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          * up to thirty 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 < 30);
 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         megasas_priv(scmd)->cmd_priv = 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                 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                         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                 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                         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         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                 struct queue_limits *lim, 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                         if (lim)
1920                                 lim->dma_alignment = 0x7;
1921                 }
1922
1923                 mr_device_priv_data->is_tm_capable =
1924                         raid->capability.tmCapable;
1925
1926                 if (!raid->flags.isEPD)
1927                         sdev->no_write_same = 1;
1928
1929         } else if (instance->use_seqnum_jbod_fp) {
1930                 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1931                         sdev->id;
1932                 pd_sync = (void *)fusion->pd_seq_sync
1933                                 [(instance->pd_seq_map_id - 1) & 1];
1934                 mr_device_priv_data->is_tm_capable =
1935                         pd_sync->seq[pd_index].capability.tmCapable;
1936         }
1937
1938         if (is_target_prop && instance->tgt_prop->reset_tmo) {
1939                 /*
1940                  * If FW provides a target reset timeout value, driver will use
1941                  * it. If not set, fallback to default values.
1942                  */
1943                 mr_device_priv_data->target_reset_tmo =
1944                         min_t(u8, instance->max_reset_tmo,
1945                               instance->tgt_prop->reset_tmo);
1946                 mr_device_priv_data->task_abort_tmo = instance->task_abort_tmo;
1947         } else {
1948                 mr_device_priv_data->target_reset_tmo =
1949                                                 MEGASAS_DEFAULT_TM_TIMEOUT;
1950                 mr_device_priv_data->task_abort_tmo =
1951                                                 MEGASAS_DEFAULT_TM_TIMEOUT;
1952         }
1953 }
1954
1955 /*
1956  * megasas_set_nvme_device_properties -
1957  * set nomerges=2
1958  * set virtual page boundary = 4K (current mr_nvme_pg_size is 4K).
1959  * set maximum io transfer = MDTS of NVME device provided by MR firmware.
1960  *
1961  * MR firmware provides value in KB. Caller of this function converts
1962  * kb into bytes.
1963  *
1964  * e.a MDTS=5 means 2^5 * nvme page size. (In case of 4K page size,
1965  * MR firmware provides value 128 as (32 * 4K) = 128K.
1966  *
1967  * @sdev:                               scsi device
1968  * @max_io_size:                                maximum io transfer size
1969  *
1970  */
1971 static inline void
1972 megasas_set_nvme_device_properties(struct scsi_device *sdev,
1973                 struct queue_limits *lim, u32 max_io_size)
1974 {
1975         struct megasas_instance *instance;
1976         u32 mr_nvme_pg_size;
1977
1978         instance = (struct megasas_instance *)sdev->host->hostdata;
1979         mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
1980                                 MR_DEFAULT_NVME_PAGE_SIZE);
1981
1982         lim->max_hw_sectors = max_io_size / 512;
1983         lim->virt_boundary_mask = mr_nvme_pg_size - 1;
1984
1985         blk_queue_flag_set(QUEUE_FLAG_NOMERGES, sdev->request_queue);
1986 }
1987
1988 /*
1989  * megasas_set_fw_assisted_qd -
1990  * set device queue depth to can_queue
1991  * set device queue depth to fw assisted qd
1992  *
1993  * @sdev:                               scsi device
1994  * @is_target_prop                      true, if fw provided target properties.
1995  */
1996 static void megasas_set_fw_assisted_qd(struct scsi_device *sdev,
1997                                                  bool is_target_prop)
1998 {
1999         u8 interface_type;
2000         u32 device_qd = MEGASAS_DEFAULT_CMD_PER_LUN;
2001         u32 tgt_device_qd;
2002         struct megasas_instance *instance;
2003         struct MR_PRIV_DEVICE *mr_device_priv_data;
2004
2005         instance = megasas_lookup_instance(sdev->host->host_no);
2006         mr_device_priv_data = sdev->hostdata;
2007         interface_type  = mr_device_priv_data->interface_type;
2008
2009         switch (interface_type) {
2010         case SAS_PD:
2011                 device_qd = MEGASAS_SAS_QD;
2012                 break;
2013         case SATA_PD:
2014                 device_qd = MEGASAS_SATA_QD;
2015                 break;
2016         case NVME_PD:
2017                 device_qd = MEGASAS_NVME_QD;
2018                 break;
2019         }
2020
2021         if (is_target_prop) {
2022                 tgt_device_qd = le32_to_cpu(instance->tgt_prop->device_qdepth);
2023                 if (tgt_device_qd)
2024                         device_qd = min(instance->host->can_queue,
2025                                         (int)tgt_device_qd);
2026         }
2027
2028         if (instance->enable_sdev_max_qd && interface_type != UNKNOWN_DRIVE)
2029                 device_qd = instance->host->can_queue;
2030
2031         scsi_change_queue_depth(sdev, device_qd);
2032 }
2033
2034 /*
2035  * megasas_set_static_target_properties -
2036  * Device property set by driver are static and it is not required to be
2037  * updated after OCR.
2038  *
2039  * set io timeout
2040  * set device queue depth
2041  * set nvme device properties. see - megasas_set_nvme_device_properties
2042  *
2043  * @sdev:                               scsi device
2044  * @is_target_prop                      true, if fw provided target properties.
2045  */
2046 static void megasas_set_static_target_properties(struct scsi_device *sdev,
2047                 struct queue_limits *lim, bool is_target_prop)
2048 {
2049         u32 max_io_size_kb = MR_DEFAULT_NVME_MDTS_KB;
2050         struct megasas_instance *instance;
2051
2052         instance = megasas_lookup_instance(sdev->host->host_no);
2053
2054         /*
2055          * The RAID firmware may require extended timeouts.
2056          */
2057         blk_queue_rq_timeout(sdev->request_queue, scmd_timeout * HZ);
2058
2059         /* max_io_size_kb will be set to non zero for
2060          * nvme based vd and syspd.
2061          */
2062         if (is_target_prop)
2063                 max_io_size_kb = le32_to_cpu(instance->tgt_prop->max_io_size_kb);
2064
2065         if (instance->nvme_page_size && max_io_size_kb)
2066                 megasas_set_nvme_device_properties(sdev, lim,
2067                                 max_io_size_kb << 10);
2068
2069         megasas_set_fw_assisted_qd(sdev, is_target_prop);
2070 }
2071
2072
2073 static int megasas_device_configure(struct scsi_device *sdev,
2074                 struct queue_limits *lim)
2075 {
2076         u16 pd_index = 0;
2077         struct megasas_instance *instance;
2078         int ret_target_prop = DCMD_FAILED;
2079         bool is_target_prop = false;
2080
2081         instance = megasas_lookup_instance(sdev->host->host_no);
2082         if (instance->pd_list_not_supported) {
2083                 if (!MEGASAS_IS_LOGICAL(sdev) && sdev->type == TYPE_DISK) {
2084                         pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
2085                                 sdev->id;
2086                         if (instance->pd_list[pd_index].driveState !=
2087                                 MR_PD_STATE_SYSTEM)
2088                                 return -ENXIO;
2089                 }
2090         }
2091
2092         mutex_lock(&instance->reset_mutex);
2093         /* Send DCMD to Firmware and cache the information */
2094         if ((instance->pd_info) && !MEGASAS_IS_LOGICAL(sdev))
2095                 megasas_get_pd_info(instance, sdev);
2096
2097         /* Some ventura firmware may not have instance->nvme_page_size set.
2098          * Do not send MR_DCMD_DRV_GET_TARGET_PROP
2099          */
2100         if ((instance->tgt_prop) && (instance->nvme_page_size))
2101                 ret_target_prop = megasas_get_target_prop(instance, sdev);
2102
2103         is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
2104         megasas_set_static_target_properties(sdev, lim, is_target_prop);
2105
2106         /* This sdev property may change post OCR */
2107         megasas_set_dynamic_target_properties(sdev, lim, is_target_prop);
2108
2109         mutex_unlock(&instance->reset_mutex);
2110
2111         return 0;
2112 }
2113
2114 static int megasas_slave_alloc(struct scsi_device *sdev)
2115 {
2116         u16 pd_index = 0, ld_tgt_id;
2117         struct megasas_instance *instance ;
2118         struct MR_PRIV_DEVICE *mr_device_priv_data;
2119
2120         instance = megasas_lookup_instance(sdev->host->host_no);
2121         if (!MEGASAS_IS_LOGICAL(sdev)) {
2122                 /*
2123                  * Open the OS scan to the SYSTEM PD
2124                  */
2125                 pd_index =
2126                         (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
2127                         sdev->id;
2128                 if ((instance->pd_list_not_supported ||
2129                         instance->pd_list[pd_index].driveState ==
2130                         MR_PD_STATE_SYSTEM)) {
2131                         goto scan_target;
2132                 }
2133                 return -ENXIO;
2134         } else if (!MEGASAS_IS_LUN_VALID(sdev)) {
2135                 sdev_printk(KERN_INFO, sdev, "%s: invalid LUN\n", __func__);
2136                 return -ENXIO;
2137         }
2138
2139 scan_target:
2140         mr_device_priv_data = kzalloc(sizeof(*mr_device_priv_data),
2141                                         GFP_KERNEL);
2142         if (!mr_device_priv_data)
2143                 return -ENOMEM;
2144
2145         if (MEGASAS_IS_LOGICAL(sdev)) {
2146                 ld_tgt_id = MEGASAS_TARGET_ID(sdev);
2147                 instance->ld_tgtid_status[ld_tgt_id] = LD_TARGET_ID_ACTIVE;
2148                 if (megasas_dbg_lvl & LD_PD_DEBUG)
2149                         sdev_printk(KERN_INFO, sdev, "LD target ID %d created.\n", ld_tgt_id);
2150         }
2151
2152         sdev->hostdata = mr_device_priv_data;
2153
2154         atomic_set(&mr_device_priv_data->r1_ldio_hint,
2155                    instance->r1_ldio_hint_default);
2156         return 0;
2157 }
2158
2159 static void megasas_slave_destroy(struct scsi_device *sdev)
2160 {
2161         u16 ld_tgt_id;
2162         struct megasas_instance *instance;
2163
2164         instance = megasas_lookup_instance(sdev->host->host_no);
2165
2166         if (MEGASAS_IS_LOGICAL(sdev)) {
2167                 if (!MEGASAS_IS_LUN_VALID(sdev)) {
2168                         sdev_printk(KERN_INFO, sdev, "%s: invalid LUN\n", __func__);
2169                         return;
2170                 }
2171                 ld_tgt_id = MEGASAS_TARGET_ID(sdev);
2172                 instance->ld_tgtid_status[ld_tgt_id] = LD_TARGET_ID_DELETED;
2173                 if (megasas_dbg_lvl & LD_PD_DEBUG)
2174                         sdev_printk(KERN_INFO, sdev,
2175                                     "LD target ID %d removed from OS stack\n", ld_tgt_id);
2176         }
2177
2178         kfree(sdev->hostdata);
2179         sdev->hostdata = NULL;
2180 }
2181
2182 /*
2183 * megasas_complete_outstanding_ioctls - Complete outstanding ioctls after a
2184 *                                       kill adapter
2185 * @instance:                            Adapter soft state
2186 *
2187 */
2188 static void megasas_complete_outstanding_ioctls(struct megasas_instance *instance)
2189 {
2190         int i;
2191         struct megasas_cmd *cmd_mfi;
2192         struct megasas_cmd_fusion *cmd_fusion;
2193         struct fusion_context *fusion = instance->ctrl_context;
2194
2195         /* Find all outstanding ioctls */
2196         if (fusion) {
2197                 for (i = 0; i < instance->max_fw_cmds; i++) {
2198                         cmd_fusion = fusion->cmd_list[i];
2199                         if (cmd_fusion->sync_cmd_idx != (u32)ULONG_MAX) {
2200                                 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
2201                                 if (cmd_mfi->sync_cmd &&
2202                                     (cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT)) {
2203                                         cmd_mfi->frame->hdr.cmd_status =
2204                                                         MFI_STAT_WRONG_STATE;
2205                                         megasas_complete_cmd(instance,
2206                                                              cmd_mfi, DID_OK);
2207                                 }
2208                         }
2209                 }
2210         } else {
2211                 for (i = 0; i < instance->max_fw_cmds; i++) {
2212                         cmd_mfi = instance->cmd_list[i];
2213                         if (cmd_mfi->sync_cmd && cmd_mfi->frame->hdr.cmd !=
2214                                 MFI_CMD_ABORT)
2215                                 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
2216                 }
2217         }
2218 }
2219
2220
2221 void megaraid_sas_kill_hba(struct megasas_instance *instance)
2222 {
2223         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2224                 dev_warn(&instance->pdev->dev,
2225                          "Adapter already dead, skipping kill HBA\n");
2226                 return;
2227         }
2228
2229         /* Set critical error to block I/O & ioctls in case caller didn't */
2230         atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2231         /* Wait 1 second to ensure IO or ioctls in build have posted */
2232         msleep(1000);
2233         if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2234                 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2235                 (instance->adapter_type != MFI_SERIES)) {
2236                 if (!instance->requestorId) {
2237                         writel(MFI_STOP_ADP, &instance->reg_set->doorbell);
2238                         /* Flush */
2239                         readl(&instance->reg_set->doorbell);
2240                 }
2241                 if (instance->requestorId && instance->peerIsPresent)
2242                         memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
2243         } else {
2244                 writel(MFI_STOP_ADP,
2245                         &instance->reg_set->inbound_doorbell);
2246         }
2247         /* Complete outstanding ioctls when adapter is killed */
2248         megasas_complete_outstanding_ioctls(instance);
2249 }
2250
2251  /**
2252   * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
2253   *                                     restored to max value
2254   * @instance:                  Adapter soft state
2255   *
2256   */
2257 void
2258 megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
2259 {
2260         unsigned long flags;
2261
2262         if (instance->flag & MEGASAS_FW_BUSY
2263             && time_after(jiffies, instance->last_time + 5 * HZ)
2264             && atomic_read(&instance->fw_outstanding) <
2265             instance->throttlequeuedepth + 1) {
2266
2267                 spin_lock_irqsave(instance->host->host_lock, flags);
2268                 instance->flag &= ~MEGASAS_FW_BUSY;
2269
2270                 instance->host->can_queue = instance->cur_can_queue;
2271                 spin_unlock_irqrestore(instance->host->host_lock, flags);
2272         }
2273 }
2274
2275 /**
2276  * megasas_complete_cmd_dpc      -      Returns FW's controller structure
2277  * @instance_addr:                      Address of adapter soft state
2278  *
2279  * Tasklet to complete cmds
2280  */
2281 static void megasas_complete_cmd_dpc(unsigned long instance_addr)
2282 {
2283         u32 producer;
2284         u32 consumer;
2285         u32 context;
2286         struct megasas_cmd *cmd;
2287         struct megasas_instance *instance =
2288                                 (struct megasas_instance *)instance_addr;
2289         unsigned long flags;
2290
2291         /* If we have already declared adapter dead, donot complete cmds */
2292         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
2293                 return;
2294
2295         spin_lock_irqsave(&instance->completion_lock, flags);
2296
2297         producer = le32_to_cpu(*instance->producer);
2298         consumer = le32_to_cpu(*instance->consumer);
2299
2300         while (consumer != producer) {
2301                 context = le32_to_cpu(instance->reply_queue[consumer]);
2302                 if (context >= instance->max_fw_cmds) {
2303                         dev_err(&instance->pdev->dev, "Unexpected context value %x\n",
2304                                 context);
2305                         BUG();
2306                 }
2307
2308                 cmd = instance->cmd_list[context];
2309
2310                 megasas_complete_cmd(instance, cmd, DID_OK);
2311
2312                 consumer++;
2313                 if (consumer == (instance->max_fw_cmds + 1)) {
2314                         consumer = 0;
2315                 }
2316         }
2317
2318         *instance->consumer = cpu_to_le32(producer);
2319
2320         spin_unlock_irqrestore(&instance->completion_lock, flags);
2321
2322         /*
2323          * Check if we can restore can_queue
2324          */
2325         megasas_check_and_restore_queue_depth(instance);
2326 }
2327
2328 static void megasas_sriov_heartbeat_handler(struct timer_list *t);
2329
2330 /**
2331  * megasas_start_timer - Initializes sriov heartbeat timer object
2332  * @instance:           Adapter soft state
2333  *
2334  */
2335 void megasas_start_timer(struct megasas_instance *instance)
2336 {
2337         struct timer_list *timer = &instance->sriov_heartbeat_timer;
2338
2339         timer_setup(timer, megasas_sriov_heartbeat_handler, 0);
2340         timer->expires = jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF;
2341         add_timer(timer);
2342 }
2343
2344 static void
2345 megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
2346
2347 static void
2348 process_fw_state_change_wq(struct work_struct *work);
2349
2350 static void megasas_do_ocr(struct megasas_instance *instance)
2351 {
2352         if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
2353         (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
2354         (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
2355                 *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
2356         }
2357         instance->instancet->disable_intr(instance);
2358         atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
2359         instance->issuepend_done = 0;
2360
2361         atomic_set(&instance->fw_outstanding, 0);
2362         megasas_internal_reset_defer_cmds(instance);
2363         process_fw_state_change_wq(&instance->work_init);
2364 }
2365
2366 static int megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance,
2367                                             int initial)
2368 {
2369         struct megasas_cmd *cmd;
2370         struct megasas_dcmd_frame *dcmd;
2371         struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL;
2372         dma_addr_t new_affiliation_111_h;
2373         int ld, retval = 0;
2374         u8 thisVf;
2375
2376         cmd = megasas_get_cmd(instance);
2377
2378         if (!cmd) {
2379                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation_111:"
2380                        "Failed to get cmd for scsi%d\n",
2381                         instance->host->host_no);
2382                 return -ENOMEM;
2383         }
2384
2385         dcmd = &cmd->frame->dcmd;
2386
2387         if (!instance->vf_affiliation_111) {
2388                 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2389                        "affiliation for scsi%d\n", instance->host->host_no);
2390                 megasas_return_cmd(instance, cmd);
2391                 return -ENOMEM;
2392         }
2393
2394         if (initial)
2395                         memset(instance->vf_affiliation_111, 0,
2396                                sizeof(struct MR_LD_VF_AFFILIATION_111));
2397         else {
2398                 new_affiliation_111 =
2399                         dma_alloc_coherent(&instance->pdev->dev,
2400                                            sizeof(struct MR_LD_VF_AFFILIATION_111),
2401                                            &new_affiliation_111_h, GFP_KERNEL);
2402                 if (!new_affiliation_111) {
2403                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2404                                "memory for new affiliation for scsi%d\n",
2405                                instance->host->host_no);
2406                         megasas_return_cmd(instance, cmd);
2407                         return -ENOMEM;
2408                 }
2409         }
2410
2411         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2412
2413         dcmd->cmd = MFI_CMD_DCMD;
2414         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2415         dcmd->sge_count = 1;
2416         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2417         dcmd->timeout = 0;
2418         dcmd->pad_0 = 0;
2419         dcmd->data_xfer_len =
2420                 cpu_to_le32(sizeof(struct MR_LD_VF_AFFILIATION_111));
2421         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111);
2422
2423         if (initial)
2424                 dcmd->sgl.sge32[0].phys_addr =
2425                         cpu_to_le32(instance->vf_affiliation_111_h);
2426         else
2427                 dcmd->sgl.sge32[0].phys_addr =
2428                         cpu_to_le32(new_affiliation_111_h);
2429
2430         dcmd->sgl.sge32[0].length = cpu_to_le32(
2431                 sizeof(struct MR_LD_VF_AFFILIATION_111));
2432
2433         dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2434                "scsi%d\n", instance->host->host_no);
2435
2436         if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2437                 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2438                        " failed with status 0x%x for scsi%d\n",
2439                        dcmd->cmd_status, instance->host->host_no);
2440                 retval = 1; /* Do a scan if we couldn't get affiliation */
2441                 goto out;
2442         }
2443
2444         if (!initial) {
2445                 thisVf = new_affiliation_111->thisVf;
2446                 for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++)
2447                         if (instance->vf_affiliation_111->map[ld].policy[thisVf] !=
2448                             new_affiliation_111->map[ld].policy[thisVf]) {
2449                                 dev_warn(&instance->pdev->dev, "SR-IOV: "
2450                                        "Got new LD/VF affiliation for scsi%d\n",
2451                                        instance->host->host_no);
2452                                 memcpy(instance->vf_affiliation_111,
2453                                        new_affiliation_111,
2454                                        sizeof(struct MR_LD_VF_AFFILIATION_111));
2455                                 retval = 1;
2456                                 goto out;
2457                         }
2458         }
2459 out:
2460         if (new_affiliation_111) {
2461                 dma_free_coherent(&instance->pdev->dev,
2462                                     sizeof(struct MR_LD_VF_AFFILIATION_111),
2463                                     new_affiliation_111,
2464                                     new_affiliation_111_h);
2465         }
2466
2467         megasas_return_cmd(instance, cmd);
2468
2469         return retval;
2470 }
2471
2472 static int megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance,
2473                                             int initial)
2474 {
2475         struct megasas_cmd *cmd;
2476         struct megasas_dcmd_frame *dcmd;
2477         struct MR_LD_VF_AFFILIATION *new_affiliation = NULL;
2478         struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL;
2479         dma_addr_t new_affiliation_h;
2480         int i, j, retval = 0, found = 0, doscan = 0;
2481         u8 thisVf;
2482
2483         cmd = megasas_get_cmd(instance);
2484
2485         if (!cmd) {
2486                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation12: "
2487                        "Failed to get cmd for scsi%d\n",
2488                        instance->host->host_no);
2489                 return -ENOMEM;
2490         }
2491
2492         dcmd = &cmd->frame->dcmd;
2493
2494         if (!instance->vf_affiliation) {
2495                 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2496                        "affiliation for scsi%d\n", instance->host->host_no);
2497                 megasas_return_cmd(instance, cmd);
2498                 return -ENOMEM;
2499         }
2500
2501         if (initial)
2502                 memset(instance->vf_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
2503                        sizeof(struct MR_LD_VF_AFFILIATION));
2504         else {
2505                 new_affiliation =
2506                         dma_alloc_coherent(&instance->pdev->dev,
2507                                            (MAX_LOGICAL_DRIVES + 1) * sizeof(struct MR_LD_VF_AFFILIATION),
2508                                            &new_affiliation_h, GFP_KERNEL);
2509                 if (!new_affiliation) {
2510                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2511                                "memory for new affiliation for scsi%d\n",
2512                                instance->host->host_no);
2513                         megasas_return_cmd(instance, cmd);
2514                         return -ENOMEM;
2515                 }
2516         }
2517
2518         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2519
2520         dcmd->cmd = MFI_CMD_DCMD;
2521         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2522         dcmd->sge_count = 1;
2523         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2524         dcmd->timeout = 0;
2525         dcmd->pad_0 = 0;
2526         dcmd->data_xfer_len = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2527                 sizeof(struct MR_LD_VF_AFFILIATION));
2528         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS);
2529
2530         if (initial)
2531                 dcmd->sgl.sge32[0].phys_addr =
2532                         cpu_to_le32(instance->vf_affiliation_h);
2533         else
2534                 dcmd->sgl.sge32[0].phys_addr =
2535                         cpu_to_le32(new_affiliation_h);
2536
2537         dcmd->sgl.sge32[0].length = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2538                 sizeof(struct MR_LD_VF_AFFILIATION));
2539
2540         dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2541                "scsi%d\n", instance->host->host_no);
2542
2543
2544         if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2545                 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2546                        " failed with status 0x%x for scsi%d\n",
2547                        dcmd->cmd_status, instance->host->host_no);
2548                 retval = 1; /* Do a scan if we couldn't get affiliation */
2549                 goto out;
2550         }
2551
2552         if (!initial) {
2553                 if (!new_affiliation->ldCount) {
2554                         dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2555                                "affiliation for passive path for scsi%d\n",
2556                                instance->host->host_no);
2557                         retval = 1;
2558                         goto out;
2559                 }
2560                 newmap = new_affiliation->map;
2561                 savedmap = instance->vf_affiliation->map;
2562                 thisVf = new_affiliation->thisVf;
2563                 for (i = 0 ; i < new_affiliation->ldCount; i++) {
2564                         found = 0;
2565                         for (j = 0; j < instance->vf_affiliation->ldCount;
2566                              j++) {
2567                                 if (newmap->ref.targetId ==
2568                                     savedmap->ref.targetId) {
2569                                         found = 1;
2570                                         if (newmap->policy[thisVf] !=
2571                                             savedmap->policy[thisVf]) {
2572                                                 doscan = 1;
2573                                                 goto out;
2574                                         }
2575                                 }
2576                                 savedmap = (struct MR_LD_VF_MAP *)
2577                                         ((unsigned char *)savedmap +
2578                                          savedmap->size);
2579                         }
2580                         if (!found && newmap->policy[thisVf] !=
2581                             MR_LD_ACCESS_HIDDEN) {
2582                                 doscan = 1;
2583                                 goto out;
2584                         }
2585                         newmap = (struct MR_LD_VF_MAP *)
2586                                 ((unsigned char *)newmap + newmap->size);
2587                 }
2588
2589                 newmap = new_affiliation->map;
2590                 savedmap = instance->vf_affiliation->map;
2591
2592                 for (i = 0 ; i < instance->vf_affiliation->ldCount; i++) {
2593                         found = 0;
2594                         for (j = 0 ; j < new_affiliation->ldCount; j++) {
2595                                 if (savedmap->ref.targetId ==
2596                                     newmap->ref.targetId) {
2597                                         found = 1;
2598                                         if (savedmap->policy[thisVf] !=
2599                                             newmap->policy[thisVf]) {
2600                                                 doscan = 1;
2601                                                 goto out;
2602                                         }
2603                                 }
2604                                 newmap = (struct MR_LD_VF_MAP *)
2605                                         ((unsigned char *)newmap +
2606                                          newmap->size);
2607                         }
2608                         if (!found && savedmap->policy[thisVf] !=
2609                             MR_LD_ACCESS_HIDDEN) {
2610                                 doscan = 1;
2611                                 goto out;
2612                         }
2613                         savedmap = (struct MR_LD_VF_MAP *)
2614                                 ((unsigned char *)savedmap +
2615                                  savedmap->size);
2616                 }
2617         }
2618 out:
2619         if (doscan) {
2620                 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2621                        "affiliation for scsi%d\n", instance->host->host_no);
2622                 memcpy(instance->vf_affiliation, new_affiliation,
2623                        new_affiliation->size);
2624                 retval = 1;
2625         }
2626
2627         if (new_affiliation)
2628                 dma_free_coherent(&instance->pdev->dev,
2629                                     (MAX_LOGICAL_DRIVES + 1) *
2630                                     sizeof(struct MR_LD_VF_AFFILIATION),
2631                                     new_affiliation, new_affiliation_h);
2632         megasas_return_cmd(instance, cmd);
2633
2634         return retval;
2635 }
2636
2637 /* This function will get the current SR-IOV LD/VF affiliation */
2638 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
2639         int initial)
2640 {
2641         int retval;
2642
2643         if (instance->PlasmaFW111)
2644                 retval = megasas_get_ld_vf_affiliation_111(instance, initial);
2645         else
2646                 retval = megasas_get_ld_vf_affiliation_12(instance, initial);
2647         return retval;
2648 }
2649
2650 /* This function will tell FW to start the SR-IOV heartbeat */
2651 int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
2652                                          int initial)
2653 {
2654         struct megasas_cmd *cmd;
2655         struct megasas_dcmd_frame *dcmd;
2656         int retval = 0;
2657
2658         cmd = megasas_get_cmd(instance);
2659
2660         if (!cmd) {
2661                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_sriov_start_heartbeat: "
2662                        "Failed to get cmd for scsi%d\n",
2663                        instance->host->host_no);
2664                 return -ENOMEM;
2665         }
2666
2667         dcmd = &cmd->frame->dcmd;
2668
2669         if (initial) {
2670                 instance->hb_host_mem =
2671                         dma_alloc_coherent(&instance->pdev->dev,
2672                                            sizeof(struct MR_CTRL_HB_HOST_MEM),
2673                                            &instance->hb_host_mem_h,
2674                                            GFP_KERNEL);
2675                 if (!instance->hb_host_mem) {
2676                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate"
2677                                " memory for heartbeat host memory for scsi%d\n",
2678                                instance->host->host_no);
2679                         retval = -ENOMEM;
2680                         goto out;
2681                 }
2682         }
2683
2684         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2685
2686         dcmd->mbox.s[0] = cpu_to_le16(sizeof(struct MR_CTRL_HB_HOST_MEM));
2687         dcmd->cmd = MFI_CMD_DCMD;
2688         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2689         dcmd->sge_count = 1;
2690         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2691         dcmd->timeout = 0;
2692         dcmd->pad_0 = 0;
2693         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM));
2694         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC);
2695
2696         megasas_set_dma_settings(instance, dcmd, instance->hb_host_mem_h,
2697                                  sizeof(struct MR_CTRL_HB_HOST_MEM));
2698
2699         dev_warn(&instance->pdev->dev, "SR-IOV: Starting heartbeat for scsi%d\n",
2700                instance->host->host_no);
2701
2702         if ((instance->adapter_type != MFI_SERIES) &&
2703             !instance->mask_interrupts)
2704                 retval = megasas_issue_blocked_cmd(instance, cmd,
2705                         MEGASAS_ROUTINE_WAIT_TIME_VF);
2706         else
2707                 retval = megasas_issue_polled(instance, cmd);
2708
2709         if (retval) {
2710                 dev_warn(&instance->pdev->dev, "SR-IOV: MR_DCMD_CTRL_SHARED_HOST"
2711                         "_MEM_ALLOC DCMD %s for scsi%d\n",
2712                         (dcmd->cmd_status == MFI_STAT_INVALID_STATUS) ?
2713                         "timed out" : "failed", instance->host->host_no);
2714                 retval = 1;
2715         }
2716
2717 out:
2718         megasas_return_cmd(instance, cmd);
2719
2720         return retval;
2721 }
2722
2723 /* Handler for SR-IOV heartbeat */
2724 static void megasas_sriov_heartbeat_handler(struct timer_list *t)
2725 {
2726         struct megasas_instance *instance =
2727                 from_timer(instance, t, sriov_heartbeat_timer);
2728
2729         if (instance->hb_host_mem->HB.fwCounter !=
2730             instance->hb_host_mem->HB.driverCounter) {
2731                 instance->hb_host_mem->HB.driverCounter =
2732                         instance->hb_host_mem->HB.fwCounter;
2733                 mod_timer(&instance->sriov_heartbeat_timer,
2734                           jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
2735         } else {
2736                 dev_warn(&instance->pdev->dev, "SR-IOV: Heartbeat never "
2737                        "completed for scsi%d\n", instance->host->host_no);
2738                 schedule_work(&instance->work_init);
2739         }
2740 }
2741
2742 /**
2743  * megasas_wait_for_outstanding -       Wait for all outstanding cmds
2744  * @instance:                           Adapter soft state
2745  *
2746  * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to
2747  * complete all its outstanding commands. Returns error if one or more IOs
2748  * are pending after this time period. It also marks the controller dead.
2749  */
2750 static int megasas_wait_for_outstanding(struct megasas_instance *instance)
2751 {
2752         int i, sl, outstanding;
2753         u32 reset_index;
2754         u32 wait_time = MEGASAS_RESET_WAIT_TIME;
2755         unsigned long flags;
2756         struct list_head clist_local;
2757         struct megasas_cmd *reset_cmd;
2758         u32 fw_state;
2759
2760         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2761                 dev_info(&instance->pdev->dev, "%s:%d HBA is killed.\n",
2762                 __func__, __LINE__);
2763                 return FAILED;
2764         }
2765
2766         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2767
2768                 INIT_LIST_HEAD(&clist_local);
2769                 spin_lock_irqsave(&instance->hba_lock, flags);
2770                 list_splice_init(&instance->internal_reset_pending_q,
2771                                 &clist_local);
2772                 spin_unlock_irqrestore(&instance->hba_lock, flags);
2773
2774                 dev_notice(&instance->pdev->dev, "HBA reset wait ...\n");
2775                 for (i = 0; i < wait_time; i++) {
2776                         msleep(1000);
2777                         if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL)
2778                                 break;
2779                 }
2780
2781                 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2782                         dev_notice(&instance->pdev->dev, "reset: Stopping HBA.\n");
2783                         atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2784                         return FAILED;
2785                 }
2786
2787                 reset_index = 0;
2788                 while (!list_empty(&clist_local)) {
2789                         reset_cmd = list_entry((&clist_local)->next,
2790                                                 struct megasas_cmd, list);
2791                         list_del_init(&reset_cmd->list);
2792                         if (reset_cmd->scmd) {
2793                                 reset_cmd->scmd->result = DID_REQUEUE << 16;
2794                                 dev_notice(&instance->pdev->dev, "%d:%p reset [%02x]\n",
2795                                         reset_index, reset_cmd,
2796                                         reset_cmd->scmd->cmnd[0]);
2797
2798                                 scsi_done(reset_cmd->scmd);
2799                                 megasas_return_cmd(instance, reset_cmd);
2800                         } else if (reset_cmd->sync_cmd) {
2801                                 dev_notice(&instance->pdev->dev, "%p synch cmds"
2802                                                 "reset queue\n",
2803                                                 reset_cmd);
2804
2805                                 reset_cmd->cmd_status_drv = DCMD_INIT;
2806                                 instance->instancet->fire_cmd(instance,
2807                                                 reset_cmd->frame_phys_addr,
2808                                                 0, instance->reg_set);
2809                         } else {
2810                                 dev_notice(&instance->pdev->dev, "%p unexpected"
2811                                         "cmds lst\n",
2812                                         reset_cmd);
2813                         }
2814                         reset_index++;
2815                 }
2816
2817                 return SUCCESS;
2818         }
2819
2820         for (i = 0; i < resetwaittime; i++) {
2821                 outstanding = atomic_read(&instance->fw_outstanding);
2822
2823                 if (!outstanding)
2824                         break;
2825
2826                 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2827                         dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
2828                                "commands to complete\n",i,outstanding);
2829                         /*
2830                          * Call cmd completion routine. Cmd to be
2831                          * be completed directly without depending on isr.
2832                          */
2833                         megasas_complete_cmd_dpc((unsigned long)instance);
2834                 }
2835
2836                 msleep(1000);
2837         }
2838
2839         i = 0;
2840         outstanding = atomic_read(&instance->fw_outstanding);
2841         fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK;
2842
2843         if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2844                 goto no_outstanding;
2845
2846         if (instance->disableOnlineCtrlReset)
2847                 goto kill_hba_and_failed;
2848         do {
2849                 if ((fw_state == MFI_STATE_FAULT) || atomic_read(&instance->fw_outstanding)) {
2850                         dev_info(&instance->pdev->dev,
2851                                 "%s:%d waiting_for_outstanding: before issue OCR. FW state = 0x%x, outstanding 0x%x\n",
2852                                 __func__, __LINE__, fw_state, atomic_read(&instance->fw_outstanding));
2853                         if (i == 3)
2854                                 goto kill_hba_and_failed;
2855                         megasas_do_ocr(instance);
2856
2857                         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2858                                 dev_info(&instance->pdev->dev, "%s:%d OCR failed and HBA is killed.\n",
2859                                 __func__, __LINE__);
2860                                 return FAILED;
2861                         }
2862                         dev_info(&instance->pdev->dev, "%s:%d waiting_for_outstanding: after issue OCR.\n",
2863                                 __func__, __LINE__);
2864
2865                         for (sl = 0; sl < 10; sl++)
2866                                 msleep(500);
2867
2868                         outstanding = atomic_read(&instance->fw_outstanding);
2869
2870                         fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK;
2871                         if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2872                                 goto no_outstanding;
2873                 }
2874                 i++;
2875         } while (i <= 3);
2876
2877 no_outstanding:
2878
2879         dev_info(&instance->pdev->dev, "%s:%d no more pending commands remain after reset handling.\n",
2880                 __func__, __LINE__);
2881         return SUCCESS;
2882
2883 kill_hba_and_failed:
2884
2885         /* Reset not supported, kill adapter */
2886         dev_info(&instance->pdev->dev, "%s:%d killing adapter scsi%d"
2887                 " disableOnlineCtrlReset %d fw_outstanding %d \n",
2888                 __func__, __LINE__, instance->host->host_no, instance->disableOnlineCtrlReset,
2889                 atomic_read(&instance->fw_outstanding));
2890         megasas_dump_pending_frames(instance);
2891         megaraid_sas_kill_hba(instance);
2892
2893         return FAILED;
2894 }
2895
2896 /**
2897  * megasas_generic_reset -      Generic reset routine
2898  * @scmd:                       Mid-layer SCSI command
2899  *
2900  * This routine implements a generic reset handler for device, bus and host
2901  * reset requests. Device, bus and host specific reset handlers can use this
2902  * function after they do their specific tasks.
2903  */
2904 static int megasas_generic_reset(struct scsi_cmnd *scmd)
2905 {
2906         int ret_val;
2907         struct megasas_instance *instance;
2908
2909         instance = (struct megasas_instance *)scmd->device->host->hostdata;
2910
2911         scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n",
2912                  scmd->cmnd[0], scmd->retries);
2913
2914         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2915                 dev_err(&instance->pdev->dev, "cannot recover from previous reset failures\n");
2916                 return FAILED;
2917         }
2918
2919         ret_val = megasas_wait_for_outstanding(instance);
2920         if (ret_val == SUCCESS)
2921                 dev_notice(&instance->pdev->dev, "reset successful\n");
2922         else
2923                 dev_err(&instance->pdev->dev, "failed to do reset\n");
2924
2925         return ret_val;
2926 }
2927
2928 /**
2929  * megasas_reset_timer - quiesce the adapter if required
2930  * @scmd:               scsi cmnd
2931  *
2932  * Sets the FW busy flag and reduces the host->can_queue if the
2933  * cmd has not been completed within the timeout period.
2934  */
2935 static enum scsi_timeout_action megasas_reset_timer(struct scsi_cmnd *scmd)
2936 {
2937         struct megasas_instance *instance;
2938         unsigned long flags;
2939
2940         if (time_after(jiffies, scmd->jiffies_at_alloc +
2941                                 (scmd_timeout * 2) * HZ)) {
2942                 return SCSI_EH_NOT_HANDLED;
2943         }
2944
2945         instance = (struct megasas_instance *)scmd->device->host->hostdata;
2946         if (!(instance->flag & MEGASAS_FW_BUSY)) {
2947                 /* FW is busy, throttle IO */
2948                 spin_lock_irqsave(instance->host->host_lock, flags);
2949
2950                 instance->host->can_queue = instance->throttlequeuedepth;
2951                 instance->last_time = jiffies;
2952                 instance->flag |= MEGASAS_FW_BUSY;
2953
2954                 spin_unlock_irqrestore(instance->host->host_lock, flags);
2955         }
2956         return SCSI_EH_RESET_TIMER;
2957 }
2958
2959 /**
2960  * megasas_dump -       This function will print hexdump of provided buffer.
2961  * @buf:                Buffer to be dumped
2962  * @sz:         Size in bytes
2963  * @format:             Different formats of dumping e.g. format=n will
2964  *                      cause only 'n' 32 bit words to be dumped in a single
2965  *                      line.
2966  */
2967 inline void
2968 megasas_dump(void *buf, int sz, int format)
2969 {
2970         int i;
2971         __le32 *buf_loc = (__le32 *)buf;
2972
2973         for (i = 0; i < (sz / sizeof(__le32)); i++) {
2974                 if ((i % format) == 0) {
2975                         if (i != 0)
2976                                 printk(KERN_CONT "\n");
2977                         printk(KERN_CONT "%08x: ", (i * 4));
2978                 }
2979                 printk(KERN_CONT "%08x ", le32_to_cpu(buf_loc[i]));
2980         }
2981         printk(KERN_CONT "\n");
2982 }
2983
2984 /**
2985  * megasas_dump_reg_set -       This function will print hexdump of register set
2986  * @reg_set:    Register set to be dumped
2987  */
2988 inline void
2989 megasas_dump_reg_set(void __iomem *reg_set)
2990 {
2991         unsigned int i, sz = 256;
2992         u32 __iomem *reg = (u32 __iomem *)reg_set;
2993
2994         for (i = 0; i < (sz / sizeof(u32)); i++)
2995                 printk("%08x: %08x\n", (i * 4), readl(&reg[i]));
2996 }
2997
2998 /**
2999  * megasas_dump_fusion_io -     This function will print key details
3000  *                              of SCSI IO
3001  * @scmd:                       SCSI command pointer of SCSI IO
3002  */
3003 void
3004 megasas_dump_fusion_io(struct scsi_cmnd *scmd)
3005 {
3006         struct megasas_cmd_fusion *cmd = megasas_priv(scmd)->cmd_priv;
3007         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
3008         struct megasas_instance *instance;
3009
3010         instance = (struct megasas_instance *)scmd->device->host->hostdata;
3011
3012         scmd_printk(KERN_INFO, scmd,
3013                     "scmd: (0x%p)  retries: 0x%x  allowed: 0x%x\n",
3014                     scmd, scmd->retries, scmd->allowed);
3015         scsi_print_command(scmd);
3016
3017         if (cmd) {
3018                 req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc;
3019                 scmd_printk(KERN_INFO, scmd, "Request descriptor details:\n");
3020                 scmd_printk(KERN_INFO, scmd,
3021                             "RequestFlags:0x%x  MSIxIndex:0x%x  SMID:0x%x  LMID:0x%x  DevHandle:0x%x\n",
3022                             req_desc->SCSIIO.RequestFlags,
3023                             req_desc->SCSIIO.MSIxIndex, req_desc->SCSIIO.SMID,
3024                             req_desc->SCSIIO.LMID, req_desc->SCSIIO.DevHandle);
3025
3026                 printk(KERN_INFO "IO request frame:\n");
3027                 megasas_dump(cmd->io_request,
3028                              MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE, 8);
3029                 printk(KERN_INFO "Chain frame:\n");
3030                 megasas_dump(cmd->sg_frame,
3031                              instance->max_chain_frame_sz, 8);
3032         }
3033
3034 }
3035
3036 /*
3037  * megasas_dump_sys_regs - This function will dump system registers through
3038  *                          sysfs.
3039  * @reg_set:                Pointer to System register set.
3040  * @buf:                    Buffer to which output is to be written.
3041  * @return:                 Number of bytes written to buffer.
3042  */
3043 static inline ssize_t
3044 megasas_dump_sys_regs(void __iomem *reg_set, char *buf)
3045 {
3046         unsigned int i, sz = 256;
3047         int bytes_wrote = 0;
3048         char *loc = (char *)buf;
3049         u32 __iomem *reg = (u32 __iomem *)reg_set;
3050
3051         for (i = 0; i < sz / sizeof(u32); i++) {
3052                 bytes_wrote += scnprintf(loc + bytes_wrote,
3053                                          PAGE_SIZE - bytes_wrote,
3054                                          "%08x: %08x\n", (i * 4),
3055                                          readl(&reg[i]));
3056         }
3057         return bytes_wrote;
3058 }
3059
3060 /**
3061  * megasas_reset_bus_host -     Bus & host reset handler entry point
3062  * @scmd:                       Mid-layer SCSI command
3063  */
3064 static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
3065 {
3066         int ret;
3067         struct megasas_instance *instance;
3068
3069         instance = (struct megasas_instance *)scmd->device->host->hostdata;
3070
3071         scmd_printk(KERN_INFO, scmd,
3072                 "OCR is requested due to IO timeout!!\n");
3073
3074         scmd_printk(KERN_INFO, scmd,
3075                 "SCSI host state: %d  SCSI host busy: %d  FW outstanding: %d\n",
3076                 scmd->device->host->shost_state,
3077                 scsi_host_busy(scmd->device->host),
3078                 atomic_read(&instance->fw_outstanding));
3079         /*
3080          * First wait for all commands to complete
3081          */
3082         if (instance->adapter_type == MFI_SERIES) {
3083                 ret = megasas_generic_reset(scmd);
3084         } else {
3085                 megasas_dump_fusion_io(scmd);
3086                 ret = megasas_reset_fusion(scmd->device->host,
3087                                 SCSIIO_TIMEOUT_OCR);
3088         }
3089
3090         return ret;
3091 }
3092
3093 /**
3094  * megasas_task_abort - Issues task abort request to firmware
3095  *                      (supported only for fusion adapters)
3096  * @scmd:               SCSI command pointer
3097  */
3098 static int megasas_task_abort(struct scsi_cmnd *scmd)
3099 {
3100         int ret;
3101         struct megasas_instance *instance;
3102
3103         instance = (struct megasas_instance *)scmd->device->host->hostdata;
3104
3105         if (instance->adapter_type != MFI_SERIES)
3106                 ret = megasas_task_abort_fusion(scmd);
3107         else {
3108                 sdev_printk(KERN_NOTICE, scmd->device, "TASK ABORT not supported\n");
3109                 ret = FAILED;
3110         }
3111
3112         return ret;
3113 }
3114
3115 /**
3116  * megasas_reset_target:  Issues target reset request to firmware
3117  *                        (supported only for fusion adapters)
3118  * @scmd:                 SCSI command pointer
3119  */
3120 static int megasas_reset_target(struct scsi_cmnd *scmd)
3121 {
3122         int ret;
3123         struct megasas_instance *instance;
3124
3125         instance = (struct megasas_instance *)scmd->device->host->hostdata;
3126
3127         if (instance->adapter_type != MFI_SERIES)
3128                 ret = megasas_reset_target_fusion(scmd);
3129         else {
3130                 sdev_printk(KERN_NOTICE, scmd->device, "TARGET RESET not supported\n");
3131                 ret = FAILED;
3132         }
3133
3134         return ret;
3135 }
3136
3137 /**
3138  * megasas_bios_param - Returns disk geometry for a disk
3139  * @sdev:               device handle
3140  * @bdev:               block device
3141  * @capacity:           drive capacity
3142  * @geom:               geometry parameters
3143  */
3144 static int
3145 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
3146                  sector_t capacity, int geom[])
3147 {
3148         int heads;
3149         int sectors;
3150         sector_t cylinders;
3151         unsigned long tmp;
3152
3153         /* Default heads (64) & sectors (32) */
3154         heads = 64;
3155         sectors = 32;
3156
3157         tmp = heads * sectors;
3158         cylinders = capacity;
3159
3160         sector_div(cylinders, tmp);
3161
3162         /*
3163          * Handle extended translation size for logical drives > 1Gb
3164          */
3165
3166         if (capacity >= 0x200000) {
3167                 heads = 255;
3168                 sectors = 63;
3169                 tmp = heads*sectors;
3170                 cylinders = capacity;
3171                 sector_div(cylinders, tmp);
3172         }
3173
3174         geom[0] = heads;
3175         geom[1] = sectors;
3176         geom[2] = cylinders;
3177
3178         return 0;
3179 }
3180
3181 static void megasas_map_queues(struct Scsi_Host *shost)
3182 {
3183         struct megasas_instance *instance;
3184         int qoff = 0, offset;
3185         struct blk_mq_queue_map *map;
3186
3187         instance = (struct megasas_instance *)shost->hostdata;
3188
3189         if (shost->nr_hw_queues == 1)
3190                 return;
3191
3192         offset = instance->low_latency_index_start;
3193
3194         /* Setup Default hctx */
3195         map = &shost->tag_set.map[HCTX_TYPE_DEFAULT];
3196         map->nr_queues = instance->msix_vectors - offset;
3197         map->queue_offset = 0;
3198         blk_mq_pci_map_queues(map, instance->pdev, offset);
3199         qoff += map->nr_queues;
3200         offset += map->nr_queues;
3201
3202         /* we never use READ queue, so can't cheat blk-mq */
3203         shost->tag_set.map[HCTX_TYPE_READ].nr_queues = 0;
3204
3205         /* Setup Poll hctx */
3206         map = &shost->tag_set.map[HCTX_TYPE_POLL];
3207         map->nr_queues = instance->iopoll_q_count;
3208         if (map->nr_queues) {
3209                 /*
3210                  * The poll queue(s) doesn't have an IRQ (and hence IRQ
3211                  * affinity), so use the regular blk-mq cpu mapping
3212                  */
3213                 map->queue_offset = qoff;
3214                 blk_mq_map_queues(map);
3215         }
3216 }
3217
3218 static void megasas_aen_polling(struct work_struct *work);
3219
3220 /**
3221  * megasas_service_aen -        Processes an event notification
3222  * @instance:                   Adapter soft state
3223  * @cmd:                        AEN command completed by the ISR
3224  *
3225  * For AEN, driver sends a command down to FW that is held by the FW till an
3226  * event occurs. When an event of interest occurs, FW completes the command
3227  * that it was previously holding.
3228  *
3229  * This routines sends SIGIO signal to processes that have registered with the
3230  * driver for AEN.
3231  */
3232 static void
3233 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
3234 {
3235         unsigned long flags;
3236
3237         /*
3238          * Don't signal app if it is just an aborted previously registered aen
3239          */
3240         if ((!cmd->abort_aen) && (instance->unload == 0)) {
3241                 spin_lock_irqsave(&poll_aen_lock, flags);
3242                 megasas_poll_wait_aen = 1;
3243                 spin_unlock_irqrestore(&poll_aen_lock, flags);
3244                 wake_up(&megasas_poll_wait);
3245                 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
3246         }
3247         else
3248                 cmd->abort_aen = 0;
3249
3250         instance->aen_cmd = NULL;
3251
3252         megasas_return_cmd(instance, cmd);
3253
3254         if ((instance->unload == 0) &&
3255                 ((instance->issuepend_done == 1))) {
3256                 struct megasas_aen_event *ev;
3257
3258                 ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
3259                 if (!ev) {
3260                         dev_err(&instance->pdev->dev, "megasas_service_aen: out of memory\n");
3261                 } else {
3262                         ev->instance = instance;
3263                         instance->ev = ev;
3264                         INIT_DELAYED_WORK(&ev->hotplug_work,
3265                                           megasas_aen_polling);
3266                         schedule_delayed_work(&ev->hotplug_work, 0);
3267                 }
3268         }
3269 }
3270
3271 static ssize_t
3272 fw_crash_buffer_store(struct device *cdev,
3273         struct device_attribute *attr, const char *buf, size_t count)
3274 {
3275         struct Scsi_Host *shost = class_to_shost(cdev);
3276         struct megasas_instance *instance =
3277                 (struct megasas_instance *) shost->hostdata;
3278         int val = 0;
3279
3280         if (kstrtoint(buf, 0, &val) != 0)
3281                 return -EINVAL;
3282
3283         mutex_lock(&instance->crashdump_lock);
3284         instance->fw_crash_buffer_offset = val;
3285         mutex_unlock(&instance->crashdump_lock);
3286         return strlen(buf);
3287 }
3288
3289 static ssize_t
3290 fw_crash_buffer_show(struct device *cdev,
3291         struct device_attribute *attr, char *buf)
3292 {
3293         struct Scsi_Host *shost = class_to_shost(cdev);
3294         struct megasas_instance *instance =
3295                 (struct megasas_instance *) shost->hostdata;
3296         u32 size;
3297         unsigned long dmachunk = CRASH_DMA_BUF_SIZE;
3298         unsigned long chunk_left_bytes;
3299         unsigned long src_addr;
3300         u32 buff_offset;
3301
3302         mutex_lock(&instance->crashdump_lock);
3303         buff_offset = instance->fw_crash_buffer_offset;
3304         if (!instance->crash_dump_buf ||
3305                 !((instance->fw_crash_state == AVAILABLE) ||
3306                 (instance->fw_crash_state == COPYING))) {
3307                 dev_err(&instance->pdev->dev,
3308                         "Firmware crash dump is not available\n");
3309                 mutex_unlock(&instance->crashdump_lock);
3310                 return -EINVAL;
3311         }
3312
3313         if (buff_offset > (instance->fw_crash_buffer_size * dmachunk)) {
3314                 dev_err(&instance->pdev->dev,
3315                         "Firmware crash dump offset is out of range\n");
3316                 mutex_unlock(&instance->crashdump_lock);
3317                 return 0;
3318         }
3319
3320         size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset;
3321         chunk_left_bytes = dmachunk - (buff_offset % dmachunk);
3322         size = (size > chunk_left_bytes) ? chunk_left_bytes : size;
3323         size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size;
3324
3325         src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] +
3326                 (buff_offset % dmachunk);
3327         memcpy(buf, (void *)src_addr, size);
3328         mutex_unlock(&instance->crashdump_lock);
3329
3330         return size;
3331 }
3332
3333 static ssize_t
3334 fw_crash_buffer_size_show(struct device *cdev,
3335         struct device_attribute *attr, char *buf)
3336 {
3337         struct Scsi_Host *shost = class_to_shost(cdev);
3338         struct megasas_instance *instance =
3339                 (struct megasas_instance *) shost->hostdata;
3340
3341         return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)
3342                 ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE);
3343 }
3344
3345 static ssize_t
3346 fw_crash_state_store(struct device *cdev,
3347         struct device_attribute *attr, const char *buf, size_t count)
3348 {
3349         struct Scsi_Host *shost = class_to_shost(cdev);
3350         struct megasas_instance *instance =
3351                 (struct megasas_instance *) shost->hostdata;
3352         int val = 0;
3353
3354         if (kstrtoint(buf, 0, &val) != 0)
3355                 return -EINVAL;
3356
3357         if ((val <= AVAILABLE || val > COPY_ERROR)) {
3358                 dev_err(&instance->pdev->dev, "application updates invalid "
3359                         "firmware crash state\n");
3360                 return -EINVAL;
3361         }
3362
3363         instance->fw_crash_state = val;
3364
3365         if ((val == COPIED) || (val == COPY_ERROR)) {
3366                 mutex_lock(&instance->crashdump_lock);
3367                 megasas_free_host_crash_buffer(instance);
3368                 mutex_unlock(&instance->crashdump_lock);
3369                 if (val == COPY_ERROR)
3370                         dev_info(&instance->pdev->dev, "application failed to "
3371                                 "copy Firmware crash dump\n");
3372                 else
3373                         dev_info(&instance->pdev->dev, "Firmware crash dump "
3374                                 "copied successfully\n");
3375         }
3376         return strlen(buf);
3377 }
3378
3379 static ssize_t
3380 fw_crash_state_show(struct device *cdev,
3381         struct device_attribute *attr, char *buf)
3382 {
3383         struct Scsi_Host *shost = class_to_shost(cdev);
3384         struct megasas_instance *instance =
3385                 (struct megasas_instance *) shost->hostdata;
3386
3387         return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state);
3388 }
3389
3390 static ssize_t
3391 page_size_show(struct device *cdev,
3392         struct device_attribute *attr, char *buf)
3393 {
3394         return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1);
3395 }
3396
3397 static ssize_t
3398 ldio_outstanding_show(struct device *cdev, struct device_attribute *attr,
3399         char *buf)
3400 {
3401         struct Scsi_Host *shost = class_to_shost(cdev);
3402         struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3403
3404         return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->ldio_outstanding));
3405 }
3406
3407 static ssize_t
3408 fw_cmds_outstanding_show(struct device *cdev,
3409                                  struct device_attribute *attr, char *buf)
3410 {
3411         struct Scsi_Host *shost = class_to_shost(cdev);
3412         struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3413
3414         return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->fw_outstanding));
3415 }
3416
3417 static ssize_t
3418 enable_sdev_max_qd_show(struct device *cdev,
3419         struct device_attribute *attr, char *buf)
3420 {
3421         struct Scsi_Host *shost = class_to_shost(cdev);
3422         struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3423
3424         return snprintf(buf, PAGE_SIZE, "%d\n", instance->enable_sdev_max_qd);
3425 }
3426
3427 static ssize_t
3428 enable_sdev_max_qd_store(struct device *cdev,
3429         struct device_attribute *attr, const char *buf, size_t count)
3430 {
3431         struct Scsi_Host *shost = class_to_shost(cdev);
3432         struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3433         u32 val = 0;
3434         bool is_target_prop;
3435         int ret_target_prop = DCMD_FAILED;
3436         struct scsi_device *sdev;
3437
3438         if (kstrtou32(buf, 0, &val) != 0) {
3439                 pr_err("megasas: could not set enable_sdev_max_qd\n");
3440                 return -EINVAL;
3441         }
3442
3443         mutex_lock(&instance->reset_mutex);
3444         if (val)
3445                 instance->enable_sdev_max_qd = true;
3446         else
3447                 instance->enable_sdev_max_qd = false;
3448
3449         shost_for_each_device(sdev, shost) {
3450                 ret_target_prop = megasas_get_target_prop(instance, sdev);
3451                 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
3452                 megasas_set_fw_assisted_qd(sdev, is_target_prop);
3453         }
3454         mutex_unlock(&instance->reset_mutex);
3455
3456         return strlen(buf);
3457 }
3458
3459 static ssize_t
3460 dump_system_regs_show(struct device *cdev,
3461                                struct device_attribute *attr, char *buf)
3462 {
3463         struct Scsi_Host *shost = class_to_shost(cdev);
3464         struct megasas_instance *instance =
3465                         (struct megasas_instance *)shost->hostdata;
3466
3467         return megasas_dump_sys_regs(instance->reg_set, buf);
3468 }
3469
3470 static ssize_t
3471 raid_map_id_show(struct device *cdev, struct device_attribute *attr,
3472                           char *buf)
3473 {
3474         struct Scsi_Host *shost = class_to_shost(cdev);
3475         struct megasas_instance *instance =
3476                         (struct megasas_instance *)shost->hostdata;
3477
3478         return snprintf(buf, PAGE_SIZE, "%ld\n",
3479                         (unsigned long)instance->map_id);
3480 }
3481
3482 static DEVICE_ATTR_RW(fw_crash_buffer);
3483 static DEVICE_ATTR_RO(fw_crash_buffer_size);
3484 static DEVICE_ATTR_RW(fw_crash_state);
3485 static DEVICE_ATTR_RO(page_size);
3486 static DEVICE_ATTR_RO(ldio_outstanding);
3487 static DEVICE_ATTR_RO(fw_cmds_outstanding);
3488 static DEVICE_ATTR_RW(enable_sdev_max_qd);
3489 static DEVICE_ATTR_RO(dump_system_regs);
3490 static DEVICE_ATTR_RO(raid_map_id);
3491
3492 static struct attribute *megaraid_host_attrs[] = {
3493         &dev_attr_fw_crash_buffer_size.attr,
3494         &dev_attr_fw_crash_buffer.attr,
3495         &dev_attr_fw_crash_state.attr,
3496         &dev_attr_page_size.attr,
3497         &dev_attr_ldio_outstanding.attr,
3498         &dev_attr_fw_cmds_outstanding.attr,
3499         &dev_attr_enable_sdev_max_qd.attr,
3500         &dev_attr_dump_system_regs.attr,
3501         &dev_attr_raid_map_id.attr,
3502         NULL,
3503 };
3504
3505 ATTRIBUTE_GROUPS(megaraid_host);
3506
3507 /*
3508  * Scsi host template for megaraid_sas driver
3509  */
3510 static const struct scsi_host_template megasas_template = {
3511
3512         .module = THIS_MODULE,
3513         .name = "Avago SAS based MegaRAID driver",
3514         .proc_name = "megaraid_sas",
3515         .device_configure = megasas_device_configure,
3516         .slave_alloc = megasas_slave_alloc,
3517         .slave_destroy = megasas_slave_destroy,
3518         .queuecommand = megasas_queue_command,
3519         .eh_target_reset_handler = megasas_reset_target,
3520         .eh_abort_handler = megasas_task_abort,
3521         .eh_host_reset_handler = megasas_reset_bus_host,
3522         .eh_timed_out = megasas_reset_timer,
3523         .shost_groups = megaraid_host_groups,
3524         .bios_param = megasas_bios_param,
3525         .map_queues = megasas_map_queues,
3526         .mq_poll = megasas_blk_mq_poll,
3527         .change_queue_depth = scsi_change_queue_depth,
3528         .max_segment_size = 0xffffffff,
3529         .cmd_size = sizeof(struct megasas_cmd_priv),
3530 };
3531
3532 /**
3533  * megasas_complete_int_cmd -   Completes an internal command
3534  * @instance:                   Adapter soft state
3535  * @cmd:                        Command to be completed
3536  *
3537  * The megasas_issue_blocked_cmd() function waits for a command to complete
3538  * after it issues a command. This function wakes up that waiting routine by
3539  * calling wake_up() on the wait queue.
3540  */
3541 static void
3542 megasas_complete_int_cmd(struct megasas_instance *instance,
3543                          struct megasas_cmd *cmd)
3544 {
3545         if (cmd->cmd_status_drv == DCMD_INIT)
3546                 cmd->cmd_status_drv =
3547                 (cmd->frame->io.cmd_status == MFI_STAT_OK) ?
3548                 DCMD_SUCCESS : DCMD_FAILED;
3549
3550         wake_up(&instance->int_cmd_wait_q);
3551 }
3552
3553 /**
3554  * megasas_complete_abort -     Completes aborting a command
3555  * @instance:                   Adapter soft state
3556  * @cmd:                        Cmd that was issued to abort another cmd
3557  *
3558  * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
3559  * after it issues an abort on a previously issued command. This function
3560  * wakes up all functions waiting on the same wait queue.
3561  */
3562 static void
3563 megasas_complete_abort(struct megasas_instance *instance,
3564                        struct megasas_cmd *cmd)
3565 {
3566         if (cmd->sync_cmd) {
3567                 cmd->sync_cmd = 0;
3568                 cmd->cmd_status_drv = DCMD_SUCCESS;
3569                 wake_up(&instance->abort_cmd_wait_q);
3570         }
3571 }
3572
3573 static void
3574 megasas_set_ld_removed_by_fw(struct megasas_instance *instance)
3575 {
3576         uint i;
3577
3578         for (i = 0; (i < MEGASAS_MAX_LD_IDS); i++) {
3579                 if (instance->ld_ids_prev[i] != 0xff &&
3580                     instance->ld_ids_from_raidmap[i] == 0xff) {
3581                         if (megasas_dbg_lvl & LD_PD_DEBUG)
3582                                 dev_info(&instance->pdev->dev,
3583                                          "LD target ID %d removed from RAID map\n", i);
3584                         instance->ld_tgtid_status[i] = LD_TARGET_ID_DELETED;
3585                 }
3586         }
3587 }
3588
3589 /**
3590  * megasas_complete_cmd -       Completes a command
3591  * @instance:                   Adapter soft state
3592  * @cmd:                        Command to be completed
3593  * @alt_status:                 If non-zero, use this value as status to
3594  *                              SCSI mid-layer instead of the value returned
3595  *                              by the FW. This should be used if caller wants
3596  *                              an alternate status (as in the case of aborted
3597  *                              commands)
3598  */
3599 void
3600 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
3601                      u8 alt_status)
3602 {
3603         int exception = 0;
3604         struct megasas_header *hdr = &cmd->frame->hdr;
3605         unsigned long flags;
3606         struct fusion_context *fusion = instance->ctrl_context;
3607         u32 opcode, status;
3608
3609         /* flag for the retry reset */
3610         cmd->retry_for_fw_reset = 0;
3611
3612         if (cmd->scmd)
3613                 megasas_priv(cmd->scmd)->cmd_priv = NULL;
3614
3615         switch (hdr->cmd) {
3616         case MFI_CMD_INVALID:
3617                 /* Some older 1068 controller FW may keep a pended
3618                    MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel
3619                    when booting the kdump kernel.  Ignore this command to
3620                    prevent a kernel panic on shutdown of the kdump kernel. */
3621                 dev_warn(&instance->pdev->dev, "MFI_CMD_INVALID command "
3622                        "completed\n");
3623                 dev_warn(&instance->pdev->dev, "If you have a controller "
3624                        "other than PERC5, please upgrade your firmware\n");
3625                 break;
3626         case MFI_CMD_PD_SCSI_IO:
3627         case MFI_CMD_LD_SCSI_IO:
3628
3629                 /*
3630                  * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
3631                  * issued either through an IO path or an IOCTL path. If it
3632                  * was via IOCTL, we will send it to internal completion.
3633                  */
3634                 if (cmd->sync_cmd) {
3635                         cmd->sync_cmd = 0;
3636                         megasas_complete_int_cmd(instance, cmd);
3637                         break;
3638                 }
3639                 fallthrough;
3640
3641         case MFI_CMD_LD_READ:
3642         case MFI_CMD_LD_WRITE:
3643
3644                 if (alt_status) {
3645                         cmd->scmd->result = alt_status << 16;
3646                         exception = 1;
3647                 }
3648
3649                 if (exception) {
3650
3651                         atomic_dec(&instance->fw_outstanding);
3652
3653                         scsi_dma_unmap(cmd->scmd);
3654                         scsi_done(cmd->scmd);
3655                         megasas_return_cmd(instance, cmd);
3656
3657                         break;
3658                 }
3659
3660                 switch (hdr->cmd_status) {
3661
3662                 case MFI_STAT_OK:
3663                         cmd->scmd->result = DID_OK << 16;
3664                         break;
3665
3666                 case MFI_STAT_SCSI_IO_FAILED:
3667                 case MFI_STAT_LD_INIT_IN_PROGRESS:
3668                         cmd->scmd->result =
3669                             (DID_ERROR << 16) | hdr->scsi_status;
3670                         break;
3671
3672                 case MFI_STAT_SCSI_DONE_WITH_ERROR:
3673
3674                         cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
3675
3676                         if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
3677                                 memset(cmd->scmd->sense_buffer, 0,
3678                                        SCSI_SENSE_BUFFERSIZE);
3679                                 memcpy(cmd->scmd->sense_buffer, cmd->sense,
3680                                        hdr->sense_len);
3681                         }
3682
3683                         break;
3684
3685                 case MFI_STAT_LD_OFFLINE:
3686                 case MFI_STAT_DEVICE_NOT_FOUND:
3687                         cmd->scmd->result = DID_BAD_TARGET << 16;
3688                         break;
3689
3690                 default:
3691                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "MFI FW status %#x\n",
3692                                hdr->cmd_status);
3693                         cmd->scmd->result = DID_ERROR << 16;
3694                         break;
3695                 }
3696
3697                 atomic_dec(&instance->fw_outstanding);
3698
3699                 scsi_dma_unmap(cmd->scmd);
3700                 scsi_done(cmd->scmd);
3701                 megasas_return_cmd(instance, cmd);
3702
3703                 break;
3704
3705         case MFI_CMD_SMP:
3706         case MFI_CMD_STP:
3707         case MFI_CMD_NVME:
3708         case MFI_CMD_TOOLBOX:
3709                 megasas_complete_int_cmd(instance, cmd);
3710                 break;
3711
3712         case MFI_CMD_DCMD:
3713                 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
3714                 /* Check for LD map update */
3715                 if ((opcode == MR_DCMD_LD_MAP_GET_INFO)
3716                         && (cmd->frame->dcmd.mbox.b[1] == 1)) {
3717                         fusion->fast_path_io = 0;
3718                         spin_lock_irqsave(instance->host->host_lock, flags);
3719                         status = cmd->frame->hdr.cmd_status;
3720                         instance->map_update_cmd = NULL;
3721                         if (status != MFI_STAT_OK) {
3722                                 if (status != MFI_STAT_NOT_FOUND)
3723                                         dev_warn(&instance->pdev->dev, "map syncfailed, status = 0x%x\n",
3724                                                cmd->frame->hdr.cmd_status);
3725                                 else {
3726                                         megasas_return_cmd(instance, cmd);
3727                                         spin_unlock_irqrestore(
3728                                                 instance->host->host_lock,
3729                                                 flags);
3730                                         break;
3731                                 }
3732                         }
3733
3734                         megasas_return_cmd(instance, cmd);
3735
3736                         /*
3737                          * Set fast path IO to ZERO.
3738                          * Validate Map will set proper value.
3739                          * Meanwhile all IOs will go as LD IO.
3740                          */
3741                         if (status == MFI_STAT_OK &&
3742                             (MR_ValidateMapInfo(instance, (instance->map_id + 1)))) {
3743                                 instance->map_id++;
3744                                 fusion->fast_path_io = 1;
3745                         } else {
3746                                 fusion->fast_path_io = 0;
3747                         }
3748
3749                         if (instance->adapter_type >= INVADER_SERIES)
3750                                 megasas_set_ld_removed_by_fw(instance);
3751
3752                         megasas_sync_map_info(instance);
3753                         spin_unlock_irqrestore(instance->host->host_lock,
3754                                                flags);
3755
3756                         break;
3757                 }
3758                 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
3759                     opcode == MR_DCMD_CTRL_EVENT_GET) {
3760                         spin_lock_irqsave(&poll_aen_lock, flags);
3761                         megasas_poll_wait_aen = 0;
3762                         spin_unlock_irqrestore(&poll_aen_lock, flags);
3763                 }
3764
3765                 /* FW has an updated PD sequence */
3766                 if ((opcode == MR_DCMD_SYSTEM_PD_MAP_GET_INFO) &&
3767                         (cmd->frame->dcmd.mbox.b[0] == 1)) {
3768
3769                         spin_lock_irqsave(instance->host->host_lock, flags);
3770                         status = cmd->frame->hdr.cmd_status;
3771                         instance->jbod_seq_cmd = NULL;
3772                         megasas_return_cmd(instance, cmd);
3773
3774                         if (status == MFI_STAT_OK) {
3775                                 instance->pd_seq_map_id++;
3776                                 /* Re-register a pd sync seq num cmd */
3777                                 if (megasas_sync_pd_seq_num(instance, true))
3778                                         instance->use_seqnum_jbod_fp = false;
3779                         } else
3780                                 instance->use_seqnum_jbod_fp = false;
3781
3782                         spin_unlock_irqrestore(instance->host->host_lock, flags);
3783                         break;
3784                 }
3785
3786                 /*
3787                  * See if got an event notification
3788                  */
3789                 if (opcode == MR_DCMD_CTRL_EVENT_WAIT)
3790                         megasas_service_aen(instance, cmd);
3791                 else
3792                         megasas_complete_int_cmd(instance, cmd);
3793
3794                 break;
3795
3796         case MFI_CMD_ABORT:
3797                 /*
3798                  * Cmd issued to abort another cmd returned
3799                  */
3800                 megasas_complete_abort(instance, cmd);
3801                 break;
3802
3803         default:
3804                 dev_info(&instance->pdev->dev, "Unknown command completed! [0x%X]\n",
3805                        hdr->cmd);
3806                 megasas_complete_int_cmd(instance, cmd);
3807                 break;
3808         }
3809 }
3810
3811 /**
3812  * megasas_issue_pending_cmds_again -   issue all pending cmds
3813  *                                      in FW again because of the fw reset
3814  * @instance:                           Adapter soft state
3815  */
3816 static inline void
3817 megasas_issue_pending_cmds_again(struct megasas_instance *instance)
3818 {
3819         struct megasas_cmd *cmd;
3820         struct list_head clist_local;
3821         union megasas_evt_class_locale class_locale;
3822         unsigned long flags;
3823         u32 seq_num;
3824
3825         INIT_LIST_HEAD(&clist_local);
3826         spin_lock_irqsave(&instance->hba_lock, flags);
3827         list_splice_init(&instance->internal_reset_pending_q, &clist_local);
3828         spin_unlock_irqrestore(&instance->hba_lock, flags);
3829
3830         while (!list_empty(&clist_local)) {
3831                 cmd = list_entry((&clist_local)->next,
3832                                         struct megasas_cmd, list);
3833                 list_del_init(&cmd->list);
3834
3835                 if (cmd->sync_cmd || cmd->scmd) {
3836                         dev_notice(&instance->pdev->dev, "command %p, %p:%d"
3837                                 "detected to be pending while HBA reset\n",
3838                                         cmd, cmd->scmd, cmd->sync_cmd);
3839
3840                         cmd->retry_for_fw_reset++;
3841
3842                         if (cmd->retry_for_fw_reset == 3) {
3843                                 dev_notice(&instance->pdev->dev, "cmd %p, %p:%d"
3844                                         "was tried multiple times during reset."
3845                                         "Shutting down the HBA\n",
3846                                         cmd, cmd->scmd, cmd->sync_cmd);
3847                                 instance->instancet->disable_intr(instance);
3848                                 atomic_set(&instance->fw_reset_no_pci_access, 1);
3849                                 megaraid_sas_kill_hba(instance);
3850                                 return;
3851                         }
3852                 }
3853
3854                 if (cmd->sync_cmd == 1) {
3855                         if (cmd->scmd) {
3856                                 dev_notice(&instance->pdev->dev, "unexpected"
3857                                         "cmd attached to internal command!\n");
3858                         }
3859                         dev_notice(&instance->pdev->dev, "%p synchronous cmd"
3860                                                 "on the internal reset queue,"
3861                                                 "issue it again.\n", cmd);
3862                         cmd->cmd_status_drv = DCMD_INIT;
3863                         instance->instancet->fire_cmd(instance,
3864                                                         cmd->frame_phys_addr,
3865                                                         0, instance->reg_set);
3866                 } else if (cmd->scmd) {
3867                         dev_notice(&instance->pdev->dev, "%p scsi cmd [%02x]"
3868                         "detected on the internal queue, issue again.\n",
3869                         cmd, cmd->scmd->cmnd[0]);
3870
3871                         atomic_inc(&instance->fw_outstanding);
3872                         instance->instancet->fire_cmd(instance,
3873                                         cmd->frame_phys_addr,
3874                                         cmd->frame_count-1, instance->reg_set);
3875                 } else {
3876                         dev_notice(&instance->pdev->dev, "%p unexpected cmd on the"
3877                                 "internal reset defer list while re-issue!!\n",
3878                                 cmd);
3879                 }
3880         }
3881
3882         if (instance->aen_cmd) {
3883                 dev_notice(&instance->pdev->dev, "aen_cmd in def process\n");
3884                 megasas_return_cmd(instance, instance->aen_cmd);
3885
3886                 instance->aen_cmd = NULL;
3887         }
3888
3889         /*
3890          * Initiate AEN (Asynchronous Event Notification)
3891          */
3892         seq_num = instance->last_seq_num;
3893         class_locale.members.reserved = 0;
3894         class_locale.members.locale = MR_EVT_LOCALE_ALL;
3895         class_locale.members.class = MR_EVT_CLASS_DEBUG;
3896
3897         megasas_register_aen(instance, seq_num, class_locale.word);
3898 }
3899
3900 /*
3901  * Move the internal reset pending commands to a deferred queue.
3902  *
3903  * We move the commands pending at internal reset time to a
3904  * pending queue. This queue would be flushed after successful
3905  * completion of the internal reset sequence. if the internal reset
3906  * did not complete in time, the kernel reset handler would flush
3907  * these commands.
3908  */
3909 static void
3910 megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
3911 {
3912         struct megasas_cmd *cmd;
3913         int i;
3914         u16 max_cmd = instance->max_fw_cmds;
3915         u32 defer_index;
3916         unsigned long flags;
3917
3918         defer_index = 0;
3919         spin_lock_irqsave(&instance->mfi_pool_lock, flags);
3920         for (i = 0; i < max_cmd; i++) {
3921                 cmd = instance->cmd_list[i];
3922                 if (cmd->sync_cmd == 1 || cmd->scmd) {
3923                         dev_notice(&instance->pdev->dev, "moving cmd[%d]:%p:%d:%p"
3924                                         "on the defer queue as internal\n",
3925                                 defer_index, cmd, cmd->sync_cmd, cmd->scmd);
3926
3927                         if (!list_empty(&cmd->list)) {
3928                                 dev_notice(&instance->pdev->dev, "ERROR while"
3929                                         " moving this cmd:%p, %d %p, it was"
3930                                         "discovered on some list?\n",
3931                                         cmd, cmd->sync_cmd, cmd->scmd);
3932
3933                                 list_del_init(&cmd->list);
3934                         }
3935                         defer_index++;
3936                         list_add_tail(&cmd->list,
3937                                 &instance->internal_reset_pending_q);
3938                 }
3939         }
3940         spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
3941 }
3942
3943
3944 static void
3945 process_fw_state_change_wq(struct work_struct *work)
3946 {
3947         struct megasas_instance *instance =
3948                 container_of(work, struct megasas_instance, work_init);
3949         u32 wait;
3950         unsigned long flags;
3951
3952         if (atomic_read(&instance->adprecovery) != MEGASAS_ADPRESET_SM_INFAULT) {
3953                 dev_notice(&instance->pdev->dev, "error, recovery st %x\n",
3954                            atomic_read(&instance->adprecovery));
3955                 return ;
3956         }
3957
3958         if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
3959                 dev_notice(&instance->pdev->dev, "FW detected to be in fault"
3960                                         "state, restarting it...\n");
3961
3962                 instance->instancet->disable_intr(instance);
3963                 atomic_set(&instance->fw_outstanding, 0);
3964
3965                 atomic_set(&instance->fw_reset_no_pci_access, 1);
3966                 instance->instancet->adp_reset(instance, instance->reg_set);
3967                 atomic_set(&instance->fw_reset_no_pci_access, 0);
3968
3969                 dev_notice(&instance->pdev->dev, "FW restarted successfully,"
3970                                         "initiating next stage...\n");
3971
3972                 dev_notice(&instance->pdev->dev, "HBA recovery state machine,"
3973                                         "state 2 starting...\n");
3974
3975                 /* waiting for about 20 second before start the second init */
3976                 for (wait = 0; wait < 30; wait++) {
3977                         msleep(1000);
3978                 }
3979
3980                 if (megasas_transition_to_ready(instance, 1)) {
3981                         dev_notice(&instance->pdev->dev, "adapter not ready\n");
3982
3983                         atomic_set(&instance->fw_reset_no_pci_access, 1);
3984                         megaraid_sas_kill_hba(instance);
3985                         return ;
3986                 }
3987
3988                 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
3989                         (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
3990                         (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
3991                         ) {
3992                         *instance->consumer = *instance->producer;
3993                 } else {
3994                         *instance->consumer = 0;
3995                         *instance->producer = 0;
3996                 }
3997
3998                 megasas_issue_init_mfi(instance);
3999
4000                 spin_lock_irqsave(&instance->hba_lock, flags);
4001                 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
4002                 spin_unlock_irqrestore(&instance->hba_lock, flags);
4003                 instance->instancet->enable_intr(instance);
4004
4005                 megasas_issue_pending_cmds_again(instance);
4006                 instance->issuepend_done = 1;
4007         }
4008 }
4009
4010 /**
4011  * megasas_deplete_reply_queue -        Processes all completed commands
4012  * @instance:                           Adapter soft state
4013  * @alt_status:                         Alternate status to be returned to
4014  *                                      SCSI mid-layer instead of the status
4015  *                                      returned by the FW
4016  * Note: this must be called with hba lock held
4017  */
4018 static int
4019 megasas_deplete_reply_queue(struct megasas_instance *instance,
4020                                         u8 alt_status)
4021 {
4022         u32 mfiStatus;
4023         u32 fw_state;
4024
4025         if (instance->instancet->check_reset(instance, instance->reg_set) == 1)
4026                 return IRQ_HANDLED;
4027
4028         mfiStatus = instance->instancet->clear_intr(instance);
4029         if (mfiStatus == 0) {
4030                 /* Hardware may not set outbound_intr_status in MSI-X mode */
4031                 if (!instance->msix_vectors)
4032                         return IRQ_NONE;
4033         }
4034
4035         instance->mfiStatus = mfiStatus;
4036
4037         if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
4038                 fw_state = instance->instancet->read_fw_status_reg(
4039                                 instance) & MFI_STATE_MASK;
4040
4041                 if (fw_state != MFI_STATE_FAULT) {
4042                         dev_notice(&instance->pdev->dev, "fw state:%x\n",
4043                                                 fw_state);
4044                 }
4045
4046                 if ((fw_state == MFI_STATE_FAULT) &&
4047                                 (instance->disableOnlineCtrlReset == 0)) {
4048                         dev_notice(&instance->pdev->dev, "wait adp restart\n");
4049
4050                         if ((instance->pdev->device ==
4051                                         PCI_DEVICE_ID_LSI_SAS1064R) ||
4052                                 (instance->pdev->device ==
4053                                         PCI_DEVICE_ID_DELL_PERC5) ||
4054                                 (instance->pdev->device ==
4055                                         PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
4056
4057                                 *instance->consumer =
4058                                         cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
4059                         }
4060
4061
4062                         instance->instancet->disable_intr(instance);
4063                         atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
4064                         instance->issuepend_done = 0;
4065
4066                         atomic_set(&instance->fw_outstanding, 0);
4067                         megasas_internal_reset_defer_cmds(instance);
4068
4069                         dev_notice(&instance->pdev->dev, "fwState=%x, stage:%d\n",
4070                                         fw_state, atomic_read(&instance->adprecovery));
4071
4072                         schedule_work(&instance->work_init);
4073                         return IRQ_HANDLED;
4074
4075                 } else {
4076                         dev_notice(&instance->pdev->dev, "fwstate:%x, dis_OCR=%x\n",
4077                                 fw_state, instance->disableOnlineCtrlReset);
4078                 }
4079         }
4080
4081         tasklet_schedule(&instance->isr_tasklet);
4082         return IRQ_HANDLED;
4083 }
4084
4085 /**
4086  * megasas_isr - isr entry point
4087  * @irq:        IRQ number
4088  * @devp:       IRQ context address
4089  */
4090 static irqreturn_t megasas_isr(int irq, void *devp)
4091 {
4092         struct megasas_irq_context *irq_context = devp;
4093         struct megasas_instance *instance = irq_context->instance;
4094         unsigned long flags;
4095         irqreturn_t rc;
4096
4097         if (atomic_read(&instance->fw_reset_no_pci_access))
4098                 return IRQ_HANDLED;
4099
4100         spin_lock_irqsave(&instance->hba_lock, flags);
4101         rc = megasas_deplete_reply_queue(instance, DID_OK);
4102         spin_unlock_irqrestore(&instance->hba_lock, flags);
4103
4104         return rc;
4105 }
4106
4107 /**
4108  * megasas_transition_to_ready -        Move the FW to READY state
4109  * @instance:                           Adapter soft state
4110  * @ocr:                                Adapter reset state
4111  *
4112  * During the initialization, FW passes can potentially be in any one of
4113  * several possible states. If the FW in operational, waiting-for-handshake
4114  * states, driver must take steps to bring it to ready state. Otherwise, it
4115  * has to wait for the ready state.
4116  */
4117 int
4118 megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
4119 {
4120         int i;
4121         u8 max_wait;
4122         u32 fw_state;
4123         u32 abs_state, curr_abs_state;
4124
4125         abs_state = instance->instancet->read_fw_status_reg(instance);
4126         fw_state = abs_state & MFI_STATE_MASK;
4127
4128         if (fw_state != MFI_STATE_READY)
4129                 dev_info(&instance->pdev->dev, "Waiting for FW to come to ready"
4130                        " state\n");
4131
4132         while (fw_state != MFI_STATE_READY) {
4133
4134                 switch (fw_state) {
4135
4136                 case MFI_STATE_FAULT:
4137                         dev_printk(KERN_ERR, &instance->pdev->dev,
4138                                    "FW in FAULT state, Fault code:0x%x subcode:0x%x func:%s\n",
4139                                    abs_state & MFI_STATE_FAULT_CODE,
4140                                    abs_state & MFI_STATE_FAULT_SUBCODE, __func__);
4141                         if (ocr) {
4142                                 max_wait = MEGASAS_RESET_WAIT_TIME;
4143                                 break;
4144                         } else {
4145                                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4146                                 megasas_dump_reg_set(instance->reg_set);
4147                                 return -ENODEV;
4148                         }
4149
4150                 case MFI_STATE_WAIT_HANDSHAKE:
4151                         /*
4152                          * Set the CLR bit in inbound doorbell
4153                          */
4154                         if ((instance->pdev->device ==
4155                                 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4156                                 (instance->pdev->device ==
4157                                  PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4158                                 (instance->adapter_type != MFI_SERIES))
4159                                 writel(
4160                                   MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
4161                                   &instance->reg_set->doorbell);
4162                         else
4163                                 writel(
4164                                     MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
4165                                         &instance->reg_set->inbound_doorbell);
4166
4167                         max_wait = MEGASAS_RESET_WAIT_TIME;
4168                         break;
4169
4170                 case MFI_STATE_BOOT_MESSAGE_PENDING:
4171                         if ((instance->pdev->device ==
4172                              PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4173                                 (instance->pdev->device ==
4174                                  PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4175                                 (instance->adapter_type != MFI_SERIES))
4176                                 writel(MFI_INIT_HOTPLUG,
4177                                        &instance->reg_set->doorbell);
4178                         else
4179                                 writel(MFI_INIT_HOTPLUG,
4180                                         &instance->reg_set->inbound_doorbell);
4181
4182                         max_wait = MEGASAS_RESET_WAIT_TIME;
4183                         break;
4184
4185                 case MFI_STATE_OPERATIONAL:
4186                         /*
4187                          * Bring it to READY state; assuming max wait 10 secs
4188                          */
4189                         instance->instancet->disable_intr(instance);
4190                         if ((instance->pdev->device ==
4191                                 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4192                                 (instance->pdev->device ==
4193                                 PCI_DEVICE_ID_LSI_SAS0071SKINNY)  ||
4194                                 (instance->adapter_type != MFI_SERIES)) {
4195                                 writel(MFI_RESET_FLAGS,
4196                                         &instance->reg_set->doorbell);
4197
4198                                 if (instance->adapter_type != MFI_SERIES) {
4199                                         for (i = 0; i < (10 * 1000); i += 20) {
4200                                                 if (megasas_readl(
4201                                                             instance,
4202                                                             &instance->
4203                                                             reg_set->
4204                                                             doorbell) & 1)
4205                                                         msleep(20);
4206                                                 else
4207                                                         break;
4208                                         }
4209                                 }
4210                         } else
4211                                 writel(MFI_RESET_FLAGS,
4212                                         &instance->reg_set->inbound_doorbell);
4213
4214                         max_wait = MEGASAS_RESET_WAIT_TIME;
4215                         break;
4216
4217                 case MFI_STATE_UNDEFINED:
4218                         /*
4219                          * This state should not last for more than 2 seconds
4220                          */
4221                         max_wait = MEGASAS_RESET_WAIT_TIME;
4222                         break;
4223
4224                 case MFI_STATE_BB_INIT:
4225                         max_wait = MEGASAS_RESET_WAIT_TIME;
4226                         break;
4227
4228                 case MFI_STATE_FW_INIT:
4229                         max_wait = MEGASAS_RESET_WAIT_TIME;
4230                         break;
4231
4232                 case MFI_STATE_FW_INIT_2:
4233                         max_wait = MEGASAS_RESET_WAIT_TIME;
4234                         break;
4235
4236                 case MFI_STATE_DEVICE_SCAN:
4237                         max_wait = MEGASAS_RESET_WAIT_TIME;
4238                         break;
4239
4240                 case MFI_STATE_FLUSH_CACHE:
4241                         max_wait = MEGASAS_RESET_WAIT_TIME;
4242                         break;
4243
4244                 default:
4245                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "Unknown state 0x%x\n",
4246                                fw_state);
4247                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4248                         megasas_dump_reg_set(instance->reg_set);
4249                         return -ENODEV;
4250                 }
4251
4252                 /*
4253                  * The cur_state should not last for more than max_wait secs
4254                  */
4255                 for (i = 0; i < max_wait * 50; i++) {
4256                         curr_abs_state = instance->instancet->
4257                                 read_fw_status_reg(instance);
4258
4259                         if (abs_state == curr_abs_state) {
4260                                 msleep(20);
4261                         } else
4262                                 break;
4263                 }
4264
4265                 /*
4266                  * Return error if fw_state hasn't changed after max_wait
4267                  */
4268                 if (curr_abs_state == abs_state) {
4269                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW state [%d] hasn't changed "
4270                                "in %d secs\n", fw_state, max_wait);
4271                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4272                         megasas_dump_reg_set(instance->reg_set);
4273                         return -ENODEV;
4274                 }
4275
4276                 abs_state = curr_abs_state;
4277                 fw_state = curr_abs_state & MFI_STATE_MASK;
4278         }
4279         dev_info(&instance->pdev->dev, "FW now in Ready state\n");
4280
4281         return 0;
4282 }
4283
4284 /**
4285  * megasas_teardown_frame_pool -        Destroy the cmd frame DMA pool
4286  * @instance:                           Adapter soft state
4287  */
4288 static void megasas_teardown_frame_pool(struct megasas_instance *instance)
4289 {
4290         int i;
4291         u16 max_cmd = instance->max_mfi_cmds;
4292         struct megasas_cmd *cmd;
4293
4294         if (!instance->frame_dma_pool)
4295                 return;
4296
4297         /*
4298          * Return all frames to pool
4299          */
4300         for (i = 0; i < max_cmd; i++) {
4301
4302                 cmd = instance->cmd_list[i];
4303
4304                 if (cmd->frame)
4305                         dma_pool_free(instance->frame_dma_pool, cmd->frame,
4306                                       cmd->frame_phys_addr);
4307
4308                 if (cmd->sense)
4309                         dma_pool_free(instance->sense_dma_pool, cmd->sense,
4310                                       cmd->sense_phys_addr);
4311         }
4312
4313         /*
4314          * Now destroy the pool itself
4315          */
4316         dma_pool_destroy(instance->frame_dma_pool);
4317         dma_pool_destroy(instance->sense_dma_pool);
4318
4319         instance->frame_dma_pool = NULL;
4320         instance->sense_dma_pool = NULL;
4321 }
4322
4323 /**
4324  * megasas_create_frame_pool -  Creates DMA pool for cmd frames
4325  * @instance:                   Adapter soft state
4326  *
4327  * Each command packet has an embedded DMA memory buffer that is used for
4328  * filling MFI frame and the SG list that immediately follows the frame. This
4329  * function creates those DMA memory buffers for each command packet by using
4330  * PCI pool facility.
4331  */
4332 static int megasas_create_frame_pool(struct megasas_instance *instance)
4333 {
4334         int i;
4335         u16 max_cmd;
4336         u32 frame_count;
4337         struct megasas_cmd *cmd;
4338
4339         max_cmd = instance->max_mfi_cmds;
4340
4341         /*
4342          * For MFI controllers.
4343          * max_num_sge = 60
4344          * max_sge_sz  = 16 byte (sizeof megasas_sge_skinny)
4345          * Total 960 byte (15 MFI frame of 64 byte)
4346          *
4347          * Fusion adapter require only 3 extra frame.
4348          * max_num_sge = 16 (defined as MAX_IOCTL_SGE)
4349          * max_sge_sz  = 12 byte (sizeof  megasas_sge64)
4350          * Total 192 byte (3 MFI frame of 64 byte)
4351          */
4352         frame_count = (instance->adapter_type == MFI_SERIES) ?
4353                         (15 + 1) : (3 + 1);
4354         instance->mfi_frame_size = MEGAMFI_FRAME_SIZE * frame_count;
4355         /*
4356          * Use DMA pool facility provided by PCI layer
4357          */
4358         instance->frame_dma_pool = dma_pool_create("megasas frame pool",
4359                                         &instance->pdev->dev,
4360                                         instance->mfi_frame_size, 256, 0);
4361
4362         if (!instance->frame_dma_pool) {
4363                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup frame pool\n");
4364                 return -ENOMEM;
4365         }
4366
4367         instance->sense_dma_pool = dma_pool_create("megasas sense pool",
4368                                                    &instance->pdev->dev, 128,
4369                                                    4, 0);
4370
4371         if (!instance->sense_dma_pool) {
4372                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup sense pool\n");
4373
4374                 dma_pool_destroy(instance->frame_dma_pool);
4375                 instance->frame_dma_pool = NULL;
4376
4377                 return -ENOMEM;
4378         }
4379
4380         /*
4381          * Allocate and attach a frame to each of the commands in cmd_list.
4382          * By making cmd->index as the context instead of the &cmd, we can
4383          * always use 32bit context regardless of the architecture
4384          */
4385         for (i = 0; i < max_cmd; i++) {
4386
4387                 cmd = instance->cmd_list[i];
4388
4389                 cmd->frame = dma_pool_zalloc(instance->frame_dma_pool,
4390                                             GFP_KERNEL, &cmd->frame_phys_addr);
4391
4392                 cmd->sense = dma_pool_alloc(instance->sense_dma_pool,
4393                                             GFP_KERNEL, &cmd->sense_phys_addr);
4394
4395                 /*
4396                  * megasas_teardown_frame_pool() takes care of freeing
4397                  * whatever has been allocated
4398                  */
4399                 if (!cmd->frame || !cmd->sense) {
4400                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "dma_pool_alloc failed\n");
4401                         megasas_teardown_frame_pool(instance);
4402                         return -ENOMEM;
4403                 }
4404
4405                 cmd->frame->io.context = cpu_to_le32(cmd->index);
4406                 cmd->frame->io.pad_0 = 0;
4407                 if ((instance->adapter_type == MFI_SERIES) && reset_devices)
4408                         cmd->frame->hdr.cmd = MFI_CMD_INVALID;
4409         }
4410
4411         return 0;
4412 }
4413
4414 /**
4415  * megasas_free_cmds -  Free all the cmds in the free cmd pool
4416  * @instance:           Adapter soft state
4417  */
4418 void megasas_free_cmds(struct megasas_instance *instance)
4419 {
4420         int i;
4421
4422         /* First free the MFI frame pool */
4423         megasas_teardown_frame_pool(instance);
4424
4425         /* Free all the commands in the cmd_list */
4426         for (i = 0; i < instance->max_mfi_cmds; i++)
4427
4428                 kfree(instance->cmd_list[i]);
4429
4430         /* Free the cmd_list buffer itself */
4431         kfree(instance->cmd_list);
4432         instance->cmd_list = NULL;
4433
4434         INIT_LIST_HEAD(&instance->cmd_pool);
4435 }
4436
4437 /**
4438  * megasas_alloc_cmds - Allocates the command packets
4439  * @instance:           Adapter soft state
4440  *
4441  * Each command that is issued to the FW, whether IO commands from the OS or
4442  * internal commands like IOCTLs, are wrapped in local data structure called
4443  * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
4444  * the FW.
4445  *
4446  * Each frame has a 32-bit field called context (tag). This context is used
4447  * to get back the megasas_cmd from the frame when a frame gets completed in
4448  * the ISR. Typically the address of the megasas_cmd itself would be used as
4449  * the context. But we wanted to keep the differences between 32 and 64 bit
4450  * systems to the mininum. We always use 32 bit integers for the context. In
4451  * this driver, the 32 bit values are the indices into an array cmd_list.
4452  * This array is used only to look up the megasas_cmd given the context. The
4453  * free commands themselves are maintained in a linked list called cmd_pool.
4454  */
4455 int megasas_alloc_cmds(struct megasas_instance *instance)
4456 {
4457         int i;
4458         int j;
4459         u16 max_cmd;
4460         struct megasas_cmd *cmd;
4461
4462         max_cmd = instance->max_mfi_cmds;
4463
4464         /*
4465          * instance->cmd_list is an array of struct megasas_cmd pointers.
4466          * Allocate the dynamic array first and then allocate individual
4467          * commands.
4468          */
4469         instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
4470
4471         if (!instance->cmd_list) {
4472                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "out of memory\n");
4473                 return -ENOMEM;
4474         }
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 =
5158                         struct_size_t(struct MR_FW_RAID_MAP, ldSpanMap,
5159                                       instance->fw_supported_vd_count);
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_update_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_update_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         size_t pd_seq_map_sz;
5793
5794         pd_seq_map_sz = struct_size_t(struct MR_PD_CFG_SEQ_NUM_SYNC, seq,
5795                                       MAX_PHYSICAL_DEVICES);
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         if (instance->enable_fw_dev_list) {
5879                 if (megasas_host_device_list_query(instance, true))
5880                         return FAILED;
5881         } else {
5882                 if (megasas_get_pd_list(instance) < 0) {
5883                         dev_err(&instance->pdev->dev, "failed to get PD list\n");
5884                         return FAILED;
5885                 }
5886
5887                 if (megasas_ld_list_query(instance,
5888                                           MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) {
5889                         dev_err(&instance->pdev->dev, "failed to get LD list\n");
5890                         return FAILED;
5891                 }
5892         }
5893
5894         return SUCCESS;
5895 }
5896
5897 /**
5898  * megasas_set_high_iops_queue_affinity_and_hint -      Set affinity and hint
5899  *                                                      for high IOPS queues
5900  * @instance:                                           Adapter soft state
5901  * return:                                              void
5902  */
5903 static inline void
5904 megasas_set_high_iops_queue_affinity_and_hint(struct megasas_instance *instance)
5905 {
5906         int i;
5907         unsigned int irq;
5908         const struct cpumask *mask;
5909
5910         if (instance->perf_mode == MR_BALANCED_PERF_MODE) {
5911                 mask = cpumask_of_node(dev_to_node(&instance->pdev->dev));
5912
5913                 for (i = 0; i < instance->low_latency_index_start; i++) {
5914                         irq = pci_irq_vector(instance->pdev, i);
5915                         irq_set_affinity_and_hint(irq, mask);
5916                 }
5917         }
5918 }
5919
5920 static int
5921 __megasas_alloc_irq_vectors(struct megasas_instance *instance)
5922 {
5923         int i, irq_flags;
5924         struct irq_affinity desc = { .pre_vectors = instance->low_latency_index_start };
5925         struct irq_affinity *descp = &desc;
5926
5927         irq_flags = PCI_IRQ_MSIX;
5928
5929         if (instance->smp_affinity_enable)
5930                 irq_flags |= PCI_IRQ_AFFINITY | PCI_IRQ_ALL_TYPES;
5931         else
5932                 descp = NULL;
5933
5934         /* Do not allocate msix vectors for poll_queues.
5935          * msix_vectors is always within a range of FW supported reply queue.
5936          */
5937         i = pci_alloc_irq_vectors_affinity(instance->pdev,
5938                 instance->low_latency_index_start,
5939                 instance->msix_vectors - instance->iopoll_q_count, irq_flags, descp);
5940
5941         return i;
5942 }
5943
5944 /**
5945  * megasas_alloc_irq_vectors -  Allocate IRQ vectors/enable MSI-x vectors
5946  * @instance:                   Adapter soft state
5947  * return:                      void
5948  */
5949 static void
5950 megasas_alloc_irq_vectors(struct megasas_instance *instance)
5951 {
5952         int i;
5953         unsigned int num_msix_req;
5954
5955         instance->iopoll_q_count = 0;
5956         if ((instance->adapter_type != MFI_SERIES) &&
5957                 poll_queues) {
5958
5959                 instance->perf_mode = MR_LATENCY_PERF_MODE;
5960                 instance->low_latency_index_start = 1;
5961
5962                 /* reserve for default and non-mananged pre-vector. */
5963                 if (instance->msix_vectors > (poll_queues + 2))
5964                         instance->iopoll_q_count = poll_queues;
5965                 else
5966                         instance->iopoll_q_count = 0;
5967
5968                 num_msix_req = num_online_cpus() + instance->low_latency_index_start;
5969                 instance->msix_vectors = min(num_msix_req,
5970                                 instance->msix_vectors);
5971
5972         }
5973
5974         i = __megasas_alloc_irq_vectors(instance);
5975
5976         if (((instance->perf_mode == MR_BALANCED_PERF_MODE)
5977                 || instance->iopoll_q_count) &&
5978             (i != (instance->msix_vectors - instance->iopoll_q_count))) {
5979                 if (instance->msix_vectors)
5980                         pci_free_irq_vectors(instance->pdev);
5981                 /* Disable Balanced IOPS mode and try realloc vectors */
5982                 instance->perf_mode = MR_LATENCY_PERF_MODE;
5983                 instance->low_latency_index_start = 1;
5984                 num_msix_req = num_online_cpus() + instance->low_latency_index_start;
5985
5986                 instance->msix_vectors = min(num_msix_req,
5987                                 instance->msix_vectors);
5988
5989                 instance->iopoll_q_count = 0;
5990                 i = __megasas_alloc_irq_vectors(instance);
5991
5992         }
5993
5994         dev_info(&instance->pdev->dev,
5995                 "requested/available msix %d/%d poll_queue %d\n",
5996                         instance->msix_vectors - instance->iopoll_q_count,
5997                         i, instance->iopoll_q_count);
5998
5999         if (i > 0)
6000                 instance->msix_vectors = i;
6001         else
6002                 instance->msix_vectors = 0;
6003
6004         if (instance->smp_affinity_enable)
6005                 megasas_set_high_iops_queue_affinity_and_hint(instance);
6006 }
6007
6008 /**
6009  * megasas_init_fw -    Initializes the FW
6010  * @instance:           Adapter soft state
6011  *
6012  * This is the main function for initializing firmware
6013  */
6014
6015 static int megasas_init_fw(struct megasas_instance *instance)
6016 {
6017         u32 max_sectors_1;
6018         u32 max_sectors_2, tmp_sectors, msix_enable;
6019         u32 scratch_pad_1, scratch_pad_2, scratch_pad_3, status_reg;
6020         resource_size_t base_addr;
6021         void *base_addr_phys;
6022         struct megasas_ctrl_info *ctrl_info = NULL;
6023         unsigned long bar_list;
6024         int i, j, loop;
6025         struct IOV_111 *iovPtr;
6026         struct fusion_context *fusion;
6027         bool intr_coalescing;
6028         unsigned int num_msix_req;
6029         u16 lnksta, speed;
6030
6031         fusion = instance->ctrl_context;
6032
6033         /* Find first memory bar */
6034         bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
6035         instance->bar = find_first_bit(&bar_list, BITS_PER_LONG);
6036         if (pci_request_selected_regions(instance->pdev, 1<<instance->bar,
6037                                          "megasas: LSI")) {
6038                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "IO memory region busy!\n");
6039                 return -EBUSY;
6040         }
6041
6042         base_addr = pci_resource_start(instance->pdev, instance->bar);
6043         instance->reg_set = ioremap(base_addr, 8192);
6044
6045         if (!instance->reg_set) {
6046                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to map IO mem\n");
6047                 goto fail_ioremap;
6048         }
6049
6050         base_addr_phys = &base_addr;
6051         dev_printk(KERN_DEBUG, &instance->pdev->dev,
6052                    "BAR:0x%lx  BAR's base_addr(phys):%pa  mapped virt_addr:0x%p\n",
6053                    instance->bar, base_addr_phys, instance->reg_set);
6054
6055         if (instance->adapter_type != MFI_SERIES)
6056                 instance->instancet = &megasas_instance_template_fusion;
6057         else {
6058                 switch (instance->pdev->device) {
6059                 case PCI_DEVICE_ID_LSI_SAS1078R:
6060                 case PCI_DEVICE_ID_LSI_SAS1078DE:
6061                         instance->instancet = &megasas_instance_template_ppc;
6062                         break;
6063                 case PCI_DEVICE_ID_LSI_SAS1078GEN2:
6064                 case PCI_DEVICE_ID_LSI_SAS0079GEN2:
6065                         instance->instancet = &megasas_instance_template_gen2;
6066                         break;
6067                 case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
6068                 case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
6069                         instance->instancet = &megasas_instance_template_skinny;
6070                         break;
6071                 case PCI_DEVICE_ID_LSI_SAS1064R:
6072                 case PCI_DEVICE_ID_DELL_PERC5:
6073                 default:
6074                         instance->instancet = &megasas_instance_template_xscale;
6075                         instance->pd_list_not_supported = 1;
6076                         break;
6077                 }
6078         }
6079
6080         if (megasas_transition_to_ready(instance, 0)) {
6081                 dev_info(&instance->pdev->dev,
6082                          "Failed to transition controller to ready from %s!\n",
6083                          __func__);
6084                 if (instance->adapter_type != MFI_SERIES) {
6085                         status_reg = instance->instancet->read_fw_status_reg(
6086                                         instance);
6087                         if (status_reg & MFI_RESET_ADAPTER) {
6088                                 if (megasas_adp_reset_wait_for_ready
6089                                         (instance, true, 0) == FAILED)
6090                                         goto fail_ready_state;
6091                         } else {
6092                                 goto fail_ready_state;
6093                         }
6094                 } else {
6095                         atomic_set(&instance->fw_reset_no_pci_access, 1);
6096                         instance->instancet->adp_reset
6097                                 (instance, instance->reg_set);
6098                         atomic_set(&instance->fw_reset_no_pci_access, 0);
6099
6100                         /*waiting for about 30 second before retry*/
6101                         ssleep(30);
6102
6103                         if (megasas_transition_to_ready(instance, 0))
6104                                 goto fail_ready_state;
6105                 }
6106
6107                 dev_info(&instance->pdev->dev,
6108                          "FW restarted successfully from %s!\n",
6109                          __func__);
6110         }
6111
6112         megasas_init_ctrl_params(instance);
6113
6114         if (megasas_set_dma_mask(instance))
6115                 goto fail_ready_state;
6116
6117         if (megasas_alloc_ctrl_mem(instance))
6118                 goto fail_alloc_dma_buf;
6119
6120         if (megasas_alloc_ctrl_dma_buffers(instance))
6121                 goto fail_alloc_dma_buf;
6122
6123         fusion = instance->ctrl_context;
6124
6125         if (instance->adapter_type >= VENTURA_SERIES) {
6126                 scratch_pad_2 =
6127                         megasas_readl(instance,
6128                                       &instance->reg_set->outbound_scratch_pad_2);
6129                 instance->max_raid_mapsize = ((scratch_pad_2 >>
6130                         MR_MAX_RAID_MAP_SIZE_OFFSET_SHIFT) &
6131                         MR_MAX_RAID_MAP_SIZE_MASK);
6132         }
6133
6134         instance->enable_sdev_max_qd = enable_sdev_max_qd;
6135
6136         switch (instance->adapter_type) {
6137         case VENTURA_SERIES:
6138                 fusion->pcie_bw_limitation = true;
6139                 break;
6140         case AERO_SERIES:
6141                 fusion->r56_div_offload = true;
6142                 break;
6143         default:
6144                 break;
6145         }
6146
6147         /* Check if MSI-X is supported while in ready state */
6148         msix_enable = (instance->instancet->read_fw_status_reg(instance) &
6149                        0x4000000) >> 0x1a;
6150         if (msix_enable && !msix_disable) {
6151
6152                 scratch_pad_1 = megasas_readl
6153                         (instance, &instance->reg_set->outbound_scratch_pad_1);
6154                 /* Check max MSI-X vectors */
6155                 if (fusion) {
6156                         if (instance->adapter_type == THUNDERBOLT_SERIES) {
6157                                 /* Thunderbolt Series*/
6158                                 instance->msix_vectors = (scratch_pad_1
6159                                         & MR_MAX_REPLY_QUEUES_OFFSET) + 1;
6160                         } else {
6161                                 instance->msix_vectors = ((scratch_pad_1
6162                                         & MR_MAX_REPLY_QUEUES_EXT_OFFSET)
6163                                         >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1;
6164
6165                                 /*
6166                                  * For Invader series, > 8 MSI-x vectors
6167                                  * supported by FW/HW implies combined
6168                                  * reply queue mode is enabled.
6169                                  * For Ventura series, > 16 MSI-x vectors
6170                                  * supported by FW/HW implies combined
6171                                  * reply queue mode is enabled.
6172                                  */
6173                                 switch (instance->adapter_type) {
6174                                 case INVADER_SERIES:
6175                                         if (instance->msix_vectors > 8)
6176                                                 instance->msix_combined = true;
6177                                         break;
6178                                 case AERO_SERIES:
6179                                 case VENTURA_SERIES:
6180                                         if (instance->msix_vectors > 16)
6181                                                 instance->msix_combined = true;
6182                                         break;
6183                                 }
6184
6185                                 if (rdpq_enable)
6186                                         instance->is_rdpq = (scratch_pad_1 & MR_RDPQ_MODE_OFFSET) ?
6187                                                                 1 : 0;
6188
6189                                 if (instance->adapter_type >= INVADER_SERIES &&
6190                                     !instance->msix_combined) {
6191                                         instance->msix_load_balance = true;
6192                                         instance->smp_affinity_enable = false;
6193                                 }
6194
6195                                 /* Save 1-15 reply post index address to local memory
6196                                  * Index 0 is already saved from reg offset
6197                                  * MPI2_REPLY_POST_HOST_INDEX_OFFSET
6198                                  */
6199                                 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) {
6200                                         instance->reply_post_host_index_addr[loop] =
6201                                                 (u32 __iomem *)
6202                                                 ((u8 __iomem *)instance->reg_set +
6203                                                 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET
6204                                                 + (loop * 0x10));
6205                                 }
6206                         }
6207
6208                         dev_info(&instance->pdev->dev,
6209                                  "firmware supports msix\t: (%d)",
6210                                  instance->msix_vectors);
6211                         if (msix_vectors)
6212                                 instance->msix_vectors = min(msix_vectors,
6213                                         instance->msix_vectors);
6214                 } else /* MFI adapters */
6215                         instance->msix_vectors = 1;
6216
6217
6218                 /*
6219                  * For Aero (if some conditions are met), driver will configure a
6220                  * few additional reply queues with interrupt coalescing enabled.
6221                  * These queues with interrupt coalescing enabled are called
6222                  * High IOPS queues and rest of reply queues (based on number of
6223                  * logical CPUs) are termed as Low latency queues.
6224                  *
6225                  * Total Number of reply queues = High IOPS queues + low latency queues
6226                  *
6227                  * For rest of fusion adapters, 1 additional reply queue will be
6228                  * reserved for management commands, rest of reply queues
6229                  * (based on number of logical CPUs) will be used for IOs and
6230                  * referenced as IO queues.
6231                  * Total Number of reply queues = 1 + IO queues
6232                  *
6233                  * MFI adapters supports single MSI-x so single reply queue
6234                  * will be used for IO and management commands.
6235                  */
6236
6237                 intr_coalescing = (scratch_pad_1 & MR_INTR_COALESCING_SUPPORT_OFFSET) ?
6238                                                                 true : false;
6239                 if (intr_coalescing &&
6240                         (num_online_cpus() >= MR_HIGH_IOPS_QUEUE_COUNT) &&
6241                         (instance->msix_vectors == MEGASAS_MAX_MSIX_QUEUES))
6242                         instance->perf_mode = MR_BALANCED_PERF_MODE;
6243                 else
6244                         instance->perf_mode = MR_LATENCY_PERF_MODE;
6245
6246
6247                 if (instance->adapter_type == AERO_SERIES) {
6248                         pcie_capability_read_word(instance->pdev, PCI_EXP_LNKSTA, &lnksta);
6249                         speed = lnksta & PCI_EXP_LNKSTA_CLS;
6250
6251                         /*
6252                          * For Aero, if PCIe link speed is <16 GT/s, then driver should operate
6253                          * in latency perf mode and enable R1 PCI bandwidth algorithm
6254                          */
6255                         if (speed < 0x4) {
6256                                 instance->perf_mode = MR_LATENCY_PERF_MODE;
6257                                 fusion->pcie_bw_limitation = true;
6258                         }
6259
6260                         /*
6261                          * Performance mode settings provided through module parameter-perf_mode will
6262                          * take affect only for:
6263                          * 1. Aero family of adapters.
6264                          * 2. When user sets module parameter- perf_mode in range of 0-2.
6265                          */
6266                         if ((perf_mode >= MR_BALANCED_PERF_MODE) &&
6267                                 (perf_mode <= MR_LATENCY_PERF_MODE))
6268                                 instance->perf_mode = perf_mode;
6269                         /*
6270                          * If intr coalescing is not supported by controller FW, then IOPS
6271                          * and Balanced modes are not feasible.
6272                          */
6273                         if (!intr_coalescing)
6274                                 instance->perf_mode = MR_LATENCY_PERF_MODE;
6275
6276                 }
6277
6278                 if (instance->perf_mode == MR_BALANCED_PERF_MODE)
6279                         instance->low_latency_index_start =
6280                                 MR_HIGH_IOPS_QUEUE_COUNT;
6281                 else
6282                         instance->low_latency_index_start = 1;
6283
6284                 num_msix_req = num_online_cpus() + instance->low_latency_index_start;
6285
6286                 instance->msix_vectors = min(num_msix_req,
6287                                 instance->msix_vectors);
6288
6289                 megasas_alloc_irq_vectors(instance);
6290                 if (!instance->msix_vectors)
6291                         instance->msix_load_balance = false;
6292         }
6293         /*
6294          * MSI-X host index 0 is common for all adapter.
6295          * It is used for all MPT based Adapters.
6296          */
6297         if (instance->msix_combined) {
6298                 instance->reply_post_host_index_addr[0] =
6299                                 (u32 *)((u8 *)instance->reg_set +
6300                                 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET);
6301         } else {
6302                 instance->reply_post_host_index_addr[0] =
6303                         (u32 *)((u8 *)instance->reg_set +
6304                         MPI2_REPLY_POST_HOST_INDEX_OFFSET);
6305         }
6306
6307         if (!instance->msix_vectors) {
6308                 i = pci_alloc_irq_vectors(instance->pdev, 1, 1, PCI_IRQ_LEGACY);
6309                 if (i < 0)
6310                         goto fail_init_adapter;
6311         }
6312
6313         megasas_setup_reply_map(instance);
6314
6315         dev_info(&instance->pdev->dev,
6316                 "current msix/online cpus\t: (%d/%d)\n",
6317                 instance->msix_vectors, (unsigned int)num_online_cpus());
6318         dev_info(&instance->pdev->dev,
6319                 "RDPQ mode\t: (%s)\n", instance->is_rdpq ? "enabled" : "disabled");
6320
6321         tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
6322                 (unsigned long)instance);
6323
6324         /*
6325          * Below are default value for legacy Firmware.
6326          * non-fusion based controllers
6327          */
6328         instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
6329         instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
6330         /* Get operational params, sge flags, send init cmd to controller */
6331         if (instance->instancet->init_adapter(instance))
6332                 goto fail_init_adapter;
6333
6334         if (instance->adapter_type >= VENTURA_SERIES) {
6335                 scratch_pad_3 =
6336                         megasas_readl(instance,
6337                                       &instance->reg_set->outbound_scratch_pad_3);
6338                 if ((scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK) >=
6339                         MR_DEFAULT_NVME_PAGE_SHIFT)
6340                         instance->nvme_page_size =
6341                                 (1 << (scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK));
6342
6343                 dev_info(&instance->pdev->dev,
6344                          "NVME page size\t: (%d)\n", instance->nvme_page_size);
6345         }
6346
6347         if (instance->msix_vectors ?
6348                 megasas_setup_irqs_msix(instance, 1) :
6349                 megasas_setup_irqs_ioapic(instance))
6350                 goto fail_init_adapter;
6351
6352         if (instance->adapter_type != MFI_SERIES)
6353                 megasas_setup_irq_poll(instance);
6354
6355         instance->instancet->enable_intr(instance);
6356
6357         dev_info(&instance->pdev->dev, "INIT adapter done\n");
6358
6359         megasas_setup_jbod_map(instance);
6360
6361         if (megasas_get_device_list(instance) != SUCCESS) {
6362                 dev_err(&instance->pdev->dev,
6363                         "%s: megasas_get_device_list failed\n",
6364                         __func__);
6365                 goto fail_get_ld_pd_list;
6366         }
6367
6368         /* stream detection initialization */
6369         if (instance->adapter_type >= VENTURA_SERIES) {
6370                 fusion->stream_detect_by_ld =
6371                         kcalloc(MAX_LOGICAL_DRIVES_EXT,
6372                                 sizeof(struct LD_STREAM_DETECT *),
6373                                 GFP_KERNEL);
6374                 if (!fusion->stream_detect_by_ld) {
6375                         dev_err(&instance->pdev->dev,
6376                                 "unable to allocate stream detection for pool of LDs\n");
6377                         goto fail_get_ld_pd_list;
6378                 }
6379                 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i) {
6380                         fusion->stream_detect_by_ld[i] =
6381                                 kzalloc(sizeof(struct LD_STREAM_DETECT),
6382                                 GFP_KERNEL);
6383                         if (!fusion->stream_detect_by_ld[i]) {
6384                                 dev_err(&instance->pdev->dev,
6385                                         "unable to allocate stream detect by LD\n ");
6386                                 for (j = 0; j < i; ++j)
6387                                         kfree(fusion->stream_detect_by_ld[j]);
6388                                 kfree(fusion->stream_detect_by_ld);
6389                                 fusion->stream_detect_by_ld = NULL;
6390                                 goto fail_get_ld_pd_list;
6391                         }
6392                         fusion->stream_detect_by_ld[i]->mru_bit_map
6393                                 = MR_STREAM_BITMAP;
6394                 }
6395         }
6396
6397         /*
6398          * Compute the max allowed sectors per IO: The controller info has two
6399          * limits on max sectors. Driver should use the minimum of these two.
6400          *
6401          * 1 << stripe_sz_ops.min = max sectors per strip
6402          *
6403          * Note that older firmwares ( < FW ver 30) didn't report information
6404          * to calculate max_sectors_1. So the number ended up as zero always.
6405          */
6406         tmp_sectors = 0;
6407         ctrl_info = instance->ctrl_info_buf;
6408
6409         max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
6410                 le16_to_cpu(ctrl_info->max_strips_per_io);
6411         max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size);
6412
6413         tmp_sectors = min_t(u32, max_sectors_1, max_sectors_2);
6414
6415         instance->peerIsPresent = ctrl_info->cluster.peerIsPresent;
6416         instance->passive = ctrl_info->cluster.passive;
6417         memcpy(instance->clusterId, ctrl_info->clusterId, sizeof(instance->clusterId));
6418         instance->UnevenSpanSupport =
6419                 ctrl_info->adapterOperations2.supportUnevenSpans;
6420         if (instance->UnevenSpanSupport) {
6421                 struct fusion_context *fusion = instance->ctrl_context;
6422                 if (MR_ValidateMapInfo(instance, instance->map_id))
6423                         fusion->fast_path_io = 1;
6424                 else
6425                         fusion->fast_path_io = 0;
6426
6427         }
6428         if (ctrl_info->host_interface.SRIOV) {
6429                 instance->requestorId = ctrl_info->iov.requestorId;
6430                 if (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) {
6431                         if (!ctrl_info->adapterOperations2.activePassive)
6432                             instance->PlasmaFW111 = 1;
6433
6434                         dev_info(&instance->pdev->dev, "SR-IOV: firmware type: %s\n",
6435                             instance->PlasmaFW111 ? "1.11" : "new");
6436
6437                         if (instance->PlasmaFW111) {
6438                             iovPtr = (struct IOV_111 *)
6439                                 ((unsigned char *)ctrl_info + IOV_111_OFFSET);
6440                             instance->requestorId = iovPtr->requestorId;
6441                         }
6442                 }
6443                 dev_info(&instance->pdev->dev, "SRIOV: VF requestorId %d\n",
6444                         instance->requestorId);
6445         }
6446
6447         instance->crash_dump_fw_support =
6448                 ctrl_info->adapterOperations3.supportCrashDump;
6449         instance->crash_dump_drv_support =
6450                 (instance->crash_dump_fw_support &&
6451                 instance->crash_dump_buf);
6452         if (instance->crash_dump_drv_support)
6453                 megasas_set_crash_dump_params(instance,
6454                         MR_CRASH_BUF_TURN_OFF);
6455
6456         else {
6457                 if (instance->crash_dump_buf)
6458                         dma_free_coherent(&instance->pdev->dev,
6459                                 CRASH_DMA_BUF_SIZE,
6460                                 instance->crash_dump_buf,
6461                                 instance->crash_dump_h);
6462                 instance->crash_dump_buf = NULL;
6463         }
6464
6465         if (instance->snapdump_wait_time) {
6466                 megasas_get_snapdump_properties(instance);
6467                 dev_info(&instance->pdev->dev, "Snap dump wait time\t: %d\n",
6468                          instance->snapdump_wait_time);
6469         }
6470
6471         dev_info(&instance->pdev->dev,
6472                 "pci id\t\t: (0x%04x)/(0x%04x)/(0x%04x)/(0x%04x)\n",
6473                 le16_to_cpu(ctrl_info->pci.vendor_id),
6474                 le16_to_cpu(ctrl_info->pci.device_id),
6475                 le16_to_cpu(ctrl_info->pci.sub_vendor_id),
6476                 le16_to_cpu(ctrl_info->pci.sub_device_id));
6477         dev_info(&instance->pdev->dev, "unevenspan support      : %s\n",
6478                 instance->UnevenSpanSupport ? "yes" : "no");
6479         dev_info(&instance->pdev->dev, "firmware crash dump     : %s\n",
6480                 instance->crash_dump_drv_support ? "yes" : "no");
6481         dev_info(&instance->pdev->dev, "JBOD sequence map       : %s\n",
6482                 instance->use_seqnum_jbod_fp ? "enabled" : "disabled");
6483
6484         instance->max_sectors_per_req = instance->max_num_sge *
6485                                                 SGE_BUFFER_SIZE / 512;
6486         if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
6487                 instance->max_sectors_per_req = tmp_sectors;
6488
6489         /* Check for valid throttlequeuedepth module parameter */
6490         if (throttlequeuedepth &&
6491                         throttlequeuedepth <= instance->max_scsi_cmds)
6492                 instance->throttlequeuedepth = throttlequeuedepth;
6493         else
6494                 instance->throttlequeuedepth =
6495                                 MEGASAS_THROTTLE_QUEUE_DEPTH;
6496
6497         if ((resetwaittime < 1) ||
6498             (resetwaittime > MEGASAS_RESET_WAIT_TIME))
6499                 resetwaittime = MEGASAS_RESET_WAIT_TIME;
6500
6501         if ((scmd_timeout < 10) || (scmd_timeout > MEGASAS_DEFAULT_CMD_TIMEOUT))
6502                 scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
6503
6504         /* Launch SR-IOV heartbeat timer */
6505         if (instance->requestorId) {
6506                 if (!megasas_sriov_start_heartbeat(instance, 1)) {
6507                         megasas_start_timer(instance);
6508                 } else {
6509                         instance->skip_heartbeat_timer_del = 1;
6510                         goto fail_get_ld_pd_list;
6511                 }
6512         }
6513
6514         /*
6515          * Create and start watchdog thread which will monitor
6516          * controller state every 1 sec and trigger OCR when
6517          * it enters fault state
6518          */
6519         if (instance->adapter_type != MFI_SERIES)
6520                 if (megasas_fusion_start_watchdog(instance) != SUCCESS)
6521                         goto fail_start_watchdog;
6522
6523         return 0;
6524
6525 fail_start_watchdog:
6526         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
6527                 del_timer_sync(&instance->sriov_heartbeat_timer);
6528 fail_get_ld_pd_list:
6529         instance->instancet->disable_intr(instance);
6530         megasas_destroy_irqs(instance);
6531 fail_init_adapter:
6532         if (instance->msix_vectors)
6533                 pci_free_irq_vectors(instance->pdev);
6534         instance->msix_vectors = 0;
6535 fail_alloc_dma_buf:
6536         megasas_free_ctrl_dma_buffers(instance);
6537         megasas_free_ctrl_mem(instance);
6538 fail_ready_state:
6539         iounmap(instance->reg_set);
6540
6541 fail_ioremap:
6542         pci_release_selected_regions(instance->pdev, 1<<instance->bar);
6543
6544         dev_err(&instance->pdev->dev, "Failed from %s %d\n",
6545                 __func__, __LINE__);
6546         return -EINVAL;
6547 }
6548
6549 /**
6550  * megasas_release_mfi -        Reverses the FW initialization
6551  * @instance:                   Adapter soft state
6552  */
6553 static void megasas_release_mfi(struct megasas_instance *instance)
6554 {
6555         u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
6556
6557         if (instance->reply_queue)
6558                 dma_free_coherent(&instance->pdev->dev, reply_q_sz,
6559                             instance->reply_queue, instance->reply_queue_h);
6560
6561         megasas_free_cmds(instance);
6562
6563         iounmap(instance->reg_set);
6564
6565         pci_release_selected_regions(instance->pdev, 1<<instance->bar);
6566 }
6567
6568 /**
6569  * megasas_get_seq_num -        Gets latest event sequence numbers
6570  * @instance:                   Adapter soft state
6571  * @eli:                        FW event log sequence numbers information
6572  *
6573  * FW maintains a log of all events in a non-volatile area. Upper layers would
6574  * usually find out the latest sequence number of the events, the seq number at
6575  * the boot etc. They would "read" all the events below the latest seq number
6576  * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
6577  * number), they would subsribe to AEN (asynchronous event notification) and
6578  * wait for the events to happen.
6579  */
6580 static int
6581 megasas_get_seq_num(struct megasas_instance *instance,
6582                     struct megasas_evt_log_info *eli)
6583 {
6584         struct megasas_cmd *cmd;
6585         struct megasas_dcmd_frame *dcmd;
6586         struct megasas_evt_log_info *el_info;
6587         dma_addr_t el_info_h = 0;
6588         int ret;
6589
6590         cmd = megasas_get_cmd(instance);
6591
6592         if (!cmd) {
6593                 return -ENOMEM;
6594         }
6595
6596         dcmd = &cmd->frame->dcmd;
6597         el_info = dma_alloc_coherent(&instance->pdev->dev,
6598                                      sizeof(struct megasas_evt_log_info),
6599                                      &el_info_h, GFP_KERNEL);
6600         if (!el_info) {
6601                 megasas_return_cmd(instance, cmd);
6602                 return -ENOMEM;
6603         }
6604
6605         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6606
6607         dcmd->cmd = MFI_CMD_DCMD;
6608         dcmd->cmd_status = 0x0;
6609         dcmd->sge_count = 1;
6610         dcmd->flags = MFI_FRAME_DIR_READ;
6611         dcmd->timeout = 0;
6612         dcmd->pad_0 = 0;
6613         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info));
6614         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO);
6615
6616         megasas_set_dma_settings(instance, dcmd, el_info_h,
6617                                  sizeof(struct megasas_evt_log_info));
6618
6619         ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
6620         if (ret != DCMD_SUCCESS) {
6621                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
6622                         __func__, __LINE__);
6623                 goto dcmd_failed;
6624         }
6625
6626         /*
6627          * Copy the data back into callers buffer
6628          */
6629         eli->newest_seq_num = el_info->newest_seq_num;
6630         eli->oldest_seq_num = el_info->oldest_seq_num;
6631         eli->clear_seq_num = el_info->clear_seq_num;
6632         eli->shutdown_seq_num = el_info->shutdown_seq_num;
6633         eli->boot_seq_num = el_info->boot_seq_num;
6634
6635 dcmd_failed:
6636         dma_free_coherent(&instance->pdev->dev,
6637                         sizeof(struct megasas_evt_log_info),
6638                         el_info, el_info_h);
6639
6640         megasas_return_cmd(instance, cmd);
6641
6642         return ret;
6643 }
6644
6645 /**
6646  * megasas_register_aen -       Registers for asynchronous event notification
6647  * @instance:                   Adapter soft state
6648  * @seq_num:                    The starting sequence number
6649  * @class_locale_word:          Class of the event
6650  *
6651  * This function subscribes for AEN for events beyond the @seq_num. It requests
6652  * to be notified if and only if the event is of type @class_locale
6653  */
6654 static int
6655 megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
6656                      u32 class_locale_word)
6657 {
6658         int ret_val;
6659         struct megasas_cmd *cmd;
6660         struct megasas_dcmd_frame *dcmd;
6661         union megasas_evt_class_locale curr_aen;
6662         union megasas_evt_class_locale prev_aen;
6663
6664         /*
6665          * If there an AEN pending already (aen_cmd), check if the
6666          * class_locale of that pending AEN is inclusive of the new
6667          * AEN request we currently have. If it is, then we don't have
6668          * to do anything. In other words, whichever events the current
6669          * AEN request is subscribing to, have already been subscribed
6670          * to.
6671          *
6672          * If the old_cmd is _not_ inclusive, then we have to abort
6673          * that command, form a class_locale that is superset of both
6674          * old and current and re-issue to the FW
6675          */
6676
6677         curr_aen.word = class_locale_word;
6678
6679         if (instance->aen_cmd) {
6680
6681                 prev_aen.word =
6682                         le32_to_cpu(instance->aen_cmd->frame->dcmd.mbox.w[1]);
6683
6684                 if ((curr_aen.members.class < MFI_EVT_CLASS_DEBUG) ||
6685                     (curr_aen.members.class > MFI_EVT_CLASS_DEAD)) {
6686                         dev_info(&instance->pdev->dev,
6687                                  "%s %d out of range class %d send by application\n",
6688                                  __func__, __LINE__, curr_aen.members.class);
6689                         return 0;
6690                 }
6691
6692                 /*
6693                  * A class whose enum value is smaller is inclusive of all
6694                  * higher values. If a PROGRESS (= -1) was previously
6695                  * registered, then a new registration requests for higher
6696                  * classes need not be sent to FW. They are automatically
6697                  * included.
6698                  *
6699                  * Locale numbers don't have such hierarchy. They are bitmap
6700                  * values
6701                  */
6702                 if ((prev_aen.members.class <= curr_aen.members.class) &&
6703                     !((prev_aen.members.locale & curr_aen.members.locale) ^
6704                       curr_aen.members.locale)) {
6705                         /*
6706                          * Previously issued event registration includes
6707                          * current request. Nothing to do.
6708                          */
6709                         return 0;
6710                 } else {
6711                         curr_aen.members.locale |= prev_aen.members.locale;
6712
6713                         if (prev_aen.members.class < curr_aen.members.class)
6714                                 curr_aen.members.class = prev_aen.members.class;
6715
6716                         instance->aen_cmd->abort_aen = 1;
6717                         ret_val = megasas_issue_blocked_abort_cmd(instance,
6718                                                                   instance->
6719                                                                   aen_cmd, 30);
6720
6721                         if (ret_val) {
6722                                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to abort "
6723                                        "previous AEN command\n");
6724                                 return ret_val;
6725                         }
6726                 }
6727         }
6728
6729         cmd = megasas_get_cmd(instance);
6730
6731         if (!cmd)
6732                 return -ENOMEM;
6733
6734         dcmd = &cmd->frame->dcmd;
6735
6736         memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
6737
6738         /*
6739          * Prepare DCMD for aen registration
6740          */
6741         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6742
6743         dcmd->cmd = MFI_CMD_DCMD;
6744         dcmd->cmd_status = 0x0;
6745         dcmd->sge_count = 1;
6746         dcmd->flags = MFI_FRAME_DIR_READ;
6747         dcmd->timeout = 0;
6748         dcmd->pad_0 = 0;
6749         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail));
6750         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT);
6751         dcmd->mbox.w[0] = cpu_to_le32(seq_num);
6752         instance->last_seq_num = seq_num;
6753         dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word);
6754
6755         megasas_set_dma_settings(instance, dcmd, instance->evt_detail_h,
6756                                  sizeof(struct megasas_evt_detail));
6757
6758         if (instance->aen_cmd != NULL) {
6759                 megasas_return_cmd(instance, cmd);
6760                 return 0;
6761         }
6762
6763         /*
6764          * Store reference to the cmd used to register for AEN. When an
6765          * application wants us to register for AEN, we have to abort this
6766          * cmd and re-register with a new EVENT LOCALE supplied by that app
6767          */
6768         instance->aen_cmd = cmd;
6769
6770         /*
6771          * Issue the aen registration frame
6772          */
6773         instance->instancet->issue_dcmd(instance, cmd);
6774
6775         return 0;
6776 }
6777
6778 /* megasas_get_target_prop - Send DCMD with below details to firmware.
6779  *
6780  * This DCMD will fetch few properties of LD/system PD defined
6781  * in MR_TARGET_DEV_PROPERTIES. eg. Queue Depth, MDTS value.
6782  *
6783  * DCMD send by drivers whenever new target is added to the OS.
6784  *
6785  * dcmd.opcode         - MR_DCMD_DEV_GET_TARGET_PROP
6786  * dcmd.mbox.b[0]      - DCMD is to be fired for LD or system PD.
6787  *                       0 = system PD, 1 = LD.
6788  * dcmd.mbox.s[1]      - TargetID for LD/system PD.
6789  * dcmd.sge IN         - Pointer to return MR_TARGET_DEV_PROPERTIES.
6790  *
6791  * @instance:           Adapter soft state
6792  * @sdev:               OS provided scsi device
6793  *
6794  * Returns 0 on success non-zero on failure.
6795  */
6796 int
6797 megasas_get_target_prop(struct megasas_instance *instance,
6798                         struct scsi_device *sdev)
6799 {
6800         int ret;
6801         struct megasas_cmd *cmd;
6802         struct megasas_dcmd_frame *dcmd;
6803         u16 targetId = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL) +
6804                         sdev->id;
6805
6806         cmd = megasas_get_cmd(instance);
6807
6808         if (!cmd) {
6809                 dev_err(&instance->pdev->dev,
6810                         "Failed to get cmd %s\n", __func__);
6811                 return -ENOMEM;
6812         }
6813
6814         dcmd = &cmd->frame->dcmd;
6815
6816         memset(instance->tgt_prop, 0, sizeof(*instance->tgt_prop));
6817         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6818         dcmd->mbox.b[0] = MEGASAS_IS_LOGICAL(sdev);
6819
6820         dcmd->mbox.s[1] = cpu_to_le16(targetId);
6821         dcmd->cmd = MFI_CMD_DCMD;
6822         dcmd->cmd_status = 0xFF;
6823         dcmd->sge_count = 1;
6824         dcmd->flags = MFI_FRAME_DIR_READ;
6825         dcmd->timeout = 0;
6826         dcmd->pad_0 = 0;
6827         dcmd->data_xfer_len =
6828                 cpu_to_le32(sizeof(struct MR_TARGET_PROPERTIES));
6829         dcmd->opcode = cpu_to_le32(MR_DCMD_DRV_GET_TARGET_PROP);
6830
6831         megasas_set_dma_settings(instance, dcmd, instance->tgt_prop_h,
6832                                  sizeof(struct MR_TARGET_PROPERTIES));
6833
6834         if ((instance->adapter_type != MFI_SERIES) &&
6835             !instance->mask_interrupts)
6836                 ret = megasas_issue_blocked_cmd(instance,
6837                                                 cmd, MFI_IO_TIMEOUT_SECS);
6838         else
6839                 ret = megasas_issue_polled(instance, cmd);
6840
6841         switch (ret) {
6842         case DCMD_TIMEOUT:
6843                 switch (dcmd_timeout_ocr_possible(instance)) {
6844                 case INITIATE_OCR:
6845                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
6846                         mutex_unlock(&instance->reset_mutex);
6847                         megasas_reset_fusion(instance->host,
6848                                              MFI_IO_TIMEOUT_OCR);
6849                         mutex_lock(&instance->reset_mutex);
6850                         break;
6851                 case KILL_ADAPTER:
6852                         megaraid_sas_kill_hba(instance);
6853                         break;
6854                 case IGNORE_TIMEOUT:
6855                         dev_info(&instance->pdev->dev,
6856                                  "Ignore DCMD timeout: %s %d\n",
6857                                  __func__, __LINE__);
6858                         break;
6859                 }
6860                 break;
6861
6862         default:
6863                 megasas_return_cmd(instance, cmd);
6864         }
6865         if (ret != DCMD_SUCCESS)
6866                 dev_err(&instance->pdev->dev,
6867                         "return from %s %d return value %d\n",
6868                         __func__, __LINE__, ret);
6869
6870         return ret;
6871 }
6872
6873 /**
6874  * megasas_start_aen -  Subscribes to AEN during driver load time
6875  * @instance:           Adapter soft state
6876  */
6877 static int megasas_start_aen(struct megasas_instance *instance)
6878 {
6879         struct megasas_evt_log_info eli;
6880         union megasas_evt_class_locale class_locale;
6881
6882         /*
6883          * Get the latest sequence number from FW
6884          */
6885         memset(&eli, 0, sizeof(eli));
6886
6887         if (megasas_get_seq_num(instance, &eli))
6888                 return -1;
6889
6890         /*
6891          * Register AEN with FW for latest sequence number plus 1
6892          */
6893         class_locale.members.reserved = 0;
6894         class_locale.members.locale = MR_EVT_LOCALE_ALL;
6895         class_locale.members.class = MR_EVT_CLASS_DEBUG;
6896
6897         return megasas_register_aen(instance,
6898                         le32_to_cpu(eli.newest_seq_num) + 1,
6899                         class_locale.word);
6900 }
6901
6902 /**
6903  * megasas_io_attach -  Attaches this driver to SCSI mid-layer
6904  * @instance:           Adapter soft state
6905  */
6906 static int megasas_io_attach(struct megasas_instance *instance)
6907 {
6908         struct Scsi_Host *host = instance->host;
6909
6910         /*
6911          * Export parameters required by SCSI mid-layer
6912          */
6913         host->unique_id = instance->unique_id;
6914         host->can_queue = instance->max_scsi_cmds;
6915         host->this_id = instance->init_id;
6916         host->sg_tablesize = instance->max_num_sge;
6917
6918         if (instance->fw_support_ieee)
6919                 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE;
6920
6921         /*
6922          * Check if the module parameter value for max_sectors can be used
6923          */
6924         if (max_sectors && max_sectors < instance->max_sectors_per_req)
6925                 instance->max_sectors_per_req = max_sectors;
6926         else {
6927                 if (max_sectors) {
6928                         if (((instance->pdev->device ==
6929                                 PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
6930                                 (instance->pdev->device ==
6931                                 PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
6932                                 (max_sectors <= MEGASAS_MAX_SECTORS)) {
6933                                 instance->max_sectors_per_req = max_sectors;
6934                         } else {
6935                         dev_info(&instance->pdev->dev, "max_sectors should be > 0"
6936                                 "and <= %d (or < 1MB for GEN2 controller)\n",
6937                                 instance->max_sectors_per_req);
6938                         }
6939                 }
6940         }
6941
6942         host->max_sectors = instance->max_sectors_per_req;
6943         host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
6944         host->max_channel = MEGASAS_MAX_CHANNELS - 1;
6945         host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
6946         host->max_lun = MEGASAS_MAX_LUN;
6947         host->max_cmd_len = 16;
6948
6949         /* Use shared host tagset only for fusion adaptors
6950          * if there are managed interrupts (smp affinity enabled case).
6951          * Single msix_vectors in kdump, so shared host tag is also disabled.
6952          */
6953
6954         host->host_tagset = 0;
6955         host->nr_hw_queues = 1;
6956
6957         if ((instance->adapter_type != MFI_SERIES) &&
6958                 (instance->msix_vectors > instance->low_latency_index_start) &&
6959                 host_tagset_enable &&
6960                 instance->smp_affinity_enable) {
6961                 host->host_tagset = 1;
6962                 host->nr_hw_queues = instance->msix_vectors -
6963                         instance->low_latency_index_start + instance->iopoll_q_count;
6964                 if (instance->iopoll_q_count)
6965                         host->nr_maps = 3;
6966         } else {
6967                 instance->iopoll_q_count = 0;
6968         }
6969
6970         dev_info(&instance->pdev->dev,
6971                 "Max firmware commands: %d shared with default "
6972                 "hw_queues = %d poll_queues %d\n", instance->max_fw_cmds,
6973                 host->nr_hw_queues - instance->iopoll_q_count,
6974                 instance->iopoll_q_count);
6975         /*
6976          * Notify the mid-layer about the new controller
6977          */
6978         if (scsi_add_host(host, &instance->pdev->dev)) {
6979                 dev_err(&instance->pdev->dev,
6980                         "Failed to add host from %s %d\n",
6981                         __func__, __LINE__);
6982                 return -ENODEV;
6983         }
6984
6985         return 0;
6986 }
6987
6988 /**
6989  * megasas_set_dma_mask -       Set DMA mask for supported controllers
6990  *
6991  * @instance:           Adapter soft state
6992  * Description:
6993  *
6994  * For Ventura, driver/FW will operate in 63bit DMA addresses.
6995  *
6996  * For invader-
6997  *      By default, driver/FW will operate in 32bit DMA addresses
6998  *      for consistent DMA mapping but if 32 bit consistent
6999  *      DMA mask fails, driver will try with 63 bit consistent
7000  *      mask provided FW is true 63bit DMA capable
7001  *
7002  * For older controllers(Thunderbolt and MFI based adapters)-
7003  *      driver/FW will operate in 32 bit consistent DMA addresses.
7004  */
7005 static int
7006 megasas_set_dma_mask(struct megasas_instance *instance)
7007 {
7008         u64 consistent_mask;
7009         struct pci_dev *pdev;
7010         u32 scratch_pad_1;
7011
7012         pdev = instance->pdev;
7013         consistent_mask = (instance->adapter_type >= VENTURA_SERIES) ?
7014                                 DMA_BIT_MASK(63) : DMA_BIT_MASK(32);
7015
7016         if (IS_DMA64) {
7017                 if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(63)) &&
7018                     dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
7019                         goto fail_set_dma_mask;
7020
7021                 if ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) &&
7022                     (dma_set_coherent_mask(&pdev->dev, consistent_mask) &&
7023                      dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))) {
7024                         /*
7025                          * If 32 bit DMA mask fails, then try for 64 bit mask
7026                          * for FW capable of handling 64 bit DMA.
7027                          */
7028                         scratch_pad_1 = megasas_readl
7029                                 (instance, &instance->reg_set->outbound_scratch_pad_1);
7030
7031                         if (!(scratch_pad_1 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET))
7032                                 goto fail_set_dma_mask;
7033                         else if (dma_set_mask_and_coherent(&pdev->dev,
7034                                                            DMA_BIT_MASK(63)))
7035                                 goto fail_set_dma_mask;
7036                 }
7037         } else if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
7038                 goto fail_set_dma_mask;
7039
7040         if (pdev->dev.coherent_dma_mask == DMA_BIT_MASK(32))
7041                 instance->consistent_mask_64bit = false;
7042         else
7043                 instance->consistent_mask_64bit = true;
7044
7045         dev_info(&pdev->dev, "%s bit DMA mask and %s bit consistent mask\n",
7046                  ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) ? "63" : "32"),
7047                  (instance->consistent_mask_64bit ? "63" : "32"));
7048
7049         return 0;
7050
7051 fail_set_dma_mask:
7052         dev_err(&pdev->dev, "Failed to set DMA mask\n");
7053         return -1;
7054
7055 }
7056
7057 /*
7058  * megasas_set_adapter_type -   Set adapter type.
7059  *                              Supported controllers can be divided in
7060  *                              different categories-
7061  *                                      enum MR_ADAPTER_TYPE {
7062  *                                              MFI_SERIES = 1,
7063  *                                              THUNDERBOLT_SERIES = 2,
7064  *                                              INVADER_SERIES = 3,
7065  *                                              VENTURA_SERIES = 4,
7066  *                                              AERO_SERIES = 5,
7067  *                                      };
7068  * @instance:                   Adapter soft state
7069  * return:                      void
7070  */
7071 static inline void megasas_set_adapter_type(struct megasas_instance *instance)
7072 {
7073         if ((instance->pdev->vendor == PCI_VENDOR_ID_DELL) &&
7074             (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5)) {
7075                 instance->adapter_type = MFI_SERIES;
7076         } else {
7077                 switch (instance->pdev->device) {
7078                 case PCI_DEVICE_ID_LSI_AERO_10E1:
7079                 case PCI_DEVICE_ID_LSI_AERO_10E2:
7080                 case PCI_DEVICE_ID_LSI_AERO_10E5:
7081                 case PCI_DEVICE_ID_LSI_AERO_10E6:
7082                         instance->adapter_type = AERO_SERIES;
7083                         break;
7084                 case PCI_DEVICE_ID_LSI_VENTURA:
7085                 case PCI_DEVICE_ID_LSI_CRUSADER:
7086                 case PCI_DEVICE_ID_LSI_HARPOON:
7087                 case PCI_DEVICE_ID_LSI_TOMCAT:
7088                 case PCI_DEVICE_ID_LSI_VENTURA_4PORT:
7089                 case PCI_DEVICE_ID_LSI_CRUSADER_4PORT:
7090                         instance->adapter_type = VENTURA_SERIES;
7091                         break;
7092                 case PCI_DEVICE_ID_LSI_FUSION:
7093                 case PCI_DEVICE_ID_LSI_PLASMA:
7094                         instance->adapter_type = THUNDERBOLT_SERIES;
7095                         break;
7096                 case PCI_DEVICE_ID_LSI_INVADER:
7097                 case PCI_DEVICE_ID_LSI_INTRUDER:
7098                 case PCI_DEVICE_ID_LSI_INTRUDER_24:
7099                 case PCI_DEVICE_ID_LSI_CUTLASS_52:
7100                 case PCI_DEVICE_ID_LSI_CUTLASS_53:
7101                 case PCI_DEVICE_ID_LSI_FURY:
7102                         instance->adapter_type = INVADER_SERIES;
7103                         break;
7104                 default: /* For all other supported controllers */
7105                         instance->adapter_type = MFI_SERIES;
7106                         break;
7107                 }
7108         }
7109 }
7110
7111 static inline int megasas_alloc_mfi_ctrl_mem(struct megasas_instance *instance)
7112 {
7113         instance->producer = dma_alloc_coherent(&instance->pdev->dev,
7114                         sizeof(u32), &instance->producer_h, GFP_KERNEL);
7115         instance->consumer = dma_alloc_coherent(&instance->pdev->dev,
7116                         sizeof(u32), &instance->consumer_h, GFP_KERNEL);
7117
7118         if (!instance->producer || !instance->consumer) {
7119                 dev_err(&instance->pdev->dev,
7120                         "Failed to allocate memory for producer, consumer\n");
7121                 return -1;
7122         }
7123
7124         *instance->producer = 0;
7125         *instance->consumer = 0;
7126         return 0;
7127 }
7128
7129 /**
7130  * megasas_alloc_ctrl_mem -     Allocate per controller memory for core data
7131  *                              structures which are not common across MFI
7132  *                              adapters and fusion adapters.
7133  *                              For MFI based adapters, allocate producer and
7134  *                              consumer buffers. For fusion adapters, allocate
7135  *                              memory for fusion context.
7136  * @instance:                   Adapter soft state
7137  * return:                      0 for SUCCESS
7138  */
7139 static int megasas_alloc_ctrl_mem(struct megasas_instance *instance)
7140 {
7141         instance->reply_map = kcalloc(nr_cpu_ids, sizeof(unsigned int),
7142                                       GFP_KERNEL);
7143         if (!instance->reply_map)
7144                 return -ENOMEM;
7145
7146         switch (instance->adapter_type) {
7147         case MFI_SERIES:
7148                 if (megasas_alloc_mfi_ctrl_mem(instance))
7149                         return -ENOMEM;
7150                 break;
7151         case AERO_SERIES:
7152         case VENTURA_SERIES:
7153         case THUNDERBOLT_SERIES:
7154         case INVADER_SERIES:
7155                 if (megasas_alloc_fusion_context(instance))
7156                         return -ENOMEM;
7157                 break;
7158         }
7159
7160         return 0;
7161 }
7162
7163 /*
7164  * megasas_free_ctrl_mem -      Free fusion context for fusion adapters and
7165  *                              producer, consumer buffers for MFI adapters
7166  *
7167  * @instance -                  Adapter soft instance
7168  *
7169  */
7170 static inline void megasas_free_ctrl_mem(struct megasas_instance *instance)
7171 {
7172         kfree(instance->reply_map);
7173         if (instance->adapter_type == MFI_SERIES) {
7174                 if (instance->producer)
7175                         dma_free_coherent(&instance->pdev->dev, sizeof(u32),
7176                                             instance->producer,
7177                                             instance->producer_h);
7178                 if (instance->consumer)
7179                         dma_free_coherent(&instance->pdev->dev, sizeof(u32),
7180                                             instance->consumer,
7181                                             instance->consumer_h);
7182         } else {
7183                 megasas_free_fusion_context(instance);
7184         }
7185 }
7186
7187 /**
7188  * megasas_alloc_ctrl_dma_buffers -     Allocate consistent DMA buffers during
7189  *                                      driver load time
7190  *
7191  * @instance:                           Adapter soft instance
7192  *
7193  * @return:                             O for SUCCESS
7194  */
7195 static inline
7196 int megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance)
7197 {
7198         struct pci_dev *pdev = instance->pdev;
7199         struct fusion_context *fusion = instance->ctrl_context;
7200
7201         instance->evt_detail = dma_alloc_coherent(&pdev->dev,
7202                         sizeof(struct megasas_evt_detail),
7203                         &instance->evt_detail_h, GFP_KERNEL);
7204
7205         if (!instance->evt_detail) {
7206                 dev_err(&instance->pdev->dev,
7207                         "Failed to allocate event detail buffer\n");
7208                 return -ENOMEM;
7209         }
7210
7211         if (fusion) {
7212                 fusion->ioc_init_request =
7213                         dma_alloc_coherent(&pdev->dev,
7214                                            sizeof(struct MPI2_IOC_INIT_REQUEST),
7215                                            &fusion->ioc_init_request_phys,
7216                                            GFP_KERNEL);
7217
7218                 if (!fusion->ioc_init_request) {
7219                         dev_err(&pdev->dev,
7220                                 "Failed to allocate ioc init request\n");
7221                         return -ENOMEM;
7222                 }
7223
7224                 instance->snapdump_prop = dma_alloc_coherent(&pdev->dev,
7225                                 sizeof(struct MR_SNAPDUMP_PROPERTIES),
7226                                 &instance->snapdump_prop_h, GFP_KERNEL);
7227
7228                 if (!instance->snapdump_prop)
7229                         dev_err(&pdev->dev,
7230                                 "Failed to allocate snapdump properties buffer\n");
7231
7232                 instance->host_device_list_buf = dma_alloc_coherent(&pdev->dev,
7233                                                         HOST_DEVICE_LIST_SZ,
7234                                                         &instance->host_device_list_buf_h,
7235                                                         GFP_KERNEL);
7236
7237                 if (!instance->host_device_list_buf) {
7238                         dev_err(&pdev->dev,
7239                                 "Failed to allocate targetid list buffer\n");
7240                         return -ENOMEM;
7241                 }
7242
7243         }
7244
7245         instance->pd_list_buf =
7246                 dma_alloc_coherent(&pdev->dev,
7247                                      MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
7248                                      &instance->pd_list_buf_h, GFP_KERNEL);
7249
7250         if (!instance->pd_list_buf) {
7251                 dev_err(&pdev->dev, "Failed to allocate PD list buffer\n");
7252                 return -ENOMEM;
7253         }
7254
7255         instance->ctrl_info_buf =
7256                 dma_alloc_coherent(&pdev->dev,
7257                                      sizeof(struct megasas_ctrl_info),
7258                                      &instance->ctrl_info_buf_h, GFP_KERNEL);
7259
7260         if (!instance->ctrl_info_buf) {
7261                 dev_err(&pdev->dev,
7262                         "Failed to allocate controller info buffer\n");
7263                 return -ENOMEM;
7264         }
7265
7266         instance->ld_list_buf =
7267                 dma_alloc_coherent(&pdev->dev,
7268                                      sizeof(struct MR_LD_LIST),
7269                                      &instance->ld_list_buf_h, GFP_KERNEL);
7270
7271         if (!instance->ld_list_buf) {
7272                 dev_err(&pdev->dev, "Failed to allocate LD list buffer\n");
7273                 return -ENOMEM;
7274         }
7275
7276         instance->ld_targetid_list_buf =
7277                 dma_alloc_coherent(&pdev->dev,
7278                                 sizeof(struct MR_LD_TARGETID_LIST),
7279                                 &instance->ld_targetid_list_buf_h, GFP_KERNEL);
7280
7281         if (!instance->ld_targetid_list_buf) {
7282                 dev_err(&pdev->dev,
7283                         "Failed to allocate LD targetid list buffer\n");
7284                 return -ENOMEM;
7285         }
7286
7287         if (!reset_devices) {
7288                 instance->system_info_buf =
7289                         dma_alloc_coherent(&pdev->dev,
7290                                         sizeof(struct MR_DRV_SYSTEM_INFO),
7291                                         &instance->system_info_h, GFP_KERNEL);
7292                 instance->pd_info =
7293                         dma_alloc_coherent(&pdev->dev,
7294                                         sizeof(struct MR_PD_INFO),
7295                                         &instance->pd_info_h, GFP_KERNEL);
7296                 instance->tgt_prop =
7297                         dma_alloc_coherent(&pdev->dev,
7298                                         sizeof(struct MR_TARGET_PROPERTIES),
7299                                         &instance->tgt_prop_h, GFP_KERNEL);
7300                 instance->crash_dump_buf =
7301                         dma_alloc_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE,
7302                                         &instance->crash_dump_h, GFP_KERNEL);
7303
7304                 if (!instance->system_info_buf)
7305                         dev_err(&instance->pdev->dev,
7306                                 "Failed to allocate system info buffer\n");
7307
7308                 if (!instance->pd_info)
7309                         dev_err(&instance->pdev->dev,
7310                                 "Failed to allocate pd_info buffer\n");
7311
7312                 if (!instance->tgt_prop)
7313                         dev_err(&instance->pdev->dev,
7314                                 "Failed to allocate tgt_prop buffer\n");
7315
7316                 if (!instance->crash_dump_buf)
7317                         dev_err(&instance->pdev->dev,
7318                                 "Failed to allocate crash dump buffer\n");
7319         }
7320
7321         return 0;
7322 }
7323
7324 /*
7325  * megasas_free_ctrl_dma_buffers -      Free consistent DMA buffers allocated
7326  *                                      during driver load time
7327  *
7328  * @instance-                           Adapter soft instance
7329  *
7330  */
7331 static inline
7332 void megasas_free_ctrl_dma_buffers(struct megasas_instance *instance)
7333 {
7334         struct pci_dev *pdev = instance->pdev;
7335         struct fusion_context *fusion = instance->ctrl_context;
7336
7337         if (instance->evt_detail)
7338                 dma_free_coherent(&pdev->dev, sizeof(struct megasas_evt_detail),
7339                                     instance->evt_detail,
7340                                     instance->evt_detail_h);
7341
7342         if (fusion && fusion->ioc_init_request)
7343                 dma_free_coherent(&pdev->dev,
7344                                   sizeof(struct MPI2_IOC_INIT_REQUEST),
7345                                   fusion->ioc_init_request,
7346                                   fusion->ioc_init_request_phys);
7347
7348         if (instance->pd_list_buf)
7349                 dma_free_coherent(&pdev->dev,
7350                                     MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
7351                                     instance->pd_list_buf,
7352                                     instance->pd_list_buf_h);
7353
7354         if (instance->ld_list_buf)
7355                 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_LIST),
7356                                     instance->ld_list_buf,
7357                                     instance->ld_list_buf_h);
7358
7359         if (instance->ld_targetid_list_buf)
7360                 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_TARGETID_LIST),
7361                                     instance->ld_targetid_list_buf,
7362                                     instance->ld_targetid_list_buf_h);
7363
7364         if (instance->ctrl_info_buf)
7365                 dma_free_coherent(&pdev->dev, sizeof(struct megasas_ctrl_info),
7366                                     instance->ctrl_info_buf,
7367                                     instance->ctrl_info_buf_h);
7368
7369         if (instance->system_info_buf)
7370                 dma_free_coherent(&pdev->dev, sizeof(struct MR_DRV_SYSTEM_INFO),
7371                                     instance->system_info_buf,
7372                                     instance->system_info_h);
7373
7374         if (instance->pd_info)
7375                 dma_free_coherent(&pdev->dev, sizeof(struct MR_PD_INFO),
7376                                     instance->pd_info, instance->pd_info_h);
7377
7378         if (instance->tgt_prop)
7379                 dma_free_coherent(&pdev->dev, sizeof(struct MR_TARGET_PROPERTIES),
7380                                     instance->tgt_prop, instance->tgt_prop_h);
7381
7382         if (instance->crash_dump_buf)
7383                 dma_free_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE,
7384                                     instance->crash_dump_buf,
7385                                     instance->crash_dump_h);
7386
7387         if (instance->snapdump_prop)
7388                 dma_free_coherent(&pdev->dev,
7389                                   sizeof(struct MR_SNAPDUMP_PROPERTIES),
7390                                   instance->snapdump_prop,
7391                                   instance->snapdump_prop_h);
7392
7393         if (instance->host_device_list_buf)
7394                 dma_free_coherent(&pdev->dev,
7395                                   HOST_DEVICE_LIST_SZ,
7396                                   instance->host_device_list_buf,
7397                                   instance->host_device_list_buf_h);
7398
7399 }
7400
7401 /*
7402  * megasas_init_ctrl_params -           Initialize controller's instance
7403  *                                      parameters before FW init
7404  * @instance -                          Adapter soft instance
7405  * @return -                            void
7406  */
7407 static inline void megasas_init_ctrl_params(struct megasas_instance *instance)
7408 {
7409         instance->fw_crash_state = UNAVAILABLE;
7410
7411         megasas_poll_wait_aen = 0;
7412         instance->issuepend_done = 1;
7413         atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
7414
7415         /*
7416          * Initialize locks and queues
7417          */
7418         INIT_LIST_HEAD(&instance->cmd_pool);
7419         INIT_LIST_HEAD(&instance->internal_reset_pending_q);
7420
7421         atomic_set(&instance->fw_outstanding, 0);
7422         atomic64_set(&instance->total_io_count, 0);
7423
7424         init_waitqueue_head(&instance->int_cmd_wait_q);
7425         init_waitqueue_head(&instance->abort_cmd_wait_q);
7426
7427         mutex_init(&instance->crashdump_lock);
7428         spin_lock_init(&instance->mfi_pool_lock);
7429         spin_lock_init(&instance->hba_lock);
7430         spin_lock_init(&instance->stream_lock);
7431         spin_lock_init(&instance->completion_lock);
7432
7433         mutex_init(&instance->reset_mutex);
7434
7435         if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
7436             (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY))
7437                 instance->flag_ieee = 1;
7438
7439         instance->flag = 0;
7440         instance->unload = 1;
7441         instance->last_time = 0;
7442         instance->disableOnlineCtrlReset = 1;
7443         instance->UnevenSpanSupport = 0;
7444         instance->smp_affinity_enable = smp_affinity_enable ? true : false;
7445         instance->msix_load_balance = false;
7446
7447         if (instance->adapter_type != MFI_SERIES)
7448                 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
7449         else
7450                 INIT_WORK(&instance->work_init, process_fw_state_change_wq);
7451 }
7452
7453 /**
7454  * megasas_probe_one -  PCI hotplug entry point
7455  * @pdev:               PCI device structure
7456  * @id:                 PCI ids of supported hotplugged adapter
7457  */
7458 static int megasas_probe_one(struct pci_dev *pdev,
7459                              const struct pci_device_id *id)
7460 {
7461         int rval, pos;
7462         struct Scsi_Host *host;
7463         struct megasas_instance *instance;
7464         u16 control = 0;
7465
7466         switch (pdev->device) {
7467         case PCI_DEVICE_ID_LSI_AERO_10E0:
7468         case PCI_DEVICE_ID_LSI_AERO_10E3:
7469         case PCI_DEVICE_ID_LSI_AERO_10E4:
7470         case PCI_DEVICE_ID_LSI_AERO_10E7:
7471                 dev_err(&pdev->dev, "Adapter is in non secure mode\n");
7472                 return 1;
7473         case PCI_DEVICE_ID_LSI_AERO_10E1:
7474         case PCI_DEVICE_ID_LSI_AERO_10E5:
7475                 dev_info(&pdev->dev, "Adapter is in configurable secure mode\n");
7476                 break;
7477         }
7478
7479         /* Reset MSI-X in the kdump kernel */
7480         if (reset_devices) {
7481                 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
7482                 if (pos) {
7483                         pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS,
7484                                              &control);
7485                         if (control & PCI_MSIX_FLAGS_ENABLE) {
7486                                 dev_info(&pdev->dev, "resetting MSI-X\n");
7487                                 pci_write_config_word(pdev,
7488                                                       pos + PCI_MSIX_FLAGS,
7489                                                       control &
7490                                                       ~PCI_MSIX_FLAGS_ENABLE);
7491                         }
7492                 }
7493         }
7494
7495         /*
7496          * PCI prepping: enable device set bus mastering and dma mask
7497          */
7498         rval = pci_enable_device_mem(pdev);
7499
7500         if (rval) {
7501                 return rval;
7502         }
7503
7504         pci_set_master(pdev);
7505
7506         host = scsi_host_alloc(&megasas_template,
7507                                sizeof(struct megasas_instance));
7508
7509         if (!host) {
7510                 dev_printk(KERN_DEBUG, &pdev->dev, "scsi_host_alloc failed\n");
7511                 goto fail_alloc_instance;
7512         }
7513
7514         instance = (struct megasas_instance *)host->hostdata;
7515         memset(instance, 0, sizeof(*instance));
7516         atomic_set(&instance->fw_reset_no_pci_access, 0);
7517
7518         /*
7519          * Initialize PCI related and misc parameters
7520          */
7521         instance->pdev = pdev;
7522         instance->host = host;
7523         instance->unique_id = pci_dev_id(pdev);
7524         instance->init_id = MEGASAS_DEFAULT_INIT_ID;
7525
7526         megasas_set_adapter_type(instance);
7527
7528         /*
7529          * Initialize MFI Firmware
7530          */
7531         if (megasas_init_fw(instance))
7532                 goto fail_init_mfi;
7533
7534         if (instance->requestorId) {
7535                 if (instance->PlasmaFW111) {
7536                         instance->vf_affiliation_111 =
7537                                 dma_alloc_coherent(&pdev->dev,
7538                                         sizeof(struct MR_LD_VF_AFFILIATION_111),
7539                                         &instance->vf_affiliation_111_h,
7540                                         GFP_KERNEL);
7541                         if (!instance->vf_affiliation_111)
7542                                 dev_warn(&pdev->dev, "Can't allocate "
7543                                        "memory for VF affiliation buffer\n");
7544                 } else {
7545                         instance->vf_affiliation =
7546                                 dma_alloc_coherent(&pdev->dev,
7547                                         (MAX_LOGICAL_DRIVES + 1) *
7548                                         sizeof(struct MR_LD_VF_AFFILIATION),
7549                                         &instance->vf_affiliation_h,
7550                                         GFP_KERNEL);
7551                         if (!instance->vf_affiliation)
7552                                 dev_warn(&pdev->dev, "Can't allocate "
7553                                        "memory for VF affiliation buffer\n");
7554                 }
7555         }
7556
7557         /*
7558          * Store instance in PCI softstate
7559          */
7560         pci_set_drvdata(pdev, instance);
7561
7562         /*
7563          * Add this controller to megasas_mgmt_info structure so that it
7564          * can be exported to management applications
7565          */
7566         megasas_mgmt_info.count++;
7567         megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
7568         megasas_mgmt_info.max_index++;
7569
7570         /*
7571          * Register with SCSI mid-layer
7572          */
7573         if (megasas_io_attach(instance))
7574                 goto fail_io_attach;
7575
7576         instance->unload = 0;
7577         /*
7578          * Trigger SCSI to scan our drives
7579          */
7580         if (!instance->enable_fw_dev_list ||
7581             (instance->host_device_list_buf->count > 0))
7582                 scsi_scan_host(host);
7583
7584         /*
7585          * Initiate AEN (Asynchronous Event Notification)
7586          */
7587         if (megasas_start_aen(instance)) {
7588                 dev_printk(KERN_DEBUG, &pdev->dev, "start aen failed\n");
7589                 goto fail_start_aen;
7590         }
7591
7592         megasas_setup_debugfs(instance);
7593
7594         /* Get current SR-IOV LD/VF affiliation */
7595         if (instance->requestorId)
7596                 megasas_get_ld_vf_affiliation(instance, 1);
7597
7598         return 0;
7599
7600 fail_start_aen:
7601         instance->unload = 1;
7602         scsi_remove_host(instance->host);
7603 fail_io_attach:
7604         megasas_mgmt_info.count--;
7605         megasas_mgmt_info.max_index--;
7606         megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
7607
7608         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7609                 del_timer_sync(&instance->sriov_heartbeat_timer);
7610
7611         instance->instancet->disable_intr(instance);
7612         megasas_destroy_irqs(instance);
7613
7614         if (instance->adapter_type != MFI_SERIES)
7615                 megasas_release_fusion(instance);
7616         else
7617                 megasas_release_mfi(instance);
7618
7619         if (instance->msix_vectors)
7620                 pci_free_irq_vectors(instance->pdev);
7621         instance->msix_vectors = 0;
7622
7623         if (instance->fw_crash_state != UNAVAILABLE)
7624                 megasas_free_host_crash_buffer(instance);
7625
7626         if (instance->adapter_type != MFI_SERIES)
7627                 megasas_fusion_stop_watchdog(instance);
7628 fail_init_mfi:
7629         scsi_host_put(host);
7630 fail_alloc_instance:
7631         pci_disable_device(pdev);
7632
7633         return -ENODEV;
7634 }
7635
7636 /**
7637  * megasas_flush_cache -        Requests FW to flush all its caches
7638  * @instance:                   Adapter soft state
7639  */
7640 static void megasas_flush_cache(struct megasas_instance *instance)
7641 {
7642         struct megasas_cmd *cmd;
7643         struct megasas_dcmd_frame *dcmd;
7644
7645         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
7646                 return;
7647
7648         cmd = megasas_get_cmd(instance);
7649
7650         if (!cmd)
7651                 return;
7652
7653         dcmd = &cmd->frame->dcmd;
7654
7655         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
7656
7657         dcmd->cmd = MFI_CMD_DCMD;
7658         dcmd->cmd_status = 0x0;
7659         dcmd->sge_count = 0;
7660         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
7661         dcmd->timeout = 0;
7662         dcmd->pad_0 = 0;
7663         dcmd->data_xfer_len = 0;
7664         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH);
7665         dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
7666
7667         if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
7668                         != DCMD_SUCCESS) {
7669                 dev_err(&instance->pdev->dev,
7670                         "return from %s %d\n", __func__, __LINE__);
7671                 return;
7672         }
7673
7674         megasas_return_cmd(instance, cmd);
7675 }
7676
7677 /**
7678  * megasas_shutdown_controller -        Instructs FW to shutdown the controller
7679  * @instance:                           Adapter soft state
7680  * @opcode:                             Shutdown/Hibernate
7681  */
7682 static void megasas_shutdown_controller(struct megasas_instance *instance,
7683                                         u32 opcode)
7684 {
7685         struct megasas_cmd *cmd;
7686         struct megasas_dcmd_frame *dcmd;
7687
7688         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
7689                 return;
7690
7691         cmd = megasas_get_cmd(instance);
7692
7693         if (!cmd)
7694                 return;
7695
7696         if (instance->aen_cmd)
7697                 megasas_issue_blocked_abort_cmd(instance,
7698                         instance->aen_cmd, MFI_IO_TIMEOUT_SECS);
7699         if (instance->map_update_cmd)
7700                 megasas_issue_blocked_abort_cmd(instance,
7701                         instance->map_update_cmd, MFI_IO_TIMEOUT_SECS);
7702         if (instance->jbod_seq_cmd)
7703                 megasas_issue_blocked_abort_cmd(instance,
7704                         instance->jbod_seq_cmd, MFI_IO_TIMEOUT_SECS);
7705
7706         dcmd = &cmd->frame->dcmd;
7707
7708         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
7709
7710         dcmd->cmd = MFI_CMD_DCMD;
7711         dcmd->cmd_status = 0x0;
7712         dcmd->sge_count = 0;
7713         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
7714         dcmd->timeout = 0;
7715         dcmd->pad_0 = 0;
7716         dcmd->data_xfer_len = 0;
7717         dcmd->opcode = cpu_to_le32(opcode);
7718
7719         if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
7720                         != DCMD_SUCCESS) {
7721                 dev_err(&instance->pdev->dev,
7722                         "return from %s %d\n", __func__, __LINE__);
7723                 return;
7724         }
7725
7726         megasas_return_cmd(instance, cmd);
7727 }
7728
7729 /**
7730  * megasas_suspend -    driver suspend entry point
7731  * @dev:                Device structure
7732  */
7733 static int __maybe_unused
7734 megasas_suspend(struct device *dev)
7735 {
7736         struct megasas_instance *instance;
7737
7738         instance = dev_get_drvdata(dev);
7739
7740         if (!instance)
7741                 return 0;
7742
7743         instance->unload = 1;
7744
7745         dev_info(dev, "%s is called\n", __func__);
7746
7747         /* Shutdown SR-IOV heartbeat timer */
7748         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7749                 del_timer_sync(&instance->sriov_heartbeat_timer);
7750
7751         /* Stop the FW fault detection watchdog */
7752         if (instance->adapter_type != MFI_SERIES)
7753                 megasas_fusion_stop_watchdog(instance);
7754
7755         megasas_flush_cache(instance);
7756         megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
7757
7758         /* cancel the delayed work if this work still in queue */
7759         if (instance->ev != NULL) {
7760                 struct megasas_aen_event *ev = instance->ev;
7761                 cancel_delayed_work_sync(&ev->hotplug_work);
7762                 instance->ev = NULL;
7763         }
7764
7765         tasklet_kill(&instance->isr_tasklet);
7766
7767         pci_set_drvdata(instance->pdev, instance);
7768         instance->instancet->disable_intr(instance);
7769
7770         megasas_destroy_irqs(instance);
7771
7772         if (instance->msix_vectors)
7773                 pci_free_irq_vectors(instance->pdev);
7774
7775         return 0;
7776 }
7777
7778 /**
7779  * megasas_resume-      driver resume entry point
7780  * @dev:                Device structure
7781  */
7782 static int __maybe_unused
7783 megasas_resume(struct device *dev)
7784 {
7785         int rval;
7786         struct Scsi_Host *host;
7787         struct megasas_instance *instance;
7788         u32 status_reg;
7789
7790         instance = dev_get_drvdata(dev);
7791
7792         if (!instance)
7793                 return 0;
7794
7795         host = instance->host;
7796
7797         dev_info(dev, "%s is called\n", __func__);
7798
7799         /*
7800          * We expect the FW state to be READY
7801          */
7802
7803         if (megasas_transition_to_ready(instance, 0)) {
7804                 dev_info(&instance->pdev->dev,
7805                          "Failed to transition controller to ready from %s!\n",
7806                          __func__);
7807                 if (instance->adapter_type != MFI_SERIES) {
7808                         status_reg =
7809                                 instance->instancet->read_fw_status_reg(instance);
7810                         if (!(status_reg & MFI_RESET_ADAPTER) ||
7811                                 ((megasas_adp_reset_wait_for_ready
7812                                 (instance, true, 0)) == FAILED))
7813                                 goto fail_ready_state;
7814                 } else {
7815                         atomic_set(&instance->fw_reset_no_pci_access, 1);
7816                         instance->instancet->adp_reset
7817                                 (instance, instance->reg_set);
7818                         atomic_set(&instance->fw_reset_no_pci_access, 0);
7819
7820                         /* waiting for about 30 seconds before retry */
7821                         ssleep(30);
7822
7823                         if (megasas_transition_to_ready(instance, 0))
7824                                 goto fail_ready_state;
7825                 }
7826
7827                 dev_info(&instance->pdev->dev,
7828                          "FW restarted successfully from %s!\n",
7829                          __func__);
7830         }
7831         if (megasas_set_dma_mask(instance))
7832                 goto fail_set_dma_mask;
7833
7834         /*
7835          * Initialize MFI Firmware
7836          */
7837
7838         atomic_set(&instance->fw_outstanding, 0);
7839         atomic_set(&instance->ldio_outstanding, 0);
7840
7841         /* Now re-enable MSI-X */
7842         if (instance->msix_vectors)
7843                 megasas_alloc_irq_vectors(instance);
7844
7845         if (!instance->msix_vectors) {
7846                 rval = pci_alloc_irq_vectors(instance->pdev, 1, 1,
7847                                              PCI_IRQ_LEGACY);
7848                 if (rval < 0)
7849                         goto fail_reenable_msix;
7850         }
7851
7852         megasas_setup_reply_map(instance);
7853
7854         if (instance->adapter_type != MFI_SERIES) {
7855                 megasas_reset_reply_desc(instance);
7856                 if (megasas_ioc_init_fusion(instance)) {
7857                         megasas_free_cmds(instance);
7858                         megasas_free_cmds_fusion(instance);
7859                         goto fail_init_mfi;
7860                 }
7861                 if (!megasas_get_map_info(instance))
7862                         megasas_sync_map_info(instance);
7863         } else {
7864                 *instance->producer = 0;
7865                 *instance->consumer = 0;
7866                 if (megasas_issue_init_mfi(instance))
7867                         goto fail_init_mfi;
7868         }
7869
7870         if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS)
7871                 goto fail_init_mfi;
7872
7873         tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
7874                      (unsigned long)instance);
7875
7876         if (instance->msix_vectors ?
7877                         megasas_setup_irqs_msix(instance, 0) :
7878                         megasas_setup_irqs_ioapic(instance))
7879                 goto fail_init_mfi;
7880
7881         if (instance->adapter_type != MFI_SERIES)
7882                 megasas_setup_irq_poll(instance);
7883
7884         /* Re-launch SR-IOV heartbeat timer */
7885         if (instance->requestorId) {
7886                 if (!megasas_sriov_start_heartbeat(instance, 0))
7887                         megasas_start_timer(instance);
7888                 else {
7889                         instance->skip_heartbeat_timer_del = 1;
7890                         goto fail_init_mfi;
7891                 }
7892         }
7893
7894         instance->instancet->enable_intr(instance);
7895         megasas_setup_jbod_map(instance);
7896         instance->unload = 0;
7897
7898         /*
7899          * Initiate AEN (Asynchronous Event Notification)
7900          */
7901         if (megasas_start_aen(instance))
7902                 dev_err(&instance->pdev->dev, "Start AEN failed\n");
7903
7904         /* Re-launch FW fault watchdog */
7905         if (instance->adapter_type != MFI_SERIES)
7906                 if (megasas_fusion_start_watchdog(instance) != SUCCESS)
7907                         goto fail_start_watchdog;
7908
7909         return 0;
7910
7911 fail_start_watchdog:
7912         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7913                 del_timer_sync(&instance->sriov_heartbeat_timer);
7914 fail_init_mfi:
7915         megasas_free_ctrl_dma_buffers(instance);
7916         megasas_free_ctrl_mem(instance);
7917         scsi_host_put(host);
7918
7919 fail_reenable_msix:
7920 fail_set_dma_mask:
7921 fail_ready_state:
7922
7923         return -ENODEV;
7924 }
7925
7926 static inline int
7927 megasas_wait_for_adapter_operational(struct megasas_instance *instance)
7928 {
7929         int wait_time = MEGASAS_RESET_WAIT_TIME * 2;
7930         int i;
7931         u8 adp_state;
7932
7933         for (i = 0; i < wait_time; i++) {
7934                 adp_state = atomic_read(&instance->adprecovery);
7935                 if ((adp_state == MEGASAS_HBA_OPERATIONAL) ||
7936                     (adp_state == MEGASAS_HW_CRITICAL_ERROR))
7937                         break;
7938
7939                 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL))
7940                         dev_notice(&instance->pdev->dev, "waiting for controller reset to finish\n");
7941
7942                 msleep(1000);
7943         }
7944
7945         if (adp_state != MEGASAS_HBA_OPERATIONAL) {
7946                 dev_info(&instance->pdev->dev,
7947                          "%s HBA failed to become operational, adp_state %d\n",
7948                          __func__, adp_state);
7949                 return 1;
7950         }
7951
7952         return 0;
7953 }
7954
7955 /**
7956  * megasas_detach_one - PCI hot"un"plug entry point
7957  * @pdev:               PCI device structure
7958  */
7959 static void megasas_detach_one(struct pci_dev *pdev)
7960 {
7961         int i;
7962         struct Scsi_Host *host;
7963         struct megasas_instance *instance;
7964         struct fusion_context *fusion;
7965         size_t pd_seq_map_sz;
7966
7967         instance = pci_get_drvdata(pdev);
7968
7969         if (!instance)
7970                 return;
7971
7972         host = instance->host;
7973         fusion = instance->ctrl_context;
7974
7975         /* Shutdown SR-IOV heartbeat timer */
7976         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7977                 del_timer_sync(&instance->sriov_heartbeat_timer);
7978
7979         /* Stop the FW fault detection watchdog */
7980         if (instance->adapter_type != MFI_SERIES)
7981                 megasas_fusion_stop_watchdog(instance);
7982
7983         if (instance->fw_crash_state != UNAVAILABLE)
7984                 megasas_free_host_crash_buffer(instance);
7985         scsi_remove_host(instance->host);
7986         instance->unload = 1;
7987
7988         if (megasas_wait_for_adapter_operational(instance))
7989                 goto skip_firing_dcmds;
7990
7991         megasas_flush_cache(instance);
7992         megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
7993
7994 skip_firing_dcmds:
7995         /* cancel the delayed work if this work still in queue*/
7996         if (instance->ev != NULL) {
7997                 struct megasas_aen_event *ev = instance->ev;
7998                 cancel_delayed_work_sync(&ev->hotplug_work);
7999                 instance->ev = NULL;
8000         }
8001
8002         /* cancel all wait events */
8003         wake_up_all(&instance->int_cmd_wait_q);
8004
8005         tasklet_kill(&instance->isr_tasklet);
8006
8007         /*
8008          * Take the instance off the instance array. Note that we will not
8009          * decrement the max_index. We let this array be sparse array
8010          */
8011         for (i = 0; i < megasas_mgmt_info.max_index; i++) {
8012                 if (megasas_mgmt_info.instance[i] == instance) {
8013                         megasas_mgmt_info.count--;
8014                         megasas_mgmt_info.instance[i] = NULL;
8015
8016                         break;
8017                 }
8018         }
8019
8020         instance->instancet->disable_intr(instance);
8021
8022         megasas_destroy_irqs(instance);
8023
8024         if (instance->msix_vectors)
8025                 pci_free_irq_vectors(instance->pdev);
8026
8027         if (instance->adapter_type >= VENTURA_SERIES) {
8028                 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i)
8029                         kfree(fusion->stream_detect_by_ld[i]);
8030                 kfree(fusion->stream_detect_by_ld);
8031                 fusion->stream_detect_by_ld = NULL;
8032         }
8033
8034
8035         if (instance->adapter_type != MFI_SERIES) {
8036                 megasas_release_fusion(instance);
8037                 pd_seq_map_sz =
8038                         struct_size_t(struct MR_PD_CFG_SEQ_NUM_SYNC,
8039                                       seq, MAX_PHYSICAL_DEVICES);
8040                 for (i = 0; i < 2 ; i++) {
8041                         if (fusion->ld_map[i])
8042                                 dma_free_coherent(&instance->pdev->dev,
8043                                                   fusion->max_map_sz,
8044                                                   fusion->ld_map[i],
8045                                                   fusion->ld_map_phys[i]);
8046                         if (fusion->ld_drv_map[i]) {
8047                                 if (is_vmalloc_addr(fusion->ld_drv_map[i]))
8048                                         vfree(fusion->ld_drv_map[i]);
8049                                 else
8050                                         free_pages((ulong)fusion->ld_drv_map[i],
8051                                                    fusion->drv_map_pages);
8052                         }
8053
8054                         if (fusion->pd_seq_sync[i])
8055                                 dma_free_coherent(&instance->pdev->dev,
8056                                         pd_seq_map_sz,
8057                                         fusion->pd_seq_sync[i],
8058                                         fusion->pd_seq_phys[i]);
8059                 }
8060         } else {
8061                 megasas_release_mfi(instance);
8062         }
8063
8064         if (instance->vf_affiliation)
8065                 dma_free_coherent(&pdev->dev, (MAX_LOGICAL_DRIVES + 1) *
8066                                     sizeof(struct MR_LD_VF_AFFILIATION),
8067                                     instance->vf_affiliation,
8068                                     instance->vf_affiliation_h);
8069
8070         if (instance->vf_affiliation_111)
8071                 dma_free_coherent(&pdev->dev,
8072                                     sizeof(struct MR_LD_VF_AFFILIATION_111),
8073                                     instance->vf_affiliation_111,
8074                                     instance->vf_affiliation_111_h);
8075
8076         if (instance->hb_host_mem)
8077                 dma_free_coherent(&pdev->dev, sizeof(struct MR_CTRL_HB_HOST_MEM),
8078                                     instance->hb_host_mem,
8079                                     instance->hb_host_mem_h);
8080
8081         megasas_free_ctrl_dma_buffers(instance);
8082
8083         megasas_free_ctrl_mem(instance);
8084
8085         megasas_destroy_debugfs(instance);
8086
8087         scsi_host_put(host);
8088
8089         pci_disable_device(pdev);
8090 }
8091
8092 /**
8093  * megasas_shutdown -   Shutdown entry point
8094  * @pdev:               PCI device structure
8095  */
8096 static void megasas_shutdown(struct pci_dev *pdev)
8097 {
8098         struct megasas_instance *instance = pci_get_drvdata(pdev);
8099
8100         if (!instance)
8101                 return;
8102
8103         instance->unload = 1;
8104
8105         if (megasas_wait_for_adapter_operational(instance))
8106                 goto skip_firing_dcmds;
8107
8108         megasas_flush_cache(instance);
8109         megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
8110
8111 skip_firing_dcmds:
8112         instance->instancet->disable_intr(instance);
8113         megasas_destroy_irqs(instance);
8114
8115         if (instance->msix_vectors)
8116                 pci_free_irq_vectors(instance->pdev);
8117 }
8118
8119 /*
8120  * megasas_mgmt_open -  char node "open" entry point
8121  * @inode:      char node inode
8122  * @filep:      char node file
8123  */
8124 static int megasas_mgmt_open(struct inode *inode, struct file *filep)
8125 {
8126         /*
8127          * Allow only those users with admin rights
8128          */
8129         if (!capable(CAP_SYS_ADMIN))
8130                 return -EACCES;
8131
8132         return 0;
8133 }
8134
8135 /*
8136  * megasas_mgmt_fasync -        Async notifier registration from applications
8137  * @fd:         char node file descriptor number
8138  * @filep:      char node file
8139  * @mode:       notifier on/off
8140  *
8141  * This function adds the calling process to a driver global queue. When an
8142  * event occurs, SIGIO will be sent to all processes in this queue.
8143  */
8144 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
8145 {
8146         int rc;
8147
8148         mutex_lock(&megasas_async_queue_mutex);
8149
8150         rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
8151
8152         mutex_unlock(&megasas_async_queue_mutex);
8153
8154         if (rc >= 0) {
8155                 /* For sanity check when we get ioctl */
8156                 filep->private_data = filep;
8157                 return 0;
8158         }
8159
8160         printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
8161
8162         return rc;
8163 }
8164
8165 /*
8166  * megasas_mgmt_poll -  char node "poll" entry point
8167  * @filep:      char node file
8168  * @wait:       Events to poll for
8169  */
8170 static __poll_t megasas_mgmt_poll(struct file *file, poll_table *wait)
8171 {
8172         __poll_t mask;
8173         unsigned long flags;
8174
8175         poll_wait(file, &megasas_poll_wait, wait);
8176         spin_lock_irqsave(&poll_aen_lock, flags);
8177         if (megasas_poll_wait_aen)
8178                 mask = (EPOLLIN | EPOLLRDNORM);
8179         else
8180                 mask = 0;
8181         megasas_poll_wait_aen = 0;
8182         spin_unlock_irqrestore(&poll_aen_lock, flags);
8183         return mask;
8184 }
8185
8186 /*
8187  * megasas_set_crash_dump_params_ioctl:
8188  *              Send CRASH_DUMP_MODE DCMD to all controllers
8189  * @cmd:        MFI command frame
8190  */
8191
8192 static int megasas_set_crash_dump_params_ioctl(struct megasas_cmd *cmd)
8193 {
8194         struct megasas_instance *local_instance;
8195         int i, error = 0;
8196         int crash_support;
8197
8198         crash_support = cmd->frame->dcmd.mbox.w[0];
8199
8200         for (i = 0; i < megasas_mgmt_info.max_index; i++) {
8201                 local_instance = megasas_mgmt_info.instance[i];
8202                 if (local_instance && local_instance->crash_dump_drv_support) {
8203                         if ((atomic_read(&local_instance->adprecovery) ==
8204                                 MEGASAS_HBA_OPERATIONAL) &&
8205                                 !megasas_set_crash_dump_params(local_instance,
8206                                         crash_support)) {
8207                                 local_instance->crash_dump_app_support =
8208                                         crash_support;
8209                                 dev_info(&local_instance->pdev->dev,
8210                                         "Application firmware crash "
8211                                         "dump mode set success\n");
8212                                 error = 0;
8213                         } else {
8214                                 dev_info(&local_instance->pdev->dev,
8215                                         "Application firmware crash "
8216                                         "dump mode set failed\n");
8217                                 error = -1;
8218                         }
8219                 }
8220         }
8221         return error;
8222 }
8223
8224 /**
8225  * megasas_mgmt_fw_ioctl -      Issues management ioctls to FW
8226  * @instance:                   Adapter soft state
8227  * @user_ioc:                   User's ioctl packet
8228  * @ioc:                        ioctl packet
8229  */
8230 static int
8231 megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
8232                       struct megasas_iocpacket __user * user_ioc,
8233                       struct megasas_iocpacket *ioc)
8234 {
8235         struct megasas_sge64 *kern_sge64 = NULL;
8236         struct megasas_sge32 *kern_sge32 = NULL;
8237         struct megasas_cmd *cmd;
8238         void *kbuff_arr[MAX_IOCTL_SGE];
8239         dma_addr_t buf_handle = 0;
8240         int error = 0, i;
8241         void *sense = NULL;
8242         dma_addr_t sense_handle;
8243         void *sense_ptr;
8244         u32 opcode = 0;
8245         int ret = DCMD_SUCCESS;
8246
8247         memset(kbuff_arr, 0, sizeof(kbuff_arr));
8248
8249         if (ioc->sge_count > MAX_IOCTL_SGE) {
8250                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SGE count [%d] >  max limit [%d]\n",
8251                        ioc->sge_count, MAX_IOCTL_SGE);
8252                 return -EINVAL;
8253         }
8254
8255         if ((ioc->frame.hdr.cmd >= MFI_CMD_OP_COUNT) ||
8256             ((ioc->frame.hdr.cmd == MFI_CMD_NVME) &&
8257             !instance->support_nvme_passthru) ||
8258             ((ioc->frame.hdr.cmd == MFI_CMD_TOOLBOX) &&
8259             !instance->support_pci_lane_margining)) {
8260                 dev_err(&instance->pdev->dev,
8261                         "Received invalid ioctl command 0x%x\n",
8262                         ioc->frame.hdr.cmd);
8263                 return -ENOTSUPP;
8264         }
8265
8266         cmd = megasas_get_cmd(instance);
8267         if (!cmd) {
8268                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a cmd packet\n");
8269                 return -ENOMEM;
8270         }
8271
8272         /*
8273          * User's IOCTL packet has 2 frames (maximum). Copy those two
8274          * frames into our cmd's frames. cmd->frame's context will get
8275          * overwritten when we copy from user's frames. So set that value
8276          * alone separately
8277          */
8278         memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
8279         cmd->frame->hdr.context = cpu_to_le32(cmd->index);
8280         cmd->frame->hdr.pad_0 = 0;
8281
8282         cmd->frame->hdr.flags &= (~MFI_FRAME_IEEE);
8283
8284         if (instance->consistent_mask_64bit)
8285                 cmd->frame->hdr.flags |= cpu_to_le16((MFI_FRAME_SGL64 |
8286                                        MFI_FRAME_SENSE64));
8287         else
8288                 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_SGL64 |
8289                                                MFI_FRAME_SENSE64));
8290
8291         if (cmd->frame->hdr.cmd == MFI_CMD_DCMD)
8292                 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
8293
8294         if (opcode == MR_DCMD_CTRL_SHUTDOWN) {
8295                 mutex_lock(&instance->reset_mutex);
8296                 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS) {
8297                         megasas_return_cmd(instance, cmd);
8298                         mutex_unlock(&instance->reset_mutex);
8299                         return -1;
8300                 }
8301                 mutex_unlock(&instance->reset_mutex);
8302         }
8303
8304         if (opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) {
8305                 error = megasas_set_crash_dump_params_ioctl(cmd);
8306                 megasas_return_cmd(instance, cmd);
8307                 return error;
8308         }
8309
8310         /*
8311          * The management interface between applications and the fw uses
8312          * MFI frames. E.g, RAID configuration changes, LD property changes
8313          * etc are accomplishes through different kinds of MFI frames. The
8314          * driver needs to care only about substituting user buffers with
8315          * kernel buffers in SGLs. The location of SGL is embedded in the
8316          * struct iocpacket itself.
8317          */
8318         if (instance->consistent_mask_64bit)
8319                 kern_sge64 = (struct megasas_sge64 *)
8320                         ((unsigned long)cmd->frame + ioc->sgl_off);
8321         else
8322                 kern_sge32 = (struct megasas_sge32 *)
8323                         ((unsigned long)cmd->frame + ioc->sgl_off);
8324
8325         /*
8326          * For each user buffer, create a mirror buffer and copy in
8327          */
8328         for (i = 0; i < ioc->sge_count; i++) {
8329                 if (!ioc->sgl[i].iov_len)
8330                         continue;
8331
8332                 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
8333                                                     ioc->sgl[i].iov_len,
8334                                                     &buf_handle, GFP_KERNEL);
8335                 if (!kbuff_arr[i]) {
8336                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc "
8337                                "kernel SGL buffer for IOCTL\n");
8338                         error = -ENOMEM;
8339                         goto out;
8340                 }
8341
8342                 /*
8343                  * We don't change the dma_coherent_mask, so
8344                  * dma_alloc_coherent only returns 32bit addresses
8345                  */
8346                 if (instance->consistent_mask_64bit) {
8347                         kern_sge64[i].phys_addr = cpu_to_le64(buf_handle);
8348                         kern_sge64[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
8349                 } else {
8350                         kern_sge32[i].phys_addr = cpu_to_le32(buf_handle);
8351                         kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
8352                 }
8353
8354                 /*
8355                  * We created a kernel buffer corresponding to the
8356                  * user buffer. Now copy in from the user buffer
8357                  */
8358                 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
8359                                    (u32) (ioc->sgl[i].iov_len))) {
8360                         error = -EFAULT;
8361                         goto out;
8362                 }
8363         }
8364
8365         if (ioc->sense_len) {
8366                 /* make sure the pointer is part of the frame */
8367                 if (ioc->sense_off >
8368                     (sizeof(union megasas_frame) - sizeof(__le64))) {
8369                         error = -EINVAL;
8370                         goto out;
8371                 }
8372
8373                 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
8374                                              &sense_handle, GFP_KERNEL);
8375                 if (!sense) {
8376                         error = -ENOMEM;
8377                         goto out;
8378                 }
8379
8380                 /* always store 64 bits regardless of addressing */
8381                 sense_ptr = (void *)cmd->frame + ioc->sense_off;
8382                 put_unaligned_le64(sense_handle, sense_ptr);
8383         }
8384
8385         /*
8386          * Set the sync_cmd flag so that the ISR knows not to complete this
8387          * cmd to the SCSI mid-layer
8388          */
8389         cmd->sync_cmd = 1;
8390
8391         ret = megasas_issue_blocked_cmd(instance, cmd, 0);
8392         switch (ret) {
8393         case DCMD_INIT:
8394         case DCMD_BUSY:
8395                 cmd->sync_cmd = 0;
8396                 dev_err(&instance->pdev->dev,
8397                         "return -EBUSY from %s %d cmd 0x%x opcode 0x%x cmd->cmd_status_drv 0x%x\n",
8398                          __func__, __LINE__, cmd->frame->hdr.cmd, opcode,
8399                          cmd->cmd_status_drv);
8400                 error = -EBUSY;
8401                 goto out;
8402         }
8403
8404         cmd->sync_cmd = 0;
8405
8406         if (instance->unload == 1) {
8407                 dev_info(&instance->pdev->dev, "Driver unload is in progress "
8408                         "don't submit data to application\n");
8409                 goto out;
8410         }
8411         /*
8412          * copy out the kernel buffers to user buffers
8413          */
8414         for (i = 0; i < ioc->sge_count; i++) {
8415                 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
8416                                  ioc->sgl[i].iov_len)) {
8417                         error = -EFAULT;
8418                         goto out;
8419                 }
8420         }
8421
8422         /*
8423          * copy out the sense
8424          */
8425         if (ioc->sense_len) {
8426                 void __user *uptr;
8427                 /*
8428                  * sense_ptr points to the location that has the user
8429                  * sense buffer address
8430                  */
8431                 sense_ptr = (void *)ioc->frame.raw + ioc->sense_off;
8432                 if (in_compat_syscall())
8433                         uptr = compat_ptr(get_unaligned((compat_uptr_t *)
8434                                                         sense_ptr));
8435                 else
8436                         uptr = get_unaligned((void __user **)sense_ptr);
8437
8438                 if (copy_to_user(uptr, sense, ioc->sense_len)) {
8439                         dev_err(&instance->pdev->dev, "Failed to copy out to user "
8440                                         "sense data\n");
8441                         error = -EFAULT;
8442                         goto out;
8443                 }
8444         }
8445
8446         /*
8447          * copy the status codes returned by the fw
8448          */
8449         if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
8450                          &cmd->frame->hdr.cmd_status, sizeof(u8))) {
8451                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error copying out cmd_status\n");
8452                 error = -EFAULT;
8453         }
8454
8455 out:
8456         if (sense) {
8457                 dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
8458                                     sense, sense_handle);
8459         }
8460
8461         for (i = 0; i < ioc->sge_count; i++) {
8462                 if (kbuff_arr[i]) {
8463                         if (instance->consistent_mask_64bit)
8464                                 dma_free_coherent(&instance->pdev->dev,
8465                                         le32_to_cpu(kern_sge64[i].length),
8466                                         kbuff_arr[i],
8467                                         le64_to_cpu(kern_sge64[i].phys_addr));
8468                         else
8469                                 dma_free_coherent(&instance->pdev->dev,
8470                                         le32_to_cpu(kern_sge32[i].length),
8471                                         kbuff_arr[i],
8472                                         le32_to_cpu(kern_sge32[i].phys_addr));
8473                         kbuff_arr[i] = NULL;
8474                 }
8475         }
8476
8477         megasas_return_cmd(instance, cmd);
8478         return error;
8479 }
8480
8481 static struct megasas_iocpacket *
8482 megasas_compat_iocpacket_get_user(void __user *arg)
8483 {
8484         struct megasas_iocpacket *ioc;
8485         struct compat_megasas_iocpacket __user *cioc = arg;
8486         size_t size;
8487         int err = -EFAULT;
8488         int i;
8489
8490         ioc = kzalloc(sizeof(*ioc), GFP_KERNEL);
8491         if (!ioc)
8492                 return ERR_PTR(-ENOMEM);
8493         size = offsetof(struct megasas_iocpacket, frame) + sizeof(ioc->frame);
8494         if (copy_from_user(ioc, arg, size))
8495                 goto out;
8496
8497         for (i = 0; i < MAX_IOCTL_SGE; i++) {
8498                 compat_uptr_t iov_base;
8499
8500                 if (get_user(iov_base, &cioc->sgl[i].iov_base) ||
8501                     get_user(ioc->sgl[i].iov_len, &cioc->sgl[i].iov_len))
8502                         goto out;
8503
8504                 ioc->sgl[i].iov_base = compat_ptr(iov_base);
8505         }
8506
8507         return ioc;
8508 out:
8509         kfree(ioc);
8510         return ERR_PTR(err);
8511 }
8512
8513 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
8514 {
8515         struct megasas_iocpacket __user *user_ioc =
8516             (struct megasas_iocpacket __user *)arg;
8517         struct megasas_iocpacket *ioc;
8518         struct megasas_instance *instance;
8519         int error;
8520
8521         if (in_compat_syscall())
8522                 ioc = megasas_compat_iocpacket_get_user(user_ioc);
8523         else
8524                 ioc = memdup_user(user_ioc, sizeof(struct megasas_iocpacket));
8525
8526         if (IS_ERR(ioc))
8527                 return PTR_ERR(ioc);
8528
8529         instance = megasas_lookup_instance(ioc->host_no);
8530         if (!instance) {
8531                 error = -ENODEV;
8532                 goto out_kfree_ioc;
8533         }
8534
8535         /* Block ioctls in VF mode */
8536         if (instance->requestorId && !allow_vf_ioctls) {
8537                 error = -ENODEV;
8538                 goto out_kfree_ioc;
8539         }
8540
8541         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
8542                 dev_err(&instance->pdev->dev, "Controller in crit error\n");
8543                 error = -ENODEV;
8544                 goto out_kfree_ioc;
8545         }
8546
8547         if (instance->unload == 1) {
8548                 error = -ENODEV;
8549                 goto out_kfree_ioc;
8550         }
8551
8552         if (down_interruptible(&instance->ioctl_sem)) {
8553                 error = -ERESTARTSYS;
8554                 goto out_kfree_ioc;
8555         }
8556
8557         if  (megasas_wait_for_adapter_operational(instance)) {
8558                 error = -ENODEV;
8559                 goto out_up;
8560         }
8561
8562         error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
8563 out_up:
8564         up(&instance->ioctl_sem);
8565
8566 out_kfree_ioc:
8567         kfree(ioc);
8568         return error;
8569 }
8570
8571 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
8572 {
8573         struct megasas_instance *instance;
8574         struct megasas_aen aen;
8575         int error;
8576
8577         if (file->private_data != file) {
8578                 printk(KERN_DEBUG "megasas: fasync_helper was not "
8579                        "called first\n");
8580                 return -EINVAL;
8581         }
8582
8583         if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
8584                 return -EFAULT;
8585
8586         instance = megasas_lookup_instance(aen.host_no);
8587
8588         if (!instance)
8589                 return -ENODEV;
8590
8591         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
8592                 return -ENODEV;
8593         }
8594
8595         if (instance->unload == 1) {
8596                 return -ENODEV;
8597         }
8598
8599         if  (megasas_wait_for_adapter_operational(instance))
8600                 return -ENODEV;
8601
8602         mutex_lock(&instance->reset_mutex);
8603         error = megasas_register_aen(instance, aen.seq_num,
8604                                      aen.class_locale_word);
8605         mutex_unlock(&instance->reset_mutex);
8606         return error;
8607 }
8608
8609 /**
8610  * megasas_mgmt_ioctl - char node ioctl entry point
8611  * @file:       char device file pointer
8612  * @cmd:        ioctl command
8613  * @arg:        ioctl command arguments address
8614  */
8615 static long
8616 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
8617 {
8618         switch (cmd) {
8619         case MEGASAS_IOC_FIRMWARE:
8620                 return megasas_mgmt_ioctl_fw(file, arg);
8621
8622         case MEGASAS_IOC_GET_AEN:
8623                 return megasas_mgmt_ioctl_aen(file, arg);
8624         }
8625
8626         return -ENOTTY;
8627 }
8628
8629 #ifdef CONFIG_COMPAT
8630 static long
8631 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
8632                           unsigned long arg)
8633 {
8634         switch (cmd) {
8635         case MEGASAS_IOC_FIRMWARE32:
8636                 return megasas_mgmt_ioctl_fw(file, arg);
8637         case MEGASAS_IOC_GET_AEN:
8638                 return megasas_mgmt_ioctl_aen(file, arg);
8639         }
8640
8641         return -ENOTTY;
8642 }
8643 #endif
8644
8645 /*
8646  * File operations structure for management interface
8647  */
8648 static const struct file_operations megasas_mgmt_fops = {
8649         .owner = THIS_MODULE,
8650         .open = megasas_mgmt_open,
8651         .fasync = megasas_mgmt_fasync,
8652         .unlocked_ioctl = megasas_mgmt_ioctl,
8653         .poll = megasas_mgmt_poll,
8654 #ifdef CONFIG_COMPAT
8655         .compat_ioctl = megasas_mgmt_compat_ioctl,
8656 #endif
8657         .llseek = noop_llseek,
8658 };
8659
8660 static SIMPLE_DEV_PM_OPS(megasas_pm_ops, megasas_suspend, megasas_resume);
8661
8662 /*
8663  * PCI hotplug support registration structure
8664  */
8665 static struct pci_driver megasas_pci_driver = {
8666
8667         .name = "megaraid_sas",
8668         .id_table = megasas_pci_table,
8669         .probe = megasas_probe_one,
8670         .remove = megasas_detach_one,
8671         .driver.pm = &megasas_pm_ops,
8672         .shutdown = megasas_shutdown,
8673 };
8674
8675 /*
8676  * Sysfs driver attributes
8677  */
8678 static ssize_t version_show(struct device_driver *dd, char *buf)
8679 {
8680         return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
8681                         MEGASAS_VERSION);
8682 }
8683 static DRIVER_ATTR_RO(version);
8684
8685 static ssize_t release_date_show(struct device_driver *dd, char *buf)
8686 {
8687         return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n",
8688                 MEGASAS_RELDATE);
8689 }
8690 static DRIVER_ATTR_RO(release_date);
8691
8692 static ssize_t support_poll_for_event_show(struct device_driver *dd, char *buf)
8693 {
8694         return sprintf(buf, "%u\n", support_poll_for_event);
8695 }
8696 static DRIVER_ATTR_RO(support_poll_for_event);
8697
8698 static ssize_t support_device_change_show(struct device_driver *dd, char *buf)
8699 {
8700         return sprintf(buf, "%u\n", support_device_change);
8701 }
8702 static DRIVER_ATTR_RO(support_device_change);
8703
8704 static ssize_t dbg_lvl_show(struct device_driver *dd, char *buf)
8705 {
8706         return sprintf(buf, "%u\n", megasas_dbg_lvl);
8707 }
8708
8709 static ssize_t dbg_lvl_store(struct device_driver *dd, const char *buf,
8710                              size_t count)
8711 {
8712         int retval = count;
8713
8714         if (sscanf(buf, "%u", &megasas_dbg_lvl) < 1) {
8715                 printk(KERN_ERR "megasas: could not set dbg_lvl\n");
8716                 retval = -EINVAL;
8717         }
8718         return retval;
8719 }
8720 static DRIVER_ATTR_RW(dbg_lvl);
8721
8722 static ssize_t
8723 support_nvme_encapsulation_show(struct device_driver *dd, char *buf)
8724 {
8725         return sprintf(buf, "%u\n", support_nvme_encapsulation);
8726 }
8727
8728 static DRIVER_ATTR_RO(support_nvme_encapsulation);
8729
8730 static ssize_t
8731 support_pci_lane_margining_show(struct device_driver *dd, char *buf)
8732 {
8733         return sprintf(buf, "%u\n", support_pci_lane_margining);
8734 }
8735
8736 static DRIVER_ATTR_RO(support_pci_lane_margining);
8737
8738 static inline void megasas_remove_scsi_device(struct scsi_device *sdev)
8739 {
8740         sdev_printk(KERN_INFO, sdev, "SCSI device is removed\n");
8741         scsi_remove_device(sdev);
8742         scsi_device_put(sdev);
8743 }
8744
8745 /**
8746  * megasas_update_device_list - Update the PD and LD device list from FW
8747  *                              after an AEN event notification
8748  * @instance:                   Adapter soft state
8749  * @event_type:                 Indicates type of event (PD or LD event)
8750  *
8751  * @return:                     Success or failure
8752  *
8753  * Issue DCMDs to Firmware to update the internal device list in driver.
8754  * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination
8755  * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list.
8756  */
8757 static
8758 int megasas_update_device_list(struct megasas_instance *instance,
8759                                int event_type)
8760 {
8761         int dcmd_ret;
8762
8763         if (instance->enable_fw_dev_list) {
8764                 return megasas_host_device_list_query(instance, false);
8765         } else {
8766                 if (event_type & SCAN_PD_CHANNEL) {
8767                         dcmd_ret = megasas_get_pd_list(instance);
8768                         if (dcmd_ret != DCMD_SUCCESS)
8769                                 return dcmd_ret;
8770                 }
8771
8772                 if (event_type & SCAN_VD_CHANNEL) {
8773                         if (!instance->requestorId ||
8774                         megasas_get_ld_vf_affiliation(instance, 0)) {
8775                                 return megasas_ld_list_query(instance,
8776                                                 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST);
8777                         }
8778                 }
8779         }
8780         return DCMD_SUCCESS;
8781 }
8782
8783 /**
8784  * megasas_add_remove_devices - Add/remove devices to SCSI mid-layer
8785  *                              after an AEN event notification
8786  * @instance:                   Adapter soft state
8787  * @scan_type:                  Indicates type of devices (PD/LD) to add
8788  * @return                      void
8789  */
8790 static
8791 void megasas_add_remove_devices(struct megasas_instance *instance,
8792                                 int scan_type)
8793 {
8794         int i, j;
8795         u16 pd_index = 0;
8796         u16 ld_index = 0;
8797         u16 channel = 0, id = 0;
8798         struct Scsi_Host *host;
8799         struct scsi_device *sdev1;
8800         struct MR_HOST_DEVICE_LIST *targetid_list = NULL;
8801         struct MR_HOST_DEVICE_LIST_ENTRY *targetid_entry = NULL;
8802
8803         host = instance->host;
8804
8805         if (instance->enable_fw_dev_list) {
8806                 targetid_list = instance->host_device_list_buf;
8807                 for (i = 0; i < targetid_list->count; i++) {
8808                         targetid_entry = &targetid_list->host_device_list[i];
8809                         if (targetid_entry->flags.u.bits.is_sys_pd) {
8810                                 channel = le16_to_cpu(targetid_entry->target_id) /
8811                                                 MEGASAS_MAX_DEV_PER_CHANNEL;
8812                                 id = le16_to_cpu(targetid_entry->target_id) %
8813                                                 MEGASAS_MAX_DEV_PER_CHANNEL;
8814                         } else {
8815                                 channel = MEGASAS_MAX_PD_CHANNELS +
8816                                           (le16_to_cpu(targetid_entry->target_id) /
8817                                            MEGASAS_MAX_DEV_PER_CHANNEL);
8818                                 id = le16_to_cpu(targetid_entry->target_id) %
8819                                                 MEGASAS_MAX_DEV_PER_CHANNEL;
8820                         }
8821                         sdev1 = scsi_device_lookup(host, channel, id, 0);
8822                         if (!sdev1) {
8823                                 scsi_add_device(host, channel, id, 0);
8824                         } else {
8825                                 scsi_device_put(sdev1);
8826                         }
8827                 }
8828         }
8829
8830         if (scan_type & SCAN_PD_CHANNEL) {
8831                 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
8832                         for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
8833                                 pd_index = i * MEGASAS_MAX_DEV_PER_CHANNEL + j;
8834                                 sdev1 = scsi_device_lookup(host, i, j, 0);
8835                                 if (instance->pd_list[pd_index].driveState ==
8836                                                         MR_PD_STATE_SYSTEM) {
8837                                         if (!sdev1)
8838                                                 scsi_add_device(host, i, j, 0);
8839                                         else
8840                                                 scsi_device_put(sdev1);
8841                                 } else {
8842                                         if (sdev1)
8843                                                 megasas_remove_scsi_device(sdev1);
8844                                 }
8845                         }
8846                 }
8847         }
8848
8849         if (scan_type & SCAN_VD_CHANNEL) {
8850                 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
8851                         for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
8852                                 ld_index = (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
8853                                 sdev1 = scsi_device_lookup(host,
8854                                                 MEGASAS_MAX_PD_CHANNELS + i, j, 0);
8855                                 if (instance->ld_ids[ld_index] != 0xff) {
8856                                         if (!sdev1)
8857                                                 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
8858                                         else
8859                                                 scsi_device_put(sdev1);
8860                                 } else {
8861                                         if (sdev1)
8862                                                 megasas_remove_scsi_device(sdev1);
8863                                 }
8864                         }
8865                 }
8866         }
8867
8868 }
8869
8870 static void
8871 megasas_aen_polling(struct work_struct *work)
8872 {
8873         struct megasas_aen_event *ev =
8874                 container_of(work, struct megasas_aen_event, hotplug_work.work);
8875         struct megasas_instance *instance = ev->instance;
8876         union megasas_evt_class_locale class_locale;
8877         int event_type = 0;
8878         u32 seq_num;
8879         u16 ld_target_id;
8880         int error;
8881         u8  dcmd_ret = DCMD_SUCCESS;
8882         struct scsi_device *sdev1;
8883
8884         if (!instance) {
8885                 printk(KERN_ERR "invalid instance!\n");
8886                 kfree(ev);
8887                 return;
8888         }
8889
8890         /* Don't run the event workqueue thread if OCR is running */
8891         mutex_lock(&instance->reset_mutex);
8892
8893         instance->ev = NULL;
8894         if (instance->evt_detail) {
8895                 megasas_decode_evt(instance);
8896
8897                 switch (le32_to_cpu(instance->evt_detail->code)) {
8898
8899                 case MR_EVT_PD_INSERTED:
8900                 case MR_EVT_PD_REMOVED:
8901                         event_type = SCAN_PD_CHANNEL;
8902                         break;
8903
8904                 case MR_EVT_LD_OFFLINE:
8905                 case MR_EVT_LD_DELETED:
8906                         ld_target_id = instance->evt_detail->args.ld.target_id;
8907                         sdev1 = scsi_device_lookup(instance->host,
8908                                                    MEGASAS_MAX_PD_CHANNELS +
8909                                                    (ld_target_id / MEGASAS_MAX_DEV_PER_CHANNEL),
8910                                                    (ld_target_id % MEGASAS_MAX_DEV_PER_CHANNEL),
8911                                                    0);
8912                         if (sdev1)
8913                                 megasas_remove_scsi_device(sdev1);
8914
8915                         event_type = SCAN_VD_CHANNEL;
8916                         break;
8917                 case MR_EVT_LD_CREATED:
8918                         event_type = SCAN_VD_CHANNEL;
8919                         break;
8920
8921                 case MR_EVT_CFG_CLEARED:
8922                 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
8923                 case MR_EVT_FOREIGN_CFG_IMPORTED:
8924                 case MR_EVT_LD_STATE_CHANGE:
8925                         event_type = SCAN_PD_CHANNEL | SCAN_VD_CHANNEL;
8926                         dev_info(&instance->pdev->dev, "scanning for scsi%d...\n",
8927                                 instance->host->host_no);
8928                         break;
8929
8930                 case MR_EVT_CTRL_PROP_CHANGED:
8931                         dcmd_ret = megasas_get_ctrl_info(instance);
8932                         if (dcmd_ret == DCMD_SUCCESS &&
8933                             instance->snapdump_wait_time) {
8934                                 megasas_get_snapdump_properties(instance);
8935                                 dev_info(&instance->pdev->dev,
8936                                          "Snap dump wait time\t: %d\n",
8937                                          instance->snapdump_wait_time);
8938                         }
8939                         break;
8940                 default:
8941                         event_type = 0;
8942                         break;
8943                 }
8944         } else {
8945                 dev_err(&instance->pdev->dev, "invalid evt_detail!\n");
8946                 mutex_unlock(&instance->reset_mutex);
8947                 kfree(ev);
8948                 return;
8949         }
8950
8951         if (event_type)
8952                 dcmd_ret = megasas_update_device_list(instance, event_type);
8953
8954         mutex_unlock(&instance->reset_mutex);
8955
8956         if (event_type && dcmd_ret == DCMD_SUCCESS)
8957                 megasas_add_remove_devices(instance, event_type);
8958
8959         if (dcmd_ret == DCMD_SUCCESS)
8960                 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1;
8961         else
8962                 seq_num = instance->last_seq_num;
8963
8964         /* Register AEN with FW for latest sequence number plus 1 */
8965         class_locale.members.reserved = 0;
8966         class_locale.members.locale = MR_EVT_LOCALE_ALL;
8967         class_locale.members.class = MR_EVT_CLASS_DEBUG;
8968
8969         if (instance->aen_cmd != NULL) {
8970                 kfree(ev);
8971                 return;
8972         }
8973
8974         mutex_lock(&instance->reset_mutex);
8975         error = megasas_register_aen(instance, seq_num,
8976                                         class_locale.word);
8977         if (error)
8978                 dev_err(&instance->pdev->dev,
8979                         "register aen failed error %x\n", error);
8980
8981         mutex_unlock(&instance->reset_mutex);
8982         kfree(ev);
8983 }
8984
8985 /**
8986  * megasas_init - Driver load entry point
8987  */
8988 static int __init megasas_init(void)
8989 {
8990         int rval;
8991
8992         /*
8993          * Booted in kdump kernel, minimize memory footprints by
8994          * disabling few features
8995          */
8996         if (reset_devices) {
8997                 msix_vectors = 1;
8998                 rdpq_enable = 0;
8999                 dual_qdepth_disable = 1;
9000                 poll_queues = 0;
9001         }
9002
9003         /*
9004          * Announce driver version and other information
9005          */
9006         pr_info("megasas: %s\n", MEGASAS_VERSION);
9007
9008         megasas_dbg_lvl = 0;
9009         support_poll_for_event = 2;
9010         support_device_change = 1;
9011         support_nvme_encapsulation = true;
9012         support_pci_lane_margining = true;
9013
9014         memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
9015
9016         /*
9017          * Register character device node
9018          */
9019         rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
9020
9021         if (rval < 0) {
9022                 printk(KERN_DEBUG "megasas: failed to open device node\n");
9023                 return rval;
9024         }
9025
9026         megasas_mgmt_majorno = rval;
9027
9028         megasas_init_debugfs();
9029
9030         /*
9031          * Register ourselves as PCI hotplug module
9032          */
9033         rval = pci_register_driver(&megasas_pci_driver);
9034
9035         if (rval) {
9036                 printk(KERN_DEBUG "megasas: PCI hotplug registration failed \n");
9037                 goto err_pcidrv;
9038         }
9039
9040         if ((event_log_level < MFI_EVT_CLASS_DEBUG) ||
9041             (event_log_level > MFI_EVT_CLASS_DEAD)) {
9042                 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");
9043                 event_log_level = MFI_EVT_CLASS_CRITICAL;
9044         }
9045
9046         rval = driver_create_file(&megasas_pci_driver.driver,
9047                                   &driver_attr_version);
9048         if (rval)
9049                 goto err_dcf_attr_ver;
9050
9051         rval = driver_create_file(&megasas_pci_driver.driver,
9052                                   &driver_attr_release_date);
9053         if (rval)
9054                 goto err_dcf_rel_date;
9055
9056         rval = driver_create_file(&megasas_pci_driver.driver,
9057                                 &driver_attr_support_poll_for_event);
9058         if (rval)
9059                 goto err_dcf_support_poll_for_event;
9060
9061         rval = driver_create_file(&megasas_pci_driver.driver,
9062                                   &driver_attr_dbg_lvl);
9063         if (rval)
9064                 goto err_dcf_dbg_lvl;
9065         rval = driver_create_file(&megasas_pci_driver.driver,
9066                                 &driver_attr_support_device_change);
9067         if (rval)
9068                 goto err_dcf_support_device_change;
9069
9070         rval = driver_create_file(&megasas_pci_driver.driver,
9071                                   &driver_attr_support_nvme_encapsulation);
9072         if (rval)
9073                 goto err_dcf_support_nvme_encapsulation;
9074
9075         rval = driver_create_file(&megasas_pci_driver.driver,
9076                                   &driver_attr_support_pci_lane_margining);
9077         if (rval)
9078                 goto err_dcf_support_pci_lane_margining;
9079
9080         return rval;
9081
9082 err_dcf_support_pci_lane_margining:
9083         driver_remove_file(&megasas_pci_driver.driver,
9084                            &driver_attr_support_nvme_encapsulation);
9085
9086 err_dcf_support_nvme_encapsulation:
9087         driver_remove_file(&megasas_pci_driver.driver,
9088                            &driver_attr_support_device_change);
9089
9090 err_dcf_support_device_change:
9091         driver_remove_file(&megasas_pci_driver.driver,
9092                            &driver_attr_dbg_lvl);
9093 err_dcf_dbg_lvl:
9094         driver_remove_file(&megasas_pci_driver.driver,
9095                         &driver_attr_support_poll_for_event);
9096 err_dcf_support_poll_for_event:
9097         driver_remove_file(&megasas_pci_driver.driver,
9098                            &driver_attr_release_date);
9099 err_dcf_rel_date:
9100         driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
9101 err_dcf_attr_ver:
9102         pci_unregister_driver(&megasas_pci_driver);
9103 err_pcidrv:
9104         megasas_exit_debugfs();
9105         unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
9106         return rval;
9107 }
9108
9109 /**
9110  * megasas_exit - Driver unload entry point
9111  */
9112 static void __exit megasas_exit(void)
9113 {
9114         driver_remove_file(&megasas_pci_driver.driver,
9115                            &driver_attr_dbg_lvl);
9116         driver_remove_file(&megasas_pci_driver.driver,
9117                         &driver_attr_support_poll_for_event);
9118         driver_remove_file(&megasas_pci_driver.driver,
9119                         &driver_attr_support_device_change);
9120         driver_remove_file(&megasas_pci_driver.driver,
9121                            &driver_attr_release_date);
9122         driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
9123         driver_remove_file(&megasas_pci_driver.driver,
9124                            &driver_attr_support_nvme_encapsulation);
9125         driver_remove_file(&megasas_pci_driver.driver,
9126                            &driver_attr_support_pci_lane_margining);
9127
9128         pci_unregister_driver(&megasas_pci_driver);
9129         megasas_exit_debugfs();
9130         unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
9131 }
9132
9133 module_init(megasas_init);
9134 module_exit(megasas_exit);