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 host_tagset_enable = 1;
 118 module_param(host_tagset_enable, int, 0444);
 119 MODULE_PARM_DESC(host_tagset_enable, "Shared host tagset enable/disable Default: enable(1)");
 120
 121 MODULE_LICENSE("GPL");
 122 MODULE_VERSION(MEGASAS_VERSION);
 123 MODULE_AUTHOR("megaraidlinux.pdl@broadcom.com");
 124 MODULE_DESCRIPTION("Broadcom MegaRAID SAS Driver");
 125
 126 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
 127 static int megasas_get_pd_list(struct megasas_instance *instance);
 128 static int megasas_ld_list_query(struct megasas_instance *instance,
 129                                  u8 query_type);
 130 static int megasas_issue_init_mfi(struct megasas_instance *instance);
 131 static int megasas_register_aen(struct megasas_instance *instance,
 132                                 u32 seq_num, u32 class_locale_word);
 133 static void megasas_get_pd_info(struct megasas_instance *instance,
 134                                 struct scsi_device *sdev);
 135
 136 /*
 137  * PCI ID table for all supported controllers
 138  */
 139 static struct pci_device_id megasas_pci_table[] = {
 140
 141         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)},
 142         /* xscale IOP */
 143         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)},
 144         /* ppc IOP */
 145         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)},
 146         /* ppc IOP */
 147         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)},
 148         /* gen2*/
 149         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)},
 150         /* gen2*/
 151         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)},
 152         /* skinny*/
 153         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)},
 154         /* skinny*/
 155         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)},
 156         /* xscale IOP, vega */
 157         {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
 158         /* xscale IOP */
 159         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)},
 160         /* Fusion */
 161         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_PLASMA)},
 162         /* Plasma */
 163         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)},
 164         /* Invader */
 165         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FURY)},
 166         /* Fury */
 167         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER)},
 168         /* Intruder */
 169         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER_24)},
 170         /* Intruder 24 port*/
 171         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_52)},
 172         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_53)},
 173         /* VENTURA */
 174         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA)},
 175         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER)},
 176         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_HARPOON)},
 177         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_TOMCAT)},
 178         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA_4PORT)},
 179         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER_4PORT)},
 180         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E1)},
 181         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E2)},
 182         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E5)},
 183         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E6)},
 184         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E0)},
 185         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E3)},
 186         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E4)},
 187         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E7)},
 188         {}
 189 };
 190
 191 MODULE_DEVICE_TABLE(pci, megasas_pci_table);
 192
 193 static int megasas_mgmt_majorno;
 194 struct megasas_mgmt_info megasas_mgmt_info;
 195 static struct fasync_struct *megasas_async_queue;
 196 static DEFINE_MUTEX(megasas_async_queue_mutex);
 197
 198 static int megasas_poll_wait_aen;
 199 static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait);
 200 static u32 support_poll_for_event;
 201 u32 megasas_dbg_lvl;
 202 static u32 support_device_change;
 203 static bool support_nvme_encapsulation;
 204 static bool support_pci_lane_margining;
 205
 206 /* define lock for aen poll */
 207 static spinlock_t poll_aen_lock;
 208
 209 extern struct dentry *megasas_debugfs_root;
 210
 211 void
 212 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
 213                      u8 alt_status);
 214 static u32
 215 megasas_read_fw_status_reg_gen2(struct megasas_instance *instance);
 216 static int
 217 megasas_adp_reset_gen2(struct megasas_instance *instance,
 218                        struct megasas_register_set __iomem *reg_set);
 219 static irqreturn_t megasas_isr(int irq, void *devp);
 220 static u32
 221 megasas_init_adapter_mfi(struct megasas_instance *instance);
 222 u32
 223 megasas_build_and_issue_cmd(struct megasas_instance *instance,
 224                             struct scsi_cmnd *scmd);
 225 static void megasas_complete_cmd_dpc(unsigned long instance_addr);
 226 int
 227 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
 228         int seconds);
 229 void megasas_fusion_ocr_wq(struct work_struct *work);
 230 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
 231                                          int initial);
 232 static int
 233 megasas_set_dma_mask(struct megasas_instance *instance);
 234 static int
 235 megasas_alloc_ctrl_mem(struct megasas_instance *instance);
 236 static inline void
 237 megasas_free_ctrl_mem(struct megasas_instance *instance);
 238 static inline int
 239 megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance);
 240 static inline void
 241 megasas_free_ctrl_dma_buffers(struct megasas_instance *instance);
 242 static inline void
 243 megasas_init_ctrl_params(struct megasas_instance *instance);
 244
 245 u32 megasas_readl(struct megasas_instance *instance,
 246                   const volatile void __iomem *addr)
 247 {
 248         u32 i = 0, ret_val;
 249         /*
 250          * Due to a HW errata in Aero controllers, reads to certain
 251          * Fusion registers could intermittently return all zeroes.
 252          * This behavior is transient in nature and subsequent reads will
 253          * return valid value. As a workaround in driver, retry readl for
 254          * upto three times until a non-zero value is read.
 255          */
 256         if (instance->adapter_type == AERO_SERIES) {
 257                 do {
 258                         ret_val = readl(addr);
 259                         i++;
 260                 } while (ret_val == 0 && i < 3);
 261                 return ret_val;
 262         } else {
 263                 return readl(addr);
 264         }
 265 }
 266
 267 /**
 268  * megasas_set_dma_settings -   Populate DMA address, length and flags for DCMDs
 269  * @instance:                   Adapter soft state
 270  * @dcmd:                       DCMD frame inside MFI command
 271  * @dma_addr:                   DMA address of buffer to be passed to FW
 272  * @dma_len:                    Length of DMA buffer to be passed to FW
 273  * @return:                     void
 274  */
 275 void megasas_set_dma_settings(struct megasas_instance *instance,
 276                               struct megasas_dcmd_frame *dcmd,
 277                               dma_addr_t dma_addr, u32 dma_len)
 278 {
 279         if (instance->consistent_mask_64bit) {
 280                 dcmd->sgl.sge64[0].phys_addr = cpu_to_le64(dma_addr);
 281                 dcmd->sgl.sge64[0].length = cpu_to_le32(dma_len);
 282                 dcmd->flags = cpu_to_le16(dcmd->flags | MFI_FRAME_SGL64);
 283
 284         } else {
 285                 dcmd->sgl.sge32[0].phys_addr =
 286                                 cpu_to_le32(lower_32_bits(dma_addr));
 287                 dcmd->sgl.sge32[0].length = cpu_to_le32(dma_len);
 288                 dcmd->flags = cpu_to_le16(dcmd->flags);
 289         }
 290 }
 291
 292 static void
 293 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
 294 {
 295         instance->instancet->fire_cmd(instance,
 296                 cmd->frame_phys_addr, 0, instance->reg_set);
 297         return;
 298 }
 299
 300 /**
 301  * megasas_get_cmd -    Get a command from the free pool
 302  * @instance:           Adapter soft state
 303  *
 304  * Returns a free command from the pool
 305  */
 306 struct megasas_cmd *megasas_get_cmd(struct megasas_instance
 307                                                   *instance)
 308 {
 309         unsigned long flags;
 310         struct megasas_cmd *cmd = NULL;
 311
 312         spin_lock_irqsave(&instance->mfi_pool_lock, flags);
 313
 314         if (!list_empty(&instance->cmd_pool)) {
 315                 cmd = list_entry((&instance->cmd_pool)->next,
 316                                  struct megasas_cmd, list);
 317                 list_del_init(&cmd->list);
 318         } else {
 319                 dev_err(&instance->pdev->dev, "Command pool empty!\n");
 320         }
 321
 322         spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
 323         return cmd;
 324 }
 325
 326 /**
 327  * megasas_return_cmd - Return a cmd to free command pool
 328  * @instance:           Adapter soft state
 329  * @cmd:                Command packet to be returned to free command pool
 330  */
 331 void
 332 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
 333 {
 334         unsigned long flags;
 335         u32 blk_tags;
 336         struct megasas_cmd_fusion *cmd_fusion;
 337         struct fusion_context *fusion = instance->ctrl_context;
 338
 339         /* This flag is used only for fusion adapter.
 340          * Wait for Interrupt for Polled mode DCMD
 341          */
 342         if (cmd->flags & DRV_DCMD_POLLED_MODE)
 343                 return;
 344
 345         spin_lock_irqsave(&instance->mfi_pool_lock, flags);
 346
 347         if (fusion) {
 348                 blk_tags = instance->max_scsi_cmds + cmd->index;
 349                 cmd_fusion = fusion->cmd_list[blk_tags];
 350                 megasas_return_cmd_fusion(instance, cmd_fusion);
 351         }
 352         cmd->scmd = NULL;
 353         cmd->frame_count = 0;
 354         cmd->flags = 0;
 355         memset(cmd->frame, 0, instance->mfi_frame_size);
 356         cmd->frame->io.context = cpu_to_le32(cmd->index);
 357         if (!fusion && reset_devices)
 358                 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
 359         list_add(&cmd->list, (&instance->cmd_pool)->next);
 360
 361         spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
 362
 363 }
 364
 365 static const char *
 366 format_timestamp(uint32_t timestamp)
 367 {
 368         static char buffer[32];
 369
 370         if ((timestamp & 0xff000000) == 0xff000000)
 371                 snprintf(buffer, sizeof(buffer), "boot + %us", timestamp &
 372                 0x00ffffff);
 373         else
 374                 snprintf(buffer, sizeof(buffer), "%us", timestamp);
 375         return buffer;
 376 }
 377
 378 static const char *
 379 format_class(int8_t class)
 380 {
 381         static char buffer[6];
 382
 383         switch (class) {
 384         case MFI_EVT_CLASS_DEBUG:
 385                 return "debug";
 386         case MFI_EVT_CLASS_PROGRESS:
 387                 return "progress";
 388         case MFI_EVT_CLASS_INFO:
 389                 return "info";
 390         case MFI_EVT_CLASS_WARNING:
 391                 return "WARN";
 392         case MFI_EVT_CLASS_CRITICAL:
 393                 return "CRIT";
 394         case MFI_EVT_CLASS_FATAL:
 395                 return "FATAL";
 396         case MFI_EVT_CLASS_DEAD:
 397                 return "DEAD";
 398         default:
 399                 snprintf(buffer, sizeof(buffer), "%d", class);
 400                 return buffer;
 401         }
 402 }
 403
 404 /**
 405   * megasas_decode_evt: Decode FW AEN event and print critical event
 406   * for information.
 407   * @instance:                  Adapter soft state
 408   */
 409 static void
 410 megasas_decode_evt(struct megasas_instance *instance)
 411 {
 412         struct megasas_evt_detail *evt_detail = instance->evt_detail;
 413         union megasas_evt_class_locale class_locale;
 414         class_locale.word = le32_to_cpu(evt_detail->cl.word);
 415
 416         if ((event_log_level < MFI_EVT_CLASS_DEBUG) ||
 417             (event_log_level > MFI_EVT_CLASS_DEAD)) {
 418                 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");
 419                 event_log_level = MFI_EVT_CLASS_CRITICAL;
 420         }
 421
 422         if (class_locale.members.class >= event_log_level)
 423                 dev_info(&instance->pdev->dev, "%d (%s/0x%04x/%s) - %s\n",
 424                         le32_to_cpu(evt_detail->seq_num),
 425                         format_timestamp(le32_to_cpu(evt_detail->time_stamp)),
 426                         (class_locale.members.locale),
 427                         format_class(class_locale.members.class),
 428                         evt_detail->description);
 429 }
 430
 431 /*
 432  * The following functions are defined for xscale
 433  * (deviceid : 1064R, PERC5) controllers
 434  */
 435
 436 /**
 437  * megasas_enable_intr_xscale - Enables interrupts
 438  * @instance:   Adapter soft state
 439  */
 440 static inline void
 441 megasas_enable_intr_xscale(struct megasas_instance *instance)
 442 {
 443         struct megasas_register_set __iomem *regs;
 444
 445         regs = instance->reg_set;
 446         writel(0, &(regs)->outbound_intr_mask);
 447
 448         /* Dummy readl to force pci flush */
 449         readl(&regs->outbound_intr_mask);
 450 }
 451
 452 /**
 453  * megasas_disable_intr_xscale -Disables interrupt
 454  * @instance:   Adapter soft state
 455  */
 456 static inline void
 457 megasas_disable_intr_xscale(struct megasas_instance *instance)
 458 {
 459         struct megasas_register_set __iomem *regs;
 460         u32 mask = 0x1f;
 461
 462         regs = instance->reg_set;
 463         writel(mask, &regs->outbound_intr_mask);
 464         /* Dummy readl to force pci flush */
 465         readl(&regs->outbound_intr_mask);
 466 }
 467
 468 /**
 469  * megasas_read_fw_status_reg_xscale - returns the current FW status value
 470  * @instance:   Adapter soft state
 471  */
 472 static u32
 473 megasas_read_fw_status_reg_xscale(struct megasas_instance *instance)
 474 {
 475         return readl(&instance->reg_set->outbound_msg_0);
 476 }
 477 /**
 478  * megasas_clear_interrupt_xscale -     Check & clear interrupt
 479  * @instance:   Adapter soft state
 480  */
 481 static int
 482 megasas_clear_intr_xscale(struct megasas_instance *instance)
 483 {
 484         u32 status;
 485         u32 mfiStatus = 0;
 486         struct megasas_register_set __iomem *regs;
 487         regs = instance->reg_set;
 488
 489         /*
 490          * Check if it is our interrupt
 491          */
 492         status = readl(&regs->outbound_intr_status);
 493
 494         if (status & MFI_OB_INTR_STATUS_MASK)
 495                 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
 496         if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT)
 497                 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
 498
 499         /*
 500          * Clear the interrupt by writing back the same value
 501          */
 502         if (mfiStatus)
 503                 writel(status, &regs->outbound_intr_status);
 504
 505         /* Dummy readl to force pci flush */
 506         readl(&regs->outbound_intr_status);
 507
 508         return mfiStatus;
 509 }
 510
 511 /**
 512  * megasas_fire_cmd_xscale -    Sends command to the FW
 513  * @instance:           Adapter soft state
 514  * @frame_phys_addr :   Physical address of cmd
 515  * @frame_count :       Number of frames for the command
 516  * @regs :              MFI register set
 517  */
 518 static inline void
 519 megasas_fire_cmd_xscale(struct megasas_instance *instance,
 520                 dma_addr_t frame_phys_addr,
 521                 u32 frame_count,
 522                 struct megasas_register_set __iomem *regs)
 523 {
 524         unsigned long flags;
 525
 526         spin_lock_irqsave(&instance->hba_lock, flags);
 527         writel((frame_phys_addr >> 3)|(frame_count),
 528                &(regs)->inbound_queue_port);
 529         spin_unlock_irqrestore(&instance->hba_lock, flags);
 530 }
 531
 532 /**
 533  * megasas_adp_reset_xscale -  For controller reset
 534  * @instance:   Adapter soft state
 535  * @regs:       MFI register set
 536  */
 537 static int
 538 megasas_adp_reset_xscale(struct megasas_instance *instance,
 539         struct megasas_register_set __iomem *regs)
 540 {
 541         u32 i;
 542         u32 pcidata;
 543
 544         writel(MFI_ADP_RESET, &regs->inbound_doorbell);
 545
 546         for (i = 0; i < 3; i++)
 547                 msleep(1000); /* sleep for 3 secs */
 548         pcidata  = 0;
 549         pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata);
 550         dev_notice(&instance->pdev->dev, "pcidata = %x\n", pcidata);
 551         if (pcidata & 0x2) {
 552                 dev_notice(&instance->pdev->dev, "mfi 1068 offset read=%x\n", pcidata);
 553                 pcidata &= ~0x2;
 554                 pci_write_config_dword(instance->pdev,
 555                                 MFI_1068_PCSR_OFFSET, pcidata);
 556
 557                 for (i = 0; i < 2; i++)
 558                         msleep(1000); /* need to wait 2 secs again */
 559
 560                 pcidata  = 0;
 561                 pci_read_config_dword(instance->pdev,
 562                                 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata);
 563                 dev_notice(&instance->pdev->dev, "1068 offset handshake read=%x\n", pcidata);
 564                 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) {
 565                         dev_notice(&instance->pdev->dev, "1068 offset pcidt=%x\n", pcidata);
 566                         pcidata = 0;
 567                         pci_write_config_dword(instance->pdev,
 568                                 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata);
 569                 }
 570         }
 571         return 0;
 572 }
 573
 574 /**
 575  * megasas_check_reset_xscale - For controller reset check
 576  * @instance:   Adapter soft state
 577  * @regs:       MFI register set
 578  */
 579 static int
 580 megasas_check_reset_xscale(struct megasas_instance *instance,
 581                 struct megasas_register_set __iomem *regs)
 582 {
 583         if ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) &&
 584             (le32_to_cpu(*instance->consumer) ==
 585                 MEGASAS_ADPRESET_INPROG_SIGN))
 586                 return 1;
 587         return 0;
 588 }
 589
 590 static struct megasas_instance_template megasas_instance_template_xscale = {
 591
 592         .fire_cmd = megasas_fire_cmd_xscale,
 593         .enable_intr = megasas_enable_intr_xscale,
 594         .disable_intr = megasas_disable_intr_xscale,
 595         .clear_intr = megasas_clear_intr_xscale,
 596         .read_fw_status_reg = megasas_read_fw_status_reg_xscale,
 597         .adp_reset = megasas_adp_reset_xscale,
 598         .check_reset = megasas_check_reset_xscale,
 599         .service_isr = megasas_isr,
 600         .tasklet = megasas_complete_cmd_dpc,
 601         .init_adapter = megasas_init_adapter_mfi,
 602         .build_and_issue_cmd = megasas_build_and_issue_cmd,
 603         .issue_dcmd = megasas_issue_dcmd,
 604 };
 605
 606 /*
 607  * This is the end of set of functions & definitions specific
 608  * to xscale (deviceid : 1064R, PERC5) controllers
 609  */
 610
 611 /*
 612  * The following functions are defined for ppc (deviceid : 0x60)
 613  * controllers
 614  */
 615
 616 /**
 617  * megasas_enable_intr_ppc -    Enables interrupts
 618  * @instance:   Adapter soft state
 619  */
 620 static inline void
 621 megasas_enable_intr_ppc(struct megasas_instance *instance)
 622 {
 623         struct megasas_register_set __iomem *regs;
 624
 625         regs = instance->reg_set;
 626         writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
 627
 628         writel(~0x80000000, &(regs)->outbound_intr_mask);
 629
 630         /* Dummy readl to force pci flush */
 631         readl(&regs->outbound_intr_mask);
 632 }
 633
 634 /**
 635  * megasas_disable_intr_ppc -   Disable interrupt
 636  * @instance:   Adapter soft state
 637  */
 638 static inline void
 639 megasas_disable_intr_ppc(struct megasas_instance *instance)
 640 {
 641         struct megasas_register_set __iomem *regs;
 642         u32 mask = 0xFFFFFFFF;
 643
 644         regs = instance->reg_set;
 645         writel(mask, &regs->outbound_intr_mask);
 646         /* Dummy readl to force pci flush */
 647         readl(&regs->outbound_intr_mask);
 648 }
 649
 650 /**
 651  * megasas_read_fw_status_reg_ppc - returns the current FW status value
 652  * @instance:   Adapter soft state
 653  */
 654 static u32
 655 megasas_read_fw_status_reg_ppc(struct megasas_instance *instance)
 656 {
 657         return readl(&instance->reg_set->outbound_scratch_pad_0);
 658 }
 659
 660 /**
 661  * megasas_clear_interrupt_ppc -        Check & clear interrupt
 662  * @instance:   Adapter soft state
 663  */
 664 static int
 665 megasas_clear_intr_ppc(struct megasas_instance *instance)
 666 {
 667         u32 status, mfiStatus = 0;
 668         struct megasas_register_set __iomem *regs;
 669         regs = instance->reg_set;
 670
 671         /*
 672          * Check if it is our interrupt
 673          */
 674         status = readl(&regs->outbound_intr_status);
 675
 676         if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT)
 677                 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
 678
 679         if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT)
 680                 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
 681
 682         /*
 683          * Clear the interrupt by writing back the same value
 684          */
 685         writel(status, &regs->outbound_doorbell_clear);
 686
 687         /* Dummy readl to force pci flush */
 688         readl(&regs->outbound_doorbell_clear);
 689
 690         return mfiStatus;
 691 }
 692
 693 /**
 694  * megasas_fire_cmd_ppc -       Sends command to the FW
 695  * @instance:           Adapter soft state
 696  * @frame_phys_addr:    Physical address of cmd
 697  * @frame_count:        Number of frames for the command
 698  * @regs:               MFI register set
 699  */
 700 static inline void
 701 megasas_fire_cmd_ppc(struct megasas_instance *instance,
 702                 dma_addr_t frame_phys_addr,
 703                 u32 frame_count,
 704                 struct megasas_register_set __iomem *regs)
 705 {
 706         unsigned long flags;
 707
 708         spin_lock_irqsave(&instance->hba_lock, flags);
 709         writel((frame_phys_addr | (frame_count<<1))|1,
 710                         &(regs)->inbound_queue_port);
 711         spin_unlock_irqrestore(&instance->hba_lock, flags);
 712 }
 713
 714 /**
 715  * megasas_check_reset_ppc -    For controller reset check
 716  * @instance:   Adapter soft state
 717  * @regs:       MFI register set
 718  */
 719 static int
 720 megasas_check_reset_ppc(struct megasas_instance *instance,
 721                         struct megasas_register_set __iomem *regs)
 722 {
 723         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
 724                 return 1;
 725
 726         return 0;
 727 }
 728
 729 static struct megasas_instance_template megasas_instance_template_ppc = {
 730
 731         .fire_cmd = megasas_fire_cmd_ppc,
 732         .enable_intr = megasas_enable_intr_ppc,
 733         .disable_intr = megasas_disable_intr_ppc,
 734         .clear_intr = megasas_clear_intr_ppc,
 735         .read_fw_status_reg = megasas_read_fw_status_reg_ppc,
 736         .adp_reset = megasas_adp_reset_xscale,
 737         .check_reset = megasas_check_reset_ppc,
 738         .service_isr = megasas_isr,
 739         .tasklet = megasas_complete_cmd_dpc,
 740         .init_adapter = megasas_init_adapter_mfi,
 741         .build_and_issue_cmd = megasas_build_and_issue_cmd,
 742         .issue_dcmd = megasas_issue_dcmd,
 743 };
 744
 745 /**
 746  * megasas_enable_intr_skinny - Enables interrupts
 747  * @instance:   Adapter soft state
 748  */
 749 static inline void
 750 megasas_enable_intr_skinny(struct megasas_instance *instance)
 751 {
 752         struct megasas_register_set __iomem *regs;
 753
 754         regs = instance->reg_set;
 755         writel(0xFFFFFFFF, &(regs)->outbound_intr_mask);
 756
 757         writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
 758
 759         /* Dummy readl to force pci flush */
 760         readl(&regs->outbound_intr_mask);
 761 }
 762
 763 /**
 764  * megasas_disable_intr_skinny -        Disables interrupt
 765  * @instance:   Adapter soft state
 766  */
 767 static inline void
 768 megasas_disable_intr_skinny(struct megasas_instance *instance)
 769 {
 770         struct megasas_register_set __iomem *regs;
 771         u32 mask = 0xFFFFFFFF;
 772
 773         regs = instance->reg_set;
 774         writel(mask, &regs->outbound_intr_mask);
 775         /* Dummy readl to force pci flush */
 776         readl(&regs->outbound_intr_mask);
 777 }
 778
 779 /**
 780  * megasas_read_fw_status_reg_skinny - returns the current FW status value
 781  * @instance:   Adapter soft state
 782  */
 783 static u32
 784 megasas_read_fw_status_reg_skinny(struct megasas_instance *instance)
 785 {
 786         return readl(&instance->reg_set->outbound_scratch_pad_0);
 787 }
 788
 789 /**
 790  * megasas_clear_interrupt_skinny -     Check & clear interrupt
 791  * @instance:   Adapter soft state
 792  */
 793 static int
 794 megasas_clear_intr_skinny(struct megasas_instance *instance)
 795 {
 796         u32 status;
 797         u32 mfiStatus = 0;
 798         struct megasas_register_set __iomem *regs;
 799         regs = instance->reg_set;
 800
 801         /*
 802          * Check if it is our interrupt
 803          */
 804         status = readl(&regs->outbound_intr_status);
 805
 806         if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) {
 807                 return 0;
 808         }
 809
 810         /*
 811          * Check if it is our interrupt
 812          */
 813         if ((megasas_read_fw_status_reg_skinny(instance) & MFI_STATE_MASK) ==
 814             MFI_STATE_FAULT) {
 815                 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
 816         } else
 817                 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
 818
 819         /*
 820          * Clear the interrupt by writing back the same value
 821          */
 822         writel(status, &regs->outbound_intr_status);
 823
 824         /*
 825          * dummy read to flush PCI
 826          */
 827         readl(&regs->outbound_intr_status);
 828
 829         return mfiStatus;
 830 }
 831
 832 /**
 833  * megasas_fire_cmd_skinny -    Sends command to the FW
 834  * @instance:           Adapter soft state
 835  * @frame_phys_addr:    Physical address of cmd
 836  * @frame_count:        Number of frames for the command
 837  * @regs:               MFI register set
 838  */
 839 static inline void
 840 megasas_fire_cmd_skinny(struct megasas_instance *instance,
 841                         dma_addr_t frame_phys_addr,
 842                         u32 frame_count,
 843                         struct megasas_register_set __iomem *regs)
 844 {
 845         unsigned long flags;
 846
 847         spin_lock_irqsave(&instance->hba_lock, flags);
 848         writel(upper_32_bits(frame_phys_addr),
 849                &(regs)->inbound_high_queue_port);
 850         writel((lower_32_bits(frame_phys_addr) | (frame_count<<1))|1,
 851                &(regs)->inbound_low_queue_port);
 852         spin_unlock_irqrestore(&instance->hba_lock, flags);
 853 }
 854
 855 /**
 856  * megasas_check_reset_skinny - For controller reset check
 857  * @instance:   Adapter soft state
 858  * @regs:       MFI register set
 859  */
 860 static int
 861 megasas_check_reset_skinny(struct megasas_instance *instance,
 862                                 struct megasas_register_set __iomem *regs)
 863 {
 864         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
 865                 return 1;
 866
 867         return 0;
 868 }
 869
 870 static struct megasas_instance_template megasas_instance_template_skinny = {
 871
 872         .fire_cmd = megasas_fire_cmd_skinny,
 873         .enable_intr = megasas_enable_intr_skinny,
 874         .disable_intr = megasas_disable_intr_skinny,
 875         .clear_intr = megasas_clear_intr_skinny,
 876         .read_fw_status_reg = megasas_read_fw_status_reg_skinny,
 877         .adp_reset = megasas_adp_reset_gen2,
 878         .check_reset = megasas_check_reset_skinny,
 879         .service_isr = megasas_isr,
 880         .tasklet = megasas_complete_cmd_dpc,
 881         .init_adapter = megasas_init_adapter_mfi,
 882         .build_and_issue_cmd = megasas_build_and_issue_cmd,
 883         .issue_dcmd = megasas_issue_dcmd,
 884 };
 885
 886
 887 /*
 888  * The following functions are defined for gen2 (deviceid : 0x78 0x79)
 889  * controllers
 890  */
 891
 892 /**
 893  * megasas_enable_intr_gen2 -  Enables interrupts
 894  * @instance:   Adapter soft state
 895  */
 896 static inline void
 897 megasas_enable_intr_gen2(struct megasas_instance *instance)
 898 {
 899         struct megasas_register_set __iomem *regs;
 900
 901         regs = instance->reg_set;
 902         writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
 903
 904         /* write ~0x00000005 (4 & 1) to the intr mask*/
 905         writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
 906
 907         /* Dummy readl to force pci flush */
 908         readl(&regs->outbound_intr_mask);
 909 }
 910
 911 /**
 912  * megasas_disable_intr_gen2 - Disables interrupt
 913  * @instance:   Adapter soft state
 914  */
 915 static inline void
 916 megasas_disable_intr_gen2(struct megasas_instance *instance)
 917 {
 918         struct megasas_register_set __iomem *regs;
 919         u32 mask = 0xFFFFFFFF;
 920
 921         regs = instance->reg_set;
 922         writel(mask, &regs->outbound_intr_mask);
 923         /* Dummy readl to force pci flush */
 924         readl(&regs->outbound_intr_mask);
 925 }
 926
 927 /**
 928  * megasas_read_fw_status_reg_gen2 - returns the current FW status value
 929  * @instance:   Adapter soft state
 930  */
 931 static u32
 932 megasas_read_fw_status_reg_gen2(struct megasas_instance *instance)
 933 {
 934         return readl(&instance->reg_set->outbound_scratch_pad_0);
 935 }
 936
 937 /**
 938  * megasas_clear_interrupt_gen2 -      Check & clear interrupt
 939  * @instance:   Adapter soft state
 940  */
 941 static int
 942 megasas_clear_intr_gen2(struct megasas_instance *instance)
 943 {
 944         u32 status;
 945         u32 mfiStatus = 0;
 946         struct megasas_register_set __iomem *regs;
 947         regs = instance->reg_set;
 948
 949         /*
 950          * Check if it is our interrupt
 951          */
 952         status = readl(&regs->outbound_intr_status);
 953
 954         if (status & MFI_INTR_FLAG_REPLY_MESSAGE) {
 955                 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
 956         }
 957         if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) {
 958                 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
 959         }
 960
 961         /*
 962          * Clear the interrupt by writing back the same value
 963          */
 964         if (mfiStatus)
 965                 writel(status, &regs->outbound_doorbell_clear);
 966
 967         /* Dummy readl to force pci flush */
 968         readl(&regs->outbound_intr_status);
 969
 970         return mfiStatus;
 971 }
 972
 973 /**
 974  * megasas_fire_cmd_gen2 -     Sends command to the FW
 975  * @instance:           Adapter soft state
 976  * @frame_phys_addr:    Physical address of cmd
 977  * @frame_count:        Number of frames for the command
 978  * @regs:               MFI register set
 979  */
 980 static inline void
 981 megasas_fire_cmd_gen2(struct megasas_instance *instance,
 982                         dma_addr_t frame_phys_addr,
 983                         u32 frame_count,
 984                         struct megasas_register_set __iomem *regs)
 985 {
 986         unsigned long flags;
 987
 988         spin_lock_irqsave(&instance->hba_lock, flags);
 989         writel((frame_phys_addr | (frame_count<<1))|1,
 990                         &(regs)->inbound_queue_port);
 991         spin_unlock_irqrestore(&instance->hba_lock, flags);
 992 }
 993
 994 /**
 995  * megasas_adp_reset_gen2 -     For controller reset
 996  * @instance:   Adapter soft state
 997  * @reg_set:    MFI register set
 998  */
 999 static int
1000 megasas_adp_reset_gen2(struct megasas_instance *instance,
1001                         struct megasas_register_set __iomem *reg_set)
1002 {
1003         u32 retry = 0 ;
1004         u32 HostDiag;
1005         u32 __iomem *seq_offset = &reg_set->seq_offset;
1006         u32 __iomem *hostdiag_offset = &reg_set->host_diag;
1007
1008         if (instance->instancet == &megasas_instance_template_skinny) {
1009                 seq_offset = &reg_set->fusion_seq_offset;
1010                 hostdiag_offset = &reg_set->fusion_host_diag;
1011         }
1012
1013         writel(0, seq_offset);
1014         writel(4, seq_offset);
1015         writel(0xb, seq_offset);
1016         writel(2, seq_offset);
1017         writel(7, seq_offset);
1018         writel(0xd, seq_offset);
1019
1020         msleep(1000);
1021
1022         HostDiag = (u32)readl(hostdiag_offset);
1023
1024         while (!(HostDiag & DIAG_WRITE_ENABLE)) {
1025                 msleep(100);
1026                 HostDiag = (u32)readl(hostdiag_offset);
1027                 dev_notice(&instance->pdev->dev, "RESETGEN2: retry=%x, hostdiag=%x\n",
1028                                         retry, HostDiag);
1029
1030                 if (retry++ >= 100)
1031                         return 1;
1032
1033         }
1034
1035         dev_notice(&instance->pdev->dev, "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag);
1036
1037         writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset);
1038
1039         ssleep(10);
1040
1041         HostDiag = (u32)readl(hostdiag_offset);
1042         while (HostDiag & DIAG_RESET_ADAPTER) {
1043                 msleep(100);
1044                 HostDiag = (u32)readl(hostdiag_offset);
1045                 dev_notice(&instance->pdev->dev, "RESET_GEN2: retry=%x, hostdiag=%x\n",
1046                                 retry, HostDiag);
1047
1048                 if (retry++ >= 1000)
1049                         return 1;
1050
1051         }
1052         return 0;
1053 }
1054
1055 /**
1056  * megasas_check_reset_gen2 -   For controller reset check
1057  * @instance:   Adapter soft state
1058  * @regs:       MFI register set
1059  */
1060 static int
1061 megasas_check_reset_gen2(struct megasas_instance *instance,
1062                 struct megasas_register_set __iomem *regs)
1063 {
1064         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
1065                 return 1;
1066
1067         return 0;
1068 }
1069
1070 static struct megasas_instance_template megasas_instance_template_gen2 = {
1071
1072         .fire_cmd = megasas_fire_cmd_gen2,
1073         .enable_intr = megasas_enable_intr_gen2,
1074         .disable_intr = megasas_disable_intr_gen2,
1075         .clear_intr = megasas_clear_intr_gen2,
1076         .read_fw_status_reg = megasas_read_fw_status_reg_gen2,
1077         .adp_reset = megasas_adp_reset_gen2,
1078         .check_reset = megasas_check_reset_gen2,
1079         .service_isr = megasas_isr,
1080         .tasklet = megasas_complete_cmd_dpc,
1081         .init_adapter = megasas_init_adapter_mfi,
1082         .build_and_issue_cmd = megasas_build_and_issue_cmd,
1083         .issue_dcmd = megasas_issue_dcmd,
1084 };
1085
1086 /*
1087  * This is the end of set of functions & definitions
1088  * specific to gen2 (deviceid : 0x78, 0x79) controllers
1089  */
1090
1091 /*
1092  * Template added for TB (Fusion)
1093  */
1094 extern struct megasas_instance_template megasas_instance_template_fusion;
1095
1096 /**
1097  * megasas_issue_polled -       Issues a polling command
1098  * @instance:                   Adapter soft state
1099  * @cmd:                        Command packet to be issued
1100  *
1101  * For polling, MFI requires the cmd_status to be set to MFI_STAT_INVALID_STATUS before posting.
1102  */
1103 int
1104 megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
1105 {
1106         struct megasas_header *frame_hdr = &cmd->frame->hdr;
1107
1108         frame_hdr->cmd_status = MFI_STAT_INVALID_STATUS;
1109         frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
1110
1111         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1112                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1113                         __func__, __LINE__);
1114                 return DCMD_INIT;
1115         }
1116
1117         instance->instancet->issue_dcmd(instance, cmd);
1118
1119         return wait_and_poll(instance, cmd, instance->requestorId ?
1120                         MEGASAS_ROUTINE_WAIT_TIME_VF : MFI_IO_TIMEOUT_SECS);
1121 }
1122
1123 /**
1124  * megasas_issue_blocked_cmd -  Synchronous wrapper around regular FW cmds
1125  * @instance:                   Adapter soft state
1126  * @cmd:                        Command to be issued
1127  * @timeout:                    Timeout in seconds
1128  *
1129  * This function waits on an event for the command to be returned from ISR.
1130  * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1131  * Used to issue ioctl commands.
1132  */
1133 int
1134 megasas_issue_blocked_cmd(struct megasas_instance *instance,
1135                           struct megasas_cmd *cmd, int timeout)
1136 {
1137         int ret = 0;
1138         cmd->cmd_status_drv = DCMD_INIT;
1139
1140         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1141                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1142                         __func__, __LINE__);
1143                 return DCMD_INIT;
1144         }
1145
1146         instance->instancet->issue_dcmd(instance, cmd);
1147
1148         if (timeout) {
1149                 ret = wait_event_timeout(instance->int_cmd_wait_q,
1150                 cmd->cmd_status_drv != DCMD_INIT, timeout * HZ);
1151                 if (!ret) {
1152                         dev_err(&instance->pdev->dev,
1153                                 "DCMD(opcode: 0x%x) is timed out, func:%s\n",
1154                                 cmd->frame->dcmd.opcode, __func__);
1155                         return DCMD_TIMEOUT;
1156                 }
1157         } else
1158                 wait_event(instance->int_cmd_wait_q,
1159                                 cmd->cmd_status_drv != DCMD_INIT);
1160
1161         return cmd->cmd_status_drv;
1162 }
1163
1164 /**
1165  * megasas_issue_blocked_abort_cmd -    Aborts previously issued cmd
1166  * @instance:                           Adapter soft state
1167  * @cmd_to_abort:                       Previously issued cmd to be aborted
1168  * @timeout:                            Timeout in seconds
1169  *
1170  * MFI firmware can abort previously issued AEN comamnd (automatic event
1171  * notification). The megasas_issue_blocked_abort_cmd() issues such abort
1172  * cmd and waits for return status.
1173  * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1174  */
1175 static int
1176 megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
1177                                 struct megasas_cmd *cmd_to_abort, int timeout)
1178 {
1179         struct megasas_cmd *cmd;
1180         struct megasas_abort_frame *abort_fr;
1181         int ret = 0;
1182         u32 opcode;
1183
1184         cmd = megasas_get_cmd(instance);
1185
1186         if (!cmd)
1187                 return -1;
1188
1189         abort_fr = &cmd->frame->abort;
1190
1191         /*
1192          * Prepare and issue the abort frame
1193          */
1194         abort_fr->cmd = MFI_CMD_ABORT;
1195         abort_fr->cmd_status = MFI_STAT_INVALID_STATUS;
1196         abort_fr->flags = cpu_to_le16(0);
1197         abort_fr->abort_context = cpu_to_le32(cmd_to_abort->index);
1198         abort_fr->abort_mfi_phys_addr_lo =
1199                 cpu_to_le32(lower_32_bits(cmd_to_abort->frame_phys_addr));
1200         abort_fr->abort_mfi_phys_addr_hi =
1201                 cpu_to_le32(upper_32_bits(cmd_to_abort->frame_phys_addr));
1202
1203         cmd->sync_cmd = 1;
1204         cmd->cmd_status_drv = DCMD_INIT;
1205
1206         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1207                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1208                         __func__, __LINE__);
1209                 return DCMD_INIT;
1210         }
1211
1212         instance->instancet->issue_dcmd(instance, cmd);
1213
1214         if (timeout) {
1215                 ret = wait_event_timeout(instance->abort_cmd_wait_q,
1216                 cmd->cmd_status_drv != DCMD_INIT, timeout * HZ);
1217                 if (!ret) {
1218                         opcode = cmd_to_abort->frame->dcmd.opcode;
1219                         dev_err(&instance->pdev->dev,
1220                                 "Abort(to be aborted DCMD opcode: 0x%x) is timed out func:%s\n",
1221                                 opcode,  __func__);
1222                         return DCMD_TIMEOUT;
1223                 }
1224         } else
1225                 wait_event(instance->abort_cmd_wait_q,
1226                 cmd->cmd_status_drv != DCMD_INIT);
1227
1228         cmd->sync_cmd = 0;
1229
1230         megasas_return_cmd(instance, cmd);
1231         return cmd->cmd_status_drv;
1232 }
1233
1234 /**
1235  * megasas_make_sgl32 - Prepares 32-bit SGL
1236  * @instance:           Adapter soft state
1237  * @scp:                SCSI command from the mid-layer
1238  * @mfi_sgl:            SGL to be filled in
1239  *
1240  * If successful, this function returns the number of SG elements. Otherwise,
1241  * it returnes -1.
1242  */
1243 static int
1244 megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp,
1245                    union megasas_sgl *mfi_sgl)
1246 {
1247         int i;
1248         int sge_count;
1249         struct scatterlist *os_sgl;
1250
1251         sge_count = scsi_dma_map(scp);
1252         BUG_ON(sge_count < 0);
1253
1254         if (sge_count) {
1255                 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1256                         mfi_sgl->sge32[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1257                         mfi_sgl->sge32[i].phys_addr = cpu_to_le32(sg_dma_address(os_sgl));
1258                 }
1259         }
1260         return sge_count;
1261 }
1262
1263 /**
1264  * megasas_make_sgl64 - Prepares 64-bit SGL
1265  * @instance:           Adapter soft state
1266  * @scp:                SCSI command from the mid-layer
1267  * @mfi_sgl:            SGL to be filled in
1268  *
1269  * If successful, this function returns the number of SG elements. Otherwise,
1270  * it returnes -1.
1271  */
1272 static int
1273 megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp,
1274                    union megasas_sgl *mfi_sgl)
1275 {
1276         int i;
1277         int sge_count;
1278         struct scatterlist *os_sgl;
1279
1280         sge_count = scsi_dma_map(scp);
1281         BUG_ON(sge_count < 0);
1282
1283         if (sge_count) {
1284                 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1285                         mfi_sgl->sge64[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1286                         mfi_sgl->sge64[i].phys_addr = cpu_to_le64(sg_dma_address(os_sgl));
1287                 }
1288         }
1289         return sge_count;
1290 }
1291
1292 /**
1293  * megasas_make_sgl_skinny - Prepares IEEE SGL
1294  * @instance:           Adapter soft state
1295  * @scp:                SCSI command from the mid-layer
1296  * @mfi_sgl:            SGL to be filled in
1297  *
1298  * If successful, this function returns the number of SG elements. Otherwise,
1299  * it returnes -1.
1300  */
1301 static int
1302 megasas_make_sgl_skinny(struct megasas_instance *instance,
1303                 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)
1304 {
1305         int i;
1306         int sge_count;
1307         struct scatterlist *os_sgl;
1308
1309         sge_count = scsi_dma_map(scp);
1310
1311         if (sge_count) {
1312                 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1313                         mfi_sgl->sge_skinny[i].length =
1314                                 cpu_to_le32(sg_dma_len(os_sgl));
1315                         mfi_sgl->sge_skinny[i].phys_addr =
1316                                 cpu_to_le64(sg_dma_address(os_sgl));
1317                         mfi_sgl->sge_skinny[i].flag = cpu_to_le32(0);
1318                 }
1319         }
1320         return sge_count;
1321 }
1322
1323  /**
1324  * megasas_get_frame_count - Computes the number of frames
1325  * @frame_type          : type of frame- io or pthru frame
1326  * @sge_count           : number of sg elements
1327  *
1328  * Returns the number of frames required for numnber of sge's (sge_count)
1329  */
1330
1331 static u32 megasas_get_frame_count(struct megasas_instance *instance,
1332                         u8 sge_count, u8 frame_type)
1333 {
1334         int num_cnt;
1335         int sge_bytes;
1336         u32 sge_sz;
1337         u32 frame_count = 0;
1338
1339         sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
1340             sizeof(struct megasas_sge32);
1341
1342         if (instance->flag_ieee) {
1343                 sge_sz = sizeof(struct megasas_sge_skinny);
1344         }
1345
1346         /*
1347          * Main frame can contain 2 SGEs for 64-bit SGLs and
1348          * 3 SGEs for 32-bit SGLs for ldio &
1349          * 1 SGEs for 64-bit SGLs and
1350          * 2 SGEs for 32-bit SGLs for pthru frame
1351          */
1352         if (unlikely(frame_type == PTHRU_FRAME)) {
1353                 if (instance->flag_ieee == 1) {
1354                         num_cnt = sge_count - 1;
1355                 } else if (IS_DMA64)
1356                         num_cnt = sge_count - 1;
1357                 else
1358                         num_cnt = sge_count - 2;
1359         } else {
1360                 if (instance->flag_ieee == 1) {
1361                         num_cnt = sge_count - 1;
1362                 } else if (IS_DMA64)
1363                         num_cnt = sge_count - 2;
1364                 else
1365                         num_cnt = sge_count - 3;
1366         }
1367
1368         if (num_cnt > 0) {
1369                 sge_bytes = sge_sz * num_cnt;
1370
1371                 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
1372                     ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ;
1373         }
1374         /* Main frame */
1375         frame_count += 1;
1376
1377         if (frame_count > 7)
1378                 frame_count = 8;
1379         return frame_count;
1380 }
1381
1382 /**
1383  * megasas_build_dcdb - Prepares a direct cdb (DCDB) command
1384  * @instance:           Adapter soft state
1385  * @scp:                SCSI command
1386  * @cmd:                Command to be prepared in
1387  *
1388  * This function prepares CDB commands. These are typcially pass-through
1389  * commands to the devices.
1390  */
1391 static int
1392 megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
1393                    struct megasas_cmd *cmd)
1394 {
1395         u32 is_logical;
1396         u32 device_id;
1397         u16 flags = 0;
1398         struct megasas_pthru_frame *pthru;
1399
1400         is_logical = MEGASAS_IS_LOGICAL(scp->device);
1401         device_id = MEGASAS_DEV_INDEX(scp);
1402         pthru = (struct megasas_pthru_frame *)cmd->frame;
1403
1404         if (scp->sc_data_direction == DMA_TO_DEVICE)
1405                 flags = MFI_FRAME_DIR_WRITE;
1406         else if (scp->sc_data_direction == DMA_FROM_DEVICE)
1407                 flags = MFI_FRAME_DIR_READ;
1408         else if (scp->sc_data_direction == DMA_NONE)
1409                 flags = MFI_FRAME_DIR_NONE;
1410
1411         if (instance->flag_ieee == 1) {
1412                 flags |= MFI_FRAME_IEEE;
1413         }
1414
1415         /*
1416          * Prepare the DCDB frame
1417          */
1418         pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO;
1419         pthru->cmd_status = 0x0;
1420         pthru->scsi_status = 0x0;
1421         pthru->target_id = device_id;
1422         pthru->lun = scp->device->lun;
1423         pthru->cdb_len = scp->cmd_len;
1424         pthru->timeout = 0;
1425         pthru->pad_0 = 0;
1426         pthru->flags = cpu_to_le16(flags);
1427         pthru->data_xfer_len = cpu_to_le32(scsi_bufflen(scp));
1428
1429         memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
1430
1431         /*
1432          * If the command is for the tape device, set the
1433          * pthru timeout to the os layer timeout value.
1434          */
1435         if (scp->device->type == TYPE_TAPE) {
1436                 if ((scp->request->timeout / HZ) > 0xFFFF)
1437                         pthru->timeout = cpu_to_le16(0xFFFF);
1438                 else
1439                         pthru->timeout = cpu_to_le16(scp->request->timeout / HZ);
1440         }
1441
1442         /*
1443          * Construct SGL
1444          */
1445         if (instance->flag_ieee == 1) {
1446                 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1447                 pthru->sge_count = megasas_make_sgl_skinny(instance, scp,
1448                                                       &pthru->sgl);
1449         } else if (IS_DMA64) {
1450                 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1451                 pthru->sge_count = megasas_make_sgl64(instance, scp,
1452                                                       &pthru->sgl);
1453         } else
1454                 pthru->sge_count = megasas_make_sgl32(instance, scp,
1455                                                       &pthru->sgl);
1456
1457         if (pthru->sge_count > instance->max_num_sge) {
1458                 dev_err(&instance->pdev->dev, "DCDB too many SGE NUM=%x\n",
1459                         pthru->sge_count);
1460                 return 0;
1461         }
1462
1463         /*
1464          * Sense info specific
1465          */
1466         pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
1467         pthru->sense_buf_phys_addr_hi =
1468                 cpu_to_le32(upper_32_bits(cmd->sense_phys_addr));
1469         pthru->sense_buf_phys_addr_lo =
1470                 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
1471
1472         /*
1473          * Compute the total number of frames this command consumes. FW uses
1474          * this number to pull sufficient number of frames from host memory.
1475          */
1476         cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count,
1477                                                         PTHRU_FRAME);
1478
1479         return cmd->frame_count;
1480 }
1481
1482 /**
1483  * megasas_build_ldio - Prepares IOs to logical devices
1484  * @instance:           Adapter soft state
1485  * @scp:                SCSI command
1486  * @cmd:                Command to be prepared
1487  *
1488  * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
1489  */
1490 static int
1491 megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
1492                    struct megasas_cmd *cmd)
1493 {
1494         u32 device_id;
1495         u8 sc = scp->cmnd[0];
1496         u16 flags = 0;
1497         struct megasas_io_frame *ldio;
1498
1499         device_id = MEGASAS_DEV_INDEX(scp);
1500         ldio = (struct megasas_io_frame *)cmd->frame;
1501
1502         if (scp->sc_data_direction == DMA_TO_DEVICE)
1503                 flags = MFI_FRAME_DIR_WRITE;
1504         else if (scp->sc_data_direction == DMA_FROM_DEVICE)
1505                 flags = MFI_FRAME_DIR_READ;
1506
1507         if (instance->flag_ieee == 1) {
1508                 flags |= MFI_FRAME_IEEE;
1509         }
1510
1511         /*
1512          * Prepare the Logical IO frame: 2nd bit is zero for all read cmds
1513          */
1514         ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ;
1515         ldio->cmd_status = 0x0;
1516         ldio->scsi_status = 0x0;
1517         ldio->target_id = device_id;
1518         ldio->timeout = 0;
1519         ldio->reserved_0 = 0;
1520         ldio->pad_0 = 0;
1521         ldio->flags = cpu_to_le16(flags);
1522         ldio->start_lba_hi = 0;
1523         ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;
1524
1525         /*
1526          * 6-byte READ(0x08) or WRITE(0x0A) cdb
1527          */
1528         if (scp->cmd_len == 6) {
1529                 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[4]);
1530                 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[1] << 16) |
1531                                                  ((u32) scp->cmnd[2] << 8) |
1532                                                  (u32) scp->cmnd[3]);
1533
1534                 ldio->start_lba_lo &= cpu_to_le32(0x1FFFFF);
1535         }
1536
1537         /*
1538          * 10-byte READ(0x28) or WRITE(0x2A) cdb
1539          */
1540         else if (scp->cmd_len == 10) {
1541                 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[8] |
1542                                               ((u32) scp->cmnd[7] << 8));
1543                 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1544                                                  ((u32) scp->cmnd[3] << 16) |
1545                                                  ((u32) scp->cmnd[4] << 8) |
1546                                                  (u32) scp->cmnd[5]);
1547         }
1548
1549         /*
1550          * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1551          */
1552         else if (scp->cmd_len == 12) {
1553                 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1554                                               ((u32) scp->cmnd[7] << 16) |
1555                                               ((u32) scp->cmnd[8] << 8) |
1556                                               (u32) scp->cmnd[9]);
1557
1558                 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1559                                                  ((u32) scp->cmnd[3] << 16) |
1560                                                  ((u32) scp->cmnd[4] << 8) |
1561                                                  (u32) scp->cmnd[5]);
1562         }
1563
1564         /*
1565          * 16-byte READ(0x88) or WRITE(0x8A) cdb
1566          */
1567         else if (scp->cmd_len == 16) {
1568                 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[10] << 24) |
1569                                               ((u32) scp->cmnd[11] << 16) |
1570                                               ((u32) scp->cmnd[12] << 8) |
1571                                               (u32) scp->cmnd[13]);
1572
1573                 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1574                                                  ((u32) scp->cmnd[7] << 16) |
1575                                                  ((u32) scp->cmnd[8] << 8) |
1576                                                  (u32) scp->cmnd[9]);
1577
1578                 ldio->start_lba_hi = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1579                                                  ((u32) scp->cmnd[3] << 16) |
1580                                                  ((u32) scp->cmnd[4] << 8) |
1581                                                  (u32) scp->cmnd[5]);
1582
1583         }
1584
1585         /*
1586          * Construct SGL
1587          */
1588         if (instance->flag_ieee) {
1589                 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1590                 ldio->sge_count = megasas_make_sgl_skinny(instance, scp,
1591                                               &ldio->sgl);
1592         } else if (IS_DMA64) {
1593                 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1594                 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl);
1595         } else
1596                 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl);
1597
1598         if (ldio->sge_count > instance->max_num_sge) {
1599                 dev_err(&instance->pdev->dev, "build_ld_io: sge_count = %x\n",
1600                         ldio->sge_count);
1601                 return 0;
1602         }
1603
1604         /*
1605          * Sense info specific
1606          */
1607         ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
1608         ldio->sense_buf_phys_addr_hi = 0;
1609         ldio->sense_buf_phys_addr_lo = cpu_to_le32(cmd->sense_phys_addr);
1610
1611         /*
1612          * Compute the total number of frames this command consumes. FW uses
1613          * this number to pull sufficient number of frames from host memory.
1614          */
1615         cmd->frame_count = megasas_get_frame_count(instance,
1616                         ldio->sge_count, IO_FRAME);
1617
1618         return cmd->frame_count;
1619 }
1620
1621 /**
1622  * megasas_cmd_type -           Checks if the cmd is for logical drive/sysPD
1623  *                              and whether it's RW or non RW
1624  * @cmd:                        SCSI command
1625  *
1626  */
1627 inline int megasas_cmd_type(struct scsi_cmnd *cmd)
1628 {
1629         int ret;
1630
1631         switch (cmd->cmnd[0]) {
1632         case READ_10:
1633         case WRITE_10:
1634         case READ_12:
1635         case WRITE_12:
1636         case READ_6:
1637         case WRITE_6:
1638         case READ_16:
1639         case WRITE_16:
1640                 ret = (MEGASAS_IS_LOGICAL(cmd->device)) ?
1641                         READ_WRITE_LDIO : READ_WRITE_SYSPDIO;
1642                 break;
1643         default:
1644                 ret = (MEGASAS_IS_LOGICAL(cmd->device)) ?
1645                         NON_READ_WRITE_LDIO : NON_READ_WRITE_SYSPDIO;
1646         }
1647         return ret;
1648 }
1649
1650  /**
1651  * megasas_dump_pending_frames -        Dumps the frame address of all pending cmds
1652  *                                      in FW
1653  * @instance:                           Adapter soft state
1654  */
1655 static inline void
1656 megasas_dump_pending_frames(struct megasas_instance *instance)
1657 {
1658         struct megasas_cmd *cmd;
1659         int i,n;
1660         union megasas_sgl *mfi_sgl;
1661         struct megasas_io_frame *ldio;
1662         struct megasas_pthru_frame *pthru;
1663         u32 sgcount;
1664         u16 max_cmd = instance->max_fw_cmds;
1665
1666         dev_err(&instance->pdev->dev, "[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no);
1667         dev_err(&instance->pdev->dev, "[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding));
1668         if (IS_DMA64)
1669                 dev_err(&instance->pdev->dev, "[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no);
1670         else
1671                 dev_err(&instance->pdev->dev, "[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no);
1672
1673         dev_err(&instance->pdev->dev, "[%d]: Pending OS cmds in FW : \n",instance->host->host_no);
1674         for (i = 0; i < max_cmd; i++) {
1675                 cmd = instance->cmd_list[i];
1676                 if (!cmd->scmd)
1677                         continue;
1678                 dev_err(&instance->pdev->dev, "[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr);
1679                 if (megasas_cmd_type(cmd->scmd) == READ_WRITE_LDIO) {
1680                         ldio = (struct megasas_io_frame *)cmd->frame;
1681                         mfi_sgl = &ldio->sgl;
1682                         sgcount = ldio->sge_count;
1683                         dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x,"
1684                         " lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1685                         instance->host->host_no, cmd->frame_count, ldio->cmd, ldio->target_id,
1686                         le32_to_cpu(ldio->start_lba_lo), le32_to_cpu(ldio->start_lba_hi),
1687                         le32_to_cpu(ldio->sense_buf_phys_addr_lo), sgcount);
1688                 } else {
1689                         pthru = (struct megasas_pthru_frame *) cmd->frame;
1690                         mfi_sgl = &pthru->sgl;
1691                         sgcount = pthru->sge_count;
1692                         dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, "
1693                         "lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1694                         instance->host->host_no, cmd->frame_count, pthru->cmd, pthru->target_id,
1695                         pthru->lun, pthru->cdb_len, le32_to_cpu(pthru->data_xfer_len),
1696                         le32_to_cpu(pthru->sense_buf_phys_addr_lo), sgcount);
1697                 }
1698                 if (megasas_dbg_lvl & MEGASAS_DBG_LVL) {
1699                         for (n = 0; n < sgcount; n++) {
1700                                 if (IS_DMA64)
1701                                         dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%llx\n",
1702                                                 le32_to_cpu(mfi_sgl->sge64[n].length),
1703                                                 le64_to_cpu(mfi_sgl->sge64[n].phys_addr));
1704                                 else
1705                                         dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%x\n",
1706                                                 le32_to_cpu(mfi_sgl->sge32[n].length),
1707                                                 le32_to_cpu(mfi_sgl->sge32[n].phys_addr));
1708                         }
1709                 }
1710         } /*for max_cmd*/
1711         dev_err(&instance->pdev->dev, "[%d]: Pending Internal cmds in FW : \n",instance->host->host_no);
1712         for (i = 0; i < max_cmd; i++) {
1713
1714                 cmd = instance->cmd_list[i];
1715
1716                 if (cmd->sync_cmd == 1)
1717                         dev_err(&instance->pdev->dev, "0x%08lx : ", (unsigned long)cmd->frame_phys_addr);
1718         }
1719         dev_err(&instance->pdev->dev, "[%d]: Dumping Done\n\n",instance->host->host_no);
1720 }
1721
1722 u32
1723 megasas_build_and_issue_cmd(struct megasas_instance *instance,
1724                             struct scsi_cmnd *scmd)
1725 {
1726         struct megasas_cmd *cmd;
1727         u32 frame_count;
1728
1729         cmd = megasas_get_cmd(instance);
1730         if (!cmd)
1731                 return SCSI_MLQUEUE_HOST_BUSY;
1732
1733         /*
1734          * Logical drive command
1735          */
1736         if (megasas_cmd_type(scmd) == READ_WRITE_LDIO)
1737                 frame_count = megasas_build_ldio(instance, scmd, cmd);
1738         else
1739                 frame_count = megasas_build_dcdb(instance, scmd, cmd);
1740
1741         if (!frame_count)
1742                 goto out_return_cmd;
1743
1744         cmd->scmd = scmd;
1745         scmd->SCp.ptr = (char *)cmd;
1746
1747         /*
1748          * Issue the command to the FW
1749          */
1750         atomic_inc(&instance->fw_outstanding);
1751
1752         instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
1753                                 cmd->frame_count-1, instance->reg_set);
1754
1755         return 0;
1756 out_return_cmd:
1757         megasas_return_cmd(instance, cmd);
1758         return SCSI_MLQUEUE_HOST_BUSY;
1759 }
1760
1761
1762 /**
1763  * megasas_queue_command -      Queue entry point
1764  * @shost:                      adapter SCSI host
1765  * @scmd:                       SCSI command to be queued
1766  */
1767 static int
1768 megasas_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
1769 {
1770         struct megasas_instance *instance;
1771         struct MR_PRIV_DEVICE *mr_device_priv_data;
1772
1773         instance = (struct megasas_instance *)
1774             scmd->device->host->hostdata;
1775
1776         if (instance->unload == 1) {
1777                 scmd->result = DID_NO_CONNECT << 16;
1778                 scmd->scsi_done(scmd);
1779                 return 0;
1780         }
1781
1782         if (instance->issuepend_done == 0)
1783                 return SCSI_MLQUEUE_HOST_BUSY;
1784
1785
1786         /* Check for an mpio path and adjust behavior */
1787         if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
1788                 if (megasas_check_mpio_paths(instance, scmd) ==
1789                     (DID_REQUEUE << 16)) {
1790                         return SCSI_MLQUEUE_HOST_BUSY;
1791                 } else {
1792                         scmd->result = DID_NO_CONNECT << 16;
1793                         scmd->scsi_done(scmd);
1794                         return 0;
1795                 }
1796         }
1797
1798         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1799                 scmd->result = DID_NO_CONNECT << 16;
1800                 scmd->scsi_done(scmd);
1801                 return 0;
1802         }
1803
1804         mr_device_priv_data = scmd->device->hostdata;
1805         if (!mr_device_priv_data) {
1806                 scmd->result = DID_NO_CONNECT << 16;
1807                 scmd->scsi_done(scmd);
1808                 return 0;
1809         }
1810
1811         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
1812                 return SCSI_MLQUEUE_HOST_BUSY;
1813
1814         if (mr_device_priv_data->tm_busy)
1815                 return SCSI_MLQUEUE_DEVICE_BUSY;
1816
1817
1818         scmd->result = 0;
1819
1820         if (MEGASAS_IS_LOGICAL(scmd->device) &&
1821             (scmd->device->id >= instance->fw_supported_vd_count ||
1822                 scmd->device->lun)) {
1823                 scmd->result = DID_BAD_TARGET << 16;
1824                 goto out_done;
1825         }
1826
1827         if ((scmd->cmnd[0] == SYNCHRONIZE_CACHE) &&
1828             MEGASAS_IS_LOGICAL(scmd->device) &&
1829             (!instance->fw_sync_cache_support)) {
1830                 scmd->result = DID_OK << 16;
1831                 goto out_done;
1832         }
1833
1834         return instance->instancet->build_and_issue_cmd(instance, scmd);
1835
1836  out_done:
1837         scmd->scsi_done(scmd);
1838         return 0;
1839 }
1840
1841 static struct megasas_instance *megasas_lookup_instance(u16 host_no)
1842 {
1843         int i;
1844
1845         for (i = 0; i < megasas_mgmt_info.max_index; i++) {
1846
1847                 if ((megasas_mgmt_info.instance[i]) &&
1848                     (megasas_mgmt_info.instance[i]->host->host_no == host_no))
1849                         return megasas_mgmt_info.instance[i];
1850         }
1851
1852         return NULL;
1853 }
1854
1855 /*
1856 * megasas_set_dynamic_target_properties -
1857 * Device property set by driver may not be static and it is required to be
1858 * updated after OCR
1859 *
1860 * set tm_capable.
1861 * set dma alignment (only for eedp protection enable vd).
1862 *
1863 * @sdev: OS provided scsi device
1864 *
1865 * Returns void
1866 */
1867 void megasas_set_dynamic_target_properties(struct scsi_device *sdev,
1868                                            bool is_target_prop)
1869 {
1870         u16 pd_index = 0, ld;
1871         u32 device_id;
1872         struct megasas_instance *instance;
1873         struct fusion_context *fusion;
1874         struct MR_PRIV_DEVICE *mr_device_priv_data;
1875         struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
1876         struct MR_LD_RAID *raid;
1877         struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
1878
1879         instance = megasas_lookup_instance(sdev->host->host_no);
1880         fusion = instance->ctrl_context;
1881         mr_device_priv_data = sdev->hostdata;
1882
1883         if (!fusion || !mr_device_priv_data)
1884                 return;
1885
1886         if (MEGASAS_IS_LOGICAL(sdev)) {
1887                 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL)
1888                                         + sdev->id;
1889                 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
1890                 ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
1891                 if (ld >= instance->fw_supported_vd_count)
1892                         return;
1893                 raid = MR_LdRaidGet(ld, local_map_ptr);
1894
1895                 if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER)
1896                 blk_queue_update_dma_alignment(sdev->request_queue, 0x7);
1897
1898                 mr_device_priv_data->is_tm_capable =
1899                         raid->capability.tmCapable;
1900
1901                 if (!raid->flags.isEPD)
1902                         sdev->no_write_same = 1;
1903
1904         } else if (instance->use_seqnum_jbod_fp) {
1905                 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1906                         sdev->id;
1907                 pd_sync = (void *)fusion->pd_seq_sync
1908                                 [(instance->pd_seq_map_id - 1) & 1];
1909                 mr_device_priv_data->is_tm_capable =
1910                         pd_sync->seq[pd_index].capability.tmCapable;
1911         }
1912
1913         if (is_target_prop && instance->tgt_prop->reset_tmo) {
1914                 /*
1915                  * If FW provides a target reset timeout value, driver will use
1916                  * it. If not set, fallback to default values.
1917                  */
1918                 mr_device_priv_data->target_reset_tmo =
1919                         min_t(u8, instance->max_reset_tmo,
1920                               instance->tgt_prop->reset_tmo);
1921                 mr_device_priv_data->task_abort_tmo = instance->task_abort_tmo;
1922         } else {
1923                 mr_device_priv_data->target_reset_tmo =
1924                                                 MEGASAS_DEFAULT_TM_TIMEOUT;
1925                 mr_device_priv_data->task_abort_tmo =
1926                                                 MEGASAS_DEFAULT_TM_TIMEOUT;
1927         }
1928 }
1929
1930 /*
1931  * megasas_set_nvme_device_properties -
1932  * set nomerges=2
1933  * set virtual page boundary = 4K (current mr_nvme_pg_size is 4K).
1934  * set maximum io transfer = MDTS of NVME device provided by MR firmware.
1935  *
1936  * MR firmware provides value in KB. Caller of this function converts
1937  * kb into bytes.
1938  *
1939  * e.a MDTS=5 means 2^5 * nvme page size. (In case of 4K page size,
1940  * MR firmware provides value 128 as (32 * 4K) = 128K.
1941  *
1942  * @sdev:                               scsi device
1943  * @max_io_size:                                maximum io transfer size
1944  *
1945  */
1946 static inline void
1947 megasas_set_nvme_device_properties(struct scsi_device *sdev, u32 max_io_size)
1948 {
1949         struct megasas_instance *instance;
1950         u32 mr_nvme_pg_size;
1951
1952         instance = (struct megasas_instance *)sdev->host->hostdata;
1953         mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
1954                                 MR_DEFAULT_NVME_PAGE_SIZE);
1955
1956         blk_queue_max_hw_sectors(sdev->request_queue, (max_io_size / 512));
1957
1958         blk_queue_flag_set(QUEUE_FLAG_NOMERGES, sdev->request_queue);
1959         blk_queue_virt_boundary(sdev->request_queue, mr_nvme_pg_size - 1);
1960 }
1961
1962 /*
1963  * megasas_set_fw_assisted_qd -
1964  * set device queue depth to can_queue
1965  * set device queue depth to fw assisted qd
1966  *
1967  * @sdev:                               scsi device
1968  * @is_target_prop                      true, if fw provided target properties.
1969  */
1970 static void megasas_set_fw_assisted_qd(struct scsi_device *sdev,
1971                                                  bool is_target_prop)
1972 {
1973         u8 interface_type;
1974         u32 device_qd = MEGASAS_DEFAULT_CMD_PER_LUN;
1975         u32 tgt_device_qd;
1976         struct megasas_instance *instance;
1977         struct MR_PRIV_DEVICE *mr_device_priv_data;
1978
1979         instance = megasas_lookup_instance(sdev->host->host_no);
1980         mr_device_priv_data = sdev->hostdata;
1981         interface_type  = mr_device_priv_data->interface_type;
1982
1983         switch (interface_type) {
1984         case SAS_PD:
1985                 device_qd = MEGASAS_SAS_QD;
1986                 break;
1987         case SATA_PD:
1988                 device_qd = MEGASAS_SATA_QD;
1989                 break;
1990         case NVME_PD:
1991                 device_qd = MEGASAS_NVME_QD;
1992                 break;
1993         }
1994
1995         if (is_target_prop) {
1996                 tgt_device_qd = le32_to_cpu(instance->tgt_prop->device_qdepth);
1997                 if (tgt_device_qd)
1998                         device_qd = min(instance->host->can_queue,
1999                                         (int)tgt_device_qd);
2000         }
2001
2002         if (instance->enable_sdev_max_qd && interface_type != UNKNOWN_DRIVE)
2003                 device_qd = instance->host->can_queue;
2004
2005         scsi_change_queue_depth(sdev, device_qd);
2006 }
2007
2008 /*
2009  * megasas_set_static_target_properties -
2010  * Device property set by driver are static and it is not required to be
2011  * updated after OCR.
2012  *
2013  * set io timeout
2014  * set device queue depth
2015  * set nvme device properties. see - megasas_set_nvme_device_properties
2016  *
2017  * @sdev:                               scsi device
2018  * @is_target_prop                      true, if fw provided target properties.
2019  */
2020 static void megasas_set_static_target_properties(struct scsi_device *sdev,
2021                                                  bool is_target_prop)
2022 {
2023         u32 max_io_size_kb = MR_DEFAULT_NVME_MDTS_KB;
2024         struct megasas_instance *instance;
2025
2026         instance = megasas_lookup_instance(sdev->host->host_no);
2027
2028         /*
2029          * The RAID firmware may require extended timeouts.
2030          */
2031         blk_queue_rq_timeout(sdev->request_queue, scmd_timeout * HZ);
2032
2033         /* max_io_size_kb will be set to non zero for
2034          * nvme based vd and syspd.
2035          */
2036         if (is_target_prop)
2037                 max_io_size_kb = le32_to_cpu(instance->tgt_prop->max_io_size_kb);
2038
2039         if (instance->nvme_page_size && max_io_size_kb)
2040                 megasas_set_nvme_device_properties(sdev, (max_io_size_kb << 10));
2041
2042         megasas_set_fw_assisted_qd(sdev, is_target_prop);
2043 }
2044
2045
2046 static int megasas_slave_configure(struct scsi_device *sdev)
2047 {
2048         u16 pd_index = 0;
2049         struct megasas_instance *instance;
2050         int ret_target_prop = DCMD_FAILED;
2051         bool is_target_prop = false;
2052
2053         instance = megasas_lookup_instance(sdev->host->host_no);
2054         if (instance->pd_list_not_supported) {
2055                 if (!MEGASAS_IS_LOGICAL(sdev) && sdev->type == TYPE_DISK) {
2056                         pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
2057                                 sdev->id;
2058                         if (instance->pd_list[pd_index].driveState !=
2059                                 MR_PD_STATE_SYSTEM)
2060                                 return -ENXIO;
2061                 }
2062         }
2063
2064         mutex_lock(&instance->reset_mutex);
2065         /* Send DCMD to Firmware and cache the information */
2066         if ((instance->pd_info) && !MEGASAS_IS_LOGICAL(sdev))
2067                 megasas_get_pd_info(instance, sdev);
2068
2069         /* Some ventura firmware may not have instance->nvme_page_size set.
2070          * Do not send MR_DCMD_DRV_GET_TARGET_PROP
2071          */
2072         if ((instance->tgt_prop) && (instance->nvme_page_size))
2073                 ret_target_prop = megasas_get_target_prop(instance, sdev);
2074
2075         is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
2076         megasas_set_static_target_properties(sdev, is_target_prop);
2077
2078         /* This sdev property may change post OCR */
2079         megasas_set_dynamic_target_properties(sdev, is_target_prop);
2080
2081         mutex_unlock(&instance->reset_mutex);
2082
2083         return 0;
2084 }
2085
2086 static int megasas_slave_alloc(struct scsi_device *sdev)
2087 {
2088         u16 pd_index = 0;
2089         struct megasas_instance *instance ;
2090         struct MR_PRIV_DEVICE *mr_device_priv_data;
2091
2092         instance = megasas_lookup_instance(sdev->host->host_no);
2093         if (!MEGASAS_IS_LOGICAL(sdev)) {
2094                 /*
2095                  * Open the OS scan to the SYSTEM PD
2096                  */
2097                 pd_index =
2098                         (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
2099                         sdev->id;
2100                 if ((instance->pd_list_not_supported ||
2101                         instance->pd_list[pd_index].driveState ==
2102                         MR_PD_STATE_SYSTEM)) {
2103                         goto scan_target;
2104                 }
2105                 return -ENXIO;
2106         }
2107
2108 scan_target:
2109         mr_device_priv_data = kzalloc(sizeof(*mr_device_priv_data),
2110                                         GFP_KERNEL);
2111         if (!mr_device_priv_data)
2112                 return -ENOMEM;
2113         sdev->hostdata = mr_device_priv_data;
2114
2115         atomic_set(&mr_device_priv_data->r1_ldio_hint,
2116                    instance->r1_ldio_hint_default);
2117         return 0;
2118 }
2119
2120 static void megasas_slave_destroy(struct scsi_device *sdev)
2121 {
2122         kfree(sdev->hostdata);
2123         sdev->hostdata = NULL;
2124 }
2125
2126 /*
2127 * megasas_complete_outstanding_ioctls - Complete outstanding ioctls after a
2128 *                                       kill adapter
2129 * @instance:                            Adapter soft state
2130 *
2131 */
2132 static void megasas_complete_outstanding_ioctls(struct megasas_instance *instance)
2133 {
2134         int i;
2135         struct megasas_cmd *cmd_mfi;
2136         struct megasas_cmd_fusion *cmd_fusion;
2137         struct fusion_context *fusion = instance->ctrl_context;
2138
2139         /* Find all outstanding ioctls */
2140         if (fusion) {
2141                 for (i = 0; i < instance->max_fw_cmds; i++) {
2142                         cmd_fusion = fusion->cmd_list[i];
2143                         if (cmd_fusion->sync_cmd_idx != (u32)ULONG_MAX) {
2144                                 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
2145                                 if (cmd_mfi->sync_cmd &&
2146                                     (cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT)) {
2147                                         cmd_mfi->frame->hdr.cmd_status =
2148                                                         MFI_STAT_WRONG_STATE;
2149                                         megasas_complete_cmd(instance,
2150                                                              cmd_mfi, DID_OK);
2151                                 }
2152                         }
2153                 }
2154         } else {
2155                 for (i = 0; i < instance->max_fw_cmds; i++) {
2156                         cmd_mfi = instance->cmd_list[i];
2157                         if (cmd_mfi->sync_cmd && cmd_mfi->frame->hdr.cmd !=
2158                                 MFI_CMD_ABORT)
2159                                 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
2160                 }
2161         }
2162 }
2163
2164
2165 void megaraid_sas_kill_hba(struct megasas_instance *instance)
2166 {
2167         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2168                 dev_warn(&instance->pdev->dev,
2169                          "Adapter already dead, skipping kill HBA\n");
2170                 return;
2171         }
2172
2173         /* Set critical error to block I/O & ioctls in case caller didn't */
2174         atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2175         /* Wait 1 second to ensure IO or ioctls in build have posted */
2176         msleep(1000);
2177         if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2178                 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2179                 (instance->adapter_type != MFI_SERIES)) {
2180                 if (!instance->requestorId) {
2181                         writel(MFI_STOP_ADP, &instance->reg_set->doorbell);
2182                         /* Flush */
2183                         readl(&instance->reg_set->doorbell);
2184                 }
2185                 if (instance->requestorId && instance->peerIsPresent)
2186                         memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
2187         } else {
2188                 writel(MFI_STOP_ADP,
2189                         &instance->reg_set->inbound_doorbell);
2190         }
2191         /* Complete outstanding ioctls when adapter is killed */
2192         megasas_complete_outstanding_ioctls(instance);
2193 }
2194
2195  /**
2196   * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
2197   *                                     restored to max value
2198   * @instance:                  Adapter soft state
2199   *
2200   */
2201 void
2202 megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
2203 {
2204         unsigned long flags;
2205
2206         if (instance->flag & MEGASAS_FW_BUSY
2207             && time_after(jiffies, instance->last_time + 5 * HZ)
2208             && atomic_read(&instance->fw_outstanding) <
2209             instance->throttlequeuedepth + 1) {
2210
2211                 spin_lock_irqsave(instance->host->host_lock, flags);
2212                 instance->flag &= ~MEGASAS_FW_BUSY;
2213
2214                 instance->host->can_queue = instance->cur_can_queue;
2215                 spin_unlock_irqrestore(instance->host->host_lock, flags);
2216         }
2217 }
2218
2219 /**
2220  * megasas_complete_cmd_dpc      -      Returns FW's controller structure
2221  * @instance_addr:                      Address of adapter soft state
2222  *
2223  * Tasklet to complete cmds
2224  */
2225 static void megasas_complete_cmd_dpc(unsigned long instance_addr)
2226 {
2227         u32 producer;
2228         u32 consumer;
2229         u32 context;
2230         struct megasas_cmd *cmd;
2231         struct megasas_instance *instance =
2232                                 (struct megasas_instance *)instance_addr;
2233         unsigned long flags;
2234
2235         /* If we have already declared adapter dead, donot complete cmds */
2236         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
2237                 return;
2238
2239         spin_lock_irqsave(&instance->completion_lock, flags);
2240
2241         producer = le32_to_cpu(*instance->producer);
2242         consumer = le32_to_cpu(*instance->consumer);
2243
2244         while (consumer != producer) {
2245                 context = le32_to_cpu(instance->reply_queue[consumer]);
2246                 if (context >= instance->max_fw_cmds) {
2247                         dev_err(&instance->pdev->dev, "Unexpected context value %x\n",
2248                                 context);
2249                         BUG();
2250                 }
2251
2252                 cmd = instance->cmd_list[context];
2253
2254                 megasas_complete_cmd(instance, cmd, DID_OK);
2255
2256                 consumer++;
2257                 if (consumer == (instance->max_fw_cmds + 1)) {
2258                         consumer = 0;
2259                 }
2260         }
2261
2262         *instance->consumer = cpu_to_le32(producer);
2263
2264         spin_unlock_irqrestore(&instance->completion_lock, flags);
2265
2266         /*
2267          * Check if we can restore can_queue
2268          */
2269         megasas_check_and_restore_queue_depth(instance);
2270 }
2271
2272 static void megasas_sriov_heartbeat_handler(struct timer_list *t);
2273
2274 /**
2275  * megasas_start_timer - Initializes sriov heartbeat timer object
2276  * @instance:           Adapter soft state
2277  *
2278  */
2279 void megasas_start_timer(struct megasas_instance *instance)
2280 {
2281         struct timer_list *timer = &instance->sriov_heartbeat_timer;
2282
2283         timer_setup(timer, megasas_sriov_heartbeat_handler, 0);
2284         timer->expires = jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF;
2285         add_timer(timer);
2286 }
2287
2288 static void
2289 megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
2290
2291 static void
2292 process_fw_state_change_wq(struct work_struct *work);
2293
2294 static void megasas_do_ocr(struct megasas_instance *instance)
2295 {
2296         if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
2297         (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
2298         (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
2299                 *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
2300         }
2301         instance->instancet->disable_intr(instance);
2302         atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
2303         instance->issuepend_done = 0;
2304
2305         atomic_set(&instance->fw_outstanding, 0);
2306         megasas_internal_reset_defer_cmds(instance);
2307         process_fw_state_change_wq(&instance->work_init);
2308 }
2309
2310 static int megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance,
2311                                             int initial)
2312 {
2313         struct megasas_cmd *cmd;
2314         struct megasas_dcmd_frame *dcmd;
2315         struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL;
2316         dma_addr_t new_affiliation_111_h;
2317         int ld, retval = 0;
2318         u8 thisVf;
2319
2320         cmd = megasas_get_cmd(instance);
2321
2322         if (!cmd) {
2323                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation_111:"
2324                        "Failed to get cmd for scsi%d\n",
2325                         instance->host->host_no);
2326                 return -ENOMEM;
2327         }
2328
2329         dcmd = &cmd->frame->dcmd;
2330
2331         if (!instance->vf_affiliation_111) {
2332                 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2333                        "affiliation for scsi%d\n", instance->host->host_no);
2334                 megasas_return_cmd(instance, cmd);
2335                 return -ENOMEM;
2336         }
2337
2338         if (initial)
2339                         memset(instance->vf_affiliation_111, 0,
2340                                sizeof(struct MR_LD_VF_AFFILIATION_111));
2341         else {
2342                 new_affiliation_111 =
2343                         dma_alloc_coherent(&instance->pdev->dev,
2344                                            sizeof(struct MR_LD_VF_AFFILIATION_111),
2345                                            &new_affiliation_111_h, GFP_KERNEL);
2346                 if (!new_affiliation_111) {
2347                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2348                                "memory for new affiliation for scsi%d\n",
2349                                instance->host->host_no);
2350                         megasas_return_cmd(instance, cmd);
2351                         return -ENOMEM;
2352                 }
2353         }
2354
2355         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2356
2357         dcmd->cmd = MFI_CMD_DCMD;
2358         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2359         dcmd->sge_count = 1;
2360         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2361         dcmd->timeout = 0;
2362         dcmd->pad_0 = 0;
2363         dcmd->data_xfer_len =
2364                 cpu_to_le32(sizeof(struct MR_LD_VF_AFFILIATION_111));
2365         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111);
2366
2367         if (initial)
2368                 dcmd->sgl.sge32[0].phys_addr =
2369                         cpu_to_le32(instance->vf_affiliation_111_h);
2370         else
2371                 dcmd->sgl.sge32[0].phys_addr =
2372                         cpu_to_le32(new_affiliation_111_h);
2373
2374         dcmd->sgl.sge32[0].length = cpu_to_le32(
2375                 sizeof(struct MR_LD_VF_AFFILIATION_111));
2376
2377         dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2378                "scsi%d\n", instance->host->host_no);
2379
2380         if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2381                 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2382                        " failed with status 0x%x for scsi%d\n",
2383                        dcmd->cmd_status, instance->host->host_no);
2384                 retval = 1; /* Do a scan if we couldn't get affiliation */
2385                 goto out;
2386         }
2387
2388         if (!initial) {
2389                 thisVf = new_affiliation_111->thisVf;
2390                 for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++)
2391                         if (instance->vf_affiliation_111->map[ld].policy[thisVf] !=
2392                             new_affiliation_111->map[ld].policy[thisVf]) {
2393                                 dev_warn(&instance->pdev->dev, "SR-IOV: "
2394                                        "Got new LD/VF affiliation for scsi%d\n",
2395                                        instance->host->host_no);
2396                                 memcpy(instance->vf_affiliation_111,
2397                                        new_affiliation_111,
2398                                        sizeof(struct MR_LD_VF_AFFILIATION_111));
2399                                 retval = 1;
2400                                 goto out;
2401                         }
2402         }
2403 out:
2404         if (new_affiliation_111) {
2405                 dma_free_coherent(&instance->pdev->dev,
2406                                     sizeof(struct MR_LD_VF_AFFILIATION_111),
2407                                     new_affiliation_111,
2408                                     new_affiliation_111_h);
2409         }
2410
2411         megasas_return_cmd(instance, cmd);
2412
2413         return retval;
2414 }
2415
2416 static int megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance,
2417                                             int initial)
2418 {
2419         struct megasas_cmd *cmd;
2420         struct megasas_dcmd_frame *dcmd;
2421         struct MR_LD_VF_AFFILIATION *new_affiliation = NULL;
2422         struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL;
2423         dma_addr_t new_affiliation_h;
2424         int i, j, retval = 0, found = 0, doscan = 0;
2425         u8 thisVf;
2426
2427         cmd = megasas_get_cmd(instance);
2428
2429         if (!cmd) {
2430                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation12: "
2431                        "Failed to get cmd for scsi%d\n",
2432                        instance->host->host_no);
2433                 return -ENOMEM;
2434         }
2435
2436         dcmd = &cmd->frame->dcmd;
2437
2438         if (!instance->vf_affiliation) {
2439                 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2440                        "affiliation for scsi%d\n", instance->host->host_no);
2441                 megasas_return_cmd(instance, cmd);
2442                 return -ENOMEM;
2443         }
2444
2445         if (initial)
2446                 memset(instance->vf_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
2447                        sizeof(struct MR_LD_VF_AFFILIATION));
2448         else {
2449                 new_affiliation =
2450                         dma_alloc_coherent(&instance->pdev->dev,
2451                                            (MAX_LOGICAL_DRIVES + 1) * sizeof(struct MR_LD_VF_AFFILIATION),
2452                                            &new_affiliation_h, GFP_KERNEL);
2453                 if (!new_affiliation) {
2454                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2455                                "memory for new affiliation for scsi%d\n",
2456                                instance->host->host_no);
2457                         megasas_return_cmd(instance, cmd);
2458                         return -ENOMEM;
2459                 }
2460         }
2461
2462         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2463
2464         dcmd->cmd = MFI_CMD_DCMD;
2465         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2466         dcmd->sge_count = 1;
2467         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2468         dcmd->timeout = 0;
2469         dcmd->pad_0 = 0;
2470         dcmd->data_xfer_len = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2471                 sizeof(struct MR_LD_VF_AFFILIATION));
2472         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS);
2473
2474         if (initial)
2475                 dcmd->sgl.sge32[0].phys_addr =
2476                         cpu_to_le32(instance->vf_affiliation_h);
2477         else
2478                 dcmd->sgl.sge32[0].phys_addr =
2479                         cpu_to_le32(new_affiliation_h);
2480
2481         dcmd->sgl.sge32[0].length = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2482                 sizeof(struct MR_LD_VF_AFFILIATION));
2483
2484         dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2485                "scsi%d\n", instance->host->host_no);
2486
2487
2488         if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2489                 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2490                        " failed with status 0x%x for scsi%d\n",
2491                        dcmd->cmd_status, instance->host->host_no);
2492                 retval = 1; /* Do a scan if we couldn't get affiliation */
2493                 goto out;
2494         }
2495
2496         if (!initial) {
2497                 if (!new_affiliation->ldCount) {
2498                         dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2499                                "affiliation for passive path for scsi%d\n",
2500                                instance->host->host_no);
2501                         retval = 1;
2502                         goto out;
2503                 }
2504                 newmap = new_affiliation->map;
2505                 savedmap = instance->vf_affiliation->map;
2506                 thisVf = new_affiliation->thisVf;
2507                 for (i = 0 ; i < new_affiliation->ldCount; i++) {
2508                         found = 0;
2509                         for (j = 0; j < instance->vf_affiliation->ldCount;
2510                              j++) {
2511                                 if (newmap->ref.targetId ==
2512                                     savedmap->ref.targetId) {
2513                                         found = 1;
2514                                         if (newmap->policy[thisVf] !=
2515                                             savedmap->policy[thisVf]) {
2516                                                 doscan = 1;
2517                                                 goto out;
2518                                         }
2519                                 }
2520                                 savedmap = (struct MR_LD_VF_MAP *)
2521                                         ((unsigned char *)savedmap +
2522                                          savedmap->size);
2523                         }
2524                         if (!found && newmap->policy[thisVf] !=
2525                             MR_LD_ACCESS_HIDDEN) {
2526                                 doscan = 1;
2527                                 goto out;
2528                         }
2529                         newmap = (struct MR_LD_VF_MAP *)
2530                                 ((unsigned char *)newmap + newmap->size);
2531                 }
2532
2533                 newmap = new_affiliation->map;
2534                 savedmap = instance->vf_affiliation->map;
2535
2536                 for (i = 0 ; i < instance->vf_affiliation->ldCount; i++) {
2537                         found = 0;
2538                         for (j = 0 ; j < new_affiliation->ldCount; j++) {
2539                                 if (savedmap->ref.targetId ==
2540                                     newmap->ref.targetId) {
2541                                         found = 1;
2542                                         if (savedmap->policy[thisVf] !=
2543                                             newmap->policy[thisVf]) {
2544                                                 doscan = 1;
2545                                                 goto out;
2546                                         }
2547                                 }
2548                                 newmap = (struct MR_LD_VF_MAP *)
2549                                         ((unsigned char *)newmap +
2550                                          newmap->size);
2551                         }
2552                         if (!found && savedmap->policy[thisVf] !=
2553                             MR_LD_ACCESS_HIDDEN) {
2554                                 doscan = 1;
2555                                 goto out;
2556                         }
2557                         savedmap = (struct MR_LD_VF_MAP *)
2558                                 ((unsigned char *)savedmap +
2559                                  savedmap->size);
2560                 }
2561         }
2562 out:
2563         if (doscan) {
2564                 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2565                        "affiliation for scsi%d\n", instance->host->host_no);
2566                 memcpy(instance->vf_affiliation, new_affiliation,
2567                        new_affiliation->size);
2568                 retval = 1;
2569         }
2570
2571         if (new_affiliation)
2572                 dma_free_coherent(&instance->pdev->dev,
2573                                     (MAX_LOGICAL_DRIVES + 1) *
2574                                     sizeof(struct MR_LD_VF_AFFILIATION),
2575                                     new_affiliation, new_affiliation_h);
2576         megasas_return_cmd(instance, cmd);
2577
2578         return retval;
2579 }
2580
2581 /* This function will get the current SR-IOV LD/VF affiliation */
2582 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
2583         int initial)
2584 {
2585         int retval;
2586
2587         if (instance->PlasmaFW111)
2588                 retval = megasas_get_ld_vf_affiliation_111(instance, initial);
2589         else
2590                 retval = megasas_get_ld_vf_affiliation_12(instance, initial);
2591         return retval;
2592 }
2593
2594 /* This function will tell FW to start the SR-IOV heartbeat */
2595 int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
2596                                          int initial)
2597 {
2598         struct megasas_cmd *cmd;
2599         struct megasas_dcmd_frame *dcmd;
2600         int retval = 0;
2601
2602         cmd = megasas_get_cmd(instance);
2603
2604         if (!cmd) {
2605                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_sriov_start_heartbeat: "
2606                        "Failed to get cmd for scsi%d\n",
2607                        instance->host->host_no);
2608                 return -ENOMEM;
2609         }
2610
2611         dcmd = &cmd->frame->dcmd;
2612
2613         if (initial) {
2614                 instance->hb_host_mem =
2615                         dma_alloc_coherent(&instance->pdev->dev,
2616                                            sizeof(struct MR_CTRL_HB_HOST_MEM),
2617                                            &instance->hb_host_mem_h,
2618                                            GFP_KERNEL);
2619                 if (!instance->hb_host_mem) {
2620                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate"
2621                                " memory for heartbeat host memory for scsi%d\n",
2622                                instance->host->host_no);
2623                         retval = -ENOMEM;
2624                         goto out;
2625                 }
2626         }
2627
2628         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2629
2630         dcmd->mbox.s[0] = cpu_to_le16(sizeof(struct MR_CTRL_HB_HOST_MEM));
2631         dcmd->cmd = MFI_CMD_DCMD;
2632         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2633         dcmd->sge_count = 1;
2634         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2635         dcmd->timeout = 0;
2636         dcmd->pad_0 = 0;
2637         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM));
2638         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC);
2639
2640         megasas_set_dma_settings(instance, dcmd, instance->hb_host_mem_h,
2641                                  sizeof(struct MR_CTRL_HB_HOST_MEM));
2642
2643         dev_warn(&instance->pdev->dev, "SR-IOV: Starting heartbeat for scsi%d\n",
2644                instance->host->host_no);
2645
2646         if ((instance->adapter_type != MFI_SERIES) &&
2647             !instance->mask_interrupts)
2648                 retval = megasas_issue_blocked_cmd(instance, cmd,
2649                         MEGASAS_ROUTINE_WAIT_TIME_VF);
2650         else
2651                 retval = megasas_issue_polled(instance, cmd);
2652
2653         if (retval) {
2654                 dev_warn(&instance->pdev->dev, "SR-IOV: MR_DCMD_CTRL_SHARED_HOST"
2655                         "_MEM_ALLOC DCMD %s for scsi%d\n",
2656                         (dcmd->cmd_status == MFI_STAT_INVALID_STATUS) ?
2657                         "timed out" : "failed", instance->host->host_no);
2658                 retval = 1;
2659         }
2660
2661 out:
2662         megasas_return_cmd(instance, cmd);
2663
2664         return retval;
2665 }
2666
2667 /* Handler for SR-IOV heartbeat */
2668 static void megasas_sriov_heartbeat_handler(struct timer_list *t)
2669 {
2670         struct megasas_instance *instance =
2671                 from_timer(instance, t, sriov_heartbeat_timer);
2672
2673         if (instance->hb_host_mem->HB.fwCounter !=
2674             instance->hb_host_mem->HB.driverCounter) {
2675                 instance->hb_host_mem->HB.driverCounter =
2676                         instance->hb_host_mem->HB.fwCounter;
2677                 mod_timer(&instance->sriov_heartbeat_timer,
2678                           jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
2679         } else {
2680                 dev_warn(&instance->pdev->dev, "SR-IOV: Heartbeat never "
2681                        "completed for scsi%d\n", instance->host->host_no);
2682                 schedule_work(&instance->work_init);
2683         }
2684 }
2685
2686 /**
2687  * megasas_wait_for_outstanding -       Wait for all outstanding cmds
2688  * @instance:                           Adapter soft state
2689  *
2690  * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to
2691  * complete all its outstanding commands. Returns error if one or more IOs
2692  * are pending after this time period. It also marks the controller dead.
2693  */
2694 static int megasas_wait_for_outstanding(struct megasas_instance *instance)
2695 {
2696         int i, sl, outstanding;
2697         u32 reset_index;
2698         u32 wait_time = MEGASAS_RESET_WAIT_TIME;
2699         unsigned long flags;
2700         struct list_head clist_local;
2701         struct megasas_cmd *reset_cmd;
2702         u32 fw_state;
2703
2704         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2705                 dev_info(&instance->pdev->dev, "%s:%d HBA is killed.\n",
2706                 __func__, __LINE__);
2707                 return FAILED;
2708         }
2709
2710         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2711
2712                 INIT_LIST_HEAD(&clist_local);
2713                 spin_lock_irqsave(&instance->hba_lock, flags);
2714                 list_splice_init(&instance->internal_reset_pending_q,
2715                                 &clist_local);
2716                 spin_unlock_irqrestore(&instance->hba_lock, flags);
2717
2718                 dev_notice(&instance->pdev->dev, "HBA reset wait ...\n");
2719                 for (i = 0; i < wait_time; i++) {
2720                         msleep(1000);
2721                         if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL)
2722                                 break;
2723                 }
2724
2725                 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2726                         dev_notice(&instance->pdev->dev, "reset: Stopping HBA.\n");
2727                         atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2728                         return FAILED;
2729                 }
2730
2731                 reset_index = 0;
2732                 while (!list_empty(&clist_local)) {
2733                         reset_cmd = list_entry((&clist_local)->next,
2734                                                 struct megasas_cmd, list);
2735                         list_del_init(&reset_cmd->list);
2736                         if (reset_cmd->scmd) {
2737                                 reset_cmd->scmd->result = DID_REQUEUE << 16;
2738                                 dev_notice(&instance->pdev->dev, "%d:%p reset [%02x]\n",
2739                                         reset_index, reset_cmd,
2740                                         reset_cmd->scmd->cmnd[0]);
2741
2742                                 reset_cmd->scmd->scsi_done(reset_cmd->scmd);
2743                                 megasas_return_cmd(instance, reset_cmd);
2744                         } else if (reset_cmd->sync_cmd) {
2745                                 dev_notice(&instance->pdev->dev, "%p synch cmds"
2746                                                 "reset queue\n",
2747                                                 reset_cmd);
2748
2749                                 reset_cmd->cmd_status_drv = DCMD_INIT;
2750                                 instance->instancet->fire_cmd(instance,
2751                                                 reset_cmd->frame_phys_addr,
2752                                                 0, instance->reg_set);
2753                         } else {
2754                                 dev_notice(&instance->pdev->dev, "%p unexpected"
2755                                         "cmds lst\n",
2756                                         reset_cmd);
2757                         }
2758                         reset_index++;
2759                 }
2760
2761                 return SUCCESS;
2762         }
2763
2764         for (i = 0; i < resetwaittime; i++) {
2765                 outstanding = atomic_read(&instance->fw_outstanding);
2766
2767                 if (!outstanding)
2768                         break;
2769
2770                 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2771                         dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
2772                                "commands to complete\n",i,outstanding);
2773                         /*
2774                          * Call cmd completion routine. Cmd to be
2775                          * be completed directly without depending on isr.
2776                          */
2777                         megasas_complete_cmd_dpc((unsigned long)instance);
2778                 }
2779
2780                 msleep(1000);
2781         }
2782
2783         i = 0;
2784         outstanding = atomic_read(&instance->fw_outstanding);
2785         fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK;
2786
2787         if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2788                 goto no_outstanding;
2789
2790         if (instance->disableOnlineCtrlReset)
2791                 goto kill_hba_and_failed;
2792         do {
2793                 if ((fw_state == MFI_STATE_FAULT) || atomic_read(&instance->fw_outstanding)) {
2794                         dev_info(&instance->pdev->dev,
2795                                 "%s:%d waiting_for_outstanding: before issue OCR. FW state = 0x%x, outstanding 0x%x\n",
2796                                 __func__, __LINE__, fw_state, atomic_read(&instance->fw_outstanding));
2797                         if (i == 3)
2798                                 goto kill_hba_and_failed;
2799                         megasas_do_ocr(instance);
2800
2801                         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2802                                 dev_info(&instance->pdev->dev, "%s:%d OCR failed and HBA is killed.\n",
2803                                 __func__, __LINE__);
2804                                 return FAILED;
2805                         }
2806                         dev_info(&instance->pdev->dev, "%s:%d waiting_for_outstanding: after issue OCR.\n",
2807                                 __func__, __LINE__);
2808
2809                         for (sl = 0; sl < 10; sl++)
2810                                 msleep(500);
2811
2812                         outstanding = atomic_read(&instance->fw_outstanding);
2813
2814                         fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK;
2815                         if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2816                                 goto no_outstanding;
2817                 }
2818                 i++;
2819         } while (i <= 3);
2820
2821 no_outstanding:
2822
2823         dev_info(&instance->pdev->dev, "%s:%d no more pending commands remain after reset handling.\n",
2824                 __func__, __LINE__);
2825         return SUCCESS;
2826
2827 kill_hba_and_failed:
2828
2829         /* Reset not supported, kill adapter */
2830         dev_info(&instance->pdev->dev, "%s:%d killing adapter scsi%d"
2831                 " disableOnlineCtrlReset %d fw_outstanding %d \n",
2832                 __func__, __LINE__, instance->host->host_no, instance->disableOnlineCtrlReset,
2833                 atomic_read(&instance->fw_outstanding));
2834         megasas_dump_pending_frames(instance);
2835         megaraid_sas_kill_hba(instance);
2836
2837         return FAILED;
2838 }
2839
2840 /**
2841  * megasas_generic_reset -      Generic reset routine
2842  * @scmd:                       Mid-layer SCSI command
2843  *
2844  * This routine implements a generic reset handler for device, bus and host
2845  * reset requests. Device, bus and host specific reset handlers can use this
2846  * function after they do their specific tasks.
2847  */
2848 static int megasas_generic_reset(struct scsi_cmnd *scmd)
2849 {
2850         int ret_val;
2851         struct megasas_instance *instance;
2852
2853         instance = (struct megasas_instance *)scmd->device->host->hostdata;
2854
2855         scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n",
2856                  scmd->cmnd[0], scmd->retries);
2857
2858         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2859                 dev_err(&instance->pdev->dev, "cannot recover from previous reset failures\n");
2860                 return FAILED;
2861         }
2862
2863         ret_val = megasas_wait_for_outstanding(instance);
2864         if (ret_val == SUCCESS)
2865                 dev_notice(&instance->pdev->dev, "reset successful\n");
2866         else
2867                 dev_err(&instance->pdev->dev, "failed to do reset\n");
2868
2869         return ret_val;
2870 }
2871
2872 /**
2873  * megasas_reset_timer - quiesce the adapter if required
2874  * @scmd:               scsi cmnd
2875  *
2876  * Sets the FW busy flag and reduces the host->can_queue if the
2877  * cmd has not been completed within the timeout period.
2878  */
2879 static enum
2880 blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
2881 {
2882         struct megasas_instance *instance;
2883         unsigned long flags;
2884
2885         if (time_after(jiffies, scmd->jiffies_at_alloc +
2886                                 (scmd_timeout * 2) * HZ)) {
2887                 return BLK_EH_DONE;
2888         }
2889
2890         instance = (struct megasas_instance *)scmd->device->host->hostdata;
2891         if (!(instance->flag & MEGASAS_FW_BUSY)) {
2892                 /* FW is busy, throttle IO */
2893                 spin_lock_irqsave(instance->host->host_lock, flags);
2894
2895                 instance->host->can_queue = instance->throttlequeuedepth;
2896                 instance->last_time = jiffies;
2897                 instance->flag |= MEGASAS_FW_BUSY;
2898
2899                 spin_unlock_irqrestore(instance->host->host_lock, flags);
2900         }
2901         return BLK_EH_RESET_TIMER;
2902 }
2903
2904 /**
2905  * megasas_dump -       This function will print hexdump of provided buffer.
2906  * @buf:                Buffer to be dumped
2907  * @sz:         Size in bytes
2908  * @format:             Different formats of dumping e.g. format=n will
2909  *                      cause only 'n' 32 bit words to be dumped in a single
2910  *                      line.
2911  */
2912 inline void
2913 megasas_dump(void *buf, int sz, int format)
2914 {
2915         int i;
2916         __le32 *buf_loc = (__le32 *)buf;
2917
2918         for (i = 0; i < (sz / sizeof(__le32)); i++) {
2919                 if ((i % format) == 0) {
2920                         if (i != 0)
2921                                 printk(KERN_CONT "\n");
2922                         printk(KERN_CONT "%08x: ", (i * 4));
2923                 }
2924                 printk(KERN_CONT "%08x ", le32_to_cpu(buf_loc[i]));
2925         }
2926         printk(KERN_CONT "\n");
2927 }
2928
2929 /**
2930  * megasas_dump_reg_set -       This function will print hexdump of register set
2931  * @reg_set:    Register set to be dumped
2932  */
2933 inline void
2934 megasas_dump_reg_set(void __iomem *reg_set)
2935 {
2936         unsigned int i, sz = 256;
2937         u32 __iomem *reg = (u32 __iomem *)reg_set;
2938
2939         for (i = 0; i < (sz / sizeof(u32)); i++)
2940                 printk("%08x: %08x\n", (i * 4), readl(&reg[i]));
2941 }
2942
2943 /**
2944  * megasas_dump_fusion_io -     This function will print key details
2945  *                              of SCSI IO
2946  * @scmd:                       SCSI command pointer of SCSI IO
2947  */
2948 void
2949 megasas_dump_fusion_io(struct scsi_cmnd *scmd)
2950 {
2951         struct megasas_cmd_fusion *cmd;
2952         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
2953         struct megasas_instance *instance;
2954
2955         cmd = (struct megasas_cmd_fusion *)scmd->SCp.ptr;
2956         instance = (struct megasas_instance *)scmd->device->host->hostdata;
2957
2958         scmd_printk(KERN_INFO, scmd,
2959                     "scmd: (0x%p)  retries: 0x%x  allowed: 0x%x\n",
2960                     scmd, scmd->retries, scmd->allowed);
2961         scsi_print_command(scmd);
2962
2963         if (cmd) {
2964                 req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc;
2965                 scmd_printk(KERN_INFO, scmd, "Request descriptor details:\n");
2966                 scmd_printk(KERN_INFO, scmd,
2967                             "RequestFlags:0x%x  MSIxIndex:0x%x  SMID:0x%x  LMID:0x%x  DevHandle:0x%x\n",
2968                             req_desc->SCSIIO.RequestFlags,
2969                             req_desc->SCSIIO.MSIxIndex, req_desc->SCSIIO.SMID,
2970                             req_desc->SCSIIO.LMID, req_desc->SCSIIO.DevHandle);
2971
2972                 printk(KERN_INFO "IO request frame:\n");
2973                 megasas_dump(cmd->io_request,
2974                              MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE, 8);
2975                 printk(KERN_INFO "Chain frame:\n");
2976                 megasas_dump(cmd->sg_frame,
2977                              instance->max_chain_frame_sz, 8);
2978         }
2979
2980 }
2981
2982 /*
2983  * megasas_dump_sys_regs - This function will dump system registers through
2984  *                          sysfs.
2985  * @reg_set:                Pointer to System register set.
2986  * @buf:                    Buffer to which output is to be written.
2987  * @return:                 Number of bytes written to buffer.
2988  */
2989 static inline ssize_t
2990 megasas_dump_sys_regs(void __iomem *reg_set, char *buf)
2991 {
2992         unsigned int i, sz = 256;
2993         int bytes_wrote = 0;
2994         char *loc = (char *)buf;
2995         u32 __iomem *reg = (u32 __iomem *)reg_set;
2996
2997         for (i = 0; i < sz / sizeof(u32); i++) {
2998                 bytes_wrote += scnprintf(loc + bytes_wrote,
2999                                          PAGE_SIZE - bytes_wrote,
3000                                          "%08x: %08x\n", (i * 4),
3001                                          readl(&reg[i]));
3002         }
3003         return bytes_wrote;
3004 }
3005
3006 /**
3007  * megasas_reset_bus_host -     Bus & host reset handler entry point
3008  * @scmd:                       Mid-layer SCSI command
3009  */
3010 static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
3011 {
3012         int ret;
3013         struct megasas_instance *instance;
3014
3015         instance = (struct megasas_instance *)scmd->device->host->hostdata;
3016
3017         scmd_printk(KERN_INFO, scmd,
3018                 "OCR is requested due to IO timeout!!\n");
3019
3020         scmd_printk(KERN_INFO, scmd,
3021                 "SCSI host state: %d  SCSI host busy: %d  FW outstanding: %d\n",
3022                 scmd->device->host->shost_state,
3023                 scsi_host_busy(scmd->device->host),
3024                 atomic_read(&instance->fw_outstanding));
3025         /*
3026          * First wait for all commands to complete
3027          */
3028         if (instance->adapter_type == MFI_SERIES) {
3029                 ret = megasas_generic_reset(scmd);
3030         } else {
3031                 megasas_dump_fusion_io(scmd);
3032                 ret = megasas_reset_fusion(scmd->device->host,
3033                                 SCSIIO_TIMEOUT_OCR);
3034         }
3035
3036         return ret;
3037 }
3038
3039 /**
3040  * megasas_task_abort - Issues task abort request to firmware
3041  *                      (supported only for fusion adapters)
3042  * @scmd:               SCSI command pointer
3043  */
3044 static int megasas_task_abort(struct scsi_cmnd *scmd)
3045 {
3046         int ret;
3047         struct megasas_instance *instance;
3048
3049         instance = (struct megasas_instance *)scmd->device->host->hostdata;
3050
3051         if (instance->adapter_type != MFI_SERIES)
3052                 ret = megasas_task_abort_fusion(scmd);
3053         else {
3054                 sdev_printk(KERN_NOTICE, scmd->device, "TASK ABORT not supported\n");
3055                 ret = FAILED;
3056         }
3057
3058         return ret;
3059 }
3060
3061 /**
3062  * megasas_reset_target:  Issues target reset request to firmware
3063  *                        (supported only for fusion adapters)
3064  * @scmd:                 SCSI command pointer
3065  */
3066 static int megasas_reset_target(struct scsi_cmnd *scmd)
3067 {
3068         int ret;
3069         struct megasas_instance *instance;
3070
3071         instance = (struct megasas_instance *)scmd->device->host->hostdata;
3072
3073         if (instance->adapter_type != MFI_SERIES)
3074                 ret = megasas_reset_target_fusion(scmd);
3075         else {
3076                 sdev_printk(KERN_NOTICE, scmd->device, "TARGET RESET not supported\n");
3077                 ret = FAILED;
3078         }
3079
3080         return ret;
3081 }
3082
3083 /**
3084  * megasas_bios_param - Returns disk geometry for a disk
3085  * @sdev:               device handle
3086  * @bdev:               block device
3087  * @capacity:           drive capacity
3088  * @geom:               geometry parameters
3089  */
3090 static int
3091 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
3092                  sector_t capacity, int geom[])
3093 {
3094         int heads;
3095         int sectors;
3096         sector_t cylinders;
3097         unsigned long tmp;
3098
3099         /* Default heads (64) & sectors (32) */
3100         heads = 64;
3101         sectors = 32;
3102
3103         tmp = heads * sectors;
3104         cylinders = capacity;
3105
3106         sector_div(cylinders, tmp);
3107
3108         /*
3109          * Handle extended translation size for logical drives > 1Gb
3110          */
3111
3112         if (capacity >= 0x200000) {
3113                 heads = 255;
3114                 sectors = 63;
3115                 tmp = heads*sectors;
3116                 cylinders = capacity;
3117                 sector_div(cylinders, tmp);
3118         }
3119
3120         geom[0] = heads;
3121         geom[1] = sectors;
3122         geom[2] = cylinders;
3123
3124         return 0;
3125 }
3126
3127 static int megasas_map_queues(struct Scsi_Host *shost)
3128 {
3129         struct megasas_instance *instance;
3130
3131         instance = (struct megasas_instance *)shost->hostdata;
3132
3133         if (shost->nr_hw_queues == 1)
3134                 return 0;
3135
3136         return blk_mq_pci_map_queues(&shost->tag_set.map[HCTX_TYPE_DEFAULT],
3137                         instance->pdev, instance->low_latency_index_start);
3138 }
3139
3140 static void megasas_aen_polling(struct work_struct *work);
3141
3142 /**
3143  * megasas_service_aen -        Processes an event notification
3144  * @instance:                   Adapter soft state
3145  * @cmd:                        AEN command completed by the ISR
3146  *
3147  * For AEN, driver sends a command down to FW that is held by the FW till an
3148  * event occurs. When an event of interest occurs, FW completes the command
3149  * that it was previously holding.
3150  *
3151  * This routines sends SIGIO signal to processes that have registered with the
3152  * driver for AEN.
3153  */
3154 static void
3155 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
3156 {
3157         unsigned long flags;
3158
3159         /*
3160          * Don't signal app if it is just an aborted previously registered aen
3161          */
3162         if ((!cmd->abort_aen) && (instance->unload == 0)) {
3163                 spin_lock_irqsave(&poll_aen_lock, flags);
3164                 megasas_poll_wait_aen = 1;
3165                 spin_unlock_irqrestore(&poll_aen_lock, flags);
3166                 wake_up(&megasas_poll_wait);
3167                 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
3168         }
3169         else
3170                 cmd->abort_aen = 0;
3171
3172         instance->aen_cmd = NULL;
3173
3174         megasas_return_cmd(instance, cmd);
3175
3176         if ((instance->unload == 0) &&
3177                 ((instance->issuepend_done == 1))) {
3178                 struct megasas_aen_event *ev;
3179
3180                 ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
3181                 if (!ev) {
3182                         dev_err(&instance->pdev->dev, "megasas_service_aen: out of memory\n");
3183                 } else {
3184                         ev->instance = instance;
3185                         instance->ev = ev;
3186                         INIT_DELAYED_WORK(&ev->hotplug_work,
3187                                           megasas_aen_polling);
3188                         schedule_delayed_work(&ev->hotplug_work, 0);
3189                 }
3190         }
3191 }
3192
3193 static ssize_t
3194 fw_crash_buffer_store(struct device *cdev,
3195         struct device_attribute *attr, const char *buf, size_t count)
3196 {
3197         struct Scsi_Host *shost = class_to_shost(cdev);
3198         struct megasas_instance *instance =
3199                 (struct megasas_instance *) shost->hostdata;
3200         int val = 0;
3201         unsigned long flags;
3202
3203         if (kstrtoint(buf, 0, &val) != 0)
3204                 return -EINVAL;
3205
3206         spin_lock_irqsave(&instance->crashdump_lock, flags);
3207         instance->fw_crash_buffer_offset = val;
3208         spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3209         return strlen(buf);
3210 }
3211
3212 static ssize_t
3213 fw_crash_buffer_show(struct device *cdev,
3214         struct device_attribute *attr, char *buf)
3215 {
3216         struct Scsi_Host *shost = class_to_shost(cdev);
3217         struct megasas_instance *instance =
3218                 (struct megasas_instance *) shost->hostdata;
3219         u32 size;
3220         unsigned long dmachunk = CRASH_DMA_BUF_SIZE;
3221         unsigned long chunk_left_bytes;
3222         unsigned long src_addr;
3223         unsigned long flags;
3224         u32 buff_offset;
3225
3226         spin_lock_irqsave(&instance->crashdump_lock, flags);
3227         buff_offset = instance->fw_crash_buffer_offset;
3228         if (!instance->crash_dump_buf &&
3229                 !((instance->fw_crash_state == AVAILABLE) ||
3230                 (instance->fw_crash_state == COPYING))) {
3231                 dev_err(&instance->pdev->dev,
3232                         "Firmware crash dump is not available\n");
3233                 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3234                 return -EINVAL;
3235         }
3236
3237         if (buff_offset > (instance->fw_crash_buffer_size * dmachunk)) {
3238                 dev_err(&instance->pdev->dev,
3239                         "Firmware crash dump offset is out of range\n");
3240                 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3241                 return 0;
3242         }
3243
3244         size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset;
3245         chunk_left_bytes = dmachunk - (buff_offset % dmachunk);
3246         size = (size > chunk_left_bytes) ? chunk_left_bytes : size;
3247         size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size;
3248
3249         src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] +
3250                 (buff_offset % dmachunk);
3251         memcpy(buf, (void *)src_addr, size);
3252         spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3253
3254         return size;
3255 }
3256
3257 static ssize_t
3258 fw_crash_buffer_size_show(struct device *cdev,
3259         struct device_attribute *attr, char *buf)
3260 {
3261         struct Scsi_Host *shost = class_to_shost(cdev);
3262         struct megasas_instance *instance =
3263                 (struct megasas_instance *) shost->hostdata;
3264
3265         return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)
3266                 ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE);
3267 }
3268
3269 static ssize_t
3270 fw_crash_state_store(struct device *cdev,
3271         struct device_attribute *attr, const char *buf, size_t count)
3272 {
3273         struct Scsi_Host *shost = class_to_shost(cdev);
3274         struct megasas_instance *instance =
3275                 (struct megasas_instance *) shost->hostdata;
3276         int val = 0;
3277         unsigned long flags;
3278
3279         if (kstrtoint(buf, 0, &val) != 0)
3280                 return -EINVAL;
3281
3282         if ((val <= AVAILABLE || val > COPY_ERROR)) {
3283                 dev_err(&instance->pdev->dev, "application updates invalid "
3284                         "firmware crash state\n");
3285                 return -EINVAL;
3286         }
3287
3288         instance->fw_crash_state = val;
3289
3290         if ((val == COPIED) || (val == COPY_ERROR)) {
3291                 spin_lock_irqsave(&instance->crashdump_lock, flags);
3292                 megasas_free_host_crash_buffer(instance);
3293                 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3294                 if (val == COPY_ERROR)
3295                         dev_info(&instance->pdev->dev, "application failed to "
3296                                 "copy Firmware crash dump\n");
3297                 else
3298                         dev_info(&instance->pdev->dev, "Firmware crash dump "
3299                                 "copied successfully\n");
3300         }
3301         return strlen(buf);
3302 }
3303
3304 static ssize_t
3305 fw_crash_state_show(struct device *cdev,
3306         struct device_attribute *attr, char *buf)
3307 {
3308         struct Scsi_Host *shost = class_to_shost(cdev);
3309         struct megasas_instance *instance =
3310                 (struct megasas_instance *) shost->hostdata;
3311
3312         return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state);
3313 }
3314
3315 static ssize_t
3316 page_size_show(struct device *cdev,
3317         struct device_attribute *attr, char *buf)
3318 {
3319         return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1);
3320 }
3321
3322 static ssize_t
3323 ldio_outstanding_show(struct device *cdev, struct device_attribute *attr,
3324         char *buf)
3325 {
3326         struct Scsi_Host *shost = class_to_shost(cdev);
3327         struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3328
3329         return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->ldio_outstanding));
3330 }
3331
3332 static ssize_t
3333 fw_cmds_outstanding_show(struct device *cdev,
3334                                  struct device_attribute *attr, char *buf)
3335 {
3336         struct Scsi_Host *shost = class_to_shost(cdev);
3337         struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3338
3339         return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->fw_outstanding));
3340 }
3341
3342 static ssize_t
3343 enable_sdev_max_qd_show(struct device *cdev,
3344         struct device_attribute *attr, char *buf)
3345 {
3346         struct Scsi_Host *shost = class_to_shost(cdev);
3347         struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3348
3349         return snprintf(buf, PAGE_SIZE, "%d\n", instance->enable_sdev_max_qd);
3350 }
3351
3352 static ssize_t
3353 enable_sdev_max_qd_store(struct device *cdev,
3354         struct device_attribute *attr, const char *buf, size_t count)
3355 {
3356         struct Scsi_Host *shost = class_to_shost(cdev);
3357         struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3358         u32 val = 0;
3359         bool is_target_prop;
3360         int ret_target_prop = DCMD_FAILED;
3361         struct scsi_device *sdev;
3362
3363         if (kstrtou32(buf, 0, &val) != 0) {
3364                 pr_err("megasas: could not set enable_sdev_max_qd\n");
3365                 return -EINVAL;
3366         }
3367
3368         mutex_lock(&instance->reset_mutex);
3369         if (val)
3370                 instance->enable_sdev_max_qd = true;
3371         else
3372                 instance->enable_sdev_max_qd = false;
3373
3374         shost_for_each_device(sdev, shost) {
3375                 ret_target_prop = megasas_get_target_prop(instance, sdev);
3376                 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
3377                 megasas_set_fw_assisted_qd(sdev, is_target_prop);
3378         }
3379         mutex_unlock(&instance->reset_mutex);
3380
3381         return strlen(buf);
3382 }
3383
3384 static ssize_t
3385 dump_system_regs_show(struct device *cdev,
3386                                struct device_attribute *attr, char *buf)
3387 {
3388         struct Scsi_Host *shost = class_to_shost(cdev);
3389         struct megasas_instance *instance =
3390                         (struct megasas_instance *)shost->hostdata;
3391
3392         return megasas_dump_sys_regs(instance->reg_set, buf);
3393 }
3394
3395 static ssize_t
3396 raid_map_id_show(struct device *cdev, struct device_attribute *attr,
3397                           char *buf)
3398 {
3399         struct Scsi_Host *shost = class_to_shost(cdev);
3400         struct megasas_instance *instance =
3401                         (struct megasas_instance *)shost->hostdata;
3402
3403         return snprintf(buf, PAGE_SIZE, "%ld\n",
3404                         (unsigned long)instance->map_id);
3405 }
3406
3407 static DEVICE_ATTR_RW(fw_crash_buffer);
3408 static DEVICE_ATTR_RO(fw_crash_buffer_size);
3409 static DEVICE_ATTR_RW(fw_crash_state);
3410 static DEVICE_ATTR_RO(page_size);
3411 static DEVICE_ATTR_RO(ldio_outstanding);
3412 static DEVICE_ATTR_RO(fw_cmds_outstanding);
3413 static DEVICE_ATTR_RW(enable_sdev_max_qd);
3414 static DEVICE_ATTR_RO(dump_system_regs);
3415 static DEVICE_ATTR_RO(raid_map_id);
3416
3417 static struct device_attribute *megaraid_host_attrs[] = {
3418         &dev_attr_fw_crash_buffer_size,
3419         &dev_attr_fw_crash_buffer,
3420         &dev_attr_fw_crash_state,
3421         &dev_attr_page_size,
3422         &dev_attr_ldio_outstanding,
3423         &dev_attr_fw_cmds_outstanding,
3424         &dev_attr_enable_sdev_max_qd,
3425         &dev_attr_dump_system_regs,
3426         &dev_attr_raid_map_id,
3427         NULL,
3428 };
3429
3430 /*
3431  * Scsi host template for megaraid_sas driver
3432  */
3433 static struct scsi_host_template megasas_template = {
3434
3435         .module = THIS_MODULE,
3436         .name = "Avago SAS based MegaRAID driver",
3437         .proc_name = "megaraid_sas",
3438         .slave_configure = megasas_slave_configure,
3439         .slave_alloc = megasas_slave_alloc,
3440         .slave_destroy = megasas_slave_destroy,
3441         .queuecommand = megasas_queue_command,
3442         .eh_target_reset_handler = megasas_reset_target,
3443         .eh_abort_handler = megasas_task_abort,
3444         .eh_host_reset_handler = megasas_reset_bus_host,
3445         .eh_timed_out = megasas_reset_timer,
3446         .shost_attrs = megaraid_host_attrs,
3447         .bios_param = megasas_bios_param,
3448         .map_queues = megasas_map_queues,
3449         .change_queue_depth = scsi_change_queue_depth,
3450         .max_segment_size = 0xffffffff,
3451 };
3452
3453 /**
3454  * megasas_complete_int_cmd -   Completes an internal command
3455  * @instance:                   Adapter soft state
3456  * @cmd:                        Command to be completed
3457  *
3458  * The megasas_issue_blocked_cmd() function waits for a command to complete
3459  * after it issues a command. This function wakes up that waiting routine by
3460  * calling wake_up() on the wait queue.
3461  */
3462 static void
3463 megasas_complete_int_cmd(struct megasas_instance *instance,
3464                          struct megasas_cmd *cmd)
3465 {
3466         if (cmd->cmd_status_drv == DCMD_INIT)
3467                 cmd->cmd_status_drv =
3468                 (cmd->frame->io.cmd_status == MFI_STAT_OK) ?
3469                 DCMD_SUCCESS : DCMD_FAILED;
3470
3471         wake_up(&instance->int_cmd_wait_q);
3472 }
3473
3474 /**
3475  * megasas_complete_abort -     Completes aborting a command
3476  * @instance:                   Adapter soft state
3477  * @cmd:                        Cmd that was issued to abort another cmd
3478  *
3479  * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
3480  * after it issues an abort on a previously issued command. This function
3481  * wakes up all functions waiting on the same wait queue.
3482  */
3483 static void
3484 megasas_complete_abort(struct megasas_instance *instance,
3485                        struct megasas_cmd *cmd)
3486 {
3487         if (cmd->sync_cmd) {
3488                 cmd->sync_cmd = 0;
3489                 cmd->cmd_status_drv = DCMD_SUCCESS;
3490                 wake_up(&instance->abort_cmd_wait_q);
3491         }
3492 }
3493
3494 /**
3495  * megasas_complete_cmd -       Completes a command
3496  * @instance:                   Adapter soft state
3497  * @cmd:                        Command to be completed
3498  * @alt_status:                 If non-zero, use this value as status to
3499  *                              SCSI mid-layer instead of the value returned
3500  *                              by the FW. This should be used if caller wants
3501  *                              an alternate status (as in the case of aborted
3502  *                              commands)
3503  */
3504 void
3505 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
3506                      u8 alt_status)
3507 {
3508         int exception = 0;
3509         struct megasas_header *hdr = &cmd->frame->hdr;
3510         unsigned long flags;
3511         struct fusion_context *fusion = instance->ctrl_context;
3512         u32 opcode, status;
3513
3514         /* flag for the retry reset */
3515         cmd->retry_for_fw_reset = 0;
3516
3517         if (cmd->scmd)
3518                 cmd->scmd->SCp.ptr = NULL;
3519
3520         switch (hdr->cmd) {
3521         case MFI_CMD_INVALID:
3522                 /* Some older 1068 controller FW may keep a pended
3523                    MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel
3524                    when booting the kdump kernel.  Ignore this command to
3525                    prevent a kernel panic on shutdown of the kdump kernel. */
3526                 dev_warn(&instance->pdev->dev, "MFI_CMD_INVALID command "
3527                        "completed\n");
3528                 dev_warn(&instance->pdev->dev, "If you have a controller "
3529                        "other than PERC5, please upgrade your firmware\n");
3530                 break;
3531         case MFI_CMD_PD_SCSI_IO:
3532         case MFI_CMD_LD_SCSI_IO:
3533
3534                 /*
3535                  * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
3536                  * issued either through an IO path or an IOCTL path. If it
3537                  * was via IOCTL, we will send it to internal completion.
3538                  */
3539                 if (cmd->sync_cmd) {
3540                         cmd->sync_cmd = 0;
3541                         megasas_complete_int_cmd(instance, cmd);
3542                         break;
3543                 }
3544                 fallthrough;
3545
3546         case MFI_CMD_LD_READ:
3547         case MFI_CMD_LD_WRITE:
3548
3549                 if (alt_status) {
3550                         cmd->scmd->result = alt_status << 16;
3551                         exception = 1;
3552                 }
3553
3554                 if (exception) {
3555
3556                         atomic_dec(&instance->fw_outstanding);
3557
3558                         scsi_dma_unmap(cmd->scmd);
3559                         cmd->scmd->scsi_done(cmd->scmd);
3560                         megasas_return_cmd(instance, cmd);
3561
3562                         break;
3563                 }
3564
3565                 switch (hdr->cmd_status) {
3566
3567                 case MFI_STAT_OK:
3568                         cmd->scmd->result = DID_OK << 16;
3569                         break;
3570
3571                 case MFI_STAT_SCSI_IO_FAILED:
3572                 case MFI_STAT_LD_INIT_IN_PROGRESS:
3573                         cmd->scmd->result =
3574                             (DID_ERROR << 16) | hdr->scsi_status;
3575                         break;
3576
3577                 case MFI_STAT_SCSI_DONE_WITH_ERROR:
3578
3579                         cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
3580
3581                         if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
3582                                 memset(cmd->scmd->sense_buffer, 0,
3583                                        SCSI_SENSE_BUFFERSIZE);
3584                                 memcpy(cmd->scmd->sense_buffer, cmd->sense,
3585                                        hdr->sense_len);
3586
3587                                 cmd->scmd->result |= DRIVER_SENSE << 24;
3588                         }
3589
3590                         break;
3591
3592                 case MFI_STAT_LD_OFFLINE:
3593                 case MFI_STAT_DEVICE_NOT_FOUND:
3594                         cmd->scmd->result = DID_BAD_TARGET << 16;
3595                         break;
3596
3597                 default:
3598                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "MFI FW status %#x\n",
3599                                hdr->cmd_status);
3600                         cmd->scmd->result = DID_ERROR << 16;
3601                         break;
3602                 }
3603
3604                 atomic_dec(&instance->fw_outstanding);
3605
3606                 scsi_dma_unmap(cmd->scmd);
3607                 cmd->scmd->scsi_done(cmd->scmd);
3608                 megasas_return_cmd(instance, cmd);
3609
3610                 break;
3611
3612         case MFI_CMD_SMP:
3613         case MFI_CMD_STP:
3614         case MFI_CMD_NVME:
3615         case MFI_CMD_TOOLBOX:
3616                 megasas_complete_int_cmd(instance, cmd);
3617                 break;
3618
3619         case MFI_CMD_DCMD:
3620                 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
3621                 /* Check for LD map update */
3622                 if ((opcode == MR_DCMD_LD_MAP_GET_INFO)
3623                         && (cmd->frame->dcmd.mbox.b[1] == 1)) {
3624                         fusion->fast_path_io = 0;
3625                         spin_lock_irqsave(instance->host->host_lock, flags);
3626                         status = cmd->frame->hdr.cmd_status;
3627                         instance->map_update_cmd = NULL;
3628                         if (status != MFI_STAT_OK) {
3629                                 if (status != MFI_STAT_NOT_FOUND)
3630                                         dev_warn(&instance->pdev->dev, "map syncfailed, status = 0x%x\n",
3631                                                cmd->frame->hdr.cmd_status);
3632                                 else {
3633                                         megasas_return_cmd(instance, cmd);
3634                                         spin_unlock_irqrestore(
3635                                                 instance->host->host_lock,
3636                                                 flags);
3637                                         break;
3638                                 }
3639                         }
3640
3641                         megasas_return_cmd(instance, cmd);
3642
3643                         /*
3644                          * Set fast path IO to ZERO.
3645                          * Validate Map will set proper value.
3646                          * Meanwhile all IOs will go as LD IO.
3647                          */
3648                         if (status == MFI_STAT_OK &&
3649                             (MR_ValidateMapInfo(instance, (instance->map_id + 1)))) {
3650                                 instance->map_id++;
3651                                 fusion->fast_path_io = 1;
3652                         } else {
3653                                 fusion->fast_path_io = 0;
3654                         }
3655
3656                         megasas_sync_map_info(instance);
3657                         spin_unlock_irqrestore(instance->host->host_lock,
3658                                                flags);
3659                         break;
3660                 }
3661                 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
3662                     opcode == MR_DCMD_CTRL_EVENT_GET) {
3663                         spin_lock_irqsave(&poll_aen_lock, flags);
3664                         megasas_poll_wait_aen = 0;
3665                         spin_unlock_irqrestore(&poll_aen_lock, flags);
3666                 }
3667
3668                 /* FW has an updated PD sequence */
3669                 if ((opcode == MR_DCMD_SYSTEM_PD_MAP_GET_INFO) &&
3670                         (cmd->frame->dcmd.mbox.b[0] == 1)) {
3671
3672                         spin_lock_irqsave(instance->host->host_lock, flags);
3673                         status = cmd->frame->hdr.cmd_status;
3674                         instance->jbod_seq_cmd = NULL;
3675                         megasas_return_cmd(instance, cmd);
3676
3677                         if (status == MFI_STAT_OK) {
3678                                 instance->pd_seq_map_id++;
3679                                 /* Re-register a pd sync seq num cmd */
3680                                 if (megasas_sync_pd_seq_num(instance, true))
3681                                         instance->use_seqnum_jbod_fp = false;
3682                         } else
3683                                 instance->use_seqnum_jbod_fp = false;
3684
3685                         spin_unlock_irqrestore(instance->host->host_lock, flags);
3686                         break;
3687                 }
3688
3689                 /*
3690                  * See if got an event notification
3691                  */
3692                 if (opcode == MR_DCMD_CTRL_EVENT_WAIT)
3693                         megasas_service_aen(instance, cmd);
3694                 else
3695                         megasas_complete_int_cmd(instance, cmd);
3696
3697                 break;
3698
3699         case MFI_CMD_ABORT:
3700                 /*
3701                  * Cmd issued to abort another cmd returned
3702                  */
3703                 megasas_complete_abort(instance, cmd);
3704                 break;
3705
3706         default:
3707                 dev_info(&instance->pdev->dev, "Unknown command completed! [0x%X]\n",
3708                        hdr->cmd);
3709                 megasas_complete_int_cmd(instance, cmd);
3710                 break;
3711         }
3712 }
3713
3714 /**
3715  * megasas_issue_pending_cmds_again -   issue all pending cmds
3716  *                                      in FW again because of the fw reset
3717  * @instance:                           Adapter soft state
3718  */
3719 static inline void
3720 megasas_issue_pending_cmds_again(struct megasas_instance *instance)
3721 {
3722         struct megasas_cmd *cmd;
3723         struct list_head clist_local;
3724         union megasas_evt_class_locale class_locale;
3725         unsigned long flags;
3726         u32 seq_num;
3727
3728         INIT_LIST_HEAD(&clist_local);
3729         spin_lock_irqsave(&instance->hba_lock, flags);
3730         list_splice_init(&instance->internal_reset_pending_q, &clist_local);
3731         spin_unlock_irqrestore(&instance->hba_lock, flags);
3732
3733         while (!list_empty(&clist_local)) {
3734                 cmd = list_entry((&clist_local)->next,
3735                                         struct megasas_cmd, list);
3736                 list_del_init(&cmd->list);
3737
3738                 if (cmd->sync_cmd || cmd->scmd) {
3739                         dev_notice(&instance->pdev->dev, "command %p, %p:%d"
3740                                 "detected to be pending while HBA reset\n",
3741                                         cmd, cmd->scmd, cmd->sync_cmd);
3742
3743                         cmd->retry_for_fw_reset++;
3744
3745                         if (cmd->retry_for_fw_reset == 3) {
3746                                 dev_notice(&instance->pdev->dev, "cmd %p, %p:%d"
3747                                         "was tried multiple times during reset."
3748                                         "Shutting down the HBA\n",
3749                                         cmd, cmd->scmd, cmd->sync_cmd);
3750                                 instance->instancet->disable_intr(instance);
3751                                 atomic_set(&instance->fw_reset_no_pci_access, 1);
3752                                 megaraid_sas_kill_hba(instance);
3753                                 return;
3754                         }
3755                 }
3756
3757                 if (cmd->sync_cmd == 1) {
3758                         if (cmd->scmd) {
3759                                 dev_notice(&instance->pdev->dev, "unexpected"
3760                                         "cmd attached to internal command!\n");
3761                         }
3762                         dev_notice(&instance->pdev->dev, "%p synchronous cmd"
3763                                                 "on the internal reset queue,"
3764                                                 "issue it again.\n", cmd);
3765                         cmd->cmd_status_drv = DCMD_INIT;
3766                         instance->instancet->fire_cmd(instance,
3767                                                         cmd->frame_phys_addr,
3768                                                         0, instance->reg_set);
3769                 } else if (cmd->scmd) {
3770                         dev_notice(&instance->pdev->dev, "%p scsi cmd [%02x]"
3771                         "detected on the internal queue, issue again.\n",
3772                         cmd, cmd->scmd->cmnd[0]);
3773
3774                         atomic_inc(&instance->fw_outstanding);
3775                         instance->instancet->fire_cmd(instance,
3776                                         cmd->frame_phys_addr,
3777                                         cmd->frame_count-1, instance->reg_set);
3778                 } else {
3779                         dev_notice(&instance->pdev->dev, "%p unexpected cmd on the"
3780                                 "internal reset defer list while re-issue!!\n",
3781                                 cmd);
3782                 }
3783         }
3784
3785         if (instance->aen_cmd) {
3786                 dev_notice(&instance->pdev->dev, "aen_cmd in def process\n");
3787                 megasas_return_cmd(instance, instance->aen_cmd);
3788
3789                 instance->aen_cmd = NULL;
3790         }
3791
3792         /*
3793          * Initiate AEN (Asynchronous Event Notification)
3794          */
3795         seq_num = instance->last_seq_num;
3796         class_locale.members.reserved = 0;
3797         class_locale.members.locale = MR_EVT_LOCALE_ALL;
3798         class_locale.members.class = MR_EVT_CLASS_DEBUG;
3799
3800         megasas_register_aen(instance, seq_num, class_locale.word);
3801 }
3802
3803 /*
3804  * Move the internal reset pending commands to a deferred queue.
3805  *
3806  * We move the commands pending at internal reset time to a
3807  * pending queue. This queue would be flushed after successful
3808  * completion of the internal reset sequence. if the internal reset
3809  * did not complete in time, the kernel reset handler would flush
3810  * these commands.
3811  */
3812 static void
3813 megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
3814 {
3815         struct megasas_cmd *cmd;
3816         int i;
3817         u16 max_cmd = instance->max_fw_cmds;
3818         u32 defer_index;
3819         unsigned long flags;
3820
3821         defer_index = 0;
3822         spin_lock_irqsave(&instance->mfi_pool_lock, flags);
3823         for (i = 0; i < max_cmd; i++) {
3824                 cmd = instance->cmd_list[i];
3825                 if (cmd->sync_cmd == 1 || cmd->scmd) {
3826                         dev_notice(&instance->pdev->dev, "moving cmd[%d]:%p:%d:%p"
3827                                         "on the defer queue as internal\n",
3828                                 defer_index, cmd, cmd->sync_cmd, cmd->scmd);
3829
3830                         if (!list_empty(&cmd->list)) {
3831                                 dev_notice(&instance->pdev->dev, "ERROR while"
3832                                         " moving this cmd:%p, %d %p, it was"
3833                                         "discovered on some list?\n",
3834                                         cmd, cmd->sync_cmd, cmd->scmd);
3835
3836                                 list_del_init(&cmd->list);
3837                         }
3838                         defer_index++;
3839                         list_add_tail(&cmd->list,
3840                                 &instance->internal_reset_pending_q);
3841                 }
3842         }
3843         spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
3844 }
3845
3846
3847 static void
3848 process_fw_state_change_wq(struct work_struct *work)
3849 {
3850         struct megasas_instance *instance =
3851                 container_of(work, struct megasas_instance, work_init);
3852         u32 wait;
3853         unsigned long flags;
3854
3855     if (atomic_read(&instance->adprecovery) != MEGASAS_ADPRESET_SM_INFAULT) {
3856                 dev_notice(&instance->pdev->dev, "error, recovery st %x\n",
3857                                 atomic_read(&instance->adprecovery));
3858                 return ;
3859         }
3860
3861         if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
3862                 dev_notice(&instance->pdev->dev, "FW detected to be in fault"
3863                                         "state, restarting it...\n");
3864
3865                 instance->instancet->disable_intr(instance);
3866                 atomic_set(&instance->fw_outstanding, 0);
3867
3868                 atomic_set(&instance->fw_reset_no_pci_access, 1);
3869                 instance->instancet->adp_reset(instance, instance->reg_set);
3870                 atomic_set(&instance->fw_reset_no_pci_access, 0);
3871
3872                 dev_notice(&instance->pdev->dev, "FW restarted successfully,"
3873                                         "initiating next stage...\n");
3874
3875                 dev_notice(&instance->pdev->dev, "HBA recovery state machine,"
3876                                         "state 2 starting...\n");
3877
3878                 /* waiting for about 20 second before start the second init */
3879                 for (wait = 0; wait < 30; wait++) {
3880                         msleep(1000);
3881                 }
3882
3883                 if (megasas_transition_to_ready(instance, 1)) {
3884                         dev_notice(&instance->pdev->dev, "adapter not ready\n");
3885
3886                         atomic_set(&instance->fw_reset_no_pci_access, 1);
3887                         megaraid_sas_kill_hba(instance);
3888                         return ;
3889                 }
3890
3891                 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
3892                         (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
3893                         (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
3894                         ) {
3895                         *instance->consumer = *instance->producer;
3896                 } else {
3897                         *instance->consumer = 0;
3898                         *instance->producer = 0;
3899                 }
3900
3901                 megasas_issue_init_mfi(instance);
3902
3903                 spin_lock_irqsave(&instance->hba_lock, flags);
3904                 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
3905                 spin_unlock_irqrestore(&instance->hba_lock, flags);
3906                 instance->instancet->enable_intr(instance);
3907
3908                 megasas_issue_pending_cmds_again(instance);
3909                 instance->issuepend_done = 1;
3910         }
3911 }
3912
3913 /**
3914  * megasas_deplete_reply_queue -        Processes all completed commands
3915  * @instance:                           Adapter soft state
3916  * @alt_status:                         Alternate status to be returned to
3917  *                                      SCSI mid-layer instead of the status
3918  *                                      returned by the FW
3919  * Note: this must be called with hba lock held
3920  */
3921 static int
3922 megasas_deplete_reply_queue(struct megasas_instance *instance,
3923                                         u8 alt_status)
3924 {
3925         u32 mfiStatus;
3926         u32 fw_state;
3927
3928         if ((mfiStatus = instance->instancet->check_reset(instance,
3929                                         instance->reg_set)) == 1) {
3930                 return IRQ_HANDLED;
3931         }
3932
3933         mfiStatus = instance->instancet->clear_intr(instance);
3934         if (mfiStatus == 0) {
3935                 /* Hardware may not set outbound_intr_status in MSI-X mode */
3936                 if (!instance->msix_vectors)
3937                         return IRQ_NONE;
3938         }
3939
3940         instance->mfiStatus = mfiStatus;
3941
3942         if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
3943                 fw_state = instance->instancet->read_fw_status_reg(
3944                                 instance) & MFI_STATE_MASK;
3945
3946                 if (fw_state != MFI_STATE_FAULT) {
3947                         dev_notice(&instance->pdev->dev, "fw state:%x\n",
3948                                                 fw_state);
3949                 }
3950
3951                 if ((fw_state == MFI_STATE_FAULT) &&
3952                                 (instance->disableOnlineCtrlReset == 0)) {
3953                         dev_notice(&instance->pdev->dev, "wait adp restart\n");
3954
3955                         if ((instance->pdev->device ==
3956                                         PCI_DEVICE_ID_LSI_SAS1064R) ||
3957                                 (instance->pdev->device ==
3958                                         PCI_DEVICE_ID_DELL_PERC5) ||
3959                                 (instance->pdev->device ==
3960                                         PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
3961
3962                                 *instance->consumer =
3963                                         cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
3964                         }
3965
3966
3967                         instance->instancet->disable_intr(instance);
3968                         atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
3969                         instance->issuepend_done = 0;
3970
3971                         atomic_set(&instance->fw_outstanding, 0);
3972                         megasas_internal_reset_defer_cmds(instance);
3973
3974                         dev_notice(&instance->pdev->dev, "fwState=%x, stage:%d\n",
3975                                         fw_state, atomic_read(&instance->adprecovery));
3976
3977                         schedule_work(&instance->work_init);
3978                         return IRQ_HANDLED;
3979
3980                 } else {
3981                         dev_notice(&instance->pdev->dev, "fwstate:%x, dis_OCR=%x\n",
3982                                 fw_state, instance->disableOnlineCtrlReset);
3983                 }
3984         }
3985
3986         tasklet_schedule(&instance->isr_tasklet);
3987         return IRQ_HANDLED;
3988 }
3989
3990 /**
3991  * megasas_isr - isr entry point
3992  * @irq:        IRQ number
3993  * @devp:       IRQ context address
3994  */
3995 static irqreturn_t megasas_isr(int irq, void *devp)
3996 {
3997         struct megasas_irq_context *irq_context = devp;
3998         struct megasas_instance *instance = irq_context->instance;
3999         unsigned long flags;
4000         irqreturn_t rc;
4001
4002         if (atomic_read(&instance->fw_reset_no_pci_access))
4003                 return IRQ_HANDLED;
4004
4005         spin_lock_irqsave(&instance->hba_lock, flags);
4006         rc = megasas_deplete_reply_queue(instance, DID_OK);
4007         spin_unlock_irqrestore(&instance->hba_lock, flags);
4008
4009         return rc;
4010 }
4011
4012 /**
4013  * megasas_transition_to_ready -        Move the FW to READY state
4014  * @instance:                           Adapter soft state
4015  * @ocr:                                Adapter reset state
4016  *
4017  * During the initialization, FW passes can potentially be in any one of
4018  * several possible states. If the FW in operational, waiting-for-handshake
4019  * states, driver must take steps to bring it to ready state. Otherwise, it
4020  * has to wait for the ready state.
4021  */
4022 int
4023 megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
4024 {
4025         int i;
4026         u8 max_wait;
4027         u32 fw_state;
4028         u32 abs_state, curr_abs_state;
4029
4030         abs_state = instance->instancet->read_fw_status_reg(instance);
4031         fw_state = abs_state & MFI_STATE_MASK;
4032
4033         if (fw_state != MFI_STATE_READY)
4034                 dev_info(&instance->pdev->dev, "Waiting for FW to come to ready"
4035                        " state\n");
4036
4037         while (fw_state != MFI_STATE_READY) {
4038
4039                 switch (fw_state) {
4040
4041                 case MFI_STATE_FAULT:
4042                         dev_printk(KERN_ERR, &instance->pdev->dev,
4043                                    "FW in FAULT state, Fault code:0x%x subcode:0x%x func:%s\n",
4044                                    abs_state & MFI_STATE_FAULT_CODE,
4045                                    abs_state & MFI_STATE_FAULT_SUBCODE, __func__);
4046                         if (ocr) {
4047                                 max_wait = MEGASAS_RESET_WAIT_TIME;
4048                                 break;
4049                         } else {
4050                                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4051                                 megasas_dump_reg_set(instance->reg_set);
4052                                 return -ENODEV;
4053                         }
4054
4055                 case MFI_STATE_WAIT_HANDSHAKE:
4056                         /*
4057                          * Set the CLR bit in inbound doorbell
4058                          */
4059                         if ((instance->pdev->device ==
4060                                 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4061                                 (instance->pdev->device ==
4062                                  PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4063                                 (instance->adapter_type != MFI_SERIES))
4064                                 writel(
4065                                   MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
4066                                   &instance->reg_set->doorbell);
4067                         else
4068                                 writel(
4069                                     MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
4070                                         &instance->reg_set->inbound_doorbell);
4071
4072                         max_wait = MEGASAS_RESET_WAIT_TIME;
4073                         break;
4074
4075                 case MFI_STATE_BOOT_MESSAGE_PENDING:
4076                         if ((instance->pdev->device ==
4077                              PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4078                                 (instance->pdev->device ==
4079                                  PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4080                                 (instance->adapter_type != MFI_SERIES))
4081                                 writel(MFI_INIT_HOTPLUG,
4082                                        &instance->reg_set->doorbell);
4083                         else
4084                                 writel(MFI_INIT_HOTPLUG,
4085                                         &instance->reg_set->inbound_doorbell);
4086
4087                         max_wait = MEGASAS_RESET_WAIT_TIME;
4088                         break;
4089
4090                 case MFI_STATE_OPERATIONAL:
4091                         /*
4092                          * Bring it to READY state; assuming max wait 10 secs
4093                          */
4094                         instance->instancet->disable_intr(instance);
4095                         if ((instance->pdev->device ==
4096                                 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4097                                 (instance->pdev->device ==
4098                                 PCI_DEVICE_ID_LSI_SAS0071SKINNY)  ||
4099                                 (instance->adapter_type != MFI_SERIES)) {
4100                                 writel(MFI_RESET_FLAGS,
4101                                         &instance->reg_set->doorbell);
4102
4103                                 if (instance->adapter_type != MFI_SERIES) {
4104                                         for (i = 0; i < (10 * 1000); i += 20) {
4105                                                 if (megasas_readl(
4106                                                             instance,
4107                                                             &instance->
4108                                                             reg_set->
4109                                                             doorbell) & 1)
4110                                                         msleep(20);
4111                                                 else
4112                                                         break;
4113                                         }
4114                                 }
4115                         } else
4116                                 writel(MFI_RESET_FLAGS,
4117                                         &instance->reg_set->inbound_doorbell);
4118
4119                         max_wait = MEGASAS_RESET_WAIT_TIME;
4120                         break;
4121
4122                 case MFI_STATE_UNDEFINED:
4123                         /*
4124                          * This state should not last for more than 2 seconds
4125                          */
4126                         max_wait = MEGASAS_RESET_WAIT_TIME;
4127                         break;
4128
4129                 case MFI_STATE_BB_INIT:
4130                         max_wait = MEGASAS_RESET_WAIT_TIME;
4131                         break;
4132
4133                 case MFI_STATE_FW_INIT:
4134                         max_wait = MEGASAS_RESET_WAIT_TIME;
4135                         break;
4136
4137                 case MFI_STATE_FW_INIT_2:
4138                         max_wait = MEGASAS_RESET_WAIT_TIME;
4139                         break;
4140
4141                 case MFI_STATE_DEVICE_SCAN:
4142                         max_wait = MEGASAS_RESET_WAIT_TIME;
4143                         break;
4144
4145                 case MFI_STATE_FLUSH_CACHE:
4146                         max_wait = MEGASAS_RESET_WAIT_TIME;
4147                         break;
4148
4149                 default:
4150                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "Unknown state 0x%x\n",
4151                                fw_state);
4152                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4153                         megasas_dump_reg_set(instance->reg_set);
4154                         return -ENODEV;
4155                 }
4156
4157                 /*
4158                  * The cur_state should not last for more than max_wait secs
4159                  */
4160                 for (i = 0; i < max_wait * 50; i++) {
4161                         curr_abs_state = instance->instancet->
4162                                 read_fw_status_reg(instance);
4163
4164                         if (abs_state == curr_abs_state) {
4165                                 msleep(20);
4166                         } else
4167                                 break;
4168                 }
4169
4170                 /*
4171                  * Return error if fw_state hasn't changed after max_wait
4172                  */
4173                 if (curr_abs_state == abs_state) {
4174                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW state [%d] hasn't changed "
4175                                "in %d secs\n", fw_state, max_wait);
4176                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4177                         megasas_dump_reg_set(instance->reg_set);
4178                         return -ENODEV;
4179                 }
4180
4181                 abs_state = curr_abs_state;
4182                 fw_state = curr_abs_state & MFI_STATE_MASK;
4183         }
4184         dev_info(&instance->pdev->dev, "FW now in Ready state\n");
4185
4186         return 0;
4187 }
4188
4189 /**
4190  * megasas_teardown_frame_pool -        Destroy the cmd frame DMA pool
4191  * @instance:                           Adapter soft state
4192  */
4193 static void megasas_teardown_frame_pool(struct megasas_instance *instance)
4194 {
4195         int i;
4196         u16 max_cmd = instance->max_mfi_cmds;
4197         struct megasas_cmd *cmd;
4198
4199         if (!instance->frame_dma_pool)
4200                 return;
4201
4202         /*
4203          * Return all frames to pool
4204          */
4205         for (i = 0; i < max_cmd; i++) {
4206
4207                 cmd = instance->cmd_list[i];
4208
4209                 if (cmd->frame)
4210                         dma_pool_free(instance->frame_dma_pool, cmd->frame,
4211                                       cmd->frame_phys_addr);
4212
4213                 if (cmd->sense)
4214                         dma_pool_free(instance->sense_dma_pool, cmd->sense,
4215                                       cmd->sense_phys_addr);
4216         }
4217
4218         /*
4219          * Now destroy the pool itself
4220          */
4221         dma_pool_destroy(instance->frame_dma_pool);
4222         dma_pool_destroy(instance->sense_dma_pool);
4223
4224         instance->frame_dma_pool = NULL;
4225         instance->sense_dma_pool = NULL;
4226 }
4227
4228 /**
4229  * megasas_create_frame_pool -  Creates DMA pool for cmd frames
4230  * @instance:                   Adapter soft state
4231  *
4232  * Each command packet has an embedded DMA memory buffer that is used for
4233  * filling MFI frame and the SG list that immediately follows the frame. This
4234  * function creates those DMA memory buffers for each command packet by using
4235  * PCI pool facility.
4236  */
4237 static int megasas_create_frame_pool(struct megasas_instance *instance)
4238 {
4239         int i;
4240         u16 max_cmd;
4241         u32 frame_count;
4242         struct megasas_cmd *cmd;
4243
4244         max_cmd = instance->max_mfi_cmds;
4245
4246         /*
4247          * For MFI controllers.
4248          * max_num_sge = 60
4249          * max_sge_sz  = 16 byte (sizeof megasas_sge_skinny)
4250          * Total 960 byte (15 MFI frame of 64 byte)
4251          *
4252          * Fusion adapter require only 3 extra frame.
4253          * max_num_sge = 16 (defined as MAX_IOCTL_SGE)
4254          * max_sge_sz  = 12 byte (sizeof  megasas_sge64)
4255          * Total 192 byte (3 MFI frame of 64 byte)
4256          */
4257         frame_count = (instance->adapter_type == MFI_SERIES) ?
4258                         (15 + 1) : (3 + 1);
4259         instance->mfi_frame_size = MEGAMFI_FRAME_SIZE * frame_count;
4260         /*
4261          * Use DMA pool facility provided by PCI layer
4262          */
4263         instance->frame_dma_pool = dma_pool_create("megasas frame pool",
4264                                         &instance->pdev->dev,
4265                                         instance->mfi_frame_size, 256, 0);
4266
4267         if (!instance->frame_dma_pool) {
4268                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup frame pool\n");
4269                 return -ENOMEM;
4270         }
4271
4272         instance->sense_dma_pool = dma_pool_create("megasas sense pool",
4273                                                    &instance->pdev->dev, 128,
4274                                                    4, 0);
4275
4276         if (!instance->sense_dma_pool) {
4277                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup sense pool\n");
4278
4279                 dma_pool_destroy(instance->frame_dma_pool);
4280                 instance->frame_dma_pool = NULL;
4281
4282                 return -ENOMEM;
4283         }
4284
4285         /*
4286          * Allocate and attach a frame to each of the commands in cmd_list.
4287          * By making cmd->index as the context instead of the &cmd, we can
4288          * always use 32bit context regardless of the architecture
4289          */
4290         for (i = 0; i < max_cmd; i++) {
4291
4292                 cmd = instance->cmd_list[i];
4293
4294                 cmd->frame = dma_pool_zalloc(instance->frame_dma_pool,
4295                                             GFP_KERNEL, &cmd->frame_phys_addr);
4296
4297                 cmd->sense = dma_pool_alloc(instance->sense_dma_pool,
4298                                             GFP_KERNEL, &cmd->sense_phys_addr);
4299
4300                 /*
4301                  * megasas_teardown_frame_pool() takes care of freeing
4302                  * whatever has been allocated
4303                  */
4304                 if (!cmd->frame || !cmd->sense) {
4305                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "dma_pool_alloc failed\n");
4306                         megasas_teardown_frame_pool(instance);
4307                         return -ENOMEM;
4308                 }
4309
4310                 cmd->frame->io.context = cpu_to_le32(cmd->index);
4311                 cmd->frame->io.pad_0 = 0;
4312                 if ((instance->adapter_type == MFI_SERIES) && reset_devices)
4313                         cmd->frame->hdr.cmd = MFI_CMD_INVALID;
4314         }
4315
4316         return 0;
4317 }
4318
4319 /**
4320  * megasas_free_cmds -  Free all the cmds in the free cmd pool
4321  * @instance:           Adapter soft state
4322  */
4323 void megasas_free_cmds(struct megasas_instance *instance)
4324 {
4325         int i;
4326
4327         /* First free the MFI frame pool */
4328         megasas_teardown_frame_pool(instance);
4329
4330         /* Free all the commands in the cmd_list */
4331         for (i = 0; i < instance->max_mfi_cmds; i++)
4332
4333                 kfree(instance->cmd_list[i]);
4334
4335         /* Free the cmd_list buffer itself */
4336         kfree(instance->cmd_list);
4337         instance->cmd_list = NULL;
4338
4339         INIT_LIST_HEAD(&instance->cmd_pool);
4340 }
4341
4342 /**
4343  * megasas_alloc_cmds - Allocates the command packets
4344  * @instance:           Adapter soft state
4345  *
4346  * Each command that is issued to the FW, whether IO commands from the OS or
4347  * internal commands like IOCTLs, are wrapped in local data structure called
4348  * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
4349  * the FW.
4350  *
4351  * Each frame has a 32-bit field called context (tag). This context is used
4352  * to get back the megasas_cmd from the frame when a frame gets completed in
4353  * the ISR. Typically the address of the megasas_cmd itself would be used as
4354  * the context. But we wanted to keep the differences between 32 and 64 bit
4355  * systems to the mininum. We always use 32 bit integers for the context. In
4356  * this driver, the 32 bit values are the indices into an array cmd_list.
4357  * This array is used only to look up the megasas_cmd given the context. The
4358  * free commands themselves are maintained in a linked list called cmd_pool.
4359  */
4360 int megasas_alloc_cmds(struct megasas_instance *instance)
4361 {
4362         int i;
4363         int j;
4364         u16 max_cmd;
4365         struct megasas_cmd *cmd;
4366
4367         max_cmd = instance->max_mfi_cmds;
4368
4369         /*
4370          * instance->cmd_list is an array of struct megasas_cmd pointers.
4371          * Allocate the dynamic array first and then allocate individual
4372          * commands.
4373          */
4374         instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
4375
4376         if (!instance->cmd_list) {
4377                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "out of memory\n");
4378                 return -ENOMEM;
4379         }
4380
4381         memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd);
4382
4383         for (i = 0; i < max_cmd; i++) {
4384                 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
4385                                                 GFP_KERNEL);
4386
4387                 if (!instance->cmd_list[i]) {
4388
4389                         for (j = 0; j < i; j++)
4390                                 kfree(instance->cmd_list[j]);
4391
4392                         kfree(instance->cmd_list);
4393                         instance->cmd_list = NULL;
4394
4395                         return -ENOMEM;
4396                 }
4397         }
4398
4399         for (i = 0; i < max_cmd; i++) {
4400                 cmd = instance->cmd_list[i];
4401                 memset(cmd, 0, sizeof(struct megasas_cmd));
4402                 cmd->index = i;
4403                 cmd->scmd = NULL;
4404                 cmd->instance = instance;
4405
4406                 list_add_tail(&cmd->list, &instance->cmd_pool);
4407         }
4408
4409         /*
4410          * Create a frame pool and assign one frame to each cmd
4411          */
4412         if (megasas_create_frame_pool(instance)) {
4413                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error creating frame DMA pool\n");
4414                 megasas_free_cmds(instance);
4415                 return -ENOMEM;
4416         }
4417
4418         return 0;
4419 }
4420
4421 /*
4422  * dcmd_timeout_ocr_possible -  Check if OCR is possible based on Driver/FW state.
4423  * @instance:                           Adapter soft state
4424  *
4425  * Return 0 for only Fusion adapter, if driver load/unload is not in progress
4426  * or FW is not under OCR.
4427  */
4428 inline int
4429 dcmd_timeout_ocr_possible(struct megasas_instance *instance) {
4430
4431         if (instance->adapter_type == MFI_SERIES)
4432                 return KILL_ADAPTER;
4433         else if (instance->unload ||
4434                         test_bit(MEGASAS_FUSION_OCR_NOT_POSSIBLE,
4435                                  &instance->reset_flags))
4436                 return IGNORE_TIMEOUT;
4437         else
4438                 return INITIATE_OCR;
4439 }
4440
4441 static void
4442 megasas_get_pd_info(struct megasas_instance *instance, struct scsi_device *sdev)
4443 {
4444         int ret;
4445         struct megasas_cmd *cmd;
4446         struct megasas_dcmd_frame *dcmd;
4447
4448         struct MR_PRIV_DEVICE *mr_device_priv_data;
4449         u16 device_id = 0;
4450
4451         device_id = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + sdev->id;
4452         cmd = megasas_get_cmd(instance);
4453
4454         if (!cmd) {
4455                 dev_err(&instance->pdev->dev, "Failed to get cmd %s\n", __func__);
4456                 return;
4457         }
4458
4459         dcmd = &cmd->frame->dcmd;
4460
4461         memset(instance->pd_info, 0, sizeof(*instance->pd_info));
4462         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4463
4464         dcmd->mbox.s[0] = cpu_to_le16(device_id);
4465         dcmd->cmd = MFI_CMD_DCMD;
4466         dcmd->cmd_status = 0xFF;
4467         dcmd->sge_count = 1;
4468         dcmd->flags = MFI_FRAME_DIR_READ;
4469         dcmd->timeout = 0;
4470         dcmd->pad_0 = 0;
4471         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_PD_INFO));
4472         dcmd->opcode = cpu_to_le32(MR_DCMD_PD_GET_INFO);
4473
4474         megasas_set_dma_settings(instance, dcmd, instance->pd_info_h,
4475                                  sizeof(struct MR_PD_INFO));
4476
4477         if ((instance->adapter_type != MFI_SERIES) &&
4478             !instance->mask_interrupts)
4479                 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4480         else
4481                 ret = megasas_issue_polled(instance, cmd);
4482
4483         switch (ret) {
4484         case DCMD_SUCCESS:
4485                 mr_device_priv_data = sdev->hostdata;
4486                 le16_to_cpus((u16 *)&instance->pd_info->state.ddf.pdType);
4487                 mr_device_priv_data->interface_type =
4488                                 instance->pd_info->state.ddf.pdType.intf;
4489                 break;
4490
4491         case DCMD_TIMEOUT:
4492
4493                 switch (dcmd_timeout_ocr_possible(instance)) {
4494                 case INITIATE_OCR:
4495                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4496                         mutex_unlock(&instance->reset_mutex);
4497                         megasas_reset_fusion(instance->host,
4498                                 MFI_IO_TIMEOUT_OCR);
4499                         mutex_lock(&instance->reset_mutex);
4500                         break;
4501                 case KILL_ADAPTER:
4502                         megaraid_sas_kill_hba(instance);
4503                         break;
4504                 case IGNORE_TIMEOUT:
4505                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4506                                 __func__, __LINE__);
4507                         break;
4508                 }
4509
4510                 break;
4511         }
4512
4513         if (ret != DCMD_TIMEOUT)
4514                 megasas_return_cmd(instance, cmd);
4515
4516         return;
4517 }
4518 /*
4519  * megasas_get_pd_list_info -   Returns FW's pd_list structure
4520  * @instance:                           Adapter soft state
4521  * @pd_list:                            pd_list structure
4522  *
4523  * Issues an internal command (DCMD) to get the FW's controller PD
4524  * list structure.  This information is mainly used to find out SYSTEM
4525  * supported by the FW.
4526  */
4527 static int
4528 megasas_get_pd_list(struct megasas_instance *instance)
4529 {
4530         int ret = 0, pd_index = 0;
4531         struct megasas_cmd *cmd;
4532         struct megasas_dcmd_frame *dcmd;
4533         struct MR_PD_LIST *ci;
4534         struct MR_PD_ADDRESS *pd_addr;
4535
4536         if (instance->pd_list_not_supported) {
4537                 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4538                 "not supported by firmware\n");
4539                 return ret;
4540         }
4541
4542         ci = instance->pd_list_buf;
4543
4544         cmd = megasas_get_cmd(instance);
4545
4546         if (!cmd) {
4547                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "(get_pd_list): Failed to get cmd\n");
4548                 return -ENOMEM;
4549         }
4550
4551         dcmd = &cmd->frame->dcmd;
4552
4553         memset(ci, 0, sizeof(*ci));
4554         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4555
4556         dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
4557         dcmd->mbox.b[1] = 0;
4558         dcmd->cmd = MFI_CMD_DCMD;
4559         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4560         dcmd->sge_count = 1;
4561         dcmd->flags = MFI_FRAME_DIR_READ;
4562         dcmd->timeout = 0;
4563         dcmd->pad_0 = 0;
4564         dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
4565         dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY);
4566
4567         megasas_set_dma_settings(instance, dcmd, instance->pd_list_buf_h,
4568                                  (MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST)));
4569
4570         if ((instance->adapter_type != MFI_SERIES) &&
4571             !instance->mask_interrupts)
4572                 ret = megasas_issue_blocked_cmd(instance, cmd,
4573                         MFI_IO_TIMEOUT_SECS);
4574         else
4575                 ret = megasas_issue_polled(instance, cmd);
4576
4577         switch (ret) {
4578         case DCMD_FAILED:
4579                 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4580                         "failed/not supported by firmware\n");
4581
4582                 if (instance->adapter_type != MFI_SERIES)
4583                         megaraid_sas_kill_hba(instance);
4584                 else
4585                         instance->pd_list_not_supported = 1;
4586                 break;
4587         case DCMD_TIMEOUT:
4588
4589                 switch (dcmd_timeout_ocr_possible(instance)) {
4590                 case INITIATE_OCR:
4591                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4592                         /*
4593                          * DCMD failed from AEN path.
4594                          * AEN path already hold reset_mutex to avoid PCI access
4595                          * while OCR is in progress.
4596                          */
4597                         mutex_unlock(&instance->reset_mutex);
4598                         megasas_reset_fusion(instance->host,
4599                                                 MFI_IO_TIMEOUT_OCR);
4600                         mutex_lock(&instance->reset_mutex);
4601                         break;
4602                 case KILL_ADAPTER:
4603                         megaraid_sas_kill_hba(instance);
4604                         break;
4605                 case IGNORE_TIMEOUT:
4606                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d \n",
4607                                 __func__, __LINE__);
4608                         break;
4609                 }
4610
4611                 break;
4612
4613         case DCMD_SUCCESS:
4614                 pd_addr = ci->addr;
4615                 if (megasas_dbg_lvl & LD_PD_DEBUG)
4616                         dev_info(&instance->pdev->dev, "%s, sysPD count: 0x%x\n",
4617                                  __func__, le32_to_cpu(ci->count));
4618
4619                 if ((le32_to_cpu(ci->count) >
4620                         (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL)))
4621                         break;
4622
4623                 memset(instance->local_pd_list, 0,
4624                                 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
4625
4626                 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) {
4627                         instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid     =
4628                                         le16_to_cpu(pd_addr->deviceId);
4629                         instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType       =
4630                                         pd_addr->scsiDevType;
4631                         instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState      =
4632                                         MR_PD_STATE_SYSTEM;
4633                         if (megasas_dbg_lvl & LD_PD_DEBUG)
4634                                 dev_info(&instance->pdev->dev,
4635                                          "PD%d: targetID: 0x%03x deviceType:0x%x\n",
4636                                          pd_index, le16_to_cpu(pd_addr->deviceId),
4637                                          pd_addr->scsiDevType);
4638                         pd_addr++;
4639                 }
4640
4641                 memcpy(instance->pd_list, instance->local_pd_list,
4642                         sizeof(instance->pd_list));
4643                 break;
4644
4645         }
4646
4647         if (ret != DCMD_TIMEOUT)
4648                 megasas_return_cmd(instance, cmd);
4649
4650         return ret;
4651 }
4652
4653 /*
4654  * megasas_get_ld_list_info -   Returns FW's ld_list structure
4655  * @instance:                           Adapter soft state
4656  * @ld_list:                            ld_list structure
4657  *
4658  * Issues an internal command (DCMD) to get the FW's controller PD
4659  * list structure.  This information is mainly used to find out SYSTEM
4660  * supported by the FW.
4661  */
4662 static int
4663 megasas_get_ld_list(struct megasas_instance *instance)
4664 {
4665         int ret = 0, ld_index = 0, ids = 0;
4666         struct megasas_cmd *cmd;
4667         struct megasas_dcmd_frame *dcmd;
4668         struct MR_LD_LIST *ci;
4669         dma_addr_t ci_h = 0;
4670         u32 ld_count;
4671
4672         ci = instance->ld_list_buf;
4673         ci_h = instance->ld_list_buf_h;
4674
4675         cmd = megasas_get_cmd(instance);
4676
4677         if (!cmd) {
4678                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_list: Failed to get cmd\n");
4679                 return -ENOMEM;
4680         }
4681
4682         dcmd = &cmd->frame->dcmd;
4683
4684         memset(ci, 0, sizeof(*ci));
4685         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4686
4687         if (instance->supportmax256vd)
4688                 dcmd->mbox.b[0] = 1;
4689         dcmd->cmd = MFI_CMD_DCMD;
4690         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4691         dcmd->sge_count = 1;
4692         dcmd->flags = MFI_FRAME_DIR_READ;
4693         dcmd->timeout = 0;
4694         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST));
4695         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST);
4696         dcmd->pad_0  = 0;
4697
4698         megasas_set_dma_settings(instance, dcmd, ci_h,
4699                                  sizeof(struct MR_LD_LIST));
4700
4701         if ((instance->adapter_type != MFI_SERIES) &&
4702             !instance->mask_interrupts)
4703                 ret = megasas_issue_blocked_cmd(instance, cmd,
4704                         MFI_IO_TIMEOUT_SECS);
4705         else
4706                 ret = megasas_issue_polled(instance, cmd);
4707
4708         ld_count = le32_to_cpu(ci->ldCount);
4709
4710         switch (ret) {
4711         case DCMD_FAILED:
4712                 megaraid_sas_kill_hba(instance);
4713                 break;
4714         case DCMD_TIMEOUT:
4715
4716                 switch (dcmd_timeout_ocr_possible(instance)) {
4717                 case INITIATE_OCR:
4718                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4719                         /*
4720                          * DCMD failed from AEN path.
4721                          * AEN path already hold reset_mutex to avoid PCI access
4722                          * while OCR is in progress.
4723                          */
4724                         mutex_unlock(&instance->reset_mutex);
4725                         megasas_reset_fusion(instance->host,
4726                                                 MFI_IO_TIMEOUT_OCR);
4727                         mutex_lock(&instance->reset_mutex);
4728                         break;
4729                 case KILL_ADAPTER:
4730                         megaraid_sas_kill_hba(instance);
4731                         break;
4732                 case IGNORE_TIMEOUT:
4733                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4734                                 __func__, __LINE__);
4735                         break;
4736                 }
4737
4738                 break;
4739
4740         case DCMD_SUCCESS:
4741                 if (megasas_dbg_lvl & LD_PD_DEBUG)
4742                         dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n",
4743                                  __func__, ld_count);
4744
4745                 if (ld_count > instance->fw_supported_vd_count)
4746                         break;
4747
4748                 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
4749
4750                 for (ld_index = 0; ld_index < ld_count; ld_index++) {
4751                         if (ci->ldList[ld_index].state != 0) {
4752                                 ids = ci->ldList[ld_index].ref.targetId;
4753                                 instance->ld_ids[ids] = ci->ldList[ld_index].ref.targetId;
4754                                 if (megasas_dbg_lvl & LD_PD_DEBUG)
4755                                         dev_info(&instance->pdev->dev,
4756                                                  "LD%d: targetID: 0x%03x\n",
4757                                                  ld_index, ids);
4758                         }
4759                 }
4760
4761                 break;
4762         }
4763
4764         if (ret != DCMD_TIMEOUT)
4765                 megasas_return_cmd(instance, cmd);
4766
4767         return ret;
4768 }
4769
4770 /**
4771  * megasas_ld_list_query -      Returns FW's ld_list structure
4772  * @instance:                           Adapter soft state
4773  * @query_type:                         ld_list structure type
4774  *
4775  * Issues an internal command (DCMD) to get the FW's controller PD
4776  * list structure.  This information is mainly used to find out SYSTEM
4777  * supported by the FW.
4778  */
4779 static int
4780 megasas_ld_list_query(struct megasas_instance *instance, u8 query_type)
4781 {
4782         int ret = 0, ld_index = 0, ids = 0;
4783         struct megasas_cmd *cmd;
4784         struct megasas_dcmd_frame *dcmd;
4785         struct MR_LD_TARGETID_LIST *ci;
4786         dma_addr_t ci_h = 0;
4787         u32 tgtid_count;
4788
4789         ci = instance->ld_targetid_list_buf;
4790         ci_h = instance->ld_targetid_list_buf_h;
4791
4792         cmd = megasas_get_cmd(instance);
4793
4794         if (!cmd) {
4795                 dev_warn(&instance->pdev->dev,
4796                          "megasas_ld_list_query: Failed to get cmd\n");
4797                 return -ENOMEM;
4798         }
4799
4800         dcmd = &cmd->frame->dcmd;
4801
4802         memset(ci, 0, sizeof(*ci));
4803         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4804
4805         dcmd->mbox.b[0] = query_type;
4806         if (instance->supportmax256vd)
4807                 dcmd->mbox.b[2] = 1;
4808
4809         dcmd->cmd = MFI_CMD_DCMD;
4810         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4811         dcmd->sge_count = 1;
4812         dcmd->flags = MFI_FRAME_DIR_READ;
4813         dcmd->timeout = 0;
4814         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
4815         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY);
4816         dcmd->pad_0  = 0;
4817
4818         megasas_set_dma_settings(instance, dcmd, ci_h,
4819                                  sizeof(struct MR_LD_TARGETID_LIST));
4820
4821         if ((instance->adapter_type != MFI_SERIES) &&
4822             !instance->mask_interrupts)
4823                 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4824         else
4825                 ret = megasas_issue_polled(instance, cmd);
4826
4827         switch (ret) {
4828         case DCMD_FAILED:
4829                 dev_info(&instance->pdev->dev,
4830                         "DCMD not supported by firmware - %s %d\n",
4831                                 __func__, __LINE__);
4832                 ret = megasas_get_ld_list(instance);
4833                 break;
4834         case DCMD_TIMEOUT:
4835                 switch (dcmd_timeout_ocr_possible(instance)) {
4836                 case INITIATE_OCR:
4837                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4838                         /*
4839                          * DCMD failed from AEN path.
4840                          * AEN path already hold reset_mutex to avoid PCI access
4841                          * while OCR is in progress.
4842                          */
4843                         mutex_unlock(&instance->reset_mutex);
4844                         megasas_reset_fusion(instance->host,
4845                                                 MFI_IO_TIMEOUT_OCR);
4846                         mutex_lock(&instance->reset_mutex);
4847                         break;
4848                 case KILL_ADAPTER:
4849                         megaraid_sas_kill_hba(instance);
4850                         break;
4851                 case IGNORE_TIMEOUT:
4852                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4853                                 __func__, __LINE__);
4854                         break;
4855                 }
4856
4857                 break;
4858         case DCMD_SUCCESS:
4859                 tgtid_count = le32_to_cpu(ci->count);
4860
4861                 if (megasas_dbg_lvl & LD_PD_DEBUG)
4862                         dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n",
4863                                  __func__, tgtid_count);
4864
4865                 if ((tgtid_count > (instance->fw_supported_vd_count)))
4866                         break;
4867
4868                 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
4869                 for (ld_index = 0; ld_index < tgtid_count; ld_index++) {
4870                         ids = ci->targetId[ld_index];
4871                         instance->ld_ids[ids] = ci->targetId[ld_index];
4872                         if (megasas_dbg_lvl & LD_PD_DEBUG)
4873                                 dev_info(&instance->pdev->dev, "LD%d: targetID: 0x%03x\n",
4874                                          ld_index, ci->targetId[ld_index]);
4875                 }
4876
4877                 break;
4878         }
4879
4880         if (ret != DCMD_TIMEOUT)
4881                 megasas_return_cmd(instance, cmd);
4882
4883         return ret;
4884 }
4885
4886 /**
4887  * dcmd.opcode            - MR_DCMD_CTRL_DEVICE_LIST_GET
4888  * dcmd.mbox              - reserved
4889  * dcmd.sge IN            - ptr to return MR_HOST_DEVICE_LIST structure
4890  * Desc:    This DCMD will return the combined device list
4891  * Status:  MFI_STAT_OK - List returned successfully
4892  *          MFI_STAT_INVALID_CMD - Firmware support for the feature has been
4893  *                                 disabled
4894  * @instance:                   Adapter soft state
4895  * @is_probe:                   Driver probe check
4896  * Return:                      0 if DCMD succeeded
4897  *                               non-zero if failed
4898  */
4899 static int
4900 megasas_host_device_list_query(struct megasas_instance *instance,
4901                                bool is_probe)
4902 {
4903         int ret, i, target_id;
4904         struct megasas_cmd *cmd;
4905         struct megasas_dcmd_frame *dcmd;
4906         struct MR_HOST_DEVICE_LIST *ci;
4907         u32 count;
4908         dma_addr_t ci_h;
4909
4910         ci = instance->host_device_list_buf;
4911         ci_h = instance->host_device_list_buf_h;
4912
4913         cmd = megasas_get_cmd(instance);
4914
4915         if (!cmd) {
4916                 dev_warn(&instance->pdev->dev,
4917                          "%s: failed to get cmd\n",
4918                          __func__);
4919                 return -ENOMEM;
4920         }
4921
4922         dcmd = &cmd->frame->dcmd;
4923
4924         memset(ci, 0, sizeof(*ci));
4925         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4926
4927         dcmd->mbox.b[0] = is_probe ? 0 : 1;
4928         dcmd->cmd = MFI_CMD_DCMD;
4929         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4930         dcmd->sge_count = 1;
4931         dcmd->flags = MFI_FRAME_DIR_READ;
4932         dcmd->timeout = 0;
4933         dcmd->pad_0 = 0;
4934         dcmd->data_xfer_len = cpu_to_le32(HOST_DEVICE_LIST_SZ);
4935         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_DEVICE_LIST_GET);
4936
4937         megasas_set_dma_settings(instance, dcmd, ci_h, HOST_DEVICE_LIST_SZ);
4938
4939         if (!instance->mask_interrupts) {
4940                 ret = megasas_issue_blocked_cmd(instance, cmd,
4941                                                 MFI_IO_TIMEOUT_SECS);
4942         } else {
4943                 ret = megasas_issue_polled(instance, cmd);
4944                 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4945         }
4946
4947         switch (ret) {
4948         case DCMD_SUCCESS:
4949                 /* Fill the internal pd_list and ld_ids array based on
4950                  * targetIds returned by FW
4951                  */
4952                 count = le32_to_cpu(ci->count);
4953
4954                 if (count > (MEGASAS_MAX_PD + MAX_LOGICAL_DRIVES_EXT))
4955                         break;
4956
4957                 if (megasas_dbg_lvl & LD_PD_DEBUG)
4958                         dev_info(&instance->pdev->dev, "%s, Device count: 0x%x\n",
4959                                  __func__, count);
4960
4961                 memset(instance->local_pd_list, 0,
4962                        MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
4963                 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
4964                 for (i = 0; i < count; i++) {
4965                         target_id = le16_to_cpu(ci->host_device_list[i].target_id);
4966                         if (ci->host_device_list[i].flags.u.bits.is_sys_pd) {
4967                                 instance->local_pd_list[target_id].tid = target_id;
4968                                 instance->local_pd_list[target_id].driveType =
4969                                                 ci->host_device_list[i].scsi_type;
4970                                 instance->local_pd_list[target_id].driveState =
4971                                                 MR_PD_STATE_SYSTEM;
4972                                 if (megasas_dbg_lvl & LD_PD_DEBUG)
4973                                         dev_info(&instance->pdev->dev,
4974                                                  "Device %d: PD targetID: 0x%03x deviceType:0x%x\n",
4975                                                  i, target_id, ci->host_device_list[i].scsi_type);
4976                         } else {
4977                                 instance->ld_ids[target_id] = target_id;
4978                                 if (megasas_dbg_lvl & LD_PD_DEBUG)
4979                                         dev_info(&instance->pdev->dev,
4980                                                  "Device %d: LD targetID: 0x%03x\n",
4981                                                  i, target_id);
4982                         }
4983                 }
4984
4985                 memcpy(instance->pd_list, instance->local_pd_list,
4986                        sizeof(instance->pd_list));
4987                 break;
4988
4989         case DCMD_TIMEOUT:
4990                 switch (dcmd_timeout_ocr_possible(instance)) {
4991                 case INITIATE_OCR:
4992                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4993                         mutex_unlock(&instance->reset_mutex);
4994                         megasas_reset_fusion(instance->host,
4995                                 MFI_IO_TIMEOUT_OCR);
4996                         mutex_lock(&instance->reset_mutex);
4997                         break;
4998                 case KILL_ADAPTER:
4999                         megaraid_sas_kill_hba(instance);
5000                         break;
5001                 case IGNORE_TIMEOUT:
5002                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5003                                  __func__, __LINE__);
5004                         break;
5005                 }
5006                 break;
5007         case DCMD_FAILED:
5008                 dev_err(&instance->pdev->dev,
5009                         "%s: MR_DCMD_CTRL_DEVICE_LIST_GET failed\n",
5010                         __func__);
5011                 break;
5012         }
5013
5014         if (ret != DCMD_TIMEOUT)
5015                 megasas_return_cmd(instance, cmd);
5016
5017         return ret;
5018 }
5019
5020 /*
5021  * megasas_update_ext_vd_details : Update details w.r.t Extended VD
5022  * instance                      : Controller's instance
5023 */
5024 static void megasas_update_ext_vd_details(struct megasas_instance *instance)
5025 {
5026         struct fusion_context *fusion;
5027         u32 ventura_map_sz = 0;
5028
5029         fusion = instance->ctrl_context;
5030         /* For MFI based controllers return dummy success */
5031         if (!fusion)
5032                 return;
5033
5034         instance->supportmax256vd =
5035                 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs;
5036         /* Below is additional check to address future FW enhancement */
5037         if (instance->ctrl_info_buf->max_lds > 64)
5038                 instance->supportmax256vd = 1;
5039
5040         instance->drv_supported_vd_count = MEGASAS_MAX_LD_CHANNELS
5041                                         * MEGASAS_MAX_DEV_PER_CHANNEL;
5042         instance->drv_supported_pd_count = MEGASAS_MAX_PD_CHANNELS
5043                                         * MEGASAS_MAX_DEV_PER_CHANNEL;
5044         if (instance->supportmax256vd) {
5045                 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES_EXT;
5046                 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
5047         } else {
5048                 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
5049                 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
5050         }
5051
5052         dev_info(&instance->pdev->dev,
5053                 "FW provided supportMaxExtLDs: %d\tmax_lds: %d\n",
5054                 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs ? 1 : 0,
5055                 instance->ctrl_info_buf->max_lds);
5056
5057         if (instance->max_raid_mapsize) {
5058                 ventura_map_sz = instance->max_raid_mapsize *
5059                                                 MR_MIN_MAP_SIZE; /* 64k */
5060                 fusion->current_map_sz = ventura_map_sz;
5061                 fusion->max_map_sz = ventura_map_sz;
5062         } else {
5063                 fusion->old_map_sz =  sizeof(struct MR_FW_RAID_MAP) +
5064                                         (sizeof(struct MR_LD_SPAN_MAP) *
5065                                         (instance->fw_supported_vd_count - 1));
5066                 fusion->new_map_sz =  sizeof(struct MR_FW_RAID_MAP_EXT);
5067
5068                 fusion->max_map_sz =
5069                         max(fusion->old_map_sz, fusion->new_map_sz);
5070
5071                 if (instance->supportmax256vd)
5072                         fusion->current_map_sz = fusion->new_map_sz;
5073                 else
5074                         fusion->current_map_sz = fusion->old_map_sz;
5075         }
5076         /* irrespective of FW raid maps, driver raid map is constant */
5077         fusion->drv_map_sz = sizeof(struct MR_DRV_RAID_MAP_ALL);
5078 }
5079
5080 /*
5081  * dcmd.opcode                - MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES
5082  * dcmd.hdr.length            - number of bytes to read
5083  * dcmd.sge                   - Ptr to MR_SNAPDUMP_PROPERTIES
5084  * Desc:                         Fill in snapdump properties
5085  * Status:                       MFI_STAT_OK- Command successful
5086  */
5087 void megasas_get_snapdump_properties(struct megasas_instance *instance)
5088 {
5089         int ret = 0;
5090         struct megasas_cmd *cmd;
5091         struct megasas_dcmd_frame *dcmd;
5092         struct MR_SNAPDUMP_PROPERTIES *ci;
5093         dma_addr_t ci_h = 0;
5094
5095         ci = instance->snapdump_prop;
5096         ci_h = instance->snapdump_prop_h;
5097
5098         if (!ci)
5099                 return;
5100
5101         cmd = megasas_get_cmd(instance);
5102
5103         if (!cmd) {
5104                 dev_dbg(&instance->pdev->dev, "Failed to get a free cmd\n");
5105                 return;
5106         }
5107
5108         dcmd = &cmd->frame->dcmd;
5109
5110         memset(ci, 0, sizeof(*ci));
5111         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5112
5113         dcmd->cmd = MFI_CMD_DCMD;
5114         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5115         dcmd->sge_count = 1;
5116         dcmd->flags = MFI_FRAME_DIR_READ;
5117         dcmd->timeout = 0;
5118         dcmd->pad_0 = 0;
5119         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_SNAPDUMP_PROPERTIES));
5120         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES);
5121
5122         megasas_set_dma_settings(instance, dcmd, ci_h,
5123                                  sizeof(struct MR_SNAPDUMP_PROPERTIES));
5124
5125         if (!instance->mask_interrupts) {
5126                 ret = megasas_issue_blocked_cmd(instance, cmd,
5127                                                 MFI_IO_TIMEOUT_SECS);
5128         } else {
5129                 ret = megasas_issue_polled(instance, cmd);
5130                 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5131         }
5132
5133         switch (ret) {
5134         case DCMD_SUCCESS:
5135                 instance->snapdump_wait_time =
5136                         min_t(u8, ci->trigger_min_num_sec_before_ocr,
5137                                 MEGASAS_MAX_SNAP_DUMP_WAIT_TIME);
5138                 break;
5139
5140         case DCMD_TIMEOUT:
5141                 switch (dcmd_timeout_ocr_possible(instance)) {
5142                 case INITIATE_OCR:
5143                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5144                         mutex_unlock(&instance->reset_mutex);
5145                         megasas_reset_fusion(instance->host,
5146                                 MFI_IO_TIMEOUT_OCR);
5147                         mutex_lock(&instance->reset_mutex);
5148                         break;
5149                 case KILL_ADAPTER:
5150                         megaraid_sas_kill_hba(instance);
5151                         break;
5152                 case IGNORE_TIMEOUT:
5153                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5154                                 __func__, __LINE__);
5155                         break;
5156                 }
5157         }
5158
5159         if (ret != DCMD_TIMEOUT)
5160                 megasas_return_cmd(instance, cmd);
5161 }
5162
5163 /**
5164  * megasas_get_controller_info -        Returns FW's controller structure
5165  * @instance:                           Adapter soft state
5166  *
5167  * Issues an internal command (DCMD) to get the FW's controller structure.
5168  * This information is mainly used to find out the maximum IO transfer per
5169  * command supported by the FW.
5170  */
5171 int
5172 megasas_get_ctrl_info(struct megasas_instance *instance)
5173 {
5174         int ret = 0;
5175         struct megasas_cmd *cmd;
5176         struct megasas_dcmd_frame *dcmd;
5177         struct megasas_ctrl_info *ci;
5178         dma_addr_t ci_h = 0;
5179
5180         ci = instance->ctrl_info_buf;
5181         ci_h = instance->ctrl_info_buf_h;
5182
5183         cmd = megasas_get_cmd(instance);
5184
5185         if (!cmd) {
5186                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a free cmd\n");
5187                 return -ENOMEM;
5188         }
5189
5190         dcmd = &cmd->frame->dcmd;
5191
5192         memset(ci, 0, sizeof(*ci));
5193         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5194
5195         dcmd->cmd = MFI_CMD_DCMD;
5196         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5197         dcmd->sge_count = 1;
5198         dcmd->flags = MFI_FRAME_DIR_READ;
5199         dcmd->timeout = 0;
5200         dcmd->pad_0 = 0;
5201         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info));
5202         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO);
5203         dcmd->mbox.b[0] = 1;
5204
5205         megasas_set_dma_settings(instance, dcmd, ci_h,
5206                                  sizeof(struct megasas_ctrl_info));
5207
5208         if ((instance->adapter_type != MFI_SERIES) &&
5209             !instance->mask_interrupts) {
5210                 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
5211         } else {
5212                 ret = megasas_issue_polled(instance, cmd);
5213                 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5214         }
5215
5216         switch (ret) {
5217         case DCMD_SUCCESS:
5218                 /* Save required controller information in
5219                  * CPU endianness format.
5220                  */
5221                 le32_to_cpus((u32 *)&ci->properties.OnOffProperties);
5222                 le16_to_cpus((u16 *)&ci->properties.on_off_properties2);
5223                 le32_to_cpus((u32 *)&ci->adapterOperations2);
5224                 le32_to_cpus((u32 *)&ci->adapterOperations3);
5225                 le16_to_cpus((u16 *)&ci->adapter_operations4);
5226                 le32_to_cpus((u32 *)&ci->adapter_operations5);
5227
5228                 /* Update the latest Ext VD info.
5229                  * From Init path, store current firmware details.
5230                  * From OCR path, detect any firmware properties changes.
5231                  * in case of Firmware upgrade without system reboot.
5232                  */
5233                 megasas_update_ext_vd_details(instance);
5234                 instance->support_seqnum_jbod_fp =
5235                         ci->adapterOperations3.useSeqNumJbodFP;
5236                 instance->support_morethan256jbod =
5237                         ci->adapter_operations4.support_pd_map_target_id;
5238                 instance->support_nvme_passthru =
5239                         ci->adapter_operations4.support_nvme_passthru;
5240                 instance->support_pci_lane_margining =
5241                         ci->adapter_operations5.support_pci_lane_margining;
5242                 instance->task_abort_tmo = ci->TaskAbortTO;
5243                 instance->max_reset_tmo = ci->MaxResetTO;
5244
5245                 /*Check whether controller is iMR or MR */
5246                 instance->is_imr = (ci->memory_size ? 0 : 1);
5247
5248                 instance->snapdump_wait_time =
5249                         (ci->properties.on_off_properties2.enable_snap_dump ?
5250                          MEGASAS_DEFAULT_SNAP_DUMP_WAIT_TIME : 0);
5251
5252                 instance->enable_fw_dev_list =
5253                         ci->properties.on_off_properties2.enable_fw_dev_list;
5254
5255                 dev_info(&instance->pdev->dev,
5256                         "controller type\t: %s(%dMB)\n",
5257                         instance->is_imr ? "iMR" : "MR",
5258                         le16_to_cpu(ci->memory_size));
5259
5260                 instance->disableOnlineCtrlReset =
5261                         ci->properties.OnOffProperties.disableOnlineCtrlReset;
5262                 instance->secure_jbod_support =
5263                         ci->adapterOperations3.supportSecurityonJBOD;
5264                 dev_info(&instance->pdev->dev, "Online Controller Reset(OCR)\t: %s\n",
5265                         instance->disableOnlineCtrlReset ? "Disabled" : "Enabled");
5266                 dev_info(&instance->pdev->dev, "Secure JBOD support\t: %s\n",
5267                         instance->secure_jbod_support ? "Yes" : "No");
5268                 dev_info(&instance->pdev->dev, "NVMe passthru support\t: %s\n",
5269                          instance->support_nvme_passthru ? "Yes" : "No");
5270                 dev_info(&instance->pdev->dev,
5271                          "FW provided TM TaskAbort/Reset timeout\t: %d secs/%d secs\n",
5272                          instance->task_abort_tmo, instance->max_reset_tmo);
5273                 dev_info(&instance->pdev->dev, "JBOD sequence map support\t: %s\n",
5274                          instance->support_seqnum_jbod_fp ? "Yes" : "No");
5275                 dev_info(&instance->pdev->dev, "PCI Lane Margining support\t: %s\n",
5276                          instance->support_pci_lane_margining ? "Yes" : "No");
5277
5278                 break;
5279
5280         case DCMD_TIMEOUT:
5281                 switch (dcmd_timeout_ocr_possible(instance)) {
5282                 case INITIATE_OCR:
5283                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5284                         mutex_unlock(&instance->reset_mutex);
5285                         megasas_reset_fusion(instance->host,
5286                                 MFI_IO_TIMEOUT_OCR);
5287                         mutex_lock(&instance->reset_mutex);
5288                         break;
5289                 case KILL_ADAPTER:
5290                         megaraid_sas_kill_hba(instance);
5291                         break;
5292                 case IGNORE_TIMEOUT:
5293                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5294                                 __func__, __LINE__);
5295                         break;
5296                 }
5297                 break;
5298         case DCMD_FAILED:
5299                 megaraid_sas_kill_hba(instance);
5300                 break;
5301
5302         }
5303
5304         if (ret != DCMD_TIMEOUT)
5305                 megasas_return_cmd(instance, cmd);
5306
5307         return ret;
5308 }
5309
5310 /*
5311  * megasas_set_crash_dump_params -      Sends address of crash dump DMA buffer
5312  *                                      to firmware
5313  *
5314  * @instance:                           Adapter soft state
5315  * @crash_buf_state             -       tell FW to turn ON/OFF crash dump feature
5316                                         MR_CRASH_BUF_TURN_OFF = 0
5317                                         MR_CRASH_BUF_TURN_ON = 1
5318  * @return 0 on success non-zero on failure.
5319  * Issues an internal command (DCMD) to set parameters for crash dump feature.
5320  * Driver will send address of crash dump DMA buffer and set mbox to tell FW
5321  * that driver supports crash dump feature. This DCMD will be sent only if
5322  * crash dump feature is supported by the FW.
5323  *
5324  */
5325 int megasas_set_crash_dump_params(struct megasas_instance *instance,
5326         u8 crash_buf_state)
5327 {
5328         int ret = 0;
5329         struct megasas_cmd *cmd;
5330         struct megasas_dcmd_frame *dcmd;
5331
5332         cmd = megasas_get_cmd(instance);
5333
5334         if (!cmd) {
5335                 dev_err(&instance->pdev->dev, "Failed to get a free cmd\n");
5336                 return -ENOMEM;
5337         }
5338
5339
5340         dcmd = &cmd->frame->dcmd;
5341
5342         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5343         dcmd->mbox.b[0] = crash_buf_state;
5344         dcmd->cmd = MFI_CMD_DCMD;
5345         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5346         dcmd->sge_count = 1;
5347         dcmd->flags = MFI_FRAME_DIR_NONE;
5348         dcmd->timeout = 0;
5349         dcmd->pad_0 = 0;
5350         dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE);
5351         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS);
5352
5353         megasas_set_dma_settings(instance, dcmd, instance->crash_dump_h,
5354                                  CRASH_DMA_BUF_SIZE);
5355
5356         if ((instance->adapter_type != MFI_SERIES) &&
5357             !instance->mask_interrupts)
5358                 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
5359         else
5360                 ret = megasas_issue_polled(instance, cmd);
5361
5362         if (ret == DCMD_TIMEOUT) {
5363                 switch (dcmd_timeout_ocr_possible(instance)) {
5364                 case INITIATE_OCR:
5365                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5366                         megasas_reset_fusion(instance->host,
5367                                         MFI_IO_TIMEOUT_OCR);
5368                         break;
5369                 case KILL_ADAPTER:
5370                         megaraid_sas_kill_hba(instance);
5371                         break;
5372                 case IGNORE_TIMEOUT:
5373                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5374                                 __func__, __LINE__);
5375                         break;
5376                 }
5377         } else
5378                 megasas_return_cmd(instance, cmd);
5379
5380         return ret;
5381 }
5382
5383 /**
5384  * megasas_issue_init_mfi -     Initializes the FW
5385  * @instance:           Adapter soft state
5386  *
5387  * Issues the INIT MFI cmd
5388  */
5389 static int
5390 megasas_issue_init_mfi(struct megasas_instance *instance)
5391 {
5392         __le32 context;
5393         struct megasas_cmd *cmd;
5394         struct megasas_init_frame *init_frame;
5395         struct megasas_init_queue_info *initq_info;
5396         dma_addr_t init_frame_h;
5397         dma_addr_t initq_info_h;
5398
5399         /*
5400          * Prepare a init frame. Note the init frame points to queue info
5401          * structure. Each frame has SGL allocated after first 64 bytes. For
5402          * this frame - since we don't need any SGL - we use SGL's space as
5403          * queue info structure
5404          *
5405          * We will not get a NULL command below. We just created the pool.
5406          */
5407         cmd = megasas_get_cmd(instance);
5408
5409         init_frame = (struct megasas_init_frame *)cmd->frame;
5410         initq_info = (struct megasas_init_queue_info *)
5411                 ((unsigned long)init_frame + 64);
5412
5413         init_frame_h = cmd->frame_phys_addr;
5414         initq_info_h = init_frame_h + 64;
5415
5416         context = init_frame->context;
5417         memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
5418         memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
5419         init_frame->context = context;
5420
5421         initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1);
5422         initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h);
5423
5424         initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h);
5425         initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h);
5426
5427         init_frame->cmd = MFI_CMD_INIT;
5428         init_frame->cmd_status = MFI_STAT_INVALID_STATUS;
5429         init_frame->queue_info_new_phys_addr_lo =
5430                 cpu_to_le32(lower_32_bits(initq_info_h));
5431         init_frame->queue_info_new_phys_addr_hi =
5432                 cpu_to_le32(upper_32_bits(initq_info_h));
5433
5434         init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info));
5435
5436         /*
5437          * disable the intr before firing the init frame to FW
5438          */
5439         instance->instancet->disable_intr(instance);
5440
5441         /*
5442          * Issue the init frame in polled mode
5443          */
5444
5445         if (megasas_issue_polled(instance, cmd)) {
5446                 dev_err(&instance->pdev->dev, "Failed to init firmware\n");
5447                 megasas_return_cmd(instance, cmd);
5448                 goto fail_fw_init;
5449         }
5450
5451         megasas_return_cmd(instance, cmd);
5452
5453         return 0;
5454
5455 fail_fw_init:
5456         return -EINVAL;
5457 }
5458
5459 static u32
5460 megasas_init_adapter_mfi(struct megasas_instance *instance)
5461 {
5462         u32 context_sz;
5463         u32 reply_q_sz;
5464
5465         /*
5466          * Get various operational parameters from status register
5467          */
5468         instance->max_fw_cmds = instance->instancet->read_fw_status_reg(instance) & 0x00FFFF;
5469         /*
5470          * Reduce the max supported cmds by 1. This is to ensure that the
5471          * reply_q_sz (1 more than the max cmd that driver may send)
5472          * does not exceed max cmds that the FW can support
5473          */
5474         instance->max_fw_cmds = instance->max_fw_cmds-1;
5475         instance->max_mfi_cmds = instance->max_fw_cmds;
5476         instance->max_num_sge = (instance->instancet->read_fw_status_reg(instance) & 0xFF0000) >>
5477                                         0x10;
5478         /*
5479          * For MFI skinny adapters, MEGASAS_SKINNY_INT_CMDS commands
5480          * are reserved for IOCTL + driver's internal DCMDs.
5481          */
5482         if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
5483                 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
5484                 instance->max_scsi_cmds = (instance->max_fw_cmds -
5485                         MEGASAS_SKINNY_INT_CMDS);
5486                 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
5487         } else {
5488                 instance->max_scsi_cmds = (instance->max_fw_cmds -
5489                         MEGASAS_INT_CMDS);
5490                 sema_init(&instance->ioctl_sem, (MEGASAS_MFI_IOCTL_CMDS));
5491         }
5492
5493         instance->cur_can_queue = instance->max_scsi_cmds;
5494         /*
5495          * Create a pool of commands
5496          */
5497         if (megasas_alloc_cmds(instance))
5498                 goto fail_alloc_cmds;
5499
5500         /*
5501          * Allocate memory for reply queue. Length of reply queue should
5502          * be _one_ more than the maximum commands handled by the firmware.
5503          *
5504          * Note: When FW completes commands, it places corresponding contex
5505          * values in this circular reply queue. This circular queue is a fairly
5506          * typical producer-consumer queue. FW is the producer (of completed
5507          * commands) and the driver is the consumer.
5508          */
5509         context_sz = sizeof(u32);
5510         reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
5511
5512         instance->reply_queue = dma_alloc_coherent(&instance->pdev->dev,
5513                         reply_q_sz, &instance->reply_queue_h, GFP_KERNEL);
5514
5515         if (!instance->reply_queue) {
5516                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Out of DMA mem for reply queue\n");
5517                 goto fail_reply_queue;
5518         }
5519
5520         if (megasas_issue_init_mfi(instance))
5521                 goto fail_fw_init;
5522
5523         if (megasas_get_ctrl_info(instance)) {
5524                 dev_err(&instance->pdev->dev, "(%d): Could get controller info "
5525                         "Fail from %s %d\n", instance->unique_id,
5526                         __func__, __LINE__);
5527                 goto fail_fw_init;
5528         }
5529
5530         instance->fw_support_ieee = 0;
5531         instance->fw_support_ieee =
5532                 (instance->instancet->read_fw_status_reg(instance) &
5533                 0x04000000);
5534
5535         dev_notice(&instance->pdev->dev, "megasas_init_mfi: fw_support_ieee=%d",
5536                         instance->fw_support_ieee);
5537
5538         if (instance->fw_support_ieee)
5539                 instance->flag_ieee = 1;
5540
5541         return 0;
5542
5543 fail_fw_init:
5544
5545         dma_free_coherent(&instance->pdev->dev, reply_q_sz,
5546                             instance->reply_queue, instance->reply_queue_h);
5547 fail_reply_queue:
5548         megasas_free_cmds(instance);
5549
5550 fail_alloc_cmds:
5551         return 1;
5552 }
5553
5554 static
5555 void megasas_setup_irq_poll(struct megasas_instance *instance)
5556 {
5557         struct megasas_irq_context *irq_ctx;
5558         u32 count, i;
5559
5560         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
5561
5562         /* Initialize IRQ poll */
5563         for (i = 0; i < count; i++) {
5564                 irq_ctx = &instance->irq_context[i];
5565                 irq_ctx->os_irq = pci_irq_vector(instance->pdev, i);
5566                 irq_ctx->irq_poll_scheduled = false;
5567                 irq_poll_init(&irq_ctx->irqpoll,
5568                               instance->threshold_reply_count,
5569                               megasas_irqpoll);
5570         }
5571 }
5572
5573 /*
5574  * megasas_setup_irqs_ioapic -          register legacy interrupts.
5575  * @instance:                           Adapter soft state
5576  *
5577  * Do not enable interrupt, only setup ISRs.
5578  *
5579  * Return 0 on success.
5580  */
5581 static int
5582 megasas_setup_irqs_ioapic(struct megasas_instance *instance)
5583 {
5584         struct pci_dev *pdev;
5585
5586         pdev = instance->pdev;
5587         instance->irq_context[0].instance = instance;
5588         instance->irq_context[0].MSIxIndex = 0;
5589         snprintf(instance->irq_context->name, MEGASAS_MSIX_NAME_LEN, "%s%u",
5590                 "megasas", instance->host->host_no);
5591         if (request_irq(pci_irq_vector(pdev, 0),
5592                         instance->instancet->service_isr, IRQF_SHARED,
5593                         instance->irq_context->name, &instance->irq_context[0])) {
5594                 dev_err(&instance->pdev->dev,
5595                                 "Failed to register IRQ from %s %d\n",
5596                                 __func__, __LINE__);
5597                 return -1;
5598         }
5599         instance->perf_mode = MR_LATENCY_PERF_MODE;
5600         instance->low_latency_index_start = 0;
5601         return 0;
5602 }
5603
5604 /**
5605  * megasas_setup_irqs_msix -            register MSI-x interrupts.
5606  * @instance:                           Adapter soft state
5607  * @is_probe:                           Driver probe check
5608  *
5609  * Do not enable interrupt, only setup ISRs.
5610  *
5611  * Return 0 on success.
5612  */
5613 static int
5614 megasas_setup_irqs_msix(struct megasas_instance *instance, u8 is_probe)
5615 {
5616         int i, j;
5617         struct pci_dev *pdev;
5618
5619         pdev = instance->pdev;
5620
5621         /* Try MSI-x */
5622         for (i = 0; i < instance->msix_vectors; i++) {
5623                 instance->irq_context[i].instance = instance;
5624                 instance->irq_context[i].MSIxIndex = i;
5625                 snprintf(instance->irq_context[i].name, MEGASAS_MSIX_NAME_LEN, "%s%u-msix%u",
5626                         "megasas", instance->host->host_no, i);
5627                 if (request_irq(pci_irq_vector(pdev, i),
5628                         instance->instancet->service_isr, 0, instance->irq_context[i].name,
5629                         &instance->irq_context[i])) {
5630                         dev_err(&instance->pdev->dev,
5631                                 "Failed to register IRQ for vector %d.\n", i);
5632                         for (j = 0; j < i; j++) {
5633                                 if (j < instance->low_latency_index_start)
5634                                         irq_set_affinity_hint(
5635                                                 pci_irq_vector(pdev, j), NULL);
5636                                 free_irq(pci_irq_vector(pdev, j),
5637                                          &instance->irq_context[j]);
5638                         }
5639                         /* Retry irq register for IO_APIC*/
5640                         instance->msix_vectors = 0;
5641                         instance->msix_load_balance = false;
5642                         if (is_probe) {
5643                                 pci_free_irq_vectors(instance->pdev);
5644                                 return megasas_setup_irqs_ioapic(instance);
5645                         } else {
5646                                 return -1;
5647                         }
5648                 }
5649         }
5650
5651         return 0;
5652 }
5653
5654 /*
5655  * megasas_destroy_irqs-                unregister interrupts.
5656  * @instance:                           Adapter soft state
5657  * return:                              void
5658  */
5659 static void
5660 megasas_destroy_irqs(struct megasas_instance *instance) {
5661
5662         int i;
5663         int count;
5664         struct megasas_irq_context *irq_ctx;
5665
5666         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
5667         if (instance->adapter_type != MFI_SERIES) {
5668                 for (i = 0; i < count; i++) {
5669                         irq_ctx = &instance->irq_context[i];
5670                         irq_poll_disable(&irq_ctx->irqpoll);
5671                 }
5672         }
5673
5674         if (instance->msix_vectors)
5675                 for (i = 0; i < instance->msix_vectors; i++) {
5676                         if (i < instance->low_latency_index_start)
5677                                 irq_set_affinity_hint(
5678                                     pci_irq_vector(instance->pdev, i), NULL);
5679                         free_irq(pci_irq_vector(instance->pdev, i),
5680                                  &instance->irq_context[i]);
5681                 }
5682         else
5683                 free_irq(pci_irq_vector(instance->pdev, 0),
5684                          &instance->irq_context[0]);
5685 }
5686
5687 /**
5688  * megasas_setup_jbod_map -     setup jbod map for FP seq_number.
5689  * @instance:                           Adapter soft state
5690  *
5691  * Return 0 on success.
5692  */
5693 void
5694 megasas_setup_jbod_map(struct megasas_instance *instance)
5695 {
5696         int i;
5697         struct fusion_context *fusion = instance->ctrl_context;
5698         u32 pd_seq_map_sz;
5699
5700         pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
5701                 (sizeof(struct MR_PD_CFG_SEQ) * (MAX_PHYSICAL_DEVICES - 1));
5702
5703         instance->use_seqnum_jbod_fp =
5704                 instance->support_seqnum_jbod_fp;
5705         if (reset_devices || !fusion ||
5706                 !instance->support_seqnum_jbod_fp) {
5707                 dev_info(&instance->pdev->dev,
5708                         "JBOD sequence map is disabled %s %d\n",
5709                         __func__, __LINE__);
5710                 instance->use_seqnum_jbod_fp = false;
5711                 return;
5712         }
5713
5714         if (fusion->pd_seq_sync[0])
5715                 goto skip_alloc;
5716
5717         for (i = 0; i < JBOD_MAPS_COUNT; i++) {
5718                 fusion->pd_seq_sync[i] = dma_alloc_coherent
5719                         (&instance->pdev->dev, pd_seq_map_sz,
5720                         &fusion->pd_seq_phys[i], GFP_KERNEL);
5721                 if (!fusion->pd_seq_sync[i]) {
5722                         dev_err(&instance->pdev->dev,
5723                                 "Failed to allocate memory from %s %d\n",
5724                                 __func__, __LINE__);
5725                         if (i == 1) {
5726                                 dma_free_coherent(&instance->pdev->dev,
5727                                         pd_seq_map_sz, fusion->pd_seq_sync[0],
5728                                         fusion->pd_seq_phys[0]);
5729                                 fusion->pd_seq_sync[0] = NULL;
5730                         }
5731                         instance->use_seqnum_jbod_fp = false;
5732                         return;
5733                 }
5734         }
5735
5736 skip_alloc:
5737         if (!megasas_sync_pd_seq_num(instance, false) &&
5738                 !megasas_sync_pd_seq_num(instance, true))
5739                 instance->use_seqnum_jbod_fp = true;
5740         else
5741                 instance->use_seqnum_jbod_fp = false;
5742 }
5743
5744 static void megasas_setup_reply_map(struct megasas_instance *instance)
5745 {
5746         const struct cpumask *mask;
5747         unsigned int queue, cpu, low_latency_index_start;
5748
5749         low_latency_index_start = instance->low_latency_index_start;
5750
5751         for (queue = low_latency_index_start; queue < instance->msix_vectors; queue++) {
5752                 mask = pci_irq_get_affinity(instance->pdev, queue);
5753                 if (!mask)
5754                         goto fallback;
5755
5756                 for_each_cpu(cpu, mask)
5757                         instance->reply_map[cpu] = queue;
5758         }
5759         return;
5760
5761 fallback:
5762         queue = low_latency_index_start;
5763         for_each_possible_cpu(cpu) {
5764                 instance->reply_map[cpu] = queue;
5765                 if (queue == (instance->msix_vectors - 1))
5766                         queue = low_latency_index_start;
5767                 else
5768                         queue++;
5769         }
5770 }
5771
5772 /**
5773  * megasas_get_device_list -    Get the PD and LD device list from FW.
5774  * @instance:                   Adapter soft state
5775  * @return:                     Success or failure
5776  *
5777  * Issue DCMDs to Firmware to get the PD and LD list.
5778  * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination
5779  * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list.
5780  */
5781 static
5782 int megasas_get_device_list(struct megasas_instance *instance)
5783 {
5784         memset(instance->pd_list, 0,
5785                (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)));
5786         memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
5787
5788         if (instance->enable_fw_dev_list) {
5789                 if (megasas_host_device_list_query(instance, true))
5790                         return FAILED;
5791         } else {
5792                 if (megasas_get_pd_list(instance) < 0) {
5793                         dev_err(&instance->pdev->dev, "failed to get PD list\n");
5794                         return FAILED;
5795                 }
5796
5797                 if (megasas_ld_list_query(instance,
5798                                           MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) {
5799                         dev_err(&instance->pdev->dev, "failed to get LD list\n");
5800                         return FAILED;
5801                 }
5802         }
5803
5804         return SUCCESS;
5805 }
5806
5807 /**
5808  * megasas_set_high_iops_queue_affinity_hint -  Set affinity hint for high IOPS queues
5809  * @instance:                                   Adapter soft state
5810  * return:                                      void
5811  */
5812 static inline void
5813 megasas_set_high_iops_queue_affinity_hint(struct megasas_instance *instance)
5814 {
5815         int i;
5816         int local_numa_node;
5817
5818         if (instance->perf_mode == MR_BALANCED_PERF_MODE) {
5819                 local_numa_node = dev_to_node(&instance->pdev->dev);
5820
5821                 for (i = 0; i < instance->low_latency_index_start; i++)
5822                         irq_set_affinity_hint(pci_irq_vector(instance->pdev, i),
5823                                 cpumask_of_node(local_numa_node));
5824         }
5825 }
5826
5827 static int
5828 __megasas_alloc_irq_vectors(struct megasas_instance *instance)
5829 {
5830         int i, irq_flags;
5831         struct irq_affinity desc = { .pre_vectors = instance->low_latency_index_start };
5832         struct irq_affinity *descp = &desc;
5833
5834         irq_flags = PCI_IRQ_MSIX;
5835
5836         if (instance->smp_affinity_enable)
5837                 irq_flags |= PCI_IRQ_AFFINITY;
5838         else
5839                 descp = NULL;
5840
5841         i = pci_alloc_irq_vectors_affinity(instance->pdev,
5842                 instance->low_latency_index_start,
5843                 instance->msix_vectors, irq_flags, descp);
5844
5845         return i;
5846 }
5847
5848 /**
5849  * megasas_alloc_irq_vectors -  Allocate IRQ vectors/enable MSI-x vectors
5850  * @instance:                   Adapter soft state
5851  * return:                      void
5852  */
5853 static void
5854 megasas_alloc_irq_vectors(struct megasas_instance *instance)
5855 {
5856         int i;
5857         unsigned int num_msix_req;
5858
5859         i = __megasas_alloc_irq_vectors(instance);
5860
5861         if ((instance->perf_mode == MR_BALANCED_PERF_MODE) &&
5862             (i != instance->msix_vectors)) {
5863                 if (instance->msix_vectors)
5864                         pci_free_irq_vectors(instance->pdev);
5865                 /* Disable Balanced IOPS mode and try realloc vectors */
5866                 instance->perf_mode = MR_LATENCY_PERF_MODE;
5867                 instance->low_latency_index_start = 1;
5868                 num_msix_req = num_online_cpus() + instance->low_latency_index_start;
5869
5870                 instance->msix_vectors = min(num_msix_req,
5871                                 instance->msix_vectors);
5872
5873                 i = __megasas_alloc_irq_vectors(instance);
5874
5875         }
5876
5877         dev_info(&instance->pdev->dev,
5878                 "requested/available msix %d/%d\n", instance->msix_vectors, i);
5879
5880         if (i > 0)
5881                 instance->msix_vectors = i;
5882         else
5883                 instance->msix_vectors = 0;
5884
5885         if (instance->smp_affinity_enable)
5886                 megasas_set_high_iops_queue_affinity_hint(instance);
5887 }
5888
5889 /**
5890  * megasas_init_fw -    Initializes the FW
5891  * @instance:           Adapter soft state
5892  *
5893  * This is the main function for initializing firmware
5894  */
5895
5896 static int megasas_init_fw(struct megasas_instance *instance)
5897 {
5898         u32 max_sectors_1;
5899         u32 max_sectors_2, tmp_sectors, msix_enable;
5900         u32 scratch_pad_1, scratch_pad_2, scratch_pad_3, status_reg;
5901         resource_size_t base_addr;
5902         void *base_addr_phys;
5903         struct megasas_ctrl_info *ctrl_info = NULL;
5904         unsigned long bar_list;
5905         int i, j, loop;
5906         struct IOV_111 *iovPtr;
5907         struct fusion_context *fusion;
5908         bool intr_coalescing;
5909         unsigned int num_msix_req;
5910         u16 lnksta, speed;
5911
5912         fusion = instance->ctrl_context;
5913
5914         /* Find first memory bar */
5915         bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
5916         instance->bar = find_first_bit(&bar_list, BITS_PER_LONG);
5917         if (pci_request_selected_regions(instance->pdev, 1<<instance->bar,
5918                                          "megasas: LSI")) {
5919                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "IO memory region busy!\n");
5920                 return -EBUSY;
5921         }
5922
5923         base_addr = pci_resource_start(instance->pdev, instance->bar);
5924         instance->reg_set = ioremap(base_addr, 8192);
5925
5926         if (!instance->reg_set) {
5927                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to map IO mem\n");
5928                 goto fail_ioremap;
5929         }
5930
5931         base_addr_phys = &base_addr;
5932         dev_printk(KERN_DEBUG, &instance->pdev->dev,
5933                    "BAR:0x%lx  BAR's base_addr(phys):%pa  mapped virt_addr:0x%p\n",
5934                    instance->bar, base_addr_phys, instance->reg_set);
5935
5936         if (instance->adapter_type != MFI_SERIES)
5937                 instance->instancet = &megasas_instance_template_fusion;
5938         else {
5939                 switch (instance->pdev->device) {
5940                 case PCI_DEVICE_ID_LSI_SAS1078R:
5941                 case PCI_DEVICE_ID_LSI_SAS1078DE:
5942                         instance->instancet = &megasas_instance_template_ppc;
5943                         break;
5944                 case PCI_DEVICE_ID_LSI_SAS1078GEN2:
5945                 case PCI_DEVICE_ID_LSI_SAS0079GEN2:
5946                         instance->instancet = &megasas_instance_template_gen2;
5947                         break;
5948                 case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
5949                 case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
5950                         instance->instancet = &megasas_instance_template_skinny;
5951                         break;
5952                 case PCI_DEVICE_ID_LSI_SAS1064R:
5953                 case PCI_DEVICE_ID_DELL_PERC5:
5954                 default:
5955                         instance->instancet = &megasas_instance_template_xscale;
5956                         instance->pd_list_not_supported = 1;
5957                         break;
5958                 }
5959         }
5960
5961         if (megasas_transition_to_ready(instance, 0)) {
5962                 dev_info(&instance->pdev->dev,
5963                          "Failed to transition controller to ready from %s!\n",
5964                          __func__);
5965                 if (instance->adapter_type != MFI_SERIES) {
5966                         status_reg = instance->instancet->read_fw_status_reg(
5967                                         instance);
5968                         if (status_reg & MFI_RESET_ADAPTER) {
5969                                 if (megasas_adp_reset_wait_for_ready
5970                                         (instance, true, 0) == FAILED)
5971                                         goto fail_ready_state;
5972                         } else {
5973                                 goto fail_ready_state;
5974                         }
5975                 } else {
5976                         atomic_set(&instance->fw_reset_no_pci_access, 1);
5977                         instance->instancet->adp_reset
5978                                 (instance, instance->reg_set);
5979                         atomic_set(&instance->fw_reset_no_pci_access, 0);
5980
5981                         /*waiting for about 30 second before retry*/
5982                         ssleep(30);
5983
5984                         if (megasas_transition_to_ready(instance, 0))
5985                                 goto fail_ready_state;
5986                 }
5987
5988                 dev_info(&instance->pdev->dev,
5989                          "FW restarted successfully from %s!\n",
5990                          __func__);
5991         }
5992
5993         megasas_init_ctrl_params(instance);
5994
5995         if (megasas_set_dma_mask(instance))
5996                 goto fail_ready_state;
5997
5998         if (megasas_alloc_ctrl_mem(instance))
5999                 goto fail_alloc_dma_buf;
6000
6001         if (megasas_alloc_ctrl_dma_buffers(instance))
6002                 goto fail_alloc_dma_buf;
6003
6004         fusion = instance->ctrl_context;
6005
6006         if (instance->adapter_type >= VENTURA_SERIES) {
6007                 scratch_pad_2 =
6008                         megasas_readl(instance,
6009                                       &instance->reg_set->outbound_scratch_pad_2);
6010                 instance->max_raid_mapsize = ((scratch_pad_2 >>
6011                         MR_MAX_RAID_MAP_SIZE_OFFSET_SHIFT) &
6012                         MR_MAX_RAID_MAP_SIZE_MASK);
6013         }
6014
6015         instance->enable_sdev_max_qd = enable_sdev_max_qd;
6016
6017         switch (instance->adapter_type) {
6018         case VENTURA_SERIES:
6019                 fusion->pcie_bw_limitation = true;
6020                 break;
6021         case AERO_SERIES:
6022                 fusion->r56_div_offload = true;
6023                 break;
6024         default:
6025                 break;
6026         }
6027
6028         /* Check if MSI-X is supported while in ready state */
6029         msix_enable = (instance->instancet->read_fw_status_reg(instance) &
6030                        0x4000000) >> 0x1a;
6031         if (msix_enable && !msix_disable) {
6032
6033                 scratch_pad_1 = megasas_readl
6034                         (instance, &instance->reg_set->outbound_scratch_pad_1);
6035                 /* Check max MSI-X vectors */
6036                 if (fusion) {
6037                         if (instance->adapter_type == THUNDERBOLT_SERIES) {
6038                                 /* Thunderbolt Series*/
6039                                 instance->msix_vectors = (scratch_pad_1
6040                                         & MR_MAX_REPLY_QUEUES_OFFSET) + 1;
6041                         } else {
6042                                 instance->msix_vectors = ((scratch_pad_1
6043                                         & MR_MAX_REPLY_QUEUES_EXT_OFFSET)
6044                                         >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1;
6045
6046                                 /*
6047                                  * For Invader series, > 8 MSI-x vectors
6048                                  * supported by FW/HW implies combined
6049                                  * reply queue mode is enabled.
6050                                  * For Ventura series, > 16 MSI-x vectors
6051                                  * supported by FW/HW implies combined
6052                                  * reply queue mode is enabled.
6053                                  */
6054                                 switch (instance->adapter_type) {
6055                                 case INVADER_SERIES:
6056                                         if (instance->msix_vectors > 8)
6057                                                 instance->msix_combined = true;
6058                                         break;
6059                                 case AERO_SERIES:
6060                                 case VENTURA_SERIES:
6061                                         if (instance->msix_vectors > 16)
6062                                                 instance->msix_combined = true;
6063                                         break;
6064                                 }
6065
6066                                 if (rdpq_enable)
6067                                         instance->is_rdpq = (scratch_pad_1 & MR_RDPQ_MODE_OFFSET) ?
6068                                                                 1 : 0;
6069
6070                                 if (instance->adapter_type >= INVADER_SERIES &&
6071                                     !instance->msix_combined) {
6072                                         instance->msix_load_balance = true;
6073                                         instance->smp_affinity_enable = false;
6074                                 }
6075
6076                                 /* Save 1-15 reply post index address to local memory
6077                                  * Index 0 is already saved from reg offset
6078                                  * MPI2_REPLY_POST_HOST_INDEX_OFFSET
6079                                  */
6080                                 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) {
6081                                         instance->reply_post_host_index_addr[loop] =
6082                                                 (u32 __iomem *)
6083                                                 ((u8 __iomem *)instance->reg_set +
6084                                                 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET
6085                                                 + (loop * 0x10));
6086                                 }
6087                         }
6088
6089                         dev_info(&instance->pdev->dev,
6090                                  "firmware supports msix\t: (%d)",
6091                                  instance->msix_vectors);
6092                         if (msix_vectors)
6093                                 instance->msix_vectors = min(msix_vectors,
6094                                         instance->msix_vectors);
6095                 } else /* MFI adapters */
6096                         instance->msix_vectors = 1;
6097
6098
6099                 /*
6100                  * For Aero (if some conditions are met), driver will configure a
6101                  * few additional reply queues with interrupt coalescing enabled.
6102                  * These queues with interrupt coalescing enabled are called
6103                  * High IOPS queues and rest of reply queues (based on number of
6104                  * logical CPUs) are termed as Low latency queues.
6105                  *
6106                  * Total Number of reply queues = High IOPS queues + low latency queues
6107                  *
6108                  * For rest of fusion adapters, 1 additional reply queue will be
6109                  * reserved for management commands, rest of reply queues
6110                  * (based on number of logical CPUs) will be used for IOs and
6111                  * referenced as IO queues.
6112                  * Total Number of reply queues = 1 + IO queues
6113                  *
6114                  * MFI adapters supports single MSI-x so single reply queue
6115                  * will be used for IO and management commands.
6116                  */
6117
6118                 intr_coalescing = (scratch_pad_1 & MR_INTR_COALESCING_SUPPORT_OFFSET) ?
6119                                                                 true : false;
6120                 if (intr_coalescing &&
6121                         (num_online_cpus() >= MR_HIGH_IOPS_QUEUE_COUNT) &&
6122                         (instance->msix_vectors == MEGASAS_MAX_MSIX_QUEUES))
6123                         instance->perf_mode = MR_BALANCED_PERF_MODE;
6124                 else
6125                         instance->perf_mode = MR_LATENCY_PERF_MODE;
6126
6127
6128                 if (instance->adapter_type == AERO_SERIES) {
6129                         pcie_capability_read_word(instance->pdev, PCI_EXP_LNKSTA, &lnksta);
6130                         speed = lnksta & PCI_EXP_LNKSTA_CLS;
6131
6132                         /*
6133                          * For Aero, if PCIe link speed is <16 GT/s, then driver should operate
6134                          * in latency perf mode and enable R1 PCI bandwidth algorithm
6135                          */
6136                         if (speed < 0x4) {
6137                                 instance->perf_mode = MR_LATENCY_PERF_MODE;
6138                                 fusion->pcie_bw_limitation = true;
6139                         }
6140
6141                         /*
6142                          * Performance mode settings provided through module parameter-perf_mode will
6143                          * take affect only for:
6144                          * 1. Aero family of adapters.
6145                          * 2. When user sets module parameter- perf_mode in range of 0-2.
6146                          */
6147                         if ((perf_mode >= MR_BALANCED_PERF_MODE) &&
6148                                 (perf_mode <= MR_LATENCY_PERF_MODE))
6149                                 instance->perf_mode = perf_mode;
6150                         /*
6151                          * If intr coalescing is not supported by controller FW, then IOPS
6152                          * and Balanced modes are not feasible.
6153                          */
6154                         if (!intr_coalescing)
6155                                 instance->perf_mode = MR_LATENCY_PERF_MODE;
6156
6157                 }
6158
6159                 if (instance->perf_mode == MR_BALANCED_PERF_MODE)
6160                         instance->low_latency_index_start =
6161                                 MR_HIGH_IOPS_QUEUE_COUNT;
6162                 else
6163                         instance->low_latency_index_start = 1;
6164
6165                 num_msix_req = num_online_cpus() + instance->low_latency_index_start;
6166
6167                 instance->msix_vectors = min(num_msix_req,
6168                                 instance->msix_vectors);
6169
6170                 megasas_alloc_irq_vectors(instance);
6171                 if (!instance->msix_vectors)
6172                         instance->msix_load_balance = false;
6173         }
6174         /*
6175          * MSI-X host index 0 is common for all adapter.
6176          * It is used for all MPT based Adapters.
6177          */
6178         if (instance->msix_combined) {
6179                 instance->reply_post_host_index_addr[0] =
6180                                 (u32 *)((u8 *)instance->reg_set +
6181                                 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET);
6182         } else {
6183                 instance->reply_post_host_index_addr[0] =
6184                         (u32 *)((u8 *)instance->reg_set +
6185                         MPI2_REPLY_POST_HOST_INDEX_OFFSET);
6186         }
6187
6188         if (!instance->msix_vectors) {
6189                 i = pci_alloc_irq_vectors(instance->pdev, 1, 1, PCI_IRQ_LEGACY);
6190                 if (i < 0)
6191                         goto fail_init_adapter;
6192         }
6193
6194         megasas_setup_reply_map(instance);
6195
6196         dev_info(&instance->pdev->dev,
6197                 "current msix/online cpus\t: (%d/%d)\n",
6198                 instance->msix_vectors, (unsigned int)num_online_cpus());
6199         dev_info(&instance->pdev->dev,
6200                 "RDPQ mode\t: (%s)\n", instance->is_rdpq ? "enabled" : "disabled");
6201
6202         tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
6203                 (unsigned long)instance);
6204
6205         /*
6206          * Below are default value for legacy Firmware.
6207          * non-fusion based controllers
6208          */
6209         instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
6210         instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
6211         /* Get operational params, sge flags, send init cmd to controller */
6212         if (instance->instancet->init_adapter(instance))
6213                 goto fail_init_adapter;
6214
6215         if (instance->adapter_type >= VENTURA_SERIES) {
6216                 scratch_pad_3 =
6217                         megasas_readl(instance,
6218                                       &instance->reg_set->outbound_scratch_pad_3);
6219                 if ((scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK) >=
6220                         MR_DEFAULT_NVME_PAGE_SHIFT)
6221                         instance->nvme_page_size =
6222                                 (1 << (scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK));
6223
6224                 dev_info(&instance->pdev->dev,
6225                          "NVME page size\t: (%d)\n", instance->nvme_page_size);
6226         }
6227
6228         if (instance->msix_vectors ?
6229                 megasas_setup_irqs_msix(instance, 1) :
6230                 megasas_setup_irqs_ioapic(instance))
6231                 goto fail_init_adapter;
6232
6233         if (instance->adapter_type != MFI_SERIES)
6234                 megasas_setup_irq_poll(instance);
6235
6236         instance->instancet->enable_intr(instance);
6237
6238         dev_info(&instance->pdev->dev, "INIT adapter done\n");
6239
6240         megasas_setup_jbod_map(instance);
6241
6242         if (megasas_get_device_list(instance) != SUCCESS) {
6243                 dev_err(&instance->pdev->dev,
6244                         "%s: megasas_get_device_list failed\n",
6245                         __func__);
6246                 goto fail_get_ld_pd_list;
6247         }
6248
6249         /* stream detection initialization */
6250         if (instance->adapter_type >= VENTURA_SERIES) {
6251                 fusion->stream_detect_by_ld =
6252                         kcalloc(MAX_LOGICAL_DRIVES_EXT,
6253                                 sizeof(struct LD_STREAM_DETECT *),
6254                                 GFP_KERNEL);
6255                 if (!fusion->stream_detect_by_ld) {
6256                         dev_err(&instance->pdev->dev,
6257                                 "unable to allocate stream detection for pool of LDs\n");
6258                         goto fail_get_ld_pd_list;
6259                 }
6260                 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i) {
6261                         fusion->stream_detect_by_ld[i] =
6262                                 kzalloc(sizeof(struct LD_STREAM_DETECT),
6263                                 GFP_KERNEL);
6264                         if (!fusion->stream_detect_by_ld[i]) {
6265                                 dev_err(&instance->pdev->dev,
6266                                         "unable to allocate stream detect by LD\n ");
6267                                 for (j = 0; j < i; ++j)
6268                                         kfree(fusion->stream_detect_by_ld[j]);
6269                                 kfree(fusion->stream_detect_by_ld);
6270                                 fusion->stream_detect_by_ld = NULL;
6271                                 goto fail_get_ld_pd_list;
6272                         }
6273                         fusion->stream_detect_by_ld[i]->mru_bit_map
6274                                 = MR_STREAM_BITMAP;
6275                 }
6276         }
6277
6278         /*
6279          * Compute the max allowed sectors per IO: The controller info has two
6280          * limits on max sectors. Driver should use the minimum of these two.
6281          *
6282          * 1 << stripe_sz_ops.min = max sectors per strip
6283          *
6284          * Note that older firmwares ( < FW ver 30) didn't report information
6285          * to calculate max_sectors_1. So the number ended up as zero always.
6286          */
6287         tmp_sectors = 0;
6288         ctrl_info = instance->ctrl_info_buf;
6289
6290         max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
6291                 le16_to_cpu(ctrl_info->max_strips_per_io);
6292         max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size);
6293
6294         tmp_sectors = min_t(u32, max_sectors_1, max_sectors_2);
6295
6296         instance->peerIsPresent = ctrl_info->cluster.peerIsPresent;
6297         instance->passive = ctrl_info->cluster.passive;
6298         memcpy(instance->clusterId, ctrl_info->clusterId, sizeof(instance->clusterId));
6299         instance->UnevenSpanSupport =
6300                 ctrl_info->adapterOperations2.supportUnevenSpans;
6301         if (instance->UnevenSpanSupport) {
6302                 struct fusion_context *fusion = instance->ctrl_context;
6303                 if (MR_ValidateMapInfo(instance, instance->map_id))
6304                         fusion->fast_path_io = 1;
6305                 else
6306                         fusion->fast_path_io = 0;
6307
6308         }
6309         if (ctrl_info->host_interface.SRIOV) {
6310                 instance->requestorId = ctrl_info->iov.requestorId;
6311                 if (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) {
6312                         if (!ctrl_info->adapterOperations2.activePassive)
6313                             instance->PlasmaFW111 = 1;
6314
6315                         dev_info(&instance->pdev->dev, "SR-IOV: firmware type: %s\n",
6316                             instance->PlasmaFW111 ? "1.11" : "new");
6317
6318                         if (instance->PlasmaFW111) {
6319                             iovPtr = (struct IOV_111 *)
6320                                 ((unsigned char *)ctrl_info + IOV_111_OFFSET);
6321                             instance->requestorId = iovPtr->requestorId;
6322                         }
6323                 }
6324                 dev_info(&instance->pdev->dev, "SRIOV: VF requestorId %d\n",
6325                         instance->requestorId);
6326         }
6327
6328         instance->crash_dump_fw_support =
6329                 ctrl_info->adapterOperations3.supportCrashDump;
6330         instance->crash_dump_drv_support =
6331                 (instance->crash_dump_fw_support &&
6332                 instance->crash_dump_buf);
6333         if (instance->crash_dump_drv_support)
6334                 megasas_set_crash_dump_params(instance,
6335                         MR_CRASH_BUF_TURN_OFF);
6336
6337         else {
6338                 if (instance->crash_dump_buf)
6339                         dma_free_coherent(&instance->pdev->dev,
6340                                 CRASH_DMA_BUF_SIZE,
6341                                 instance->crash_dump_buf,
6342                                 instance->crash_dump_h);
6343                 instance->crash_dump_buf = NULL;
6344         }
6345
6346         if (instance->snapdump_wait_time) {
6347                 megasas_get_snapdump_properties(instance);
6348                 dev_info(&instance->pdev->dev, "Snap dump wait time\t: %d\n",
6349                          instance->snapdump_wait_time);
6350         }
6351
6352         dev_info(&instance->pdev->dev,
6353                 "pci id\t\t: (0x%04x)/(0x%04x)/(0x%04x)/(0x%04x)\n",
6354                 le16_to_cpu(ctrl_info->pci.vendor_id),
6355                 le16_to_cpu(ctrl_info->pci.device_id),
6356                 le16_to_cpu(ctrl_info->pci.sub_vendor_id),
6357                 le16_to_cpu(ctrl_info->pci.sub_device_id));
6358         dev_info(&instance->pdev->dev, "unevenspan support      : %s\n",
6359                 instance->UnevenSpanSupport ? "yes" : "no");
6360         dev_info(&instance->pdev->dev, "firmware crash dump     : %s\n",
6361                 instance->crash_dump_drv_support ? "yes" : "no");
6362         dev_info(&instance->pdev->dev, "JBOD sequence map       : %s\n",
6363                 instance->use_seqnum_jbod_fp ? "enabled" : "disabled");
6364
6365         instance->max_sectors_per_req = instance->max_num_sge *
6366                                                 SGE_BUFFER_SIZE / 512;
6367         if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
6368                 instance->max_sectors_per_req = tmp_sectors;
6369
6370         /* Check for valid throttlequeuedepth module parameter */
6371         if (throttlequeuedepth &&
6372                         throttlequeuedepth <= instance->max_scsi_cmds)
6373                 instance->throttlequeuedepth = throttlequeuedepth;
6374         else
6375                 instance->throttlequeuedepth =
6376                                 MEGASAS_THROTTLE_QUEUE_DEPTH;
6377
6378         if ((resetwaittime < 1) ||
6379             (resetwaittime > MEGASAS_RESET_WAIT_TIME))
6380                 resetwaittime = MEGASAS_RESET_WAIT_TIME;
6381
6382         if ((scmd_timeout < 10) || (scmd_timeout > MEGASAS_DEFAULT_CMD_TIMEOUT))
6383                 scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
6384
6385         /* Launch SR-IOV heartbeat timer */
6386         if (instance->requestorId) {
6387                 if (!megasas_sriov_start_heartbeat(instance, 1)) {
6388                         megasas_start_timer(instance);
6389                 } else {
6390                         instance->skip_heartbeat_timer_del = 1;
6391                         goto fail_get_ld_pd_list;
6392                 }
6393         }
6394
6395         /*
6396          * Create and start watchdog thread which will monitor
6397          * controller state every 1 sec and trigger OCR when
6398          * it enters fault state
6399          */
6400         if (instance->adapter_type != MFI_SERIES)
6401                 if (megasas_fusion_start_watchdog(instance) != SUCCESS)
6402                         goto fail_start_watchdog;
6403
6404         return 0;
6405
6406 fail_start_watchdog:
6407         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
6408                 del_timer_sync(&instance->sriov_heartbeat_timer);
6409 fail_get_ld_pd_list:
6410         instance->instancet->disable_intr(instance);
6411         megasas_destroy_irqs(instance);
6412 fail_init_adapter:
6413         if (instance->msix_vectors)
6414                 pci_free_irq_vectors(instance->pdev);
6415         instance->msix_vectors = 0;
6416 fail_alloc_dma_buf:
6417         megasas_free_ctrl_dma_buffers(instance);
6418         megasas_free_ctrl_mem(instance);
6419 fail_ready_state:
6420         iounmap(instance->reg_set);
6421
6422 fail_ioremap:
6423         pci_release_selected_regions(instance->pdev, 1<<instance->bar);
6424
6425         dev_err(&instance->pdev->dev, "Failed from %s %d\n",
6426                 __func__, __LINE__);
6427         return -EINVAL;
6428 }
6429
6430 /**
6431  * megasas_release_mfi -        Reverses the FW initialization
6432  * @instance:                   Adapter soft state
6433  */
6434 static void megasas_release_mfi(struct megasas_instance *instance)
6435 {
6436         u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
6437
6438         if (instance->reply_queue)
6439                 dma_free_coherent(&instance->pdev->dev, reply_q_sz,
6440                             instance->reply_queue, instance->reply_queue_h);
6441
6442         megasas_free_cmds(instance);
6443
6444         iounmap(instance->reg_set);
6445
6446         pci_release_selected_regions(instance->pdev, 1<<instance->bar);
6447 }
6448
6449 /**
6450  * megasas_get_seq_num -        Gets latest event sequence numbers
6451  * @instance:                   Adapter soft state
6452  * @eli:                        FW event log sequence numbers information
6453  *
6454  * FW maintains a log of all events in a non-volatile area. Upper layers would
6455  * usually find out the latest sequence number of the events, the seq number at
6456  * the boot etc. They would "read" all the events below the latest seq number
6457  * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
6458  * number), they would subsribe to AEN (asynchronous event notification) and
6459  * wait for the events to happen.
6460  */
6461 static int
6462 megasas_get_seq_num(struct megasas_instance *instance,
6463                     struct megasas_evt_log_info *eli)
6464 {
6465         struct megasas_cmd *cmd;
6466         struct megasas_dcmd_frame *dcmd;
6467         struct megasas_evt_log_info *el_info;
6468         dma_addr_t el_info_h = 0;
6469         int ret;
6470
6471         cmd = megasas_get_cmd(instance);
6472
6473         if (!cmd) {
6474                 return -ENOMEM;
6475         }
6476
6477         dcmd = &cmd->frame->dcmd;
6478         el_info = dma_alloc_coherent(&instance->pdev->dev,
6479                                      sizeof(struct megasas_evt_log_info),
6480                                      &el_info_h, GFP_KERNEL);
6481         if (!el_info) {
6482                 megasas_return_cmd(instance, cmd);
6483                 return -ENOMEM;
6484         }
6485
6486         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6487
6488         dcmd->cmd = MFI_CMD_DCMD;
6489         dcmd->cmd_status = 0x0;
6490         dcmd->sge_count = 1;
6491         dcmd->flags = MFI_FRAME_DIR_READ;
6492         dcmd->timeout = 0;
6493         dcmd->pad_0 = 0;
6494         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info));
6495         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO);
6496
6497         megasas_set_dma_settings(instance, dcmd, el_info_h,
6498                                  sizeof(struct megasas_evt_log_info));
6499
6500         ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
6501         if (ret != DCMD_SUCCESS) {
6502                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
6503                         __func__, __LINE__);
6504                 goto dcmd_failed;
6505         }
6506
6507         /*
6508          * Copy the data back into callers buffer
6509          */
6510         eli->newest_seq_num = el_info->newest_seq_num;
6511         eli->oldest_seq_num = el_info->oldest_seq_num;
6512         eli->clear_seq_num = el_info->clear_seq_num;
6513         eli->shutdown_seq_num = el_info->shutdown_seq_num;
6514         eli->boot_seq_num = el_info->boot_seq_num;
6515
6516 dcmd_failed:
6517         dma_free_coherent(&instance->pdev->dev,
6518                         sizeof(struct megasas_evt_log_info),
6519                         el_info, el_info_h);
6520
6521         megasas_return_cmd(instance, cmd);
6522
6523         return ret;
6524 }
6525
6526 /**
6527  * megasas_register_aen -       Registers for asynchronous event notification
6528  * @instance:                   Adapter soft state
6529  * @seq_num:                    The starting sequence number
6530  * @class_locale_word:          Class of the event
6531  *
6532  * This function subscribes for AEN for events beyond the @seq_num. It requests
6533  * to be notified if and only if the event is of type @class_locale
6534  */
6535 static int
6536 megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
6537                      u32 class_locale_word)
6538 {
6539         int ret_val;
6540         struct megasas_cmd *cmd;
6541         struct megasas_dcmd_frame *dcmd;
6542         union megasas_evt_class_locale curr_aen;
6543         union megasas_evt_class_locale prev_aen;
6544
6545         /*
6546          * If there an AEN pending already (aen_cmd), check if the
6547          * class_locale of that pending AEN is inclusive of the new
6548          * AEN request we currently have. If it is, then we don't have
6549          * to do anything. In other words, whichever events the current
6550          * AEN request is subscribing to, have already been subscribed
6551          * to.
6552          *
6553          * If the old_cmd is _not_ inclusive, then we have to abort
6554          * that command, form a class_locale that is superset of both
6555          * old and current and re-issue to the FW
6556          */
6557
6558         curr_aen.word = class_locale_word;
6559
6560         if (instance->aen_cmd) {
6561
6562                 prev_aen.word =
6563                         le32_to_cpu(instance->aen_cmd->frame->dcmd.mbox.w[1]);
6564
6565                 if ((curr_aen.members.class < MFI_EVT_CLASS_DEBUG) ||
6566                     (curr_aen.members.class > MFI_EVT_CLASS_DEAD)) {
6567                         dev_info(&instance->pdev->dev,
6568                                  "%s %d out of range class %d send by application\n",
6569                                  __func__, __LINE__, curr_aen.members.class);
6570                         return 0;
6571                 }
6572
6573                 /*
6574                  * A class whose enum value is smaller is inclusive of all
6575                  * higher values. If a PROGRESS (= -1) was previously
6576                  * registered, then a new registration requests for higher
6577                  * classes need not be sent to FW. They are automatically
6578                  * included.
6579                  *
6580                  * Locale numbers don't have such hierarchy. They are bitmap
6581                  * values
6582                  */
6583                 if ((prev_aen.members.class <= curr_aen.members.class) &&
6584                     !((prev_aen.members.locale & curr_aen.members.locale) ^
6585                       curr_aen.members.locale)) {
6586                         /*
6587                          * Previously issued event registration includes
6588                          * current request. Nothing to do.
6589                          */
6590                         return 0;
6591                 } else {
6592                         curr_aen.members.locale |= prev_aen.members.locale;
6593
6594                         if (prev_aen.members.class < curr_aen.members.class)
6595                                 curr_aen.members.class = prev_aen.members.class;
6596
6597                         instance->aen_cmd->abort_aen = 1;
6598                         ret_val = megasas_issue_blocked_abort_cmd(instance,
6599                                                                   instance->
6600                                                                   aen_cmd, 30);
6601
6602                         if (ret_val) {
6603                                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to abort "
6604                                        "previous AEN command\n");
6605                                 return ret_val;
6606                         }
6607                 }
6608         }
6609
6610         cmd = megasas_get_cmd(instance);
6611
6612         if (!cmd)
6613                 return -ENOMEM;
6614
6615         dcmd = &cmd->frame->dcmd;
6616
6617         memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
6618
6619         /*
6620          * Prepare DCMD for aen registration
6621          */
6622         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6623
6624         dcmd->cmd = MFI_CMD_DCMD;
6625         dcmd->cmd_status = 0x0;
6626         dcmd->sge_count = 1;
6627         dcmd->flags = MFI_FRAME_DIR_READ;
6628         dcmd->timeout = 0;
6629         dcmd->pad_0 = 0;
6630         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail));
6631         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT);
6632         dcmd->mbox.w[0] = cpu_to_le32(seq_num);
6633         instance->last_seq_num = seq_num;
6634         dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word);
6635
6636         megasas_set_dma_settings(instance, dcmd, instance->evt_detail_h,
6637                                  sizeof(struct megasas_evt_detail));
6638
6639         if (instance->aen_cmd != NULL) {
6640                 megasas_return_cmd(instance, cmd);
6641                 return 0;
6642         }
6643
6644         /*
6645          * Store reference to the cmd used to register for AEN. When an
6646          * application wants us to register for AEN, we have to abort this
6647          * cmd and re-register with a new EVENT LOCALE supplied by that app
6648          */
6649         instance->aen_cmd = cmd;
6650
6651         /*
6652          * Issue the aen registration frame
6653          */
6654         instance->instancet->issue_dcmd(instance, cmd);
6655
6656         return 0;
6657 }
6658
6659 /* megasas_get_target_prop - Send DCMD with below details to firmware.
6660  *
6661  * This DCMD will fetch few properties of LD/system PD defined
6662  * in MR_TARGET_DEV_PROPERTIES. eg. Queue Depth, MDTS value.
6663  *
6664  * DCMD send by drivers whenever new target is added to the OS.
6665  *
6666  * dcmd.opcode         - MR_DCMD_DEV_GET_TARGET_PROP
6667  * dcmd.mbox.b[0]      - DCMD is to be fired for LD or system PD.
6668  *                       0 = system PD, 1 = LD.
6669  * dcmd.mbox.s[1]      - TargetID for LD/system PD.
6670  * dcmd.sge IN         - Pointer to return MR_TARGET_DEV_PROPERTIES.
6671  *
6672  * @instance:           Adapter soft state
6673  * @sdev:               OS provided scsi device
6674  *
6675  * Returns 0 on success non-zero on failure.
6676  */
6677 int
6678 megasas_get_target_prop(struct megasas_instance *instance,
6679                         struct scsi_device *sdev)
6680 {
6681         int ret;
6682         struct megasas_cmd *cmd;
6683         struct megasas_dcmd_frame *dcmd;
6684         u16 targetId = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL) +
6685                         sdev->id;
6686
6687         cmd = megasas_get_cmd(instance);
6688
6689         if (!cmd) {
6690                 dev_err(&instance->pdev->dev,
6691                         "Failed to get cmd %s\n", __func__);
6692                 return -ENOMEM;
6693         }
6694
6695         dcmd = &cmd->frame->dcmd;
6696
6697         memset(instance->tgt_prop, 0, sizeof(*instance->tgt_prop));
6698         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6699         dcmd->mbox.b[0] = MEGASAS_IS_LOGICAL(sdev);
6700
6701         dcmd->mbox.s[1] = cpu_to_le16(targetId);
6702         dcmd->cmd = MFI_CMD_DCMD;
6703         dcmd->cmd_status = 0xFF;
6704         dcmd->sge_count = 1;
6705         dcmd->flags = MFI_FRAME_DIR_READ;
6706         dcmd->timeout = 0;
6707         dcmd->pad_0 = 0;
6708         dcmd->data_xfer_len =
6709                 cpu_to_le32(sizeof(struct MR_TARGET_PROPERTIES));
6710         dcmd->opcode = cpu_to_le32(MR_DCMD_DRV_GET_TARGET_PROP);
6711
6712         megasas_set_dma_settings(instance, dcmd, instance->tgt_prop_h,
6713                                  sizeof(struct MR_TARGET_PROPERTIES));
6714
6715         if ((instance->adapter_type != MFI_SERIES) &&
6716             !instance->mask_interrupts)
6717                 ret = megasas_issue_blocked_cmd(instance,
6718                                                 cmd, MFI_IO_TIMEOUT_SECS);
6719         else
6720                 ret = megasas_issue_polled(instance, cmd);
6721
6722         switch (ret) {
6723         case DCMD_TIMEOUT:
6724                 switch (dcmd_timeout_ocr_possible(instance)) {
6725                 case INITIATE_OCR:
6726                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
6727                         mutex_unlock(&instance->reset_mutex);
6728                         megasas_reset_fusion(instance->host,
6729                                              MFI_IO_TIMEOUT_OCR);
6730                         mutex_lock(&instance->reset_mutex);
6731                         break;
6732                 case KILL_ADAPTER:
6733                         megaraid_sas_kill_hba(instance);
6734                         break;
6735                 case IGNORE_TIMEOUT:
6736                         dev_info(&instance->pdev->dev,
6737                                  "Ignore DCMD timeout: %s %d\n",
6738                                  __func__, __LINE__);
6739                         break;
6740                 }
6741                 break;
6742
6743         default:
6744                 megasas_return_cmd(instance, cmd);
6745         }
6746         if (ret != DCMD_SUCCESS)
6747                 dev_err(&instance->pdev->dev,
6748                         "return from %s %d return value %d\n",
6749                         __func__, __LINE__, ret);
6750
6751         return ret;
6752 }
6753
6754 /**
6755  * megasas_start_aen -  Subscribes to AEN during driver load time
6756  * @instance:           Adapter soft state
6757  */
6758 static int megasas_start_aen(struct megasas_instance *instance)
6759 {
6760         struct megasas_evt_log_info eli;
6761         union megasas_evt_class_locale class_locale;
6762
6763         /*
6764          * Get the latest sequence number from FW
6765          */
6766         memset(&eli, 0, sizeof(eli));
6767
6768         if (megasas_get_seq_num(instance, &eli))
6769                 return -1;
6770
6771         /*
6772          * Register AEN with FW for latest sequence number plus 1
6773          */
6774         class_locale.members.reserved = 0;
6775         class_locale.members.locale = MR_EVT_LOCALE_ALL;
6776         class_locale.members.class = MR_EVT_CLASS_DEBUG;
6777
6778         return megasas_register_aen(instance,
6779                         le32_to_cpu(eli.newest_seq_num) + 1,
6780                         class_locale.word);
6781 }
6782
6783 /**
6784  * megasas_io_attach -  Attaches this driver to SCSI mid-layer
6785  * @instance:           Adapter soft state
6786  */
6787 static int megasas_io_attach(struct megasas_instance *instance)
6788 {
6789         struct Scsi_Host *host = instance->host;
6790
6791         /*
6792          * Export parameters required by SCSI mid-layer
6793          */
6794         host->unique_id = instance->unique_id;
6795         host->can_queue = instance->max_scsi_cmds;
6796         host->this_id = instance->init_id;
6797         host->sg_tablesize = instance->max_num_sge;
6798
6799         if (instance->fw_support_ieee)
6800                 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE;
6801
6802         /*
6803          * Check if the module parameter value for max_sectors can be used
6804          */
6805         if (max_sectors && max_sectors < instance->max_sectors_per_req)
6806                 instance->max_sectors_per_req = max_sectors;
6807         else {
6808                 if (max_sectors) {
6809                         if (((instance->pdev->device ==
6810                                 PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
6811                                 (instance->pdev->device ==
6812                                 PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
6813                                 (max_sectors <= MEGASAS_MAX_SECTORS)) {
6814                                 instance->max_sectors_per_req = max_sectors;
6815                         } else {
6816                         dev_info(&instance->pdev->dev, "max_sectors should be > 0"
6817                                 "and <= %d (or < 1MB for GEN2 controller)\n",
6818                                 instance->max_sectors_per_req);
6819                         }
6820                 }
6821         }
6822
6823         host->max_sectors = instance->max_sectors_per_req;
6824         host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
6825         host->max_channel = MEGASAS_MAX_CHANNELS - 1;
6826         host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
6827         host->max_lun = MEGASAS_MAX_LUN;
6828         host->max_cmd_len = 16;
6829
6830         /* Use shared host tagset only for fusion adaptors
6831          * if there are managed interrupts (smp affinity enabled case).
6832          * Single msix_vectors in kdump, so shared host tag is also disabled.
6833          */
6834
6835         host->host_tagset = 0;
6836         host->nr_hw_queues = 1;
6837
6838         if ((instance->adapter_type != MFI_SERIES) &&
6839                 (instance->msix_vectors > instance->low_latency_index_start) &&
6840                 host_tagset_enable &&
6841                 instance->smp_affinity_enable) {
6842                 host->host_tagset = 1;
6843                 host->nr_hw_queues = instance->msix_vectors -
6844                         instance->low_latency_index_start;
6845         }
6846
6847         dev_info(&instance->pdev->dev,
6848                 "Max firmware commands: %d shared with nr_hw_queues = %d\n",
6849                 instance->max_fw_cmds, host->nr_hw_queues);
6850         /*
6851          * Notify the mid-layer about the new controller
6852          */
6853         if (scsi_add_host(host, &instance->pdev->dev)) {
6854                 dev_err(&instance->pdev->dev,
6855                         "Failed to add host from %s %d\n",
6856                         __func__, __LINE__);
6857                 return -ENODEV;
6858         }
6859
6860         return 0;
6861 }
6862
6863 /**
6864  * megasas_set_dma_mask -       Set DMA mask for supported controllers
6865  *
6866  * @instance:           Adapter soft state
6867  * Description:
6868  *
6869  * For Ventura, driver/FW will operate in 63bit DMA addresses.
6870  *
6871  * For invader-
6872  *      By default, driver/FW will operate in 32bit DMA addresses
6873  *      for consistent DMA mapping but if 32 bit consistent
6874  *      DMA mask fails, driver will try with 63 bit consistent
6875  *      mask provided FW is true 63bit DMA capable
6876  *
6877  * For older controllers(Thunderbolt and MFI based adapters)-
6878  *      driver/FW will operate in 32 bit consistent DMA addresses.
6879  */
6880 static int
6881 megasas_set_dma_mask(struct megasas_instance *instance)
6882 {
6883         u64 consistent_mask;
6884         struct pci_dev *pdev;
6885         u32 scratch_pad_1;
6886
6887         pdev = instance->pdev;
6888         consistent_mask = (instance->adapter_type >= VENTURA_SERIES) ?
6889                                 DMA_BIT_MASK(63) : DMA_BIT_MASK(32);
6890
6891         if (IS_DMA64) {
6892                 if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(63)) &&
6893                     dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
6894                         goto fail_set_dma_mask;
6895
6896                 if ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) &&
6897                     (dma_set_coherent_mask(&pdev->dev, consistent_mask) &&
6898                      dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))) {
6899                         /*
6900                          * If 32 bit DMA mask fails, then try for 64 bit mask
6901                          * for FW capable of handling 64 bit DMA.
6902                          */
6903                         scratch_pad_1 = megasas_readl
6904                                 (instance, &instance->reg_set->outbound_scratch_pad_1);
6905
6906                         if (!(scratch_pad_1 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET))
6907                                 goto fail_set_dma_mask;
6908                         else if (dma_set_mask_and_coherent(&pdev->dev,
6909                                                            DMA_BIT_MASK(63)))
6910                                 goto fail_set_dma_mask;
6911                 }
6912         } else if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
6913                 goto fail_set_dma_mask;
6914
6915         if (pdev->dev.coherent_dma_mask == DMA_BIT_MASK(32))
6916                 instance->consistent_mask_64bit = false;
6917         else
6918                 instance->consistent_mask_64bit = true;
6919
6920         dev_info(&pdev->dev, "%s bit DMA mask and %s bit consistent mask\n",
6921                  ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) ? "63" : "32"),
6922                  (instance->consistent_mask_64bit ? "63" : "32"));
6923
6924         return 0;
6925
6926 fail_set_dma_mask:
6927         dev_err(&pdev->dev, "Failed to set DMA mask\n");
6928         return -1;
6929
6930 }
6931
6932 /*
6933  * megasas_set_adapter_type -   Set adapter type.
6934  *                              Supported controllers can be divided in
6935  *                              different categories-
6936  *                                      enum MR_ADAPTER_TYPE {
6937  *                                              MFI_SERIES = 1,
6938  *                                              THUNDERBOLT_SERIES = 2,
6939  *                                              INVADER_SERIES = 3,
6940  *                                              VENTURA_SERIES = 4,
6941  *                                              AERO_SERIES = 5,
6942  *                                      };
6943  * @instance:                   Adapter soft state
6944  * return:                      void
6945  */
6946 static inline void megasas_set_adapter_type(struct megasas_instance *instance)
6947 {
6948         if ((instance->pdev->vendor == PCI_VENDOR_ID_DELL) &&
6949             (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5)) {
6950                 instance->adapter_type = MFI_SERIES;
6951         } else {
6952                 switch (instance->pdev->device) {
6953                 case PCI_DEVICE_ID_LSI_AERO_10E1:
6954                 case PCI_DEVICE_ID_LSI_AERO_10E2:
6955                 case PCI_DEVICE_ID_LSI_AERO_10E5:
6956                 case PCI_DEVICE_ID_LSI_AERO_10E6:
6957                         instance->adapter_type = AERO_SERIES;
6958                         break;
6959                 case PCI_DEVICE_ID_LSI_VENTURA:
6960                 case PCI_DEVICE_ID_LSI_CRUSADER:
6961                 case PCI_DEVICE_ID_LSI_HARPOON:
6962                 case PCI_DEVICE_ID_LSI_TOMCAT:
6963                 case PCI_DEVICE_ID_LSI_VENTURA_4PORT:
6964                 case PCI_DEVICE_ID_LSI_CRUSADER_4PORT:
6965                         instance->adapter_type = VENTURA_SERIES;
6966                         break;
6967                 case PCI_DEVICE_ID_LSI_FUSION:
6968                 case PCI_DEVICE_ID_LSI_PLASMA:
6969                         instance->adapter_type = THUNDERBOLT_SERIES;
6970                         break;
6971                 case PCI_DEVICE_ID_LSI_INVADER:
6972                 case PCI_DEVICE_ID_LSI_INTRUDER:
6973                 case PCI_DEVICE_ID_LSI_INTRUDER_24:
6974                 case PCI_DEVICE_ID_LSI_CUTLASS_52:
6975                 case PCI_DEVICE_ID_LSI_CUTLASS_53:
6976                 case PCI_DEVICE_ID_LSI_FURY:
6977                         instance->adapter_type = INVADER_SERIES;
6978                         break;
6979                 default: /* For all other supported controllers */
6980                         instance->adapter_type = MFI_SERIES;
6981                         break;
6982                 }
6983         }
6984 }
6985
6986 static inline int megasas_alloc_mfi_ctrl_mem(struct megasas_instance *instance)
6987 {
6988         instance->producer = dma_alloc_coherent(&instance->pdev->dev,
6989                         sizeof(u32), &instance->producer_h, GFP_KERNEL);
6990         instance->consumer = dma_alloc_coherent(&instance->pdev->dev,
6991                         sizeof(u32), &instance->consumer_h, GFP_KERNEL);
6992
6993         if (!instance->producer || !instance->consumer) {
6994                 dev_err(&instance->pdev->dev,
6995                         "Failed to allocate memory for producer, consumer\n");
6996                 return -1;
6997         }
6998
6999         *instance->producer = 0;
7000         *instance->consumer = 0;
7001         return 0;
7002 }
7003
7004 /**
7005  * megasas_alloc_ctrl_mem -     Allocate per controller memory for core data
7006  *                              structures which are not common across MFI
7007  *                              adapters and fusion adapters.
7008  *                              For MFI based adapters, allocate producer and
7009  *                              consumer buffers. For fusion adapters, allocate
7010  *                              memory for fusion context.
7011  * @instance:                   Adapter soft state
7012  * return:                      0 for SUCCESS
7013  */
7014 static int megasas_alloc_ctrl_mem(struct megasas_instance *instance)
7015 {
7016         instance->reply_map = kcalloc(nr_cpu_ids, sizeof(unsigned int),
7017                                       GFP_KERNEL);
7018         if (!instance->reply_map)
7019                 return -ENOMEM;
7020
7021         switch (instance->adapter_type) {
7022         case MFI_SERIES:
7023                 if (megasas_alloc_mfi_ctrl_mem(instance))
7024                         goto fail;
7025                 break;
7026         case AERO_SERIES:
7027         case VENTURA_SERIES:
7028         case THUNDERBOLT_SERIES:
7029         case INVADER_SERIES:
7030                 if (megasas_alloc_fusion_context(instance))
7031                         goto fail;
7032                 break;
7033         }
7034
7035         return 0;
7036  fail:
7037         kfree(instance->reply_map);
7038         instance->reply_map = NULL;
7039         return -ENOMEM;
7040 }
7041
7042 /*
7043  * megasas_free_ctrl_mem -      Free fusion context for fusion adapters and
7044  *                              producer, consumer buffers for MFI adapters
7045  *
7046  * @instance -                  Adapter soft instance
7047  *
7048  */
7049 static inline void megasas_free_ctrl_mem(struct megasas_instance *instance)
7050 {
7051         kfree(instance->reply_map);
7052         if (instance->adapter_type == MFI_SERIES) {
7053                 if (instance->producer)
7054                         dma_free_coherent(&instance->pdev->dev, sizeof(u32),
7055                                             instance->producer,
7056                                             instance->producer_h);
7057                 if (instance->consumer)
7058                         dma_free_coherent(&instance->pdev->dev, sizeof(u32),
7059                                             instance->consumer,
7060                                             instance->consumer_h);
7061         } else {
7062                 megasas_free_fusion_context(instance);
7063         }
7064 }
7065
7066 /**
7067  * megasas_alloc_ctrl_dma_buffers -     Allocate consistent DMA buffers during
7068  *                                      driver load time
7069  *
7070  * @instance:                           Adapter soft instance
7071  *
7072  * @return:                             O for SUCCESS
7073  */
7074 static inline
7075 int megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance)
7076 {
7077         struct pci_dev *pdev = instance->pdev;
7078         struct fusion_context *fusion = instance->ctrl_context;
7079
7080         instance->evt_detail = dma_alloc_coherent(&pdev->dev,
7081                         sizeof(struct megasas_evt_detail),
7082                         &instance->evt_detail_h, GFP_KERNEL);
7083
7084         if (!instance->evt_detail) {
7085                 dev_err(&instance->pdev->dev,
7086                         "Failed to allocate event detail buffer\n");
7087                 return -ENOMEM;
7088         }
7089
7090         if (fusion) {
7091                 fusion->ioc_init_request =
7092                         dma_alloc_coherent(&pdev->dev,
7093                                            sizeof(struct MPI2_IOC_INIT_REQUEST),
7094                                            &fusion->ioc_init_request_phys,
7095                                            GFP_KERNEL);
7096
7097                 if (!fusion->ioc_init_request) {
7098                         dev_err(&pdev->dev,
7099                                 "Failed to allocate PD list buffer\n");
7100                         return -ENOMEM;
7101                 }
7102
7103                 instance->snapdump_prop = dma_alloc_coherent(&pdev->dev,
7104                                 sizeof(struct MR_SNAPDUMP_PROPERTIES),
7105                                 &instance->snapdump_prop_h, GFP_KERNEL);
7106
7107                 if (!instance->snapdump_prop)
7108                         dev_err(&pdev->dev,
7109                                 "Failed to allocate snapdump properties buffer\n");
7110
7111                 instance->host_device_list_buf = dma_alloc_coherent(&pdev->dev,
7112                                                         HOST_DEVICE_LIST_SZ,
7113                                                         &instance->host_device_list_buf_h,
7114                                                         GFP_KERNEL);
7115
7116                 if (!instance->host_device_list_buf) {
7117                         dev_err(&pdev->dev,
7118                                 "Failed to allocate targetid list buffer\n");
7119                         return -ENOMEM;
7120                 }
7121
7122         }
7123
7124         instance->pd_list_buf =
7125                 dma_alloc_coherent(&pdev->dev,
7126                                      MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
7127                                      &instance->pd_list_buf_h, GFP_KERNEL);
7128
7129         if (!instance->pd_list_buf) {
7130                 dev_err(&pdev->dev, "Failed to allocate PD list buffer\n");
7131                 return -ENOMEM;
7132         }
7133
7134         instance->ctrl_info_buf =
7135                 dma_alloc_coherent(&pdev->dev,
7136                                      sizeof(struct megasas_ctrl_info),
7137                                      &instance->ctrl_info_buf_h, GFP_KERNEL);
7138
7139         if (!instance->ctrl_info_buf) {
7140                 dev_err(&pdev->dev,
7141                         "Failed to allocate controller info buffer\n");
7142                 return -ENOMEM;
7143         }
7144
7145         instance->ld_list_buf =
7146                 dma_alloc_coherent(&pdev->dev,
7147                                      sizeof(struct MR_LD_LIST),
7148                                      &instance->ld_list_buf_h, GFP_KERNEL);
7149
7150         if (!instance->ld_list_buf) {
7151                 dev_err(&pdev->dev, "Failed to allocate LD list buffer\n");
7152                 return -ENOMEM;
7153         }
7154
7155         instance->ld_targetid_list_buf =
7156                 dma_alloc_coherent(&pdev->dev,
7157                                 sizeof(struct MR_LD_TARGETID_LIST),
7158                                 &instance->ld_targetid_list_buf_h, GFP_KERNEL);
7159
7160         if (!instance->ld_targetid_list_buf) {
7161                 dev_err(&pdev->dev,
7162                         "Failed to allocate LD targetid list buffer\n");
7163                 return -ENOMEM;
7164         }
7165
7166         if (!reset_devices) {
7167                 instance->system_info_buf =
7168                         dma_alloc_coherent(&pdev->dev,
7169                                         sizeof(struct MR_DRV_SYSTEM_INFO),
7170                                         &instance->system_info_h, GFP_KERNEL);
7171                 instance->pd_info =
7172                         dma_alloc_coherent(&pdev->dev,
7173                                         sizeof(struct MR_PD_INFO),
7174                                         &instance->pd_info_h, GFP_KERNEL);
7175                 instance->tgt_prop =
7176                         dma_alloc_coherent(&pdev->dev,
7177                                         sizeof(struct MR_TARGET_PROPERTIES),
7178                                         &instance->tgt_prop_h, GFP_KERNEL);
7179                 instance->crash_dump_buf =
7180                         dma_alloc_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE,
7181                                         &instance->crash_dump_h, GFP_KERNEL);
7182
7183                 if (!instance->system_info_buf)
7184                         dev_err(&instance->pdev->dev,
7185                                 "Failed to allocate system info buffer\n");
7186
7187                 if (!instance->pd_info)
7188                         dev_err(&instance->pdev->dev,
7189                                 "Failed to allocate pd_info buffer\n");
7190
7191                 if (!instance->tgt_prop)
7192                         dev_err(&instance->pdev->dev,
7193                                 "Failed to allocate tgt_prop buffer\n");
7194
7195                 if (!instance->crash_dump_buf)
7196                         dev_err(&instance->pdev->dev,
7197                                 "Failed to allocate crash dump buffer\n");
7198         }
7199
7200         return 0;
7201 }
7202
7203 /*
7204  * megasas_free_ctrl_dma_buffers -      Free consistent DMA buffers allocated
7205  *                                      during driver load time
7206  *
7207  * @instance-                           Adapter soft instance
7208  *
7209  */
7210 static inline
7211 void megasas_free_ctrl_dma_buffers(struct megasas_instance *instance)
7212 {
7213         struct pci_dev *pdev = instance->pdev;
7214         struct fusion_context *fusion = instance->ctrl_context;
7215
7216         if (instance->evt_detail)
7217                 dma_free_coherent(&pdev->dev, sizeof(struct megasas_evt_detail),
7218                                     instance->evt_detail,
7219                                     instance->evt_detail_h);
7220
7221         if (fusion && fusion->ioc_init_request)
7222                 dma_free_coherent(&pdev->dev,
7223                                   sizeof(struct MPI2_IOC_INIT_REQUEST),
7224                                   fusion->ioc_init_request,
7225                                   fusion->ioc_init_request_phys);
7226
7227         if (instance->pd_list_buf)
7228                 dma_free_coherent(&pdev->dev,
7229                                     MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
7230                                     instance->pd_list_buf,
7231                                     instance->pd_list_buf_h);
7232
7233         if (instance->ld_list_buf)
7234                 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_LIST),
7235                                     instance->ld_list_buf,
7236                                     instance->ld_list_buf_h);
7237
7238         if (instance->ld_targetid_list_buf)
7239                 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_TARGETID_LIST),
7240                                     instance->ld_targetid_list_buf,
7241                                     instance->ld_targetid_list_buf_h);
7242
7243         if (instance->ctrl_info_buf)
7244                 dma_free_coherent(&pdev->dev, sizeof(struct megasas_ctrl_info),
7245                                     instance->ctrl_info_buf,
7246                                     instance->ctrl_info_buf_h);
7247
7248         if (instance->system_info_buf)
7249                 dma_free_coherent(&pdev->dev, sizeof(struct MR_DRV_SYSTEM_INFO),
7250                                     instance->system_info_buf,
7251                                     instance->system_info_h);
7252
7253         if (instance->pd_info)
7254                 dma_free_coherent(&pdev->dev, sizeof(struct MR_PD_INFO),
7255                                     instance->pd_info, instance->pd_info_h);
7256
7257         if (instance->tgt_prop)
7258                 dma_free_coherent(&pdev->dev, sizeof(struct MR_TARGET_PROPERTIES),
7259                                     instance->tgt_prop, instance->tgt_prop_h);
7260
7261         if (instance->crash_dump_buf)
7262                 dma_free_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE,
7263                                     instance->crash_dump_buf,
7264                                     instance->crash_dump_h);
7265
7266         if (instance->snapdump_prop)
7267                 dma_free_coherent(&pdev->dev,
7268                                   sizeof(struct MR_SNAPDUMP_PROPERTIES),
7269                                   instance->snapdump_prop,
7270                                   instance->snapdump_prop_h);
7271
7272         if (instance->host_device_list_buf)
7273                 dma_free_coherent(&pdev->dev,
7274                                   HOST_DEVICE_LIST_SZ,
7275                                   instance->host_device_list_buf,
7276                                   instance->host_device_list_buf_h);
7277
7278 }
7279
7280 /*
7281  * megasas_init_ctrl_params -           Initialize controller's instance
7282  *                                      parameters before FW init
7283  * @instance -                          Adapter soft instance
7284  * @return -                            void
7285  */
7286 static inline void megasas_init_ctrl_params(struct megasas_instance *instance)
7287 {
7288         instance->fw_crash_state = UNAVAILABLE;
7289
7290         megasas_poll_wait_aen = 0;
7291         instance->issuepend_done = 1;
7292         atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
7293
7294         /*
7295          * Initialize locks and queues
7296          */
7297         INIT_LIST_HEAD(&instance->cmd_pool);
7298         INIT_LIST_HEAD(&instance->internal_reset_pending_q);
7299
7300         atomic_set(&instance->fw_outstanding, 0);
7301         atomic64_set(&instance->total_io_count, 0);
7302
7303         init_waitqueue_head(&instance->int_cmd_wait_q);
7304         init_waitqueue_head(&instance->abort_cmd_wait_q);
7305
7306         spin_lock_init(&instance->crashdump_lock);
7307         spin_lock_init(&instance->mfi_pool_lock);
7308         spin_lock_init(&instance->hba_lock);
7309         spin_lock_init(&instance->stream_lock);
7310         spin_lock_init(&instance->completion_lock);
7311
7312         mutex_init(&instance->reset_mutex);
7313
7314         if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
7315             (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY))
7316                 instance->flag_ieee = 1;
7317
7318         megasas_dbg_lvl = 0;
7319         instance->flag = 0;
7320         instance->unload = 1;
7321         instance->last_time = 0;
7322         instance->disableOnlineCtrlReset = 1;
7323         instance->UnevenSpanSupport = 0;
7324         instance->smp_affinity_enable = smp_affinity_enable ? true : false;
7325         instance->msix_load_balance = false;
7326
7327         if (instance->adapter_type != MFI_SERIES)
7328                 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
7329         else
7330                 INIT_WORK(&instance->work_init, process_fw_state_change_wq);
7331 }
7332
7333 /**
7334  * megasas_probe_one -  PCI hotplug entry point
7335  * @pdev:               PCI device structure
7336  * @id:                 PCI ids of supported hotplugged adapter
7337  */
7338 static int megasas_probe_one(struct pci_dev *pdev,
7339                              const struct pci_device_id *id)
7340 {
7341         int rval, pos;
7342         struct Scsi_Host *host;
7343         struct megasas_instance *instance;
7344         u16 control = 0;
7345
7346         switch (pdev->device) {
7347         case PCI_DEVICE_ID_LSI_AERO_10E0:
7348         case PCI_DEVICE_ID_LSI_AERO_10E3:
7349         case PCI_DEVICE_ID_LSI_AERO_10E4:
7350         case PCI_DEVICE_ID_LSI_AERO_10E7:
7351                 dev_err(&pdev->dev, "Adapter is in non secure mode\n");
7352                 return 1;
7353         case PCI_DEVICE_ID_LSI_AERO_10E1:
7354         case PCI_DEVICE_ID_LSI_AERO_10E5:
7355                 dev_info(&pdev->dev, "Adapter is in configurable secure mode\n");
7356                 break;
7357         }
7358
7359         /* Reset MSI-X in the kdump kernel */
7360         if (reset_devices) {
7361                 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
7362                 if (pos) {
7363                         pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS,
7364                                              &control);
7365                         if (control & PCI_MSIX_FLAGS_ENABLE) {
7366                                 dev_info(&pdev->dev, "resetting MSI-X\n");
7367                                 pci_write_config_word(pdev,
7368                                                       pos + PCI_MSIX_FLAGS,
7369                                                       control &
7370                                                       ~PCI_MSIX_FLAGS_ENABLE);
7371                         }
7372                 }
7373         }
7374
7375         /*
7376          * PCI prepping: enable device set bus mastering and dma mask
7377          */
7378         rval = pci_enable_device_mem(pdev);
7379
7380         if (rval) {
7381                 return rval;
7382         }
7383
7384         pci_set_master(pdev);
7385
7386         host = scsi_host_alloc(&megasas_template,
7387                                sizeof(struct megasas_instance));
7388
7389         if (!host) {
7390                 dev_printk(KERN_DEBUG, &pdev->dev, "scsi_host_alloc failed\n");
7391                 goto fail_alloc_instance;
7392         }
7393
7394         instance = (struct megasas_instance *)host->hostdata;
7395         memset(instance, 0, sizeof(*instance));
7396         atomic_set(&instance->fw_reset_no_pci_access, 0);
7397
7398         /*
7399          * Initialize PCI related and misc parameters
7400          */
7401         instance->pdev = pdev;
7402         instance->host = host;
7403         instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
7404         instance->init_id = MEGASAS_DEFAULT_INIT_ID;
7405
7406         megasas_set_adapter_type(instance);
7407
7408         /*
7409          * Initialize MFI Firmware
7410          */
7411         if (megasas_init_fw(instance))
7412                 goto fail_init_mfi;
7413
7414         if (instance->requestorId) {
7415                 if (instance->PlasmaFW111) {
7416                         instance->vf_affiliation_111 =
7417                                 dma_alloc_coherent(&pdev->dev,
7418                                         sizeof(struct MR_LD_VF_AFFILIATION_111),
7419                                         &instance->vf_affiliation_111_h,
7420                                         GFP_KERNEL);
7421                         if (!instance->vf_affiliation_111)
7422                                 dev_warn(&pdev->dev, "Can't allocate "
7423                                        "memory for VF affiliation buffer\n");
7424                 } else {
7425                         instance->vf_affiliation =
7426                                 dma_alloc_coherent(&pdev->dev,
7427                                         (MAX_LOGICAL_DRIVES + 1) *
7428                                         sizeof(struct MR_LD_VF_AFFILIATION),
7429                                         &instance->vf_affiliation_h,
7430                                         GFP_KERNEL);
7431                         if (!instance->vf_affiliation)
7432                                 dev_warn(&pdev->dev, "Can't allocate "
7433                                        "memory for VF affiliation buffer\n");
7434                 }
7435         }
7436
7437         /*
7438          * Store instance in PCI softstate
7439          */
7440         pci_set_drvdata(pdev, instance);
7441
7442         /*
7443          * Add this controller to megasas_mgmt_info structure so that it
7444          * can be exported to management applications
7445          */
7446         megasas_mgmt_info.count++;
7447         megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
7448         megasas_mgmt_info.max_index++;
7449
7450         /*
7451          * Register with SCSI mid-layer
7452          */
7453         if (megasas_io_attach(instance))
7454                 goto fail_io_attach;
7455
7456         instance->unload = 0;
7457         /*
7458          * Trigger SCSI to scan our drives
7459          */
7460         if (!instance->enable_fw_dev_list ||
7461             (instance->host_device_list_buf->count > 0))
7462                 scsi_scan_host(host);
7463
7464         /*
7465          * Initiate AEN (Asynchronous Event Notification)
7466          */
7467         if (megasas_start_aen(instance)) {
7468                 dev_printk(KERN_DEBUG, &pdev->dev, "start aen failed\n");
7469                 goto fail_start_aen;
7470         }
7471
7472         megasas_setup_debugfs(instance);
7473
7474         /* Get current SR-IOV LD/VF affiliation */
7475         if (instance->requestorId)
7476                 megasas_get_ld_vf_affiliation(instance, 1);
7477
7478         return 0;
7479
7480 fail_start_aen:
7481 fail_io_attach:
7482         megasas_mgmt_info.count--;
7483         megasas_mgmt_info.max_index--;
7484         megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
7485
7486         instance->instancet->disable_intr(instance);
7487         megasas_destroy_irqs(instance);
7488
7489         if (instance->adapter_type != MFI_SERIES)
7490                 megasas_release_fusion(instance);
7491         else
7492                 megasas_release_mfi(instance);
7493         if (instance->msix_vectors)
7494                 pci_free_irq_vectors(instance->pdev);
7495 fail_init_mfi:
7496         scsi_host_put(host);
7497 fail_alloc_instance:
7498         pci_disable_device(pdev);
7499
7500         return -ENODEV;
7501 }
7502
7503 /**
7504  * megasas_flush_cache -        Requests FW to flush all its caches
7505  * @instance:                   Adapter soft state
7506  */
7507 static void megasas_flush_cache(struct megasas_instance *instance)
7508 {
7509         struct megasas_cmd *cmd;
7510         struct megasas_dcmd_frame *dcmd;
7511
7512         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
7513                 return;
7514
7515         cmd = megasas_get_cmd(instance);
7516
7517         if (!cmd)
7518                 return;
7519
7520         dcmd = &cmd->frame->dcmd;
7521
7522         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
7523
7524         dcmd->cmd = MFI_CMD_DCMD;
7525         dcmd->cmd_status = 0x0;
7526         dcmd->sge_count = 0;
7527         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
7528         dcmd->timeout = 0;
7529         dcmd->pad_0 = 0;
7530         dcmd->data_xfer_len = 0;
7531         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH);
7532         dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
7533
7534         if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
7535                         != DCMD_SUCCESS) {
7536                 dev_err(&instance->pdev->dev,
7537                         "return from %s %d\n", __func__, __LINE__);
7538                 return;
7539         }
7540
7541         megasas_return_cmd(instance, cmd);
7542 }
7543
7544 /**
7545  * megasas_shutdown_controller -        Instructs FW to shutdown the controller
7546  * @instance:                           Adapter soft state
7547  * @opcode:                             Shutdown/Hibernate
7548  */
7549 static void megasas_shutdown_controller(struct megasas_instance *instance,
7550                                         u32 opcode)
7551 {
7552         struct megasas_cmd *cmd;
7553         struct megasas_dcmd_frame *dcmd;
7554
7555         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
7556                 return;
7557
7558         cmd = megasas_get_cmd(instance);
7559
7560         if (!cmd)
7561                 return;
7562
7563         if (instance->aen_cmd)
7564                 megasas_issue_blocked_abort_cmd(instance,
7565                         instance->aen_cmd, MFI_IO_TIMEOUT_SECS);
7566         if (instance->map_update_cmd)
7567                 megasas_issue_blocked_abort_cmd(instance,
7568                         instance->map_update_cmd, MFI_IO_TIMEOUT_SECS);
7569         if (instance->jbod_seq_cmd)
7570                 megasas_issue_blocked_abort_cmd(instance,
7571                         instance->jbod_seq_cmd, MFI_IO_TIMEOUT_SECS);
7572
7573         dcmd = &cmd->frame->dcmd;
7574
7575         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
7576
7577         dcmd->cmd = MFI_CMD_DCMD;
7578         dcmd->cmd_status = 0x0;
7579         dcmd->sge_count = 0;
7580         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
7581         dcmd->timeout = 0;
7582         dcmd->pad_0 = 0;
7583         dcmd->data_xfer_len = 0;
7584         dcmd->opcode = cpu_to_le32(opcode);
7585
7586         if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
7587                         != DCMD_SUCCESS) {
7588                 dev_err(&instance->pdev->dev,
7589                         "return from %s %d\n", __func__, __LINE__);
7590                 return;
7591         }
7592
7593         megasas_return_cmd(instance, cmd);
7594 }
7595
7596 /**
7597  * megasas_suspend -    driver suspend entry point
7598  * @dev:                Device structure
7599  */
7600 static int __maybe_unused
7601 megasas_suspend(struct device *dev)
7602 {
7603         struct megasas_instance *instance;
7604
7605         instance = dev_get_drvdata(dev);
7606
7607         if (!instance)
7608                 return 0;
7609
7610         instance->unload = 1;
7611
7612         dev_info(dev, "%s is called\n", __func__);
7613
7614         /* Shutdown SR-IOV heartbeat timer */
7615         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7616                 del_timer_sync(&instance->sriov_heartbeat_timer);
7617
7618         /* Stop the FW fault detection watchdog */
7619         if (instance->adapter_type != MFI_SERIES)
7620                 megasas_fusion_stop_watchdog(instance);
7621
7622         megasas_flush_cache(instance);
7623         megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
7624
7625         /* cancel the delayed work if this work still in queue */
7626         if (instance->ev != NULL) {
7627                 struct megasas_aen_event *ev = instance->ev;
7628                 cancel_delayed_work_sync(&ev->hotplug_work);
7629                 instance->ev = NULL;
7630         }
7631
7632         tasklet_kill(&instance->isr_tasklet);
7633
7634         pci_set_drvdata(instance->pdev, instance);
7635         instance->instancet->disable_intr(instance);
7636
7637         megasas_destroy_irqs(instance);
7638
7639         if (instance->msix_vectors)
7640                 pci_free_irq_vectors(instance->pdev);
7641
7642         return 0;
7643 }
7644
7645 /**
7646  * megasas_resume-      driver resume entry point
7647  * @dev:                Device structure
7648  */
7649 static int __maybe_unused
7650 megasas_resume(struct device *dev)
7651 {
7652         int rval;
7653         struct Scsi_Host *host;
7654         struct megasas_instance *instance;
7655         u32 status_reg;
7656
7657         instance = dev_get_drvdata(dev);
7658
7659         if (!instance)
7660                 return 0;
7661
7662         host = instance->host;
7663
7664         dev_info(dev, "%s is called\n", __func__);
7665
7666         /*
7667          * We expect the FW state to be READY
7668          */
7669
7670         if (megasas_transition_to_ready(instance, 0)) {
7671                 dev_info(&instance->pdev->dev,
7672                          "Failed to transition controller to ready from %s!\n",
7673                          __func__);
7674                 if (instance->adapter_type != MFI_SERIES) {
7675                         status_reg =
7676                                 instance->instancet->read_fw_status_reg(instance);
7677                         if (!(status_reg & MFI_RESET_ADAPTER) ||
7678                                 ((megasas_adp_reset_wait_for_ready
7679                                 (instance, true, 0)) == FAILED))
7680                                 goto fail_ready_state;
7681                 } else {
7682                         atomic_set(&instance->fw_reset_no_pci_access, 1);
7683                         instance->instancet->adp_reset
7684                                 (instance, instance->reg_set);
7685                         atomic_set(&instance->fw_reset_no_pci_access, 0);
7686
7687                         /* waiting for about 30 seconds before retry */
7688                         ssleep(30);
7689
7690                         if (megasas_transition_to_ready(instance, 0))
7691                                 goto fail_ready_state;
7692                 }
7693
7694                 dev_info(&instance->pdev->dev,
7695                          "FW restarted successfully from %s!\n",
7696                          __func__);
7697         }
7698         if (megasas_set_dma_mask(instance))
7699                 goto fail_set_dma_mask;
7700
7701         /*
7702          * Initialize MFI Firmware
7703          */
7704
7705         atomic_set(&instance->fw_outstanding, 0);
7706         atomic_set(&instance->ldio_outstanding, 0);
7707
7708         /* Now re-enable MSI-X */
7709         if (instance->msix_vectors)
7710                 megasas_alloc_irq_vectors(instance);
7711
7712         if (!instance->msix_vectors) {
7713                 rval = pci_alloc_irq_vectors(instance->pdev, 1, 1,
7714                                              PCI_IRQ_LEGACY);
7715                 if (rval < 0)
7716                         goto fail_reenable_msix;
7717         }
7718
7719         megasas_setup_reply_map(instance);
7720
7721         if (instance->adapter_type != MFI_SERIES) {
7722                 megasas_reset_reply_desc(instance);
7723                 if (megasas_ioc_init_fusion(instance)) {
7724                         megasas_free_cmds(instance);
7725                         megasas_free_cmds_fusion(instance);
7726                         goto fail_init_mfi;
7727                 }
7728                 if (!megasas_get_map_info(instance))
7729                         megasas_sync_map_info(instance);
7730         } else {
7731                 *instance->producer = 0;
7732                 *instance->consumer = 0;
7733                 if (megasas_issue_init_mfi(instance))
7734                         goto fail_init_mfi;
7735         }
7736
7737         if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS)
7738                 goto fail_init_mfi;
7739
7740         tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
7741                      (unsigned long)instance);
7742
7743         if (instance->msix_vectors ?
7744                         megasas_setup_irqs_msix(instance, 0) :
7745                         megasas_setup_irqs_ioapic(instance))
7746                 goto fail_init_mfi;
7747
7748         if (instance->adapter_type != MFI_SERIES)
7749                 megasas_setup_irq_poll(instance);
7750
7751         /* Re-launch SR-IOV heartbeat timer */
7752         if (instance->requestorId) {
7753                 if (!megasas_sriov_start_heartbeat(instance, 0))
7754                         megasas_start_timer(instance);
7755                 else {
7756                         instance->skip_heartbeat_timer_del = 1;
7757                         goto fail_init_mfi;
7758                 }
7759         }
7760
7761         instance->instancet->enable_intr(instance);
7762         megasas_setup_jbod_map(instance);
7763         instance->unload = 0;
7764
7765         /*
7766          * Initiate AEN (Asynchronous Event Notification)
7767          */
7768         if (megasas_start_aen(instance))
7769                 dev_err(&instance->pdev->dev, "Start AEN failed\n");
7770
7771         /* Re-launch FW fault watchdog */
7772         if (instance->adapter_type != MFI_SERIES)
7773                 if (megasas_fusion_start_watchdog(instance) != SUCCESS)
7774                         goto fail_start_watchdog;
7775
7776         return 0;
7777
7778 fail_start_watchdog:
7779         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7780                 del_timer_sync(&instance->sriov_heartbeat_timer);
7781 fail_init_mfi:
7782         megasas_free_ctrl_dma_buffers(instance);
7783         megasas_free_ctrl_mem(instance);
7784         scsi_host_put(host);
7785
7786 fail_reenable_msix:
7787 fail_set_dma_mask:
7788 fail_ready_state:
7789
7790         return -ENODEV;
7791 }
7792
7793 static inline int
7794 megasas_wait_for_adapter_operational(struct megasas_instance *instance)
7795 {
7796         int wait_time = MEGASAS_RESET_WAIT_TIME * 2;
7797         int i;
7798         u8 adp_state;
7799
7800         for (i = 0; i < wait_time; i++) {
7801                 adp_state = atomic_read(&instance->adprecovery);
7802                 if ((adp_state == MEGASAS_HBA_OPERATIONAL) ||
7803                     (adp_state == MEGASAS_HW_CRITICAL_ERROR))
7804                         break;
7805
7806                 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL))
7807                         dev_notice(&instance->pdev->dev, "waiting for controller reset to finish\n");
7808
7809                 msleep(1000);
7810         }
7811
7812         if (adp_state != MEGASAS_HBA_OPERATIONAL) {
7813                 dev_info(&instance->pdev->dev,
7814                          "%s HBA failed to become operational, adp_state %d\n",
7815                          __func__, adp_state);
7816                 return 1;
7817         }
7818
7819         return 0;
7820 }
7821
7822 /**
7823  * megasas_detach_one - PCI hot"un"plug entry point
7824  * @pdev:               PCI device structure
7825  */
7826 static void megasas_detach_one(struct pci_dev *pdev)
7827 {
7828         int i;
7829         struct Scsi_Host *host;
7830         struct megasas_instance *instance;
7831         struct fusion_context *fusion;
7832         u32 pd_seq_map_sz;
7833
7834         instance = pci_get_drvdata(pdev);
7835
7836         if (!instance)
7837                 return;
7838
7839         host = instance->host;
7840         fusion = instance->ctrl_context;
7841
7842         /* Shutdown SR-IOV heartbeat timer */
7843         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7844                 del_timer_sync(&instance->sriov_heartbeat_timer);
7845
7846         /* Stop the FW fault detection watchdog */
7847         if (instance->adapter_type != MFI_SERIES)
7848                 megasas_fusion_stop_watchdog(instance);
7849
7850         if (instance->fw_crash_state != UNAVAILABLE)
7851                 megasas_free_host_crash_buffer(instance);
7852         scsi_remove_host(instance->host);
7853         instance->unload = 1;
7854
7855         if (megasas_wait_for_adapter_operational(instance))
7856                 goto skip_firing_dcmds;
7857
7858         megasas_flush_cache(instance);
7859         megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
7860
7861 skip_firing_dcmds:
7862         /* cancel the delayed work if this work still in queue*/
7863         if (instance->ev != NULL) {
7864                 struct megasas_aen_event *ev = instance->ev;
7865                 cancel_delayed_work_sync(&ev->hotplug_work);
7866                 instance->ev = NULL;
7867         }
7868
7869         /* cancel all wait events */
7870         wake_up_all(&instance->int_cmd_wait_q);
7871
7872         tasklet_kill(&instance->isr_tasklet);
7873
7874         /*
7875          * Take the instance off the instance array. Note that we will not
7876          * decrement the max_index. We let this array be sparse array
7877          */
7878         for (i = 0; i < megasas_mgmt_info.max_index; i++) {
7879                 if (megasas_mgmt_info.instance[i] == instance) {
7880                         megasas_mgmt_info.count--;
7881                         megasas_mgmt_info.instance[i] = NULL;
7882
7883                         break;
7884                 }
7885         }
7886
7887         instance->instancet->disable_intr(instance);
7888
7889         megasas_destroy_irqs(instance);
7890
7891         if (instance->msix_vectors)
7892                 pci_free_irq_vectors(instance->pdev);
7893
7894         if (instance->adapter_type >= VENTURA_SERIES) {
7895                 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i)
7896                         kfree(fusion->stream_detect_by_ld[i]);
7897                 kfree(fusion->stream_detect_by_ld);
7898                 fusion->stream_detect_by_ld = NULL;
7899         }
7900
7901
7902         if (instance->adapter_type != MFI_SERIES) {
7903                 megasas_release_fusion(instance);
7904                         pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
7905                                 (sizeof(struct MR_PD_CFG_SEQ) *
7906                                         (MAX_PHYSICAL_DEVICES - 1));
7907                 for (i = 0; i < 2 ; i++) {
7908                         if (fusion->ld_map[i])
7909                                 dma_free_coherent(&instance->pdev->dev,
7910                                                   fusion->max_map_sz,
7911                                                   fusion->ld_map[i],
7912                                                   fusion->ld_map_phys[i]);
7913                         if (fusion->ld_drv_map[i]) {
7914                                 if (is_vmalloc_addr(fusion->ld_drv_map[i]))
7915                                         vfree(fusion->ld_drv_map[i]);
7916                                 else
7917                                         free_pages((ulong)fusion->ld_drv_map[i],
7918                                                    fusion->drv_map_pages);
7919                         }
7920
7921                         if (fusion->pd_seq_sync[i])
7922                                 dma_free_coherent(&instance->pdev->dev,
7923                                         pd_seq_map_sz,
7924                                         fusion->pd_seq_sync[i],
7925                                         fusion->pd_seq_phys[i]);
7926                 }
7927         } else {
7928                 megasas_release_mfi(instance);
7929         }
7930
7931         if (instance->vf_affiliation)
7932                 dma_free_coherent(&pdev->dev, (MAX_LOGICAL_DRIVES + 1) *
7933                                     sizeof(struct MR_LD_VF_AFFILIATION),
7934                                     instance->vf_affiliation,
7935                                     instance->vf_affiliation_h);
7936
7937         if (instance->vf_affiliation_111)
7938                 dma_free_coherent(&pdev->dev,
7939                                     sizeof(struct MR_LD_VF_AFFILIATION_111),
7940                                     instance->vf_affiliation_111,
7941                                     instance->vf_affiliation_111_h);
7942
7943         if (instance->hb_host_mem)
7944                 dma_free_coherent(&pdev->dev, sizeof(struct MR_CTRL_HB_HOST_MEM),
7945                                     instance->hb_host_mem,
7946                                     instance->hb_host_mem_h);
7947
7948         megasas_free_ctrl_dma_buffers(instance);
7949
7950         megasas_free_ctrl_mem(instance);
7951
7952         megasas_destroy_debugfs(instance);
7953
7954         scsi_host_put(host);
7955
7956         pci_disable_device(pdev);
7957 }
7958
7959 /**
7960  * megasas_shutdown -   Shutdown entry point
7961  * @pdev:               PCI device structure
7962  */
7963 static void megasas_shutdown(struct pci_dev *pdev)
7964 {
7965         struct megasas_instance *instance = pci_get_drvdata(pdev);
7966
7967         if (!instance)
7968                 return;
7969
7970         instance->unload = 1;
7971
7972         if (megasas_wait_for_adapter_operational(instance))
7973                 goto skip_firing_dcmds;
7974
7975         megasas_flush_cache(instance);
7976         megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
7977
7978 skip_firing_dcmds:
7979         instance->instancet->disable_intr(instance);
7980         megasas_destroy_irqs(instance);
7981
7982         if (instance->msix_vectors)
7983                 pci_free_irq_vectors(instance->pdev);
7984 }
7985
7986 /*
7987  * megasas_mgmt_open -  char node "open" entry point
7988  * @inode:      char node inode
7989  * @filep:      char node file
7990  */
7991 static int megasas_mgmt_open(struct inode *inode, struct file *filep)
7992 {
7993         /*
7994          * Allow only those users with admin rights
7995          */
7996         if (!capable(CAP_SYS_ADMIN))
7997                 return -EACCES;
7998
7999         return 0;
8000 }
8001
8002 /*
8003  * megasas_mgmt_fasync -        Async notifier registration from applications
8004  * @fd:         char node file descriptor number
8005  * @filep:      char node file
8006  * @mode:       notifier on/off
8007  *
8008  * This function adds the calling process to a driver global queue. When an
8009  * event occurs, SIGIO will be sent to all processes in this queue.
8010  */
8011 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
8012 {
8013         int rc;
8014
8015         mutex_lock(&megasas_async_queue_mutex);
8016
8017         rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
8018
8019         mutex_unlock(&megasas_async_queue_mutex);
8020
8021         if (rc >= 0) {
8022                 /* For sanity check when we get ioctl */
8023                 filep->private_data = filep;
8024                 return 0;
8025         }
8026
8027         printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
8028
8029         return rc;
8030 }
8031
8032 /*
8033  * megasas_mgmt_poll -  char node "poll" entry point
8034  * @filep:      char node file
8035  * @wait:       Events to poll for
8036  */
8037 static __poll_t megasas_mgmt_poll(struct file *file, poll_table *wait)
8038 {
8039         __poll_t mask;
8040         unsigned long flags;
8041
8042         poll_wait(file, &megasas_poll_wait, wait);
8043         spin_lock_irqsave(&poll_aen_lock, flags);
8044         if (megasas_poll_wait_aen)
8045                 mask = (EPOLLIN | EPOLLRDNORM);
8046         else
8047                 mask = 0;
8048         megasas_poll_wait_aen = 0;
8049         spin_unlock_irqrestore(&poll_aen_lock, flags);
8050         return mask;
8051 }
8052
8053 /*
8054  * megasas_set_crash_dump_params_ioctl:
8055  *              Send CRASH_DUMP_MODE DCMD to all controllers
8056  * @cmd:        MFI command frame
8057  */
8058
8059 static int megasas_set_crash_dump_params_ioctl(struct megasas_cmd *cmd)
8060 {
8061         struct megasas_instance *local_instance;
8062         int i, error = 0;
8063         int crash_support;
8064
8065         crash_support = cmd->frame->dcmd.mbox.w[0];
8066
8067         for (i = 0; i < megasas_mgmt_info.max_index; i++) {
8068                 local_instance = megasas_mgmt_info.instance[i];
8069                 if (local_instance && local_instance->crash_dump_drv_support) {
8070                         if ((atomic_read(&local_instance->adprecovery) ==
8071                                 MEGASAS_HBA_OPERATIONAL) &&
8072                                 !megasas_set_crash_dump_params(local_instance,
8073                                         crash_support)) {
8074                                 local_instance->crash_dump_app_support =
8075                                         crash_support;
8076                                 dev_info(&local_instance->pdev->dev,
8077                                         "Application firmware crash "
8078                                         "dump mode set success\n");
8079                                 error = 0;
8080                         } else {
8081                                 dev_info(&local_instance->pdev->dev,
8082                                         "Application firmware crash "
8083                                         "dump mode set failed\n");
8084                                 error = -1;
8085                         }
8086                 }
8087         }
8088         return error;
8089 }
8090
8091 /**
8092  * megasas_mgmt_fw_ioctl -      Issues management ioctls to FW
8093  * @instance:                   Adapter soft state
8094  * @user_ioc:                   User's ioctl packet
8095  * @ioc:                        ioctl packet
8096  */
8097 static int
8098 megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
8099                       struct megasas_iocpacket __user * user_ioc,
8100                       struct megasas_iocpacket *ioc)
8101 {
8102         struct megasas_sge64 *kern_sge64 = NULL;
8103         struct megasas_sge32 *kern_sge32 = NULL;
8104         struct megasas_cmd *cmd;
8105         void *kbuff_arr[MAX_IOCTL_SGE];
8106         dma_addr_t buf_handle = 0;
8107         int error = 0, i;
8108         void *sense = NULL;
8109         dma_addr_t sense_handle;
8110         void *sense_ptr;
8111         u32 opcode = 0;
8112         int ret = DCMD_SUCCESS;
8113
8114         memset(kbuff_arr, 0, sizeof(kbuff_arr));
8115
8116         if (ioc->sge_count > MAX_IOCTL_SGE) {
8117                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SGE count [%d] >  max limit [%d]\n",
8118                        ioc->sge_count, MAX_IOCTL_SGE);
8119                 return -EINVAL;
8120         }
8121
8122         if ((ioc->frame.hdr.cmd >= MFI_CMD_OP_COUNT) ||
8123             ((ioc->frame.hdr.cmd == MFI_CMD_NVME) &&
8124             !instance->support_nvme_passthru) ||
8125             ((ioc->frame.hdr.cmd == MFI_CMD_TOOLBOX) &&
8126             !instance->support_pci_lane_margining)) {
8127                 dev_err(&instance->pdev->dev,
8128                         "Received invalid ioctl command 0x%x\n",
8129                         ioc->frame.hdr.cmd);
8130                 return -ENOTSUPP;
8131         }
8132
8133         cmd = megasas_get_cmd(instance);
8134         if (!cmd) {
8135                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a cmd packet\n");
8136                 return -ENOMEM;
8137         }
8138
8139         /*
8140          * User's IOCTL packet has 2 frames (maximum). Copy those two
8141          * frames into our cmd's frames. cmd->frame's context will get
8142          * overwritten when we copy from user's frames. So set that value
8143          * alone separately
8144          */
8145         memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
8146         cmd->frame->hdr.context = cpu_to_le32(cmd->index);
8147         cmd->frame->hdr.pad_0 = 0;
8148
8149         cmd->frame->hdr.flags &= (~MFI_FRAME_IEEE);
8150
8151         if (instance->consistent_mask_64bit)
8152                 cmd->frame->hdr.flags |= cpu_to_le16((MFI_FRAME_SGL64 |
8153                                        MFI_FRAME_SENSE64));
8154         else
8155                 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_SGL64 |
8156                                                MFI_FRAME_SENSE64));
8157
8158         if (cmd->frame->hdr.cmd == MFI_CMD_DCMD)
8159                 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
8160
8161         if (opcode == MR_DCMD_CTRL_SHUTDOWN) {
8162                 mutex_lock(&instance->reset_mutex);
8163                 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS) {
8164                         megasas_return_cmd(instance, cmd);
8165                         mutex_unlock(&instance->reset_mutex);
8166                         return -1;
8167                 }
8168                 mutex_unlock(&instance->reset_mutex);
8169         }
8170
8171         if (opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) {
8172                 error = megasas_set_crash_dump_params_ioctl(cmd);
8173                 megasas_return_cmd(instance, cmd);
8174                 return error;
8175         }
8176
8177         /*
8178          * The management interface between applications and the fw uses
8179          * MFI frames. E.g, RAID configuration changes, LD property changes
8180          * etc are accomplishes through different kinds of MFI frames. The
8181          * driver needs to care only about substituting user buffers with
8182          * kernel buffers in SGLs. The location of SGL is embedded in the
8183          * struct iocpacket itself.
8184          */
8185         if (instance->consistent_mask_64bit)
8186                 kern_sge64 = (struct megasas_sge64 *)
8187                         ((unsigned long)cmd->frame + ioc->sgl_off);
8188         else
8189                 kern_sge32 = (struct megasas_sge32 *)
8190                         ((unsigned long)cmd->frame + ioc->sgl_off);
8191
8192         /*
8193          * For each user buffer, create a mirror buffer and copy in
8194          */
8195         for (i = 0; i < ioc->sge_count; i++) {
8196                 if (!ioc->sgl[i].iov_len)
8197                         continue;
8198
8199                 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
8200                                                     ioc->sgl[i].iov_len,
8201                                                     &buf_handle, GFP_KERNEL);
8202                 if (!kbuff_arr[i]) {
8203                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc "
8204                                "kernel SGL buffer for IOCTL\n");
8205                         error = -ENOMEM;
8206                         goto out;
8207                 }
8208
8209                 /*
8210                  * We don't change the dma_coherent_mask, so
8211                  * dma_alloc_coherent only returns 32bit addresses
8212                  */
8213                 if (instance->consistent_mask_64bit) {
8214                         kern_sge64[i].phys_addr = cpu_to_le64(buf_handle);
8215                         kern_sge64[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
8216                 } else {
8217                         kern_sge32[i].phys_addr = cpu_to_le32(buf_handle);
8218                         kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
8219                 }
8220
8221                 /*
8222                  * We created a kernel buffer corresponding to the
8223                  * user buffer. Now copy in from the user buffer
8224                  */
8225                 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
8226                                    (u32) (ioc->sgl[i].iov_len))) {
8227                         error = -EFAULT;
8228                         goto out;
8229                 }
8230         }
8231
8232         if (ioc->sense_len) {
8233                 /* make sure the pointer is part of the frame */
8234                 if (ioc->sense_off >
8235                     (sizeof(union megasas_frame) - sizeof(__le64))) {
8236                         error = -EINVAL;
8237                         goto out;
8238                 }
8239
8240                 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
8241                                              &sense_handle, GFP_KERNEL);
8242                 if (!sense) {
8243                         error = -ENOMEM;
8244                         goto out;
8245                 }
8246
8247                 /* always store 64 bits regardless of addressing */
8248                 sense_ptr = (void *)cmd->frame + ioc->sense_off;
8249                 put_unaligned_le64(sense_handle, sense_ptr);
8250         }
8251
8252         /*
8253          * Set the sync_cmd flag so that the ISR knows not to complete this
8254          * cmd to the SCSI mid-layer
8255          */
8256         cmd->sync_cmd = 1;
8257
8258         ret = megasas_issue_blocked_cmd(instance, cmd, 0);
8259         switch (ret) {
8260         case DCMD_INIT:
8261         case DCMD_BUSY:
8262                 cmd->sync_cmd = 0;
8263                 dev_err(&instance->pdev->dev,
8264                         "return -EBUSY from %s %d cmd 0x%x opcode 0x%x cmd->cmd_status_drv 0x%x\n",
8265                          __func__, __LINE__, cmd->frame->hdr.cmd, opcode,
8266                          cmd->cmd_status_drv);
8267                 error = -EBUSY;
8268                 goto out;
8269         }
8270
8271         cmd->sync_cmd = 0;
8272
8273         if (instance->unload == 1) {
8274                 dev_info(&instance->pdev->dev, "Driver unload is in progress "
8275                         "don't submit data to application\n");
8276                 goto out;
8277         }
8278         /*
8279          * copy out the kernel buffers to user buffers
8280          */
8281         for (i = 0; i < ioc->sge_count; i++) {
8282                 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
8283                                  ioc->sgl[i].iov_len)) {
8284                         error = -EFAULT;
8285                         goto out;
8286                 }
8287         }
8288
8289         /*
8290          * copy out the sense
8291          */
8292         if (ioc->sense_len) {
8293                 void __user *uptr;
8294                 /*
8295                  * sense_ptr points to the location that has the user
8296                  * sense buffer address
8297                  */
8298                 sense_ptr = (void *)ioc->frame.raw + ioc->sense_off;
8299                 if (in_compat_syscall())
8300                         uptr = compat_ptr(get_unaligned((compat_uptr_t *)
8301                                                         sense_ptr));
8302                 else
8303                         uptr = get_unaligned((void __user **)sense_ptr);
8304
8305                 if (copy_to_user(uptr, sense, ioc->sense_len)) {
8306                         dev_err(&instance->pdev->dev, "Failed to copy out to user "
8307                                         "sense data\n");
8308                         error = -EFAULT;
8309                         goto out;
8310                 }
8311         }
8312
8313         /*
8314          * copy the status codes returned by the fw
8315          */
8316         if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
8317                          &cmd->frame->hdr.cmd_status, sizeof(u8))) {
8318                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error copying out cmd_status\n");
8319                 error = -EFAULT;
8320         }
8321
8322 out:
8323         if (sense) {
8324                 dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
8325                                     sense, sense_handle);
8326         }
8327
8328         for (i = 0; i < ioc->sge_count; i++) {
8329                 if (kbuff_arr[i]) {
8330                         if (instance->consistent_mask_64bit)
8331                                 dma_free_coherent(&instance->pdev->dev,
8332                                         le32_to_cpu(kern_sge64[i].length),
8333                                         kbuff_arr[i],
8334                                         le64_to_cpu(kern_sge64[i].phys_addr));
8335                         else
8336                                 dma_free_coherent(&instance->pdev->dev,
8337                                         le32_to_cpu(kern_sge32[i].length),
8338                                         kbuff_arr[i],
8339                                         le32_to_cpu(kern_sge32[i].phys_addr));
8340                         kbuff_arr[i] = NULL;
8341                 }
8342         }
8343
8344         megasas_return_cmd(instance, cmd);
8345         return error;
8346 }
8347
8348 static struct megasas_iocpacket *
8349 megasas_compat_iocpacket_get_user(void __user *arg)
8350 {
8351         struct megasas_iocpacket *ioc;
8352         struct compat_megasas_iocpacket __user *cioc = arg;
8353         size_t size;
8354         int err = -EFAULT;
8355         int i;
8356
8357         ioc = kzalloc(sizeof(*ioc), GFP_KERNEL);
8358         if (!ioc)
8359                 return ERR_PTR(-ENOMEM);
8360         size = offsetof(struct megasas_iocpacket, frame) + sizeof(ioc->frame);
8361         if (copy_from_user(ioc, arg, size))
8362                 goto out;
8363
8364         for (i = 0; i < MAX_IOCTL_SGE; i++) {
8365                 compat_uptr_t iov_base;
8366
8367                 if (get_user(iov_base, &cioc->sgl[i].iov_base) ||
8368                     get_user(ioc->sgl[i].iov_len, &cioc->sgl[i].iov_len))
8369                         goto out;
8370
8371                 ioc->sgl[i].iov_base = compat_ptr(iov_base);
8372         }
8373
8374         return ioc;
8375 out:
8376         kfree(ioc);
8377         return ERR_PTR(err);
8378 }
8379
8380 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
8381 {
8382         struct megasas_iocpacket __user *user_ioc =
8383             (struct megasas_iocpacket __user *)arg;
8384         struct megasas_iocpacket *ioc;
8385         struct megasas_instance *instance;
8386         int error;
8387
8388         if (in_compat_syscall())
8389                 ioc = megasas_compat_iocpacket_get_user(user_ioc);
8390         else
8391                 ioc = memdup_user(user_ioc, sizeof(struct megasas_iocpacket));
8392
8393         if (IS_ERR(ioc))
8394                 return PTR_ERR(ioc);
8395
8396         instance = megasas_lookup_instance(ioc->host_no);
8397         if (!instance) {
8398                 error = -ENODEV;
8399                 goto out_kfree_ioc;
8400         }
8401
8402         /* Block ioctls in VF mode */
8403         if (instance->requestorId && !allow_vf_ioctls) {
8404                 error = -ENODEV;
8405                 goto out_kfree_ioc;
8406         }
8407
8408         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
8409                 dev_err(&instance->pdev->dev, "Controller in crit error\n");
8410                 error = -ENODEV;
8411                 goto out_kfree_ioc;
8412         }
8413
8414         if (instance->unload == 1) {
8415                 error = -ENODEV;
8416                 goto out_kfree_ioc;
8417         }
8418
8419         if (down_interruptible(&instance->ioctl_sem)) {
8420                 error = -ERESTARTSYS;
8421                 goto out_kfree_ioc;
8422         }
8423
8424         if  (megasas_wait_for_adapter_operational(instance)) {
8425                 error = -ENODEV;
8426                 goto out_up;
8427         }
8428
8429         error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
8430 out_up:
8431         up(&instance->ioctl_sem);
8432
8433 out_kfree_ioc:
8434         kfree(ioc);
8435         return error;
8436 }
8437
8438 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
8439 {
8440         struct megasas_instance *instance;
8441         struct megasas_aen aen;
8442         int error;
8443
8444         if (file->private_data != file) {
8445                 printk(KERN_DEBUG "megasas: fasync_helper was not "
8446                        "called first\n");
8447                 return -EINVAL;
8448         }
8449
8450         if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
8451                 return -EFAULT;
8452
8453         instance = megasas_lookup_instance(aen.host_no);
8454
8455         if (!instance)
8456                 return -ENODEV;
8457
8458         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
8459                 return -ENODEV;
8460         }
8461
8462         if (instance->unload == 1) {
8463                 return -ENODEV;
8464         }
8465
8466         if  (megasas_wait_for_adapter_operational(instance))
8467                 return -ENODEV;
8468
8469         mutex_lock(&instance->reset_mutex);
8470         error = megasas_register_aen(instance, aen.seq_num,
8471                                      aen.class_locale_word);
8472         mutex_unlock(&instance->reset_mutex);
8473         return error;
8474 }
8475
8476 /**
8477  * megasas_mgmt_ioctl - char node ioctl entry point
8478  * @file:       char device file pointer
8479  * @cmd:        ioctl command
8480  * @arg:        ioctl command arguments address
8481  */
8482 static long
8483 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
8484 {
8485         switch (cmd) {
8486         case MEGASAS_IOC_FIRMWARE:
8487                 return megasas_mgmt_ioctl_fw(file, arg);
8488
8489         case MEGASAS_IOC_GET_AEN:
8490                 return megasas_mgmt_ioctl_aen(file, arg);
8491         }
8492
8493         return -ENOTTY;
8494 }
8495
8496 #ifdef CONFIG_COMPAT
8497 static long
8498 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
8499                           unsigned long arg)
8500 {
8501         switch (cmd) {
8502         case MEGASAS_IOC_FIRMWARE32:
8503                 return megasas_mgmt_ioctl_fw(file, arg);
8504         case MEGASAS_IOC_GET_AEN:
8505                 return megasas_mgmt_ioctl_aen(file, arg);
8506         }
8507
8508         return -ENOTTY;
8509 }
8510 #endif
8511
8512 /*
8513  * File operations structure for management interface
8514  */
8515 static const struct file_operations megasas_mgmt_fops = {
8516         .owner = THIS_MODULE,
8517         .open = megasas_mgmt_open,
8518         .fasync = megasas_mgmt_fasync,
8519         .unlocked_ioctl = megasas_mgmt_ioctl,
8520         .poll = megasas_mgmt_poll,
8521 #ifdef CONFIG_COMPAT
8522         .compat_ioctl = megasas_mgmt_compat_ioctl,
8523 #endif
8524         .llseek = noop_llseek,
8525 };
8526
8527 static SIMPLE_DEV_PM_OPS(megasas_pm_ops, megasas_suspend, megasas_resume);
8528
8529 /*
8530  * PCI hotplug support registration structure
8531  */
8532 static struct pci_driver megasas_pci_driver = {
8533
8534         .name = "megaraid_sas",
8535         .id_table = megasas_pci_table,
8536         .probe = megasas_probe_one,
8537         .remove = megasas_detach_one,
8538         .driver.pm = &megasas_pm_ops,
8539         .shutdown = megasas_shutdown,
8540 };
8541
8542 /*
8543  * Sysfs driver attributes
8544  */
8545 static ssize_t version_show(struct device_driver *dd, char *buf)
8546 {
8547         return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
8548                         MEGASAS_VERSION);
8549 }
8550 static DRIVER_ATTR_RO(version);
8551
8552 static ssize_t release_date_show(struct device_driver *dd, char *buf)
8553 {
8554         return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n",
8555                 MEGASAS_RELDATE);
8556 }
8557 static DRIVER_ATTR_RO(release_date);
8558
8559 static ssize_t support_poll_for_event_show(struct device_driver *dd, char *buf)
8560 {
8561         return sprintf(buf, "%u\n", support_poll_for_event);
8562 }
8563 static DRIVER_ATTR_RO(support_poll_for_event);
8564
8565 static ssize_t support_device_change_show(struct device_driver *dd, char *buf)
8566 {
8567         return sprintf(buf, "%u\n", support_device_change);
8568 }
8569 static DRIVER_ATTR_RO(support_device_change);
8570
8571 static ssize_t dbg_lvl_show(struct device_driver *dd, char *buf)
8572 {
8573         return sprintf(buf, "%u\n", megasas_dbg_lvl);
8574 }
8575
8576 static ssize_t dbg_lvl_store(struct device_driver *dd, const char *buf,
8577                              size_t count)
8578 {
8579         int retval = count;
8580
8581         if (sscanf(buf, "%u", &megasas_dbg_lvl) < 1) {
8582                 printk(KERN_ERR "megasas: could not set dbg_lvl\n");
8583                 retval = -EINVAL;
8584         }
8585         return retval;
8586 }
8587 static DRIVER_ATTR_RW(dbg_lvl);
8588
8589 static ssize_t
8590 support_nvme_encapsulation_show(struct device_driver *dd, char *buf)
8591 {
8592         return sprintf(buf, "%u\n", support_nvme_encapsulation);
8593 }
8594
8595 static DRIVER_ATTR_RO(support_nvme_encapsulation);
8596
8597 static ssize_t
8598 support_pci_lane_margining_show(struct device_driver *dd, char *buf)
8599 {
8600         return sprintf(buf, "%u\n", support_pci_lane_margining);
8601 }
8602
8603 static DRIVER_ATTR_RO(support_pci_lane_margining);
8604
8605 static inline void megasas_remove_scsi_device(struct scsi_device *sdev)
8606 {
8607         sdev_printk(KERN_INFO, sdev, "SCSI device is removed\n");
8608         scsi_remove_device(sdev);
8609         scsi_device_put(sdev);
8610 }
8611
8612 /**
8613  * megasas_update_device_list - Update the PD and LD device list from FW
8614  *                              after an AEN event notification
8615  * @instance:                   Adapter soft state
8616  * @event_type:                 Indicates type of event (PD or LD event)
8617  *
8618  * @return:                     Success or failure
8619  *
8620  * Issue DCMDs to Firmware to update the internal device list in driver.
8621  * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination
8622  * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list.
8623  */
8624 static
8625 int megasas_update_device_list(struct megasas_instance *instance,
8626                                int event_type)
8627 {
8628         int dcmd_ret = DCMD_SUCCESS;
8629
8630         if (instance->enable_fw_dev_list) {
8631                 dcmd_ret = megasas_host_device_list_query(instance, false);
8632                 if (dcmd_ret != DCMD_SUCCESS)
8633                         goto out;
8634         } else {
8635                 if (event_type & SCAN_PD_CHANNEL) {
8636                         dcmd_ret = megasas_get_pd_list(instance);
8637
8638                         if (dcmd_ret != DCMD_SUCCESS)
8639                                 goto out;
8640                 }
8641
8642                 if (event_type & SCAN_VD_CHANNEL) {
8643                         if (!instance->requestorId ||
8644                             (instance->requestorId &&
8645                              megasas_get_ld_vf_affiliation(instance, 0))) {
8646                                 dcmd_ret = megasas_ld_list_query(instance,
8647                                                 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST);
8648                                 if (dcmd_ret != DCMD_SUCCESS)
8649                                         goto out;
8650                         }
8651                 }
8652         }
8653
8654 out:
8655         return dcmd_ret;
8656 }
8657
8658 /**
8659  * megasas_add_remove_devices - Add/remove devices to SCSI mid-layer
8660  *                              after an AEN event notification
8661  * @instance:                   Adapter soft state
8662  * @scan_type:                  Indicates type of devices (PD/LD) to add
8663  * @return                      void
8664  */
8665 static
8666 void megasas_add_remove_devices(struct megasas_instance *instance,
8667                                 int scan_type)
8668 {
8669         int i, j;
8670         u16 pd_index = 0;
8671         u16 ld_index = 0;
8672         u16 channel = 0, id = 0;
8673         struct Scsi_Host *host;
8674         struct scsi_device *sdev1;
8675         struct MR_HOST_DEVICE_LIST *targetid_list = NULL;
8676         struct MR_HOST_DEVICE_LIST_ENTRY *targetid_entry = NULL;
8677
8678         host = instance->host;
8679
8680         if (instance->enable_fw_dev_list) {
8681                 targetid_list = instance->host_device_list_buf;
8682                 for (i = 0; i < targetid_list->count; i++) {
8683                         targetid_entry = &targetid_list->host_device_list[i];
8684                         if (targetid_entry->flags.u.bits.is_sys_pd) {
8685                                 channel = le16_to_cpu(targetid_entry->target_id) /
8686                                                 MEGASAS_MAX_DEV_PER_CHANNEL;
8687                                 id = le16_to_cpu(targetid_entry->target_id) %
8688                                                 MEGASAS_MAX_DEV_PER_CHANNEL;
8689                         } else {
8690                                 channel = MEGASAS_MAX_PD_CHANNELS +
8691                                           (le16_to_cpu(targetid_entry->target_id) /
8692                                            MEGASAS_MAX_DEV_PER_CHANNEL);
8693                                 id = le16_to_cpu(targetid_entry->target_id) %
8694                                                 MEGASAS_MAX_DEV_PER_CHANNEL;
8695                         }
8696                         sdev1 = scsi_device_lookup(host, channel, id, 0);
8697                         if (!sdev1) {
8698                                 scsi_add_device(host, channel, id, 0);
8699                         } else {
8700                                 scsi_device_put(sdev1);
8701                         }
8702                 }
8703         }
8704
8705         if (scan_type & SCAN_PD_CHANNEL) {
8706                 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
8707                         for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
8708                                 pd_index = i * MEGASAS_MAX_DEV_PER_CHANNEL + j;
8709                                 sdev1 = scsi_device_lookup(host, i, j, 0);
8710                                 if (instance->pd_list[pd_index].driveState ==
8711                                                         MR_PD_STATE_SYSTEM) {
8712                                         if (!sdev1)
8713                                                 scsi_add_device(host, i, j, 0);
8714                                         else
8715                                                 scsi_device_put(sdev1);
8716                                 } else {
8717                                         if (sdev1)
8718                                                 megasas_remove_scsi_device(sdev1);
8719                                 }
8720                         }
8721                 }
8722         }
8723
8724         if (scan_type & SCAN_VD_CHANNEL) {
8725                 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
8726                         for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
8727                                 ld_index = (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
8728                                 sdev1 = scsi_device_lookup(host,
8729                                                 MEGASAS_MAX_PD_CHANNELS + i, j, 0);
8730                                 if (instance->ld_ids[ld_index] != 0xff) {
8731                                         if (!sdev1)
8732                                                 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
8733                                         else
8734                                                 scsi_device_put(sdev1);
8735                                 } else {
8736                                         if (sdev1)
8737                                                 megasas_remove_scsi_device(sdev1);
8738                                 }
8739                         }
8740                 }
8741         }
8742
8743 }
8744
8745 static void
8746 megasas_aen_polling(struct work_struct *work)
8747 {
8748         struct megasas_aen_event *ev =
8749                 container_of(work, struct megasas_aen_event, hotplug_work.work);
8750         struct megasas_instance *instance = ev->instance;
8751         union megasas_evt_class_locale class_locale;
8752         int event_type = 0;
8753         u32 seq_num;
8754         int error;
8755         u8  dcmd_ret = DCMD_SUCCESS;
8756
8757         if (!instance) {
8758                 printk(KERN_ERR "invalid instance!\n");
8759                 kfree(ev);
8760                 return;
8761         }
8762
8763         /* Don't run the event workqueue thread if OCR is running */
8764         mutex_lock(&instance->reset_mutex);
8765
8766         instance->ev = NULL;
8767         if (instance->evt_detail) {
8768                 megasas_decode_evt(instance);
8769
8770                 switch (le32_to_cpu(instance->evt_detail->code)) {
8771
8772                 case MR_EVT_PD_INSERTED:
8773                 case MR_EVT_PD_REMOVED:
8774                         event_type = SCAN_PD_CHANNEL;
8775                         break;
8776
8777                 case MR_EVT_LD_OFFLINE:
8778                 case MR_EVT_CFG_CLEARED:
8779                 case MR_EVT_LD_DELETED:
8780                 case MR_EVT_LD_CREATED:
8781                         event_type = SCAN_VD_CHANNEL;
8782                         break;
8783
8784                 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
8785                 case MR_EVT_FOREIGN_CFG_IMPORTED:
8786                 case MR_EVT_LD_STATE_CHANGE:
8787                         event_type = SCAN_PD_CHANNEL | SCAN_VD_CHANNEL;
8788                         dev_info(&instance->pdev->dev, "scanning for scsi%d...\n",
8789                                 instance->host->host_no);
8790                         break;
8791
8792                 case MR_EVT_CTRL_PROP_CHANGED:
8793                         dcmd_ret = megasas_get_ctrl_info(instance);
8794                         if (dcmd_ret == DCMD_SUCCESS &&
8795                             instance->snapdump_wait_time) {
8796                                 megasas_get_snapdump_properties(instance);
8797                                 dev_info(&instance->pdev->dev,
8798                                          "Snap dump wait time\t: %d\n",
8799                                          instance->snapdump_wait_time);
8800                         }
8801                         break;
8802                 default:
8803                         event_type = 0;
8804                         break;
8805                 }
8806         } else {
8807                 dev_err(&instance->pdev->dev, "invalid evt_detail!\n");
8808                 mutex_unlock(&instance->reset_mutex);
8809                 kfree(ev);
8810                 return;
8811         }
8812
8813         if (event_type)
8814                 dcmd_ret = megasas_update_device_list(instance, event_type);
8815
8816         mutex_unlock(&instance->reset_mutex);
8817
8818         if (event_type && dcmd_ret == DCMD_SUCCESS)
8819                 megasas_add_remove_devices(instance, event_type);
8820
8821         if (dcmd_ret == DCMD_SUCCESS)
8822                 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1;
8823         else
8824                 seq_num = instance->last_seq_num;
8825
8826         /* Register AEN with FW for latest sequence number plus 1 */
8827         class_locale.members.reserved = 0;
8828         class_locale.members.locale = MR_EVT_LOCALE_ALL;
8829         class_locale.members.class = MR_EVT_CLASS_DEBUG;
8830
8831         if (instance->aen_cmd != NULL) {
8832                 kfree(ev);
8833                 return;
8834         }
8835
8836         mutex_lock(&instance->reset_mutex);
8837         error = megasas_register_aen(instance, seq_num,
8838                                         class_locale.word);
8839         if (error)
8840                 dev_err(&instance->pdev->dev,
8841                         "register aen failed error %x\n", error);
8842
8843         mutex_unlock(&instance->reset_mutex);
8844         kfree(ev);
8845 }
8846
8847 /**
8848  * megasas_init - Driver load entry point
8849  */
8850 static int __init megasas_init(void)
8851 {
8852         int rval;
8853
8854         /*
8855          * Booted in kdump kernel, minimize memory footprints by
8856          * disabling few features
8857          */
8858         if (reset_devices) {
8859                 msix_vectors = 1;
8860                 rdpq_enable = 0;
8861                 dual_qdepth_disable = 1;
8862         }
8863
8864         /*
8865          * Announce driver version and other information
8866          */
8867         pr_info("megasas: %s\n", MEGASAS_VERSION);
8868
8869         spin_lock_init(&poll_aen_lock);
8870
8871         support_poll_for_event = 2;
8872         support_device_change = 1;
8873         support_nvme_encapsulation = true;
8874         support_pci_lane_margining = true;
8875
8876         memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
8877
8878         /*
8879          * Register character device node
8880          */
8881         rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
8882
8883         if (rval < 0) {
8884                 printk(KERN_DEBUG "megasas: failed to open device node\n");
8885                 return rval;
8886         }
8887
8888         megasas_mgmt_majorno = rval;
8889
8890         megasas_init_debugfs();
8891
8892         /*
8893          * Register ourselves as PCI hotplug module
8894          */
8895         rval = pci_register_driver(&megasas_pci_driver);
8896
8897         if (rval) {
8898                 printk(KERN_DEBUG "megasas: PCI hotplug registration failed \n");
8899                 goto err_pcidrv;
8900         }
8901
8902         if ((event_log_level < MFI_EVT_CLASS_DEBUG) ||
8903             (event_log_level > MFI_EVT_CLASS_DEAD)) {
8904                 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");
8905                 event_log_level = MFI_EVT_CLASS_CRITICAL;
8906         }
8907
8908         rval = driver_create_file(&megasas_pci_driver.driver,
8909                                   &driver_attr_version);
8910         if (rval)
8911                 goto err_dcf_attr_ver;
8912
8913         rval = driver_create_file(&megasas_pci_driver.driver,
8914                                   &driver_attr_release_date);
8915         if (rval)
8916                 goto err_dcf_rel_date;
8917
8918         rval = driver_create_file(&megasas_pci_driver.driver,
8919                                 &driver_attr_support_poll_for_event);
8920         if (rval)
8921                 goto err_dcf_support_poll_for_event;
8922
8923         rval = driver_create_file(&megasas_pci_driver.driver,
8924                                   &driver_attr_dbg_lvl);
8925         if (rval)
8926                 goto err_dcf_dbg_lvl;
8927         rval = driver_create_file(&megasas_pci_driver.driver,
8928                                 &driver_attr_support_device_change);
8929         if (rval)
8930                 goto err_dcf_support_device_change;
8931
8932         rval = driver_create_file(&megasas_pci_driver.driver,
8933                                   &driver_attr_support_nvme_encapsulation);
8934         if (rval)
8935                 goto err_dcf_support_nvme_encapsulation;
8936
8937         rval = driver_create_file(&megasas_pci_driver.driver,
8938                                   &driver_attr_support_pci_lane_margining);
8939         if (rval)
8940                 goto err_dcf_support_pci_lane_margining;
8941
8942         return rval;
8943
8944 err_dcf_support_pci_lane_margining:
8945         driver_remove_file(&megasas_pci_driver.driver,
8946                            &driver_attr_support_nvme_encapsulation);
8947
8948 err_dcf_support_nvme_encapsulation:
8949         driver_remove_file(&megasas_pci_driver.driver,
8950                            &driver_attr_support_device_change);
8951
8952 err_dcf_support_device_change:
8953         driver_remove_file(&megasas_pci_driver.driver,
8954                            &driver_attr_dbg_lvl);
8955 err_dcf_dbg_lvl:
8956         driver_remove_file(&megasas_pci_driver.driver,
8957                         &driver_attr_support_poll_for_event);
8958 err_dcf_support_poll_for_event:
8959         driver_remove_file(&megasas_pci_driver.driver,
8960                            &driver_attr_release_date);
8961 err_dcf_rel_date:
8962         driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
8963 err_dcf_attr_ver:
8964         pci_unregister_driver(&megasas_pci_driver);
8965 err_pcidrv:
8966         megasas_exit_debugfs();
8967         unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
8968         return rval;
8969 }
8970
8971 /**
8972  * megasas_exit - Driver unload entry point
8973  */
8974 static void __exit megasas_exit(void)
8975 {
8976         driver_remove_file(&megasas_pci_driver.driver,
8977                            &driver_attr_dbg_lvl);
8978         driver_remove_file(&megasas_pci_driver.driver,
8979                         &driver_attr_support_poll_for_event);
8980         driver_remove_file(&megasas_pci_driver.driver,
8981                         &driver_attr_support_device_change);
8982         driver_remove_file(&megasas_pci_driver.driver,
8983                            &driver_attr_release_date);
8984         driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
8985         driver_remove_file(&megasas_pci_driver.driver,
8986                            &driver_attr_support_nvme_encapsulation);
8987         driver_remove_file(&megasas_pci_driver.driver,
8988                            &driver_attr_support_pci_lane_margining);
8989
8990         pci_unregister_driver(&megasas_pci_driver);
8991         megasas_exit_debugfs();
8992         unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
8993 }
8994
8995 module_init(megasas_init);
8996 module_exit(megasas_exit);