drivers/scsi/megaraid/megaraid_sas_base.c

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