drivers/scsi/megaraid/megaraid_sas_base.c

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