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