drivers/scsi/megaraid/megaraid_sas_base.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *  Linux MegaRAID driver for SAS based RAID controllers
   4  *
   5  *  Copyright (c) 2003-2013  LSI Corporation
   6  *  Copyright (c) 2013-2016  Avago Technologies
   7  *  Copyright (c) 2016-2018  Broadcom Inc.
   8  *
   9  *  Authors: Broadcom Inc.
  10  *           Sreenivas Bagalkote
  11  *           Sumant Patro
  12  *           Bo Yang
  13  *           Adam Radford
  14  *           Kashyap Desai <kashyap.desai@broadcom.com>
  15  *           Sumit Saxena <sumit.saxena@broadcom.com>
  16  *
  17  *  Send feedback to: megaraidlinux.pdl@broadcom.com
  18  */
  19
  20 #include <linux/kernel.h>
  21 #include <linux/types.h>
  22 #include <linux/pci.h>
  23 #include <linux/list.h>
  24 #include <linux/moduleparam.h>
  25 #include <linux/module.h>
  26 #include <linux/spinlock.h>
  27 #include <linux/interrupt.h>
  28 #include <linux/delay.h>
  29 #include <linux/uio.h>
  30 #include <linux/slab.h>
  31 #include <linux/uaccess.h>
  32 #include <asm/unaligned.h>
  33 #include <linux/fs.h>
  34 #include <linux/compat.h>
  35 #include <linux/blkdev.h>
  36 #include <linux/mutex.h>
  37 #include <linux/poll.h>
  38 #include <linux/vmalloc.h>
  39 #include <linux/irq_poll.h>
  40 #include <linux/blk-mq-pci.h>
  41
  42 #include <scsi/scsi.h>
  43 #include <scsi/scsi_cmnd.h>
  44 #include <scsi/scsi_device.h>
  45 #include <scsi/scsi_host.h>
  46 #include <scsi/scsi_tcq.h>
  47 #include <scsi/scsi_dbg.h>
  48 #include "megaraid_sas_fusion.h"
  49 #include "megaraid_sas.h"
  50
  51 /*
  52  * Number of sectors per IO command
  53  * Will be set in megasas_init_mfi if user does not provide
  54  */
  55 static unsigned int max_sectors;
  56 module_param_named(max_sectors, max_sectors, int, 0444);
  57 MODULE_PARM_DESC(max_sectors,
  58         "Maximum number of sectors per IO command");
  59
  60 static int msix_disable;
  61 module_param(msix_disable, int, 0444);
  62 MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0");
  63
  64 static unsigned int msix_vectors;
  65 module_param(msix_vectors, int, 0444);
  66 MODULE_PARM_DESC(msix_vectors, "MSI-X max vector count. Default: Set by FW");
  67
  68 static int allow_vf_ioctls;
  69 module_param(allow_vf_ioctls, int, 0444);
  70 MODULE_PARM_DESC(allow_vf_ioctls, "Allow ioctls in SR-IOV VF mode. Default: 0");
  71
  72 static unsigned int throttlequeuedepth = MEGASAS_THROTTLE_QUEUE_DEPTH;
  73 module_param(throttlequeuedepth, int, 0444);
  74 MODULE_PARM_DESC(throttlequeuedepth,
  75         "Adapter queue depth when throttled due to I/O timeout. Default: 16");
  76
  77 unsigned int resetwaittime = MEGASAS_RESET_WAIT_TIME;
  78 module_param(resetwaittime, int, 0444);
  79 MODULE_PARM_DESC(resetwaittime, "Wait time in (1-180s) after I/O timeout before resetting adapter. Default: 180s");
  80
  81 static int smp_affinity_enable = 1;
  82 module_param(smp_affinity_enable, int, 0444);
  83 MODULE_PARM_DESC(smp_affinity_enable, "SMP affinity feature enable/disable Default: enable(1)");
  84
  85 static int rdpq_enable = 1;
  86 module_param(rdpq_enable, int, 0444);
  87 MODULE_PARM_DESC(rdpq_enable, "Allocate reply queue in chunks for large queue depth enable/disable Default: enable(1)");
  88
  89 unsigned int dual_qdepth_disable;
  90 module_param(dual_qdepth_disable, int, 0444);
  91 MODULE_PARM_DESC(dual_qdepth_disable, "Disable dual queue depth feature. Default: 0");
  92
  93 static unsigned int scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
  94 module_param(scmd_timeout, int, 0444);
  95 MODULE_PARM_DESC(scmd_timeout, "scsi command timeout (10-90s), default 90s. See megasas_reset_timer.");
  96
  97 int perf_mode = -1;
  98 module_param(perf_mode, int, 0444);
  99 MODULE_PARM_DESC(perf_mode, "Performance mode (only for Aero adapters), options:\n\t\t"
 100                 "0 - balanced: High iops and low latency queues are allocated &\n\t\t"
 101                 "interrupt coalescing is enabled only on high iops queues\n\t\t"
 102                 "1 - iops: High iops queues are not allocated &\n\t\t"
 103                 "interrupt coalescing is enabled on all queues\n\t\t"
 104                 "2 - latency: High iops queues are not allocated &\n\t\t"
 105                 "interrupt coalescing is disabled on all queues\n\t\t"
 106                 "default mode is 'balanced'"
 107                 );
 108
 109 int event_log_level = MFI_EVT_CLASS_CRITICAL;
 110 module_param(event_log_level, int, 0644);
 111 MODULE_PARM_DESC(event_log_level, "Asynchronous event logging level- range is: -2(CLASS_DEBUG) to 4(CLASS_DEAD), Default: 2(CLASS_CRITICAL)");
 112
 113 unsigned int enable_sdev_max_qd;
 114 module_param(enable_sdev_max_qd, int, 0444);
 115 MODULE_PARM_DESC(enable_sdev_max_qd, "Enable sdev max qd as can_queue. Default: 0");
 116
 117 int poll_queues;
 118 module_param(poll_queues, int, 0444);
 119 MODULE_PARM_DESC(poll_queues, "Number of queues to be use for io_uring poll mode.\n\t\t"
 120                 "This parameter is effective only if host_tagset_enable=1 &\n\t\t"
 121                 "It is not applicable for MFI_SERIES. &\n\t\t"
 122                 "Driver will work in latency mode. &\n\t\t"
 123                 "High iops queues are not allocated &\n\t\t"
 124                 );
 125
 126 int host_tagset_enable = 1;
 127 module_param(host_tagset_enable, int, 0444);
 128 MODULE_PARM_DESC(host_tagset_enable, "Shared host tagset enable/disable Default: enable(1)");
 129
 130 MODULE_LICENSE("GPL");
 131 MODULE_VERSION(MEGASAS_VERSION);
 132 MODULE_AUTHOR("megaraidlinux.pdl@broadcom.com");
 133 MODULE_DESCRIPTION("Broadcom MegaRAID SAS Driver");
 134
 135 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
 136 static int megasas_get_pd_list(struct megasas_instance *instance);
 137 static int megasas_ld_list_query(struct megasas_instance *instance,
 138                                  u8 query_type);
 139 static int megasas_issue_init_mfi(struct megasas_instance *instance);
 140 static int megasas_register_aen(struct megasas_instance *instance,
 141                                 u32 seq_num, u32 class_locale_word);
 142 static void megasas_get_pd_info(struct megasas_instance *instance,
 143                                 struct scsi_device *sdev);
 144 static void
 145 megasas_set_ld_removed_by_fw(struct megasas_instance *instance);
 146
 147 /*
 148  * PCI ID table for all supported controllers
 149  */
 150 static struct pci_device_id megasas_pci_table[] = {
 151
 152         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)},
 153         /* xscale IOP */
 154         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)},
 155         /* ppc IOP */
 156         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)},
 157         /* ppc IOP */
 158         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)},
 159         /* gen2*/
 160         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)},
 161         /* gen2*/
 162         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)},
 163         /* skinny*/
 164         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)},
 165         /* skinny*/
 166         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)},
 167         /* xscale IOP, vega */
 168         {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
 169         /* xscale IOP */
 170         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)},
 171         /* Fusion */
 172         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_PLASMA)},
 173         /* Plasma */
 174         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)},
 175         /* Invader */
 176         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FURY)},
 177         /* Fury */
 178         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER)},
 179         /* Intruder */
 180         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER_24)},
 181         /* Intruder 24 port*/
 182         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_52)},
 183         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_53)},
 184         /* VENTURA */
 185         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA)},
 186         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER)},
 187         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_HARPOON)},
 188         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_TOMCAT)},
 189         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA_4PORT)},
 190         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER_4PORT)},
 191         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E1)},
 192         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E2)},
 193         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E5)},
 194         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E6)},
 195         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E0)},
 196         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E3)},
 197         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E4)},
 198         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E7)},
 199         {}
 200 };
 201
 202 MODULE_DEVICE_TABLE(pci, megasas_pci_table);
 203
 204 static int megasas_mgmt_majorno;
 205 struct megasas_mgmt_info megasas_mgmt_info;
 206 static struct fasync_struct *megasas_async_queue;
 207 static DEFINE_MUTEX(megasas_async_queue_mutex);
 208
 209 static int megasas_poll_wait_aen;
 210 static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait);
 211 static u32 support_poll_for_event;
 212 u32 megasas_dbg_lvl;
 213 static u32 support_device_change;
 214 static bool support_nvme_encapsulation;
 215 static bool support_pci_lane_margining;
 216
 217 /* define lock for aen poll */
 218 static DEFINE_SPINLOCK(poll_aen_lock);
 219
 220 extern struct dentry *megasas_debugfs_root;
 221 extern int megasas_blk_mq_poll(struct Scsi_Host *shost, unsigned int queue_num);
 222
 223 void
 224 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
 225                      u8 alt_status);
 226 static u32
 227 megasas_read_fw_status_reg_gen2(struct megasas_instance *instance);
 228 static int
 229 megasas_adp_reset_gen2(struct megasas_instance *instance,
 230                        struct megasas_register_set __iomem *reg_set);
 231 static irqreturn_t megasas_isr(int irq, void *devp);
 232 static u32
 233 megasas_init_adapter_mfi(struct megasas_instance *instance);
 234 u32
 235 megasas_build_and_issue_cmd(struct megasas_instance *instance,
 236                             struct scsi_cmnd *scmd);
 237 static void megasas_complete_cmd_dpc(unsigned long instance_addr);
 238 int
 239 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
 240         int seconds);
 241 void megasas_fusion_ocr_wq(struct work_struct *work);
 242 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
 243                                          int initial);
 244 static int
 245 megasas_set_dma_mask(struct megasas_instance *instance);
 246 static int
 247 megasas_alloc_ctrl_mem(struct megasas_instance *instance);
 248 static inline void
 249 megasas_free_ctrl_mem(struct megasas_instance *instance);
 250 static inline int
 251 megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance);
 252 static inline void
 253 megasas_free_ctrl_dma_buffers(struct megasas_instance *instance);
 254 static inline void
 255 megasas_init_ctrl_params(struct megasas_instance *instance);
 256
 257 u32 megasas_readl(struct megasas_instance *instance,
 258                   const volatile void __iomem *addr)
 259 {
 260         u32 i = 0, ret_val;
 261         /*
 262          * Due to a HW errata in Aero controllers, reads to certain
 263          * Fusion registers could intermittently return all zeroes.
 264          * This behavior is transient in nature and subsequent reads will
 265          * return valid value. As a workaround in driver, retry readl for
 266          * upto three times until a non-zero value is read.
 267          */
 268         if (instance->adapter_type == AERO_SERIES) {
 269                 do {
 270                         ret_val = readl(addr);
 271                         i++;
 272                 } while (ret_val == 0 && i < 3);
 273                 return ret_val;
 274         } else {
 275                 return readl(addr);
 276         }
 277 }
 278
 279 /**
 280  * megasas_set_dma_settings -   Populate DMA address, length and flags for DCMDs
 281  * @instance:                   Adapter soft state
 282  * @dcmd:                       DCMD frame inside MFI command
 283  * @dma_addr:                   DMA address of buffer to be passed to FW
 284  * @dma_len:                    Length of DMA buffer to be passed to FW
 285  * @return:                     void
 286  */
 287 void megasas_set_dma_settings(struct megasas_instance *instance,
 288                               struct megasas_dcmd_frame *dcmd,
 289                               dma_addr_t dma_addr, u32 dma_len)
 290 {
 291         if (instance->consistent_mask_64bit) {
 292                 dcmd->sgl.sge64[0].phys_addr = cpu_to_le64(dma_addr);
 293                 dcmd->sgl.sge64[0].length = cpu_to_le32(dma_len);
 294                 dcmd->flags = cpu_to_le16(dcmd->flags | MFI_FRAME_SGL64);
 295
 296         } else {
 297                 dcmd->sgl.sge32[0].phys_addr =
 298                                 cpu_to_le32(lower_32_bits(dma_addr));
 299                 dcmd->sgl.sge32[0].length = cpu_to_le32(dma_len);
 300                 dcmd->flags = cpu_to_le16(dcmd->flags);
 301         }
 302 }
 303
 304 static void
 305 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
 306 {
 307         instance->instancet->fire_cmd(instance,
 308                 cmd->frame_phys_addr, 0, instance->reg_set);
 309         return;
 310 }
 311
 312 /**
 313  * megasas_get_cmd -    Get a command from the free pool
 314  * @instance:           Adapter soft state
 315  *
 316  * Returns a free command from the pool
 317  */
 318 struct megasas_cmd *megasas_get_cmd(struct megasas_instance
 319                                                   *instance)
 320 {
 321         unsigned long flags;
 322         struct megasas_cmd *cmd = NULL;
 323
 324         spin_lock_irqsave(&instance->mfi_pool_lock, flags);
 325
 326         if (!list_empty(&instance->cmd_pool)) {
 327                 cmd = list_entry((&instance->cmd_pool)->next,
 328                                  struct megasas_cmd, list);
 329                 list_del_init(&cmd->list);
 330         } else {
 331                 dev_err(&instance->pdev->dev, "Command pool empty!\n");
 332         }
 333
 334         spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
 335         return cmd;
 336 }
 337
 338 /**
 339  * megasas_return_cmd - Return a cmd to free command pool
 340  * @instance:           Adapter soft state
 341  * @cmd:                Command packet to be returned to free command pool
 342  */
 343 void
 344 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
 345 {
 346         unsigned long flags;
 347         u32 blk_tags;
 348         struct megasas_cmd_fusion *cmd_fusion;
 349         struct fusion_context *fusion = instance->ctrl_context;
 350
 351         /* This flag is used only for fusion adapter.
 352          * Wait for Interrupt for Polled mode DCMD
 353          */
 354         if (cmd->flags & DRV_DCMD_POLLED_MODE)
 355                 return;
 356
 357         spin_lock_irqsave(&instance->mfi_pool_lock, flags);
 358
 359         if (fusion) {
 360                 blk_tags = instance->max_scsi_cmds + cmd->index;
 361                 cmd_fusion = fusion->cmd_list[blk_tags];
 362                 megasas_return_cmd_fusion(instance, cmd_fusion);
 363         }
 364         cmd->scmd = NULL;
 365         cmd->frame_count = 0;
 366         cmd->flags = 0;
 367         memset(cmd->frame, 0, instance->mfi_frame_size);
 368         cmd->frame->io.context = cpu_to_le32(cmd->index);
 369         if (!fusion && reset_devices)
 370                 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
 371         list_add(&cmd->list, (&instance->cmd_pool)->next);
 372
 373         spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
 374
 375 }
 376
 377 static const char *
 378 format_timestamp(uint32_t timestamp)
 379 {
 380         static char buffer[32];
 381
 382         if ((timestamp & 0xff000000) == 0xff000000)
 383                 snprintf(buffer, sizeof(buffer), "boot + %us", timestamp &
 384                 0x00ffffff);
 385         else
 386                 snprintf(buffer, sizeof(buffer), "%us", timestamp);
 387         return buffer;
 388 }
 389
 390 static const char *
 391 format_class(int8_t class)
 392 {
 393         static char buffer[6];
 394
 395         switch (class) {
 396         case MFI_EVT_CLASS_DEBUG:
 397                 return "debug";
 398         case MFI_EVT_CLASS_PROGRESS:
 399                 return "progress";
 400         case MFI_EVT_CLASS_INFO:
 401                 return "info";
 402         case MFI_EVT_CLASS_WARNING:
 403                 return "WARN";
 404         case MFI_EVT_CLASS_CRITICAL:
 405                 return "CRIT";
 406         case MFI_EVT_CLASS_FATAL:
 407                 return "FATAL";
 408         case MFI_EVT_CLASS_DEAD:
 409                 return "DEAD";
 410         default:
 411                 snprintf(buffer, sizeof(buffer), "%d", class);
 412                 return buffer;
 413         }
 414 }
 415
 416 /**
 417   * megasas_decode_evt: Decode FW AEN event and print critical event
 418   * for information.
 419   * @instance:                  Adapter soft state
 420   */
 421 static void
 422 megasas_decode_evt(struct megasas_instance *instance)
 423 {
 424         struct megasas_evt_detail *evt_detail = instance->evt_detail;
 425         union megasas_evt_class_locale class_locale;
 426         class_locale.word = le32_to_cpu(evt_detail->cl.word);
 427
 428         if ((event_log_level < MFI_EVT_CLASS_DEBUG) ||
 429             (event_log_level > MFI_EVT_CLASS_DEAD)) {
 430                 printk(KERN_WARNING "megaraid_sas: provided event log level is out of range, setting it to default 2(CLASS_CRITICAL), permissible range is: -2 to 4\n");
 431                 event_log_level = MFI_EVT_CLASS_CRITICAL;
 432         }
 433
 434         if (class_locale.members.class >= event_log_level)
 435                 dev_info(&instance->pdev->dev, "%d (%s/0x%04x/%s) - %s\n",
 436                         le32_to_cpu(evt_detail->seq_num),
 437                         format_timestamp(le32_to_cpu(evt_detail->time_stamp)),
 438                         (class_locale.members.locale),
 439                         format_class(class_locale.members.class),
 440                         evt_detail->description);
 441
 442         if (megasas_dbg_lvl & LD_PD_DEBUG)
 443                 dev_info(&instance->pdev->dev,
 444                          "evt_detail.args.ld.target_id/index %d/%d\n",
 445                          evt_detail->args.ld.target_id, evt_detail->args.ld.ld_index);
 446
 447 }
 448
 449 /*
 450  * The following functions are defined for xscale
 451  * (deviceid : 1064R, PERC5) controllers
 452  */
 453
 454 /**
 455  * megasas_enable_intr_xscale - Enables interrupts
 456  * @instance:   Adapter soft state
 457  */
 458 static inline void
 459 megasas_enable_intr_xscale(struct megasas_instance *instance)
 460 {
 461         struct megasas_register_set __iomem *regs;
 462
 463         regs = instance->reg_set;
 464         writel(0, &(regs)->outbound_intr_mask);
 465
 466         /* Dummy readl to force pci flush */
 467         readl(&regs->outbound_intr_mask);
 468 }
 469
 470 /**
 471  * megasas_disable_intr_xscale -Disables interrupt
 472  * @instance:   Adapter soft state
 473  */
 474 static inline void
 475 megasas_disable_intr_xscale(struct megasas_instance *instance)
 476 {
 477         struct megasas_register_set __iomem *regs;
 478         u32 mask = 0x1f;
 479
 480         regs = instance->reg_set;
 481         writel(mask, &regs->outbound_intr_mask);
 482         /* Dummy readl to force pci flush */
 483         readl(&regs->outbound_intr_mask);
 484 }
 485
 486 /**
 487  * megasas_read_fw_status_reg_xscale - returns the current FW status value
 488  * @instance:   Adapter soft state
 489  */
 490 static u32
 491 megasas_read_fw_status_reg_xscale(struct megasas_instance *instance)
 492 {
 493         return readl(&instance->reg_set->outbound_msg_0);
 494 }
 495 /**
 496  * megasas_clear_intr_xscale -  Check & clear interrupt
 497  * @instance:   Adapter soft state
 498  */
 499 static int
 500 megasas_clear_intr_xscale(struct megasas_instance *instance)
 501 {
 502         u32 status;
 503         u32 mfiStatus = 0;
 504         struct megasas_register_set __iomem *regs;
 505         regs = instance->reg_set;
 506
 507         /*
 508          * Check if it is our interrupt
 509          */
 510         status = readl(&regs->outbound_intr_status);
 511
 512         if (status & MFI_OB_INTR_STATUS_MASK)
 513                 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
 514         if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT)
 515                 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
 516
 517         /*
 518          * Clear the interrupt by writing back the same value
 519          */
 520         if (mfiStatus)
 521                 writel(status, &regs->outbound_intr_status);
 522
 523         /* Dummy readl to force pci flush */
 524         readl(&regs->outbound_intr_status);
 525
 526         return mfiStatus;
 527 }
 528
 529 /**
 530  * megasas_fire_cmd_xscale -    Sends command to the FW
 531  * @instance:           Adapter soft state
 532  * @frame_phys_addr :   Physical address of cmd
 533  * @frame_count :       Number of frames for the command
 534  * @regs :              MFI register set
 535  */
 536 static inline void
 537 megasas_fire_cmd_xscale(struct megasas_instance *instance,
 538                 dma_addr_t frame_phys_addr,
 539                 u32 frame_count,
 540                 struct megasas_register_set __iomem *regs)
 541 {
 542         unsigned long flags;
 543
 544         spin_lock_irqsave(&instance->hba_lock, flags);
 545         writel((frame_phys_addr >> 3)|(frame_count),
 546                &(regs)->inbound_queue_port);
 547         spin_unlock_irqrestore(&instance->hba_lock, flags);
 548 }
 549
 550 /**
 551  * megasas_adp_reset_xscale -  For controller reset
 552  * @instance:   Adapter soft state
 553  * @regs:       MFI register set
 554  */
 555 static int
 556 megasas_adp_reset_xscale(struct megasas_instance *instance,
 557         struct megasas_register_set __iomem *regs)
 558 {
 559         u32 i;
 560         u32 pcidata;
 561
 562         writel(MFI_ADP_RESET, &regs->inbound_doorbell);
 563
 564         for (i = 0; i < 3; i++)
 565                 msleep(1000); /* sleep for 3 secs */
 566         pcidata  = 0;
 567         pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata);
 568         dev_notice(&instance->pdev->dev, "pcidata = %x\n", pcidata);
 569         if (pcidata & 0x2) {
 570                 dev_notice(&instance->pdev->dev, "mfi 1068 offset read=%x\n", pcidata);
 571                 pcidata &= ~0x2;
 572                 pci_write_config_dword(instance->pdev,
 573                                 MFI_1068_PCSR_OFFSET, pcidata);
 574
 575                 for (i = 0; i < 2; i++)
 576                         msleep(1000); /* need to wait 2 secs again */
 577
 578                 pcidata  = 0;
 579                 pci_read_config_dword(instance->pdev,
 580                                 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata);
 581                 dev_notice(&instance->pdev->dev, "1068 offset handshake read=%x\n", pcidata);
 582                 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) {
 583                         dev_notice(&instance->pdev->dev, "1068 offset pcidt=%x\n", pcidata);
 584                         pcidata = 0;
 585                         pci_write_config_dword(instance->pdev,
 586                                 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata);
 587                 }
 588         }
 589         return 0;
 590 }
 591
 592 /**
 593  * megasas_check_reset_xscale - For controller reset check
 594  * @instance:   Adapter soft state
 595  * @regs:       MFI register set
 596  */
 597 static int
 598 megasas_check_reset_xscale(struct megasas_instance *instance,
 599                 struct megasas_register_set __iomem *regs)
 600 {
 601         if ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) &&
 602             (le32_to_cpu(*instance->consumer) ==
 603                 MEGASAS_ADPRESET_INPROG_SIGN))
 604                 return 1;
 605         return 0;
 606 }
 607
 608 static struct megasas_instance_template megasas_instance_template_xscale = {
 609
 610         .fire_cmd = megasas_fire_cmd_xscale,
 611         .enable_intr = megasas_enable_intr_xscale,
 612         .disable_intr = megasas_disable_intr_xscale,
 613         .clear_intr = megasas_clear_intr_xscale,
 614         .read_fw_status_reg = megasas_read_fw_status_reg_xscale,
 615         .adp_reset = megasas_adp_reset_xscale,
 616         .check_reset = megasas_check_reset_xscale,
 617         .service_isr = megasas_isr,
 618         .tasklet = megasas_complete_cmd_dpc,
 619         .init_adapter = megasas_init_adapter_mfi,
 620         .build_and_issue_cmd = megasas_build_and_issue_cmd,
 621         .issue_dcmd = megasas_issue_dcmd,
 622 };
 623
 624 /*
 625  * This is the end of set of functions & definitions specific
 626  * to xscale (deviceid : 1064R, PERC5) controllers
 627  */
 628
 629 /*
 630  * The following functions are defined for ppc (deviceid : 0x60)
 631  * controllers
 632  */
 633
 634 /**
 635  * megasas_enable_intr_ppc -    Enables interrupts
 636  * @instance:   Adapter soft state
 637  */
 638 static inline void
 639 megasas_enable_intr_ppc(struct megasas_instance *instance)
 640 {
 641         struct megasas_register_set __iomem *regs;
 642
 643         regs = instance->reg_set;
 644         writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
 645
 646         writel(~0x80000000, &(regs)->outbound_intr_mask);
 647
 648         /* Dummy readl to force pci flush */
 649         readl(&regs->outbound_intr_mask);
 650 }
 651
 652 /**
 653  * megasas_disable_intr_ppc -   Disable interrupt
 654  * @instance:   Adapter soft state
 655  */
 656 static inline void
 657 megasas_disable_intr_ppc(struct megasas_instance *instance)
 658 {
 659         struct megasas_register_set __iomem *regs;
 660         u32 mask = 0xFFFFFFFF;
 661
 662         regs = instance->reg_set;
 663         writel(mask, &regs->outbound_intr_mask);
 664         /* Dummy readl to force pci flush */
 665         readl(&regs->outbound_intr_mask);
 666 }
 667
 668 /**
 669  * megasas_read_fw_status_reg_ppc - returns the current FW status value
 670  * @instance:   Adapter soft state
 671  */
 672 static u32
 673 megasas_read_fw_status_reg_ppc(struct megasas_instance *instance)
 674 {
 675         return readl(&instance->reg_set->outbound_scratch_pad_0);
 676 }
 677
 678 /**
 679  * megasas_clear_intr_ppc -     Check & clear interrupt
 680  * @instance:   Adapter soft state
 681  */
 682 static int
 683 megasas_clear_intr_ppc(struct megasas_instance *instance)
 684 {
 685         u32 status, mfiStatus = 0;
 686         struct megasas_register_set __iomem *regs;
 687         regs = instance->reg_set;
 688
 689         /*
 690          * Check if it is our interrupt
 691          */
 692         status = readl(&regs->outbound_intr_status);
 693
 694         if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT)
 695                 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
 696
 697         if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT)
 698                 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
 699
 700         /*
 701          * Clear the interrupt by writing back the same value
 702          */
 703         writel(status, &regs->outbound_doorbell_clear);
 704
 705         /* Dummy readl to force pci flush */
 706         readl(&regs->outbound_doorbell_clear);
 707
 708         return mfiStatus;
 709 }
 710
 711 /**
 712  * megasas_fire_cmd_ppc -       Sends command to the FW
 713  * @instance:           Adapter soft state
 714  * @frame_phys_addr:    Physical address of cmd
 715  * @frame_count:        Number of frames for the command
 716  * @regs:               MFI register set
 717  */
 718 static inline void
 719 megasas_fire_cmd_ppc(struct megasas_instance *instance,
 720                 dma_addr_t frame_phys_addr,
 721                 u32 frame_count,
 722                 struct megasas_register_set __iomem *regs)
 723 {
 724         unsigned long flags;
 725
 726         spin_lock_irqsave(&instance->hba_lock, flags);
 727         writel((frame_phys_addr | (frame_count<<1))|1,
 728                         &(regs)->inbound_queue_port);
 729         spin_unlock_irqrestore(&instance->hba_lock, flags);
 730 }
 731
 732 /**
 733  * megasas_check_reset_ppc -    For controller reset check
 734  * @instance:   Adapter soft state
 735  * @regs:       MFI register set
 736  */
 737 static int
 738 megasas_check_reset_ppc(struct megasas_instance *instance,
 739                         struct megasas_register_set __iomem *regs)
 740 {
 741         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
 742                 return 1;
 743
 744         return 0;
 745 }
 746
 747 static struct megasas_instance_template megasas_instance_template_ppc = {
 748
 749         .fire_cmd = megasas_fire_cmd_ppc,
 750         .enable_intr = megasas_enable_intr_ppc,
 751         .disable_intr = megasas_disable_intr_ppc,
 752         .clear_intr = megasas_clear_intr_ppc,
 753         .read_fw_status_reg = megasas_read_fw_status_reg_ppc,
 754         .adp_reset = megasas_adp_reset_xscale,
 755         .check_reset = megasas_check_reset_ppc,
 756         .service_isr = megasas_isr,
 757         .tasklet = megasas_complete_cmd_dpc,
 758         .init_adapter = megasas_init_adapter_mfi,
 759         .build_and_issue_cmd = megasas_build_and_issue_cmd,
 760         .issue_dcmd = megasas_issue_dcmd,
 761 };
 762
 763 /**
 764  * megasas_enable_intr_skinny - Enables interrupts
 765  * @instance:   Adapter soft state
 766  */
 767 static inline void
 768 megasas_enable_intr_skinny(struct megasas_instance *instance)
 769 {
 770         struct megasas_register_set __iomem *regs;
 771
 772         regs = instance->reg_set;
 773         writel(0xFFFFFFFF, &(regs)->outbound_intr_mask);
 774
 775         writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
 776
 777         /* Dummy readl to force pci flush */
 778         readl(&regs->outbound_intr_mask);
 779 }
 780
 781 /**
 782  * megasas_disable_intr_skinny -        Disables interrupt
 783  * @instance:   Adapter soft state
 784  */
 785 static inline void
 786 megasas_disable_intr_skinny(struct megasas_instance *instance)
 787 {
 788         struct megasas_register_set __iomem *regs;
 789         u32 mask = 0xFFFFFFFF;
 790
 791         regs = instance->reg_set;
 792         writel(mask, &regs->outbound_intr_mask);
 793         /* Dummy readl to force pci flush */
 794         readl(&regs->outbound_intr_mask);
 795 }
 796
 797 /**
 798  * megasas_read_fw_status_reg_skinny - returns the current FW status value
 799  * @instance:   Adapter soft state
 800  */
 801 static u32
 802 megasas_read_fw_status_reg_skinny(struct megasas_instance *instance)
 803 {
 804         return readl(&instance->reg_set->outbound_scratch_pad_0);
 805 }
 806
 807 /**
 808  * megasas_clear_intr_skinny -  Check & clear interrupt
 809  * @instance:   Adapter soft state
 810  */
 811 static int
 812 megasas_clear_intr_skinny(struct megasas_instance *instance)
 813 {
 814         u32 status;
 815         u32 mfiStatus = 0;
 816         struct megasas_register_set __iomem *regs;
 817         regs = instance->reg_set;
 818
 819         /*
 820          * Check if it is our interrupt
 821          */
 822         status = readl(&regs->outbound_intr_status);
 823
 824         if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) {
 825                 return 0;
 826         }
 827
 828         /*
 829          * Check if it is our interrupt
 830          */
 831         if ((megasas_read_fw_status_reg_skinny(instance) & MFI_STATE_MASK) ==
 832             MFI_STATE_FAULT) {
 833                 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
 834         } else
 835                 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
 836
 837         /*
 838          * Clear the interrupt by writing back the same value
 839          */
 840         writel(status, &regs->outbound_intr_status);
 841
 842         /*
 843          * dummy read to flush PCI
 844          */
 845         readl(&regs->outbound_intr_status);
 846
 847         return mfiStatus;
 848 }
 849
 850 /**
 851  * megasas_fire_cmd_skinny -    Sends command to the FW
 852  * @instance:           Adapter soft state
 853  * @frame_phys_addr:    Physical address of cmd
 854  * @frame_count:        Number of frames for the command
 855  * @regs:               MFI register set
 856  */
 857 static inline void
 858 megasas_fire_cmd_skinny(struct megasas_instance *instance,
 859                         dma_addr_t frame_phys_addr,
 860                         u32 frame_count,
 861                         struct megasas_register_set __iomem *regs)
 862 {
 863         unsigned long flags;
 864
 865         spin_lock_irqsave(&instance->hba_lock, flags);
 866         writel(upper_32_bits(frame_phys_addr),
 867                &(regs)->inbound_high_queue_port);
 868         writel((lower_32_bits(frame_phys_addr) | (frame_count<<1))|1,
 869                &(regs)->inbound_low_queue_port);
 870         spin_unlock_irqrestore(&instance->hba_lock, flags);
 871 }
 872
 873 /**
 874  * megasas_check_reset_skinny - For controller reset check
 875  * @instance:   Adapter soft state
 876  * @regs:       MFI register set
 877  */
 878 static int
 879 megasas_check_reset_skinny(struct megasas_instance *instance,
 880                                 struct megasas_register_set __iomem *regs)
 881 {
 882         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
 883                 return 1;
 884
 885         return 0;
 886 }
 887
 888 static struct megasas_instance_template megasas_instance_template_skinny = {
 889
 890         .fire_cmd = megasas_fire_cmd_skinny,
 891         .enable_intr = megasas_enable_intr_skinny,
 892         .disable_intr = megasas_disable_intr_skinny,
 893         .clear_intr = megasas_clear_intr_skinny,
 894         .read_fw_status_reg = megasas_read_fw_status_reg_skinny,
 895         .adp_reset = megasas_adp_reset_gen2,
 896         .check_reset = megasas_check_reset_skinny,
 897         .service_isr = megasas_isr,
 898         .tasklet = megasas_complete_cmd_dpc,
 899         .init_adapter = megasas_init_adapter_mfi,
 900         .build_and_issue_cmd = megasas_build_and_issue_cmd,
 901         .issue_dcmd = megasas_issue_dcmd,
 902 };
 903
 904
 905 /*
 906  * The following functions are defined for gen2 (deviceid : 0x78 0x79)
 907  * controllers
 908  */
 909
 910 /**
 911  * megasas_enable_intr_gen2 -  Enables interrupts
 912  * @instance:   Adapter soft state
 913  */
 914 static inline void
 915 megasas_enable_intr_gen2(struct megasas_instance *instance)
 916 {
 917         struct megasas_register_set __iomem *regs;
 918
 919         regs = instance->reg_set;
 920         writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
 921
 922         /* write ~0x00000005 (4 & 1) to the intr mask*/
 923         writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
 924
 925         /* Dummy readl to force pci flush */
 926         readl(&regs->outbound_intr_mask);
 927 }
 928
 929 /**
 930  * megasas_disable_intr_gen2 - Disables interrupt
 931  * @instance:   Adapter soft state
 932  */
 933 static inline void
 934 megasas_disable_intr_gen2(struct megasas_instance *instance)
 935 {
 936         struct megasas_register_set __iomem *regs;
 937         u32 mask = 0xFFFFFFFF;
 938
 939         regs = instance->reg_set;
 940         writel(mask, &regs->outbound_intr_mask);
 941         /* Dummy readl to force pci flush */
 942         readl(&regs->outbound_intr_mask);
 943 }
 944
 945 /**
 946  * megasas_read_fw_status_reg_gen2 - returns the current FW status value
 947  * @instance:   Adapter soft state
 948  */
 949 static u32
 950 megasas_read_fw_status_reg_gen2(struct megasas_instance *instance)
 951 {
 952         return readl(&instance->reg_set->outbound_scratch_pad_0);
 953 }
 954
 955 /**
 956  * megasas_clear_intr_gen2 -      Check & clear interrupt
 957  * @instance:   Adapter soft state
 958  */
 959 static int
 960 megasas_clear_intr_gen2(struct megasas_instance *instance)
 961 {
 962         u32 status;
 963         u32 mfiStatus = 0;
 964         struct megasas_register_set __iomem *regs;
 965         regs = instance->reg_set;
 966
 967         /*
 968          * Check if it is our interrupt
 969          */
 970         status = readl(&regs->outbound_intr_status);
 971
 972         if (status & MFI_INTR_FLAG_REPLY_MESSAGE) {
 973                 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
 974         }
 975         if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) {
 976                 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
 977         }
 978
 979         /*
 980          * Clear the interrupt by writing back the same value
 981          */
 982         if (mfiStatus)
 983                 writel(status, &regs->outbound_doorbell_clear);
 984
 985         /* Dummy readl to force pci flush */
 986         readl(&regs->outbound_intr_status);
 987
 988         return mfiStatus;
 989 }
 990
 991 /**
 992  * megasas_fire_cmd_gen2 -     Sends command to the FW
 993  * @instance:           Adapter soft state
 994  * @frame_phys_addr:    Physical address of cmd
 995  * @frame_count:        Number of frames for the command
 996  * @regs:               MFI register set
 997  */
 998 static inline void
 999 megasas_fire_cmd_gen2(struct megasas_instance *instance,
1000                         dma_addr_t frame_phys_addr,
1001                         u32 frame_count,
1002                         struct megasas_register_set __iomem *regs)
1003 {
1004         unsigned long flags;
1005
1006         spin_lock_irqsave(&instance->hba_lock, flags);
1007         writel((frame_phys_addr | (frame_count<<1))|1,
1008                         &(regs)->inbound_queue_port);
1009         spin_unlock_irqrestore(&instance->hba_lock, flags);
1010 }
1011
1012 /**
1013  * megasas_adp_reset_gen2 -     For controller reset
1014  * @instance:   Adapter soft state
1015  * @reg_set:    MFI register set
1016  */
1017 static int
1018 megasas_adp_reset_gen2(struct megasas_instance *instance,
1019                         struct megasas_register_set __iomem *reg_set)
1020 {
1021         u32 retry = 0 ;
1022         u32 HostDiag;
1023         u32 __iomem *seq_offset = &reg_set->seq_offset;
1024         u32 __iomem *hostdiag_offset = &reg_set->host_diag;
1025
1026         if (instance->instancet == &megasas_instance_template_skinny) {
1027                 seq_offset = &reg_set->fusion_seq_offset;
1028                 hostdiag_offset = &reg_set->fusion_host_diag;
1029         }
1030
1031         writel(0, seq_offset);
1032         writel(4, seq_offset);
1033         writel(0xb, seq_offset);
1034         writel(2, seq_offset);
1035         writel(7, seq_offset);
1036         writel(0xd, seq_offset);
1037
1038         msleep(1000);
1039
1040         HostDiag = (u32)readl(hostdiag_offset);
1041
1042         while (!(HostDiag & DIAG_WRITE_ENABLE)) {
1043                 msleep(100);
1044                 HostDiag = (u32)readl(hostdiag_offset);
1045                 dev_notice(&instance->pdev->dev, "RESETGEN2: retry=%x, hostdiag=%x\n",
1046                                         retry, HostDiag);
1047
1048                 if (retry++ >= 100)
1049                         return 1;
1050
1051         }
1052
1053         dev_notice(&instance->pdev->dev, "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag);
1054
1055         writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset);
1056
1057         ssleep(10);
1058
1059         HostDiag = (u32)readl(hostdiag_offset);
1060         while (HostDiag & DIAG_RESET_ADAPTER) {
1061                 msleep(100);
1062                 HostDiag = (u32)readl(hostdiag_offset);
1063                 dev_notice(&instance->pdev->dev, "RESET_GEN2: retry=%x, hostdiag=%x\n",
1064                                 retry, HostDiag);
1065
1066                 if (retry++ >= 1000)
1067                         return 1;
1068
1069         }
1070         return 0;
1071 }
1072
1073 /**
1074  * megasas_check_reset_gen2 -   For controller reset check
1075  * @instance:   Adapter soft state
1076  * @regs:       MFI register set
1077  */
1078 static int
1079 megasas_check_reset_gen2(struct megasas_instance *instance,
1080                 struct megasas_register_set __iomem *regs)
1081 {
1082         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
1083                 return 1;
1084
1085         return 0;
1086 }
1087
1088 static struct megasas_instance_template megasas_instance_template_gen2 = {
1089
1090         .fire_cmd = megasas_fire_cmd_gen2,
1091         .enable_intr = megasas_enable_intr_gen2,
1092         .disable_intr = megasas_disable_intr_gen2,
1093         .clear_intr = megasas_clear_intr_gen2,
1094         .read_fw_status_reg = megasas_read_fw_status_reg_gen2,
1095         .adp_reset = megasas_adp_reset_gen2,
1096         .check_reset = megasas_check_reset_gen2,
1097         .service_isr = megasas_isr,
1098         .tasklet = megasas_complete_cmd_dpc,
1099         .init_adapter = megasas_init_adapter_mfi,
1100         .build_and_issue_cmd = megasas_build_and_issue_cmd,
1101         .issue_dcmd = megasas_issue_dcmd,
1102 };
1103
1104 /*
1105  * This is the end of set of functions & definitions
1106  * specific to gen2 (deviceid : 0x78, 0x79) controllers
1107  */
1108
1109 /*
1110  * Template added for TB (Fusion)
1111  */
1112 extern struct megasas_instance_template megasas_instance_template_fusion;
1113
1114 /**
1115  * megasas_issue_polled -       Issues a polling command
1116  * @instance:                   Adapter soft state
1117  * @cmd:                        Command packet to be issued
1118  *
1119  * For polling, MFI requires the cmd_status to be set to MFI_STAT_INVALID_STATUS before posting.
1120  */
1121 int
1122 megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
1123 {
1124         struct megasas_header *frame_hdr = &cmd->frame->hdr;
1125
1126         frame_hdr->cmd_status = MFI_STAT_INVALID_STATUS;
1127         frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
1128
1129         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1130                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1131                         __func__, __LINE__);
1132                 return DCMD_INIT;
1133         }
1134
1135         instance->instancet->issue_dcmd(instance, cmd);
1136
1137         return wait_and_poll(instance, cmd, instance->requestorId ?
1138                         MEGASAS_ROUTINE_WAIT_TIME_VF : MFI_IO_TIMEOUT_SECS);
1139 }
1140
1141 /**
1142  * megasas_issue_blocked_cmd -  Synchronous wrapper around regular FW cmds
1143  * @instance:                   Adapter soft state
1144  * @cmd:                        Command to be issued
1145  * @timeout:                    Timeout in seconds
1146  *
1147  * This function waits on an event for the command to be returned from ISR.
1148  * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1149  * Used to issue ioctl commands.
1150  */
1151 int
1152 megasas_issue_blocked_cmd(struct megasas_instance *instance,
1153                           struct megasas_cmd *cmd, int timeout)
1154 {
1155         int ret = 0;
1156         cmd->cmd_status_drv = DCMD_INIT;
1157
1158         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1159                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1160                         __func__, __LINE__);
1161                 return DCMD_INIT;
1162         }
1163
1164         instance->instancet->issue_dcmd(instance, cmd);
1165
1166         if (timeout) {
1167                 ret = wait_event_timeout(instance->int_cmd_wait_q,
1168                 cmd->cmd_status_drv != DCMD_INIT, timeout * HZ);
1169                 if (!ret) {
1170                         dev_err(&instance->pdev->dev,
1171                                 "DCMD(opcode: 0x%x) is timed out, func:%s\n",
1172                                 cmd->frame->dcmd.opcode, __func__);
1173                         return DCMD_TIMEOUT;
1174                 }
1175         } else
1176                 wait_event(instance->int_cmd_wait_q,
1177                                 cmd->cmd_status_drv != DCMD_INIT);
1178
1179         return cmd->cmd_status_drv;
1180 }
1181
1182 /**
1183  * megasas_issue_blocked_abort_cmd -    Aborts previously issued cmd
1184  * @instance:                           Adapter soft state
1185  * @cmd_to_abort:                       Previously issued cmd to be aborted
1186  * @timeout:                            Timeout in seconds
1187  *
1188  * MFI firmware can abort previously issued AEN comamnd (automatic event
1189  * notification). The megasas_issue_blocked_abort_cmd() issues such abort
1190  * cmd and waits for return status.
1191  * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1192  */
1193 static int
1194 megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
1195                                 struct megasas_cmd *cmd_to_abort, int timeout)
1196 {
1197         struct megasas_cmd *cmd;
1198         struct megasas_abort_frame *abort_fr;
1199         int ret = 0;
1200         u32 opcode;
1201
1202         cmd = megasas_get_cmd(instance);
1203
1204         if (!cmd)
1205                 return -1;
1206
1207         abort_fr = &cmd->frame->abort;
1208
1209         /*
1210          * Prepare and issue the abort frame
1211          */
1212         abort_fr->cmd = MFI_CMD_ABORT;
1213         abort_fr->cmd_status = MFI_STAT_INVALID_STATUS;
1214         abort_fr->flags = cpu_to_le16(0);
1215         abort_fr->abort_context = cpu_to_le32(cmd_to_abort->index);
1216         abort_fr->abort_mfi_phys_addr_lo =
1217                 cpu_to_le32(lower_32_bits(cmd_to_abort->frame_phys_addr));
1218         abort_fr->abort_mfi_phys_addr_hi =
1219                 cpu_to_le32(upper_32_bits(cmd_to_abort->frame_phys_addr));
1220
1221         cmd->sync_cmd = 1;
1222         cmd->cmd_status_drv = DCMD_INIT;
1223
1224         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1225                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1226                         __func__, __LINE__);
1227                 return DCMD_INIT;
1228         }
1229
1230         instance->instancet->issue_dcmd(instance, cmd);
1231
1232         if (timeout) {
1233                 ret = wait_event_timeout(instance->abort_cmd_wait_q,
1234                 cmd->cmd_status_drv != DCMD_INIT, timeout * HZ);
1235                 if (!ret) {
1236                         opcode = cmd_to_abort->frame->dcmd.opcode;
1237                         dev_err(&instance->pdev->dev,
1238                                 "Abort(to be aborted DCMD opcode: 0x%x) is timed out func:%s\n",
1239                                 opcode,  __func__);
1240                         return DCMD_TIMEOUT;
1241                 }
1242         } else
1243                 wait_event(instance->abort_cmd_wait_q,
1244                 cmd->cmd_status_drv != DCMD_INIT);
1245
1246         cmd->sync_cmd = 0;
1247
1248         megasas_return_cmd(instance, cmd);
1249         return cmd->cmd_status_drv;
1250 }
1251
1252 /**
1253  * megasas_make_sgl32 - Prepares 32-bit SGL
1254  * @instance:           Adapter soft state
1255  * @scp:                SCSI command from the mid-layer
1256  * @mfi_sgl:            SGL to be filled in
1257  *
1258  * If successful, this function returns the number of SG elements. Otherwise,
1259  * it returnes -1.
1260  */
1261 static int
1262 megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp,
1263                    union megasas_sgl *mfi_sgl)
1264 {
1265         int i;
1266         int sge_count;
1267         struct scatterlist *os_sgl;
1268
1269         sge_count = scsi_dma_map(scp);
1270         BUG_ON(sge_count < 0);
1271
1272         if (sge_count) {
1273                 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1274                         mfi_sgl->sge32[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1275                         mfi_sgl->sge32[i].phys_addr = cpu_to_le32(sg_dma_address(os_sgl));
1276                 }
1277         }
1278         return sge_count;
1279 }
1280
1281 /**
1282  * megasas_make_sgl64 - Prepares 64-bit SGL
1283  * @instance:           Adapter soft state
1284  * @scp:                SCSI command from the mid-layer
1285  * @mfi_sgl:            SGL to be filled in
1286  *
1287  * If successful, this function returns the number of SG elements. Otherwise,
1288  * it returnes -1.
1289  */
1290 static int
1291 megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp,
1292                    union megasas_sgl *mfi_sgl)
1293 {
1294         int i;
1295         int sge_count;
1296         struct scatterlist *os_sgl;
1297
1298         sge_count = scsi_dma_map(scp);
1299         BUG_ON(sge_count < 0);
1300
1301         if (sge_count) {
1302                 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1303                         mfi_sgl->sge64[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1304                         mfi_sgl->sge64[i].phys_addr = cpu_to_le64(sg_dma_address(os_sgl));
1305                 }
1306         }
1307         return sge_count;
1308 }
1309
1310 /**
1311  * megasas_make_sgl_skinny - Prepares IEEE SGL
1312  * @instance:           Adapter soft state
1313  * @scp:                SCSI command from the mid-layer
1314  * @mfi_sgl:            SGL to be filled in
1315  *
1316  * If successful, this function returns the number of SG elements. Otherwise,
1317  * it returnes -1.
1318  */
1319 static int
1320 megasas_make_sgl_skinny(struct megasas_instance *instance,
1321                 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)
1322 {
1323         int i;
1324         int sge_count;
1325         struct scatterlist *os_sgl;
1326
1327         sge_count = scsi_dma_map(scp);
1328
1329         if (sge_count) {
1330                 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1331                         mfi_sgl->sge_skinny[i].length =
1332                                 cpu_to_le32(sg_dma_len(os_sgl));
1333                         mfi_sgl->sge_skinny[i].phys_addr =
1334                                 cpu_to_le64(sg_dma_address(os_sgl));
1335                         mfi_sgl->sge_skinny[i].flag = cpu_to_le32(0);
1336                 }
1337         }
1338         return sge_count;
1339 }
1340
1341  /**
1342  * megasas_get_frame_count - Computes the number of frames
1343  * @frame_type          : type of frame- io or pthru frame
1344  * @sge_count           : number of sg elements
1345  *
1346  * Returns the number of frames required for numnber of sge's (sge_count)
1347  */
1348
1349 static u32 megasas_get_frame_count(struct megasas_instance *instance,
1350                         u8 sge_count, u8 frame_type)
1351 {
1352         int num_cnt;
1353         int sge_bytes;
1354         u32 sge_sz;
1355         u32 frame_count = 0;
1356
1357         sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
1358             sizeof(struct megasas_sge32);
1359
1360         if (instance->flag_ieee) {
1361                 sge_sz = sizeof(struct megasas_sge_skinny);
1362         }
1363
1364         /*
1365          * Main frame can contain 2 SGEs for 64-bit SGLs and
1366          * 3 SGEs for 32-bit SGLs for ldio &
1367          * 1 SGEs for 64-bit SGLs and
1368          * 2 SGEs for 32-bit SGLs for pthru frame
1369          */
1370         if (unlikely(frame_type == PTHRU_FRAME)) {
1371                 if (instance->flag_ieee == 1) {
1372                         num_cnt = sge_count - 1;
1373                 } else if (IS_DMA64)
1374                         num_cnt = sge_count - 1;
1375                 else
1376                         num_cnt = sge_count - 2;
1377         } else {
1378                 if (instance->flag_ieee == 1) {
1379                         num_cnt = sge_count - 1;
1380                 } else if (IS_DMA64)
1381                         num_cnt = sge_count - 2;
1382                 else
1383                         num_cnt = sge_count - 3;
1384         }
1385
1386         if (num_cnt > 0) {
1387                 sge_bytes = sge_sz * num_cnt;
1388
1389                 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
1390                     ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ;
1391         }
1392         /* Main frame */
1393         frame_count += 1;
1394
1395         if (frame_count > 7)
1396                 frame_count = 8;
1397         return frame_count;
1398 }
1399
1400 /**
1401  * megasas_build_dcdb - Prepares a direct cdb (DCDB) command
1402  * @instance:           Adapter soft state
1403  * @scp:                SCSI command
1404  * @cmd:                Command to be prepared in
1405  *
1406  * This function prepares CDB commands. These are typcially pass-through
1407  * commands to the devices.
1408  */
1409 static int
1410 megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
1411                    struct megasas_cmd *cmd)
1412 {
1413         u32 is_logical;
1414         u32 device_id;
1415         u16 flags = 0;
1416         struct megasas_pthru_frame *pthru;
1417
1418         is_logical = MEGASAS_IS_LOGICAL(scp->device);
1419         device_id = MEGASAS_DEV_INDEX(scp);
1420         pthru = (struct megasas_pthru_frame *)cmd->frame;
1421
1422         if (scp->sc_data_direction == DMA_TO_DEVICE)
1423                 flags = MFI_FRAME_DIR_WRITE;
1424         else if (scp->sc_data_direction == DMA_FROM_DEVICE)
1425                 flags = MFI_FRAME_DIR_READ;
1426         else if (scp->sc_data_direction == DMA_NONE)
1427                 flags = MFI_FRAME_DIR_NONE;
1428
1429         if (instance->flag_ieee == 1) {
1430                 flags |= MFI_FRAME_IEEE;
1431         }
1432
1433         /*
1434          * Prepare the DCDB frame
1435          */
1436         pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO;
1437         pthru->cmd_status = 0x0;
1438         pthru->scsi_status = 0x0;
1439         pthru->target_id = device_id;
1440         pthru->lun = scp->device->lun;
1441         pthru->cdb_len = scp->cmd_len;
1442         pthru->timeout = 0;
1443         pthru->pad_0 = 0;
1444         pthru->flags = cpu_to_le16(flags);
1445         pthru->data_xfer_len = cpu_to_le32(scsi_bufflen(scp));
1446
1447         memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
1448
1449         /*
1450          * If the command is for the tape device, set the
1451          * pthru timeout to the os layer timeout value.
1452          */
1453         if (scp->device->type == TYPE_TAPE) {
1454                 if (scsi_cmd_to_rq(scp)->timeout / HZ > 0xFFFF)
1455                         pthru->timeout = cpu_to_le16(0xFFFF);
1456                 else
1457                         pthru->timeout = cpu_to_le16(scsi_cmd_to_rq(scp)->timeout / HZ);
1458         }
1459
1460         /*
1461          * Construct SGL
1462          */
1463         if (instance->flag_ieee == 1) {
1464                 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1465                 pthru->sge_count = megasas_make_sgl_skinny(instance, scp,
1466                                                       &pthru->sgl);
1467         } else if (IS_DMA64) {
1468                 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1469                 pthru->sge_count = megasas_make_sgl64(instance, scp,
1470                                                       &pthru->sgl);
1471         } else
1472                 pthru->sge_count = megasas_make_sgl32(instance, scp,
1473                                                       &pthru->sgl);
1474
1475         if (pthru->sge_count > instance->max_num_sge) {
1476                 dev_err(&instance->pdev->dev, "DCDB too many SGE NUM=%x\n",
1477                         pthru->sge_count);
1478                 return 0;
1479         }
1480
1481         /*
1482          * Sense info specific
1483          */
1484         pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
1485         pthru->sense_buf_phys_addr_hi =
1486                 cpu_to_le32(upper_32_bits(cmd->sense_phys_addr));
1487         pthru->sense_buf_phys_addr_lo =
1488                 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
1489
1490         /*
1491          * Compute the total number of frames this command consumes. FW uses
1492          * this number to pull sufficient number of frames from host memory.
1493          */
1494         cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count,
1495                                                         PTHRU_FRAME);
1496
1497         return cmd->frame_count;
1498 }
1499
1500 /**
1501  * megasas_build_ldio - Prepares IOs to logical devices
1502  * @instance:           Adapter soft state
1503  * @scp:                SCSI command
1504  * @cmd:                Command to be prepared
1505  *
1506  * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
1507  */
1508 static int
1509 megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
1510                    struct megasas_cmd *cmd)
1511 {
1512         u32 device_id;
1513         u8 sc = scp->cmnd[0];
1514         u16 flags = 0;
1515         struct megasas_io_frame *ldio;
1516
1517         device_id = MEGASAS_DEV_INDEX(scp);
1518         ldio = (struct megasas_io_frame *)cmd->frame;
1519
1520         if (scp->sc_data_direction == DMA_TO_DEVICE)
1521                 flags = MFI_FRAME_DIR_WRITE;
1522         else if (scp->sc_data_direction == DMA_FROM_DEVICE)
1523                 flags = MFI_FRAME_DIR_READ;
1524
1525         if (instance->flag_ieee == 1) {
1526                 flags |= MFI_FRAME_IEEE;
1527         }
1528
1529         /*
1530          * Prepare the Logical IO frame: 2nd bit is zero for all read cmds
1531          */
1532         ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ;
1533         ldio->cmd_status = 0x0;
1534         ldio->scsi_status = 0x0;
1535         ldio->target_id = device_id;
1536         ldio->timeout = 0;
1537         ldio->reserved_0 = 0;
1538         ldio->pad_0 = 0;
1539         ldio->flags = cpu_to_le16(flags);
1540         ldio->start_lba_hi = 0;
1541         ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;
1542
1543         /*
1544          * 6-byte READ(0x08) or WRITE(0x0A) cdb
1545          */
1546         if (scp->cmd_len == 6) {
1547                 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[4]);
1548                 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[1] << 16) |
1549                                                  ((u32) scp->cmnd[2] << 8) |
1550                                                  (u32) scp->cmnd[3]);
1551
1552                 ldio->start_lba_lo &= cpu_to_le32(0x1FFFFF);
1553         }
1554
1555         /*
1556          * 10-byte READ(0x28) or WRITE(0x2A) cdb
1557          */
1558         else if (scp->cmd_len == 10) {
1559                 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[8] |
1560                                               ((u32) scp->cmnd[7] << 8));
1561                 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1562                                                  ((u32) scp->cmnd[3] << 16) |
1563                                                  ((u32) scp->cmnd[4] << 8) |
1564                                                  (u32) scp->cmnd[5]);
1565         }
1566
1567         /*
1568          * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1569          */
1570         else if (scp->cmd_len == 12) {
1571                 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1572                                               ((u32) scp->cmnd[7] << 16) |
1573                                               ((u32) scp->cmnd[8] << 8) |
1574                                               (u32) scp->cmnd[9]);
1575
1576                 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1577                                                  ((u32) scp->cmnd[3] << 16) |
1578                                                  ((u32) scp->cmnd[4] << 8) |
1579                                                  (u32) scp->cmnd[5]);
1580         }
1581
1582         /*
1583          * 16-byte READ(0x88) or WRITE(0x8A) cdb
1584          */
1585         else if (scp->cmd_len == 16) {
1586                 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[10] << 24) |
1587                                               ((u32) scp->cmnd[11] << 16) |
1588                                               ((u32) scp->cmnd[12] << 8) |
1589                                               (u32) scp->cmnd[13]);
1590
1591                 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1592                                                  ((u32) scp->cmnd[7] << 16) |
1593                                                  ((u32) scp->cmnd[8] << 8) |
1594                                                  (u32) scp->cmnd[9]);
1595
1596                 ldio->start_lba_hi = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1597                                                  ((u32) scp->cmnd[3] << 16) |
1598                                                  ((u32) scp->cmnd[4] << 8) |
1599                                                  (u32) scp->cmnd[5]);
1600
1601         }
1602
1603         /*
1604          * Construct SGL
1605          */
1606         if (instance->flag_ieee) {
1607                 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1608                 ldio->sge_count = megasas_make_sgl_skinny(instance, scp,
1609                                               &ldio->sgl);
1610         } else if (IS_DMA64) {
1611                 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1612                 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl);
1613         } else
1614                 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl);
1615
1616         if (ldio->sge_count > instance->max_num_sge) {
1617                 dev_err(&instance->pdev->dev, "build_ld_io: sge_count = %x\n",
1618                         ldio->sge_count);
1619                 return 0;
1620         }
1621
1622         /*
1623          * Sense info specific
1624          */
1625         ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
1626         ldio->sense_buf_phys_addr_hi = 0;
1627         ldio->sense_buf_phys_addr_lo = cpu_to_le32(cmd->sense_phys_addr);
1628
1629         /*
1630          * Compute the total number of frames this command consumes. FW uses
1631          * this number to pull sufficient number of frames from host memory.
1632          */
1633         cmd->frame_count = megasas_get_frame_count(instance,
1634                         ldio->sge_count, IO_FRAME);
1635
1636         return cmd->frame_count;
1637 }
1638
1639 /**
1640  * megasas_cmd_type -           Checks if the cmd is for logical drive/sysPD
1641  *                              and whether it's RW or non RW
1642  * @cmd:                        SCSI command
1643  *
1644  */
1645 inline int megasas_cmd_type(struct scsi_cmnd *cmd)
1646 {
1647         int ret;
1648
1649         switch (cmd->cmnd[0]) {
1650         case READ_10:
1651         case WRITE_10:
1652         case READ_12:
1653         case WRITE_12:
1654         case READ_6:
1655         case WRITE_6:
1656         case READ_16:
1657         case WRITE_16:
1658                 ret = (MEGASAS_IS_LOGICAL(cmd->device)) ?
1659                         READ_WRITE_LDIO : READ_WRITE_SYSPDIO;
1660                 break;
1661         default:
1662                 ret = (MEGASAS_IS_LOGICAL(cmd->device)) ?
1663                         NON_READ_WRITE_LDIO : NON_READ_WRITE_SYSPDIO;
1664         }
1665         return ret;
1666 }
1667
1668  /**
1669  * megasas_dump_pending_frames -        Dumps the frame address of all pending cmds
1670  *                                      in FW
1671  * @instance:                           Adapter soft state
1672  */
1673 static inline void
1674 megasas_dump_pending_frames(struct megasas_instance *instance)
1675 {
1676         struct megasas_cmd *cmd;
1677         int i,n;
1678         union megasas_sgl *mfi_sgl;
1679         struct megasas_io_frame *ldio;
1680         struct megasas_pthru_frame *pthru;
1681         u32 sgcount;
1682         u16 max_cmd = instance->max_fw_cmds;
1683
1684         dev_err(&instance->pdev->dev, "[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no);
1685         dev_err(&instance->pdev->dev, "[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding));
1686         if (IS_DMA64)
1687                 dev_err(&instance->pdev->dev, "[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no);
1688         else
1689                 dev_err(&instance->pdev->dev, "[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no);
1690
1691         dev_err(&instance->pdev->dev, "[%d]: Pending OS cmds in FW : \n",instance->host->host_no);
1692         for (i = 0; i < max_cmd; i++) {
1693                 cmd = instance->cmd_list[i];
1694                 if (!cmd->scmd)
1695                         continue;
1696                 dev_err(&instance->pdev->dev, "[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr);
1697                 if (megasas_cmd_type(cmd->scmd) == READ_WRITE_LDIO) {
1698                         ldio = (struct megasas_io_frame *)cmd->frame;
1699                         mfi_sgl = &ldio->sgl;
1700                         sgcount = ldio->sge_count;
1701                         dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x,"
1702                         " lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1703                         instance->host->host_no, cmd->frame_count, ldio->cmd, ldio->target_id,
1704                         le32_to_cpu(ldio->start_lba_lo), le32_to_cpu(ldio->start_lba_hi),
1705                         le32_to_cpu(ldio->sense_buf_phys_addr_lo), sgcount);
1706                 } else {
1707                         pthru = (struct megasas_pthru_frame *) cmd->frame;
1708                         mfi_sgl = &pthru->sgl;
1709                         sgcount = pthru->sge_count;
1710                         dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, "
1711                         "lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1712                         instance->host->host_no, cmd->frame_count, pthru->cmd, pthru->target_id,
1713                         pthru->lun, pthru->cdb_len, le32_to_cpu(pthru->data_xfer_len),
1714                         le32_to_cpu(pthru->sense_buf_phys_addr_lo), sgcount);
1715                 }
1716                 if (megasas_dbg_lvl & MEGASAS_DBG_LVL) {
1717                         for (n = 0; n < sgcount; n++) {
1718                                 if (IS_DMA64)
1719                                         dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%llx\n",
1720                                                 le32_to_cpu(mfi_sgl->sge64[n].length),
1721                                                 le64_to_cpu(mfi_sgl->sge64[n].phys_addr));
1722                                 else
1723                                         dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%x\n",
1724                                                 le32_to_cpu(mfi_sgl->sge32[n].length),
1725                                                 le32_to_cpu(mfi_sgl->sge32[n].phys_addr));
1726                         }
1727                 }
1728         } /*for max_cmd*/
1729         dev_err(&instance->pdev->dev, "[%d]: Pending Internal cmds in FW : \n",instance->host->host_no);
1730         for (i = 0; i < max_cmd; i++) {
1731
1732                 cmd = instance->cmd_list[i];
1733
1734                 if (cmd->sync_cmd == 1)
1735                         dev_err(&instance->pdev->dev, "0x%08lx : ", (unsigned long)cmd->frame_phys_addr);
1736         }
1737         dev_err(&instance->pdev->dev, "[%d]: Dumping Done\n\n",instance->host->host_no);
1738 }
1739
1740 u32
1741 megasas_build_and_issue_cmd(struct megasas_instance *instance,
1742                             struct scsi_cmnd *scmd)
1743 {
1744         struct megasas_cmd *cmd;
1745         u32 frame_count;
1746
1747         cmd = megasas_get_cmd(instance);
1748         if (!cmd)
1749                 return SCSI_MLQUEUE_HOST_BUSY;
1750
1751         /*
1752          * Logical drive command
1753          */
1754         if (megasas_cmd_type(scmd) == READ_WRITE_LDIO)
1755                 frame_count = megasas_build_ldio(instance, scmd, cmd);
1756         else
1757                 frame_count = megasas_build_dcdb(instance, scmd, cmd);
1758
1759         if (!frame_count)
1760                 goto out_return_cmd;
1761
1762         cmd->scmd = scmd;
1763         scmd->SCp.ptr = (char *)cmd;
1764
1765         /*
1766          * Issue the command to the FW
1767          */
1768         atomic_inc(&instance->fw_outstanding);
1769
1770         instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
1771                                 cmd->frame_count-1, instance->reg_set);
1772
1773         return 0;
1774 out_return_cmd:
1775         megasas_return_cmd(instance, cmd);
1776         return SCSI_MLQUEUE_HOST_BUSY;
1777 }
1778
1779
1780 /**
1781  * megasas_queue_command -      Queue entry point
1782  * @shost:                      adapter SCSI host
1783  * @scmd:                       SCSI command to be queued
1784  */
1785 static int
1786 megasas_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
1787 {
1788         struct megasas_instance *instance;
1789         struct MR_PRIV_DEVICE *mr_device_priv_data;
1790         u32 ld_tgt_id;
1791
1792         instance = (struct megasas_instance *)
1793             scmd->device->host->hostdata;
1794
1795         if (instance->unload == 1) {
1796                 scmd->result = DID_NO_CONNECT << 16;
1797                 scmd->scsi_done(scmd);
1798                 return 0;
1799         }
1800
1801         if (instance->issuepend_done == 0)
1802                 return SCSI_MLQUEUE_HOST_BUSY;
1803
1804
1805         /* Check for an mpio path and adjust behavior */
1806         if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
1807                 if (megasas_check_mpio_paths(instance, scmd) ==
1808                     (DID_REQUEUE << 16)) {
1809                         return SCSI_MLQUEUE_HOST_BUSY;
1810                 } else {
1811                         scmd->result = DID_NO_CONNECT << 16;
1812                         scmd->scsi_done(scmd);
1813                         return 0;
1814                 }
1815         }
1816
1817         mr_device_priv_data = scmd->device->hostdata;
1818         if (!mr_device_priv_data ||
1819             (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)) {
1820                 scmd->result = DID_NO_CONNECT << 16;
1821                 scmd->scsi_done(scmd);
1822                 return 0;
1823         }
1824
1825         if (MEGASAS_IS_LOGICAL(scmd->device)) {
1826                 ld_tgt_id = MEGASAS_TARGET_ID(scmd->device);
1827                 if (instance->ld_tgtid_status[ld_tgt_id] == LD_TARGET_ID_DELETED) {
1828                         scmd->result = DID_NO_CONNECT << 16;
1829                         scmd->scsi_done(scmd);
1830                         return 0;
1831                 }
1832         }
1833
1834         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
1835                 return SCSI_MLQUEUE_HOST_BUSY;
1836
1837         if (mr_device_priv_data->tm_busy)
1838                 return SCSI_MLQUEUE_DEVICE_BUSY;
1839
1840
1841         scmd->result = 0;
1842
1843         if (MEGASAS_IS_LOGICAL(scmd->device) &&
1844             (scmd->device->id >= instance->fw_supported_vd_count ||
1845                 scmd->device->lun)) {
1846                 scmd->result = DID_BAD_TARGET << 16;
1847                 goto out_done;
1848         }
1849
1850         if ((scmd->cmnd[0] == SYNCHRONIZE_CACHE) &&
1851             MEGASAS_IS_LOGICAL(scmd->device) &&
1852             (!instance->fw_sync_cache_support)) {
1853                 scmd->result = DID_OK << 16;
1854                 goto out_done;
1855         }
1856
1857         return instance->instancet->build_and_issue_cmd(instance, scmd);
1858
1859  out_done:
1860         scmd->scsi_done(scmd);
1861         return 0;
1862 }
1863
1864 static struct megasas_instance *megasas_lookup_instance(u16 host_no)
1865 {
1866         int i;
1867
1868         for (i = 0; i < megasas_mgmt_info.max_index; i++) {
1869
1870                 if ((megasas_mgmt_info.instance[i]) &&
1871                     (megasas_mgmt_info.instance[i]->host->host_no == host_no))
1872                         return megasas_mgmt_info.instance[i];
1873         }
1874
1875         return NULL;
1876 }
1877
1878 /*
1879 * megasas_set_dynamic_target_properties -
1880 * Device property set by driver may not be static and it is required to be
1881 * updated after OCR
1882 *
1883 * set tm_capable.
1884 * set dma alignment (only for eedp protection enable vd).
1885 *
1886 * @sdev: OS provided scsi device
1887 *
1888 * Returns void
1889 */
1890 void megasas_set_dynamic_target_properties(struct scsi_device *sdev,
1891                                            bool is_target_prop)
1892 {
1893         u16 pd_index = 0, ld;
1894         u32 device_id;
1895         struct megasas_instance *instance;
1896         struct fusion_context *fusion;
1897         struct MR_PRIV_DEVICE *mr_device_priv_data;
1898         struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
1899         struct MR_LD_RAID *raid;
1900         struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
1901
1902         instance = megasas_lookup_instance(sdev->host->host_no);
1903         fusion = instance->ctrl_context;
1904         mr_device_priv_data = sdev->hostdata;
1905
1906         if (!fusion || !mr_device_priv_data)
1907                 return;
1908
1909         if (MEGASAS_IS_LOGICAL(sdev)) {
1910                 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL)
1911                                         + sdev->id;
1912                 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
1913                 ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
1914                 if (ld >= instance->fw_supported_vd_count)
1915                         return;
1916                 raid = MR_LdRaidGet(ld, local_map_ptr);
1917
1918                 if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER)
1919                         blk_queue_update_dma_alignment(sdev->request_queue, 0x7);
1920
1921                 mr_device_priv_data->is_tm_capable =
1922                         raid->capability.tmCapable;
1923
1924                 if (!raid->flags.isEPD)
1925                         sdev->no_write_same = 1;
1926
1927         } else if (instance->use_seqnum_jbod_fp) {
1928                 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1929                         sdev->id;
1930                 pd_sync = (void *)fusion->pd_seq_sync
1931                                 [(instance->pd_seq_map_id - 1) & 1];
1932                 mr_device_priv_data->is_tm_capable =
1933                         pd_sync->seq[pd_index].capability.tmCapable;
1934         }
1935
1936         if (is_target_prop && instance->tgt_prop->reset_tmo) {
1937                 /*
1938                  * If FW provides a target reset timeout value, driver will use
1939                  * it. If not set, fallback to default values.
1940                  */
1941                 mr_device_priv_data->target_reset_tmo =
1942                         min_t(u8, instance->max_reset_tmo,
1943                               instance->tgt_prop->reset_tmo);
1944                 mr_device_priv_data->task_abort_tmo = instance->task_abort_tmo;
1945         } else {
1946                 mr_device_priv_data->target_reset_tmo =
1947                                                 MEGASAS_DEFAULT_TM_TIMEOUT;
1948                 mr_device_priv_data->task_abort_tmo =
1949                                                 MEGASAS_DEFAULT_TM_TIMEOUT;
1950         }
1951 }
1952
1953 /*
1954  * megasas_set_nvme_device_properties -
1955  * set nomerges=2
1956  * set virtual page boundary = 4K (current mr_nvme_pg_size is 4K).
1957  * set maximum io transfer = MDTS of NVME device provided by MR firmware.
1958  *
1959  * MR firmware provides value in KB. Caller of this function converts
1960  * kb into bytes.
1961  *
1962  * e.a MDTS=5 means 2^5 * nvme page size. (In case of 4K page size,
1963  * MR firmware provides value 128 as (32 * 4K) = 128K.
1964  *
1965  * @sdev:                               scsi device
1966  * @max_io_size:                                maximum io transfer size
1967  *
1968  */
1969 static inline void
1970 megasas_set_nvme_device_properties(struct scsi_device *sdev, u32 max_io_size)
1971 {
1972         struct megasas_instance *instance;
1973         u32 mr_nvme_pg_size;
1974
1975         instance = (struct megasas_instance *)sdev->host->hostdata;
1976         mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
1977                                 MR_DEFAULT_NVME_PAGE_SIZE);
1978
1979         blk_queue_max_hw_sectors(sdev->request_queue, (max_io_size / 512));
1980
1981         blk_queue_flag_set(QUEUE_FLAG_NOMERGES, sdev->request_queue);
1982         blk_queue_virt_boundary(sdev->request_queue, mr_nvme_pg_size - 1);
1983 }
1984
1985 /*
1986  * megasas_set_fw_assisted_qd -
1987  * set device queue depth to can_queue
1988  * set device queue depth to fw assisted qd
1989  *
1990  * @sdev:                               scsi device
1991  * @is_target_prop                      true, if fw provided target properties.
1992  */
1993 static void megasas_set_fw_assisted_qd(struct scsi_device *sdev,
1994                                                  bool is_target_prop)
1995 {
1996         u8 interface_type;
1997         u32 device_qd = MEGASAS_DEFAULT_CMD_PER_LUN;
1998         u32 tgt_device_qd;
1999         struct megasas_instance *instance;
2000         struct MR_PRIV_DEVICE *mr_device_priv_data;
2001
2002         instance = megasas_lookup_instance(sdev->host->host_no);
2003         mr_device_priv_data = sdev->hostdata;
2004         interface_type  = mr_device_priv_data->interface_type;
2005
2006         switch (interface_type) {
2007         case SAS_PD:
2008                 device_qd = MEGASAS_SAS_QD;
2009                 break;
2010         case SATA_PD:
2011                 device_qd = MEGASAS_SATA_QD;
2012                 break;
2013         case NVME_PD:
2014                 device_qd = MEGASAS_NVME_QD;
2015                 break;
2016         }
2017
2018         if (is_target_prop) {
2019                 tgt_device_qd = le32_to_cpu(instance->tgt_prop->device_qdepth);
2020                 if (tgt_device_qd)
2021                         device_qd = min(instance->host->can_queue,
2022                                         (int)tgt_device_qd);
2023         }
2024
2025         if (instance->enable_sdev_max_qd && interface_type != UNKNOWN_DRIVE)
2026                 device_qd = instance->host->can_queue;
2027
2028         scsi_change_queue_depth(sdev, device_qd);
2029 }
2030
2031 /*
2032  * megasas_set_static_target_properties -
2033  * Device property set by driver are static and it is not required to be
2034  * updated after OCR.
2035  *
2036  * set io timeout
2037  * set device queue depth
2038  * set nvme device properties. see - megasas_set_nvme_device_properties
2039  *
2040  * @sdev:                               scsi device
2041  * @is_target_prop                      true, if fw provided target properties.
2042  */
2043 static void megasas_set_static_target_properties(struct scsi_device *sdev,
2044                                                  bool is_target_prop)
2045 {
2046         u32 max_io_size_kb = MR_DEFAULT_NVME_MDTS_KB;
2047         struct megasas_instance *instance;
2048
2049         instance = megasas_lookup_instance(sdev->host->host_no);
2050
2051         /*
2052          * The RAID firmware may require extended timeouts.
2053          */
2054         blk_queue_rq_timeout(sdev->request_queue, scmd_timeout * HZ);
2055
2056         /* max_io_size_kb will be set to non zero for
2057          * nvme based vd and syspd.
2058          */
2059         if (is_target_prop)
2060                 max_io_size_kb = le32_to_cpu(instance->tgt_prop->max_io_size_kb);
2061
2062         if (instance->nvme_page_size && max_io_size_kb)
2063                 megasas_set_nvme_device_properties(sdev, (max_io_size_kb << 10));
2064
2065         megasas_set_fw_assisted_qd(sdev, is_target_prop);
2066 }
2067
2068
2069 static int megasas_slave_configure(struct scsi_device *sdev)
2070 {
2071         u16 pd_index = 0;
2072         struct megasas_instance *instance;
2073         int ret_target_prop = DCMD_FAILED;
2074         bool is_target_prop = false;
2075
2076         instance = megasas_lookup_instance(sdev->host->host_no);
2077         if (instance->pd_list_not_supported) {
2078                 if (!MEGASAS_IS_LOGICAL(sdev) && sdev->type == TYPE_DISK) {
2079                         pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
2080                                 sdev->id;
2081                         if (instance->pd_list[pd_index].driveState !=
2082                                 MR_PD_STATE_SYSTEM)
2083                                 return -ENXIO;
2084                 }
2085         }
2086
2087         mutex_lock(&instance->reset_mutex);
2088         /* Send DCMD to Firmware and cache the information */
2089         if ((instance->pd_info) && !MEGASAS_IS_LOGICAL(sdev))
2090                 megasas_get_pd_info(instance, sdev);
2091
2092         /* Some ventura firmware may not have instance->nvme_page_size set.
2093          * Do not send MR_DCMD_DRV_GET_TARGET_PROP
2094          */
2095         if ((instance->tgt_prop) && (instance->nvme_page_size))
2096                 ret_target_prop = megasas_get_target_prop(instance, sdev);
2097
2098         is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
2099         megasas_set_static_target_properties(sdev, is_target_prop);
2100
2101         /* This sdev property may change post OCR */
2102         megasas_set_dynamic_target_properties(sdev, is_target_prop);
2103
2104         mutex_unlock(&instance->reset_mutex);
2105
2106         return 0;
2107 }
2108
2109 static int megasas_slave_alloc(struct scsi_device *sdev)
2110 {
2111         u16 pd_index = 0, ld_tgt_id;
2112         struct megasas_instance *instance ;
2113         struct MR_PRIV_DEVICE *mr_device_priv_data;
2114
2115         instance = megasas_lookup_instance(sdev->host->host_no);
2116         if (!MEGASAS_IS_LOGICAL(sdev)) {
2117                 /*
2118                  * Open the OS scan to the SYSTEM PD
2119                  */
2120                 pd_index =
2121                         (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
2122                         sdev->id;
2123                 if ((instance->pd_list_not_supported ||
2124                         instance->pd_list[pd_index].driveState ==
2125                         MR_PD_STATE_SYSTEM)) {
2126                         goto scan_target;
2127                 }
2128                 return -ENXIO;
2129         } else if (!MEGASAS_IS_LUN_VALID(sdev)) {
2130                 sdev_printk(KERN_INFO, sdev, "%s: invalid LUN\n", __func__);
2131                 return -ENXIO;
2132         }
2133
2134 scan_target:
2135         mr_device_priv_data = kzalloc(sizeof(*mr_device_priv_data),
2136                                         GFP_KERNEL);
2137         if (!mr_device_priv_data)
2138                 return -ENOMEM;
2139
2140         if (MEGASAS_IS_LOGICAL(sdev)) {
2141                 ld_tgt_id = MEGASAS_TARGET_ID(sdev);
2142                 instance->ld_tgtid_status[ld_tgt_id] = LD_TARGET_ID_ACTIVE;
2143                 if (megasas_dbg_lvl & LD_PD_DEBUG)
2144                         sdev_printk(KERN_INFO, sdev, "LD target ID %d created.\n", ld_tgt_id);
2145         }
2146
2147         sdev->hostdata = mr_device_priv_data;
2148
2149         atomic_set(&mr_device_priv_data->r1_ldio_hint,
2150                    instance->r1_ldio_hint_default);
2151         return 0;
2152 }
2153
2154 static void megasas_slave_destroy(struct scsi_device *sdev)
2155 {
2156         u16 ld_tgt_id;
2157         struct megasas_instance *instance;
2158
2159         instance = megasas_lookup_instance(sdev->host->host_no);
2160
2161         if (MEGASAS_IS_LOGICAL(sdev)) {
2162                 if (!MEGASAS_IS_LUN_VALID(sdev)) {
2163                         sdev_printk(KERN_INFO, sdev, "%s: invalid LUN\n", __func__);
2164                         return;
2165                 }
2166                 ld_tgt_id = MEGASAS_TARGET_ID(sdev);
2167                 instance->ld_tgtid_status[ld_tgt_id] = LD_TARGET_ID_DELETED;
2168                 if (megasas_dbg_lvl & LD_PD_DEBUG)
2169                         sdev_printk(KERN_INFO, sdev,
2170                                     "LD target ID %d removed from OS stack\n", ld_tgt_id);
2171         }
2172
2173         kfree(sdev->hostdata);
2174         sdev->hostdata = NULL;
2175 }
2176
2177 /*
2178 * megasas_complete_outstanding_ioctls - Complete outstanding ioctls after a
2179 *                                       kill adapter
2180 * @instance:                            Adapter soft state
2181 *
2182 */
2183 static void megasas_complete_outstanding_ioctls(struct megasas_instance *instance)
2184 {
2185         int i;
2186         struct megasas_cmd *cmd_mfi;
2187         struct megasas_cmd_fusion *cmd_fusion;
2188         struct fusion_context *fusion = instance->ctrl_context;
2189
2190         /* Find all outstanding ioctls */
2191         if (fusion) {
2192                 for (i = 0; i < instance->max_fw_cmds; i++) {
2193                         cmd_fusion = fusion->cmd_list[i];
2194                         if (cmd_fusion->sync_cmd_idx != (u32)ULONG_MAX) {
2195                                 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
2196                                 if (cmd_mfi->sync_cmd &&
2197                                     (cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT)) {
2198                                         cmd_mfi->frame->hdr.cmd_status =
2199                                                         MFI_STAT_WRONG_STATE;
2200                                         megasas_complete_cmd(instance,
2201                                                              cmd_mfi, DID_OK);
2202                                 }
2203                         }
2204                 }
2205         } else {
2206                 for (i = 0; i < instance->max_fw_cmds; i++) {
2207                         cmd_mfi = instance->cmd_list[i];
2208                         if (cmd_mfi->sync_cmd && cmd_mfi->frame->hdr.cmd !=
2209                                 MFI_CMD_ABORT)
2210                                 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
2211                 }
2212         }
2213 }
2214
2215
2216 void megaraid_sas_kill_hba(struct megasas_instance *instance)
2217 {
2218         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2219                 dev_warn(&instance->pdev->dev,
2220                          "Adapter already dead, skipping kill HBA\n");
2221                 return;
2222         }
2223
2224         /* Set critical error to block I/O & ioctls in case caller didn't */
2225         atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2226         /* Wait 1 second to ensure IO or ioctls in build have posted */
2227         msleep(1000);
2228         if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2229                 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2230                 (instance->adapter_type != MFI_SERIES)) {
2231                 if (!instance->requestorId) {
2232                         writel(MFI_STOP_ADP, &instance->reg_set->doorbell);
2233                         /* Flush */
2234                         readl(&instance->reg_set->doorbell);
2235                 }
2236                 if (instance->requestorId && instance->peerIsPresent)
2237                         memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
2238         } else {
2239                 writel(MFI_STOP_ADP,
2240                         &instance->reg_set->inbound_doorbell);
2241         }
2242         /* Complete outstanding ioctls when adapter is killed */
2243         megasas_complete_outstanding_ioctls(instance);
2244 }
2245
2246  /**
2247   * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
2248   *                                     restored to max value
2249   * @instance:                  Adapter soft state
2250   *
2251   */
2252 void
2253 megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
2254 {
2255         unsigned long flags;
2256
2257         if (instance->flag & MEGASAS_FW_BUSY
2258             && time_after(jiffies, instance->last_time + 5 * HZ)
2259             && atomic_read(&instance->fw_outstanding) <
2260             instance->throttlequeuedepth + 1) {
2261
2262                 spin_lock_irqsave(instance->host->host_lock, flags);
2263                 instance->flag &= ~MEGASAS_FW_BUSY;
2264
2265                 instance->host->can_queue = instance->cur_can_queue;
2266                 spin_unlock_irqrestore(instance->host->host_lock, flags);
2267         }
2268 }
2269
2270 /**
2271  * megasas_complete_cmd_dpc      -      Returns FW's controller structure
2272  * @instance_addr:                      Address of adapter soft state
2273  *
2274  * Tasklet to complete cmds
2275  */
2276 static void megasas_complete_cmd_dpc(unsigned long instance_addr)
2277 {
2278         u32 producer;
2279         u32 consumer;
2280         u32 context;
2281         struct megasas_cmd *cmd;
2282         struct megasas_instance *instance =
2283                                 (struct megasas_instance *)instance_addr;
2284         unsigned long flags;
2285
2286         /* If we have already declared adapter dead, donot complete cmds */
2287         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
2288                 return;
2289
2290         spin_lock_irqsave(&instance->completion_lock, flags);
2291
2292         producer = le32_to_cpu(*instance->producer);
2293         consumer = le32_to_cpu(*instance->consumer);
2294
2295         while (consumer != producer) {
2296                 context = le32_to_cpu(instance->reply_queue[consumer]);
2297                 if (context >= instance->max_fw_cmds) {
2298                         dev_err(&instance->pdev->dev, "Unexpected context value %x\n",
2299                                 context);
2300                         BUG();
2301                 }
2302
2303                 cmd = instance->cmd_list[context];
2304
2305                 megasas_complete_cmd(instance, cmd, DID_OK);
2306
2307                 consumer++;
2308                 if (consumer == (instance->max_fw_cmds + 1)) {
2309                         consumer = 0;
2310                 }
2311         }
2312
2313         *instance->consumer = cpu_to_le32(producer);
2314
2315         spin_unlock_irqrestore(&instance->completion_lock, flags);
2316
2317         /*
2318          * Check if we can restore can_queue
2319          */
2320         megasas_check_and_restore_queue_depth(instance);
2321 }
2322
2323 static void megasas_sriov_heartbeat_handler(struct timer_list *t);
2324
2325 /**
2326  * megasas_start_timer - Initializes sriov heartbeat timer object
2327  * @instance:           Adapter soft state
2328  *
2329  */
2330 void megasas_start_timer(struct megasas_instance *instance)
2331 {
2332         struct timer_list *timer = &instance->sriov_heartbeat_timer;
2333
2334         timer_setup(timer, megasas_sriov_heartbeat_handler, 0);
2335         timer->expires = jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF;
2336         add_timer(timer);
2337 }
2338
2339 static void
2340 megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
2341
2342 static void
2343 process_fw_state_change_wq(struct work_struct *work);
2344
2345 static void megasas_do_ocr(struct megasas_instance *instance)
2346 {
2347         if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
2348         (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
2349         (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
2350                 *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
2351         }
2352         instance->instancet->disable_intr(instance);
2353         atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
2354         instance->issuepend_done = 0;
2355
2356         atomic_set(&instance->fw_outstanding, 0);
2357         megasas_internal_reset_defer_cmds(instance);
2358         process_fw_state_change_wq(&instance->work_init);
2359 }
2360
2361 static int megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance,
2362                                             int initial)
2363 {
2364         struct megasas_cmd *cmd;
2365         struct megasas_dcmd_frame *dcmd;
2366         struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL;
2367         dma_addr_t new_affiliation_111_h;
2368         int ld, retval = 0;
2369         u8 thisVf;
2370
2371         cmd = megasas_get_cmd(instance);
2372
2373         if (!cmd) {
2374                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation_111:"
2375                        "Failed to get cmd for scsi%d\n",
2376                         instance->host->host_no);
2377                 return -ENOMEM;
2378         }
2379
2380         dcmd = &cmd->frame->dcmd;
2381
2382         if (!instance->vf_affiliation_111) {
2383                 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2384                        "affiliation for scsi%d\n", instance->host->host_no);
2385                 megasas_return_cmd(instance, cmd);
2386                 return -ENOMEM;
2387         }
2388
2389         if (initial)
2390                         memset(instance->vf_affiliation_111, 0,
2391                                sizeof(struct MR_LD_VF_AFFILIATION_111));
2392         else {
2393                 new_affiliation_111 =
2394                         dma_alloc_coherent(&instance->pdev->dev,
2395                                            sizeof(struct MR_LD_VF_AFFILIATION_111),
2396                                            &new_affiliation_111_h, GFP_KERNEL);
2397                 if (!new_affiliation_111) {
2398                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2399                                "memory for new affiliation for scsi%d\n",
2400                                instance->host->host_no);
2401                         megasas_return_cmd(instance, cmd);
2402                         return -ENOMEM;
2403                 }
2404         }
2405
2406         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2407
2408         dcmd->cmd = MFI_CMD_DCMD;
2409         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2410         dcmd->sge_count = 1;
2411         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2412         dcmd->timeout = 0;
2413         dcmd->pad_0 = 0;
2414         dcmd->data_xfer_len =
2415                 cpu_to_le32(sizeof(struct MR_LD_VF_AFFILIATION_111));
2416         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111);
2417
2418         if (initial)
2419                 dcmd->sgl.sge32[0].phys_addr =
2420                         cpu_to_le32(instance->vf_affiliation_111_h);
2421         else
2422                 dcmd->sgl.sge32[0].phys_addr =
2423                         cpu_to_le32(new_affiliation_111_h);
2424
2425         dcmd->sgl.sge32[0].length = cpu_to_le32(
2426                 sizeof(struct MR_LD_VF_AFFILIATION_111));
2427
2428         dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2429                "scsi%d\n", instance->host->host_no);
2430
2431         if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2432                 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2433                        " failed with status 0x%x for scsi%d\n",
2434                        dcmd->cmd_status, instance->host->host_no);
2435                 retval = 1; /* Do a scan if we couldn't get affiliation */
2436                 goto out;
2437         }
2438
2439         if (!initial) {
2440                 thisVf = new_affiliation_111->thisVf;
2441                 for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++)
2442                         if (instance->vf_affiliation_111->map[ld].policy[thisVf] !=
2443                             new_affiliation_111->map[ld].policy[thisVf]) {
2444                                 dev_warn(&instance->pdev->dev, "SR-IOV: "
2445                                        "Got new LD/VF affiliation for scsi%d\n",
2446                                        instance->host->host_no);
2447                                 memcpy(instance->vf_affiliation_111,
2448                                        new_affiliation_111,
2449                                        sizeof(struct MR_LD_VF_AFFILIATION_111));
2450                                 retval = 1;
2451                                 goto out;
2452                         }
2453         }
2454 out:
2455         if (new_affiliation_111) {
2456                 dma_free_coherent(&instance->pdev->dev,
2457                                     sizeof(struct MR_LD_VF_AFFILIATION_111),
2458                                     new_affiliation_111,
2459                                     new_affiliation_111_h);
2460         }
2461
2462         megasas_return_cmd(instance, cmd);
2463
2464         return retval;
2465 }
2466
2467 static int megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance,
2468                                             int initial)
2469 {
2470         struct megasas_cmd *cmd;
2471         struct megasas_dcmd_frame *dcmd;
2472         struct MR_LD_VF_AFFILIATION *new_affiliation = NULL;
2473         struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL;
2474         dma_addr_t new_affiliation_h;
2475         int i, j, retval = 0, found = 0, doscan = 0;
2476         u8 thisVf;
2477
2478         cmd = megasas_get_cmd(instance);
2479
2480         if (!cmd) {
2481                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation12: "
2482                        "Failed to get cmd for scsi%d\n",
2483                        instance->host->host_no);
2484                 return -ENOMEM;
2485         }
2486
2487         dcmd = &cmd->frame->dcmd;
2488
2489         if (!instance->vf_affiliation) {
2490                 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2491                        "affiliation for scsi%d\n", instance->host->host_no);
2492                 megasas_return_cmd(instance, cmd);
2493                 return -ENOMEM;
2494         }
2495
2496         if (initial)
2497                 memset(instance->vf_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
2498                        sizeof(struct MR_LD_VF_AFFILIATION));
2499         else {
2500                 new_affiliation =
2501                         dma_alloc_coherent(&instance->pdev->dev,
2502                                            (MAX_LOGICAL_DRIVES + 1) * sizeof(struct MR_LD_VF_AFFILIATION),
2503                                            &new_affiliation_h, GFP_KERNEL);
2504                 if (!new_affiliation) {
2505                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2506                                "memory for new affiliation for scsi%d\n",
2507                                instance->host->host_no);
2508                         megasas_return_cmd(instance, cmd);
2509                         return -ENOMEM;
2510                 }
2511         }
2512
2513         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2514
2515         dcmd->cmd = MFI_CMD_DCMD;
2516         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2517         dcmd->sge_count = 1;
2518         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2519         dcmd->timeout = 0;
2520         dcmd->pad_0 = 0;
2521         dcmd->data_xfer_len = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2522                 sizeof(struct MR_LD_VF_AFFILIATION));
2523         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS);
2524
2525         if (initial)
2526                 dcmd->sgl.sge32[0].phys_addr =
2527                         cpu_to_le32(instance->vf_affiliation_h);
2528         else
2529                 dcmd->sgl.sge32[0].phys_addr =
2530                         cpu_to_le32(new_affiliation_h);
2531
2532         dcmd->sgl.sge32[0].length = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2533                 sizeof(struct MR_LD_VF_AFFILIATION));
2534
2535         dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2536                "scsi%d\n", instance->host->host_no);
2537
2538
2539         if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2540                 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2541                        " failed with status 0x%x for scsi%d\n",
2542                        dcmd->cmd_status, instance->host->host_no);
2543                 retval = 1; /* Do a scan if we couldn't get affiliation */
2544                 goto out;
2545         }
2546
2547         if (!initial) {
2548                 if (!new_affiliation->ldCount) {
2549                         dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2550                                "affiliation for passive path for scsi%d\n",
2551                                instance->host->host_no);
2552                         retval = 1;
2553                         goto out;
2554                 }
2555                 newmap = new_affiliation->map;
2556                 savedmap = instance->vf_affiliation->map;
2557                 thisVf = new_affiliation->thisVf;
2558                 for (i = 0 ; i < new_affiliation->ldCount; i++) {
2559                         found = 0;
2560                         for (j = 0; j < instance->vf_affiliation->ldCount;
2561                              j++) {
2562                                 if (newmap->ref.targetId ==
2563                                     savedmap->ref.targetId) {
2564                                         found = 1;
2565                                         if (newmap->policy[thisVf] !=
2566                                             savedmap->policy[thisVf]) {
2567                                                 doscan = 1;
2568                                                 goto out;
2569                                         }
2570                                 }
2571                                 savedmap = (struct MR_LD_VF_MAP *)
2572                                         ((unsigned char *)savedmap +
2573                                          savedmap->size);
2574                         }
2575                         if (!found && newmap->policy[thisVf] !=
2576                             MR_LD_ACCESS_HIDDEN) {
2577                                 doscan = 1;
2578                                 goto out;
2579                         }
2580                         newmap = (struct MR_LD_VF_MAP *)
2581                                 ((unsigned char *)newmap + newmap->size);
2582                 }
2583
2584                 newmap = new_affiliation->map;
2585                 savedmap = instance->vf_affiliation->map;
2586
2587                 for (i = 0 ; i < instance->vf_affiliation->ldCount; i++) {
2588                         found = 0;
2589                         for (j = 0 ; j < new_affiliation->ldCount; j++) {
2590                                 if (savedmap->ref.targetId ==
2591                                     newmap->ref.targetId) {
2592                                         found = 1;
2593                                         if (savedmap->policy[thisVf] !=
2594                                             newmap->policy[thisVf]) {
2595                                                 doscan = 1;
2596                                                 goto out;
2597                                         }
2598                                 }
2599                                 newmap = (struct MR_LD_VF_MAP *)
2600                                         ((unsigned char *)newmap +
2601                                          newmap->size);
2602                         }
2603                         if (!found && savedmap->policy[thisVf] !=
2604                             MR_LD_ACCESS_HIDDEN) {
2605                                 doscan = 1;
2606                                 goto out;
2607                         }
2608                         savedmap = (struct MR_LD_VF_MAP *)
2609                                 ((unsigned char *)savedmap +
2610                                  savedmap->size);
2611                 }
2612         }
2613 out:
2614         if (doscan) {
2615                 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2616                        "affiliation for scsi%d\n", instance->host->host_no);
2617                 memcpy(instance->vf_affiliation, new_affiliation,
2618                        new_affiliation->size);
2619                 retval = 1;
2620         }
2621
2622         if (new_affiliation)
2623                 dma_free_coherent(&instance->pdev->dev,
2624                                     (MAX_LOGICAL_DRIVES + 1) *
2625                                     sizeof(struct MR_LD_VF_AFFILIATION),
2626                                     new_affiliation, new_affiliation_h);
2627         megasas_return_cmd(instance, cmd);
2628
2629         return retval;
2630 }
2631
2632 /* This function will get the current SR-IOV LD/VF affiliation */
2633 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
2634         int initial)
2635 {
2636         int retval;
2637
2638         if (instance->PlasmaFW111)
2639                 retval = megasas_get_ld_vf_affiliation_111(instance, initial);
2640         else
2641                 retval = megasas_get_ld_vf_affiliation_12(instance, initial);
2642         return retval;
2643 }
2644
2645 /* This function will tell FW to start the SR-IOV heartbeat */
2646 int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
2647                                          int initial)
2648 {
2649         struct megasas_cmd *cmd;
2650         struct megasas_dcmd_frame *dcmd;
2651         int retval = 0;
2652
2653         cmd = megasas_get_cmd(instance);
2654
2655         if (!cmd) {
2656                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_sriov_start_heartbeat: "
2657                        "Failed to get cmd for scsi%d\n",
2658                        instance->host->host_no);
2659                 return -ENOMEM;
2660         }
2661
2662         dcmd = &cmd->frame->dcmd;
2663
2664         if (initial) {
2665                 instance->hb_host_mem =
2666                         dma_alloc_coherent(&instance->pdev->dev,
2667                                            sizeof(struct MR_CTRL_HB_HOST_MEM),
2668                                            &instance->hb_host_mem_h,
2669                                            GFP_KERNEL);
2670                 if (!instance->hb_host_mem) {
2671                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate"
2672                                " memory for heartbeat host memory for scsi%d\n",
2673                                instance->host->host_no);
2674                         retval = -ENOMEM;
2675                         goto out;
2676                 }
2677         }
2678
2679         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2680
2681         dcmd->mbox.s[0] = cpu_to_le16(sizeof(struct MR_CTRL_HB_HOST_MEM));
2682         dcmd->cmd = MFI_CMD_DCMD;
2683         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2684         dcmd->sge_count = 1;
2685         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2686         dcmd->timeout = 0;
2687         dcmd->pad_0 = 0;
2688         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM));
2689         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC);
2690
2691         megasas_set_dma_settings(instance, dcmd, instance->hb_host_mem_h,
2692                                  sizeof(struct MR_CTRL_HB_HOST_MEM));
2693
2694         dev_warn(&instance->pdev->dev, "SR-IOV: Starting heartbeat for scsi%d\n",
2695                instance->host->host_no);
2696
2697         if ((instance->adapter_type != MFI_SERIES) &&
2698             !instance->mask_interrupts)
2699                 retval = megasas_issue_blocked_cmd(instance, cmd,
2700                         MEGASAS_ROUTINE_WAIT_TIME_VF);
2701         else
2702                 retval = megasas_issue_polled(instance, cmd);
2703
2704         if (retval) {
2705                 dev_warn(&instance->pdev->dev, "SR-IOV: MR_DCMD_CTRL_SHARED_HOST"
2706                         "_MEM_ALLOC DCMD %s for scsi%d\n",
2707                         (dcmd->cmd_status == MFI_STAT_INVALID_STATUS) ?
2708                         "timed out" : "failed", instance->host->host_no);
2709                 retval = 1;
2710         }
2711
2712 out:
2713         megasas_return_cmd(instance, cmd);
2714
2715         return retval;
2716 }
2717
2718 /* Handler for SR-IOV heartbeat */
2719 static void megasas_sriov_heartbeat_handler(struct timer_list *t)
2720 {
2721         struct megasas_instance *instance =
2722                 from_timer(instance, t, sriov_heartbeat_timer);
2723
2724         if (instance->hb_host_mem->HB.fwCounter !=
2725             instance->hb_host_mem->HB.driverCounter) {
2726                 instance->hb_host_mem->HB.driverCounter =
2727                         instance->hb_host_mem->HB.fwCounter;
2728                 mod_timer(&instance->sriov_heartbeat_timer,
2729                           jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
2730         } else {
2731                 dev_warn(&instance->pdev->dev, "SR-IOV: Heartbeat never "
2732                        "completed for scsi%d\n", instance->host->host_no);
2733                 schedule_work(&instance->work_init);
2734         }
2735 }
2736
2737 /**
2738  * megasas_wait_for_outstanding -       Wait for all outstanding cmds
2739  * @instance:                           Adapter soft state
2740  *
2741  * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to
2742  * complete all its outstanding commands. Returns error if one or more IOs
2743  * are pending after this time period. It also marks the controller dead.
2744  */
2745 static int megasas_wait_for_outstanding(struct megasas_instance *instance)
2746 {
2747         int i, sl, outstanding;
2748         u32 reset_index;
2749         u32 wait_time = MEGASAS_RESET_WAIT_TIME;
2750         unsigned long flags;
2751         struct list_head clist_local;
2752         struct megasas_cmd *reset_cmd;
2753         u32 fw_state;
2754
2755         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2756                 dev_info(&instance->pdev->dev, "%s:%d HBA is killed.\n",
2757                 __func__, __LINE__);
2758                 return FAILED;
2759         }
2760
2761         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2762
2763                 INIT_LIST_HEAD(&clist_local);
2764                 spin_lock_irqsave(&instance->hba_lock, flags);
2765                 list_splice_init(&instance->internal_reset_pending_q,
2766                                 &clist_local);
2767                 spin_unlock_irqrestore(&instance->hba_lock, flags);
2768
2769                 dev_notice(&instance->pdev->dev, "HBA reset wait ...\n");
2770                 for (i = 0; i < wait_time; i++) {
2771                         msleep(1000);
2772                         if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL)
2773                                 break;
2774                 }
2775
2776                 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2777                         dev_notice(&instance->pdev->dev, "reset: Stopping HBA.\n");
2778                         atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2779                         return FAILED;
2780                 }
2781
2782                 reset_index = 0;
2783                 while (!list_empty(&clist_local)) {
2784                         reset_cmd = list_entry((&clist_local)->next,
2785                                                 struct megasas_cmd, list);
2786                         list_del_init(&reset_cmd->list);
2787                         if (reset_cmd->scmd) {
2788                                 reset_cmd->scmd->result = DID_REQUEUE << 16;
2789                                 dev_notice(&instance->pdev->dev, "%d:%p reset [%02x]\n",
2790                                         reset_index, reset_cmd,
2791                                         reset_cmd->scmd->cmnd[0]);
2792
2793                                 reset_cmd->scmd->scsi_done(reset_cmd->scmd);
2794                                 megasas_return_cmd(instance, reset_cmd);
2795                         } else if (reset_cmd->sync_cmd) {
2796                                 dev_notice(&instance->pdev->dev, "%p synch cmds"
2797                                                 "reset queue\n",
2798                                                 reset_cmd);
2799
2800                                 reset_cmd->cmd_status_drv = DCMD_INIT;
2801                                 instance->instancet->fire_cmd(instance,
2802                                                 reset_cmd->frame_phys_addr,
2803                                                 0, instance->reg_set);
2804                         } else {
2805                                 dev_notice(&instance->pdev->dev, "%p unexpected"
2806                                         "cmds lst\n",
2807                                         reset_cmd);
2808                         }
2809                         reset_index++;
2810                 }
2811
2812                 return SUCCESS;
2813         }
2814
2815         for (i = 0; i < resetwaittime; i++) {
2816                 outstanding = atomic_read(&instance->fw_outstanding);
2817
2818                 if (!outstanding)
2819                         break;
2820
2821                 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2822                         dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
2823                                "commands to complete\n",i,outstanding);
2824                         /*
2825                          * Call cmd completion routine. Cmd to be
2826                          * be completed directly without depending on isr.
2827                          */
2828                         megasas_complete_cmd_dpc((unsigned long)instance);
2829                 }
2830
2831                 msleep(1000);
2832         }
2833
2834         i = 0;
2835         outstanding = atomic_read(&instance->fw_outstanding);
2836         fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK;
2837
2838         if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2839                 goto no_outstanding;
2840
2841         if (instance->disableOnlineCtrlReset)
2842                 goto kill_hba_and_failed;
2843         do {
2844                 if ((fw_state == MFI_STATE_FAULT) || atomic_read(&instance->fw_outstanding)) {
2845                         dev_info(&instance->pdev->dev,
2846                                 "%s:%d waiting_for_outstanding: before issue OCR. FW state = 0x%x, outstanding 0x%x\n",
2847                                 __func__, __LINE__, fw_state, atomic_read(&instance->fw_outstanding));
2848                         if (i == 3)
2849                                 goto kill_hba_and_failed;
2850                         megasas_do_ocr(instance);
2851
2852                         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2853                                 dev_info(&instance->pdev->dev, "%s:%d OCR failed and HBA is killed.\n",
2854                                 __func__, __LINE__);
2855                                 return FAILED;
2856                         }
2857                         dev_info(&instance->pdev->dev, "%s:%d waiting_for_outstanding: after issue OCR.\n",
2858                                 __func__, __LINE__);
2859
2860                         for (sl = 0; sl < 10; sl++)
2861                                 msleep(500);
2862
2863                         outstanding = atomic_read(&instance->fw_outstanding);
2864
2865                         fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK;
2866                         if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2867                                 goto no_outstanding;
2868                 }
2869                 i++;
2870         } while (i <= 3);
2871
2872 no_outstanding:
2873
2874         dev_info(&instance->pdev->dev, "%s:%d no more pending commands remain after reset handling.\n",
2875                 __func__, __LINE__);
2876         return SUCCESS;
2877
2878 kill_hba_and_failed:
2879
2880         /* Reset not supported, kill adapter */
2881         dev_info(&instance->pdev->dev, "%s:%d killing adapter scsi%d"
2882                 " disableOnlineCtrlReset %d fw_outstanding %d \n",
2883                 __func__, __LINE__, instance->host->host_no, instance->disableOnlineCtrlReset,
2884                 atomic_read(&instance->fw_outstanding));
2885         megasas_dump_pending_frames(instance);
2886         megaraid_sas_kill_hba(instance);
2887
2888         return FAILED;
2889 }
2890
2891 /**
2892  * megasas_generic_reset -      Generic reset routine
2893  * @scmd:                       Mid-layer SCSI command
2894  *
2895  * This routine implements a generic reset handler for device, bus and host
2896  * reset requests. Device, bus and host specific reset handlers can use this
2897  * function after they do their specific tasks.
2898  */
2899 static int megasas_generic_reset(struct scsi_cmnd *scmd)
2900 {
2901         int ret_val;
2902         struct megasas_instance *instance;
2903
2904         instance = (struct megasas_instance *)scmd->device->host->hostdata;
2905
2906         scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n",
2907                  scmd->cmnd[0], scmd->retries);
2908
2909         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2910                 dev_err(&instance->pdev->dev, "cannot recover from previous reset failures\n");
2911                 return FAILED;
2912         }
2913
2914         ret_val = megasas_wait_for_outstanding(instance);
2915         if (ret_val == SUCCESS)
2916                 dev_notice(&instance->pdev->dev, "reset successful\n");
2917         else
2918                 dev_err(&instance->pdev->dev, "failed to do reset\n");
2919
2920         return ret_val;
2921 }
2922
2923 /**
2924  * megasas_reset_timer - quiesce the adapter if required
2925  * @scmd:               scsi cmnd
2926  *
2927  * Sets the FW busy flag and reduces the host->can_queue if the
2928  * cmd has not been completed within the timeout period.
2929  */
2930 static enum
2931 blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
2932 {
2933         struct megasas_instance *instance;
2934         unsigned long flags;
2935
2936         if (time_after(jiffies, scmd->jiffies_at_alloc +
2937                                 (scmd_timeout * 2) * HZ)) {
2938                 return BLK_EH_DONE;
2939         }
2940
2941         instance = (struct megasas_instance *)scmd->device->host->hostdata;
2942         if (!(instance->flag & MEGASAS_FW_BUSY)) {
2943                 /* FW is busy, throttle IO */
2944                 spin_lock_irqsave(instance->host->host_lock, flags);
2945
2946                 instance->host->can_queue = instance->throttlequeuedepth;
2947                 instance->last_time = jiffies;
2948                 instance->flag |= MEGASAS_FW_BUSY;
2949
2950                 spin_unlock_irqrestore(instance->host->host_lock, flags);
2951         }
2952         return BLK_EH_RESET_TIMER;
2953 }
2954
2955 /**
2956  * megasas_dump -       This function will print hexdump of provided buffer.
2957  * @buf:                Buffer to be dumped
2958  * @sz:         Size in bytes
2959  * @format:             Different formats of dumping e.g. format=n will
2960  *                      cause only 'n' 32 bit words to be dumped in a single
2961  *                      line.
2962  */
2963 inline void
2964 megasas_dump(void *buf, int sz, int format)
2965 {
2966         int i;
2967         __le32 *buf_loc = (__le32 *)buf;
2968
2969         for (i = 0; i < (sz / sizeof(__le32)); i++) {
2970                 if ((i % format) == 0) {
2971                         if (i != 0)
2972                                 printk(KERN_CONT "\n");
2973                         printk(KERN_CONT "%08x: ", (i * 4));
2974                 }
2975                 printk(KERN_CONT "%08x ", le32_to_cpu(buf_loc[i]));
2976         }
2977         printk(KERN_CONT "\n");
2978 }
2979
2980 /**
2981  * megasas_dump_reg_set -       This function will print hexdump of register set
2982  * @reg_set:    Register set to be dumped
2983  */
2984 inline void
2985 megasas_dump_reg_set(void __iomem *reg_set)
2986 {
2987         unsigned int i, sz = 256;
2988         u32 __iomem *reg = (u32 __iomem *)reg_set;
2989
2990         for (i = 0; i < (sz / sizeof(u32)); i++)
2991                 printk("%08x: %08x\n", (i * 4), readl(&reg[i]));
2992 }
2993
2994 /**
2995  * megasas_dump_fusion_io -     This function will print key details
2996  *                              of SCSI IO
2997  * @scmd:                       SCSI command pointer of SCSI IO
2998  */
2999 void
3000 megasas_dump_fusion_io(struct scsi_cmnd *scmd)
3001 {
3002         struct megasas_cmd_fusion *cmd;
3003         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
3004         struct megasas_instance *instance;
3005
3006         cmd = (struct megasas_cmd_fusion *)scmd->SCp.ptr;
3007         instance = (struct megasas_instance *)scmd->device->host->hostdata;
3008
3009         scmd_printk(KERN_INFO, scmd,
3010                     "scmd: (0x%p)  retries: 0x%x  allowed: 0x%x\n",
3011                     scmd, scmd->retries, scmd->allowed);
3012         scsi_print_command(scmd);
3013
3014         if (cmd) {
3015                 req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc;
3016                 scmd_printk(KERN_INFO, scmd, "Request descriptor details:\n");
3017                 scmd_printk(KERN_INFO, scmd,
3018                             "RequestFlags:0x%x  MSIxIndex:0x%x  SMID:0x%x  LMID:0x%x  DevHandle:0x%x\n",
3019                             req_desc->SCSIIO.RequestFlags,
3020                             req_desc->SCSIIO.MSIxIndex, req_desc->SCSIIO.SMID,
3021                             req_desc->SCSIIO.LMID, req_desc->SCSIIO.DevHandle);
3022
3023                 printk(KERN_INFO "IO request frame:\n");
3024                 megasas_dump(cmd->io_request,
3025                              MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE, 8);
3026                 printk(KERN_INFO "Chain frame:\n");
3027                 megasas_dump(cmd->sg_frame,
3028                              instance->max_chain_frame_sz, 8);
3029         }
3030
3031 }
3032
3033 /*
3034  * megasas_dump_sys_regs - This function will dump system registers through
3035  *                          sysfs.
3036  * @reg_set:                Pointer to System register set.
3037  * @buf:                    Buffer to which output is to be written.
3038  * @return:                 Number of bytes written to buffer.
3039  */
3040 static inline ssize_t
3041 megasas_dump_sys_regs(void __iomem *reg_set, char *buf)
3042 {
3043         unsigned int i, sz = 256;
3044         int bytes_wrote = 0;
3045         char *loc = (char *)buf;
3046         u32 __iomem *reg = (u32 __iomem *)reg_set;
3047
3048         for (i = 0; i < sz / sizeof(u32); i++) {
3049                 bytes_wrote += scnprintf(loc + bytes_wrote,
3050                                          PAGE_SIZE - bytes_wrote,
3051                                          "%08x: %08x\n", (i * 4),
3052                                          readl(&reg[i]));
3053         }
3054         return bytes_wrote;
3055 }
3056
3057 /**
3058  * megasas_reset_bus_host -     Bus & host reset handler entry point
3059  * @scmd:                       Mid-layer SCSI command
3060  */
3061 static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
3062 {
3063         int ret;
3064         struct megasas_instance *instance;
3065
3066         instance = (struct megasas_instance *)scmd->device->host->hostdata;
3067
3068         scmd_printk(KERN_INFO, scmd,
3069                 "OCR is requested due to IO timeout!!\n");
3070
3071         scmd_printk(KERN_INFO, scmd,
3072                 "SCSI host state: %d  SCSI host busy: %d  FW outstanding: %d\n",
3073                 scmd->device->host->shost_state,
3074                 scsi_host_busy(scmd->device->host),
3075                 atomic_read(&instance->fw_outstanding));
3076         /*
3077          * First wait for all commands to complete
3078          */
3079         if (instance->adapter_type == MFI_SERIES) {
3080                 ret = megasas_generic_reset(scmd);
3081         } else {
3082                 megasas_dump_fusion_io(scmd);
3083                 ret = megasas_reset_fusion(scmd->device->host,
3084                                 SCSIIO_TIMEOUT_OCR);
3085         }
3086
3087         return ret;
3088 }
3089
3090 /**
3091  * megasas_task_abort - Issues task abort request to firmware
3092  *                      (supported only for fusion adapters)
3093  * @scmd:               SCSI command pointer
3094  */
3095 static int megasas_task_abort(struct scsi_cmnd *scmd)
3096 {
3097         int ret;
3098         struct megasas_instance *instance;
3099
3100         instance = (struct megasas_instance *)scmd->device->host->hostdata;
3101
3102         if (instance->adapter_type != MFI_SERIES)
3103                 ret = megasas_task_abort_fusion(scmd);
3104         else {
3105                 sdev_printk(KERN_NOTICE, scmd->device, "TASK ABORT not supported\n");
3106                 ret = FAILED;
3107         }
3108
3109         return ret;
3110 }
3111
3112 /**
3113  * megasas_reset_target:  Issues target reset request to firmware
3114  *                        (supported only for fusion adapters)
3115  * @scmd:                 SCSI command pointer
3116  */
3117 static int megasas_reset_target(struct scsi_cmnd *scmd)
3118 {
3119         int ret;
3120         struct megasas_instance *instance;
3121
3122         instance = (struct megasas_instance *)scmd->device->host->hostdata;
3123
3124         if (instance->adapter_type != MFI_SERIES)
3125                 ret = megasas_reset_target_fusion(scmd);
3126         else {
3127                 sdev_printk(KERN_NOTICE, scmd->device, "TARGET RESET not supported\n");
3128                 ret = FAILED;
3129         }
3130
3131         return ret;
3132 }
3133
3134 /**
3135  * megasas_bios_param - Returns disk geometry for a disk
3136  * @sdev:               device handle
3137  * @bdev:               block device
3138  * @capacity:           drive capacity
3139  * @geom:               geometry parameters
3140  */
3141 static int
3142 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
3143                  sector_t capacity, int geom[])
3144 {
3145         int heads;
3146         int sectors;
3147         sector_t cylinders;
3148         unsigned long tmp;
3149
3150         /* Default heads (64) & sectors (32) */
3151         heads = 64;
3152         sectors = 32;
3153
3154         tmp = heads * sectors;
3155         cylinders = capacity;
3156
3157         sector_div(cylinders, tmp);
3158
3159         /*
3160          * Handle extended translation size for logical drives > 1Gb
3161          */
3162
3163         if (capacity >= 0x200000) {
3164                 heads = 255;
3165                 sectors = 63;
3166                 tmp = heads*sectors;
3167                 cylinders = capacity;
3168                 sector_div(cylinders, tmp);
3169         }
3170
3171         geom[0] = heads;
3172         geom[1] = sectors;
3173         geom[2] = cylinders;
3174
3175         return 0;
3176 }
3177
3178 static int megasas_map_queues(struct Scsi_Host *shost)
3179 {
3180         struct megasas_instance *instance;
3181         int qoff = 0, offset;
3182         struct blk_mq_queue_map *map;
3183
3184         instance = (struct megasas_instance *)shost->hostdata;
3185
3186         if (shost->nr_hw_queues == 1)
3187                 return 0;
3188
3189         offset = instance->low_latency_index_start;
3190
3191         /* Setup Default hctx */
3192         map = &shost->tag_set.map[HCTX_TYPE_DEFAULT];
3193         map->nr_queues = instance->msix_vectors - offset;
3194         map->queue_offset = 0;
3195         blk_mq_pci_map_queues(map, instance->pdev, offset);
3196         qoff += map->nr_queues;
3197         offset += map->nr_queues;
3198
3199         /* Setup Poll hctx */
3200         map = &shost->tag_set.map[HCTX_TYPE_POLL];
3201         map->nr_queues = instance->iopoll_q_count;
3202         if (map->nr_queues) {
3203                 /*
3204                  * The poll queue(s) doesn't have an IRQ (and hence IRQ
3205                  * affinity), so use the regular blk-mq cpu mapping
3206                  */
3207                 map->queue_offset = qoff;
3208                 blk_mq_map_queues(map);
3209         }
3210
3211         return 0;
3212 }
3213
3214 static void megasas_aen_polling(struct work_struct *work);
3215
3216 /**
3217  * megasas_service_aen -        Processes an event notification
3218  * @instance:                   Adapter soft state
3219  * @cmd:                        AEN command completed by the ISR
3220  *
3221  * For AEN, driver sends a command down to FW that is held by the FW till an
3222  * event occurs. When an event of interest occurs, FW completes the command
3223  * that it was previously holding.
3224  *
3225  * This routines sends SIGIO signal to processes that have registered with the
3226  * driver for AEN.
3227  */
3228 static void
3229 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
3230 {
3231         unsigned long flags;
3232
3233         /*
3234          * Don't signal app if it is just an aborted previously registered aen
3235          */
3236         if ((!cmd->abort_aen) && (instance->unload == 0)) {
3237                 spin_lock_irqsave(&poll_aen_lock, flags);
3238                 megasas_poll_wait_aen = 1;
3239                 spin_unlock_irqrestore(&poll_aen_lock, flags);
3240                 wake_up(&megasas_poll_wait);
3241                 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
3242         }
3243         else
3244                 cmd->abort_aen = 0;
3245
3246         instance->aen_cmd = NULL;
3247
3248         megasas_return_cmd(instance, cmd);
3249
3250         if ((instance->unload == 0) &&
3251                 ((instance->issuepend_done == 1))) {
3252                 struct megasas_aen_event *ev;
3253
3254                 ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
3255                 if (!ev) {
3256                         dev_err(&instance->pdev->dev, "megasas_service_aen: out of memory\n");
3257                 } else {
3258                         ev->instance = instance;
3259                         instance->ev = ev;
3260                         INIT_DELAYED_WORK(&ev->hotplug_work,
3261                                           megasas_aen_polling);
3262                         schedule_delayed_work(&ev->hotplug_work, 0);
3263                 }
3264         }
3265 }
3266
3267 static ssize_t
3268 fw_crash_buffer_store(struct device *cdev,
3269         struct device_attribute *attr, const char *buf, size_t count)
3270 {
3271         struct Scsi_Host *shost = class_to_shost(cdev);
3272         struct megasas_instance *instance =
3273                 (struct megasas_instance *) shost->hostdata;
3274         int val = 0;
3275         unsigned long flags;
3276
3277         if (kstrtoint(buf, 0, &val) != 0)
3278                 return -EINVAL;
3279
3280         spin_lock_irqsave(&instance->crashdump_lock, flags);
3281         instance->fw_crash_buffer_offset = val;
3282         spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3283         return strlen(buf);
3284 }
3285
3286 static ssize_t
3287 fw_crash_buffer_show(struct device *cdev,
3288         struct device_attribute *attr, char *buf)
3289 {
3290         struct Scsi_Host *shost = class_to_shost(cdev);
3291         struct megasas_instance *instance =
3292                 (struct megasas_instance *) shost->hostdata;
3293         u32 size;
3294         unsigned long dmachunk = CRASH_DMA_BUF_SIZE;
3295         unsigned long chunk_left_bytes;
3296         unsigned long src_addr;
3297         unsigned long flags;
3298         u32 buff_offset;
3299
3300         spin_lock_irqsave(&instance->crashdump_lock, flags);
3301         buff_offset = instance->fw_crash_buffer_offset;
3302         if (!instance->crash_dump_buf &&
3303                 !((instance->fw_crash_state == AVAILABLE) ||
3304                 (instance->fw_crash_state == COPYING))) {
3305                 dev_err(&instance->pdev->dev,
3306                         "Firmware crash dump is not available\n");
3307                 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3308                 return -EINVAL;
3309         }
3310
3311         if (buff_offset > (instance->fw_crash_buffer_size * dmachunk)) {
3312                 dev_err(&instance->pdev->dev,
3313                         "Firmware crash dump offset is out of range\n");
3314                 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3315                 return 0;
3316         }
3317
3318         size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset;
3319         chunk_left_bytes = dmachunk - (buff_offset % dmachunk);
3320         size = (size > chunk_left_bytes) ? chunk_left_bytes : size;
3321         size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size;
3322
3323         src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] +
3324                 (buff_offset % dmachunk);
3325         memcpy(buf, (void *)src_addr, size);
3326         spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3327
3328         return size;
3329 }
3330
3331 static ssize_t
3332 fw_crash_buffer_size_show(struct device *cdev,
3333         struct device_attribute *attr, char *buf)
3334 {
3335         struct Scsi_Host *shost = class_to_shost(cdev);
3336         struct megasas_instance *instance =
3337                 (struct megasas_instance *) shost->hostdata;
3338
3339         return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)
3340                 ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE);
3341 }
3342
3343 static ssize_t
3344 fw_crash_state_store(struct device *cdev,
3345         struct device_attribute *attr, const char *buf, size_t count)
3346 {
3347         struct Scsi_Host *shost = class_to_shost(cdev);
3348         struct megasas_instance *instance =
3349                 (struct megasas_instance *) shost->hostdata;
3350         int val = 0;
3351         unsigned long flags;
3352
3353         if (kstrtoint(buf, 0, &val) != 0)
3354                 return -EINVAL;
3355
3356         if ((val <= AVAILABLE || val > COPY_ERROR)) {
3357                 dev_err(&instance->pdev->dev, "application updates invalid "
3358                         "firmware crash state\n");
3359                 return -EINVAL;
3360         }
3361
3362         instance->fw_crash_state = val;
3363
3364         if ((val == COPIED) || (val == COPY_ERROR)) {
3365                 spin_lock_irqsave(&instance->crashdump_lock, flags);
3366                 megasas_free_host_crash_buffer(instance);
3367                 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3368                 if (val == COPY_ERROR)
3369                         dev_info(&instance->pdev->dev, "application failed to "
3370                                 "copy Firmware crash dump\n");
3371                 else
3372                         dev_info(&instance->pdev->dev, "Firmware crash dump "
3373                                 "copied successfully\n");
3374         }
3375         return strlen(buf);
3376 }
3377
3378 static ssize_t
3379 fw_crash_state_show(struct device *cdev,
3380         struct device_attribute *attr, char *buf)
3381 {
3382         struct Scsi_Host *shost = class_to_shost(cdev);
3383         struct megasas_instance *instance =
3384                 (struct megasas_instance *) shost->hostdata;
3385
3386         return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state);
3387 }
3388
3389 static ssize_t
3390 page_size_show(struct device *cdev,
3391         struct device_attribute *attr, char *buf)
3392 {
3393         return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1);
3394 }
3395
3396 static ssize_t
3397 ldio_outstanding_show(struct device *cdev, struct device_attribute *attr,
3398         char *buf)
3399 {
3400         struct Scsi_Host *shost = class_to_shost(cdev);
3401         struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3402
3403         return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->ldio_outstanding));
3404 }
3405
3406 static ssize_t
3407 fw_cmds_outstanding_show(struct device *cdev,
3408                                  struct device_attribute *attr, char *buf)
3409 {
3410         struct Scsi_Host *shost = class_to_shost(cdev);
3411         struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3412
3413         return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->fw_outstanding));
3414 }
3415
3416 static ssize_t
3417 enable_sdev_max_qd_show(struct device *cdev,
3418         struct device_attribute *attr, char *buf)
3419 {
3420         struct Scsi_Host *shost = class_to_shost(cdev);
3421         struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3422
3423         return snprintf(buf, PAGE_SIZE, "%d\n", instance->enable_sdev_max_qd);
3424 }
3425
3426 static ssize_t
3427 enable_sdev_max_qd_store(struct device *cdev,
3428         struct device_attribute *attr, const char *buf, size_t count)
3429 {
3430         struct Scsi_Host *shost = class_to_shost(cdev);
3431         struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3432         u32 val = 0;
3433         bool is_target_prop;
3434         int ret_target_prop = DCMD_FAILED;
3435         struct scsi_device *sdev;
3436
3437         if (kstrtou32(buf, 0, &val) != 0) {
3438                 pr_err("megasas: could not set enable_sdev_max_qd\n");
3439                 return -EINVAL;
3440         }
3441
3442         mutex_lock(&instance->reset_mutex);
3443         if (val)
3444                 instance->enable_sdev_max_qd = true;
3445         else
3446                 instance->enable_sdev_max_qd = false;
3447
3448         shost_for_each_device(sdev, shost) {
3449                 ret_target_prop = megasas_get_target_prop(instance, sdev);
3450                 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
3451                 megasas_set_fw_assisted_qd(sdev, is_target_prop);
3452         }
3453         mutex_unlock(&instance->reset_mutex);
3454
3455         return strlen(buf);
3456 }
3457
3458 static ssize_t
3459 dump_system_regs_show(struct device *cdev,
3460                                struct device_attribute *attr, char *buf)
3461 {
3462         struct Scsi_Host *shost = class_to_shost(cdev);
3463         struct megasas_instance *instance =
3464                         (struct megasas_instance *)shost->hostdata;
3465
3466         return megasas_dump_sys_regs(instance->reg_set, buf);
3467 }
3468
3469 static ssize_t
3470 raid_map_id_show(struct device *cdev, struct device_attribute *attr,
3471                           char *buf)
3472 {
3473         struct Scsi_Host *shost = class_to_shost(cdev);
3474         struct megasas_instance *instance =
3475                         (struct megasas_instance *)shost->hostdata;
3476
3477         return snprintf(buf, PAGE_SIZE, "%ld\n",
3478                         (unsigned long)instance->map_id);
3479 }
3480
3481 static DEVICE_ATTR_RW(fw_crash_buffer);
3482 static DEVICE_ATTR_RO(fw_crash_buffer_size);
3483 static DEVICE_ATTR_RW(fw_crash_state);
3484 static DEVICE_ATTR_RO(page_size);
3485 static DEVICE_ATTR_RO(ldio_outstanding);
3486 static DEVICE_ATTR_RO(fw_cmds_outstanding);
3487 static DEVICE_ATTR_RW(enable_sdev_max_qd);
3488 static DEVICE_ATTR_RO(dump_system_regs);
3489 static DEVICE_ATTR_RO(raid_map_id);
3490
3491 static struct device_attribute *megaraid_host_attrs[] = {
3492         &dev_attr_fw_crash_buffer_size,
3493         &dev_attr_fw_crash_buffer,
3494         &dev_attr_fw_crash_state,
3495         &dev_attr_page_size,
3496         &dev_attr_ldio_outstanding,
3497         &dev_attr_fw_cmds_outstanding,
3498         &dev_attr_enable_sdev_max_qd,
3499         &dev_attr_dump_system_regs,
3500         &dev_attr_raid_map_id,
3501         NULL,
3502 };
3503
3504 /*
3505  * Scsi host template for megaraid_sas driver
3506  */
3507 static struct scsi_host_template megasas_template = {
3508
3509         .module = THIS_MODULE,
3510         .name = "Avago SAS based MegaRAID driver",
3511         .proc_name = "megaraid_sas",
3512         .slave_configure = megasas_slave_configure,
3513         .slave_alloc = megasas_slave_alloc,
3514         .slave_destroy = megasas_slave_destroy,
3515         .queuecommand = megasas_queue_command,
3516         .eh_target_reset_handler = megasas_reset_target,
3517         .eh_abort_handler = megasas_task_abort,
3518         .eh_host_reset_handler = megasas_reset_bus_host,
3519         .eh_timed_out = megasas_reset_timer,
3520         .shost_attrs = megaraid_host_attrs,
3521         .bios_param = megasas_bios_param,
3522         .map_queues = megasas_map_queues,
3523         .mq_poll = megasas_blk_mq_poll,
3524         .change_queue_depth = scsi_change_queue_depth,
3525         .max_segment_size = 0xffffffff,
3526 };
3527
3528 /**
3529  * megasas_complete_int_cmd -   Completes an internal command
3530  * @instance:                   Adapter soft state
3531  * @cmd:                        Command to be completed
3532  *
3533  * The megasas_issue_blocked_cmd() function waits for a command to complete
3534  * after it issues a command. This function wakes up that waiting routine by
3535  * calling wake_up() on the wait queue.
3536  */
3537 static void
3538 megasas_complete_int_cmd(struct megasas_instance *instance,
3539                          struct megasas_cmd *cmd)
3540 {
3541         if (cmd->cmd_status_drv == DCMD_INIT)
3542                 cmd->cmd_status_drv =
3543                 (cmd->frame->io.cmd_status == MFI_STAT_OK) ?
3544                 DCMD_SUCCESS : DCMD_FAILED;
3545
3546         wake_up(&instance->int_cmd_wait_q);
3547 }
3548
3549 /**
3550  * megasas_complete_abort -     Completes aborting a command
3551  * @instance:                   Adapter soft state
3552  * @cmd:                        Cmd that was issued to abort another cmd
3553  *
3554  * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
3555  * after it issues an abort on a previously issued command. This function
3556  * wakes up all functions waiting on the same wait queue.
3557  */
3558 static void
3559 megasas_complete_abort(struct megasas_instance *instance,
3560                        struct megasas_cmd *cmd)
3561 {
3562         if (cmd->sync_cmd) {
3563                 cmd->sync_cmd = 0;
3564                 cmd->cmd_status_drv = DCMD_SUCCESS;
3565                 wake_up(&instance->abort_cmd_wait_q);
3566         }
3567 }
3568
3569 static void
3570 megasas_set_ld_removed_by_fw(struct megasas_instance *instance)
3571 {
3572         uint i;
3573
3574         for (i = 0; (i < MEGASAS_MAX_LD_IDS); i++) {
3575                 if (instance->ld_ids_prev[i] != 0xff &&
3576                     instance->ld_ids_from_raidmap[i] == 0xff) {
3577                         if (megasas_dbg_lvl & LD_PD_DEBUG)
3578                                 dev_info(&instance->pdev->dev,
3579                                          "LD target ID %d removed from RAID map\n", i);
3580                         instance->ld_tgtid_status[i] = LD_TARGET_ID_DELETED;
3581                 }
3582         }
3583 }
3584
3585 /**
3586  * megasas_complete_cmd -       Completes a command
3587  * @instance:                   Adapter soft state
3588  * @cmd:                        Command to be completed
3589  * @alt_status:                 If non-zero, use this value as status to
3590  *                              SCSI mid-layer instead of the value returned
3591  *                              by the FW. This should be used if caller wants
3592  *                              an alternate status (as in the case of aborted
3593  *                              commands)
3594  */
3595 void
3596 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
3597                      u8 alt_status)
3598 {
3599         int exception = 0;
3600         struct megasas_header *hdr = &cmd->frame->hdr;
3601         unsigned long flags;
3602         struct fusion_context *fusion = instance->ctrl_context;
3603         u32 opcode, status;
3604
3605         /* flag for the retry reset */
3606         cmd->retry_for_fw_reset = 0;
3607
3608         if (cmd->scmd)
3609                 cmd->scmd->SCp.ptr = NULL;
3610
3611         switch (hdr->cmd) {
3612         case MFI_CMD_INVALID:
3613                 /* Some older 1068 controller FW may keep a pended
3614                    MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel
3615                    when booting the kdump kernel.  Ignore this command to
3616                    prevent a kernel panic on shutdown of the kdump kernel. */
3617                 dev_warn(&instance->pdev->dev, "MFI_CMD_INVALID command "
3618                        "completed\n");
3619                 dev_warn(&instance->pdev->dev, "If you have a controller "
3620                        "other than PERC5, please upgrade your firmware\n");
3621                 break;
3622         case MFI_CMD_PD_SCSI_IO:
3623         case MFI_CMD_LD_SCSI_IO:
3624
3625                 /*
3626                  * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
3627                  * issued either through an IO path or an IOCTL path. If it
3628                  * was via IOCTL, we will send it to internal completion.
3629                  */
3630                 if (cmd->sync_cmd) {
3631                         cmd->sync_cmd = 0;
3632                         megasas_complete_int_cmd(instance, cmd);
3633                         break;
3634                 }
3635                 fallthrough;
3636
3637         case MFI_CMD_LD_READ:
3638         case MFI_CMD_LD_WRITE:
3639
3640                 if (alt_status) {
3641                         cmd->scmd->result = alt_status << 16;
3642                         exception = 1;
3643                 }
3644
3645                 if (exception) {
3646
3647                         atomic_dec(&instance->fw_outstanding);
3648
3649                         scsi_dma_unmap(cmd->scmd);
3650                         cmd->scmd->scsi_done(cmd->scmd);
3651                         megasas_return_cmd(instance, cmd);
3652
3653                         break;
3654                 }
3655
3656                 switch (hdr->cmd_status) {
3657
3658                 case MFI_STAT_OK:
3659                         cmd->scmd->result = DID_OK << 16;
3660                         break;
3661
3662                 case MFI_STAT_SCSI_IO_FAILED:
3663                 case MFI_STAT_LD_INIT_IN_PROGRESS:
3664                         cmd->scmd->result =
3665                             (DID_ERROR << 16) | hdr->scsi_status;
3666                         break;
3667
3668                 case MFI_STAT_SCSI_DONE_WITH_ERROR:
3669
3670                         cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
3671
3672                         if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
3673                                 memset(cmd->scmd->sense_buffer, 0,
3674                                        SCSI_SENSE_BUFFERSIZE);
3675                                 memcpy(cmd->scmd->sense_buffer, cmd->sense,
3676                                        hdr->sense_len);
3677                         }
3678
3679                         break;
3680
3681                 case MFI_STAT_LD_OFFLINE:
3682                 case MFI_STAT_DEVICE_NOT_FOUND:
3683                         cmd->scmd->result = DID_BAD_TARGET << 16;
3684                         break;
3685
3686                 default:
3687                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "MFI FW status %#x\n",
3688                                hdr->cmd_status);
3689                         cmd->scmd->result = DID_ERROR << 16;
3690                         break;
3691                 }
3692
3693                 atomic_dec(&instance->fw_outstanding);
3694
3695                 scsi_dma_unmap(cmd->scmd);
3696                 cmd->scmd->scsi_done(cmd->scmd);
3697                 megasas_return_cmd(instance, cmd);
3698
3699                 break;
3700
3701         case MFI_CMD_SMP:
3702         case MFI_CMD_STP:
3703         case MFI_CMD_NVME:
3704         case MFI_CMD_TOOLBOX:
3705                 megasas_complete_int_cmd(instance, cmd);
3706                 break;
3707
3708         case MFI_CMD_DCMD:
3709                 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
3710                 /* Check for LD map update */
3711                 if ((opcode == MR_DCMD_LD_MAP_GET_INFO)
3712                         && (cmd->frame->dcmd.mbox.b[1] == 1)) {
3713                         fusion->fast_path_io = 0;
3714                         spin_lock_irqsave(instance->host->host_lock, flags);
3715                         status = cmd->frame->hdr.cmd_status;
3716                         instance->map_update_cmd = NULL;
3717                         if (status != MFI_STAT_OK) {
3718                                 if (status != MFI_STAT_NOT_FOUND)
3719                                         dev_warn(&instance->pdev->dev, "map syncfailed, status = 0x%x\n",
3720                                                cmd->frame->hdr.cmd_status);
3721                                 else {
3722                                         megasas_return_cmd(instance, cmd);
3723                                         spin_unlock_irqrestore(
3724                                                 instance->host->host_lock,
3725                                                 flags);
3726                                         break;
3727                                 }
3728                         }
3729
3730                         megasas_return_cmd(instance, cmd);
3731
3732                         /*
3733                          * Set fast path IO to ZERO.
3734                          * Validate Map will set proper value.
3735                          * Meanwhile all IOs will go as LD IO.
3736                          */
3737                         if (status == MFI_STAT_OK &&
3738                             (MR_ValidateMapInfo(instance, (instance->map_id + 1)))) {
3739                                 instance->map_id++;
3740                                 fusion->fast_path_io = 1;
3741                         } else {
3742                                 fusion->fast_path_io = 0;
3743                         }
3744
3745                         if (instance->adapter_type >= INVADER_SERIES)
3746                                 megasas_set_ld_removed_by_fw(instance);
3747
3748                         megasas_sync_map_info(instance);
3749                         spin_unlock_irqrestore(instance->host->host_lock,
3750                                                flags);
3751
3752                         break;
3753                 }
3754                 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
3755                     opcode == MR_DCMD_CTRL_EVENT_GET) {
3756                         spin_lock_irqsave(&poll_aen_lock, flags);
3757                         megasas_poll_wait_aen = 0;
3758                         spin_unlock_irqrestore(&poll_aen_lock, flags);
3759                 }
3760
3761                 /* FW has an updated PD sequence */
3762                 if ((opcode == MR_DCMD_SYSTEM_PD_MAP_GET_INFO) &&
3763                         (cmd->frame->dcmd.mbox.b[0] == 1)) {
3764
3765                         spin_lock_irqsave(instance->host->host_lock, flags);
3766                         status = cmd->frame->hdr.cmd_status;
3767                         instance->jbod_seq_cmd = NULL;
3768                         megasas_return_cmd(instance, cmd);
3769
3770                         if (status == MFI_STAT_OK) {
3771                                 instance->pd_seq_map_id++;
3772                                 /* Re-register a pd sync seq num cmd */
3773                                 if (megasas_sync_pd_seq_num(instance, true))
3774                                         instance->use_seqnum_jbod_fp = false;
3775                         } else
3776                                 instance->use_seqnum_jbod_fp = false;
3777
3778                         spin_unlock_irqrestore(instance->host->host_lock, flags);
3779                         break;
3780                 }
3781
3782                 /*
3783                  * See if got an event notification
3784                  */
3785                 if (opcode == MR_DCMD_CTRL_EVENT_WAIT)
3786                         megasas_service_aen(instance, cmd);
3787                 else
3788                         megasas_complete_int_cmd(instance, cmd);
3789
3790                 break;
3791
3792         case MFI_CMD_ABORT:
3793                 /*
3794                  * Cmd issued to abort another cmd returned
3795                  */
3796                 megasas_complete_abort(instance, cmd);
3797                 break;
3798
3799         default:
3800                 dev_info(&instance->pdev->dev, "Unknown command completed! [0x%X]\n",
3801                        hdr->cmd);
3802                 megasas_complete_int_cmd(instance, cmd);
3803                 break;
3804         }
3805 }
3806
3807 /**
3808  * megasas_issue_pending_cmds_again -   issue all pending cmds
3809  *                                      in FW again because of the fw reset
3810  * @instance:                           Adapter soft state
3811  */
3812 static inline void
3813 megasas_issue_pending_cmds_again(struct megasas_instance *instance)
3814 {
3815         struct megasas_cmd *cmd;
3816         struct list_head clist_local;
3817         union megasas_evt_class_locale class_locale;
3818         unsigned long flags;
3819         u32 seq_num;
3820
3821         INIT_LIST_HEAD(&clist_local);
3822         spin_lock_irqsave(&instance->hba_lock, flags);
3823         list_splice_init(&instance->internal_reset_pending_q, &clist_local);
3824         spin_unlock_irqrestore(&instance->hba_lock, flags);
3825
3826         while (!list_empty(&clist_local)) {
3827                 cmd = list_entry((&clist_local)->next,
3828                                         struct megasas_cmd, list);
3829                 list_del_init(&cmd->list);
3830
3831                 if (cmd->sync_cmd || cmd->scmd) {
3832                         dev_notice(&instance->pdev->dev, "command %p, %p:%d"
3833                                 "detected to be pending while HBA reset\n",
3834                                         cmd, cmd->scmd, cmd->sync_cmd);
3835
3836                         cmd->retry_for_fw_reset++;
3837
3838                         if (cmd->retry_for_fw_reset == 3) {
3839                                 dev_notice(&instance->pdev->dev, "cmd %p, %p:%d"
3840                                         "was tried multiple times during reset."
3841                                         "Shutting down the HBA\n",
3842                                         cmd, cmd->scmd, cmd->sync_cmd);
3843                                 instance->instancet->disable_intr(instance);
3844                                 atomic_set(&instance->fw_reset_no_pci_access, 1);
3845                                 megaraid_sas_kill_hba(instance);
3846                                 return;
3847                         }
3848                 }
3849
3850                 if (cmd->sync_cmd == 1) {
3851                         if (cmd->scmd) {
3852                                 dev_notice(&instance->pdev->dev, "unexpected"
3853                                         "cmd attached to internal command!\n");
3854                         }
3855                         dev_notice(&instance->pdev->dev, "%p synchronous cmd"
3856                                                 "on the internal reset queue,"
3857                                                 "issue it again.\n", cmd);
3858                         cmd->cmd_status_drv = DCMD_INIT;
3859                         instance->instancet->fire_cmd(instance,
3860                                                         cmd->frame_phys_addr,
3861                                                         0, instance->reg_set);
3862                 } else if (cmd->scmd) {
3863                         dev_notice(&instance->pdev->dev, "%p scsi cmd [%02x]"
3864                         "detected on the internal queue, issue again.\n",
3865                         cmd, cmd->scmd->cmnd[0]);
3866
3867                         atomic_inc(&instance->fw_outstanding);
3868                         instance->instancet->fire_cmd(instance,
3869                                         cmd->frame_phys_addr,
3870                                         cmd->frame_count-1, instance->reg_set);
3871                 } else {
3872                         dev_notice(&instance->pdev->dev, "%p unexpected cmd on the"
3873                                 "internal reset defer list while re-issue!!\n",
3874                                 cmd);
3875                 }
3876         }
3877
3878         if (instance->aen_cmd) {
3879                 dev_notice(&instance->pdev->dev, "aen_cmd in def process\n");
3880                 megasas_return_cmd(instance, instance->aen_cmd);
3881
3882                 instance->aen_cmd = NULL;
3883         }
3884
3885         /*
3886          * Initiate AEN (Asynchronous Event Notification)
3887          */
3888         seq_num = instance->last_seq_num;
3889         class_locale.members.reserved = 0;
3890         class_locale.members.locale = MR_EVT_LOCALE_ALL;
3891         class_locale.members.class = MR_EVT_CLASS_DEBUG;
3892
3893         megasas_register_aen(instance, seq_num, class_locale.word);
3894 }
3895
3896 /*
3897  * Move the internal reset pending commands to a deferred queue.
3898  *
3899  * We move the commands pending at internal reset time to a
3900  * pending queue. This queue would be flushed after successful
3901  * completion of the internal reset sequence. if the internal reset
3902  * did not complete in time, the kernel reset handler would flush
3903  * these commands.
3904  */
3905 static void
3906 megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
3907 {
3908         struct megasas_cmd *cmd;
3909         int i;
3910         u16 max_cmd = instance->max_fw_cmds;
3911         u32 defer_index;
3912         unsigned long flags;
3913
3914         defer_index = 0;
3915         spin_lock_irqsave(&instance->mfi_pool_lock, flags);
3916         for (i = 0; i < max_cmd; i++) {
3917                 cmd = instance->cmd_list[i];
3918                 if (cmd->sync_cmd == 1 || cmd->scmd) {
3919                         dev_notice(&instance->pdev->dev, "moving cmd[%d]:%p:%d:%p"
3920                                         "on the defer queue as internal\n",
3921                                 defer_index, cmd, cmd->sync_cmd, cmd->scmd);
3922
3923                         if (!list_empty(&cmd->list)) {
3924                                 dev_notice(&instance->pdev->dev, "ERROR while"
3925                                         " moving this cmd:%p, %d %p, it was"
3926                                         "discovered on some list?\n",
3927                                         cmd, cmd->sync_cmd, cmd->scmd);
3928
3929                                 list_del_init(&cmd->list);
3930                         }
3931                         defer_index++;
3932                         list_add_tail(&cmd->list,
3933                                 &instance->internal_reset_pending_q);
3934                 }
3935         }
3936         spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
3937 }
3938
3939
3940 static void
3941 process_fw_state_change_wq(struct work_struct *work)
3942 {
3943         struct megasas_instance *instance =
3944                 container_of(work, struct megasas_instance, work_init);
3945         u32 wait;
3946         unsigned long flags;
3947
3948     if (atomic_read(&instance->adprecovery) != MEGASAS_ADPRESET_SM_INFAULT) {
3949                 dev_notice(&instance->pdev->dev, "error, recovery st %x\n",
3950                                 atomic_read(&instance->adprecovery));
3951                 return ;
3952         }
3953
3954         if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
3955                 dev_notice(&instance->pdev->dev, "FW detected to be in fault"
3956                                         "state, restarting it...\n");
3957
3958                 instance->instancet->disable_intr(instance);
3959                 atomic_set(&instance->fw_outstanding, 0);
3960
3961                 atomic_set(&instance->fw_reset_no_pci_access, 1);
3962                 instance->instancet->adp_reset(instance, instance->reg_set);
3963                 atomic_set(&instance->fw_reset_no_pci_access, 0);
3964
3965                 dev_notice(&instance->pdev->dev, "FW restarted successfully,"
3966                                         "initiating next stage...\n");
3967
3968                 dev_notice(&instance->pdev->dev, "HBA recovery state machine,"
3969                                         "state 2 starting...\n");
3970
3971                 /* waiting for about 20 second before start the second init */
3972                 for (wait = 0; wait < 30; wait++) {
3973                         msleep(1000);
3974                 }
3975
3976                 if (megasas_transition_to_ready(instance, 1)) {
3977                         dev_notice(&instance->pdev->dev, "adapter not ready\n");
3978
3979                         atomic_set(&instance->fw_reset_no_pci_access, 1);
3980                         megaraid_sas_kill_hba(instance);
3981                         return ;
3982                 }
3983
3984                 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
3985                         (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
3986                         (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
3987                         ) {
3988                         *instance->consumer = *instance->producer;
3989                 } else {
3990                         *instance->consumer = 0;
3991                         *instance->producer = 0;
3992                 }
3993
3994                 megasas_issue_init_mfi(instance);
3995
3996                 spin_lock_irqsave(&instance->hba_lock, flags);
3997                 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
3998                 spin_unlock_irqrestore(&instance->hba_lock, flags);
3999                 instance->instancet->enable_intr(instance);
4000
4001                 megasas_issue_pending_cmds_again(instance);
4002                 instance->issuepend_done = 1;
4003         }
4004 }
4005
4006 /**
4007  * megasas_deplete_reply_queue -        Processes all completed commands
4008  * @instance:                           Adapter soft state
4009  * @alt_status:                         Alternate status to be returned to
4010  *                                      SCSI mid-layer instead of the status
4011  *                                      returned by the FW
4012  * Note: this must be called with hba lock held
4013  */
4014 static int
4015 megasas_deplete_reply_queue(struct megasas_instance *instance,
4016                                         u8 alt_status)
4017 {
4018         u32 mfiStatus;
4019         u32 fw_state;
4020
4021         if ((mfiStatus = instance->instancet->check_reset(instance,
4022                                         instance->reg_set)) == 1) {
4023                 return IRQ_HANDLED;
4024         }
4025
4026         mfiStatus = instance->instancet->clear_intr(instance);
4027         if (mfiStatus == 0) {
4028                 /* Hardware may not set outbound_intr_status in MSI-X mode */
4029                 if (!instance->msix_vectors)
4030                         return IRQ_NONE;
4031         }
4032
4033         instance->mfiStatus = mfiStatus;
4034
4035         if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
4036                 fw_state = instance->instancet->read_fw_status_reg(
4037                                 instance) & MFI_STATE_MASK;
4038
4039                 if (fw_state != MFI_STATE_FAULT) {
4040                         dev_notice(&instance->pdev->dev, "fw state:%x\n",
4041                                                 fw_state);
4042                 }
4043
4044                 if ((fw_state == MFI_STATE_FAULT) &&
4045                                 (instance->disableOnlineCtrlReset == 0)) {
4046                         dev_notice(&instance->pdev->dev, "wait adp restart\n");
4047
4048                         if ((instance->pdev->device ==
4049                                         PCI_DEVICE_ID_LSI_SAS1064R) ||
4050                                 (instance->pdev->device ==
4051                                         PCI_DEVICE_ID_DELL_PERC5) ||
4052                                 (instance->pdev->device ==
4053                                         PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
4054
4055                                 *instance->consumer =
4056                                         cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
4057                         }
4058
4059
4060                         instance->instancet->disable_intr(instance);
4061                         atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
4062                         instance->issuepend_done = 0;
4063
4064                         atomic_set(&instance->fw_outstanding, 0);
4065                         megasas_internal_reset_defer_cmds(instance);
4066
4067                         dev_notice(&instance->pdev->dev, "fwState=%x, stage:%d\n",
4068                                         fw_state, atomic_read(&instance->adprecovery));
4069
4070                         schedule_work(&instance->work_init);
4071                         return IRQ_HANDLED;
4072
4073                 } else {
4074                         dev_notice(&instance->pdev->dev, "fwstate:%x, dis_OCR=%x\n",
4075                                 fw_state, instance->disableOnlineCtrlReset);
4076                 }
4077         }
4078
4079         tasklet_schedule(&instance->isr_tasklet);
4080         return IRQ_HANDLED;
4081 }
4082
4083 /**
4084  * megasas_isr - isr entry point
4085  * @irq:        IRQ number
4086  * @devp:       IRQ context address
4087  */
4088 static irqreturn_t megasas_isr(int irq, void *devp)
4089 {
4090         struct megasas_irq_context *irq_context = devp;
4091         struct megasas_instance *instance = irq_context->instance;
4092         unsigned long flags;
4093         irqreturn_t rc;
4094
4095         if (atomic_read(&instance->fw_reset_no_pci_access))
4096                 return IRQ_HANDLED;
4097
4098         spin_lock_irqsave(&instance->hba_lock, flags);
4099         rc = megasas_deplete_reply_queue(instance, DID_OK);
4100         spin_unlock_irqrestore(&instance->hba_lock, flags);
4101
4102         return rc;
4103 }
4104
4105 /**
4106  * megasas_transition_to_ready -        Move the FW to READY state
4107  * @instance:                           Adapter soft state
4108  * @ocr:                                Adapter reset state
4109  *
4110  * During the initialization, FW passes can potentially be in any one of
4111  * several possible states. If the FW in operational, waiting-for-handshake
4112  * states, driver must take steps to bring it to ready state. Otherwise, it
4113  * has to wait for the ready state.
4114  */
4115 int
4116 megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
4117 {
4118         int i;
4119         u8 max_wait;
4120         u32 fw_state;
4121         u32 abs_state, curr_abs_state;
4122
4123         abs_state = instance->instancet->read_fw_status_reg(instance);
4124         fw_state = abs_state & MFI_STATE_MASK;
4125
4126         if (fw_state != MFI_STATE_READY)
4127                 dev_info(&instance->pdev->dev, "Waiting for FW to come to ready"
4128                        " state\n");
4129
4130         while (fw_state != MFI_STATE_READY) {
4131
4132                 switch (fw_state) {
4133
4134                 case MFI_STATE_FAULT:
4135                         dev_printk(KERN_ERR, &instance->pdev->dev,
4136                                    "FW in FAULT state, Fault code:0x%x subcode:0x%x func:%s\n",
4137                                    abs_state & MFI_STATE_FAULT_CODE,
4138                                    abs_state & MFI_STATE_FAULT_SUBCODE, __func__);
4139                         if (ocr) {
4140                                 max_wait = MEGASAS_RESET_WAIT_TIME;
4141                                 break;
4142                         } else {
4143                                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4144                                 megasas_dump_reg_set(instance->reg_set);
4145                                 return -ENODEV;
4146                         }
4147
4148                 case MFI_STATE_WAIT_HANDSHAKE:
4149                         /*
4150                          * Set the CLR bit in inbound doorbell
4151                          */
4152                         if ((instance->pdev->device ==
4153                                 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4154                                 (instance->pdev->device ==
4155                                  PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4156                                 (instance->adapter_type != MFI_SERIES))
4157                                 writel(
4158                                   MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
4159                                   &instance->reg_set->doorbell);
4160                         else
4161                                 writel(
4162                                     MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
4163                                         &instance->reg_set->inbound_doorbell);
4164
4165                         max_wait = MEGASAS_RESET_WAIT_TIME;
4166                         break;
4167
4168                 case MFI_STATE_BOOT_MESSAGE_PENDING:
4169                         if ((instance->pdev->device ==
4170                              PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4171                                 (instance->pdev->device ==
4172                                  PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4173                                 (instance->adapter_type != MFI_SERIES))
4174                                 writel(MFI_INIT_HOTPLUG,
4175                                        &instance->reg_set->doorbell);
4176                         else
4177                                 writel(MFI_INIT_HOTPLUG,
4178                                         &instance->reg_set->inbound_doorbell);
4179
4180                         max_wait = MEGASAS_RESET_WAIT_TIME;
4181                         break;
4182
4183                 case MFI_STATE_OPERATIONAL:
4184                         /*
4185                          * Bring it to READY state; assuming max wait 10 secs
4186                          */
4187                         instance->instancet->disable_intr(instance);
4188                         if ((instance->pdev->device ==
4189                                 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4190                                 (instance->pdev->device ==
4191                                 PCI_DEVICE_ID_LSI_SAS0071SKINNY)  ||
4192                                 (instance->adapter_type != MFI_SERIES)) {
4193                                 writel(MFI_RESET_FLAGS,
4194                                         &instance->reg_set->doorbell);
4195
4196                                 if (instance->adapter_type != MFI_SERIES) {
4197                                         for (i = 0; i < (10 * 1000); i += 20) {
4198                                                 if (megasas_readl(
4199                                                             instance,
4200                                                             &instance->
4201                                                             reg_set->
4202                                                             doorbell) & 1)
4203                                                         msleep(20);
4204                                                 else
4205                                                         break;
4206                                         }
4207                                 }
4208                         } else
4209                                 writel(MFI_RESET_FLAGS,
4210                                         &instance->reg_set->inbound_doorbell);
4211
4212                         max_wait = MEGASAS_RESET_WAIT_TIME;
4213                         break;
4214
4215                 case MFI_STATE_UNDEFINED:
4216                         /*
4217                          * This state should not last for more than 2 seconds
4218                          */
4219                         max_wait = MEGASAS_RESET_WAIT_TIME;
4220                         break;
4221
4222                 case MFI_STATE_BB_INIT:
4223                         max_wait = MEGASAS_RESET_WAIT_TIME;
4224                         break;
4225
4226                 case MFI_STATE_FW_INIT:
4227                         max_wait = MEGASAS_RESET_WAIT_TIME;
4228                         break;
4229
4230                 case MFI_STATE_FW_INIT_2:
4231                         max_wait = MEGASAS_RESET_WAIT_TIME;
4232                         break;
4233
4234                 case MFI_STATE_DEVICE_SCAN:
4235                         max_wait = MEGASAS_RESET_WAIT_TIME;
4236                         break;
4237
4238                 case MFI_STATE_FLUSH_CACHE:
4239                         max_wait = MEGASAS_RESET_WAIT_TIME;
4240                         break;
4241
4242                 default:
4243                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "Unknown state 0x%x\n",
4244                                fw_state);
4245                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4246                         megasas_dump_reg_set(instance->reg_set);
4247                         return -ENODEV;
4248                 }
4249
4250                 /*
4251                  * The cur_state should not last for more than max_wait secs
4252                  */
4253                 for (i = 0; i < max_wait * 50; i++) {
4254                         curr_abs_state = instance->instancet->
4255                                 read_fw_status_reg(instance);
4256
4257                         if (abs_state == curr_abs_state) {
4258                                 msleep(20);
4259                         } else
4260                                 break;
4261                 }
4262
4263                 /*
4264                  * Return error if fw_state hasn't changed after max_wait
4265                  */
4266                 if (curr_abs_state == abs_state) {
4267                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW state [%d] hasn't changed "
4268                                "in %d secs\n", fw_state, max_wait);
4269                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4270                         megasas_dump_reg_set(instance->reg_set);
4271                         return -ENODEV;
4272                 }
4273
4274                 abs_state = curr_abs_state;
4275                 fw_state = curr_abs_state & MFI_STATE_MASK;
4276         }
4277         dev_info(&instance->pdev->dev, "FW now in Ready state\n");
4278
4279         return 0;
4280 }
4281
4282 /**
4283  * megasas_teardown_frame_pool -        Destroy the cmd frame DMA pool
4284  * @instance:                           Adapter soft state
4285  */
4286 static void megasas_teardown_frame_pool(struct megasas_instance *instance)
4287 {
4288         int i;
4289         u16 max_cmd = instance->max_mfi_cmds;
4290         struct megasas_cmd *cmd;
4291
4292         if (!instance->frame_dma_pool)
4293                 return;
4294
4295         /*
4296          * Return all frames to pool
4297          */
4298         for (i = 0; i < max_cmd; i++) {
4299
4300                 cmd = instance->cmd_list[i];
4301
4302                 if (cmd->frame)
4303                         dma_pool_free(instance->frame_dma_pool, cmd->frame,
4304                                       cmd->frame_phys_addr);
4305
4306                 if (cmd->sense)
4307                         dma_pool_free(instance->sense_dma_pool, cmd->sense,
4308                                       cmd->sense_phys_addr);
4309         }
4310
4311         /*
4312          * Now destroy the pool itself
4313          */
4314         dma_pool_destroy(instance->frame_dma_pool);
4315         dma_pool_destroy(instance->sense_dma_pool);
4316
4317         instance->frame_dma_pool = NULL;
4318         instance->sense_dma_pool = NULL;
4319 }
4320
4321 /**
4322  * megasas_create_frame_pool -  Creates DMA pool for cmd frames
4323  * @instance:                   Adapter soft state
4324  *
4325  * Each command packet has an embedded DMA memory buffer that is used for
4326  * filling MFI frame and the SG list that immediately follows the frame. This
4327  * function creates those DMA memory buffers for each command packet by using
4328  * PCI pool facility.
4329  */
4330 static int megasas_create_frame_pool(struct megasas_instance *instance)
4331 {
4332         int i;
4333         u16 max_cmd;
4334         u32 frame_count;
4335         struct megasas_cmd *cmd;
4336
4337         max_cmd = instance->max_mfi_cmds;
4338
4339         /*
4340          * For MFI controllers.
4341          * max_num_sge = 60
4342          * max_sge_sz  = 16 byte (sizeof megasas_sge_skinny)
4343          * Total 960 byte (15 MFI frame of 64 byte)
4344          *
4345          * Fusion adapter require only 3 extra frame.
4346          * max_num_sge = 16 (defined as MAX_IOCTL_SGE)
4347          * max_sge_sz  = 12 byte (sizeof  megasas_sge64)
4348          * Total 192 byte (3 MFI frame of 64 byte)
4349          */
4350         frame_count = (instance->adapter_type == MFI_SERIES) ?
4351                         (15 + 1) : (3 + 1);
4352         instance->mfi_frame_size = MEGAMFI_FRAME_SIZE * frame_count;
4353         /*
4354          * Use DMA pool facility provided by PCI layer
4355          */
4356         instance->frame_dma_pool = dma_pool_create("megasas frame pool",
4357                                         &instance->pdev->dev,
4358                                         instance->mfi_frame_size, 256, 0);
4359
4360         if (!instance->frame_dma_pool) {
4361                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup frame pool\n");
4362                 return -ENOMEM;
4363         }
4364
4365         instance->sense_dma_pool = dma_pool_create("megasas sense pool",
4366                                                    &instance->pdev->dev, 128,
4367                                                    4, 0);
4368
4369         if (!instance->sense_dma_pool) {
4370                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup sense pool\n");
4371
4372                 dma_pool_destroy(instance->frame_dma_pool);
4373                 instance->frame_dma_pool = NULL;
4374
4375                 return -ENOMEM;
4376         }
4377
4378         /*
4379          * Allocate and attach a frame to each of the commands in cmd_list.
4380          * By making cmd->index as the context instead of the &cmd, we can
4381          * always use 32bit context regardless of the architecture
4382          */
4383         for (i = 0; i < max_cmd; i++) {
4384
4385                 cmd = instance->cmd_list[i];
4386
4387                 cmd->frame = dma_pool_zalloc(instance->frame_dma_pool,
4388                                             GFP_KERNEL, &cmd->frame_phys_addr);
4389
4390                 cmd->sense = dma_pool_alloc(instance->sense_dma_pool,
4391                                             GFP_KERNEL, &cmd->sense_phys_addr);
4392
4393                 /*
4394                  * megasas_teardown_frame_pool() takes care of freeing
4395                  * whatever has been allocated
4396                  */
4397                 if (!cmd->frame || !cmd->sense) {
4398                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "dma_pool_alloc failed\n");
4399                         megasas_teardown_frame_pool(instance);
4400                         return -ENOMEM;
4401                 }
4402
4403                 cmd->frame->io.context = cpu_to_le32(cmd->index);
4404                 cmd->frame->io.pad_0 = 0;
4405                 if ((instance->adapter_type == MFI_SERIES) && reset_devices)
4406                         cmd->frame->hdr.cmd = MFI_CMD_INVALID;
4407         }
4408
4409         return 0;
4410 }
4411
4412 /**
4413  * megasas_free_cmds -  Free all the cmds in the free cmd pool
4414  * @instance:           Adapter soft state
4415  */
4416 void megasas_free_cmds(struct megasas_instance *instance)
4417 {
4418         int i;
4419
4420         /* First free the MFI frame pool */
4421         megasas_teardown_frame_pool(instance);
4422
4423         /* Free all the commands in the cmd_list */
4424         for (i = 0; i < instance->max_mfi_cmds; i++)
4425
4426                 kfree(instance->cmd_list[i]);
4427
4428         /* Free the cmd_list buffer itself */
4429         kfree(instance->cmd_list);
4430         instance->cmd_list = NULL;
4431
4432         INIT_LIST_HEAD(&instance->cmd_pool);
4433 }
4434
4435 /**
4436  * megasas_alloc_cmds - Allocates the command packets
4437  * @instance:           Adapter soft state
4438  *
4439  * Each command that is issued to the FW, whether IO commands from the OS or
4440  * internal commands like IOCTLs, are wrapped in local data structure called
4441  * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
4442  * the FW.
4443  *
4444  * Each frame has a 32-bit field called context (tag). This context is used
4445  * to get back the megasas_cmd from the frame when a frame gets completed in
4446  * the ISR. Typically the address of the megasas_cmd itself would be used as
4447  * the context. But we wanted to keep the differences between 32 and 64 bit
4448  * systems to the mininum. We always use 32 bit integers for the context. In
4449  * this driver, the 32 bit values are the indices into an array cmd_list.
4450  * This array is used only to look up the megasas_cmd given the context. The
4451  * free commands themselves are maintained in a linked list called cmd_pool.
4452  */
4453 int megasas_alloc_cmds(struct megasas_instance *instance)
4454 {
4455         int i;
4456         int j;
4457         u16 max_cmd;
4458         struct megasas_cmd *cmd;
4459
4460         max_cmd = instance->max_mfi_cmds;
4461
4462         /*
4463          * instance->cmd_list is an array of struct megasas_cmd pointers.
4464          * Allocate the dynamic array first and then allocate individual
4465          * commands.
4466          */
4467         instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
4468
4469         if (!instance->cmd_list) {
4470                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "out of memory\n");
4471                 return -ENOMEM;
4472         }
4473
4474         memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd);
4475
4476         for (i = 0; i < max_cmd; i++) {
4477                 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
4478                                                 GFP_KERNEL);
4479
4480                 if (!instance->cmd_list[i]) {
4481
4482                         for (j = 0; j < i; j++)
4483                                 kfree(instance->cmd_list[j]);
4484
4485                         kfree(instance->cmd_list);
4486                         instance->cmd_list = NULL;
4487
4488                         return -ENOMEM;
4489                 }
4490         }
4491
4492         for (i = 0; i < max_cmd; i++) {
4493                 cmd = instance->cmd_list[i];
4494                 memset(cmd, 0, sizeof(struct megasas_cmd));
4495                 cmd->index = i;
4496                 cmd->scmd = NULL;
4497                 cmd->instance = instance;
4498
4499                 list_add_tail(&cmd->list, &instance->cmd_pool);
4500         }
4501
4502         /*
4503          * Create a frame pool and assign one frame to each cmd
4504          */
4505         if (megasas_create_frame_pool(instance)) {
4506                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error creating frame DMA pool\n");
4507                 megasas_free_cmds(instance);
4508                 return -ENOMEM;
4509         }
4510
4511         return 0;
4512 }
4513
4514 /*
4515  * dcmd_timeout_ocr_possible -  Check if OCR is possible based on Driver/FW state.
4516  * @instance:                           Adapter soft state
4517  *
4518  * Return 0 for only Fusion adapter, if driver load/unload is not in progress
4519  * or FW is not under OCR.
4520  */
4521 inline int
4522 dcmd_timeout_ocr_possible(struct megasas_instance *instance) {
4523
4524         if (instance->adapter_type == MFI_SERIES)
4525                 return KILL_ADAPTER;
4526         else if (instance->unload ||
4527                         test_bit(MEGASAS_FUSION_OCR_NOT_POSSIBLE,
4528                                  &instance->reset_flags))
4529                 return IGNORE_TIMEOUT;
4530         else
4531                 return INITIATE_OCR;
4532 }
4533
4534 static void
4535 megasas_get_pd_info(struct megasas_instance *instance, struct scsi_device *sdev)
4536 {
4537         int ret;
4538         struct megasas_cmd *cmd;
4539         struct megasas_dcmd_frame *dcmd;
4540
4541         struct MR_PRIV_DEVICE *mr_device_priv_data;
4542         u16 device_id = 0;
4543
4544         device_id = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + sdev->id;
4545         cmd = megasas_get_cmd(instance);
4546
4547         if (!cmd) {
4548                 dev_err(&instance->pdev->dev, "Failed to get cmd %s\n", __func__);
4549                 return;
4550         }
4551
4552         dcmd = &cmd->frame->dcmd;
4553
4554         memset(instance->pd_info, 0, sizeof(*instance->pd_info));
4555         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4556
4557         dcmd->mbox.s[0] = cpu_to_le16(device_id);
4558         dcmd->cmd = MFI_CMD_DCMD;
4559         dcmd->cmd_status = 0xFF;
4560         dcmd->sge_count = 1;
4561         dcmd->flags = MFI_FRAME_DIR_READ;
4562         dcmd->timeout = 0;
4563         dcmd->pad_0 = 0;
4564         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_PD_INFO));
4565         dcmd->opcode = cpu_to_le32(MR_DCMD_PD_GET_INFO);
4566
4567         megasas_set_dma_settings(instance, dcmd, instance->pd_info_h,
4568                                  sizeof(struct MR_PD_INFO));
4569
4570         if ((instance->adapter_type != MFI_SERIES) &&
4571             !instance->mask_interrupts)
4572                 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4573         else
4574                 ret = megasas_issue_polled(instance, cmd);
4575
4576         switch (ret) {
4577         case DCMD_SUCCESS:
4578                 mr_device_priv_data = sdev->hostdata;
4579                 le16_to_cpus((u16 *)&instance->pd_info->state.ddf.pdType);
4580                 mr_device_priv_data->interface_type =
4581                                 instance->pd_info->state.ddf.pdType.intf;
4582                 break;
4583
4584         case DCMD_TIMEOUT:
4585
4586                 switch (dcmd_timeout_ocr_possible(instance)) {
4587                 case INITIATE_OCR:
4588                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4589                         mutex_unlock(&instance->reset_mutex);
4590                         megasas_reset_fusion(instance->host,
4591                                 MFI_IO_TIMEOUT_OCR);
4592                         mutex_lock(&instance->reset_mutex);
4593                         break;
4594                 case KILL_ADAPTER:
4595                         megaraid_sas_kill_hba(instance);
4596                         break;
4597                 case IGNORE_TIMEOUT:
4598                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4599                                 __func__, __LINE__);
4600                         break;
4601                 }
4602
4603                 break;
4604         }
4605
4606         if (ret != DCMD_TIMEOUT)
4607                 megasas_return_cmd(instance, cmd);
4608
4609         return;
4610 }
4611 /*
4612  * megasas_get_pd_list_info -   Returns FW's pd_list structure
4613  * @instance:                           Adapter soft state
4614  * @pd_list:                            pd_list structure
4615  *
4616  * Issues an internal command (DCMD) to get the FW's controller PD
4617  * list structure.  This information is mainly used to find out SYSTEM
4618  * supported by the FW.
4619  */
4620 static int
4621 megasas_get_pd_list(struct megasas_instance *instance)
4622 {
4623         int ret = 0, pd_index = 0;
4624         struct megasas_cmd *cmd;
4625         struct megasas_dcmd_frame *dcmd;
4626         struct MR_PD_LIST *ci;
4627         struct MR_PD_ADDRESS *pd_addr;
4628
4629         if (instance->pd_list_not_supported) {
4630                 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4631                 "not supported by firmware\n");
4632                 return ret;
4633         }
4634
4635         ci = instance->pd_list_buf;
4636
4637         cmd = megasas_get_cmd(instance);
4638
4639         if (!cmd) {
4640                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "(get_pd_list): Failed to get cmd\n");
4641                 return -ENOMEM;
4642         }
4643
4644         dcmd = &cmd->frame->dcmd;
4645
4646         memset(ci, 0, sizeof(*ci));
4647         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4648
4649         dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
4650         dcmd->mbox.b[1] = 0;
4651         dcmd->cmd = MFI_CMD_DCMD;
4652         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4653         dcmd->sge_count = 1;
4654         dcmd->flags = MFI_FRAME_DIR_READ;
4655         dcmd->timeout = 0;
4656         dcmd->pad_0 = 0;
4657         dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
4658         dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY);
4659
4660         megasas_set_dma_settings(instance, dcmd, instance->pd_list_buf_h,
4661                                  (MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST)));
4662
4663         if ((instance->adapter_type != MFI_SERIES) &&
4664             !instance->mask_interrupts)
4665                 ret = megasas_issue_blocked_cmd(instance, cmd,
4666                         MFI_IO_TIMEOUT_SECS);
4667         else
4668                 ret = megasas_issue_polled(instance, cmd);
4669
4670         switch (ret) {
4671         case DCMD_FAILED:
4672                 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4673                         "failed/not supported by firmware\n");
4674
4675                 if (instance->adapter_type != MFI_SERIES)
4676                         megaraid_sas_kill_hba(instance);
4677                 else
4678                         instance->pd_list_not_supported = 1;
4679                 break;
4680         case DCMD_TIMEOUT:
4681
4682                 switch (dcmd_timeout_ocr_possible(instance)) {
4683                 case INITIATE_OCR:
4684                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4685                         /*
4686                          * DCMD failed from AEN path.
4687                          * AEN path already hold reset_mutex to avoid PCI access
4688                          * while OCR is in progress.
4689                          */
4690                         mutex_unlock(&instance->reset_mutex);
4691                         megasas_reset_fusion(instance->host,
4692                                                 MFI_IO_TIMEOUT_OCR);
4693                         mutex_lock(&instance->reset_mutex);
4694                         break;
4695                 case KILL_ADAPTER:
4696                         megaraid_sas_kill_hba(instance);
4697                         break;
4698                 case IGNORE_TIMEOUT:
4699                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d \n",
4700                                 __func__, __LINE__);
4701                         break;
4702                 }
4703
4704                 break;
4705
4706         case DCMD_SUCCESS:
4707                 pd_addr = ci->addr;
4708                 if (megasas_dbg_lvl & LD_PD_DEBUG)
4709                         dev_info(&instance->pdev->dev, "%s, sysPD count: 0x%x\n",
4710                                  __func__, le32_to_cpu(ci->count));
4711
4712                 if ((le32_to_cpu(ci->count) >
4713                         (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL)))
4714                         break;
4715
4716                 memset(instance->local_pd_list, 0,
4717                                 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
4718
4719                 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) {
4720                         instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid     =
4721                                         le16_to_cpu(pd_addr->deviceId);
4722                         instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType       =
4723                                         pd_addr->scsiDevType;
4724                         instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState      =
4725                                         MR_PD_STATE_SYSTEM;
4726                         if (megasas_dbg_lvl & LD_PD_DEBUG)
4727                                 dev_info(&instance->pdev->dev,
4728                                          "PD%d: targetID: 0x%03x deviceType:0x%x\n",
4729                                          pd_index, le16_to_cpu(pd_addr->deviceId),
4730                                          pd_addr->scsiDevType);
4731                         pd_addr++;
4732                 }
4733
4734                 memcpy(instance->pd_list, instance->local_pd_list,
4735                         sizeof(instance->pd_list));
4736                 break;
4737
4738         }
4739
4740         if (ret != DCMD_TIMEOUT)
4741                 megasas_return_cmd(instance, cmd);
4742
4743         return ret;
4744 }
4745
4746 /*
4747  * megasas_get_ld_list_info -   Returns FW's ld_list structure
4748  * @instance:                           Adapter soft state
4749  * @ld_list:                            ld_list structure
4750  *
4751  * Issues an internal command (DCMD) to get the FW's controller PD
4752  * list structure.  This information is mainly used to find out SYSTEM
4753  * supported by the FW.
4754  */
4755 static int
4756 megasas_get_ld_list(struct megasas_instance *instance)
4757 {
4758         int ret = 0, ld_index = 0, ids = 0;
4759         struct megasas_cmd *cmd;
4760         struct megasas_dcmd_frame *dcmd;
4761         struct MR_LD_LIST *ci;
4762         dma_addr_t ci_h = 0;
4763         u32 ld_count;
4764
4765         ci = instance->ld_list_buf;
4766         ci_h = instance->ld_list_buf_h;
4767
4768         cmd = megasas_get_cmd(instance);
4769
4770         if (!cmd) {
4771                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_list: Failed to get cmd\n");
4772                 return -ENOMEM;
4773         }
4774
4775         dcmd = &cmd->frame->dcmd;
4776
4777         memset(ci, 0, sizeof(*ci));
4778         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4779
4780         if (instance->supportmax256vd)
4781                 dcmd->mbox.b[0] = 1;
4782         dcmd->cmd = MFI_CMD_DCMD;
4783         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4784         dcmd->sge_count = 1;
4785         dcmd->flags = MFI_FRAME_DIR_READ;
4786         dcmd->timeout = 0;
4787         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST));
4788         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST);
4789         dcmd->pad_0  = 0;
4790
4791         megasas_set_dma_settings(instance, dcmd, ci_h,
4792                                  sizeof(struct MR_LD_LIST));
4793
4794         if ((instance->adapter_type != MFI_SERIES) &&
4795             !instance->mask_interrupts)
4796                 ret = megasas_issue_blocked_cmd(instance, cmd,
4797                         MFI_IO_TIMEOUT_SECS);
4798         else
4799                 ret = megasas_issue_polled(instance, cmd);
4800
4801         ld_count = le32_to_cpu(ci->ldCount);
4802
4803         switch (ret) {
4804         case DCMD_FAILED:
4805                 megaraid_sas_kill_hba(instance);
4806                 break;
4807         case DCMD_TIMEOUT:
4808
4809                 switch (dcmd_timeout_ocr_possible(instance)) {
4810                 case INITIATE_OCR:
4811                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4812                         /*
4813                          * DCMD failed from AEN path.
4814                          * AEN path already hold reset_mutex to avoid PCI access
4815                          * while OCR is in progress.
4816                          */
4817                         mutex_unlock(&instance->reset_mutex);
4818                         megasas_reset_fusion(instance->host,
4819                                                 MFI_IO_TIMEOUT_OCR);
4820                         mutex_lock(&instance->reset_mutex);
4821                         break;
4822                 case KILL_ADAPTER:
4823                         megaraid_sas_kill_hba(instance);
4824                         break;
4825                 case IGNORE_TIMEOUT:
4826                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4827                                 __func__, __LINE__);
4828                         break;
4829                 }
4830
4831                 break;
4832
4833         case DCMD_SUCCESS:
4834                 if (megasas_dbg_lvl & LD_PD_DEBUG)
4835                         dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n",
4836                                  __func__, ld_count);
4837
4838                 if (ld_count > instance->fw_supported_vd_count)
4839                         break;
4840
4841                 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
4842
4843                 for (ld_index = 0; ld_index < ld_count; ld_index++) {
4844                         if (ci->ldList[ld_index].state != 0) {
4845                                 ids = ci->ldList[ld_index].ref.targetId;
4846                                 instance->ld_ids[ids] = ci->ldList[ld_index].ref.targetId;
4847                                 if (megasas_dbg_lvl & LD_PD_DEBUG)
4848                                         dev_info(&instance->pdev->dev,
4849                                                  "LD%d: targetID: 0x%03x\n",
4850                                                  ld_index, ids);
4851                         }
4852                 }
4853
4854                 break;
4855         }
4856
4857         if (ret != DCMD_TIMEOUT)
4858                 megasas_return_cmd(instance, cmd);
4859
4860         return ret;
4861 }
4862
4863 /**
4864  * megasas_ld_list_query -      Returns FW's ld_list structure
4865  * @instance:                           Adapter soft state
4866  * @query_type:                         ld_list structure type
4867  *
4868  * Issues an internal command (DCMD) to get the FW's controller PD
4869  * list structure.  This information is mainly used to find out SYSTEM
4870  * supported by the FW.
4871  */
4872 static int
4873 megasas_ld_list_query(struct megasas_instance *instance, u8 query_type)
4874 {
4875         int ret = 0, ld_index = 0, ids = 0;
4876         struct megasas_cmd *cmd;
4877         struct megasas_dcmd_frame *dcmd;
4878         struct MR_LD_TARGETID_LIST *ci;
4879         dma_addr_t ci_h = 0;
4880         u32 tgtid_count;
4881
4882         ci = instance->ld_targetid_list_buf;
4883         ci_h = instance->ld_targetid_list_buf_h;
4884
4885         cmd = megasas_get_cmd(instance);
4886
4887         if (!cmd) {
4888                 dev_warn(&instance->pdev->dev,
4889                          "megasas_ld_list_query: Failed to get cmd\n");
4890                 return -ENOMEM;
4891         }
4892
4893         dcmd = &cmd->frame->dcmd;
4894
4895         memset(ci, 0, sizeof(*ci));
4896         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4897
4898         dcmd->mbox.b[0] = query_type;
4899         if (instance->supportmax256vd)
4900                 dcmd->mbox.b[2] = 1;
4901
4902         dcmd->cmd = MFI_CMD_DCMD;
4903         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4904         dcmd->sge_count = 1;
4905         dcmd->flags = MFI_FRAME_DIR_READ;
4906         dcmd->timeout = 0;
4907         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
4908         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY);
4909         dcmd->pad_0  = 0;
4910
4911         megasas_set_dma_settings(instance, dcmd, ci_h,
4912                                  sizeof(struct MR_LD_TARGETID_LIST));
4913
4914         if ((instance->adapter_type != MFI_SERIES) &&
4915             !instance->mask_interrupts)
4916                 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4917         else
4918                 ret = megasas_issue_polled(instance, cmd);
4919
4920         switch (ret) {
4921         case DCMD_FAILED:
4922                 dev_info(&instance->pdev->dev,
4923                         "DCMD not supported by firmware - %s %d\n",
4924                                 __func__, __LINE__);
4925                 ret = megasas_get_ld_list(instance);
4926                 break;
4927         case DCMD_TIMEOUT:
4928                 switch (dcmd_timeout_ocr_possible(instance)) {
4929                 case INITIATE_OCR:
4930                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4931                         /*
4932                          * DCMD failed from AEN path.
4933                          * AEN path already hold reset_mutex to avoid PCI access
4934                          * while OCR is in progress.
4935                          */
4936                         mutex_unlock(&instance->reset_mutex);
4937                         megasas_reset_fusion(instance->host,
4938                                                 MFI_IO_TIMEOUT_OCR);
4939                         mutex_lock(&instance->reset_mutex);
4940                         break;
4941                 case KILL_ADAPTER:
4942                         megaraid_sas_kill_hba(instance);
4943                         break;
4944                 case IGNORE_TIMEOUT:
4945                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4946                                 __func__, __LINE__);
4947                         break;
4948                 }
4949
4950                 break;
4951         case DCMD_SUCCESS:
4952                 tgtid_count = le32_to_cpu(ci->count);
4953
4954                 if (megasas_dbg_lvl & LD_PD_DEBUG)
4955                         dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n",
4956                                  __func__, tgtid_count);
4957
4958                 if ((tgtid_count > (instance->fw_supported_vd_count)))
4959                         break;
4960
4961                 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
4962                 for (ld_index = 0; ld_index < tgtid_count; ld_index++) {
4963                         ids = ci->targetId[ld_index];
4964                         instance->ld_ids[ids] = ci->targetId[ld_index];
4965                         if (megasas_dbg_lvl & LD_PD_DEBUG)
4966                                 dev_info(&instance->pdev->dev, "LD%d: targetID: 0x%03x\n",
4967                                          ld_index, ci->targetId[ld_index]);
4968                 }
4969
4970                 break;
4971         }
4972
4973         if (ret != DCMD_TIMEOUT)
4974                 megasas_return_cmd(instance, cmd);
4975
4976         return ret;
4977 }
4978
4979 /**
4980  * megasas_host_device_list_query
4981  * dcmd.opcode            - MR_DCMD_CTRL_DEVICE_LIST_GET
4982  * dcmd.mbox              - reserved
4983  * dcmd.sge IN            - ptr to return MR_HOST_DEVICE_LIST structure
4984  * Desc:    This DCMD will return the combined device list
4985  * Status:  MFI_STAT_OK - List returned successfully
4986  *          MFI_STAT_INVALID_CMD - Firmware support for the feature has been
4987  *                                 disabled
4988  * @instance:                   Adapter soft state
4989  * @is_probe:                   Driver probe check
4990  * Return:                      0 if DCMD succeeded
4991  *                               non-zero if failed
4992  */
4993 static int
4994 megasas_host_device_list_query(struct megasas_instance *instance,
4995                                bool is_probe)
4996 {
4997         int ret, i, target_id;
4998         struct megasas_cmd *cmd;
4999         struct megasas_dcmd_frame *dcmd;
5000         struct MR_HOST_DEVICE_LIST *ci;
5001         u32 count;
5002         dma_addr_t ci_h;
5003
5004         ci = instance->host_device_list_buf;
5005         ci_h = instance->host_device_list_buf_h;
5006
5007         cmd = megasas_get_cmd(instance);
5008
5009         if (!cmd) {
5010                 dev_warn(&instance->pdev->dev,
5011                          "%s: failed to get cmd\n",
5012                          __func__);
5013                 return -ENOMEM;
5014         }
5015
5016         dcmd = &cmd->frame->dcmd;
5017
5018         memset(ci, 0, sizeof(*ci));
5019         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5020
5021         dcmd->mbox.b[0] = is_probe ? 0 : 1;
5022         dcmd->cmd = MFI_CMD_DCMD;
5023         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5024         dcmd->sge_count = 1;
5025         dcmd->flags = MFI_FRAME_DIR_READ;
5026         dcmd->timeout = 0;
5027         dcmd->pad_0 = 0;
5028         dcmd->data_xfer_len = cpu_to_le32(HOST_DEVICE_LIST_SZ);
5029         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_DEVICE_LIST_GET);
5030
5031         megasas_set_dma_settings(instance, dcmd, ci_h, HOST_DEVICE_LIST_SZ);
5032
5033         if (!instance->mask_interrupts) {
5034                 ret = megasas_issue_blocked_cmd(instance, cmd,
5035                                                 MFI_IO_TIMEOUT_SECS);
5036         } else {
5037                 ret = megasas_issue_polled(instance, cmd);
5038                 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5039         }
5040
5041         switch (ret) {
5042         case DCMD_SUCCESS:
5043                 /* Fill the internal pd_list and ld_ids array based on
5044                  * targetIds returned by FW
5045                  */
5046                 count = le32_to_cpu(ci->count);
5047
5048                 if (count > (MEGASAS_MAX_PD + MAX_LOGICAL_DRIVES_EXT))
5049                         break;
5050
5051                 if (megasas_dbg_lvl & LD_PD_DEBUG)
5052                         dev_info(&instance->pdev->dev, "%s, Device count: 0x%x\n",
5053                                  __func__, count);
5054
5055                 memset(instance->local_pd_list, 0,
5056                        MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
5057                 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
5058                 for (i = 0; i < count; i++) {
5059                         target_id = le16_to_cpu(ci->host_device_list[i].target_id);
5060                         if (ci->host_device_list[i].flags.u.bits.is_sys_pd) {
5061                                 instance->local_pd_list[target_id].tid = target_id;
5062                                 instance->local_pd_list[target_id].driveType =
5063                                                 ci->host_device_list[i].scsi_type;
5064                                 instance->local_pd_list[target_id].driveState =
5065                                                 MR_PD_STATE_SYSTEM;
5066                                 if (megasas_dbg_lvl & LD_PD_DEBUG)
5067                                         dev_info(&instance->pdev->dev,
5068                                                  "Device %d: PD targetID: 0x%03x deviceType:0x%x\n",
5069                                                  i, target_id, ci->host_device_list[i].scsi_type);
5070                         } else {
5071                                 instance->ld_ids[target_id] = target_id;
5072                                 if (megasas_dbg_lvl & LD_PD_DEBUG)
5073                                         dev_info(&instance->pdev->dev,
5074                                                  "Device %d: LD targetID: 0x%03x\n",
5075                                                  i, target_id);
5076                         }
5077                 }
5078
5079                 memcpy(instance->pd_list, instance->local_pd_list,
5080                        sizeof(instance->pd_list));
5081                 break;
5082
5083         case DCMD_TIMEOUT:
5084                 switch (dcmd_timeout_ocr_possible(instance)) {
5085                 case INITIATE_OCR:
5086                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5087                         mutex_unlock(&instance->reset_mutex);
5088                         megasas_reset_fusion(instance->host,
5089                                 MFI_IO_TIMEOUT_OCR);
5090                         mutex_lock(&instance->reset_mutex);
5091                         break;
5092                 case KILL_ADAPTER:
5093                         megaraid_sas_kill_hba(instance);
5094                         break;
5095                 case IGNORE_TIMEOUT:
5096                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5097                                  __func__, __LINE__);
5098                         break;
5099                 }
5100                 break;
5101         case DCMD_FAILED:
5102                 dev_err(&instance->pdev->dev,
5103                         "%s: MR_DCMD_CTRL_DEVICE_LIST_GET failed\n",
5104                         __func__);
5105                 break;
5106         }
5107
5108         if (ret != DCMD_TIMEOUT)
5109                 megasas_return_cmd(instance, cmd);
5110
5111         return ret;
5112 }
5113
5114 /*
5115  * megasas_update_ext_vd_details : Update details w.r.t Extended VD
5116  * instance                      : Controller's instance
5117 */
5118 static void megasas_update_ext_vd_details(struct megasas_instance *instance)
5119 {
5120         struct fusion_context *fusion;
5121         u32 ventura_map_sz = 0;
5122
5123         fusion = instance->ctrl_context;
5124         /* For MFI based controllers return dummy success */
5125         if (!fusion)
5126                 return;
5127
5128         instance->supportmax256vd =
5129                 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs;
5130         /* Below is additional check to address future FW enhancement */
5131         if (instance->ctrl_info_buf->max_lds > 64)
5132                 instance->supportmax256vd = 1;
5133
5134         instance->drv_supported_vd_count = MEGASAS_MAX_LD_CHANNELS
5135                                         * MEGASAS_MAX_DEV_PER_CHANNEL;
5136         instance->drv_supported_pd_count = MEGASAS_MAX_PD_CHANNELS
5137                                         * MEGASAS_MAX_DEV_PER_CHANNEL;
5138         if (instance->supportmax256vd) {
5139                 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES_EXT;
5140                 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
5141         } else {
5142                 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
5143                 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
5144         }
5145
5146         dev_info(&instance->pdev->dev,
5147                 "FW provided supportMaxExtLDs: %d\tmax_lds: %d\n",
5148                 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs ? 1 : 0,
5149                 instance->ctrl_info_buf->max_lds);
5150
5151         if (instance->max_raid_mapsize) {
5152                 ventura_map_sz = instance->max_raid_mapsize *
5153                                                 MR_MIN_MAP_SIZE; /* 64k */
5154                 fusion->current_map_sz = ventura_map_sz;
5155                 fusion->max_map_sz = ventura_map_sz;
5156         } else {
5157                 fusion->old_map_sz =  sizeof(struct MR_FW_RAID_MAP) +
5158                                         (sizeof(struct MR_LD_SPAN_MAP) *
5159                                         (instance->fw_supported_vd_count - 1));
5160                 fusion->new_map_sz =  sizeof(struct MR_FW_RAID_MAP_EXT);
5161
5162                 fusion->max_map_sz =
5163                         max(fusion->old_map_sz, fusion->new_map_sz);
5164
5165                 if (instance->supportmax256vd)
5166                         fusion->current_map_sz = fusion->new_map_sz;
5167                 else
5168                         fusion->current_map_sz = fusion->old_map_sz;
5169         }
5170         /* irrespective of FW raid maps, driver raid map is constant */
5171         fusion->drv_map_sz = sizeof(struct MR_DRV_RAID_MAP_ALL);
5172 }
5173
5174 /*
5175  * dcmd.opcode                - MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES
5176  * dcmd.hdr.length            - number of bytes to read
5177  * dcmd.sge                   - Ptr to MR_SNAPDUMP_PROPERTIES
5178  * Desc:                         Fill in snapdump properties
5179  * Status:                       MFI_STAT_OK- Command successful
5180  */
5181 void megasas_get_snapdump_properties(struct megasas_instance *instance)
5182 {
5183         int ret = 0;
5184         struct megasas_cmd *cmd;
5185         struct megasas_dcmd_frame *dcmd;
5186         struct MR_SNAPDUMP_PROPERTIES *ci;
5187         dma_addr_t ci_h = 0;
5188
5189         ci = instance->snapdump_prop;
5190         ci_h = instance->snapdump_prop_h;
5191
5192         if (!ci)
5193                 return;
5194
5195         cmd = megasas_get_cmd(instance);
5196
5197         if (!cmd) {
5198                 dev_dbg(&instance->pdev->dev, "Failed to get a free cmd\n");
5199                 return;
5200         }
5201
5202         dcmd = &cmd->frame->dcmd;
5203
5204         memset(ci, 0, sizeof(*ci));
5205         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5206
5207         dcmd->cmd = MFI_CMD_DCMD;
5208         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5209         dcmd->sge_count = 1;
5210         dcmd->flags = MFI_FRAME_DIR_READ;
5211         dcmd->timeout = 0;
5212         dcmd->pad_0 = 0;
5213         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_SNAPDUMP_PROPERTIES));
5214         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES);
5215
5216         megasas_set_dma_settings(instance, dcmd, ci_h,
5217                                  sizeof(struct MR_SNAPDUMP_PROPERTIES));
5218
5219         if (!instance->mask_interrupts) {
5220                 ret = megasas_issue_blocked_cmd(instance, cmd,
5221                                                 MFI_IO_TIMEOUT_SECS);
5222         } else {
5223                 ret = megasas_issue_polled(instance, cmd);
5224                 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5225         }
5226
5227         switch (ret) {
5228         case DCMD_SUCCESS:
5229                 instance->snapdump_wait_time =
5230                         min_t(u8, ci->trigger_min_num_sec_before_ocr,
5231                                 MEGASAS_MAX_SNAP_DUMP_WAIT_TIME);
5232                 break;
5233
5234         case DCMD_TIMEOUT:
5235                 switch (dcmd_timeout_ocr_possible(instance)) {
5236                 case INITIATE_OCR:
5237                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5238                         mutex_unlock(&instance->reset_mutex);
5239                         megasas_reset_fusion(instance->host,
5240                                 MFI_IO_TIMEOUT_OCR);
5241                         mutex_lock(&instance->reset_mutex);
5242                         break;
5243                 case KILL_ADAPTER:
5244                         megaraid_sas_kill_hba(instance);
5245                         break;
5246                 case IGNORE_TIMEOUT:
5247                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5248                                 __func__, __LINE__);
5249                         break;
5250                 }
5251         }
5252
5253         if (ret != DCMD_TIMEOUT)
5254                 megasas_return_cmd(instance, cmd);
5255 }
5256
5257 /**
5258  * megasas_get_ctrl_info -      Returns FW's controller structure
5259  * @instance:                           Adapter soft state
5260  *
5261  * Issues an internal command (DCMD) to get the FW's controller structure.
5262  * This information is mainly used to find out the maximum IO transfer per
5263  * command supported by the FW.
5264  */
5265 int
5266 megasas_get_ctrl_info(struct megasas_instance *instance)
5267 {
5268         int ret = 0;
5269         struct megasas_cmd *cmd;
5270         struct megasas_dcmd_frame *dcmd;
5271         struct megasas_ctrl_info *ci;
5272         dma_addr_t ci_h = 0;
5273
5274         ci = instance->ctrl_info_buf;
5275         ci_h = instance->ctrl_info_buf_h;
5276
5277         cmd = megasas_get_cmd(instance);
5278
5279         if (!cmd) {
5280                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a free cmd\n");
5281                 return -ENOMEM;
5282         }
5283
5284         dcmd = &cmd->frame->dcmd;
5285
5286         memset(ci, 0, sizeof(*ci));
5287         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5288
5289         dcmd->cmd = MFI_CMD_DCMD;
5290         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5291         dcmd->sge_count = 1;
5292         dcmd->flags = MFI_FRAME_DIR_READ;
5293         dcmd->timeout = 0;
5294         dcmd->pad_0 = 0;
5295         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info));
5296         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO);
5297         dcmd->mbox.b[0] = 1;
5298
5299         megasas_set_dma_settings(instance, dcmd, ci_h,
5300                                  sizeof(struct megasas_ctrl_info));
5301
5302         if ((instance->adapter_type != MFI_SERIES) &&
5303             !instance->mask_interrupts) {
5304                 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
5305         } else {
5306                 ret = megasas_issue_polled(instance, cmd);
5307                 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5308         }
5309
5310         switch (ret) {
5311         case DCMD_SUCCESS:
5312                 /* Save required controller information in
5313                  * CPU endianness format.
5314                  */
5315                 le32_to_cpus((u32 *)&ci->properties.OnOffProperties);
5316                 le16_to_cpus((u16 *)&ci->properties.on_off_properties2);
5317                 le32_to_cpus((u32 *)&ci->adapterOperations2);
5318                 le32_to_cpus((u32 *)&ci->adapterOperations3);
5319                 le16_to_cpus((u16 *)&ci->adapter_operations4);
5320                 le32_to_cpus((u32 *)&ci->adapter_operations5);
5321
5322                 /* Update the latest Ext VD info.
5323                  * From Init path, store current firmware details.
5324                  * From OCR path, detect any firmware properties changes.
5325                  * in case of Firmware upgrade without system reboot.
5326                  */
5327                 megasas_update_ext_vd_details(instance);
5328                 instance->support_seqnum_jbod_fp =
5329                         ci->adapterOperations3.useSeqNumJbodFP;
5330                 instance->support_morethan256jbod =
5331                         ci->adapter_operations4.support_pd_map_target_id;
5332                 instance->support_nvme_passthru =
5333                         ci->adapter_operations4.support_nvme_passthru;
5334                 instance->support_pci_lane_margining =
5335                         ci->adapter_operations5.support_pci_lane_margining;
5336                 instance->task_abort_tmo = ci->TaskAbortTO;
5337                 instance->max_reset_tmo = ci->MaxResetTO;
5338
5339                 /*Check whether controller is iMR or MR */
5340                 instance->is_imr = (ci->memory_size ? 0 : 1);
5341
5342                 instance->snapdump_wait_time =
5343                         (ci->properties.on_off_properties2.enable_snap_dump ?
5344                          MEGASAS_DEFAULT_SNAP_DUMP_WAIT_TIME : 0);
5345
5346                 instance->enable_fw_dev_list =
5347                         ci->properties.on_off_properties2.enable_fw_dev_list;
5348
5349                 dev_info(&instance->pdev->dev,
5350                         "controller type\t: %s(%dMB)\n",
5351                         instance->is_imr ? "iMR" : "MR",
5352                         le16_to_cpu(ci->memory_size));
5353
5354                 instance->disableOnlineCtrlReset =
5355                         ci->properties.OnOffProperties.disableOnlineCtrlReset;
5356                 instance->secure_jbod_support =
5357                         ci->adapterOperations3.supportSecurityonJBOD;
5358                 dev_info(&instance->pdev->dev, "Online Controller Reset(OCR)\t: %s\n",
5359                         instance->disableOnlineCtrlReset ? "Disabled" : "Enabled");
5360                 dev_info(&instance->pdev->dev, "Secure JBOD support\t: %s\n",
5361                         instance->secure_jbod_support ? "Yes" : "No");
5362                 dev_info(&instance->pdev->dev, "NVMe passthru support\t: %s\n",
5363                          instance->support_nvme_passthru ? "Yes" : "No");
5364                 dev_info(&instance->pdev->dev,
5365                          "FW provided TM TaskAbort/Reset timeout\t: %d secs/%d secs\n",
5366                          instance->task_abort_tmo, instance->max_reset_tmo);
5367                 dev_info(&instance->pdev->dev, "JBOD sequence map support\t: %s\n",
5368                          instance->support_seqnum_jbod_fp ? "Yes" : "No");
5369                 dev_info(&instance->pdev->dev, "PCI Lane Margining support\t: %s\n",
5370                          instance->support_pci_lane_margining ? "Yes" : "No");
5371
5372                 break;
5373
5374         case DCMD_TIMEOUT:
5375                 switch (dcmd_timeout_ocr_possible(instance)) {
5376                 case INITIATE_OCR:
5377                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5378                         mutex_unlock(&instance->reset_mutex);
5379                         megasas_reset_fusion(instance->host,
5380                                 MFI_IO_TIMEOUT_OCR);
5381                         mutex_lock(&instance->reset_mutex);
5382                         break;
5383                 case KILL_ADAPTER:
5384                         megaraid_sas_kill_hba(instance);
5385                         break;
5386                 case IGNORE_TIMEOUT:
5387                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5388                                 __func__, __LINE__);
5389                         break;
5390                 }
5391                 break;
5392         case DCMD_FAILED:
5393                 megaraid_sas_kill_hba(instance);
5394                 break;
5395
5396         }
5397
5398         if (ret != DCMD_TIMEOUT)
5399                 megasas_return_cmd(instance, cmd);
5400
5401         return ret;
5402 }
5403
5404 /*
5405  * megasas_set_crash_dump_params -      Sends address of crash dump DMA buffer
5406  *                                      to firmware
5407  *
5408  * @instance:                           Adapter soft state
5409  * @crash_buf_state             -       tell FW to turn ON/OFF crash dump feature
5410                                         MR_CRASH_BUF_TURN_OFF = 0
5411                                         MR_CRASH_BUF_TURN_ON = 1
5412  * @return 0 on success non-zero on failure.
5413  * Issues an internal command (DCMD) to set parameters for crash dump feature.
5414  * Driver will send address of crash dump DMA buffer and set mbox to tell FW
5415  * that driver supports crash dump feature. This DCMD will be sent only if
5416  * crash dump feature is supported by the FW.
5417  *
5418  */
5419 int megasas_set_crash_dump_params(struct megasas_instance *instance,
5420         u8 crash_buf_state)
5421 {
5422         int ret = 0;
5423         struct megasas_cmd *cmd;
5424         struct megasas_dcmd_frame *dcmd;
5425
5426         cmd = megasas_get_cmd(instance);
5427
5428         if (!cmd) {
5429                 dev_err(&instance->pdev->dev, "Failed to get a free cmd\n");
5430                 return -ENOMEM;
5431         }
5432
5433
5434         dcmd = &cmd->frame->dcmd;
5435
5436         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5437         dcmd->mbox.b[0] = crash_buf_state;
5438         dcmd->cmd = MFI_CMD_DCMD;
5439         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5440         dcmd->sge_count = 1;
5441         dcmd->flags = MFI_FRAME_DIR_NONE;
5442         dcmd->timeout = 0;
5443         dcmd->pad_0 = 0;
5444         dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE);
5445         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS);
5446
5447         megasas_set_dma_settings(instance, dcmd, instance->crash_dump_h,
5448                                  CRASH_DMA_BUF_SIZE);
5449
5450         if ((instance->adapter_type != MFI_SERIES) &&
5451             !instance->mask_interrupts)
5452                 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
5453         else
5454                 ret = megasas_issue_polled(instance, cmd);
5455
5456         if (ret == DCMD_TIMEOUT) {
5457                 switch (dcmd_timeout_ocr_possible(instance)) {
5458                 case INITIATE_OCR:
5459                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5460                         megasas_reset_fusion(instance->host,
5461                                         MFI_IO_TIMEOUT_OCR);
5462                         break;
5463                 case KILL_ADAPTER:
5464                         megaraid_sas_kill_hba(instance);
5465                         break;
5466                 case IGNORE_TIMEOUT:
5467                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5468                                 __func__, __LINE__);
5469                         break;
5470                 }
5471         } else
5472                 megasas_return_cmd(instance, cmd);
5473
5474         return ret;
5475 }
5476
5477 /**
5478  * megasas_issue_init_mfi -     Initializes the FW
5479  * @instance:           Adapter soft state
5480  *
5481  * Issues the INIT MFI cmd
5482  */
5483 static int
5484 megasas_issue_init_mfi(struct megasas_instance *instance)
5485 {
5486         __le32 context;
5487         struct megasas_cmd *cmd;
5488         struct megasas_init_frame *init_frame;
5489         struct megasas_init_queue_info *initq_info;
5490         dma_addr_t init_frame_h;
5491         dma_addr_t initq_info_h;
5492
5493         /*
5494          * Prepare a init frame. Note the init frame points to queue info
5495          * structure. Each frame has SGL allocated after first 64 bytes. For
5496          * this frame - since we don't need any SGL - we use SGL's space as
5497          * queue info structure
5498          *
5499          * We will not get a NULL command below. We just created the pool.
5500          */
5501         cmd = megasas_get_cmd(instance);
5502
5503         init_frame = (struct megasas_init_frame *)cmd->frame;
5504         initq_info = (struct megasas_init_queue_info *)
5505                 ((unsigned long)init_frame + 64);
5506
5507         init_frame_h = cmd->frame_phys_addr;
5508         initq_info_h = init_frame_h + 64;
5509
5510         context = init_frame->context;
5511         memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
5512         memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
5513         init_frame->context = context;
5514
5515         initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1);
5516         initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h);
5517
5518         initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h);
5519         initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h);
5520
5521         init_frame->cmd = MFI_CMD_INIT;
5522         init_frame->cmd_status = MFI_STAT_INVALID_STATUS;
5523         init_frame->queue_info_new_phys_addr_lo =
5524                 cpu_to_le32(lower_32_bits(initq_info_h));
5525         init_frame->queue_info_new_phys_addr_hi =
5526                 cpu_to_le32(upper_32_bits(initq_info_h));
5527
5528         init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info));
5529
5530         /*
5531          * disable the intr before firing the init frame to FW
5532          */
5533         instance->instancet->disable_intr(instance);
5534
5535         /*
5536          * Issue the init frame in polled mode
5537          */
5538
5539         if (megasas_issue_polled(instance, cmd)) {
5540                 dev_err(&instance->pdev->dev, "Failed to init firmware\n");
5541                 megasas_return_cmd(instance, cmd);
5542                 goto fail_fw_init;
5543         }
5544
5545         megasas_return_cmd(instance, cmd);
5546
5547         return 0;
5548
5549 fail_fw_init:
5550         return -EINVAL;
5551 }
5552
5553 static u32
5554 megasas_init_adapter_mfi(struct megasas_instance *instance)
5555 {
5556         u32 context_sz;
5557         u32 reply_q_sz;
5558
5559         /*
5560          * Get various operational parameters from status register
5561          */
5562         instance->max_fw_cmds = instance->instancet->read_fw_status_reg(instance) & 0x00FFFF;
5563         /*
5564          * Reduce the max supported cmds by 1. This is to ensure that the
5565          * reply_q_sz (1 more than the max cmd that driver may send)
5566          * does not exceed max cmds that the FW can support
5567          */
5568         instance->max_fw_cmds = instance->max_fw_cmds-1;
5569         instance->max_mfi_cmds = instance->max_fw_cmds;
5570         instance->max_num_sge = (instance->instancet->read_fw_status_reg(instance) & 0xFF0000) >>
5571                                         0x10;
5572         /*
5573          * For MFI skinny adapters, MEGASAS_SKINNY_INT_CMDS commands
5574          * are reserved for IOCTL + driver's internal DCMDs.
5575          */
5576         if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
5577                 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
5578                 instance->max_scsi_cmds = (instance->max_fw_cmds -
5579                         MEGASAS_SKINNY_INT_CMDS);
5580                 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
5581         } else {
5582                 instance->max_scsi_cmds = (instance->max_fw_cmds -
5583                         MEGASAS_INT_CMDS);
5584                 sema_init(&instance->ioctl_sem, (MEGASAS_MFI_IOCTL_CMDS));
5585         }
5586
5587         instance->cur_can_queue = instance->max_scsi_cmds;
5588         /*
5589          * Create a pool of commands
5590          */
5591         if (megasas_alloc_cmds(instance))
5592                 goto fail_alloc_cmds;
5593
5594         /*
5595          * Allocate memory for reply queue. Length of reply queue should
5596          * be _one_ more than the maximum commands handled by the firmware.
5597          *
5598          * Note: When FW completes commands, it places corresponding contex
5599          * values in this circular reply queue. This circular queue is a fairly
5600          * typical producer-consumer queue. FW is the producer (of completed
5601          * commands) and the driver is the consumer.
5602          */
5603         context_sz = sizeof(u32);
5604         reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
5605
5606         instance->reply_queue = dma_alloc_coherent(&instance->pdev->dev,
5607                         reply_q_sz, &instance->reply_queue_h, GFP_KERNEL);
5608
5609         if (!instance->reply_queue) {
5610                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Out of DMA mem for reply queue\n");
5611                 goto fail_reply_queue;
5612         }
5613
5614         if (megasas_issue_init_mfi(instance))
5615                 goto fail_fw_init;
5616
5617         if (megasas_get_ctrl_info(instance)) {
5618                 dev_err(&instance->pdev->dev, "(%d): Could get controller info "
5619                         "Fail from %s %d\n", instance->unique_id,
5620                         __func__, __LINE__);
5621                 goto fail_fw_init;
5622         }
5623
5624         instance->fw_support_ieee = 0;
5625         instance->fw_support_ieee =
5626                 (instance->instancet->read_fw_status_reg(instance) &
5627                 0x04000000);
5628
5629         dev_notice(&instance->pdev->dev, "megasas_init_mfi: fw_support_ieee=%d",
5630                         instance->fw_support_ieee);
5631
5632         if (instance->fw_support_ieee)
5633                 instance->flag_ieee = 1;
5634
5635         return 0;
5636
5637 fail_fw_init:
5638
5639         dma_free_coherent(&instance->pdev->dev, reply_q_sz,
5640                             instance->reply_queue, instance->reply_queue_h);
5641 fail_reply_queue:
5642         megasas_free_cmds(instance);
5643
5644 fail_alloc_cmds:
5645         return 1;
5646 }
5647
5648 static
5649 void megasas_setup_irq_poll(struct megasas_instance *instance)
5650 {
5651         struct megasas_irq_context *irq_ctx;
5652         u32 count, i;
5653
5654         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
5655
5656         /* Initialize IRQ poll */
5657         for (i = 0; i < count; i++) {
5658                 irq_ctx = &instance->irq_context[i];
5659                 irq_ctx->os_irq = pci_irq_vector(instance->pdev, i);
5660                 irq_ctx->irq_poll_scheduled = false;
5661                 irq_poll_init(&irq_ctx->irqpoll,
5662                               instance->threshold_reply_count,
5663                               megasas_irqpoll);
5664         }
5665 }
5666
5667 /*
5668  * megasas_setup_irqs_ioapic -          register legacy interrupts.
5669  * @instance:                           Adapter soft state
5670  *
5671  * Do not enable interrupt, only setup ISRs.
5672  *
5673  * Return 0 on success.
5674  */
5675 static int
5676 megasas_setup_irqs_ioapic(struct megasas_instance *instance)
5677 {
5678         struct pci_dev *pdev;
5679
5680         pdev = instance->pdev;
5681         instance->irq_context[0].instance = instance;
5682         instance->irq_context[0].MSIxIndex = 0;
5683         snprintf(instance->irq_context->name, MEGASAS_MSIX_NAME_LEN, "%s%u",
5684                 "megasas", instance->host->host_no);
5685         if (request_irq(pci_irq_vector(pdev, 0),
5686                         instance->instancet->service_isr, IRQF_SHARED,
5687                         instance->irq_context->name, &instance->irq_context[0])) {
5688                 dev_err(&instance->pdev->dev,
5689                                 "Failed to register IRQ from %s %d\n",
5690                                 __func__, __LINE__);
5691                 return -1;
5692         }
5693         instance->perf_mode = MR_LATENCY_PERF_MODE;
5694         instance->low_latency_index_start = 0;
5695         return 0;
5696 }
5697
5698 /**
5699  * megasas_setup_irqs_msix -            register MSI-x interrupts.
5700  * @instance:                           Adapter soft state
5701  * @is_probe:                           Driver probe check
5702  *
5703  * Do not enable interrupt, only setup ISRs.
5704  *
5705  * Return 0 on success.
5706  */
5707 static int
5708 megasas_setup_irqs_msix(struct megasas_instance *instance, u8 is_probe)
5709 {
5710         int i, j;
5711         struct pci_dev *pdev;
5712
5713         pdev = instance->pdev;
5714
5715         /* Try MSI-x */
5716         for (i = 0; i < instance->msix_vectors; i++) {
5717                 instance->irq_context[i].instance = instance;
5718                 instance->irq_context[i].MSIxIndex = i;
5719                 snprintf(instance->irq_context[i].name, MEGASAS_MSIX_NAME_LEN, "%s%u-msix%u",
5720                         "megasas", instance->host->host_no, i);
5721                 if (request_irq(pci_irq_vector(pdev, i),
5722                         instance->instancet->service_isr, 0, instance->irq_context[i].name,
5723                         &instance->irq_context[i])) {
5724                         dev_err(&instance->pdev->dev,
5725                                 "Failed to register IRQ for vector %d.\n", i);
5726                         for (j = 0; j < i; j++) {
5727                                 if (j < instance->low_latency_index_start)
5728                                         irq_set_affinity_hint(
5729                                                 pci_irq_vector(pdev, j), NULL);
5730                                 free_irq(pci_irq_vector(pdev, j),
5731                                          &instance->irq_context[j]);
5732                         }
5733                         /* Retry irq register for IO_APIC*/
5734                         instance->msix_vectors = 0;
5735                         instance->msix_load_balance = false;
5736                         if (is_probe) {
5737                                 pci_free_irq_vectors(instance->pdev);
5738                                 return megasas_setup_irqs_ioapic(instance);
5739                         } else {
5740                                 return -1;
5741                         }
5742                 }
5743         }
5744
5745         return 0;
5746 }
5747
5748 /*
5749  * megasas_destroy_irqs-                unregister interrupts.
5750  * @instance:                           Adapter soft state
5751  * return:                              void
5752  */
5753 static void
5754 megasas_destroy_irqs(struct megasas_instance *instance) {
5755
5756         int i;
5757         int count;
5758         struct megasas_irq_context *irq_ctx;
5759
5760         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
5761         if (instance->adapter_type != MFI_SERIES) {
5762                 for (i = 0; i < count; i++) {
5763                         irq_ctx = &instance->irq_context[i];
5764                         irq_poll_disable(&irq_ctx->irqpoll);
5765                 }
5766         }
5767
5768         if (instance->msix_vectors)
5769                 for (i = 0; i < instance->msix_vectors; i++) {
5770                         if (i < instance->low_latency_index_start)
5771                                 irq_set_affinity_hint(
5772                                     pci_irq_vector(instance->pdev, i), NULL);
5773                         free_irq(pci_irq_vector(instance->pdev, i),
5774                                  &instance->irq_context[i]);
5775                 }
5776         else
5777                 free_irq(pci_irq_vector(instance->pdev, 0),
5778                          &instance->irq_context[0]);
5779 }
5780
5781 /**
5782  * megasas_setup_jbod_map -     setup jbod map for FP seq_number.
5783  * @instance:                           Adapter soft state
5784  *
5785  * Return 0 on success.
5786  */
5787 void
5788 megasas_setup_jbod_map(struct megasas_instance *instance)
5789 {
5790         int i;
5791         struct fusion_context *fusion = instance->ctrl_context;
5792         u32 pd_seq_map_sz;
5793
5794         pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
5795                 (sizeof(struct MR_PD_CFG_SEQ) * (MAX_PHYSICAL_DEVICES - 1));
5796
5797         instance->use_seqnum_jbod_fp =
5798                 instance->support_seqnum_jbod_fp;
5799         if (reset_devices || !fusion ||
5800                 !instance->support_seqnum_jbod_fp) {
5801                 dev_info(&instance->pdev->dev,
5802                         "JBOD sequence map is disabled %s %d\n",
5803                         __func__, __LINE__);
5804                 instance->use_seqnum_jbod_fp = false;
5805                 return;
5806         }
5807
5808         if (fusion->pd_seq_sync[0])
5809                 goto skip_alloc;
5810
5811         for (i = 0; i < JBOD_MAPS_COUNT; i++) {
5812                 fusion->pd_seq_sync[i] = dma_alloc_coherent
5813                         (&instance->pdev->dev, pd_seq_map_sz,
5814                         &fusion->pd_seq_phys[i], GFP_KERNEL);
5815                 if (!fusion->pd_seq_sync[i]) {
5816                         dev_err(&instance->pdev->dev,
5817                                 "Failed to allocate memory from %s %d\n",
5818                                 __func__, __LINE__);
5819                         if (i == 1) {
5820                                 dma_free_coherent(&instance->pdev->dev,
5821                                         pd_seq_map_sz, fusion->pd_seq_sync[0],
5822                                         fusion->pd_seq_phys[0]);
5823                                 fusion->pd_seq_sync[0] = NULL;
5824                         }
5825                         instance->use_seqnum_jbod_fp = false;
5826                         return;
5827                 }
5828         }
5829
5830 skip_alloc:
5831         if (!megasas_sync_pd_seq_num(instance, false) &&
5832                 !megasas_sync_pd_seq_num(instance, true))
5833                 instance->use_seqnum_jbod_fp = true;
5834         else
5835                 instance->use_seqnum_jbod_fp = false;
5836 }
5837
5838 static void megasas_setup_reply_map(struct megasas_instance *instance)
5839 {
5840         const struct cpumask *mask;
5841         unsigned int queue, cpu, low_latency_index_start;
5842
5843         low_latency_index_start = instance->low_latency_index_start;
5844
5845         for (queue = low_latency_index_start; queue < instance->msix_vectors; queue++) {
5846                 mask = pci_irq_get_affinity(instance->pdev, queue);
5847                 if (!mask)
5848                         goto fallback;
5849
5850                 for_each_cpu(cpu, mask)
5851                         instance->reply_map[cpu] = queue;
5852         }
5853         return;
5854
5855 fallback:
5856         queue = low_latency_index_start;
5857         for_each_possible_cpu(cpu) {
5858                 instance->reply_map[cpu] = queue;
5859                 if (queue == (instance->msix_vectors - 1))
5860                         queue = low_latency_index_start;
5861                 else
5862                         queue++;
5863         }
5864 }
5865
5866 /**
5867  * megasas_get_device_list -    Get the PD and LD device list from FW.
5868  * @instance:                   Adapter soft state
5869  * @return:                     Success or failure
5870  *
5871  * Issue DCMDs to Firmware to get the PD and LD list.
5872  * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination
5873  * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list.
5874  */
5875 static
5876 int megasas_get_device_list(struct megasas_instance *instance)
5877 {
5878         memset(instance->pd_list, 0,
5879                (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)));
5880         memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
5881
5882         if (instance->enable_fw_dev_list) {
5883                 if (megasas_host_device_list_query(instance, true))
5884                         return FAILED;
5885         } else {
5886                 if (megasas_get_pd_list(instance) < 0) {
5887                         dev_err(&instance->pdev->dev, "failed to get PD list\n");
5888                         return FAILED;
5889                 }
5890
5891                 if (megasas_ld_list_query(instance,
5892                                           MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) {
5893                         dev_err(&instance->pdev->dev, "failed to get LD list\n");
5894                         return FAILED;
5895                 }
5896         }
5897
5898         return SUCCESS;
5899 }
5900
5901 /**
5902  * megasas_set_high_iops_queue_affinity_hint -  Set affinity hint for high IOPS queues
5903  * @instance:                                   Adapter soft state
5904  * return:                                      void
5905  */
5906 static inline void
5907 megasas_set_high_iops_queue_affinity_hint(struct megasas_instance *instance)
5908 {
5909         int i;
5910         int local_numa_node;
5911
5912         if (instance->perf_mode == MR_BALANCED_PERF_MODE) {
5913                 local_numa_node = dev_to_node(&instance->pdev->dev);
5914
5915                 for (i = 0; i < instance->low_latency_index_start; i++)
5916                         irq_set_affinity_hint(pci_irq_vector(instance->pdev, i),
5917                                 cpumask_of_node(local_numa_node));
5918         }
5919 }
5920
5921 static int
5922 __megasas_alloc_irq_vectors(struct megasas_instance *instance)
5923 {
5924         int i, irq_flags;
5925         struct irq_affinity desc = { .pre_vectors = instance->low_latency_index_start };
5926         struct irq_affinity *descp = &desc;
5927
5928         irq_flags = PCI_IRQ_MSIX;
5929
5930         if (instance->smp_affinity_enable)
5931                 irq_flags |= PCI_IRQ_AFFINITY | PCI_IRQ_ALL_TYPES;
5932         else
5933                 descp = NULL;
5934
5935         /* Do not allocate msix vectors for poll_queues.
5936          * msix_vectors is always within a range of FW supported reply queue.
5937          */
5938         i = pci_alloc_irq_vectors_affinity(instance->pdev,
5939                 instance->low_latency_index_start,
5940                 instance->msix_vectors - instance->iopoll_q_count, irq_flags, descp);
5941
5942         return i;
5943 }
5944
5945 /**
5946  * megasas_alloc_irq_vectors -  Allocate IRQ vectors/enable MSI-x vectors
5947  * @instance:                   Adapter soft state
5948  * return:                      void
5949  */
5950 static void
5951 megasas_alloc_irq_vectors(struct megasas_instance *instance)
5952 {
5953         int i;
5954         unsigned int num_msix_req;
5955
5956         instance->iopoll_q_count = 0;
5957         if ((instance->adapter_type != MFI_SERIES) &&
5958                 poll_queues) {
5959
5960                 instance->perf_mode = MR_LATENCY_PERF_MODE;
5961                 instance->low_latency_index_start = 1;
5962
5963                 /* reserve for default and non-mananged pre-vector. */
5964                 if (instance->msix_vectors > (poll_queues + 2))
5965                         instance->iopoll_q_count = poll_queues;
5966                 else
5967                         instance->iopoll_q_count = 0;
5968
5969                 num_msix_req = num_online_cpus() + instance->low_latency_index_start;
5970                 instance->msix_vectors = min(num_msix_req,
5971                                 instance->msix_vectors);
5972
5973         }
5974
5975         i = __megasas_alloc_irq_vectors(instance);
5976
5977         if (((instance->perf_mode == MR_BALANCED_PERF_MODE)
5978                 || instance->iopoll_q_count) &&
5979             (i != (instance->msix_vectors - instance->iopoll_q_count))) {
5980                 if (instance->msix_vectors)
5981                         pci_free_irq_vectors(instance->pdev);
5982                 /* Disable Balanced IOPS mode and try realloc vectors */
5983                 instance->perf_mode = MR_LATENCY_PERF_MODE;
5984                 instance->low_latency_index_start = 1;
5985                 num_msix_req = num_online_cpus() + instance->low_latency_index_start;
5986
5987                 instance->msix_vectors = min(num_msix_req,
5988                                 instance->msix_vectors);
5989
5990                 instance->iopoll_q_count = 0;
5991                 i = __megasas_alloc_irq_vectors(instance);
5992
5993         }
5994
5995         dev_info(&instance->pdev->dev,
5996                 "requested/available msix %d/%d poll_queue %d\n",
5997                         instance->msix_vectors - instance->iopoll_q_count,
5998                         i, instance->iopoll_q_count);
5999
6000         if (i > 0)
6001                 instance->msix_vectors = i;
6002         else
6003                 instance->msix_vectors = 0;
6004
6005         if (instance->smp_affinity_enable)
6006                 megasas_set_high_iops_queue_affinity_hint(instance);
6007 }
6008
6009 /**
6010  * megasas_init_fw -    Initializes the FW
6011  * @instance:           Adapter soft state
6012  *
6013  * This is the main function for initializing firmware
6014  */
6015
6016 static int megasas_init_fw(struct megasas_instance *instance)
6017 {
6018         u32 max_sectors_1;
6019         u32 max_sectors_2, tmp_sectors, msix_enable;
6020         u32 scratch_pad_1, scratch_pad_2, scratch_pad_3, status_reg;
6021         resource_size_t base_addr;
6022         void *base_addr_phys;
6023         struct megasas_ctrl_info *ctrl_info = NULL;
6024         unsigned long bar_list;
6025         int i, j, loop;
6026         struct IOV_111 *iovPtr;
6027         struct fusion_context *fusion;
6028         bool intr_coalescing;
6029         unsigned int num_msix_req;
6030         u16 lnksta, speed;
6031
6032         fusion = instance->ctrl_context;
6033
6034         /* Find first memory bar */
6035         bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
6036         instance->bar = find_first_bit(&bar_list, BITS_PER_LONG);
6037         if (pci_request_selected_regions(instance->pdev, 1<<instance->bar,
6038                                          "megasas: LSI")) {
6039                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "IO memory region busy!\n");
6040                 return -EBUSY;
6041         }
6042
6043         base_addr = pci_resource_start(instance->pdev, instance->bar);
6044         instance->reg_set = ioremap(base_addr, 8192);
6045
6046         if (!instance->reg_set) {
6047                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to map IO mem\n");
6048                 goto fail_ioremap;
6049         }
6050
6051         base_addr_phys = &base_addr;
6052         dev_printk(KERN_DEBUG, &instance->pdev->dev,
6053                    "BAR:0x%lx  BAR's base_addr(phys):%pa  mapped virt_addr:0x%p\n",
6054                    instance->bar, base_addr_phys, instance->reg_set);
6055
6056         if (instance->adapter_type != MFI_SERIES)
6057                 instance->instancet = &megasas_instance_template_fusion;
6058         else {
6059                 switch (instance->pdev->device) {
6060                 case PCI_DEVICE_ID_LSI_SAS1078R:
6061                 case PCI_DEVICE_ID_LSI_SAS1078DE:
6062                         instance->instancet = &megasas_instance_template_ppc;
6063                         break;
6064                 case PCI_DEVICE_ID_LSI_SAS1078GEN2:
6065                 case PCI_DEVICE_ID_LSI_SAS0079GEN2:
6066                         instance->instancet = &megasas_instance_template_gen2;
6067                         break;
6068                 case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
6069                 case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
6070                         instance->instancet = &megasas_instance_template_skinny;
6071                         break;
6072                 case PCI_DEVICE_ID_LSI_SAS1064R:
6073                 case PCI_DEVICE_ID_DELL_PERC5:
6074                 default:
6075                         instance->instancet = &megasas_instance_template_xscale;
6076                         instance->pd_list_not_supported = 1;
6077                         break;
6078                 }
6079         }
6080
6081         if (megasas_transition_to_ready(instance, 0)) {
6082                 dev_info(&instance->pdev->dev,
6083                          "Failed to transition controller to ready from %s!\n",
6084                          __func__);
6085                 if (instance->adapter_type != MFI_SERIES) {
6086                         status_reg = instance->instancet->read_fw_status_reg(
6087                                         instance);
6088                         if (status_reg & MFI_RESET_ADAPTER) {
6089                                 if (megasas_adp_reset_wait_for_ready
6090                                         (instance, true, 0) == FAILED)
6091                                         goto fail_ready_state;
6092                         } else {
6093                                 goto fail_ready_state;
6094                         }
6095                 } else {
6096                         atomic_set(&instance->fw_reset_no_pci_access, 1);
6097                         instance->instancet->adp_reset
6098                                 (instance, instance->reg_set);
6099                         atomic_set(&instance->fw_reset_no_pci_access, 0);
6100
6101                         /*waiting for about 30 second before retry*/
6102                         ssleep(30);
6103
6104                         if (megasas_transition_to_ready(instance, 0))
6105                                 goto fail_ready_state;
6106                 }
6107
6108                 dev_info(&instance->pdev->dev,
6109                          "FW restarted successfully from %s!\n",
6110                          __func__);
6111         }
6112
6113         megasas_init_ctrl_params(instance);
6114
6115         if (megasas_set_dma_mask(instance))
6116                 goto fail_ready_state;
6117
6118         if (megasas_alloc_ctrl_mem(instance))
6119                 goto fail_alloc_dma_buf;
6120
6121         if (megasas_alloc_ctrl_dma_buffers(instance))
6122                 goto fail_alloc_dma_buf;
6123
6124         fusion = instance->ctrl_context;
6125
6126         if (instance->adapter_type >= VENTURA_SERIES) {
6127                 scratch_pad_2 =
6128                         megasas_readl(instance,
6129                                       &instance->reg_set->outbound_scratch_pad_2);
6130                 instance->max_raid_mapsize = ((scratch_pad_2 >>
6131                         MR_MAX_RAID_MAP_SIZE_OFFSET_SHIFT) &
6132                         MR_MAX_RAID_MAP_SIZE_MASK);
6133         }
6134
6135         instance->enable_sdev_max_qd = enable_sdev_max_qd;
6136
6137         switch (instance->adapter_type) {
6138         case VENTURA_SERIES:
6139                 fusion->pcie_bw_limitation = true;
6140                 break;
6141         case AERO_SERIES:
6142                 fusion->r56_div_offload = true;
6143                 break;
6144         default:
6145                 break;
6146         }
6147
6148         /* Check if MSI-X is supported while in ready state */
6149         msix_enable = (instance->instancet->read_fw_status_reg(instance) &
6150                        0x4000000) >> 0x1a;
6151         if (msix_enable && !msix_disable) {
6152
6153                 scratch_pad_1 = megasas_readl
6154                         (instance, &instance->reg_set->outbound_scratch_pad_1);
6155                 /* Check max MSI-X vectors */
6156                 if (fusion) {
6157                         if (instance->adapter_type == THUNDERBOLT_SERIES) {
6158                                 /* Thunderbolt Series*/
6159                                 instance->msix_vectors = (scratch_pad_1
6160                                         & MR_MAX_REPLY_QUEUES_OFFSET) + 1;
6161                         } else {
6162                                 instance->msix_vectors = ((scratch_pad_1
6163                                         & MR_MAX_REPLY_QUEUES_EXT_OFFSET)
6164                                         >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1;
6165
6166                                 /*
6167                                  * For Invader series, > 8 MSI-x vectors
6168                                  * supported by FW/HW implies combined
6169                                  * reply queue mode is enabled.
6170                                  * For Ventura series, > 16 MSI-x vectors
6171                                  * supported by FW/HW implies combined
6172                                  * reply queue mode is enabled.
6173                                  */
6174                                 switch (instance->adapter_type) {
6175                                 case INVADER_SERIES:
6176                                         if (instance->msix_vectors > 8)
6177                                                 instance->msix_combined = true;
6178                                         break;
6179                                 case AERO_SERIES:
6180                                 case VENTURA_SERIES:
6181                                         if (instance->msix_vectors > 16)
6182                                                 instance->msix_combined = true;
6183                                         break;
6184                                 }
6185
6186                                 if (rdpq_enable)
6187                                         instance->is_rdpq = (scratch_pad_1 & MR_RDPQ_MODE_OFFSET) ?
6188                                                                 1 : 0;
6189
6190                                 if (instance->adapter_type >= INVADER_SERIES &&
6191                                     !instance->msix_combined) {
6192                                         instance->msix_load_balance = true;
6193                                         instance->smp_affinity_enable = false;
6194                                 }
6195
6196                                 /* Save 1-15 reply post index address to local memory
6197                                  * Index 0 is already saved from reg offset
6198                                  * MPI2_REPLY_POST_HOST_INDEX_OFFSET
6199                                  */
6200                                 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) {
6201                                         instance->reply_post_host_index_addr[loop] =
6202                                                 (u32 __iomem *)
6203                                                 ((u8 __iomem *)instance->reg_set +
6204                                                 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET
6205                                                 + (loop * 0x10));
6206                                 }
6207                         }
6208
6209                         dev_info(&instance->pdev->dev,
6210                                  "firmware supports msix\t: (%d)",
6211                                  instance->msix_vectors);
6212                         if (msix_vectors)
6213                                 instance->msix_vectors = min(msix_vectors,
6214                                         instance->msix_vectors);
6215                 } else /* MFI adapters */
6216                         instance->msix_vectors = 1;
6217
6218
6219                 /*
6220                  * For Aero (if some conditions are met), driver will configure a
6221                  * few additional reply queues with interrupt coalescing enabled.
6222                  * These queues with interrupt coalescing enabled are called
6223                  * High IOPS queues and rest of reply queues (based on number of
6224                  * logical CPUs) are termed as Low latency queues.
6225                  *
6226                  * Total Number of reply queues = High IOPS queues + low latency queues
6227                  *
6228                  * For rest of fusion adapters, 1 additional reply queue will be
6229                  * reserved for management commands, rest of reply queues
6230                  * (based on number of logical CPUs) will be used for IOs and
6231                  * referenced as IO queues.
6232                  * Total Number of reply queues = 1 + IO queues
6233                  *
6234                  * MFI adapters supports single MSI-x so single reply queue
6235                  * will be used for IO and management commands.
6236                  */
6237
6238                 intr_coalescing = (scratch_pad_1 & MR_INTR_COALESCING_SUPPORT_OFFSET) ?
6239                                                                 true : false;
6240                 if (intr_coalescing &&
6241                         (num_online_cpus() >= MR_HIGH_IOPS_QUEUE_COUNT) &&
6242                         (instance->msix_vectors == MEGASAS_MAX_MSIX_QUEUES))
6243                         instance->perf_mode = MR_BALANCED_PERF_MODE;
6244                 else
6245                         instance->perf_mode = MR_LATENCY_PERF_MODE;
6246
6247
6248                 if (instance->adapter_type == AERO_SERIES) {
6249                         pcie_capability_read_word(instance->pdev, PCI_EXP_LNKSTA, &lnksta);
6250                         speed = lnksta & PCI_EXP_LNKSTA_CLS;
6251
6252                         /*
6253                          * For Aero, if PCIe link speed is <16 GT/s, then driver should operate
6254                          * in latency perf mode and enable R1 PCI bandwidth algorithm
6255                          */
6256                         if (speed < 0x4) {
6257                                 instance->perf_mode = MR_LATENCY_PERF_MODE;
6258                                 fusion->pcie_bw_limitation = true;
6259                         }
6260
6261                         /*
6262                          * Performance mode settings provided through module parameter-perf_mode will
6263                          * take affect only for:
6264                          * 1. Aero family of adapters.
6265                          * 2. When user sets module parameter- perf_mode in range of 0-2.
6266                          */
6267                         if ((perf_mode >= MR_BALANCED_PERF_MODE) &&
6268                                 (perf_mode <= MR_LATENCY_PERF_MODE))
6269                                 instance->perf_mode = perf_mode;
6270                         /*
6271                          * If intr coalescing is not supported by controller FW, then IOPS
6272                          * and Balanced modes are not feasible.
6273                          */
6274                         if (!intr_coalescing)
6275                                 instance->perf_mode = MR_LATENCY_PERF_MODE;
6276
6277                 }
6278
6279                 if (instance->perf_mode == MR_BALANCED_PERF_MODE)
6280                         instance->low_latency_index_start =
6281                                 MR_HIGH_IOPS_QUEUE_COUNT;
6282                 else
6283                         instance->low_latency_index_start = 1;
6284
6285                 num_msix_req = num_online_cpus() + instance->low_latency_index_start;
6286
6287                 instance->msix_vectors = min(num_msix_req,
6288                                 instance->msix_vectors);
6289
6290                 megasas_alloc_irq_vectors(instance);
6291                 if (!instance->msix_vectors)
6292                         instance->msix_load_balance = false;
6293         }
6294         /*
6295          * MSI-X host index 0 is common for all adapter.
6296          * It is used for all MPT based Adapters.
6297          */
6298         if (instance->msix_combined) {
6299                 instance->reply_post_host_index_addr[0] =
6300                                 (u32 *)((u8 *)instance->reg_set +
6301                                 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET);
6302         } else {
6303                 instance->reply_post_host_index_addr[0] =
6304                         (u32 *)((u8 *)instance->reg_set +
6305                         MPI2_REPLY_POST_HOST_INDEX_OFFSET);
6306         }
6307
6308         if (!instance->msix_vectors) {
6309                 i = pci_alloc_irq_vectors(instance->pdev, 1, 1, PCI_IRQ_LEGACY);
6310                 if (i < 0)
6311                         goto fail_init_adapter;
6312         }
6313
6314         megasas_setup_reply_map(instance);
6315
6316         dev_info(&instance->pdev->dev,
6317                 "current msix/online cpus\t: (%d/%d)\n",
6318                 instance->msix_vectors, (unsigned int)num_online_cpus());
6319         dev_info(&instance->pdev->dev,
6320                 "RDPQ mode\t: (%s)\n", instance->is_rdpq ? "enabled" : "disabled");
6321
6322         tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
6323                 (unsigned long)instance);
6324
6325         /*
6326          * Below are default value for legacy Firmware.
6327          * non-fusion based controllers
6328          */
6329         instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
6330         instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
6331         /* Get operational params, sge flags, send init cmd to controller */
6332         if (instance->instancet->init_adapter(instance))
6333                 goto fail_init_adapter;
6334
6335         if (instance->adapter_type >= VENTURA_SERIES) {
6336                 scratch_pad_3 =
6337                         megasas_readl(instance,
6338                                       &instance->reg_set->outbound_scratch_pad_3);
6339                 if ((scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK) >=
6340                         MR_DEFAULT_NVME_PAGE_SHIFT)
6341                         instance->nvme_page_size =
6342                                 (1 << (scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK));
6343
6344                 dev_info(&instance->pdev->dev,
6345                          "NVME page size\t: (%d)\n", instance->nvme_page_size);
6346         }
6347
6348         if (instance->msix_vectors ?
6349                 megasas_setup_irqs_msix(instance, 1) :
6350                 megasas_setup_irqs_ioapic(instance))
6351                 goto fail_init_adapter;
6352
6353         if (instance->adapter_type != MFI_SERIES)
6354                 megasas_setup_irq_poll(instance);
6355
6356         instance->instancet->enable_intr(instance);
6357
6358         dev_info(&instance->pdev->dev, "INIT adapter done\n");
6359
6360         megasas_setup_jbod_map(instance);
6361
6362         if (megasas_get_device_list(instance) != SUCCESS) {
6363                 dev_err(&instance->pdev->dev,
6364                         "%s: megasas_get_device_list failed\n",
6365                         __func__);
6366                 goto fail_get_ld_pd_list;
6367         }
6368
6369         /* stream detection initialization */
6370         if (instance->adapter_type >= VENTURA_SERIES) {
6371                 fusion->stream_detect_by_ld =
6372                         kcalloc(MAX_LOGICAL_DRIVES_EXT,
6373                                 sizeof(struct LD_STREAM_DETECT *),
6374                                 GFP_KERNEL);
6375                 if (!fusion->stream_detect_by_ld) {
6376                         dev_err(&instance->pdev->dev,
6377                                 "unable to allocate stream detection for pool of LDs\n");
6378                         goto fail_get_ld_pd_list;
6379                 }
6380                 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i) {
6381                         fusion->stream_detect_by_ld[i] =
6382                                 kzalloc(sizeof(struct LD_STREAM_DETECT),
6383                                 GFP_KERNEL);
6384                         if (!fusion->stream_detect_by_ld[i]) {
6385                                 dev_err(&instance->pdev->dev,
6386                                         "unable to allocate stream detect by LD\n ");
6387                                 for (j = 0; j < i; ++j)
6388                                         kfree(fusion->stream_detect_by_ld[j]);
6389                                 kfree(fusion->stream_detect_by_ld);
6390                                 fusion->stream_detect_by_ld = NULL;
6391                                 goto fail_get_ld_pd_list;
6392                         }
6393                         fusion->stream_detect_by_ld[i]->mru_bit_map
6394                                 = MR_STREAM_BITMAP;
6395                 }
6396         }
6397
6398         /*
6399          * Compute the max allowed sectors per IO: The controller info has two
6400          * limits on max sectors. Driver should use the minimum of these two.
6401          *
6402          * 1 << stripe_sz_ops.min = max sectors per strip
6403          *
6404          * Note that older firmwares ( < FW ver 30) didn't report information
6405          * to calculate max_sectors_1. So the number ended up as zero always.
6406          */
6407         tmp_sectors = 0;
6408         ctrl_info = instance->ctrl_info_buf;
6409
6410         max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
6411                 le16_to_cpu(ctrl_info->max_strips_per_io);
6412         max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size);
6413
6414         tmp_sectors = min_t(u32, max_sectors_1, max_sectors_2);
6415
6416         instance->peerIsPresent = ctrl_info->cluster.peerIsPresent;
6417         instance->passive = ctrl_info->cluster.passive;
6418         memcpy(instance->clusterId, ctrl_info->clusterId, sizeof(instance->clusterId));
6419         instance->UnevenSpanSupport =
6420                 ctrl_info->adapterOperations2.supportUnevenSpans;
6421         if (instance->UnevenSpanSupport) {
6422                 struct fusion_context *fusion = instance->ctrl_context;
6423                 if (MR_ValidateMapInfo(instance, instance->map_id))
6424                         fusion->fast_path_io = 1;
6425                 else
6426                         fusion->fast_path_io = 0;
6427
6428         }
6429         if (ctrl_info->host_interface.SRIOV) {
6430                 instance->requestorId = ctrl_info->iov.requestorId;
6431                 if (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) {
6432                         if (!ctrl_info->adapterOperations2.activePassive)
6433                             instance->PlasmaFW111 = 1;
6434
6435                         dev_info(&instance->pdev->dev, "SR-IOV: firmware type: %s\n",
6436                             instance->PlasmaFW111 ? "1.11" : "new");
6437
6438                         if (instance->PlasmaFW111) {
6439                             iovPtr = (struct IOV_111 *)
6440                                 ((unsigned char *)ctrl_info + IOV_111_OFFSET);
6441                             instance->requestorId = iovPtr->requestorId;
6442                         }
6443                 }
6444                 dev_info(&instance->pdev->dev, "SRIOV: VF requestorId %d\n",
6445                         instance->requestorId);
6446         }
6447
6448         instance->crash_dump_fw_support =
6449                 ctrl_info->adapterOperations3.supportCrashDump;
6450         instance->crash_dump_drv_support =
6451                 (instance->crash_dump_fw_support &&
6452                 instance->crash_dump_buf);
6453         if (instance->crash_dump_drv_support)
6454                 megasas_set_crash_dump_params(instance,
6455                         MR_CRASH_BUF_TURN_OFF);
6456
6457         else {
6458                 if (instance->crash_dump_buf)
6459                         dma_free_coherent(&instance->pdev->dev,
6460                                 CRASH_DMA_BUF_SIZE,
6461                                 instance->crash_dump_buf,
6462                                 instance->crash_dump_h);
6463                 instance->crash_dump_buf = NULL;
6464         }
6465
6466         if (instance->snapdump_wait_time) {
6467                 megasas_get_snapdump_properties(instance);
6468                 dev_info(&instance->pdev->dev, "Snap dump wait time\t: %d\n",
6469                          instance->snapdump_wait_time);
6470         }
6471
6472         dev_info(&instance->pdev->dev,
6473                 "pci id\t\t: (0x%04x)/(0x%04x)/(0x%04x)/(0x%04x)\n",
6474                 le16_to_cpu(ctrl_info->pci.vendor_id),
6475                 le16_to_cpu(ctrl_info->pci.device_id),
6476                 le16_to_cpu(ctrl_info->pci.sub_vendor_id),
6477                 le16_to_cpu(ctrl_info->pci.sub_device_id));
6478         dev_info(&instance->pdev->dev, "unevenspan support      : %s\n",
6479                 instance->UnevenSpanSupport ? "yes" : "no");
6480         dev_info(&instance->pdev->dev, "firmware crash dump     : %s\n",
6481                 instance->crash_dump_drv_support ? "yes" : "no");
6482         dev_info(&instance->pdev->dev, "JBOD sequence map       : %s\n",
6483                 instance->use_seqnum_jbod_fp ? "enabled" : "disabled");
6484
6485         instance->max_sectors_per_req = instance->max_num_sge *
6486                                                 SGE_BUFFER_SIZE / 512;
6487         if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
6488                 instance->max_sectors_per_req = tmp_sectors;
6489
6490         /* Check for valid throttlequeuedepth module parameter */
6491         if (throttlequeuedepth &&
6492                         throttlequeuedepth <= instance->max_scsi_cmds)
6493                 instance->throttlequeuedepth = throttlequeuedepth;
6494         else
6495                 instance->throttlequeuedepth =
6496                                 MEGASAS_THROTTLE_QUEUE_DEPTH;
6497
6498         if ((resetwaittime < 1) ||
6499             (resetwaittime > MEGASAS_RESET_WAIT_TIME))
6500                 resetwaittime = MEGASAS_RESET_WAIT_TIME;
6501
6502         if ((scmd_timeout < 10) || (scmd_timeout > MEGASAS_DEFAULT_CMD_TIMEOUT))
6503                 scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
6504
6505         /* Launch SR-IOV heartbeat timer */
6506         if (instance->requestorId) {
6507                 if (!megasas_sriov_start_heartbeat(instance, 1)) {
6508                         megasas_start_timer(instance);
6509                 } else {
6510                         instance->skip_heartbeat_timer_del = 1;
6511                         goto fail_get_ld_pd_list;
6512                 }
6513         }
6514
6515         /*
6516          * Create and start watchdog thread which will monitor
6517          * controller state every 1 sec and trigger OCR when
6518          * it enters fault state
6519          */
6520         if (instance->adapter_type != MFI_SERIES)
6521                 if (megasas_fusion_start_watchdog(instance) != SUCCESS)
6522                         goto fail_start_watchdog;
6523
6524         return 0;
6525
6526 fail_start_watchdog:
6527         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
6528                 del_timer_sync(&instance->sriov_heartbeat_timer);
6529 fail_get_ld_pd_list:
6530         instance->instancet->disable_intr(instance);
6531         megasas_destroy_irqs(instance);
6532 fail_init_adapter:
6533         if (instance->msix_vectors)
6534                 pci_free_irq_vectors(instance->pdev);
6535         instance->msix_vectors = 0;
6536 fail_alloc_dma_buf:
6537         megasas_free_ctrl_dma_buffers(instance);
6538         megasas_free_ctrl_mem(instance);
6539 fail_ready_state:
6540         iounmap(instance->reg_set);
6541
6542 fail_ioremap:
6543         pci_release_selected_regions(instance->pdev, 1<<instance->bar);
6544
6545         dev_err(&instance->pdev->dev, "Failed from %s %d\n",
6546                 __func__, __LINE__);
6547         return -EINVAL;
6548 }
6549
6550 /**
6551  * megasas_release_mfi -        Reverses the FW initialization
6552  * @instance:                   Adapter soft state
6553  */
6554 static void megasas_release_mfi(struct megasas_instance *instance)
6555 {
6556         u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
6557
6558         if (instance->reply_queue)
6559                 dma_free_coherent(&instance->pdev->dev, reply_q_sz,
6560                             instance->reply_queue, instance->reply_queue_h);
6561
6562         megasas_free_cmds(instance);
6563
6564         iounmap(instance->reg_set);
6565
6566         pci_release_selected_regions(instance->pdev, 1<<instance->bar);
6567 }
6568
6569 /**
6570  * megasas_get_seq_num -        Gets latest event sequence numbers
6571  * @instance:                   Adapter soft state
6572  * @eli:                        FW event log sequence numbers information
6573  *
6574  * FW maintains a log of all events in a non-volatile area. Upper layers would
6575  * usually find out the latest sequence number of the events, the seq number at
6576  * the boot etc. They would "read" all the events below the latest seq number
6577  * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
6578  * number), they would subsribe to AEN (asynchronous event notification) and
6579  * wait for the events to happen.
6580  */
6581 static int
6582 megasas_get_seq_num(struct megasas_instance *instance,
6583                     struct megasas_evt_log_info *eli)
6584 {
6585         struct megasas_cmd *cmd;
6586         struct megasas_dcmd_frame *dcmd;
6587         struct megasas_evt_log_info *el_info;
6588         dma_addr_t el_info_h = 0;
6589         int ret;
6590
6591         cmd = megasas_get_cmd(instance);
6592
6593         if (!cmd) {
6594                 return -ENOMEM;
6595         }
6596
6597         dcmd = &cmd->frame->dcmd;
6598         el_info = dma_alloc_coherent(&instance->pdev->dev,
6599                                      sizeof(struct megasas_evt_log_info),
6600                                      &el_info_h, GFP_KERNEL);
6601         if (!el_info) {
6602                 megasas_return_cmd(instance, cmd);
6603                 return -ENOMEM;
6604         }
6605
6606         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6607
6608         dcmd->cmd = MFI_CMD_DCMD;
6609         dcmd->cmd_status = 0x0;
6610         dcmd->sge_count = 1;
6611         dcmd->flags = MFI_FRAME_DIR_READ;
6612         dcmd->timeout = 0;
6613         dcmd->pad_0 = 0;
6614         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info));
6615         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO);
6616
6617         megasas_set_dma_settings(instance, dcmd, el_info_h,
6618                                  sizeof(struct megasas_evt_log_info));
6619
6620         ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
6621         if (ret != DCMD_SUCCESS) {
6622                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
6623                         __func__, __LINE__);
6624                 goto dcmd_failed;
6625         }
6626
6627         /*
6628          * Copy the data back into callers buffer
6629          */
6630         eli->newest_seq_num = el_info->newest_seq_num;
6631         eli->oldest_seq_num = el_info->oldest_seq_num;
6632         eli->clear_seq_num = el_info->clear_seq_num;
6633         eli->shutdown_seq_num = el_info->shutdown_seq_num;
6634         eli->boot_seq_num = el_info->boot_seq_num;
6635
6636 dcmd_failed:
6637         dma_free_coherent(&instance->pdev->dev,
6638                         sizeof(struct megasas_evt_log_info),
6639                         el_info, el_info_h);
6640
6641         megasas_return_cmd(instance, cmd);
6642
6643         return ret;
6644 }
6645
6646 /**
6647  * megasas_register_aen -       Registers for asynchronous event notification
6648  * @instance:                   Adapter soft state
6649  * @seq_num:                    The starting sequence number
6650  * @class_locale_word:          Class of the event
6651  *
6652  * This function subscribes for AEN for events beyond the @seq_num. It requests
6653  * to be notified if and only if the event is of type @class_locale
6654  */
6655 static int
6656 megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
6657                      u32 class_locale_word)
6658 {
6659         int ret_val;
6660         struct megasas_cmd *cmd;
6661         struct megasas_dcmd_frame *dcmd;
6662         union megasas_evt_class_locale curr_aen;
6663         union megasas_evt_class_locale prev_aen;
6664
6665         /*
6666          * If there an AEN pending already (aen_cmd), check if the
6667          * class_locale of that pending AEN is inclusive of the new
6668          * AEN request we currently have. If it is, then we don't have
6669          * to do anything. In other words, whichever events the current
6670          * AEN request is subscribing to, have already been subscribed
6671          * to.
6672          *
6673          * If the old_cmd is _not_ inclusive, then we have to abort
6674          * that command, form a class_locale that is superset of both
6675          * old and current and re-issue to the FW
6676          */
6677
6678         curr_aen.word = class_locale_word;
6679
6680         if (instance->aen_cmd) {
6681
6682                 prev_aen.word =
6683                         le32_to_cpu(instance->aen_cmd->frame->dcmd.mbox.w[1]);
6684
6685                 if ((curr_aen.members.class < MFI_EVT_CLASS_DEBUG) ||
6686                     (curr_aen.members.class > MFI_EVT_CLASS_DEAD)) {
6687                         dev_info(&instance->pdev->dev,
6688                                  "%s %d out of range class %d send by application\n",
6689                                  __func__, __LINE__, curr_aen.members.class);
6690                         return 0;
6691                 }
6692
6693                 /*
6694                  * A class whose enum value is smaller is inclusive of all
6695                  * higher values. If a PROGRESS (= -1) was previously
6696                  * registered, then a new registration requests for higher
6697                  * classes need not be sent to FW. They are automatically
6698                  * included.
6699                  *
6700                  * Locale numbers don't have such hierarchy. They are bitmap
6701                  * values
6702                  */
6703                 if ((prev_aen.members.class <= curr_aen.members.class) &&
6704                     !((prev_aen.members.locale & curr_aen.members.locale) ^
6705                       curr_aen.members.locale)) {
6706                         /*
6707                          * Previously issued event registration includes
6708                          * current request. Nothing to do.
6709                          */
6710                         return 0;
6711                 } else {
6712                         curr_aen.members.locale |= prev_aen.members.locale;
6713
6714                         if (prev_aen.members.class < curr_aen.members.class)
6715                                 curr_aen.members.class = prev_aen.members.class;
6716
6717                         instance->aen_cmd->abort_aen = 1;
6718                         ret_val = megasas_issue_blocked_abort_cmd(instance,
6719                                                                   instance->
6720                                                                   aen_cmd, 30);
6721
6722                         if (ret_val) {
6723                                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to abort "
6724                                        "previous AEN command\n");
6725                                 return ret_val;
6726                         }
6727                 }
6728         }
6729
6730         cmd = megasas_get_cmd(instance);
6731
6732         if (!cmd)
6733                 return -ENOMEM;
6734
6735         dcmd = &cmd->frame->dcmd;
6736
6737         memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
6738
6739         /*
6740          * Prepare DCMD for aen registration
6741          */
6742         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6743
6744         dcmd->cmd = MFI_CMD_DCMD;
6745         dcmd->cmd_status = 0x0;
6746         dcmd->sge_count = 1;
6747         dcmd->flags = MFI_FRAME_DIR_READ;
6748         dcmd->timeout = 0;
6749         dcmd->pad_0 = 0;
6750         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail));
6751         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT);
6752         dcmd->mbox.w[0] = cpu_to_le32(seq_num);
6753         instance->last_seq_num = seq_num;
6754         dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word);
6755
6756         megasas_set_dma_settings(instance, dcmd, instance->evt_detail_h,
6757                                  sizeof(struct megasas_evt_detail));
6758
6759         if (instance->aen_cmd != NULL) {
6760                 megasas_return_cmd(instance, cmd);
6761                 return 0;
6762         }
6763
6764         /*
6765          * Store reference to the cmd used to register for AEN. When an
6766          * application wants us to register for AEN, we have to abort this
6767          * cmd and re-register with a new EVENT LOCALE supplied by that app
6768          */
6769         instance->aen_cmd = cmd;
6770
6771         /*
6772          * Issue the aen registration frame
6773          */
6774         instance->instancet->issue_dcmd(instance, cmd);
6775
6776         return 0;
6777 }
6778
6779 /* megasas_get_target_prop - Send DCMD with below details to firmware.
6780  *
6781  * This DCMD will fetch few properties of LD/system PD defined
6782  * in MR_TARGET_DEV_PROPERTIES. eg. Queue Depth, MDTS value.
6783  *
6784  * DCMD send by drivers whenever new target is added to the OS.
6785  *
6786  * dcmd.opcode         - MR_DCMD_DEV_GET_TARGET_PROP
6787  * dcmd.mbox.b[0]      - DCMD is to be fired for LD or system PD.
6788  *                       0 = system PD, 1 = LD.
6789  * dcmd.mbox.s[1]      - TargetID for LD/system PD.
6790  * dcmd.sge IN         - Pointer to return MR_TARGET_DEV_PROPERTIES.
6791  *
6792  * @instance:           Adapter soft state
6793  * @sdev:               OS provided scsi device
6794  *
6795  * Returns 0 on success non-zero on failure.
6796  */
6797 int
6798 megasas_get_target_prop(struct megasas_instance *instance,
6799                         struct scsi_device *sdev)
6800 {
6801         int ret;
6802         struct megasas_cmd *cmd;
6803         struct megasas_dcmd_frame *dcmd;
6804         u16 targetId = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL) +
6805                         sdev->id;
6806
6807         cmd = megasas_get_cmd(instance);
6808
6809         if (!cmd) {
6810                 dev_err(&instance->pdev->dev,
6811                         "Failed to get cmd %s\n", __func__);
6812                 return -ENOMEM;
6813         }
6814
6815         dcmd = &cmd->frame->dcmd;
6816
6817         memset(instance->tgt_prop, 0, sizeof(*instance->tgt_prop));
6818         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6819         dcmd->mbox.b[0] = MEGASAS_IS_LOGICAL(sdev);
6820
6821         dcmd->mbox.s[1] = cpu_to_le16(targetId);
6822         dcmd->cmd = MFI_CMD_DCMD;
6823         dcmd->cmd_status = 0xFF;
6824         dcmd->sge_count = 1;
6825         dcmd->flags = MFI_FRAME_DIR_READ;
6826         dcmd->timeout = 0;
6827         dcmd->pad_0 = 0;
6828         dcmd->data_xfer_len =
6829                 cpu_to_le32(sizeof(struct MR_TARGET_PROPERTIES));
6830         dcmd->opcode = cpu_to_le32(MR_DCMD_DRV_GET_TARGET_PROP);
6831
6832         megasas_set_dma_settings(instance, dcmd, instance->tgt_prop_h,
6833                                  sizeof(struct MR_TARGET_PROPERTIES));
6834
6835         if ((instance->adapter_type != MFI_SERIES) &&
6836             !instance->mask_interrupts)
6837                 ret = megasas_issue_blocked_cmd(instance,
6838                                                 cmd, MFI_IO_TIMEOUT_SECS);
6839         else
6840                 ret = megasas_issue_polled(instance, cmd);
6841
6842         switch (ret) {
6843         case DCMD_TIMEOUT:
6844                 switch (dcmd_timeout_ocr_possible(instance)) {
6845                 case INITIATE_OCR:
6846                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
6847                         mutex_unlock(&instance->reset_mutex);
6848                         megasas_reset_fusion(instance->host,
6849                                              MFI_IO_TIMEOUT_OCR);
6850                         mutex_lock(&instance->reset_mutex);
6851                         break;
6852                 case KILL_ADAPTER:
6853                         megaraid_sas_kill_hba(instance);
6854                         break;
6855                 case IGNORE_TIMEOUT:
6856                         dev_info(&instance->pdev->dev,
6857                                  "Ignore DCMD timeout: %s %d\n",
6858                                  __func__, __LINE__);
6859                         break;
6860                 }
6861                 break;
6862
6863         default:
6864                 megasas_return_cmd(instance, cmd);
6865         }
6866         if (ret != DCMD_SUCCESS)
6867                 dev_err(&instance->pdev->dev,
6868                         "return from %s %d return value %d\n",
6869                         __func__, __LINE__, ret);
6870
6871         return ret;
6872 }
6873
6874 /**
6875  * megasas_start_aen -  Subscribes to AEN during driver load time
6876  * @instance:           Adapter soft state
6877  */
6878 static int megasas_start_aen(struct megasas_instance *instance)
6879 {
6880         struct megasas_evt_log_info eli;
6881         union megasas_evt_class_locale class_locale;
6882
6883         /*
6884          * Get the latest sequence number from FW
6885          */
6886         memset(&eli, 0, sizeof(eli));
6887
6888         if (megasas_get_seq_num(instance, &eli))
6889                 return -1;
6890
6891         /*
6892          * Register AEN with FW for latest sequence number plus 1
6893          */
6894         class_locale.members.reserved = 0;
6895         class_locale.members.locale = MR_EVT_LOCALE_ALL;
6896         class_locale.members.class = MR_EVT_CLASS_DEBUG;
6897
6898         return megasas_register_aen(instance,
6899                         le32_to_cpu(eli.newest_seq_num) + 1,
6900                         class_locale.word);
6901 }
6902
6903 /**
6904  * megasas_io_attach -  Attaches this driver to SCSI mid-layer
6905  * @instance:           Adapter soft state
6906  */
6907 static int megasas_io_attach(struct megasas_instance *instance)
6908 {
6909         struct Scsi_Host *host = instance->host;
6910
6911         /*
6912          * Export parameters required by SCSI mid-layer
6913          */
6914         host->unique_id = instance->unique_id;
6915         host->can_queue = instance->max_scsi_cmds;
6916         host->this_id = instance->init_id;
6917         host->sg_tablesize = instance->max_num_sge;
6918
6919         if (instance->fw_support_ieee)
6920                 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE;
6921
6922         /*
6923          * Check if the module parameter value for max_sectors can be used
6924          */
6925         if (max_sectors && max_sectors < instance->max_sectors_per_req)
6926                 instance->max_sectors_per_req = max_sectors;
6927         else {
6928                 if (max_sectors) {
6929                         if (((instance->pdev->device ==
6930                                 PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
6931                                 (instance->pdev->device ==
6932                                 PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
6933                                 (max_sectors <= MEGASAS_MAX_SECTORS)) {
6934                                 instance->max_sectors_per_req = max_sectors;
6935                         } else {
6936                         dev_info(&instance->pdev->dev, "max_sectors should be > 0"
6937                                 "and <= %d (or < 1MB for GEN2 controller)\n",
6938                                 instance->max_sectors_per_req);
6939                         }
6940                 }
6941         }
6942
6943         host->max_sectors = instance->max_sectors_per_req;
6944         host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
6945         host->max_channel = MEGASAS_MAX_CHANNELS - 1;
6946         host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
6947         host->max_lun = MEGASAS_MAX_LUN;
6948         host->max_cmd_len = 16;
6949
6950         /* Use shared host tagset only for fusion adaptors
6951          * if there are managed interrupts (smp affinity enabled case).
6952          * Single msix_vectors in kdump, so shared host tag is also disabled.
6953          */
6954
6955         host->host_tagset = 0;
6956         host->nr_hw_queues = 1;
6957
6958         if ((instance->adapter_type != MFI_SERIES) &&
6959                 (instance->msix_vectors > instance->low_latency_index_start) &&
6960                 host_tagset_enable &&
6961                 instance->smp_affinity_enable) {
6962                 host->host_tagset = 1;
6963                 host->nr_hw_queues = instance->msix_vectors -
6964                         instance->low_latency_index_start + instance->iopoll_q_count;
6965                 if (instance->iopoll_q_count)
6966                         host->nr_maps = 3;
6967         } else {
6968                 instance->iopoll_q_count = 0;
6969         }
6970
6971         dev_info(&instance->pdev->dev,
6972                 "Max firmware commands: %d shared with default "
6973                 "hw_queues = %d poll_queues %d\n", instance->max_fw_cmds,
6974                 host->nr_hw_queues - instance->iopoll_q_count,
6975                 instance->iopoll_q_count);
6976         /*
6977          * Notify the mid-layer about the new controller
6978          */
6979         if (scsi_add_host(host, &instance->pdev->dev)) {
6980                 dev_err(&instance->pdev->dev,
6981                         "Failed to add host from %s %d\n",
6982                         __func__, __LINE__);
6983                 return -ENODEV;
6984         }
6985
6986         return 0;
6987 }
6988
6989 /**
6990  * megasas_set_dma_mask -       Set DMA mask for supported controllers
6991  *
6992  * @instance:           Adapter soft state
6993  * Description:
6994  *
6995  * For Ventura, driver/FW will operate in 63bit DMA addresses.
6996  *
6997  * For invader-
6998  *      By default, driver/FW will operate in 32bit DMA addresses
6999  *      for consistent DMA mapping but if 32 bit consistent
7000  *      DMA mask fails, driver will try with 63 bit consistent
7001  *      mask provided FW is true 63bit DMA capable
7002  *
7003  * For older controllers(Thunderbolt and MFI based adapters)-
7004  *      driver/FW will operate in 32 bit consistent DMA addresses.
7005  */
7006 static int
7007 megasas_set_dma_mask(struct megasas_instance *instance)
7008 {
7009         u64 consistent_mask;
7010         struct pci_dev *pdev;
7011         u32 scratch_pad_1;
7012
7013         pdev = instance->pdev;
7014         consistent_mask = (instance->adapter_type >= VENTURA_SERIES) ?
7015                                 DMA_BIT_MASK(63) : DMA_BIT_MASK(32);
7016
7017         if (IS_DMA64) {
7018                 if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(63)) &&
7019                     dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
7020                         goto fail_set_dma_mask;
7021
7022                 if ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) &&
7023                     (dma_set_coherent_mask(&pdev->dev, consistent_mask) &&
7024                      dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))) {
7025                         /*
7026                          * If 32 bit DMA mask fails, then try for 64 bit mask
7027                          * for FW capable of handling 64 bit DMA.
7028                          */
7029                         scratch_pad_1 = megasas_readl
7030                                 (instance, &instance->reg_set->outbound_scratch_pad_1);
7031
7032                         if (!(scratch_pad_1 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET))
7033                                 goto fail_set_dma_mask;
7034                         else if (dma_set_mask_and_coherent(&pdev->dev,
7035                                                            DMA_BIT_MASK(63)))
7036                                 goto fail_set_dma_mask;
7037                 }
7038         } else if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
7039                 goto fail_set_dma_mask;
7040
7041         if (pdev->dev.coherent_dma_mask == DMA_BIT_MASK(32))
7042                 instance->consistent_mask_64bit = false;
7043         else
7044                 instance->consistent_mask_64bit = true;
7045
7046         dev_info(&pdev->dev, "%s bit DMA mask and %s bit consistent mask\n",
7047                  ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) ? "63" : "32"),
7048                  (instance->consistent_mask_64bit ? "63" : "32"));
7049
7050         return 0;
7051
7052 fail_set_dma_mask:
7053         dev_err(&pdev->dev, "Failed to set DMA mask\n");
7054         return -1;
7055
7056 }
7057
7058 /*
7059  * megasas_set_adapter_type -   Set adapter type.
7060  *                              Supported controllers can be divided in
7061  *                              different categories-
7062  *                                      enum MR_ADAPTER_TYPE {
7063  *                                              MFI_SERIES = 1,
7064  *                                              THUNDERBOLT_SERIES = 2,
7065  *                                              INVADER_SERIES = 3,
7066  *                                              VENTURA_SERIES = 4,
7067  *                                              AERO_SERIES = 5,
7068  *                                      };
7069  * @instance:                   Adapter soft state
7070  * return:                      void
7071  */
7072 static inline void megasas_set_adapter_type(struct megasas_instance *instance)
7073 {
7074         if ((instance->pdev->vendor == PCI_VENDOR_ID_DELL) &&
7075             (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5)) {
7076                 instance->adapter_type = MFI_SERIES;
7077         } else {
7078                 switch (instance->pdev->device) {
7079                 case PCI_DEVICE_ID_LSI_AERO_10E1:
7080                 case PCI_DEVICE_ID_LSI_AERO_10E2:
7081                 case PCI_DEVICE_ID_LSI_AERO_10E5:
7082                 case PCI_DEVICE_ID_LSI_AERO_10E6:
7083                         instance->adapter_type = AERO_SERIES;
7084                         break;
7085                 case PCI_DEVICE_ID_LSI_VENTURA:
7086                 case PCI_DEVICE_ID_LSI_CRUSADER:
7087                 case PCI_DEVICE_ID_LSI_HARPOON:
7088                 case PCI_DEVICE_ID_LSI_TOMCAT:
7089                 case PCI_DEVICE_ID_LSI_VENTURA_4PORT:
7090                 case PCI_DEVICE_ID_LSI_CRUSADER_4PORT:
7091                         instance->adapter_type = VENTURA_SERIES;
7092                         break;
7093                 case PCI_DEVICE_ID_LSI_FUSION:
7094                 case PCI_DEVICE_ID_LSI_PLASMA:
7095                         instance->adapter_type = THUNDERBOLT_SERIES;
7096                         break;
7097                 case PCI_DEVICE_ID_LSI_INVADER:
7098                 case PCI_DEVICE_ID_LSI_INTRUDER:
7099                 case PCI_DEVICE_ID_LSI_INTRUDER_24:
7100                 case PCI_DEVICE_ID_LSI_CUTLASS_52:
7101                 case PCI_DEVICE_ID_LSI_CUTLASS_53:
7102                 case PCI_DEVICE_ID_LSI_FURY:
7103                         instance->adapter_type = INVADER_SERIES;
7104                         break;
7105                 default: /* For all other supported controllers */
7106                         instance->adapter_type = MFI_SERIES;
7107                         break;
7108                 }
7109         }
7110 }
7111
7112 static inline int megasas_alloc_mfi_ctrl_mem(struct megasas_instance *instance)
7113 {
7114         instance->producer = dma_alloc_coherent(&instance->pdev->dev,
7115                         sizeof(u32), &instance->producer_h, GFP_KERNEL);
7116         instance->consumer = dma_alloc_coherent(&instance->pdev->dev,
7117                         sizeof(u32), &instance->consumer_h, GFP_KERNEL);
7118
7119         if (!instance->producer || !instance->consumer) {
7120                 dev_err(&instance->pdev->dev,
7121                         "Failed to allocate memory for producer, consumer\n");
7122                 return -1;
7123         }
7124
7125         *instance->producer = 0;
7126         *instance->consumer = 0;
7127         return 0;
7128 }
7129
7130 /**
7131  * megasas_alloc_ctrl_mem -     Allocate per controller memory for core data
7132  *                              structures which are not common across MFI
7133  *                              adapters and fusion adapters.
7134  *                              For MFI based adapters, allocate producer and
7135  *                              consumer buffers. For fusion adapters, allocate
7136  *                              memory for fusion context.
7137  * @instance:                   Adapter soft state
7138  * return:                      0 for SUCCESS
7139  */
7140 static int megasas_alloc_ctrl_mem(struct megasas_instance *instance)
7141 {
7142         instance->reply_map = kcalloc(nr_cpu_ids, sizeof(unsigned int),
7143                                       GFP_KERNEL);
7144         if (!instance->reply_map)
7145                 return -ENOMEM;
7146
7147         switch (instance->adapter_type) {
7148         case MFI_SERIES:
7149                 if (megasas_alloc_mfi_ctrl_mem(instance))
7150                         goto fail;
7151                 break;
7152         case AERO_SERIES:
7153         case VENTURA_SERIES:
7154         case THUNDERBOLT_SERIES:
7155         case INVADER_SERIES:
7156                 if (megasas_alloc_fusion_context(instance))
7157                         goto fail;
7158                 break;
7159         }
7160
7161         return 0;
7162  fail:
7163         kfree(instance->reply_map);
7164         instance->reply_map = NULL;
7165         return -ENOMEM;
7166 }
7167
7168 /*
7169  * megasas_free_ctrl_mem -      Free fusion context for fusion adapters and
7170  *                              producer, consumer buffers for MFI adapters
7171  *
7172  * @instance -                  Adapter soft instance
7173  *
7174  */
7175 static inline void megasas_free_ctrl_mem(struct megasas_instance *instance)
7176 {
7177         kfree(instance->reply_map);
7178         if (instance->adapter_type == MFI_SERIES) {
7179                 if (instance->producer)
7180                         dma_free_coherent(&instance->pdev->dev, sizeof(u32),
7181                                             instance->producer,
7182                                             instance->producer_h);
7183                 if (instance->consumer)
7184                         dma_free_coherent(&instance->pdev->dev, sizeof(u32),
7185                                             instance->consumer,
7186                                             instance->consumer_h);
7187         } else {
7188                 megasas_free_fusion_context(instance);
7189         }
7190 }
7191
7192 /**
7193  * megasas_alloc_ctrl_dma_buffers -     Allocate consistent DMA buffers during
7194  *                                      driver load time
7195  *
7196  * @instance:                           Adapter soft instance
7197  *
7198  * @return:                             O for SUCCESS
7199  */
7200 static inline
7201 int megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance)
7202 {
7203         struct pci_dev *pdev = instance->pdev;
7204         struct fusion_context *fusion = instance->ctrl_context;
7205
7206         instance->evt_detail = dma_alloc_coherent(&pdev->dev,
7207                         sizeof(struct megasas_evt_detail),
7208                         &instance->evt_detail_h, GFP_KERNEL);
7209
7210         if (!instance->evt_detail) {
7211                 dev_err(&instance->pdev->dev,
7212                         "Failed to allocate event detail buffer\n");
7213                 return -ENOMEM;
7214         }
7215
7216         if (fusion) {
7217                 fusion->ioc_init_request =
7218                         dma_alloc_coherent(&pdev->dev,
7219                                            sizeof(struct MPI2_IOC_INIT_REQUEST),
7220                                            &fusion->ioc_init_request_phys,
7221                                            GFP_KERNEL);
7222
7223                 if (!fusion->ioc_init_request) {
7224                         dev_err(&pdev->dev,
7225                                 "Failed to allocate PD list buffer\n");
7226                         return -ENOMEM;
7227                 }
7228
7229                 instance->snapdump_prop = dma_alloc_coherent(&pdev->dev,
7230                                 sizeof(struct MR_SNAPDUMP_PROPERTIES),
7231                                 &instance->snapdump_prop_h, GFP_KERNEL);
7232
7233                 if (!instance->snapdump_prop)
7234                         dev_err(&pdev->dev,
7235                                 "Failed to allocate snapdump properties buffer\n");
7236
7237                 instance->host_device_list_buf = dma_alloc_coherent(&pdev->dev,
7238                                                         HOST_DEVICE_LIST_SZ,
7239                                                         &instance->host_device_list_buf_h,
7240                                                         GFP_KERNEL);
7241
7242                 if (!instance->host_device_list_buf) {
7243                         dev_err(&pdev->dev,
7244                                 "Failed to allocate targetid list buffer\n");
7245                         return -ENOMEM;
7246                 }
7247
7248         }
7249
7250         instance->pd_list_buf =
7251                 dma_alloc_coherent(&pdev->dev,
7252                                      MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
7253                                      &instance->pd_list_buf_h, GFP_KERNEL);
7254
7255         if (!instance->pd_list_buf) {
7256                 dev_err(&pdev->dev, "Failed to allocate PD list buffer\n");
7257                 return -ENOMEM;
7258         }
7259
7260         instance->ctrl_info_buf =
7261                 dma_alloc_coherent(&pdev->dev,
7262                                      sizeof(struct megasas_ctrl_info),
7263                                      &instance->ctrl_info_buf_h, GFP_KERNEL);
7264
7265         if (!instance->ctrl_info_buf) {
7266                 dev_err(&pdev->dev,
7267                         "Failed to allocate controller info buffer\n");
7268                 return -ENOMEM;
7269         }
7270
7271         instance->ld_list_buf =
7272                 dma_alloc_coherent(&pdev->dev,
7273                                      sizeof(struct MR_LD_LIST),
7274                                      &instance->ld_list_buf_h, GFP_KERNEL);
7275
7276         if (!instance->ld_list_buf) {
7277                 dev_err(&pdev->dev, "Failed to allocate LD list buffer\n");
7278                 return -ENOMEM;
7279         }
7280
7281         instance->ld_targetid_list_buf =
7282                 dma_alloc_coherent(&pdev->dev,
7283                                 sizeof(struct MR_LD_TARGETID_LIST),
7284                                 &instance->ld_targetid_list_buf_h, GFP_KERNEL);
7285
7286         if (!instance->ld_targetid_list_buf) {
7287                 dev_err(&pdev->dev,
7288                         "Failed to allocate LD targetid list buffer\n");
7289                 return -ENOMEM;
7290         }
7291
7292         if (!reset_devices) {
7293                 instance->system_info_buf =
7294                         dma_alloc_coherent(&pdev->dev,
7295                                         sizeof(struct MR_DRV_SYSTEM_INFO),
7296                                         &instance->system_info_h, GFP_KERNEL);
7297                 instance->pd_info =
7298                         dma_alloc_coherent(&pdev->dev,
7299                                         sizeof(struct MR_PD_INFO),
7300                                         &instance->pd_info_h, GFP_KERNEL);
7301                 instance->tgt_prop =
7302                         dma_alloc_coherent(&pdev->dev,
7303                                         sizeof(struct MR_TARGET_PROPERTIES),
7304                                         &instance->tgt_prop_h, GFP_KERNEL);
7305                 instance->crash_dump_buf =
7306                         dma_alloc_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE,
7307                                         &instance->crash_dump_h, GFP_KERNEL);
7308
7309                 if (!instance->system_info_buf)
7310                         dev_err(&instance->pdev->dev,
7311                                 "Failed to allocate system info buffer\n");
7312
7313                 if (!instance->pd_info)
7314                         dev_err(&instance->pdev->dev,
7315                                 "Failed to allocate pd_info buffer\n");
7316
7317                 if (!instance->tgt_prop)
7318                         dev_err(&instance->pdev->dev,
7319                                 "Failed to allocate tgt_prop buffer\n");
7320
7321                 if (!instance->crash_dump_buf)
7322                         dev_err(&instance->pdev->dev,
7323                                 "Failed to allocate crash dump buffer\n");
7324         }
7325
7326         return 0;
7327 }
7328
7329 /*
7330  * megasas_free_ctrl_dma_buffers -      Free consistent DMA buffers allocated
7331  *                                      during driver load time
7332  *
7333  * @instance-                           Adapter soft instance
7334  *
7335  */
7336 static inline
7337 void megasas_free_ctrl_dma_buffers(struct megasas_instance *instance)
7338 {
7339         struct pci_dev *pdev = instance->pdev;
7340         struct fusion_context *fusion = instance->ctrl_context;
7341
7342         if (instance->evt_detail)
7343                 dma_free_coherent(&pdev->dev, sizeof(struct megasas_evt_detail),
7344                                     instance->evt_detail,
7345                                     instance->evt_detail_h);
7346
7347         if (fusion && fusion->ioc_init_request)
7348                 dma_free_coherent(&pdev->dev,
7349                                   sizeof(struct MPI2_IOC_INIT_REQUEST),
7350                                   fusion->ioc_init_request,
7351                                   fusion->ioc_init_request_phys);
7352
7353         if (instance->pd_list_buf)
7354                 dma_free_coherent(&pdev->dev,
7355                                     MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
7356                                     instance->pd_list_buf,
7357                                     instance->pd_list_buf_h);
7358
7359         if (instance->ld_list_buf)
7360                 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_LIST),
7361                                     instance->ld_list_buf,
7362                                     instance->ld_list_buf_h);
7363
7364         if (instance->ld_targetid_list_buf)
7365                 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_TARGETID_LIST),
7366                                     instance->ld_targetid_list_buf,
7367                                     instance->ld_targetid_list_buf_h);
7368
7369         if (instance->ctrl_info_buf)
7370                 dma_free_coherent(&pdev->dev, sizeof(struct megasas_ctrl_info),
7371                                     instance->ctrl_info_buf,
7372                                     instance->ctrl_info_buf_h);
7373
7374         if (instance->system_info_buf)
7375                 dma_free_coherent(&pdev->dev, sizeof(struct MR_DRV_SYSTEM_INFO),
7376                                     instance->system_info_buf,
7377                                     instance->system_info_h);
7378
7379         if (instance->pd_info)
7380                 dma_free_coherent(&pdev->dev, sizeof(struct MR_PD_INFO),
7381                                     instance->pd_info, instance->pd_info_h);
7382
7383         if (instance->tgt_prop)
7384                 dma_free_coherent(&pdev->dev, sizeof(struct MR_TARGET_PROPERTIES),
7385                                     instance->tgt_prop, instance->tgt_prop_h);
7386
7387         if (instance->crash_dump_buf)
7388                 dma_free_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE,
7389                                     instance->crash_dump_buf,
7390                                     instance->crash_dump_h);
7391
7392         if (instance->snapdump_prop)
7393                 dma_free_coherent(&pdev->dev,
7394                                   sizeof(struct MR_SNAPDUMP_PROPERTIES),
7395                                   instance->snapdump_prop,
7396                                   instance->snapdump_prop_h);
7397
7398         if (instance->host_device_list_buf)
7399                 dma_free_coherent(&pdev->dev,
7400                                   HOST_DEVICE_LIST_SZ,
7401                                   instance->host_device_list_buf,
7402                                   instance->host_device_list_buf_h);
7403
7404 }
7405
7406 /*
7407  * megasas_init_ctrl_params -           Initialize controller's instance
7408  *                                      parameters before FW init
7409  * @instance -                          Adapter soft instance
7410  * @return -                            void
7411  */
7412 static inline void megasas_init_ctrl_params(struct megasas_instance *instance)
7413 {
7414         instance->fw_crash_state = UNAVAILABLE;
7415
7416         megasas_poll_wait_aen = 0;
7417         instance->issuepend_done = 1;
7418         atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
7419
7420         /*
7421          * Initialize locks and queues
7422          */
7423         INIT_LIST_HEAD(&instance->cmd_pool);
7424         INIT_LIST_HEAD(&instance->internal_reset_pending_q);
7425
7426         atomic_set(&instance->fw_outstanding, 0);
7427         atomic64_set(&instance->total_io_count, 0);
7428
7429         init_waitqueue_head(&instance->int_cmd_wait_q);
7430         init_waitqueue_head(&instance->abort_cmd_wait_q);
7431
7432         spin_lock_init(&instance->crashdump_lock);
7433         spin_lock_init(&instance->mfi_pool_lock);
7434         spin_lock_init(&instance->hba_lock);
7435         spin_lock_init(&instance->stream_lock);
7436         spin_lock_init(&instance->completion_lock);
7437
7438         mutex_init(&instance->reset_mutex);
7439
7440         if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
7441             (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY))
7442                 instance->flag_ieee = 1;
7443
7444         megasas_dbg_lvl = 0;
7445         instance->flag = 0;
7446         instance->unload = 1;
7447         instance->last_time = 0;
7448         instance->disableOnlineCtrlReset = 1;
7449         instance->UnevenSpanSupport = 0;
7450         instance->smp_affinity_enable = smp_affinity_enable ? true : false;
7451         instance->msix_load_balance = false;
7452
7453         if (instance->adapter_type != MFI_SERIES)
7454                 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
7455         else
7456                 INIT_WORK(&instance->work_init, process_fw_state_change_wq);
7457 }
7458
7459 /**
7460  * megasas_probe_one -  PCI hotplug entry point
7461  * @pdev:               PCI device structure
7462  * @id:                 PCI ids of supported hotplugged adapter
7463  */
7464 static int megasas_probe_one(struct pci_dev *pdev,
7465                              const struct pci_device_id *id)
7466 {
7467         int rval, pos;
7468         struct Scsi_Host *host;
7469         struct megasas_instance *instance;
7470         u16 control = 0;
7471
7472         switch (pdev->device) {
7473         case PCI_DEVICE_ID_LSI_AERO_10E0:
7474         case PCI_DEVICE_ID_LSI_AERO_10E3:
7475         case PCI_DEVICE_ID_LSI_AERO_10E4:
7476         case PCI_DEVICE_ID_LSI_AERO_10E7:
7477                 dev_err(&pdev->dev, "Adapter is in non secure mode\n");
7478                 return 1;
7479         case PCI_DEVICE_ID_LSI_AERO_10E1:
7480         case PCI_DEVICE_ID_LSI_AERO_10E5:
7481                 dev_info(&pdev->dev, "Adapter is in configurable secure mode\n");
7482                 break;
7483         }
7484
7485         /* Reset MSI-X in the kdump kernel */
7486         if (reset_devices) {
7487                 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
7488                 if (pos) {
7489                         pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS,
7490                                              &control);
7491                         if (control & PCI_MSIX_FLAGS_ENABLE) {
7492                                 dev_info(&pdev->dev, "resetting MSI-X\n");
7493                                 pci_write_config_word(pdev,
7494                                                       pos + PCI_MSIX_FLAGS,
7495                                                       control &
7496                                                       ~PCI_MSIX_FLAGS_ENABLE);
7497                         }
7498                 }
7499         }
7500
7501         /*
7502          * PCI prepping: enable device set bus mastering and dma mask
7503          */
7504         rval = pci_enable_device_mem(pdev);
7505
7506         if (rval) {
7507                 return rval;
7508         }
7509
7510         pci_set_master(pdev);
7511
7512         host = scsi_host_alloc(&megasas_template,
7513                                sizeof(struct megasas_instance));
7514
7515         if (!host) {
7516                 dev_printk(KERN_DEBUG, &pdev->dev, "scsi_host_alloc failed\n");
7517                 goto fail_alloc_instance;
7518         }
7519
7520         instance = (struct megasas_instance *)host->hostdata;
7521         memset(instance, 0, sizeof(*instance));
7522         atomic_set(&instance->fw_reset_no_pci_access, 0);
7523
7524         /*
7525          * Initialize PCI related and misc parameters
7526          */
7527         instance->pdev = pdev;
7528         instance->host = host;
7529         instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
7530         instance->init_id = MEGASAS_DEFAULT_INIT_ID;
7531
7532         megasas_set_adapter_type(instance);
7533
7534         /*
7535          * Initialize MFI Firmware
7536          */
7537         if (megasas_init_fw(instance))
7538                 goto fail_init_mfi;
7539
7540         if (instance->requestorId) {
7541                 if (instance->PlasmaFW111) {
7542                         instance->vf_affiliation_111 =
7543                                 dma_alloc_coherent(&pdev->dev,
7544                                         sizeof(struct MR_LD_VF_AFFILIATION_111),
7545                                         &instance->vf_affiliation_111_h,
7546                                         GFP_KERNEL);
7547                         if (!instance->vf_affiliation_111)
7548                                 dev_warn(&pdev->dev, "Can't allocate "
7549                                        "memory for VF affiliation buffer\n");
7550                 } else {
7551                         instance->vf_affiliation =
7552                                 dma_alloc_coherent(&pdev->dev,
7553                                         (MAX_LOGICAL_DRIVES + 1) *
7554                                         sizeof(struct MR_LD_VF_AFFILIATION),
7555                                         &instance->vf_affiliation_h,
7556                                         GFP_KERNEL);
7557                         if (!instance->vf_affiliation)
7558                                 dev_warn(&pdev->dev, "Can't allocate "
7559                                        "memory for VF affiliation buffer\n");
7560                 }
7561         }
7562
7563         /*
7564          * Store instance in PCI softstate
7565          */
7566         pci_set_drvdata(pdev, instance);
7567
7568         /*
7569          * Add this controller to megasas_mgmt_info structure so that it
7570          * can be exported to management applications
7571          */
7572         megasas_mgmt_info.count++;
7573         megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
7574         megasas_mgmt_info.max_index++;
7575
7576         /*
7577          * Register with SCSI mid-layer
7578          */
7579         if (megasas_io_attach(instance))
7580                 goto fail_io_attach;
7581
7582         instance->unload = 0;
7583         /*
7584          * Trigger SCSI to scan our drives
7585          */
7586         if (!instance->enable_fw_dev_list ||
7587             (instance->host_device_list_buf->count > 0))
7588                 scsi_scan_host(host);
7589
7590         /*
7591          * Initiate AEN (Asynchronous Event Notification)
7592          */
7593         if (megasas_start_aen(instance)) {
7594                 dev_printk(KERN_DEBUG, &pdev->dev, "start aen failed\n");
7595                 goto fail_start_aen;
7596         }
7597
7598         megasas_setup_debugfs(instance);
7599
7600         /* Get current SR-IOV LD/VF affiliation */
7601         if (instance->requestorId)
7602                 megasas_get_ld_vf_affiliation(instance, 1);
7603
7604         return 0;
7605
7606 fail_start_aen:
7607         instance->unload = 1;
7608         scsi_remove_host(instance->host);
7609 fail_io_attach:
7610         megasas_mgmt_info.count--;
7611         megasas_mgmt_info.max_index--;
7612         megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
7613
7614         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7615                 del_timer_sync(&instance->sriov_heartbeat_timer);
7616
7617         instance->instancet->disable_intr(instance);
7618         megasas_destroy_irqs(instance);
7619
7620         if (instance->adapter_type != MFI_SERIES)
7621                 megasas_release_fusion(instance);
7622         else
7623                 megasas_release_mfi(instance);
7624
7625         if (instance->msix_vectors)
7626                 pci_free_irq_vectors(instance->pdev);
7627         instance->msix_vectors = 0;
7628
7629         if (instance->fw_crash_state != UNAVAILABLE)
7630                 megasas_free_host_crash_buffer(instance);
7631
7632         if (instance->adapter_type != MFI_SERIES)
7633                 megasas_fusion_stop_watchdog(instance);
7634 fail_init_mfi:
7635         scsi_host_put(host);
7636 fail_alloc_instance:
7637         pci_disable_device(pdev);
7638
7639         return -ENODEV;
7640 }
7641
7642 /**
7643  * megasas_flush_cache -        Requests FW to flush all its caches
7644  * @instance:                   Adapter soft state
7645  */
7646 static void megasas_flush_cache(struct megasas_instance *instance)
7647 {
7648         struct megasas_cmd *cmd;
7649         struct megasas_dcmd_frame *dcmd;
7650
7651         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
7652                 return;
7653
7654         cmd = megasas_get_cmd(instance);
7655
7656         if (!cmd)
7657                 return;
7658
7659         dcmd = &cmd->frame->dcmd;
7660
7661         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
7662
7663         dcmd->cmd = MFI_CMD_DCMD;
7664         dcmd->cmd_status = 0x0;
7665         dcmd->sge_count = 0;
7666         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
7667         dcmd->timeout = 0;
7668         dcmd->pad_0 = 0;
7669         dcmd->data_xfer_len = 0;
7670         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH);
7671         dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
7672
7673         if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
7674                         != DCMD_SUCCESS) {
7675                 dev_err(&instance->pdev->dev,
7676                         "return from %s %d\n", __func__, __LINE__);
7677                 return;
7678         }
7679
7680         megasas_return_cmd(instance, cmd);
7681 }
7682
7683 /**
7684  * megasas_shutdown_controller -        Instructs FW to shutdown the controller
7685  * @instance:                           Adapter soft state
7686  * @opcode:                             Shutdown/Hibernate
7687  */
7688 static void megasas_shutdown_controller(struct megasas_instance *instance,
7689                                         u32 opcode)
7690 {
7691         struct megasas_cmd *cmd;
7692         struct megasas_dcmd_frame *dcmd;
7693
7694         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
7695                 return;
7696
7697         cmd = megasas_get_cmd(instance);
7698
7699         if (!cmd)
7700                 return;
7701
7702         if (instance->aen_cmd)
7703                 megasas_issue_blocked_abort_cmd(instance,
7704                         instance->aen_cmd, MFI_IO_TIMEOUT_SECS);
7705         if (instance->map_update_cmd)
7706                 megasas_issue_blocked_abort_cmd(instance,
7707                         instance->map_update_cmd, MFI_IO_TIMEOUT_SECS);
7708         if (instance->jbod_seq_cmd)
7709                 megasas_issue_blocked_abort_cmd(instance,
7710                         instance->jbod_seq_cmd, MFI_IO_TIMEOUT_SECS);
7711
7712         dcmd = &cmd->frame->dcmd;
7713
7714         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
7715
7716         dcmd->cmd = MFI_CMD_DCMD;
7717         dcmd->cmd_status = 0x0;
7718         dcmd->sge_count = 0;
7719         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
7720         dcmd->timeout = 0;
7721         dcmd->pad_0 = 0;
7722         dcmd->data_xfer_len = 0;
7723         dcmd->opcode = cpu_to_le32(opcode);
7724
7725         if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
7726                         != DCMD_SUCCESS) {
7727                 dev_err(&instance->pdev->dev,
7728                         "return from %s %d\n", __func__, __LINE__);
7729                 return;
7730         }
7731
7732         megasas_return_cmd(instance, cmd);
7733 }
7734
7735 /**
7736  * megasas_suspend -    driver suspend entry point
7737  * @dev:                Device structure
7738  */
7739 static int __maybe_unused
7740 megasas_suspend(struct device *dev)
7741 {
7742         struct megasas_instance *instance;
7743
7744         instance = dev_get_drvdata(dev);
7745
7746         if (!instance)
7747                 return 0;
7748
7749         instance->unload = 1;
7750
7751         dev_info(dev, "%s is called\n", __func__);
7752
7753         /* Shutdown SR-IOV heartbeat timer */
7754         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7755                 del_timer_sync(&instance->sriov_heartbeat_timer);
7756
7757         /* Stop the FW fault detection watchdog */
7758         if (instance->adapter_type != MFI_SERIES)
7759                 megasas_fusion_stop_watchdog(instance);
7760
7761         megasas_flush_cache(instance);
7762         megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
7763
7764         /* cancel the delayed work if this work still in queue */
7765         if (instance->ev != NULL) {
7766                 struct megasas_aen_event *ev = instance->ev;
7767                 cancel_delayed_work_sync(&ev->hotplug_work);
7768                 instance->ev = NULL;
7769         }
7770
7771         tasklet_kill(&instance->isr_tasklet);
7772
7773         pci_set_drvdata(instance->pdev, instance);
7774         instance->instancet->disable_intr(instance);
7775
7776         megasas_destroy_irqs(instance);
7777
7778         if (instance->msix_vectors)
7779                 pci_free_irq_vectors(instance->pdev);
7780
7781         return 0;
7782 }
7783
7784 /**
7785  * megasas_resume-      driver resume entry point
7786  * @dev:                Device structure
7787  */
7788 static int __maybe_unused
7789 megasas_resume(struct device *dev)
7790 {
7791         int rval;
7792         struct Scsi_Host *host;
7793         struct megasas_instance *instance;
7794         u32 status_reg;
7795
7796         instance = dev_get_drvdata(dev);
7797
7798         if (!instance)
7799                 return 0;
7800
7801         host = instance->host;
7802
7803         dev_info(dev, "%s is called\n", __func__);
7804
7805         /*
7806          * We expect the FW state to be READY
7807          */
7808
7809         if (megasas_transition_to_ready(instance, 0)) {
7810                 dev_info(&instance->pdev->dev,
7811                          "Failed to transition controller to ready from %s!\n",
7812                          __func__);
7813                 if (instance->adapter_type != MFI_SERIES) {
7814                         status_reg =
7815                                 instance->instancet->read_fw_status_reg(instance);
7816                         if (!(status_reg & MFI_RESET_ADAPTER) ||
7817                                 ((megasas_adp_reset_wait_for_ready
7818                                 (instance, true, 0)) == FAILED))
7819                                 goto fail_ready_state;
7820                 } else {
7821                         atomic_set(&instance->fw_reset_no_pci_access, 1);
7822                         instance->instancet->adp_reset
7823                                 (instance, instance->reg_set);
7824                         atomic_set(&instance->fw_reset_no_pci_access, 0);
7825
7826                         /* waiting for about 30 seconds before retry */
7827                         ssleep(30);
7828
7829                         if (megasas_transition_to_ready(instance, 0))
7830                                 goto fail_ready_state;
7831                 }
7832
7833                 dev_info(&instance->pdev->dev,
7834                          "FW restarted successfully from %s!\n",
7835                          __func__);
7836         }
7837         if (megasas_set_dma_mask(instance))
7838                 goto fail_set_dma_mask;
7839
7840         /*
7841          * Initialize MFI Firmware
7842          */
7843
7844         atomic_set(&instance->fw_outstanding, 0);
7845         atomic_set(&instance->ldio_outstanding, 0);
7846
7847         /* Now re-enable MSI-X */
7848         if (instance->msix_vectors)
7849                 megasas_alloc_irq_vectors(instance);
7850
7851         if (!instance->msix_vectors) {
7852                 rval = pci_alloc_irq_vectors(instance->pdev, 1, 1,
7853                                              PCI_IRQ_LEGACY);
7854                 if (rval < 0)
7855                         goto fail_reenable_msix;
7856         }
7857
7858         megasas_setup_reply_map(instance);
7859
7860         if (instance->adapter_type != MFI_SERIES) {
7861                 megasas_reset_reply_desc(instance);
7862                 if (megasas_ioc_init_fusion(instance)) {
7863                         megasas_free_cmds(instance);
7864                         megasas_free_cmds_fusion(instance);
7865                         goto fail_init_mfi;
7866                 }
7867                 if (!megasas_get_map_info(instance))
7868                         megasas_sync_map_info(instance);
7869         } else {
7870                 *instance->producer = 0;
7871                 *instance->consumer = 0;
7872                 if (megasas_issue_init_mfi(instance))
7873                         goto fail_init_mfi;
7874         }
7875
7876         if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS)
7877                 goto fail_init_mfi;
7878
7879         tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
7880                      (unsigned long)instance);
7881
7882         if (instance->msix_vectors ?
7883                         megasas_setup_irqs_msix(instance, 0) :
7884                         megasas_setup_irqs_ioapic(instance))
7885                 goto fail_init_mfi;
7886
7887         if (instance->adapter_type != MFI_SERIES)
7888                 megasas_setup_irq_poll(instance);
7889
7890         /* Re-launch SR-IOV heartbeat timer */
7891         if (instance->requestorId) {
7892                 if (!megasas_sriov_start_heartbeat(instance, 0))
7893                         megasas_start_timer(instance);
7894                 else {
7895                         instance->skip_heartbeat_timer_del = 1;
7896                         goto fail_init_mfi;
7897                 }
7898         }
7899
7900         instance->instancet->enable_intr(instance);
7901         megasas_setup_jbod_map(instance);
7902         instance->unload = 0;
7903
7904         /*
7905          * Initiate AEN (Asynchronous Event Notification)
7906          */
7907         if (megasas_start_aen(instance))
7908                 dev_err(&instance->pdev->dev, "Start AEN failed\n");
7909
7910         /* Re-launch FW fault watchdog */
7911         if (instance->adapter_type != MFI_SERIES)
7912                 if (megasas_fusion_start_watchdog(instance) != SUCCESS)
7913                         goto fail_start_watchdog;
7914
7915         return 0;
7916
7917 fail_start_watchdog:
7918         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7919                 del_timer_sync(&instance->sriov_heartbeat_timer);
7920 fail_init_mfi:
7921         megasas_free_ctrl_dma_buffers(instance);
7922         megasas_free_ctrl_mem(instance);
7923         scsi_host_put(host);
7924
7925 fail_reenable_msix:
7926 fail_set_dma_mask:
7927 fail_ready_state:
7928
7929         return -ENODEV;
7930 }
7931
7932 static inline int
7933 megasas_wait_for_adapter_operational(struct megasas_instance *instance)
7934 {
7935         int wait_time = MEGASAS_RESET_WAIT_TIME * 2;
7936         int i;
7937         u8 adp_state;
7938
7939         for (i = 0; i < wait_time; i++) {
7940                 adp_state = atomic_read(&instance->adprecovery);
7941                 if ((adp_state == MEGASAS_HBA_OPERATIONAL) ||
7942                     (adp_state == MEGASAS_HW_CRITICAL_ERROR))
7943                         break;
7944
7945                 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL))
7946                         dev_notice(&instance->pdev->dev, "waiting for controller reset to finish\n");
7947
7948                 msleep(1000);
7949         }
7950
7951         if (adp_state != MEGASAS_HBA_OPERATIONAL) {
7952                 dev_info(&instance->pdev->dev,
7953                          "%s HBA failed to become operational, adp_state %d\n",
7954                          __func__, adp_state);
7955                 return 1;
7956         }
7957
7958         return 0;
7959 }
7960
7961 /**
7962  * megasas_detach_one - PCI hot"un"plug entry point
7963  * @pdev:               PCI device structure
7964  */
7965 static void megasas_detach_one(struct pci_dev *pdev)
7966 {
7967         int i;
7968         struct Scsi_Host *host;
7969         struct megasas_instance *instance;
7970         struct fusion_context *fusion;
7971         u32 pd_seq_map_sz;
7972
7973         instance = pci_get_drvdata(pdev);
7974
7975         if (!instance)
7976                 return;
7977
7978         host = instance->host;
7979         fusion = instance->ctrl_context;
7980
7981         /* Shutdown SR-IOV heartbeat timer */
7982         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7983                 del_timer_sync(&instance->sriov_heartbeat_timer);
7984
7985         /* Stop the FW fault detection watchdog */
7986         if (instance->adapter_type != MFI_SERIES)
7987                 megasas_fusion_stop_watchdog(instance);
7988
7989         if (instance->fw_crash_state != UNAVAILABLE)
7990                 megasas_free_host_crash_buffer(instance);
7991         scsi_remove_host(instance->host);
7992         instance->unload = 1;
7993
7994         if (megasas_wait_for_adapter_operational(instance))
7995                 goto skip_firing_dcmds;
7996
7997         megasas_flush_cache(instance);
7998         megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
7999
8000 skip_firing_dcmds:
8001         /* cancel the delayed work if this work still in queue*/
8002         if (instance->ev != NULL) {
8003                 struct megasas_aen_event *ev = instance->ev;
8004                 cancel_delayed_work_sync(&ev->hotplug_work);
8005                 instance->ev = NULL;
8006         }
8007
8008         /* cancel all wait events */
8009         wake_up_all(&instance->int_cmd_wait_q);
8010
8011         tasklet_kill(&instance->isr_tasklet);
8012
8013         /*
8014          * Take the instance off the instance array. Note that we will not
8015          * decrement the max_index. We let this array be sparse array
8016          */
8017         for (i = 0; i < megasas_mgmt_info.max_index; i++) {
8018                 if (megasas_mgmt_info.instance[i] == instance) {
8019                         megasas_mgmt_info.count--;
8020                         megasas_mgmt_info.instance[i] = NULL;
8021
8022                         break;
8023                 }
8024         }
8025
8026         instance->instancet->disable_intr(instance);
8027
8028         megasas_destroy_irqs(instance);
8029
8030         if (instance->msix_vectors)
8031                 pci_free_irq_vectors(instance->pdev);
8032
8033         if (instance->adapter_type >= VENTURA_SERIES) {
8034                 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i)
8035                         kfree(fusion->stream_detect_by_ld[i]);
8036                 kfree(fusion->stream_detect_by_ld);
8037                 fusion->stream_detect_by_ld = NULL;
8038         }
8039
8040
8041         if (instance->adapter_type != MFI_SERIES) {
8042                 megasas_release_fusion(instance);
8043                 pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
8044                                 (sizeof(struct MR_PD_CFG_SEQ) *
8045                                         (MAX_PHYSICAL_DEVICES - 1));
8046                 for (i = 0; i < 2 ; i++) {
8047                         if (fusion->ld_map[i])
8048                                 dma_free_coherent(&instance->pdev->dev,
8049                                                   fusion->max_map_sz,
8050                                                   fusion->ld_map[i],
8051                                                   fusion->ld_map_phys[i]);
8052                         if (fusion->ld_drv_map[i]) {
8053                                 if (is_vmalloc_addr(fusion->ld_drv_map[i]))
8054                                         vfree(fusion->ld_drv_map[i]);
8055                                 else
8056                                         free_pages((ulong)fusion->ld_drv_map[i],
8057                                                    fusion->drv_map_pages);
8058                         }
8059
8060                         if (fusion->pd_seq_sync[i])
8061                                 dma_free_coherent(&instance->pdev->dev,
8062                                         pd_seq_map_sz,
8063                                         fusion->pd_seq_sync[i],
8064                                         fusion->pd_seq_phys[i]);
8065                 }
8066         } else {
8067                 megasas_release_mfi(instance);
8068         }
8069
8070         if (instance->vf_affiliation)
8071                 dma_free_coherent(&pdev->dev, (MAX_LOGICAL_DRIVES + 1) *
8072                                     sizeof(struct MR_LD_VF_AFFILIATION),
8073                                     instance->vf_affiliation,
8074                                     instance->vf_affiliation_h);
8075
8076         if (instance->vf_affiliation_111)
8077                 dma_free_coherent(&pdev->dev,
8078                                     sizeof(struct MR_LD_VF_AFFILIATION_111),
8079                                     instance->vf_affiliation_111,
8080                                     instance->vf_affiliation_111_h);
8081
8082         if (instance->hb_host_mem)
8083                 dma_free_coherent(&pdev->dev, sizeof(struct MR_CTRL_HB_HOST_MEM),
8084                                     instance->hb_host_mem,
8085                                     instance->hb_host_mem_h);
8086
8087         megasas_free_ctrl_dma_buffers(instance);
8088
8089         megasas_free_ctrl_mem(instance);
8090
8091         megasas_destroy_debugfs(instance);
8092
8093         scsi_host_put(host);
8094
8095         pci_disable_device(pdev);
8096 }
8097
8098 /**
8099  * megasas_shutdown -   Shutdown entry point
8100  * @pdev:               PCI device structure
8101  */
8102 static void megasas_shutdown(struct pci_dev *pdev)
8103 {
8104         struct megasas_instance *instance = pci_get_drvdata(pdev);
8105
8106         if (!instance)
8107                 return;
8108
8109         instance->unload = 1;
8110
8111         if (megasas_wait_for_adapter_operational(instance))
8112                 goto skip_firing_dcmds;
8113
8114         megasas_flush_cache(instance);
8115         megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
8116
8117 skip_firing_dcmds:
8118         instance->instancet->disable_intr(instance);
8119         megasas_destroy_irqs(instance);
8120
8121         if (instance->msix_vectors)
8122                 pci_free_irq_vectors(instance->pdev);
8123 }
8124
8125 /*
8126  * megasas_mgmt_open -  char node "open" entry point
8127  * @inode:      char node inode
8128  * @filep:      char node file
8129  */
8130 static int megasas_mgmt_open(struct inode *inode, struct file *filep)
8131 {
8132         /*
8133          * Allow only those users with admin rights
8134          */
8135         if (!capable(CAP_SYS_ADMIN))
8136                 return -EACCES;
8137
8138         return 0;
8139 }
8140
8141 /*
8142  * megasas_mgmt_fasync -        Async notifier registration from applications
8143  * @fd:         char node file descriptor number
8144  * @filep:      char node file
8145  * @mode:       notifier on/off
8146  *
8147  * This function adds the calling process to a driver global queue. When an
8148  * event occurs, SIGIO will be sent to all processes in this queue.
8149  */
8150 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
8151 {
8152         int rc;
8153
8154         mutex_lock(&megasas_async_queue_mutex);
8155
8156         rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
8157
8158         mutex_unlock(&megasas_async_queue_mutex);
8159
8160         if (rc >= 0) {
8161                 /* For sanity check when we get ioctl */
8162                 filep->private_data = filep;
8163                 return 0;
8164         }
8165
8166         printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
8167
8168         return rc;
8169 }
8170
8171 /*
8172  * megasas_mgmt_poll -  char node "poll" entry point
8173  * @filep:      char node file
8174  * @wait:       Events to poll for
8175  */
8176 static __poll_t megasas_mgmt_poll(struct file *file, poll_table *wait)
8177 {
8178         __poll_t mask;
8179         unsigned long flags;
8180
8181         poll_wait(file, &megasas_poll_wait, wait);
8182         spin_lock_irqsave(&poll_aen_lock, flags);
8183         if (megasas_poll_wait_aen)
8184                 mask = (EPOLLIN | EPOLLRDNORM);
8185         else
8186                 mask = 0;
8187         megasas_poll_wait_aen = 0;
8188         spin_unlock_irqrestore(&poll_aen_lock, flags);
8189         return mask;
8190 }
8191
8192 /*
8193  * megasas_set_crash_dump_params_ioctl:
8194  *              Send CRASH_DUMP_MODE DCMD to all controllers
8195  * @cmd:        MFI command frame
8196  */
8197
8198 static int megasas_set_crash_dump_params_ioctl(struct megasas_cmd *cmd)
8199 {
8200         struct megasas_instance *local_instance;
8201         int i, error = 0;
8202         int crash_support;
8203
8204         crash_support = cmd->frame->dcmd.mbox.w[0];
8205
8206         for (i = 0; i < megasas_mgmt_info.max_index; i++) {
8207                 local_instance = megasas_mgmt_info.instance[i];
8208                 if (local_instance && local_instance->crash_dump_drv_support) {
8209                         if ((atomic_read(&local_instance->adprecovery) ==
8210                                 MEGASAS_HBA_OPERATIONAL) &&
8211                                 !megasas_set_crash_dump_params(local_instance,
8212                                         crash_support)) {
8213                                 local_instance->crash_dump_app_support =
8214                                         crash_support;
8215                                 dev_info(&local_instance->pdev->dev,
8216                                         "Application firmware crash "
8217                                         "dump mode set success\n");
8218                                 error = 0;
8219                         } else {
8220                                 dev_info(&local_instance->pdev->dev,
8221                                         "Application firmware crash "
8222                                         "dump mode set failed\n");
8223                                 error = -1;
8224                         }
8225                 }
8226         }
8227         return error;
8228 }
8229
8230 /**
8231  * megasas_mgmt_fw_ioctl -      Issues management ioctls to FW
8232  * @instance:                   Adapter soft state
8233  * @user_ioc:                   User's ioctl packet
8234  * @ioc:                        ioctl packet
8235  */
8236 static int
8237 megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
8238                       struct megasas_iocpacket __user * user_ioc,
8239                       struct megasas_iocpacket *ioc)
8240 {
8241         struct megasas_sge64 *kern_sge64 = NULL;
8242         struct megasas_sge32 *kern_sge32 = NULL;
8243         struct megasas_cmd *cmd;
8244         void *kbuff_arr[MAX_IOCTL_SGE];
8245         dma_addr_t buf_handle = 0;
8246         int error = 0, i;
8247         void *sense = NULL;
8248         dma_addr_t sense_handle;
8249         void *sense_ptr;
8250         u32 opcode = 0;
8251         int ret = DCMD_SUCCESS;
8252
8253         memset(kbuff_arr, 0, sizeof(kbuff_arr));
8254
8255         if (ioc->sge_count > MAX_IOCTL_SGE) {
8256                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SGE count [%d] >  max limit [%d]\n",
8257                        ioc->sge_count, MAX_IOCTL_SGE);
8258                 return -EINVAL;
8259         }
8260
8261         if ((ioc->frame.hdr.cmd >= MFI_CMD_OP_COUNT) ||
8262             ((ioc->frame.hdr.cmd == MFI_CMD_NVME) &&
8263             !instance->support_nvme_passthru) ||
8264             ((ioc->frame.hdr.cmd == MFI_CMD_TOOLBOX) &&
8265             !instance->support_pci_lane_margining)) {
8266                 dev_err(&instance->pdev->dev,
8267                         "Received invalid ioctl command 0x%x\n",
8268                         ioc->frame.hdr.cmd);
8269                 return -ENOTSUPP;
8270         }
8271
8272         cmd = megasas_get_cmd(instance);
8273         if (!cmd) {
8274                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a cmd packet\n");
8275                 return -ENOMEM;
8276         }
8277
8278         /*
8279          * User's IOCTL packet has 2 frames (maximum). Copy those two
8280          * frames into our cmd's frames. cmd->frame's context will get
8281          * overwritten when we copy from user's frames. So set that value
8282          * alone separately
8283          */
8284         memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
8285         cmd->frame->hdr.context = cpu_to_le32(cmd->index);
8286         cmd->frame->hdr.pad_0 = 0;
8287
8288         cmd->frame->hdr.flags &= (~MFI_FRAME_IEEE);
8289
8290         if (instance->consistent_mask_64bit)
8291                 cmd->frame->hdr.flags |= cpu_to_le16((MFI_FRAME_SGL64 |
8292                                        MFI_FRAME_SENSE64));
8293         else
8294                 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_SGL64 |
8295                                                MFI_FRAME_SENSE64));
8296
8297         if (cmd->frame->hdr.cmd == MFI_CMD_DCMD)
8298                 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
8299
8300         if (opcode == MR_DCMD_CTRL_SHUTDOWN) {
8301                 mutex_lock(&instance->reset_mutex);
8302                 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS) {
8303                         megasas_return_cmd(instance, cmd);
8304                         mutex_unlock(&instance->reset_mutex);
8305                         return -1;
8306                 }
8307                 mutex_unlock(&instance->reset_mutex);
8308         }
8309
8310         if (opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) {
8311                 error = megasas_set_crash_dump_params_ioctl(cmd);
8312                 megasas_return_cmd(instance, cmd);
8313                 return error;
8314         }
8315
8316         /*
8317          * The management interface between applications and the fw uses
8318          * MFI frames. E.g, RAID configuration changes, LD property changes
8319          * etc are accomplishes through different kinds of MFI frames. The
8320          * driver needs to care only about substituting user buffers with
8321          * kernel buffers in SGLs. The location of SGL is embedded in the
8322          * struct iocpacket itself.
8323          */
8324         if (instance->consistent_mask_64bit)
8325                 kern_sge64 = (struct megasas_sge64 *)
8326                         ((unsigned long)cmd->frame + ioc->sgl_off);
8327         else
8328                 kern_sge32 = (struct megasas_sge32 *)
8329                         ((unsigned long)cmd->frame + ioc->sgl_off);
8330
8331         /*
8332          * For each user buffer, create a mirror buffer and copy in
8333          */
8334         for (i = 0; i < ioc->sge_count; i++) {
8335                 if (!ioc->sgl[i].iov_len)
8336                         continue;
8337
8338                 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
8339                                                     ioc->sgl[i].iov_len,
8340                                                     &buf_handle, GFP_KERNEL);
8341                 if (!kbuff_arr[i]) {
8342                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc "
8343                                "kernel SGL buffer for IOCTL\n");
8344                         error = -ENOMEM;
8345                         goto out;
8346                 }
8347
8348                 /*
8349                  * We don't change the dma_coherent_mask, so
8350                  * dma_alloc_coherent only returns 32bit addresses
8351                  */
8352                 if (instance->consistent_mask_64bit) {
8353                         kern_sge64[i].phys_addr = cpu_to_le64(buf_handle);
8354                         kern_sge64[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
8355                 } else {
8356                         kern_sge32[i].phys_addr = cpu_to_le32(buf_handle);
8357                         kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
8358                 }
8359
8360                 /*
8361                  * We created a kernel buffer corresponding to the
8362                  * user buffer. Now copy in from the user buffer
8363                  */
8364                 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
8365                                    (u32) (ioc->sgl[i].iov_len))) {
8366                         error = -EFAULT;
8367                         goto out;
8368                 }
8369         }
8370
8371         if (ioc->sense_len) {
8372                 /* make sure the pointer is part of the frame */
8373                 if (ioc->sense_off >
8374                     (sizeof(union megasas_frame) - sizeof(__le64))) {
8375                         error = -EINVAL;
8376                         goto out;
8377                 }
8378
8379                 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
8380                                              &sense_handle, GFP_KERNEL);
8381                 if (!sense) {
8382                         error = -ENOMEM;
8383                         goto out;
8384                 }
8385
8386                 /* always store 64 bits regardless of addressing */
8387                 sense_ptr = (void *)cmd->frame + ioc->sense_off;
8388                 put_unaligned_le64(sense_handle, sense_ptr);
8389         }
8390
8391         /*
8392          * Set the sync_cmd flag so that the ISR knows not to complete this
8393          * cmd to the SCSI mid-layer
8394          */
8395         cmd->sync_cmd = 1;
8396
8397         ret = megasas_issue_blocked_cmd(instance, cmd, 0);
8398         switch (ret) {
8399         case DCMD_INIT:
8400         case DCMD_BUSY:
8401                 cmd->sync_cmd = 0;
8402                 dev_err(&instance->pdev->dev,
8403                         "return -EBUSY from %s %d cmd 0x%x opcode 0x%x cmd->cmd_status_drv 0x%x\n",
8404                          __func__, __LINE__, cmd->frame->hdr.cmd, opcode,
8405                          cmd->cmd_status_drv);
8406                 error = -EBUSY;
8407                 goto out;
8408         }
8409
8410         cmd->sync_cmd = 0;
8411
8412         if (instance->unload == 1) {
8413                 dev_info(&instance->pdev->dev, "Driver unload is in progress "
8414                         "don't submit data to application\n");
8415                 goto out;
8416         }
8417         /*
8418          * copy out the kernel buffers to user buffers
8419          */
8420         for (i = 0; i < ioc->sge_count; i++) {
8421                 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
8422                                  ioc->sgl[i].iov_len)) {
8423                         error = -EFAULT;
8424                         goto out;
8425                 }
8426         }
8427
8428         /*
8429          * copy out the sense
8430          */
8431         if (ioc->sense_len) {
8432                 void __user *uptr;
8433                 /*
8434                  * sense_ptr points to the location that has the user
8435                  * sense buffer address
8436                  */
8437                 sense_ptr = (void *)ioc->frame.raw + ioc->sense_off;
8438                 if (in_compat_syscall())
8439                         uptr = compat_ptr(get_unaligned((compat_uptr_t *)
8440                                                         sense_ptr));
8441                 else
8442                         uptr = get_unaligned((void __user **)sense_ptr);
8443
8444                 if (copy_to_user(uptr, sense, ioc->sense_len)) {
8445                         dev_err(&instance->pdev->dev, "Failed to copy out to user "
8446                                         "sense data\n");
8447                         error = -EFAULT;
8448                         goto out;
8449                 }
8450         }
8451
8452         /*
8453          * copy the status codes returned by the fw
8454          */
8455         if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
8456                          &cmd->frame->hdr.cmd_status, sizeof(u8))) {
8457                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error copying out cmd_status\n");
8458                 error = -EFAULT;
8459         }
8460
8461 out:
8462         if (sense) {
8463                 dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
8464                                     sense, sense_handle);
8465         }
8466
8467         for (i = 0; i < ioc->sge_count; i++) {
8468                 if (kbuff_arr[i]) {
8469                         if (instance->consistent_mask_64bit)
8470                                 dma_free_coherent(&instance->pdev->dev,
8471                                         le32_to_cpu(kern_sge64[i].length),
8472                                         kbuff_arr[i],
8473                                         le64_to_cpu(kern_sge64[i].phys_addr));
8474                         else
8475                                 dma_free_coherent(&instance->pdev->dev,
8476                                         le32_to_cpu(kern_sge32[i].length),
8477                                         kbuff_arr[i],
8478                                         le32_to_cpu(kern_sge32[i].phys_addr));
8479                         kbuff_arr[i] = NULL;
8480                 }
8481         }
8482
8483         megasas_return_cmd(instance, cmd);
8484         return error;
8485 }
8486
8487 static struct megasas_iocpacket *
8488 megasas_compat_iocpacket_get_user(void __user *arg)
8489 {
8490         struct megasas_iocpacket *ioc;
8491         struct compat_megasas_iocpacket __user *cioc = arg;
8492         size_t size;
8493         int err = -EFAULT;
8494         int i;
8495
8496         ioc = kzalloc(sizeof(*ioc), GFP_KERNEL);
8497         if (!ioc)
8498                 return ERR_PTR(-ENOMEM);
8499         size = offsetof(struct megasas_iocpacket, frame) + sizeof(ioc->frame);
8500         if (copy_from_user(ioc, arg, size))
8501                 goto out;
8502
8503         for (i = 0; i < MAX_IOCTL_SGE; i++) {
8504                 compat_uptr_t iov_base;
8505
8506                 if (get_user(iov_base, &cioc->sgl[i].iov_base) ||
8507                     get_user(ioc->sgl[i].iov_len, &cioc->sgl[i].iov_len))
8508                         goto out;
8509
8510                 ioc->sgl[i].iov_base = compat_ptr(iov_base);
8511         }
8512
8513         return ioc;
8514 out:
8515         kfree(ioc);
8516         return ERR_PTR(err);
8517 }
8518
8519 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
8520 {
8521         struct megasas_iocpacket __user *user_ioc =
8522             (struct megasas_iocpacket __user *)arg;
8523         struct megasas_iocpacket *ioc;
8524         struct megasas_instance *instance;
8525         int error;
8526
8527         if (in_compat_syscall())
8528                 ioc = megasas_compat_iocpacket_get_user(user_ioc);
8529         else
8530                 ioc = memdup_user(user_ioc, sizeof(struct megasas_iocpacket));
8531
8532         if (IS_ERR(ioc))
8533                 return PTR_ERR(ioc);
8534
8535         instance = megasas_lookup_instance(ioc->host_no);
8536         if (!instance) {
8537                 error = -ENODEV;
8538                 goto out_kfree_ioc;
8539         }
8540
8541         /* Block ioctls in VF mode */
8542         if (instance->requestorId && !allow_vf_ioctls) {
8543                 error = -ENODEV;
8544                 goto out_kfree_ioc;
8545         }
8546
8547         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
8548                 dev_err(&instance->pdev->dev, "Controller in crit error\n");
8549                 error = -ENODEV;
8550                 goto out_kfree_ioc;
8551         }
8552
8553         if (instance->unload == 1) {
8554                 error = -ENODEV;
8555                 goto out_kfree_ioc;
8556         }
8557
8558         if (down_interruptible(&instance->ioctl_sem)) {
8559                 error = -ERESTARTSYS;
8560                 goto out_kfree_ioc;
8561         }
8562
8563         if  (megasas_wait_for_adapter_operational(instance)) {
8564                 error = -ENODEV;
8565                 goto out_up;
8566         }
8567
8568         error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
8569 out_up:
8570         up(&instance->ioctl_sem);
8571
8572 out_kfree_ioc:
8573         kfree(ioc);
8574         return error;
8575 }
8576
8577 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
8578 {
8579         struct megasas_instance *instance;
8580         struct megasas_aen aen;
8581         int error;
8582
8583         if (file->private_data != file) {
8584                 printk(KERN_DEBUG "megasas: fasync_helper was not "
8585                        "called first\n");
8586                 return -EINVAL;
8587         }
8588
8589         if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
8590                 return -EFAULT;
8591
8592         instance = megasas_lookup_instance(aen.host_no);
8593
8594         if (!instance)
8595                 return -ENODEV;
8596
8597         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
8598                 return -ENODEV;
8599         }
8600
8601         if (instance->unload == 1) {
8602                 return -ENODEV;
8603         }
8604
8605         if  (megasas_wait_for_adapter_operational(instance))
8606                 return -ENODEV;
8607
8608         mutex_lock(&instance->reset_mutex);
8609         error = megasas_register_aen(instance, aen.seq_num,
8610                                      aen.class_locale_word);
8611         mutex_unlock(&instance->reset_mutex);
8612         return error;
8613 }
8614
8615 /**
8616  * megasas_mgmt_ioctl - char node ioctl entry point
8617  * @file:       char device file pointer
8618  * @cmd:        ioctl command
8619  * @arg:        ioctl command arguments address
8620  */
8621 static long
8622 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
8623 {
8624         switch (cmd) {
8625         case MEGASAS_IOC_FIRMWARE:
8626                 return megasas_mgmt_ioctl_fw(file, arg);
8627
8628         case MEGASAS_IOC_GET_AEN:
8629                 return megasas_mgmt_ioctl_aen(file, arg);
8630         }
8631
8632         return -ENOTTY;
8633 }
8634
8635 #ifdef CONFIG_COMPAT
8636 static long
8637 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
8638                           unsigned long arg)
8639 {
8640         switch (cmd) {
8641         case MEGASAS_IOC_FIRMWARE32:
8642                 return megasas_mgmt_ioctl_fw(file, arg);
8643         case MEGASAS_IOC_GET_AEN:
8644                 return megasas_mgmt_ioctl_aen(file, arg);
8645         }
8646
8647         return -ENOTTY;
8648 }
8649 #endif
8650
8651 /*
8652  * File operations structure for management interface
8653  */
8654 static const struct file_operations megasas_mgmt_fops = {
8655         .owner = THIS_MODULE,
8656         .open = megasas_mgmt_open,
8657         .fasync = megasas_mgmt_fasync,
8658         .unlocked_ioctl = megasas_mgmt_ioctl,
8659         .poll = megasas_mgmt_poll,
8660 #ifdef CONFIG_COMPAT
8661         .compat_ioctl = megasas_mgmt_compat_ioctl,
8662 #endif
8663         .llseek = noop_llseek,
8664 };
8665
8666 static SIMPLE_DEV_PM_OPS(megasas_pm_ops, megasas_suspend, megasas_resume);
8667
8668 /*
8669  * PCI hotplug support registration structure
8670  */
8671 static struct pci_driver megasas_pci_driver = {
8672
8673         .name = "megaraid_sas",
8674         .id_table = megasas_pci_table,
8675         .probe = megasas_probe_one,
8676         .remove = megasas_detach_one,
8677         .driver.pm = &megasas_pm_ops,
8678         .shutdown = megasas_shutdown,
8679 };
8680
8681 /*
8682  * Sysfs driver attributes
8683  */
8684 static ssize_t version_show(struct device_driver *dd, char *buf)
8685 {
8686         return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
8687                         MEGASAS_VERSION);
8688 }
8689 static DRIVER_ATTR_RO(version);
8690
8691 static ssize_t release_date_show(struct device_driver *dd, char *buf)
8692 {
8693         return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n",
8694                 MEGASAS_RELDATE);
8695 }
8696 static DRIVER_ATTR_RO(release_date);
8697
8698 static ssize_t support_poll_for_event_show(struct device_driver *dd, char *buf)
8699 {
8700         return sprintf(buf, "%u\n", support_poll_for_event);
8701 }
8702 static DRIVER_ATTR_RO(support_poll_for_event);
8703
8704 static ssize_t support_device_change_show(struct device_driver *dd, char *buf)
8705 {
8706         return sprintf(buf, "%u\n", support_device_change);
8707 }
8708 static DRIVER_ATTR_RO(support_device_change);
8709
8710 static ssize_t dbg_lvl_show(struct device_driver *dd, char *buf)
8711 {
8712         return sprintf(buf, "%u\n", megasas_dbg_lvl);
8713 }
8714
8715 static ssize_t dbg_lvl_store(struct device_driver *dd, const char *buf,
8716                              size_t count)
8717 {
8718         int retval = count;
8719
8720         if (sscanf(buf, "%u", &megasas_dbg_lvl) < 1) {
8721                 printk(KERN_ERR "megasas: could not set dbg_lvl\n");
8722                 retval = -EINVAL;
8723         }
8724         return retval;
8725 }
8726 static DRIVER_ATTR_RW(dbg_lvl);
8727
8728 static ssize_t
8729 support_nvme_encapsulation_show(struct device_driver *dd, char *buf)
8730 {
8731         return sprintf(buf, "%u\n", support_nvme_encapsulation);
8732 }
8733
8734 static DRIVER_ATTR_RO(support_nvme_encapsulation);
8735
8736 static ssize_t
8737 support_pci_lane_margining_show(struct device_driver *dd, char *buf)
8738 {
8739         return sprintf(buf, "%u\n", support_pci_lane_margining);
8740 }
8741
8742 static DRIVER_ATTR_RO(support_pci_lane_margining);
8743
8744 static inline void megasas_remove_scsi_device(struct scsi_device *sdev)
8745 {
8746         sdev_printk(KERN_INFO, sdev, "SCSI device is removed\n");
8747         scsi_remove_device(sdev);
8748         scsi_device_put(sdev);
8749 }
8750
8751 /**
8752  * megasas_update_device_list - Update the PD and LD device list from FW
8753  *                              after an AEN event notification
8754  * @instance:                   Adapter soft state
8755  * @event_type:                 Indicates type of event (PD or LD event)
8756  *
8757  * @return:                     Success or failure
8758  *
8759  * Issue DCMDs to Firmware to update the internal device list in driver.
8760  * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination
8761  * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list.
8762  */
8763 static
8764 int megasas_update_device_list(struct megasas_instance *instance,
8765                                int event_type)
8766 {
8767         int dcmd_ret = DCMD_SUCCESS;
8768
8769         if (instance->enable_fw_dev_list) {
8770                 dcmd_ret = megasas_host_device_list_query(instance, false);
8771                 if (dcmd_ret != DCMD_SUCCESS)
8772                         goto out;
8773         } else {
8774                 if (event_type & SCAN_PD_CHANNEL) {
8775                         dcmd_ret = megasas_get_pd_list(instance);
8776
8777                         if (dcmd_ret != DCMD_SUCCESS)
8778                                 goto out;
8779                 }
8780
8781                 if (event_type & SCAN_VD_CHANNEL) {
8782                         if (!instance->requestorId ||
8783                         megasas_get_ld_vf_affiliation(instance, 0)) {
8784                                 dcmd_ret = megasas_ld_list_query(instance,
8785                                                 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST);
8786                                 if (dcmd_ret != DCMD_SUCCESS)
8787                                         goto out;
8788                         }
8789                 }
8790         }
8791
8792 out:
8793         return dcmd_ret;
8794 }
8795
8796 /**
8797  * megasas_add_remove_devices - Add/remove devices to SCSI mid-layer
8798  *                              after an AEN event notification
8799  * @instance:                   Adapter soft state
8800  * @scan_type:                  Indicates type of devices (PD/LD) to add
8801  * @return                      void
8802  */
8803 static
8804 void megasas_add_remove_devices(struct megasas_instance *instance,
8805                                 int scan_type)
8806 {
8807         int i, j;
8808         u16 pd_index = 0;
8809         u16 ld_index = 0;
8810         u16 channel = 0, id = 0;
8811         struct Scsi_Host *host;
8812         struct scsi_device *sdev1;
8813         struct MR_HOST_DEVICE_LIST *targetid_list = NULL;
8814         struct MR_HOST_DEVICE_LIST_ENTRY *targetid_entry = NULL;
8815
8816         host = instance->host;
8817
8818         if (instance->enable_fw_dev_list) {
8819                 targetid_list = instance->host_device_list_buf;
8820                 for (i = 0; i < targetid_list->count; i++) {
8821                         targetid_entry = &targetid_list->host_device_list[i];
8822                         if (targetid_entry->flags.u.bits.is_sys_pd) {
8823                                 channel = le16_to_cpu(targetid_entry->target_id) /
8824                                                 MEGASAS_MAX_DEV_PER_CHANNEL;
8825                                 id = le16_to_cpu(targetid_entry->target_id) %
8826                                                 MEGASAS_MAX_DEV_PER_CHANNEL;
8827                         } else {
8828                                 channel = MEGASAS_MAX_PD_CHANNELS +
8829                                           (le16_to_cpu(targetid_entry->target_id) /
8830                                            MEGASAS_MAX_DEV_PER_CHANNEL);
8831                                 id = le16_to_cpu(targetid_entry->target_id) %
8832                                                 MEGASAS_MAX_DEV_PER_CHANNEL;
8833                         }
8834                         sdev1 = scsi_device_lookup(host, channel, id, 0);
8835                         if (!sdev1) {
8836                                 scsi_add_device(host, channel, id, 0);
8837                         } else {
8838                                 scsi_device_put(sdev1);
8839                         }
8840                 }
8841         }
8842
8843         if (scan_type & SCAN_PD_CHANNEL) {
8844                 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
8845                         for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
8846                                 pd_index = i * MEGASAS_MAX_DEV_PER_CHANNEL + j;
8847                                 sdev1 = scsi_device_lookup(host, i, j, 0);
8848                                 if (instance->pd_list[pd_index].driveState ==
8849                                                         MR_PD_STATE_SYSTEM) {
8850                                         if (!sdev1)
8851                                                 scsi_add_device(host, i, j, 0);
8852                                         else
8853                                                 scsi_device_put(sdev1);
8854                                 } else {
8855                                         if (sdev1)
8856                                                 megasas_remove_scsi_device(sdev1);
8857                                 }
8858                         }
8859                 }
8860         }
8861
8862         if (scan_type & SCAN_VD_CHANNEL) {
8863                 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
8864                         for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
8865                                 ld_index = (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
8866                                 sdev1 = scsi_device_lookup(host,
8867                                                 MEGASAS_MAX_PD_CHANNELS + i, j, 0);
8868                                 if (instance->ld_ids[ld_index] != 0xff) {
8869                                         if (!sdev1)
8870                                                 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
8871                                         else
8872                                                 scsi_device_put(sdev1);
8873                                 } else {
8874                                         if (sdev1)
8875                                                 megasas_remove_scsi_device(sdev1);
8876                                 }
8877                         }
8878                 }
8879         }
8880
8881 }
8882
8883 static void
8884 megasas_aen_polling(struct work_struct *work)
8885 {
8886         struct megasas_aen_event *ev =
8887                 container_of(work, struct megasas_aen_event, hotplug_work.work);
8888         struct megasas_instance *instance = ev->instance;
8889         union megasas_evt_class_locale class_locale;
8890         int event_type = 0;
8891         u32 seq_num;
8892         u16 ld_target_id;
8893         int error;
8894         u8  dcmd_ret = DCMD_SUCCESS;
8895         struct scsi_device *sdev1;
8896
8897         if (!instance) {
8898                 printk(KERN_ERR "invalid instance!\n");
8899                 kfree(ev);
8900                 return;
8901         }
8902
8903         /* Don't run the event workqueue thread if OCR is running */
8904         mutex_lock(&instance->reset_mutex);
8905
8906         instance->ev = NULL;
8907         if (instance->evt_detail) {
8908                 megasas_decode_evt(instance);
8909
8910                 switch (le32_to_cpu(instance->evt_detail->code)) {
8911
8912                 case MR_EVT_PD_INSERTED:
8913                 case MR_EVT_PD_REMOVED:
8914                         event_type = SCAN_PD_CHANNEL;
8915                         break;
8916
8917                 case MR_EVT_LD_OFFLINE:
8918                 case MR_EVT_LD_DELETED:
8919                         ld_target_id = instance->evt_detail->args.ld.target_id;
8920                         sdev1 = scsi_device_lookup(instance->host,
8921                                                    MEGASAS_MAX_PD_CHANNELS +
8922                                                    (ld_target_id / MEGASAS_MAX_DEV_PER_CHANNEL),
8923                                                    (ld_target_id - MEGASAS_MAX_DEV_PER_CHANNEL),
8924                                                    0);
8925                         if (sdev1)
8926                                 megasas_remove_scsi_device(sdev1);
8927
8928                         event_type = SCAN_VD_CHANNEL;
8929                         break;
8930                 case MR_EVT_LD_CREATED:
8931                         event_type = SCAN_VD_CHANNEL;
8932                         break;
8933
8934                 case MR_EVT_CFG_CLEARED:
8935                 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
8936                 case MR_EVT_FOREIGN_CFG_IMPORTED:
8937                 case MR_EVT_LD_STATE_CHANGE:
8938                         event_type = SCAN_PD_CHANNEL | SCAN_VD_CHANNEL;
8939                         dev_info(&instance->pdev->dev, "scanning for scsi%d...\n",
8940                                 instance->host->host_no);
8941                         break;
8942
8943                 case MR_EVT_CTRL_PROP_CHANGED:
8944                         dcmd_ret = megasas_get_ctrl_info(instance);
8945                         if (dcmd_ret == DCMD_SUCCESS &&
8946                             instance->snapdump_wait_time) {
8947                                 megasas_get_snapdump_properties(instance);
8948                                 dev_info(&instance->pdev->dev,
8949                                          "Snap dump wait time\t: %d\n",
8950                                          instance->snapdump_wait_time);
8951                         }
8952                         break;
8953                 default:
8954                         event_type = 0;
8955                         break;
8956                 }
8957         } else {
8958                 dev_err(&instance->pdev->dev, "invalid evt_detail!\n");
8959                 mutex_unlock(&instance->reset_mutex);
8960                 kfree(ev);
8961                 return;
8962         }
8963
8964         if (event_type)
8965                 dcmd_ret = megasas_update_device_list(instance, event_type);
8966
8967         mutex_unlock(&instance->reset_mutex);
8968
8969         if (event_type && dcmd_ret == DCMD_SUCCESS)
8970                 megasas_add_remove_devices(instance, event_type);
8971
8972         if (dcmd_ret == DCMD_SUCCESS)
8973                 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1;
8974         else
8975                 seq_num = instance->last_seq_num;
8976
8977         /* Register AEN with FW for latest sequence number plus 1 */
8978         class_locale.members.reserved = 0;
8979         class_locale.members.locale = MR_EVT_LOCALE_ALL;
8980         class_locale.members.class = MR_EVT_CLASS_DEBUG;
8981
8982         if (instance->aen_cmd != NULL) {
8983                 kfree(ev);
8984                 return;
8985         }
8986
8987         mutex_lock(&instance->reset_mutex);
8988         error = megasas_register_aen(instance, seq_num,
8989                                         class_locale.word);
8990         if (error)
8991                 dev_err(&instance->pdev->dev,
8992                         "register aen failed error %x\n", error);
8993
8994         mutex_unlock(&instance->reset_mutex);
8995         kfree(ev);
8996 }
8997
8998 /**
8999  * megasas_init - Driver load entry point
9000  */
9001 static int __init megasas_init(void)
9002 {
9003         int rval;
9004
9005         /*
9006          * Booted in kdump kernel, minimize memory footprints by
9007          * disabling few features
9008          */
9009         if (reset_devices) {
9010                 msix_vectors = 1;
9011                 rdpq_enable = 0;
9012                 dual_qdepth_disable = 1;
9013                 poll_queues = 0;
9014         }
9015
9016         /*
9017          * Announce driver version and other information
9018          */
9019         pr_info("megasas: %s\n", MEGASAS_VERSION);
9020
9021         support_poll_for_event = 2;
9022         support_device_change = 1;
9023         support_nvme_encapsulation = true;
9024         support_pci_lane_margining = true;
9025
9026         memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
9027
9028         /*
9029          * Register character device node
9030          */
9031         rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
9032
9033         if (rval < 0) {
9034                 printk(KERN_DEBUG "megasas: failed to open device node\n");
9035                 return rval;
9036         }
9037
9038         megasas_mgmt_majorno = rval;
9039
9040         megasas_init_debugfs();
9041
9042         /*
9043          * Register ourselves as PCI hotplug module
9044          */
9045         rval = pci_register_driver(&megasas_pci_driver);
9046
9047         if (rval) {
9048                 printk(KERN_DEBUG "megasas: PCI hotplug registration failed \n");
9049                 goto err_pcidrv;
9050         }
9051
9052         if ((event_log_level < MFI_EVT_CLASS_DEBUG) ||
9053             (event_log_level > MFI_EVT_CLASS_DEAD)) {
9054                 pr_warn("megaraid_sas: provided event log level is out of range, setting it to default 2(CLASS_CRITICAL), permissible range is: -2 to 4\n");
9055                 event_log_level = MFI_EVT_CLASS_CRITICAL;
9056         }
9057
9058         rval = driver_create_file(&megasas_pci_driver.driver,
9059                                   &driver_attr_version);
9060         if (rval)
9061                 goto err_dcf_attr_ver;
9062
9063         rval = driver_create_file(&megasas_pci_driver.driver,
9064                                   &driver_attr_release_date);
9065         if (rval)
9066                 goto err_dcf_rel_date;
9067
9068         rval = driver_create_file(&megasas_pci_driver.driver,
9069                                 &driver_attr_support_poll_for_event);
9070         if (rval)
9071                 goto err_dcf_support_poll_for_event;
9072
9073         rval = driver_create_file(&megasas_pci_driver.driver,
9074                                   &driver_attr_dbg_lvl);
9075         if (rval)
9076                 goto err_dcf_dbg_lvl;
9077         rval = driver_create_file(&megasas_pci_driver.driver,
9078                                 &driver_attr_support_device_change);
9079         if (rval)
9080                 goto err_dcf_support_device_change;
9081
9082         rval = driver_create_file(&megasas_pci_driver.driver,
9083                                   &driver_attr_support_nvme_encapsulation);
9084         if (rval)
9085                 goto err_dcf_support_nvme_encapsulation;
9086
9087         rval = driver_create_file(&megasas_pci_driver.driver,
9088                                   &driver_attr_support_pci_lane_margining);
9089         if (rval)
9090                 goto err_dcf_support_pci_lane_margining;
9091
9092         return rval;
9093
9094 err_dcf_support_pci_lane_margining:
9095         driver_remove_file(&megasas_pci_driver.driver,
9096                            &driver_attr_support_nvme_encapsulation);
9097
9098 err_dcf_support_nvme_encapsulation:
9099         driver_remove_file(&megasas_pci_driver.driver,
9100                            &driver_attr_support_device_change);
9101
9102 err_dcf_support_device_change:
9103         driver_remove_file(&megasas_pci_driver.driver,
9104                            &driver_attr_dbg_lvl);
9105 err_dcf_dbg_lvl:
9106         driver_remove_file(&megasas_pci_driver.driver,
9107                         &driver_attr_support_poll_for_event);
9108 err_dcf_support_poll_for_event:
9109         driver_remove_file(&megasas_pci_driver.driver,
9110                            &driver_attr_release_date);
9111 err_dcf_rel_date:
9112         driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
9113 err_dcf_attr_ver:
9114         pci_unregister_driver(&megasas_pci_driver);
9115 err_pcidrv:
9116         megasas_exit_debugfs();
9117         unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
9118         return rval;
9119 }
9120
9121 /**
9122  * megasas_exit - Driver unload entry point
9123  */
9124 static void __exit megasas_exit(void)
9125 {
9126         driver_remove_file(&megasas_pci_driver.driver,
9127                            &driver_attr_dbg_lvl);
9128         driver_remove_file(&megasas_pci_driver.driver,
9129                         &driver_attr_support_poll_for_event);
9130         driver_remove_file(&megasas_pci_driver.driver,
9131                         &driver_attr_support_device_change);
9132         driver_remove_file(&megasas_pci_driver.driver,
9133                            &driver_attr_release_date);
9134         driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
9135         driver_remove_file(&megasas_pci_driver.driver,
9136                            &driver_attr_support_nvme_encapsulation);
9137         driver_remove_file(&megasas_pci_driver.driver,
9138                            &driver_attr_support_pci_lane_margining);
9139
9140         pci_unregister_driver(&megasas_pci_driver);
9141         megasas_exit_debugfs();
9142         unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
9143 }
9144
9145 module_init(megasas_init);
9146 module_exit(megasas_exit);