drivers/scsi/qedi/qedi_main.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * QLogic iSCSI Offload Driver
   4  * Copyright (c) 2016 Cavium Inc.
   5  */
   6
   7 #include <linux/module.h>
   8 #include <linux/pci.h>
   9 #include <linux/kernel.h>
  10 #include <linux/if_arp.h>
  11 #include <scsi/iscsi_if.h>
  12 #include <linux/inet.h>
  13 #include <net/arp.h>
  14 #include <linux/list.h>
  15 #include <linux/kthread.h>
  16 #include <linux/mm.h>
  17 #include <linux/if_vlan.h>
  18 #include <linux/cpu.h>
  19 #include <linux/iscsi_boot_sysfs.h>
  20
  21 #include <scsi/scsi_cmnd.h>
  22 #include <scsi/scsi_device.h>
  23 #include <scsi/scsi_eh.h>
  24 #include <scsi/scsi_host.h>
  25 #include <scsi/scsi.h>
  26
  27 #include "qedi.h"
  28 #include "qedi_gbl.h"
  29 #include "qedi_iscsi.h"
  30
  31 static uint qedi_qed_debug;
  32 module_param(qedi_qed_debug, uint, 0644);
  33 MODULE_PARM_DESC(qedi_qed_debug, " QED debug level 0 (default)");
  34
  35 static uint qedi_fw_debug;
  36 module_param(qedi_fw_debug, uint, 0644);
  37 MODULE_PARM_DESC(qedi_fw_debug, " Firmware debug level 0(default) to 3");
  38
  39 uint qedi_dbg_log = QEDI_LOG_WARN | QEDI_LOG_SCSI_TM;
  40 module_param(qedi_dbg_log, uint, 0644);
  41 MODULE_PARM_DESC(qedi_dbg_log, " Default debug level");
  42
  43 uint qedi_io_tracing;
  44 module_param(qedi_io_tracing, uint, 0644);
  45 MODULE_PARM_DESC(qedi_io_tracing,
  46                  " Enable logging of SCSI requests/completions into trace buffer. (default off).");
  47
  48 static uint qedi_ll2_buf_size = 0x400;
  49 module_param(qedi_ll2_buf_size, uint, 0644);
  50 MODULE_PARM_DESC(qedi_ll2_buf_size,
  51                  "parameter to set ping packet size, default - 0x400, Jumbo packets - 0x2400.");
  52
  53 static uint qedi_flags_override;
  54 module_param(qedi_flags_override, uint, 0644);
  55 MODULE_PARM_DESC(qedi_flags_override, "Disable/Enable MFW error flags bits action.");
  56
  57 const struct qed_iscsi_ops *qedi_ops;
  58 static struct scsi_transport_template *qedi_scsi_transport;
  59 static struct pci_driver qedi_pci_driver;
  60 static DEFINE_PER_CPU(struct qedi_percpu_s, qedi_percpu);
  61 static LIST_HEAD(qedi_udev_list);
  62 /* Static function declaration */
  63 static int qedi_alloc_global_queues(struct qedi_ctx *qedi);
  64 static void qedi_free_global_queues(struct qedi_ctx *qedi);
  65 static struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid);
  66 static void qedi_reset_uio_rings(struct qedi_uio_dev *udev);
  67 static void qedi_ll2_free_skbs(struct qedi_ctx *qedi);
  68 static struct nvm_iscsi_block *qedi_get_nvram_block(struct qedi_ctx *qedi);
  69 static void qedi_recovery_handler(struct work_struct *work);
  70 static void qedi_schedule_hw_err_handler(void *dev,
  71                                          enum qed_hw_err_type err_type);
  72
  73 static int qedi_iscsi_event_cb(void *context, u8 fw_event_code, void *fw_handle)
  74 {
  75         struct qedi_ctx *qedi;
  76         struct qedi_endpoint *qedi_ep;
  77         struct iscsi_eqe_data *data;
  78         int rval = 0;
  79
  80         if (!context || !fw_handle) {
  81                 QEDI_ERR(NULL, "Recv event with ctx NULL\n");
  82                 return -EINVAL;
  83         }
  84
  85         qedi = (struct qedi_ctx *)context;
  86         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
  87                   "Recv Event %d fw_handle %p\n", fw_event_code, fw_handle);
  88
  89         data = (struct iscsi_eqe_data *)fw_handle;
  90         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
  91                   "icid=0x%x conn_id=0x%x err-code=0x%x error-pdu-opcode-reserved=0x%x\n",
  92                    data->icid, data->conn_id, data->error_code,
  93                    data->error_pdu_opcode_reserved);
  94
  95         qedi_ep = qedi->ep_tbl[data->icid];
  96
  97         if (!qedi_ep) {
  98                 QEDI_WARN(&qedi->dbg_ctx,
  99                           "Cannot process event, ep already disconnected, cid=0x%x\n",
 100                            data->icid);
 101                 WARN_ON(1);
 102                 return -ENODEV;
 103         }
 104
 105         switch (fw_event_code) {
 106         case ISCSI_EVENT_TYPE_ASYN_CONNECT_COMPLETE:
 107                 if (qedi_ep->state == EP_STATE_OFLDCONN_START)
 108                         qedi_ep->state = EP_STATE_OFLDCONN_COMPL;
 109
 110                 wake_up_interruptible(&qedi_ep->tcp_ofld_wait);
 111                 break;
 112         case ISCSI_EVENT_TYPE_ASYN_TERMINATE_DONE:
 113                 qedi_ep->state = EP_STATE_DISCONN_COMPL;
 114                 wake_up_interruptible(&qedi_ep->tcp_ofld_wait);
 115                 break;
 116         case ISCSI_EVENT_TYPE_ISCSI_CONN_ERROR:
 117                 qedi_process_iscsi_error(qedi_ep, data);
 118                 break;
 119         case ISCSI_EVENT_TYPE_ASYN_ABORT_RCVD:
 120         case ISCSI_EVENT_TYPE_ASYN_SYN_RCVD:
 121         case ISCSI_EVENT_TYPE_ASYN_MAX_RT_TIME:
 122         case ISCSI_EVENT_TYPE_ASYN_MAX_RT_CNT:
 123         case ISCSI_EVENT_TYPE_ASYN_MAX_KA_PROBES_CNT:
 124         case ISCSI_EVENT_TYPE_ASYN_FIN_WAIT2:
 125         case ISCSI_EVENT_TYPE_TCP_CONN_ERROR:
 126                 qedi_process_tcp_error(qedi_ep, data);
 127                 break;
 128         default:
 129                 QEDI_ERR(&qedi->dbg_ctx, "Recv Unknown Event %u\n",
 130                          fw_event_code);
 131         }
 132
 133         return rval;
 134 }
 135
 136 static int qedi_uio_open(struct uio_info *uinfo, struct inode *inode)
 137 {
 138         struct qedi_uio_dev *udev = uinfo->priv;
 139         struct qedi_ctx *qedi = udev->qedi;
 140
 141         if (!capable(CAP_NET_ADMIN))
 142                 return -EPERM;
 143
 144         if (udev->uio_dev != -1)
 145                 return -EBUSY;
 146
 147         rtnl_lock();
 148         udev->uio_dev = iminor(inode);
 149         qedi_reset_uio_rings(udev);
 150         set_bit(UIO_DEV_OPENED, &qedi->flags);
 151         rtnl_unlock();
 152
 153         return 0;
 154 }
 155
 156 static int qedi_uio_close(struct uio_info *uinfo, struct inode *inode)
 157 {
 158         struct qedi_uio_dev *udev = uinfo->priv;
 159         struct qedi_ctx *qedi = udev->qedi;
 160
 161         udev->uio_dev = -1;
 162         clear_bit(UIO_DEV_OPENED, &qedi->flags);
 163         qedi_ll2_free_skbs(qedi);
 164         return 0;
 165 }
 166
 167 static void __qedi_free_uio_rings(struct qedi_uio_dev *udev)
 168 {
 169         if (udev->uctrl) {
 170                 free_page((unsigned long)udev->uctrl);
 171                 udev->uctrl = NULL;
 172         }
 173
 174         if (udev->ll2_ring) {
 175                 free_page((unsigned long)udev->ll2_ring);
 176                 udev->ll2_ring = NULL;
 177         }
 178
 179         if (udev->ll2_buf) {
 180                 free_pages((unsigned long)udev->ll2_buf, 2);
 181                 udev->ll2_buf = NULL;
 182         }
 183 }
 184
 185 static void __qedi_free_uio(struct qedi_uio_dev *udev)
 186 {
 187         uio_unregister_device(&udev->qedi_uinfo);
 188
 189         __qedi_free_uio_rings(udev);
 190
 191         pci_dev_put(udev->pdev);
 192         kfree(udev);
 193 }
 194
 195 static void qedi_free_uio(struct qedi_uio_dev *udev)
 196 {
 197         if (!udev)
 198                 return;
 199
 200         list_del_init(&udev->list);
 201         __qedi_free_uio(udev);
 202 }
 203
 204 static void qedi_reset_uio_rings(struct qedi_uio_dev *udev)
 205 {
 206         struct qedi_ctx *qedi = NULL;
 207         struct qedi_uio_ctrl *uctrl = NULL;
 208
 209         qedi = udev->qedi;
 210         uctrl = udev->uctrl;
 211
 212         spin_lock_bh(&qedi->ll2_lock);
 213         uctrl->host_rx_cons = 0;
 214         uctrl->hw_rx_prod = 0;
 215         uctrl->hw_rx_bd_prod = 0;
 216         uctrl->host_rx_bd_cons = 0;
 217
 218         memset(udev->ll2_ring, 0, udev->ll2_ring_size);
 219         memset(udev->ll2_buf, 0, udev->ll2_buf_size);
 220         spin_unlock_bh(&qedi->ll2_lock);
 221 }
 222
 223 static int __qedi_alloc_uio_rings(struct qedi_uio_dev *udev)
 224 {
 225         int rc = 0;
 226
 227         if (udev->ll2_ring || udev->ll2_buf)
 228                 return rc;
 229
 230         /* Memory for control area.  */
 231         udev->uctrl = (void *)get_zeroed_page(GFP_KERNEL);
 232         if (!udev->uctrl)
 233                 return -ENOMEM;
 234
 235         /* Allocating memory for LL2 ring  */
 236         udev->ll2_ring_size = QEDI_PAGE_SIZE;
 237         udev->ll2_ring = (void *)get_zeroed_page(GFP_KERNEL | __GFP_COMP);
 238         if (!udev->ll2_ring) {
 239                 rc = -ENOMEM;
 240                 goto exit_alloc_ring;
 241         }
 242
 243         /* Allocating memory for Tx/Rx pkt buffer */
 244         udev->ll2_buf_size = TX_RX_RING * qedi_ll2_buf_size;
 245         udev->ll2_buf_size = QEDI_PAGE_ALIGN(udev->ll2_buf_size);
 246         udev->ll2_buf = (void *)__get_free_pages(GFP_KERNEL | __GFP_COMP |
 247                                                  __GFP_ZERO, 2);
 248         if (!udev->ll2_buf) {
 249                 rc = -ENOMEM;
 250                 goto exit_alloc_buf;
 251         }
 252         return rc;
 253
 254 exit_alloc_buf:
 255         free_page((unsigned long)udev->ll2_ring);
 256         udev->ll2_ring = NULL;
 257 exit_alloc_ring:
 258         return rc;
 259 }
 260
 261 static int qedi_alloc_uio_rings(struct qedi_ctx *qedi)
 262 {
 263         struct qedi_uio_dev *udev = NULL;
 264         int rc = 0;
 265
 266         list_for_each_entry(udev, &qedi_udev_list, list) {
 267                 if (udev->pdev == qedi->pdev) {
 268                         udev->qedi = qedi;
 269                         if (__qedi_alloc_uio_rings(udev)) {
 270                                 udev->qedi = NULL;
 271                                 return -ENOMEM;
 272                         }
 273                         qedi->udev = udev;
 274                         return 0;
 275                 }
 276         }
 277
 278         udev = kzalloc(sizeof(*udev), GFP_KERNEL);
 279         if (!udev)
 280                 goto err_udev;
 281
 282         udev->uio_dev = -1;
 283
 284         udev->qedi = qedi;
 285         udev->pdev = qedi->pdev;
 286
 287         rc = __qedi_alloc_uio_rings(udev);
 288         if (rc)
 289                 goto err_uctrl;
 290
 291         list_add(&udev->list, &qedi_udev_list);
 292
 293         pci_dev_get(udev->pdev);
 294         qedi->udev = udev;
 295
 296         udev->tx_pkt = udev->ll2_buf;
 297         udev->rx_pkt = udev->ll2_buf + qedi_ll2_buf_size;
 298         return 0;
 299
 300  err_uctrl:
 301         kfree(udev);
 302  err_udev:
 303         return -ENOMEM;
 304 }
 305
 306 static int qedi_init_uio(struct qedi_ctx *qedi)
 307 {
 308         struct qedi_uio_dev *udev = qedi->udev;
 309         struct uio_info *uinfo;
 310         int ret = 0;
 311
 312         if (!udev)
 313                 return -ENOMEM;
 314
 315         uinfo = &udev->qedi_uinfo;
 316
 317         uinfo->mem[0].addr = (unsigned long)udev->uctrl;
 318         uinfo->mem[0].size = sizeof(struct qedi_uio_ctrl);
 319         uinfo->mem[0].memtype = UIO_MEM_LOGICAL;
 320
 321         uinfo->mem[1].addr = (unsigned long)udev->ll2_ring;
 322         uinfo->mem[1].size = udev->ll2_ring_size;
 323         uinfo->mem[1].memtype = UIO_MEM_LOGICAL;
 324
 325         uinfo->mem[2].addr = (unsigned long)udev->ll2_buf;
 326         uinfo->mem[2].size = udev->ll2_buf_size;
 327         uinfo->mem[2].memtype = UIO_MEM_LOGICAL;
 328
 329         uinfo->name = "qedi_uio";
 330         uinfo->version = QEDI_MODULE_VERSION;
 331         uinfo->irq = UIO_IRQ_CUSTOM;
 332
 333         uinfo->open = qedi_uio_open;
 334         uinfo->release = qedi_uio_close;
 335
 336         if (udev->uio_dev == -1) {
 337                 if (!uinfo->priv) {
 338                         uinfo->priv = udev;
 339
 340                         ret = uio_register_device(&udev->pdev->dev, uinfo);
 341                         if (ret) {
 342                                 QEDI_ERR(&qedi->dbg_ctx,
 343                                          "UIO registration failed\n");
 344                         }
 345                 }
 346         }
 347
 348         return ret;
 349 }
 350
 351 static int qedi_alloc_and_init_sb(struct qedi_ctx *qedi,
 352                                   struct qed_sb_info *sb_info, u16 sb_id)
 353 {
 354         struct status_block_e4 *sb_virt;
 355         dma_addr_t sb_phys;
 356         int ret;
 357
 358         sb_virt = dma_alloc_coherent(&qedi->pdev->dev,
 359                                      sizeof(struct status_block_e4), &sb_phys,
 360                                      GFP_KERNEL);
 361         if (!sb_virt) {
 362                 QEDI_ERR(&qedi->dbg_ctx,
 363                          "Status block allocation failed for id = %d.\n",
 364                           sb_id);
 365                 return -ENOMEM;
 366         }
 367
 368         ret = qedi_ops->common->sb_init(qedi->cdev, sb_info, sb_virt, sb_phys,
 369                                        sb_id, QED_SB_TYPE_STORAGE);
 370         if (ret) {
 371                 QEDI_ERR(&qedi->dbg_ctx,
 372                          "Status block initialization failed for id = %d.\n",
 373                           sb_id);
 374                 return ret;
 375         }
 376
 377         return 0;
 378 }
 379
 380 static void qedi_free_sb(struct qedi_ctx *qedi)
 381 {
 382         struct qed_sb_info *sb_info;
 383         int id;
 384
 385         for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
 386                 sb_info = &qedi->sb_array[id];
 387                 if (sb_info->sb_virt)
 388                         dma_free_coherent(&qedi->pdev->dev,
 389                                           sizeof(*sb_info->sb_virt),
 390                                           (void *)sb_info->sb_virt,
 391                                           sb_info->sb_phys);
 392         }
 393 }
 394
 395 static void qedi_free_fp(struct qedi_ctx *qedi)
 396 {
 397         kfree(qedi->fp_array);
 398         kfree(qedi->sb_array);
 399 }
 400
 401 static void qedi_destroy_fp(struct qedi_ctx *qedi)
 402 {
 403         qedi_free_sb(qedi);
 404         qedi_free_fp(qedi);
 405 }
 406
 407 static int qedi_alloc_fp(struct qedi_ctx *qedi)
 408 {
 409         int ret = 0;
 410
 411         qedi->fp_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi),
 412                                  sizeof(struct qedi_fastpath), GFP_KERNEL);
 413         if (!qedi->fp_array) {
 414                 QEDI_ERR(&qedi->dbg_ctx,
 415                          "fastpath fp array allocation failed.\n");
 416                 return -ENOMEM;
 417         }
 418
 419         qedi->sb_array = kcalloc(MIN_NUM_CPUS_MSIX(qedi),
 420                                  sizeof(struct qed_sb_info), GFP_KERNEL);
 421         if (!qedi->sb_array) {
 422                 QEDI_ERR(&qedi->dbg_ctx,
 423                          "fastpath sb array allocation failed.\n");
 424                 ret = -ENOMEM;
 425                 goto free_fp;
 426         }
 427
 428         return ret;
 429
 430 free_fp:
 431         qedi_free_fp(qedi);
 432         return ret;
 433 }
 434
 435 static void qedi_int_fp(struct qedi_ctx *qedi)
 436 {
 437         struct qedi_fastpath *fp;
 438         int id;
 439
 440         memset(qedi->fp_array, 0, MIN_NUM_CPUS_MSIX(qedi) *
 441                sizeof(*qedi->fp_array));
 442         memset(qedi->sb_array, 0, MIN_NUM_CPUS_MSIX(qedi) *
 443                sizeof(*qedi->sb_array));
 444
 445         for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
 446                 fp = &qedi->fp_array[id];
 447                 fp->sb_info = &qedi->sb_array[id];
 448                 fp->sb_id = id;
 449                 fp->qedi = qedi;
 450                 snprintf(fp->name, sizeof(fp->name), "%s-fp-%d",
 451                          "qedi", id);
 452
 453                 /* fp_array[i] ---- irq cookie
 454                  * So init data which is needed in int ctx
 455                  */
 456         }
 457 }
 458
 459 static int qedi_prepare_fp(struct qedi_ctx *qedi)
 460 {
 461         struct qedi_fastpath *fp;
 462         int id, ret = 0;
 463
 464         ret = qedi_alloc_fp(qedi);
 465         if (ret)
 466                 goto err;
 467
 468         qedi_int_fp(qedi);
 469
 470         for (id = 0; id < MIN_NUM_CPUS_MSIX(qedi); id++) {
 471                 fp = &qedi->fp_array[id];
 472                 ret = qedi_alloc_and_init_sb(qedi, fp->sb_info, fp->sb_id);
 473                 if (ret) {
 474                         QEDI_ERR(&qedi->dbg_ctx,
 475                                  "SB allocation and initialization failed.\n");
 476                         ret = -EIO;
 477                         goto err_init;
 478                 }
 479         }
 480
 481         return 0;
 482
 483 err_init:
 484         qedi_free_sb(qedi);
 485         qedi_free_fp(qedi);
 486 err:
 487         return ret;
 488 }
 489
 490 static int qedi_setup_cid_que(struct qedi_ctx *qedi)
 491 {
 492         int i;
 493
 494         qedi->cid_que.cid_que_base = kmalloc_array(qedi->max_active_conns,
 495                                                    sizeof(u32), GFP_KERNEL);
 496         if (!qedi->cid_que.cid_que_base)
 497                 return -ENOMEM;
 498
 499         qedi->cid_que.conn_cid_tbl = kmalloc_array(qedi->max_active_conns,
 500                                                    sizeof(struct qedi_conn *),
 501                                                    GFP_KERNEL);
 502         if (!qedi->cid_que.conn_cid_tbl) {
 503                 kfree(qedi->cid_que.cid_que_base);
 504                 qedi->cid_que.cid_que_base = NULL;
 505                 return -ENOMEM;
 506         }
 507
 508         qedi->cid_que.cid_que = (u32 *)qedi->cid_que.cid_que_base;
 509         qedi->cid_que.cid_q_prod_idx = 0;
 510         qedi->cid_que.cid_q_cons_idx = 0;
 511         qedi->cid_que.cid_q_max_idx = qedi->max_active_conns;
 512         qedi->cid_que.cid_free_cnt = qedi->max_active_conns;
 513
 514         for (i = 0; i < qedi->max_active_conns; i++) {
 515                 qedi->cid_que.cid_que[i] = i;
 516                 qedi->cid_que.conn_cid_tbl[i] = NULL;
 517         }
 518
 519         return 0;
 520 }
 521
 522 static void qedi_release_cid_que(struct qedi_ctx *qedi)
 523 {
 524         kfree(qedi->cid_que.cid_que_base);
 525         qedi->cid_que.cid_que_base = NULL;
 526
 527         kfree(qedi->cid_que.conn_cid_tbl);
 528         qedi->cid_que.conn_cid_tbl = NULL;
 529 }
 530
 531 static int qedi_init_id_tbl(struct qedi_portid_tbl *id_tbl, u16 size,
 532                             u16 start_id, u16 next)
 533 {
 534         id_tbl->start = start_id;
 535         id_tbl->max = size;
 536         id_tbl->next = next;
 537         spin_lock_init(&id_tbl->lock);
 538         id_tbl->table = kcalloc(BITS_TO_LONGS(size), sizeof(long), GFP_KERNEL);
 539         if (!id_tbl->table)
 540                 return -ENOMEM;
 541
 542         return 0;
 543 }
 544
 545 static void qedi_free_id_tbl(struct qedi_portid_tbl *id_tbl)
 546 {
 547         kfree(id_tbl->table);
 548         id_tbl->table = NULL;
 549 }
 550
 551 int qedi_alloc_id(struct qedi_portid_tbl *id_tbl, u16 id)
 552 {
 553         int ret = -1;
 554
 555         id -= id_tbl->start;
 556         if (id >= id_tbl->max)
 557                 return ret;
 558
 559         spin_lock(&id_tbl->lock);
 560         if (!test_bit(id, id_tbl->table)) {
 561                 set_bit(id, id_tbl->table);
 562                 ret = 0;
 563         }
 564         spin_unlock(&id_tbl->lock);
 565         return ret;
 566 }
 567
 568 u16 qedi_alloc_new_id(struct qedi_portid_tbl *id_tbl)
 569 {
 570         u16 id;
 571
 572         spin_lock(&id_tbl->lock);
 573         id = find_next_zero_bit(id_tbl->table, id_tbl->max, id_tbl->next);
 574         if (id >= id_tbl->max) {
 575                 id = QEDI_LOCAL_PORT_INVALID;
 576                 if (id_tbl->next != 0) {
 577                         id = find_first_zero_bit(id_tbl->table, id_tbl->next);
 578                         if (id >= id_tbl->next)
 579                                 id = QEDI_LOCAL_PORT_INVALID;
 580                 }
 581         }
 582
 583         if (id < id_tbl->max) {
 584                 set_bit(id, id_tbl->table);
 585                 id_tbl->next = (id + 1) & (id_tbl->max - 1);
 586                 id += id_tbl->start;
 587         }
 588
 589         spin_unlock(&id_tbl->lock);
 590
 591         return id;
 592 }
 593
 594 void qedi_free_id(struct qedi_portid_tbl *id_tbl, u16 id)
 595 {
 596         if (id == QEDI_LOCAL_PORT_INVALID)
 597                 return;
 598
 599         id -= id_tbl->start;
 600         if (id >= id_tbl->max)
 601                 return;
 602
 603         clear_bit(id, id_tbl->table);
 604 }
 605
 606 static void qedi_cm_free_mem(struct qedi_ctx *qedi)
 607 {
 608         kfree(qedi->ep_tbl);
 609         qedi->ep_tbl = NULL;
 610         qedi_free_id_tbl(&qedi->lcl_port_tbl);
 611 }
 612
 613 static int qedi_cm_alloc_mem(struct qedi_ctx *qedi)
 614 {
 615         u16 port_id;
 616
 617         qedi->ep_tbl = kzalloc((qedi->max_active_conns *
 618                                 sizeof(struct qedi_endpoint *)), GFP_KERNEL);
 619         if (!qedi->ep_tbl)
 620                 return -ENOMEM;
 621         port_id = prandom_u32() % QEDI_LOCAL_PORT_RANGE;
 622         if (qedi_init_id_tbl(&qedi->lcl_port_tbl, QEDI_LOCAL_PORT_RANGE,
 623                              QEDI_LOCAL_PORT_MIN, port_id)) {
 624                 qedi_cm_free_mem(qedi);
 625                 return -ENOMEM;
 626         }
 627
 628         return 0;
 629 }
 630
 631 static struct qedi_ctx *qedi_host_alloc(struct pci_dev *pdev)
 632 {
 633         struct Scsi_Host *shost;
 634         struct qedi_ctx *qedi = NULL;
 635
 636         shost = iscsi_host_alloc(&qedi_host_template,
 637                                  sizeof(struct qedi_ctx), 0);
 638         if (!shost) {
 639                 QEDI_ERR(NULL, "Could not allocate shost\n");
 640                 goto exit_setup_shost;
 641         }
 642
 643         shost->max_id = QEDI_MAX_ISCSI_CONNS_PER_HBA - 1;
 644         shost->max_channel = 0;
 645         shost->max_lun = ~0;
 646         shost->max_cmd_len = 16;
 647         shost->transportt = qedi_scsi_transport;
 648
 649         qedi = iscsi_host_priv(shost);
 650         memset(qedi, 0, sizeof(*qedi));
 651         qedi->shost = shost;
 652         qedi->dbg_ctx.host_no = shost->host_no;
 653         qedi->pdev = pdev;
 654         qedi->dbg_ctx.pdev = pdev;
 655         qedi->max_active_conns = ISCSI_MAX_SESS_PER_HBA;
 656         qedi->max_sqes = QEDI_SQ_SIZE;
 657
 658         shost->nr_hw_queues = MIN_NUM_CPUS_MSIX(qedi);
 659
 660         pci_set_drvdata(pdev, qedi);
 661
 662 exit_setup_shost:
 663         return qedi;
 664 }
 665
 666 static int qedi_ll2_rx(void *cookie, struct sk_buff *skb, u32 arg1, u32 arg2)
 667 {
 668         struct qedi_ctx *qedi = (struct qedi_ctx *)cookie;
 669         struct skb_work_list *work;
 670         struct ethhdr *eh;
 671
 672         if (!qedi) {
 673                 QEDI_ERR(NULL, "qedi is NULL\n");
 674                 return -1;
 675         }
 676
 677         if (!test_bit(UIO_DEV_OPENED, &qedi->flags)) {
 678                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_UIO,
 679                           "UIO DEV is not opened\n");
 680                 kfree_skb(skb);
 681                 return 0;
 682         }
 683
 684         eh = (struct ethhdr *)skb->data;
 685         /* Undo VLAN encapsulation */
 686         if (eh->h_proto == htons(ETH_P_8021Q)) {
 687                 memmove((u8 *)eh + VLAN_HLEN, eh, ETH_ALEN * 2);
 688                 eh = (struct ethhdr *)skb_pull(skb, VLAN_HLEN);
 689                 skb_reset_mac_header(skb);
 690         }
 691
 692         /* Filter out non FIP/FCoE frames here to free them faster */
 693         if (eh->h_proto != htons(ETH_P_ARP) &&
 694             eh->h_proto != htons(ETH_P_IP) &&
 695             eh->h_proto != htons(ETH_P_IPV6)) {
 696                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2,
 697                           "Dropping frame ethertype [0x%x] len [0x%x].\n",
 698                           eh->h_proto, skb->len);
 699                 kfree_skb(skb);
 700                 return 0;
 701         }
 702
 703         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2,
 704                   "Allowed frame ethertype [0x%x] len [0x%x].\n",
 705                   eh->h_proto, skb->len);
 706
 707         work = kzalloc(sizeof(*work), GFP_ATOMIC);
 708         if (!work) {
 709                 QEDI_WARN(&qedi->dbg_ctx,
 710                           "Could not allocate work so dropping frame.\n");
 711                 kfree_skb(skb);
 712                 return 0;
 713         }
 714
 715         INIT_LIST_HEAD(&work->list);
 716         work->skb = skb;
 717
 718         if (skb_vlan_tag_present(skb))
 719                 work->vlan_id = skb_vlan_tag_get(skb);
 720
 721         if (work->vlan_id)
 722                 __vlan_insert_tag(work->skb, htons(ETH_P_8021Q), work->vlan_id);
 723
 724         spin_lock_bh(&qedi->ll2_lock);
 725         list_add_tail(&work->list, &qedi->ll2_skb_list);
 726         spin_unlock_bh(&qedi->ll2_lock);
 727
 728         wake_up_process(qedi->ll2_recv_thread);
 729
 730         return 0;
 731 }
 732
 733 /* map this skb to iscsiuio mmaped region */
 734 static int qedi_ll2_process_skb(struct qedi_ctx *qedi, struct sk_buff *skb,
 735                                 u16 vlan_id)
 736 {
 737         struct qedi_uio_dev *udev = NULL;
 738         struct qedi_uio_ctrl *uctrl = NULL;
 739         struct qedi_rx_bd rxbd;
 740         struct qedi_rx_bd *p_rxbd;
 741         u32 rx_bd_prod;
 742         void *pkt;
 743         int len = 0;
 744         u32 prod;
 745
 746         if (!qedi) {
 747                 QEDI_ERR(NULL, "qedi is NULL\n");
 748                 return -1;
 749         }
 750
 751         udev = qedi->udev;
 752         uctrl = udev->uctrl;
 753
 754         ++uctrl->hw_rx_prod_cnt;
 755         prod = (uctrl->hw_rx_prod + 1) % RX_RING;
 756
 757         pkt = udev->rx_pkt + (prod * qedi_ll2_buf_size);
 758         len = min_t(u32, skb->len, (u32)qedi_ll2_buf_size);
 759         memcpy(pkt, skb->data, len);
 760
 761         memset(&rxbd, 0, sizeof(rxbd));
 762         rxbd.rx_pkt_index = prod;
 763         rxbd.rx_pkt_len = len;
 764         rxbd.vlan_id = vlan_id;
 765
 766         uctrl->hw_rx_bd_prod = (uctrl->hw_rx_bd_prod + 1) % QEDI_NUM_RX_BD;
 767         rx_bd_prod = uctrl->hw_rx_bd_prod;
 768         p_rxbd = (struct qedi_rx_bd *)udev->ll2_ring;
 769         p_rxbd += rx_bd_prod;
 770
 771         memcpy(p_rxbd, &rxbd, sizeof(rxbd));
 772
 773         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2,
 774                   "hw_rx_prod [%d] prod [%d] hw_rx_bd_prod [%d] rx_pkt_idx [%d] rx_len [%d].\n",
 775                   uctrl->hw_rx_prod, prod, uctrl->hw_rx_bd_prod,
 776                   rxbd.rx_pkt_index, rxbd.rx_pkt_len);
 777         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_LL2,
 778                   "host_rx_cons [%d] hw_rx_bd_cons [%d].\n",
 779                   uctrl->host_rx_cons, uctrl->host_rx_bd_cons);
 780
 781         uctrl->hw_rx_prod = prod;
 782
 783         /* notify the iscsiuio about new packet */
 784         uio_event_notify(&udev->qedi_uinfo);
 785
 786         return 0;
 787 }
 788
 789 static void qedi_ll2_free_skbs(struct qedi_ctx *qedi)
 790 {
 791         struct skb_work_list *work, *work_tmp;
 792
 793         spin_lock_bh(&qedi->ll2_lock);
 794         list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list, list) {
 795                 list_del(&work->list);
 796                 kfree_skb(work->skb);
 797                 kfree(work);
 798         }
 799         spin_unlock_bh(&qedi->ll2_lock);
 800 }
 801
 802 static int qedi_ll2_recv_thread(void *arg)
 803 {
 804         struct qedi_ctx *qedi = (struct qedi_ctx *)arg;
 805         struct skb_work_list *work, *work_tmp;
 806
 807         set_user_nice(current, -20);
 808
 809         while (!kthread_should_stop()) {
 810                 spin_lock_bh(&qedi->ll2_lock);
 811                 list_for_each_entry_safe(work, work_tmp, &qedi->ll2_skb_list,
 812                                          list) {
 813                         list_del(&work->list);
 814                         qedi_ll2_process_skb(qedi, work->skb, work->vlan_id);
 815                         kfree_skb(work->skb);
 816                         kfree(work);
 817                 }
 818                 set_current_state(TASK_INTERRUPTIBLE);
 819                 spin_unlock_bh(&qedi->ll2_lock);
 820                 schedule();
 821         }
 822
 823         __set_current_state(TASK_RUNNING);
 824         return 0;
 825 }
 826
 827 static int qedi_set_iscsi_pf_param(struct qedi_ctx *qedi)
 828 {
 829         u8 num_sq_pages;
 830         u32 log_page_size;
 831         int rval = 0;
 832
 833
 834         num_sq_pages = (MAX_OUTSTANDING_TASKS_PER_CON * 8) / QEDI_PAGE_SIZE;
 835
 836         qedi->num_queues = MIN_NUM_CPUS_MSIX(qedi);
 837
 838         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
 839                   "Number of CQ count is %d\n", qedi->num_queues);
 840
 841         memset(&qedi->pf_params.iscsi_pf_params, 0,
 842                sizeof(qedi->pf_params.iscsi_pf_params));
 843
 844         qedi->p_cpuq = dma_alloc_coherent(&qedi->pdev->dev,
 845                         qedi->num_queues * sizeof(struct qedi_glbl_q_params),
 846                         &qedi->hw_p_cpuq, GFP_KERNEL);
 847         if (!qedi->p_cpuq) {
 848                 QEDI_ERR(&qedi->dbg_ctx, "dma_alloc_coherent fail\n");
 849                 rval = -1;
 850                 goto err_alloc_mem;
 851         }
 852
 853         rval = qedi_alloc_global_queues(qedi);
 854         if (rval) {
 855                 QEDI_ERR(&qedi->dbg_ctx, "Global queue allocation failed.\n");
 856                 rval = -1;
 857                 goto err_alloc_mem;
 858         }
 859
 860         qedi->pf_params.iscsi_pf_params.num_cons = QEDI_MAX_ISCSI_CONNS_PER_HBA;
 861         qedi->pf_params.iscsi_pf_params.num_tasks = QEDI_MAX_ISCSI_TASK;
 862         qedi->pf_params.iscsi_pf_params.half_way_close_timeout = 10;
 863         qedi->pf_params.iscsi_pf_params.num_sq_pages_in_ring = num_sq_pages;
 864         qedi->pf_params.iscsi_pf_params.num_r2tq_pages_in_ring = num_sq_pages;
 865         qedi->pf_params.iscsi_pf_params.num_uhq_pages_in_ring = num_sq_pages;
 866         qedi->pf_params.iscsi_pf_params.num_queues = qedi->num_queues;
 867         qedi->pf_params.iscsi_pf_params.debug_mode = qedi_fw_debug;
 868         qedi->pf_params.iscsi_pf_params.two_msl_timer = 4000;
 869         qedi->pf_params.iscsi_pf_params.max_fin_rt = 2;
 870
 871         for (log_page_size = 0 ; log_page_size < 32 ; log_page_size++) {
 872                 if ((1 << log_page_size) == QEDI_PAGE_SIZE)
 873                         break;
 874         }
 875         qedi->pf_params.iscsi_pf_params.log_page_size = log_page_size;
 876
 877         qedi->pf_params.iscsi_pf_params.glbl_q_params_addr =
 878                                                            (u64)qedi->hw_p_cpuq;
 879
 880         /* RQ BDQ initializations.
 881          * rq_num_entries: suggested value for Initiator is 16 (4KB RQ)
 882          * rqe_log_size: 8 for 256B RQE
 883          */
 884         qedi->pf_params.iscsi_pf_params.rqe_log_size = 8;
 885         /* BDQ address and size */
 886         qedi->pf_params.iscsi_pf_params.bdq_pbl_base_addr[BDQ_ID_RQ] =
 887                                                         qedi->bdq_pbl_list_dma;
 888         qedi->pf_params.iscsi_pf_params.bdq_pbl_num_entries[BDQ_ID_RQ] =
 889                                                 qedi->bdq_pbl_list_num_entries;
 890         qedi->pf_params.iscsi_pf_params.rq_buffer_size = QEDI_BDQ_BUF_SIZE;
 891
 892         /* cq_num_entries: num_tasks + rq_num_entries */
 893         qedi->pf_params.iscsi_pf_params.cq_num_entries = 2048;
 894
 895         qedi->pf_params.iscsi_pf_params.gl_rq_pi = QEDI_PROTO_CQ_PROD_IDX;
 896         qedi->pf_params.iscsi_pf_params.gl_cmd_pi = 1;
 897
 898 err_alloc_mem:
 899         return rval;
 900 }
 901
 902 /* Free DMA coherent memory for array of queue pointers we pass to qed */
 903 static void qedi_free_iscsi_pf_param(struct qedi_ctx *qedi)
 904 {
 905         size_t size = 0;
 906
 907         if (qedi->p_cpuq) {
 908                 size = qedi->num_queues * sizeof(struct qedi_glbl_q_params);
 909                 dma_free_coherent(&qedi->pdev->dev, size, qedi->p_cpuq,
 910                                     qedi->hw_p_cpuq);
 911         }
 912
 913         qedi_free_global_queues(qedi);
 914
 915         kfree(qedi->global_queues);
 916 }
 917
 918 static void qedi_get_boot_tgt_info(struct nvm_iscsi_block *block,
 919                                    struct qedi_boot_target *tgt, u8 index)
 920 {
 921         u32 ipv6_en;
 922
 923         ipv6_en = !!(block->generic.ctrl_flags &
 924                      NVM_ISCSI_CFG_GEN_IPV6_ENABLED);
 925
 926         snprintf(tgt->iscsi_name, sizeof(tgt->iscsi_name), "%s",
 927                  block->target[index].target_name.byte);
 928
 929         tgt->ipv6_en = ipv6_en;
 930
 931         if (ipv6_en)
 932                 snprintf(tgt->ip_addr, IPV6_LEN, "%pI6\n",
 933                          block->target[index].ipv6_addr.byte);
 934         else
 935                 snprintf(tgt->ip_addr, IPV4_LEN, "%pI4\n",
 936                          block->target[index].ipv4_addr.byte);
 937 }
 938
 939 static int qedi_find_boot_info(struct qedi_ctx *qedi,
 940                                struct qed_mfw_tlv_iscsi *iscsi,
 941                                struct nvm_iscsi_block *block)
 942 {
 943         struct qedi_boot_target *pri_tgt = NULL, *sec_tgt = NULL;
 944         u32 pri_ctrl_flags = 0, sec_ctrl_flags = 0, found = 0;
 945         struct iscsi_cls_session *cls_sess;
 946         struct iscsi_cls_conn *cls_conn;
 947         struct qedi_conn *qedi_conn;
 948         struct iscsi_session *sess;
 949         struct iscsi_conn *conn;
 950         char ep_ip_addr[64];
 951         int i, ret = 0;
 952
 953         pri_ctrl_flags = !!(block->target[0].ctrl_flags &
 954                                         NVM_ISCSI_CFG_TARGET_ENABLED);
 955         if (pri_ctrl_flags) {
 956                 pri_tgt = kzalloc(sizeof(*pri_tgt), GFP_KERNEL);
 957                 if (!pri_tgt)
 958                         return -1;
 959                 qedi_get_boot_tgt_info(block, pri_tgt, 0);
 960         }
 961
 962         sec_ctrl_flags = !!(block->target[1].ctrl_flags &
 963                                         NVM_ISCSI_CFG_TARGET_ENABLED);
 964         if (sec_ctrl_flags) {
 965                 sec_tgt = kzalloc(sizeof(*sec_tgt), GFP_KERNEL);
 966                 if (!sec_tgt) {
 967                         ret = -1;
 968                         goto free_tgt;
 969                 }
 970                 qedi_get_boot_tgt_info(block, sec_tgt, 1);
 971         }
 972
 973         for (i = 0; i < qedi->max_active_conns; i++) {
 974                 qedi_conn = qedi_get_conn_from_id(qedi, i);
 975                 if (!qedi_conn)
 976                         continue;
 977
 978                 if (qedi_conn->ep->ip_type == TCP_IPV4)
 979                         snprintf(ep_ip_addr, IPV4_LEN, "%pI4\n",
 980                                  qedi_conn->ep->dst_addr);
 981                 else
 982                         snprintf(ep_ip_addr, IPV6_LEN, "%pI6\n",
 983                                  qedi_conn->ep->dst_addr);
 984
 985                 cls_conn = qedi_conn->cls_conn;
 986                 conn = cls_conn->dd_data;
 987                 cls_sess = iscsi_conn_to_session(cls_conn);
 988                 sess = cls_sess->dd_data;
 989
 990                 if (!iscsi_is_session_online(cls_sess))
 991                         continue;
 992
 993                 if (!sess->targetname)
 994                         continue;
 995
 996                 if (pri_ctrl_flags) {
 997                         if (!strcmp(pri_tgt->iscsi_name, sess->targetname) &&
 998                             !strcmp(pri_tgt->ip_addr, ep_ip_addr)) {
 999                                 found = 1;
1000                                 break;
1001                         }
1002                 }
1003
1004                 if (sec_ctrl_flags) {
1005                         if (!strcmp(sec_tgt->iscsi_name, sess->targetname) &&
1006                             !strcmp(sec_tgt->ip_addr, ep_ip_addr)) {
1007                                 found = 1;
1008                                 break;
1009                         }
1010                 }
1011         }
1012
1013         if (found) {
1014                 if (conn->hdrdgst_en) {
1015                         iscsi->header_digest_set = true;
1016                         iscsi->header_digest = 1;
1017                 }
1018
1019                 if (conn->datadgst_en) {
1020                         iscsi->data_digest_set = true;
1021                         iscsi->data_digest = 1;
1022                 }
1023                 iscsi->boot_taget_portal_set = true;
1024                 iscsi->boot_taget_portal = sess->tpgt;
1025
1026         } else {
1027                 ret = -1;
1028         }
1029
1030         if (sec_ctrl_flags)
1031                 kfree(sec_tgt);
1032 free_tgt:
1033         if (pri_ctrl_flags)
1034                 kfree(pri_tgt);
1035
1036         return ret;
1037 }
1038
1039 static void qedi_get_generic_tlv_data(void *dev, struct qed_generic_tlvs *data)
1040 {
1041         struct qedi_ctx *qedi;
1042
1043         if (!dev) {
1044                 QEDI_INFO(NULL, QEDI_LOG_EVT,
1045                           "dev is NULL so ignoring get_generic_tlv_data request.\n");
1046                 return;
1047         }
1048         qedi = (struct qedi_ctx *)dev;
1049
1050         memset(data, 0, sizeof(struct qed_generic_tlvs));
1051         ether_addr_copy(data->mac[0], qedi->mac);
1052 }
1053
1054 /*
1055  * Protocol TLV handler
1056  */
1057 static void qedi_get_protocol_tlv_data(void *dev, void *data)
1058 {
1059         struct qed_mfw_tlv_iscsi *iscsi = data;
1060         struct qed_iscsi_stats *fw_iscsi_stats;
1061         struct nvm_iscsi_block *block = NULL;
1062         u32 chap_en = 0, mchap_en = 0;
1063         struct qedi_ctx *qedi = dev;
1064         int rval = 0;
1065
1066         fw_iscsi_stats = kmalloc(sizeof(*fw_iscsi_stats), GFP_KERNEL);
1067         if (!fw_iscsi_stats) {
1068                 QEDI_ERR(&qedi->dbg_ctx,
1069                          "Could not allocate memory for fw_iscsi_stats.\n");
1070                 goto exit_get_data;
1071         }
1072
1073         mutex_lock(&qedi->stats_lock);
1074         /* Query firmware for offload stats */
1075         qedi_ops->get_stats(qedi->cdev, fw_iscsi_stats);
1076         mutex_unlock(&qedi->stats_lock);
1077
1078         iscsi->rx_frames_set = true;
1079         iscsi->rx_frames = fw_iscsi_stats->iscsi_rx_packet_cnt;
1080         iscsi->rx_bytes_set = true;
1081         iscsi->rx_bytes = fw_iscsi_stats->iscsi_rx_bytes_cnt;
1082         iscsi->tx_frames_set = true;
1083         iscsi->tx_frames = fw_iscsi_stats->iscsi_tx_packet_cnt;
1084         iscsi->tx_bytes_set = true;
1085         iscsi->tx_bytes = fw_iscsi_stats->iscsi_tx_bytes_cnt;
1086         iscsi->frame_size_set = true;
1087         iscsi->frame_size = qedi->ll2_mtu;
1088         block = qedi_get_nvram_block(qedi);
1089         if (block) {
1090                 chap_en = !!(block->generic.ctrl_flags &
1091                              NVM_ISCSI_CFG_GEN_CHAP_ENABLED);
1092                 mchap_en = !!(block->generic.ctrl_flags &
1093                               NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED);
1094
1095                 iscsi->auth_method_set = (chap_en || mchap_en) ? true : false;
1096                 iscsi->auth_method = 1;
1097                 if (chap_en)
1098                         iscsi->auth_method = 2;
1099                 if (mchap_en)
1100                         iscsi->auth_method = 3;
1101
1102                 iscsi->tx_desc_size_set = true;
1103                 iscsi->tx_desc_size = QEDI_SQ_SIZE;
1104                 iscsi->rx_desc_size_set = true;
1105                 iscsi->rx_desc_size = QEDI_CQ_SIZE;
1106
1107                 /* tpgt, hdr digest, data digest */
1108                 rval = qedi_find_boot_info(qedi, iscsi, block);
1109                 if (rval)
1110                         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1111                                   "Boot target not set");
1112         }
1113
1114         kfree(fw_iscsi_stats);
1115 exit_get_data:
1116         return;
1117 }
1118
1119 void qedi_schedule_hw_err_handler(void *dev,
1120                                   enum qed_hw_err_type err_type)
1121 {
1122         struct qedi_ctx *qedi = (struct qedi_ctx *)dev;
1123         unsigned long override_flags = qedi_flags_override;
1124
1125         if (override_flags && test_bit(QEDI_ERR_OVERRIDE_EN, &override_flags))
1126                 qedi->qedi_err_flags = qedi_flags_override;
1127
1128         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1129                   "HW error handler scheduled, err=%d err_flags=0x%x\n",
1130                   err_type, qedi->qedi_err_flags);
1131
1132         switch (err_type) {
1133         case QED_HW_ERR_FAN_FAIL:
1134                 schedule_delayed_work(&qedi->board_disable_work, 0);
1135                 break;
1136         case QED_HW_ERR_MFW_RESP_FAIL:
1137         case QED_HW_ERR_HW_ATTN:
1138         case QED_HW_ERR_DMAE_FAIL:
1139         case QED_HW_ERR_RAMROD_FAIL:
1140         case QED_HW_ERR_FW_ASSERT:
1141                 /* Prevent HW attentions from being reasserted */
1142                 if (test_bit(QEDI_ERR_ATTN_CLR_EN, &qedi->qedi_err_flags))
1143                         qedi_ops->common->attn_clr_enable(qedi->cdev, true);
1144
1145                 if (err_type == QED_HW_ERR_RAMROD_FAIL &&
1146                     test_bit(QEDI_ERR_IS_RECOVERABLE, &qedi->qedi_err_flags))
1147                         qedi_ops->common->recovery_process(qedi->cdev);
1148
1149                 break;
1150         default:
1151                 break;
1152         }
1153 }
1154
1155 static void qedi_schedule_recovery_handler(void *dev)
1156 {
1157         struct qedi_ctx *qedi = dev;
1158
1159         QEDI_ERR(&qedi->dbg_ctx, "Recovery handler scheduled.\n");
1160
1161         if (test_and_set_bit(QEDI_IN_RECOVERY, &qedi->flags))
1162                 return;
1163
1164         atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
1165
1166         schedule_delayed_work(&qedi->recovery_work, 0);
1167 }
1168
1169 static void qedi_set_conn_recovery(struct iscsi_cls_session *cls_session)
1170 {
1171         struct iscsi_session *session = cls_session->dd_data;
1172         struct iscsi_conn *conn = session->leadconn;
1173         struct qedi_conn *qedi_conn = conn->dd_data;
1174
1175         qedi_start_conn_recovery(qedi_conn->qedi, qedi_conn);
1176 }
1177
1178 static void qedi_link_update(void *dev, struct qed_link_output *link)
1179 {
1180         struct qedi_ctx *qedi = (struct qedi_ctx *)dev;
1181
1182         if (link->link_up) {
1183                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "Link Up event.\n");
1184                 atomic_set(&qedi->link_state, QEDI_LINK_UP);
1185         } else {
1186                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1187                           "Link Down event.\n");
1188                 atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
1189                 iscsi_host_for_each_session(qedi->shost, qedi_set_conn_recovery);
1190         }
1191 }
1192
1193 static struct qed_iscsi_cb_ops qedi_cb_ops = {
1194         {
1195                 .link_update =          qedi_link_update,
1196                 .schedule_recovery_handler = qedi_schedule_recovery_handler,
1197                 .schedule_hw_err_handler = qedi_schedule_hw_err_handler,
1198                 .get_protocol_tlv_data = qedi_get_protocol_tlv_data,
1199                 .get_generic_tlv_data = qedi_get_generic_tlv_data,
1200         }
1201 };
1202
1203 static int qedi_queue_cqe(struct qedi_ctx *qedi, union iscsi_cqe *cqe,
1204                           u16 que_idx, struct qedi_percpu_s *p)
1205 {
1206         struct qedi_work *qedi_work;
1207         struct qedi_conn *q_conn;
1208         struct qedi_cmd *qedi_cmd;
1209         u32 iscsi_cid;
1210         int rc = 0;
1211
1212         iscsi_cid  = cqe->cqe_common.conn_id;
1213         q_conn = qedi->cid_que.conn_cid_tbl[iscsi_cid];
1214         if (!q_conn) {
1215                 QEDI_WARN(&qedi->dbg_ctx,
1216                           "Session no longer exists for cid=0x%x!!\n",
1217                           iscsi_cid);
1218                 return -1;
1219         }
1220
1221         switch (cqe->cqe_common.cqe_type) {
1222         case ISCSI_CQE_TYPE_SOLICITED:
1223         case ISCSI_CQE_TYPE_SOLICITED_WITH_SENSE:
1224                 qedi_cmd = qedi_get_cmd_from_tid(qedi, cqe->cqe_solicited.itid);
1225                 if (!qedi_cmd) {
1226                         rc = -1;
1227                         break;
1228                 }
1229                 INIT_LIST_HEAD(&qedi_cmd->cqe_work.list);
1230                 qedi_cmd->cqe_work.qedi = qedi;
1231                 memcpy(&qedi_cmd->cqe_work.cqe, cqe, sizeof(union iscsi_cqe));
1232                 qedi_cmd->cqe_work.que_idx = que_idx;
1233                 qedi_cmd->cqe_work.is_solicited = true;
1234                 list_add_tail(&qedi_cmd->cqe_work.list, &p->work_list);
1235                 break;
1236         case ISCSI_CQE_TYPE_UNSOLICITED:
1237         case ISCSI_CQE_TYPE_DUMMY:
1238         case ISCSI_CQE_TYPE_TASK_CLEANUP:
1239                 qedi_work = kzalloc(sizeof(*qedi_work), GFP_ATOMIC);
1240                 if (!qedi_work) {
1241                         rc = -1;
1242                         break;
1243                 }
1244                 INIT_LIST_HEAD(&qedi_work->list);
1245                 qedi_work->qedi = qedi;
1246                 memcpy(&qedi_work->cqe, cqe, sizeof(union iscsi_cqe));
1247                 qedi_work->que_idx = que_idx;
1248                 qedi_work->is_solicited = false;
1249                 list_add_tail(&qedi_work->list, &p->work_list);
1250                 break;
1251         default:
1252                 rc = -1;
1253                 QEDI_ERR(&qedi->dbg_ctx, "FW Error cqe.\n");
1254         }
1255         return rc;
1256 }
1257
1258 static bool qedi_process_completions(struct qedi_fastpath *fp)
1259 {
1260         struct qedi_ctx *qedi = fp->qedi;
1261         struct qed_sb_info *sb_info = fp->sb_info;
1262         struct status_block_e4 *sb = sb_info->sb_virt;
1263         struct qedi_percpu_s *p = NULL;
1264         struct global_queue *que;
1265         u16 prod_idx;
1266         unsigned long flags;
1267         union iscsi_cqe *cqe;
1268         int cpu;
1269         int ret;
1270
1271         /* Get the current firmware producer index */
1272         prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX];
1273
1274         if (prod_idx >= QEDI_CQ_SIZE)
1275                 prod_idx = prod_idx % QEDI_CQ_SIZE;
1276
1277         que = qedi->global_queues[fp->sb_id];
1278         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,
1279                   "Before: global queue=%p prod_idx=%d cons_idx=%d, sb_id=%d\n",
1280                   que, prod_idx, que->cq_cons_idx, fp->sb_id);
1281
1282         qedi->intr_cpu = fp->sb_id;
1283         cpu = smp_processor_id();
1284         p = &per_cpu(qedi_percpu, cpu);
1285
1286         if (unlikely(!p->iothread))
1287                 WARN_ON(1);
1288
1289         spin_lock_irqsave(&p->p_work_lock, flags);
1290         while (que->cq_cons_idx != prod_idx) {
1291                 cqe = &que->cq[que->cq_cons_idx];
1292
1293                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_IO,
1294                           "cqe=%p prod_idx=%d cons_idx=%d.\n",
1295                           cqe, prod_idx, que->cq_cons_idx);
1296
1297                 ret = qedi_queue_cqe(qedi, cqe, fp->sb_id, p);
1298                 if (ret)
1299                         QEDI_WARN(&qedi->dbg_ctx,
1300                                   "Dropping CQE 0x%x for cid=0x%x.\n",
1301                                   que->cq_cons_idx, cqe->cqe_common.conn_id);
1302
1303                 que->cq_cons_idx++;
1304                 if (que->cq_cons_idx == QEDI_CQ_SIZE)
1305                         que->cq_cons_idx = 0;
1306         }
1307         wake_up_process(p->iothread);
1308         spin_unlock_irqrestore(&p->p_work_lock, flags);
1309
1310         return true;
1311 }
1312
1313 static bool qedi_fp_has_work(struct qedi_fastpath *fp)
1314 {
1315         struct qedi_ctx *qedi = fp->qedi;
1316         struct global_queue *que;
1317         struct qed_sb_info *sb_info = fp->sb_info;
1318         struct status_block_e4 *sb = sb_info->sb_virt;
1319         u16 prod_idx;
1320
1321         barrier();
1322
1323         /* Get the current firmware producer index */
1324         prod_idx = sb->pi_array[QEDI_PROTO_CQ_PROD_IDX];
1325
1326         /* Get the pointer to the global CQ this completion is on */
1327         que = qedi->global_queues[fp->sb_id];
1328
1329         /* prod idx wrap around uint16 */
1330         if (prod_idx >= QEDI_CQ_SIZE)
1331                 prod_idx = prod_idx % QEDI_CQ_SIZE;
1332
1333         return (que->cq_cons_idx != prod_idx);
1334 }
1335
1336 /* MSI-X fastpath handler code */
1337 static irqreturn_t qedi_msix_handler(int irq, void *dev_id)
1338 {
1339         struct qedi_fastpath *fp = dev_id;
1340         struct qedi_ctx *qedi = fp->qedi;
1341         bool wake_io_thread = true;
1342
1343         qed_sb_ack(fp->sb_info, IGU_INT_DISABLE, 0);
1344
1345 process_again:
1346         wake_io_thread = qedi_process_completions(fp);
1347         if (wake_io_thread) {
1348                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
1349                           "process already running\n");
1350         }
1351
1352         if (!qedi_fp_has_work(fp))
1353                 qed_sb_update_sb_idx(fp->sb_info);
1354
1355         /* Check for more work */
1356         rmb();
1357
1358         if (!qedi_fp_has_work(fp))
1359                 qed_sb_ack(fp->sb_info, IGU_INT_ENABLE, 1);
1360         else
1361                 goto process_again;
1362
1363         return IRQ_HANDLED;
1364 }
1365
1366 /* simd handler for MSI/INTa */
1367 static void qedi_simd_int_handler(void *cookie)
1368 {
1369         /* Cookie is qedi_ctx struct */
1370         struct qedi_ctx *qedi = (struct qedi_ctx *)cookie;
1371
1372         QEDI_WARN(&qedi->dbg_ctx, "qedi=%p.\n", qedi);
1373 }
1374
1375 #define QEDI_SIMD_HANDLER_NUM           0
1376 static void qedi_sync_free_irqs(struct qedi_ctx *qedi)
1377 {
1378         int i;
1379         u16 idx;
1380
1381         if (qedi->int_info.msix_cnt) {
1382                 for (i = 0; i < qedi->int_info.used_cnt; i++) {
1383                         idx = i * qedi->dev_info.common.num_hwfns +
1384                         qedi_ops->common->get_affin_hwfn_idx(qedi->cdev);
1385
1386                         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1387                                   "Freeing IRQ #%d vector_idx=%d.\n", i, idx);
1388
1389                         synchronize_irq(qedi->int_info.msix[idx].vector);
1390                         irq_set_affinity_hint(qedi->int_info.msix[idx].vector,
1391                                               NULL);
1392                         free_irq(qedi->int_info.msix[idx].vector,
1393                                  &qedi->fp_array[i]);
1394                 }
1395         } else {
1396                 qedi_ops->common->simd_handler_clean(qedi->cdev,
1397                                                      QEDI_SIMD_HANDLER_NUM);
1398         }
1399
1400         qedi->int_info.used_cnt = 0;
1401         qedi_ops->common->set_fp_int(qedi->cdev, 0);
1402 }
1403
1404 static int qedi_request_msix_irq(struct qedi_ctx *qedi)
1405 {
1406         int i, rc, cpu;
1407         u16 idx;
1408
1409         cpu = cpumask_first(cpu_online_mask);
1410         for (i = 0; i < qedi->msix_count; i++) {
1411                 idx = i * qedi->dev_info.common.num_hwfns +
1412                           qedi_ops->common->get_affin_hwfn_idx(qedi->cdev);
1413
1414                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1415                           "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n",
1416                           qedi->dev_info.common.num_hwfns,
1417                           qedi_ops->common->get_affin_hwfn_idx(qedi->cdev));
1418
1419                 rc = request_irq(qedi->int_info.msix[idx].vector,
1420                                  qedi_msix_handler, 0, "qedi",
1421                                  &qedi->fp_array[i]);
1422                 if (rc) {
1423                         QEDI_WARN(&qedi->dbg_ctx, "request_irq failed.\n");
1424                         qedi_sync_free_irqs(qedi);
1425                         return rc;
1426                 }
1427                 qedi->int_info.used_cnt++;
1428                 rc = irq_set_affinity_hint(qedi->int_info.msix[idx].vector,
1429                                            get_cpu_mask(cpu));
1430                 cpu = cpumask_next(cpu, cpu_online_mask);
1431         }
1432
1433         return 0;
1434 }
1435
1436 static int qedi_setup_int(struct qedi_ctx *qedi)
1437 {
1438         int rc = 0;
1439
1440         rc = qedi_ops->common->set_fp_int(qedi->cdev, qedi->num_queues);
1441         if (rc < 0)
1442                 goto exit_setup_int;
1443
1444         qedi->msix_count = rc;
1445
1446         rc = qedi_ops->common->get_fp_int(qedi->cdev, &qedi->int_info);
1447         if (rc)
1448                 goto exit_setup_int;
1449
1450         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
1451                   "Number of msix_cnt = 0x%x num of cpus = 0x%x\n",
1452                    qedi->int_info.msix_cnt, num_online_cpus());
1453
1454         if (qedi->int_info.msix_cnt) {
1455                 rc = qedi_request_msix_irq(qedi);
1456                 goto exit_setup_int;
1457         } else {
1458                 qedi_ops->common->simd_handler_config(qedi->cdev, &qedi,
1459                                                       QEDI_SIMD_HANDLER_NUM,
1460                                                       qedi_simd_int_handler);
1461                 qedi->int_info.used_cnt = 1;
1462         }
1463
1464 exit_setup_int:
1465         return rc;
1466 }
1467
1468 static void qedi_free_nvm_iscsi_cfg(struct qedi_ctx *qedi)
1469 {
1470         if (qedi->iscsi_image)
1471                 dma_free_coherent(&qedi->pdev->dev,
1472                                   sizeof(struct qedi_nvm_iscsi_image),
1473                                   qedi->iscsi_image, qedi->nvm_buf_dma);
1474 }
1475
1476 static int qedi_alloc_nvm_iscsi_cfg(struct qedi_ctx *qedi)
1477 {
1478         qedi->iscsi_image = dma_alloc_coherent(&qedi->pdev->dev,
1479                                                sizeof(struct qedi_nvm_iscsi_image),
1480                                                &qedi->nvm_buf_dma, GFP_KERNEL);
1481         if (!qedi->iscsi_image) {
1482                 QEDI_ERR(&qedi->dbg_ctx, "Could not allocate NVM BUF.\n");
1483                 return -ENOMEM;
1484         }
1485         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
1486                   "NVM BUF addr=0x%p dma=0x%llx.\n", qedi->iscsi_image,
1487                   qedi->nvm_buf_dma);
1488
1489         return 0;
1490 }
1491
1492 static void qedi_free_bdq(struct qedi_ctx *qedi)
1493 {
1494         int i;
1495
1496         if (qedi->bdq_pbl_list)
1497                 dma_free_coherent(&qedi->pdev->dev, QEDI_PAGE_SIZE,
1498                                   qedi->bdq_pbl_list, qedi->bdq_pbl_list_dma);
1499
1500         if (qedi->bdq_pbl)
1501                 dma_free_coherent(&qedi->pdev->dev, qedi->bdq_pbl_mem_size,
1502                                   qedi->bdq_pbl, qedi->bdq_pbl_dma);
1503
1504         for (i = 0; i < QEDI_BDQ_NUM; i++) {
1505                 if (qedi->bdq[i].buf_addr) {
1506                         dma_free_coherent(&qedi->pdev->dev, QEDI_BDQ_BUF_SIZE,
1507                                           qedi->bdq[i].buf_addr,
1508                                           qedi->bdq[i].buf_dma);
1509                 }
1510         }
1511 }
1512
1513 static void qedi_free_global_queues(struct qedi_ctx *qedi)
1514 {
1515         int i;
1516         struct global_queue **gl = qedi->global_queues;
1517
1518         for (i = 0; i < qedi->num_queues; i++) {
1519                 if (!gl[i])
1520                         continue;
1521
1522                 if (gl[i]->cq)
1523                         dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_mem_size,
1524                                           gl[i]->cq, gl[i]->cq_dma);
1525                 if (gl[i]->cq_pbl)
1526                         dma_free_coherent(&qedi->pdev->dev, gl[i]->cq_pbl_size,
1527                                           gl[i]->cq_pbl, gl[i]->cq_pbl_dma);
1528
1529                 kfree(gl[i]);
1530         }
1531         qedi_free_bdq(qedi);
1532         qedi_free_nvm_iscsi_cfg(qedi);
1533 }
1534
1535 static int qedi_alloc_bdq(struct qedi_ctx *qedi)
1536 {
1537         int i;
1538         struct scsi_bd *pbl;
1539         u64 *list;
1540         dma_addr_t page;
1541
1542         /* Alloc dma memory for BDQ buffers */
1543         for (i = 0; i < QEDI_BDQ_NUM; i++) {
1544                 qedi->bdq[i].buf_addr =
1545                                 dma_alloc_coherent(&qedi->pdev->dev,
1546                                                    QEDI_BDQ_BUF_SIZE,
1547                                                    &qedi->bdq[i].buf_dma,
1548                                                    GFP_KERNEL);
1549                 if (!qedi->bdq[i].buf_addr) {
1550                         QEDI_ERR(&qedi->dbg_ctx,
1551                                  "Could not allocate BDQ buffer %d.\n", i);
1552                         return -ENOMEM;
1553                 }
1554         }
1555
1556         /* Alloc dma memory for BDQ page buffer list */
1557         qedi->bdq_pbl_mem_size = QEDI_BDQ_NUM * sizeof(struct scsi_bd);
1558         qedi->bdq_pbl_mem_size = ALIGN(qedi->bdq_pbl_mem_size, QEDI_PAGE_SIZE);
1559         qedi->rq_num_entries = qedi->bdq_pbl_mem_size / sizeof(struct scsi_bd);
1560
1561         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, "rq_num_entries = %d.\n",
1562                   qedi->rq_num_entries);
1563
1564         qedi->bdq_pbl = dma_alloc_coherent(&qedi->pdev->dev,
1565                                            qedi->bdq_pbl_mem_size,
1566                                            &qedi->bdq_pbl_dma, GFP_KERNEL);
1567         if (!qedi->bdq_pbl) {
1568                 QEDI_ERR(&qedi->dbg_ctx, "Could not allocate BDQ PBL.\n");
1569                 return -ENOMEM;
1570         }
1571
1572         /*
1573          * Populate BDQ PBL with physical and virtual address of individual
1574          * BDQ buffers
1575          */
1576         pbl = (struct scsi_bd  *)qedi->bdq_pbl;
1577         for (i = 0; i < QEDI_BDQ_NUM; i++) {
1578                 pbl->address.hi =
1579                                 cpu_to_le32(QEDI_U64_HI(qedi->bdq[i].buf_dma));
1580                 pbl->address.lo =
1581                                 cpu_to_le32(QEDI_U64_LO(qedi->bdq[i].buf_dma));
1582                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1583                           "pbl [0x%p] pbl->address hi [0x%llx] lo [0x%llx], idx [%d]\n",
1584                           pbl, pbl->address.hi, pbl->address.lo, i);
1585                 pbl->opaque.iscsi_opaque.reserved_zero[0] = 0;
1586                 pbl->opaque.iscsi_opaque.reserved_zero[1] = 0;
1587                 pbl->opaque.iscsi_opaque.reserved_zero[2] = 0;
1588                 pbl->opaque.iscsi_opaque.opaque = cpu_to_le16(i);
1589                 pbl++;
1590         }
1591
1592         /* Allocate list of PBL pages */
1593         qedi->bdq_pbl_list = dma_alloc_coherent(&qedi->pdev->dev,
1594                                                 QEDI_PAGE_SIZE,
1595                                                 &qedi->bdq_pbl_list_dma,
1596                                                 GFP_KERNEL);
1597         if (!qedi->bdq_pbl_list) {
1598                 QEDI_ERR(&qedi->dbg_ctx,
1599                          "Could not allocate list of PBL pages.\n");
1600                 return -ENOMEM;
1601         }
1602
1603         /*
1604          * Now populate PBL list with pages that contain pointers to the
1605          * individual buffers.
1606          */
1607         qedi->bdq_pbl_list_num_entries = qedi->bdq_pbl_mem_size /
1608                                          QEDI_PAGE_SIZE;
1609         list = (u64 *)qedi->bdq_pbl_list;
1610         page = qedi->bdq_pbl_list_dma;
1611         for (i = 0; i < qedi->bdq_pbl_list_num_entries; i++) {
1612                 *list = qedi->bdq_pbl_dma;
1613                 list++;
1614                 page += QEDI_PAGE_SIZE;
1615         }
1616
1617         return 0;
1618 }
1619
1620 static int qedi_alloc_global_queues(struct qedi_ctx *qedi)
1621 {
1622         u32 *list;
1623         int i;
1624         int status;
1625         u32 *pbl;
1626         dma_addr_t page;
1627         int num_pages;
1628
1629         /*
1630          * Number of global queues (CQ / RQ). This should
1631          * be <= number of available MSIX vectors for the PF
1632          */
1633         if (!qedi->num_queues) {
1634                 QEDI_ERR(&qedi->dbg_ctx, "No MSI-X vectors available!\n");
1635                 return -ENOMEM;
1636         }
1637
1638         /* Make sure we allocated the PBL that will contain the physical
1639          * addresses of our queues
1640          */
1641         if (!qedi->p_cpuq) {
1642                 status = -EINVAL;
1643                 goto mem_alloc_failure;
1644         }
1645
1646         qedi->global_queues = kzalloc((sizeof(struct global_queue *) *
1647                                        qedi->num_queues), GFP_KERNEL);
1648         if (!qedi->global_queues) {
1649                 QEDI_ERR(&qedi->dbg_ctx,
1650                          "Unable to allocate global queues array ptr memory\n");
1651                 return -ENOMEM;
1652         }
1653         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
1654                   "qedi->global_queues=%p.\n", qedi->global_queues);
1655
1656         /* Allocate DMA coherent buffers for BDQ */
1657         status = qedi_alloc_bdq(qedi);
1658         if (status)
1659                 goto mem_alloc_failure;
1660
1661         /* Allocate DMA coherent buffers for NVM_ISCSI_CFG */
1662         status = qedi_alloc_nvm_iscsi_cfg(qedi);
1663         if (status)
1664                 goto mem_alloc_failure;
1665
1666         /* Allocate a CQ and an associated PBL for each MSI-X
1667          * vector.
1668          */
1669         for (i = 0; i < qedi->num_queues; i++) {
1670                 qedi->global_queues[i] =
1671                                         kzalloc(sizeof(*qedi->global_queues[0]),
1672                                                 GFP_KERNEL);
1673                 if (!qedi->global_queues[i]) {
1674                         QEDI_ERR(&qedi->dbg_ctx,
1675                                  "Unable to allocation global queue %d.\n", i);
1676                         status = -ENOMEM;
1677                         goto mem_alloc_failure;
1678                 }
1679
1680                 qedi->global_queues[i]->cq_mem_size =
1681                     (QEDI_CQ_SIZE + 8) * sizeof(union iscsi_cqe);
1682                 qedi->global_queues[i]->cq_mem_size =
1683                     (qedi->global_queues[i]->cq_mem_size +
1684                     (QEDI_PAGE_SIZE - 1));
1685
1686                 qedi->global_queues[i]->cq_pbl_size =
1687                     (qedi->global_queues[i]->cq_mem_size /
1688                     QEDI_PAGE_SIZE) * sizeof(void *);
1689                 qedi->global_queues[i]->cq_pbl_size =
1690                     (qedi->global_queues[i]->cq_pbl_size +
1691                     (QEDI_PAGE_SIZE - 1));
1692
1693                 qedi->global_queues[i]->cq = dma_alloc_coherent(&qedi->pdev->dev,
1694                                                                 qedi->global_queues[i]->cq_mem_size,
1695                                                                 &qedi->global_queues[i]->cq_dma,
1696                                                                 GFP_KERNEL);
1697
1698                 if (!qedi->global_queues[i]->cq) {
1699                         QEDI_WARN(&qedi->dbg_ctx,
1700                                   "Could not allocate cq.\n");
1701                         status = -ENOMEM;
1702                         goto mem_alloc_failure;
1703                 }
1704                 qedi->global_queues[i]->cq_pbl = dma_alloc_coherent(&qedi->pdev->dev,
1705                                                                     qedi->global_queues[i]->cq_pbl_size,
1706                                                                     &qedi->global_queues[i]->cq_pbl_dma,
1707                                                                     GFP_KERNEL);
1708
1709                 if (!qedi->global_queues[i]->cq_pbl) {
1710                         QEDI_WARN(&qedi->dbg_ctx,
1711                                   "Could not allocate cq PBL.\n");
1712                         status = -ENOMEM;
1713                         goto mem_alloc_failure;
1714                 }
1715
1716                 /* Create PBL */
1717                 num_pages = qedi->global_queues[i]->cq_mem_size /
1718                     QEDI_PAGE_SIZE;
1719                 page = qedi->global_queues[i]->cq_dma;
1720                 pbl = (u32 *)qedi->global_queues[i]->cq_pbl;
1721
1722                 while (num_pages--) {
1723                         *pbl = (u32)page;
1724                         pbl++;
1725                         *pbl = (u32)((u64)page >> 32);
1726                         pbl++;
1727                         page += QEDI_PAGE_SIZE;
1728                 }
1729         }
1730
1731         list = (u32 *)qedi->p_cpuq;
1732
1733         /*
1734          * The list is built as follows: CQ#0 PBL pointer, RQ#0 PBL pointer,
1735          * CQ#1 PBL pointer, RQ#1 PBL pointer, etc.  Each PBL pointer points
1736          * to the physical address which contains an array of pointers to the
1737          * physical addresses of the specific queue pages.
1738          */
1739         for (i = 0; i < qedi->num_queues; i++) {
1740                 *list = (u32)qedi->global_queues[i]->cq_pbl_dma;
1741                 list++;
1742                 *list = (u32)((u64)qedi->global_queues[i]->cq_pbl_dma >> 32);
1743                 list++;
1744
1745                 *list = (u32)0;
1746                 list++;
1747                 *list = (u32)((u64)0 >> 32);
1748                 list++;
1749         }
1750
1751         return 0;
1752
1753 mem_alloc_failure:
1754         qedi_free_global_queues(qedi);
1755         return status;
1756 }
1757
1758 int qedi_alloc_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep)
1759 {
1760         int rval = 0;
1761         u32 *pbl;
1762         dma_addr_t page;
1763         int num_pages;
1764
1765         if (!ep)
1766                 return -EIO;
1767
1768         /* Calculate appropriate queue and PBL sizes */
1769         ep->sq_mem_size = QEDI_SQ_SIZE * sizeof(struct iscsi_wqe);
1770         ep->sq_mem_size += QEDI_PAGE_SIZE - 1;
1771
1772         ep->sq_pbl_size = (ep->sq_mem_size / QEDI_PAGE_SIZE) * sizeof(void *);
1773         ep->sq_pbl_size = ep->sq_pbl_size + QEDI_PAGE_SIZE;
1774
1775         ep->sq = dma_alloc_coherent(&qedi->pdev->dev, ep->sq_mem_size,
1776                                     &ep->sq_dma, GFP_KERNEL);
1777         if (!ep->sq) {
1778                 QEDI_WARN(&qedi->dbg_ctx,
1779                           "Could not allocate send queue.\n");
1780                 rval = -ENOMEM;
1781                 goto out;
1782         }
1783         ep->sq_pbl = dma_alloc_coherent(&qedi->pdev->dev, ep->sq_pbl_size,
1784                                         &ep->sq_pbl_dma, GFP_KERNEL);
1785         if (!ep->sq_pbl) {
1786                 QEDI_WARN(&qedi->dbg_ctx,
1787                           "Could not allocate send queue PBL.\n");
1788                 rval = -ENOMEM;
1789                 goto out_free_sq;
1790         }
1791
1792         /* Create PBL */
1793         num_pages = ep->sq_mem_size / QEDI_PAGE_SIZE;
1794         page = ep->sq_dma;
1795         pbl = (u32 *)ep->sq_pbl;
1796
1797         while (num_pages--) {
1798                 *pbl = (u32)page;
1799                 pbl++;
1800                 *pbl = (u32)((u64)page >> 32);
1801                 pbl++;
1802                 page += QEDI_PAGE_SIZE;
1803         }
1804
1805         return rval;
1806
1807 out_free_sq:
1808         dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq,
1809                           ep->sq_dma);
1810 out:
1811         return rval;
1812 }
1813
1814 void qedi_free_sq(struct qedi_ctx *qedi, struct qedi_endpoint *ep)
1815 {
1816         if (ep->sq_pbl)
1817                 dma_free_coherent(&qedi->pdev->dev, ep->sq_pbl_size, ep->sq_pbl,
1818                                   ep->sq_pbl_dma);
1819         if (ep->sq)
1820                 dma_free_coherent(&qedi->pdev->dev, ep->sq_mem_size, ep->sq,
1821                                   ep->sq_dma);
1822 }
1823
1824 int qedi_get_task_idx(struct qedi_ctx *qedi)
1825 {
1826         s16 tmp_idx;
1827
1828 again:
1829         tmp_idx = find_first_zero_bit(qedi->task_idx_map,
1830                                       MAX_ISCSI_TASK_ENTRIES);
1831
1832         if (tmp_idx >= MAX_ISCSI_TASK_ENTRIES) {
1833                 QEDI_ERR(&qedi->dbg_ctx, "FW task context pool is full.\n");
1834                 tmp_idx = -1;
1835                 goto err_idx;
1836         }
1837
1838         if (test_and_set_bit(tmp_idx, qedi->task_idx_map))
1839                 goto again;
1840
1841 err_idx:
1842         return tmp_idx;
1843 }
1844
1845 void qedi_clear_task_idx(struct qedi_ctx *qedi, int idx)
1846 {
1847         if (!test_and_clear_bit(idx, qedi->task_idx_map))
1848                 QEDI_ERR(&qedi->dbg_ctx,
1849                          "FW task context, already cleared, tid=0x%x\n", idx);
1850 }
1851
1852 void qedi_update_itt_map(struct qedi_ctx *qedi, u32 tid, u32 proto_itt,
1853                          struct qedi_cmd *cmd)
1854 {
1855         qedi->itt_map[tid].itt = proto_itt;
1856         qedi->itt_map[tid].p_cmd = cmd;
1857
1858         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1859                   "update itt map tid=0x%x, with proto itt=0x%x\n", tid,
1860                   qedi->itt_map[tid].itt);
1861 }
1862
1863 void qedi_get_task_tid(struct qedi_ctx *qedi, u32 itt, s16 *tid)
1864 {
1865         u16 i;
1866
1867         for (i = 0; i < MAX_ISCSI_TASK_ENTRIES; i++) {
1868                 if (qedi->itt_map[i].itt == itt) {
1869                         *tid = i;
1870                         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1871                                   "Ref itt=0x%x, found at tid=0x%x\n",
1872                                   itt, *tid);
1873                         return;
1874                 }
1875         }
1876
1877         WARN_ON(1);
1878 }
1879
1880 void qedi_get_proto_itt(struct qedi_ctx *qedi, u32 tid, u32 *proto_itt)
1881 {
1882         *proto_itt = qedi->itt_map[tid].itt;
1883         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
1884                   "Get itt map tid [0x%x with proto itt[0x%x]",
1885                   tid, *proto_itt);
1886 }
1887
1888 struct qedi_cmd *qedi_get_cmd_from_tid(struct qedi_ctx *qedi, u32 tid)
1889 {
1890         struct qedi_cmd *cmd = NULL;
1891
1892         if (tid >= MAX_ISCSI_TASK_ENTRIES)
1893                 return NULL;
1894
1895         cmd = qedi->itt_map[tid].p_cmd;
1896         if (cmd->task_id != tid)
1897                 return NULL;
1898
1899         qedi->itt_map[tid].p_cmd = NULL;
1900
1901         return cmd;
1902 }
1903
1904 static int qedi_alloc_itt(struct qedi_ctx *qedi)
1905 {
1906         qedi->itt_map = kcalloc(MAX_ISCSI_TASK_ENTRIES,
1907                                 sizeof(struct qedi_itt_map), GFP_KERNEL);
1908         if (!qedi->itt_map) {
1909                 QEDI_ERR(&qedi->dbg_ctx,
1910                          "Unable to allocate itt map array memory\n");
1911                 return -ENOMEM;
1912         }
1913         return 0;
1914 }
1915
1916 static void qedi_free_itt(struct qedi_ctx *qedi)
1917 {
1918         kfree(qedi->itt_map);
1919 }
1920
1921 static struct qed_ll2_cb_ops qedi_ll2_cb_ops = {
1922         .rx_cb = qedi_ll2_rx,
1923         .tx_cb = NULL,
1924 };
1925
1926 static int qedi_percpu_io_thread(void *arg)
1927 {
1928         struct qedi_percpu_s *p = arg;
1929         struct qedi_work *work, *tmp;
1930         unsigned long flags;
1931         LIST_HEAD(work_list);
1932
1933         set_user_nice(current, -20);
1934
1935         while (!kthread_should_stop()) {
1936                 spin_lock_irqsave(&p->p_work_lock, flags);
1937                 while (!list_empty(&p->work_list)) {
1938                         list_splice_init(&p->work_list, &work_list);
1939                         spin_unlock_irqrestore(&p->p_work_lock, flags);
1940
1941                         list_for_each_entry_safe(work, tmp, &work_list, list) {
1942                                 list_del_init(&work->list);
1943                                 qedi_fp_process_cqes(work);
1944                                 if (!work->is_solicited)
1945                                         kfree(work);
1946                         }
1947                         cond_resched();
1948                         spin_lock_irqsave(&p->p_work_lock, flags);
1949                 }
1950                 set_current_state(TASK_INTERRUPTIBLE);
1951                 spin_unlock_irqrestore(&p->p_work_lock, flags);
1952                 schedule();
1953         }
1954         __set_current_state(TASK_RUNNING);
1955
1956         return 0;
1957 }
1958
1959 static int qedi_cpu_online(unsigned int cpu)
1960 {
1961         struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu);
1962         struct task_struct *thread;
1963
1964         thread = kthread_create_on_node(qedi_percpu_io_thread, (void *)p,
1965                                         cpu_to_node(cpu),
1966                                         "qedi_thread/%d", cpu);
1967         if (IS_ERR(thread))
1968                 return PTR_ERR(thread);
1969
1970         kthread_bind(thread, cpu);
1971         p->iothread = thread;
1972         wake_up_process(thread);
1973         return 0;
1974 }
1975
1976 static int qedi_cpu_offline(unsigned int cpu)
1977 {
1978         struct qedi_percpu_s *p = this_cpu_ptr(&qedi_percpu);
1979         struct qedi_work *work, *tmp;
1980         struct task_struct *thread;
1981
1982         spin_lock_bh(&p->p_work_lock);
1983         thread = p->iothread;
1984         p->iothread = NULL;
1985
1986         list_for_each_entry_safe(work, tmp, &p->work_list, list) {
1987                 list_del_init(&work->list);
1988                 qedi_fp_process_cqes(work);
1989                 if (!work->is_solicited)
1990                         kfree(work);
1991         }
1992
1993         spin_unlock_bh(&p->p_work_lock);
1994         if (thread)
1995                 kthread_stop(thread);
1996         return 0;
1997 }
1998
1999 void qedi_reset_host_mtu(struct qedi_ctx *qedi, u16 mtu)
2000 {
2001         struct qed_ll2_params params;
2002
2003         qedi_recover_all_conns(qedi);
2004
2005         qedi_ops->ll2->stop(qedi->cdev);
2006         qedi_ll2_free_skbs(qedi);
2007
2008         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "old MTU %u, new MTU %u\n",
2009                   qedi->ll2_mtu, mtu);
2010         memset(&params, 0, sizeof(params));
2011         qedi->ll2_mtu = mtu;
2012         params.mtu = qedi->ll2_mtu + IPV6_HDR_LEN + TCP_HDR_LEN;
2013         params.drop_ttl0_packets = 0;
2014         params.rx_vlan_stripping = 1;
2015         ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac);
2016         qedi_ops->ll2->start(qedi->cdev, &params);
2017 }
2018
2019 /*
2020  * qedi_get_nvram_block: - Scan through the iSCSI NVRAM block (while accounting
2021  * for gaps) for the matching absolute-pf-id of the QEDI device.
2022  */
2023 static struct nvm_iscsi_block *
2024 qedi_get_nvram_block(struct qedi_ctx *qedi)
2025 {
2026         int i;
2027         u8 pf;
2028         u32 flags;
2029         struct nvm_iscsi_block *block;
2030
2031         pf = qedi->dev_info.common.abs_pf_id;
2032         block = &qedi->iscsi_image->iscsi_cfg.block[0];
2033         for (i = 0; i < NUM_OF_ISCSI_PF_SUPPORTED; i++, block++) {
2034                 flags = ((block->id) & NVM_ISCSI_CFG_BLK_CTRL_FLAG_MASK) >>
2035                         NVM_ISCSI_CFG_BLK_CTRL_FLAG_OFFSET;
2036                 if (flags & (NVM_ISCSI_CFG_BLK_CTRL_FLAG_IS_NOT_EMPTY |
2037                                 NVM_ISCSI_CFG_BLK_CTRL_FLAG_PF_MAPPED) &&
2038                         (pf == (block->id & NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_MASK)
2039                                 >> NVM_ISCSI_CFG_BLK_MAPPED_PF_ID_OFFSET))
2040                         return block;
2041         }
2042         return NULL;
2043 }
2044
2045 static ssize_t qedi_show_boot_eth_info(void *data, int type, char *buf)
2046 {
2047         struct qedi_ctx *qedi = data;
2048         struct nvm_iscsi_initiator *initiator;
2049         int rc = 1;
2050         u32 ipv6_en, dhcp_en, ip_len;
2051         struct nvm_iscsi_block *block;
2052         char *fmt, *ip, *sub, *gw;
2053
2054         block = qedi_get_nvram_block(qedi);
2055         if (!block)
2056                 return 0;
2057
2058         initiator = &block->initiator;
2059         ipv6_en = block->generic.ctrl_flags &
2060                   NVM_ISCSI_CFG_GEN_IPV6_ENABLED;
2061         dhcp_en = block->generic.ctrl_flags &
2062                   NVM_ISCSI_CFG_GEN_DHCP_TCPIP_CONFIG_ENABLED;
2063         /* Static IP assignments. */
2064         fmt = ipv6_en ? "%pI6\n" : "%pI4\n";
2065         ip = ipv6_en ? initiator->ipv6.addr.byte : initiator->ipv4.addr.byte;
2066         ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN;
2067         sub = ipv6_en ? initiator->ipv6.subnet_mask.byte :
2068               initiator->ipv4.subnet_mask.byte;
2069         gw = ipv6_en ? initiator->ipv6.gateway.byte :
2070              initiator->ipv4.gateway.byte;
2071         /* DHCP IP adjustments. */
2072         fmt = dhcp_en ? "%s\n" : fmt;
2073         if (dhcp_en) {
2074                 ip = ipv6_en ? "0::0" : "0.0.0.0";
2075                 sub = ip;
2076                 gw = ip;
2077                 ip_len = ipv6_en ? 5 : 8;
2078         }
2079
2080         switch (type) {
2081         case ISCSI_BOOT_ETH_IP_ADDR:
2082                 rc = snprintf(buf, ip_len, fmt, ip);
2083                 break;
2084         case ISCSI_BOOT_ETH_SUBNET_MASK:
2085                 rc = snprintf(buf, ip_len, fmt, sub);
2086                 break;
2087         case ISCSI_BOOT_ETH_GATEWAY:
2088                 rc = snprintf(buf, ip_len, fmt, gw);
2089                 break;
2090         case ISCSI_BOOT_ETH_FLAGS:
2091                 rc = snprintf(buf, 3, "%hhd\n",
2092                               SYSFS_FLAG_FW_SEL_BOOT);
2093                 break;
2094         case ISCSI_BOOT_ETH_INDEX:
2095                 rc = snprintf(buf, 3, "0\n");
2096                 break;
2097         case ISCSI_BOOT_ETH_MAC:
2098                 rc = sysfs_format_mac(buf, qedi->mac, ETH_ALEN);
2099                 break;
2100         case ISCSI_BOOT_ETH_VLAN:
2101                 rc = snprintf(buf, 12, "%d\n",
2102                               GET_FIELD2(initiator->generic_cont0,
2103                                          NVM_ISCSI_CFG_INITIATOR_VLAN));
2104                 break;
2105         case ISCSI_BOOT_ETH_ORIGIN:
2106                 if (dhcp_en)
2107                         rc = snprintf(buf, 3, "3\n");
2108                 break;
2109         default:
2110                 rc = 0;
2111                 break;
2112         }
2113
2114         return rc;
2115 }
2116
2117 static umode_t qedi_eth_get_attr_visibility(void *data, int type)
2118 {
2119         int rc = 1;
2120
2121         switch (type) {
2122         case ISCSI_BOOT_ETH_FLAGS:
2123         case ISCSI_BOOT_ETH_MAC:
2124         case ISCSI_BOOT_ETH_INDEX:
2125         case ISCSI_BOOT_ETH_IP_ADDR:
2126         case ISCSI_BOOT_ETH_SUBNET_MASK:
2127         case ISCSI_BOOT_ETH_GATEWAY:
2128         case ISCSI_BOOT_ETH_ORIGIN:
2129         case ISCSI_BOOT_ETH_VLAN:
2130                 rc = 0444;
2131                 break;
2132         default:
2133                 rc = 0;
2134                 break;
2135         }
2136         return rc;
2137 }
2138
2139 static ssize_t qedi_show_boot_ini_info(void *data, int type, char *buf)
2140 {
2141         struct qedi_ctx *qedi = data;
2142         struct nvm_iscsi_initiator *initiator;
2143         int rc;
2144         struct nvm_iscsi_block *block;
2145
2146         block = qedi_get_nvram_block(qedi);
2147         if (!block)
2148                 return 0;
2149
2150         initiator = &block->initiator;
2151
2152         switch (type) {
2153         case ISCSI_BOOT_INI_INITIATOR_NAME:
2154                 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN,
2155                              initiator->initiator_name.byte);
2156                 break;
2157         default:
2158                 rc = 0;
2159                 break;
2160         }
2161         return rc;
2162 }
2163
2164 static umode_t qedi_ini_get_attr_visibility(void *data, int type)
2165 {
2166         int rc;
2167
2168         switch (type) {
2169         case ISCSI_BOOT_INI_INITIATOR_NAME:
2170                 rc = 0444;
2171                 break;
2172         default:
2173                 rc = 0;
2174                 break;
2175         }
2176         return rc;
2177 }
2178
2179 static ssize_t
2180 qedi_show_boot_tgt_info(struct qedi_ctx *qedi, int type,
2181                         char *buf, enum qedi_nvm_tgts idx)
2182 {
2183         int rc = 1;
2184         u32 ctrl_flags, ipv6_en, chap_en, mchap_en, ip_len;
2185         struct nvm_iscsi_block *block;
2186         char *chap_name, *chap_secret;
2187         char *mchap_name, *mchap_secret;
2188
2189         block = qedi_get_nvram_block(qedi);
2190         if (!block)
2191                 goto exit_show_tgt_info;
2192
2193         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT,
2194                   "Port:%d, tgt_idx:%d\n",
2195                   GET_FIELD2(block->id, NVM_ISCSI_CFG_BLK_MAPPED_PF_ID), idx);
2196
2197         ctrl_flags = block->target[idx].ctrl_flags &
2198                      NVM_ISCSI_CFG_TARGET_ENABLED;
2199
2200         if (!ctrl_flags) {
2201                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_EVT,
2202                           "Target disabled\n");
2203                 goto exit_show_tgt_info;
2204         }
2205
2206         ipv6_en = block->generic.ctrl_flags &
2207                   NVM_ISCSI_CFG_GEN_IPV6_ENABLED;
2208         ip_len = ipv6_en ? IPV6_LEN : IPV4_LEN;
2209         chap_en = block->generic.ctrl_flags &
2210                   NVM_ISCSI_CFG_GEN_CHAP_ENABLED;
2211         chap_name = chap_en ? block->initiator.chap_name.byte : NULL;
2212         chap_secret = chap_en ? block->initiator.chap_password.byte : NULL;
2213
2214         mchap_en = block->generic.ctrl_flags &
2215                   NVM_ISCSI_CFG_GEN_CHAP_MUTUAL_ENABLED;
2216         mchap_name = mchap_en ? block->target[idx].chap_name.byte : NULL;
2217         mchap_secret = mchap_en ? block->target[idx].chap_password.byte : NULL;
2218
2219         switch (type) {
2220         case ISCSI_BOOT_TGT_NAME:
2221                 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_ISCSI_NAME_MAX_LEN,
2222                              block->target[idx].target_name.byte);
2223                 break;
2224         case ISCSI_BOOT_TGT_IP_ADDR:
2225                 if (ipv6_en)
2226                         rc = snprintf(buf, ip_len, "%pI6\n",
2227                                       block->target[idx].ipv6_addr.byte);
2228                 else
2229                         rc = snprintf(buf, ip_len, "%pI4\n",
2230                                       block->target[idx].ipv4_addr.byte);
2231                 break;
2232         case ISCSI_BOOT_TGT_PORT:
2233                 rc = snprintf(buf, 12, "%d\n",
2234                               GET_FIELD2(block->target[idx].generic_cont0,
2235                                          NVM_ISCSI_CFG_TARGET_TCP_PORT));
2236                 break;
2237         case ISCSI_BOOT_TGT_LUN:
2238                 rc = snprintf(buf, 22, "%.*d\n",
2239                               block->target[idx].lun.value[1],
2240                               block->target[idx].lun.value[0]);
2241                 break;
2242         case ISCSI_BOOT_TGT_CHAP_NAME:
2243                 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN,
2244                              chap_name);
2245                 break;
2246         case ISCSI_BOOT_TGT_CHAP_SECRET:
2247                 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN,
2248                              chap_secret);
2249                 break;
2250         case ISCSI_BOOT_TGT_REV_CHAP_NAME:
2251                 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_NAME_MAX_LEN,
2252                              mchap_name);
2253                 break;
2254         case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
2255                 rc = sprintf(buf, "%.*s\n", NVM_ISCSI_CFG_CHAP_PWD_MAX_LEN,
2256                              mchap_secret);
2257                 break;
2258         case ISCSI_BOOT_TGT_FLAGS:
2259                 rc = snprintf(buf, 3, "%hhd\n", SYSFS_FLAG_FW_SEL_BOOT);
2260                 break;
2261         case ISCSI_BOOT_TGT_NIC_ASSOC:
2262                 rc = snprintf(buf, 3, "0\n");
2263                 break;
2264         default:
2265                 rc = 0;
2266                 break;
2267         }
2268
2269 exit_show_tgt_info:
2270         return rc;
2271 }
2272
2273 static ssize_t qedi_show_boot_tgt_pri_info(void *data, int type, char *buf)
2274 {
2275         struct qedi_ctx *qedi = data;
2276
2277         return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_PRI);
2278 }
2279
2280 static ssize_t qedi_show_boot_tgt_sec_info(void *data, int type, char *buf)
2281 {
2282         struct qedi_ctx *qedi = data;
2283
2284         return qedi_show_boot_tgt_info(qedi, type, buf, QEDI_NVM_TGT_SEC);
2285 }
2286
2287 static umode_t qedi_tgt_get_attr_visibility(void *data, int type)
2288 {
2289         int rc;
2290
2291         switch (type) {
2292         case ISCSI_BOOT_TGT_NAME:
2293         case ISCSI_BOOT_TGT_IP_ADDR:
2294         case ISCSI_BOOT_TGT_PORT:
2295         case ISCSI_BOOT_TGT_LUN:
2296         case ISCSI_BOOT_TGT_CHAP_NAME:
2297         case ISCSI_BOOT_TGT_CHAP_SECRET:
2298         case ISCSI_BOOT_TGT_REV_CHAP_NAME:
2299         case ISCSI_BOOT_TGT_REV_CHAP_SECRET:
2300         case ISCSI_BOOT_TGT_NIC_ASSOC:
2301         case ISCSI_BOOT_TGT_FLAGS:
2302                 rc = 0444;
2303                 break;
2304         default:
2305                 rc = 0;
2306                 break;
2307         }
2308         return rc;
2309 }
2310
2311 static void qedi_boot_release(void *data)
2312 {
2313         struct qedi_ctx *qedi = data;
2314
2315         scsi_host_put(qedi->shost);
2316 }
2317
2318 static int qedi_get_boot_info(struct qedi_ctx *qedi)
2319 {
2320         int ret = 1;
2321
2322         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2323                   "Get NVM iSCSI CFG image\n");
2324         ret = qedi_ops->common->nvm_get_image(qedi->cdev,
2325                                               QED_NVM_IMAGE_ISCSI_CFG,
2326                                               (char *)qedi->iscsi_image,
2327                                               sizeof(struct qedi_nvm_iscsi_image));
2328         if (ret)
2329                 QEDI_ERR(&qedi->dbg_ctx,
2330                          "Could not get NVM image. ret = %d\n", ret);
2331
2332         return ret;
2333 }
2334
2335 static int qedi_setup_boot_info(struct qedi_ctx *qedi)
2336 {
2337         struct iscsi_boot_kobj *boot_kobj;
2338
2339         if (qedi_get_boot_info(qedi))
2340                 return -EPERM;
2341
2342         qedi->boot_kset = iscsi_boot_create_host_kset(qedi->shost->host_no);
2343         if (!qedi->boot_kset)
2344                 goto kset_free;
2345
2346         if (!scsi_host_get(qedi->shost))
2347                 goto kset_free;
2348
2349         boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 0, qedi,
2350                                              qedi_show_boot_tgt_pri_info,
2351                                              qedi_tgt_get_attr_visibility,
2352                                              qedi_boot_release);
2353         if (!boot_kobj)
2354                 goto put_host;
2355
2356         if (!scsi_host_get(qedi->shost))
2357                 goto kset_free;
2358
2359         boot_kobj = iscsi_boot_create_target(qedi->boot_kset, 1, qedi,
2360                                              qedi_show_boot_tgt_sec_info,
2361                                              qedi_tgt_get_attr_visibility,
2362                                              qedi_boot_release);
2363         if (!boot_kobj)
2364                 goto put_host;
2365
2366         if (!scsi_host_get(qedi->shost))
2367                 goto kset_free;
2368
2369         boot_kobj = iscsi_boot_create_initiator(qedi->boot_kset, 0, qedi,
2370                                                 qedi_show_boot_ini_info,
2371                                                 qedi_ini_get_attr_visibility,
2372                                                 qedi_boot_release);
2373         if (!boot_kobj)
2374                 goto put_host;
2375
2376         if (!scsi_host_get(qedi->shost))
2377                 goto kset_free;
2378
2379         boot_kobj = iscsi_boot_create_ethernet(qedi->boot_kset, 0, qedi,
2380                                                qedi_show_boot_eth_info,
2381                                                qedi_eth_get_attr_visibility,
2382                                                qedi_boot_release);
2383         if (!boot_kobj)
2384                 goto put_host;
2385
2386         return 0;
2387
2388 put_host:
2389         scsi_host_put(qedi->shost);
2390 kset_free:
2391         iscsi_boot_destroy_kset(qedi->boot_kset);
2392         return -ENOMEM;
2393 }
2394
2395 static pci_ers_result_t qedi_io_error_detected(struct pci_dev *pdev,
2396                                                pci_channel_state_t state)
2397 {
2398         struct qedi_ctx *qedi = pci_get_drvdata(pdev);
2399
2400         QEDI_ERR(&qedi->dbg_ctx, "%s: PCI error detected [%d]\n",
2401                  __func__, state);
2402
2403         if (test_and_set_bit(QEDI_IN_RECOVERY, &qedi->flags)) {
2404                 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2405                           "Recovery already in progress.\n");
2406                 return PCI_ERS_RESULT_NONE;
2407         }
2408
2409         qedi_ops->common->recovery_process(qedi->cdev);
2410
2411         return PCI_ERS_RESULT_CAN_RECOVER;
2412 }
2413
2414 static void __qedi_remove(struct pci_dev *pdev, int mode)
2415 {
2416         struct qedi_ctx *qedi = pci_get_drvdata(pdev);
2417         int rval;
2418         u16 retry = 10;
2419
2420         if (mode == QEDI_MODE_NORMAL || mode == QEDI_MODE_SHUTDOWN) {
2421                 iscsi_host_remove(qedi->shost);
2422
2423                 if (qedi->tmf_thread) {
2424                         flush_workqueue(qedi->tmf_thread);
2425                         destroy_workqueue(qedi->tmf_thread);
2426                         qedi->tmf_thread = NULL;
2427                 }
2428
2429                 if (qedi->offload_thread) {
2430                         flush_workqueue(qedi->offload_thread);
2431                         destroy_workqueue(qedi->offload_thread);
2432                         qedi->offload_thread = NULL;
2433                 }
2434         }
2435
2436 #ifdef CONFIG_DEBUG_FS
2437         qedi_dbg_host_exit(&qedi->dbg_ctx);
2438 #endif
2439         if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags))
2440                 qedi_ops->common->set_power_state(qedi->cdev, PCI_D0);
2441
2442         qedi_sync_free_irqs(qedi);
2443
2444         if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) {
2445                 while (retry--) {
2446                         rval = qedi_ops->stop(qedi->cdev);
2447                         if (rval < 0)
2448                                 msleep(1000);
2449                         else
2450                                 break;
2451                 }
2452                 qedi_ops->ll2->stop(qedi->cdev);
2453         }
2454
2455         qedi_free_iscsi_pf_param(qedi);
2456
2457         rval = qedi_ops->common->update_drv_state(qedi->cdev, false);
2458         if (rval)
2459                 QEDI_ERR(&qedi->dbg_ctx, "Failed to send drv state to MFW\n");
2460
2461         if (!test_bit(QEDI_IN_OFFLINE, &qedi->flags)) {
2462                 qedi_ops->common->slowpath_stop(qedi->cdev);
2463                 qedi_ops->common->remove(qedi->cdev);
2464         }
2465
2466         qedi_destroy_fp(qedi);
2467
2468         if (mode == QEDI_MODE_NORMAL || mode == QEDI_MODE_SHUTDOWN) {
2469                 qedi_release_cid_que(qedi);
2470                 qedi_cm_free_mem(qedi);
2471                 qedi_free_uio(qedi->udev);
2472                 qedi_free_itt(qedi);
2473
2474                 if (qedi->ll2_recv_thread) {
2475                         kthread_stop(qedi->ll2_recv_thread);
2476                         qedi->ll2_recv_thread = NULL;
2477                 }
2478                 qedi_ll2_free_skbs(qedi);
2479
2480                 if (qedi->boot_kset)
2481                         iscsi_boot_destroy_kset(qedi->boot_kset);
2482
2483                 iscsi_host_free(qedi->shost);
2484         }
2485 }
2486
2487 static void qedi_board_disable_work(struct work_struct *work)
2488 {
2489         struct qedi_ctx *qedi =
2490                         container_of(work, struct qedi_ctx,
2491                                      board_disable_work.work);
2492
2493         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2494                   "Fan failure, Unloading firmware context.\n");
2495
2496         if (test_and_set_bit(QEDI_IN_SHUTDOWN, &qedi->flags))
2497                 return;
2498
2499         __qedi_remove(qedi->pdev, QEDI_MODE_SHUTDOWN);
2500 }
2501
2502 static void qedi_shutdown(struct pci_dev *pdev)
2503 {
2504         struct qedi_ctx *qedi = pci_get_drvdata(pdev);
2505
2506         QEDI_ERR(&qedi->dbg_ctx, "%s: Shutdown qedi\n", __func__);
2507         if (test_and_set_bit(QEDI_IN_SHUTDOWN, &qedi->flags))
2508                 return;
2509         __qedi_remove(pdev, QEDI_MODE_SHUTDOWN);
2510 }
2511
2512 static int __qedi_probe(struct pci_dev *pdev, int mode)
2513 {
2514         struct qedi_ctx *qedi;
2515         struct qed_ll2_params params;
2516         u8 dp_level = 0;
2517         bool is_vf = false;
2518         char host_buf[16];
2519         struct qed_link_params link_params;
2520         struct qed_slowpath_params sp_params;
2521         struct qed_probe_params qed_params;
2522         void *task_start, *task_end;
2523         int rc;
2524         u16 retry = 10;
2525
2526         if (mode != QEDI_MODE_RECOVERY) {
2527                 qedi = qedi_host_alloc(pdev);
2528                 if (!qedi) {
2529                         rc = -ENOMEM;
2530                         goto exit_probe;
2531                 }
2532         } else {
2533                 qedi = pci_get_drvdata(pdev);
2534         }
2535
2536 retry_probe:
2537         if (mode == QEDI_MODE_RECOVERY)
2538                 msleep(2000);
2539
2540         memset(&qed_params, 0, sizeof(qed_params));
2541         qed_params.protocol = QED_PROTOCOL_ISCSI;
2542         qed_params.dp_module = qedi_qed_debug;
2543         qed_params.dp_level = dp_level;
2544         qed_params.is_vf = is_vf;
2545         qedi->cdev = qedi_ops->common->probe(pdev, &qed_params);
2546         if (!qedi->cdev) {
2547                 if (mode == QEDI_MODE_RECOVERY && retry) {
2548                         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2549                                   "Retry %d initialize hardware\n", retry);
2550                         retry--;
2551                         goto retry_probe;
2552                 }
2553
2554                 rc = -ENODEV;
2555                 QEDI_ERR(&qedi->dbg_ctx, "Cannot initialize hardware\n");
2556                 goto free_host;
2557         }
2558
2559         set_bit(QEDI_ERR_ATTN_CLR_EN, &qedi->qedi_err_flags);
2560         set_bit(QEDI_ERR_IS_RECOVERABLE, &qedi->qedi_err_flags);
2561         atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
2562
2563         rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info);
2564         if (rc)
2565                 goto free_host;
2566
2567         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2568                   "dev_info: num_hwfns=%d affin_hwfn_idx=%d.\n",
2569                   qedi->dev_info.common.num_hwfns,
2570                   qedi_ops->common->get_affin_hwfn_idx(qedi->cdev));
2571
2572         rc = qedi_set_iscsi_pf_param(qedi);
2573         if (rc) {
2574                 rc = -ENOMEM;
2575                 QEDI_ERR(&qedi->dbg_ctx,
2576                          "Set iSCSI pf param fail\n");
2577                 goto free_host;
2578         }
2579
2580         qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params);
2581
2582         rc = qedi_prepare_fp(qedi);
2583         if (rc) {
2584                 QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath.\n");
2585                 goto free_pf_params;
2586         }
2587
2588         /* Start the Slowpath-process */
2589         memset(&sp_params, 0, sizeof(struct qed_slowpath_params));
2590         sp_params.int_mode = QED_INT_MODE_MSIX;
2591         sp_params.drv_major = QEDI_DRIVER_MAJOR_VER;
2592         sp_params.drv_minor = QEDI_DRIVER_MINOR_VER;
2593         sp_params.drv_rev = QEDI_DRIVER_REV_VER;
2594         sp_params.drv_eng = QEDI_DRIVER_ENG_VER;
2595         strlcpy(sp_params.name, "qedi iSCSI", QED_DRV_VER_STR_SIZE);
2596         rc = qedi_ops->common->slowpath_start(qedi->cdev, &sp_params);
2597         if (rc) {
2598                 QEDI_ERR(&qedi->dbg_ctx, "Cannot start slowpath\n");
2599                 goto stop_hw;
2600         }
2601
2602         /* update_pf_params needs to be called before and after slowpath
2603          * start
2604          */
2605         qedi_ops->common->update_pf_params(qedi->cdev, &qedi->pf_params);
2606
2607         rc = qedi_setup_int(qedi);
2608         if (rc)
2609                 goto stop_iscsi_func;
2610
2611         qedi_ops->common->set_power_state(qedi->cdev, PCI_D0);
2612
2613         /* Learn information crucial for qedi to progress */
2614         rc = qedi_ops->fill_dev_info(qedi->cdev, &qedi->dev_info);
2615         if (rc)
2616                 goto stop_iscsi_func;
2617
2618         /* Record BDQ producer doorbell addresses */
2619         qedi->bdq_primary_prod = qedi->dev_info.primary_dbq_rq_addr;
2620         qedi->bdq_secondary_prod = qedi->dev_info.secondary_bdq_rq_addr;
2621         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
2622                   "BDQ primary_prod=%p secondary_prod=%p.\n",
2623                   qedi->bdq_primary_prod,
2624                   qedi->bdq_secondary_prod);
2625
2626         /*
2627          * We need to write the number of BDs in the BDQ we've preallocated so
2628          * the f/w will do a prefetch and we'll get an unsolicited CQE when a
2629          * packet arrives.
2630          */
2631         qedi->bdq_prod_idx = QEDI_BDQ_NUM;
2632         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
2633                   "Writing %d to primary and secondary BDQ doorbell registers.\n",
2634                   qedi->bdq_prod_idx);
2635         writew(qedi->bdq_prod_idx, qedi->bdq_primary_prod);
2636         readw(qedi->bdq_primary_prod);
2637         writew(qedi->bdq_prod_idx, qedi->bdq_secondary_prod);
2638         readw(qedi->bdq_secondary_prod);
2639
2640         ether_addr_copy(qedi->mac, qedi->dev_info.common.hw_mac);
2641         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC, "MAC address is %pM.\n",
2642                   qedi->mac);
2643
2644         snprintf(host_buf, sizeof(host_buf), "host_%d", qedi->shost->host_no);
2645         qedi_ops->common->set_name(qedi->cdev, host_buf);
2646
2647         qedi_ops->register_ops(qedi->cdev, &qedi_cb_ops, qedi);
2648
2649         memset(&params, 0, sizeof(params));
2650         params.mtu = DEF_PATH_MTU + IPV6_HDR_LEN + TCP_HDR_LEN;
2651         qedi->ll2_mtu = DEF_PATH_MTU;
2652         params.drop_ttl0_packets = 0;
2653         params.rx_vlan_stripping = 1;
2654         ether_addr_copy(params.ll2_mac_address, qedi->dev_info.common.hw_mac);
2655
2656         if (mode != QEDI_MODE_RECOVERY) {
2657                 /* set up rx path */
2658                 INIT_LIST_HEAD(&qedi->ll2_skb_list);
2659                 spin_lock_init(&qedi->ll2_lock);
2660                 /* start qedi context */
2661                 spin_lock_init(&qedi->hba_lock);
2662                 spin_lock_init(&qedi->task_idx_lock);
2663                 mutex_init(&qedi->stats_lock);
2664         }
2665         qedi_ops->ll2->register_cb_ops(qedi->cdev, &qedi_ll2_cb_ops, qedi);
2666         qedi_ops->ll2->start(qedi->cdev, &params);
2667
2668         if (mode != QEDI_MODE_RECOVERY) {
2669                 qedi->ll2_recv_thread = kthread_run(qedi_ll2_recv_thread,
2670                                                     (void *)qedi,
2671                                                     "qedi_ll2_thread");
2672         }
2673
2674         rc = qedi_ops->start(qedi->cdev, &qedi->tasks,
2675                              qedi, qedi_iscsi_event_cb);
2676         if (rc) {
2677                 rc = -ENODEV;
2678                 QEDI_ERR(&qedi->dbg_ctx, "Cannot start iSCSI function\n");
2679                 goto stop_slowpath;
2680         }
2681
2682         task_start = qedi_get_task_mem(&qedi->tasks, 0);
2683         task_end = qedi_get_task_mem(&qedi->tasks, MAX_TID_BLOCKS_ISCSI - 1);
2684         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_DISC,
2685                   "Task context start=%p, end=%p block_size=%u.\n",
2686                    task_start, task_end, qedi->tasks.size);
2687
2688         memset(&link_params, 0, sizeof(link_params));
2689         link_params.link_up = true;
2690         rc = qedi_ops->common->set_link(qedi->cdev, &link_params);
2691         if (rc) {
2692                 QEDI_WARN(&qedi->dbg_ctx, "Link set up failed.\n");
2693                 atomic_set(&qedi->link_state, QEDI_LINK_DOWN);
2694         }
2695
2696 #ifdef CONFIG_DEBUG_FS
2697         qedi_dbg_host_init(&qedi->dbg_ctx, qedi_debugfs_ops,
2698                            qedi_dbg_fops);
2699 #endif
2700         QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO,
2701                   "QLogic FastLinQ iSCSI Module qedi %s, FW %d.%d.%d.%d\n",
2702                   QEDI_MODULE_VERSION, FW_MAJOR_VERSION, FW_MINOR_VERSION,
2703                   FW_REVISION_VERSION, FW_ENGINEERING_VERSION);
2704
2705         if (mode == QEDI_MODE_NORMAL) {
2706                 if (iscsi_host_add(qedi->shost, &pdev->dev)) {
2707                         QEDI_ERR(&qedi->dbg_ctx,
2708                                  "Could not add iscsi host\n");
2709                         rc = -ENOMEM;
2710                         goto remove_host;
2711                 }
2712
2713                 /* Allocate uio buffers */
2714                 rc = qedi_alloc_uio_rings(qedi);
2715                 if (rc) {
2716                         QEDI_ERR(&qedi->dbg_ctx,
2717                                  "UIO alloc ring failed err=%d\n", rc);
2718                         goto remove_host;
2719                 }
2720
2721                 rc = qedi_init_uio(qedi);
2722                 if (rc) {
2723                         QEDI_ERR(&qedi->dbg_ctx,
2724                                  "UIO init failed, err=%d\n", rc);
2725                         goto free_uio;
2726                 }
2727
2728                 /* host the array on iscsi_conn */
2729                 rc = qedi_setup_cid_que(qedi);
2730                 if (rc) {
2731                         QEDI_ERR(&qedi->dbg_ctx,
2732                                  "Could not setup cid que\n");
2733                         goto free_uio;
2734                 }
2735
2736                 rc = qedi_cm_alloc_mem(qedi);
2737                 if (rc) {
2738                         QEDI_ERR(&qedi->dbg_ctx,
2739                                  "Could not alloc cm memory\n");
2740                         goto free_cid_que;
2741                 }
2742
2743                 rc = qedi_alloc_itt(qedi);
2744                 if (rc) {
2745                         QEDI_ERR(&qedi->dbg_ctx,
2746                                  "Could not alloc itt memory\n");
2747                         goto free_cid_que;
2748                 }
2749
2750                 sprintf(host_buf, "host_%d", qedi->shost->host_no);
2751                 qedi->tmf_thread = create_singlethread_workqueue(host_buf);
2752                 if (!qedi->tmf_thread) {
2753                         QEDI_ERR(&qedi->dbg_ctx,
2754                                  "Unable to start tmf thread!\n");
2755                         rc = -ENODEV;
2756                         goto free_cid_que;
2757                 }
2758
2759                 sprintf(host_buf, "qedi_ofld%d", qedi->shost->host_no);
2760                 qedi->offload_thread = create_workqueue(host_buf);
2761                 if (!qedi->offload_thread) {
2762                         QEDI_ERR(&qedi->dbg_ctx,
2763                                  "Unable to start offload thread!\n");
2764                         rc = -ENODEV;
2765                         goto free_tmf_thread;
2766                 }
2767
2768                 INIT_DELAYED_WORK(&qedi->recovery_work, qedi_recovery_handler);
2769                 INIT_DELAYED_WORK(&qedi->board_disable_work,
2770                                   qedi_board_disable_work);
2771
2772                 /* F/w needs 1st task context memory entry for performance */
2773                 set_bit(QEDI_RESERVE_TASK_ID, qedi->task_idx_map);
2774                 atomic_set(&qedi->num_offloads, 0);
2775
2776                 if (qedi_setup_boot_info(qedi))
2777                         QEDI_ERR(&qedi->dbg_ctx,
2778                                  "No iSCSI boot target configured\n");
2779
2780                 rc = qedi_ops->common->update_drv_state(qedi->cdev, true);
2781                 if (rc)
2782                         QEDI_ERR(&qedi->dbg_ctx,
2783                                  "Failed to send drv state to MFW\n");
2784
2785         }
2786
2787         return 0;
2788
2789 free_tmf_thread:
2790         destroy_workqueue(qedi->tmf_thread);
2791 free_cid_que:
2792         qedi_release_cid_que(qedi);
2793 free_uio:
2794         qedi_free_uio(qedi->udev);
2795 remove_host:
2796 #ifdef CONFIG_DEBUG_FS
2797         qedi_dbg_host_exit(&qedi->dbg_ctx);
2798 #endif
2799         iscsi_host_remove(qedi->shost);
2800 stop_iscsi_func:
2801         qedi_ops->stop(qedi->cdev);
2802 stop_slowpath:
2803         qedi_ops->common->slowpath_stop(qedi->cdev);
2804 stop_hw:
2805         qedi_ops->common->remove(qedi->cdev);
2806 free_pf_params:
2807         qedi_free_iscsi_pf_param(qedi);
2808 free_host:
2809         iscsi_host_free(qedi->shost);
2810 exit_probe:
2811         return rc;
2812 }
2813
2814 static void qedi_mark_conn_recovery(struct iscsi_cls_session *cls_session)
2815 {
2816         struct iscsi_session *session = cls_session->dd_data;
2817         struct iscsi_conn *conn = session->leadconn;
2818         struct qedi_conn *qedi_conn = conn->dd_data;
2819
2820         iscsi_conn_failure(qedi_conn->cls_conn->dd_data, ISCSI_ERR_CONN_FAILED);
2821 }
2822
2823 static void qedi_recovery_handler(struct work_struct *work)
2824 {
2825         struct qedi_ctx *qedi =
2826                         container_of(work, struct qedi_ctx, recovery_work.work);
2827
2828         iscsi_host_for_each_session(qedi->shost, qedi_mark_conn_recovery);
2829
2830         /* Call common_ops->recovery_prolog to allow the MFW to quiesce
2831          * any PCI transactions.
2832          */
2833         qedi_ops->common->recovery_prolog(qedi->cdev);
2834
2835         __qedi_remove(qedi->pdev, QEDI_MODE_RECOVERY);
2836         __qedi_probe(qedi->pdev, QEDI_MODE_RECOVERY);
2837         clear_bit(QEDI_IN_RECOVERY, &qedi->flags);
2838 }
2839
2840 static int qedi_probe(struct pci_dev *pdev, const struct pci_device_id *id)
2841 {
2842         return __qedi_probe(pdev, QEDI_MODE_NORMAL);
2843 }
2844
2845 static void qedi_remove(struct pci_dev *pdev)
2846 {
2847         __qedi_remove(pdev, QEDI_MODE_NORMAL);
2848 }
2849
2850 static struct pci_device_id qedi_pci_tbl[] = {
2851         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x165E) },
2852         { PCI_DEVICE(PCI_VENDOR_ID_QLOGIC, 0x8084) },
2853         { 0 },
2854 };
2855 MODULE_DEVICE_TABLE(pci, qedi_pci_tbl);
2856
2857 static enum cpuhp_state qedi_cpuhp_state;
2858
2859 static struct pci_error_handlers qedi_err_handler = {
2860         .error_detected = qedi_io_error_detected,
2861 };
2862
2863 static struct pci_driver qedi_pci_driver = {
2864         .name = QEDI_MODULE_NAME,
2865         .id_table = qedi_pci_tbl,
2866         .probe = qedi_probe,
2867         .remove = qedi_remove,
2868         .shutdown = qedi_shutdown,
2869         .err_handler = &qedi_err_handler,
2870 };
2871
2872 static int __init qedi_init(void)
2873 {
2874         struct qedi_percpu_s *p;
2875         int cpu, rc = 0;
2876
2877         qedi_ops = qed_get_iscsi_ops();
2878         if (!qedi_ops) {
2879                 QEDI_ERR(NULL, "Failed to get qed iSCSI operations\n");
2880                 return -EINVAL;
2881         }
2882
2883 #ifdef CONFIG_DEBUG_FS
2884         qedi_dbg_init("qedi");
2885 #endif
2886
2887         qedi_scsi_transport = iscsi_register_transport(&qedi_iscsi_transport);
2888         if (!qedi_scsi_transport) {
2889                 QEDI_ERR(NULL, "Could not register qedi transport");
2890                 rc = -ENOMEM;
2891                 goto exit_qedi_init_1;
2892         }
2893
2894         for_each_possible_cpu(cpu) {
2895                 p = &per_cpu(qedi_percpu, cpu);
2896                 INIT_LIST_HEAD(&p->work_list);
2897                 spin_lock_init(&p->p_work_lock);
2898                 p->iothread = NULL;
2899         }
2900
2901         rc = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "scsi/qedi:online",
2902                                qedi_cpu_online, qedi_cpu_offline);
2903         if (rc < 0)
2904                 goto exit_qedi_init_2;
2905         qedi_cpuhp_state = rc;
2906
2907         rc = pci_register_driver(&qedi_pci_driver);
2908         if (rc) {
2909                 QEDI_ERR(NULL, "Failed to register driver\n");
2910                 goto exit_qedi_hp;
2911         }
2912
2913         return 0;
2914
2915 exit_qedi_hp:
2916         cpuhp_remove_state(qedi_cpuhp_state);
2917 exit_qedi_init_2:
2918         iscsi_unregister_transport(&qedi_iscsi_transport);
2919 exit_qedi_init_1:
2920 #ifdef CONFIG_DEBUG_FS
2921         qedi_dbg_exit();
2922 #endif
2923         qed_put_iscsi_ops();
2924         return rc;
2925 }
2926
2927 static void __exit qedi_cleanup(void)
2928 {
2929         pci_unregister_driver(&qedi_pci_driver);
2930         cpuhp_remove_state(qedi_cpuhp_state);
2931         iscsi_unregister_transport(&qedi_iscsi_transport);
2932
2933 #ifdef CONFIG_DEBUG_FS
2934         qedi_dbg_exit();
2935 #endif
2936         qed_put_iscsi_ops();
2937 }
2938
2939 MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx iSCSI Module");
2940 MODULE_LICENSE("GPL");
2941 MODULE_AUTHOR("QLogic Corporation");
2942 MODULE_VERSION(QEDI_MODULE_VERSION);
2943 module_init(qedi_init);
2944 module_exit(qedi_cleanup);