
2154                         break;
2155                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2156                         init_fw_cb->ipv6_tcp_opts |=
2157                                 cpu_to_le16(IPV6_TCPOPT_DELAYED_ACK_DISABLE);
2158                 else
2159                         init_fw_cb->ipv6_tcp_opts &=
2160                                 cpu_to_le16(~IPV6_TCPOPT_DELAYED_ACK_DISABLE &
2161                                             0xFFFF);
2162                 break;
2163         case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
2164                 if (iface_param->iface_num & 0x1)
2165                         break;
2166                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2167                         init_fw_cb->ipv6_tcp_opts |=
2168                                 cpu_to_le16(IPV6_TCPOPT_NAGLE_ALGO_DISABLE);
2169                 else
2170                         init_fw_cb->ipv6_tcp_opts &=
2171                                 cpu_to_le16(~IPV6_TCPOPT_NAGLE_ALGO_DISABLE);
2172                 break;
2173         case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
2174                 if (iface_param->iface_num & 0x1)
2175                         break;
2176                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2177                         init_fw_cb->ipv6_tcp_opts |=
2178                                 cpu_to_le16(IPV6_TCPOPT_WINDOW_SCALE_DISABLE);
2179                 else
2180                         init_fw_cb->ipv6_tcp_opts &=
2181                                 cpu_to_le16(~IPV6_TCPOPT_WINDOW_SCALE_DISABLE);
2182                 break;
2183         case ISCSI_NET_PARAM_TCP_WSF:
2184                 if (iface_param->iface_num & 0x1)
2185                         break;
2186                 init_fw_cb->ipv6_tcp_wsf = iface_param->value[0];
2187                 break;
2188         case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
2189                 if (iface_param->iface_num & 0x1)
2190                         break;
2191                 init_fw_cb->ipv6_tcp_opts &=
2192                                         cpu_to_le16(~IPV6_TCPOPT_TIMER_SCALE);
2193                 init_fw_cb->ipv6_tcp_opts |=
2194                                 cpu_to_le16((iface_param->value[0] << 1) &
2195                                             IPV6_TCPOPT_TIMER_SCALE);
2196                 break;
2197         case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
2198                 if (iface_param->iface_num & 0x1)
2199                         break;
2200                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2201                         init_fw_cb->ipv6_tcp_opts |=
2202                                 cpu_to_le16(IPV6_TCPOPT_TIMESTAMP_EN);
2203                 else
2204                         init_fw_cb->ipv6_tcp_opts &=
2205                                 cpu_to_le16(~IPV6_TCPOPT_TIMESTAMP_EN);
2206                 break;
2207         case ISCSI_NET_PARAM_IPV6_GRAT_NEIGHBOR_ADV_EN:
2208                 if (iface_param->iface_num & 0x1)
2209                         break;
2210                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2211                         init_fw_cb->ipv6_opts |=
2212                                 cpu_to_le16(IPV6_OPT_GRAT_NEIGHBOR_ADV_EN);
2213                 else
2214                         init_fw_cb->ipv6_opts &=
2215                                 cpu_to_le16(~IPV6_OPT_GRAT_NEIGHBOR_ADV_EN);
2216                 break;
2217         case ISCSI_NET_PARAM_REDIRECT_EN:
2218                 if (iface_param->iface_num & 0x1)
2219                         break;
2220                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2221                         init_fw_cb->ipv6_opts |=
2222                                 cpu_to_le16(IPV6_OPT_REDIRECT_EN);
2223                 else
2224                         init_fw_cb->ipv6_opts &=
2225                                 cpu_to_le16(~IPV6_OPT_REDIRECT_EN);
2226                 break;
2227         case ISCSI_NET_PARAM_IPV6_MLD_EN:
2228                 if (iface_param->iface_num & 0x1)
2229                         break;
2230                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2231                         init_fw_cb->ipv6_addtl_opts |=
2232                                 cpu_to_le16(IPV6_ADDOPT_MLD_EN);
2233                 else
2234                         init_fw_cb->ipv6_addtl_opts &=
2235                                 cpu_to_le16(~IPV6_ADDOPT_MLD_EN);
2236                 break;
2237         case ISCSI_NET_PARAM_IPV6_FLOW_LABEL:
2238                 if (iface_param->iface_num & 0x1)
2239                         break;
2240                 init_fw_cb->ipv6_flow_lbl =
2241                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2242                 break;
2243         case ISCSI_NET_PARAM_IPV6_TRAFFIC_CLASS:
2244                 if (iface_param->iface_num & 0x1)
2245                         break;
2246                 init_fw_cb->ipv6_traffic_class = iface_param->value[0];
2247                 break;
2248         case ISCSI_NET_PARAM_IPV6_HOP_LIMIT:
2249                 if (iface_param->iface_num & 0x1)
2250                         break;
2251                 init_fw_cb->ipv6_hop_limit = iface_param->value[0];
2252                 break;
2253         case ISCSI_NET_PARAM_IPV6_ND_REACHABLE_TMO:
2254                 if (iface_param->iface_num & 0x1)
2255                         break;
2256                 init_fw_cb->ipv6_nd_reach_time =
2257                                 cpu_to_le32(*(uint32_t *)iface_param->value);
2258                 break;
2259         case ISCSI_NET_PARAM_IPV6_ND_REXMIT_TIME:
2260                 if (iface_param->iface_num & 0x1)
2261                         break;
2262                 init_fw_cb->ipv6_nd_rexmit_timer =
2263                                 cpu_to_le32(*(uint32_t *)iface_param->value);
2264                 break;
2265         case ISCSI_NET_PARAM_IPV6_ND_STALE_TMO:
2266                 if (iface_param->iface_num & 0x1)
2267                         break;
2268                 init_fw_cb->ipv6_nd_stale_timeout =
2269                                 cpu_to_le32(*(uint32_t *)iface_param->value);
2270                 break;
2271         case ISCSI_NET_PARAM_IPV6_DUP_ADDR_DETECT_CNT:
2272                 if (iface_param->iface_num & 0x1)
2273                         break;
2274                 init_fw_cb->ipv6_dup_addr_detect_count = iface_param->value[0];
2275                 break;
2276         case ISCSI_NET_PARAM_IPV6_RTR_ADV_LINK_MTU:
2277                 if (iface_param->iface_num & 0x1)
2278                         break;
2279                 init_fw_cb->ipv6_gw_advrt_mtu =
2280                                 cpu_to_le32(*(uint32_t *)iface_param->value);
2281                 break;
2282         default:
2283                 ql4_printk(KERN_ERR, ha, "Unknown IPv6 param = %d\n",
2284                            iface_param->param);
2285                 break;
2286         }
2287 }
2288
2289 static void qla4xxx_set_ipv4(struct scsi_qla_host *ha,
2290                              struct iscsi_iface_param_info *iface_param,
2291                              struct addr_ctrl_blk *init_fw_cb)
2292 {
2293         switch (iface_param->param) {
2294         case ISCSI_NET_PARAM_IPV4_ADDR:
2295                 memcpy(init_fw_cb->ipv4_addr, iface_param->value,
2296                        sizeof(init_fw_cb->ipv4_addr));
2297                 break;
2298         case ISCSI_NET_PARAM_IPV4_SUBNET:
2299                 memcpy(init_fw_cb->ipv4_subnet, iface_param->value,
2300                        sizeof(init_fw_cb->ipv4_subnet));
2301                 break;
2302         case ISCSI_NET_PARAM_IPV4_GW:
2303                 memcpy(init_fw_cb->ipv4_gw_addr, iface_param->value,
2304                        sizeof(init_fw_cb->ipv4_gw_addr));
2305                 break;
2306         case ISCSI_NET_PARAM_IPV4_BOOTPROTO:
2307                 if (iface_param->value[0] == ISCSI_BOOTPROTO_DHCP)
2308                         init_fw_cb->ipv4_tcp_opts |=
2309                                         cpu_to_le16(TCPOPT_DHCP_ENABLE);
2310                 else if (iface_param->value[0] == ISCSI_BOOTPROTO_STATIC)
2311                         init_fw_cb->ipv4_tcp_opts &=
2312                                         cpu_to_le16(~TCPOPT_DHCP_ENABLE);
2313                 else
2314                         ql4_printk(KERN_ERR, ha, "Invalid IPv4 bootproto\n");
2315                 break;
2316         case ISCSI_NET_PARAM_IFACE_ENABLE:
2317                 if (iface_param->value[0] == ISCSI_IFACE_ENABLE) {
2318                         init_fw_cb->ipv4_ip_opts |=
2319                                 cpu_to_le16(IPOPT_IPV4_PROTOCOL_ENABLE);
2320                         qla4xxx_create_ipv4_iface(ha);
2321                 } else {
2322                         init_fw_cb->ipv4_ip_opts &=
2323                                 cpu_to_le16(~IPOPT_IPV4_PROTOCOL_ENABLE &
2324                                             0xFFFF);
2325                         qla4xxx_destroy_ipv4_iface(ha);
2326                 }
2327                 break;
2328         case ISCSI_NET_PARAM_VLAN_TAG:
2329                 if (iface_param->len != sizeof(init_fw_cb->ipv4_vlan_tag))
2330                         break;
2331                 init_fw_cb->ipv4_vlan_tag =
2332                                 cpu_to_be16(*(uint16_t *)iface_param->value);
2333                 break;
2334         case ISCSI_NET_PARAM_VLAN_ENABLED:
2335                 if (iface_param->value[0] == ISCSI_VLAN_ENABLE)
2336                         init_fw_cb->ipv4_ip_opts |=
2337                                         cpu_to_le16(IPOPT_VLAN_TAGGING_ENABLE);
2338                 else
2339                         init_fw_cb->ipv4_ip_opts &=
2340                                         cpu_to_le16(~IPOPT_VLAN_TAGGING_ENABLE);
2341                 break;
2342         case ISCSI_NET_PARAM_MTU:
2343                 init_fw_cb->eth_mtu_size =
2344                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2345                 break;
2346         case ISCSI_NET_PARAM_PORT:
2347                 init_fw_cb->ipv4_port =
2348                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2349                 break;
2350         case ISCSI_NET_PARAM_DELAYED_ACK_EN:
2351                 if (iface_param->iface_num & 0x1)
2352                         break;
2353                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2354                         init_fw_cb->ipv4_tcp_opts |=
2355                                 cpu_to_le16(TCPOPT_DELAYED_ACK_DISABLE);
2356                 else
2357                         init_fw_cb->ipv4_tcp_opts &=
2358                                 cpu_to_le16(~TCPOPT_DELAYED_ACK_DISABLE &
2359                                             0xFFFF);
2360                 break;
2361         case ISCSI_NET_PARAM_TCP_NAGLE_DISABLE:
2362                 if (iface_param->iface_num & 0x1)
2363                         break;
2364                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2365                         init_fw_cb->ipv4_tcp_opts |=
2366                                 cpu_to_le16(TCPOPT_NAGLE_ALGO_DISABLE);
2367                 else
2368                         init_fw_cb->ipv4_tcp_opts &=
2369                                 cpu_to_le16(~TCPOPT_NAGLE_ALGO_DISABLE);
2370                 break;
2371         case ISCSI_NET_PARAM_TCP_WSF_DISABLE:
2372                 if (iface_param->iface_num & 0x1)
2373                         break;
2374                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2375                         init_fw_cb->ipv4_tcp_opts |=
2376                                 cpu_to_le16(TCPOPT_WINDOW_SCALE_DISABLE);
2377                 else
2378                         init_fw_cb->ipv4_tcp_opts &=
2379                                 cpu_to_le16(~TCPOPT_WINDOW_SCALE_DISABLE);
2380                 break;
2381         case ISCSI_NET_PARAM_TCP_WSF:
2382                 if (iface_param->iface_num & 0x1)
2383                         break;
2384                 init_fw_cb->ipv4_tcp_wsf = iface_param->value[0];
2385                 break;
2386         case ISCSI_NET_PARAM_TCP_TIMER_SCALE:
2387                 if (iface_param->iface_num & 0x1)
2388                         break;
2389                 init_fw_cb->ipv4_tcp_opts &= cpu_to_le16(~TCPOPT_TIMER_SCALE);
2390                 init_fw_cb->ipv4_tcp_opts |=
2391                                 cpu_to_le16((iface_param->value[0] << 1) &
2392                                             TCPOPT_TIMER_SCALE);
2393                 break;
2394         case ISCSI_NET_PARAM_TCP_TIMESTAMP_EN:
2395                 if (iface_param->iface_num & 0x1)
2396                         break;
2397                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2398                         init_fw_cb->ipv4_tcp_opts |=
2399                                 cpu_to_le16(TCPOPT_TIMESTAMP_ENABLE);
2400                 else
2401                         init_fw_cb->ipv4_tcp_opts &=
2402                                 cpu_to_le16(~TCPOPT_TIMESTAMP_ENABLE);
2403                 break;
2404         case ISCSI_NET_PARAM_IPV4_DHCP_DNS_ADDR_EN:
2405                 if (iface_param->iface_num & 0x1)
2406                         break;
2407                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2408                         init_fw_cb->ipv4_tcp_opts |=
2409                                 cpu_to_le16(TCPOPT_DNS_SERVER_IP_EN);
2410                 else
2411                         init_fw_cb->ipv4_tcp_opts &=
2412                                 cpu_to_le16(~TCPOPT_DNS_SERVER_IP_EN);
2413                 break;
2414         case ISCSI_NET_PARAM_IPV4_DHCP_SLP_DA_EN:
2415                 if (iface_param->iface_num & 0x1)
2416                         break;
2417                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2418                         init_fw_cb->ipv4_tcp_opts |=
2419                                 cpu_to_le16(TCPOPT_SLP_DA_INFO_EN);
2420                 else
2421                         init_fw_cb->ipv4_tcp_opts &=
2422                                 cpu_to_le16(~TCPOPT_SLP_DA_INFO_EN);
2423                 break;
2424         case ISCSI_NET_PARAM_IPV4_TOS_EN:
2425                 if (iface_param->iface_num & 0x1)
2426                         break;
2427                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2428                         init_fw_cb->ipv4_ip_opts |=
2429                                 cpu_to_le16(IPOPT_IPV4_TOS_EN);
2430                 else
2431                         init_fw_cb->ipv4_ip_opts &=
2432                                 cpu_to_le16(~IPOPT_IPV4_TOS_EN);
2433                 break;
2434         case ISCSI_NET_PARAM_IPV4_TOS:
2435                 if (iface_param->iface_num & 0x1)
2436                         break;
2437                 init_fw_cb->ipv4_tos = iface_param->value[0];
2438                 break;
2439         case ISCSI_NET_PARAM_IPV4_GRAT_ARP_EN:
2440                 if (iface_param->iface_num & 0x1)
2441                         break;
2442                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2443                         init_fw_cb->ipv4_ip_opts |=
2444                                         cpu_to_le16(IPOPT_GRAT_ARP_EN);
2445                 else
2446                         init_fw_cb->ipv4_ip_opts &=
2447                                         cpu_to_le16(~IPOPT_GRAT_ARP_EN);
2448                 break;
2449         case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID_EN:
2450                 if (iface_param->iface_num & 0x1)
2451                         break;
2452                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2453                         init_fw_cb->ipv4_ip_opts |=
2454                                 cpu_to_le16(IPOPT_ALT_CID_EN);
2455                 else
2456                         init_fw_cb->ipv4_ip_opts &=
2457                                 cpu_to_le16(~IPOPT_ALT_CID_EN);
2458                 break;
2459         case ISCSI_NET_PARAM_IPV4_DHCP_ALT_CLIENT_ID:
2460                 if (iface_param->iface_num & 0x1)
2461                         break;
2462                 memcpy(init_fw_cb->ipv4_dhcp_alt_cid, iface_param->value,
2463                        (sizeof(init_fw_cb->ipv4_dhcp_alt_cid) - 1));
2464                 init_fw_cb->ipv4_dhcp_alt_cid_len =
2465                                         strlen(init_fw_cb->ipv4_dhcp_alt_cid);
2466                 break;
2467         case ISCSI_NET_PARAM_IPV4_DHCP_REQ_VENDOR_ID_EN:
2468                 if (iface_param->iface_num & 0x1)
2469                         break;
2470                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2471                         init_fw_cb->ipv4_ip_opts |=
2472                                         cpu_to_le16(IPOPT_REQ_VID_EN);
2473                 else
2474                         init_fw_cb->ipv4_ip_opts &=
2475                                         cpu_to_le16(~IPOPT_REQ_VID_EN);
2476                 break;
2477         case ISCSI_NET_PARAM_IPV4_DHCP_USE_VENDOR_ID_EN:
2478                 if (iface_param->iface_num & 0x1)
2479                         break;
2480                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2481                         init_fw_cb->ipv4_ip_opts |=
2482                                         cpu_to_le16(IPOPT_USE_VID_EN);
2483                 else
2484                         init_fw_cb->ipv4_ip_opts &=
2485                                         cpu_to_le16(~IPOPT_USE_VID_EN);
2486                 break;
2487         case ISCSI_NET_PARAM_IPV4_DHCP_VENDOR_ID:
2488                 if (iface_param->iface_num & 0x1)
2489                         break;
2490                 memcpy(init_fw_cb->ipv4_dhcp_vid, iface_param->value,
2491                        (sizeof(init_fw_cb->ipv4_dhcp_vid) - 1));
2492                 init_fw_cb->ipv4_dhcp_vid_len =
2493                                         strlen(init_fw_cb->ipv4_dhcp_vid);
2494                 break;
2495         case ISCSI_NET_PARAM_IPV4_DHCP_LEARN_IQN_EN:
2496                 if (iface_param->iface_num & 0x1)
2497                         break;
2498                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2499                         init_fw_cb->ipv4_ip_opts |=
2500                                         cpu_to_le16(IPOPT_LEARN_IQN_EN);
2501                 else
2502                         init_fw_cb->ipv4_ip_opts &=
2503                                         cpu_to_le16(~IPOPT_LEARN_IQN_EN);
2504                 break;
2505         case ISCSI_NET_PARAM_IPV4_FRAGMENT_DISABLE:
2506                 if (iface_param->iface_num & 0x1)
2507                         break;
2508                 if (iface_param->value[0] == ISCSI_NET_PARAM_DISABLE)
2509                         init_fw_cb->ipv4_ip_opts |=
2510                                 cpu_to_le16(IPOPT_FRAGMENTATION_DISABLE);
2511                 else
2512                         init_fw_cb->ipv4_ip_opts &=
2513                                 cpu_to_le16(~IPOPT_FRAGMENTATION_DISABLE);
2514                 break;
2515         case ISCSI_NET_PARAM_IPV4_IN_FORWARD_EN:
2516                 if (iface_param->iface_num & 0x1)
2517                         break;
2518                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2519                         init_fw_cb->ipv4_ip_opts |=
2520                                 cpu_to_le16(IPOPT_IN_FORWARD_EN);
2521                 else
2522                         init_fw_cb->ipv4_ip_opts &=
2523                                 cpu_to_le16(~IPOPT_IN_FORWARD_EN);
2524                 break;
2525         case ISCSI_NET_PARAM_REDIRECT_EN:
2526                 if (iface_param->iface_num & 0x1)
2527                         break;
2528                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2529                         init_fw_cb->ipv4_ip_opts |=
2530                                 cpu_to_le16(IPOPT_ARP_REDIRECT_EN);
2531                 else
2532                         init_fw_cb->ipv4_ip_opts &=
2533                                 cpu_to_le16(~IPOPT_ARP_REDIRECT_EN);
2534                 break;
2535         case ISCSI_NET_PARAM_IPV4_TTL:
2536                 if (iface_param->iface_num & 0x1)
2537                         break;
2538                 init_fw_cb->ipv4_ttl = iface_param->value[0];
2539                 break;
2540         default:
2541                 ql4_printk(KERN_ERR, ha, "Unknown IPv4 param = %d\n",
2542                            iface_param->param);
2543                 break;
2544         }
2545 }
2546
2547 static void qla4xxx_set_iscsi_param(struct scsi_qla_host *ha,
2548                                     struct iscsi_iface_param_info *iface_param,
2549                                     struct addr_ctrl_blk *init_fw_cb)
2550 {
2551         switch (iface_param->param) {
2552         case ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO:
2553                 if (iface_param->iface_num & 0x1)
2554                         break;
2555                 init_fw_cb->def_timeout =
2556                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2557                 break;
2558         case ISCSI_IFACE_PARAM_HDRDGST_EN:
2559                 if (iface_param->iface_num & 0x1)
2560                         break;
2561                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2562                         init_fw_cb->iscsi_opts |=
2563                                 cpu_to_le16(ISCSIOPTS_HEADER_DIGEST_EN);
2564                 else
2565                         init_fw_cb->iscsi_opts &=
2566                                 cpu_to_le16(~ISCSIOPTS_HEADER_DIGEST_EN);
2567                 break;
2568         case ISCSI_IFACE_PARAM_DATADGST_EN:
2569                 if (iface_param->iface_num & 0x1)
2570                         break;
2571                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2572                         init_fw_cb->iscsi_opts |=
2573                                 cpu_to_le16(ISCSIOPTS_DATA_DIGEST_EN);
2574                 else
2575                         init_fw_cb->iscsi_opts &=
2576                                 cpu_to_le16(~ISCSIOPTS_DATA_DIGEST_EN);
2577                 break;
2578         case ISCSI_IFACE_PARAM_IMM_DATA_EN:
2579                 if (iface_param->iface_num & 0x1)
2580                         break;
2581                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2582                         init_fw_cb->iscsi_opts |=
2583                                 cpu_to_le16(ISCSIOPTS_IMMEDIATE_DATA_EN);
2584                 else
2585                         init_fw_cb->iscsi_opts &=
2586                                 cpu_to_le16(~ISCSIOPTS_IMMEDIATE_DATA_EN);
2587                 break;
2588         case ISCSI_IFACE_PARAM_INITIAL_R2T_EN:
2589                 if (iface_param->iface_num & 0x1)
2590                         break;
2591                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2592                         init_fw_cb->iscsi_opts |=
2593                                 cpu_to_le16(ISCSIOPTS_INITIAL_R2T_EN);
2594                 else
2595                         init_fw_cb->iscsi_opts &=
2596                                 cpu_to_le16(~ISCSIOPTS_INITIAL_R2T_EN);
2597                 break;
2598         case ISCSI_IFACE_PARAM_DATASEQ_INORDER_EN:
2599                 if (iface_param->iface_num & 0x1)
2600                         break;
2601                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2602                         init_fw_cb->iscsi_opts |=
2603                                 cpu_to_le16(ISCSIOPTS_DATA_SEQ_INORDER_EN);
2604                 else
2605                         init_fw_cb->iscsi_opts &=
2606                                 cpu_to_le16(~ISCSIOPTS_DATA_SEQ_INORDER_EN);
2607                 break;
2608         case ISCSI_IFACE_PARAM_PDU_INORDER_EN:
2609                 if (iface_param->iface_num & 0x1)
2610                         break;
2611                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2612                         init_fw_cb->iscsi_opts |=
2613                                 cpu_to_le16(ISCSIOPTS_DATA_PDU_INORDER_EN);
2614                 else
2615                         init_fw_cb->iscsi_opts &=
2616                                 cpu_to_le16(~ISCSIOPTS_DATA_PDU_INORDER_EN);
2617                 break;
2618         case ISCSI_IFACE_PARAM_ERL:
2619                 if (iface_param->iface_num & 0x1)
2620                         break;
2621                 init_fw_cb->iscsi_opts &= cpu_to_le16(~ISCSIOPTS_ERL);
2622                 init_fw_cb->iscsi_opts |= cpu_to_le16(iface_param->value[0] &
2623                                                       ISCSIOPTS_ERL);
2624                 break;
2625         case ISCSI_IFACE_PARAM_MAX_RECV_DLENGTH:
2626                 if (iface_param->iface_num & 0x1)
2627                         break;
2628                 init_fw_cb->iscsi_max_pdu_size =
2629                                 cpu_to_le32(*(uint32_t *)iface_param->value) /
2630                                 BYTE_UNITS;
2631                 break;
2632         case ISCSI_IFACE_PARAM_FIRST_BURST:
2633                 if (iface_param->iface_num & 0x1)
2634                         break;
2635                 init_fw_cb->iscsi_fburst_len =
2636                                 cpu_to_le32(*(uint32_t *)iface_param->value) /
2637                                 BYTE_UNITS;
2638                 break;
2639         case ISCSI_IFACE_PARAM_MAX_R2T:
2640                 if (iface_param->iface_num & 0x1)
2641                         break;
2642                 init_fw_cb->iscsi_max_outstnd_r2t =
2643                                 cpu_to_le16(*(uint16_t *)iface_param->value);
2644                 break;
2645         case ISCSI_IFACE_PARAM_MAX_BURST:
2646                 if (iface_param->iface_num & 0x1)
2647                         break;
2648                 init_fw_cb->iscsi_max_burst_len =
2649                                 cpu_to_le32(*(uint32_t *)iface_param->value) /
2650                                 BYTE_UNITS;
2651                 break;
2652         case ISCSI_IFACE_PARAM_CHAP_AUTH_EN:
2653                 if (iface_param->iface_num & 0x1)
2654                         break;
2655                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2656                         init_fw_cb->iscsi_opts |=
2657                                 cpu_to_le16(ISCSIOPTS_CHAP_AUTH_EN);
2658                 else
2659                         init_fw_cb->iscsi_opts &=
2660                                 cpu_to_le16(~ISCSIOPTS_CHAP_AUTH_EN);
2661                 break;
2662         case ISCSI_IFACE_PARAM_BIDI_CHAP_EN:
2663                 if (iface_param->iface_num & 0x1)
2664                         break;
2665                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2666                         init_fw_cb->iscsi_opts |=
2667                                 cpu_to_le16(ISCSIOPTS_BIDI_CHAP_EN);
2668                 else
2669                         init_fw_cb->iscsi_opts &=
2670                                 cpu_to_le16(~ISCSIOPTS_BIDI_CHAP_EN);
2671                 break;
2672         case ISCSI_IFACE_PARAM_DISCOVERY_AUTH_OPTIONAL:
2673                 if (iface_param->iface_num & 0x1)
2674                         break;
2675                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2676                         init_fw_cb->iscsi_opts |=
2677                                 cpu_to_le16(ISCSIOPTS_DISCOVERY_AUTH_EN);
2678                 else
2679                         init_fw_cb->iscsi_opts &=
2680                                 cpu_to_le16(~ISCSIOPTS_DISCOVERY_AUTH_EN);
2681                 break;
2682         case ISCSI_IFACE_PARAM_DISCOVERY_LOGOUT_EN:
2683                 if (iface_param->iface_num & 0x1)
2684                         break;
2685                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2686                         init_fw_cb->iscsi_opts |=
2687                                 cpu_to_le16(ISCSIOPTS_DISCOVERY_LOGOUT_EN);
2688                 else
2689                         init_fw_cb->iscsi_opts &=
2690                                 cpu_to_le16(~ISCSIOPTS_DISCOVERY_LOGOUT_EN);
2691                 break;
2692         case ISCSI_IFACE_PARAM_STRICT_LOGIN_COMP_EN:
2693                 if (iface_param->iface_num & 0x1)
2694                         break;
2695                 if (iface_param->value[0] == ISCSI_NET_PARAM_ENABLE)
2696                         init_fw_cb->iscsi_opts |=
2697                                 cpu_to_le16(ISCSIOPTS_STRICT_LOGIN_COMP_EN);
2698                 else
2699                         init_fw_cb->iscsi_opts &=
2700                                 cpu_to_le16(~ISCSIOPTS_STRICT_LOGIN_COMP_EN);
2701                 break;
2702         default:
2703                 ql4_printk(KERN_ERR, ha, "Unknown iscsi param = %d\n",
2704                            iface_param->param);
2705                 break;
2706         }
2707 }
2708
2709 static void
2710 qla4xxx_initcb_to_acb(struct addr_ctrl_blk *init_fw_cb)
2711 {
2712         struct addr_ctrl_blk_def *acb;
2713         acb = (struct addr_ctrl_blk_def *)init_fw_cb;
2714         memset(acb->reserved1, 0, sizeof(acb->reserved1));
2715         memset(acb->reserved2, 0, sizeof(acb->reserved2));
2716         memset(acb->reserved3, 0, sizeof(acb->reserved3));
2717         memset(acb->reserved4, 0, sizeof(acb->reserved4));
2718         memset(acb->reserved5, 0, sizeof(acb->reserved5));
2719         memset(acb->reserved6, 0, sizeof(acb->reserved6));
2720         memset(acb->reserved7, 0, sizeof(acb->reserved7));
2721         memset(acb->reserved8, 0, sizeof(acb->reserved8));
2722         memset(acb->reserved9, 0, sizeof(acb->reserved9));
2723         memset(acb->reserved10, 0, sizeof(acb->reserved10));
2724         memset(acb->reserved11, 0, sizeof(acb->reserved11));
2725         memset(acb->reserved12, 0, sizeof(acb->reserved12));
2726         memset(acb->reserved13, 0, sizeof(acb->reserved13));
2727         memset(acb->reserved14, 0, sizeof(acb->reserved14));
2728         memset(acb->reserved15, 0, sizeof(acb->reserved15));
2729 }
2730
2731 static int
2732 qla4xxx_iface_set_param(struct Scsi_Host *shost, void *data, uint32_t len)
2733 {
2734         struct scsi_qla_host *ha = to_qla_host(shost);
2735         int rval = 0;
2736         struct iscsi_iface_param_info *iface_param = NULL;
2737         struct addr_ctrl_blk *init_fw_cb = NULL;
2738         dma_addr_t init_fw_cb_dma;
2739         uint32_t mbox_cmd[MBOX_REG_COUNT];
2740         uint32_t mbox_sts[MBOX_REG_COUNT];
2741         uint32_t rem = len;
2742         struct nlattr *attr;
2743
2744         init_fw_cb = dma_alloc_coherent(&ha->pdev->dev,
2745                                         sizeof(struct addr_ctrl_blk),
2746                                         &init_fw_cb_dma, GFP_KERNEL);
2747         if (!init_fw_cb) {
2748                 ql4_printk(KERN_ERR, ha, "%s: Unable to alloc init_cb\n",
2749                            __func__);
2750                 return -ENOMEM;
2751         }
2752
2753         memset(&mbox_cmd, 0, sizeof(mbox_cmd));
2754         memset(&mbox_sts, 0, sizeof(mbox_sts));
2755
2756         if (qla4xxx_get_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma)) {
2757                 ql4_printk(KERN_ERR, ha, "%s: get ifcb failed\n", __func__);
2758                 rval = -EIO;
2759                 goto exit_init_fw_cb;
2760         }
2761
2762         nla_for_each_attr(attr, data, len, rem) {
2763                 if (nla_len(attr) < sizeof(*iface_param)) {
2764                         rval = -EINVAL;
2765                         goto exit_init_fw_cb;
2766                 }
2767
2768                 iface_param = nla_data(attr);
2769
2770                 if (iface_param->param_type == ISCSI_NET_PARAM) {
2771                         switch (iface_param->iface_type) {
2772                         case ISCSI_IFACE_TYPE_IPV4:
2773                                 switch (iface_param->iface_num) {
2774                                 case 0:
2775                                         qla4xxx_set_ipv4(ha, iface_param,
2776                                                          init_fw_cb);
2777                                         break;
2778                                 default:
2779                                 /* Cannot have more than one IPv4 interface */
2780                                         ql4_printk(KERN_ERR, ha,
2781                                                    "Invalid IPv4 iface number = %d\n",
2782                                                    iface_param->iface_num);
2783                                         break;
2784                                 }
2785                                 break;
2786                         case ISCSI_IFACE_TYPE_IPV6:
2787                                 switch (iface_param->iface_num) {
2788                                 case 0:
2789                                 case 1:
2790                                         qla4xxx_set_ipv6(ha, iface_param,
2791                                                          init_fw_cb);
2792                                         break;
2793                                 default:
2794                                 /* Cannot have more than two IPv6 interface */
2795                                         ql4_printk(KERN_ERR, ha,
2796                                                    "Invalid IPv6 iface number = %d\n",
2797                                                    iface_param->iface_num);
2798                                         break;
2799                                 }
2800                                 break;
2801                         default:
2802                                 ql4_printk(KERN_ERR, ha,
2803                                            "Invalid iface type\n");
2804                                 break;
2805                         }
2806                 } else if (iface_param->param_type == ISCSI_IFACE_PARAM) {
2807                                 qla4xxx_set_iscsi_param(ha, iface_param,
2808                                                         init_fw_cb);
2809                 } else {
2810                         continue;
2811                 }
2812         }
2813
2814         init_fw_cb->cookie = cpu_to_le32(0x11BEAD5A);
2815
2816         rval = qla4xxx_set_flash(ha, init_fw_cb_dma, FLASH_SEGMENT_IFCB,
2817                                  sizeof(struct addr_ctrl_blk),
2818                                  FLASH_OPT_RMW_COMMIT);
2819         if (rval != QLA_SUCCESS) {
2820                 ql4_printk(KERN_ERR, ha, "%s: set flash mbx failed\n",
2821                            __func__);
2822                 rval = -EIO;
2823                 goto exit_init_fw_cb;
2824         }
2825
2826         rval = qla4xxx_disable_acb(ha);
2827         if (rval != QLA_SUCCESS) {
2828                 ql4_printk(KERN_ERR, ha, "%s: disable acb mbx failed\n",
2829                            __func__);
2830                 rval = -EIO;
2831                 goto exit_init_fw_cb;
2832         }
2833
2834         wait_for_completion_timeout(&ha->disable_acb_comp,
2835                                     DISABLE_ACB_TOV * HZ);
2836
2837         qla4xxx_initcb_to_acb(init_fw_cb);
2838
2839         rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb_dma);
2840         if (rval != QLA_SUCCESS) {
2841                 ql4_printk(KERN_ERR, ha, "%s: set acb mbx failed\n",
2842                            __func__);
2843                 rval = -EIO;
2844                 goto exit_init_fw_cb;
2845         }
2846
2847         memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
2848         qla4xxx_update_local_ifcb(ha, &mbox_cmd[0], &mbox_sts[0], init_fw_cb,
2849                                   init_fw_cb_dma);
2850
2851 exit_init_fw_cb:
2852         dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
2853                           init_fw_cb, init_fw_cb_dma);
2854
2855         return rval;
2856 }
2857
2858 static int qla4xxx_session_get_param(struct iscsi_cls_session *cls_sess,
2859                                      enum iscsi_param param, char *buf)
2860 {
2861         struct iscsi_session *sess = cls_sess->dd_data;
2862         struct ddb_entry *ddb_entry = sess->dd_data;
2863         struct scsi_qla_host *ha = ddb_entry->ha;
2864         struct iscsi_cls_conn *cls_conn = ddb_entry->conn;
2865         struct ql4_chap_table chap_tbl;
2866         int rval, len;
2867         uint16_t idx;
2868
2869         memset(&chap_tbl, 0, sizeof(chap_tbl));
2870         switch (param) {
2871         case ISCSI_PARAM_CHAP_IN_IDX:
2872                 rval = qla4xxx_get_chap_index(ha, sess->username_in,
2873                                               sess->password_in, BIDI_CHAP,
2874                                               &idx);
2875                 if (rval)
2876                         len = sprintf(buf, "\n");
2877                 else
2878                         len = sprintf(buf, "%hu\n", idx);
2879                 break;
2880         case ISCSI_PARAM_CHAP_OUT_IDX:
2881                 if (ddb_entry->ddb_type == FLASH_DDB) {
2882                         if (ddb_entry->chap_tbl_idx != INVALID_ENTRY) {
2883                                 idx = ddb_entry->chap_tbl_idx;
2884                                 rval = QLA_SUCCESS;
2885                         } else {
2886                                 rval = QLA_ERROR;
2887                         }
2888                 } else {
2889                         rval = qla4xxx_get_chap_index(ha, sess->username,
2890                                                       sess->password,
2891                                                       LOCAL_CHAP, &idx);
2892                 }
2893                 if (rval)
2894                         len = sprintf(buf, "\n");
2895                 else
2896                         len = sprintf(buf, "%hu\n", idx);
2897                 break;
2898         case ISCSI_PARAM_USERNAME:
2899         case ISCSI_PARAM_PASSWORD:
2900                 /* First, populate session username and password for FLASH DDB,
2901                  * if not already done. This happens when session login fails
2902                  * for a FLASH DDB.
2903                  */
2904                 if (ddb_entry->ddb_type == FLASH_DDB &&
2905                     ddb_entry->chap_tbl_idx != INVALID_ENTRY &&
2906                     !sess->username && !sess->password) {
2907                         idx = ddb_entry->chap_tbl_idx;
2908                         rval = qla4xxx_get_uni_chap_at_index(ha, chap_tbl.name,
2909                                                             chap_tbl.secret,
2910                                                             idx);
2911                         if (!rval) {
2912                                 iscsi_set_param(cls_conn, ISCSI_PARAM_USERNAME,
2913                                                 (char *)chap_tbl.name,
2914                                                 strlen((char *)chap_tbl.name));
2915                                 iscsi_set_param(cls_conn, ISCSI_PARAM_PASSWORD,
2916                                                 (char *)chap_tbl.secret,
2917                                                 chap_tbl.secret_len);
2918                         }
2919                 }
2920                 fallthrough;
2921         default:
2922                 return iscsi_session_get_param(cls_sess, param, buf);
2923         }
2924
2925         return len;
2926 }
2927
2928 static int qla4xxx_conn_get_param(struct iscsi_cls_conn *cls_conn,
2929                                   enum iscsi_param param, char *buf)
2930 {
2931         struct iscsi_conn *conn;
2932         struct qla_conn *qla_conn;
2933         struct sockaddr *dst_addr;
2934
2935         conn = cls_conn->dd_data;
2936         qla_conn = conn->dd_data;
2937         dst_addr = (struct sockaddr *)&qla_conn->qla_ep->dst_addr;
2938
2939         switch (param) {
2940         case ISCSI_PARAM_CONN_PORT:
2941         case ISCSI_PARAM_CONN_ADDRESS:
2942                 return iscsi_conn_get_addr_param((struct sockaddr_storage *)
2943                                                  dst_addr, param, buf);
2944         default:
2945                 return iscsi_conn_get_param(cls_conn, param, buf);
2946         }
2947 }
2948
2949 int qla4xxx_get_ddb_index(struct scsi_qla_host *ha, uint16_t *ddb_index)
2950 {
2951         uint32_t mbx_sts = 0;
2952         uint16_t tmp_ddb_index;
2953         int ret;
2954
2955 get_ddb_index:
2956         tmp_ddb_index = find_first_zero_bit(ha->ddb_idx_map, MAX_DDB_ENTRIES);
2957
2958         if (tmp_ddb_index >= MAX_DDB_ENTRIES) {
2959                 DEBUG2(ql4_printk(KERN_INFO, ha,
2960                                   "Free DDB index not available\n"));
2961                 ret = QLA_ERROR;
2962                 goto exit_get_ddb_index;
2963         }
2964
2965         if (test_and_set_bit(tmp_ddb_index, ha->ddb_idx_map))
2966                 goto get_ddb_index;
2967
2968         DEBUG2(ql4_printk(KERN_INFO, ha,
2969                           "Found a free DDB index at %d\n", tmp_ddb_index));
2970         ret = qla4xxx_req_ddb_entry(ha, tmp_ddb_index, &mbx_sts);
2971         if (ret == QLA_ERROR) {
2972                 if (mbx_sts == MBOX_STS_COMMAND_ERROR) {
2973                         ql4_printk(KERN_INFO, ha,
2974                                    "DDB index = %d not available trying next\n",
2975                                    tmp_ddb_index);
2976                         goto get_ddb_index;
2977                 }
2978                 DEBUG2(ql4_printk(KERN_INFO, ha,
2979                                   "Free FW DDB not available\n"));
2980         }
2981
2982         *ddb_index = tmp_ddb_index;
2983
2984 exit_get_ddb_index:
2985         return ret;
2986 }
2987
2988 static int qla4xxx_match_ipaddress(struct scsi_qla_host *ha,
2989                                    struct ddb_entry *ddb_entry,
2990                                    char *existing_ipaddr,
2991                                    char *user_ipaddr)
2992 {
2993         uint8_t dst_ipaddr[IPv6_ADDR_LEN];
2994         char formatted_ipaddr[DDB_IPADDR_LEN];
2995         int status = QLA_SUCCESS, ret = 0;
2996
2997         if (ddb_entry->fw_ddb_entry.options & DDB_OPT_IPV6_DEVICE) {
2998                 ret = in6_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
2999                                '\0', NULL);
3000                 if (ret == 0) {
3001                         status = QLA_ERROR;
3002                         goto out_match;
3003                 }
3004                 ret = sprintf(formatted_ipaddr, "%pI6", dst_ipaddr);
3005         } else {
3006                 ret = in4_pton(user_ipaddr, strlen(user_ipaddr), dst_ipaddr,
3007                                '\0', NULL);
3008                 if (ret == 0) {
3009                         status = QLA_ERROR;
3010                         goto out_match;
3011                 }
3012                 ret = sprintf(formatted_ipaddr, "%pI4", dst_ipaddr);
3013         }
3014
3015         if (strcmp(existing_ipaddr, formatted_ipaddr))
3016                 status = QLA_ERROR;
3017
3018 out_match:
3019         return status;
3020 }
3021
3022 static int qla4xxx_match_fwdb_session(struct scsi_qla_host *ha,
3023                                       struct iscsi_cls_conn *cls_conn)
3024 {
3025         int idx = 0, max_ddbs, rval;
3026         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
3027         struct iscsi_session *sess, *existing_sess;
3028         struct iscsi_conn *conn, *existing_conn;
3029         struct ddb_entry *ddb_entry;
3030
3031         sess = cls_sess->dd_data;
3032         conn = cls_conn->dd_data;
3033
3034         if (sess->targetname == NULL ||
3035             conn->persistent_address == NULL ||
3036             conn->persistent_port == 0)
3037                 return QLA_ERROR;
3038
3039         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
3040                                      MAX_DEV_DB_ENTRIES;
3041
3042         for (idx = 0; idx < max_ddbs; idx++) {
3043                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
3044                 if (ddb_entry == NULL)
3045                         continue;
3046
3047                 if (ddb_entry->ddb_type != FLASH_DDB)
3048                         continue;
3049
3050                 existing_sess = ddb_entry->sess->dd_data;
3051                 existing_conn = ddb_entry->conn->dd_data;
3052
3053                 if (existing_sess->targetname == NULL ||
3054                     existing_conn->persistent_address == NULL ||
3055                     existing_conn->persistent_port == 0)
3056                         continue;
3057
3058                 DEBUG2(ql4_printk(KERN_INFO, ha,
3059                                   "IQN = %s User IQN = %s\n",
3060                                   existing_sess->targetname,
3061                                   sess->targetname));
3062
3063                 DEBUG2(ql4_printk(KERN_INFO, ha,
3064                                   "IP = %s User IP = %s\n",
3065                                   existing_conn->persistent_address,
3066                                   conn->persistent_address));
3067
3068                 DEBUG2(ql4_printk(KERN_INFO, ha,
3069                                   "Port = %d User Port = %d\n",
3070                                   existing_conn->persistent_port,
3071                                   conn->persistent_port));
3072
3073                 if (strcmp(existing_sess->targetname, sess->targetname))
3074                         continue;
3075                 rval = qla4xxx_match_ipaddress(ha, ddb_entry,
3076                                         existing_conn->persistent_address,
3077                                         conn->persistent_address);
3078                 if (rval == QLA_ERROR)
3079                         continue;
3080                 if (existing_conn->persistent_port != conn->persistent_port)
3081                         continue;
3082                 break;
3083         }
3084
3085         if (idx == max_ddbs)
3086                 return QLA_ERROR;
3087
3088         DEBUG2(ql4_printk(KERN_INFO, ha,
3089                           "Match found in fwdb sessions\n"));
3090         return QLA_SUCCESS;
3091 }
3092
3093 static struct iscsi_cls_session *
3094 qla4xxx_session_create(struct iscsi_endpoint *ep,
3095                         uint16_t cmds_max, uint16_t qdepth,
3096                         uint32_t initial_cmdsn)
3097 {
3098         struct iscsi_cls_session *cls_sess;
3099         struct scsi_qla_host *ha;
3100         struct qla_endpoint *qla_ep;
3101         struct ddb_entry *ddb_entry;
3102         uint16_t ddb_index;
3103         struct iscsi_session *sess;
3104         int ret;
3105
3106         if (!ep) {
3107                 printk(KERN_ERR "qla4xxx: missing ep.\n");
3108                 return NULL;
3109         }
3110
3111         qla_ep = ep->dd_data;
3112         ha = to_qla_host(qla_ep->host);
3113         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
3114                           ha->host_no));
3115
3116         ret = qla4xxx_get_ddb_index(ha, &ddb_index);
3117         if (ret == QLA_ERROR)
3118                 return NULL;
3119
3120         cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, qla_ep->host,
3121                                        cmds_max, sizeof(struct ddb_entry),
3122                                        sizeof(struct ql4_task_data),
3123                                        initial_cmdsn, ddb_index);
3124         if (!cls_sess)
3125                 return NULL;
3126
3127         sess = cls_sess->dd_data;
3128         ddb_entry = sess->dd_data;
3129         ddb_entry->fw_ddb_index = ddb_index;
3130         ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
3131         ddb_entry->ha = ha;
3132         ddb_entry->sess = cls_sess;
3133         ddb_entry->unblock_sess = qla4xxx_unblock_ddb;
3134         ddb_entry->ddb_change = qla4xxx_ddb_change;
3135         clear_bit(DDB_CONN_CLOSE_FAILURE, &ddb_entry->flags);
3136         cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
3137         ha->fw_ddb_index_map[ddb_entry->fw_ddb_index] = ddb_entry;
3138         ha->tot_ddbs++;
3139
3140         return cls_sess;
3141 }
3142
3143 static void qla4xxx_session_destroy(struct iscsi_cls_session *cls_sess)
3144 {
3145         struct iscsi_session *sess;
3146         struct ddb_entry *ddb_entry;
3147         struct scsi_qla_host *ha;
3148         unsigned long flags, wtime;
3149         struct dev_db_entry *fw_ddb_entry = NULL;
3150         dma_addr_t fw_ddb_entry_dma;
3151         uint32_t ddb_state;
3152         int ret;
3153
3154         sess = cls_sess->dd_data;
3155         ddb_entry = sess->dd_data;
3156         ha = ddb_entry->ha;
3157         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: host: %ld\n", __func__,
3158                           ha->host_no));
3159
3160         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3161                                           &fw_ddb_entry_dma, GFP_KERNEL);
3162         if (!fw_ddb_entry) {
3163                 ql4_printk(KERN_ERR, ha,
3164                            "%s: Unable to allocate dma buffer\n", __func__);
3165                 goto destroy_session;
3166         }
3167
3168         wtime = jiffies + (HZ * LOGOUT_TOV);
3169         do {
3170                 ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
3171                                               fw_ddb_entry, fw_ddb_entry_dma,
3172                                               NULL, NULL, &ddb_state, NULL,
3173                                               NULL, NULL);
3174                 if (ret == QLA_ERROR)
3175                         goto destroy_session;
3176
3177                 if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
3178                     (ddb_state == DDB_DS_SESSION_FAILED))
3179                         goto destroy_session;
3180
3181                 schedule_timeout_uninterruptible(HZ);
3182         } while ((time_after(wtime, jiffies)));
3183
3184 destroy_session:
3185         qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
3186         if (test_and_clear_bit(DDB_CONN_CLOSE_FAILURE, &ddb_entry->flags))
3187                 clear_bit(ddb_entry->fw_ddb_index, ha->ddb_idx_map);
3188         spin_lock_irqsave(&ha->hardware_lock, flags);
3189         qla4xxx_free_ddb(ha, ddb_entry);
3190         spin_unlock_irqrestore(&ha->hardware_lock, flags);
3191
3192         iscsi_session_teardown(cls_sess);
3193
3194         if (fw_ddb_entry)
3195                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3196                                   fw_ddb_entry, fw_ddb_entry_dma);
3197 }
3198
3199 static struct iscsi_cls_conn *
3200 qla4xxx_conn_create(struct iscsi_cls_session *cls_sess, uint32_t conn_idx)
3201 {
3202         struct iscsi_cls_conn *cls_conn;
3203         struct iscsi_session *sess;
3204         struct ddb_entry *ddb_entry;
3205         struct scsi_qla_host *ha;
3206
3207         cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn),
3208                                     conn_idx);
3209         if (!cls_conn) {
3210                 pr_info("%s: Can not create connection for conn_idx = %u\n",
3211                         __func__, conn_idx);
3212                 return NULL;
3213         }
3214
3215         sess = cls_sess->dd_data;
3216         ddb_entry = sess->dd_data;
3217         ddb_entry->conn = cls_conn;
3218
3219         ha = ddb_entry->ha;
3220         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: conn_idx = %u\n", __func__,
3221                           conn_idx));
3222         return cls_conn;
3223 }
3224
3225 static int qla4xxx_conn_bind(struct iscsi_cls_session *cls_session,
3226                              struct iscsi_cls_conn *cls_conn,
3227                              uint64_t transport_fd, int is_leading)
3228 {
3229         struct iscsi_conn *conn;
3230         struct qla_conn *qla_conn;
3231         struct iscsi_endpoint *ep;
3232         struct ddb_entry *ddb_entry;
3233         struct scsi_qla_host *ha;
3234         struct iscsi_session *sess;
3235
3236         sess = cls_session->dd_data;
3237         ddb_entry = sess->dd_data;
3238         ha = ddb_entry->ha;
3239
3240         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: sid = %d, cid = %d\n", __func__,
3241                           cls_session->sid, cls_conn->cid));
3242
3243         if (iscsi_conn_bind(cls_session, cls_conn, is_leading))
3244                 return -EINVAL;
3245         ep = iscsi_lookup_endpoint(transport_fd);
3246         if (!ep)
3247                 return -EINVAL;
3248         conn = cls_conn->dd_data;
3249         qla_conn = conn->dd_data;
3250         qla_conn->qla_ep = ep->dd_data;
3251         iscsi_put_endpoint(ep);
3252         return 0;
3253 }
3254
3255 static int qla4xxx_conn_start(struct iscsi_cls_conn *cls_conn)
3256 {
3257         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
3258         struct iscsi_session *sess;
3259         struct ddb_entry *ddb_entry;
3260         struct scsi_qla_host *ha;
3261         struct dev_db_entry *fw_ddb_entry = NULL;
3262         dma_addr_t fw_ddb_entry_dma;
3263         uint32_t mbx_sts = 0;
3264         int ret = 0;
3265         int status = QLA_SUCCESS;
3266
3267         sess = cls_sess->dd_data;
3268         ddb_entry = sess->dd_data;
3269         ha = ddb_entry->ha;
3270         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: sid = %d, cid = %d\n", __func__,
3271                           cls_sess->sid, cls_conn->cid));
3272
3273         /* Check if we have  matching FW DDB, if yes then do not
3274          * login to this target. This could cause target to logout previous
3275          * connection
3276          */
3277         ret = qla4xxx_match_fwdb_session(ha, cls_conn);
3278         if (ret == QLA_SUCCESS) {
3279                 ql4_printk(KERN_INFO, ha,
3280                            "Session already exist in FW.\n");
3281                 ret = -EEXIST;
3282                 goto exit_conn_start;
3283         }
3284
3285         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3286                                           &fw_ddb_entry_dma, GFP_KERNEL);
3287         if (!fw_ddb_entry) {
3288                 ql4_printk(KERN_ERR, ha,
3289                            "%s: Unable to allocate dma buffer\n", __func__);
3290                 ret = -ENOMEM;
3291                 goto exit_conn_start;
3292         }
3293
3294         ret = qla4xxx_set_param_ddbentry(ha, ddb_entry, cls_conn, &mbx_sts);
3295         if (ret) {
3296                 /* If iscsid is stopped and started then no need to do
3297                 * set param again since ddb state will be already
3298                 * active and FW does not allow set ddb to an
3299                 * active session.
3300                 */
3301                 if (mbx_sts)
3302                         if (ddb_entry->fw_ddb_device_state ==
3303                                                 DDB_DS_SESSION_ACTIVE) {
3304                                 ddb_entry->unblock_sess(ddb_entry->sess);
3305                                 goto exit_set_param;
3306                         }
3307
3308                 ql4_printk(KERN_ERR, ha, "%s: Failed set param for index[%d]\n",
3309                            __func__, ddb_entry->fw_ddb_index);
3310                 goto exit_conn_start;
3311         }
3312
3313         status = qla4xxx_conn_open(ha, ddb_entry->fw_ddb_index);
3314         if (status == QLA_ERROR) {
3315                 ql4_printk(KERN_ERR, ha, "%s: Login failed: %s\n", __func__,
3316                            sess->targetname);
3317                 ret = -EINVAL;
3318                 goto exit_conn_start;
3319         }
3320
3321         if (ddb_entry->fw_ddb_device_state == DDB_DS_NO_CONNECTION_ACTIVE)
3322                 ddb_entry->fw_ddb_device_state = DDB_DS_LOGIN_IN_PROCESS;
3323
3324         DEBUG2(printk(KERN_INFO "%s: DDB state [%d]\n", __func__,
3325                       ddb_entry->fw_ddb_device_state));
3326
3327 exit_set_param:
3328         ret = 0;
3329
3330 exit_conn_start:
3331         if (fw_ddb_entry)
3332                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3333                                   fw_ddb_entry, fw_ddb_entry_dma);
3334         return ret;
3335 }
3336
3337 static void qla4xxx_conn_destroy(struct iscsi_cls_conn *cls_conn)
3338 {
3339         struct iscsi_cls_session *cls_sess = iscsi_conn_to_session(cls_conn);
3340         struct iscsi_session *sess;
3341         struct scsi_qla_host *ha;
3342         struct ddb_entry *ddb_entry;
3343         int options;
3344
3345         sess = cls_sess->dd_data;
3346         ddb_entry = sess->dd_data;
3347         ha = ddb_entry->ha;
3348         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: cid = %d\n", __func__,
3349                           cls_conn->cid));
3350
3351         options = LOGOUT_OPTION_CLOSE_SESSION;
3352         if (qla4xxx_session_logout_ddb(ha, ddb_entry, options) == QLA_ERROR)
3353                 ql4_printk(KERN_ERR, ha, "%s: Logout failed\n", __func__);
3354 }
3355
3356 static void qla4xxx_task_work(struct work_struct *wdata)
3357 {
3358         struct ql4_task_data *task_data;
3359         struct scsi_qla_host *ha;
3360         struct passthru_status *sts;
3361         struct iscsi_task *task;
3362         struct iscsi_hdr *hdr;
3363         uint8_t *data;
3364         uint32_t data_len;
3365         struct iscsi_conn *conn;
3366         int hdr_len;
3367         itt_t itt;
3368
3369         task_data = container_of(wdata, struct ql4_task_data, task_work);
3370         ha = task_data->ha;
3371         task = task_data->task;
3372         sts = &task_data->sts;
3373         hdr_len = sizeof(struct iscsi_hdr);
3374
3375         DEBUG3(printk(KERN_INFO "Status returned\n"));
3376         DEBUG3(qla4xxx_dump_buffer(sts, 64));
3377         DEBUG3(printk(KERN_INFO "Response buffer"));
3378         DEBUG3(qla4xxx_dump_buffer(task_data->resp_buffer, 64));
3379
3380         conn = task->conn;
3381
3382         switch (sts->completionStatus) {
3383         case PASSTHRU_STATUS_COMPLETE:
3384                 hdr = (struct iscsi_hdr *)task_data->resp_buffer;
3385                 /* Assign back the itt in hdr, until we use the PREASSIGN_TAG */
3386                 itt = sts->handle;
3387                 hdr->itt = itt;
3388                 data = task_data->resp_buffer + hdr_len;
3389                 data_len = task_data->resp_len - hdr_len;
3390                 iscsi_complete_pdu(conn, hdr, data, data_len);
3391                 break;
3392         default:
3393                 ql4_printk(KERN_ERR, ha, "Passthru failed status = 0x%x\n",
3394                            sts->completionStatus);
3395                 break;
3396         }
3397         return;
3398 }
3399
3400 static int qla4xxx_alloc_pdu(struct iscsi_task *task, uint8_t opcode)
3401 {
3402         struct ql4_task_data *task_data;
3403         struct iscsi_session *sess;
3404         struct ddb_entry *ddb_entry;
3405         struct scsi_qla_host *ha;
3406         int hdr_len;
3407
3408         sess = task->conn->session;
3409         ddb_entry = sess->dd_data;
3410         ha = ddb_entry->ha;
3411         task_data = task->dd_data;
3412         memset(task_data, 0, sizeof(struct ql4_task_data));
3413
3414         if (task->sc) {
3415                 ql4_printk(KERN_INFO, ha,
3416                            "%s: SCSI Commands not implemented\n", __func__);
3417                 return -EINVAL;
3418         }
3419
3420         hdr_len = sizeof(struct iscsi_hdr);
3421         task_data->ha = ha;
3422         task_data->task = task;
3423
3424         if (task->data_count) {
3425                 task_data->data_dma = dma_map_single(&ha->pdev->dev, task->data,
3426                                                      task->data_count,
3427                                                      DMA_TO_DEVICE);
3428         }
3429
3430         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
3431                       __func__, task->conn->max_recv_dlength, hdr_len));
3432
3433         task_data->resp_len = task->conn->max_recv_dlength + hdr_len;
3434         task_data->resp_buffer = dma_alloc_coherent(&ha->pdev->dev,
3435                                                     task_data->resp_len,
3436                                                     &task_data->resp_dma,
3437                                                     GFP_ATOMIC);
3438         if (!task_data->resp_buffer)
3439                 goto exit_alloc_pdu;
3440
3441         task_data->req_len = task->data_count + hdr_len;
3442         task_data->req_buffer = dma_alloc_coherent(&ha->pdev->dev,
3443                                                    task_data->req_len,
3444                                                    &task_data->req_dma,
3445                                                    GFP_ATOMIC);
3446         if (!task_data->req_buffer)
3447                 goto exit_alloc_pdu;
3448
3449         task->hdr = task_data->req_buffer;
3450
3451         INIT_WORK(&task_data->task_work, qla4xxx_task_work);
3452
3453         return 0;
3454
3455 exit_alloc_pdu:
3456         if (task_data->resp_buffer)
3457                 dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
3458                                   task_data->resp_buffer, task_data->resp_dma);
3459
3460         if (task_data->req_buffer)
3461                 dma_free_coherent(&ha->pdev->dev, task_data->req_len,
3462                                   task_data->req_buffer, task_data->req_dma);
3463         return -ENOMEM;
3464 }
3465
3466 static void qla4xxx_task_cleanup(struct iscsi_task *task)
3467 {
3468         struct ql4_task_data *task_data;
3469         struct iscsi_session *sess;
3470         struct ddb_entry *ddb_entry;
3471         struct scsi_qla_host *ha;
3472         int hdr_len;
3473
3474         hdr_len = sizeof(struct iscsi_hdr);
3475         sess = task->conn->session;
3476         ddb_entry = sess->dd_data;
3477         ha = ddb_entry->ha;
3478         task_data = task->dd_data;
3479
3480         if (task->data_count) {
3481                 dma_unmap_single(&ha->pdev->dev, task_data->data_dma,
3482                                  task->data_count, DMA_TO_DEVICE);
3483         }
3484
3485         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: MaxRecvLen %u, iscsi hrd %d\n",
3486                       __func__, task->conn->max_recv_dlength, hdr_len));
3487
3488         dma_free_coherent(&ha->pdev->dev, task_data->resp_len,
3489                           task_data->resp_buffer, task_data->resp_dma);
3490         dma_free_coherent(&ha->pdev->dev, task_data->req_len,
3491                           task_data->req_buffer, task_data->req_dma);
3492         return;
3493 }
3494
3495 static int qla4xxx_task_xmit(struct iscsi_task *task)
3496 {
3497         struct scsi_cmnd *sc = task->sc;
3498         struct iscsi_session *sess = task->conn->session;
3499         struct ddb_entry *ddb_entry = sess->dd_data;
3500         struct scsi_qla_host *ha = ddb_entry->ha;
3501
3502         if (!sc)
3503                 return qla4xxx_send_passthru0(task);
3504
3505         ql4_printk(KERN_INFO, ha, "%s: scsi cmd xmit not implemented\n",
3506                    __func__);
3507         return -ENOSYS;
3508 }
3509
3510 static int qla4xxx_copy_from_fwddb_param(struct iscsi_bus_flash_session *sess,
3511                                          struct iscsi_bus_flash_conn *conn,
3512                                          struct dev_db_entry *fw_ddb_entry)
3513 {
3514         unsigned long options = 0;
3515         int rc = 0;
3516
3517         options = le16_to_cpu(fw_ddb_entry->options);
3518         conn->is_fw_assigned_ipv6 = test_bit(OPT_IS_FW_ASSIGNED_IPV6, &options);
3519         if (test_bit(OPT_IPV6_DEVICE, &options)) {
3520                 rc = iscsi_switch_str_param(&sess->portal_type,
3521                                             PORTAL_TYPE_IPV6);
3522                 if (rc)
3523                         goto exit_copy;
3524         } else {
3525                 rc = iscsi_switch_str_param(&sess->portal_type,
3526                                             PORTAL_TYPE_IPV4);
3527                 if (rc)
3528                         goto exit_copy;
3529         }
3530
3531         sess->auto_snd_tgt_disable = test_bit(OPT_AUTO_SENDTGTS_DISABLE,
3532                                               &options);
3533         sess->discovery_sess = test_bit(OPT_DISC_SESSION, &options);
3534         sess->entry_state = test_bit(OPT_ENTRY_STATE, &options);
3535
3536         options = le16_to_cpu(fw_ddb_entry->iscsi_options);
3537         conn->hdrdgst_en = test_bit(ISCSIOPT_HEADER_DIGEST_EN, &options);
3538         conn->datadgst_en = test_bit(ISCSIOPT_DATA_DIGEST_EN, &options);
3539         sess->imm_data_en = test_bit(ISCSIOPT_IMMEDIATE_DATA_EN, &options);
3540         sess->initial_r2t_en = test_bit(ISCSIOPT_INITIAL_R2T_EN, &options);
3541         sess->dataseq_inorder_en = test_bit(ISCSIOPT_DATA_SEQ_IN_ORDER,
3542                                             &options);
3543         sess->pdu_inorder_en = test_bit(ISCSIOPT_DATA_PDU_IN_ORDER, &options);
3544         sess->chap_auth_en = test_bit(ISCSIOPT_CHAP_AUTH_EN, &options);
3545         conn->snack_req_en = test_bit(ISCSIOPT_SNACK_REQ_EN, &options);
3546         sess->discovery_logout_en = test_bit(ISCSIOPT_DISCOVERY_LOGOUT_EN,
3547                                              &options);
3548         sess->bidi_chap_en = test_bit(ISCSIOPT_BIDI_CHAP_EN, &options);
3549         sess->discovery_auth_optional =
3550                         test_bit(ISCSIOPT_DISCOVERY_AUTH_OPTIONAL, &options);
3551         if (test_bit(ISCSIOPT_ERL1, &options))
3552                 sess->erl |= BIT_1;
3553         if (test_bit(ISCSIOPT_ERL0, &options))
3554                 sess->erl |= BIT_0;
3555
3556         options = le16_to_cpu(fw_ddb_entry->tcp_options);
3557         conn->tcp_timestamp_stat = test_bit(TCPOPT_TIMESTAMP_STAT, &options);
3558         conn->tcp_nagle_disable = test_bit(TCPOPT_NAGLE_DISABLE, &options);
3559         conn->tcp_wsf_disable = test_bit(TCPOPT_WSF_DISABLE, &options);
3560         if (test_bit(TCPOPT_TIMER_SCALE3, &options))
3561                 conn->tcp_timer_scale |= BIT_3;
3562         if (test_bit(TCPOPT_TIMER_SCALE2, &options))
3563                 conn->tcp_timer_scale |= BIT_2;
3564         if (test_bit(TCPOPT_TIMER_SCALE1, &options))
3565                 conn->tcp_timer_scale |= BIT_1;
3566
3567         conn->tcp_timer_scale >>= 1;
3568         conn->tcp_timestamp_en = test_bit(TCPOPT_TIMESTAMP_EN, &options);
3569
3570         options = le16_to_cpu(fw_ddb_entry->ip_options);
3571         conn->fragment_disable = test_bit(IPOPT_FRAGMENT_DISABLE, &options);
3572
3573         conn->max_recv_dlength = BYTE_UNITS *
3574                           le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
3575         conn->max_xmit_dlength = BYTE_UNITS *
3576                           le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
3577         sess->first_burst = BYTE_UNITS *
3578                                le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
3579         sess->max_burst = BYTE_UNITS *
3580                                  le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
3581         sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
3582         sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
3583         sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
3584         sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
3585         conn->max_segment_size = le16_to_cpu(fw_ddb_entry->mss);
3586         conn->tcp_xmit_wsf = fw_ddb_entry->tcp_xmt_wsf;
3587         conn->tcp_recv_wsf = fw_ddb_entry->tcp_rcv_wsf;
3588         conn->ipv6_flow_label = le16_to_cpu(fw_ddb_entry->ipv6_flow_lbl);
3589         conn->keepalive_timeout = le16_to_cpu(fw_ddb_entry->ka_timeout);
3590         conn->local_port = le16_to_cpu(fw_ddb_entry->lcl_port);
3591         conn->statsn = le32_to_cpu(fw_ddb_entry->stat_sn);
3592         conn->exp_statsn = le32_to_cpu(fw_ddb_entry->exp_stat_sn);
3593         sess->discovery_parent_idx = le16_to_cpu(fw_ddb_entry->ddb_link);
3594         sess->discovery_parent_type = le16_to_cpu(fw_ddb_entry->ddb_link);
3595         sess->chap_out_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
3596         sess->tsid = le16_to_cpu(fw_ddb_entry->tsid);
3597
3598         sess->default_taskmgmt_timeout =
3599                                 le16_to_cpu(fw_ddb_entry->def_timeout);
3600         conn->port = le16_to_cpu(fw_ddb_entry->port);
3601
3602         options = le16_to_cpu(fw_ddb_entry->options);
3603         conn->ipaddress = kzalloc(IPv6_ADDR_LEN, GFP_KERNEL);
3604         if (!conn->ipaddress) {
3605                 rc = -ENOMEM;
3606                 goto exit_copy;
3607         }
3608
3609         conn->redirect_ipaddr = kzalloc(IPv6_ADDR_LEN, GFP_KERNEL);
3610         if (!conn->redirect_ipaddr) {
3611                 rc = -ENOMEM;
3612                 goto exit_copy;
3613         }
3614
3615         memcpy(conn->ipaddress, fw_ddb_entry->ip_addr, IPv6_ADDR_LEN);
3616         memcpy(conn->redirect_ipaddr, fw_ddb_entry->tgt_addr, IPv6_ADDR_LEN);
3617
3618         if (test_bit(OPT_IPV6_DEVICE, &options)) {
3619                 conn->ipv6_traffic_class = fw_ddb_entry->ipv4_tos;
3620
3621                 conn->link_local_ipv6_addr = kmemdup(
3622                                         fw_ddb_entry->link_local_ipv6_addr,
3623                                         IPv6_ADDR_LEN, GFP_KERNEL);
3624                 if (!conn->link_local_ipv6_addr) {
3625                         rc = -ENOMEM;
3626                         goto exit_copy;
3627                 }
3628         } else {
3629                 conn->ipv4_tos = fw_ddb_entry->ipv4_tos;
3630         }
3631
3632         if (fw_ddb_entry->iscsi_name[0]) {
3633                 rc = iscsi_switch_str_param(&sess->targetname,
3634                                             (char *)fw_ddb_entry->iscsi_name);
3635                 if (rc)
3636                         goto exit_copy;
3637         }
3638
3639         if (fw_ddb_entry->iscsi_alias[0]) {
3640                 rc = iscsi_switch_str_param(&sess->targetalias,
3641                                             (char *)fw_ddb_entry->iscsi_alias);
3642                 if (rc)
3643                         goto exit_copy;
3644         }
3645
3646         COPY_ISID(sess->isid, fw_ddb_entry->isid);
3647
3648 exit_copy:
3649         return rc;
3650 }
3651
3652 static int qla4xxx_copy_to_fwddb_param(struct iscsi_bus_flash_session *sess,
3653                                        struct iscsi_bus_flash_conn *conn,
3654                                        struct dev_db_entry *fw_ddb_entry)
3655 {
3656         uint16_t options;
3657         int rc = 0;
3658
3659         options = le16_to_cpu(fw_ddb_entry->options);
3660         SET_BITVAL(conn->is_fw_assigned_ipv6,  options, BIT_11);
3661         if (!strncmp(sess->portal_type, PORTAL_TYPE_IPV6, 4))
3662                 options |= BIT_8;
3663         else
3664                 options &= ~BIT_8;
3665
3666         SET_BITVAL(sess->auto_snd_tgt_disable, options, BIT_6);
3667         SET_BITVAL(sess->discovery_sess, options, BIT_4);
3668         SET_BITVAL(sess->entry_state, options, BIT_3);
3669         fw_ddb_entry->options = cpu_to_le16(options);
3670
3671         options = le16_to_cpu(fw_ddb_entry->iscsi_options);
3672         SET_BITVAL(conn->hdrdgst_en, options, BIT_13);
3673         SET_BITVAL(conn->datadgst_en, options, BIT_12);
3674         SET_BITVAL(sess->imm_data_en, options, BIT_11);
3675         SET_BITVAL(sess->initial_r2t_en, options, BIT_10);
3676         SET_BITVAL(sess->dataseq_inorder_en, options, BIT_9);
3677         SET_BITVAL(sess->pdu_inorder_en, options, BIT_8);
3678         SET_BITVAL(sess->chap_auth_en, options, BIT_7);
3679         SET_BITVAL(conn->snack_req_en, options, BIT_6);
3680         SET_BITVAL(sess->discovery_logout_en, options, BIT_5);
3681         SET_BITVAL(sess->bidi_chap_en, options, BIT_4);
3682         SET_BITVAL(sess->discovery_auth_optional, options, BIT_3);
3683         SET_BITVAL(sess->erl & BIT_1, options, BIT_1);
3684         SET_BITVAL(sess->erl & BIT_0, options, BIT_0);
3685         fw_ddb_entry->iscsi_options = cpu_to_le16(options);
3686
3687         options = le16_to_cpu(fw_ddb_entry->tcp_options);
3688         SET_BITVAL(conn->tcp_timestamp_stat, options, BIT_6);
3689         SET_BITVAL(conn->tcp_nagle_disable, options, BIT_5);
3690         SET_BITVAL(conn->tcp_wsf_disable, options, BIT_4);
3691         SET_BITVAL(conn->tcp_timer_scale & BIT_2, options, BIT_3);
3692         SET_BITVAL(conn->tcp_timer_scale & BIT_1, options, BIT_2);
3693         SET_BITVAL(conn->tcp_timer_scale & BIT_0, options, BIT_1);
3694         SET_BITVAL(conn->tcp_timestamp_en, options, BIT_0);
3695         fw_ddb_entry->tcp_options = cpu_to_le16(options);
3696
3697         options = le16_to_cpu(fw_ddb_entry->ip_options);
3698         SET_BITVAL(conn->fragment_disable, options, BIT_4);
3699         fw_ddb_entry->ip_options = cpu_to_le16(options);
3700
3701         fw_ddb_entry->iscsi_max_outsnd_r2t = cpu_to_le16(sess->max_r2t);
3702         fw_ddb_entry->iscsi_max_rcv_data_seg_len =
3703                                cpu_to_le16(conn->max_recv_dlength / BYTE_UNITS);
3704         fw_ddb_entry->iscsi_max_snd_data_seg_len =
3705                                cpu_to_le16(conn->max_xmit_dlength / BYTE_UNITS);
3706         fw_ddb_entry->iscsi_first_burst_len =
3707                                 cpu_to_le16(sess->first_burst / BYTE_UNITS);
3708         fw_ddb_entry->iscsi_max_burst_len = cpu_to_le16(sess->max_burst /
3709                                             BYTE_UNITS);
3710         fw_ddb_entry->iscsi_def_time2wait = cpu_to_le16(sess->time2wait);
3711         fw_ddb_entry->iscsi_def_time2retain = cpu_to_le16(sess->time2retain);
3712         fw_ddb_entry->tgt_portal_grp = cpu_to_le16(sess->tpgt);
3713         fw_ddb_entry->mss = cpu_to_le16(conn->max_segment_size);
3714         fw_ddb_entry->tcp_xmt_wsf = (uint8_t) cpu_to_le32(conn->tcp_xmit_wsf);
3715         fw_ddb_entry->tcp_rcv_wsf = (uint8_t) cpu_to_le32(conn->tcp_recv_wsf);
3716         fw_ddb_entry->ipv6_flow_lbl = cpu_to_le16(conn->ipv6_flow_label);
3717         fw_ddb_entry->ka_timeout = cpu_to_le16(conn->keepalive_timeout);
3718         fw_ddb_entry->lcl_port = cpu_to_le16(conn->local_port);
3719         fw_ddb_entry->stat_sn = cpu_to_le32(conn->statsn);
3720         fw_ddb_entry->exp_stat_sn = cpu_to_le32(conn->exp_statsn);
3721         fw_ddb_entry->ddb_link = cpu_to_le16(sess->discovery_parent_idx);
3722         fw_ddb_entry->chap_tbl_idx = cpu_to_le16(sess->chap_out_idx);
3723         fw_ddb_entry->tsid = cpu_to_le16(sess->tsid);
3724         fw_ddb_entry->port = cpu_to_le16(conn->port);
3725         fw_ddb_entry->def_timeout =
3726                                 cpu_to_le16(sess->default_taskmgmt_timeout);
3727
3728         if (!strncmp(sess->portal_type, PORTAL_TYPE_IPV6, 4))
3729                 fw_ddb_entry->ipv4_tos = conn->ipv6_traffic_class;
3730         else
3731                 fw_ddb_entry->ipv4_tos = conn->ipv4_tos;
3732
3733         if (conn->ipaddress)
3734                 memcpy(fw_ddb_entry->ip_addr, conn->ipaddress,
3735                        sizeof(fw_ddb_entry->ip_addr));
3736
3737         if (conn->redirect_ipaddr)
3738                 memcpy(fw_ddb_entry->tgt_addr, conn->redirect_ipaddr,
3739                        sizeof(fw_ddb_entry->tgt_addr));
3740
3741         if (conn->link_local_ipv6_addr)
3742                 memcpy(fw_ddb_entry->link_local_ipv6_addr,
3743                        conn->link_local_ipv6_addr,
3744                        sizeof(fw_ddb_entry->link_local_ipv6_addr));
3745
3746         if (sess->targetname)
3747                 memcpy(fw_ddb_entry->iscsi_name, sess->targetname,
3748                        sizeof(fw_ddb_entry->iscsi_name));
3749
3750         if (sess->targetalias)
3751                 memcpy(fw_ddb_entry->iscsi_alias, sess->targetalias,
3752                        sizeof(fw_ddb_entry->iscsi_alias));
3753
3754         COPY_ISID(fw_ddb_entry->isid, sess->isid);
3755
3756         return rc;
3757 }
3758
3759 static void qla4xxx_copy_to_sess_conn_params(struct iscsi_conn *conn,
3760                                              struct iscsi_session *sess,
3761                                              struct dev_db_entry *fw_ddb_entry)
3762 {
3763         unsigned long options = 0;
3764         uint16_t ddb_link;
3765         uint16_t disc_parent;
3766         char ip_addr[DDB_IPADDR_LEN];
3767
3768         options = le16_to_cpu(fw_ddb_entry->options);
3769         conn->is_fw_assigned_ipv6 = test_bit(OPT_IS_FW_ASSIGNED_IPV6, &options);
3770         sess->auto_snd_tgt_disable = test_bit(OPT_AUTO_SENDTGTS_DISABLE,
3771                                               &options);
3772         sess->discovery_sess = test_bit(OPT_DISC_SESSION, &options);
3773
3774         options = le16_to_cpu(fw_ddb_entry->iscsi_options);
3775         conn->hdrdgst_en = test_bit(ISCSIOPT_HEADER_DIGEST_EN, &options);
3776         conn->datadgst_en = test_bit(ISCSIOPT_DATA_DIGEST_EN, &options);
3777         sess->imm_data_en = test_bit(ISCSIOPT_IMMEDIATE_DATA_EN, &options);
3778         sess->initial_r2t_en = test_bit(ISCSIOPT_INITIAL_R2T_EN, &options);
3779         sess->dataseq_inorder_en = test_bit(ISCSIOPT_DATA_SEQ_IN_ORDER,
3780                                             &options);
3781         sess->pdu_inorder_en = test_bit(ISCSIOPT_DATA_PDU_IN_ORDER, &options);
3782         sess->chap_auth_en = test_bit(ISCSIOPT_CHAP_AUTH_EN, &options);
3783         sess->discovery_logout_en = test_bit(ISCSIOPT_DISCOVERY_LOGOUT_EN,
3784                                              &options);
3785         sess->bidi_chap_en = test_bit(ISCSIOPT_BIDI_CHAP_EN, &options);
3786         sess->discovery_auth_optional =
3787                         test_bit(ISCSIOPT_DISCOVERY_AUTH_OPTIONAL, &options);
3788         if (test_bit(ISCSIOPT_ERL1, &options))
3789                 sess->erl |= BIT_1;
3790         if (test_bit(ISCSIOPT_ERL0, &options))
3791                 sess->erl |= BIT_0;
3792
3793         options = le16_to_cpu(fw_ddb_entry->tcp_options);
3794         conn->tcp_timestamp_stat = test_bit(TCPOPT_TIMESTAMP_STAT, &options);
3795         conn->tcp_nagle_disable = test_bit(TCPOPT_NAGLE_DISABLE, &options);
3796         conn->tcp_wsf_disable = test_bit(TCPOPT_WSF_DISABLE, &options);
3797         if (test_bit(TCPOPT_TIMER_SCALE3, &options))
3798                 conn->tcp_timer_scale |= BIT_3;
3799         if (test_bit(TCPOPT_TIMER_SCALE2, &options))
3800                 conn->tcp_timer_scale |= BIT_2;
3801         if (test_bit(TCPOPT_TIMER_SCALE1, &options))
3802                 conn->tcp_timer_scale |= BIT_1;
3803
3804         conn->tcp_timer_scale >>= 1;
3805         conn->tcp_timestamp_en = test_bit(TCPOPT_TIMESTAMP_EN, &options);
3806
3807         options = le16_to_cpu(fw_ddb_entry->ip_options);
3808         conn->fragment_disable = test_bit(IPOPT_FRAGMENT_DISABLE, &options);
3809
3810         conn->max_recv_dlength = BYTE_UNITS *
3811                           le16_to_cpu(fw_ddb_entry->iscsi_max_rcv_data_seg_len);
3812         conn->max_xmit_dlength = BYTE_UNITS *
3813                           le16_to_cpu(fw_ddb_entry->iscsi_max_snd_data_seg_len);
3814         sess->max_r2t = le16_to_cpu(fw_ddb_entry->iscsi_max_outsnd_r2t);
3815         sess->first_burst = BYTE_UNITS *
3816                                le16_to_cpu(fw_ddb_entry->iscsi_first_burst_len);
3817         sess->max_burst = BYTE_UNITS *
3818                                  le16_to_cpu(fw_ddb_entry->iscsi_max_burst_len);
3819         sess->time2wait = le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
3820         sess->time2retain = le16_to_cpu(fw_ddb_entry->iscsi_def_time2retain);
3821         sess->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
3822         conn->max_segment_size = le16_to_cpu(fw_ddb_entry->mss);
3823         conn->tcp_xmit_wsf = fw_ddb_entry->tcp_xmt_wsf;
3824         conn->tcp_recv_wsf = fw_ddb_entry->tcp_rcv_wsf;
3825         conn->ipv4_tos = fw_ddb_entry->ipv4_tos;
3826         conn->keepalive_tmo = le16_to_cpu(fw_ddb_entry->ka_timeout);
3827         conn->local_port = le16_to_cpu(fw_ddb_entry->lcl_port);
3828         conn->statsn = le32_to_cpu(fw_ddb_entry->stat_sn);
3829         conn->exp_statsn = le32_to_cpu(fw_ddb_entry->exp_stat_sn);
3830         sess->tsid = le16_to_cpu(fw_ddb_entry->tsid);
3831         COPY_ISID(sess->isid, fw_ddb_entry->isid);
3832
3833         ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
3834         if (ddb_link == DDB_ISNS)
3835                 disc_parent = ISCSI_DISC_PARENT_ISNS;
3836         else if (ddb_link == DDB_NO_LINK)
3837                 disc_parent = ISCSI_DISC_PARENT_UNKNOWN;
3838         else if (ddb_link < MAX_DDB_ENTRIES)
3839                 disc_parent = ISCSI_DISC_PARENT_SENDTGT;
3840         else
3841                 disc_parent = ISCSI_DISC_PARENT_UNKNOWN;
3842
3843         iscsi_set_param(conn->cls_conn, ISCSI_PARAM_DISCOVERY_PARENT_TYPE,
3844                         iscsi_get_discovery_parent_name(disc_parent), 0);
3845
3846         iscsi_set_param(conn->cls_conn, ISCSI_PARAM_TARGET_ALIAS,
3847                         (char *)fw_ddb_entry->iscsi_alias, 0);
3848
3849         options = le16_to_cpu(fw_ddb_entry->options);
3850         if (options & DDB_OPT_IPV6_DEVICE) {
3851                 memset(ip_addr, 0, sizeof(ip_addr));
3852                 sprintf(ip_addr, "%pI6", fw_ddb_entry->link_local_ipv6_addr);
3853                 iscsi_set_param(conn->cls_conn, ISCSI_PARAM_LOCAL_IPADDR,
3854                                 (char *)ip_addr, 0);
3855         }
3856 }
3857
3858 static void qla4xxx_copy_fwddb_param(struct scsi_qla_host *ha,
3859                                      struct dev_db_entry *fw_ddb_entry,
3860                                      struct iscsi_cls_session *cls_sess,
3861                                      struct iscsi_cls_conn *cls_conn)
3862 {
3863         int buflen = 0;
3864         struct iscsi_session *sess;
3865         struct ddb_entry *ddb_entry;
3866         struct ql4_chap_table chap_tbl;
3867         struct iscsi_conn *conn;
3868         char ip_addr[DDB_IPADDR_LEN];
3869         uint16_t options = 0;
3870
3871         sess = cls_sess->dd_data;
3872         ddb_entry = sess->dd_data;
3873         conn = cls_conn->dd_data;
3874         memset(&chap_tbl, 0, sizeof(chap_tbl));
3875
3876         ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
3877
3878         qla4xxx_copy_to_sess_conn_params(conn, sess, fw_ddb_entry);
3879
3880         sess->def_taskmgmt_tmo = le16_to_cpu(fw_ddb_entry->def_timeout);
3881         conn->persistent_port = le16_to_cpu(fw_ddb_entry->port);
3882
3883         memset(ip_addr, 0, sizeof(ip_addr));
3884         options = le16_to_cpu(fw_ddb_entry->options);
3885         if (options & DDB_OPT_IPV6_DEVICE) {
3886                 iscsi_set_param(cls_conn, ISCSI_PARAM_PORTAL_TYPE, "ipv6", 4);
3887
3888                 memset(ip_addr, 0, sizeof(ip_addr));
3889                 sprintf(ip_addr, "%pI6", fw_ddb_entry->ip_addr);
3890         } else {
3891                 iscsi_set_param(cls_conn, ISCSI_PARAM_PORTAL_TYPE, "ipv4", 4);
3892                 sprintf(ip_addr, "%pI4", fw_ddb_entry->ip_addr);
3893         }
3894
3895         iscsi_set_param(cls_conn, ISCSI_PARAM_PERSISTENT_ADDRESS,
3896                         (char *)ip_addr, buflen);
3897         iscsi_set_param(cls_conn, ISCSI_PARAM_TARGET_NAME,
3898                         (char *)fw_ddb_entry->iscsi_name, buflen);
3899         iscsi_set_param(cls_conn, ISCSI_PARAM_INITIATOR_NAME,
3900                         (char *)ha->name_string, buflen);
3901
3902         if (ddb_entry->chap_tbl_idx != INVALID_ENTRY) {
3903                 if (!qla4xxx_get_uni_chap_at_index(ha, chap_tbl.name,
3904                                                    chap_tbl.secret,
3905                                                    ddb_entry->chap_tbl_idx)) {
3906                         iscsi_set_param(cls_conn, ISCSI_PARAM_USERNAME,
3907                                         (char *)chap_tbl.name,
3908                                         strlen((char *)chap_tbl.name));
3909                         iscsi_set_param(cls_conn, ISCSI_PARAM_PASSWORD,
3910                                         (char *)chap_tbl.secret,
3911                                         chap_tbl.secret_len);
3912                 }
3913         }
3914 }
3915
3916 void qla4xxx_update_session_conn_fwddb_param(struct scsi_qla_host *ha,
3917                                              struct ddb_entry *ddb_entry)
3918 {
3919         struct iscsi_cls_session *cls_sess;
3920         struct iscsi_cls_conn *cls_conn;
3921         uint32_t ddb_state;
3922         dma_addr_t fw_ddb_entry_dma;
3923         struct dev_db_entry *fw_ddb_entry;
3924
3925         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3926                                           &fw_ddb_entry_dma, GFP_KERNEL);
3927         if (!fw_ddb_entry) {
3928                 ql4_printk(KERN_ERR, ha,
3929                            "%s: Unable to allocate dma buffer\n", __func__);
3930                 goto exit_session_conn_fwddb_param;
3931         }
3932
3933         if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
3934                                     fw_ddb_entry_dma, NULL, NULL, &ddb_state,
3935                                     NULL, NULL, NULL) == QLA_ERROR) {
3936                 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
3937                                   "get_ddb_entry for fw_ddb_index %d\n",
3938                                   ha->host_no, __func__,
3939                                   ddb_entry->fw_ddb_index));
3940                 goto exit_session_conn_fwddb_param;
3941         }
3942
3943         cls_sess = ddb_entry->sess;
3944
3945         cls_conn = ddb_entry->conn;
3946
3947         /* Update params */
3948         qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
3949
3950 exit_session_conn_fwddb_param:
3951         if (fw_ddb_entry)
3952                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3953                                   fw_ddb_entry, fw_ddb_entry_dma);
3954 }
3955
3956 void qla4xxx_update_session_conn_param(struct scsi_qla_host *ha,
3957                                        struct ddb_entry *ddb_entry)
3958 {
3959         struct iscsi_cls_session *cls_sess;
3960         struct iscsi_cls_conn *cls_conn;
3961         struct iscsi_session *sess;
3962         struct iscsi_conn *conn;
3963         uint32_t ddb_state;
3964         dma_addr_t fw_ddb_entry_dma;
3965         struct dev_db_entry *fw_ddb_entry;
3966
3967         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
3968                                           &fw_ddb_entry_dma, GFP_KERNEL);
3969         if (!fw_ddb_entry) {
3970                 ql4_printk(KERN_ERR, ha,
3971                            "%s: Unable to allocate dma buffer\n", __func__);
3972                 goto exit_session_conn_param;
3973         }
3974
3975         if (qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index, fw_ddb_entry,
3976                                     fw_ddb_entry_dma, NULL, NULL, &ddb_state,
3977                                     NULL, NULL, NULL) == QLA_ERROR) {
3978                 DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: failed "
3979                                   "get_ddb_entry for fw_ddb_index %d\n",
3980                                   ha->host_no, __func__,
3981                                   ddb_entry->fw_ddb_index));
3982                 goto exit_session_conn_param;
3983         }
3984
3985         cls_sess = ddb_entry->sess;
3986         sess = cls_sess->dd_data;
3987
3988         cls_conn = ddb_entry->conn;
3989         conn = cls_conn->dd_data;
3990
3991         /* Update timers after login */
3992         ddb_entry->default_relogin_timeout =
3993                 (le16_to_cpu(fw_ddb_entry->def_timeout) > LOGIN_TOV) &&
3994                  (le16_to_cpu(fw_ddb_entry->def_timeout) < LOGIN_TOV * 10) ?
3995                  le16_to_cpu(fw_ddb_entry->def_timeout) : LOGIN_TOV;
3996         ddb_entry->default_time2wait =
3997                                 le16_to_cpu(fw_ddb_entry->iscsi_def_time2wait);
3998
3999         /* Update params */
4000         ddb_entry->chap_tbl_idx = le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
4001         qla4xxx_copy_to_sess_conn_params(conn, sess, fw_ddb_entry);
4002
4003         memcpy(sess->initiatorname, ha->name_string,
4004                min(sizeof(ha->name_string), sizeof(sess->initiatorname)));
4005
4006 exit_session_conn_param:
4007         if (fw_ddb_entry)
4008                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
4009                                   fw_ddb_entry, fw_ddb_entry_dma);
4010 }
4011
4012 /*
4013  * Timer routines
4014  */
4015 static void qla4xxx_timer(struct timer_list *t);
4016
4017 static void qla4xxx_start_timer(struct scsi_qla_host *ha,
4018                                 unsigned long interval)
4019 {
4020         DEBUG(printk("scsi: %s: Starting timer thread for adapter %d\n",
4021                      __func__, ha->host->host_no));
4022         timer_setup(&ha->timer, qla4xxx_timer, 0);
4023         ha->timer.expires = jiffies + interval * HZ;
4024         add_timer(&ha->timer);
4025         ha->timer_active = 1;
4026 }
4027
4028 static void qla4xxx_stop_timer(struct scsi_qla_host *ha)
4029 {
4030         del_timer_sync(&ha->timer);
4031         ha->timer_active = 0;
4032 }
4033
4034 /***
4035  * qla4xxx_mark_device_missing - blocks the session
4036  * @cls_session: Pointer to the session to be blocked
4037  * @ddb_entry: Pointer to device database entry
4038  *
4039  * This routine marks a device missing and close connection.
4040  **/
4041 void qla4xxx_mark_device_missing(struct iscsi_cls_session *cls_session)
4042 {
4043         iscsi_block_session(cls_session);
4044 }
4045
4046 /**
4047  * qla4xxx_mark_all_devices_missing - mark all devices as missing.
4048  * @ha: Pointer to host adapter structure.
4049  *
4050  * This routine marks a device missing and resets the relogin retry count.
4051  **/
4052 void qla4xxx_mark_all_devices_missing(struct scsi_qla_host *ha)
4053 {
4054         iscsi_host_for_each_session(ha->host, qla4xxx_mark_device_missing);
4055 }
4056
4057 static struct srb* qla4xxx_get_new_srb(struct scsi_qla_host *ha,
4058                                        struct ddb_entry *ddb_entry,
4059                                        struct scsi_cmnd *cmd)
4060 {
4061         struct srb *srb;
4062
4063         srb = mempool_alloc(ha->srb_mempool, GFP_ATOMIC);
4064         if (!srb)
4065                 return srb;
4066
4067         kref_init(&srb->srb_ref);
4068         srb->ha = ha;
4069         srb->ddb = ddb_entry;
4070         srb->cmd = cmd;
4071         srb->flags = 0;
4072         CMD_SP(cmd) = (void *)srb;
4073
4074         return srb;
4075 }
4076
4077 static void qla4xxx_srb_free_dma(struct scsi_qla_host *ha, struct srb *srb)
4078 {
4079         struct scsi_cmnd *cmd = srb->cmd;
4080
4081         if (srb->flags & SRB_DMA_VALID) {
4082                 scsi_dma_unmap(cmd);
4083                 srb->flags &= ~SRB_DMA_VALID;
4084         }
4085         CMD_SP(cmd) = NULL;
4086 }
4087
4088 void qla4xxx_srb_compl(struct kref *ref)
4089 {
4090         struct srb *srb = container_of(ref, struct srb, srb_ref);
4091         struct scsi_cmnd *cmd = srb->cmd;
4092         struct scsi_qla_host *ha = srb->ha;
4093
4094         qla4xxx_srb_free_dma(ha, srb);
4095
4096         mempool_free(srb, ha->srb_mempool);
4097
4098         cmd->scsi_done(cmd);
4099 }
4100
4101 /**
4102  * qla4xxx_queuecommand - scsi layer issues scsi command to driver.
4103  * @host: scsi host
4104  * @cmd: Pointer to Linux's SCSI command structure
4105  *
4106  * Remarks:
4107  * This routine is invoked by Linux to send a SCSI command to the driver.
4108  * The mid-level driver tries to ensure that queuecommand never gets
4109  * invoked concurrently with itself or the interrupt handler (although
4110  * the interrupt handler may call this routine as part of request-
4111  * completion handling).   Unfortunely, it sometimes calls the scheduler
4112  * in interrupt context which is a big NO! NO!.
4113  **/
4114 static int qla4xxx_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd)
4115 {
4116         struct scsi_qla_host *ha = to_qla_host(host);
4117         struct ddb_entry *ddb_entry = cmd->device->hostdata;
4118         struct iscsi_cls_session *sess = ddb_entry->sess;
4119         struct srb *srb;
4120         int rval;
4121
4122         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
4123                 if (test_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags))
4124                         cmd->result = DID_NO_CONNECT << 16;
4125                 else
4126                         cmd->result = DID_REQUEUE << 16;
4127                 goto qc_fail_command;
4128         }
4129
4130         if (!sess) {
4131                 cmd->result = DID_IMM_RETRY << 16;
4132                 goto qc_fail_command;
4133         }
4134
4135         rval = iscsi_session_chkready(sess);
4136         if (rval) {
4137                 cmd->result = rval;
4138                 goto qc_fail_command;
4139         }
4140
4141         if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
4142             test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
4143             test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
4144             test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
4145             test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
4146             !test_bit(AF_ONLINE, &ha->flags) ||
4147             !test_bit(AF_LINK_UP, &ha->flags) ||
4148             test_bit(AF_LOOPBACK, &ha->flags) ||
4149             test_bit(DPC_POST_IDC_ACK, &ha->dpc_flags) ||
4150             test_bit(DPC_RESTORE_ACB, &ha->dpc_flags) ||
4151             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))
4152                 goto qc_host_busy;
4153
4154         srb = qla4xxx_get_new_srb(ha, ddb_entry, cmd);
4155         if (!srb)
4156                 goto qc_host_busy;
4157
4158         rval = qla4xxx_send_command_to_isp(ha, srb);
4159         if (rval != QLA_SUCCESS)
4160                 goto qc_host_busy_free_sp;
4161
4162         return 0;
4163
4164 qc_host_busy_free_sp:
4165         qla4xxx_srb_free_dma(ha, srb);
4166         mempool_free(srb, ha->srb_mempool);
4167
4168 qc_host_busy:
4169         return SCSI_MLQUEUE_HOST_BUSY;
4170
4171 qc_fail_command:
4172         cmd->scsi_done(cmd);
4173
4174         return 0;
4175 }
4176
4177 /**
4178  * qla4xxx_mem_free - frees memory allocated to adapter
4179  * @ha: Pointer to host adapter structure.
4180  *
4181  * Frees memory previously allocated by qla4xxx_mem_alloc
4182  **/
4183 static void qla4xxx_mem_free(struct scsi_qla_host *ha)
4184 {
4185         if (ha->queues)
4186                 dma_free_coherent(&ha->pdev->dev, ha->queues_len, ha->queues,
4187                                   ha->queues_dma);
4188
4189         if (ha->fw_dump)
4190                 vfree(ha->fw_dump);
4191
4192         ha->queues_len = 0;
4193         ha->queues = NULL;
4194         ha->queues_dma = 0;
4195         ha->request_ring = NULL;
4196         ha->request_dma = 0;
4197         ha->response_ring = NULL;
4198         ha->response_dma = 0;
4199         ha->shadow_regs = NULL;
4200         ha->shadow_regs_dma = 0;
4201         ha->fw_dump = NULL;
4202         ha->fw_dump_size = 0;
4203
4204         /* Free srb pool. */
4205         mempool_destroy(ha->srb_mempool);
4206         ha->srb_mempool = NULL;
4207
4208         dma_pool_destroy(ha->chap_dma_pool);
4209
4210         if (ha->chap_list)
4211                 vfree(ha->chap_list);
4212         ha->chap_list = NULL;
4213
4214         dma_pool_destroy(ha->fw_ddb_dma_pool);
4215
4216         /* release io space registers  */
4217         if (is_qla8022(ha)) {
4218                 if (ha->nx_pcibase)
4219                         iounmap(
4220                             (struct device_reg_82xx __iomem *)ha->nx_pcibase);
4221         } else if (is_qla8032(ha) || is_qla8042(ha)) {
4222                 if (ha->nx_pcibase)
4223                         iounmap(
4224                             (struct device_reg_83xx __iomem *)ha->nx_pcibase);
4225         } else if (ha->reg) {
4226                 iounmap(ha->reg);
4227         }
4228
4229         if (ha->reset_tmplt.buff)
4230                 vfree(ha->reset_tmplt.buff);
4231
4232         pci_release_regions(ha->pdev);
4233 }
4234
4235 /**
4236  * qla4xxx_mem_alloc - allocates memory for use by adapter.
4237  * @ha: Pointer to host adapter structure
4238  *
4239  * Allocates DMA memory for request and response queues. Also allocates memory
4240  * for srbs.
4241  **/
4242 static int qla4xxx_mem_alloc(struct scsi_qla_host *ha)
4243 {
4244         unsigned long align;
4245
4246         /* Allocate contiguous block of DMA memory for queues. */
4247         ha->queues_len = ((REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
4248                           (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE) +
4249                           sizeof(struct shadow_regs) +
4250                           MEM_ALIGN_VALUE +
4251                           (PAGE_SIZE - 1)) & ~(PAGE_SIZE - 1);
4252         ha->queues = dma_alloc_coherent(&ha->pdev->dev, ha->queues_len,
4253                                         &ha->queues_dma, GFP_KERNEL);
4254         if (ha->queues == NULL) {
4255                 ql4_printk(KERN_WARNING, ha,
4256                     "Memory Allocation failed - queues.\n");
4257
4258                 goto mem_alloc_error_exit;
4259         }
4260
4261         /*
4262          * As per RISC alignment requirements -- the bus-address must be a
4263          * multiple of the request-ring size (in bytes).
4264          */
4265         align = 0;
4266         if ((unsigned long)ha->queues_dma & (MEM_ALIGN_VALUE - 1))
4267                 align = MEM_ALIGN_VALUE - ((unsigned long)ha->queues_dma &
4268                                            (MEM_ALIGN_VALUE - 1));
4269
4270         /* Update request and response queue pointers. */
4271         ha->request_dma = ha->queues_dma + align;
4272         ha->request_ring = (struct queue_entry *) (ha->queues + align);
4273         ha->response_dma = ha->queues_dma + align +
4274                 (REQUEST_QUEUE_DEPTH * QUEUE_SIZE);
4275         ha->response_ring = (struct queue_entry *) (ha->queues + align +
4276                                                     (REQUEST_QUEUE_DEPTH *
4277                                                      QUEUE_SIZE));
4278         ha->shadow_regs_dma = ha->queues_dma + align +
4279                 (REQUEST_QUEUE_DEPTH * QUEUE_SIZE) +
4280                 (RESPONSE_QUEUE_DEPTH * QUEUE_SIZE);
4281         ha->shadow_regs = (struct shadow_regs *) (ha->queues + align +
4282                                                   (REQUEST_QUEUE_DEPTH *
4283                                                    QUEUE_SIZE) +
4284                                                   (RESPONSE_QUEUE_DEPTH *
4285                                                    QUEUE_SIZE));
4286
4287         /* Allocate memory for srb pool. */
4288         ha->srb_mempool = mempool_create(SRB_MIN_REQ, mempool_alloc_slab,
4289                                          mempool_free_slab, srb_cachep);
4290         if (ha->srb_mempool == NULL) {
4291                 ql4_printk(KERN_WARNING, ha,
4292                     "Memory Allocation failed - SRB Pool.\n");
4293
4294                 goto mem_alloc_error_exit;
4295         }
4296
4297         ha->chap_dma_pool = dma_pool_create("ql4_chap", &ha->pdev->dev,
4298                                             CHAP_DMA_BLOCK_SIZE, 8, 0);
4299
4300         if (ha->chap_dma_pool == NULL) {
4301                 ql4_printk(KERN_WARNING, ha,
4302                     "%s: chap_dma_pool allocation failed..\n", __func__);
4303                 goto mem_alloc_error_exit;
4304         }
4305
4306         ha->fw_ddb_dma_pool = dma_pool_create("ql4_fw_ddb", &ha->pdev->dev,
4307                                               DDB_DMA_BLOCK_SIZE, 8, 0);
4308
4309         if (ha->fw_ddb_dma_pool == NULL) {
4310                 ql4_printk(KERN_WARNING, ha,
4311                            "%s: fw_ddb_dma_pool allocation failed..\n",
4312                            __func__);
4313                 goto mem_alloc_error_exit;
4314         }
4315
4316         return QLA_SUCCESS;
4317
4318 mem_alloc_error_exit:
4319         return QLA_ERROR;
4320 }
4321
4322 /**
4323  * qla4_8xxx_check_temp - Check the ISP82XX temperature.
4324  * @ha: adapter block pointer.
4325  *
4326  * Note: The caller should not hold the idc lock.
4327  **/
4328 static int qla4_8xxx_check_temp(struct scsi_qla_host *ha)
4329 {
4330         uint32_t temp, temp_state, temp_val;
4331         int status = QLA_SUCCESS;
4332
4333         temp = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_TEMP_STATE);
4334
4335         temp_state = qla82xx_get_temp_state(temp);
4336         temp_val = qla82xx_get_temp_val(temp);
4337
4338         if (temp_state == QLA82XX_TEMP_PANIC) {
4339                 ql4_printk(KERN_WARNING, ha, "Device temperature %d degrees C"
4340                            " exceeds maximum allowed. Hardware has been shut"
4341                            " down.\n", temp_val);
4342                 status = QLA_ERROR;
4343         } else if (temp_state == QLA82XX_TEMP_WARN) {
4344                 if (ha->temperature == QLA82XX_TEMP_NORMAL)
4345                         ql4_printk(KERN_WARNING, ha, "Device temperature %d"
4346                                    " degrees C exceeds operating range."
4347                                    " Immediate action needed.\n", temp_val);
4348         } else {
4349                 if (ha->temperature == QLA82XX_TEMP_WARN)
4350                         ql4_printk(KERN_INFO, ha, "Device temperature is"
4351                                    " now %d degrees C in normal range.\n",
4352                                    temp_val);
4353         }
4354         ha->temperature = temp_state;
4355         return status;
4356 }
4357
4358 /**
4359  * qla4_8xxx_check_fw_alive  - Check firmware health
4360  * @ha: Pointer to host adapter structure.
4361  *
4362  * Context: Interrupt
4363  **/
4364 static int qla4_8xxx_check_fw_alive(struct scsi_qla_host *ha)
4365 {
4366         uint32_t fw_heartbeat_counter;
4367         int status = QLA_SUCCESS;
4368
4369         fw_heartbeat_counter = qla4_8xxx_rd_direct(ha,
4370                                                    QLA8XXX_PEG_ALIVE_COUNTER);
4371         /* If PEG_ALIVE_COUNTER is 0xffffffff, AER/EEH is in progress, ignore */
4372         if (fw_heartbeat_counter == 0xffffffff) {
4373                 DEBUG2(printk(KERN_WARNING "scsi%ld: %s: Device in frozen "
4374                     "state, QLA82XX_PEG_ALIVE_COUNTER is 0xffffffff\n",
4375                     ha->host_no, __func__));
4376                 return status;
4377         }
4378
4379         if (ha->fw_heartbeat_counter == fw_heartbeat_counter) {
4380                 ha->seconds_since_last_heartbeat++;
4381                 /* FW not alive after 2 seconds */
4382                 if (ha->seconds_since_last_heartbeat == 2) {
4383                         ha->seconds_since_last_heartbeat = 0;
4384                         qla4_8xxx_dump_peg_reg(ha);
4385                         status = QLA_ERROR;
4386                 }
4387         } else
4388                 ha->seconds_since_last_heartbeat = 0;
4389
4390         ha->fw_heartbeat_counter = fw_heartbeat_counter;
4391         return status;
4392 }
4393
4394 static void qla4_8xxx_process_fw_error(struct scsi_qla_host *ha)
4395 {
4396         uint32_t halt_status;
4397         int halt_status_unrecoverable = 0;
4398
4399         halt_status = qla4_8xxx_rd_direct(ha, QLA8XXX_PEG_HALT_STATUS1);
4400
4401         if (is_qla8022(ha)) {
4402                 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
4403                            __func__);
4404                 qla4_82xx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
4405                                 CRB_NIU_XG_PAUSE_CTL_P0 |
4406                                 CRB_NIU_XG_PAUSE_CTL_P1);
4407
4408                 if (QLA82XX_FWERROR_CODE(halt_status) == 0x67)
4409                         ql4_printk(KERN_ERR, ha, "%s: Firmware aborted with error code 0x00006700. Device is being reset\n",
4410                                    __func__);
4411                 if (halt_status & HALT_STATUS_UNRECOVERABLE)
4412                         halt_status_unrecoverable = 1;
4413         } else if (is_qla8032(ha) || is_qla8042(ha)) {
4414                 if (halt_status & QLA83XX_HALT_STATUS_FW_RESET)
4415                         ql4_printk(KERN_ERR, ha, "%s: Firmware error detected device is being reset\n",
4416                                    __func__);
4417                 else if (halt_status & QLA83XX_HALT_STATUS_UNRECOVERABLE)
4418                         halt_status_unrecoverable = 1;
4419         }
4420
4421         /*
4422          * Since we cannot change dev_state in interrupt context,
4423          * set appropriate DPC flag then wakeup DPC
4424          */
4425         if (halt_status_unrecoverable) {
4426                 set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
4427         } else {
4428                 ql4_printk(KERN_INFO, ha, "%s: detect abort needed!\n",
4429                            __func__);
4430                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
4431         }
4432         qla4xxx_mailbox_premature_completion(ha);
4433         qla4xxx_wake_dpc(ha);
4434 }
4435
4436 /**
4437  * qla4_8xxx_watchdog - Poll dev state
4438  * @ha: Pointer to host adapter structure.
4439  *
4440  * Context: Interrupt
4441  **/
4442 void qla4_8xxx_watchdog(struct scsi_qla_host *ha)
4443 {
4444         uint32_t dev_state;
4445         uint32_t idc_ctrl;
4446
4447         if (is_qla8032(ha) &&
4448             (qla4_83xx_is_detached(ha) == QLA_SUCCESS))
4449                 WARN_ONCE(1, "%s: iSCSI function %d marked invisible\n",
4450                           __func__, ha->func_num);
4451
4452         /* don't poll if reset is going on */
4453         if (!(test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) ||
4454             test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
4455             test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags))) {
4456                 dev_state = qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE);
4457
4458                 if (qla4_8xxx_check_temp(ha)) {
4459                         if (is_qla8022(ha)) {
4460                                 ql4_printk(KERN_INFO, ha, "disabling pause transmit on port 0 & 1.\n");
4461                                 qla4_82xx_wr_32(ha, QLA82XX_CRB_NIU + 0x98,
4462                                                 CRB_NIU_XG_PAUSE_CTL_P0 |
4463                                                 CRB_NIU_XG_PAUSE_CTL_P1);
4464                         }
4465                         set_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags);
4466                         qla4xxx_wake_dpc(ha);
4467                 } else if (dev_state == QLA8XXX_DEV_NEED_RESET &&
4468                            !test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
4469
4470                         ql4_printk(KERN_INFO, ha, "%s: HW State: NEED RESET!\n",
4471                                    __func__);
4472
4473                         if (is_qla8032(ha) || is_qla8042(ha)) {
4474                                 idc_ctrl = qla4_83xx_rd_reg(ha,
4475                                                         QLA83XX_IDC_DRV_CTRL);
4476                                 if (!(idc_ctrl & GRACEFUL_RESET_BIT1)) {
4477                                         ql4_printk(KERN_INFO, ha, "%s: Graceful reset bit is not set\n",
4478                                                    __func__);
4479                                         qla4xxx_mailbox_premature_completion(
4480                                                                             ha);
4481                                 }
4482                         }
4483
4484                         if ((is_qla8032(ha) || is_qla8042(ha)) ||
4485                             (is_qla8022(ha) && !ql4xdontresethba)) {
4486                                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
4487                                 qla4xxx_wake_dpc(ha);
4488                         }
4489                 } else if (dev_state == QLA8XXX_DEV_NEED_QUIESCENT &&
4490                     !test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
4491                         ql4_printk(KERN_INFO, ha, "%s: HW State: NEED QUIES!\n",
4492                             __func__);
4493                         set_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags);
4494                         qla4xxx_wake_dpc(ha);
4495                 } else  {
4496                         /* Check firmware health */
4497                         if (qla4_8xxx_check_fw_alive(ha))
4498                                 qla4_8xxx_process_fw_error(ha);
4499                 }
4500         }
4501 }
4502
4503 static void qla4xxx_check_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
4504 {
4505         struct iscsi_session *sess;
4506         struct ddb_entry *ddb_entry;
4507         struct scsi_qla_host *ha;
4508
4509         sess = cls_sess->dd_data;
4510         ddb_entry = sess->dd_data;
4511         ha = ddb_entry->ha;
4512
4513         if (!(ddb_entry->ddb_type == FLASH_DDB))
4514                 return;
4515
4516         if (adapter_up(ha) && !test_bit(DF_RELOGIN, &ddb_entry->flags) &&
4517             !iscsi_is_session_online(cls_sess)) {
4518                 if (atomic_read(&ddb_entry->retry_relogin_timer) !=
4519                     INVALID_ENTRY) {
4520                         if (atomic_read(&ddb_entry->retry_relogin_timer) ==
4521                                         0) {
4522                                 atomic_set(&ddb_entry->retry_relogin_timer,
4523                                            INVALID_ENTRY);
4524                                 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
4525                                 set_bit(DF_RELOGIN, &ddb_entry->flags);
4526                                 DEBUG2(ql4_printk(KERN_INFO, ha,
4527                                        "%s: index [%d] login device\n",
4528                                         __func__, ddb_entry->fw_ddb_index));
4529                         } else
4530                                 atomic_dec(&ddb_entry->retry_relogin_timer);
4531                 }
4532         }
4533
4534         /* Wait for relogin to timeout */
4535         if (atomic_read(&ddb_entry->relogin_timer) &&
4536             (atomic_dec_and_test(&ddb_entry->relogin_timer) != 0)) {
4537                 /*
4538                  * If the relogin times out and the device is
4539                  * still NOT ONLINE then try and relogin again.
4540                  */
4541                 if (!iscsi_is_session_online(cls_sess)) {
4542                         /* Reset retry relogin timer */
4543                         atomic_inc(&ddb_entry->relogin_retry_count);
4544                         DEBUG2(ql4_printk(KERN_INFO, ha,
4545                                 "%s: index[%d] relogin timed out-retrying"
4546                                 " relogin (%d), retry (%d)\n", __func__,
4547                                 ddb_entry->fw_ddb_index,
4548                                 atomic_read(&ddb_entry->relogin_retry_count),
4549                                 ddb_entry->default_time2wait + 4));
4550                         set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
4551                         atomic_set(&ddb_entry->retry_relogin_timer,
4552                                    ddb_entry->default_time2wait + 4);
4553                 }
4554         }
4555 }
4556
4557 /**
4558  * qla4xxx_timer - checks every second for work to do.
4559  * @t: Context to obtain pointer to host adapter structure.
4560  **/
4561 static void qla4xxx_timer(struct timer_list *t)
4562 {
4563         struct scsi_qla_host *ha = from_timer(ha, t, timer);
4564         int start_dpc = 0;
4565         uint16_t w;
4566
4567         iscsi_host_for_each_session(ha->host, qla4xxx_check_relogin_flash_ddb);
4568
4569         /* If we are in the middle of AER/EEH processing
4570          * skip any processing and reschedule the timer
4571          */
4572         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
4573                 mod_timer(&ha->timer, jiffies + HZ);
4574                 return;
4575         }
4576
4577         /* Hardware read to trigger an EEH error during mailbox waits. */
4578         if (!pci_channel_offline(ha->pdev))
4579                 pci_read_config_word(ha->pdev, PCI_VENDOR_ID, &w);
4580
4581         if (is_qla80XX(ha))
4582                 qla4_8xxx_watchdog(ha);
4583
4584         if (is_qla40XX(ha)) {
4585                 /* Check for heartbeat interval. */
4586                 if (ha->firmware_options & FWOPT_HEARTBEAT_ENABLE &&
4587                     ha->heartbeat_interval != 0) {
4588                         ha->seconds_since_last_heartbeat++;
4589                         if (ha->seconds_since_last_heartbeat >
4590                             ha->heartbeat_interval + 2)
4591                                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
4592                 }
4593         }
4594
4595         /* Process any deferred work. */
4596         if (!list_empty(&ha->work_list))
4597                 start_dpc++;
4598
4599         /* Wakeup the dpc routine for this adapter, if needed. */
4600         if (start_dpc ||
4601              test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
4602              test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags) ||
4603              test_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags) ||
4604              test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
4605              test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
4606              test_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags) ||
4607              test_bit(DPC_LINK_CHANGED, &ha->dpc_flags) ||
4608              test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags) ||
4609              test_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags) ||
4610              test_bit(DPC_SYSFS_DDB_EXPORT, &ha->dpc_flags) ||
4611              test_bit(DPC_AEN, &ha->dpc_flags)) {
4612                 DEBUG2(printk("scsi%ld: %s: scheduling dpc routine"
4613                               " - dpc flags = 0x%lx\n",
4614                               ha->host_no, __func__, ha->dpc_flags));
4615                 qla4xxx_wake_dpc(ha);
4616         }
4617
4618         /* Reschedule timer thread to call us back in one second */
4619         mod_timer(&ha->timer, jiffies + HZ);
4620
4621         DEBUG2(ha->seconds_since_last_intr++);
4622 }
4623
4624 /**
4625  * qla4xxx_cmd_wait - waits for all outstanding commands to complete
4626  * @ha: Pointer to host adapter structure.
4627  *
4628  * This routine stalls the driver until all outstanding commands are returned.
4629  * Caller must release the Hardware Lock prior to calling this routine.
4630  **/
4631 static int qla4xxx_cmd_wait(struct scsi_qla_host *ha)
4632 {
4633         uint32_t index = 0;
4634         unsigned long flags;
4635         struct scsi_cmnd *cmd;
4636         unsigned long wtime;
4637         uint32_t wtmo;
4638
4639         if (is_qla40XX(ha))
4640                 wtmo = WAIT_CMD_TOV;
4641         else
4642                 wtmo = ha->nx_reset_timeout / 2;
4643
4644         wtime = jiffies + (wtmo * HZ);
4645
4646         DEBUG2(ql4_printk(KERN_INFO, ha,
4647                           "Wait up to %u seconds for cmds to complete\n",
4648                           wtmo));
4649
4650         while (!time_after_eq(jiffies, wtime)) {
4651                 spin_lock_irqsave(&ha->hardware_lock, flags);
4652                 /* Find a command that hasn't completed. */
4653                 for (index = 0; index < ha->host->can_queue; index++) {
4654                         cmd = scsi_host_find_tag(ha->host, index);
4655                         /*
4656                          * We cannot just check if the index is valid,
4657                          * becase if we are run from the scsi eh, then
4658                          * the scsi/block layer is going to prevent
4659                          * the tag from being released.
4660                          */
4661                         if (cmd != NULL && CMD_SP(cmd))
4662                                 break;
4663                 }
4664                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4665
4666                 /* If No Commands are pending, wait is complete */
4667                 if (index == ha->host->can_queue)
4668                         return QLA_SUCCESS;
4669
4670                 msleep(1000);
4671         }
4672         /* If we timed out on waiting for commands to come back
4673          * return ERROR. */
4674         return QLA_ERROR;
4675 }
4676
4677 int qla4xxx_hw_reset(struct scsi_qla_host *ha)
4678 {
4679         uint32_t ctrl_status;
4680         unsigned long flags = 0;
4681
4682         DEBUG2(printk(KERN_ERR "scsi%ld: %s\n", ha->host_no, __func__));
4683
4684         if (ql4xxx_lock_drvr_wait(ha) != QLA_SUCCESS)
4685                 return QLA_ERROR;
4686
4687         spin_lock_irqsave(&ha->hardware_lock, flags);
4688
4689         /*
4690          * If the SCSI Reset Interrupt bit is set, clear it.
4691          * Otherwise, the Soft Reset won't work.
4692          */
4693         ctrl_status = readw(&ha->reg->ctrl_status);
4694         if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0)
4695                 writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
4696
4697         /* Issue Soft Reset */
4698         writel(set_rmask(CSR_SOFT_RESET), &ha->reg->ctrl_status);
4699         readl(&ha->reg->ctrl_status);
4700
4701         spin_unlock_irqrestore(&ha->hardware_lock, flags);
4702         return QLA_SUCCESS;
4703 }
4704
4705 /**
4706  * qla4xxx_soft_reset - performs soft reset.
4707  * @ha: Pointer to host adapter structure.
4708  **/
4709 int qla4xxx_soft_reset(struct scsi_qla_host *ha)
4710 {
4711         uint32_t max_wait_time;
4712         unsigned long flags = 0;
4713         int status;
4714         uint32_t ctrl_status;
4715
4716         status = qla4xxx_hw_reset(ha);
4717         if (status != QLA_SUCCESS)
4718                 return status;
4719
4720         status = QLA_ERROR;
4721         /* Wait until the Network Reset Intr bit is cleared */
4722         max_wait_time = RESET_INTR_TOV;
4723         do {
4724                 spin_lock_irqsave(&ha->hardware_lock, flags);
4725                 ctrl_status = readw(&ha->reg->ctrl_status);
4726                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4727
4728                 if ((ctrl_status & CSR_NET_RESET_INTR) == 0)
4729                         break;
4730
4731                 msleep(1000);
4732         } while ((--max_wait_time));
4733
4734         if ((ctrl_status & CSR_NET_RESET_INTR) != 0) {
4735                 DEBUG2(printk(KERN_WARNING
4736                               "scsi%ld: Network Reset Intr not cleared by "
4737                               "Network function, clearing it now!\n",
4738                               ha->host_no));
4739                 spin_lock_irqsave(&ha->hardware_lock, flags);
4740                 writel(set_rmask(CSR_NET_RESET_INTR), &ha->reg->ctrl_status);
4741                 readl(&ha->reg->ctrl_status);
4742                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4743         }
4744
4745         /* Wait until the firmware tells us the Soft Reset is done */
4746         max_wait_time = SOFT_RESET_TOV;
4747         do {
4748                 spin_lock_irqsave(&ha->hardware_lock, flags);
4749                 ctrl_status = readw(&ha->reg->ctrl_status);
4750                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4751
4752                 if ((ctrl_status & CSR_SOFT_RESET) == 0) {
4753                         status = QLA_SUCCESS;
4754                         break;
4755                 }
4756
4757                 msleep(1000);
4758         } while ((--max_wait_time));
4759
4760         /*
4761          * Also, make sure that the SCSI Reset Interrupt bit has been cleared
4762          * after the soft reset has taken place.
4763          */
4764         spin_lock_irqsave(&ha->hardware_lock, flags);
4765         ctrl_status = readw(&ha->reg->ctrl_status);
4766         if ((ctrl_status & CSR_SCSI_RESET_INTR) != 0) {
4767                 writel(set_rmask(CSR_SCSI_RESET_INTR), &ha->reg->ctrl_status);
4768                 readl(&ha->reg->ctrl_status);
4769         }
4770         spin_unlock_irqrestore(&ha->hardware_lock, flags);
4771
4772         /* If soft reset fails then most probably the bios on other
4773          * function is also enabled.
4774          * Since the initialization is sequential the other fn
4775          * wont be able to acknowledge the soft reset.
4776          * Issue a force soft reset to workaround this scenario.
4777          */
4778         if (max_wait_time == 0) {
4779                 /* Issue Force Soft Reset */
4780                 spin_lock_irqsave(&ha->hardware_lock, flags);
4781                 writel(set_rmask(CSR_FORCE_SOFT_RESET), &ha->reg->ctrl_status);
4782                 readl(&ha->reg->ctrl_status);
4783                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
4784                 /* Wait until the firmware tells us the Soft Reset is done */
4785                 max_wait_time = SOFT_RESET_TOV;
4786                 do {
4787                         spin_lock_irqsave(&ha->hardware_lock, flags);
4788                         ctrl_status = readw(&ha->reg->ctrl_status);
4789                         spin_unlock_irqrestore(&ha->hardware_lock, flags);
4790
4791                         if ((ctrl_status & CSR_FORCE_SOFT_RESET) == 0) {
4792                                 status = QLA_SUCCESS;
4793                                 break;
4794                         }
4795
4796                         msleep(1000);
4797                 } while ((--max_wait_time));
4798         }
4799
4800         return status;
4801 }
4802
4803 /**
4804  * qla4xxx_abort_active_cmds - returns all outstanding i/o requests to O.S.
4805  * @ha: Pointer to host adapter structure.
4806  * @res: returned scsi status
4807  *
4808  * This routine is called just prior to a HARD RESET to return all
4809  * outstanding commands back to the Operating System.
4810  * Caller should make sure that the following locks are released
4811  * before this calling routine: Hardware lock, and io_request_lock.
4812  **/
4813 static void qla4xxx_abort_active_cmds(struct scsi_qla_host *ha, int res)
4814 {
4815         struct srb *srb;
4816         int i;
4817         unsigned long flags;
4818
4819         spin_lock_irqsave(&ha->hardware_lock, flags);
4820         for (i = 0; i < ha->host->can_queue; i++) {
4821                 srb = qla4xxx_del_from_active_array(ha, i);
4822                 if (srb != NULL) {
4823                         srb->cmd->result = res;
4824                         kref_put(&srb->srb_ref, qla4xxx_srb_compl);
4825                 }
4826         }
4827         spin_unlock_irqrestore(&ha->hardware_lock, flags);
4828 }
4829
4830 void qla4xxx_dead_adapter_cleanup(struct scsi_qla_host *ha)
4831 {
4832         clear_bit(AF_ONLINE, &ha->flags);
4833
4834         /* Disable the board */
4835         ql4_printk(KERN_INFO, ha, "Disabling the board\n");
4836
4837         qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
4838         qla4xxx_mark_all_devices_missing(ha);
4839         clear_bit(AF_INIT_DONE, &ha->flags);
4840 }
4841
4842 static void qla4xxx_fail_session(struct iscsi_cls_session *cls_session)
4843 {
4844         struct iscsi_session *sess;
4845         struct ddb_entry *ddb_entry;
4846
4847         sess = cls_session->dd_data;
4848         ddb_entry = sess->dd_data;
4849         ddb_entry->fw_ddb_device_state = DDB_DS_SESSION_FAILED;
4850
4851         if (ddb_entry->ddb_type == FLASH_DDB)
4852                 iscsi_block_session(ddb_entry->sess);
4853         else
4854                 iscsi_session_failure(cls_session->dd_data,
4855                                       ISCSI_ERR_CONN_FAILED);
4856 }
4857
4858 /**
4859  * qla4xxx_recover_adapter - recovers adapter after a fatal error
4860  * @ha: Pointer to host adapter structure.
4861  **/
4862 static int qla4xxx_recover_adapter(struct scsi_qla_host *ha)
4863 {
4864         int status = QLA_ERROR;
4865         uint8_t reset_chip = 0;
4866         uint32_t dev_state;
4867         unsigned long wait;
4868
4869         /* Stall incoming I/O until we are done */
4870         scsi_block_requests(ha->host);
4871         clear_bit(AF_ONLINE, &ha->flags);
4872         clear_bit(AF_LINK_UP, &ha->flags);
4873
4874         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: adapter OFFLINE\n", __func__));
4875
4876         set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
4877
4878         if ((is_qla8032(ha) || is_qla8042(ha)) &&
4879             !test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
4880                 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
4881                            __func__);
4882                 /* disable pause frame for ISP83xx */
4883                 qla4_83xx_disable_pause(ha);
4884         }
4885
4886         iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
4887
4888         if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
4889                 reset_chip = 1;
4890
4891         /* For the DPC_RESET_HA_INTR case (ISP-4xxx specific)
4892          * do not reset adapter, jump to initialize_adapter */
4893         if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
4894                 status = QLA_SUCCESS;
4895                 goto recover_ha_init_adapter;
4896         }
4897
4898         /* For the ISP-8xxx adapter, issue a stop_firmware if invoked
4899          * from eh_host_reset or ioctl module */
4900         if (is_qla80XX(ha) && !reset_chip &&
4901             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags)) {
4902
4903                 DEBUG2(ql4_printk(KERN_INFO, ha,
4904                     "scsi%ld: %s - Performing stop_firmware...\n",
4905                     ha->host_no, __func__));
4906                 status = ha->isp_ops->reset_firmware(ha);
4907                 if (status == QLA_SUCCESS) {
4908                         ha->isp_ops->disable_intrs(ha);
4909                         qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
4910                         qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
4911                 } else {
4912                         /* If the stop_firmware fails then
4913                          * reset the entire chip */
4914                         reset_chip = 1;
4915                         clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
4916                         set_bit(DPC_RESET_HA, &ha->dpc_flags);
4917                 }
4918         }
4919
4920         /* Issue full chip reset if recovering from a catastrophic error,
4921          * or if stop_firmware fails for ISP-8xxx.
4922          * This is the default case for ISP-4xxx */
4923         if (is_qla40XX(ha) || reset_chip) {
4924                 if (is_qla40XX(ha))
4925                         goto chip_reset;
4926
4927                 /* Check if 8XXX firmware is alive or not
4928                  * We may have arrived here from NEED_RESET
4929                  * detection only */
4930                 if (test_bit(AF_FW_RECOVERY, &ha->flags))
4931                         goto chip_reset;
4932
4933                 wait = jiffies + (FW_ALIVE_WAIT_TOV * HZ);
4934                 while (time_before(jiffies, wait)) {
4935                         if (qla4_8xxx_check_fw_alive(ha)) {
4936                                 qla4xxx_mailbox_premature_completion(ha);
4937                                 break;
4938                         }
4939
4940                         set_current_state(TASK_UNINTERRUPTIBLE);
4941                         schedule_timeout(HZ);
4942                 }
4943 chip_reset:
4944                 if (!test_bit(AF_FW_RECOVERY, &ha->flags))
4945                         qla4xxx_cmd_wait(ha);
4946
4947                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
4948                 DEBUG2(ql4_printk(KERN_INFO, ha,
4949                     "scsi%ld: %s - Performing chip reset..\n",
4950                     ha->host_no, __func__));
4951                 status = ha->isp_ops->reset_chip(ha);
4952                 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
4953         }
4954
4955         /* Flush any pending ddb changed AENs */
4956         qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
4957
4958 recover_ha_init_adapter:
4959         /* Upon successful firmware/chip reset, re-initialize the adapter */
4960         if (status == QLA_SUCCESS) {
4961                 /* For ISP-4xxx, force function 1 to always initialize
4962                  * before function 3 to prevent both funcions from
4963                  * stepping on top of the other */
4964                 if (is_qla40XX(ha) && (ha->mac_index == 3))
4965                         ssleep(6);
4966
4967                 /* NOTE: AF_ONLINE flag set upon successful completion of
4968                  * qla4xxx_initialize_adapter */
4969                 status = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
4970                 if (is_qla80XX(ha) && (status == QLA_ERROR)) {
4971                         status = qla4_8xxx_check_init_adapter_retry(ha);
4972                         if (status == QLA_ERROR) {
4973                                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Don't retry recover adapter\n",
4974                                            ha->host_no, __func__);
4975                                 qla4xxx_dead_adapter_cleanup(ha);
4976                                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
4977                                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
4978                                 clear_bit(DPC_RESET_HA_FW_CONTEXT,
4979                                           &ha->dpc_flags);
4980                                 goto exit_recover;
4981                         }
4982                 }
4983         }
4984
4985         /* Retry failed adapter initialization, if necessary
4986          * Do not retry initialize_adapter for RESET_HA_INTR (ISP-4xxx specific)
4987          * case to prevent ping-pong resets between functions */
4988         if (!test_bit(AF_ONLINE, &ha->flags) &&
4989             !test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
4990                 /* Adapter initialization failed, see if we can retry
4991                  * resetting the ha.
4992                  * Since we don't want to block the DPC for too long
4993                  * with multiple resets in the same thread,
4994                  * utilize DPC to retry */
4995                 if (is_qla80XX(ha)) {
4996                         ha->isp_ops->idc_lock(ha);
4997                         dev_state = qla4_8xxx_rd_direct(ha,
4998                                                         QLA8XXX_CRB_DEV_STATE);
4999                         ha->isp_ops->idc_unlock(ha);
5000                         if (dev_state == QLA8XXX_DEV_FAILED) {
5001                                 ql4_printk(KERN_INFO, ha, "%s: don't retry "
5002                                            "recover adapter. H/W is in Failed "
5003                                            "state\n", __func__);
5004                                 qla4xxx_dead_adapter_cleanup(ha);
5005                                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
5006                                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
5007                                 clear_bit(DPC_RESET_HA_FW_CONTEXT,
5008                                                 &ha->dpc_flags);
5009                                 status = QLA_ERROR;
5010
5011                                 goto exit_recover;
5012                         }
5013                 }
5014
5015                 if (!test_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags)) {
5016                         ha->retry_reset_ha_cnt = MAX_RESET_HA_RETRIES;
5017                         DEBUG2(printk("scsi%ld: recover adapter - retrying "
5018                                       "(%d) more times\n", ha->host_no,
5019                                       ha->retry_reset_ha_cnt));
5020                         set_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
5021                         status = QLA_ERROR;
5022                 } else {
5023                         if (ha->retry_reset_ha_cnt > 0) {
5024                                 /* Schedule another Reset HA--DPC will retry */
5025                                 ha->retry_reset_ha_cnt--;
5026                                 DEBUG2(printk("scsi%ld: recover adapter - "
5027                                               "retry remaining %d\n",
5028                                               ha->host_no,
5029                                               ha->retry_reset_ha_cnt));
5030                                 status = QLA_ERROR;
5031                         }
5032
5033                         if (ha->retry_reset_ha_cnt == 0) {
5034                                 /* Recover adapter retries have been exhausted.
5035                                  * Adapter DEAD */
5036                                 DEBUG2(printk("scsi%ld: recover adapter "
5037                                               "failed - board disabled\n",
5038                                               ha->host_no));
5039                                 qla4xxx_dead_adapter_cleanup(ha);
5040                                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
5041                                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
5042                                 clear_bit(DPC_RESET_HA_FW_CONTEXT,
5043                                           &ha->dpc_flags);
5044                                 status = QLA_ERROR;
5045                         }
5046                 }
5047         } else {
5048                 clear_bit(DPC_RESET_HA, &ha->dpc_flags);
5049                 clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
5050                 clear_bit(DPC_RETRY_RESET_HA, &ha->dpc_flags);
5051         }
5052
5053 exit_recover:
5054         ha->adapter_error_count++;
5055
5056         if (test_bit(AF_ONLINE, &ha->flags))
5057                 ha->isp_ops->enable_intrs(ha);
5058
5059         scsi_unblock_requests(ha->host);
5060
5061         clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
5062         DEBUG2(printk("scsi%ld: recover adapter: %s\n", ha->host_no,
5063             status == QLA_ERROR ? "FAILED" : "SUCCEEDED"));
5064
5065         return status;
5066 }
5067
5068 static void qla4xxx_relogin_devices(struct iscsi_cls_session *cls_session)
5069 {
5070         struct iscsi_session *sess;
5071         struct ddb_entry *ddb_entry;
5072         struct scsi_qla_host *ha;
5073
5074         sess = cls_session->dd_data;
5075         ddb_entry = sess->dd_data;
5076         ha = ddb_entry->ha;
5077         if (!iscsi_is_session_online(cls_session)) {
5078                 if (ddb_entry->fw_ddb_device_state == DDB_DS_SESSION_ACTIVE) {
5079                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
5080                                    " unblock session\n", ha->host_no, __func__,
5081                                    ddb_entry->fw_ddb_index);
5082                         iscsi_unblock_session(ddb_entry->sess);
5083                 } else {
5084                         /* Trigger relogin */
5085                         if (ddb_entry->ddb_type == FLASH_DDB) {
5086                                 if (!(test_bit(DF_RELOGIN, &ddb_entry->flags) ||
5087                                       test_bit(DF_DISABLE_RELOGIN,
5088                                                &ddb_entry->flags)))
5089                                         qla4xxx_arm_relogin_timer(ddb_entry);
5090                         } else
5091                                 iscsi_session_failure(cls_session->dd_data,
5092                                                       ISCSI_ERR_CONN_FAILED);
5093                 }
5094         }
5095 }
5096
5097 int qla4xxx_unblock_flash_ddb(struct iscsi_cls_session *cls_session)
5098 {
5099         struct iscsi_session *sess;
5100         struct ddb_entry *ddb_entry;
5101         struct scsi_qla_host *ha;
5102
5103         sess = cls_session->dd_data;
5104         ddb_entry = sess->dd_data;
5105         ha = ddb_entry->ha;
5106         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
5107                    " unblock session\n", ha->host_no, __func__,
5108                    ddb_entry->fw_ddb_index);
5109
5110         iscsi_unblock_session(ddb_entry->sess);
5111
5112         /* Start scan target */
5113         if (test_bit(AF_ONLINE, &ha->flags)) {
5114                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
5115                            " start scan\n", ha->host_no, __func__,
5116                            ddb_entry->fw_ddb_index);
5117                 scsi_queue_work(ha->host, &ddb_entry->sess->scan_work);
5118         }
5119         return QLA_SUCCESS;
5120 }
5121
5122 int qla4xxx_unblock_ddb(struct iscsi_cls_session *cls_session)
5123 {
5124         struct iscsi_session *sess;
5125         struct ddb_entry *ddb_entry;
5126         struct scsi_qla_host *ha;
5127         int status = QLA_SUCCESS;
5128
5129         sess = cls_session->dd_data;
5130         ddb_entry = sess->dd_data;
5131         ha = ddb_entry->ha;
5132         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: ddb[%d]"
5133                    " unblock user space session\n", ha->host_no, __func__,
5134                    ddb_entry->fw_ddb_index);
5135
5136         if (!iscsi_is_session_online(cls_session)) {
5137                 iscsi_conn_start(ddb_entry->conn);
5138                 iscsi_conn_login_event(ddb_entry->conn,
5139                                        ISCSI_CONN_STATE_LOGGED_IN);
5140         } else {
5141                 ql4_printk(KERN_INFO, ha,
5142                            "scsi%ld: %s: ddb[%d] session [%d] already logged in\n",
5143                            ha->host_no, __func__, ddb_entry->fw_ddb_index,
5144                            cls_session->sid);
5145                 status = QLA_ERROR;
5146         }
5147
5148         return status;
5149 }
5150
5151 static void qla4xxx_relogin_all_devices(struct scsi_qla_host *ha)
5152 {
5153         iscsi_host_for_each_session(ha->host, qla4xxx_relogin_devices);
5154 }
5155
5156 static void qla4xxx_relogin_flash_ddb(struct iscsi_cls_session *cls_sess)
5157 {
5158         uint16_t relogin_timer;
5159         struct iscsi_session *sess;
5160         struct ddb_entry *ddb_entry;
5161         struct scsi_qla_host *ha;
5162
5163         sess = cls_sess->dd_data;
5164         ddb_entry = sess->dd_data;
5165         ha = ddb_entry->ha;
5166
5167         relogin_timer = max(ddb_entry->default_relogin_timeout,
5168                             (uint16_t)RELOGIN_TOV);
5169         atomic_set(&ddb_entry->relogin_timer, relogin_timer);
5170
5171         DEBUG2(ql4_printk(KERN_INFO, ha,
5172                           "scsi%ld: Relogin index [%d]. TOV=%d\n", ha->host_no,
5173                           ddb_entry->fw_ddb_index, relogin_timer));
5174
5175         qla4xxx_login_flash_ddb(cls_sess);
5176 }
5177
5178 static void qla4xxx_dpc_relogin(struct iscsi_cls_session *cls_sess)
5179 {
5180         struct iscsi_session *sess;
5181         struct ddb_entry *ddb_entry;
5182         struct scsi_qla_host *ha;
5183
5184         sess = cls_sess->dd_data;
5185         ddb_entry = sess->dd_data;
5186         ha = ddb_entry->ha;
5187
5188         if (!(ddb_entry->ddb_type == FLASH_DDB))
5189                 return;
5190
5191         if (test_bit(DF_DISABLE_RELOGIN, &ddb_entry->flags))
5192                 return;
5193
5194         if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags) &&
5195             !iscsi_is_session_online(cls_sess)) {
5196                 DEBUG2(ql4_printk(KERN_INFO, ha,
5197                                   "relogin issued\n"));
5198                 qla4xxx_relogin_flash_ddb(cls_sess);
5199         }
5200 }
5201
5202 void qla4xxx_wake_dpc(struct scsi_qla_host *ha)
5203 {
5204         if (ha->dpc_thread)
5205                 queue_work(ha->dpc_thread, &ha->dpc_work);
5206 }
5207
5208 static struct qla4_work_evt *
5209 qla4xxx_alloc_work(struct scsi_qla_host *ha, uint32_t data_size,
5210                    enum qla4_work_type type)
5211 {
5212         struct qla4_work_evt *e;
5213         uint32_t size = sizeof(struct qla4_work_evt) + data_size;
5214
5215         e = kzalloc(size, GFP_ATOMIC);
5216         if (!e)
5217                 return NULL;
5218
5219         INIT_LIST_HEAD(&e->list);
5220         e->type = type;
5221         return e;
5222 }
5223
5224 static void qla4xxx_post_work(struct scsi_qla_host *ha,
5225                              struct qla4_work_evt *e)
5226 {
5227         unsigned long flags;
5228
5229         spin_lock_irqsave(&ha->work_lock, flags);
5230         list_add_tail(&e->list, &ha->work_list);
5231         spin_unlock_irqrestore(&ha->work_lock, flags);
5232         qla4xxx_wake_dpc(ha);
5233 }
5234
5235 int qla4xxx_post_aen_work(struct scsi_qla_host *ha,
5236                           enum iscsi_host_event_code aen_code,
5237                           uint32_t data_size, uint8_t *data)
5238 {
5239         struct qla4_work_evt *e;
5240
5241         e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_AEN);
5242         if (!e)
5243                 return QLA_ERROR;
5244
5245         e->u.aen.code = aen_code;
5246         e->u.aen.data_size = data_size;
5247         memcpy(e->u.aen.data, data, data_size);
5248
5249         qla4xxx_post_work(ha, e);
5250
5251         return QLA_SUCCESS;
5252 }
5253
5254 int qla4xxx_post_ping_evt_work(struct scsi_qla_host *ha,
5255                                uint32_t status, uint32_t pid,
5256                                uint32_t data_size, uint8_t *data)
5257 {
5258         struct qla4_work_evt *e;
5259
5260         e = qla4xxx_alloc_work(ha, data_size, QLA4_EVENT_PING_STATUS);
5261         if (!e)
5262                 return QLA_ERROR;
5263
5264         e->u.ping.status = status;
5265         e->u.ping.pid = pid;
5266         e->u.ping.data_size = data_size;
5267         memcpy(e->u.ping.data, data, data_size);
5268
5269         qla4xxx_post_work(ha, e);
5270
5271         return QLA_SUCCESS;
5272 }
5273
5274 static void qla4xxx_do_work(struct scsi_qla_host *ha)
5275 {
5276         struct qla4_work_evt *e, *tmp;
5277         unsigned long flags;
5278         LIST_HEAD(work);
5279
5280         spin_lock_irqsave(&ha->work_lock, flags);
5281         list_splice_init(&ha->work_list, &work);
5282         spin_unlock_irqrestore(&ha->work_lock, flags);
5283
5284         list_for_each_entry_safe(e, tmp, &work, list) {
5285                 list_del_init(&e->list);
5286
5287                 switch (e->type) {
5288                 case QLA4_EVENT_AEN:
5289                         iscsi_post_host_event(ha->host_no,
5290                                               &qla4xxx_iscsi_transport,
5291                                               e->u.aen.code,
5292                                               e->u.aen.data_size,
5293                                               e->u.aen.data);
5294                         break;
5295                 case QLA4_EVENT_PING_STATUS:
5296                         iscsi_ping_comp_event(ha->host_no,
5297                                               &qla4xxx_iscsi_transport,
5298                                               e->u.ping.status,
5299                                               e->u.ping.pid,
5300                                               e->u.ping.data_size,
5301                                               e->u.ping.data);
5302                         break;
5303                 default:
5304                         ql4_printk(KERN_WARNING, ha, "event type: 0x%x not "
5305                                    "supported", e->type);
5306                 }
5307                 kfree(e);
5308         }
5309 }
5310
5311 /**
5312  * qla4xxx_do_dpc - dpc routine
5313  * @work: Context to obtain pointer to host adapter structure.
5314  *
5315  * This routine is a task that is schedule by the interrupt handler
5316  * to perform the background processing for interrupts.  We put it
5317  * on a task queue that is consumed whenever the scheduler runs; that's
5318  * so you can do anything (i.e. put the process to sleep etc).  In fact,
5319  * the mid-level tries to sleep when it reaches the driver threshold
5320  * "host->can_queue". This can cause a panic if we were in our interrupt code.
5321  **/
5322 static void qla4xxx_do_dpc(struct work_struct *work)
5323 {
5324         struct scsi_qla_host *ha =
5325                 container_of(work, struct scsi_qla_host, dpc_work);
5326         int status = QLA_ERROR;
5327
5328         DEBUG2(ql4_printk(KERN_INFO, ha,
5329                           "scsi%ld: %s: DPC handler waking up. flags = 0x%08lx, dpc_flags = 0x%08lx\n",
5330                           ha->host_no, __func__, ha->flags, ha->dpc_flags));
5331
5332         /* Initialization not yet finished. Don't do anything yet. */
5333         if (!test_bit(AF_INIT_DONE, &ha->flags))
5334                 return;
5335
5336         if (test_bit(AF_EEH_BUSY, &ha->flags)) {
5337                 DEBUG2(printk(KERN_INFO "scsi%ld: %s: flags = %lx\n",
5338                     ha->host_no, __func__, ha->flags));
5339                 return;
5340         }
5341
5342         /* post events to application */
5343         qla4xxx_do_work(ha);
5344
5345         if (is_qla80XX(ha)) {
5346                 if (test_bit(DPC_HA_UNRECOVERABLE, &ha->dpc_flags)) {
5347                         if (is_qla8032(ha) || is_qla8042(ha)) {
5348                                 ql4_printk(KERN_INFO, ha, "%s: disabling pause transmit on port 0 & 1.\n",
5349                                            __func__);
5350                                 /* disable pause frame for ISP83xx */
5351                                 qla4_83xx_disable_pause(ha);
5352                         }
5353
5354                         ha->isp_ops->idc_lock(ha);
5355                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
5356                                             QLA8XXX_DEV_FAILED);
5357                         ha->isp_ops->idc_unlock(ha);
5358                         ql4_printk(KERN_INFO, ha, "HW State: FAILED\n");
5359                         qla4_8xxx_device_state_handler(ha);
5360                 }
5361
5362                 if (test_bit(DPC_POST_IDC_ACK, &ha->dpc_flags)) {
5363                         if (is_qla8042(ha)) {
5364                                 if (ha->idc_info.info2 &
5365                                     ENABLE_INTERNAL_LOOPBACK) {
5366                                         ql4_printk(KERN_INFO, ha, "%s: Disabling ACB\n",
5367                                                    __func__);
5368                                         status = qla4_84xx_config_acb(ha,
5369                                                             ACB_CONFIG_DISABLE);
5370                                         if (status != QLA_SUCCESS) {
5371                                                 ql4_printk(KERN_INFO, ha, "%s: ACB config failed\n",
5372                                                            __func__);
5373                                         }
5374                                 }
5375                         }
5376                         qla4_83xx_post_idc_ack(ha);
5377                         clear_bit(DPC_POST_IDC_ACK, &ha->dpc_flags);
5378                 }
5379
5380                 if (is_qla8042(ha) &&
5381                     test_bit(DPC_RESTORE_ACB, &ha->dpc_flags)) {
5382                         ql4_printk(KERN_INFO, ha, "%s: Restoring ACB\n",
5383                                    __func__);
5384                         if (qla4_84xx_config_acb(ha, ACB_CONFIG_SET) !=
5385                             QLA_SUCCESS) {
5386                                 ql4_printk(KERN_INFO, ha, "%s: ACB config failed ",
5387                                            __func__);
5388                         }
5389                         clear_bit(DPC_RESTORE_ACB, &ha->dpc_flags);
5390                 }
5391
5392                 if (test_and_clear_bit(DPC_HA_NEED_QUIESCENT, &ha->dpc_flags)) {
5393                         qla4_8xxx_need_qsnt_handler(ha);
5394                 }
5395         }
5396
5397         if (!test_bit(DPC_RESET_ACTIVE, &ha->dpc_flags) &&
5398             (test_bit(DPC_RESET_HA, &ha->dpc_flags) ||
5399             test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags) ||
5400             test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags))) {
5401                 if ((is_qla8022(ha) && ql4xdontresethba) ||
5402                     ((is_qla8032(ha) || is_qla8042(ha)) &&
5403                      qla4_83xx_idc_dontreset(ha))) {
5404                         DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
5405                             ha->host_no, __func__));
5406                         clear_bit(DPC_RESET_HA, &ha->dpc_flags);
5407                         clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
5408                         clear_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
5409                         goto dpc_post_reset_ha;
5410                 }
5411                 if (test_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags) ||
5412                     test_bit(DPC_RESET_HA, &ha->dpc_flags))
5413                         qla4xxx_recover_adapter(ha);
5414
5415                 if (test_bit(DPC_RESET_HA_INTR, &ha->dpc_flags)) {
5416                         uint8_t wait_time = RESET_INTR_TOV;
5417
5418                         while ((readw(&ha->reg->ctrl_status) &
5419                                 (CSR_SOFT_RESET | CSR_FORCE_SOFT_RESET)) != 0) {
5420                                 if (--wait_time == 0)
5421                                         break;
5422                                 msleep(1000);
5423                         }
5424                         if (wait_time == 0)
5425                                 DEBUG2(printk("scsi%ld: %s: SR|FSR "
5426                                               "bit not cleared-- resetting\n",
5427                                               ha->host_no, __func__));
5428                         qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
5429                         if (ql4xxx_lock_drvr_wait(ha) == QLA_SUCCESS) {
5430                                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
5431                                 status = qla4xxx_recover_adapter(ha);
5432                         }
5433                         clear_bit(DPC_RESET_HA_INTR, &ha->dpc_flags);
5434                         if (status == QLA_SUCCESS)
5435                                 ha->isp_ops->enable_intrs(ha);
5436                 }
5437         }
5438
5439 dpc_post_reset_ha:
5440         /* ---- process AEN? --- */
5441         if (test_and_clear_bit(DPC_AEN, &ha->dpc_flags))
5442                 qla4xxx_process_aen(ha, PROCESS_ALL_AENS);
5443
5444         /* ---- Get DHCP IP Address? --- */
5445         if (test_and_clear_bit(DPC_GET_DHCP_IP_ADDR, &ha->dpc_flags))
5446                 qla4xxx_get_dhcp_ip_address(ha);
5447
5448         /* ---- relogin device? --- */
5449         if (adapter_up(ha) &&
5450             test_and_clear_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags)) {
5451                 iscsi_host_for_each_session(ha->host, qla4xxx_dpc_relogin);
5452         }
5453
5454         /* ---- link change? --- */
5455         if (!test_bit(AF_LOOPBACK, &ha->flags) &&
5456             test_and_clear_bit(DPC_LINK_CHANGED, &ha->dpc_flags)) {
5457                 if (!test_bit(AF_LINK_UP, &ha->flags)) {
5458                         /* ---- link down? --- */
5459                         qla4xxx_mark_all_devices_missing(ha);
5460                 } else {
5461                         /* ---- link up? --- *
5462                          * F/W will auto login to all devices ONLY ONCE after
5463                          * link up during driver initialization and runtime
5464                          * fatal error recovery.  Therefore, the driver must
5465                          * manually relogin to devices when recovering from
5466                          * connection failures, logouts, expired KATO, etc. */
5467                         if (test_and_clear_bit(AF_BUILD_DDB_LIST, &ha->flags)) {
5468                                 qla4xxx_build_ddb_list(ha, ha->is_reset);
5469                                 iscsi_host_for_each_session(ha->host,
5470                                                 qla4xxx_login_flash_ddb);
5471                         } else
5472                                 qla4xxx_relogin_all_devices(ha);
5473                 }
5474         }
5475         if (test_and_clear_bit(DPC_SYSFS_DDB_EXPORT, &ha->dpc_flags)) {
5476                 if (qla4xxx_sysfs_ddb_export(ha))
5477                         ql4_printk(KERN_ERR, ha, "%s: Error exporting ddb to sysfs\n",
5478                                    __func__);
5479         }
5480 }
5481
5482 /**
5483  * qla4xxx_free_adapter - release the adapter
5484  * @ha: pointer to adapter structure
5485  **/
5486 static void qla4xxx_free_adapter(struct scsi_qla_host *ha)
5487 {
5488         qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
5489
5490         /* Turn-off interrupts on the card. */
5491         ha->isp_ops->disable_intrs(ha);
5492
5493         if (is_qla40XX(ha)) {
5494                 writel(set_rmask(CSR_SCSI_PROCESSOR_INTR),
5495                        &ha->reg->ctrl_status);
5496                 readl(&ha->reg->ctrl_status);
5497         } else if (is_qla8022(ha)) {
5498                 writel(0, &ha->qla4_82xx_reg->host_int);
5499                 readl(&ha->qla4_82xx_reg->host_int);
5500         } else if (is_qla8032(ha) || is_qla8042(ha)) {
5501                 writel(0, &ha->qla4_83xx_reg->risc_intr);
5502                 readl(&ha->qla4_83xx_reg->risc_intr);
5503         }
5504
5505         /* Remove timer thread, if present */
5506         if (ha->timer_active)
5507                 qla4xxx_stop_timer(ha);
5508
5509         /* Kill the kernel thread for this host */
5510         if (ha->dpc_thread)
5511                 destroy_workqueue(ha->dpc_thread);
5512
5513         /* Kill the kernel thread for this host */
5514         if (ha->task_wq)
5515                 destroy_workqueue(ha->task_wq);
5516
5517         /* Put firmware in known state */
5518         ha->isp_ops->reset_firmware(ha);
5519
5520         if (is_qla80XX(ha)) {
5521                 ha->isp_ops->idc_lock(ha);
5522                 qla4_8xxx_clear_drv_active(ha);
5523                 ha->isp_ops->idc_unlock(ha);
5524         }
5525
5526         /* Detach interrupts */
5527         qla4xxx_free_irqs(ha);
5528
5529         /* free extra memory */
5530         qla4xxx_mem_free(ha);
5531 }
5532
5533 int qla4_8xxx_iospace_config(struct scsi_qla_host *ha)
5534 {
5535         int status = 0;
5536         unsigned long mem_base, mem_len;
5537         struct pci_dev *pdev = ha->pdev;
5538
5539         status = pci_request_regions(pdev, DRIVER_NAME);
5540         if (status) {
5541                 printk(KERN_WARNING
5542                     "scsi(%ld) Failed to reserve PIO regions (%s) "
5543                     "status=%d\n", ha->host_no, pci_name(pdev), status);
5544                 goto iospace_error_exit;
5545         }
5546
5547         DEBUG2(printk(KERN_INFO "%s: revision-id=%d\n",
5548             __func__, pdev->revision));
5549         ha->revision_id = pdev->revision;
5550
5551         /* remap phys address */
5552         mem_base = pci_resource_start(pdev, 0); /* 0 is for BAR 0 */
5553         mem_len = pci_resource_len(pdev, 0);
5554         DEBUG2(printk(KERN_INFO "%s: ioremap from %lx a size of %lx\n",
5555             __func__, mem_base, mem_len));
5556
5557         /* mapping of pcibase pointer */
5558         ha->nx_pcibase = (unsigned long)ioremap(mem_base, mem_len);
5559         if (!ha->nx_pcibase) {
5560                 printk(KERN_ERR
5561                     "cannot remap MMIO (%s), aborting\n", pci_name(pdev));
5562                 pci_release_regions(ha->pdev);
5563                 goto iospace_error_exit;
5564         }
5565
5566         /* Mapping of IO base pointer, door bell read and write pointer */
5567
5568         /* mapping of IO base pointer */
5569         if (is_qla8022(ha)) {
5570                 ha->qla4_82xx_reg = (struct device_reg_82xx  __iomem *)
5571                                     ((uint8_t *)ha->nx_pcibase + 0xbc000 +
5572                                      (ha->pdev->devfn << 11));
5573                 ha->nx_db_wr_ptr = (ha->pdev->devfn == 4 ? QLA82XX_CAM_RAM_DB1 :
5574                                     QLA82XX_CAM_RAM_DB2);
5575         } else if (is_qla8032(ha) || is_qla8042(ha)) {
5576                 ha->qla4_83xx_reg = (struct device_reg_83xx __iomem *)
5577                                     ((uint8_t *)ha->nx_pcibase);
5578         }
5579
5580         return 0;
5581 iospace_error_exit:
5582         return -ENOMEM;
5583 }
5584
5585 /***
5586  * qla4xxx_iospace_config - maps registers
5587  * @ha: pointer to adapter structure
5588  *
5589  * This routines maps HBA's registers from the pci address space
5590  * into the kernel virtual address space for memory mapped i/o.
5591  **/
5592 int qla4xxx_iospace_config(struct scsi_qla_host *ha)
5593 {
5594         unsigned long pio, pio_len, pio_flags;
5595         unsigned long mmio, mmio_len, mmio_flags;
5596
5597         pio = pci_resource_start(ha->pdev, 0);
5598         pio_len = pci_resource_len(ha->pdev, 0);
5599         pio_flags = pci_resource_flags(ha->pdev, 0);
5600         if (pio_flags & IORESOURCE_IO) {
5601                 if (pio_len < MIN_IOBASE_LEN) {
5602                         ql4_printk(KERN_WARNING, ha,
5603                                 "Invalid PCI I/O region size\n");
5604                         pio = 0;
5605                 }
5606         } else {
5607                 ql4_printk(KERN_WARNING, ha, "region #0 not a PIO resource\n");
5608                 pio = 0;
5609         }
5610
5611         /* Use MMIO operations for all accesses. */
5612         mmio = pci_resource_start(ha->pdev, 1);
5613         mmio_len = pci_resource_len(ha->pdev, 1);
5614         mmio_flags = pci_resource_flags(ha->pdev, 1);
5615
5616         if (!(mmio_flags & IORESOURCE_MEM)) {
5617                 ql4_printk(KERN_ERR, ha,
5618                     "region #0 not an MMIO resource, aborting\n");
5619
5620                 goto iospace_error_exit;
5621         }
5622
5623         if (mmio_len < MIN_IOBASE_LEN) {
5624                 ql4_printk(KERN_ERR, ha,
5625                     "Invalid PCI mem region size, aborting\n");
5626                 goto iospace_error_exit;
5627         }
5628
5629         if (pci_request_regions(ha->pdev, DRIVER_NAME)) {
5630                 ql4_printk(KERN_WARNING, ha,
5631                     "Failed to reserve PIO/MMIO regions\n");
5632
5633                 goto iospace_error_exit;
5634         }
5635
5636         ha->pio_address = pio;
5637         ha->pio_length = pio_len;
5638         ha->reg = ioremap(mmio, MIN_IOBASE_LEN);
5639         if (!ha->reg) {
5640                 ql4_printk(KERN_ERR, ha,
5641                     "cannot remap MMIO, aborting\n");
5642
5643                 goto iospace_error_exit;
5644         }
5645
5646         return 0;
5647
5648 iospace_error_exit:
5649         return -ENOMEM;
5650 }
5651
5652 static struct isp_operations qla4xxx_isp_ops = {
5653         .iospace_config         = qla4xxx_iospace_config,
5654         .pci_config             = qla4xxx_pci_config,
5655         .disable_intrs          = qla4xxx_disable_intrs,
5656         .enable_intrs           = qla4xxx_enable_intrs,
5657         .start_firmware         = qla4xxx_start_firmware,
5658         .intr_handler           = qla4xxx_intr_handler,
5659         .interrupt_service_routine = qla4xxx_interrupt_service_routine,
5660         .reset_chip             = qla4xxx_soft_reset,
5661         .reset_firmware         = qla4xxx_hw_reset,
5662         .queue_iocb             = qla4xxx_queue_iocb,
5663         .complete_iocb          = qla4xxx_complete_iocb,
5664         .rd_shdw_req_q_out      = qla4xxx_rd_shdw_req_q_out,
5665         .rd_shdw_rsp_q_in       = qla4xxx_rd_shdw_rsp_q_in,
5666         .get_sys_info           = qla4xxx_get_sys_info,
5667         .queue_mailbox_command  = qla4xxx_queue_mbox_cmd,
5668         .process_mailbox_interrupt = qla4xxx_process_mbox_intr,
5669 };
5670
5671 static struct isp_operations qla4_82xx_isp_ops = {
5672         .iospace_config         = qla4_8xxx_iospace_config,
5673         .pci_config             = qla4_8xxx_pci_config,
5674         .disable_intrs          = qla4_82xx_disable_intrs,
5675         .enable_intrs           = qla4_82xx_enable_intrs,
5676         .start_firmware         = qla4_8xxx_load_risc,
5677         .restart_firmware       = qla4_82xx_try_start_fw,
5678         .intr_handler           = qla4_82xx_intr_handler,
5679         .interrupt_service_routine = qla4_82xx_interrupt_service_routine,
5680         .need_reset             = qla4_8xxx_need_reset,
5681         .reset_chip             = qla4_82xx_isp_reset,
5682         .reset_firmware         = qla4_8xxx_stop_firmware,
5683         .queue_iocb             = qla4_82xx_queue_iocb,
5684         .complete_iocb          = qla4_82xx_complete_iocb,
5685         .rd_shdw_req_q_out      = qla4_82xx_rd_shdw_req_q_out,
5686         .rd_shdw_rsp_q_in       = qla4_82xx_rd_shdw_rsp_q_in,
5687         .get_sys_info           = qla4_8xxx_get_sys_info,
5688         .rd_reg_direct          = qla4_82xx_rd_32,
5689         .wr_reg_direct          = qla4_82xx_wr_32,
5690         .rd_reg_indirect        = qla4_82xx_md_rd_32,
5691         .wr_reg_indirect        = qla4_82xx_md_wr_32,
5692         .idc_lock               = qla4_82xx_idc_lock,
5693         .idc_unlock             = qla4_82xx_idc_unlock,
5694         .rom_lock_recovery      = qla4_82xx_rom_lock_recovery,
5695         .queue_mailbox_command  = qla4_82xx_queue_mbox_cmd,
5696         .process_mailbox_interrupt = qla4_82xx_process_mbox_intr,
5697 };
5698
5699 static struct isp_operations qla4_83xx_isp_ops = {
5700         .iospace_config         = qla4_8xxx_iospace_config,
5701         .pci_config             = qla4_8xxx_pci_config,
5702         .disable_intrs          = qla4_83xx_disable_intrs,
5703         .enable_intrs           = qla4_83xx_enable_intrs,
5704         .start_firmware         = qla4_8xxx_load_risc,
5705         .restart_firmware       = qla4_83xx_start_firmware,
5706         .intr_handler           = qla4_83xx_intr_handler,
5707         .interrupt_service_routine = qla4_83xx_interrupt_service_routine,
5708         .need_reset             = qla4_8xxx_need_reset,
5709         .reset_chip             = qla4_83xx_isp_reset,
5710         .reset_firmware         = qla4_8xxx_stop_firmware,
5711         .queue_iocb             = qla4_83xx_queue_iocb,
5712         .complete_iocb          = qla4_83xx_complete_iocb,
5713         .rd_shdw_req_q_out      = qla4xxx_rd_shdw_req_q_out,
5714         .rd_shdw_rsp_q_in       = qla4xxx_rd_shdw_rsp_q_in,
5715         .get_sys_info           = qla4_8xxx_get_sys_info,
5716         .rd_reg_direct          = qla4_83xx_rd_reg,
5717         .wr_reg_direct          = qla4_83xx_wr_reg,
5718         .rd_reg_indirect        = qla4_83xx_rd_reg_indirect,
5719         .wr_reg_indirect        = qla4_83xx_wr_reg_indirect,
5720         .idc_lock               = qla4_83xx_drv_lock,
5721         .idc_unlock             = qla4_83xx_drv_unlock,
5722         .rom_lock_recovery      = qla4_83xx_rom_lock_recovery,
5723         .queue_mailbox_command  = qla4_83xx_queue_mbox_cmd,
5724         .process_mailbox_interrupt = qla4_83xx_process_mbox_intr,
5725 };
5726
5727 uint16_t qla4xxx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
5728 {
5729         return (uint16_t)le32_to_cpu(ha->shadow_regs->req_q_out);
5730 }
5731
5732 uint16_t qla4_82xx_rd_shdw_req_q_out(struct scsi_qla_host *ha)
5733 {
5734         return (uint16_t)le32_to_cpu(readl(&ha->qla4_82xx_reg->req_q_out));
5735 }
5736
5737 uint16_t qla4xxx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
5738 {
5739         return (uint16_t)le32_to_cpu(ha->shadow_regs->rsp_q_in);
5740 }
5741
5742 uint16_t qla4_82xx_rd_shdw_rsp_q_in(struct scsi_qla_host *ha)
5743 {
5744         return (uint16_t)le32_to_cpu(readl(&ha->qla4_82xx_reg->rsp_q_in));
5745 }
5746
5747 static ssize_t qla4xxx_show_boot_eth_info(void *data, int type, char *buf)
5748 {
5749         struct scsi_qla_host *ha = data;
5750         char *str = buf;
5751         int rc;
5752
5753         switch (type) {
5754         case ISCSI_BOOT_ETH_FLAGS:
5755                 rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
5756                 break;
5757         case ISCSI_BOOT_ETH_INDEX:
5758                 rc = sprintf(str, "0\n");
5759                 break;
5760         case ISCSI_BOOT_ETH_MAC:
5761                 rc = sysfs_format_mac(str, ha->my_mac,
5762                                       MAC_ADDR_LEN);
5763                 break;
5764         default:
5765                 rc = -ENOSYS;
5766                 break;
5767         }
5768         return rc;
5769 }
5770
5771 static umode_t qla4xxx_eth_get_attr_visibility(void *data, int type)
5772 {
5773         int rc;
5774
5775         switch (type) {
5776         case ISCSI_BOOT_ETH_FLAGS:
5777         case ISCSI_BOOT_ETH_MAC:
5778         case ISCSI_BOOT_ETH_INDEX:
5779                 rc = S_IRUGO;
5780                 break;
5781         default:
5782                 rc = 0;
5783                 break;
5784         }
5785         return rc;
5786 }
5787
5788 static ssize_t qla4xxx_show_boot_ini_info(void *data, int type, char *buf)
5789 {
5790         struct scsi_qla_host *ha = data;
5791         char *str = buf;
5792         int rc;
5793
5794         switch (type) {
5795         case ISCSI_BOOT_INI_INITIATOR_NAME:
5796                 rc = sprintf(str, "%s\n", ha->name_string);
5797                 break;
5798         default:
5799                 rc = -ENOSYS;
5800                 break;
5801         }
5802         return rc;
5803 }
5804
5805 static umode_t qla4xxx_ini_get_attr_visibility(void *data, int type)
5806 {
5807         int rc;
5808
5809         switch (type) {
5810         case ISCSI_BOOT_INI_INITIATOR_NAME:
5811                 rc = S_IRUGO;
5812                 break;
5813         default:
5814                 rc = 0;
5815                 break;
5816         }
5817         return rc;
5818 }
5819
5820 static ssize_t
5821 qla4xxx_show_boot_tgt_info(struct ql4_boot_session_info *boot_sess, int type,
5822                            char *buf)
5823 {
5824         struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
5825         char *str = buf;
5826         int rc;
5827
5828         switch (type) {
5829         case ISCSI_BOOT_TGT_NAME:
5830                 rc = sprintf(buf, "%s\n", (char *)&boot_sess->target_name);
5831                 break;
5832         case ISCSI_BOOT_TGT_IP_ADDR:
5833                 if (boot_sess->conn_list[0].dest_ipaddr.ip_type == 0x1)
5834                         rc = sprintf(buf, "%pI4\n",
5835                                      &boot_conn->dest_ipaddr.ip_address);
5836                 else
5837                         rc = sprintf(str, "%pI6\n",
5838                                      &boot_conn->dest_ipaddr.ip_address);
5839                 break;
5840         case ISCSI_BOOT_TGT_PORT:
5841                         rc = sprintf(str, "%d\n", boot_conn->dest_port);
5842                 break;
5843         case ISCSI_BOOT_TGT_CHAP_NAME:
5844                 rc = sprintf(str,  "%.*s\n",
5845                              boot_conn->chap.target_chap_name_length,
5846                              (char *)&boot_conn->chap.target_chap_name);
5847                 break;
5848         case ISCSI_BOOT_TGT_CHAP_SECRET:
5849                 rc = sprintf(str,  "%.*s\n",
5850                              boot_conn->chap.target_secret_length,
5851                              (char *)&boot_conn->chap.target_secret);
5852                 break;
5853         case ISCSI_BOOT_TGT_REV_CHAP_NAME:
5854                 rc = sprintf(str,  "%.*s\n",
5855                              boot_conn->chap.intr_chap_name_length,
5856                              (char *)&boot_conn->chap.intr_chap_name);
5857                 break;
5858         case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
5859                 rc = sprintf(str,  "%.*s\n",
5860                              boot_conn->chap.intr_secret_length,
5861                              (char *)&boot_conn->chap.intr_secret);
5862                 break;
5863         case ISCSI_BOOT_TGT_FLAGS:
5864                 rc = sprintf(str, "%d\n", SYSFS_FLAG_FW_SEL_BOOT);
5865                 break;
5866         case ISCSI_BOOT_TGT_NIC_ASSOC:
5867                 rc = sprintf(str, "0\n");
5868                 break;
5869         default:
5870                 rc = -ENOSYS;
5871                 break;
5872         }
5873         return rc;
5874 }
5875
5876 static ssize_t qla4xxx_show_boot_tgt_pri_info(void *data, int type, char *buf)
5877 {
5878         struct scsi_qla_host *ha = data;
5879         struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_pri_sess);
5880
5881         return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
5882 }
5883
5884 static ssize_t qla4xxx_show_boot_tgt_sec_info(void *data, int type, char *buf)
5885 {
5886         struct scsi_qla_host *ha = data;
5887         struct ql4_boot_session_info *boot_sess = &(ha->boot_tgt.boot_sec_sess);
5888
5889         return qla4xxx_show_boot_tgt_info(boot_sess, type, buf);
5890 }
5891
5892 static umode_t qla4xxx_tgt_get_attr_visibility(void *data, int type)
5893 {
5894         int rc;
5895
5896         switch (type) {
5897         case ISCSI_BOOT_TGT_NAME:
5898         case ISCSI_BOOT_TGT_IP_ADDR:
5899         case ISCSI_BOOT_TGT_PORT:
5900         case ISCSI_BOOT_TGT_CHAP_NAME:
5901         case ISCSI_BOOT_TGT_CHAP_SECRET:
5902         case ISCSI_BOOT_TGT_REV_CHAP_NAME:
5903         case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
5904         case ISCSI_BOOT_TGT_NIC_ASSOC:
5905         case ISCSI_BOOT_TGT_FLAGS:
5906                 rc = S_IRUGO;
5907                 break;
5908         default:
5909                 rc = 0;
5910                 break;
5911         }
5912         return rc;
5913 }
5914
5915 static void qla4xxx_boot_release(void *data)
5916 {
5917         struct scsi_qla_host *ha = data;
5918
5919         scsi_host_put(ha->host);
5920 }
5921
5922 static int get_fw_boot_info(struct scsi_qla_host *ha, uint16_t ddb_index[])
5923 {
5924         dma_addr_t buf_dma;
5925         uint32_t addr, pri_addr, sec_addr;
5926         uint32_t offset;
5927         uint16_t func_num;
5928         uint8_t val;
5929         uint8_t *buf = NULL;
5930         size_t size = 13 * sizeof(uint8_t);
5931         int ret = QLA_SUCCESS;
5932
5933         func_num = PCI_FUNC(ha->pdev->devfn);
5934
5935         ql4_printk(KERN_INFO, ha, "%s: Get FW boot info for 0x%x func %d\n",
5936                    __func__, ha->pdev->device, func_num);
5937
5938         if (is_qla40XX(ha)) {
5939                 if (func_num == 1) {
5940                         addr = NVRAM_PORT0_BOOT_MODE;
5941                         pri_addr = NVRAM_PORT0_BOOT_PRI_TGT;
5942                         sec_addr = NVRAM_PORT0_BOOT_SEC_TGT;
5943                 } else if (func_num == 3) {
5944                         addr = NVRAM_PORT1_BOOT_MODE;
5945                         pri_addr = NVRAM_PORT1_BOOT_PRI_TGT;
5946                         sec_addr = NVRAM_PORT1_BOOT_SEC_TGT;
5947                 } else {
5948                         ret = QLA_ERROR;
5949                         goto exit_boot_info;
5950                 }
5951
5952                 /* Check Boot Mode */
5953                 val = rd_nvram_byte(ha, addr);
5954                 if (!(val & 0x07)) {
5955                         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Adapter boot "
5956                                           "options : 0x%x\n", __func__, val));
5957                         ret = QLA_ERROR;
5958                         goto exit_boot_info;
5959                 }
5960
5961                 /* get primary valid target index */
5962                 val = rd_nvram_byte(ha, pri_addr);
5963                 if (val & BIT_7)
5964                         ddb_index[0] = (val & 0x7f);
5965
5966                 /* get secondary valid target index */
5967                 val = rd_nvram_byte(ha, sec_addr);
5968                 if (val & BIT_7)
5969                         ddb_index[1] = (val & 0x7f);
5970                 goto exit_boot_info;
5971         } else if (is_qla80XX(ha)) {
5972                 buf = dma_alloc_coherent(&ha->pdev->dev, size,
5973                                          &buf_dma, GFP_KERNEL);
5974                 if (!buf) {
5975                         DEBUG2(ql4_printk(KERN_ERR, ha,
5976                                           "%s: Unable to allocate dma buffer\n",
5977                                            __func__));
5978                         ret = QLA_ERROR;
5979                         goto exit_boot_info;
5980                 }
5981
5982                 if (ha->port_num == 0)
5983                         offset = BOOT_PARAM_OFFSET_PORT0;
5984                 else if (ha->port_num == 1)
5985                         offset = BOOT_PARAM_OFFSET_PORT1;
5986                 else {
5987                         ret = QLA_ERROR;
5988                         goto exit_boot_info_free;
5989                 }
5990                 addr = FLASH_RAW_ACCESS_ADDR + (ha->hw.flt_iscsi_param * 4) +
5991                        offset;
5992                 if (qla4xxx_get_flash(ha, buf_dma, addr,
5993                                       13 * sizeof(uint8_t)) != QLA_SUCCESS) {
5994                         DEBUG2(ql4_printk(KERN_ERR, ha, "scsi%ld: %s: Get Flash"
5995                                           " failed\n", ha->host_no, __func__));
5996                         ret = QLA_ERROR;
5997                         goto exit_boot_info_free;
5998                 }
5999                 /* Check Boot Mode */
6000                 if (!(buf[1] & 0x07)) {
6001                         DEBUG2(ql4_printk(KERN_INFO, ha, "Firmware boot options"
6002                                           " : 0x%x\n", buf[1]));
6003                         ret = QLA_ERROR;
6004                         goto exit_boot_info_free;
6005                 }
6006
6007                 /* get primary valid target index */
6008                 if (buf[2] & BIT_7)
6009                         ddb_index[0] = buf[2] & 0x7f;
6010
6011                 /* get secondary valid target index */
6012                 if (buf[11] & BIT_7)
6013                         ddb_index[1] = buf[11] & 0x7f;
6014         } else {
6015                 ret = QLA_ERROR;
6016                 goto exit_boot_info;
6017         }
6018
6019         DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary target ID %d, Secondary"
6020                           " target ID %d\n", __func__, ddb_index[0],
6021                           ddb_index[1]));
6022
6023 exit_boot_info_free:
6024         dma_free_coherent(&ha->pdev->dev, size, buf, buf_dma);
6025 exit_boot_info:
6026         ha->pri_ddb_idx = ddb_index[0];
6027         ha->sec_ddb_idx = ddb_index[1];
6028         return ret;
6029 }
6030
6031 /**
6032  * qla4xxx_get_bidi_chap - Get a BIDI CHAP user and password
6033  * @ha: pointer to adapter structure
6034  * @username: CHAP username to be returned
6035  * @password: CHAP password to be returned
6036  *
6037  * If a boot entry has BIDI CHAP enabled then we need to set the BIDI CHAP
6038  * user and password in the sysfs entry in /sys/firmware/iscsi_boot#/.
6039  * So from the CHAP cache find the first BIDI CHAP entry and set it
6040  * to the boot record in sysfs.
6041  **/
6042 static int qla4xxx_get_bidi_chap(struct scsi_qla_host *ha, char *username,
6043                             char *password)
6044 {
6045         int i, ret = -EINVAL;
6046         int max_chap_entries = 0;
6047         struct ql4_chap_table *chap_table;
6048
6049         if (is_qla80XX(ha))
6050                 max_chap_entries = (ha->hw.flt_chap_size / 2) /
6051                                                 sizeof(struct ql4_chap_table);
6052         else
6053                 max_chap_entries = MAX_CHAP_ENTRIES_40XX;
6054
6055         if (!ha->chap_list) {
6056                 ql4_printk(KERN_ERR, ha, "Do not have CHAP table cache\n");
6057                 return ret;
6058         }
6059
6060         mutex_lock(&ha->chap_sem);
6061         for (i = 0; i < max_chap_entries; i++) {
6062                 chap_table = (struct ql4_chap_table *)ha->chap_list + i;
6063                 if (chap_table->cookie !=
6064                     __constant_cpu_to_le16(CHAP_VALID_COOKIE)) {
6065                         continue;
6066                 }
6067
6068                 if (chap_table->flags & BIT_7) /* local */
6069                         continue;
6070
6071                 if (!(chap_table->flags & BIT_6)) /* Not BIDI */
6072                         continue;
6073
6074                 strlcpy(password, chap_table->secret, QL4_CHAP_MAX_SECRET_LEN);
6075                 strlcpy(username, chap_table->name, QL4_CHAP_MAX_NAME_LEN);
6076                 ret = 0;
6077                 break;
6078         }
6079         mutex_unlock(&ha->chap_sem);
6080
6081         return ret;
6082 }
6083
6084
6085 static int qla4xxx_get_boot_target(struct scsi_qla_host *ha,
6086                                    struct ql4_boot_session_info *boot_sess,
6087                                    uint16_t ddb_index)
6088 {
6089         struct ql4_conn_info *boot_conn = &boot_sess->conn_list[0];
6090         struct dev_db_entry *fw_ddb_entry;
6091         dma_addr_t fw_ddb_entry_dma;
6092         uint16_t idx;
6093         uint16_t options;
6094         int ret = QLA_SUCCESS;
6095
6096         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
6097                                           &fw_ddb_entry_dma, GFP_KERNEL);
6098         if (!fw_ddb_entry) {
6099                 DEBUG2(ql4_printk(KERN_ERR, ha,
6100                                   "%s: Unable to allocate dma buffer.\n",
6101                                   __func__));
6102                 ret = QLA_ERROR;
6103                 return ret;
6104         }
6105
6106         if (qla4xxx_bootdb_by_index(ha, fw_ddb_entry,
6107                                    fw_ddb_entry_dma, ddb_index)) {
6108                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: No Flash DDB found at "
6109                                   "index [%d]\n", __func__, ddb_index));
6110                 ret = QLA_ERROR;
6111                 goto exit_boot_target;
6112         }
6113
6114         /* Update target name and IP from DDB */
6115         memcpy(boot_sess->target_name, fw_ddb_entry->iscsi_name,
6116                min(sizeof(boot_sess->target_name),
6117                    sizeof(fw_ddb_entry->iscsi_name)));
6118
6119         options = le16_to_cpu(fw_ddb_entry->options);
6120         if (options & DDB_OPT_IPV6_DEVICE) {
6121                 memcpy(&boot_conn->dest_ipaddr.ip_address,
6122                        &fw_ddb_entry->ip_addr[0], IPv6_ADDR_LEN);
6123         } else {
6124                 boot_conn->dest_ipaddr.ip_type = 0x1;
6125                 memcpy(&boot_conn->dest_ipaddr.ip_address,
6126                        &fw_ddb_entry->ip_addr[0], IP_ADDR_LEN);
6127         }
6128
6129         boot_conn->dest_port = le16_to_cpu(fw_ddb_entry->port);
6130
6131         /* update chap information */
6132         idx = __le16_to_cpu(fw_ddb_entry->chap_tbl_idx);
6133
6134         if (BIT_7 & le16_to_cpu(fw_ddb_entry->iscsi_options))   {
6135
6136                 DEBUG2(ql4_printk(KERN_INFO, ha, "Setting chap\n"));
6137
6138                 ret = qla4xxx_get_chap(ha, (char *)&boot_conn->chap.
6139                                        target_chap_name,
6140                                        (char *)&boot_conn->chap.target_secret,
6141                                        idx);
6142                 if (ret) {
6143                         ql4_printk(KERN_ERR, ha, "Failed to set chap\n");
6144                         ret = QLA_ERROR;
6145                         goto exit_boot_target;
6146                 }
6147
6148                 boot_conn->chap.target_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
6149                 boot_conn->chap.target_secret_length = QL4_CHAP_MAX_SECRET_LEN;
6150         }
6151
6152         if (BIT_4 & le16_to_cpu(fw_ddb_entry->iscsi_options)) {
6153
6154                 DEBUG2(ql4_printk(KERN_INFO, ha, "Setting BIDI chap\n"));
6155
6156                 ret = qla4xxx_get_bidi_chap(ha,
6157                                     (char *)&boot_conn->chap.intr_chap_name,
6158                                     (char *)&boot_conn->chap.intr_secret);
6159
6160                 if (ret) {
6161                         ql4_printk(KERN_ERR, ha, "Failed to set BIDI chap\n");
6162                         ret = QLA_ERROR;
6163                         goto exit_boot_target;
6164                 }
6165
6166                 boot_conn->chap.intr_chap_name_length = QL4_CHAP_MAX_NAME_LEN;
6167                 boot_conn->chap.intr_secret_length = QL4_CHAP_MAX_SECRET_LEN;
6168         }
6169
6170 exit_boot_target:
6171         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
6172                           fw_ddb_entry, fw_ddb_entry_dma);
6173         return ret;
6174 }
6175
6176 static int qla4xxx_get_boot_info(struct scsi_qla_host *ha)
6177 {
6178         uint16_t ddb_index[2];
6179         int ret = QLA_ERROR;
6180         int rval;
6181
6182         memset(ddb_index, 0, sizeof(ddb_index));
6183         ddb_index[0] = 0xffff;
6184         ddb_index[1] = 0xffff;
6185         ret = get_fw_boot_info(ha, ddb_index);
6186         if (ret != QLA_SUCCESS) {
6187                 DEBUG2(ql4_printk(KERN_INFO, ha,
6188                                 "%s: No boot target configured.\n", __func__));
6189                 return ret;
6190         }
6191
6192         if (ql4xdisablesysfsboot)
6193                 return QLA_SUCCESS;
6194
6195         if (ddb_index[0] == 0xffff)
6196                 goto sec_target;
6197
6198         rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_pri_sess),
6199                                       ddb_index[0]);
6200         if (rval != QLA_SUCCESS) {
6201                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Primary boot target not "
6202                                   "configured\n", __func__));
6203         } else
6204                 ret = QLA_SUCCESS;
6205
6206 sec_target:
6207         if (ddb_index[1] == 0xffff)
6208                 goto exit_get_boot_info;
6209
6210         rval = qla4xxx_get_boot_target(ha, &(ha->boot_tgt.boot_sec_sess),
6211                                       ddb_index[1]);
6212         if (rval != QLA_SUCCESS) {
6213                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Secondary boot target not"
6214                                   " configured\n", __func__));
6215         } else
6216                 ret = QLA_SUCCESS;
6217
6218 exit_get_boot_info:
6219         return ret;
6220 }
6221
6222 static int qla4xxx_setup_boot_info(struct scsi_qla_host *ha)
6223 {
6224         struct iscsi_boot_kobj *boot_kobj;
6225
6226         if (qla4xxx_get_boot_info(ha) != QLA_SUCCESS)
6227                 return QLA_ERROR;
6228
6229         if (ql4xdisablesysfsboot) {
6230                 ql4_printk(KERN_INFO, ha,
6231                            "%s: syfsboot disabled - driver will trigger login "
6232                            "and publish session for discovery .\n", __func__);
6233                 return QLA_SUCCESS;
6234         }
6235
6236
6237         ha->boot_kset = iscsi_boot_create_host_kset(ha->host->host_no);
6238         if (!ha->boot_kset)
6239                 goto kset_free;
6240
6241         if (!scsi_host_get(ha->host))
6242                 goto kset_free;
6243         boot_kobj = iscsi_boot_create_target(ha->boot_kset, 0, ha,
6244                                              qla4xxx_show_boot_tgt_pri_info,
6245                                              qla4xxx_tgt_get_attr_visibility,
6246                                              qla4xxx_boot_release);
6247         if (!boot_kobj)
6248                 goto put_host;
6249
6250         if (!scsi_host_get(ha->host))
6251                 goto kset_free;
6252         boot_kobj = iscsi_boot_create_target(ha->boot_kset, 1, ha,
6253                                              qla4xxx_show_boot_tgt_sec_info,
6254                                              qla4xxx_tgt_get_attr_visibility,
6255                                              qla4xxx_boot_release);
6256         if (!boot_kobj)
6257                 goto put_host;
6258
6259         if (!scsi_host_get(ha->host))
6260                 goto kset_free;
6261         boot_kobj = iscsi_boot_create_initiator(ha->boot_kset, 0, ha,
6262                                                qla4xxx_show_boot_ini_info,
6263                                                qla4xxx_ini_get_attr_visibility,
6264                                                qla4xxx_boot_release);
6265         if (!boot_kobj)
6266                 goto put_host;
6267
6268         if (!scsi_host_get(ha->host))
6269                 goto kset_free;
6270         boot_kobj = iscsi_boot_create_ethernet(ha->boot_kset, 0, ha,
6271                                                qla4xxx_show_boot_eth_info,
6272                                                qla4xxx_eth_get_attr_visibility,
6273                                                qla4xxx_boot_release);
6274         if (!boot_kobj)
6275                 goto put_host;
6276
6277         return QLA_SUCCESS;
6278
6279 put_host:
6280         scsi_host_put(ha->host);
6281 kset_free:
6282         iscsi_boot_destroy_kset(ha->boot_kset);
6283         return -ENOMEM;
6284 }
6285
6286
6287 static void qla4xxx_get_param_ddb(struct ddb_entry *ddb_entry,
6288                                   struct ql4_tuple_ddb *tddb)
6289 {
6290         struct iscsi_cls_session *cls_sess;
6291         struct iscsi_cls_conn *cls_conn;
6292         struct iscsi_session *sess;
6293         struct iscsi_conn *conn;
6294
6295         DEBUG2(printk(KERN_INFO "Func: %s\n", __func__));
6296         cls_sess = ddb_entry->sess;
6297         sess = cls_sess->dd_data;
6298         cls_conn = ddb_entry->conn;
6299         conn = cls_conn->dd_data;
6300
6301         tddb->tpgt = sess->tpgt;
6302         tddb->port = conn->persistent_port;
6303         strlcpy(tddb->iscsi_name, sess->targetname, ISCSI_NAME_SIZE);
6304         strlcpy(tddb->ip_addr, conn->persistent_address, DDB_IPADDR_LEN);
6305 }
6306
6307 static void qla4xxx_convert_param_ddb(struct dev_db_entry *fw_ddb_entry,
6308                                       struct ql4_tuple_ddb *tddb,
6309                                       uint8_t *flash_isid)
6310 {
6311         uint16_t options = 0;
6312
6313         tddb->tpgt = le32_to_cpu(fw_ddb_entry->tgt_portal_grp);
6314         memcpy(&tddb->iscsi_name[0], &fw_ddb_entry->iscsi_name[0],
6315                min(sizeof(tddb->iscsi_name), sizeof(fw_ddb_entry->iscsi_name)));
6316
6317         options = le16_to_cpu(fw_ddb_entry->options);
6318         if (options & DDB_OPT_IPV6_DEVICE)
6319                 sprintf(tddb->ip_addr, "%pI6", fw_ddb_entry->ip_addr);
6320         else
6321                 sprintf(tddb->ip_addr, "%pI4", fw_ddb_entry->ip_addr);
6322
6323         tddb->port = le16_to_cpu(fw_ddb_entry->port);
6324
6325         if (flash_isid == NULL)
6326                 memcpy(&tddb->isid[0], &fw_ddb_entry->isid[0],
6327                        sizeof(tddb->isid));
6328         else
6329                 memcpy(&tddb->isid[0], &flash_isid[0], sizeof(tddb->isid));
6330 }
6331
6332 static int qla4xxx_compare_tuple_ddb(struct scsi_qla_host *ha,
6333                                      struct ql4_tuple_ddb *old_tddb,
6334                                      struct ql4_tuple_ddb *new_tddb,
6335                                      uint8_t is_isid_compare)
6336 {
6337         if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
6338                 return QLA_ERROR;
6339
6340         if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr))
6341                 return QLA_ERROR;
6342
6343         if (old_tddb->port != new_tddb->port)
6344                 return QLA_ERROR;
6345
6346         /* For multi sessions, driver generates the ISID, so do not compare
6347          * ISID in reset path since it would be a comparison between the
6348          * driver generated ISID and firmware generated ISID. This could
6349          * lead to adding duplicated DDBs in the list as driver generated
6350          * ISID would not match firmware generated ISID.
6351          */
6352         if (is_isid_compare) {
6353                 DEBUG2(ql4_printk(KERN_INFO, ha,
6354                         "%s: old ISID [%pmR] New ISID [%pmR]\n",
6355                         __func__, old_tddb->isid, new_tddb->isid));
6356
6357                 if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
6358                            sizeof(old_tddb->isid)))
6359                         return QLA_ERROR;
6360         }
6361
6362         DEBUG2(ql4_printk(KERN_INFO, ha,
6363                           "Match Found, fw[%d,%d,%s,%s], [%d,%d,%s,%s]",
6364                           old_tddb->port, old_tddb->tpgt, old_tddb->ip_addr,
6365                           old_tddb->iscsi_name, new_tddb->port, new_tddb->tpgt,
6366                           new_tddb->ip_addr, new_tddb->iscsi_name));
6367
6368         return QLA_SUCCESS;
6369 }
6370
6371 static int qla4xxx_is_session_exists(struct scsi_qla_host *ha,
6372                                      struct dev_db_entry *fw_ddb_entry,
6373                                      uint32_t *index)
6374 {
6375         struct ddb_entry *ddb_entry;
6376         struct ql4_tuple_ddb *fw_tddb = NULL;
6377         struct ql4_tuple_ddb *tmp_tddb = NULL;
6378         int idx;
6379         int ret = QLA_ERROR;
6380
6381         fw_tddb = vzalloc(sizeof(*fw_tddb));
6382         if (!fw_tddb) {
6383                 DEBUG2(ql4_printk(KERN_WARNING, ha,
6384                                   "Memory Allocation failed.\n"));
6385                 ret = QLA_SUCCESS;
6386                 goto exit_check;
6387         }
6388
6389         tmp_tddb = vzalloc(sizeof(*tmp_tddb));
6390         if (!tmp_tddb) {
6391                 DEBUG2(ql4_printk(KERN_WARNING, ha,
6392                                   "Memory Allocation failed.\n"));
6393                 ret = QLA_SUCCESS;
6394                 goto exit_check;
6395         }
6396
6397         qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);
6398
6399         for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
6400                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
6401                 if (ddb_entry == NULL)
6402                         continue;
6403
6404                 qla4xxx_get_param_ddb(ddb_entry, tmp_tddb);
6405                 if (!qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, false)) {
6406                         ret = QLA_SUCCESS; /* found */
6407                         if (index != NULL)
6408                                 *index = idx;
6409                         goto exit_check;
6410                 }
6411         }
6412
6413 exit_check:
6414         if (fw_tddb)
6415                 vfree(fw_tddb);
6416         if (tmp_tddb)
6417                 vfree(tmp_tddb);
6418         return ret;
6419 }
6420
6421 /**
6422  * qla4xxx_check_existing_isid - check if target with same isid exist
6423  *                               in target list
6424  * @list_nt: list of target
6425  * @isid: isid to check
6426  *
6427  * This routine return QLA_SUCCESS if target with same isid exist
6428  **/
6429 static int qla4xxx_check_existing_isid(struct list_head *list_nt, uint8_t *isid)
6430 {
6431         struct qla_ddb_index *nt_ddb_idx, *nt_ddb_idx_tmp;
6432         struct dev_db_entry *fw_ddb_entry;
6433
6434         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
6435                 fw_ddb_entry = &nt_ddb_idx->fw_ddb;
6436
6437                 if (memcmp(&fw_ddb_entry->isid[0], &isid[0],
6438                            sizeof(nt_ddb_idx->fw_ddb.isid)) == 0) {
6439                         return QLA_SUCCESS;
6440                 }
6441         }
6442         return QLA_ERROR;
6443 }
6444
6445 /**
6446  * qla4xxx_update_isid - compare ddbs and updated isid
6447  * @ha: Pointer to host adapter structure.
6448  * @list_nt: list of nt target
6449  * @fw_ddb_entry: firmware ddb entry
6450  *
6451  * This routine update isid if ddbs have same iqn, same isid and
6452  * different IP addr.
6453  * Return QLA_SUCCESS if isid is updated.
6454  **/
6455 static int qla4xxx_update_isid(struct scsi_qla_host *ha,
6456                                struct list_head *list_nt,
6457                                struct dev_db_entry *fw_ddb_entry)
6458 {
6459         uint8_t base_value, i;
6460
6461         base_value = fw_ddb_entry->isid[1] & 0x1f;
6462         for (i = 0; i < 8; i++) {
6463                 fw_ddb_entry->isid[1] = (base_value | (i << 5));
6464                 if (qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
6465                         break;
6466         }
6467
6468         if (!qla4xxx_check_existing_isid(list_nt, fw_ddb_entry->isid))
6469                 return QLA_ERROR;
6470
6471         return QLA_SUCCESS;
6472 }
6473
6474 /**
6475  * qla4xxx_should_update_isid - check if isid need to update
6476  * @ha: Pointer to host adapter structure.
6477  * @old_tddb: ddb tuple
6478  * @new_tddb: ddb tuple
6479  *
6480  * Return QLA_SUCCESS if different IP, different PORT, same iqn,
6481  * same isid
6482  **/
6483 static int qla4xxx_should_update_isid(struct scsi_qla_host *ha,
6484                                       struct ql4_tuple_ddb *old_tddb,
6485                                       struct ql4_tuple_ddb *new_tddb)
6486 {
6487         if (strcmp(old_tddb->ip_addr, new_tddb->ip_addr) == 0) {
6488                 /* Same ip */
6489                 if (old_tddb->port == new_tddb->port)
6490                         return QLA_ERROR;
6491         }
6492
6493         if (strcmp(old_tddb->iscsi_name, new_tddb->iscsi_name))
6494                 /* different iqn */
6495                 return QLA_ERROR;
6496
6497         if (memcmp(&old_tddb->isid[0], &new_tddb->isid[0],
6498                    sizeof(old_tddb->isid)))
6499                 /* different isid */
6500                 return QLA_ERROR;
6501
6502         return QLA_SUCCESS;
6503 }
6504
6505 /**
6506  * qla4xxx_is_flash_ddb_exists - check if fw_ddb_entry already exists in list_nt
6507  * @ha: Pointer to host adapter structure.
6508  * @list_nt: list of nt target.
6509  * @fw_ddb_entry: firmware ddb entry.
6510  *
6511  * This routine check if fw_ddb_entry already exists in list_nt to avoid
6512  * duplicate ddb in list_nt.
6513  * Return QLA_SUCCESS if duplicate ddb exit in list_nl.
6514  * Note: This function also update isid of DDB if required.
6515  **/
6516
6517 static int qla4xxx_is_flash_ddb_exists(struct scsi_qla_host *ha,
6518                                        struct list_head *list_nt,
6519                                        struct dev_db_entry *fw_ddb_entry)
6520 {
6521         struct qla_ddb_index  *nt_ddb_idx, *nt_ddb_idx_tmp;
6522         struct ql4_tuple_ddb *fw_tddb = NULL;
6523         struct ql4_tuple_ddb *tmp_tddb = NULL;
6524         int rval, ret = QLA_ERROR;
6525
6526         fw_tddb = vzalloc(sizeof(*fw_tddb));
6527         if (!fw_tddb) {
6528                 DEBUG2(ql4_printk(KERN_WARNING, ha,
6529                                   "Memory Allocation failed.\n"));
6530                 ret = QLA_SUCCESS;
6531                 goto exit_check;
6532         }
6533
6534         tmp_tddb = vzalloc(sizeof(*tmp_tddb));
6535         if (!tmp_tddb) {
6536                 DEBUG2(ql4_printk(KERN_WARNING, ha,
6537                                   "Memory Allocation failed.\n"));
6538                 ret = QLA_SUCCESS;
6539                 goto exit_check;
6540         }
6541
6542         qla4xxx_convert_param_ddb(fw_ddb_entry, fw_tddb, NULL);
6543
6544         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
6545                 qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb,
6546                                           nt_ddb_idx->flash_isid);
6547                 ret = qla4xxx_compare_tuple_ddb(ha, fw_tddb, tmp_tddb, true);
6548                 /* found duplicate ddb */
6549                 if (ret == QLA_SUCCESS)
6550                         goto exit_check;
6551         }
6552
6553         list_for_each_entry_safe(nt_ddb_idx, nt_ddb_idx_tmp, list_nt, list) {
6554                 qla4xxx_convert_param_ddb(&nt_ddb_idx->fw_ddb, tmp_tddb, NULL);
6555
6556                 ret = qla4xxx_should_update_isid(ha, tmp_tddb, fw_tddb);
6557                 if (ret == QLA_SUCCESS) {
6558                         rval = qla4xxx_update_isid(ha, list_nt, fw_ddb_entry);
6559                         if (rval == QLA_SUCCESS)
6560                                 ret = QLA_ERROR;
6561                         else
6562                                 ret = QLA_SUCCESS;
6563
6564                         goto exit_check;
6565                 }
6566         }
6567
6568 exit_check:
6569         if (fw_tddb)
6570                 vfree(fw_tddb);
6571         if (tmp_tddb)
6572                 vfree(tmp_tddb);
6573         return ret;
6574 }
6575
6576 static void qla4xxx_free_ddb_list(struct list_head *list_ddb)
6577 {
6578         struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
6579
6580         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
6581                 list_del_init(&ddb_idx->list);
6582                 vfree(ddb_idx);
6583         }
6584 }
6585
6586 static struct iscsi_endpoint *qla4xxx_get_ep_fwdb(struct scsi_qla_host *ha,
6587                                         struct dev_db_entry *fw_ddb_entry)
6588 {
6589         struct iscsi_endpoint *ep;
6590         struct sockaddr_in *addr;
6591         struct sockaddr_in6 *addr6;
6592         struct sockaddr *t_addr;
6593         struct sockaddr_storage *dst_addr;
6594         char *ip;
6595
6596         /* TODO: need to destroy on unload iscsi_endpoint*/
6597         dst_addr = vmalloc(sizeof(*dst_addr));
6598         if (!dst_addr)
6599                 return NULL;
6600
6601         if (fw_ddb_entry->options & DDB_OPT_IPV6_DEVICE) {
6602                 t_addr = (struct sockaddr *)dst_addr;
6603                 t_addr->sa_family = AF_INET6;
6604                 addr6 = (struct sockaddr_in6 *)dst_addr;
6605                 ip = (char *)&addr6->sin6_addr;
6606                 memcpy(ip, fw_ddb_entry->ip_addr, IPv6_ADDR_LEN);
6607                 addr6->sin6_port = htons(le16_to_cpu(fw_ddb_entry->port));
6608
6609         } else {
6610                 t_addr = (struct sockaddr *)dst_addr;
6611                 t_addr->sa_family = AF_INET;
6612                 addr = (struct sockaddr_in *)dst_addr;
6613                 ip = (char *)&addr->sin_addr;
6614                 memcpy(ip, fw_ddb_entry->ip_addr, IP_ADDR_LEN);
6615                 addr->sin_port = htons(le16_to_cpu(fw_ddb_entry->port));
6616         }
6617
6618         ep = qla4xxx_ep_connect(ha->host, (struct sockaddr *)dst_addr, 0);
6619         vfree(dst_addr);
6620         return ep;
6621 }
6622
6623 static int qla4xxx_verify_boot_idx(struct scsi_qla_host *ha, uint16_t idx)
6624 {
6625         if (ql4xdisablesysfsboot)
6626                 return QLA_SUCCESS;
6627         if (idx == ha->pri_ddb_idx || idx == ha->sec_ddb_idx)
6628                 return QLA_ERROR;
6629         return QLA_SUCCESS;
6630 }
6631
6632 static void qla4xxx_setup_flash_ddb_entry(struct scsi_qla_host *ha,
6633                                           struct ddb_entry *ddb_entry,
6634                                           uint16_t idx)
6635 {
6636         uint16_t def_timeout;
6637
6638         ddb_entry->ddb_type = FLASH_DDB;
6639         ddb_entry->fw_ddb_index = INVALID_ENTRY;
6640         ddb_entry->fw_ddb_device_state = DDB_DS_NO_CONNECTION_ACTIVE;
6641         ddb_entry->ha = ha;
6642         ddb_entry->unblock_sess = qla4xxx_unblock_flash_ddb;
6643         ddb_entry->ddb_change = qla4xxx_flash_ddb_change;
6644         ddb_entry->chap_tbl_idx = INVALID_ENTRY;
6645
6646         atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
6647         atomic_set(&ddb_entry->relogin_timer, 0);
6648         atomic_set(&ddb_entry->relogin_retry_count, 0);
6649         def_timeout = le16_to_cpu(ddb_entry->fw_ddb_entry.def_timeout);
6650         ddb_entry->default_relogin_timeout =
6651                 (def_timeout > LOGIN_TOV) && (def_timeout < LOGIN_TOV * 10) ?
6652                 def_timeout : LOGIN_TOV;
6653         ddb_entry->default_time2wait =
6654                 le16_to_cpu(ddb_entry->fw_ddb_entry.iscsi_def_time2wait);
6655
6656         if (ql4xdisablesysfsboot &&
6657             (idx == ha->pri_ddb_idx || idx == ha->sec_ddb_idx))
6658                 set_bit(DF_BOOT_TGT, &ddb_entry->flags);
6659 }
6660
6661 static void qla4xxx_wait_for_ip_configuration(struct scsi_qla_host *ha)
6662 {
6663         uint32_t idx = 0;
6664         uint32_t ip_idx[IP_ADDR_COUNT] = {0, 1, 2, 3}; /* 4 IP interfaces */
6665         uint32_t sts[MBOX_REG_COUNT];
6666         uint32_t ip_state;
6667         unsigned long wtime;
6668         int ret;
6669
6670         wtime = jiffies + (HZ * IP_CONFIG_TOV);
6671         do {
6672                 for (idx = 0; idx < IP_ADDR_COUNT; idx++) {
6673                         if (ip_idx[idx] == -1)
6674                                 continue;
6675
6676                         ret = qla4xxx_get_ip_state(ha, 0, ip_idx[idx], sts);
6677
6678                         if (ret == QLA_ERROR) {
6679                                 ip_idx[idx] = -1;
6680                                 continue;
6681                         }
6682
6683                         ip_state = (sts[1] & IP_STATE_MASK) >> IP_STATE_SHIFT;
6684
6685                         DEBUG2(ql4_printk(KERN_INFO, ha,
6686                                           "Waiting for IP state for idx = %d, state = 0x%x\n",
6687                                           ip_idx[idx], ip_state));
6688                         if (ip_state == IP_ADDRSTATE_UNCONFIGURED ||
6689                             ip_state == IP_ADDRSTATE_INVALID ||
6690                             ip_state == IP_ADDRSTATE_PREFERRED ||
6691                             ip_state == IP_ADDRSTATE_DEPRICATED ||
6692                             ip_state == IP_ADDRSTATE_DISABLING)
6693                                 ip_idx[idx] = -1;
6694                 }
6695
6696                 /* Break if all IP states checked */
6697                 if ((ip_idx[0] == -1) &&
6698                     (ip_idx[1] == -1) &&
6699                     (ip_idx[2] == -1) &&
6700                     (ip_idx[3] == -1))
6701                         break;
6702                 schedule_timeout_uninterruptible(HZ);
6703         } while (time_after(wtime, jiffies));
6704 }
6705
6706 static int qla4xxx_cmp_fw_stentry(struct dev_db_entry *fw_ddb_entry,
6707                                   struct dev_db_entry *flash_ddb_entry)
6708 {
6709         uint16_t options = 0;
6710         size_t ip_len = IP_ADDR_LEN;
6711
6712         options = le16_to_cpu(fw_ddb_entry->options);
6713         if (options & DDB_OPT_IPV6_DEVICE)
6714                 ip_len = IPv6_ADDR_LEN;
6715
6716         if (memcmp(fw_ddb_entry->ip_addr, flash_ddb_entry->ip_addr, ip_len))
6717                 return QLA_ERROR;
6718
6719         if (memcmp(&fw_ddb_entry->isid[0], &flash_ddb_entry->isid[0],
6720                    sizeof(fw_ddb_entry->isid)))
6721                 return QLA_ERROR;
6722
6723         if (memcmp(&fw_ddb_entry->port, &flash_ddb_entry->port,
6724                    sizeof(fw_ddb_entry->port)))
6725                 return QLA_ERROR;
6726
6727         return QLA_SUCCESS;
6728 }
6729
6730 static int qla4xxx_find_flash_st_idx(struct scsi_qla_host *ha,
6731                                      struct dev_db_entry *fw_ddb_entry,
6732                                      uint32_t fw_idx, uint32_t *flash_index)
6733 {
6734         struct dev_db_entry *flash_ddb_entry;
6735         dma_addr_t flash_ddb_entry_dma;
6736         uint32_t idx = 0;
6737         int max_ddbs;
6738         int ret = QLA_ERROR, status;
6739
6740         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
6741                                      MAX_DEV_DB_ENTRIES;
6742
6743         flash_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
6744                                          &flash_ddb_entry_dma);
6745         if (flash_ddb_entry == NULL || fw_ddb_entry == NULL) {
6746                 ql4_printk(KERN_ERR, ha, "Out of memory\n");
6747                 goto exit_find_st_idx;
6748         }
6749
6750         status = qla4xxx_flashdb_by_index(ha, flash_ddb_entry,
6751                                           flash_ddb_entry_dma, fw_idx);
6752         if (status == QLA_SUCCESS) {
6753                 status = qla4xxx_cmp_fw_stentry(fw_ddb_entry, flash_ddb_entry);
6754                 if (status == QLA_SUCCESS) {
6755                         *flash_index = fw_idx;
6756                         ret = QLA_SUCCESS;
6757                         goto exit_find_st_idx;
6758                 }
6759         }
6760
6761         for (idx = 0; idx < max_ddbs; idx++) {
6762                 status = qla4xxx_flashdb_by_index(ha, flash_ddb_entry,
6763                                                   flash_ddb_entry_dma, idx);
6764                 if (status == QLA_ERROR)
6765                         continue;
6766
6767                 status = qla4xxx_cmp_fw_stentry(fw_ddb_entry, flash_ddb_entry);
6768                 if (status == QLA_SUCCESS) {
6769                         *flash_index = idx;
6770                         ret = QLA_SUCCESS;
6771                         goto exit_find_st_idx;
6772                 }
6773         }
6774
6775         if (idx == max_ddbs)
6776                 ql4_printk(KERN_ERR, ha, "Failed to find ST [%d] in flash\n",
6777                            fw_idx);
6778
6779 exit_find_st_idx:
6780         if (flash_ddb_entry)
6781                 dma_pool_free(ha->fw_ddb_dma_pool, flash_ddb_entry,
6782                               flash_ddb_entry_dma);
6783
6784         return ret;
6785 }
6786
6787 static void qla4xxx_build_st_list(struct scsi_qla_host *ha,
6788                                   struct list_head *list_st)
6789 {
6790         struct qla_ddb_index  *st_ddb_idx;
6791         int max_ddbs;
6792         int fw_idx_size;
6793         struct dev_db_entry *fw_ddb_entry;
6794         dma_addr_t fw_ddb_dma;
6795         int ret;
6796         uint32_t idx = 0, next_idx = 0;
6797         uint32_t state = 0, conn_err = 0;
6798         uint32_t flash_index = -1;
6799         uint16_t conn_id = 0;
6800
6801         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
6802                                       &fw_ddb_dma);
6803         if (fw_ddb_entry == NULL) {
6804                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
6805                 goto exit_st_list;
6806         }
6807
6808         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
6809                                      MAX_DEV_DB_ENTRIES;
6810         fw_idx_size = sizeof(struct qla_ddb_index);
6811
6812         for (idx = 0; idx < max_ddbs; idx = next_idx) {
6813                 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
6814                                               NULL, &next_idx, &state,
6815                                               &conn_err, NULL, &conn_id);
6816                 if (ret == QLA_ERROR)
6817                         break;
6818
6819                 /* Ignore DDB if invalid state (unassigned) */
6820                 if (state == DDB_DS_UNASSIGNED)
6821                         goto continue_next_st;
6822
6823                 /* Check if ST, add to the list_st */
6824                 if (strlen((char *) fw_ddb_entry->iscsi_name) != 0)
6825                         goto continue_next_st;
6826
6827                 st_ddb_idx = vzalloc(fw_idx_size);
6828                 if (!st_ddb_idx)
6829                         break;
6830
6831                 ret = qla4xxx_find_flash_st_idx(ha, fw_ddb_entry, idx,
6832                                                 &flash_index);
6833                 if (ret == QLA_ERROR) {
6834                         ql4_printk(KERN_ERR, ha,
6835                                    "No flash entry for ST at idx [%d]\n", idx);
6836                         st_ddb_idx->flash_ddb_idx = idx;
6837                 } else {
6838                         ql4_printk(KERN_INFO, ha,
6839                                    "ST at idx [%d] is stored at flash [%d]\n",
6840                                    idx, flash_index);
6841                         st_ddb_idx->flash_ddb_idx = flash_index;
6842                 }
6843
6844                 st_ddb_idx->fw_ddb_idx = idx;
6845
6846                 list_add_tail(&st_ddb_idx->list, list_st);
6847 continue_next_st:
6848                 if (next_idx == 0)
6849                         break;
6850         }
6851
6852 exit_st_list:
6853         if (fw_ddb_entry)
6854                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
6855 }
6856
6857 /**
6858  * qla4xxx_remove_failed_ddb - Remove inactive or failed ddb from list
6859  * @ha: pointer to adapter structure
6860  * @list_ddb: List from which failed ddb to be removed
6861  *
6862  * Iterate over the list of DDBs and find and remove DDBs that are either in
6863  * no connection active state or failed state
6864  **/
6865 static void qla4xxx_remove_failed_ddb(struct scsi_qla_host *ha,
6866                                       struct list_head *list_ddb)
6867 {
6868         struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
6869         uint32_t next_idx = 0;
6870         uint32_t state = 0, conn_err = 0;
6871         int ret;
6872
6873         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
6874                 ret = qla4xxx_get_fwddb_entry(ha, ddb_idx->fw_ddb_idx,
6875                                               NULL, 0, NULL, &next_idx, &state,
6876                                               &conn_err, NULL, NULL);
6877                 if (ret == QLA_ERROR)
6878                         continue;
6879
6880                 if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
6881                     state == DDB_DS_SESSION_FAILED) {
6882                         list_del_init(&ddb_idx->list);
6883                         vfree(ddb_idx);
6884                 }
6885         }
6886 }
6887
6888 static void qla4xxx_update_sess_disc_idx(struct scsi_qla_host *ha,
6889                                          struct ddb_entry *ddb_entry,
6890                                          struct dev_db_entry *fw_ddb_entry)
6891 {
6892         struct iscsi_cls_session *cls_sess;
6893         struct iscsi_session *sess;
6894         uint32_t max_ddbs = 0;
6895         uint16_t ddb_link = -1;
6896
6897         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
6898                                      MAX_DEV_DB_ENTRIES;
6899
6900         cls_sess = ddb_entry->sess;
6901         sess = cls_sess->dd_data;
6902
6903         ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
6904         if (ddb_link < max_ddbs)
6905                 sess->discovery_parent_idx = ddb_link;
6906         else
6907                 sess->discovery_parent_idx = DDB_NO_LINK;
6908 }
6909
6910 static int qla4xxx_sess_conn_setup(struct scsi_qla_host *ha,
6911                                    struct dev_db_entry *fw_ddb_entry,
6912                                    int is_reset, uint16_t idx)
6913 {
6914         struct iscsi_cls_session *cls_sess;
6915         struct iscsi_session *sess;
6916         struct iscsi_cls_conn *cls_conn;
6917         struct iscsi_endpoint *ep;
6918         uint16_t cmds_max = 32;
6919         uint16_t conn_id = 0;
6920         uint32_t initial_cmdsn = 0;
6921         int ret = QLA_SUCCESS;
6922
6923         struct ddb_entry *ddb_entry = NULL;
6924
6925         /* Create session object, with INVALID_ENTRY,
6926          * the targer_id would get set when we issue the login
6927          */
6928         cls_sess = iscsi_session_setup(&qla4xxx_iscsi_transport, ha->host,
6929                                        cmds_max, sizeof(struct ddb_entry),
6930                                        sizeof(struct ql4_task_data),
6931                                        initial_cmdsn, INVALID_ENTRY);
6932         if (!cls_sess) {
6933                 ret = QLA_ERROR;
6934                 goto exit_setup;
6935         }
6936
6937         /*
6938          * so calling module_put function to decrement the
6939          * reference count.
6940          **/
6941         module_put(qla4xxx_iscsi_transport.owner);
6942         sess = cls_sess->dd_data;
6943         ddb_entry = sess->dd_data;
6944         ddb_entry->sess = cls_sess;
6945
6946         cls_sess->recovery_tmo = ql4xsess_recovery_tmo;
6947         memcpy(&ddb_entry->fw_ddb_entry, fw_ddb_entry,
6948                sizeof(struct dev_db_entry));
6949
6950         qla4xxx_setup_flash_ddb_entry(ha, ddb_entry, idx);
6951
6952         cls_conn = iscsi_conn_setup(cls_sess, sizeof(struct qla_conn), conn_id);
6953
6954         if (!cls_conn) {
6955                 ret = QLA_ERROR;
6956                 goto exit_setup;
6957         }
6958
6959         ddb_entry->conn = cls_conn;
6960
6961         /* Setup ep, for displaying attributes in sysfs */
6962         ep = qla4xxx_get_ep_fwdb(ha, fw_ddb_entry);
6963         if (ep) {
6964                 ep->conn = cls_conn;
6965                 cls_conn->ep = ep;
6966         } else {
6967                 DEBUG2(ql4_printk(KERN_ERR, ha, "Unable to get ep\n"));
6968                 ret = QLA_ERROR;
6969                 goto exit_setup;
6970         }
6971
6972         /* Update sess/conn params */
6973         qla4xxx_copy_fwddb_param(ha, fw_ddb_entry, cls_sess, cls_conn);
6974         qla4xxx_update_sess_disc_idx(ha, ddb_entry, fw_ddb_entry);
6975
6976         if (is_reset == RESET_ADAPTER) {
6977                 iscsi_block_session(cls_sess);
6978                 /* Use the relogin path to discover new devices
6979                  *  by short-circuting the logic of setting
6980                  *  timer to relogin - instead set the flags
6981                  *  to initiate login right away.
6982                  */
6983                 set_bit(DPC_RELOGIN_DEVICE, &ha->dpc_flags);
6984                 set_bit(DF_RELOGIN, &ddb_entry->flags);
6985         }
6986
6987 exit_setup:
6988         return ret;
6989 }
6990
6991 static void qla4xxx_update_fw_ddb_link(struct scsi_qla_host *ha,
6992                                        struct list_head *list_ddb,
6993                                        struct dev_db_entry *fw_ddb_entry)
6994 {
6995         struct qla_ddb_index  *ddb_idx, *ddb_idx_tmp;
6996         uint16_t ddb_link;
6997
6998         ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
6999
7000         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, list_ddb, list) {
7001                 if (ddb_idx->fw_ddb_idx == ddb_link) {
7002                         DEBUG2(ql4_printk(KERN_INFO, ha,
7003                                           "Updating NT parent idx from [%d] to [%d]\n",
7004                                           ddb_link, ddb_idx->flash_ddb_idx));
7005                         fw_ddb_entry->ddb_link =
7006                                             cpu_to_le16(ddb_idx->flash_ddb_idx);
7007                         return;
7008                 }
7009         }
7010 }
7011
7012 static void qla4xxx_build_nt_list(struct scsi_qla_host *ha,
7013                                   struct list_head *list_nt,
7014                                   struct list_head *list_st,
7015                                   int is_reset)
7016 {
7017         struct dev_db_entry *fw_ddb_entry;
7018         struct ddb_entry *ddb_entry = NULL;
7019         dma_addr_t fw_ddb_dma;
7020         int max_ddbs;
7021         int fw_idx_size;
7022         int ret;
7023         uint32_t idx = 0, next_idx = 0;
7024         uint32_t state = 0, conn_err = 0;
7025         uint32_t ddb_idx = -1;
7026         uint16_t conn_id = 0;
7027         uint16_t ddb_link = -1;
7028         struct qla_ddb_index  *nt_ddb_idx;
7029
7030         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
7031                                       &fw_ddb_dma);
7032         if (fw_ddb_entry == NULL) {
7033                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
7034                 goto exit_nt_list;
7035         }
7036         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
7037                                      MAX_DEV_DB_ENTRIES;
7038         fw_idx_size = sizeof(struct qla_ddb_index);
7039
7040         for (idx = 0; idx < max_ddbs; idx = next_idx) {
7041                 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
7042                                               NULL, &next_idx, &state,
7043                                               &conn_err, NULL, &conn_id);
7044                 if (ret == QLA_ERROR)
7045                         break;
7046
7047                 if (qla4xxx_verify_boot_idx(ha, idx) != QLA_SUCCESS)
7048                         goto continue_next_nt;
7049
7050                 /* Check if NT, then add to list it */
7051                 if (strlen((char *) fw_ddb_entry->iscsi_name) == 0)
7052                         goto continue_next_nt;
7053
7054                 ddb_link = le16_to_cpu(fw_ddb_entry->ddb_link);
7055                 if (ddb_link < max_ddbs)
7056                         qla4xxx_update_fw_ddb_link(ha, list_st, fw_ddb_entry);
7057
7058                 if (!(state == DDB_DS_NO_CONNECTION_ACTIVE ||
7059                     state == DDB_DS_SESSION_FAILED) &&
7060                     (is_reset == INIT_ADAPTER))
7061                         goto continue_next_nt;
7062
7063                 DEBUG2(ql4_printk(KERN_INFO, ha,
7064                                   "Adding  DDB to session = 0x%x\n", idx));
7065
7066                 if (is_reset == INIT_ADAPTER) {
7067                         nt_ddb_idx = vmalloc(fw_idx_size);
7068                         if (!nt_ddb_idx)
7069                                 break;
7070
7071                         nt_ddb_idx->fw_ddb_idx = idx;
7072
7073                         /* Copy original isid as it may get updated in function
7074                          * qla4xxx_update_isid(). We need original isid in
7075                          * function qla4xxx_compare_tuple_ddb to find duplicate
7076                          * target */
7077                         memcpy(&nt_ddb_idx->flash_isid[0],
7078                                &fw_ddb_entry->isid[0],
7079                                sizeof(nt_ddb_idx->flash_isid));
7080
7081                         ret = qla4xxx_is_flash_ddb_exists(ha, list_nt,
7082                                                           fw_ddb_entry);
7083                         if (ret == QLA_SUCCESS) {
7084                                 /* free nt_ddb_idx and do not add to list_nt */
7085                                 vfree(nt_ddb_idx);
7086                                 goto continue_next_nt;
7087                         }
7088
7089                         /* Copy updated isid */
7090                         memcpy(&nt_ddb_idx->fw_ddb, fw_ddb_entry,
7091                                sizeof(struct dev_db_entry));
7092
7093                         list_add_tail(&nt_ddb_idx->list, list_nt);
7094                 } else if (is_reset == RESET_ADAPTER) {
7095                         ret = qla4xxx_is_session_exists(ha, fw_ddb_entry,
7096                                                         &ddb_idx);
7097                         if (ret == QLA_SUCCESS) {
7098                                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha,
7099                                                                        ddb_idx);
7100                                 if (ddb_entry != NULL)
7101                                         qla4xxx_update_sess_disc_idx(ha,
7102                                                                      ddb_entry,
7103                                                                   fw_ddb_entry);
7104                                 goto continue_next_nt;
7105                         }
7106                 }
7107
7108                 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, is_reset, idx);
7109                 if (ret == QLA_ERROR)
7110                         goto exit_nt_list;
7111
7112 continue_next_nt:
7113                 if (next_idx == 0)
7114                         break;
7115         }
7116
7117 exit_nt_list:
7118         if (fw_ddb_entry)
7119                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
7120 }
7121
7122 static void qla4xxx_build_new_nt_list(struct scsi_qla_host *ha,
7123                                       struct list_head *list_nt,
7124                                       uint16_t target_id)
7125 {
7126         struct dev_db_entry *fw_ddb_entry;
7127         dma_addr_t fw_ddb_dma;
7128         int max_ddbs;
7129         int fw_idx_size;
7130         int ret;
7131         uint32_t idx = 0, next_idx = 0;
7132         uint32_t state = 0, conn_err = 0;
7133         uint16_t conn_id = 0;
7134         struct qla_ddb_index  *nt_ddb_idx;
7135
7136         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
7137                                       &fw_ddb_dma);
7138         if (fw_ddb_entry == NULL) {
7139                 DEBUG2(ql4_printk(KERN_ERR, ha, "Out of memory\n"));
7140                 goto exit_new_nt_list;
7141         }
7142         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
7143                                      MAX_DEV_DB_ENTRIES;
7144         fw_idx_size = sizeof(struct qla_ddb_index);
7145
7146         for (idx = 0; idx < max_ddbs; idx = next_idx) {
7147                 ret = qla4xxx_get_fwddb_entry(ha, idx, fw_ddb_entry, fw_ddb_dma,
7148                                               NULL, &next_idx, &state,
7149                                               &conn_err, NULL, &conn_id);
7150                 if (ret == QLA_ERROR)
7151                         break;
7152
7153                 /* Check if NT, then add it to list */
7154                 if (strlen((char *)fw_ddb_entry->iscsi_name) == 0)
7155                         goto continue_next_new_nt;
7156
7157                 if (!(state == DDB_DS_NO_CONNECTION_ACTIVE))
7158                         goto continue_next_new_nt;
7159
7160                 DEBUG2(ql4_printk(KERN_INFO, ha,
7161                                   "Adding  DDB to session = 0x%x\n", idx));
7162
7163                 nt_ddb_idx = vmalloc(fw_idx_size);
7164                 if (!nt_ddb_idx)
7165                         break;
7166
7167                 nt_ddb_idx->fw_ddb_idx = idx;
7168
7169                 ret = qla4xxx_is_session_exists(ha, fw_ddb_entry, NULL);
7170                 if (ret == QLA_SUCCESS) {
7171                         /* free nt_ddb_idx and do not add to list_nt */
7172                         vfree(nt_ddb_idx);
7173                         goto continue_next_new_nt;
7174                 }
7175
7176                 if (target_id < max_ddbs)
7177                         fw_ddb_entry->ddb_link = cpu_to_le16(target_id);
7178
7179                 list_add_tail(&nt_ddb_idx->list, list_nt);
7180
7181                 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, RESET_ADAPTER,
7182                                               idx);
7183                 if (ret == QLA_ERROR)
7184                         goto exit_new_nt_list;
7185
7186 continue_next_new_nt:
7187                 if (next_idx == 0)
7188                         break;
7189         }
7190
7191 exit_new_nt_list:
7192         if (fw_ddb_entry)
7193                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
7194 }
7195
7196 /**
7197  * qla4xxx_sysfs_ddb_is_non_persistent - check for non-persistence of ddb entry
7198  * @dev: dev associated with the sysfs entry
7199  * @data: pointer to flashnode session object
7200  *
7201  * Returns:
7202  *      1: if flashnode entry is non-persistent
7203  *      0: if flashnode entry is persistent
7204  **/
7205 static int qla4xxx_sysfs_ddb_is_non_persistent(struct device *dev, void *data)
7206 {
7207         struct iscsi_bus_flash_session *fnode_sess;
7208
7209         if (!iscsi_flashnode_bus_match(dev, NULL))
7210                 return 0;
7211
7212         fnode_sess = iscsi_dev_to_flash_session(dev);
7213
7214         return (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT);
7215 }
7216
7217 /**
7218  * qla4xxx_sysfs_ddb_tgt_create - Create sysfs entry for target
7219  * @ha: pointer to host
7220  * @fw_ddb_entry: flash ddb data
7221  * @idx: target index
7222  * @user: if set then this call is made from userland else from kernel
7223  *
7224  * Returns:
7225  * On sucess: QLA_SUCCESS
7226  * On failure: QLA_ERROR
7227  *
7228  * This create separate sysfs entries for session and connection attributes of
7229  * the given fw ddb entry.
7230  * If this is invoked as a result of a userspace call then the entry is marked
7231  * as nonpersistent using flash_state field.
7232  **/
7233 static int qla4xxx_sysfs_ddb_tgt_create(struct scsi_qla_host *ha,
7234                                         struct dev_db_entry *fw_ddb_entry,
7235                                         uint16_t *idx, int user)
7236 {
7237         struct iscsi_bus_flash_session *fnode_sess = NULL;
7238         struct iscsi_bus_flash_conn *fnode_conn = NULL;
7239         int rc = QLA_ERROR;
7240
7241         fnode_sess = iscsi_create_flashnode_sess(ha->host, *idx,
7242                                                  &qla4xxx_iscsi_transport, 0);
7243         if (!fnode_sess) {
7244                 ql4_printk(KERN_ERR, ha,
7245                            "%s: Unable to create session sysfs entry for flashnode %d of host%lu\n",
7246                            __func__, *idx, ha->host_no);
7247                 goto exit_tgt_create;
7248         }
7249
7250         fnode_conn = iscsi_create_flashnode_conn(ha->host, fnode_sess,
7251                                                  &qla4xxx_iscsi_transport, 0);
7252         if (!fnode_conn) {
7253                 ql4_printk(KERN_ERR, ha,
7254                            "%s: Unable to create conn sysfs entry for flashnode %d of host%lu\n",
7255                            __func__, *idx, ha->host_no);
7256                 goto free_sess;
7257         }
7258
7259         if (user) {
7260                 fnode_sess->flash_state = DEV_DB_NON_PERSISTENT;
7261         } else {
7262                 fnode_sess->flash_state = DEV_DB_PERSISTENT;
7263
7264                 if (*idx == ha->pri_ddb_idx || *idx == ha->sec_ddb_idx)
7265                         fnode_sess->is_boot_target = 1;
7266                 else
7267                         fnode_sess->is_boot_target = 0;
7268         }
7269
7270         rc = qla4xxx_copy_from_fwddb_param(fnode_sess, fnode_conn,
7271                                            fw_ddb_entry);
7272         if (rc)
7273                 goto free_sess;
7274
7275         ql4_printk(KERN_INFO, ha, "%s: sysfs entry %s created\n",
7276                    __func__, fnode_sess->dev.kobj.name);
7277
7278         ql4_printk(KERN_INFO, ha, "%s: sysfs entry %s created\n",
7279                    __func__, fnode_conn->dev.kobj.name);
7280
7281         return QLA_SUCCESS;
7282
7283 free_sess:
7284         iscsi_destroy_flashnode_sess(fnode_sess);
7285
7286 exit_tgt_create:
7287         return QLA_ERROR;
7288 }
7289
7290 /**
7291  * qla4xxx_sysfs_ddb_add - Add new ddb entry in flash
7292  * @shost: pointer to host
7293  * @buf: type of ddb entry (ipv4/ipv6)
7294  * @len: length of buf
7295  *
7296  * This creates new ddb entry in the flash by finding first free index and
7297  * storing default ddb there. And then create sysfs entry for the new ddb entry.
7298  **/
7299 static int qla4xxx_sysfs_ddb_add(struct Scsi_Host *shost, const char *buf,
7300                                  int len)
7301 {
7302         struct scsi_qla_host *ha = to_qla_host(shost);
7303         struct dev_db_entry *fw_ddb_entry = NULL;
7304         dma_addr_t fw_ddb_entry_dma;
7305         struct device *dev;
7306         uint16_t idx = 0;
7307         uint16_t max_ddbs = 0;
7308         uint32_t options = 0;
7309         uint32_t rval = QLA_ERROR;
7310
7311         if (strncasecmp(PORTAL_TYPE_IPV4, buf, 4) &&
7312             strncasecmp(PORTAL_TYPE_IPV6, buf, 4)) {
7313                 DEBUG2(ql4_printk(KERN_ERR, ha, "%s: Invalid portal type\n",
7314                                   __func__));
7315                 goto exit_ddb_add;
7316         }
7317
7318         max_ddbs =  is_qla40XX(ha) ? MAX_PRST_DEV_DB_ENTRIES :
7319                                      MAX_DEV_DB_ENTRIES;
7320
7321         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7322                                           &fw_ddb_entry_dma, GFP_KERNEL);
7323         if (!fw_ddb_entry) {
7324                 DEBUG2(ql4_printk(KERN_ERR, ha,
7325                                   "%s: Unable to allocate dma buffer\n",
7326                                   __func__));
7327                 goto exit_ddb_add;
7328         }
7329
7330         dev = iscsi_find_flashnode_sess(ha->host, NULL,
7331                                         qla4xxx_sysfs_ddb_is_non_persistent);
7332         if (dev) {
7333                 ql4_printk(KERN_ERR, ha,
7334                            "%s: A non-persistent entry %s found\n",
7335                            __func__, dev->kobj.name);
7336                 put_device(dev);
7337                 goto exit_ddb_add;
7338         }
7339
7340         /* Index 0 and 1 are reserved for boot target entries */
7341         for (idx = 2; idx < max_ddbs; idx++) {
7342                 if (qla4xxx_flashdb_by_index(ha, fw_ddb_entry,
7343                                              fw_ddb_entry_dma, idx))
7344                         break;
7345         }
7346
7347         if (idx == max_ddbs)
7348                 goto exit_ddb_add;
7349
7350         if (!strncasecmp("ipv6", buf, 4))
7351                 options |= IPV6_DEFAULT_DDB_ENTRY;
7352
7353         rval = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
7354         if (rval == QLA_ERROR)
7355                 goto exit_ddb_add;
7356
7357         rval = qla4xxx_sysfs_ddb_tgt_create(ha, fw_ddb_entry, &idx, 1);
7358
7359 exit_ddb_add:
7360         if (fw_ddb_entry)
7361                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7362                                   fw_ddb_entry, fw_ddb_entry_dma);
7363         if (rval == QLA_SUCCESS)
7364                 return idx;
7365         else
7366                 return -EIO;
7367 }
7368
7369 /**
7370  * qla4xxx_sysfs_ddb_apply - write the target ddb contents to Flash
7371  * @fnode_sess: pointer to session attrs of flash ddb entry
7372  * @fnode_conn: pointer to connection attrs of flash ddb entry
7373  *
7374  * This writes the contents of target ddb buffer to Flash with a valid cookie
7375  * value in order to make the ddb entry persistent.
7376  **/
7377 static int  qla4xxx_sysfs_ddb_apply(struct iscsi_bus_flash_session *fnode_sess,
7378                                     struct iscsi_bus_flash_conn *fnode_conn)
7379 {
7380         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
7381         struct scsi_qla_host *ha = to_qla_host(shost);
7382         uint32_t dev_db_start_offset = FLASH_OFFSET_DB_INFO;
7383         struct dev_db_entry *fw_ddb_entry = NULL;
7384         dma_addr_t fw_ddb_entry_dma;
7385         uint32_t options = 0;
7386         int rval = 0;
7387
7388         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7389                                           &fw_ddb_entry_dma, GFP_KERNEL);
7390         if (!fw_ddb_entry) {
7391                 DEBUG2(ql4_printk(KERN_ERR, ha,
7392                                   "%s: Unable to allocate dma buffer\n",
7393                                   __func__));
7394                 rval = -ENOMEM;
7395                 goto exit_ddb_apply;
7396         }
7397
7398         if (!strncasecmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7399                 options |= IPV6_DEFAULT_DDB_ENTRY;
7400
7401         rval = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
7402         if (rval == QLA_ERROR)
7403                 goto exit_ddb_apply;
7404
7405         dev_db_start_offset += (fnode_sess->target_id *
7406                                 sizeof(*fw_ddb_entry));
7407
7408         qla4xxx_copy_to_fwddb_param(fnode_sess, fnode_conn, fw_ddb_entry);
7409         fw_ddb_entry->cookie = DDB_VALID_COOKIE;
7410
7411         rval = qla4xxx_set_flash(ha, fw_ddb_entry_dma, dev_db_start_offset,
7412                                  sizeof(*fw_ddb_entry), FLASH_OPT_RMW_COMMIT);
7413
7414         if (rval == QLA_SUCCESS) {
7415                 fnode_sess->flash_state = DEV_DB_PERSISTENT;
7416                 ql4_printk(KERN_INFO, ha,
7417                            "%s: flash node %u of host %lu written to flash\n",
7418                            __func__, fnode_sess->target_id, ha->host_no);
7419         } else {
7420                 rval = -EIO;
7421                 ql4_printk(KERN_ERR, ha,
7422                            "%s: Error while writing flash node %u of host %lu to flash\n",
7423                            __func__, fnode_sess->target_id, ha->host_no);
7424         }
7425
7426 exit_ddb_apply:
7427         if (fw_ddb_entry)
7428                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7429                                   fw_ddb_entry, fw_ddb_entry_dma);
7430         return rval;
7431 }
7432
7433 static ssize_t qla4xxx_sysfs_ddb_conn_open(struct scsi_qla_host *ha,
7434                                            struct dev_db_entry *fw_ddb_entry,
7435                                            uint16_t idx)
7436 {
7437         struct dev_db_entry *ddb_entry = NULL;
7438         dma_addr_t ddb_entry_dma;
7439         unsigned long wtime;
7440         uint32_t mbx_sts = 0;
7441         uint32_t state = 0, conn_err = 0;
7442         uint16_t tmo = 0;
7443         int ret = 0;
7444
7445         ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*ddb_entry),
7446                                        &ddb_entry_dma, GFP_KERNEL);
7447         if (!ddb_entry) {
7448                 DEBUG2(ql4_printk(KERN_ERR, ha,
7449                                   "%s: Unable to allocate dma buffer\n",
7450                                   __func__));
7451                 return QLA_ERROR;
7452         }
7453
7454         memcpy(ddb_entry, fw_ddb_entry, sizeof(*ddb_entry));
7455
7456         ret = qla4xxx_set_ddb_entry(ha, idx, ddb_entry_dma, &mbx_sts);
7457         if (ret != QLA_SUCCESS) {
7458                 DEBUG2(ql4_printk(KERN_ERR, ha,
7459                                   "%s: Unable to set ddb entry for index %d\n",
7460                                   __func__, idx));
7461                 goto exit_ddb_conn_open;
7462         }
7463
7464         qla4xxx_conn_open(ha, idx);
7465
7466         /* To ensure that sendtargets is done, wait for at least 12 secs */
7467         tmo = ((ha->def_timeout > LOGIN_TOV) &&
7468                (ha->def_timeout < LOGIN_TOV * 10) ?
7469                ha->def_timeout : LOGIN_TOV);
7470
7471         DEBUG2(ql4_printk(KERN_INFO, ha,
7472                           "Default time to wait for login to ddb %d\n", tmo));
7473
7474         wtime = jiffies + (HZ * tmo);
7475         do {
7476                 ret = qla4xxx_get_fwddb_entry(ha, idx, NULL, 0, NULL,
7477                                               NULL, &state, &conn_err, NULL,
7478                                               NULL);
7479                 if (ret == QLA_ERROR)
7480                         continue;
7481
7482                 if (state == DDB_DS_NO_CONNECTION_ACTIVE ||
7483                     state == DDB_DS_SESSION_FAILED)
7484                         break;
7485
7486                 schedule_timeout_uninterruptible(HZ / 10);
7487         } while (time_after(wtime, jiffies));
7488
7489 exit_ddb_conn_open:
7490         if (ddb_entry)
7491                 dma_free_coherent(&ha->pdev->dev, sizeof(*ddb_entry),
7492                                   ddb_entry, ddb_entry_dma);
7493         return ret;
7494 }
7495
7496 static int qla4xxx_ddb_login_st(struct scsi_qla_host *ha,
7497                                 struct dev_db_entry *fw_ddb_entry,
7498                                 uint16_t target_id)
7499 {
7500         struct qla_ddb_index *ddb_idx, *ddb_idx_tmp;
7501         struct list_head list_nt;
7502         uint16_t ddb_index;
7503         int ret = 0;
7504
7505         if (test_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags)) {
7506                 ql4_printk(KERN_WARNING, ha,
7507                            "%s: A discovery already in progress!\n", __func__);
7508                 return QLA_ERROR;
7509         }
7510
7511         INIT_LIST_HEAD(&list_nt);
7512
7513         set_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags);
7514
7515         ret = qla4xxx_get_ddb_index(ha, &ddb_index);
7516         if (ret == QLA_ERROR)
7517                 goto exit_login_st_clr_bit;
7518
7519         ret = qla4xxx_sysfs_ddb_conn_open(ha, fw_ddb_entry, ddb_index);
7520         if (ret == QLA_ERROR)
7521                 goto exit_login_st;
7522
7523         qla4xxx_build_new_nt_list(ha, &list_nt, target_id);
7524
7525         list_for_each_entry_safe(ddb_idx, ddb_idx_tmp, &list_nt, list) {
7526                 list_del_init(&ddb_idx->list);
7527                 qla4xxx_clear_ddb_entry(ha, ddb_idx->fw_ddb_idx);
7528                 vfree(ddb_idx);
7529         }
7530
7531 exit_login_st:
7532         if (qla4xxx_clear_ddb_entry(ha, ddb_index) == QLA_ERROR) {
7533                 ql4_printk(KERN_ERR, ha,
7534                            "Unable to clear DDB index = 0x%x\n", ddb_index);
7535         }
7536
7537         clear_bit(ddb_index, ha->ddb_idx_map);
7538
7539 exit_login_st_clr_bit:
7540         clear_bit(AF_ST_DISCOVERY_IN_PROGRESS, &ha->flags);
7541         return ret;
7542 }
7543
7544 static int qla4xxx_ddb_login_nt(struct scsi_qla_host *ha,
7545                                 struct dev_db_entry *fw_ddb_entry,
7546                                 uint16_t idx)
7547 {
7548         int ret = QLA_ERROR;
7549
7550         ret = qla4xxx_is_session_exists(ha, fw_ddb_entry, NULL);
7551         if (ret != QLA_SUCCESS)
7552                 ret = qla4xxx_sess_conn_setup(ha, fw_ddb_entry, RESET_ADAPTER,
7553                                               idx);
7554         else
7555                 ret = -EPERM;
7556
7557         return ret;
7558 }
7559
7560 /**
7561  * qla4xxx_sysfs_ddb_login - Login to the specified target
7562  * @fnode_sess: pointer to session attrs of flash ddb entry
7563  * @fnode_conn: pointer to connection attrs of flash ddb entry
7564  *
7565  * This logs in to the specified target
7566  **/
7567 static int qla4xxx_sysfs_ddb_login(struct iscsi_bus_flash_session *fnode_sess,
7568                                    struct iscsi_bus_flash_conn *fnode_conn)
7569 {
7570         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
7571         struct scsi_qla_host *ha = to_qla_host(shost);
7572         struct dev_db_entry *fw_ddb_entry = NULL;
7573         dma_addr_t fw_ddb_entry_dma;
7574         uint32_t options = 0;
7575         int ret = 0;
7576
7577         if (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT) {
7578                 ql4_printk(KERN_ERR, ha,
7579                            "%s: Target info is not persistent\n", __func__);
7580                 ret = -EIO;
7581                 goto exit_ddb_login;
7582         }
7583
7584         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7585                                           &fw_ddb_entry_dma, GFP_KERNEL);
7586         if (!fw_ddb_entry) {
7587                 DEBUG2(ql4_printk(KERN_ERR, ha,
7588                                   "%s: Unable to allocate dma buffer\n",
7589                                   __func__));
7590                 ret = -ENOMEM;
7591                 goto exit_ddb_login;
7592         }
7593
7594         if (!strncasecmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7595                 options |= IPV6_DEFAULT_DDB_ENTRY;
7596
7597         ret = qla4xxx_get_default_ddb(ha, options, fw_ddb_entry_dma);
7598         if (ret == QLA_ERROR)
7599                 goto exit_ddb_login;
7600
7601         qla4xxx_copy_to_fwddb_param(fnode_sess, fnode_conn, fw_ddb_entry);
7602         fw_ddb_entry->cookie = DDB_VALID_COOKIE;
7603
7604         if (strlen((char *)fw_ddb_entry->iscsi_name) == 0)
7605                 ret = qla4xxx_ddb_login_st(ha, fw_ddb_entry,
7606                                            fnode_sess->target_id);
7607         else
7608                 ret = qla4xxx_ddb_login_nt(ha, fw_ddb_entry,
7609                                            fnode_sess->target_id);
7610
7611         if (ret > 0)
7612                 ret = -EIO;
7613
7614 exit_ddb_login:
7615         if (fw_ddb_entry)
7616                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7617                                   fw_ddb_entry, fw_ddb_entry_dma);
7618         return ret;
7619 }
7620
7621 /**
7622  * qla4xxx_sysfs_ddb_logout_sid - Logout session for the specified target
7623  * @cls_sess: pointer to session to be logged out
7624  *
7625  * This performs session log out from the specified target
7626  **/
7627 static int qla4xxx_sysfs_ddb_logout_sid(struct iscsi_cls_session *cls_sess)
7628 {
7629         struct iscsi_session *sess;
7630         struct ddb_entry *ddb_entry = NULL;
7631         struct scsi_qla_host *ha;
7632         struct dev_db_entry *fw_ddb_entry = NULL;
7633         dma_addr_t fw_ddb_entry_dma;
7634         unsigned long flags;
7635         unsigned long wtime;
7636         uint32_t ddb_state;
7637         int options;
7638         int ret = 0;
7639
7640         sess = cls_sess->dd_data;
7641         ddb_entry = sess->dd_data;
7642         ha = ddb_entry->ha;
7643
7644         if (ddb_entry->ddb_type != FLASH_DDB) {
7645                 ql4_printk(KERN_ERR, ha, "%s: Not a flash node session\n",
7646                            __func__);
7647                 ret = -ENXIO;
7648                 goto exit_ddb_logout;
7649         }
7650
7651         if (test_bit(DF_BOOT_TGT, &ddb_entry->flags)) {
7652                 ql4_printk(KERN_ERR, ha,
7653                            "%s: Logout from boot target entry is not permitted.\n",
7654                            __func__);
7655                 ret = -EPERM;
7656                 goto exit_ddb_logout;
7657         }
7658
7659         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7660                                           &fw_ddb_entry_dma, GFP_KERNEL);
7661         if (!fw_ddb_entry) {
7662                 ql4_printk(KERN_ERR, ha,
7663                            "%s: Unable to allocate dma buffer\n", __func__);
7664                 ret = -ENOMEM;
7665                 goto exit_ddb_logout;
7666         }
7667
7668         if (test_and_set_bit(DF_DISABLE_RELOGIN, &ddb_entry->flags))
7669                 goto ddb_logout_init;
7670
7671         ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
7672                                       fw_ddb_entry, fw_ddb_entry_dma,
7673                                       NULL, NULL, &ddb_state, NULL,
7674                                       NULL, NULL);
7675         if (ret == QLA_ERROR)
7676                 goto ddb_logout_init;
7677
7678         if (ddb_state == DDB_DS_SESSION_ACTIVE)
7679                 goto ddb_logout_init;
7680
7681         /* wait until next relogin is triggered using DF_RELOGIN and
7682          * clear DF_RELOGIN to avoid invocation of further relogin
7683          */
7684         wtime = jiffies + (HZ * RELOGIN_TOV);
7685         do {
7686                 if (test_and_clear_bit(DF_RELOGIN, &ddb_entry->flags))
7687                         goto ddb_logout_init;
7688
7689                 schedule_timeout_uninterruptible(HZ);
7690         } while ((time_after(wtime, jiffies)));
7691
7692 ddb_logout_init:
7693         atomic_set(&ddb_entry->retry_relogin_timer, INVALID_ENTRY);
7694         atomic_set(&ddb_entry->relogin_timer, 0);
7695
7696         options = LOGOUT_OPTION_CLOSE_SESSION;
7697         qla4xxx_session_logout_ddb(ha, ddb_entry, options);
7698
7699         memset(fw_ddb_entry, 0, sizeof(*fw_ddb_entry));
7700         wtime = jiffies + (HZ * LOGOUT_TOV);
7701         do {
7702                 ret = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
7703                                               fw_ddb_entry, fw_ddb_entry_dma,
7704                                               NULL, NULL, &ddb_state, NULL,
7705                                               NULL, NULL);
7706                 if (ret == QLA_ERROR)
7707                         goto ddb_logout_clr_sess;
7708
7709                 if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
7710                     (ddb_state == DDB_DS_SESSION_FAILED))
7711                         goto ddb_logout_clr_sess;
7712
7713                 schedule_timeout_uninterruptible(HZ);
7714         } while ((time_after(wtime, jiffies)));
7715
7716 ddb_logout_clr_sess:
7717         qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
7718         /*
7719          * we have decremented the reference count of the driver
7720          * when we setup the session to have the driver unload
7721          * to be seamless without actually destroying the
7722          * session
7723          **/
7724         try_module_get(qla4xxx_iscsi_transport.owner);
7725         iscsi_destroy_endpoint(ddb_entry->conn->ep);
7726
7727         spin_lock_irqsave(&ha->hardware_lock, flags);
7728         qla4xxx_free_ddb(ha, ddb_entry);
7729         clear_bit(ddb_entry->fw_ddb_index, ha->ddb_idx_map);
7730         spin_unlock_irqrestore(&ha->hardware_lock, flags);
7731
7732         iscsi_session_teardown(ddb_entry->sess);
7733
7734         clear_bit(DF_DISABLE_RELOGIN, &ddb_entry->flags);
7735         ret = QLA_SUCCESS;
7736
7737 exit_ddb_logout:
7738         if (fw_ddb_entry)
7739                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
7740                                   fw_ddb_entry, fw_ddb_entry_dma);
7741         return ret;
7742 }
7743
7744 /**
7745  * qla4xxx_sysfs_ddb_logout - Logout from the specified target
7746  * @fnode_sess: pointer to session attrs of flash ddb entry
7747  * @fnode_conn: pointer to connection attrs of flash ddb entry
7748  *
7749  * This performs log out from the specified target
7750  **/
7751 static int qla4xxx_sysfs_ddb_logout(struct iscsi_bus_flash_session *fnode_sess,
7752                                     struct iscsi_bus_flash_conn *fnode_conn)
7753 {
7754         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
7755         struct scsi_qla_host *ha = to_qla_host(shost);
7756         struct ql4_tuple_ddb *flash_tddb = NULL;
7757         struct ql4_tuple_ddb *tmp_tddb = NULL;
7758         struct dev_db_entry *fw_ddb_entry = NULL;
7759         struct ddb_entry *ddb_entry = NULL;
7760         dma_addr_t fw_ddb_dma;
7761         uint32_t next_idx = 0;
7762         uint32_t state = 0, conn_err = 0;
7763         uint16_t conn_id = 0;
7764         int idx, index;
7765         int status, ret = 0;
7766
7767         fw_ddb_entry = dma_pool_alloc(ha->fw_ddb_dma_pool, GFP_KERNEL,
7768                                       &fw_ddb_dma);
7769         if (fw_ddb_entry == NULL) {
7770                 ql4_printk(KERN_ERR, ha, "%s:Out of memory\n", __func__);
7771                 ret = -ENOMEM;
7772                 goto exit_ddb_logout;
7773         }
7774
7775         flash_tddb = vzalloc(sizeof(*flash_tddb));
7776         if (!flash_tddb) {
7777                 ql4_printk(KERN_WARNING, ha,
7778                            "%s:Memory Allocation failed.\n", __func__);
7779                 ret = -ENOMEM;
7780                 goto exit_ddb_logout;
7781         }
7782
7783         tmp_tddb = vzalloc(sizeof(*tmp_tddb));
7784         if (!tmp_tddb) {
7785                 ql4_printk(KERN_WARNING, ha,
7786                            "%s:Memory Allocation failed.\n", __func__);
7787                 ret = -ENOMEM;
7788                 goto exit_ddb_logout;
7789         }
7790
7791         if (!fnode_sess->targetname) {
7792                 ql4_printk(KERN_ERR, ha,
7793                            "%s:Cannot logout from SendTarget entry\n",
7794                            __func__);
7795                 ret = -EPERM;
7796                 goto exit_ddb_logout;
7797         }
7798
7799         if (fnode_sess->is_boot_target) {
7800                 ql4_printk(KERN_ERR, ha,
7801                            "%s: Logout from boot target entry is not permitted.\n",
7802                            __func__);
7803                 ret = -EPERM;
7804                 goto exit_ddb_logout;
7805         }
7806
7807         strlcpy(flash_tddb->iscsi_name, fnode_sess->targetname,
7808                 ISCSI_NAME_SIZE);
7809
7810         if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7811                 sprintf(flash_tddb->ip_addr, "%pI6", fnode_conn->ipaddress);
7812         else
7813                 sprintf(flash_tddb->ip_addr, "%pI4", fnode_conn->ipaddress);
7814
7815         flash_tddb->tpgt = fnode_sess->tpgt;
7816         flash_tddb->port = fnode_conn->port;
7817
7818         COPY_ISID(flash_tddb->isid, fnode_sess->isid);
7819
7820         for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
7821                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
7822                 if (ddb_entry == NULL)
7823                         continue;
7824
7825                 if (ddb_entry->ddb_type != FLASH_DDB)
7826                         continue;
7827
7828                 index = ddb_entry->sess->target_id;
7829                 status = qla4xxx_get_fwddb_entry(ha, index, fw_ddb_entry,
7830                                                  fw_ddb_dma, NULL, &next_idx,
7831                                                  &state, &conn_err, NULL,
7832                                                  &conn_id);
7833                 if (status == QLA_ERROR) {
7834                         ret = -ENOMEM;
7835                         break;
7836                 }
7837
7838                 qla4xxx_convert_param_ddb(fw_ddb_entry, tmp_tddb, NULL);
7839
7840                 status = qla4xxx_compare_tuple_ddb(ha, flash_tddb, tmp_tddb,
7841                                                    true);
7842                 if (status == QLA_SUCCESS) {
7843                         ret = qla4xxx_sysfs_ddb_logout_sid(ddb_entry->sess);
7844                         break;
7845                 }
7846         }
7847
7848         if (idx == MAX_DDB_ENTRIES)
7849                 ret = -ESRCH;
7850
7851 exit_ddb_logout:
7852         if (flash_tddb)
7853                 vfree(flash_tddb);
7854         if (tmp_tddb)
7855                 vfree(tmp_tddb);
7856         if (fw_ddb_entry)
7857                 dma_pool_free(ha->fw_ddb_dma_pool, fw_ddb_entry, fw_ddb_dma);
7858
7859         return ret;
7860 }
7861
7862 static int
7863 qla4xxx_sysfs_ddb_get_param(struct iscsi_bus_flash_session *fnode_sess,
7864                             int param, char *buf)
7865 {
7866         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
7867         struct scsi_qla_host *ha = to_qla_host(shost);
7868         struct iscsi_bus_flash_conn *fnode_conn;
7869         struct ql4_chap_table chap_tbl;
7870         struct device *dev;
7871         int parent_type;
7872         int rc = 0;
7873
7874         dev = iscsi_find_flashnode_conn(fnode_sess);
7875         if (!dev)
7876                 return -EIO;
7877
7878         fnode_conn = iscsi_dev_to_flash_conn(dev);
7879
7880         switch (param) {
7881         case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
7882                 rc = sprintf(buf, "%u\n", fnode_conn->is_fw_assigned_ipv6);
7883                 break;
7884         case ISCSI_FLASHNODE_PORTAL_TYPE:
7885                 rc = sprintf(buf, "%s\n", fnode_sess->portal_type);
7886                 break;
7887         case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
7888                 rc = sprintf(buf, "%u\n", fnode_sess->auto_snd_tgt_disable);
7889                 break;
7890         case ISCSI_FLASHNODE_DISCOVERY_SESS:
7891                 rc = sprintf(buf, "%u\n", fnode_sess->discovery_sess);
7892                 break;
7893         case ISCSI_FLASHNODE_ENTRY_EN:
7894                 rc = sprintf(buf, "%u\n", fnode_sess->entry_state);
7895                 break;
7896         case ISCSI_FLASHNODE_HDR_DGST_EN:
7897                 rc = sprintf(buf, "%u\n", fnode_conn->hdrdgst_en);
7898                 break;
7899         case ISCSI_FLASHNODE_DATA_DGST_EN:
7900                 rc = sprintf(buf, "%u\n", fnode_conn->datadgst_en);
7901                 break;
7902         case ISCSI_FLASHNODE_IMM_DATA_EN:
7903                 rc = sprintf(buf, "%u\n", fnode_sess->imm_data_en);
7904                 break;
7905         case ISCSI_FLASHNODE_INITIAL_R2T_EN:
7906                 rc = sprintf(buf, "%u\n", fnode_sess->initial_r2t_en);
7907                 break;
7908         case ISCSI_FLASHNODE_DATASEQ_INORDER:
7909                 rc = sprintf(buf, "%u\n", fnode_sess->dataseq_inorder_en);
7910                 break;
7911         case ISCSI_FLASHNODE_PDU_INORDER:
7912                 rc = sprintf(buf, "%u\n", fnode_sess->pdu_inorder_en);
7913                 break;
7914         case ISCSI_FLASHNODE_CHAP_AUTH_EN:
7915                 rc = sprintf(buf, "%u\n", fnode_sess->chap_auth_en);
7916                 break;
7917         case ISCSI_FLASHNODE_SNACK_REQ_EN:
7918                 rc = sprintf(buf, "%u\n", fnode_conn->snack_req_en);
7919                 break;
7920         case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
7921                 rc = sprintf(buf, "%u\n", fnode_sess->discovery_logout_en);
7922                 break;
7923         case ISCSI_FLASHNODE_BIDI_CHAP_EN:
7924                 rc = sprintf(buf, "%u\n", fnode_sess->bidi_chap_en);
7925                 break;
7926         case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
7927                 rc = sprintf(buf, "%u\n", fnode_sess->discovery_auth_optional);
7928                 break;
7929         case ISCSI_FLASHNODE_ERL:
7930                 rc = sprintf(buf, "%u\n", fnode_sess->erl);
7931                 break;
7932         case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
7933                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_timestamp_stat);
7934                 break;
7935         case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
7936                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_nagle_disable);
7937                 break;
7938         case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
7939                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_wsf_disable);
7940                 break;
7941         case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
7942                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_timer_scale);
7943                 break;
7944         case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
7945                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_timestamp_en);
7946                 break;
7947         case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
7948                 rc = sprintf(buf, "%u\n", fnode_conn->fragment_disable);
7949                 break;
7950         case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
7951                 rc = sprintf(buf, "%u\n", fnode_conn->max_recv_dlength);
7952                 break;
7953         case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
7954                 rc = sprintf(buf, "%u\n", fnode_conn->max_xmit_dlength);
7955                 break;
7956         case ISCSI_FLASHNODE_FIRST_BURST:
7957                 rc = sprintf(buf, "%u\n", fnode_sess->first_burst);
7958                 break;
7959         case ISCSI_FLASHNODE_DEF_TIME2WAIT:
7960                 rc = sprintf(buf, "%u\n", fnode_sess->time2wait);
7961                 break;
7962         case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
7963                 rc = sprintf(buf, "%u\n", fnode_sess->time2retain);
7964                 break;
7965         case ISCSI_FLASHNODE_MAX_R2T:
7966                 rc = sprintf(buf, "%u\n", fnode_sess->max_r2t);
7967                 break;
7968         case ISCSI_FLASHNODE_KEEPALIVE_TMO:
7969                 rc = sprintf(buf, "%u\n", fnode_conn->keepalive_timeout);
7970                 break;
7971         case ISCSI_FLASHNODE_ISID:
7972                 rc = sprintf(buf, "%pm\n", fnode_sess->isid);
7973                 break;
7974         case ISCSI_FLASHNODE_TSID:
7975                 rc = sprintf(buf, "%u\n", fnode_sess->tsid);
7976                 break;
7977         case ISCSI_FLASHNODE_PORT:
7978                 rc = sprintf(buf, "%d\n", fnode_conn->port);
7979                 break;
7980         case ISCSI_FLASHNODE_MAX_BURST:
7981                 rc = sprintf(buf, "%u\n", fnode_sess->max_burst);
7982                 break;
7983         case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
7984                 rc = sprintf(buf, "%u\n",
7985                              fnode_sess->default_taskmgmt_timeout);
7986                 break;
7987         case ISCSI_FLASHNODE_IPADDR:
7988                 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
7989                         rc = sprintf(buf, "%pI6\n", fnode_conn->ipaddress);
7990                 else
7991                         rc = sprintf(buf, "%pI4\n", fnode_conn->ipaddress);
7992                 break;
7993         case ISCSI_FLASHNODE_ALIAS:
7994                 if (fnode_sess->targetalias)
7995                         rc = sprintf(buf, "%s\n", fnode_sess->targetalias);
7996                 else
7997                         rc = sprintf(buf, "\n");
7998                 break;
7999         case ISCSI_FLASHNODE_REDIRECT_IPADDR:
8000                 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
8001                         rc = sprintf(buf, "%pI6\n",
8002                                      fnode_conn->redirect_ipaddr);
8003                 else
8004                         rc = sprintf(buf, "%pI4\n",
8005                                      fnode_conn->redirect_ipaddr);
8006                 break;
8007         case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
8008                 rc = sprintf(buf, "%u\n", fnode_conn->max_segment_size);
8009                 break;
8010         case ISCSI_FLASHNODE_LOCAL_PORT:
8011                 rc = sprintf(buf, "%u\n", fnode_conn->local_port);
8012                 break;
8013         case ISCSI_FLASHNODE_IPV4_TOS:
8014                 rc = sprintf(buf, "%u\n", fnode_conn->ipv4_tos);
8015                 break;
8016         case ISCSI_FLASHNODE_IPV6_TC:
8017                 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
8018                         rc = sprintf(buf, "%u\n",
8019                                      fnode_conn->ipv6_traffic_class);
8020                 else
8021                         rc = sprintf(buf, "\n");
8022                 break;
8023         case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
8024                 rc = sprintf(buf, "%u\n", fnode_conn->ipv6_flow_label);
8025                 break;
8026         case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
8027                 if (!strncmp(fnode_sess->portal_type, PORTAL_TYPE_IPV6, 4))
8028                         rc = sprintf(buf, "%pI6\n",
8029                                      fnode_conn->link_local_ipv6_addr);
8030                 else
8031                         rc = sprintf(buf, "\n");
8032                 break;
8033         case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
8034                 rc = sprintf(buf, "%u\n", fnode_sess->discovery_parent_idx);
8035                 break;
8036         case ISCSI_FLASHNODE_DISCOVERY_PARENT_TYPE:
8037                 if (fnode_sess->discovery_parent_type == DDB_ISNS)
8038                         parent_type = ISCSI_DISC_PARENT_ISNS;
8039                 else if (fnode_sess->discovery_parent_type == DDB_NO_LINK)
8040                         parent_type = ISCSI_DISC_PARENT_UNKNOWN;
8041                 else if (fnode_sess->discovery_parent_type < MAX_DDB_ENTRIES)
8042                         parent_type = ISCSI_DISC_PARENT_SENDTGT;
8043                 else
8044                         parent_type = ISCSI_DISC_PARENT_UNKNOWN;
8045
8046                 rc = sprintf(buf, "%s\n",
8047                              iscsi_get_discovery_parent_name(parent_type));
8048                 break;
8049         case ISCSI_FLASHNODE_NAME:
8050                 if (fnode_sess->targetname)
8051                         rc = sprintf(buf, "%s\n", fnode_sess->targetname);
8052                 else
8053                         rc = sprintf(buf, "\n");
8054                 break;
8055         case ISCSI_FLASHNODE_TPGT:
8056                 rc = sprintf(buf, "%u\n", fnode_sess->tpgt);
8057                 break;
8058         case ISCSI_FLASHNODE_TCP_XMIT_WSF:
8059                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_xmit_wsf);
8060                 break;
8061         case ISCSI_FLASHNODE_TCP_RECV_WSF:
8062                 rc = sprintf(buf, "%u\n", fnode_conn->tcp_recv_wsf);
8063                 break;
8064         case ISCSI_FLASHNODE_CHAP_OUT_IDX:
8065                 rc = sprintf(buf, "%u\n", fnode_sess->chap_out_idx);
8066                 break;
8067         case ISCSI_FLASHNODE_USERNAME:
8068                 if (fnode_sess->chap_auth_en) {
8069                         qla4xxx_get_uni_chap_at_index(ha,
8070                                                       chap_tbl.name,
8071                                                       chap_tbl.secret,
8072                                                       fnode_sess->chap_out_idx);
8073                         rc = sprintf(buf, "%s\n", chap_tbl.name);
8074                 } else {
8075                         rc = sprintf(buf, "\n");
8076                 }
8077                 break;
8078         case ISCSI_FLASHNODE_PASSWORD:
8079                 if (fnode_sess->chap_auth_en) {
8080                         qla4xxx_get_uni_chap_at_index(ha,
8081                                                       chap_tbl.name,
8082                                                       chap_tbl.secret,
8083                                                       fnode_sess->chap_out_idx);
8084                         rc = sprintf(buf, "%s\n", chap_tbl.secret);
8085                 } else {
8086                         rc = sprintf(buf, "\n");
8087                 }
8088                 break;
8089         case ISCSI_FLASHNODE_STATSN:
8090                 rc = sprintf(buf, "%u\n", fnode_conn->statsn);
8091                 break;
8092         case ISCSI_FLASHNODE_EXP_STATSN:
8093                 rc = sprintf(buf, "%u\n", fnode_conn->exp_statsn);
8094                 break;
8095         case ISCSI_FLASHNODE_IS_BOOT_TGT:
8096                 rc = sprintf(buf, "%u\n", fnode_sess->is_boot_target);
8097                 break;
8098         default:
8099                 rc = -ENOSYS;
8100                 break;
8101         }
8102
8103         put_device(dev);
8104         return rc;
8105 }
8106
8107 /**
8108  * qla4xxx_sysfs_ddb_set_param - Set parameter for firmware DDB entry
8109  * @fnode_sess: pointer to session attrs of flash ddb entry
8110  * @fnode_conn: pointer to connection attrs of flash ddb entry
8111  * @data: Parameters and their values to update
8112  * @len: len of data
8113  *
8114  * This sets the parameter of flash ddb entry and writes them to flash
8115  **/
8116 static int
8117 qla4xxx_sysfs_ddb_set_param(struct iscsi_bus_flash_session *fnode_sess,
8118                             struct iscsi_bus_flash_conn *fnode_conn,
8119                             void *data, int len)
8120 {
8121         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
8122         struct scsi_qla_host *ha = to_qla_host(shost);
8123         struct iscsi_flashnode_param_info *fnode_param;
8124         struct ql4_chap_table chap_tbl;
8125         struct nlattr *attr;
8126         uint16_t chap_out_idx = INVALID_ENTRY;
8127         int rc = QLA_ERROR;
8128         uint32_t rem = len;
8129
8130         memset((void *)&chap_tbl, 0, sizeof(chap_tbl));
8131         nla_for_each_attr(attr, data, len, rem) {
8132                 if (nla_len(attr) < sizeof(*fnode_param)) {
8133                         rc = -EINVAL;
8134                         goto exit_set_param;
8135                 }
8136
8137                 fnode_param = nla_data(attr);
8138
8139                 switch (fnode_param->param) {
8140                 case ISCSI_FLASHNODE_IS_FW_ASSIGNED_IPV6:
8141                         fnode_conn->is_fw_assigned_ipv6 = fnode_param->value[0];
8142                         break;
8143                 case ISCSI_FLASHNODE_PORTAL_TYPE:
8144                         memcpy(fnode_sess->portal_type, fnode_param->value,
8145                                strlen(fnode_sess->portal_type));
8146                         break;
8147                 case ISCSI_FLASHNODE_AUTO_SND_TGT_DISABLE:
8148                         fnode_sess->auto_snd_tgt_disable =
8149                                                         fnode_param->value[0];
8150                         break;
8151                 case ISCSI_FLASHNODE_DISCOVERY_SESS:
8152                         fnode_sess->discovery_sess = fnode_param->value[0];
8153                         break;
8154                 case ISCSI_FLASHNODE_ENTRY_EN:
8155                         fnode_sess->entry_state = fnode_param->value[0];
8156                         break;
8157                 case ISCSI_FLASHNODE_HDR_DGST_EN:
8158                         fnode_conn->hdrdgst_en = fnode_param->value[0];
8159                         break;
8160                 case ISCSI_FLASHNODE_DATA_DGST_EN:
8161                         fnode_conn->datadgst_en = fnode_param->value[0];
8162                         break;
8163                 case ISCSI_FLASHNODE_IMM_DATA_EN:
8164                         fnode_sess->imm_data_en = fnode_param->value[0];
8165                         break;
8166                 case ISCSI_FLASHNODE_INITIAL_R2T_EN:
8167                         fnode_sess->initial_r2t_en = fnode_param->value[0];
8168                         break;
8169                 case ISCSI_FLASHNODE_DATASEQ_INORDER:
8170                         fnode_sess->dataseq_inorder_en = fnode_param->value[0];
8171                         break;
8172                 case ISCSI_FLASHNODE_PDU_INORDER:
8173                         fnode_sess->pdu_inorder_en = fnode_param->value[0];
8174                         break;
8175                 case ISCSI_FLASHNODE_CHAP_AUTH_EN:
8176                         fnode_sess->chap_auth_en = fnode_param->value[0];
8177                         /* Invalidate chap index if chap auth is disabled */
8178                         if (!fnode_sess->chap_auth_en)
8179                                 fnode_sess->chap_out_idx = INVALID_ENTRY;
8180
8181                         break;
8182                 case ISCSI_FLASHNODE_SNACK_REQ_EN:
8183                         fnode_conn->snack_req_en = fnode_param->value[0];
8184                         break;
8185                 case ISCSI_FLASHNODE_DISCOVERY_LOGOUT_EN:
8186                         fnode_sess->discovery_logout_en = fnode_param->value[0];
8187                         break;
8188                 case ISCSI_FLASHNODE_BIDI_CHAP_EN:
8189                         fnode_sess->bidi_chap_en = fnode_param->value[0];
8190                         break;
8191                 case ISCSI_FLASHNODE_DISCOVERY_AUTH_OPTIONAL:
8192                         fnode_sess->discovery_auth_optional =
8193                                                         fnode_param->value[0];
8194                         break;
8195                 case ISCSI_FLASHNODE_ERL:
8196                         fnode_sess->erl = fnode_param->value[0];
8197                         break;
8198                 case ISCSI_FLASHNODE_TCP_TIMESTAMP_STAT:
8199                         fnode_conn->tcp_timestamp_stat = fnode_param->value[0];
8200                         break;
8201                 case ISCSI_FLASHNODE_TCP_NAGLE_DISABLE:
8202                         fnode_conn->tcp_nagle_disable = fnode_param->value[0];
8203                         break;
8204                 case ISCSI_FLASHNODE_TCP_WSF_DISABLE:
8205                         fnode_conn->tcp_wsf_disable = fnode_param->value[0];
8206                         break;
8207                 case ISCSI_FLASHNODE_TCP_TIMER_SCALE:
8208                         fnode_conn->tcp_timer_scale = fnode_param->value[0];
8209                         break;
8210                 case ISCSI_FLASHNODE_TCP_TIMESTAMP_EN:
8211                         fnode_conn->tcp_timestamp_en = fnode_param->value[0];
8212                         break;
8213                 case ISCSI_FLASHNODE_IP_FRAG_DISABLE:
8214                         fnode_conn->fragment_disable = fnode_param->value[0];
8215                         break;
8216                 case ISCSI_FLASHNODE_MAX_RECV_DLENGTH:
8217                         fnode_conn->max_recv_dlength =
8218                                         *(unsigned *)fnode_param->value;
8219                         break;
8220                 case ISCSI_FLASHNODE_MAX_XMIT_DLENGTH:
8221                         fnode_conn->max_xmit_dlength =
8222                                         *(unsigned *)fnode_param->value;
8223                         break;
8224                 case ISCSI_FLASHNODE_FIRST_BURST:
8225                         fnode_sess->first_burst =
8226                                         *(unsigned *)fnode_param->value;
8227                         break;
8228                 case ISCSI_FLASHNODE_DEF_TIME2WAIT:
8229                         fnode_sess->time2wait = *(uint16_t *)fnode_param->value;
8230                         break;
8231                 case ISCSI_FLASHNODE_DEF_TIME2RETAIN:
8232                         fnode_sess->time2retain =
8233                                                 *(uint16_t *)fnode_param->value;
8234                         break;
8235                 case ISCSI_FLASHNODE_MAX_R2T:
8236                         fnode_sess->max_r2t =
8237                                         *(uint16_t *)fnode_param->value;
8238                         break;
8239                 case ISCSI_FLASHNODE_KEEPALIVE_TMO:
8240                         fnode_conn->keepalive_timeout =
8241                                 *(uint16_t *)fnode_param->value;
8242                         break;
8243                 case ISCSI_FLASHNODE_ISID:
8244                         memcpy(fnode_sess->isid, fnode_param->value,
8245                                sizeof(fnode_sess->isid));
8246                         break;
8247                 case ISCSI_FLASHNODE_TSID:
8248                         fnode_sess->tsid = *(uint16_t *)fnode_param->value;
8249                         break;
8250                 case ISCSI_FLASHNODE_PORT:
8251                         fnode_conn->port = *(uint16_t *)fnode_param->value;
8252                         break;
8253                 case ISCSI_FLASHNODE_MAX_BURST:
8254                         fnode_sess->max_burst = *(unsigned *)fnode_param->value;
8255                         break;
8256                 case ISCSI_FLASHNODE_DEF_TASKMGMT_TMO:
8257                         fnode_sess->default_taskmgmt_timeout =
8258                                                 *(uint16_t *)fnode_param->value;
8259                         break;
8260                 case ISCSI_FLASHNODE_IPADDR:
8261                         memcpy(fnode_conn->ipaddress, fnode_param->value,
8262                                IPv6_ADDR_LEN);
8263                         break;
8264                 case ISCSI_FLASHNODE_ALIAS:
8265                         rc = iscsi_switch_str_param(&fnode_sess->targetalias,
8266                                                     (char *)fnode_param->value);
8267                         break;
8268                 case ISCSI_FLASHNODE_REDIRECT_IPADDR:
8269                         memcpy(fnode_conn->redirect_ipaddr, fnode_param->value,
8270                                IPv6_ADDR_LEN);
8271                         break;
8272                 case ISCSI_FLASHNODE_MAX_SEGMENT_SIZE:
8273                         fnode_conn->max_segment_size =
8274                                         *(unsigned *)fnode_param->value;
8275                         break;
8276                 case ISCSI_FLASHNODE_LOCAL_PORT:
8277                         fnode_conn->local_port =
8278                                                 *(uint16_t *)fnode_param->value;
8279                         break;
8280                 case ISCSI_FLASHNODE_IPV4_TOS:
8281                         fnode_conn->ipv4_tos = fnode_param->value[0];
8282                         break;
8283                 case ISCSI_FLASHNODE_IPV6_TC:
8284                         fnode_conn->ipv6_traffic_class = fnode_param->value[0];
8285                         break;
8286                 case ISCSI_FLASHNODE_IPV6_FLOW_LABEL:
8287                         fnode_conn->ipv6_flow_label = fnode_param->value[0];
8288                         break;
8289                 case ISCSI_FLASHNODE_NAME:
8290                         rc = iscsi_switch_str_param(&fnode_sess->targetname,
8291                                                     (char *)fnode_param->value);
8292                         break;
8293                 case ISCSI_FLASHNODE_TPGT:
8294                         fnode_sess->tpgt = *(uint16_t *)fnode_param->value;
8295                         break;
8296                 case ISCSI_FLASHNODE_LINK_LOCAL_IPV6:
8297                         memcpy(fnode_conn->link_local_ipv6_addr,
8298                                fnode_param->value, IPv6_ADDR_LEN);
8299                         break;
8300                 case ISCSI_FLASHNODE_DISCOVERY_PARENT_IDX:
8301                         fnode_sess->discovery_parent_idx =
8302                                                 *(uint16_t *)fnode_param->value;
8303                         break;
8304                 case ISCSI_FLASHNODE_TCP_XMIT_WSF:
8305                         fnode_conn->tcp_xmit_wsf =
8306                                                 *(uint8_t *)fnode_param->value;
8307                         break;
8308                 case ISCSI_FLASHNODE_TCP_RECV_WSF:
8309                         fnode_conn->tcp_recv_wsf =
8310                                                 *(uint8_t *)fnode_param->value;
8311                         break;
8312                 case ISCSI_FLASHNODE_STATSN:
8313                         fnode_conn->statsn = *(uint32_t *)fnode_param->value;
8314                         break;
8315                 case ISCSI_FLASHNODE_EXP_STATSN:
8316                         fnode_conn->exp_statsn =
8317                                                 *(uint32_t *)fnode_param->value;
8318                         break;
8319                 case ISCSI_FLASHNODE_CHAP_OUT_IDX:
8320                         chap_out_idx = *(uint16_t *)fnode_param->value;
8321                         if (!qla4xxx_get_uni_chap_at_index(ha,
8322                                                            chap_tbl.name,
8323                                                            chap_tbl.secret,
8324                                                            chap_out_idx)) {
8325                                 fnode_sess->chap_out_idx = chap_out_idx;
8326                                 /* Enable chap auth if chap index is valid */
8327                                 fnode_sess->chap_auth_en = QL4_PARAM_ENABLE;
8328                         }
8329                         break;
8330                 default:
8331                         ql4_printk(KERN_ERR, ha,
8332                                    "%s: No such sysfs attribute\n", __func__);
8333                         rc = -ENOSYS;
8334                         goto exit_set_param;
8335                 }
8336         }
8337
8338         rc = qla4xxx_sysfs_ddb_apply(fnode_sess, fnode_conn);
8339
8340 exit_set_param:
8341         return rc;
8342 }
8343
8344 /**
8345  * qla4xxx_sysfs_ddb_delete - Delete firmware DDB entry
8346  * @fnode_sess: pointer to session attrs of flash ddb entry
8347  *
8348  * This invalidates the flash ddb entry at the given index
8349  **/
8350 static int qla4xxx_sysfs_ddb_delete(struct iscsi_bus_flash_session *fnode_sess)
8351 {
8352         struct Scsi_Host *shost = iscsi_flash_session_to_shost(fnode_sess);
8353         struct scsi_qla_host *ha = to_qla_host(shost);
8354         uint32_t dev_db_start_offset;
8355         uint32_t dev_db_end_offset;
8356         struct dev_db_entry *fw_ddb_entry = NULL;
8357         dma_addr_t fw_ddb_entry_dma;
8358         uint16_t *ddb_cookie = NULL;
8359         size_t ddb_size = 0;
8360         void *pddb = NULL;
8361         int target_id;
8362         int rc = 0;
8363
8364         if (fnode_sess->is_boot_target) {
8365                 rc = -EPERM;
8366                 DEBUG2(ql4_printk(KERN_ERR, ha,
8367                                   "%s: Deletion of boot target entry is not permitted.\n",
8368                                   __func__));
8369                 goto exit_ddb_del;
8370         }
8371
8372         if (fnode_sess->flash_state == DEV_DB_NON_PERSISTENT)
8373                 goto sysfs_ddb_del;
8374
8375         if (is_qla40XX(ha)) {
8376                 dev_db_start_offset = FLASH_OFFSET_DB_INFO;
8377                 dev_db_end_offset = FLASH_OFFSET_DB_END;
8378                 dev_db_start_offset += (fnode_sess->target_id *
8379                                        sizeof(*fw_ddb_entry));
8380                 ddb_size = sizeof(*fw_ddb_entry);
8381         } else {
8382                 dev_db_start_offset = FLASH_RAW_ACCESS_ADDR +
8383                                       (ha->hw.flt_region_ddb << 2);
8384                 /* flt_ddb_size is DDB table size for both ports
8385                  * so divide it by 2 to calculate the offset for second port
8386                  */
8387                 if (ha->port_num == 1)
8388                         dev_db_start_offset += (ha->hw.flt_ddb_size / 2);
8389
8390                 dev_db_end_offset = dev_db_start_offset +
8391                                     (ha->hw.flt_ddb_size / 2);
8392
8393                 dev_db_start_offset += (fnode_sess->target_id *
8394                                        sizeof(*fw_ddb_entry));
8395                 dev_db_start_offset += offsetof(struct dev_db_entry, cookie);
8396
8397                 ddb_size = sizeof(*ddb_cookie);
8398         }
8399
8400         DEBUG2(ql4_printk(KERN_ERR, ha, "%s: start offset=%u, end offset=%u\n",
8401                           __func__, dev_db_start_offset, dev_db_end_offset));
8402
8403         if (dev_db_start_offset > dev_db_end_offset) {
8404                 rc = -EIO;
8405                 DEBUG2(ql4_printk(KERN_ERR, ha, "%s:Invalid DDB index %u\n",
8406                                   __func__, fnode_sess->target_id));
8407                 goto exit_ddb_del;
8408         }
8409
8410         pddb = dma_alloc_coherent(&ha->pdev->dev, ddb_size,
8411                                   &fw_ddb_entry_dma, GFP_KERNEL);
8412         if (!pddb) {
8413                 rc = -ENOMEM;
8414                 DEBUG2(ql4_printk(KERN_ERR, ha,
8415                                   "%s: Unable to allocate dma buffer\n",
8416                                   __func__));
8417                 goto exit_ddb_del;
8418         }
8419
8420         if (is_qla40XX(ha)) {
8421                 fw_ddb_entry = pddb;
8422                 memset(fw_ddb_entry, 0, ddb_size);
8423                 ddb_cookie = &fw_ddb_entry->cookie;
8424         } else {
8425                 ddb_cookie = pddb;
8426         }
8427
8428         /* invalidate the cookie */
8429         *ddb_cookie = 0xFFEE;
8430         qla4xxx_set_flash(ha, fw_ddb_entry_dma, dev_db_start_offset,
8431                           ddb_size, FLASH_OPT_RMW_COMMIT);
8432
8433 sysfs_ddb_del:
8434         target_id = fnode_sess->target_id;
8435         iscsi_destroy_flashnode_sess(fnode_sess);
8436         ql4_printk(KERN_INFO, ha,
8437                    "%s: session and conn entries for flashnode %u of host %lu deleted\n",
8438                    __func__, target_id, ha->host_no);
8439 exit_ddb_del:
8440         if (pddb)
8441                 dma_free_coherent(&ha->pdev->dev, ddb_size, pddb,
8442                                   fw_ddb_entry_dma);
8443         return rc;
8444 }
8445
8446 /**
8447  * qla4xxx_sysfs_ddb_export - Create sysfs entries for firmware DDBs
8448  * @ha: pointer to adapter structure
8449  *
8450  * Export the firmware DDB for all send targets and normal targets to sysfs.
8451  **/
8452 int qla4xxx_sysfs_ddb_export(struct scsi_qla_host *ha)
8453 {
8454         struct dev_db_entry *fw_ddb_entry = NULL;
8455         dma_addr_t fw_ddb_entry_dma;
8456         uint16_t max_ddbs;
8457         uint16_t idx = 0;
8458         int ret = QLA_SUCCESS;
8459
8460         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev,
8461                                           sizeof(*fw_ddb_entry),
8462                                           &fw_ddb_entry_dma, GFP_KERNEL);
8463         if (!fw_ddb_entry) {
8464                 DEBUG2(ql4_printk(KERN_ERR, ha,
8465                                   "%s: Unable to allocate dma buffer\n",
8466                                   __func__));
8467                 return -ENOMEM;
8468         }
8469
8470         max_ddbs =  is_qla40XX(ha) ? MAX_PRST_DEV_DB_ENTRIES :
8471                                      MAX_DEV_DB_ENTRIES;
8472
8473         for (idx = 0; idx < max_ddbs; idx++) {
8474                 if (qla4xxx_flashdb_by_index(ha, fw_ddb_entry, fw_ddb_entry_dma,
8475                                              idx))
8476                         continue;
8477
8478                 ret = qla4xxx_sysfs_ddb_tgt_create(ha, fw_ddb_entry, &idx, 0);
8479                 if (ret) {
8480                         ret = -EIO;
8481                         break;
8482                 }
8483         }
8484
8485         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry), fw_ddb_entry,
8486                           fw_ddb_entry_dma);
8487
8488         return ret;
8489 }
8490
8491 static void qla4xxx_sysfs_ddb_remove(struct scsi_qla_host *ha)
8492 {
8493         iscsi_destroy_all_flashnode(ha->host);
8494 }
8495
8496 /**
8497  * qla4xxx_build_ddb_list - Build ddb list and setup sessions
8498  * @ha: pointer to adapter structure
8499  * @is_reset: Is this init path or reset path
8500  *
8501  * Create a list of sendtargets (st) from firmware DDBs, issue send targets
8502  * using connection open, then create the list of normal targets (nt)
8503  * from firmware DDBs. Based on the list of nt setup session and connection
8504  * objects.
8505  **/
8506 void qla4xxx_build_ddb_list(struct scsi_qla_host *ha, int is_reset)
8507 {
8508         uint16_t tmo = 0;
8509         struct list_head list_st, list_nt;
8510         struct qla_ddb_index  *st_ddb_idx, *st_ddb_idx_tmp;
8511         unsigned long wtime;
8512
8513         if (!test_bit(AF_LINK_UP, &ha->flags)) {
8514                 set_bit(AF_BUILD_DDB_LIST, &ha->flags);
8515                 ha->is_reset = is_reset;
8516                 return;
8517         }
8518
8519         INIT_LIST_HEAD(&list_st);
8520         INIT_LIST_HEAD(&list_nt);
8521
8522         qla4xxx_build_st_list(ha, &list_st);
8523
8524         /* Before issuing conn open mbox, ensure all IPs states are configured
8525          * Note, conn open fails if IPs are not configured
8526          */
8527         qla4xxx_wait_for_ip_configuration(ha);
8528
8529         /* Go thru the STs and fire the sendtargets by issuing conn open mbx */
8530         list_for_each_entry_safe(st_ddb_idx, st_ddb_idx_tmp, &list_st, list) {
8531                 qla4xxx_conn_open(ha, st_ddb_idx->fw_ddb_idx);
8532         }
8533
8534         /* Wait to ensure all sendtargets are done for min 12 sec wait */
8535         tmo = ((ha->def_timeout > LOGIN_TOV) &&
8536                (ha->def_timeout < LOGIN_TOV * 10) ?
8537                ha->def_timeout : LOGIN_TOV);
8538
8539         DEBUG2(ql4_printk(KERN_INFO, ha,
8540                           "Default time to wait for build ddb %d\n", tmo));
8541
8542         wtime = jiffies + (HZ * tmo);
8543         do {
8544                 if (list_empty(&list_st))
8545                         break;
8546
8547                 qla4xxx_remove_failed_ddb(ha, &list_st);
8548                 schedule_timeout_uninterruptible(HZ / 10);
8549         } while (time_after(wtime, jiffies));
8550
8551
8552         qla4xxx_build_nt_list(ha, &list_nt, &list_st, is_reset);
8553
8554         qla4xxx_free_ddb_list(&list_st);
8555         qla4xxx_free_ddb_list(&list_nt);
8556
8557         qla4xxx_free_ddb_index(ha);
8558 }
8559
8560 /**
8561  * qla4xxx_wait_login_resp_boot_tgt -  Wait for iSCSI boot target login
8562  * response.
8563  * @ha: pointer to adapter structure
8564  *
8565  * When the boot entry is normal iSCSI target then DF_BOOT_TGT flag will be
8566  * set in DDB and we will wait for login response of boot targets during
8567  * probe.
8568  **/
8569 static void qla4xxx_wait_login_resp_boot_tgt(struct scsi_qla_host *ha)
8570 {
8571         struct ddb_entry *ddb_entry;
8572         struct dev_db_entry *fw_ddb_entry = NULL;
8573         dma_addr_t fw_ddb_entry_dma;
8574         unsigned long wtime;
8575         uint32_t ddb_state;
8576         int max_ddbs, idx, ret;
8577
8578         max_ddbs =  is_qla40XX(ha) ? MAX_DEV_DB_ENTRIES_40XX :
8579                                      MAX_DEV_DB_ENTRIES;
8580
8581         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
8582                                           &fw_ddb_entry_dma, GFP_KERNEL);
8583         if (!fw_ddb_entry) {
8584                 ql4_printk(KERN_ERR, ha,
8585                            "%s: Unable to allocate dma buffer\n", __func__);
8586                 goto exit_login_resp;
8587         }
8588
8589         wtime = jiffies + (HZ * BOOT_LOGIN_RESP_TOV);
8590
8591         for (idx = 0; idx < max_ddbs; idx++) {
8592                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
8593                 if (ddb_entry == NULL)
8594                         continue;
8595
8596                 if (test_bit(DF_BOOT_TGT, &ddb_entry->flags)) {
8597                         DEBUG2(ql4_printk(KERN_INFO, ha,
8598                                           "%s: DDB index [%d]\n", __func__,
8599                                           ddb_entry->fw_ddb_index));
8600                         do {
8601                                 ret = qla4xxx_get_fwddb_entry(ha,
8602                                                 ddb_entry->fw_ddb_index,
8603                                                 fw_ddb_entry, fw_ddb_entry_dma,
8604                                                 NULL, NULL, &ddb_state, NULL,
8605                                                 NULL, NULL);
8606                                 if (ret == QLA_ERROR)
8607                                         goto exit_login_resp;
8608
8609                                 if ((ddb_state == DDB_DS_SESSION_ACTIVE) ||
8610                                     (ddb_state == DDB_DS_SESSION_FAILED))
8611                                         break;
8612
8613                                 schedule_timeout_uninterruptible(HZ);
8614
8615                         } while ((time_after(wtime, jiffies)));
8616
8617                         if (!time_after(wtime, jiffies)) {
8618                                 DEBUG2(ql4_printk(KERN_INFO, ha,
8619                                                   "%s: Login response wait timer expired\n",
8620                                                   __func__));
8621                                  goto exit_login_resp;
8622                         }
8623                 }
8624         }
8625
8626 exit_login_resp:
8627         if (fw_ddb_entry)
8628                 dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
8629                                   fw_ddb_entry, fw_ddb_entry_dma);
8630 }
8631
8632 /**
8633  * qla4xxx_probe_adapter - callback function to probe HBA
8634  * @pdev: pointer to pci_dev structure
8635  * @ent: pointer to pci_device entry
8636  *
8637  * This routine will probe for Qlogic 4xxx iSCSI host adapters.
8638  * It returns zero if successful. It also initializes all data necessary for
8639  * the driver.
8640  **/
8641 static int qla4xxx_probe_adapter(struct pci_dev *pdev,
8642                                  const struct pci_device_id *ent)
8643 {
8644         int ret = -ENODEV, status;
8645         struct Scsi_Host *host;
8646         struct scsi_qla_host *ha;
8647         uint8_t init_retry_count = 0;
8648         char buf[34];
8649         struct qla4_8xxx_legacy_intr_set *nx_legacy_intr;
8650         uint32_t dev_state;
8651
8652         if (pci_enable_device(pdev))
8653                 return -1;
8654
8655         host = iscsi_host_alloc(&qla4xxx_driver_template, sizeof(*ha), 0);
8656         if (host == NULL) {
8657                 printk(KERN_WARNING
8658                        "qla4xxx: Couldn't allocate host from scsi layer!\n");
8659                 goto probe_disable_device;
8660         }
8661
8662         /* Clear our data area */
8663         ha = to_qla_host(host);
8664         memset(ha, 0, sizeof(*ha));
8665
8666         /* Save the information from PCI BIOS.  */
8667         ha->pdev = pdev;
8668         ha->host = host;
8669         ha->host_no = host->host_no;
8670         ha->func_num = PCI_FUNC(ha->pdev->devfn);
8671
8672         pci_enable_pcie_error_reporting(pdev);
8673
8674         /* Setup Runtime configurable options */
8675         if (is_qla8022(ha)) {
8676                 ha->isp_ops = &qla4_82xx_isp_ops;
8677                 ha->reg_tbl = (uint32_t *) qla4_82xx_reg_tbl;
8678                 ha->qdr_sn_window = -1;
8679                 ha->ddr_mn_window = -1;
8680                 ha->curr_window = 255;
8681                 nx_legacy_intr = &legacy_intr[ha->func_num];
8682                 ha->nx_legacy_intr.int_vec_bit = nx_legacy_intr->int_vec_bit;
8683                 ha->nx_legacy_intr.tgt_status_reg =
8684                         nx_legacy_intr->tgt_status_reg;
8685                 ha->nx_legacy_intr.tgt_mask_reg = nx_legacy_intr->tgt_mask_reg;
8686                 ha->nx_legacy_intr.pci_int_reg = nx_legacy_intr->pci_int_reg;
8687         } else if (is_qla8032(ha) || is_qla8042(ha)) {
8688                 ha->isp_ops = &qla4_83xx_isp_ops;
8689                 ha->reg_tbl = (uint32_t *)qla4_83xx_reg_tbl;
8690         } else {
8691                 ha->isp_ops = &qla4xxx_isp_ops;
8692         }
8693
8694         if (is_qla80XX(ha)) {
8695                 rwlock_init(&ha->hw_lock);
8696                 ha->pf_bit = ha->func_num << 16;
8697                 /* Set EEH reset type to fundamental if required by hba */
8698                 pdev->needs_freset = 1;
8699         }
8700
8701         /* Configure PCI I/O space. */
8702         ret = ha->isp_ops->iospace_config(ha);
8703         if (ret)
8704                 goto probe_failed_ioconfig;
8705
8706         ql4_printk(KERN_INFO, ha, "Found an ISP%04x, irq %d, iobase 0x%p\n",
8707                    pdev->device, pdev->irq, ha->reg);
8708
8709         qla4xxx_config_dma_addressing(ha);
8710
8711         /* Initialize lists and spinlocks. */
8712         INIT_LIST_HEAD(&ha->free_srb_q);
8713
8714         mutex_init(&ha->mbox_sem);
8715         mutex_init(&ha->chap_sem);
8716         init_completion(&ha->mbx_intr_comp);
8717         init_completion(&ha->disable_acb_comp);
8718         init_completion(&ha->idc_comp);
8719         init_completion(&ha->link_up_comp);
8720
8721         spin_lock_init(&ha->hardware_lock);
8722         spin_lock_init(&ha->work_lock);
8723
8724         /* Initialize work list */
8725         INIT_LIST_HEAD(&ha->work_list);
8726
8727         /* Allocate dma buffers */
8728         if (qla4xxx_mem_alloc(ha)) {
8729                 ql4_printk(KERN_WARNING, ha,
8730                     "[ERROR] Failed to allocate memory for adapter\n");
8731
8732                 ret = -ENOMEM;
8733                 goto probe_failed;
8734         }
8735
8736         host->cmd_per_lun = 3;
8737         host->max_channel = 0;
8738         host->max_lun = MAX_LUNS - 1;
8739         host->max_id = MAX_TARGETS;
8740         host->max_cmd_len = IOCB_MAX_CDB_LEN;
8741         host->can_queue = MAX_SRBS ;
8742         host->transportt = qla4xxx_scsi_transport;
8743
8744         pci_set_drvdata(pdev, ha);
8745
8746         ret = scsi_add_host(host, &pdev->dev);
8747         if (ret)
8748                 goto probe_failed;
8749
8750         if (is_qla80XX(ha))
8751                 qla4_8xxx_get_flash_info(ha);
8752
8753         if (is_qla8032(ha) || is_qla8042(ha)) {
8754                 qla4_83xx_read_reset_template(ha);
8755                 /*
8756                  * NOTE: If ql4dontresethba==1, set IDC_CTRL DONTRESET_BIT0.
8757                  * If DONRESET_BIT0 is set, drivers should not set dev_state
8758                  * to NEED_RESET. But if NEED_RESET is set, drivers should
8759                  * should honor the reset.
8760                  */
8761                 if (ql4xdontresethba == 1)
8762                         qla4_83xx_set_idc_dontreset(ha);
8763         }
8764
8765         /*
8766          * Initialize the Host adapter request/response queues and
8767          * firmware
8768          * NOTE: interrupts enabled upon successful completion
8769          */
8770         status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
8771
8772         /* Dont retry adapter initialization if IRQ allocation failed */
8773         if (is_qla80XX(ha) && (status == QLA_ERROR))
8774                 goto skip_retry_init;
8775
8776         while ((!test_bit(AF_ONLINE, &ha->flags)) &&
8777             init_retry_count++ < MAX_INIT_RETRIES) {
8778
8779                 if (is_qla80XX(ha)) {
8780                         ha->isp_ops->idc_lock(ha);
8781                         dev_state = qla4_8xxx_rd_direct(ha,
8782                                                         QLA8XXX_CRB_DEV_STATE);
8783                         ha->isp_ops->idc_unlock(ha);
8784                         if (dev_state == QLA8XXX_DEV_FAILED) {
8785                                 ql4_printk(KERN_WARNING, ha, "%s: don't retry "
8786                                     "initialize adapter. H/W is in failed state\n",
8787                                     __func__);
8788                                 break;
8789                         }
8790                 }
8791                 DEBUG2(printk("scsi: %s: retrying adapter initialization "
8792                               "(%d)\n", __func__, init_retry_count));
8793
8794                 if (ha->isp_ops->reset_chip(ha) == QLA_ERROR)
8795                         continue;
8796
8797                 status = qla4xxx_initialize_adapter(ha, INIT_ADAPTER);
8798                 if (is_qla80XX(ha) && (status == QLA_ERROR)) {
8799                         if (qla4_8xxx_check_init_adapter_retry(ha) == QLA_ERROR)
8800                                 goto skip_retry_init;
8801                 }
8802         }
8803
8804 skip_retry_init:
8805         if (!test_bit(AF_ONLINE, &ha->flags)) {
8806                 ql4_printk(KERN_WARNING, ha, "Failed to initialize adapter\n");
8807
8808                 if ((is_qla8022(ha) && ql4xdontresethba) ||
8809                     ((is_qla8032(ha) || is_qla8042(ha)) &&
8810                      qla4_83xx_idc_dontreset(ha))) {
8811                         /* Put the device in failed state. */
8812                         DEBUG2(printk(KERN_ERR "HW STATE: FAILED\n"));
8813                         ha->isp_ops->idc_lock(ha);
8814                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
8815                                             QLA8XXX_DEV_FAILED);
8816                         ha->isp_ops->idc_unlock(ha);
8817                 }
8818                 ret = -ENODEV;
8819                 goto remove_host;
8820         }
8821
8822         /* Startup the kernel thread for this host adapter. */
8823         DEBUG2(printk("scsi: %s: Starting kernel thread for "
8824                       "qla4xxx_dpc\n", __func__));
8825         sprintf(buf, "qla4xxx_%lu_dpc", ha->host_no);
8826         ha->dpc_thread = create_singlethread_workqueue(buf);
8827         if (!ha->dpc_thread) {
8828                 ql4_printk(KERN_WARNING, ha, "Unable to start DPC thread!\n");
8829                 ret = -ENODEV;
8830                 goto remove_host;
8831         }
8832         INIT_WORK(&ha->dpc_work, qla4xxx_do_dpc);
8833
8834         ha->task_wq = alloc_workqueue("qla4xxx_%lu_task", WQ_MEM_RECLAIM, 1,
8835                                       ha->host_no);
8836         if (!ha->task_wq) {
8837                 ql4_printk(KERN_WARNING, ha, "Unable to start task thread!\n");
8838                 ret = -ENODEV;
8839                 goto remove_host;
8840         }
8841
8842         /*
8843          * For ISP-8XXX, request_irqs is called in qla4_8xxx_load_risc
8844          * (which is called indirectly by qla4xxx_initialize_adapter),
8845          * so that irqs will be registered after crbinit but before
8846          * mbx_intr_enable.
8847          */
8848         if (is_qla40XX(ha)) {
8849                 ret = qla4xxx_request_irqs(ha);
8850                 if (ret) {
8851                         ql4_printk(KERN_WARNING, ha, "Failed to reserve "
8852                             "interrupt %d already in use.\n", pdev->irq);
8853                         goto remove_host;
8854                 }
8855         }
8856
8857         pci_save_state(ha->pdev);
8858         ha->isp_ops->enable_intrs(ha);
8859
8860         /* Start timer thread. */
8861         qla4xxx_start_timer(ha, 1);
8862
8863         set_bit(AF_INIT_DONE, &ha->flags);
8864
8865         qla4_8xxx_alloc_sysfs_attr(ha);
8866
8867         printk(KERN_INFO
8868                " QLogic iSCSI HBA Driver version: %s\n"
8869                "  QLogic ISP%04x @ %s, host#=%ld, fw=%02d.%02d.%02d.%02d\n",
8870                qla4xxx_version_str, ha->pdev->device, pci_name(ha->pdev),
8871                ha->host_no, ha->fw_info.fw_major, ha->fw_info.fw_minor,
8872                ha->fw_info.fw_patch, ha->fw_info.fw_build);
8873
8874         /* Set the driver version */
8875         if (is_qla80XX(ha))
8876                 qla4_8xxx_set_param(ha, SET_DRVR_VERSION);
8877
8878         if (qla4xxx_setup_boot_info(ha))
8879                 ql4_printk(KERN_ERR, ha,
8880                            "%s: No iSCSI boot target configured\n", __func__);
8881
8882         set_bit(DPC_SYSFS_DDB_EXPORT, &ha->dpc_flags);
8883         /* Perform the build ddb list and login to each */
8884         qla4xxx_build_ddb_list(ha, INIT_ADAPTER);
8885         iscsi_host_for_each_session(ha->host, qla4xxx_login_flash_ddb);
8886         qla4xxx_wait_login_resp_boot_tgt(ha);
8887
8888         qla4xxx_create_chap_list(ha);
8889
8890         qla4xxx_create_ifaces(ha);
8891         return 0;
8892
8893 remove_host:
8894         scsi_remove_host(ha->host);
8895
8896 probe_failed:
8897         qla4xxx_free_adapter(ha);
8898
8899 probe_failed_ioconfig:
8900         pci_disable_pcie_error_reporting(pdev);
8901         scsi_host_put(ha->host);
8902
8903 probe_disable_device:
8904         pci_disable_device(pdev);
8905
8906         return ret;
8907 }
8908
8909 /**
8910  * qla4xxx_prevent_other_port_reinit - prevent other port from re-initialize
8911  * @ha: pointer to adapter structure
8912  *
8913  * Mark the other ISP-4xxx port to indicate that the driver is being removed,
8914  * so that the other port will not re-initialize while in the process of
8915  * removing the ha due to driver unload or hba hotplug.
8916  **/
8917 static void qla4xxx_prevent_other_port_reinit(struct scsi_qla_host *ha)
8918 {
8919         struct scsi_qla_host *other_ha = NULL;
8920         struct pci_dev *other_pdev = NULL;
8921         int fn = ISP4XXX_PCI_FN_2;
8922
8923         /*iscsi function numbers for ISP4xxx is 1 and 3*/
8924         if (PCI_FUNC(ha->pdev->devfn) & BIT_1)
8925                 fn = ISP4XXX_PCI_FN_1;
8926
8927         other_pdev =
8928                 pci_get_domain_bus_and_slot(pci_domain_nr(ha->pdev->bus),
8929                 ha->pdev->bus->number, PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
8930                 fn));
8931
8932         /* Get other_ha if other_pdev is valid and state is enable*/
8933         if (other_pdev) {
8934                 if (atomic_read(&other_pdev->enable_cnt)) {
8935                         other_ha = pci_get_drvdata(other_pdev);
8936                         if (other_ha) {
8937                                 set_bit(AF_HA_REMOVAL, &other_ha->flags);
8938                                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: "
8939                                     "Prevent %s reinit\n", __func__,
8940                                     dev_name(&other_ha->pdev->dev)));
8941                         }
8942                 }
8943                 pci_dev_put(other_pdev);
8944         }
8945 }
8946
8947 static void qla4xxx_destroy_ddb(struct scsi_qla_host *ha,
8948                 struct ddb_entry *ddb_entry)
8949 {
8950         struct dev_db_entry *fw_ddb_entry = NULL;
8951         dma_addr_t fw_ddb_entry_dma;
8952         unsigned long wtime;
8953         uint32_t ddb_state;
8954         int options;
8955         int status;
8956
8957         options = LOGOUT_OPTION_CLOSE_SESSION;
8958         if (qla4xxx_session_logout_ddb(ha, ddb_entry, options) == QLA_ERROR) {
8959                 ql4_printk(KERN_ERR, ha, "%s: Logout failed\n", __func__);
8960                 goto clear_ddb;
8961         }
8962
8963         fw_ddb_entry = dma_alloc_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
8964                                           &fw_ddb_entry_dma, GFP_KERNEL);
8965         if (!fw_ddb_entry) {
8966                 ql4_printk(KERN_ERR, ha,
8967                            "%s: Unable to allocate dma buffer\n", __func__);
8968                 goto clear_ddb;
8969         }
8970
8971         wtime = jiffies + (HZ * LOGOUT_TOV);
8972         do {
8973                 status = qla4xxx_get_fwddb_entry(ha, ddb_entry->fw_ddb_index,
8974                                                  fw_ddb_entry, fw_ddb_entry_dma,
8975                                                  NULL, NULL, &ddb_state, NULL,
8976                                                  NULL, NULL);
8977                 if (status == QLA_ERROR)
8978                         goto free_ddb;
8979
8980                 if ((ddb_state == DDB_DS_NO_CONNECTION_ACTIVE) ||
8981                     (ddb_state == DDB_DS_SESSION_FAILED))
8982                         goto free_ddb;
8983
8984                 schedule_timeout_uninterruptible(HZ);
8985         } while ((time_after(wtime, jiffies)));
8986
8987 free_ddb:
8988         dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
8989                           fw_ddb_entry, fw_ddb_entry_dma);
8990 clear_ddb:
8991         qla4xxx_clear_ddb_entry(ha, ddb_entry->fw_ddb_index);
8992 }
8993
8994 static void qla4xxx_destroy_fw_ddb_session(struct scsi_qla_host *ha)
8995 {
8996         struct ddb_entry *ddb_entry;
8997         int idx;
8998
8999         for (idx = 0; idx < MAX_DDB_ENTRIES; idx++) {
9000
9001                 ddb_entry = qla4xxx_lookup_ddb_by_fw_index(ha, idx);
9002                 if ((ddb_entry != NULL) &&
9003                     (ddb_entry->ddb_type == FLASH_DDB)) {
9004
9005                         qla4xxx_destroy_ddb(ha, ddb_entry);
9006                         /*
9007                          * we have decremented the reference count of the driver
9008                          * when we setup the session to have the driver unload
9009                          * to be seamless without actually destroying the
9010                          * session
9011                          **/
9012                         try_module_get(qla4xxx_iscsi_transport.owner);
9013                         iscsi_destroy_endpoint(ddb_entry->conn->ep);
9014                         qla4xxx_free_ddb(ha, ddb_entry);
9015                         iscsi_session_teardown(ddb_entry->sess);
9016                 }
9017         }
9018 }
9019 /**
9020  * qla4xxx_remove_adapter - callback function to remove adapter.
9021  * @pdev: PCI device pointer
9022  **/
9023 static void qla4xxx_remove_adapter(struct pci_dev *pdev)
9024 {
9025         struct scsi_qla_host *ha;
9026
9027         /*
9028          * If the PCI device is disabled then it means probe_adapter had
9029          * failed and resources already cleaned up on probe_adapter exit.
9030          */
9031         if (!pci_is_enabled(pdev))
9032                 return;
9033
9034         ha = pci_get_drvdata(pdev);
9035
9036         if (is_qla40XX(ha))
9037                 qla4xxx_prevent_other_port_reinit(ha);
9038
9039         /* destroy iface from sysfs */
9040         qla4xxx_destroy_ifaces(ha);
9041
9042         if ((!ql4xdisablesysfsboot) && ha->boot_kset)
9043                 iscsi_boot_destroy_kset(ha->boot_kset);
9044
9045         qla4xxx_destroy_fw_ddb_session(ha);
9046         qla4_8xxx_free_sysfs_attr(ha);
9047
9048         qla4xxx_sysfs_ddb_remove(ha);
9049         scsi_remove_host(ha->host);
9050
9051         qla4xxx_free_adapter(ha);
9052
9053         scsi_host_put(ha->host);
9054
9055         pci_disable_pcie_error_reporting(pdev);
9056         pci_disable_device(pdev);
9057 }
9058
9059 /**
9060  * qla4xxx_config_dma_addressing() - Configure OS DMA addressing method.
9061  * @ha: HA context
9062  */
9063 static void qla4xxx_config_dma_addressing(struct scsi_qla_host *ha)
9064 {
9065         /* Update our PCI device dma_mask for full 64 bit mask */
9066         if (dma_set_mask_and_coherent(&ha->pdev->dev, DMA_BIT_MASK(64))) {
9067                 dev_dbg(&ha->pdev->dev,
9068                           "Failed to set 64 bit PCI consistent mask; "
9069                            "using 32 bit.\n");
9070                 dma_set_mask_and_coherent(&ha->pdev->dev, DMA_BIT_MASK(32));
9071         }
9072 }
9073
9074 static int qla4xxx_slave_alloc(struct scsi_device *sdev)
9075 {
9076         struct iscsi_cls_session *cls_sess;
9077         struct iscsi_session *sess;
9078         struct ddb_entry *ddb;
9079         int queue_depth = QL4_DEF_QDEPTH;
9080
9081         cls_sess = starget_to_session(sdev->sdev_target);
9082         sess = cls_sess->dd_data;
9083         ddb = sess->dd_data;
9084
9085         sdev->hostdata = ddb;
9086
9087         if (ql4xmaxqdepth != 0 && ql4xmaxqdepth <= 0xffffU)
9088                 queue_depth = ql4xmaxqdepth;
9089
9090         scsi_change_queue_depth(sdev, queue_depth);
9091         return 0;
9092 }
9093
9094 /**
9095  * qla4xxx_del_from_active_array - returns an active srb
9096  * @ha: Pointer to host adapter structure.
9097  * @index: index into the active_array
9098  *
9099  * This routine removes and returns the srb at the specified index
9100  **/
9101 struct srb *qla4xxx_del_from_active_array(struct scsi_qla_host *ha,
9102     uint32_t index)
9103 {
9104         struct srb *srb = NULL;
9105         struct scsi_cmnd *cmd = NULL;
9106
9107         cmd = scsi_host_find_tag(ha->host, index);
9108         if (!cmd)
9109                 return srb;
9110
9111         srb = (struct srb *)CMD_SP(cmd);
9112         if (!srb)
9113                 return srb;
9114
9115         /* update counters */
9116         if (srb->flags & SRB_DMA_VALID) {
9117                 ha->iocb_cnt -= srb->iocb_cnt;
9118                 if (srb->cmd)
9119                         srb->cmd->host_scribble =
9120                                 (unsigned char *)(unsigned long) MAX_SRBS;
9121         }
9122         return srb;
9123 }
9124
9125 /**
9126  * qla4xxx_eh_wait_on_command - waits for command to be returned by firmware
9127  * @ha: Pointer to host adapter structure.
9128  * @cmd: Scsi Command to wait on.
9129  *
9130  * This routine waits for the command to be returned by the Firmware
9131  * for some max time.
9132  **/
9133 static int qla4xxx_eh_wait_on_command(struct scsi_qla_host *ha,
9134                                       struct scsi_cmnd *cmd)
9135 {
9136         int done = 0;
9137         struct srb *rp;
9138         uint32_t max_wait_time = EH_WAIT_CMD_TOV;
9139         int ret = SUCCESS;
9140
9141         /* Dont wait on command if PCI error is being handled
9142          * by PCI AER driver
9143          */
9144         if (unlikely(pci_channel_offline(ha->pdev)) ||
9145             (test_bit(AF_EEH_BUSY, &ha->flags))) {
9146                 ql4_printk(KERN_WARNING, ha, "scsi%ld: Return from %s\n",
9147                     ha->host_no, __func__);
9148                 return ret;
9149         }
9150
9151         do {
9152                 /* Checking to see if its returned to OS */
9153                 rp = (struct srb *) CMD_SP(cmd);
9154                 if (rp == NULL) {
9155                         done++;
9156                         break;
9157                 }
9158
9159                 msleep(2000);
9160         } while (max_wait_time--);
9161
9162         return done;
9163 }
9164
9165 /**
9166  * qla4xxx_wait_for_hba_online - waits for HBA to come online
9167  * @ha: Pointer to host adapter structure
9168  **/
9169 static int qla4xxx_wait_for_hba_online(struct scsi_qla_host *ha)
9170 {
9171         unsigned long wait_online;
9172
9173         wait_online = jiffies + (HBA_ONLINE_TOV * HZ);
9174         while (time_before(jiffies, wait_online)) {
9175
9176                 if (adapter_up(ha))
9177                         return QLA_SUCCESS;
9178
9179                 msleep(2000);
9180         }
9181
9182         return QLA_ERROR;
9183 }
9184
9185 /**
9186  * qla4xxx_eh_wait_for_commands - wait for active cmds to finish.
9187  * @ha: pointer to HBA
9188  * @stgt: pointer to SCSI target
9189  * @sdev: pointer to SCSI device
9190  *
9191  * This function waits for all outstanding commands to a lun to complete. It
9192  * returns 0 if all pending commands are returned and 1 otherwise.
9193  **/
9194 static int qla4xxx_eh_wait_for_commands(struct scsi_qla_host *ha,
9195                                         struct scsi_target *stgt,
9196                                         struct scsi_device *sdev)
9197 {
9198         int cnt;
9199         int status = 0;
9200         struct scsi_cmnd *cmd;
9201
9202         /*
9203          * Waiting for all commands for the designated target or dev
9204          * in the active array
9205          */
9206         for (cnt = 0; cnt < ha->host->can_queue; cnt++) {
9207                 cmd = scsi_host_find_tag(ha->host, cnt);
9208                 if (cmd && stgt == scsi_target(cmd->device) &&
9209                     (!sdev || sdev == cmd->device)) {
9210                         if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
9211                                 status++;
9212                                 break;
9213                         }
9214                 }
9215         }
9216         return status;
9217 }
9218
9219 /**
9220  * qla4xxx_eh_abort - callback for abort task.
9221  * @cmd: Pointer to Linux's SCSI command structure
9222  *
9223  * This routine is called by the Linux OS to abort the specified
9224  * command.
9225  **/
9226 static int qla4xxx_eh_abort(struct scsi_cmnd *cmd)
9227 {
9228         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
9229         unsigned int id = cmd->device->id;
9230         uint64_t lun = cmd->device->lun;
9231         unsigned long flags;
9232         struct srb *srb = NULL;
9233         int ret = SUCCESS;
9234         int wait = 0;
9235         int rval;
9236
9237         ql4_printk(KERN_INFO, ha, "scsi%ld:%d:%llu: Abort command issued cmd=%p, cdb=0x%x\n",
9238                    ha->host_no, id, lun, cmd, cmd->cmnd[0]);
9239
9240         rval = qla4xxx_isp_check_reg(ha);
9241         if (rval != QLA_SUCCESS) {
9242                 ql4_printk(KERN_INFO, ha, "PCI/Register disconnect, exiting.\n");
9243                 return FAILED;
9244         }
9245
9246         spin_lock_irqsave(&ha->hardware_lock, flags);
9247         srb = (struct srb *) CMD_SP(cmd);
9248         if (!srb) {
9249                 spin_unlock_irqrestore(&ha->hardware_lock, flags);
9250                 ql4_printk(KERN_INFO, ha, "scsi%ld:%d:%llu: Specified command has already completed.\n",
9251                            ha->host_no, id, lun);
9252                 return SUCCESS;
9253         }
9254         kref_get(&srb->srb_ref);
9255         spin_unlock_irqrestore(&ha->hardware_lock, flags);
9256
9257         if (qla4xxx_abort_task(ha, srb) != QLA_SUCCESS) {
9258                 DEBUG3(printk("scsi%ld:%d:%llu: Abort_task mbx failed.\n",
9259                     ha->host_no, id, lun));
9260                 ret = FAILED;
9261         } else {
9262                 DEBUG3(printk("scsi%ld:%d:%llu: Abort_task mbx success.\n",
9263                     ha->host_no, id, lun));
9264                 wait = 1;
9265         }
9266
9267         kref_put(&srb->srb_ref, qla4xxx_srb_compl);
9268
9269         /* Wait for command to complete */
9270         if (wait) {
9271                 if (!qla4xxx_eh_wait_on_command(ha, cmd)) {
9272                         DEBUG2(printk("scsi%ld:%d:%llu: Abort handler timed out\n",
9273                             ha->host_no, id, lun));
9274                         ret = FAILED;
9275                 }
9276         }
9277
9278         ql4_printk(KERN_INFO, ha,
9279             "scsi%ld:%d:%llu: Abort command - %s\n",
9280             ha->host_no, id, lun, (ret == SUCCESS) ? "succeeded" : "failed");
9281
9282         return ret;
9283 }
9284
9285 /**
9286  * qla4xxx_eh_device_reset - callback for target reset.
9287  * @cmd: Pointer to Linux's SCSI command structure
9288  *
9289  * This routine is called by the Linux OS to reset all luns on the
9290  * specified target.
9291  **/
9292 static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd)
9293 {
9294         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
9295         struct ddb_entry *ddb_entry = cmd->device->hostdata;
9296         int ret = FAILED, stat;
9297         int rval;
9298
9299         if (!ddb_entry)
9300                 return ret;
9301
9302         ret = iscsi_block_scsi_eh(cmd);
9303         if (ret)
9304                 return ret;
9305         ret = FAILED;
9306
9307         ql4_printk(KERN_INFO, ha,
9308                    "scsi%ld:%d:%d:%llu: DEVICE RESET ISSUED.\n", ha->host_no,
9309                    cmd->device->channel, cmd->device->id, cmd->device->lun);
9310
9311         DEBUG2(printk(KERN_INFO
9312                       "scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x,"
9313                       "dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no,
9314                       cmd, jiffies, cmd->request->timeout / HZ,
9315                       ha->dpc_flags, cmd->result, cmd->allowed));
9316
9317         rval = qla4xxx_isp_check_reg(ha);
9318         if (rval != QLA_SUCCESS) {
9319                 ql4_printk(KERN_INFO, ha, "PCI/Register disconnect, exiting.\n");
9320                 return FAILED;
9321         }
9322
9323         /* FIXME: wait for hba to go online */
9324         stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun);
9325         if (stat != QLA_SUCCESS) {
9326                 ql4_printk(KERN_INFO, ha, "DEVICE RESET FAILED. %d\n", stat);
9327                 goto eh_dev_reset_done;
9328         }
9329
9330         if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
9331                                          cmd->device)) {
9332                 ql4_printk(KERN_INFO, ha,
9333                            "DEVICE RESET FAILED - waiting for "
9334                            "commands.\n");
9335                 goto eh_dev_reset_done;
9336         }
9337
9338         /* Send marker. */
9339         if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
9340                 MM_LUN_RESET) != QLA_SUCCESS)
9341                 goto eh_dev_reset_done;
9342
9343         ql4_printk(KERN_INFO, ha,
9344                    "scsi(%ld:%d:%d:%llu): DEVICE RESET SUCCEEDED.\n",
9345                    ha->host_no, cmd->device->channel, cmd->device->id,
9346                    cmd->device->lun);
9347
9348         ret = SUCCESS;
9349
9350 eh_dev_reset_done:
9351
9352         return ret;
9353 }
9354
9355 /**
9356  * qla4xxx_eh_target_reset - callback for target reset.
9357  * @cmd: Pointer to Linux's SCSI command structure
9358  *
9359  * This routine is called by the Linux OS to reset the target.
9360  **/
9361 static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd)
9362 {
9363         struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
9364         struct ddb_entry *ddb_entry = cmd->device->hostdata;
9365         int stat, ret;
9366         int rval;
9367
9368         if (!ddb_entry)
9369                 return FAILED;
9370
9371         ret = iscsi_block_scsi_eh(cmd);
9372         if (ret)
9373                 return ret;
9374
9375         starget_printk(KERN_INFO, scsi_target(cmd->device),
9376                        "WARM TARGET RESET ISSUED.\n");
9377
9378         DEBUG2(printk(KERN_INFO
9379                       "scsi%ld: TARGET_DEVICE_RESET cmd=%p jiffies = 0x%lx, "
9380                       "to=%x,dpc_flags=%lx, status=%x allowed=%d\n",
9381                       ha->host_no, cmd, jiffies, cmd->request->timeout / HZ,
9382                       ha->dpc_flags, cmd->result, cmd->allowed));
9383
9384         rval = qla4xxx_isp_check_reg(ha);
9385         if (rval != QLA_SUCCESS) {
9386                 ql4_printk(KERN_INFO, ha, "PCI/Register disconnect, exiting.\n");
9387                 return FAILED;
9388         }
9389
9390         stat = qla4xxx_reset_target(ha, ddb_entry);
9391         if (stat != QLA_SUCCESS) {
9392                 starget_printk(KERN_INFO, scsi_target(cmd->device),
9393                                "WARM TARGET RESET FAILED.\n");
9394                 return FAILED;
9395         }
9396
9397         if (qla4xxx_eh_wait_for_commands(ha, scsi_target(cmd->device),
9398                                          NULL)) {
9399                 starget_printk(KERN_INFO, scsi_target(cmd->device),
9400                                "WARM TARGET DEVICE RESET FAILED - "
9401                                "waiting for commands.\n");
9402                 return FAILED;
9403         }
9404
9405         /* Send marker. */
9406         if (qla4xxx_send_marker_iocb(ha, ddb_entry, cmd->device->lun,
9407                 MM_TGT_WARM_RESET) != QLA_SUCCESS) {
9408                 starget_printk(KERN_INFO, scsi_target(cmd->device),
9409                                "WARM TARGET DEVICE RESET FAILED - "
9410                                "marker iocb failed.\n");
9411                 return FAILED;
9412         }
9413
9414         starget_printk(KERN_INFO, scsi_target(cmd->device),
9415                        "WARM TARGET RESET SUCCEEDED.\n");
9416         return SUCCESS;
9417 }
9418
9419 /**
9420  * qla4xxx_is_eh_active - check if error handler is running
9421  * @shost: Pointer to SCSI Host struct
9422  *
9423  * This routine finds that if reset host is called in EH
9424  * scenario or from some application like sg_reset
9425  **/
9426 static int qla4xxx_is_eh_active(struct Scsi_Host *shost)
9427 {
9428         if (shost->shost_state == SHOST_RECOVERY)
9429                 return 1;
9430         return 0;
9431 }
9432
9433 /**
9434  * qla4xxx_eh_host_reset - kernel callback
9435  * @cmd: Pointer to Linux's SCSI command structure
9436  *
9437  * This routine is invoked by the Linux kernel to perform fatal error
9438  * recovery on the specified adapter.
9439  **/
9440 static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd)
9441 {
9442         int return_status = FAILED;
9443         struct scsi_qla_host *ha;
9444         int rval;
9445
9446         ha = to_qla_host(cmd->device->host);
9447
9448         rval = qla4xxx_isp_check_reg(ha);
9449         if (rval != QLA_SUCCESS) {
9450                 ql4_printk(KERN_INFO, ha, "PCI/Register disconnect, exiting.\n");
9451                 return FAILED;
9452         }
9453
9454         if ((is_qla8032(ha) || is_qla8042(ha)) && ql4xdontresethba)
9455                 qla4_83xx_set_idc_dontreset(ha);
9456
9457         /*
9458          * For ISP8324 and ISP8042, if IDC_CTRL DONTRESET_BIT0 is set by other
9459          * protocol drivers, we should not set device_state to NEED_RESET
9460          */
9461         if (ql4xdontresethba ||
9462             ((is_qla8032(ha) || is_qla8042(ha)) &&
9463              qla4_83xx_idc_dontreset(ha))) {
9464                 DEBUG2(printk("scsi%ld: %s: Don't Reset HBA\n",
9465                      ha->host_no, __func__));
9466
9467                 /* Clear outstanding srb in queues */
9468                 if (qla4xxx_is_eh_active(cmd->device->host))
9469                         qla4xxx_abort_active_cmds(ha, DID_ABORT << 16);
9470
9471                 return FAILED;
9472         }
9473
9474         ql4_printk(KERN_INFO, ha,
9475                    "scsi(%ld:%d:%d:%llu): HOST RESET ISSUED.\n", ha->host_no,
9476                    cmd->device->channel, cmd->device->id, cmd->device->lun);
9477
9478         if (qla4xxx_wait_for_hba_online(ha) != QLA_SUCCESS) {
9479                 DEBUG2(printk("scsi%ld:%d: %s: Unable to reset host.  Adapter "
9480                               "DEAD.\n", ha->host_no, cmd->device->channel,
9481                               __func__));
9482
9483                 return FAILED;
9484         }
9485
9486         if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
9487                 if (is_qla80XX(ha))
9488                         set_bit(DPC_RESET_HA_FW_CONTEXT, &ha->dpc_flags);
9489                 else
9490                         set_bit(DPC_RESET_HA, &ha->dpc_flags);
9491         }
9492
9493         if (qla4xxx_recover_adapter(ha) == QLA_SUCCESS)
9494                 return_status = SUCCESS;
9495
9496         ql4_printk(KERN_INFO, ha, "HOST RESET %s.\n",
9497                    return_status == FAILED ? "FAILED" : "SUCCEEDED");
9498
9499         return return_status;
9500 }
9501
9502 static int qla4xxx_context_reset(struct scsi_qla_host *ha)
9503 {
9504         uint32_t mbox_cmd[MBOX_REG_COUNT];
9505         uint32_t mbox_sts[MBOX_REG_COUNT];
9506         struct addr_ctrl_blk_def *acb = NULL;
9507         uint32_t acb_len = sizeof(struct addr_ctrl_blk_def);
9508         int rval = QLA_SUCCESS;
9509         dma_addr_t acb_dma;
9510
9511         acb = dma_alloc_coherent(&ha->pdev->dev,
9512                                  sizeof(struct addr_ctrl_blk_def),
9513                                  &acb_dma, GFP_KERNEL);
9514         if (!acb) {
9515                 ql4_printk(KERN_ERR, ha, "%s: Unable to alloc acb\n",
9516                            __func__);
9517                 rval = -ENOMEM;
9518                 goto exit_port_reset;
9519         }
9520
9521         memset(acb, 0, acb_len);
9522
9523         rval = qla4xxx_get_acb(ha, acb_dma, PRIMARI_ACB, acb_len);
9524         if (rval != QLA_SUCCESS) {
9525                 rval = -EIO;
9526                 goto exit_free_acb;
9527         }
9528
9529         rval = qla4xxx_disable_acb(ha);
9530         if (rval != QLA_SUCCESS) {
9531                 rval = -EIO;
9532                 goto exit_free_acb;
9533         }
9534
9535         wait_for_completion_timeout(&ha->disable_acb_comp,
9536                                     DISABLE_ACB_TOV * HZ);
9537
9538         rval = qla4xxx_set_acb(ha, &mbox_cmd[0], &mbox_sts[0], acb_dma);
9539         if (rval != QLA_SUCCESS) {
9540                 rval = -EIO;
9541                 goto exit_free_acb;
9542         }
9543
9544 exit_free_acb:
9545         dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk_def),
9546                           acb, acb_dma);
9547 exit_port_reset:
9548         DEBUG2(ql4_printk(KERN_INFO, ha, "%s %s\n", __func__,
9549                           rval == QLA_SUCCESS ? "SUCCEEDED" : "FAILED"));
9550         return rval;
9551 }
9552
9553 static int qla4xxx_host_reset(struct Scsi_Host *shost, int reset_type)
9554 {
9555         struct scsi_qla_host *ha = to_qla_host(shost);
9556         int rval = QLA_SUCCESS;
9557         uint32_t idc_ctrl;
9558
9559         if (ql4xdontresethba) {
9560                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: Don't Reset HBA\n",
9561                                   __func__));
9562                 rval = -EPERM;
9563                 goto exit_host_reset;
9564         }
9565
9566         if (test_bit(DPC_RESET_HA, &ha->dpc_flags))
9567                 goto recover_adapter;
9568
9569         switch (reset_type) {
9570         case SCSI_ADAPTER_RESET:
9571                 set_bit(DPC_RESET_HA, &ha->dpc_flags);
9572                 break;
9573         case SCSI_FIRMWARE_RESET:
9574                 if (!test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
9575                         if (is_qla80XX(ha))
9576                                 /* set firmware context reset */
9577                                 set_bit(DPC_RESET_HA_FW_CONTEXT,
9578                                         &ha->dpc_flags);
9579                         else {
9580                                 rval = qla4xxx_context_reset(ha);
9581                                 goto exit_host_reset;
9582                         }
9583                 }
9584                 break;
9585         }
9586
9587 recover_adapter:
9588         /* For ISP8324 and ISP8042 set graceful reset bit in IDC_DRV_CTRL if
9589          * reset is issued by application */
9590         if ((is_qla8032(ha) || is_qla8042(ha)) &&
9591             test_bit(DPC_RESET_HA, &ha->dpc_flags)) {
9592                 idc_ctrl = qla4_83xx_rd_reg(ha, QLA83XX_IDC_DRV_CTRL);
9593                 qla4_83xx_wr_reg(ha, QLA83XX_IDC_DRV_CTRL,
9594                                  (idc_ctrl | GRACEFUL_RESET_BIT1));
9595         }
9596
9597         rval = qla4xxx_recover_adapter(ha);
9598         if (rval != QLA_SUCCESS) {
9599                 DEBUG2(ql4_printk(KERN_INFO, ha, "%s: recover adapter fail\n",
9600                                   __func__));
9601                 rval = -EIO;
9602         }
9603
9604 exit_host_reset:
9605         return rval;
9606 }
9607
9608 /* PCI AER driver recovers from all correctable errors w/o
9609  * driver intervention. For uncorrectable errors PCI AER
9610  * driver calls the following device driver's callbacks
9611  *
9612  * - Fatal Errors - link_reset
9613  * - Non-Fatal Errors - driver's error_detected() which
9614  * returns CAN_RECOVER, NEED_RESET or DISCONNECT.
9615  *
9616  * PCI AER driver calls
9617  * CAN_RECOVER - driver's mmio_enabled(), mmio_enabled()
9618  *               returns RECOVERED or NEED_RESET if fw_hung
9619  * NEED_RESET - driver's slot_reset()
9620  * DISCONNECT - device is dead & cannot recover
9621  * RECOVERED - driver's resume()
9622  */
9623 static pci_ers_result_t
9624 qla4xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
9625 {
9626         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
9627
9628         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: error detected:state %x\n",
9629             ha->host_no, __func__, state);
9630
9631         if (!is_aer_supported(ha))
9632                 return PCI_ERS_RESULT_NONE;
9633
9634         switch (state) {
9635         case pci_channel_io_normal:
9636                 clear_bit(AF_EEH_BUSY, &ha->flags);
9637                 return PCI_ERS_RESULT_CAN_RECOVER;
9638         case pci_channel_io_frozen:
9639                 set_bit(AF_EEH_BUSY, &ha->flags);
9640                 qla4xxx_mailbox_premature_completion(ha);
9641                 qla4xxx_free_irqs(ha);
9642                 pci_disable_device(pdev);
9643                 /* Return back all IOs */
9644                 qla4xxx_abort_active_cmds(ha, DID_RESET << 16);
9645                 return PCI_ERS_RESULT_NEED_RESET;
9646         case pci_channel_io_perm_failure:
9647                 set_bit(AF_EEH_BUSY, &ha->flags);
9648                 set_bit(AF_PCI_CHANNEL_IO_PERM_FAILURE, &ha->flags);
9649                 qla4xxx_abort_active_cmds(ha, DID_NO_CONNECT << 16);
9650                 return PCI_ERS_RESULT_DISCONNECT;
9651         }
9652         return PCI_ERS_RESULT_NEED_RESET;
9653 }
9654
9655 /**
9656  * qla4xxx_pci_mmio_enabled() gets called if
9657  * qla4xxx_pci_error_detected() returns PCI_ERS_RESULT_CAN_RECOVER
9658  * and read/write to the device still works.
9659  * @pdev: PCI device pointer
9660  **/
9661 static pci_ers_result_t
9662 qla4xxx_pci_mmio_enabled(struct pci_dev *pdev)
9663 {
9664         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
9665
9666         if (!is_aer_supported(ha))
9667                 return PCI_ERS_RESULT_NONE;
9668
9669         return PCI_ERS_RESULT_RECOVERED;
9670 }
9671
9672 static uint32_t qla4_8xxx_error_recovery(struct scsi_qla_host *ha)
9673 {
9674         uint32_t rval = QLA_ERROR;
9675         int fn;
9676         struct pci_dev *other_pdev = NULL;
9677
9678         ql4_printk(KERN_WARNING, ha, "scsi%ld: In %s\n", ha->host_no, __func__);
9679
9680         set_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
9681
9682         if (test_bit(AF_ONLINE, &ha->flags)) {
9683                 clear_bit(AF_ONLINE, &ha->flags);
9684                 clear_bit(AF_LINK_UP, &ha->flags);
9685                 iscsi_host_for_each_session(ha->host, qla4xxx_fail_session);
9686                 qla4xxx_process_aen(ha, FLUSH_DDB_CHANGED_AENS);
9687         }
9688
9689         fn = PCI_FUNC(ha->pdev->devfn);
9690         if (is_qla8022(ha)) {
9691                 while (fn > 0) {
9692                         fn--;
9693                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Finding PCI device at func %x\n",
9694                                    ha->host_no, __func__, fn);
9695                         /* Get the pci device given the domain, bus,
9696                          * slot/function number */
9697                         other_pdev = pci_get_domain_bus_and_slot(
9698                                            pci_domain_nr(ha->pdev->bus),
9699                                            ha->pdev->bus->number,
9700                                            PCI_DEVFN(PCI_SLOT(ha->pdev->devfn),
9701                                            fn));
9702
9703                         if (!other_pdev)
9704                                 continue;
9705
9706                         if (atomic_read(&other_pdev->enable_cnt)) {
9707                                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: Found PCI func in enabled state%x\n",
9708                                            ha->host_no, __func__, fn);
9709                                 pci_dev_put(other_pdev);
9710                                 break;
9711                         }
9712                         pci_dev_put(other_pdev);
9713                 }
9714         } else {
9715                 /* this case is meant for ISP83xx/ISP84xx only */
9716                 if (qla4_83xx_can_perform_reset(ha)) {
9717                         /* reset fn as iSCSI is going to perform the reset */
9718                         fn = 0;
9719                 }
9720         }
9721
9722         /* The first function on the card, the reset owner will
9723          * start & initialize the firmware. The other functions
9724          * on the card will reset the firmware context
9725          */
9726         if (!fn) {
9727                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn being reset "
9728                     "0x%x is the owner\n", ha->host_no, __func__,
9729                     ha->pdev->devfn);
9730
9731                 ha->isp_ops->idc_lock(ha);
9732                 qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
9733                                     QLA8XXX_DEV_COLD);
9734                 ha->isp_ops->idc_unlock(ha);
9735
9736                 rval = qla4_8xxx_update_idc_reg(ha);
9737                 if (rval == QLA_ERROR) {
9738                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: FAILED\n",
9739                                    ha->host_no, __func__);
9740                         ha->isp_ops->idc_lock(ha);
9741                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
9742                                             QLA8XXX_DEV_FAILED);
9743                         ha->isp_ops->idc_unlock(ha);
9744                         goto exit_error_recovery;
9745                 }
9746
9747                 clear_bit(AF_FW_RECOVERY, &ha->flags);
9748                 rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
9749
9750                 if (rval != QLA_SUCCESS) {
9751                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
9752                             "FAILED\n", ha->host_no, __func__);
9753                         qla4xxx_free_irqs(ha);
9754                         ha->isp_ops->idc_lock(ha);
9755                         qla4_8xxx_clear_drv_active(ha);
9756                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
9757                                             QLA8XXX_DEV_FAILED);
9758                         ha->isp_ops->idc_unlock(ha);
9759                 } else {
9760                         ql4_printk(KERN_INFO, ha, "scsi%ld: %s: HW State: "
9761                             "READY\n", ha->host_no, __func__);
9762                         ha->isp_ops->idc_lock(ha);
9763                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DEV_STATE,
9764                                             QLA8XXX_DEV_READY);
9765                         /* Clear driver state register */
9766                         qla4_8xxx_wr_direct(ha, QLA8XXX_CRB_DRV_STATE, 0);
9767                         qla4_8xxx_set_drv_active(ha);
9768                         ha->isp_ops->idc_unlock(ha);
9769                         ha->isp_ops->enable_intrs(ha);
9770                 }
9771         } else {
9772                 ql4_printk(KERN_INFO, ha, "scsi%ld: %s: devfn 0x%x is not "
9773                     "the reset owner\n", ha->host_no, __func__,
9774                     ha->pdev->devfn);
9775                 if ((qla4_8xxx_rd_direct(ha, QLA8XXX_CRB_DEV_STATE) ==
9776                      QLA8XXX_DEV_READY)) {
9777                         clear_bit(AF_FW_RECOVERY, &ha->flags);
9778                         rval = qla4xxx_initialize_adapter(ha, RESET_ADAPTER);
9779                         if (rval == QLA_SUCCESS)
9780                                 ha->isp_ops->enable_intrs(ha);
9781                         else
9782                                 qla4xxx_free_irqs(ha);
9783
9784                         ha->isp_ops->idc_lock(ha);
9785                         qla4_8xxx_set_drv_active(ha);
9786                         ha->isp_ops->idc_unlock(ha);
9787                 }
9788         }
9789 exit_error_recovery:
9790         clear_bit(DPC_RESET_ACTIVE, &ha->dpc_flags);
9791         return rval;
9792 }
9793
9794 static pci_ers_result_t
9795 qla4xxx_pci_slot_reset(struct pci_dev *pdev)
9796 {
9797         pci_ers_result_t ret = PCI_ERS_RESULT_DISCONNECT;
9798         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
9799         int rc;
9800
9801         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: slot_reset\n",
9802             ha->host_no, __func__);
9803
9804         if (!is_aer_supported(ha))
9805                 return PCI_ERS_RESULT_NONE;
9806
9807         /* Restore the saved state of PCIe device -
9808          * BAR registers, PCI Config space, PCIX, MSI,
9809          * IOV states
9810          */
9811         pci_restore_state(pdev);
9812
9813         /* pci_restore_state() clears the saved_state flag of the device
9814          * save restored state which resets saved_state flag
9815          */
9816         pci_save_state(pdev);
9817
9818         /* Initialize device or resume if in suspended state */
9819         rc = pci_enable_device(pdev);
9820         if (rc) {
9821                 ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Can't re-enable "
9822                     "device after reset\n", ha->host_no, __func__);
9823                 goto exit_slot_reset;
9824         }
9825
9826         ha->isp_ops->disable_intrs(ha);
9827
9828         if (is_qla80XX(ha)) {
9829                 if (qla4_8xxx_error_recovery(ha) == QLA_SUCCESS) {
9830                         ret = PCI_ERS_RESULT_RECOVERED;
9831                         goto exit_slot_reset;
9832                 } else
9833                         goto exit_slot_reset;
9834         }
9835
9836 exit_slot_reset:
9837         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: Return=%x\n"
9838             "device after reset\n", ha->host_no, __func__, ret);
9839         return ret;
9840 }
9841
9842 static void
9843 qla4xxx_pci_resume(struct pci_dev *pdev)
9844 {
9845         struct scsi_qla_host *ha = pci_get_drvdata(pdev);
9846         int ret;
9847
9848         ql4_printk(KERN_WARNING, ha, "scsi%ld: %s: pci_resume\n",
9849             ha->host_no, __func__);
9850
9851         ret = qla4xxx_wait_for_hba_online(ha);
9852         if (ret != QLA_SUCCESS) {
9853                 ql4_printk(KERN_ERR, ha, "scsi%ld: %s: the device failed to "
9854                     "resume I/O from slot/link_reset\n", ha->host_no,
9855                      __func__);
9856         }
9857
9858         clear_bit(AF_EEH_BUSY, &ha->flags);
9859 }
9860
9861 static const struct pci_error_handlers qla4xxx_err_handler = {
9862         .error_detected = qla4xxx_pci_error_detected,
9863         .mmio_enabled = qla4xxx_pci_mmio_enabled,
9864         .slot_reset = qla4xxx_pci_slot_reset,
9865         .resume = qla4xxx_pci_resume,
9866 };
9867
9868 static struct pci_device_id qla4xxx_pci_tbl[] = {
9869         {
9870                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9871                 .device         = PCI_DEVICE_ID_QLOGIC_ISP4010,
9872                 .subvendor      = PCI_ANY_ID,
9873                 .subdevice      = PCI_ANY_ID,
9874         },
9875         {
9876                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9877                 .device         = PCI_DEVICE_ID_QLOGIC_ISP4022,
9878                 .subvendor      = PCI_ANY_ID,
9879                 .subdevice      = PCI_ANY_ID,
9880         },
9881         {
9882                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9883                 .device         = PCI_DEVICE_ID_QLOGIC_ISP4032,
9884                 .subvendor      = PCI_ANY_ID,
9885                 .subdevice      = PCI_ANY_ID,
9886         },
9887         {
9888                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9889                 .device         = PCI_DEVICE_ID_QLOGIC_ISP8022,
9890                 .subvendor      = PCI_ANY_ID,
9891                 .subdevice      = PCI_ANY_ID,
9892         },
9893         {
9894                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9895                 .device         = PCI_DEVICE_ID_QLOGIC_ISP8324,
9896                 .subvendor      = PCI_ANY_ID,
9897                 .subdevice      = PCI_ANY_ID,
9898         },
9899         {
9900                 .vendor         = PCI_VENDOR_ID_QLOGIC,
9901                 .device         = PCI_DEVICE_ID_QLOGIC_ISP8042,
9902                 .subvendor      = PCI_ANY_ID,
9903                 .subdevice      = PCI_ANY_ID,
9904         },
9905         {0, 0},
9906 };
9907 MODULE_DEVICE_TABLE(pci, qla4xxx_pci_tbl);
9908
9909 static struct pci_driver qla4xxx_pci_driver = {
9910         .name           = DRIVER_NAME,
9911         .id_table       = qla4xxx_pci_tbl,
9912         .probe          = qla4xxx_probe_adapter,
9913         .remove         = qla4xxx_remove_adapter,
9914         .err_handler = &qla4xxx_err_handler,
9915 };
9916
9917 static int __init qla4xxx_module_init(void)
9918 {
9919         int ret;
9920
9921         if (ql4xqfulltracking)
9922                 qla4xxx_driver_template.track_queue_depth = 1;
9923
9924         /* Allocate cache for SRBs. */
9925         srb_cachep = kmem_cache_create("qla4xxx_srbs", sizeof(struct srb), 0,
9926                                        SLAB_HWCACHE_ALIGN, NULL);
9927         if (srb_cachep == NULL) {
9928                 printk(KERN_ERR
9929                        "%s: Unable to allocate SRB cache..."
9930                        "Failing load!\n", DRIVER_NAME);
9931                 ret = -ENOMEM;
9932                 goto no_srp_cache;
9933         }
9934
9935         /* Derive version string. */
9936         strcpy(qla4xxx_version_str, QLA4XXX_DRIVER_VERSION);
9937         if (ql4xextended_error_logging)
9938                 strcat(qla4xxx_version_str, "-debug");
9939
9940         qla4xxx_scsi_transport =
9941                 iscsi_register_transport(&qla4xxx_iscsi_transport);
9942         if (!qla4xxx_scsi_transport){
9943                 ret = -ENODEV;
9944                 goto release_srb_cache;
9945         }
9946
9947         ret = pci_register_driver(&qla4xxx_pci_driver);
9948         if (ret)
9949                 goto unregister_transport;
9950
9951         printk(KERN_INFO "QLogic iSCSI HBA Driver\n");
9952         return 0;
9953
9954 unregister_transport:
9955         iscsi_unregister_transport(&qla4xxx_iscsi_transport);
9956 release_srb_cache:
9957         kmem_cache_destroy(srb_cachep);
9958 no_srp_cache:
9959         return ret;
9960 }
9961
9962 static void __exit qla4xxx_module_exit(void)
9963 {
9964         pci_unregister_driver(&qla4xxx_pci_driver);
9965         iscsi_unregister_transport(&qla4xxx_iscsi_transport);
9966         kmem_cache_destroy(srb_cachep);
9967 }
9968
9969 module_init(qla4xxx_module_init);
9970 module_exit(qla4xxx_module_exit);
9971
9972 MODULE_AUTHOR("QLogic Corporation");
9973 MODULE_DESCRIPTION("QLogic iSCSI HBA Driver");
9974 MODULE_LICENSE("GPL");
9975 MODULE_VERSION(QLA4XXX_DRIVER_VERSION);