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
  41 #include <scsi/scsi.h>
  42 #include <scsi/scsi_cmnd.h>
  43 #include <scsi/scsi_device.h>
  44 #include <scsi/scsi_host.h>
  45 #include <scsi/scsi_tcq.h>
  46 #include <scsi/scsi_dbg.h>
  47 #include "megaraid_sas_fusion.h"
  48 #include "megaraid_sas.h"
  49
  50 /*
  51  * Number of sectors per IO command
  52  * Will be set in megasas_init_mfi if user does not provide
  53  */
  54 static unsigned int max_sectors;
  55 module_param_named(max_sectors, max_sectors, int, 0444);
  56 MODULE_PARM_DESC(max_sectors,
  57         "Maximum number of sectors per IO command");
  58
  59 static int msix_disable;
  60 module_param(msix_disable, int, 0444);
  61 MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0");
  62
  63 static unsigned int msix_vectors;
  64 module_param(msix_vectors, int, 0444);
  65 MODULE_PARM_DESC(msix_vectors, "MSI-X max vector count. Default: Set by FW");
  66
  67 static int allow_vf_ioctls;
  68 module_param(allow_vf_ioctls, int, 0444);
  69 MODULE_PARM_DESC(allow_vf_ioctls, "Allow ioctls in SR-IOV VF mode. Default: 0");
  70
  71 static unsigned int throttlequeuedepth = MEGASAS_THROTTLE_QUEUE_DEPTH;
  72 module_param(throttlequeuedepth, int, 0444);
  73 MODULE_PARM_DESC(throttlequeuedepth,
  74         "Adapter queue depth when throttled due to I/O timeout. Default: 16");
  75
  76 unsigned int resetwaittime = MEGASAS_RESET_WAIT_TIME;
  77 module_param(resetwaittime, int, 0444);
  78 MODULE_PARM_DESC(resetwaittime, "Wait time in (1-180s) after I/O timeout before resetting adapter. Default: 180s");
  79
  80 int smp_affinity_enable = 1;
  81 module_param(smp_affinity_enable, int, 0444);
  82 MODULE_PARM_DESC(smp_affinity_enable, "SMP affinity feature enable/disable Default: enable(1)");
  83
  84 int rdpq_enable = 1;
  85 module_param(rdpq_enable, int, 0444);
  86 MODULE_PARM_DESC(rdpq_enable, "Allocate reply queue in chunks for large queue depth enable/disable Default: enable(1)");
  87
  88 unsigned int dual_qdepth_disable;
  89 module_param(dual_qdepth_disable, int, 0444);
  90 MODULE_PARM_DESC(dual_qdepth_disable, "Disable dual queue depth feature. Default: 0");
  91
  92 unsigned int scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
  93 module_param(scmd_timeout, int, 0444);
  94 MODULE_PARM_DESC(scmd_timeout, "scsi command timeout (10-90s), default 90s. See megasas_reset_timer.");
  95
  96 int perf_mode = -1;
  97 module_param(perf_mode, int, 0444);
  98 MODULE_PARM_DESC(perf_mode, "Performance mode (only for Aero adapters), options:\n\t\t"
  99                 "0 - balanced: High iops and low latency queues are allocated &\n\t\t"
 100                 "interrupt coalescing is enabled only on high iops queues\n\t\t"
 101                 "1 - iops: High iops queues are not allocated &\n\t\t"
 102                 "interrupt coalescing is enabled on all queues\n\t\t"
 103                 "2 - latency: High iops queues are not allocated &\n\t\t"
 104                 "interrupt coalescing is disabled on all queues\n\t\t"
 105                 "default mode is 'balanced'"
 106                 );
 107
 108 int event_log_level = MFI_EVT_CLASS_CRITICAL;
 109 module_param(event_log_level, int, 0644);
 110 MODULE_PARM_DESC(event_log_level, "Asynchronous event logging level- range is: -2(CLASS_DEBUG) to 4(CLASS_DEAD), Default: 2(CLASS_CRITICAL)");
 111
 112 MODULE_LICENSE("GPL");
 113 MODULE_VERSION(MEGASAS_VERSION);
 114 MODULE_AUTHOR("megaraidlinux.pdl@broadcom.com");
 115 MODULE_DESCRIPTION("Broadcom MegaRAID SAS Driver");
 116
 117 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
 118 static int megasas_get_pd_list(struct megasas_instance *instance);
 119 static int megasas_ld_list_query(struct megasas_instance *instance,
 120                                  u8 query_type);
 121 static int megasas_issue_init_mfi(struct megasas_instance *instance);
 122 static int megasas_register_aen(struct megasas_instance *instance,
 123                                 u32 seq_num, u32 class_locale_word);
 124 static void megasas_get_pd_info(struct megasas_instance *instance,
 125                                 struct scsi_device *sdev);
 126
 127 /*
 128  * PCI ID table for all supported controllers
 129  */
 130 static struct pci_device_id megasas_pci_table[] = {
 131
 132         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)},
 133         /* xscale IOP */
 134         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)},
 135         /* ppc IOP */
 136         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)},
 137         /* ppc IOP */
 138         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)},
 139         /* gen2*/
 140         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)},
 141         /* gen2*/
 142         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)},
 143         /* skinny*/
 144         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)},
 145         /* skinny*/
 146         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)},
 147         /* xscale IOP, vega */
 148         {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
 149         /* xscale IOP */
 150         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)},
 151         /* Fusion */
 152         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_PLASMA)},
 153         /* Plasma */
 154         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)},
 155         /* Invader */
 156         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FURY)},
 157         /* Fury */
 158         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER)},
 159         /* Intruder */
 160         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER_24)},
 161         /* Intruder 24 port*/
 162         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_52)},
 163         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_53)},
 164         /* VENTURA */
 165         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA)},
 166         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER)},
 167         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_HARPOON)},
 168         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_TOMCAT)},
 169         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA_4PORT)},
 170         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER_4PORT)},
 171         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E1)},
 172         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E2)},
 173         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E5)},
 174         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E6)},
 175         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E0)},
 176         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E3)},
 177         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E4)},
 178         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E7)},
 179         {}
 180 };
 181
 182 MODULE_DEVICE_TABLE(pci, megasas_pci_table);
 183
 184 static int megasas_mgmt_majorno;
 185 struct megasas_mgmt_info megasas_mgmt_info;
 186 static struct fasync_struct *megasas_async_queue;
 187 static DEFINE_MUTEX(megasas_async_queue_mutex);
 188
 189 static int megasas_poll_wait_aen;
 190 static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait);
 191 static u32 support_poll_for_event;
 192 u32 megasas_dbg_lvl;
 193 static u32 support_device_change;
 194 static bool support_nvme_encapsulation;
 195 static bool support_pci_lane_margining;
 196
 197 /* define lock for aen poll */
 198 spinlock_t poll_aen_lock;
 199
 200 extern struct dentry *megasas_debugfs_root;
 201 extern void megasas_init_debugfs(void);
 202 extern void megasas_exit_debugfs(void);
 203 extern void megasas_setup_debugfs(struct megasas_instance *instance);
 204 extern void megasas_destroy_debugfs(struct megasas_instance *instance);
 205
 206 void
 207 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
 208                      u8 alt_status);
 209 static u32
 210 megasas_read_fw_status_reg_gen2(struct megasas_instance *instance);
 211 static int
 212 megasas_adp_reset_gen2(struct megasas_instance *instance,
 213                        struct megasas_register_set __iomem *reg_set);
 214 static irqreturn_t megasas_isr(int irq, void *devp);
 215 static u32
 216 megasas_init_adapter_mfi(struct megasas_instance *instance);
 217 u32
 218 megasas_build_and_issue_cmd(struct megasas_instance *instance,
 219                             struct scsi_cmnd *scmd);
 220 static void megasas_complete_cmd_dpc(unsigned long instance_addr);
 221 int
 222 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
 223         int seconds);
 224 void megasas_fusion_ocr_wq(struct work_struct *work);
 225 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
 226                                          int initial);
 227 static int
 228 megasas_set_dma_mask(struct megasas_instance *instance);
 229 static int
 230 megasas_alloc_ctrl_mem(struct megasas_instance *instance);
 231 static inline void
 232 megasas_free_ctrl_mem(struct megasas_instance *instance);
 233 static inline int
 234 megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance);
 235 static inline void
 236 megasas_free_ctrl_dma_buffers(struct megasas_instance *instance);
 237 static inline void
 238 megasas_init_ctrl_params(struct megasas_instance *instance);
 239
 240 u32 megasas_readl(struct megasas_instance *instance,
 241                   const volatile void __iomem *addr)
 242 {
 243         u32 i = 0, ret_val;
 244         /*
 245          * Due to a HW errata in Aero controllers, reads to certain
 246          * Fusion registers could intermittently return all zeroes.
 247          * This behavior is transient in nature and subsequent reads will
 248          * return valid value. As a workaround in driver, retry readl for
 249          * upto three times until a non-zero value is read.
 250          */
 251         if (instance->adapter_type == AERO_SERIES) {
 252                 do {
 253                         ret_val = readl(addr);
 254                         i++;
 255                 } while (ret_val == 0 && i < 3);
 256                 return ret_val;
 257         } else {
 258                 return readl(addr);
 259         }
 260 }
 261
 262 /**
 263  * megasas_set_dma_settings -   Populate DMA address, length and flags for DCMDs
 264  * @instance:                   Adapter soft state
 265  * @dcmd:                       DCMD frame inside MFI command
 266  * @dma_addr:                   DMA address of buffer to be passed to FW
 267  * @dma_len:                    Length of DMA buffer to be passed to FW
 268  * @return:                     void
 269  */
 270 void megasas_set_dma_settings(struct megasas_instance *instance,
 271                               struct megasas_dcmd_frame *dcmd,
 272                               dma_addr_t dma_addr, u32 dma_len)
 273 {
 274         if (instance->consistent_mask_64bit) {
 275                 dcmd->sgl.sge64[0].phys_addr = cpu_to_le64(dma_addr);
 276                 dcmd->sgl.sge64[0].length = cpu_to_le32(dma_len);
 277                 dcmd->flags = cpu_to_le16(dcmd->flags | MFI_FRAME_SGL64);
 278
 279         } else {
 280                 dcmd->sgl.sge32[0].phys_addr =
 281                                 cpu_to_le32(lower_32_bits(dma_addr));
 282                 dcmd->sgl.sge32[0].length = cpu_to_le32(dma_len);
 283                 dcmd->flags = cpu_to_le16(dcmd->flags);
 284         }
 285 }
 286
 287 static void
 288 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
 289 {
 290         instance->instancet->fire_cmd(instance,
 291                 cmd->frame_phys_addr, 0, instance->reg_set);
 292         return;
 293 }
 294
 295 /**
 296  * megasas_get_cmd -    Get a command from the free pool
 297  * @instance:           Adapter soft state
 298  *
 299  * Returns a free command from the pool
 300  */
 301 struct megasas_cmd *megasas_get_cmd(struct megasas_instance
 302                                                   *instance)
 303 {
 304         unsigned long flags;
 305         struct megasas_cmd *cmd = NULL;
 306
 307         spin_lock_irqsave(&instance->mfi_pool_lock, flags);
 308
 309         if (!list_empty(&instance->cmd_pool)) {
 310                 cmd = list_entry((&instance->cmd_pool)->next,
 311                                  struct megasas_cmd, list);
 312                 list_del_init(&cmd->list);
 313         } else {
 314                 dev_err(&instance->pdev->dev, "Command pool empty!\n");
 315         }
 316
 317         spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
 318         return cmd;
 319 }
 320
 321 /**
 322  * megasas_return_cmd - Return a cmd to free command pool
 323  * @instance:           Adapter soft state
 324  * @cmd:                Command packet to be returned to free command pool
 325  */
 326 void
 327 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
 328 {
 329         unsigned long flags;
 330         u32 blk_tags;
 331         struct megasas_cmd_fusion *cmd_fusion;
 332         struct fusion_context *fusion = instance->ctrl_context;
 333
 334         /* This flag is used only for fusion adapter.
 335          * Wait for Interrupt for Polled mode DCMD
 336          */
 337         if (cmd->flags & DRV_DCMD_POLLED_MODE)
 338                 return;
 339
 340         spin_lock_irqsave(&instance->mfi_pool_lock, flags);
 341
 342         if (fusion) {
 343                 blk_tags = instance->max_scsi_cmds + cmd->index;
 344                 cmd_fusion = fusion->cmd_list[blk_tags];
 345                 megasas_return_cmd_fusion(instance, cmd_fusion);
 346         }
 347         cmd->scmd = NULL;
 348         cmd->frame_count = 0;
 349         cmd->flags = 0;
 350         memset(cmd->frame, 0, instance->mfi_frame_size);
 351         cmd->frame->io.context = cpu_to_le32(cmd->index);
 352         if (!fusion && reset_devices)
 353                 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
 354         list_add(&cmd->list, (&instance->cmd_pool)->next);
 355
 356         spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
 357
 358 }
 359
 360 static const char *
 361 format_timestamp(uint32_t timestamp)
 362 {
 363         static char buffer[32];
 364
 365         if ((timestamp & 0xff000000) == 0xff000000)
 366                 snprintf(buffer, sizeof(buffer), "boot + %us", timestamp &
 367                 0x00ffffff);
 368         else
 369                 snprintf(buffer, sizeof(buffer), "%us", timestamp);
 370         return buffer;
 371 }
 372
 373 static const char *
 374 format_class(int8_t class)
 375 {
 376         static char buffer[6];
 377
 378         switch (class) {
 379         case MFI_EVT_CLASS_DEBUG:
 380                 return "debug";
 381         case MFI_EVT_CLASS_PROGRESS:
 382                 return "progress";
 383         case MFI_EVT_CLASS_INFO:
 384                 return "info";
 385         case MFI_EVT_CLASS_WARNING:
 386                 return "WARN";
 387         case MFI_EVT_CLASS_CRITICAL:
 388                 return "CRIT";
 389         case MFI_EVT_CLASS_FATAL:
 390                 return "FATAL";
 391         case MFI_EVT_CLASS_DEAD:
 392                 return "DEAD";
 393         default:
 394                 snprintf(buffer, sizeof(buffer), "%d", class);
 395                 return buffer;
 396         }
 397 }
 398
 399 /**
 400   * megasas_decode_evt: Decode FW AEN event and print critical event
 401   * for information.
 402   * @instance:                  Adapter soft state
 403   */
 404 static void
 405 megasas_decode_evt(struct megasas_instance *instance)
 406 {
 407         struct megasas_evt_detail *evt_detail = instance->evt_detail;
 408         union megasas_evt_class_locale class_locale;
 409         class_locale.word = le32_to_cpu(evt_detail->cl.word);
 410
 411         if ((event_log_level < MFI_EVT_CLASS_DEBUG) ||
 412             (event_log_level > MFI_EVT_CLASS_DEAD)) {
 413                 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");
 414                 event_log_level = MFI_EVT_CLASS_CRITICAL;
 415         }
 416
 417         if (class_locale.members.class >= event_log_level)
 418                 dev_info(&instance->pdev->dev, "%d (%s/0x%04x/%s) - %s\n",
 419                         le32_to_cpu(evt_detail->seq_num),
 420                         format_timestamp(le32_to_cpu(evt_detail->time_stamp)),
 421                         (class_locale.members.locale),
 422                         format_class(class_locale.members.class),
 423                         evt_detail->description);
 424 }
 425
 426 /**
 427 *       The following functions are defined for xscale
 428 *       (deviceid : 1064R, PERC5) controllers
 429 */
 430
 431 /**
 432  * megasas_enable_intr_xscale - Enables interrupts
 433  * @regs:                       MFI register set
 434  */
 435 static inline void
 436 megasas_enable_intr_xscale(struct megasas_instance *instance)
 437 {
 438         struct megasas_register_set __iomem *regs;
 439
 440         regs = instance->reg_set;
 441         writel(0, &(regs)->outbound_intr_mask);
 442
 443         /* Dummy readl to force pci flush */
 444         readl(&regs->outbound_intr_mask);
 445 }
 446
 447 /**
 448  * megasas_disable_intr_xscale -Disables interrupt
 449  * @regs:                       MFI register set
 450  */
 451 static inline void
 452 megasas_disable_intr_xscale(struct megasas_instance *instance)
 453 {
 454         struct megasas_register_set __iomem *regs;
 455         u32 mask = 0x1f;
 456
 457         regs = instance->reg_set;
 458         writel(mask, &regs->outbound_intr_mask);
 459         /* Dummy readl to force pci flush */
 460         readl(&regs->outbound_intr_mask);
 461 }
 462
 463 /**
 464  * megasas_read_fw_status_reg_xscale - returns the current FW status value
 465  * @regs:                       MFI register set
 466  */
 467 static u32
 468 megasas_read_fw_status_reg_xscale(struct megasas_instance *instance)
 469 {
 470         return readl(&instance->reg_set->outbound_msg_0);
 471 }
 472 /**
 473  * megasas_clear_interrupt_xscale -     Check & clear interrupt
 474  * @regs:                               MFI register set
 475  */
 476 static int
 477 megasas_clear_intr_xscale(struct megasas_instance *instance)
 478 {
 479         u32 status;
 480         u32 mfiStatus = 0;
 481         struct megasas_register_set __iomem *regs;
 482         regs = instance->reg_set;
 483
 484         /*
 485          * Check if it is our interrupt
 486          */
 487         status = readl(&regs->outbound_intr_status);
 488
 489         if (status & MFI_OB_INTR_STATUS_MASK)
 490                 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
 491         if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT)
 492                 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
 493
 494         /*
 495          * Clear the interrupt by writing back the same value
 496          */
 497         if (mfiStatus)
 498                 writel(status, &regs->outbound_intr_status);
 499
 500         /* Dummy readl to force pci flush */
 501         readl(&regs->outbound_intr_status);
 502
 503         return mfiStatus;
 504 }
 505
 506 /**
 507  * megasas_fire_cmd_xscale -    Sends command to the FW
 508  * @frame_phys_addr :           Physical address of cmd
 509  * @frame_count :               Number of frames for the command
 510  * @regs :                      MFI register set
 511  */
 512 static inline void
 513 megasas_fire_cmd_xscale(struct megasas_instance *instance,
 514                 dma_addr_t frame_phys_addr,
 515                 u32 frame_count,
 516                 struct megasas_register_set __iomem *regs)
 517 {
 518         unsigned long flags;
 519
 520         spin_lock_irqsave(&instance->hba_lock, flags);
 521         writel((frame_phys_addr >> 3)|(frame_count),
 522                &(regs)->inbound_queue_port);
 523         spin_unlock_irqrestore(&instance->hba_lock, flags);
 524 }
 525
 526 /**
 527  * megasas_adp_reset_xscale -  For controller reset
 528  * @regs:                              MFI register set
 529  */
 530 static int
 531 megasas_adp_reset_xscale(struct megasas_instance *instance,
 532         struct megasas_register_set __iomem *regs)
 533 {
 534         u32 i;
 535         u32 pcidata;
 536
 537         writel(MFI_ADP_RESET, &regs->inbound_doorbell);
 538
 539         for (i = 0; i < 3; i++)
 540                 msleep(1000); /* sleep for 3 secs */
 541         pcidata  = 0;
 542         pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata);
 543         dev_notice(&instance->pdev->dev, "pcidata = %x\n", pcidata);
 544         if (pcidata & 0x2) {
 545                 dev_notice(&instance->pdev->dev, "mfi 1068 offset read=%x\n", pcidata);
 546                 pcidata &= ~0x2;
 547                 pci_write_config_dword(instance->pdev,
 548                                 MFI_1068_PCSR_OFFSET, pcidata);
 549
 550                 for (i = 0; i < 2; i++)
 551                         msleep(1000); /* need to wait 2 secs again */
 552
 553                 pcidata  = 0;
 554                 pci_read_config_dword(instance->pdev,
 555                                 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata);
 556                 dev_notice(&instance->pdev->dev, "1068 offset handshake read=%x\n", pcidata);
 557                 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) {
 558                         dev_notice(&instance->pdev->dev, "1068 offset pcidt=%x\n", pcidata);
 559                         pcidata = 0;
 560                         pci_write_config_dword(instance->pdev,
 561                                 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata);
 562                 }
 563         }
 564         return 0;
 565 }
 566
 567 /**
 568  * megasas_check_reset_xscale - For controller reset check
 569  * @regs:                               MFI register set
 570  */
 571 static int
 572 megasas_check_reset_xscale(struct megasas_instance *instance,
 573                 struct megasas_register_set __iomem *regs)
 574 {
 575         if ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) &&
 576             (le32_to_cpu(*instance->consumer) ==
 577                 MEGASAS_ADPRESET_INPROG_SIGN))
 578                 return 1;
 579         return 0;
 580 }
 581
 582 static struct megasas_instance_template megasas_instance_template_xscale = {
 583
 584         .fire_cmd = megasas_fire_cmd_xscale,
 585         .enable_intr = megasas_enable_intr_xscale,
 586         .disable_intr = megasas_disable_intr_xscale,
 587         .clear_intr = megasas_clear_intr_xscale,
 588         .read_fw_status_reg = megasas_read_fw_status_reg_xscale,
 589         .adp_reset = megasas_adp_reset_xscale,
 590         .check_reset = megasas_check_reset_xscale,
 591         .service_isr = megasas_isr,
 592         .tasklet = megasas_complete_cmd_dpc,
 593         .init_adapter = megasas_init_adapter_mfi,
 594         .build_and_issue_cmd = megasas_build_and_issue_cmd,
 595         .issue_dcmd = megasas_issue_dcmd,
 596 };
 597
 598 /**
 599 *       This is the end of set of functions & definitions specific
 600 *       to xscale (deviceid : 1064R, PERC5) controllers
 601 */
 602
 603 /**
 604 *       The following functions are defined for ppc (deviceid : 0x60)
 605 *       controllers
 606 */
 607
 608 /**
 609  * megasas_enable_intr_ppc -    Enables interrupts
 610  * @regs:                       MFI register set
 611  */
 612 static inline void
 613 megasas_enable_intr_ppc(struct megasas_instance *instance)
 614 {
 615         struct megasas_register_set __iomem *regs;
 616
 617         regs = instance->reg_set;
 618         writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
 619
 620         writel(~0x80000000, &(regs)->outbound_intr_mask);
 621
 622         /* Dummy readl to force pci flush */
 623         readl(&regs->outbound_intr_mask);
 624 }
 625
 626 /**
 627  * megasas_disable_intr_ppc -   Disable interrupt
 628  * @regs:                       MFI register set
 629  */
 630 static inline void
 631 megasas_disable_intr_ppc(struct megasas_instance *instance)
 632 {
 633         struct megasas_register_set __iomem *regs;
 634         u32 mask = 0xFFFFFFFF;
 635
 636         regs = instance->reg_set;
 637         writel(mask, &regs->outbound_intr_mask);
 638         /* Dummy readl to force pci flush */
 639         readl(&regs->outbound_intr_mask);
 640 }
 641
 642 /**
 643  * megasas_read_fw_status_reg_ppc - returns the current FW status value
 644  * @regs:                       MFI register set
 645  */
 646 static u32
 647 megasas_read_fw_status_reg_ppc(struct megasas_instance *instance)
 648 {
 649         return readl(&instance->reg_set->outbound_scratch_pad_0);
 650 }
 651
 652 /**
 653  * megasas_clear_interrupt_ppc -        Check & clear interrupt
 654  * @regs:                               MFI register set
 655  */
 656 static int
 657 megasas_clear_intr_ppc(struct megasas_instance *instance)
 658 {
 659         u32 status, mfiStatus = 0;
 660         struct megasas_register_set __iomem *regs;
 661         regs = instance->reg_set;
 662
 663         /*
 664          * Check if it is our interrupt
 665          */
 666         status = readl(&regs->outbound_intr_status);
 667
 668         if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT)
 669                 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
 670
 671         if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT)
 672                 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
 673
 674         /*
 675          * Clear the interrupt by writing back the same value
 676          */
 677         writel(status, &regs->outbound_doorbell_clear);
 678
 679         /* Dummy readl to force pci flush */
 680         readl(&regs->outbound_doorbell_clear);
 681
 682         return mfiStatus;
 683 }
 684
 685 /**
 686  * megasas_fire_cmd_ppc -       Sends command to the FW
 687  * @frame_phys_addr :           Physical address of cmd
 688  * @frame_count :               Number of frames for the command
 689  * @regs :                      MFI register set
 690  */
 691 static inline void
 692 megasas_fire_cmd_ppc(struct megasas_instance *instance,
 693                 dma_addr_t frame_phys_addr,
 694                 u32 frame_count,
 695                 struct megasas_register_set __iomem *regs)
 696 {
 697         unsigned long flags;
 698
 699         spin_lock_irqsave(&instance->hba_lock, flags);
 700         writel((frame_phys_addr | (frame_count<<1))|1,
 701                         &(regs)->inbound_queue_port);
 702         spin_unlock_irqrestore(&instance->hba_lock, flags);
 703 }
 704
 705 /**
 706  * megasas_check_reset_ppc -    For controller reset check
 707  * @regs:                               MFI register set
 708  */
 709 static int
 710 megasas_check_reset_ppc(struct megasas_instance *instance,
 711                         struct megasas_register_set __iomem *regs)
 712 {
 713         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
 714                 return 1;
 715
 716         return 0;
 717 }
 718
 719 static struct megasas_instance_template megasas_instance_template_ppc = {
 720
 721         .fire_cmd = megasas_fire_cmd_ppc,
 722         .enable_intr = megasas_enable_intr_ppc,
 723         .disable_intr = megasas_disable_intr_ppc,
 724         .clear_intr = megasas_clear_intr_ppc,
 725         .read_fw_status_reg = megasas_read_fw_status_reg_ppc,
 726         .adp_reset = megasas_adp_reset_xscale,
 727         .check_reset = megasas_check_reset_ppc,
 728         .service_isr = megasas_isr,
 729         .tasklet = megasas_complete_cmd_dpc,
 730         .init_adapter = megasas_init_adapter_mfi,
 731         .build_and_issue_cmd = megasas_build_and_issue_cmd,
 732         .issue_dcmd = megasas_issue_dcmd,
 733 };
 734
 735 /**
 736  * megasas_enable_intr_skinny - Enables interrupts
 737  * @regs:                       MFI register set
 738  */
 739 static inline void
 740 megasas_enable_intr_skinny(struct megasas_instance *instance)
 741 {
 742         struct megasas_register_set __iomem *regs;
 743
 744         regs = instance->reg_set;
 745         writel(0xFFFFFFFF, &(regs)->outbound_intr_mask);
 746
 747         writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
 748
 749         /* Dummy readl to force pci flush */
 750         readl(&regs->outbound_intr_mask);
 751 }
 752
 753 /**
 754  * megasas_disable_intr_skinny -        Disables interrupt
 755  * @regs:                       MFI register set
 756  */
 757 static inline void
 758 megasas_disable_intr_skinny(struct megasas_instance *instance)
 759 {
 760         struct megasas_register_set __iomem *regs;
 761         u32 mask = 0xFFFFFFFF;
 762
 763         regs = instance->reg_set;
 764         writel(mask, &regs->outbound_intr_mask);
 765         /* Dummy readl to force pci flush */
 766         readl(&regs->outbound_intr_mask);
 767 }
 768
 769 /**
 770  * megasas_read_fw_status_reg_skinny - returns the current FW status value
 771  * @regs:                       MFI register set
 772  */
 773 static u32
 774 megasas_read_fw_status_reg_skinny(struct megasas_instance *instance)
 775 {
 776         return readl(&instance->reg_set->outbound_scratch_pad_0);
 777 }
 778
 779 /**
 780  * megasas_clear_interrupt_skinny -     Check & clear interrupt
 781  * @regs:                               MFI register set
 782  */
 783 static int
 784 megasas_clear_intr_skinny(struct megasas_instance *instance)
 785 {
 786         u32 status;
 787         u32 mfiStatus = 0;
 788         struct megasas_register_set __iomem *regs;
 789         regs = instance->reg_set;
 790
 791         /*
 792          * Check if it is our interrupt
 793          */
 794         status = readl(&regs->outbound_intr_status);
 795
 796         if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) {
 797                 return 0;
 798         }
 799
 800         /*
 801          * Check if it is our interrupt
 802          */
 803         if ((megasas_read_fw_status_reg_skinny(instance) & MFI_STATE_MASK) ==
 804             MFI_STATE_FAULT) {
 805                 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
 806         } else
 807                 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
 808
 809         /*
 810          * Clear the interrupt by writing back the same value
 811          */
 812         writel(status, &regs->outbound_intr_status);
 813
 814         /*
 815          * dummy read to flush PCI
 816          */
 817         readl(&regs->outbound_intr_status);
 818
 819         return mfiStatus;
 820 }
 821
 822 /**
 823  * megasas_fire_cmd_skinny -    Sends command to the FW
 824  * @frame_phys_addr :           Physical address of cmd
 825  * @frame_count :               Number of frames for the command
 826  * @regs :                      MFI register set
 827  */
 828 static inline void
 829 megasas_fire_cmd_skinny(struct megasas_instance *instance,
 830                         dma_addr_t frame_phys_addr,
 831                         u32 frame_count,
 832                         struct megasas_register_set __iomem *regs)
 833 {
 834         unsigned long flags;
 835
 836         spin_lock_irqsave(&instance->hba_lock, flags);
 837         writel(upper_32_bits(frame_phys_addr),
 838                &(regs)->inbound_high_queue_port);
 839         writel((lower_32_bits(frame_phys_addr) | (frame_count<<1))|1,
 840                &(regs)->inbound_low_queue_port);
 841         spin_unlock_irqrestore(&instance->hba_lock, flags);
 842 }
 843
 844 /**
 845  * megasas_check_reset_skinny - For controller reset check
 846  * @regs:                               MFI register set
 847  */
 848 static int
 849 megasas_check_reset_skinny(struct megasas_instance *instance,
 850                                 struct megasas_register_set __iomem *regs)
 851 {
 852         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
 853                 return 1;
 854
 855         return 0;
 856 }
 857
 858 static struct megasas_instance_template megasas_instance_template_skinny = {
 859
 860         .fire_cmd = megasas_fire_cmd_skinny,
 861         .enable_intr = megasas_enable_intr_skinny,
 862         .disable_intr = megasas_disable_intr_skinny,
 863         .clear_intr = megasas_clear_intr_skinny,
 864         .read_fw_status_reg = megasas_read_fw_status_reg_skinny,
 865         .adp_reset = megasas_adp_reset_gen2,
 866         .check_reset = megasas_check_reset_skinny,
 867         .service_isr = megasas_isr,
 868         .tasklet = megasas_complete_cmd_dpc,
 869         .init_adapter = megasas_init_adapter_mfi,
 870         .build_and_issue_cmd = megasas_build_and_issue_cmd,
 871         .issue_dcmd = megasas_issue_dcmd,
 872 };
 873
 874
 875 /**
 876 *       The following functions are defined for gen2 (deviceid : 0x78 0x79)
 877 *       controllers
 878 */
 879
 880 /**
 881  * megasas_enable_intr_gen2 -  Enables interrupts
 882  * @regs:                      MFI register set
 883  */
 884 static inline void
 885 megasas_enable_intr_gen2(struct megasas_instance *instance)
 886 {
 887         struct megasas_register_set __iomem *regs;
 888
 889         regs = instance->reg_set;
 890         writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
 891
 892         /* write ~0x00000005 (4 & 1) to the intr mask*/
 893         writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
 894
 895         /* Dummy readl to force pci flush */
 896         readl(&regs->outbound_intr_mask);
 897 }
 898
 899 /**
 900  * megasas_disable_intr_gen2 - Disables interrupt
 901  * @regs:                      MFI register set
 902  */
 903 static inline void
 904 megasas_disable_intr_gen2(struct megasas_instance *instance)
 905 {
 906         struct megasas_register_set __iomem *regs;
 907         u32 mask = 0xFFFFFFFF;
 908
 909         regs = instance->reg_set;
 910         writel(mask, &regs->outbound_intr_mask);
 911         /* Dummy readl to force pci flush */
 912         readl(&regs->outbound_intr_mask);
 913 }
 914
 915 /**
 916  * megasas_read_fw_status_reg_gen2 - returns the current FW status value
 917  * @regs:                      MFI register set
 918  */
 919 static u32
 920 megasas_read_fw_status_reg_gen2(struct megasas_instance *instance)
 921 {
 922         return readl(&instance->reg_set->outbound_scratch_pad_0);
 923 }
 924
 925 /**
 926  * megasas_clear_interrupt_gen2 -      Check & clear interrupt
 927  * @regs:                              MFI register set
 928  */
 929 static int
 930 megasas_clear_intr_gen2(struct megasas_instance *instance)
 931 {
 932         u32 status;
 933         u32 mfiStatus = 0;
 934         struct megasas_register_set __iomem *regs;
 935         regs = instance->reg_set;
 936
 937         /*
 938          * Check if it is our interrupt
 939          */
 940         status = readl(&regs->outbound_intr_status);
 941
 942         if (status & MFI_INTR_FLAG_REPLY_MESSAGE) {
 943                 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
 944         }
 945         if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) {
 946                 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
 947         }
 948
 949         /*
 950          * Clear the interrupt by writing back the same value
 951          */
 952         if (mfiStatus)
 953                 writel(status, &regs->outbound_doorbell_clear);
 954
 955         /* Dummy readl to force pci flush */
 956         readl(&regs->outbound_intr_status);
 957
 958         return mfiStatus;
 959 }
 960 /**
 961  * megasas_fire_cmd_gen2 -     Sends command to the FW
 962  * @frame_phys_addr :          Physical address of cmd
 963  * @frame_count :              Number of frames for the command
 964  * @regs :                     MFI register set
 965  */
 966 static inline void
 967 megasas_fire_cmd_gen2(struct megasas_instance *instance,
 968                         dma_addr_t frame_phys_addr,
 969                         u32 frame_count,
 970                         struct megasas_register_set __iomem *regs)
 971 {
 972         unsigned long flags;
 973
 974         spin_lock_irqsave(&instance->hba_lock, flags);
 975         writel((frame_phys_addr | (frame_count<<1))|1,
 976                         &(regs)->inbound_queue_port);
 977         spin_unlock_irqrestore(&instance->hba_lock, flags);
 978 }
 979
 980 /**
 981  * megasas_adp_reset_gen2 -     For controller reset
 982  * @regs:                               MFI register set
 983  */
 984 static int
 985 megasas_adp_reset_gen2(struct megasas_instance *instance,
 986                         struct megasas_register_set __iomem *reg_set)
 987 {
 988         u32 retry = 0 ;
 989         u32 HostDiag;
 990         u32 __iomem *seq_offset = &reg_set->seq_offset;
 991         u32 __iomem *hostdiag_offset = &reg_set->host_diag;
 992
 993         if (instance->instancet == &megasas_instance_template_skinny) {
 994                 seq_offset = &reg_set->fusion_seq_offset;
 995                 hostdiag_offset = &reg_set->fusion_host_diag;
 996         }
 997
 998         writel(0, seq_offset);
 999         writel(4, seq_offset);
1000         writel(0xb, seq_offset);
1001         writel(2, seq_offset);
1002         writel(7, seq_offset);
1003         writel(0xd, seq_offset);
1004
1005         msleep(1000);
1006
1007         HostDiag = (u32)readl(hostdiag_offset);
1008
1009         while (!(HostDiag & DIAG_WRITE_ENABLE)) {
1010                 msleep(100);
1011                 HostDiag = (u32)readl(hostdiag_offset);
1012                 dev_notice(&instance->pdev->dev, "RESETGEN2: retry=%x, hostdiag=%x\n",
1013                                         retry, HostDiag);
1014
1015                 if (retry++ >= 100)
1016                         return 1;
1017
1018         }
1019
1020         dev_notice(&instance->pdev->dev, "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag);
1021
1022         writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset);
1023
1024         ssleep(10);
1025
1026         HostDiag = (u32)readl(hostdiag_offset);
1027         while (HostDiag & DIAG_RESET_ADAPTER) {
1028                 msleep(100);
1029                 HostDiag = (u32)readl(hostdiag_offset);
1030                 dev_notice(&instance->pdev->dev, "RESET_GEN2: retry=%x, hostdiag=%x\n",
1031                                 retry, HostDiag);
1032
1033                 if (retry++ >= 1000)
1034                         return 1;
1035
1036         }
1037         return 0;
1038 }
1039
1040 /**
1041  * megasas_check_reset_gen2 -   For controller reset check
1042  * @regs:                               MFI register set
1043  */
1044 static int
1045 megasas_check_reset_gen2(struct megasas_instance *instance,
1046                 struct megasas_register_set __iomem *regs)
1047 {
1048         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
1049                 return 1;
1050
1051         return 0;
1052 }
1053
1054 static struct megasas_instance_template megasas_instance_template_gen2 = {
1055
1056         .fire_cmd = megasas_fire_cmd_gen2,
1057         .enable_intr = megasas_enable_intr_gen2,
1058         .disable_intr = megasas_disable_intr_gen2,
1059         .clear_intr = megasas_clear_intr_gen2,
1060         .read_fw_status_reg = megasas_read_fw_status_reg_gen2,
1061         .adp_reset = megasas_adp_reset_gen2,
1062         .check_reset = megasas_check_reset_gen2,
1063         .service_isr = megasas_isr,
1064         .tasklet = megasas_complete_cmd_dpc,
1065         .init_adapter = megasas_init_adapter_mfi,
1066         .build_and_issue_cmd = megasas_build_and_issue_cmd,
1067         .issue_dcmd = megasas_issue_dcmd,
1068 };
1069
1070 /**
1071 *       This is the end of set of functions & definitions
1072 *       specific to gen2 (deviceid : 0x78, 0x79) controllers
1073 */
1074
1075 /*
1076  * Template added for TB (Fusion)
1077  */
1078 extern struct megasas_instance_template megasas_instance_template_fusion;
1079
1080 /**
1081  * megasas_issue_polled -       Issues a polling command
1082  * @instance:                   Adapter soft state
1083  * @cmd:                        Command packet to be issued
1084  *
1085  * For polling, MFI requires the cmd_status to be set to MFI_STAT_INVALID_STATUS before posting.
1086  */
1087 int
1088 megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
1089 {
1090         struct megasas_header *frame_hdr = &cmd->frame->hdr;
1091
1092         frame_hdr->cmd_status = MFI_STAT_INVALID_STATUS;
1093         frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
1094
1095         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1096                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1097                         __func__, __LINE__);
1098                 return DCMD_NOT_FIRED;
1099         }
1100
1101         instance->instancet->issue_dcmd(instance, cmd);
1102
1103         return wait_and_poll(instance, cmd, instance->requestorId ?
1104                         MEGASAS_ROUTINE_WAIT_TIME_VF : MFI_IO_TIMEOUT_SECS);
1105 }
1106
1107 /**
1108  * megasas_issue_blocked_cmd -  Synchronous wrapper around regular FW cmds
1109  * @instance:                   Adapter soft state
1110  * @cmd:                        Command to be issued
1111  * @timeout:                    Timeout in seconds
1112  *
1113  * This function waits on an event for the command to be returned from ISR.
1114  * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1115  * Used to issue ioctl commands.
1116  */
1117 int
1118 megasas_issue_blocked_cmd(struct megasas_instance *instance,
1119                           struct megasas_cmd *cmd, int timeout)
1120 {
1121         int ret = 0;
1122         cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
1123
1124         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1125                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1126                         __func__, __LINE__);
1127                 return DCMD_NOT_FIRED;
1128         }
1129
1130         instance->instancet->issue_dcmd(instance, cmd);
1131
1132         if (timeout) {
1133                 ret = wait_event_timeout(instance->int_cmd_wait_q,
1134                                 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS, timeout * HZ);
1135                 if (!ret) {
1136                         dev_err(&instance->pdev->dev,
1137                                 "DCMD(opcode: 0x%x) is timed out, func:%s\n",
1138                                 cmd->frame->dcmd.opcode, __func__);
1139                         return DCMD_TIMEOUT;
1140                 }
1141         } else
1142                 wait_event(instance->int_cmd_wait_q,
1143                                 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS);
1144
1145         return (cmd->cmd_status_drv == MFI_STAT_OK) ?
1146                 DCMD_SUCCESS : DCMD_FAILED;
1147 }
1148
1149 /**
1150  * megasas_issue_blocked_abort_cmd -    Aborts previously issued cmd
1151  * @instance:                           Adapter soft state
1152  * @cmd_to_abort:                       Previously issued cmd to be aborted
1153  * @timeout:                            Timeout in seconds
1154  *
1155  * MFI firmware can abort previously issued AEN comamnd (automatic event
1156  * notification). The megasas_issue_blocked_abort_cmd() issues such abort
1157  * cmd and waits for return status.
1158  * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1159  */
1160 static int
1161 megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
1162                                 struct megasas_cmd *cmd_to_abort, int timeout)
1163 {
1164         struct megasas_cmd *cmd;
1165         struct megasas_abort_frame *abort_fr;
1166         int ret = 0;
1167         u32 opcode;
1168
1169         cmd = megasas_get_cmd(instance);
1170
1171         if (!cmd)
1172                 return -1;
1173
1174         abort_fr = &cmd->frame->abort;
1175
1176         /*
1177          * Prepare and issue the abort frame
1178          */
1179         abort_fr->cmd = MFI_CMD_ABORT;
1180         abort_fr->cmd_status = MFI_STAT_INVALID_STATUS;
1181         abort_fr->flags = cpu_to_le16(0);
1182         abort_fr->abort_context = cpu_to_le32(cmd_to_abort->index);
1183         abort_fr->abort_mfi_phys_addr_lo =
1184                 cpu_to_le32(lower_32_bits(cmd_to_abort->frame_phys_addr));
1185         abort_fr->abort_mfi_phys_addr_hi =
1186                 cpu_to_le32(upper_32_bits(cmd_to_abort->frame_phys_addr));
1187
1188         cmd->sync_cmd = 1;
1189         cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
1190
1191         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1192                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1193                         __func__, __LINE__);
1194                 return DCMD_NOT_FIRED;
1195         }
1196
1197         instance->instancet->issue_dcmd(instance, cmd);
1198
1199         if (timeout) {
1200                 ret = wait_event_timeout(instance->abort_cmd_wait_q,
1201                                 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS, timeout * HZ);
1202                 if (!ret) {
1203                         opcode = cmd_to_abort->frame->dcmd.opcode;
1204                         dev_err(&instance->pdev->dev,
1205                                 "Abort(to be aborted DCMD opcode: 0x%x) is timed out func:%s\n",
1206                                 opcode,  __func__);
1207                         return DCMD_TIMEOUT;
1208                 }
1209         } else
1210                 wait_event(instance->abort_cmd_wait_q,
1211                                 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS);
1212
1213         cmd->sync_cmd = 0;
1214
1215         megasas_return_cmd(instance, cmd);
1216         return (cmd->cmd_status_drv == MFI_STAT_OK) ?
1217                 DCMD_SUCCESS : DCMD_FAILED;
1218 }
1219
1220 /**
1221  * megasas_make_sgl32 - Prepares 32-bit SGL
1222  * @instance:           Adapter soft state
1223  * @scp:                SCSI command from the mid-layer
1224  * @mfi_sgl:            SGL to be filled in
1225  *
1226  * If successful, this function returns the number of SG elements. Otherwise,
1227  * it returnes -1.
1228  */
1229 static int
1230 megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp,
1231                    union megasas_sgl *mfi_sgl)
1232 {
1233         int i;
1234         int sge_count;
1235         struct scatterlist *os_sgl;
1236
1237         sge_count = scsi_dma_map(scp);
1238         BUG_ON(sge_count < 0);
1239
1240         if (sge_count) {
1241                 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1242                         mfi_sgl->sge32[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1243                         mfi_sgl->sge32[i].phys_addr = cpu_to_le32(sg_dma_address(os_sgl));
1244                 }
1245         }
1246         return sge_count;
1247 }
1248
1249 /**
1250  * megasas_make_sgl64 - Prepares 64-bit SGL
1251  * @instance:           Adapter soft state
1252  * @scp:                SCSI command from the mid-layer
1253  * @mfi_sgl:            SGL to be filled in
1254  *
1255  * If successful, this function returns the number of SG elements. Otherwise,
1256  * it returnes -1.
1257  */
1258 static int
1259 megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp,
1260                    union megasas_sgl *mfi_sgl)
1261 {
1262         int i;
1263         int sge_count;
1264         struct scatterlist *os_sgl;
1265
1266         sge_count = scsi_dma_map(scp);
1267         BUG_ON(sge_count < 0);
1268
1269         if (sge_count) {
1270                 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1271                         mfi_sgl->sge64[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1272                         mfi_sgl->sge64[i].phys_addr = cpu_to_le64(sg_dma_address(os_sgl));
1273                 }
1274         }
1275         return sge_count;
1276 }
1277
1278 /**
1279  * megasas_make_sgl_skinny - Prepares IEEE SGL
1280  * @instance:           Adapter soft state
1281  * @scp:                SCSI command from the mid-layer
1282  * @mfi_sgl:            SGL to be filled in
1283  *
1284  * If successful, this function returns the number of SG elements. Otherwise,
1285  * it returnes -1.
1286  */
1287 static int
1288 megasas_make_sgl_skinny(struct megasas_instance *instance,
1289                 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)
1290 {
1291         int i;
1292         int sge_count;
1293         struct scatterlist *os_sgl;
1294
1295         sge_count = scsi_dma_map(scp);
1296
1297         if (sge_count) {
1298                 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1299                         mfi_sgl->sge_skinny[i].length =
1300                                 cpu_to_le32(sg_dma_len(os_sgl));
1301                         mfi_sgl->sge_skinny[i].phys_addr =
1302                                 cpu_to_le64(sg_dma_address(os_sgl));
1303                         mfi_sgl->sge_skinny[i].flag = cpu_to_le32(0);
1304                 }
1305         }
1306         return sge_count;
1307 }
1308
1309  /**
1310  * megasas_get_frame_count - Computes the number of frames
1311  * @frame_type          : type of frame- io or pthru frame
1312  * @sge_count           : number of sg elements
1313  *
1314  * Returns the number of frames required for numnber of sge's (sge_count)
1315  */
1316
1317 static u32 megasas_get_frame_count(struct megasas_instance *instance,
1318                         u8 sge_count, u8 frame_type)
1319 {
1320         int num_cnt;
1321         int sge_bytes;
1322         u32 sge_sz;
1323         u32 frame_count = 0;
1324
1325         sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
1326             sizeof(struct megasas_sge32);
1327
1328         if (instance->flag_ieee) {
1329                 sge_sz = sizeof(struct megasas_sge_skinny);
1330         }
1331
1332         /*
1333          * Main frame can contain 2 SGEs for 64-bit SGLs and
1334          * 3 SGEs for 32-bit SGLs for ldio &
1335          * 1 SGEs for 64-bit SGLs and
1336          * 2 SGEs for 32-bit SGLs for pthru frame
1337          */
1338         if (unlikely(frame_type == PTHRU_FRAME)) {
1339                 if (instance->flag_ieee == 1) {
1340                         num_cnt = sge_count - 1;
1341                 } else if (IS_DMA64)
1342                         num_cnt = sge_count - 1;
1343                 else
1344                         num_cnt = sge_count - 2;
1345         } else {
1346                 if (instance->flag_ieee == 1) {
1347                         num_cnt = sge_count - 1;
1348                 } else if (IS_DMA64)
1349                         num_cnt = sge_count - 2;
1350                 else
1351                         num_cnt = sge_count - 3;
1352         }
1353
1354         if (num_cnt > 0) {
1355                 sge_bytes = sge_sz * num_cnt;
1356
1357                 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
1358                     ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ;
1359         }
1360         /* Main frame */
1361         frame_count += 1;
1362
1363         if (frame_count > 7)
1364                 frame_count = 8;
1365         return frame_count;
1366 }
1367
1368 /**
1369  * megasas_build_dcdb - Prepares a direct cdb (DCDB) command
1370  * @instance:           Adapter soft state
1371  * @scp:                SCSI command
1372  * @cmd:                Command to be prepared in
1373  *
1374  * This function prepares CDB commands. These are typcially pass-through
1375  * commands to the devices.
1376  */
1377 static int
1378 megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
1379                    struct megasas_cmd *cmd)
1380 {
1381         u32 is_logical;
1382         u32 device_id;
1383         u16 flags = 0;
1384         struct megasas_pthru_frame *pthru;
1385
1386         is_logical = MEGASAS_IS_LOGICAL(scp->device);
1387         device_id = MEGASAS_DEV_INDEX(scp);
1388         pthru = (struct megasas_pthru_frame *)cmd->frame;
1389
1390         if (scp->sc_data_direction == DMA_TO_DEVICE)
1391                 flags = MFI_FRAME_DIR_WRITE;
1392         else if (scp->sc_data_direction == DMA_FROM_DEVICE)
1393                 flags = MFI_FRAME_DIR_READ;
1394         else if (scp->sc_data_direction == DMA_NONE)
1395                 flags = MFI_FRAME_DIR_NONE;
1396
1397         if (instance->flag_ieee == 1) {
1398                 flags |= MFI_FRAME_IEEE;
1399         }
1400
1401         /*
1402          * Prepare the DCDB frame
1403          */
1404         pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO;
1405         pthru->cmd_status = 0x0;
1406         pthru->scsi_status = 0x0;
1407         pthru->target_id = device_id;
1408         pthru->lun = scp->device->lun;
1409         pthru->cdb_len = scp->cmd_len;
1410         pthru->timeout = 0;
1411         pthru->pad_0 = 0;
1412         pthru->flags = cpu_to_le16(flags);
1413         pthru->data_xfer_len = cpu_to_le32(scsi_bufflen(scp));
1414
1415         memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
1416
1417         /*
1418          * If the command is for the tape device, set the
1419          * pthru timeout to the os layer timeout value.
1420          */
1421         if (scp->device->type == TYPE_TAPE) {
1422                 if ((scp->request->timeout / HZ) > 0xFFFF)
1423                         pthru->timeout = cpu_to_le16(0xFFFF);
1424                 else
1425                         pthru->timeout = cpu_to_le16(scp->request->timeout / HZ);
1426         }
1427
1428         /*
1429          * Construct SGL
1430          */
1431         if (instance->flag_ieee == 1) {
1432                 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1433                 pthru->sge_count = megasas_make_sgl_skinny(instance, scp,
1434                                                       &pthru->sgl);
1435         } else if (IS_DMA64) {
1436                 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1437                 pthru->sge_count = megasas_make_sgl64(instance, scp,
1438                                                       &pthru->sgl);
1439         } else
1440                 pthru->sge_count = megasas_make_sgl32(instance, scp,
1441                                                       &pthru->sgl);
1442
1443         if (pthru->sge_count > instance->max_num_sge) {
1444                 dev_err(&instance->pdev->dev, "DCDB too many SGE NUM=%x\n",
1445                         pthru->sge_count);
1446                 return 0;
1447         }
1448
1449         /*
1450          * Sense info specific
1451          */
1452         pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
1453         pthru->sense_buf_phys_addr_hi =
1454                 cpu_to_le32(upper_32_bits(cmd->sense_phys_addr));
1455         pthru->sense_buf_phys_addr_lo =
1456                 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
1457
1458         /*
1459          * Compute the total number of frames this command consumes. FW uses
1460          * this number to pull sufficient number of frames from host memory.
1461          */
1462         cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count,
1463                                                         PTHRU_FRAME);
1464
1465         return cmd->frame_count;
1466 }
1467
1468 /**
1469  * megasas_build_ldio - Prepares IOs to logical devices
1470  * @instance:           Adapter soft state
1471  * @scp:                SCSI command
1472  * @cmd:                Command to be prepared
1473  *
1474  * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
1475  */
1476 static int
1477 megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
1478                    struct megasas_cmd *cmd)
1479 {
1480         u32 device_id;
1481         u8 sc = scp->cmnd[0];
1482         u16 flags = 0;
1483         struct megasas_io_frame *ldio;
1484
1485         device_id = MEGASAS_DEV_INDEX(scp);
1486         ldio = (struct megasas_io_frame *)cmd->frame;
1487
1488         if (scp->sc_data_direction == DMA_TO_DEVICE)
1489                 flags = MFI_FRAME_DIR_WRITE;
1490         else if (scp->sc_data_direction == DMA_FROM_DEVICE)
1491                 flags = MFI_FRAME_DIR_READ;
1492
1493         if (instance->flag_ieee == 1) {
1494                 flags |= MFI_FRAME_IEEE;
1495         }
1496
1497         /*
1498          * Prepare the Logical IO frame: 2nd bit is zero for all read cmds
1499          */
1500         ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ;
1501         ldio->cmd_status = 0x0;
1502         ldio->scsi_status = 0x0;
1503         ldio->target_id = device_id;
1504         ldio->timeout = 0;
1505         ldio->reserved_0 = 0;
1506         ldio->pad_0 = 0;
1507         ldio->flags = cpu_to_le16(flags);
1508         ldio->start_lba_hi = 0;
1509         ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;
1510
1511         /*
1512          * 6-byte READ(0x08) or WRITE(0x0A) cdb
1513          */
1514         if (scp->cmd_len == 6) {
1515                 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[4]);
1516                 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[1] << 16) |
1517                                                  ((u32) scp->cmnd[2] << 8) |
1518                                                  (u32) scp->cmnd[3]);
1519
1520                 ldio->start_lba_lo &= cpu_to_le32(0x1FFFFF);
1521         }
1522
1523         /*
1524          * 10-byte READ(0x28) or WRITE(0x2A) cdb
1525          */
1526         else if (scp->cmd_len == 10) {
1527                 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[8] |
1528                                               ((u32) scp->cmnd[7] << 8));
1529                 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1530                                                  ((u32) scp->cmnd[3] << 16) |
1531                                                  ((u32) scp->cmnd[4] << 8) |
1532                                                  (u32) scp->cmnd[5]);
1533         }
1534
1535         /*
1536          * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1537          */
1538         else if (scp->cmd_len == 12) {
1539                 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1540                                               ((u32) scp->cmnd[7] << 16) |
1541                                               ((u32) scp->cmnd[8] << 8) |
1542                                               (u32) scp->cmnd[9]);
1543
1544                 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1545                                                  ((u32) scp->cmnd[3] << 16) |
1546                                                  ((u32) scp->cmnd[4] << 8) |
1547                                                  (u32) scp->cmnd[5]);
1548         }
1549
1550         /*
1551          * 16-byte READ(0x88) or WRITE(0x8A) cdb
1552          */
1553         else if (scp->cmd_len == 16) {
1554                 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[10] << 24) |
1555                                               ((u32) scp->cmnd[11] << 16) |
1556                                               ((u32) scp->cmnd[12] << 8) |
1557                                               (u32) scp->cmnd[13]);
1558
1559                 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1560                                                  ((u32) scp->cmnd[7] << 16) |
1561                                                  ((u32) scp->cmnd[8] << 8) |
1562                                                  (u32) scp->cmnd[9]);
1563
1564                 ldio->start_lba_hi = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1565                                                  ((u32) scp->cmnd[3] << 16) |
1566                                                  ((u32) scp->cmnd[4] << 8) |
1567                                                  (u32) scp->cmnd[5]);
1568
1569         }
1570
1571         /*
1572          * Construct SGL
1573          */
1574         if (instance->flag_ieee) {
1575                 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1576                 ldio->sge_count = megasas_make_sgl_skinny(instance, scp,
1577                                               &ldio->sgl);
1578         } else if (IS_DMA64) {
1579                 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1580                 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl);
1581         } else
1582                 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl);
1583
1584         if (ldio->sge_count > instance->max_num_sge) {
1585                 dev_err(&instance->pdev->dev, "build_ld_io: sge_count = %x\n",
1586                         ldio->sge_count);
1587                 return 0;
1588         }
1589
1590         /*
1591          * Sense info specific
1592          */
1593         ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
1594         ldio->sense_buf_phys_addr_hi = 0;
1595         ldio->sense_buf_phys_addr_lo = cpu_to_le32(cmd->sense_phys_addr);
1596
1597         /*
1598          * Compute the total number of frames this command consumes. FW uses
1599          * this number to pull sufficient number of frames from host memory.
1600          */
1601         cmd->frame_count = megasas_get_frame_count(instance,
1602                         ldio->sge_count, IO_FRAME);
1603
1604         return cmd->frame_count;
1605 }
1606
1607 /**
1608  * megasas_cmd_type -           Checks if the cmd is for logical drive/sysPD
1609  *                              and whether it's RW or non RW
1610  * @scmd:                       SCSI command
1611  *
1612  */
1613 inline int megasas_cmd_type(struct scsi_cmnd *cmd)
1614 {
1615         int ret;
1616
1617         switch (cmd->cmnd[0]) {
1618         case READ_10:
1619         case WRITE_10:
1620         case READ_12:
1621         case WRITE_12:
1622         case READ_6:
1623         case WRITE_6:
1624         case READ_16:
1625         case WRITE_16:
1626                 ret = (MEGASAS_IS_LOGICAL(cmd->device)) ?
1627                         READ_WRITE_LDIO : READ_WRITE_SYSPDIO;
1628                 break;
1629         default:
1630                 ret = (MEGASAS_IS_LOGICAL(cmd->device)) ?
1631                         NON_READ_WRITE_LDIO : NON_READ_WRITE_SYSPDIO;
1632         }
1633         return ret;
1634 }
1635
1636  /**
1637  * megasas_dump_pending_frames -        Dumps the frame address of all pending cmds
1638  *                                      in FW
1639  * @instance:                           Adapter soft state
1640  */
1641 static inline void
1642 megasas_dump_pending_frames(struct megasas_instance *instance)
1643 {
1644         struct megasas_cmd *cmd;
1645         int i,n;
1646         union megasas_sgl *mfi_sgl;
1647         struct megasas_io_frame *ldio;
1648         struct megasas_pthru_frame *pthru;
1649         u32 sgcount;
1650         u16 max_cmd = instance->max_fw_cmds;
1651
1652         dev_err(&instance->pdev->dev, "[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no);
1653         dev_err(&instance->pdev->dev, "[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding));
1654         if (IS_DMA64)
1655                 dev_err(&instance->pdev->dev, "[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no);
1656         else
1657                 dev_err(&instance->pdev->dev, "[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no);
1658
1659         dev_err(&instance->pdev->dev, "[%d]: Pending OS cmds in FW : \n",instance->host->host_no);
1660         for (i = 0; i < max_cmd; i++) {
1661                 cmd = instance->cmd_list[i];
1662                 if (!cmd->scmd)
1663                         continue;
1664                 dev_err(&instance->pdev->dev, "[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr);
1665                 if (megasas_cmd_type(cmd->scmd) == READ_WRITE_LDIO) {
1666                         ldio = (struct megasas_io_frame *)cmd->frame;
1667                         mfi_sgl = &ldio->sgl;
1668                         sgcount = ldio->sge_count;
1669                         dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x,"
1670                         " lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1671                         instance->host->host_no, cmd->frame_count, ldio->cmd, ldio->target_id,
1672                         le32_to_cpu(ldio->start_lba_lo), le32_to_cpu(ldio->start_lba_hi),
1673                         le32_to_cpu(ldio->sense_buf_phys_addr_lo), sgcount);
1674                 } else {
1675                         pthru = (struct megasas_pthru_frame *) cmd->frame;
1676                         mfi_sgl = &pthru->sgl;
1677                         sgcount = pthru->sge_count;
1678                         dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, "
1679                         "lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1680                         instance->host->host_no, cmd->frame_count, pthru->cmd, pthru->target_id,
1681                         pthru->lun, pthru->cdb_len, le32_to_cpu(pthru->data_xfer_len),
1682                         le32_to_cpu(pthru->sense_buf_phys_addr_lo), sgcount);
1683                 }
1684                 if (megasas_dbg_lvl & MEGASAS_DBG_LVL) {
1685                         for (n = 0; n < sgcount; n++) {
1686                                 if (IS_DMA64)
1687                                         dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%llx\n",
1688                                                 le32_to_cpu(mfi_sgl->sge64[n].length),
1689                                                 le64_to_cpu(mfi_sgl->sge64[n].phys_addr));
1690                                 else
1691                                         dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%x\n",
1692                                                 le32_to_cpu(mfi_sgl->sge32[n].length),
1693                                                 le32_to_cpu(mfi_sgl->sge32[n].phys_addr));
1694                         }
1695                 }
1696         } /*for max_cmd*/
1697         dev_err(&instance->pdev->dev, "[%d]: Pending Internal cmds in FW : \n",instance->host->host_no);
1698         for (i = 0; i < max_cmd; i++) {
1699
1700                 cmd = instance->cmd_list[i];
1701
1702                 if (cmd->sync_cmd == 1)
1703                         dev_err(&instance->pdev->dev, "0x%08lx : ", (unsigned long)cmd->frame_phys_addr);
1704         }
1705         dev_err(&instance->pdev->dev, "[%d]: Dumping Done\n\n",instance->host->host_no);
1706 }
1707
1708 u32
1709 megasas_build_and_issue_cmd(struct megasas_instance *instance,
1710                             struct scsi_cmnd *scmd)
1711 {
1712         struct megasas_cmd *cmd;
1713         u32 frame_count;
1714
1715         cmd = megasas_get_cmd(instance);
1716         if (!cmd)
1717                 return SCSI_MLQUEUE_HOST_BUSY;
1718
1719         /*
1720          * Logical drive command
1721          */
1722         if (megasas_cmd_type(scmd) == READ_WRITE_LDIO)
1723                 frame_count = megasas_build_ldio(instance, scmd, cmd);
1724         else
1725                 frame_count = megasas_build_dcdb(instance, scmd, cmd);
1726
1727         if (!frame_count)
1728                 goto out_return_cmd;
1729
1730         cmd->scmd = scmd;
1731         scmd->SCp.ptr = (char *)cmd;
1732
1733         /*
1734          * Issue the command to the FW
1735          */
1736         atomic_inc(&instance->fw_outstanding);
1737
1738         instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
1739                                 cmd->frame_count-1, instance->reg_set);
1740
1741         return 0;
1742 out_return_cmd:
1743         megasas_return_cmd(instance, cmd);
1744         return SCSI_MLQUEUE_HOST_BUSY;
1745 }
1746
1747
1748 /**
1749  * megasas_queue_command -      Queue entry point
1750  * @scmd:                       SCSI command to be queued
1751  * @done:                       Callback entry point
1752  */
1753 static int
1754 megasas_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
1755 {
1756         struct megasas_instance *instance;
1757         struct MR_PRIV_DEVICE *mr_device_priv_data;
1758
1759         instance = (struct megasas_instance *)
1760             scmd->device->host->hostdata;
1761
1762         if (instance->unload == 1) {
1763                 scmd->result = DID_NO_CONNECT << 16;
1764                 scmd->scsi_done(scmd);
1765                 return 0;
1766         }
1767
1768         if (instance->issuepend_done == 0)
1769                 return SCSI_MLQUEUE_HOST_BUSY;
1770
1771
1772         /* Check for an mpio path and adjust behavior */
1773         if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
1774                 if (megasas_check_mpio_paths(instance, scmd) ==
1775                     (DID_REQUEUE << 16)) {
1776                         return SCSI_MLQUEUE_HOST_BUSY;
1777                 } else {
1778                         scmd->result = DID_NO_CONNECT << 16;
1779                         scmd->scsi_done(scmd);
1780                         return 0;
1781                 }
1782         }
1783
1784         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1785                 scmd->result = DID_NO_CONNECT << 16;
1786                 scmd->scsi_done(scmd);
1787                 return 0;
1788         }
1789
1790         mr_device_priv_data = scmd->device->hostdata;
1791         if (!mr_device_priv_data) {
1792                 scmd->result = DID_NO_CONNECT << 16;
1793                 scmd->scsi_done(scmd);
1794                 return 0;
1795         }
1796
1797         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
1798                 return SCSI_MLQUEUE_HOST_BUSY;
1799
1800         if (mr_device_priv_data->tm_busy)
1801                 return SCSI_MLQUEUE_DEVICE_BUSY;
1802
1803
1804         scmd->result = 0;
1805
1806         if (MEGASAS_IS_LOGICAL(scmd->device) &&
1807             (scmd->device->id >= instance->fw_supported_vd_count ||
1808                 scmd->device->lun)) {
1809                 scmd->result = DID_BAD_TARGET << 16;
1810                 goto out_done;
1811         }
1812
1813         if ((scmd->cmnd[0] == SYNCHRONIZE_CACHE) &&
1814             MEGASAS_IS_LOGICAL(scmd->device) &&
1815             (!instance->fw_sync_cache_support)) {
1816                 scmd->result = DID_OK << 16;
1817                 goto out_done;
1818         }
1819
1820         return instance->instancet->build_and_issue_cmd(instance, scmd);
1821
1822  out_done:
1823         scmd->scsi_done(scmd);
1824         return 0;
1825 }
1826
1827 static struct megasas_instance *megasas_lookup_instance(u16 host_no)
1828 {
1829         int i;
1830
1831         for (i = 0; i < megasas_mgmt_info.max_index; i++) {
1832
1833                 if ((megasas_mgmt_info.instance[i]) &&
1834                     (megasas_mgmt_info.instance[i]->host->host_no == host_no))
1835                         return megasas_mgmt_info.instance[i];
1836         }
1837
1838         return NULL;
1839 }
1840
1841 /*
1842 * megasas_set_dynamic_target_properties -
1843 * Device property set by driver may not be static and it is required to be
1844 * updated after OCR
1845 *
1846 * set tm_capable.
1847 * set dma alignment (only for eedp protection enable vd).
1848 *
1849 * @sdev: OS provided scsi device
1850 *
1851 * Returns void
1852 */
1853 void megasas_set_dynamic_target_properties(struct scsi_device *sdev,
1854                                            bool is_target_prop)
1855 {
1856         u16 pd_index = 0, ld;
1857         u32 device_id;
1858         struct megasas_instance *instance;
1859         struct fusion_context *fusion;
1860         struct MR_PRIV_DEVICE *mr_device_priv_data;
1861         struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
1862         struct MR_LD_RAID *raid;
1863         struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
1864
1865         instance = megasas_lookup_instance(sdev->host->host_no);
1866         fusion = instance->ctrl_context;
1867         mr_device_priv_data = sdev->hostdata;
1868
1869         if (!fusion || !mr_device_priv_data)
1870                 return;
1871
1872         if (MEGASAS_IS_LOGICAL(sdev)) {
1873                 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL)
1874                                         + sdev->id;
1875                 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
1876                 ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
1877                 if (ld >= instance->fw_supported_vd_count)
1878                         return;
1879                 raid = MR_LdRaidGet(ld, local_map_ptr);
1880
1881                 if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER)
1882                 blk_queue_update_dma_alignment(sdev->request_queue, 0x7);
1883
1884                 mr_device_priv_data->is_tm_capable =
1885                         raid->capability.tmCapable;
1886         } else if (instance->use_seqnum_jbod_fp) {
1887                 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1888                         sdev->id;
1889                 pd_sync = (void *)fusion->pd_seq_sync
1890                                 [(instance->pd_seq_map_id - 1) & 1];
1891                 mr_device_priv_data->is_tm_capable =
1892                         pd_sync->seq[pd_index].capability.tmCapable;
1893         }
1894
1895         if (is_target_prop && instance->tgt_prop->reset_tmo) {
1896                 /*
1897                  * If FW provides a target reset timeout value, driver will use
1898                  * it. If not set, fallback to default values.
1899                  */
1900                 mr_device_priv_data->target_reset_tmo =
1901                         min_t(u8, instance->max_reset_tmo,
1902                               instance->tgt_prop->reset_tmo);
1903                 mr_device_priv_data->task_abort_tmo = instance->task_abort_tmo;
1904         } else {
1905                 mr_device_priv_data->target_reset_tmo =
1906                                                 MEGASAS_DEFAULT_TM_TIMEOUT;
1907                 mr_device_priv_data->task_abort_tmo =
1908                                                 MEGASAS_DEFAULT_TM_TIMEOUT;
1909         }
1910 }
1911
1912 /*
1913  * megasas_set_nvme_device_properties -
1914  * set nomerges=2
1915  * set virtual page boundary = 4K (current mr_nvme_pg_size is 4K).
1916  * set maximum io transfer = MDTS of NVME device provided by MR firmware.
1917  *
1918  * MR firmware provides value in KB. Caller of this function converts
1919  * kb into bytes.
1920  *
1921  * e.a MDTS=5 means 2^5 * nvme page size. (In case of 4K page size,
1922  * MR firmware provides value 128 as (32 * 4K) = 128K.
1923  *
1924  * @sdev:                               scsi device
1925  * @max_io_size:                                maximum io transfer size
1926  *
1927  */
1928 static inline void
1929 megasas_set_nvme_device_properties(struct scsi_device *sdev, u32 max_io_size)
1930 {
1931         struct megasas_instance *instance;
1932         u32 mr_nvme_pg_size;
1933
1934         instance = (struct megasas_instance *)sdev->host->hostdata;
1935         mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
1936                                 MR_DEFAULT_NVME_PAGE_SIZE);
1937
1938         blk_queue_max_hw_sectors(sdev->request_queue, (max_io_size / 512));
1939
1940         blk_queue_flag_set(QUEUE_FLAG_NOMERGES, sdev->request_queue);
1941         blk_queue_virt_boundary(sdev->request_queue, mr_nvme_pg_size - 1);
1942 }
1943
1944
1945 /*
1946  * megasas_set_static_target_properties -
1947  * Device property set by driver are static and it is not required to be
1948  * updated after OCR.
1949  *
1950  * set io timeout
1951  * set device queue depth
1952  * set nvme device properties. see - megasas_set_nvme_device_properties
1953  *
1954  * @sdev:                               scsi device
1955  * @is_target_prop                      true, if fw provided target properties.
1956  */
1957 static void megasas_set_static_target_properties(struct scsi_device *sdev,
1958                                                  bool is_target_prop)
1959 {
1960         u8 interface_type;
1961         u32 device_qd = MEGASAS_DEFAULT_CMD_PER_LUN;
1962         u32 max_io_size_kb = MR_DEFAULT_NVME_MDTS_KB;
1963         u32 tgt_device_qd;
1964         struct megasas_instance *instance;
1965         struct MR_PRIV_DEVICE *mr_device_priv_data;
1966
1967         instance = megasas_lookup_instance(sdev->host->host_no);
1968         mr_device_priv_data = sdev->hostdata;
1969         interface_type  = mr_device_priv_data->interface_type;
1970
1971         /*
1972          * The RAID firmware may require extended timeouts.
1973          */
1974         blk_queue_rq_timeout(sdev->request_queue, scmd_timeout * HZ);
1975
1976         switch (interface_type) {
1977         case SAS_PD:
1978                 device_qd = MEGASAS_SAS_QD;
1979                 break;
1980         case SATA_PD:
1981                 device_qd = MEGASAS_SATA_QD;
1982                 break;
1983         case NVME_PD:
1984                 device_qd = MEGASAS_NVME_QD;
1985                 break;
1986         }
1987
1988         if (is_target_prop) {
1989                 tgt_device_qd = le32_to_cpu(instance->tgt_prop->device_qdepth);
1990                 if (tgt_device_qd &&
1991                     (tgt_device_qd <= instance->host->can_queue))
1992                         device_qd = tgt_device_qd;
1993
1994                 /* max_io_size_kb will be set to non zero for
1995                  * nvme based vd and syspd.
1996                  */
1997                 max_io_size_kb = le32_to_cpu(instance->tgt_prop->max_io_size_kb);
1998         }
1999
2000         if (instance->nvme_page_size && max_io_size_kb)
2001                 megasas_set_nvme_device_properties(sdev, (max_io_size_kb << 10));
2002
2003         scsi_change_queue_depth(sdev, device_qd);
2004
2005 }
2006
2007
2008 static int megasas_slave_configure(struct scsi_device *sdev)
2009 {
2010         u16 pd_index = 0;
2011         struct megasas_instance *instance;
2012         int ret_target_prop = DCMD_FAILED;
2013         bool is_target_prop = false;
2014
2015         instance = megasas_lookup_instance(sdev->host->host_no);
2016         if (instance->pd_list_not_supported) {
2017                 if (!MEGASAS_IS_LOGICAL(sdev) && sdev->type == TYPE_DISK) {
2018                         pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
2019                                 sdev->id;
2020                         if (instance->pd_list[pd_index].driveState !=
2021                                 MR_PD_STATE_SYSTEM)
2022                                 return -ENXIO;
2023                 }
2024         }
2025
2026         mutex_lock(&instance->reset_mutex);
2027         /* Send DCMD to Firmware and cache the information */
2028         if ((instance->pd_info) && !MEGASAS_IS_LOGICAL(sdev))
2029                 megasas_get_pd_info(instance, sdev);
2030
2031         /* Some ventura firmware may not have instance->nvme_page_size set.
2032          * Do not send MR_DCMD_DRV_GET_TARGET_PROP
2033          */
2034         if ((instance->tgt_prop) && (instance->nvme_page_size))
2035                 ret_target_prop = megasas_get_target_prop(instance, sdev);
2036
2037         is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
2038         megasas_set_static_target_properties(sdev, is_target_prop);
2039
2040         /* This sdev property may change post OCR */
2041         megasas_set_dynamic_target_properties(sdev, is_target_prop);
2042
2043         mutex_unlock(&instance->reset_mutex);
2044
2045         return 0;
2046 }
2047
2048 static int megasas_slave_alloc(struct scsi_device *sdev)
2049 {
2050         u16 pd_index = 0;
2051         struct megasas_instance *instance ;
2052         struct MR_PRIV_DEVICE *mr_device_priv_data;
2053
2054         instance = megasas_lookup_instance(sdev->host->host_no);
2055         if (!MEGASAS_IS_LOGICAL(sdev)) {
2056                 /*
2057                  * Open the OS scan to the SYSTEM PD
2058                  */
2059                 pd_index =
2060                         (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
2061                         sdev->id;
2062                 if ((instance->pd_list_not_supported ||
2063                         instance->pd_list[pd_index].driveState ==
2064                         MR_PD_STATE_SYSTEM)) {
2065                         goto scan_target;
2066                 }
2067                 return -ENXIO;
2068         }
2069
2070 scan_target:
2071         mr_device_priv_data = kzalloc(sizeof(*mr_device_priv_data),
2072                                         GFP_KERNEL);
2073         if (!mr_device_priv_data)
2074                 return -ENOMEM;
2075         sdev->hostdata = mr_device_priv_data;
2076
2077         atomic_set(&mr_device_priv_data->r1_ldio_hint,
2078                    instance->r1_ldio_hint_default);
2079         return 0;
2080 }
2081
2082 static void megasas_slave_destroy(struct scsi_device *sdev)
2083 {
2084         kfree(sdev->hostdata);
2085         sdev->hostdata = NULL;
2086 }
2087
2088 /*
2089 * megasas_complete_outstanding_ioctls - Complete outstanding ioctls after a
2090 *                                       kill adapter
2091 * @instance:                            Adapter soft state
2092 *
2093 */
2094 static void megasas_complete_outstanding_ioctls(struct megasas_instance *instance)
2095 {
2096         int i;
2097         struct megasas_cmd *cmd_mfi;
2098         struct megasas_cmd_fusion *cmd_fusion;
2099         struct fusion_context *fusion = instance->ctrl_context;
2100
2101         /* Find all outstanding ioctls */
2102         if (fusion) {
2103                 for (i = 0; i < instance->max_fw_cmds; i++) {
2104                         cmd_fusion = fusion->cmd_list[i];
2105                         if (cmd_fusion->sync_cmd_idx != (u32)ULONG_MAX) {
2106                                 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
2107                                 if (cmd_mfi->sync_cmd &&
2108                                     (cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT)) {
2109                                         cmd_mfi->frame->hdr.cmd_status =
2110                                                         MFI_STAT_WRONG_STATE;
2111                                         megasas_complete_cmd(instance,
2112                                                              cmd_mfi, DID_OK);
2113                                 }
2114                         }
2115                 }
2116         } else {
2117                 for (i = 0; i < instance->max_fw_cmds; i++) {
2118                         cmd_mfi = instance->cmd_list[i];
2119                         if (cmd_mfi->sync_cmd && cmd_mfi->frame->hdr.cmd !=
2120                                 MFI_CMD_ABORT)
2121                                 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
2122                 }
2123         }
2124 }
2125
2126
2127 void megaraid_sas_kill_hba(struct megasas_instance *instance)
2128 {
2129         /* Set critical error to block I/O & ioctls in case caller didn't */
2130         atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2131         /* Wait 1 second to ensure IO or ioctls in build have posted */
2132         msleep(1000);
2133         if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2134                 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2135                 (instance->adapter_type != MFI_SERIES)) {
2136                 if (!instance->requestorId) {
2137                         writel(MFI_STOP_ADP, &instance->reg_set->doorbell);
2138                         /* Flush */
2139                         readl(&instance->reg_set->doorbell);
2140                 }
2141                 if (instance->requestorId && instance->peerIsPresent)
2142                         memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
2143         } else {
2144                 writel(MFI_STOP_ADP,
2145                         &instance->reg_set->inbound_doorbell);
2146         }
2147         /* Complete outstanding ioctls when adapter is killed */
2148         megasas_complete_outstanding_ioctls(instance);
2149 }
2150
2151  /**
2152   * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
2153   *                                     restored to max value
2154   * @instance:                  Adapter soft state
2155   *
2156   */
2157 void
2158 megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
2159 {
2160         unsigned long flags;
2161
2162         if (instance->flag & MEGASAS_FW_BUSY
2163             && time_after(jiffies, instance->last_time + 5 * HZ)
2164             && atomic_read(&instance->fw_outstanding) <
2165             instance->throttlequeuedepth + 1) {
2166
2167                 spin_lock_irqsave(instance->host->host_lock, flags);
2168                 instance->flag &= ~MEGASAS_FW_BUSY;
2169
2170                 instance->host->can_queue = instance->cur_can_queue;
2171                 spin_unlock_irqrestore(instance->host->host_lock, flags);
2172         }
2173 }
2174
2175 /**
2176  * megasas_complete_cmd_dpc      -      Returns FW's controller structure
2177  * @instance_addr:                      Address of adapter soft state
2178  *
2179  * Tasklet to complete cmds
2180  */
2181 static void megasas_complete_cmd_dpc(unsigned long instance_addr)
2182 {
2183         u32 producer;
2184         u32 consumer;
2185         u32 context;
2186         struct megasas_cmd *cmd;
2187         struct megasas_instance *instance =
2188                                 (struct megasas_instance *)instance_addr;
2189         unsigned long flags;
2190
2191         /* If we have already declared adapter dead, donot complete cmds */
2192         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
2193                 return;
2194
2195         spin_lock_irqsave(&instance->completion_lock, flags);
2196
2197         producer = le32_to_cpu(*instance->producer);
2198         consumer = le32_to_cpu(*instance->consumer);
2199
2200         while (consumer != producer) {
2201                 context = le32_to_cpu(instance->reply_queue[consumer]);
2202                 if (context >= instance->max_fw_cmds) {
2203                         dev_err(&instance->pdev->dev, "Unexpected context value %x\n",
2204                                 context);
2205                         BUG();
2206                 }
2207
2208                 cmd = instance->cmd_list[context];
2209
2210                 megasas_complete_cmd(instance, cmd, DID_OK);
2211
2212                 consumer++;
2213                 if (consumer == (instance->max_fw_cmds + 1)) {
2214                         consumer = 0;
2215                 }
2216         }
2217
2218         *instance->consumer = cpu_to_le32(producer);
2219
2220         spin_unlock_irqrestore(&instance->completion_lock, flags);
2221
2222         /*
2223          * Check if we can restore can_queue
2224          */
2225         megasas_check_and_restore_queue_depth(instance);
2226 }
2227
2228 static void megasas_sriov_heartbeat_handler(struct timer_list *t);
2229
2230 /**
2231  * megasas_start_timer - Initializes sriov heartbeat timer object
2232  * @instance:           Adapter soft state
2233  *
2234  */
2235 void megasas_start_timer(struct megasas_instance *instance)
2236 {
2237         struct timer_list *timer = &instance->sriov_heartbeat_timer;
2238
2239         timer_setup(timer, megasas_sriov_heartbeat_handler, 0);
2240         timer->expires = jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF;
2241         add_timer(timer);
2242 }
2243
2244 static void
2245 megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
2246
2247 static void
2248 process_fw_state_change_wq(struct work_struct *work);
2249
2250 static void megasas_do_ocr(struct megasas_instance *instance)
2251 {
2252         if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
2253         (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
2254         (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
2255                 *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
2256         }
2257         instance->instancet->disable_intr(instance);
2258         atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
2259         instance->issuepend_done = 0;
2260
2261         atomic_set(&instance->fw_outstanding, 0);
2262         megasas_internal_reset_defer_cmds(instance);
2263         process_fw_state_change_wq(&instance->work_init);
2264 }
2265
2266 static int megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance,
2267                                             int initial)
2268 {
2269         struct megasas_cmd *cmd;
2270         struct megasas_dcmd_frame *dcmd;
2271         struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL;
2272         dma_addr_t new_affiliation_111_h;
2273         int ld, retval = 0;
2274         u8 thisVf;
2275
2276         cmd = megasas_get_cmd(instance);
2277
2278         if (!cmd) {
2279                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation_111:"
2280                        "Failed to get cmd for scsi%d\n",
2281                         instance->host->host_no);
2282                 return -ENOMEM;
2283         }
2284
2285         dcmd = &cmd->frame->dcmd;
2286
2287         if (!instance->vf_affiliation_111) {
2288                 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2289                        "affiliation for scsi%d\n", instance->host->host_no);
2290                 megasas_return_cmd(instance, cmd);
2291                 return -ENOMEM;
2292         }
2293
2294         if (initial)
2295                         memset(instance->vf_affiliation_111, 0,
2296                                sizeof(struct MR_LD_VF_AFFILIATION_111));
2297         else {
2298                 new_affiliation_111 =
2299                         dma_alloc_coherent(&instance->pdev->dev,
2300                                            sizeof(struct MR_LD_VF_AFFILIATION_111),
2301                                            &new_affiliation_111_h, GFP_KERNEL);
2302                 if (!new_affiliation_111) {
2303                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2304                                "memory for new affiliation for scsi%d\n",
2305                                instance->host->host_no);
2306                         megasas_return_cmd(instance, cmd);
2307                         return -ENOMEM;
2308                 }
2309         }
2310
2311         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2312
2313         dcmd->cmd = MFI_CMD_DCMD;
2314         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2315         dcmd->sge_count = 1;
2316         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2317         dcmd->timeout = 0;
2318         dcmd->pad_0 = 0;
2319         dcmd->data_xfer_len =
2320                 cpu_to_le32(sizeof(struct MR_LD_VF_AFFILIATION_111));
2321         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111);
2322
2323         if (initial)
2324                 dcmd->sgl.sge32[0].phys_addr =
2325                         cpu_to_le32(instance->vf_affiliation_111_h);
2326         else
2327                 dcmd->sgl.sge32[0].phys_addr =
2328                         cpu_to_le32(new_affiliation_111_h);
2329
2330         dcmd->sgl.sge32[0].length = cpu_to_le32(
2331                 sizeof(struct MR_LD_VF_AFFILIATION_111));
2332
2333         dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2334                "scsi%d\n", instance->host->host_no);
2335
2336         if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2337                 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2338                        " failed with status 0x%x for scsi%d\n",
2339                        dcmd->cmd_status, instance->host->host_no);
2340                 retval = 1; /* Do a scan if we couldn't get affiliation */
2341                 goto out;
2342         }
2343
2344         if (!initial) {
2345                 thisVf = new_affiliation_111->thisVf;
2346                 for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++)
2347                         if (instance->vf_affiliation_111->map[ld].policy[thisVf] !=
2348                             new_affiliation_111->map[ld].policy[thisVf]) {
2349                                 dev_warn(&instance->pdev->dev, "SR-IOV: "
2350                                        "Got new LD/VF affiliation for scsi%d\n",
2351                                        instance->host->host_no);
2352                                 memcpy(instance->vf_affiliation_111,
2353                                        new_affiliation_111,
2354                                        sizeof(struct MR_LD_VF_AFFILIATION_111));
2355                                 retval = 1;
2356                                 goto out;
2357                         }
2358         }
2359 out:
2360         if (new_affiliation_111) {
2361                 dma_free_coherent(&instance->pdev->dev,
2362                                     sizeof(struct MR_LD_VF_AFFILIATION_111),
2363                                     new_affiliation_111,
2364                                     new_affiliation_111_h);
2365         }
2366
2367         megasas_return_cmd(instance, cmd);
2368
2369         return retval;
2370 }
2371
2372 static int megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance,
2373                                             int initial)
2374 {
2375         struct megasas_cmd *cmd;
2376         struct megasas_dcmd_frame *dcmd;
2377         struct MR_LD_VF_AFFILIATION *new_affiliation = NULL;
2378         struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL;
2379         dma_addr_t new_affiliation_h;
2380         int i, j, retval = 0, found = 0, doscan = 0;
2381         u8 thisVf;
2382
2383         cmd = megasas_get_cmd(instance);
2384
2385         if (!cmd) {
2386                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation12: "
2387                        "Failed to get cmd for scsi%d\n",
2388                        instance->host->host_no);
2389                 return -ENOMEM;
2390         }
2391
2392         dcmd = &cmd->frame->dcmd;
2393
2394         if (!instance->vf_affiliation) {
2395                 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2396                        "affiliation for scsi%d\n", instance->host->host_no);
2397                 megasas_return_cmd(instance, cmd);
2398                 return -ENOMEM;
2399         }
2400
2401         if (initial)
2402                 memset(instance->vf_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
2403                        sizeof(struct MR_LD_VF_AFFILIATION));
2404         else {
2405                 new_affiliation =
2406                         dma_alloc_coherent(&instance->pdev->dev,
2407                                            (MAX_LOGICAL_DRIVES + 1) * sizeof(struct MR_LD_VF_AFFILIATION),
2408                                            &new_affiliation_h, GFP_KERNEL);
2409                 if (!new_affiliation) {
2410                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2411                                "memory for new affiliation for scsi%d\n",
2412                                instance->host->host_no);
2413                         megasas_return_cmd(instance, cmd);
2414                         return -ENOMEM;
2415                 }
2416         }
2417
2418         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2419
2420         dcmd->cmd = MFI_CMD_DCMD;
2421         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2422         dcmd->sge_count = 1;
2423         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2424         dcmd->timeout = 0;
2425         dcmd->pad_0 = 0;
2426         dcmd->data_xfer_len = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2427                 sizeof(struct MR_LD_VF_AFFILIATION));
2428         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS);
2429
2430         if (initial)
2431                 dcmd->sgl.sge32[0].phys_addr =
2432                         cpu_to_le32(instance->vf_affiliation_h);
2433         else
2434                 dcmd->sgl.sge32[0].phys_addr =
2435                         cpu_to_le32(new_affiliation_h);
2436
2437         dcmd->sgl.sge32[0].length = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2438                 sizeof(struct MR_LD_VF_AFFILIATION));
2439
2440         dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2441                "scsi%d\n", instance->host->host_no);
2442
2443
2444         if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2445                 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2446                        " failed with status 0x%x for scsi%d\n",
2447                        dcmd->cmd_status, instance->host->host_no);
2448                 retval = 1; /* Do a scan if we couldn't get affiliation */
2449                 goto out;
2450         }
2451
2452         if (!initial) {
2453                 if (!new_affiliation->ldCount) {
2454                         dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2455                                "affiliation for passive path for scsi%d\n",
2456                                instance->host->host_no);
2457                         retval = 1;
2458                         goto out;
2459                 }
2460                 newmap = new_affiliation->map;
2461                 savedmap = instance->vf_affiliation->map;
2462                 thisVf = new_affiliation->thisVf;
2463                 for (i = 0 ; i < new_affiliation->ldCount; i++) {
2464                         found = 0;
2465                         for (j = 0; j < instance->vf_affiliation->ldCount;
2466                              j++) {
2467                                 if (newmap->ref.targetId ==
2468                                     savedmap->ref.targetId) {
2469                                         found = 1;
2470                                         if (newmap->policy[thisVf] !=
2471                                             savedmap->policy[thisVf]) {
2472                                                 doscan = 1;
2473                                                 goto out;
2474                                         }
2475                                 }
2476                                 savedmap = (struct MR_LD_VF_MAP *)
2477                                         ((unsigned char *)savedmap +
2478                                          savedmap->size);
2479                         }
2480                         if (!found && newmap->policy[thisVf] !=
2481                             MR_LD_ACCESS_HIDDEN) {
2482                                 doscan = 1;
2483                                 goto out;
2484                         }
2485                         newmap = (struct MR_LD_VF_MAP *)
2486                                 ((unsigned char *)newmap + newmap->size);
2487                 }
2488
2489                 newmap = new_affiliation->map;
2490                 savedmap = instance->vf_affiliation->map;
2491
2492                 for (i = 0 ; i < instance->vf_affiliation->ldCount; i++) {
2493                         found = 0;
2494                         for (j = 0 ; j < new_affiliation->ldCount; j++) {
2495                                 if (savedmap->ref.targetId ==
2496                                     newmap->ref.targetId) {
2497                                         found = 1;
2498                                         if (savedmap->policy[thisVf] !=
2499                                             newmap->policy[thisVf]) {
2500                                                 doscan = 1;
2501                                                 goto out;
2502                                         }
2503                                 }
2504                                 newmap = (struct MR_LD_VF_MAP *)
2505                                         ((unsigned char *)newmap +
2506                                          newmap->size);
2507                         }
2508                         if (!found && savedmap->policy[thisVf] !=
2509                             MR_LD_ACCESS_HIDDEN) {
2510                                 doscan = 1;
2511                                 goto out;
2512                         }
2513                         savedmap = (struct MR_LD_VF_MAP *)
2514                                 ((unsigned char *)savedmap +
2515                                  savedmap->size);
2516                 }
2517         }
2518 out:
2519         if (doscan) {
2520                 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2521                        "affiliation for scsi%d\n", instance->host->host_no);
2522                 memcpy(instance->vf_affiliation, new_affiliation,
2523                        new_affiliation->size);
2524                 retval = 1;
2525         }
2526
2527         if (new_affiliation)
2528                 dma_free_coherent(&instance->pdev->dev,
2529                                     (MAX_LOGICAL_DRIVES + 1) *
2530                                     sizeof(struct MR_LD_VF_AFFILIATION),
2531                                     new_affiliation, new_affiliation_h);
2532         megasas_return_cmd(instance, cmd);
2533
2534         return retval;
2535 }
2536
2537 /* This function will get the current SR-IOV LD/VF affiliation */
2538 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
2539         int initial)
2540 {
2541         int retval;
2542
2543         if (instance->PlasmaFW111)
2544                 retval = megasas_get_ld_vf_affiliation_111(instance, initial);
2545         else
2546                 retval = megasas_get_ld_vf_affiliation_12(instance, initial);
2547         return retval;
2548 }
2549
2550 /* This function will tell FW to start the SR-IOV heartbeat */
2551 int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
2552                                          int initial)
2553 {
2554         struct megasas_cmd *cmd;
2555         struct megasas_dcmd_frame *dcmd;
2556         int retval = 0;
2557
2558         cmd = megasas_get_cmd(instance);
2559
2560         if (!cmd) {
2561                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_sriov_start_heartbeat: "
2562                        "Failed to get cmd for scsi%d\n",
2563                        instance->host->host_no);
2564                 return -ENOMEM;
2565         }
2566
2567         dcmd = &cmd->frame->dcmd;
2568
2569         if (initial) {
2570                 instance->hb_host_mem =
2571                         dma_alloc_coherent(&instance->pdev->dev,
2572                                            sizeof(struct MR_CTRL_HB_HOST_MEM),
2573                                            &instance->hb_host_mem_h,
2574                                            GFP_KERNEL);
2575                 if (!instance->hb_host_mem) {
2576                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate"
2577                                " memory for heartbeat host memory for scsi%d\n",
2578                                instance->host->host_no);
2579                         retval = -ENOMEM;
2580                         goto out;
2581                 }
2582         }
2583
2584         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2585
2586         dcmd->mbox.s[0] = cpu_to_le16(sizeof(struct MR_CTRL_HB_HOST_MEM));
2587         dcmd->cmd = MFI_CMD_DCMD;
2588         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2589         dcmd->sge_count = 1;
2590         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2591         dcmd->timeout = 0;
2592         dcmd->pad_0 = 0;
2593         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM));
2594         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC);
2595
2596         megasas_set_dma_settings(instance, dcmd, instance->hb_host_mem_h,
2597                                  sizeof(struct MR_CTRL_HB_HOST_MEM));
2598
2599         dev_warn(&instance->pdev->dev, "SR-IOV: Starting heartbeat for scsi%d\n",
2600                instance->host->host_no);
2601
2602         if ((instance->adapter_type != MFI_SERIES) &&
2603             !instance->mask_interrupts)
2604                 retval = megasas_issue_blocked_cmd(instance, cmd,
2605                         MEGASAS_ROUTINE_WAIT_TIME_VF);
2606         else
2607                 retval = megasas_issue_polled(instance, cmd);
2608
2609         if (retval) {
2610                 dev_warn(&instance->pdev->dev, "SR-IOV: MR_DCMD_CTRL_SHARED_HOST"
2611                         "_MEM_ALLOC DCMD %s for scsi%d\n",
2612                         (dcmd->cmd_status == MFI_STAT_INVALID_STATUS) ?
2613                         "timed out" : "failed", instance->host->host_no);
2614                 retval = 1;
2615         }
2616
2617 out:
2618         megasas_return_cmd(instance, cmd);
2619
2620         return retval;
2621 }
2622
2623 /* Handler for SR-IOV heartbeat */
2624 static void megasas_sriov_heartbeat_handler(struct timer_list *t)
2625 {
2626         struct megasas_instance *instance =
2627                 from_timer(instance, t, sriov_heartbeat_timer);
2628
2629         if (instance->hb_host_mem->HB.fwCounter !=
2630             instance->hb_host_mem->HB.driverCounter) {
2631                 instance->hb_host_mem->HB.driverCounter =
2632                         instance->hb_host_mem->HB.fwCounter;
2633                 mod_timer(&instance->sriov_heartbeat_timer,
2634                           jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
2635         } else {
2636                 dev_warn(&instance->pdev->dev, "SR-IOV: Heartbeat never "
2637                        "completed for scsi%d\n", instance->host->host_no);
2638                 schedule_work(&instance->work_init);
2639         }
2640 }
2641
2642 /**
2643  * megasas_wait_for_outstanding -       Wait for all outstanding cmds
2644  * @instance:                           Adapter soft state
2645  *
2646  * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to
2647  * complete all its outstanding commands. Returns error if one or more IOs
2648  * are pending after this time period. It also marks the controller dead.
2649  */
2650 static int megasas_wait_for_outstanding(struct megasas_instance *instance)
2651 {
2652         int i, sl, outstanding;
2653         u32 reset_index;
2654         u32 wait_time = MEGASAS_RESET_WAIT_TIME;
2655         unsigned long flags;
2656         struct list_head clist_local;
2657         struct megasas_cmd *reset_cmd;
2658         u32 fw_state;
2659
2660         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2661                 dev_info(&instance->pdev->dev, "%s:%d HBA is killed.\n",
2662                 __func__, __LINE__);
2663                 return FAILED;
2664         }
2665
2666         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2667
2668                 INIT_LIST_HEAD(&clist_local);
2669                 spin_lock_irqsave(&instance->hba_lock, flags);
2670                 list_splice_init(&instance->internal_reset_pending_q,
2671                                 &clist_local);
2672                 spin_unlock_irqrestore(&instance->hba_lock, flags);
2673
2674                 dev_notice(&instance->pdev->dev, "HBA reset wait ...\n");
2675                 for (i = 0; i < wait_time; i++) {
2676                         msleep(1000);
2677                         if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL)
2678                                 break;
2679                 }
2680
2681                 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2682                         dev_notice(&instance->pdev->dev, "reset: Stopping HBA.\n");
2683                         atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2684                         return FAILED;
2685                 }
2686
2687                 reset_index = 0;
2688                 while (!list_empty(&clist_local)) {
2689                         reset_cmd = list_entry((&clist_local)->next,
2690                                                 struct megasas_cmd, list);
2691                         list_del_init(&reset_cmd->list);
2692                         if (reset_cmd->scmd) {
2693                                 reset_cmd->scmd->result = DID_REQUEUE << 16;
2694                                 dev_notice(&instance->pdev->dev, "%d:%p reset [%02x]\n",
2695                                         reset_index, reset_cmd,
2696                                         reset_cmd->scmd->cmnd[0]);
2697
2698                                 reset_cmd->scmd->scsi_done(reset_cmd->scmd);
2699                                 megasas_return_cmd(instance, reset_cmd);
2700                         } else if (reset_cmd->sync_cmd) {
2701                                 dev_notice(&instance->pdev->dev, "%p synch cmds"
2702                                                 "reset queue\n",
2703                                                 reset_cmd);
2704
2705                                 reset_cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
2706                                 instance->instancet->fire_cmd(instance,
2707                                                 reset_cmd->frame_phys_addr,
2708                                                 0, instance->reg_set);
2709                         } else {
2710                                 dev_notice(&instance->pdev->dev, "%p unexpected"
2711                                         "cmds lst\n",
2712                                         reset_cmd);
2713                         }
2714                         reset_index++;
2715                 }
2716
2717                 return SUCCESS;
2718         }
2719
2720         for (i = 0; i < resetwaittime; i++) {
2721                 outstanding = atomic_read(&instance->fw_outstanding);
2722
2723                 if (!outstanding)
2724                         break;
2725
2726                 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2727                         dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
2728                                "commands to complete\n",i,outstanding);
2729                         /*
2730                          * Call cmd completion routine. Cmd to be
2731                          * be completed directly without depending on isr.
2732                          */
2733                         megasas_complete_cmd_dpc((unsigned long)instance);
2734                 }
2735
2736                 msleep(1000);
2737         }
2738
2739         i = 0;
2740         outstanding = atomic_read(&instance->fw_outstanding);
2741         fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK;
2742
2743         if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2744                 goto no_outstanding;
2745
2746         if (instance->disableOnlineCtrlReset)
2747                 goto kill_hba_and_failed;
2748         do {
2749                 if ((fw_state == MFI_STATE_FAULT) || atomic_read(&instance->fw_outstanding)) {
2750                         dev_info(&instance->pdev->dev,
2751                                 "%s:%d waiting_for_outstanding: before issue OCR. FW state = 0x%x, outstanding 0x%x\n",
2752                                 __func__, __LINE__, fw_state, atomic_read(&instance->fw_outstanding));
2753                         if (i == 3)
2754                                 goto kill_hba_and_failed;
2755                         megasas_do_ocr(instance);
2756
2757                         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2758                                 dev_info(&instance->pdev->dev, "%s:%d OCR failed and HBA is killed.\n",
2759                                 __func__, __LINE__);
2760                                 return FAILED;
2761                         }
2762                         dev_info(&instance->pdev->dev, "%s:%d waiting_for_outstanding: after issue OCR.\n",
2763                                 __func__, __LINE__);
2764
2765                         for (sl = 0; sl < 10; sl++)
2766                                 msleep(500);
2767
2768                         outstanding = atomic_read(&instance->fw_outstanding);
2769
2770                         fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK;
2771                         if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2772                                 goto no_outstanding;
2773                 }
2774                 i++;
2775         } while (i <= 3);
2776
2777 no_outstanding:
2778
2779         dev_info(&instance->pdev->dev, "%s:%d no more pending commands remain after reset handling.\n",
2780                 __func__, __LINE__);
2781         return SUCCESS;
2782
2783 kill_hba_and_failed:
2784
2785         /* Reset not supported, kill adapter */
2786         dev_info(&instance->pdev->dev, "%s:%d killing adapter scsi%d"
2787                 " disableOnlineCtrlReset %d fw_outstanding %d \n",
2788                 __func__, __LINE__, instance->host->host_no, instance->disableOnlineCtrlReset,
2789                 atomic_read(&instance->fw_outstanding));
2790         megasas_dump_pending_frames(instance);
2791         megaraid_sas_kill_hba(instance);
2792
2793         return FAILED;
2794 }
2795
2796 /**
2797  * megasas_generic_reset -      Generic reset routine
2798  * @scmd:                       Mid-layer SCSI command
2799  *
2800  * This routine implements a generic reset handler for device, bus and host
2801  * reset requests. Device, bus and host specific reset handlers can use this
2802  * function after they do their specific tasks.
2803  */
2804 static int megasas_generic_reset(struct scsi_cmnd *scmd)
2805 {
2806         int ret_val;
2807         struct megasas_instance *instance;
2808
2809         instance = (struct megasas_instance *)scmd->device->host->hostdata;
2810
2811         scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n",
2812                  scmd->cmnd[0], scmd->retries);
2813
2814         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2815                 dev_err(&instance->pdev->dev, "cannot recover from previous reset failures\n");
2816                 return FAILED;
2817         }
2818
2819         ret_val = megasas_wait_for_outstanding(instance);
2820         if (ret_val == SUCCESS)
2821                 dev_notice(&instance->pdev->dev, "reset successful\n");
2822         else
2823                 dev_err(&instance->pdev->dev, "failed to do reset\n");
2824
2825         return ret_val;
2826 }
2827
2828 /**
2829  * megasas_reset_timer - quiesce the adapter if required
2830  * @scmd:               scsi cmnd
2831  *
2832  * Sets the FW busy flag and reduces the host->can_queue if the
2833  * cmd has not been completed within the timeout period.
2834  */
2835 static enum
2836 blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
2837 {
2838         struct megasas_instance *instance;
2839         unsigned long flags;
2840
2841         if (time_after(jiffies, scmd->jiffies_at_alloc +
2842                                 (scmd_timeout * 2) * HZ)) {
2843                 return BLK_EH_DONE;
2844         }
2845
2846         instance = (struct megasas_instance *)scmd->device->host->hostdata;
2847         if (!(instance->flag & MEGASAS_FW_BUSY)) {
2848                 /* FW is busy, throttle IO */
2849                 spin_lock_irqsave(instance->host->host_lock, flags);
2850
2851                 instance->host->can_queue = instance->throttlequeuedepth;
2852                 instance->last_time = jiffies;
2853                 instance->flag |= MEGASAS_FW_BUSY;
2854
2855                 spin_unlock_irqrestore(instance->host->host_lock, flags);
2856         }
2857         return BLK_EH_RESET_TIMER;
2858 }
2859
2860 /**
2861  * megasas_dump -       This function will print hexdump of provided buffer.
2862  * @buf:                Buffer to be dumped
2863  * @sz:         Size in bytes
2864  * @format:             Different formats of dumping e.g. format=n will
2865  *                      cause only 'n' 32 bit words to be dumped in a single
2866  *                      line.
2867  */
2868 inline void
2869 megasas_dump(void *buf, int sz, int format)
2870 {
2871         int i;
2872         __le32 *buf_loc = (__le32 *)buf;
2873
2874         for (i = 0; i < (sz / sizeof(__le32)); i++) {
2875                 if ((i % format) == 0) {
2876                         if (i != 0)
2877                                 printk(KERN_CONT "\n");
2878                         printk(KERN_CONT "%08x: ", (i * 4));
2879                 }
2880                 printk(KERN_CONT "%08x ", le32_to_cpu(buf_loc[i]));
2881         }
2882         printk(KERN_CONT "\n");
2883 }
2884
2885 /**
2886  * megasas_dump_reg_set -       This function will print hexdump of register set
2887  * @buf:                        Buffer to be dumped
2888  * @sz:                         Size in bytes
2889  * @format:                     Different formats of dumping e.g. format=n will
2890  *                              cause only 'n' 32 bit words to be dumped in a
2891  *                              single line.
2892  */
2893 inline void
2894 megasas_dump_reg_set(void __iomem *reg_set)
2895 {
2896         unsigned int i, sz = 256;
2897         u32 __iomem *reg = (u32 __iomem *)reg_set;
2898
2899         for (i = 0; i < (sz / sizeof(u32)); i++)
2900                 printk("%08x: %08x\n", (i * 4), readl(&reg[i]));
2901 }
2902
2903 /**
2904  * megasas_dump_fusion_io -     This function will print key details
2905  *                              of SCSI IO
2906  * @scmd:                       SCSI command pointer of SCSI IO
2907  */
2908 void
2909 megasas_dump_fusion_io(struct scsi_cmnd *scmd)
2910 {
2911         struct megasas_cmd_fusion *cmd;
2912         union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
2913         struct megasas_instance *instance;
2914
2915         cmd = (struct megasas_cmd_fusion *)scmd->SCp.ptr;
2916         instance = (struct megasas_instance *)scmd->device->host->hostdata;
2917
2918         scmd_printk(KERN_INFO, scmd,
2919                     "scmd: (0x%p)  retries: 0x%x  allowed: 0x%x\n",
2920                     scmd, scmd->retries, scmd->allowed);
2921         scsi_print_command(scmd);
2922
2923         if (cmd) {
2924                 req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc;
2925                 scmd_printk(KERN_INFO, scmd, "Request descriptor details:\n");
2926                 scmd_printk(KERN_INFO, scmd,
2927                             "RequestFlags:0x%x  MSIxIndex:0x%x  SMID:0x%x  LMID:0x%x  DevHandle:0x%x\n",
2928                             req_desc->SCSIIO.RequestFlags,
2929                             req_desc->SCSIIO.MSIxIndex, req_desc->SCSIIO.SMID,
2930                             req_desc->SCSIIO.LMID, req_desc->SCSIIO.DevHandle);
2931
2932                 printk(KERN_INFO "IO request frame:\n");
2933                 megasas_dump(cmd->io_request,
2934                              MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE, 8);
2935                 printk(KERN_INFO "Chain frame:\n");
2936                 megasas_dump(cmd->sg_frame,
2937                              instance->max_chain_frame_sz, 8);
2938         }
2939
2940 }
2941
2942 /*
2943  * megasas_dump_sys_regs - This function will dump system registers through
2944  *                          sysfs.
2945  * @reg_set:                Pointer to System register set.
2946  * @buf:                    Buffer to which output is to be written.
2947  * @return:                 Number of bytes written to buffer.
2948  */
2949 static inline ssize_t
2950 megasas_dump_sys_regs(void __iomem *reg_set, char *buf)
2951 {
2952         unsigned int i, sz = 256;
2953         int bytes_wrote = 0;
2954         char *loc = (char *)buf;
2955         u32 __iomem *reg = (u32 __iomem *)reg_set;
2956
2957         for (i = 0; i < sz / sizeof(u32); i++) {
2958                 bytes_wrote += snprintf(loc + bytes_wrote, PAGE_SIZE,
2959                                         "%08x: %08x\n", (i * 4),
2960                                         readl(&reg[i]));
2961         }
2962         return bytes_wrote;
2963 }
2964
2965 /**
2966  * megasas_reset_bus_host -     Bus & host reset handler entry point
2967  */
2968 static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
2969 {
2970         int ret;
2971         struct megasas_instance *instance;
2972
2973         instance = (struct megasas_instance *)scmd->device->host->hostdata;
2974
2975         scmd_printk(KERN_INFO, scmd,
2976                 "OCR is requested due to IO timeout!!\n");
2977
2978         scmd_printk(KERN_INFO, scmd,
2979                 "SCSI host state: %d  SCSI host busy: %d  FW outstanding: %d\n",
2980                 scmd->device->host->shost_state,
2981                 scsi_host_busy(scmd->device->host),
2982                 atomic_read(&instance->fw_outstanding));
2983         /*
2984          * First wait for all commands to complete
2985          */
2986         if (instance->adapter_type == MFI_SERIES) {
2987                 ret = megasas_generic_reset(scmd);
2988         } else {
2989                 megasas_dump_fusion_io(scmd);
2990                 ret = megasas_reset_fusion(scmd->device->host,
2991                                 SCSIIO_TIMEOUT_OCR);
2992         }
2993
2994         return ret;
2995 }
2996
2997 /**
2998  * megasas_task_abort - Issues task abort request to firmware
2999  *                      (supported only for fusion adapters)
3000  * @scmd:               SCSI command pointer
3001  */
3002 static int megasas_task_abort(struct scsi_cmnd *scmd)
3003 {
3004         int ret;
3005         struct megasas_instance *instance;
3006
3007         instance = (struct megasas_instance *)scmd->device->host->hostdata;
3008
3009         if (instance->adapter_type != MFI_SERIES)
3010                 ret = megasas_task_abort_fusion(scmd);
3011         else {
3012                 sdev_printk(KERN_NOTICE, scmd->device, "TASK ABORT not supported\n");
3013                 ret = FAILED;
3014         }
3015
3016         return ret;
3017 }
3018
3019 /**
3020  * megasas_reset_target:  Issues target reset request to firmware
3021  *                        (supported only for fusion adapters)
3022  * @scmd:                 SCSI command pointer
3023  */
3024 static int megasas_reset_target(struct scsi_cmnd *scmd)
3025 {
3026         int ret;
3027         struct megasas_instance *instance;
3028
3029         instance = (struct megasas_instance *)scmd->device->host->hostdata;
3030
3031         if (instance->adapter_type != MFI_SERIES)
3032                 ret = megasas_reset_target_fusion(scmd);
3033         else {
3034                 sdev_printk(KERN_NOTICE, scmd->device, "TARGET RESET not supported\n");
3035                 ret = FAILED;
3036         }
3037
3038         return ret;
3039 }
3040
3041 /**
3042  * megasas_bios_param - Returns disk geometry for a disk
3043  * @sdev:               device handle
3044  * @bdev:               block device
3045  * @capacity:           drive capacity
3046  * @geom:               geometry parameters
3047  */
3048 static int
3049 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
3050                  sector_t capacity, int geom[])
3051 {
3052         int heads;
3053         int sectors;
3054         sector_t cylinders;
3055         unsigned long tmp;
3056
3057         /* Default heads (64) & sectors (32) */
3058         heads = 64;
3059         sectors = 32;
3060
3061         tmp = heads * sectors;
3062         cylinders = capacity;
3063
3064         sector_div(cylinders, tmp);
3065
3066         /*
3067          * Handle extended translation size for logical drives > 1Gb
3068          */
3069
3070         if (capacity >= 0x200000) {
3071                 heads = 255;
3072                 sectors = 63;
3073                 tmp = heads*sectors;
3074                 cylinders = capacity;
3075                 sector_div(cylinders, tmp);
3076         }
3077
3078         geom[0] = heads;
3079         geom[1] = sectors;
3080         geom[2] = cylinders;
3081
3082         return 0;
3083 }
3084
3085 static void megasas_aen_polling(struct work_struct *work);
3086
3087 /**
3088  * megasas_service_aen -        Processes an event notification
3089  * @instance:                   Adapter soft state
3090  * @cmd:                        AEN command completed by the ISR
3091  *
3092  * For AEN, driver sends a command down to FW that is held by the FW till an
3093  * event occurs. When an event of interest occurs, FW completes the command
3094  * that it was previously holding.
3095  *
3096  * This routines sends SIGIO signal to processes that have registered with the
3097  * driver for AEN.
3098  */
3099 static void
3100 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
3101 {
3102         unsigned long flags;
3103
3104         /*
3105          * Don't signal app if it is just an aborted previously registered aen
3106          */
3107         if ((!cmd->abort_aen) && (instance->unload == 0)) {
3108                 spin_lock_irqsave(&poll_aen_lock, flags);
3109                 megasas_poll_wait_aen = 1;
3110                 spin_unlock_irqrestore(&poll_aen_lock, flags);
3111                 wake_up(&megasas_poll_wait);
3112                 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
3113         }
3114         else
3115                 cmd->abort_aen = 0;
3116
3117         instance->aen_cmd = NULL;
3118
3119         megasas_return_cmd(instance, cmd);
3120
3121         if ((instance->unload == 0) &&
3122                 ((instance->issuepend_done == 1))) {
3123                 struct megasas_aen_event *ev;
3124
3125                 ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
3126                 if (!ev) {
3127                         dev_err(&instance->pdev->dev, "megasas_service_aen: out of memory\n");
3128                 } else {
3129                         ev->instance = instance;
3130                         instance->ev = ev;
3131                         INIT_DELAYED_WORK(&ev->hotplug_work,
3132                                           megasas_aen_polling);
3133                         schedule_delayed_work(&ev->hotplug_work, 0);
3134                 }
3135         }
3136 }
3137
3138 static ssize_t
3139 fw_crash_buffer_store(struct device *cdev,
3140         struct device_attribute *attr, const char *buf, size_t count)
3141 {
3142         struct Scsi_Host *shost = class_to_shost(cdev);
3143         struct megasas_instance *instance =
3144                 (struct megasas_instance *) shost->hostdata;
3145         int val = 0;
3146         unsigned long flags;
3147
3148         if (kstrtoint(buf, 0, &val) != 0)
3149                 return -EINVAL;
3150
3151         spin_lock_irqsave(&instance->crashdump_lock, flags);
3152         instance->fw_crash_buffer_offset = val;
3153         spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3154         return strlen(buf);
3155 }
3156
3157 static ssize_t
3158 fw_crash_buffer_show(struct device *cdev,
3159         struct device_attribute *attr, char *buf)
3160 {
3161         struct Scsi_Host *shost = class_to_shost(cdev);
3162         struct megasas_instance *instance =
3163                 (struct megasas_instance *) shost->hostdata;
3164         u32 size;
3165         unsigned long dmachunk = CRASH_DMA_BUF_SIZE;
3166         unsigned long chunk_left_bytes;
3167         unsigned long src_addr;
3168         unsigned long flags;
3169         u32 buff_offset;
3170
3171         spin_lock_irqsave(&instance->crashdump_lock, flags);
3172         buff_offset = instance->fw_crash_buffer_offset;
3173         if (!instance->crash_dump_buf &&
3174                 !((instance->fw_crash_state == AVAILABLE) ||
3175                 (instance->fw_crash_state == COPYING))) {
3176                 dev_err(&instance->pdev->dev,
3177                         "Firmware crash dump is not available\n");
3178                 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3179                 return -EINVAL;
3180         }
3181
3182         if (buff_offset > (instance->fw_crash_buffer_size * dmachunk)) {
3183                 dev_err(&instance->pdev->dev,
3184                         "Firmware crash dump offset is out of range\n");
3185                 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3186                 return 0;
3187         }
3188
3189         size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset;
3190         chunk_left_bytes = dmachunk - (buff_offset % dmachunk);
3191         size = (size > chunk_left_bytes) ? chunk_left_bytes : size;
3192         size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size;
3193
3194         src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] +
3195                 (buff_offset % dmachunk);
3196         memcpy(buf, (void *)src_addr, size);
3197         spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3198
3199         return size;
3200 }
3201
3202 static ssize_t
3203 fw_crash_buffer_size_show(struct device *cdev,
3204         struct device_attribute *attr, char *buf)
3205 {
3206         struct Scsi_Host *shost = class_to_shost(cdev);
3207         struct megasas_instance *instance =
3208                 (struct megasas_instance *) shost->hostdata;
3209
3210         return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)
3211                 ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE);
3212 }
3213
3214 static ssize_t
3215 fw_crash_state_store(struct device *cdev,
3216         struct device_attribute *attr, const char *buf, size_t count)
3217 {
3218         struct Scsi_Host *shost = class_to_shost(cdev);
3219         struct megasas_instance *instance =
3220                 (struct megasas_instance *) shost->hostdata;
3221         int val = 0;
3222         unsigned long flags;
3223
3224         if (kstrtoint(buf, 0, &val) != 0)
3225                 return -EINVAL;
3226
3227         if ((val <= AVAILABLE || val > COPY_ERROR)) {
3228                 dev_err(&instance->pdev->dev, "application updates invalid "
3229                         "firmware crash state\n");
3230                 return -EINVAL;
3231         }
3232
3233         instance->fw_crash_state = val;
3234
3235         if ((val == COPIED) || (val == COPY_ERROR)) {
3236                 spin_lock_irqsave(&instance->crashdump_lock, flags);
3237                 megasas_free_host_crash_buffer(instance);
3238                 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3239                 if (val == COPY_ERROR)
3240                         dev_info(&instance->pdev->dev, "application failed to "
3241                                 "copy Firmware crash dump\n");
3242                 else
3243                         dev_info(&instance->pdev->dev, "Firmware crash dump "
3244                                 "copied successfully\n");
3245         }
3246         return strlen(buf);
3247 }
3248
3249 static ssize_t
3250 fw_crash_state_show(struct device *cdev,
3251         struct device_attribute *attr, char *buf)
3252 {
3253         struct Scsi_Host *shost = class_to_shost(cdev);
3254         struct megasas_instance *instance =
3255                 (struct megasas_instance *) shost->hostdata;
3256
3257         return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state);
3258 }
3259
3260 static ssize_t
3261 page_size_show(struct device *cdev,
3262         struct device_attribute *attr, char *buf)
3263 {
3264         return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1);
3265 }
3266
3267 static ssize_t
3268 ldio_outstanding_show(struct device *cdev, struct device_attribute *attr,
3269         char *buf)
3270 {
3271         struct Scsi_Host *shost = class_to_shost(cdev);
3272         struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3273
3274         return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->ldio_outstanding));
3275 }
3276
3277 static ssize_t
3278 fw_cmds_outstanding_show(struct device *cdev,
3279                                  struct device_attribute *attr, char *buf)
3280 {
3281         struct Scsi_Host *shost = class_to_shost(cdev);
3282         struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3283
3284         return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->fw_outstanding));
3285 }
3286
3287 static ssize_t
3288 dump_system_regs_show(struct device *cdev,
3289                                struct device_attribute *attr, char *buf)
3290 {
3291         struct Scsi_Host *shost = class_to_shost(cdev);
3292         struct megasas_instance *instance =
3293                         (struct megasas_instance *)shost->hostdata;
3294
3295         return megasas_dump_sys_regs(instance->reg_set, buf);
3296 }
3297
3298 static ssize_t
3299 raid_map_id_show(struct device *cdev, struct device_attribute *attr,
3300                           char *buf)
3301 {
3302         struct Scsi_Host *shost = class_to_shost(cdev);
3303         struct megasas_instance *instance =
3304                         (struct megasas_instance *)shost->hostdata;
3305
3306         return snprintf(buf, PAGE_SIZE, "%ld\n",
3307                         (unsigned long)instance->map_id);
3308 }
3309
3310 static DEVICE_ATTR_RW(fw_crash_buffer);
3311 static DEVICE_ATTR_RO(fw_crash_buffer_size);
3312 static DEVICE_ATTR_RW(fw_crash_state);
3313 static DEVICE_ATTR_RO(page_size);
3314 static DEVICE_ATTR_RO(ldio_outstanding);
3315 static DEVICE_ATTR_RO(fw_cmds_outstanding);
3316 static DEVICE_ATTR_RO(dump_system_regs);
3317 static DEVICE_ATTR_RO(raid_map_id);
3318
3319 static struct device_attribute *megaraid_host_attrs[] = {
3320         &dev_attr_fw_crash_buffer_size,
3321         &dev_attr_fw_crash_buffer,
3322         &dev_attr_fw_crash_state,
3323         &dev_attr_page_size,
3324         &dev_attr_ldio_outstanding,
3325         &dev_attr_fw_cmds_outstanding,
3326         &dev_attr_dump_system_regs,
3327         &dev_attr_raid_map_id,
3328         NULL,
3329 };
3330
3331 /*
3332  * Scsi host template for megaraid_sas driver
3333  */
3334 static struct scsi_host_template megasas_template = {
3335
3336         .module = THIS_MODULE,
3337         .name = "Avago SAS based MegaRAID driver",
3338         .proc_name = "megaraid_sas",
3339         .slave_configure = megasas_slave_configure,
3340         .slave_alloc = megasas_slave_alloc,
3341         .slave_destroy = megasas_slave_destroy,
3342         .queuecommand = megasas_queue_command,
3343         .eh_target_reset_handler = megasas_reset_target,
3344         .eh_abort_handler = megasas_task_abort,
3345         .eh_host_reset_handler = megasas_reset_bus_host,
3346         .eh_timed_out = megasas_reset_timer,
3347         .shost_attrs = megaraid_host_attrs,
3348         .bios_param = megasas_bios_param,
3349         .change_queue_depth = scsi_change_queue_depth,
3350         .max_segment_size = 0xffffffff,
3351         .no_write_same = 1,
3352 };
3353
3354 /**
3355  * megasas_complete_int_cmd -   Completes an internal command
3356  * @instance:                   Adapter soft state
3357  * @cmd:                        Command to be completed
3358  *
3359  * The megasas_issue_blocked_cmd() function waits for a command to complete
3360  * after it issues a command. This function wakes up that waiting routine by
3361  * calling wake_up() on the wait queue.
3362  */
3363 static void
3364 megasas_complete_int_cmd(struct megasas_instance *instance,
3365                          struct megasas_cmd *cmd)
3366 {
3367         cmd->cmd_status_drv = cmd->frame->io.cmd_status;
3368         wake_up(&instance->int_cmd_wait_q);
3369 }
3370
3371 /**
3372  * megasas_complete_abort -     Completes aborting a command
3373  * @instance:                   Adapter soft state
3374  * @cmd:                        Cmd that was issued to abort another cmd
3375  *
3376  * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
3377  * after it issues an abort on a previously issued command. This function
3378  * wakes up all functions waiting on the same wait queue.
3379  */
3380 static void
3381 megasas_complete_abort(struct megasas_instance *instance,
3382                        struct megasas_cmd *cmd)
3383 {
3384         if (cmd->sync_cmd) {
3385                 cmd->sync_cmd = 0;
3386                 cmd->cmd_status_drv = 0;
3387                 wake_up(&instance->abort_cmd_wait_q);
3388         }
3389 }
3390
3391 /**
3392  * megasas_complete_cmd -       Completes a command
3393  * @instance:                   Adapter soft state
3394  * @cmd:                        Command to be completed
3395  * @alt_status:                 If non-zero, use this value as status to
3396  *                              SCSI mid-layer instead of the value returned
3397  *                              by the FW. This should be used if caller wants
3398  *                              an alternate status (as in the case of aborted
3399  *                              commands)
3400  */
3401 void
3402 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
3403                      u8 alt_status)
3404 {
3405         int exception = 0;
3406         struct megasas_header *hdr = &cmd->frame->hdr;
3407         unsigned long flags;
3408         struct fusion_context *fusion = instance->ctrl_context;
3409         u32 opcode, status;
3410
3411         /* flag for the retry reset */
3412         cmd->retry_for_fw_reset = 0;
3413
3414         if (cmd->scmd)
3415                 cmd->scmd->SCp.ptr = NULL;
3416
3417         switch (hdr->cmd) {
3418         case MFI_CMD_INVALID:
3419                 /* Some older 1068 controller FW may keep a pended
3420                    MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel
3421                    when booting the kdump kernel.  Ignore this command to
3422                    prevent a kernel panic on shutdown of the kdump kernel. */
3423                 dev_warn(&instance->pdev->dev, "MFI_CMD_INVALID command "
3424                        "completed\n");
3425                 dev_warn(&instance->pdev->dev, "If you have a controller "
3426                        "other than PERC5, please upgrade your firmware\n");
3427                 break;
3428         case MFI_CMD_PD_SCSI_IO:
3429         case MFI_CMD_LD_SCSI_IO:
3430
3431                 /*
3432                  * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
3433                  * issued either through an IO path or an IOCTL path. If it
3434                  * was via IOCTL, we will send it to internal completion.
3435                  */
3436                 if (cmd->sync_cmd) {
3437                         cmd->sync_cmd = 0;
3438                         megasas_complete_int_cmd(instance, cmd);
3439                         break;
3440                 }
3441                 /* fall through */
3442
3443         case MFI_CMD_LD_READ:
3444         case MFI_CMD_LD_WRITE:
3445
3446                 if (alt_status) {
3447                         cmd->scmd->result = alt_status << 16;
3448                         exception = 1;
3449                 }
3450
3451                 if (exception) {
3452
3453                         atomic_dec(&instance->fw_outstanding);
3454
3455                         scsi_dma_unmap(cmd->scmd);
3456                         cmd->scmd->scsi_done(cmd->scmd);
3457                         megasas_return_cmd(instance, cmd);
3458
3459                         break;
3460                 }
3461
3462                 switch (hdr->cmd_status) {
3463
3464                 case MFI_STAT_OK:
3465                         cmd->scmd->result = DID_OK << 16;
3466                         break;
3467
3468                 case MFI_STAT_SCSI_IO_FAILED:
3469                 case MFI_STAT_LD_INIT_IN_PROGRESS:
3470                         cmd->scmd->result =
3471                             (DID_ERROR << 16) | hdr->scsi_status;
3472                         break;
3473
3474                 case MFI_STAT_SCSI_DONE_WITH_ERROR:
3475
3476                         cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
3477
3478                         if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
3479                                 memset(cmd->scmd->sense_buffer, 0,
3480                                        SCSI_SENSE_BUFFERSIZE);
3481                                 memcpy(cmd->scmd->sense_buffer, cmd->sense,
3482                                        hdr->sense_len);
3483
3484                                 cmd->scmd->result |= DRIVER_SENSE << 24;
3485                         }
3486
3487                         break;
3488
3489                 case MFI_STAT_LD_OFFLINE:
3490                 case MFI_STAT_DEVICE_NOT_FOUND:
3491                         cmd->scmd->result = DID_BAD_TARGET << 16;
3492                         break;
3493
3494                 default:
3495                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "MFI FW status %#x\n",
3496                                hdr->cmd_status);
3497                         cmd->scmd->result = DID_ERROR << 16;
3498                         break;
3499                 }
3500
3501                 atomic_dec(&instance->fw_outstanding);
3502
3503                 scsi_dma_unmap(cmd->scmd);
3504                 cmd->scmd->scsi_done(cmd->scmd);
3505                 megasas_return_cmd(instance, cmd);
3506
3507                 break;
3508
3509         case MFI_CMD_SMP:
3510         case MFI_CMD_STP:
3511         case MFI_CMD_NVME:
3512         case MFI_CMD_TOOLBOX:
3513                 megasas_complete_int_cmd(instance, cmd);
3514                 break;
3515
3516         case MFI_CMD_DCMD:
3517                 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
3518                 /* Check for LD map update */
3519                 if ((opcode == MR_DCMD_LD_MAP_GET_INFO)
3520                         && (cmd->frame->dcmd.mbox.b[1] == 1)) {
3521                         fusion->fast_path_io = 0;
3522                         spin_lock_irqsave(instance->host->host_lock, flags);
3523                         status = cmd->frame->hdr.cmd_status;
3524                         instance->map_update_cmd = NULL;
3525                         if (status != MFI_STAT_OK) {
3526                                 if (status != MFI_STAT_NOT_FOUND)
3527                                         dev_warn(&instance->pdev->dev, "map syncfailed, status = 0x%x\n",
3528                                                cmd->frame->hdr.cmd_status);
3529                                 else {
3530                                         megasas_return_cmd(instance, cmd);
3531                                         spin_unlock_irqrestore(
3532                                                 instance->host->host_lock,
3533                                                 flags);
3534                                         break;
3535                                 }
3536                         }
3537
3538                         megasas_return_cmd(instance, cmd);
3539
3540                         /*
3541                          * Set fast path IO to ZERO.
3542                          * Validate Map will set proper value.
3543                          * Meanwhile all IOs will go as LD IO.
3544                          */
3545                         if (status == MFI_STAT_OK &&
3546                             (MR_ValidateMapInfo(instance, (instance->map_id + 1)))) {
3547                                 instance->map_id++;
3548                                 fusion->fast_path_io = 1;
3549                         } else {
3550                                 fusion->fast_path_io = 0;
3551                         }
3552
3553                         megasas_sync_map_info(instance);
3554                         spin_unlock_irqrestore(instance->host->host_lock,
3555                                                flags);
3556                         break;
3557                 }
3558                 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
3559                     opcode == MR_DCMD_CTRL_EVENT_GET) {
3560                         spin_lock_irqsave(&poll_aen_lock, flags);
3561                         megasas_poll_wait_aen = 0;
3562                         spin_unlock_irqrestore(&poll_aen_lock, flags);
3563                 }
3564
3565                 /* FW has an updated PD sequence */
3566                 if ((opcode == MR_DCMD_SYSTEM_PD_MAP_GET_INFO) &&
3567                         (cmd->frame->dcmd.mbox.b[0] == 1)) {
3568
3569                         spin_lock_irqsave(instance->host->host_lock, flags);
3570                         status = cmd->frame->hdr.cmd_status;
3571                         instance->jbod_seq_cmd = NULL;
3572                         megasas_return_cmd(instance, cmd);
3573
3574                         if (status == MFI_STAT_OK) {
3575                                 instance->pd_seq_map_id++;
3576                                 /* Re-register a pd sync seq num cmd */
3577                                 if (megasas_sync_pd_seq_num(instance, true))
3578                                         instance->use_seqnum_jbod_fp = false;
3579                         } else
3580                                 instance->use_seqnum_jbod_fp = false;
3581
3582                         spin_unlock_irqrestore(instance->host->host_lock, flags);
3583                         break;
3584                 }
3585
3586                 /*
3587                  * See if got an event notification
3588                  */
3589                 if (opcode == MR_DCMD_CTRL_EVENT_WAIT)
3590                         megasas_service_aen(instance, cmd);
3591                 else
3592                         megasas_complete_int_cmd(instance, cmd);
3593
3594                 break;
3595
3596         case MFI_CMD_ABORT:
3597                 /*
3598                  * Cmd issued to abort another cmd returned
3599                  */
3600                 megasas_complete_abort(instance, cmd);
3601                 break;
3602
3603         default:
3604                 dev_info(&instance->pdev->dev, "Unknown command completed! [0x%X]\n",
3605                        hdr->cmd);
3606                 megasas_complete_int_cmd(instance, cmd);
3607                 break;
3608         }
3609 }
3610
3611 /**
3612  * megasas_issue_pending_cmds_again -   issue all pending cmds
3613  *                                      in FW again because of the fw reset
3614  * @instance:                           Adapter soft state
3615  */
3616 static inline void
3617 megasas_issue_pending_cmds_again(struct megasas_instance *instance)
3618 {
3619         struct megasas_cmd *cmd;
3620         struct list_head clist_local;
3621         union megasas_evt_class_locale class_locale;
3622         unsigned long flags;
3623         u32 seq_num;
3624
3625         INIT_LIST_HEAD(&clist_local);
3626         spin_lock_irqsave(&instance->hba_lock, flags);
3627         list_splice_init(&instance->internal_reset_pending_q, &clist_local);
3628         spin_unlock_irqrestore(&instance->hba_lock, flags);
3629
3630         while (!list_empty(&clist_local)) {
3631                 cmd = list_entry((&clist_local)->next,
3632                                         struct megasas_cmd, list);
3633                 list_del_init(&cmd->list);
3634
3635                 if (cmd->sync_cmd || cmd->scmd) {
3636                         dev_notice(&instance->pdev->dev, "command %p, %p:%d"
3637                                 "detected to be pending while HBA reset\n",
3638                                         cmd, cmd->scmd, cmd->sync_cmd);
3639
3640                         cmd->retry_for_fw_reset++;
3641
3642                         if (cmd->retry_for_fw_reset == 3) {
3643                                 dev_notice(&instance->pdev->dev, "cmd %p, %p:%d"
3644                                         "was tried multiple times during reset."
3645                                         "Shutting down the HBA\n",
3646                                         cmd, cmd->scmd, cmd->sync_cmd);
3647                                 instance->instancet->disable_intr(instance);
3648                                 atomic_set(&instance->fw_reset_no_pci_access, 1);
3649                                 megaraid_sas_kill_hba(instance);
3650                                 return;
3651                         }
3652                 }
3653
3654                 if (cmd->sync_cmd == 1) {
3655                         if (cmd->scmd) {
3656                                 dev_notice(&instance->pdev->dev, "unexpected"
3657                                         "cmd attached to internal command!\n");
3658                         }
3659                         dev_notice(&instance->pdev->dev, "%p synchronous cmd"
3660                                                 "on the internal reset queue,"
3661                                                 "issue it again.\n", cmd);
3662                         cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
3663                         instance->instancet->fire_cmd(instance,
3664                                                         cmd->frame_phys_addr,
3665                                                         0, instance->reg_set);
3666                 } else if (cmd->scmd) {
3667                         dev_notice(&instance->pdev->dev, "%p scsi cmd [%02x]"
3668                         "detected on the internal queue, issue again.\n",
3669                         cmd, cmd->scmd->cmnd[0]);
3670
3671                         atomic_inc(&instance->fw_outstanding);
3672                         instance->instancet->fire_cmd(instance,
3673                                         cmd->frame_phys_addr,
3674                                         cmd->frame_count-1, instance->reg_set);
3675                 } else {
3676                         dev_notice(&instance->pdev->dev, "%p unexpected cmd on the"
3677                                 "internal reset defer list while re-issue!!\n",
3678                                 cmd);
3679                 }
3680         }
3681
3682         if (instance->aen_cmd) {
3683                 dev_notice(&instance->pdev->dev, "aen_cmd in def process\n");
3684                 megasas_return_cmd(instance, instance->aen_cmd);
3685
3686                 instance->aen_cmd = NULL;
3687         }
3688
3689         /*
3690          * Initiate AEN (Asynchronous Event Notification)
3691          */
3692         seq_num = instance->last_seq_num;
3693         class_locale.members.reserved = 0;
3694         class_locale.members.locale = MR_EVT_LOCALE_ALL;
3695         class_locale.members.class = MR_EVT_CLASS_DEBUG;
3696
3697         megasas_register_aen(instance, seq_num, class_locale.word);
3698 }
3699
3700 /**
3701  * Move the internal reset pending commands to a deferred queue.
3702  *
3703  * We move the commands pending at internal reset time to a
3704  * pending queue. This queue would be flushed after successful
3705  * completion of the internal reset sequence. if the internal reset
3706  * did not complete in time, the kernel reset handler would flush
3707  * these commands.
3708  **/
3709 static void
3710 megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
3711 {
3712         struct megasas_cmd *cmd;
3713         int i;
3714         u16 max_cmd = instance->max_fw_cmds;
3715         u32 defer_index;
3716         unsigned long flags;
3717
3718         defer_index = 0;
3719         spin_lock_irqsave(&instance->mfi_pool_lock, flags);
3720         for (i = 0; i < max_cmd; i++) {
3721                 cmd = instance->cmd_list[i];
3722                 if (cmd->sync_cmd == 1 || cmd->scmd) {
3723                         dev_notice(&instance->pdev->dev, "moving cmd[%d]:%p:%d:%p"
3724                                         "on the defer queue as internal\n",
3725                                 defer_index, cmd, cmd->sync_cmd, cmd->scmd);
3726
3727                         if (!list_empty(&cmd->list)) {
3728                                 dev_notice(&instance->pdev->dev, "ERROR while"
3729                                         " moving this cmd:%p, %d %p, it was"
3730                                         "discovered on some list?\n",
3731                                         cmd, cmd->sync_cmd, cmd->scmd);
3732
3733                                 list_del_init(&cmd->list);
3734                         }
3735                         defer_index++;
3736                         list_add_tail(&cmd->list,
3737                                 &instance->internal_reset_pending_q);
3738                 }
3739         }
3740         spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
3741 }
3742
3743
3744 static void
3745 process_fw_state_change_wq(struct work_struct *work)
3746 {
3747         struct megasas_instance *instance =
3748                 container_of(work, struct megasas_instance, work_init);
3749         u32 wait;
3750         unsigned long flags;
3751
3752     if (atomic_read(&instance->adprecovery) != MEGASAS_ADPRESET_SM_INFAULT) {
3753                 dev_notice(&instance->pdev->dev, "error, recovery st %x\n",
3754                                 atomic_read(&instance->adprecovery));
3755                 return ;
3756         }
3757
3758         if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
3759                 dev_notice(&instance->pdev->dev, "FW detected to be in fault"
3760                                         "state, restarting it...\n");
3761
3762                 instance->instancet->disable_intr(instance);
3763                 atomic_set(&instance->fw_outstanding, 0);
3764
3765                 atomic_set(&instance->fw_reset_no_pci_access, 1);
3766                 instance->instancet->adp_reset(instance, instance->reg_set);
3767                 atomic_set(&instance->fw_reset_no_pci_access, 0);
3768
3769                 dev_notice(&instance->pdev->dev, "FW restarted successfully,"
3770                                         "initiating next stage...\n");
3771
3772                 dev_notice(&instance->pdev->dev, "HBA recovery state machine,"
3773                                         "state 2 starting...\n");
3774
3775                 /* waiting for about 20 second before start the second init */
3776                 for (wait = 0; wait < 30; wait++) {
3777                         msleep(1000);
3778                 }
3779
3780                 if (megasas_transition_to_ready(instance, 1)) {
3781                         dev_notice(&instance->pdev->dev, "adapter not ready\n");
3782
3783                         atomic_set(&instance->fw_reset_no_pci_access, 1);
3784                         megaraid_sas_kill_hba(instance);
3785                         return ;
3786                 }
3787
3788                 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
3789                         (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
3790                         (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
3791                         ) {
3792                         *instance->consumer = *instance->producer;
3793                 } else {
3794                         *instance->consumer = 0;
3795                         *instance->producer = 0;
3796                 }
3797
3798                 megasas_issue_init_mfi(instance);
3799
3800                 spin_lock_irqsave(&instance->hba_lock, flags);
3801                 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
3802                 spin_unlock_irqrestore(&instance->hba_lock, flags);
3803                 instance->instancet->enable_intr(instance);
3804
3805                 megasas_issue_pending_cmds_again(instance);
3806                 instance->issuepend_done = 1;
3807         }
3808 }
3809
3810 /**
3811  * megasas_deplete_reply_queue -        Processes all completed commands
3812  * @instance:                           Adapter soft state
3813  * @alt_status:                         Alternate status to be returned to
3814  *                                      SCSI mid-layer instead of the status
3815  *                                      returned by the FW
3816  * Note: this must be called with hba lock held
3817  */
3818 static int
3819 megasas_deplete_reply_queue(struct megasas_instance *instance,
3820                                         u8 alt_status)
3821 {
3822         u32 mfiStatus;
3823         u32 fw_state;
3824
3825         if ((mfiStatus = instance->instancet->check_reset(instance,
3826                                         instance->reg_set)) == 1) {
3827                 return IRQ_HANDLED;
3828         }
3829
3830         mfiStatus = instance->instancet->clear_intr(instance);
3831         if (mfiStatus == 0) {
3832                 /* Hardware may not set outbound_intr_status in MSI-X mode */
3833                 if (!instance->msix_vectors)
3834                         return IRQ_NONE;
3835         }
3836
3837         instance->mfiStatus = mfiStatus;
3838
3839         if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
3840                 fw_state = instance->instancet->read_fw_status_reg(
3841                                 instance) & MFI_STATE_MASK;
3842
3843                 if (fw_state != MFI_STATE_FAULT) {
3844                         dev_notice(&instance->pdev->dev, "fw state:%x\n",
3845                                                 fw_state);
3846                 }
3847
3848                 if ((fw_state == MFI_STATE_FAULT) &&
3849                                 (instance->disableOnlineCtrlReset == 0)) {
3850                         dev_notice(&instance->pdev->dev, "wait adp restart\n");
3851
3852                         if ((instance->pdev->device ==
3853                                         PCI_DEVICE_ID_LSI_SAS1064R) ||
3854                                 (instance->pdev->device ==
3855                                         PCI_DEVICE_ID_DELL_PERC5) ||
3856                                 (instance->pdev->device ==
3857                                         PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
3858
3859                                 *instance->consumer =
3860                                         cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
3861                         }
3862
3863
3864                         instance->instancet->disable_intr(instance);
3865                         atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
3866                         instance->issuepend_done = 0;
3867
3868                         atomic_set(&instance->fw_outstanding, 0);
3869                         megasas_internal_reset_defer_cmds(instance);
3870
3871                         dev_notice(&instance->pdev->dev, "fwState=%x, stage:%d\n",
3872                                         fw_state, atomic_read(&instance->adprecovery));
3873
3874                         schedule_work(&instance->work_init);
3875                         return IRQ_HANDLED;
3876
3877                 } else {
3878                         dev_notice(&instance->pdev->dev, "fwstate:%x, dis_OCR=%x\n",
3879                                 fw_state, instance->disableOnlineCtrlReset);
3880                 }
3881         }
3882
3883         tasklet_schedule(&instance->isr_tasklet);
3884         return IRQ_HANDLED;
3885 }
3886 /**
3887  * megasas_isr - isr entry point
3888  */
3889 static irqreturn_t megasas_isr(int irq, void *devp)
3890 {
3891         struct megasas_irq_context *irq_context = devp;
3892         struct megasas_instance *instance = irq_context->instance;
3893         unsigned long flags;
3894         irqreturn_t rc;
3895
3896         if (atomic_read(&instance->fw_reset_no_pci_access))
3897                 return IRQ_HANDLED;
3898
3899         spin_lock_irqsave(&instance->hba_lock, flags);
3900         rc = megasas_deplete_reply_queue(instance, DID_OK);
3901         spin_unlock_irqrestore(&instance->hba_lock, flags);
3902
3903         return rc;
3904 }
3905
3906 /**
3907  * megasas_transition_to_ready -        Move the FW to READY state
3908  * @instance:                           Adapter soft state
3909  *
3910  * During the initialization, FW passes can potentially be in any one of
3911  * several possible states. If the FW in operational, waiting-for-handshake
3912  * states, driver must take steps to bring it to ready state. Otherwise, it
3913  * has to wait for the ready state.
3914  */
3915 int
3916 megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
3917 {
3918         int i;
3919         u8 max_wait;
3920         u32 fw_state;
3921         u32 abs_state, curr_abs_state;
3922
3923         abs_state = instance->instancet->read_fw_status_reg(instance);
3924         fw_state = abs_state & MFI_STATE_MASK;
3925
3926         if (fw_state != MFI_STATE_READY)
3927                 dev_info(&instance->pdev->dev, "Waiting for FW to come to ready"
3928                        " state\n");
3929
3930         while (fw_state != MFI_STATE_READY) {
3931
3932                 switch (fw_state) {
3933
3934                 case MFI_STATE_FAULT:
3935                         dev_printk(KERN_ERR, &instance->pdev->dev,
3936                                    "FW in FAULT state, Fault code:0x%x subcode:0x%x func:%s\n",
3937                                    abs_state & MFI_STATE_FAULT_CODE,
3938                                    abs_state & MFI_STATE_FAULT_SUBCODE, __func__);
3939                         if (ocr) {
3940                                 max_wait = MEGASAS_RESET_WAIT_TIME;
3941                                 break;
3942                         } else {
3943                                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
3944                                 megasas_dump_reg_set(instance->reg_set);
3945                                 return -ENODEV;
3946                         }
3947
3948                 case MFI_STATE_WAIT_HANDSHAKE:
3949                         /*
3950                          * Set the CLR bit in inbound doorbell
3951                          */
3952                         if ((instance->pdev->device ==
3953                                 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3954                                 (instance->pdev->device ==
3955                                  PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3956                                 (instance->adapter_type != MFI_SERIES))
3957                                 writel(
3958                                   MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
3959                                   &instance->reg_set->doorbell);
3960                         else
3961                                 writel(
3962                                     MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
3963                                         &instance->reg_set->inbound_doorbell);
3964
3965                         max_wait = MEGASAS_RESET_WAIT_TIME;
3966                         break;
3967
3968                 case MFI_STATE_BOOT_MESSAGE_PENDING:
3969                         if ((instance->pdev->device ==
3970                              PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3971                                 (instance->pdev->device ==
3972                                  PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3973                                 (instance->adapter_type != MFI_SERIES))
3974                                 writel(MFI_INIT_HOTPLUG,
3975                                        &instance->reg_set->doorbell);
3976                         else
3977                                 writel(MFI_INIT_HOTPLUG,
3978                                         &instance->reg_set->inbound_doorbell);
3979
3980                         max_wait = MEGASAS_RESET_WAIT_TIME;
3981                         break;
3982
3983                 case MFI_STATE_OPERATIONAL:
3984                         /*
3985                          * Bring it to READY state; assuming max wait 10 secs
3986                          */
3987                         instance->instancet->disable_intr(instance);
3988                         if ((instance->pdev->device ==
3989                                 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3990                                 (instance->pdev->device ==
3991                                 PCI_DEVICE_ID_LSI_SAS0071SKINNY)  ||
3992                                 (instance->adapter_type != MFI_SERIES)) {
3993                                 writel(MFI_RESET_FLAGS,
3994                                         &instance->reg_set->doorbell);
3995
3996                                 if (instance->adapter_type != MFI_SERIES) {
3997                                         for (i = 0; i < (10 * 1000); i += 20) {
3998                                                 if (megasas_readl(
3999                                                             instance,
4000                                                             &instance->
4001                                                             reg_set->
4002                                                             doorbell) & 1)
4003                                                         msleep(20);
4004                                                 else
4005                                                         break;
4006                                         }
4007                                 }
4008                         } else
4009                                 writel(MFI_RESET_FLAGS,
4010                                         &instance->reg_set->inbound_doorbell);
4011
4012                         max_wait = MEGASAS_RESET_WAIT_TIME;
4013                         break;
4014
4015                 case MFI_STATE_UNDEFINED:
4016                         /*
4017                          * This state should not last for more than 2 seconds
4018                          */
4019                         max_wait = MEGASAS_RESET_WAIT_TIME;
4020                         break;
4021
4022                 case MFI_STATE_BB_INIT:
4023                         max_wait = MEGASAS_RESET_WAIT_TIME;
4024                         break;
4025
4026                 case MFI_STATE_FW_INIT:
4027                         max_wait = MEGASAS_RESET_WAIT_TIME;
4028                         break;
4029
4030                 case MFI_STATE_FW_INIT_2:
4031                         max_wait = MEGASAS_RESET_WAIT_TIME;
4032                         break;
4033
4034                 case MFI_STATE_DEVICE_SCAN:
4035                         max_wait = MEGASAS_RESET_WAIT_TIME;
4036                         break;
4037
4038                 case MFI_STATE_FLUSH_CACHE:
4039                         max_wait = MEGASAS_RESET_WAIT_TIME;
4040                         break;
4041
4042                 default:
4043                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "Unknown state 0x%x\n",
4044                                fw_state);
4045                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4046                         megasas_dump_reg_set(instance->reg_set);
4047                         return -ENODEV;
4048                 }
4049
4050                 /*
4051                  * The cur_state should not last for more than max_wait secs
4052                  */
4053                 for (i = 0; i < max_wait * 50; i++) {
4054                         curr_abs_state = instance->instancet->
4055                                 read_fw_status_reg(instance);
4056
4057                         if (abs_state == curr_abs_state) {
4058                                 msleep(20);
4059                         } else
4060                                 break;
4061                 }
4062
4063                 /*
4064                  * Return error if fw_state hasn't changed after max_wait
4065                  */
4066                 if (curr_abs_state == abs_state) {
4067                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW state [%d] hasn't changed "
4068                                "in %d secs\n", fw_state, max_wait);
4069                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4070                         megasas_dump_reg_set(instance->reg_set);
4071                         return -ENODEV;
4072                 }
4073
4074                 abs_state = curr_abs_state;
4075                 fw_state = curr_abs_state & MFI_STATE_MASK;
4076         }
4077         dev_info(&instance->pdev->dev, "FW now in Ready state\n");
4078
4079         return 0;
4080 }
4081
4082 /**
4083  * megasas_teardown_frame_pool -        Destroy the cmd frame DMA pool
4084  * @instance:                           Adapter soft state
4085  */
4086 static void megasas_teardown_frame_pool(struct megasas_instance *instance)
4087 {
4088         int i;
4089         u16 max_cmd = instance->max_mfi_cmds;
4090         struct megasas_cmd *cmd;
4091
4092         if (!instance->frame_dma_pool)
4093                 return;
4094
4095         /*
4096          * Return all frames to pool
4097          */
4098         for (i = 0; i < max_cmd; i++) {
4099
4100                 cmd = instance->cmd_list[i];
4101
4102                 if (cmd->frame)
4103                         dma_pool_free(instance->frame_dma_pool, cmd->frame,
4104                                       cmd->frame_phys_addr);
4105
4106                 if (cmd->sense)
4107                         dma_pool_free(instance->sense_dma_pool, cmd->sense,
4108                                       cmd->sense_phys_addr);
4109         }
4110
4111         /*
4112          * Now destroy the pool itself
4113          */
4114         dma_pool_destroy(instance->frame_dma_pool);
4115         dma_pool_destroy(instance->sense_dma_pool);
4116
4117         instance->frame_dma_pool = NULL;
4118         instance->sense_dma_pool = NULL;
4119 }
4120
4121 /**
4122  * megasas_create_frame_pool -  Creates DMA pool for cmd frames
4123  * @instance:                   Adapter soft state
4124  *
4125  * Each command packet has an embedded DMA memory buffer that is used for
4126  * filling MFI frame and the SG list that immediately follows the frame. This
4127  * function creates those DMA memory buffers for each command packet by using
4128  * PCI pool facility.
4129  */
4130 static int megasas_create_frame_pool(struct megasas_instance *instance)
4131 {
4132         int i;
4133         u16 max_cmd;
4134         u32 frame_count;
4135         struct megasas_cmd *cmd;
4136
4137         max_cmd = instance->max_mfi_cmds;
4138
4139         /*
4140          * For MFI controllers.
4141          * max_num_sge = 60
4142          * max_sge_sz  = 16 byte (sizeof megasas_sge_skinny)
4143          * Total 960 byte (15 MFI frame of 64 byte)
4144          *
4145          * Fusion adapter require only 3 extra frame.
4146          * max_num_sge = 16 (defined as MAX_IOCTL_SGE)
4147          * max_sge_sz  = 12 byte (sizeof  megasas_sge64)
4148          * Total 192 byte (3 MFI frame of 64 byte)
4149          */
4150         frame_count = (instance->adapter_type == MFI_SERIES) ?
4151                         (15 + 1) : (3 + 1);
4152         instance->mfi_frame_size = MEGAMFI_FRAME_SIZE * frame_count;
4153         /*
4154          * Use DMA pool facility provided by PCI layer
4155          */
4156         instance->frame_dma_pool = dma_pool_create("megasas frame pool",
4157                                         &instance->pdev->dev,
4158                                         instance->mfi_frame_size, 256, 0);
4159
4160         if (!instance->frame_dma_pool) {
4161                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup frame pool\n");
4162                 return -ENOMEM;
4163         }
4164
4165         instance->sense_dma_pool = dma_pool_create("megasas sense pool",
4166                                                    &instance->pdev->dev, 128,
4167                                                    4, 0);
4168
4169         if (!instance->sense_dma_pool) {
4170                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup sense pool\n");
4171
4172                 dma_pool_destroy(instance->frame_dma_pool);
4173                 instance->frame_dma_pool = NULL;
4174
4175                 return -ENOMEM;
4176         }
4177
4178         /*
4179          * Allocate and attach a frame to each of the commands in cmd_list.
4180          * By making cmd->index as the context instead of the &cmd, we can
4181          * always use 32bit context regardless of the architecture
4182          */
4183         for (i = 0; i < max_cmd; i++) {
4184
4185                 cmd = instance->cmd_list[i];
4186
4187                 cmd->frame = dma_pool_zalloc(instance->frame_dma_pool,
4188                                             GFP_KERNEL, &cmd->frame_phys_addr);
4189
4190                 cmd->sense = dma_pool_alloc(instance->sense_dma_pool,
4191                                             GFP_KERNEL, &cmd->sense_phys_addr);
4192
4193                 /*
4194                  * megasas_teardown_frame_pool() takes care of freeing
4195                  * whatever has been allocated
4196                  */
4197                 if (!cmd->frame || !cmd->sense) {
4198                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "dma_pool_alloc failed\n");
4199                         megasas_teardown_frame_pool(instance);
4200                         return -ENOMEM;
4201                 }
4202
4203                 cmd->frame->io.context = cpu_to_le32(cmd->index);
4204                 cmd->frame->io.pad_0 = 0;
4205                 if ((instance->adapter_type == MFI_SERIES) && reset_devices)
4206                         cmd->frame->hdr.cmd = MFI_CMD_INVALID;
4207         }
4208
4209         return 0;
4210 }
4211
4212 /**
4213  * megasas_free_cmds -  Free all the cmds in the free cmd pool
4214  * @instance:           Adapter soft state
4215  */
4216 void megasas_free_cmds(struct megasas_instance *instance)
4217 {
4218         int i;
4219
4220         /* First free the MFI frame pool */
4221         megasas_teardown_frame_pool(instance);
4222
4223         /* Free all the commands in the cmd_list */
4224         for (i = 0; i < instance->max_mfi_cmds; i++)
4225
4226                 kfree(instance->cmd_list[i]);
4227
4228         /* Free the cmd_list buffer itself */
4229         kfree(instance->cmd_list);
4230         instance->cmd_list = NULL;
4231
4232         INIT_LIST_HEAD(&instance->cmd_pool);
4233 }
4234
4235 /**
4236  * megasas_alloc_cmds - Allocates the command packets
4237  * @instance:           Adapter soft state
4238  *
4239  * Each command that is issued to the FW, whether IO commands from the OS or
4240  * internal commands like IOCTLs, are wrapped in local data structure called
4241  * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
4242  * the FW.
4243  *
4244  * Each frame has a 32-bit field called context (tag). This context is used
4245  * to get back the megasas_cmd from the frame when a frame gets completed in
4246  * the ISR. Typically the address of the megasas_cmd itself would be used as
4247  * the context. But we wanted to keep the differences between 32 and 64 bit
4248  * systems to the mininum. We always use 32 bit integers for the context. In
4249  * this driver, the 32 bit values are the indices into an array cmd_list.
4250  * This array is used only to look up the megasas_cmd given the context. The
4251  * free commands themselves are maintained in a linked list called cmd_pool.
4252  */
4253 int megasas_alloc_cmds(struct megasas_instance *instance)
4254 {
4255         int i;
4256         int j;
4257         u16 max_cmd;
4258         struct megasas_cmd *cmd;
4259
4260         max_cmd = instance->max_mfi_cmds;
4261
4262         /*
4263          * instance->cmd_list is an array of struct megasas_cmd pointers.
4264          * Allocate the dynamic array first and then allocate individual
4265          * commands.
4266          */
4267         instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
4268
4269         if (!instance->cmd_list) {
4270                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "out of memory\n");
4271                 return -ENOMEM;
4272         }
4273
4274         memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd);
4275
4276         for (i = 0; i < max_cmd; i++) {
4277                 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
4278                                                 GFP_KERNEL);
4279
4280                 if (!instance->cmd_list[i]) {
4281
4282                         for (j = 0; j < i; j++)
4283                                 kfree(instance->cmd_list[j]);
4284
4285                         kfree(instance->cmd_list);
4286                         instance->cmd_list = NULL;
4287
4288                         return -ENOMEM;
4289                 }
4290         }
4291
4292         for (i = 0; i < max_cmd; i++) {
4293                 cmd = instance->cmd_list[i];
4294                 memset(cmd, 0, sizeof(struct megasas_cmd));
4295                 cmd->index = i;
4296                 cmd->scmd = NULL;
4297                 cmd->instance = instance;
4298
4299                 list_add_tail(&cmd->list, &instance->cmd_pool);
4300         }
4301
4302         /*
4303          * Create a frame pool and assign one frame to each cmd
4304          */
4305         if (megasas_create_frame_pool(instance)) {
4306                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error creating frame DMA pool\n");
4307                 megasas_free_cmds(instance);
4308                 return -ENOMEM;
4309         }
4310
4311         return 0;
4312 }
4313
4314 /*
4315  * dcmd_timeout_ocr_possible -  Check if OCR is possible based on Driver/FW state.
4316  * @instance:                           Adapter soft state
4317  *
4318  * Return 0 for only Fusion adapter, if driver load/unload is not in progress
4319  * or FW is not under OCR.
4320  */
4321 inline int
4322 dcmd_timeout_ocr_possible(struct megasas_instance *instance) {
4323
4324         if (instance->adapter_type == MFI_SERIES)
4325                 return KILL_ADAPTER;
4326         else if (instance->unload ||
4327                         test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags))
4328                 return IGNORE_TIMEOUT;
4329         else
4330                 return INITIATE_OCR;
4331 }
4332
4333 static void
4334 megasas_get_pd_info(struct megasas_instance *instance, struct scsi_device *sdev)
4335 {
4336         int ret;
4337         struct megasas_cmd *cmd;
4338         struct megasas_dcmd_frame *dcmd;
4339
4340         struct MR_PRIV_DEVICE *mr_device_priv_data;
4341         u16 device_id = 0;
4342
4343         device_id = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + sdev->id;
4344         cmd = megasas_get_cmd(instance);
4345
4346         if (!cmd) {
4347                 dev_err(&instance->pdev->dev, "Failed to get cmd %s\n", __func__);
4348                 return;
4349         }
4350
4351         dcmd = &cmd->frame->dcmd;
4352
4353         memset(instance->pd_info, 0, sizeof(*instance->pd_info));
4354         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4355
4356         dcmd->mbox.s[0] = cpu_to_le16(device_id);
4357         dcmd->cmd = MFI_CMD_DCMD;
4358         dcmd->cmd_status = 0xFF;
4359         dcmd->sge_count = 1;
4360         dcmd->flags = MFI_FRAME_DIR_READ;
4361         dcmd->timeout = 0;
4362         dcmd->pad_0 = 0;
4363         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_PD_INFO));
4364         dcmd->opcode = cpu_to_le32(MR_DCMD_PD_GET_INFO);
4365
4366         megasas_set_dma_settings(instance, dcmd, instance->pd_info_h,
4367                                  sizeof(struct MR_PD_INFO));
4368
4369         if ((instance->adapter_type != MFI_SERIES) &&
4370             !instance->mask_interrupts)
4371                 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4372         else
4373                 ret = megasas_issue_polled(instance, cmd);
4374
4375         switch (ret) {
4376         case DCMD_SUCCESS:
4377                 mr_device_priv_data = sdev->hostdata;
4378                 le16_to_cpus((u16 *)&instance->pd_info->state.ddf.pdType);
4379                 mr_device_priv_data->interface_type =
4380                                 instance->pd_info->state.ddf.pdType.intf;
4381                 break;
4382
4383         case DCMD_TIMEOUT:
4384
4385                 switch (dcmd_timeout_ocr_possible(instance)) {
4386                 case INITIATE_OCR:
4387                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4388                         mutex_unlock(&instance->reset_mutex);
4389                         megasas_reset_fusion(instance->host,
4390                                 MFI_IO_TIMEOUT_OCR);
4391                         mutex_lock(&instance->reset_mutex);
4392                         break;
4393                 case KILL_ADAPTER:
4394                         megaraid_sas_kill_hba(instance);
4395                         break;
4396                 case IGNORE_TIMEOUT:
4397                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4398                                 __func__, __LINE__);
4399                         break;
4400                 }
4401
4402                 break;
4403         }
4404
4405         if (ret != DCMD_TIMEOUT)
4406                 megasas_return_cmd(instance, cmd);
4407
4408         return;
4409 }
4410 /*
4411  * megasas_get_pd_list_info -   Returns FW's pd_list structure
4412  * @instance:                           Adapter soft state
4413  * @pd_list:                            pd_list structure
4414  *
4415  * Issues an internal command (DCMD) to get the FW's controller PD
4416  * list structure.  This information is mainly used to find out SYSTEM
4417  * supported by the FW.
4418  */
4419 static int
4420 megasas_get_pd_list(struct megasas_instance *instance)
4421 {
4422         int ret = 0, pd_index = 0;
4423         struct megasas_cmd *cmd;
4424         struct megasas_dcmd_frame *dcmd;
4425         struct MR_PD_LIST *ci;
4426         struct MR_PD_ADDRESS *pd_addr;
4427
4428         if (instance->pd_list_not_supported) {
4429                 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4430                 "not supported by firmware\n");
4431                 return ret;
4432         }
4433
4434         ci = instance->pd_list_buf;
4435
4436         cmd = megasas_get_cmd(instance);
4437
4438         if (!cmd) {
4439                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "(get_pd_list): Failed to get cmd\n");
4440                 return -ENOMEM;
4441         }
4442
4443         dcmd = &cmd->frame->dcmd;
4444
4445         memset(ci, 0, sizeof(*ci));
4446         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4447
4448         dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
4449         dcmd->mbox.b[1] = 0;
4450         dcmd->cmd = MFI_CMD_DCMD;
4451         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4452         dcmd->sge_count = 1;
4453         dcmd->flags = MFI_FRAME_DIR_READ;
4454         dcmd->timeout = 0;
4455         dcmd->pad_0 = 0;
4456         dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
4457         dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY);
4458
4459         megasas_set_dma_settings(instance, dcmd, instance->pd_list_buf_h,
4460                                  (MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST)));
4461
4462         if ((instance->adapter_type != MFI_SERIES) &&
4463             !instance->mask_interrupts)
4464                 ret = megasas_issue_blocked_cmd(instance, cmd,
4465                         MFI_IO_TIMEOUT_SECS);
4466         else
4467                 ret = megasas_issue_polled(instance, cmd);
4468
4469         switch (ret) {
4470         case DCMD_FAILED:
4471                 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4472                         "failed/not supported by firmware\n");
4473
4474                 if (instance->adapter_type != MFI_SERIES)
4475                         megaraid_sas_kill_hba(instance);
4476                 else
4477                         instance->pd_list_not_supported = 1;
4478                 break;
4479         case DCMD_TIMEOUT:
4480
4481                 switch (dcmd_timeout_ocr_possible(instance)) {
4482                 case INITIATE_OCR:
4483                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4484                         /*
4485                          * DCMD failed from AEN path.
4486                          * AEN path already hold reset_mutex to avoid PCI access
4487                          * while OCR is in progress.
4488                          */
4489                         mutex_unlock(&instance->reset_mutex);
4490                         megasas_reset_fusion(instance->host,
4491                                                 MFI_IO_TIMEOUT_OCR);
4492                         mutex_lock(&instance->reset_mutex);
4493                         break;
4494                 case KILL_ADAPTER:
4495                         megaraid_sas_kill_hba(instance);
4496                         break;
4497                 case IGNORE_TIMEOUT:
4498                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d \n",
4499                                 __func__, __LINE__);
4500                         break;
4501                 }
4502
4503                 break;
4504
4505         case DCMD_SUCCESS:
4506                 pd_addr = ci->addr;
4507                 if (megasas_dbg_lvl & LD_PD_DEBUG)
4508                         dev_info(&instance->pdev->dev, "%s, sysPD count: 0x%x\n",
4509                                  __func__, le32_to_cpu(ci->count));
4510
4511                 if ((le32_to_cpu(ci->count) >
4512                         (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL)))
4513                         break;
4514
4515                 memset(instance->local_pd_list, 0,
4516                                 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
4517
4518                 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) {
4519                         instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid     =
4520                                         le16_to_cpu(pd_addr->deviceId);
4521                         instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType       =
4522                                         pd_addr->scsiDevType;
4523                         instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState      =
4524                                         MR_PD_STATE_SYSTEM;
4525                         if (megasas_dbg_lvl & LD_PD_DEBUG)
4526                                 dev_info(&instance->pdev->dev,
4527                                          "PD%d: targetID: 0x%03x deviceType:0x%x\n",
4528                                          pd_index, le16_to_cpu(pd_addr->deviceId),
4529                                          pd_addr->scsiDevType);
4530                         pd_addr++;
4531                 }
4532
4533                 memcpy(instance->pd_list, instance->local_pd_list,
4534                         sizeof(instance->pd_list));
4535                 break;
4536
4537         }
4538
4539         if (ret != DCMD_TIMEOUT)
4540                 megasas_return_cmd(instance, cmd);
4541
4542         return ret;
4543 }
4544
4545 /*
4546  * megasas_get_ld_list_info -   Returns FW's ld_list structure
4547  * @instance:                           Adapter soft state
4548  * @ld_list:                            ld_list structure
4549  *
4550  * Issues an internal command (DCMD) to get the FW's controller PD
4551  * list structure.  This information is mainly used to find out SYSTEM
4552  * supported by the FW.
4553  */
4554 static int
4555 megasas_get_ld_list(struct megasas_instance *instance)
4556 {
4557         int ret = 0, ld_index = 0, ids = 0;
4558         struct megasas_cmd *cmd;
4559         struct megasas_dcmd_frame *dcmd;
4560         struct MR_LD_LIST *ci;
4561         dma_addr_t ci_h = 0;
4562         u32 ld_count;
4563
4564         ci = instance->ld_list_buf;
4565         ci_h = instance->ld_list_buf_h;
4566
4567         cmd = megasas_get_cmd(instance);
4568
4569         if (!cmd) {
4570                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_list: Failed to get cmd\n");
4571                 return -ENOMEM;
4572         }
4573
4574         dcmd = &cmd->frame->dcmd;
4575
4576         memset(ci, 0, sizeof(*ci));
4577         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4578
4579         if (instance->supportmax256vd)
4580                 dcmd->mbox.b[0] = 1;
4581         dcmd->cmd = MFI_CMD_DCMD;
4582         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4583         dcmd->sge_count = 1;
4584         dcmd->flags = MFI_FRAME_DIR_READ;
4585         dcmd->timeout = 0;
4586         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST));
4587         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST);
4588         dcmd->pad_0  = 0;
4589
4590         megasas_set_dma_settings(instance, dcmd, ci_h,
4591                                  sizeof(struct MR_LD_LIST));
4592
4593         if ((instance->adapter_type != MFI_SERIES) &&
4594             !instance->mask_interrupts)
4595                 ret = megasas_issue_blocked_cmd(instance, cmd,
4596                         MFI_IO_TIMEOUT_SECS);
4597         else
4598                 ret = megasas_issue_polled(instance, cmd);
4599
4600         ld_count = le32_to_cpu(ci->ldCount);
4601
4602         switch (ret) {
4603         case DCMD_FAILED:
4604                 megaraid_sas_kill_hba(instance);
4605                 break;
4606         case DCMD_TIMEOUT:
4607
4608                 switch (dcmd_timeout_ocr_possible(instance)) {
4609                 case INITIATE_OCR:
4610                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4611                         /*
4612                          * DCMD failed from AEN path.
4613                          * AEN path already hold reset_mutex to avoid PCI access
4614                          * while OCR is in progress.
4615                          */
4616                         mutex_unlock(&instance->reset_mutex);
4617                         megasas_reset_fusion(instance->host,
4618                                                 MFI_IO_TIMEOUT_OCR);
4619                         mutex_lock(&instance->reset_mutex);
4620                         break;
4621                 case KILL_ADAPTER:
4622                         megaraid_sas_kill_hba(instance);
4623                         break;
4624                 case IGNORE_TIMEOUT:
4625                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4626                                 __func__, __LINE__);
4627                         break;
4628                 }
4629
4630                 break;
4631
4632         case DCMD_SUCCESS:
4633                 if (megasas_dbg_lvl & LD_PD_DEBUG)
4634                         dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n",
4635                                  __func__, ld_count);
4636
4637                 if (ld_count > instance->fw_supported_vd_count)
4638                         break;
4639
4640                 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
4641
4642                 for (ld_index = 0; ld_index < ld_count; ld_index++) {
4643                         if (ci->ldList[ld_index].state != 0) {
4644                                 ids = ci->ldList[ld_index].ref.targetId;
4645                                 instance->ld_ids[ids] = ci->ldList[ld_index].ref.targetId;
4646                                 if (megasas_dbg_lvl & LD_PD_DEBUG)
4647                                         dev_info(&instance->pdev->dev,
4648                                                  "LD%d: targetID: 0x%03x\n",
4649                                                  ld_index, ids);
4650                         }
4651                 }
4652
4653                 break;
4654         }
4655
4656         if (ret != DCMD_TIMEOUT)
4657                 megasas_return_cmd(instance, cmd);
4658
4659         return ret;
4660 }
4661
4662 /**
4663  * megasas_ld_list_query -      Returns FW's ld_list structure
4664  * @instance:                           Adapter soft state
4665  * @ld_list:                            ld_list structure
4666  *
4667  * Issues an internal command (DCMD) to get the FW's controller PD
4668  * list structure.  This information is mainly used to find out SYSTEM
4669  * supported by the FW.
4670  */
4671 static int
4672 megasas_ld_list_query(struct megasas_instance *instance, u8 query_type)
4673 {
4674         int ret = 0, ld_index = 0, ids = 0;
4675         struct megasas_cmd *cmd;
4676         struct megasas_dcmd_frame *dcmd;
4677         struct MR_LD_TARGETID_LIST *ci;
4678         dma_addr_t ci_h = 0;
4679         u32 tgtid_count;
4680
4681         ci = instance->ld_targetid_list_buf;
4682         ci_h = instance->ld_targetid_list_buf_h;
4683
4684         cmd = megasas_get_cmd(instance);
4685
4686         if (!cmd) {
4687                 dev_warn(&instance->pdev->dev,
4688                          "megasas_ld_list_query: Failed to get cmd\n");
4689                 return -ENOMEM;
4690         }
4691
4692         dcmd = &cmd->frame->dcmd;
4693
4694         memset(ci, 0, sizeof(*ci));
4695         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4696
4697         dcmd->mbox.b[0] = query_type;
4698         if (instance->supportmax256vd)
4699                 dcmd->mbox.b[2] = 1;
4700
4701         dcmd->cmd = MFI_CMD_DCMD;
4702         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4703         dcmd->sge_count = 1;
4704         dcmd->flags = MFI_FRAME_DIR_READ;
4705         dcmd->timeout = 0;
4706         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
4707         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY);
4708         dcmd->pad_0  = 0;
4709
4710         megasas_set_dma_settings(instance, dcmd, ci_h,
4711                                  sizeof(struct MR_LD_TARGETID_LIST));
4712
4713         if ((instance->adapter_type != MFI_SERIES) &&
4714             !instance->mask_interrupts)
4715                 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4716         else
4717                 ret = megasas_issue_polled(instance, cmd);
4718
4719         switch (ret) {
4720         case DCMD_FAILED:
4721                 dev_info(&instance->pdev->dev,
4722                         "DCMD not supported by firmware - %s %d\n",
4723                                 __func__, __LINE__);
4724                 ret = megasas_get_ld_list(instance);
4725                 break;
4726         case DCMD_TIMEOUT:
4727                 switch (dcmd_timeout_ocr_possible(instance)) {
4728                 case INITIATE_OCR:
4729                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4730                         /*
4731                          * DCMD failed from AEN path.
4732                          * AEN path already hold reset_mutex to avoid PCI access
4733                          * while OCR is in progress.
4734                          */
4735                         mutex_unlock(&instance->reset_mutex);
4736                         megasas_reset_fusion(instance->host,
4737                                                 MFI_IO_TIMEOUT_OCR);
4738                         mutex_lock(&instance->reset_mutex);
4739                         break;
4740                 case KILL_ADAPTER:
4741                         megaraid_sas_kill_hba(instance);
4742                         break;
4743                 case IGNORE_TIMEOUT:
4744                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4745                                 __func__, __LINE__);
4746                         break;
4747                 }
4748
4749                 break;
4750         case DCMD_SUCCESS:
4751                 tgtid_count = le32_to_cpu(ci->count);
4752
4753                 if (megasas_dbg_lvl & LD_PD_DEBUG)
4754                         dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n",
4755                                  __func__, tgtid_count);
4756
4757                 if ((tgtid_count > (instance->fw_supported_vd_count)))
4758                         break;
4759
4760                 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
4761                 for (ld_index = 0; ld_index < tgtid_count; ld_index++) {
4762                         ids = ci->targetId[ld_index];
4763                         instance->ld_ids[ids] = ci->targetId[ld_index];
4764                         if (megasas_dbg_lvl & LD_PD_DEBUG)
4765                                 dev_info(&instance->pdev->dev, "LD%d: targetID: 0x%03x\n",
4766                                          ld_index, ci->targetId[ld_index]);
4767                 }
4768
4769                 break;
4770         }
4771
4772         if (ret != DCMD_TIMEOUT)
4773                 megasas_return_cmd(instance, cmd);
4774
4775         return ret;
4776 }
4777
4778 /**
4779  * dcmd.opcode            - MR_DCMD_CTRL_DEVICE_LIST_GET
4780  * dcmd.mbox              - reserved
4781  * dcmd.sge IN            - ptr to return MR_HOST_DEVICE_LIST structure
4782  * Desc:    This DCMD will return the combined device list
4783  * Status:  MFI_STAT_OK - List returned successfully
4784  *          MFI_STAT_INVALID_CMD - Firmware support for the feature has been
4785  *                                 disabled
4786  * @instance:                   Adapter soft state
4787  * @is_probe:                   Driver probe check
4788  * Return:                      0 if DCMD succeeded
4789  *                               non-zero if failed
4790  */
4791 static int
4792 megasas_host_device_list_query(struct megasas_instance *instance,
4793                                bool is_probe)
4794 {
4795         int ret, i, target_id;
4796         struct megasas_cmd *cmd;
4797         struct megasas_dcmd_frame *dcmd;
4798         struct MR_HOST_DEVICE_LIST *ci;
4799         u32 count;
4800         dma_addr_t ci_h;
4801
4802         ci = instance->host_device_list_buf;
4803         ci_h = instance->host_device_list_buf_h;
4804
4805         cmd = megasas_get_cmd(instance);
4806
4807         if (!cmd) {
4808                 dev_warn(&instance->pdev->dev,
4809                          "%s: failed to get cmd\n",
4810                          __func__);
4811                 return -ENOMEM;
4812         }
4813
4814         dcmd = &cmd->frame->dcmd;
4815
4816         memset(ci, 0, sizeof(*ci));
4817         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4818
4819         dcmd->mbox.b[0] = is_probe ? 0 : 1;
4820         dcmd->cmd = MFI_CMD_DCMD;
4821         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4822         dcmd->sge_count = 1;
4823         dcmd->flags = MFI_FRAME_DIR_READ;
4824         dcmd->timeout = 0;
4825         dcmd->pad_0 = 0;
4826         dcmd->data_xfer_len = cpu_to_le32(HOST_DEVICE_LIST_SZ);
4827         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_DEVICE_LIST_GET);
4828
4829         megasas_set_dma_settings(instance, dcmd, ci_h, HOST_DEVICE_LIST_SZ);
4830
4831         if (!instance->mask_interrupts) {
4832                 ret = megasas_issue_blocked_cmd(instance, cmd,
4833                                                 MFI_IO_TIMEOUT_SECS);
4834         } else {
4835                 ret = megasas_issue_polled(instance, cmd);
4836                 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4837         }
4838
4839         switch (ret) {
4840         case DCMD_SUCCESS:
4841                 /* Fill the internal pd_list and ld_ids array based on
4842                  * targetIds returned by FW
4843                  */
4844                 count = le32_to_cpu(ci->count);
4845
4846                 if (count > (MEGASAS_MAX_PD + MAX_LOGICAL_DRIVES_EXT))
4847                         break;
4848
4849                 if (megasas_dbg_lvl & LD_PD_DEBUG)
4850                         dev_info(&instance->pdev->dev, "%s, Device count: 0x%x\n",
4851                                  __func__, count);
4852
4853                 memset(instance->local_pd_list, 0,
4854                        MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
4855                 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
4856                 for (i = 0; i < count; i++) {
4857                         target_id = le16_to_cpu(ci->host_device_list[i].target_id);
4858                         if (ci->host_device_list[i].flags.u.bits.is_sys_pd) {
4859                                 instance->local_pd_list[target_id].tid = target_id;
4860                                 instance->local_pd_list[target_id].driveType =
4861                                                 ci->host_device_list[i].scsi_type;
4862                                 instance->local_pd_list[target_id].driveState =
4863                                                 MR_PD_STATE_SYSTEM;
4864                                 if (megasas_dbg_lvl & LD_PD_DEBUG)
4865                                         dev_info(&instance->pdev->dev,
4866                                                  "Device %d: PD targetID: 0x%03x deviceType:0x%x\n",
4867                                                  i, target_id, ci->host_device_list[i].scsi_type);
4868                         } else {
4869                                 instance->ld_ids[target_id] = target_id;
4870                                 if (megasas_dbg_lvl & LD_PD_DEBUG)
4871                                         dev_info(&instance->pdev->dev,
4872                                                  "Device %d: LD targetID: 0x%03x\n",
4873                                                  i, target_id);
4874                         }
4875                 }
4876
4877                 memcpy(instance->pd_list, instance->local_pd_list,
4878                        sizeof(instance->pd_list));
4879                 break;
4880
4881         case DCMD_TIMEOUT:
4882                 switch (dcmd_timeout_ocr_possible(instance)) {
4883                 case INITIATE_OCR:
4884                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4885                         mutex_unlock(&instance->reset_mutex);
4886                         megasas_reset_fusion(instance->host,
4887                                 MFI_IO_TIMEOUT_OCR);
4888                         mutex_lock(&instance->reset_mutex);
4889                         break;
4890                 case KILL_ADAPTER:
4891                         megaraid_sas_kill_hba(instance);
4892                         break;
4893                 case IGNORE_TIMEOUT:
4894                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4895                                  __func__, __LINE__);
4896                         break;
4897                 }
4898                 break;
4899         case DCMD_FAILED:
4900                 dev_err(&instance->pdev->dev,
4901                         "%s: MR_DCMD_CTRL_DEVICE_LIST_GET failed\n",
4902                         __func__);
4903                 break;
4904         }
4905
4906         if (ret != DCMD_TIMEOUT)
4907                 megasas_return_cmd(instance, cmd);
4908
4909         return ret;
4910 }
4911
4912 /*
4913  * megasas_update_ext_vd_details : Update details w.r.t Extended VD
4914  * instance                      : Controller's instance
4915 */
4916 static void megasas_update_ext_vd_details(struct megasas_instance *instance)
4917 {
4918         struct fusion_context *fusion;
4919         u32 ventura_map_sz = 0;
4920
4921         fusion = instance->ctrl_context;
4922         /* For MFI based controllers return dummy success */
4923         if (!fusion)
4924                 return;
4925
4926         instance->supportmax256vd =
4927                 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs;
4928         /* Below is additional check to address future FW enhancement */
4929         if (instance->ctrl_info_buf->max_lds > 64)
4930                 instance->supportmax256vd = 1;
4931
4932         instance->drv_supported_vd_count = MEGASAS_MAX_LD_CHANNELS
4933                                         * MEGASAS_MAX_DEV_PER_CHANNEL;
4934         instance->drv_supported_pd_count = MEGASAS_MAX_PD_CHANNELS
4935                                         * MEGASAS_MAX_DEV_PER_CHANNEL;
4936         if (instance->supportmax256vd) {
4937                 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES_EXT;
4938                 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
4939         } else {
4940                 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
4941                 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
4942         }
4943
4944         dev_info(&instance->pdev->dev,
4945                 "FW provided supportMaxExtLDs: %d\tmax_lds: %d\n",
4946                 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs ? 1 : 0,
4947                 instance->ctrl_info_buf->max_lds);
4948
4949         if (instance->max_raid_mapsize) {
4950                 ventura_map_sz = instance->max_raid_mapsize *
4951                                                 MR_MIN_MAP_SIZE; /* 64k */
4952                 fusion->current_map_sz = ventura_map_sz;
4953                 fusion->max_map_sz = ventura_map_sz;
4954         } else {
4955                 fusion->old_map_sz =  sizeof(struct MR_FW_RAID_MAP) +
4956                                         (sizeof(struct MR_LD_SPAN_MAP) *
4957                                         (instance->fw_supported_vd_count - 1));
4958                 fusion->new_map_sz =  sizeof(struct MR_FW_RAID_MAP_EXT);
4959
4960                 fusion->max_map_sz =
4961                         max(fusion->old_map_sz, fusion->new_map_sz);
4962
4963                 if (instance->supportmax256vd)
4964                         fusion->current_map_sz = fusion->new_map_sz;
4965                 else
4966                         fusion->current_map_sz = fusion->old_map_sz;
4967         }
4968         /* irrespective of FW raid maps, driver raid map is constant */
4969         fusion->drv_map_sz = sizeof(struct MR_DRV_RAID_MAP_ALL);
4970 }
4971
4972 /*
4973  * dcmd.opcode                - MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES
4974  * dcmd.hdr.length            - number of bytes to read
4975  * dcmd.sge                   - Ptr to MR_SNAPDUMP_PROPERTIES
4976  * Desc:                         Fill in snapdump properties
4977  * Status:                       MFI_STAT_OK- Command successful
4978  */
4979 void megasas_get_snapdump_properties(struct megasas_instance *instance)
4980 {
4981         int ret = 0;
4982         struct megasas_cmd *cmd;
4983         struct megasas_dcmd_frame *dcmd;
4984         struct MR_SNAPDUMP_PROPERTIES *ci;
4985         dma_addr_t ci_h = 0;
4986
4987         ci = instance->snapdump_prop;
4988         ci_h = instance->snapdump_prop_h;
4989
4990         if (!ci)
4991                 return;
4992
4993         cmd = megasas_get_cmd(instance);
4994
4995         if (!cmd) {
4996                 dev_dbg(&instance->pdev->dev, "Failed to get a free cmd\n");
4997                 return;
4998         }
4999
5000         dcmd = &cmd->frame->dcmd;
5001
5002         memset(ci, 0, sizeof(*ci));
5003         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5004
5005         dcmd->cmd = MFI_CMD_DCMD;
5006         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5007         dcmd->sge_count = 1;
5008         dcmd->flags = MFI_FRAME_DIR_READ;
5009         dcmd->timeout = 0;
5010         dcmd->pad_0 = 0;
5011         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_SNAPDUMP_PROPERTIES));
5012         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES);
5013
5014         megasas_set_dma_settings(instance, dcmd, ci_h,
5015                                  sizeof(struct MR_SNAPDUMP_PROPERTIES));
5016
5017         if (!instance->mask_interrupts) {
5018                 ret = megasas_issue_blocked_cmd(instance, cmd,
5019                                                 MFI_IO_TIMEOUT_SECS);
5020         } else {
5021                 ret = megasas_issue_polled(instance, cmd);
5022                 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5023         }
5024
5025         switch (ret) {
5026         case DCMD_SUCCESS:
5027                 instance->snapdump_wait_time =
5028                         min_t(u8, ci->trigger_min_num_sec_before_ocr,
5029                                 MEGASAS_MAX_SNAP_DUMP_WAIT_TIME);
5030                 break;
5031
5032         case DCMD_TIMEOUT:
5033                 switch (dcmd_timeout_ocr_possible(instance)) {
5034                 case INITIATE_OCR:
5035                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5036                         mutex_unlock(&instance->reset_mutex);
5037                         megasas_reset_fusion(instance->host,
5038                                 MFI_IO_TIMEOUT_OCR);
5039                         mutex_lock(&instance->reset_mutex);
5040                         break;
5041                 case KILL_ADAPTER:
5042                         megaraid_sas_kill_hba(instance);
5043                         break;
5044                 case IGNORE_TIMEOUT:
5045                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5046                                 __func__, __LINE__);
5047                         break;
5048                 }
5049         }
5050
5051         if (ret != DCMD_TIMEOUT)
5052                 megasas_return_cmd(instance, cmd);
5053 }
5054
5055 /**
5056  * megasas_get_controller_info -        Returns FW's controller structure
5057  * @instance:                           Adapter soft state
5058  *
5059  * Issues an internal command (DCMD) to get the FW's controller structure.
5060  * This information is mainly used to find out the maximum IO transfer per
5061  * command supported by the FW.
5062  */
5063 int
5064 megasas_get_ctrl_info(struct megasas_instance *instance)
5065 {
5066         int ret = 0;
5067         struct megasas_cmd *cmd;
5068         struct megasas_dcmd_frame *dcmd;
5069         struct megasas_ctrl_info *ci;
5070         dma_addr_t ci_h = 0;
5071
5072         ci = instance->ctrl_info_buf;
5073         ci_h = instance->ctrl_info_buf_h;
5074
5075         cmd = megasas_get_cmd(instance);
5076
5077         if (!cmd) {
5078                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a free cmd\n");
5079                 return -ENOMEM;
5080         }
5081
5082         dcmd = &cmd->frame->dcmd;
5083
5084         memset(ci, 0, sizeof(*ci));
5085         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5086
5087         dcmd->cmd = MFI_CMD_DCMD;
5088         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5089         dcmd->sge_count = 1;
5090         dcmd->flags = MFI_FRAME_DIR_READ;
5091         dcmd->timeout = 0;
5092         dcmd->pad_0 = 0;
5093         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info));
5094         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO);
5095         dcmd->mbox.b[0] = 1;
5096
5097         megasas_set_dma_settings(instance, dcmd, ci_h,
5098                                  sizeof(struct megasas_ctrl_info));
5099
5100         if ((instance->adapter_type != MFI_SERIES) &&
5101             !instance->mask_interrupts) {
5102                 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
5103         } else {
5104                 ret = megasas_issue_polled(instance, cmd);
5105                 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5106         }
5107
5108         switch (ret) {
5109         case DCMD_SUCCESS:
5110                 /* Save required controller information in
5111                  * CPU endianness format.
5112                  */
5113                 le32_to_cpus((u32 *)&ci->properties.OnOffProperties);
5114                 le16_to_cpus((u16 *)&ci->properties.on_off_properties2);
5115                 le32_to_cpus((u32 *)&ci->adapterOperations2);
5116                 le32_to_cpus((u32 *)&ci->adapterOperations3);
5117                 le16_to_cpus((u16 *)&ci->adapter_operations4);
5118                 le32_to_cpus((u32 *)&ci->adapter_operations5);
5119
5120                 /* Update the latest Ext VD info.
5121                  * From Init path, store current firmware details.
5122                  * From OCR path, detect any firmware properties changes.
5123                  * in case of Firmware upgrade without system reboot.
5124                  */
5125                 megasas_update_ext_vd_details(instance);
5126                 instance->support_seqnum_jbod_fp =
5127                         ci->adapterOperations3.useSeqNumJbodFP;
5128                 instance->support_morethan256jbod =
5129                         ci->adapter_operations4.support_pd_map_target_id;
5130                 instance->support_nvme_passthru =
5131                         ci->adapter_operations4.support_nvme_passthru;
5132                 instance->support_pci_lane_margining =
5133                         ci->adapter_operations5.support_pci_lane_margining;
5134                 instance->task_abort_tmo = ci->TaskAbortTO;
5135                 instance->max_reset_tmo = ci->MaxResetTO;
5136
5137                 /*Check whether controller is iMR or MR */
5138                 instance->is_imr = (ci->memory_size ? 0 : 1);
5139
5140                 instance->snapdump_wait_time =
5141                         (ci->properties.on_off_properties2.enable_snap_dump ?
5142                          MEGASAS_DEFAULT_SNAP_DUMP_WAIT_TIME : 0);
5143
5144                 instance->enable_fw_dev_list =
5145                         ci->properties.on_off_properties2.enable_fw_dev_list;
5146
5147                 dev_info(&instance->pdev->dev,
5148                         "controller type\t: %s(%dMB)\n",
5149                         instance->is_imr ? "iMR" : "MR",
5150                         le16_to_cpu(ci->memory_size));
5151
5152                 instance->disableOnlineCtrlReset =
5153                         ci->properties.OnOffProperties.disableOnlineCtrlReset;
5154                 instance->secure_jbod_support =
5155                         ci->adapterOperations3.supportSecurityonJBOD;
5156                 dev_info(&instance->pdev->dev, "Online Controller Reset(OCR)\t: %s\n",
5157                         instance->disableOnlineCtrlReset ? "Disabled" : "Enabled");
5158                 dev_info(&instance->pdev->dev, "Secure JBOD support\t: %s\n",
5159                         instance->secure_jbod_support ? "Yes" : "No");
5160                 dev_info(&instance->pdev->dev, "NVMe passthru support\t: %s\n",
5161                          instance->support_nvme_passthru ? "Yes" : "No");
5162                 dev_info(&instance->pdev->dev,
5163                          "FW provided TM TaskAbort/Reset timeout\t: %d secs/%d secs\n",
5164                          instance->task_abort_tmo, instance->max_reset_tmo);
5165                 dev_info(&instance->pdev->dev, "JBOD sequence map support\t: %s\n",
5166                          instance->support_seqnum_jbod_fp ? "Yes" : "No");
5167                 dev_info(&instance->pdev->dev, "PCI Lane Margining support\t: %s\n",
5168                          instance->support_pci_lane_margining ? "Yes" : "No");
5169
5170                 break;
5171
5172         case DCMD_TIMEOUT:
5173                 switch (dcmd_timeout_ocr_possible(instance)) {
5174                 case INITIATE_OCR:
5175                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5176                         mutex_unlock(&instance->reset_mutex);
5177                         megasas_reset_fusion(instance->host,
5178                                 MFI_IO_TIMEOUT_OCR);
5179                         mutex_lock(&instance->reset_mutex);
5180                         break;
5181                 case KILL_ADAPTER:
5182                         megaraid_sas_kill_hba(instance);
5183                         break;
5184                 case IGNORE_TIMEOUT:
5185                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5186                                 __func__, __LINE__);
5187                         break;
5188                 }
5189                 break;
5190         case DCMD_FAILED:
5191                 megaraid_sas_kill_hba(instance);
5192                 break;
5193
5194         }
5195
5196         if (ret != DCMD_TIMEOUT)
5197                 megasas_return_cmd(instance, cmd);
5198
5199         return ret;
5200 }
5201
5202 /*
5203  * megasas_set_crash_dump_params -      Sends address of crash dump DMA buffer
5204  *                                      to firmware
5205  *
5206  * @instance:                           Adapter soft state
5207  * @crash_buf_state             -       tell FW to turn ON/OFF crash dump feature
5208                                         MR_CRASH_BUF_TURN_OFF = 0
5209                                         MR_CRASH_BUF_TURN_ON = 1
5210  * @return 0 on success non-zero on failure.
5211  * Issues an internal command (DCMD) to set parameters for crash dump feature.
5212  * Driver will send address of crash dump DMA buffer and set mbox to tell FW
5213  * that driver supports crash dump feature. This DCMD will be sent only if
5214  * crash dump feature is supported by the FW.
5215  *
5216  */
5217 int megasas_set_crash_dump_params(struct megasas_instance *instance,
5218         u8 crash_buf_state)
5219 {
5220         int ret = 0;
5221         struct megasas_cmd *cmd;
5222         struct megasas_dcmd_frame *dcmd;
5223
5224         cmd = megasas_get_cmd(instance);
5225
5226         if (!cmd) {
5227                 dev_err(&instance->pdev->dev, "Failed to get a free cmd\n");
5228                 return -ENOMEM;
5229         }
5230
5231
5232         dcmd = &cmd->frame->dcmd;
5233
5234         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5235         dcmd->mbox.b[0] = crash_buf_state;
5236         dcmd->cmd = MFI_CMD_DCMD;
5237         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5238         dcmd->sge_count = 1;
5239         dcmd->flags = MFI_FRAME_DIR_NONE;
5240         dcmd->timeout = 0;
5241         dcmd->pad_0 = 0;
5242         dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE);
5243         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS);
5244
5245         megasas_set_dma_settings(instance, dcmd, instance->crash_dump_h,
5246                                  CRASH_DMA_BUF_SIZE);
5247
5248         if ((instance->adapter_type != MFI_SERIES) &&
5249             !instance->mask_interrupts)
5250                 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
5251         else
5252                 ret = megasas_issue_polled(instance, cmd);
5253
5254         if (ret == DCMD_TIMEOUT) {
5255                 switch (dcmd_timeout_ocr_possible(instance)) {
5256                 case INITIATE_OCR:
5257                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5258                         megasas_reset_fusion(instance->host,
5259                                         MFI_IO_TIMEOUT_OCR);
5260                         break;
5261                 case KILL_ADAPTER:
5262                         megaraid_sas_kill_hba(instance);
5263                         break;
5264                 case IGNORE_TIMEOUT:
5265                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5266                                 __func__, __LINE__);
5267                         break;
5268                 }
5269         } else
5270                 megasas_return_cmd(instance, cmd);
5271
5272         return ret;
5273 }
5274
5275 /**
5276  * megasas_issue_init_mfi -     Initializes the FW
5277  * @instance:           Adapter soft state
5278  *
5279  * Issues the INIT MFI cmd
5280  */
5281 static int
5282 megasas_issue_init_mfi(struct megasas_instance *instance)
5283 {
5284         __le32 context;
5285         struct megasas_cmd *cmd;
5286         struct megasas_init_frame *init_frame;
5287         struct megasas_init_queue_info *initq_info;
5288         dma_addr_t init_frame_h;
5289         dma_addr_t initq_info_h;
5290
5291         /*
5292          * Prepare a init frame. Note the init frame points to queue info
5293          * structure. Each frame has SGL allocated after first 64 bytes. For
5294          * this frame - since we don't need any SGL - we use SGL's space as
5295          * queue info structure
5296          *
5297          * We will not get a NULL command below. We just created the pool.
5298          */
5299         cmd = megasas_get_cmd(instance);
5300
5301         init_frame = (struct megasas_init_frame *)cmd->frame;
5302         initq_info = (struct megasas_init_queue_info *)
5303                 ((unsigned long)init_frame + 64);
5304
5305         init_frame_h = cmd->frame_phys_addr;
5306         initq_info_h = init_frame_h + 64;
5307
5308         context = init_frame->context;
5309         memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
5310         memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
5311         init_frame->context = context;
5312
5313         initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1);
5314         initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h);
5315
5316         initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h);
5317         initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h);
5318
5319         init_frame->cmd = MFI_CMD_INIT;
5320         init_frame->cmd_status = MFI_STAT_INVALID_STATUS;
5321         init_frame->queue_info_new_phys_addr_lo =
5322                 cpu_to_le32(lower_32_bits(initq_info_h));
5323         init_frame->queue_info_new_phys_addr_hi =
5324                 cpu_to_le32(upper_32_bits(initq_info_h));
5325
5326         init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info));
5327
5328         /*
5329          * disable the intr before firing the init frame to FW
5330          */
5331         instance->instancet->disable_intr(instance);
5332
5333         /*
5334          * Issue the init frame in polled mode
5335          */
5336
5337         if (megasas_issue_polled(instance, cmd)) {
5338                 dev_err(&instance->pdev->dev, "Failed to init firmware\n");
5339                 megasas_return_cmd(instance, cmd);
5340                 goto fail_fw_init;
5341         }
5342
5343         megasas_return_cmd(instance, cmd);
5344
5345         return 0;
5346
5347 fail_fw_init:
5348         return -EINVAL;
5349 }
5350
5351 static u32
5352 megasas_init_adapter_mfi(struct megasas_instance *instance)
5353 {
5354         u32 context_sz;
5355         u32 reply_q_sz;
5356
5357         /*
5358          * Get various operational parameters from status register
5359          */
5360         instance->max_fw_cmds = instance->instancet->read_fw_status_reg(instance) & 0x00FFFF;
5361         /*
5362          * Reduce the max supported cmds by 1. This is to ensure that the
5363          * reply_q_sz (1 more than the max cmd that driver may send)
5364          * does not exceed max cmds that the FW can support
5365          */
5366         instance->max_fw_cmds = instance->max_fw_cmds-1;
5367         instance->max_mfi_cmds = instance->max_fw_cmds;
5368         instance->max_num_sge = (instance->instancet->read_fw_status_reg(instance) & 0xFF0000) >>
5369                                         0x10;
5370         /*
5371          * For MFI skinny adapters, MEGASAS_SKINNY_INT_CMDS commands
5372          * are reserved for IOCTL + driver's internal DCMDs.
5373          */
5374         if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
5375                 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
5376                 instance->max_scsi_cmds = (instance->max_fw_cmds -
5377                         MEGASAS_SKINNY_INT_CMDS);
5378                 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
5379         } else {
5380                 instance->max_scsi_cmds = (instance->max_fw_cmds -
5381                         MEGASAS_INT_CMDS);
5382                 sema_init(&instance->ioctl_sem, (MEGASAS_MFI_IOCTL_CMDS));
5383         }
5384
5385         instance->cur_can_queue = instance->max_scsi_cmds;
5386         /*
5387          * Create a pool of commands
5388          */
5389         if (megasas_alloc_cmds(instance))
5390                 goto fail_alloc_cmds;
5391
5392         /*
5393          * Allocate memory for reply queue. Length of reply queue should
5394          * be _one_ more than the maximum commands handled by the firmware.
5395          *
5396          * Note: When FW completes commands, it places corresponding contex
5397          * values in this circular reply queue. This circular queue is a fairly
5398          * typical producer-consumer queue. FW is the producer (of completed
5399          * commands) and the driver is the consumer.
5400          */
5401         context_sz = sizeof(u32);
5402         reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
5403
5404         instance->reply_queue = dma_alloc_coherent(&instance->pdev->dev,
5405                         reply_q_sz, &instance->reply_queue_h, GFP_KERNEL);
5406
5407         if (!instance->reply_queue) {
5408                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Out of DMA mem for reply queue\n");
5409                 goto fail_reply_queue;
5410         }
5411
5412         if (megasas_issue_init_mfi(instance))
5413                 goto fail_fw_init;
5414
5415         if (megasas_get_ctrl_info(instance)) {
5416                 dev_err(&instance->pdev->dev, "(%d): Could get controller info "
5417                         "Fail from %s %d\n", instance->unique_id,
5418                         __func__, __LINE__);
5419                 goto fail_fw_init;
5420         }
5421
5422         instance->fw_support_ieee = 0;
5423         instance->fw_support_ieee =
5424                 (instance->instancet->read_fw_status_reg(instance) &
5425                 0x04000000);
5426
5427         dev_notice(&instance->pdev->dev, "megasas_init_mfi: fw_support_ieee=%d",
5428                         instance->fw_support_ieee);
5429
5430         if (instance->fw_support_ieee)
5431                 instance->flag_ieee = 1;
5432
5433         return 0;
5434
5435 fail_fw_init:
5436
5437         dma_free_coherent(&instance->pdev->dev, reply_q_sz,
5438                             instance->reply_queue, instance->reply_queue_h);
5439 fail_reply_queue:
5440         megasas_free_cmds(instance);
5441
5442 fail_alloc_cmds:
5443         return 1;
5444 }
5445
5446 static
5447 void megasas_setup_irq_poll(struct megasas_instance *instance)
5448 {
5449         struct megasas_irq_context *irq_ctx;
5450         u32 count, i;
5451
5452         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
5453
5454         /* Initialize IRQ poll */
5455         for (i = 0; i < count; i++) {
5456                 irq_ctx = &instance->irq_context[i];
5457                 irq_ctx->os_irq = pci_irq_vector(instance->pdev, i);
5458                 irq_ctx->irq_poll_scheduled = false;
5459                 irq_poll_init(&irq_ctx->irqpoll,
5460                               instance->threshold_reply_count,
5461                               megasas_irqpoll);
5462         }
5463 }
5464
5465 /*
5466  * megasas_setup_irqs_ioapic -          register legacy interrupts.
5467  * @instance:                           Adapter soft state
5468  *
5469  * Do not enable interrupt, only setup ISRs.
5470  *
5471  * Return 0 on success.
5472  */
5473 static int
5474 megasas_setup_irqs_ioapic(struct megasas_instance *instance)
5475 {
5476         struct pci_dev *pdev;
5477
5478         pdev = instance->pdev;
5479         instance->irq_context[0].instance = instance;
5480         instance->irq_context[0].MSIxIndex = 0;
5481         if (request_irq(pci_irq_vector(pdev, 0),
5482                         instance->instancet->service_isr, IRQF_SHARED,
5483                         "megasas", &instance->irq_context[0])) {
5484                 dev_err(&instance->pdev->dev,
5485                                 "Failed to register IRQ from %s %d\n",
5486                                 __func__, __LINE__);
5487                 return -1;
5488         }
5489         instance->perf_mode = MR_LATENCY_PERF_MODE;
5490         instance->low_latency_index_start = 0;
5491         return 0;
5492 }
5493
5494 /**
5495  * megasas_setup_irqs_msix -            register MSI-x interrupts.
5496  * @instance:                           Adapter soft state
5497  * @is_probe:                           Driver probe check
5498  *
5499  * Do not enable interrupt, only setup ISRs.
5500  *
5501  * Return 0 on success.
5502  */
5503 static int
5504 megasas_setup_irqs_msix(struct megasas_instance *instance, u8 is_probe)
5505 {
5506         int i, j;
5507         struct pci_dev *pdev;
5508
5509         pdev = instance->pdev;
5510
5511         /* Try MSI-x */
5512         for (i = 0; i < instance->msix_vectors; i++) {
5513                 instance->irq_context[i].instance = instance;
5514                 instance->irq_context[i].MSIxIndex = i;
5515                 if (request_irq(pci_irq_vector(pdev, i),
5516                         instance->instancet->service_isr, 0, "megasas",
5517                         &instance->irq_context[i])) {
5518                         dev_err(&instance->pdev->dev,
5519                                 "Failed to register IRQ for vector %d.\n", i);
5520                         for (j = 0; j < i; j++)
5521                                 free_irq(pci_irq_vector(pdev, j),
5522                                          &instance->irq_context[j]);
5523                         /* Retry irq register for IO_APIC*/
5524                         instance->msix_vectors = 0;
5525                         instance->msix_load_balance = false;
5526                         if (is_probe) {
5527                                 pci_free_irq_vectors(instance->pdev);
5528                                 return megasas_setup_irqs_ioapic(instance);
5529                         } else {
5530                                 return -1;
5531                         }
5532                 }
5533         }
5534
5535         return 0;
5536 }
5537
5538 /*
5539  * megasas_destroy_irqs-                unregister interrupts.
5540  * @instance:                           Adapter soft state
5541  * return:                              void
5542  */
5543 static void
5544 megasas_destroy_irqs(struct megasas_instance *instance) {
5545
5546         int i;
5547         int count;
5548         struct megasas_irq_context *irq_ctx;
5549
5550         count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
5551         if (instance->adapter_type != MFI_SERIES) {
5552                 for (i = 0; i < count; i++) {
5553                         irq_ctx = &instance->irq_context[i];
5554                         irq_poll_disable(&irq_ctx->irqpoll);
5555                 }
5556         }
5557
5558         if (instance->msix_vectors)
5559                 for (i = 0; i < instance->msix_vectors; i++) {
5560                         free_irq(pci_irq_vector(instance->pdev, i),
5561                                  &instance->irq_context[i]);
5562                 }
5563         else
5564                 free_irq(pci_irq_vector(instance->pdev, 0),
5565                          &instance->irq_context[0]);
5566 }
5567
5568 /**
5569  * megasas_setup_jbod_map -     setup jbod map for FP seq_number.
5570  * @instance:                           Adapter soft state
5571  * @is_probe:                           Driver probe check
5572  *
5573  * Return 0 on success.
5574  */
5575 void
5576 megasas_setup_jbod_map(struct megasas_instance *instance)
5577 {
5578         int i;
5579         struct fusion_context *fusion = instance->ctrl_context;
5580         u32 pd_seq_map_sz;
5581
5582         pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
5583                 (sizeof(struct MR_PD_CFG_SEQ) * (MAX_PHYSICAL_DEVICES - 1));
5584
5585         instance->use_seqnum_jbod_fp =
5586                 instance->support_seqnum_jbod_fp;
5587         if (reset_devices || !fusion ||
5588                 !instance->support_seqnum_jbod_fp) {
5589                 dev_info(&instance->pdev->dev,
5590                         "JBOD sequence map is disabled %s %d\n",
5591                         __func__, __LINE__);
5592                 instance->use_seqnum_jbod_fp = false;
5593                 return;
5594         }
5595
5596         if (fusion->pd_seq_sync[0])
5597                 goto skip_alloc;
5598
5599         for (i = 0; i < JBOD_MAPS_COUNT; i++) {
5600                 fusion->pd_seq_sync[i] = dma_alloc_coherent
5601                         (&instance->pdev->dev, pd_seq_map_sz,
5602                         &fusion->pd_seq_phys[i], GFP_KERNEL);
5603                 if (!fusion->pd_seq_sync[i]) {
5604                         dev_err(&instance->pdev->dev,
5605                                 "Failed to allocate memory from %s %d\n",
5606                                 __func__, __LINE__);
5607                         if (i == 1) {
5608                                 dma_free_coherent(&instance->pdev->dev,
5609                                         pd_seq_map_sz, fusion->pd_seq_sync[0],
5610                                         fusion->pd_seq_phys[0]);
5611                                 fusion->pd_seq_sync[0] = NULL;
5612                         }
5613                         instance->use_seqnum_jbod_fp = false;
5614                         return;
5615                 }
5616         }
5617
5618 skip_alloc:
5619         if (!megasas_sync_pd_seq_num(instance, false) &&
5620                 !megasas_sync_pd_seq_num(instance, true))
5621                 instance->use_seqnum_jbod_fp = true;
5622         else
5623                 instance->use_seqnum_jbod_fp = false;
5624 }
5625
5626 static void megasas_setup_reply_map(struct megasas_instance *instance)
5627 {
5628         const struct cpumask *mask;
5629         unsigned int queue, cpu, low_latency_index_start;
5630
5631         low_latency_index_start = instance->low_latency_index_start;
5632
5633         for (queue = low_latency_index_start; queue < instance->msix_vectors; queue++) {
5634                 mask = pci_irq_get_affinity(instance->pdev, queue);
5635                 if (!mask)
5636                         goto fallback;
5637
5638                 for_each_cpu(cpu, mask)
5639                         instance->reply_map[cpu] = queue;
5640         }
5641         return;
5642
5643 fallback:
5644         queue = low_latency_index_start;
5645         for_each_possible_cpu(cpu) {
5646                 instance->reply_map[cpu] = queue;
5647                 if (queue == (instance->msix_vectors - 1))
5648                         queue = low_latency_index_start;
5649                 else
5650                         queue++;
5651         }
5652 }
5653
5654 /**
5655  * megasas_get_device_list -    Get the PD and LD device list from FW.
5656  * @instance:                   Adapter soft state
5657  * @return:                     Success or failure
5658  *
5659  * Issue DCMDs to Firmware to get the PD and LD list.
5660  * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination
5661  * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list.
5662  */
5663 static
5664 int megasas_get_device_list(struct megasas_instance *instance)
5665 {
5666         memset(instance->pd_list, 0,
5667                (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)));
5668         memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
5669
5670         if (instance->enable_fw_dev_list) {
5671                 if (megasas_host_device_list_query(instance, true))
5672                         return FAILED;
5673         } else {
5674                 if (megasas_get_pd_list(instance) < 0) {
5675                         dev_err(&instance->pdev->dev, "failed to get PD list\n");
5676                         return FAILED;
5677                 }
5678
5679                 if (megasas_ld_list_query(instance,
5680                                           MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) {
5681                         dev_err(&instance->pdev->dev, "failed to get LD list\n");
5682                         return FAILED;
5683                 }
5684         }
5685
5686         return SUCCESS;
5687 }
5688
5689 /**
5690  * megasas_set_high_iops_queue_affinity_hint -  Set affinity hint for high IOPS queues
5691  * @instance:                                   Adapter soft state
5692  * return:                                      void
5693  */
5694 static inline void
5695 megasas_set_high_iops_queue_affinity_hint(struct megasas_instance *instance)
5696 {
5697         int i;
5698         int local_numa_node;
5699
5700         if (instance->perf_mode == MR_BALANCED_PERF_MODE) {
5701                 local_numa_node = dev_to_node(&instance->pdev->dev);
5702
5703                 for (i = 0; i < instance->low_latency_index_start; i++)
5704                         irq_set_affinity_hint(pci_irq_vector(instance->pdev, i),
5705                                 cpumask_of_node(local_numa_node));
5706         }
5707 }
5708
5709 static int
5710 __megasas_alloc_irq_vectors(struct megasas_instance *instance)
5711 {
5712         int i, irq_flags;
5713         struct irq_affinity desc = { .pre_vectors = instance->low_latency_index_start };
5714         struct irq_affinity *descp = &desc;
5715
5716         irq_flags = PCI_IRQ_MSIX;
5717
5718         if (instance->smp_affinity_enable)
5719                 irq_flags |= PCI_IRQ_AFFINITY;
5720         else
5721                 descp = NULL;
5722
5723         i = pci_alloc_irq_vectors_affinity(instance->pdev,
5724                 instance->low_latency_index_start,
5725                 instance->msix_vectors, irq_flags, descp);
5726
5727         return i;
5728 }
5729
5730 /**
5731  * megasas_alloc_irq_vectors -  Allocate IRQ vectors/enable MSI-x vectors
5732  * @instance:                   Adapter soft state
5733  * return:                      void
5734  */
5735 static void
5736 megasas_alloc_irq_vectors(struct megasas_instance *instance)
5737 {
5738         int i;
5739         unsigned int num_msix_req;
5740
5741         i = __megasas_alloc_irq_vectors(instance);
5742
5743         if ((instance->perf_mode == MR_BALANCED_PERF_MODE) &&
5744             (i != instance->msix_vectors)) {
5745                 if (instance->msix_vectors)
5746                         pci_free_irq_vectors(instance->pdev);
5747                 /* Disable Balanced IOPS mode and try realloc vectors */
5748                 instance->perf_mode = MR_LATENCY_PERF_MODE;
5749                 instance->low_latency_index_start = 1;
5750                 num_msix_req = num_online_cpus() + instance->low_latency_index_start;
5751
5752                 instance->msix_vectors = min(num_msix_req,
5753                                 instance->msix_vectors);
5754
5755                 i = __megasas_alloc_irq_vectors(instance);
5756
5757         }
5758
5759         dev_info(&instance->pdev->dev,
5760                 "requested/available msix %d/%d\n", instance->msix_vectors, i);
5761
5762         if (i > 0)
5763                 instance->msix_vectors = i;
5764         else
5765                 instance->msix_vectors = 0;
5766
5767         if (instance->smp_affinity_enable)
5768                 megasas_set_high_iops_queue_affinity_hint(instance);
5769 }
5770
5771 /**
5772  * megasas_init_fw -    Initializes the FW
5773  * @instance:           Adapter soft state
5774  *
5775  * This is the main function for initializing firmware
5776  */
5777
5778 static int megasas_init_fw(struct megasas_instance *instance)
5779 {
5780         u32 max_sectors_1;
5781         u32 max_sectors_2, tmp_sectors, msix_enable;
5782         u32 scratch_pad_1, scratch_pad_2, scratch_pad_3, status_reg;
5783         resource_size_t base_addr;
5784         void *base_addr_phys;
5785         struct megasas_ctrl_info *ctrl_info = NULL;
5786         unsigned long bar_list;
5787         int i, j, loop;
5788         struct IOV_111 *iovPtr;
5789         struct fusion_context *fusion;
5790         bool intr_coalescing;
5791         unsigned int num_msix_req;
5792         u16 lnksta, speed;
5793
5794         fusion = instance->ctrl_context;
5795
5796         /* Find first memory bar */
5797         bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
5798         instance->bar = find_first_bit(&bar_list, BITS_PER_LONG);
5799         if (pci_request_selected_regions(instance->pdev, 1<<instance->bar,
5800                                          "megasas: LSI")) {
5801                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "IO memory region busy!\n");
5802                 return -EBUSY;
5803         }
5804
5805         base_addr = pci_resource_start(instance->pdev, instance->bar);
5806         instance->reg_set = ioremap_nocache(base_addr, 8192);
5807
5808         if (!instance->reg_set) {
5809                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to map IO mem\n");
5810                 goto fail_ioremap;
5811         }
5812
5813         base_addr_phys = &base_addr;
5814         dev_printk(KERN_DEBUG, &instance->pdev->dev,
5815                    "BAR:0x%lx  BAR's base_addr(phys):%pa  mapped virt_addr:0x%p\n",
5816                    instance->bar, base_addr_phys, instance->reg_set);
5817
5818         if (instance->adapter_type != MFI_SERIES)
5819                 instance->instancet = &megasas_instance_template_fusion;
5820         else {
5821                 switch (instance->pdev->device) {
5822                 case PCI_DEVICE_ID_LSI_SAS1078R:
5823                 case PCI_DEVICE_ID_LSI_SAS1078DE:
5824                         instance->instancet = &megasas_instance_template_ppc;
5825                         break;
5826                 case PCI_DEVICE_ID_LSI_SAS1078GEN2:
5827                 case PCI_DEVICE_ID_LSI_SAS0079GEN2:
5828                         instance->instancet = &megasas_instance_template_gen2;
5829                         break;
5830                 case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
5831                 case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
5832                         instance->instancet = &megasas_instance_template_skinny;
5833                         break;
5834                 case PCI_DEVICE_ID_LSI_SAS1064R:
5835                 case PCI_DEVICE_ID_DELL_PERC5:
5836                 default:
5837                         instance->instancet = &megasas_instance_template_xscale;
5838                         instance->pd_list_not_supported = 1;
5839                         break;
5840                 }
5841         }
5842
5843         if (megasas_transition_to_ready(instance, 0)) {
5844                 dev_info(&instance->pdev->dev,
5845                          "Failed to transition controller to ready from %s!\n",
5846                          __func__);
5847                 if (instance->adapter_type != MFI_SERIES) {
5848                         status_reg = instance->instancet->read_fw_status_reg(
5849                                         instance);
5850                         if (status_reg & MFI_RESET_ADAPTER) {
5851                                 if (megasas_adp_reset_wait_for_ready
5852                                         (instance, true, 0) == FAILED)
5853                                         goto fail_ready_state;
5854                         } else {
5855                                 goto fail_ready_state;
5856                         }
5857                 } else {
5858                         atomic_set(&instance->fw_reset_no_pci_access, 1);
5859                         instance->instancet->adp_reset
5860                                 (instance, instance->reg_set);
5861                         atomic_set(&instance->fw_reset_no_pci_access, 0);
5862
5863                         /*waiting for about 30 second before retry*/
5864                         ssleep(30);
5865
5866                         if (megasas_transition_to_ready(instance, 0))
5867                                 goto fail_ready_state;
5868                 }
5869
5870                 dev_info(&instance->pdev->dev,
5871                          "FW restarted successfully from %s!\n",
5872                          __func__);
5873         }
5874
5875         megasas_init_ctrl_params(instance);
5876
5877         if (megasas_set_dma_mask(instance))
5878                 goto fail_ready_state;
5879
5880         if (megasas_alloc_ctrl_mem(instance))
5881                 goto fail_alloc_dma_buf;
5882
5883         if (megasas_alloc_ctrl_dma_buffers(instance))
5884                 goto fail_alloc_dma_buf;
5885
5886         fusion = instance->ctrl_context;
5887
5888         if (instance->adapter_type >= VENTURA_SERIES) {
5889                 scratch_pad_2 =
5890                         megasas_readl(instance,
5891                                       &instance->reg_set->outbound_scratch_pad_2);
5892                 instance->max_raid_mapsize = ((scratch_pad_2 >>
5893                         MR_MAX_RAID_MAP_SIZE_OFFSET_SHIFT) &
5894                         MR_MAX_RAID_MAP_SIZE_MASK);
5895         }
5896
5897         switch (instance->adapter_type) {
5898         case VENTURA_SERIES:
5899                 fusion->pcie_bw_limitation = true;
5900                 break;
5901         case AERO_SERIES:
5902                 fusion->r56_div_offload = true;
5903                 break;
5904         default:
5905                 break;
5906         }
5907
5908         /* Check if MSI-X is supported while in ready state */
5909         msix_enable = (instance->instancet->read_fw_status_reg(instance) &
5910                        0x4000000) >> 0x1a;
5911         if (msix_enable && !msix_disable) {
5912
5913                 scratch_pad_1 = megasas_readl
5914                         (instance, &instance->reg_set->outbound_scratch_pad_1);
5915                 /* Check max MSI-X vectors */
5916                 if (fusion) {
5917                         if (instance->adapter_type == THUNDERBOLT_SERIES) {
5918                                 /* Thunderbolt Series*/
5919                                 instance->msix_vectors = (scratch_pad_1
5920                                         & MR_MAX_REPLY_QUEUES_OFFSET) + 1;
5921                         } else {
5922                                 instance->msix_vectors = ((scratch_pad_1
5923                                         & MR_MAX_REPLY_QUEUES_EXT_OFFSET)
5924                                         >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1;
5925
5926                                 /*
5927                                  * For Invader series, > 8 MSI-x vectors
5928                                  * supported by FW/HW implies combined
5929                                  * reply queue mode is enabled.
5930                                  * For Ventura series, > 16 MSI-x vectors
5931                                  * supported by FW/HW implies combined
5932                                  * reply queue mode is enabled.
5933                                  */
5934                                 switch (instance->adapter_type) {
5935                                 case INVADER_SERIES:
5936                                         if (instance->msix_vectors > 8)
5937                                                 instance->msix_combined = true;
5938                                         break;
5939                                 case AERO_SERIES:
5940                                 case VENTURA_SERIES:
5941                                         if (instance->msix_vectors > 16)
5942                                                 instance->msix_combined = true;
5943                                         break;
5944                                 }
5945
5946                                 if (rdpq_enable)
5947                                         instance->is_rdpq = (scratch_pad_1 & MR_RDPQ_MODE_OFFSET) ?
5948                                                                 1 : 0;
5949
5950                                 if (instance->adapter_type >= INVADER_SERIES &&
5951                                     !instance->msix_combined) {
5952                                         instance->msix_load_balance = true;
5953                                         instance->smp_affinity_enable = false;
5954                                 }
5955
5956                                 /* Save 1-15 reply post index address to local memory
5957                                  * Index 0 is already saved from reg offset
5958                                  * MPI2_REPLY_POST_HOST_INDEX_OFFSET
5959                                  */
5960                                 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) {
5961                                         instance->reply_post_host_index_addr[loop] =
5962                                                 (u32 __iomem *)
5963                                                 ((u8 __iomem *)instance->reg_set +
5964                                                 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET
5965                                                 + (loop * 0x10));
5966                                 }
5967                         }
5968
5969                         dev_info(&instance->pdev->dev,
5970                                  "firmware supports msix\t: (%d)",
5971                                  instance->msix_vectors);
5972                         if (msix_vectors)
5973                                 instance->msix_vectors = min(msix_vectors,
5974                                         instance->msix_vectors);
5975                 } else /* MFI adapters */
5976                         instance->msix_vectors = 1;
5977
5978
5979                 /*
5980                  * For Aero (if some conditions are met), driver will configure a
5981                  * few additional reply queues with interrupt coalescing enabled.
5982                  * These queues with interrupt coalescing enabled are called
5983                  * High IOPS queues and rest of reply queues (based on number of
5984                  * logical CPUs) are termed as Low latency queues.
5985                  *
5986                  * Total Number of reply queues = High IOPS queues + low latency queues
5987                  *
5988                  * For rest of fusion adapters, 1 additional reply queue will be
5989                  * reserved for management commands, rest of reply queues
5990                  * (based on number of logical CPUs) will be used for IOs and
5991                  * referenced as IO queues.
5992                  * Total Number of reply queues = 1 + IO queues
5993                  *
5994                  * MFI adapters supports single MSI-x so single reply queue
5995                  * will be used for IO and management commands.
5996                  */
5997
5998                 intr_coalescing = (scratch_pad_1 & MR_INTR_COALESCING_SUPPORT_OFFSET) ?
5999                                                                 true : false;
6000                 if (intr_coalescing &&
6001                         (num_online_cpus() >= MR_HIGH_IOPS_QUEUE_COUNT) &&
6002                         (instance->msix_vectors == MEGASAS_MAX_MSIX_QUEUES))
6003                         instance->perf_mode = MR_BALANCED_PERF_MODE;
6004                 else
6005                         instance->perf_mode = MR_LATENCY_PERF_MODE;
6006
6007
6008                 if (instance->adapter_type == AERO_SERIES) {
6009                         pcie_capability_read_word(instance->pdev, PCI_EXP_LNKSTA, &lnksta);
6010                         speed = lnksta & PCI_EXP_LNKSTA_CLS;
6011
6012                         /*
6013                          * For Aero, if PCIe link speed is <16 GT/s, then driver should operate
6014                          * in latency perf mode and enable R1 PCI bandwidth algorithm
6015                          */
6016                         if (speed < 0x4) {
6017                                 instance->perf_mode = MR_LATENCY_PERF_MODE;
6018                                 fusion->pcie_bw_limitation = true;
6019                         }
6020
6021                         /*
6022                          * Performance mode settings provided through module parameter-perf_mode will
6023                          * take affect only for:
6024                          * 1. Aero family of adapters.
6025                          * 2. When user sets module parameter- perf_mode in range of 0-2.
6026                          */
6027                         if ((perf_mode >= MR_BALANCED_PERF_MODE) &&
6028                                 (perf_mode <= MR_LATENCY_PERF_MODE))
6029                                 instance->perf_mode = perf_mode;
6030                         /*
6031                          * If intr coalescing is not supported by controller FW, then IOPS
6032                          * and Balanced modes are not feasible.
6033                          */
6034                         if (!intr_coalescing)
6035                                 instance->perf_mode = MR_LATENCY_PERF_MODE;
6036
6037                 }
6038
6039                 if (instance->perf_mode == MR_BALANCED_PERF_MODE)
6040                         instance->low_latency_index_start =
6041                                 MR_HIGH_IOPS_QUEUE_COUNT;
6042                 else
6043                         instance->low_latency_index_start = 1;
6044
6045                 num_msix_req = num_online_cpus() + instance->low_latency_index_start;
6046
6047                 instance->msix_vectors = min(num_msix_req,
6048                                 instance->msix_vectors);
6049
6050                 megasas_alloc_irq_vectors(instance);
6051                 if (!instance->msix_vectors)
6052                         instance->msix_load_balance = false;
6053         }
6054         /*
6055          * MSI-X host index 0 is common for all adapter.
6056          * It is used for all MPT based Adapters.
6057          */
6058         if (instance->msix_combined) {
6059                 instance->reply_post_host_index_addr[0] =
6060                                 (u32 *)((u8 *)instance->reg_set +
6061                                 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET);
6062         } else {
6063                 instance->reply_post_host_index_addr[0] =
6064                         (u32 *)((u8 *)instance->reg_set +
6065                         MPI2_REPLY_POST_HOST_INDEX_OFFSET);
6066         }
6067
6068         if (!instance->msix_vectors) {
6069                 i = pci_alloc_irq_vectors(instance->pdev, 1, 1, PCI_IRQ_LEGACY);
6070                 if (i < 0)
6071                         goto fail_init_adapter;
6072         }
6073
6074         megasas_setup_reply_map(instance);
6075
6076         dev_info(&instance->pdev->dev,
6077                 "current msix/online cpus\t: (%d/%d)\n",
6078                 instance->msix_vectors, (unsigned int)num_online_cpus());
6079         dev_info(&instance->pdev->dev,
6080                 "RDPQ mode\t: (%s)\n", instance->is_rdpq ? "enabled" : "disabled");
6081
6082         tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
6083                 (unsigned long)instance);
6084
6085         /*
6086          * Below are default value for legacy Firmware.
6087          * non-fusion based controllers
6088          */
6089         instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
6090         instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
6091         /* Get operational params, sge flags, send init cmd to controller */
6092         if (instance->instancet->init_adapter(instance))
6093                 goto fail_init_adapter;
6094
6095         if (instance->adapter_type >= VENTURA_SERIES) {
6096                 scratch_pad_3 =
6097                         megasas_readl(instance,
6098                                       &instance->reg_set->outbound_scratch_pad_3);
6099                 if ((scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK) >=
6100                         MR_DEFAULT_NVME_PAGE_SHIFT)
6101                         instance->nvme_page_size =
6102                                 (1 << (scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK));
6103
6104                 dev_info(&instance->pdev->dev,
6105                          "NVME page size\t: (%d)\n", instance->nvme_page_size);
6106         }
6107
6108         if (instance->msix_vectors ?
6109                 megasas_setup_irqs_msix(instance, 1) :
6110                 megasas_setup_irqs_ioapic(instance))
6111                 goto fail_init_adapter;
6112
6113         if (instance->adapter_type != MFI_SERIES)
6114                 megasas_setup_irq_poll(instance);
6115
6116         instance->instancet->enable_intr(instance);
6117
6118         dev_info(&instance->pdev->dev, "INIT adapter done\n");
6119
6120         megasas_setup_jbod_map(instance);
6121
6122         if (megasas_get_device_list(instance) != SUCCESS) {
6123                 dev_err(&instance->pdev->dev,
6124                         "%s: megasas_get_device_list failed\n",
6125                         __func__);
6126                 goto fail_get_ld_pd_list;
6127         }
6128
6129         /* stream detection initialization */
6130         if (instance->adapter_type >= VENTURA_SERIES) {
6131                 fusion->stream_detect_by_ld =
6132                         kcalloc(MAX_LOGICAL_DRIVES_EXT,
6133                                 sizeof(struct LD_STREAM_DETECT *),
6134                                 GFP_KERNEL);
6135                 if (!fusion->stream_detect_by_ld) {
6136                         dev_err(&instance->pdev->dev,
6137                                 "unable to allocate stream detection for pool of LDs\n");
6138                         goto fail_get_ld_pd_list;
6139                 }
6140                 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i) {
6141                         fusion->stream_detect_by_ld[i] =
6142                                 kzalloc(sizeof(struct LD_STREAM_DETECT),
6143                                 GFP_KERNEL);
6144                         if (!fusion->stream_detect_by_ld[i]) {
6145                                 dev_err(&instance->pdev->dev,
6146                                         "unable to allocate stream detect by LD\n ");
6147                                 for (j = 0; j < i; ++j)
6148                                         kfree(fusion->stream_detect_by_ld[j]);
6149                                 kfree(fusion->stream_detect_by_ld);
6150                                 fusion->stream_detect_by_ld = NULL;
6151                                 goto fail_get_ld_pd_list;
6152                         }
6153                         fusion->stream_detect_by_ld[i]->mru_bit_map
6154                                 = MR_STREAM_BITMAP;
6155                 }
6156         }
6157
6158         /*
6159          * Compute the max allowed sectors per IO: The controller info has two
6160          * limits on max sectors. Driver should use the minimum of these two.
6161          *
6162          * 1 << stripe_sz_ops.min = max sectors per strip
6163          *
6164          * Note that older firmwares ( < FW ver 30) didn't report information
6165          * to calculate max_sectors_1. So the number ended up as zero always.
6166          */
6167         tmp_sectors = 0;
6168         ctrl_info = instance->ctrl_info_buf;
6169
6170         max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
6171                 le16_to_cpu(ctrl_info->max_strips_per_io);
6172         max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size);
6173
6174         tmp_sectors = min_t(u32, max_sectors_1, max_sectors_2);
6175
6176         instance->peerIsPresent = ctrl_info->cluster.peerIsPresent;
6177         instance->passive = ctrl_info->cluster.passive;
6178         memcpy(instance->clusterId, ctrl_info->clusterId, sizeof(instance->clusterId));
6179         instance->UnevenSpanSupport =
6180                 ctrl_info->adapterOperations2.supportUnevenSpans;
6181         if (instance->UnevenSpanSupport) {
6182                 struct fusion_context *fusion = instance->ctrl_context;
6183                 if (MR_ValidateMapInfo(instance, instance->map_id))
6184                         fusion->fast_path_io = 1;
6185                 else
6186                         fusion->fast_path_io = 0;
6187
6188         }
6189         if (ctrl_info->host_interface.SRIOV) {
6190                 instance->requestorId = ctrl_info->iov.requestorId;
6191                 if (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) {
6192                         if (!ctrl_info->adapterOperations2.activePassive)
6193                             instance->PlasmaFW111 = 1;
6194
6195                         dev_info(&instance->pdev->dev, "SR-IOV: firmware type: %s\n",
6196                             instance->PlasmaFW111 ? "1.11" : "new");
6197
6198                         if (instance->PlasmaFW111) {
6199                             iovPtr = (struct IOV_111 *)
6200                                 ((unsigned char *)ctrl_info + IOV_111_OFFSET);
6201                             instance->requestorId = iovPtr->requestorId;
6202                         }
6203                 }
6204                 dev_info(&instance->pdev->dev, "SRIOV: VF requestorId %d\n",
6205                         instance->requestorId);
6206         }
6207
6208         instance->crash_dump_fw_support =
6209                 ctrl_info->adapterOperations3.supportCrashDump;
6210         instance->crash_dump_drv_support =
6211                 (instance->crash_dump_fw_support &&
6212                 instance->crash_dump_buf);
6213         if (instance->crash_dump_drv_support)
6214                 megasas_set_crash_dump_params(instance,
6215                         MR_CRASH_BUF_TURN_OFF);
6216
6217         else {
6218                 if (instance->crash_dump_buf)
6219                         dma_free_coherent(&instance->pdev->dev,
6220                                 CRASH_DMA_BUF_SIZE,
6221                                 instance->crash_dump_buf,
6222                                 instance->crash_dump_h);
6223                 instance->crash_dump_buf = NULL;
6224         }
6225
6226         if (instance->snapdump_wait_time) {
6227                 megasas_get_snapdump_properties(instance);
6228                 dev_info(&instance->pdev->dev, "Snap dump wait time\t: %d\n",
6229                          instance->snapdump_wait_time);
6230         }
6231
6232         dev_info(&instance->pdev->dev,
6233                 "pci id\t\t: (0x%04x)/(0x%04x)/(0x%04x)/(0x%04x)\n",
6234                 le16_to_cpu(ctrl_info->pci.vendor_id),
6235                 le16_to_cpu(ctrl_info->pci.device_id),
6236                 le16_to_cpu(ctrl_info->pci.sub_vendor_id),
6237                 le16_to_cpu(ctrl_info->pci.sub_device_id));
6238         dev_info(&instance->pdev->dev, "unevenspan support      : %s\n",
6239                 instance->UnevenSpanSupport ? "yes" : "no");
6240         dev_info(&instance->pdev->dev, "firmware crash dump     : %s\n",
6241                 instance->crash_dump_drv_support ? "yes" : "no");
6242         dev_info(&instance->pdev->dev, "JBOD sequence map       : %s\n",
6243                 instance->use_seqnum_jbod_fp ? "enabled" : "disabled");
6244
6245         instance->max_sectors_per_req = instance->max_num_sge *
6246                                                 SGE_BUFFER_SIZE / 512;
6247         if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
6248                 instance->max_sectors_per_req = tmp_sectors;
6249
6250         /* Check for valid throttlequeuedepth module parameter */
6251         if (throttlequeuedepth &&
6252                         throttlequeuedepth <= instance->max_scsi_cmds)
6253                 instance->throttlequeuedepth = throttlequeuedepth;
6254         else
6255                 instance->throttlequeuedepth =
6256                                 MEGASAS_THROTTLE_QUEUE_DEPTH;
6257
6258         if ((resetwaittime < 1) ||
6259             (resetwaittime > MEGASAS_RESET_WAIT_TIME))
6260                 resetwaittime = MEGASAS_RESET_WAIT_TIME;
6261
6262         if ((scmd_timeout < 10) || (scmd_timeout > MEGASAS_DEFAULT_CMD_TIMEOUT))
6263                 scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
6264
6265         /* Launch SR-IOV heartbeat timer */
6266         if (instance->requestorId) {
6267                 if (!megasas_sriov_start_heartbeat(instance, 1)) {
6268                         megasas_start_timer(instance);
6269                 } else {
6270                         instance->skip_heartbeat_timer_del = 1;
6271                         goto fail_get_ld_pd_list;
6272                 }
6273         }
6274
6275         /*
6276          * Create and start watchdog thread which will monitor
6277          * controller state every 1 sec and trigger OCR when
6278          * it enters fault state
6279          */
6280         if (instance->adapter_type != MFI_SERIES)
6281                 if (megasas_fusion_start_watchdog(instance) != SUCCESS)
6282                         goto fail_start_watchdog;
6283
6284         return 0;
6285
6286 fail_start_watchdog:
6287         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
6288                 del_timer_sync(&instance->sriov_heartbeat_timer);
6289 fail_get_ld_pd_list:
6290         instance->instancet->disable_intr(instance);
6291         megasas_destroy_irqs(instance);
6292 fail_init_adapter:
6293         if (instance->msix_vectors)
6294                 pci_free_irq_vectors(instance->pdev);
6295         instance->msix_vectors = 0;
6296 fail_alloc_dma_buf:
6297         megasas_free_ctrl_dma_buffers(instance);
6298         megasas_free_ctrl_mem(instance);
6299 fail_ready_state:
6300         iounmap(instance->reg_set);
6301
6302 fail_ioremap:
6303         pci_release_selected_regions(instance->pdev, 1<<instance->bar);
6304
6305         dev_err(&instance->pdev->dev, "Failed from %s %d\n",
6306                 __func__, __LINE__);
6307         return -EINVAL;
6308 }
6309
6310 /**
6311  * megasas_release_mfi -        Reverses the FW initialization
6312  * @instance:                   Adapter soft state
6313  */
6314 static void megasas_release_mfi(struct megasas_instance *instance)
6315 {
6316         u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
6317
6318         if (instance->reply_queue)
6319                 dma_free_coherent(&instance->pdev->dev, reply_q_sz,
6320                             instance->reply_queue, instance->reply_queue_h);
6321
6322         megasas_free_cmds(instance);
6323
6324         iounmap(instance->reg_set);
6325
6326         pci_release_selected_regions(instance->pdev, 1<<instance->bar);
6327 }
6328
6329 /**
6330  * megasas_get_seq_num -        Gets latest event sequence numbers
6331  * @instance:                   Adapter soft state
6332  * @eli:                        FW event log sequence numbers information
6333  *
6334  * FW maintains a log of all events in a non-volatile area. Upper layers would
6335  * usually find out the latest sequence number of the events, the seq number at
6336  * the boot etc. They would "read" all the events below the latest seq number
6337  * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
6338  * number), they would subsribe to AEN (asynchronous event notification) and
6339  * wait for the events to happen.
6340  */
6341 static int
6342 megasas_get_seq_num(struct megasas_instance *instance,
6343                     struct megasas_evt_log_info *eli)
6344 {
6345         struct megasas_cmd *cmd;
6346         struct megasas_dcmd_frame *dcmd;
6347         struct megasas_evt_log_info *el_info;
6348         dma_addr_t el_info_h = 0;
6349         int ret;
6350
6351         cmd = megasas_get_cmd(instance);
6352
6353         if (!cmd) {
6354                 return -ENOMEM;
6355         }
6356
6357         dcmd = &cmd->frame->dcmd;
6358         el_info = dma_alloc_coherent(&instance->pdev->dev,
6359                                      sizeof(struct megasas_evt_log_info),
6360                                      &el_info_h, GFP_KERNEL);
6361         if (!el_info) {
6362                 megasas_return_cmd(instance, cmd);
6363                 return -ENOMEM;
6364         }
6365
6366         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6367
6368         dcmd->cmd = MFI_CMD_DCMD;
6369         dcmd->cmd_status = 0x0;
6370         dcmd->sge_count = 1;
6371         dcmd->flags = MFI_FRAME_DIR_READ;
6372         dcmd->timeout = 0;
6373         dcmd->pad_0 = 0;
6374         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info));
6375         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO);
6376
6377         megasas_set_dma_settings(instance, dcmd, el_info_h,
6378                                  sizeof(struct megasas_evt_log_info));
6379
6380         ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
6381         if (ret != DCMD_SUCCESS) {
6382                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
6383                         __func__, __LINE__);
6384                 goto dcmd_failed;
6385         }
6386
6387         /*
6388          * Copy the data back into callers buffer
6389          */
6390         eli->newest_seq_num = el_info->newest_seq_num;
6391         eli->oldest_seq_num = el_info->oldest_seq_num;
6392         eli->clear_seq_num = el_info->clear_seq_num;
6393         eli->shutdown_seq_num = el_info->shutdown_seq_num;
6394         eli->boot_seq_num = el_info->boot_seq_num;
6395
6396 dcmd_failed:
6397         dma_free_coherent(&instance->pdev->dev,
6398                         sizeof(struct megasas_evt_log_info),
6399                         el_info, el_info_h);
6400
6401         megasas_return_cmd(instance, cmd);
6402
6403         return ret;
6404 }
6405
6406 /**
6407  * megasas_register_aen -       Registers for asynchronous event notification
6408  * @instance:                   Adapter soft state
6409  * @seq_num:                    The starting sequence number
6410  * @class_locale:               Class of the event
6411  *
6412  * This function subscribes for AEN for events beyond the @seq_num. It requests
6413  * to be notified if and only if the event is of type @class_locale
6414  */
6415 static int
6416 megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
6417                      u32 class_locale_word)
6418 {
6419         int ret_val;
6420         struct megasas_cmd *cmd;
6421         struct megasas_dcmd_frame *dcmd;
6422         union megasas_evt_class_locale curr_aen;
6423         union megasas_evt_class_locale prev_aen;
6424
6425         /*
6426          * If there an AEN pending already (aen_cmd), check if the
6427          * class_locale of that pending AEN is inclusive of the new
6428          * AEN request we currently have. If it is, then we don't have
6429          * to do anything. In other words, whichever events the current
6430          * AEN request is subscribing to, have already been subscribed
6431          * to.
6432          *
6433          * If the old_cmd is _not_ inclusive, then we have to abort
6434          * that command, form a class_locale that is superset of both
6435          * old and current and re-issue to the FW
6436          */
6437
6438         curr_aen.word = class_locale_word;
6439
6440         if (instance->aen_cmd) {
6441
6442                 prev_aen.word =
6443                         le32_to_cpu(instance->aen_cmd->frame->dcmd.mbox.w[1]);
6444
6445                 if ((curr_aen.members.class < MFI_EVT_CLASS_DEBUG) ||
6446                     (curr_aen.members.class > MFI_EVT_CLASS_DEAD)) {
6447                         dev_info(&instance->pdev->dev,
6448                                  "%s %d out of range class %d send by application\n",
6449                                  __func__, __LINE__, curr_aen.members.class);
6450                         return 0;
6451                 }
6452
6453                 /*
6454                  * A class whose enum value is smaller is inclusive of all
6455                  * higher values. If a PROGRESS (= -1) was previously
6456                  * registered, then a new registration requests for higher
6457                  * classes need not be sent to FW. They are automatically
6458                  * included.
6459                  *
6460                  * Locale numbers don't have such hierarchy. They are bitmap
6461                  * values
6462                  */
6463                 if ((prev_aen.members.class <= curr_aen.members.class) &&
6464                     !((prev_aen.members.locale & curr_aen.members.locale) ^
6465                       curr_aen.members.locale)) {
6466                         /*
6467                          * Previously issued event registration includes
6468                          * current request. Nothing to do.
6469                          */
6470                         return 0;
6471                 } else {
6472                         curr_aen.members.locale |= prev_aen.members.locale;
6473
6474                         if (prev_aen.members.class < curr_aen.members.class)
6475                                 curr_aen.members.class = prev_aen.members.class;
6476
6477                         instance->aen_cmd->abort_aen = 1;
6478                         ret_val = megasas_issue_blocked_abort_cmd(instance,
6479                                                                   instance->
6480                                                                   aen_cmd, 30);
6481
6482                         if (ret_val) {
6483                                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to abort "
6484                                        "previous AEN command\n");
6485                                 return ret_val;
6486                         }
6487                 }
6488         }
6489
6490         cmd = megasas_get_cmd(instance);
6491
6492         if (!cmd)
6493                 return -ENOMEM;
6494
6495         dcmd = &cmd->frame->dcmd;
6496
6497         memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
6498
6499         /*
6500          * Prepare DCMD for aen registration
6501          */
6502         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6503
6504         dcmd->cmd = MFI_CMD_DCMD;
6505         dcmd->cmd_status = 0x0;
6506         dcmd->sge_count = 1;
6507         dcmd->flags = MFI_FRAME_DIR_READ;
6508         dcmd->timeout = 0;
6509         dcmd->pad_0 = 0;
6510         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail));
6511         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT);
6512         dcmd->mbox.w[0] = cpu_to_le32(seq_num);
6513         instance->last_seq_num = seq_num;
6514         dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word);
6515
6516         megasas_set_dma_settings(instance, dcmd, instance->evt_detail_h,
6517                                  sizeof(struct megasas_evt_detail));
6518
6519         if (instance->aen_cmd != NULL) {
6520                 megasas_return_cmd(instance, cmd);
6521                 return 0;
6522         }
6523
6524         /*
6525          * Store reference to the cmd used to register for AEN. When an
6526          * application wants us to register for AEN, we have to abort this
6527          * cmd and re-register with a new EVENT LOCALE supplied by that app
6528          */
6529         instance->aen_cmd = cmd;
6530
6531         /*
6532          * Issue the aen registration frame
6533          */
6534         instance->instancet->issue_dcmd(instance, cmd);
6535
6536         return 0;
6537 }
6538
6539 /* megasas_get_target_prop - Send DCMD with below details to firmware.
6540  *
6541  * This DCMD will fetch few properties of LD/system PD defined
6542  * in MR_TARGET_DEV_PROPERTIES. eg. Queue Depth, MDTS value.
6543  *
6544  * DCMD send by drivers whenever new target is added to the OS.
6545  *
6546  * dcmd.opcode         - MR_DCMD_DEV_GET_TARGET_PROP
6547  * dcmd.mbox.b[0]      - DCMD is to be fired for LD or system PD.
6548  *                       0 = system PD, 1 = LD.
6549  * dcmd.mbox.s[1]      - TargetID for LD/system PD.
6550  * dcmd.sge IN         - Pointer to return MR_TARGET_DEV_PROPERTIES.
6551  *
6552  * @instance:           Adapter soft state
6553  * @sdev:               OS provided scsi device
6554  *
6555  * Returns 0 on success non-zero on failure.
6556  */
6557 int
6558 megasas_get_target_prop(struct megasas_instance *instance,
6559                         struct scsi_device *sdev)
6560 {
6561         int ret;
6562         struct megasas_cmd *cmd;
6563         struct megasas_dcmd_frame *dcmd;
6564         u16 targetId = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL) +
6565                         sdev->id;
6566
6567         cmd = megasas_get_cmd(instance);
6568
6569         if (!cmd) {
6570                 dev_err(&instance->pdev->dev,
6571                         "Failed to get cmd %s\n", __func__);
6572                 return -ENOMEM;
6573         }
6574
6575         dcmd = &cmd->frame->dcmd;
6576
6577         memset(instance->tgt_prop, 0, sizeof(*instance->tgt_prop));
6578         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6579         dcmd->mbox.b[0] = MEGASAS_IS_LOGICAL(sdev);
6580
6581         dcmd->mbox.s[1] = cpu_to_le16(targetId);
6582         dcmd->cmd = MFI_CMD_DCMD;
6583         dcmd->cmd_status = 0xFF;
6584         dcmd->sge_count = 1;
6585         dcmd->flags = MFI_FRAME_DIR_READ;
6586         dcmd->timeout = 0;
6587         dcmd->pad_0 = 0;
6588         dcmd->data_xfer_len =
6589                 cpu_to_le32(sizeof(struct MR_TARGET_PROPERTIES));
6590         dcmd->opcode = cpu_to_le32(MR_DCMD_DRV_GET_TARGET_PROP);
6591
6592         megasas_set_dma_settings(instance, dcmd, instance->tgt_prop_h,
6593                                  sizeof(struct MR_TARGET_PROPERTIES));
6594
6595         if ((instance->adapter_type != MFI_SERIES) &&
6596             !instance->mask_interrupts)
6597                 ret = megasas_issue_blocked_cmd(instance,
6598                                                 cmd, MFI_IO_TIMEOUT_SECS);
6599         else
6600                 ret = megasas_issue_polled(instance, cmd);
6601
6602         switch (ret) {
6603         case DCMD_TIMEOUT:
6604                 switch (dcmd_timeout_ocr_possible(instance)) {
6605                 case INITIATE_OCR:
6606                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
6607                         mutex_unlock(&instance->reset_mutex);
6608                         megasas_reset_fusion(instance->host,
6609                                              MFI_IO_TIMEOUT_OCR);
6610                         mutex_lock(&instance->reset_mutex);
6611                         break;
6612                 case KILL_ADAPTER:
6613                         megaraid_sas_kill_hba(instance);
6614                         break;
6615                 case IGNORE_TIMEOUT:
6616                         dev_info(&instance->pdev->dev,
6617                                  "Ignore DCMD timeout: %s %d\n",
6618                                  __func__, __LINE__);
6619                         break;
6620                 }
6621                 break;
6622
6623         default:
6624                 megasas_return_cmd(instance, cmd);
6625         }
6626         if (ret != DCMD_SUCCESS)
6627                 dev_err(&instance->pdev->dev,
6628                         "return from %s %d return value %d\n",
6629                         __func__, __LINE__, ret);
6630
6631         return ret;
6632 }
6633
6634 /**
6635  * megasas_start_aen -  Subscribes to AEN during driver load time
6636  * @instance:           Adapter soft state
6637  */
6638 static int megasas_start_aen(struct megasas_instance *instance)
6639 {
6640         struct megasas_evt_log_info eli;
6641         union megasas_evt_class_locale class_locale;
6642
6643         /*
6644          * Get the latest sequence number from FW
6645          */
6646         memset(&eli, 0, sizeof(eli));
6647
6648         if (megasas_get_seq_num(instance, &eli))
6649                 return -1;
6650
6651         /*
6652          * Register AEN with FW for latest sequence number plus 1
6653          */
6654         class_locale.members.reserved = 0;
6655         class_locale.members.locale = MR_EVT_LOCALE_ALL;
6656         class_locale.members.class = MR_EVT_CLASS_DEBUG;
6657
6658         return megasas_register_aen(instance,
6659                         le32_to_cpu(eli.newest_seq_num) + 1,
6660                         class_locale.word);
6661 }
6662
6663 /**
6664  * megasas_io_attach -  Attaches this driver to SCSI mid-layer
6665  * @instance:           Adapter soft state
6666  */
6667 static int megasas_io_attach(struct megasas_instance *instance)
6668 {
6669         struct Scsi_Host *host = instance->host;
6670
6671         /*
6672          * Export parameters required by SCSI mid-layer
6673          */
6674         host->unique_id = instance->unique_id;
6675         host->can_queue = instance->max_scsi_cmds;
6676         host->this_id = instance->init_id;
6677         host->sg_tablesize = instance->max_num_sge;
6678
6679         if (instance->fw_support_ieee)
6680                 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE;
6681
6682         /*
6683          * Check if the module parameter value for max_sectors can be used
6684          */
6685         if (max_sectors && max_sectors < instance->max_sectors_per_req)
6686                 instance->max_sectors_per_req = max_sectors;
6687         else {
6688                 if (max_sectors) {
6689                         if (((instance->pdev->device ==
6690                                 PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
6691                                 (instance->pdev->device ==
6692                                 PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
6693                                 (max_sectors <= MEGASAS_MAX_SECTORS)) {
6694                                 instance->max_sectors_per_req = max_sectors;
6695                         } else {
6696                         dev_info(&instance->pdev->dev, "max_sectors should be > 0"
6697                                 "and <= %d (or < 1MB for GEN2 controller)\n",
6698                                 instance->max_sectors_per_req);
6699                         }
6700                 }
6701         }
6702
6703         host->max_sectors = instance->max_sectors_per_req;
6704         host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
6705         host->max_channel = MEGASAS_MAX_CHANNELS - 1;
6706         host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
6707         host->max_lun = MEGASAS_MAX_LUN;
6708         host->max_cmd_len = 16;
6709
6710         /*
6711          * Notify the mid-layer about the new controller
6712          */
6713         if (scsi_add_host(host, &instance->pdev->dev)) {
6714                 dev_err(&instance->pdev->dev,
6715                         "Failed to add host from %s %d\n",
6716                         __func__, __LINE__);
6717                 return -ENODEV;
6718         }
6719
6720         return 0;
6721 }
6722
6723 /**
6724  * megasas_set_dma_mask -       Set DMA mask for supported controllers
6725  *
6726  * @instance:           Adapter soft state
6727  * Description:
6728  *
6729  * For Ventura, driver/FW will operate in 63bit DMA addresses.
6730  *
6731  * For invader-
6732  *      By default, driver/FW will operate in 32bit DMA addresses
6733  *      for consistent DMA mapping but if 32 bit consistent
6734  *      DMA mask fails, driver will try with 63 bit consistent
6735  *      mask provided FW is true 63bit DMA capable
6736  *
6737  * For older controllers(Thunderbolt and MFI based adapters)-
6738  *      driver/FW will operate in 32 bit consistent DMA addresses.
6739  */
6740 static int
6741 megasas_set_dma_mask(struct megasas_instance *instance)
6742 {
6743         u64 consistent_mask;
6744         struct pci_dev *pdev;
6745         u32 scratch_pad_1;
6746
6747         pdev = instance->pdev;
6748         consistent_mask = (instance->adapter_type >= VENTURA_SERIES) ?
6749                                 DMA_BIT_MASK(63) : DMA_BIT_MASK(32);
6750
6751         if (IS_DMA64) {
6752                 if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(63)) &&
6753                     dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
6754                         goto fail_set_dma_mask;
6755
6756                 if ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) &&
6757                     (dma_set_coherent_mask(&pdev->dev, consistent_mask) &&
6758                      dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))) {
6759                         /*
6760                          * If 32 bit DMA mask fails, then try for 64 bit mask
6761                          * for FW capable of handling 64 bit DMA.
6762                          */
6763                         scratch_pad_1 = megasas_readl
6764                                 (instance, &instance->reg_set->outbound_scratch_pad_1);
6765
6766                         if (!(scratch_pad_1 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET))
6767                                 goto fail_set_dma_mask;
6768                         else if (dma_set_mask_and_coherent(&pdev->dev,
6769                                                            DMA_BIT_MASK(63)))
6770                                 goto fail_set_dma_mask;
6771                 }
6772         } else if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
6773                 goto fail_set_dma_mask;
6774
6775         if (pdev->dev.coherent_dma_mask == DMA_BIT_MASK(32))
6776                 instance->consistent_mask_64bit = false;
6777         else
6778                 instance->consistent_mask_64bit = true;
6779
6780         dev_info(&pdev->dev, "%s bit DMA mask and %s bit consistent mask\n",
6781                  ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) ? "63" : "32"),
6782                  (instance->consistent_mask_64bit ? "63" : "32"));
6783
6784         return 0;
6785
6786 fail_set_dma_mask:
6787         dev_err(&pdev->dev, "Failed to set DMA mask\n");
6788         return -1;
6789
6790 }
6791
6792 /*
6793  * megasas_set_adapter_type -   Set adapter type.
6794  *                              Supported controllers can be divided in
6795  *                              different categories-
6796  *                                      enum MR_ADAPTER_TYPE {
6797  *                                              MFI_SERIES = 1,
6798  *                                              THUNDERBOLT_SERIES = 2,
6799  *                                              INVADER_SERIES = 3,
6800  *                                              VENTURA_SERIES = 4,
6801  *                                              AERO_SERIES = 5,
6802  *                                      };
6803  * @instance:                   Adapter soft state
6804  * return:                      void
6805  */
6806 static inline void megasas_set_adapter_type(struct megasas_instance *instance)
6807 {
6808         if ((instance->pdev->vendor == PCI_VENDOR_ID_DELL) &&
6809             (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5)) {
6810                 instance->adapter_type = MFI_SERIES;
6811         } else {
6812                 switch (instance->pdev->device) {
6813                 case PCI_DEVICE_ID_LSI_AERO_10E1:
6814                 case PCI_DEVICE_ID_LSI_AERO_10E2:
6815                 case PCI_DEVICE_ID_LSI_AERO_10E5:
6816                 case PCI_DEVICE_ID_LSI_AERO_10E6:
6817                         instance->adapter_type = AERO_SERIES;
6818                         break;
6819                 case PCI_DEVICE_ID_LSI_VENTURA:
6820                 case PCI_DEVICE_ID_LSI_CRUSADER:
6821                 case PCI_DEVICE_ID_LSI_HARPOON:
6822                 case PCI_DEVICE_ID_LSI_TOMCAT:
6823                 case PCI_DEVICE_ID_LSI_VENTURA_4PORT:
6824                 case PCI_DEVICE_ID_LSI_CRUSADER_4PORT:
6825                         instance->adapter_type = VENTURA_SERIES;
6826                         break;
6827                 case PCI_DEVICE_ID_LSI_FUSION:
6828                 case PCI_DEVICE_ID_LSI_PLASMA:
6829                         instance->adapter_type = THUNDERBOLT_SERIES;
6830                         break;
6831                 case PCI_DEVICE_ID_LSI_INVADER:
6832                 case PCI_DEVICE_ID_LSI_INTRUDER:
6833                 case PCI_DEVICE_ID_LSI_INTRUDER_24:
6834                 case PCI_DEVICE_ID_LSI_CUTLASS_52:
6835                 case PCI_DEVICE_ID_LSI_CUTLASS_53:
6836                 case PCI_DEVICE_ID_LSI_FURY:
6837                         instance->adapter_type = INVADER_SERIES;
6838                         break;
6839                 default: /* For all other supported controllers */
6840                         instance->adapter_type = MFI_SERIES;
6841                         break;
6842                 }
6843         }
6844 }
6845
6846 static inline int megasas_alloc_mfi_ctrl_mem(struct megasas_instance *instance)
6847 {
6848         instance->producer = dma_alloc_coherent(&instance->pdev->dev,
6849                         sizeof(u32), &instance->producer_h, GFP_KERNEL);
6850         instance->consumer = dma_alloc_coherent(&instance->pdev->dev,
6851                         sizeof(u32), &instance->consumer_h, GFP_KERNEL);
6852
6853         if (!instance->producer || !instance->consumer) {
6854                 dev_err(&instance->pdev->dev,
6855                         "Failed to allocate memory for producer, consumer\n");
6856                 return -1;
6857         }
6858
6859         *instance->producer = 0;
6860         *instance->consumer = 0;
6861         return 0;
6862 }
6863
6864 /**
6865  * megasas_alloc_ctrl_mem -     Allocate per controller memory for core data
6866  *                              structures which are not common across MFI
6867  *                              adapters and fusion adapters.
6868  *                              For MFI based adapters, allocate producer and
6869  *                              consumer buffers. For fusion adapters, allocate
6870  *                              memory for fusion context.
6871  * @instance:                   Adapter soft state
6872  * return:                      0 for SUCCESS
6873  */
6874 static int megasas_alloc_ctrl_mem(struct megasas_instance *instance)
6875 {
6876         instance->reply_map = kcalloc(nr_cpu_ids, sizeof(unsigned int),
6877                                       GFP_KERNEL);
6878         if (!instance->reply_map)
6879                 return -ENOMEM;
6880
6881         switch (instance->adapter_type) {
6882         case MFI_SERIES:
6883                 if (megasas_alloc_mfi_ctrl_mem(instance))
6884                         goto fail;
6885                 break;
6886         case AERO_SERIES:
6887         case VENTURA_SERIES:
6888         case THUNDERBOLT_SERIES:
6889         case INVADER_SERIES:
6890                 if (megasas_alloc_fusion_context(instance))
6891                         goto fail;
6892                 break;
6893         }
6894
6895         return 0;
6896  fail:
6897         kfree(instance->reply_map);
6898         instance->reply_map = NULL;
6899         return -ENOMEM;
6900 }
6901
6902 /*
6903  * megasas_free_ctrl_mem -      Free fusion context for fusion adapters and
6904  *                              producer, consumer buffers for MFI adapters
6905  *
6906  * @instance -                  Adapter soft instance
6907  *
6908  */
6909 static inline void megasas_free_ctrl_mem(struct megasas_instance *instance)
6910 {
6911         kfree(instance->reply_map);
6912         if (instance->adapter_type == MFI_SERIES) {
6913                 if (instance->producer)
6914                         dma_free_coherent(&instance->pdev->dev, sizeof(u32),
6915                                             instance->producer,
6916                                             instance->producer_h);
6917                 if (instance->consumer)
6918                         dma_free_coherent(&instance->pdev->dev, sizeof(u32),
6919                                             instance->consumer,
6920                                             instance->consumer_h);
6921         } else {
6922                 megasas_free_fusion_context(instance);
6923         }
6924 }
6925
6926 /**
6927  * megasas_alloc_ctrl_dma_buffers -     Allocate consistent DMA buffers during
6928  *                                      driver load time
6929  *
6930  * @instance-                           Adapter soft instance
6931  * @return-                             O for SUCCESS
6932  */
6933 static inline
6934 int megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance)
6935 {
6936         struct pci_dev *pdev = instance->pdev;
6937         struct fusion_context *fusion = instance->ctrl_context;
6938
6939         instance->evt_detail = dma_alloc_coherent(&pdev->dev,
6940                         sizeof(struct megasas_evt_detail),
6941                         &instance->evt_detail_h, GFP_KERNEL);
6942
6943         if (!instance->evt_detail) {
6944                 dev_err(&instance->pdev->dev,
6945                         "Failed to allocate event detail buffer\n");
6946                 return -ENOMEM;
6947         }
6948
6949         if (fusion) {
6950                 fusion->ioc_init_request =
6951                         dma_alloc_coherent(&pdev->dev,
6952                                            sizeof(struct MPI2_IOC_INIT_REQUEST),
6953                                            &fusion->ioc_init_request_phys,
6954                                            GFP_KERNEL);
6955
6956                 if (!fusion->ioc_init_request) {
6957                         dev_err(&pdev->dev,
6958                                 "Failed to allocate PD list buffer\n");
6959                         return -ENOMEM;
6960                 }
6961
6962                 instance->snapdump_prop = dma_alloc_coherent(&pdev->dev,
6963                                 sizeof(struct MR_SNAPDUMP_PROPERTIES),
6964                                 &instance->snapdump_prop_h, GFP_KERNEL);
6965
6966                 if (!instance->snapdump_prop)
6967                         dev_err(&pdev->dev,
6968                                 "Failed to allocate snapdump properties buffer\n");
6969
6970                 instance->host_device_list_buf = dma_alloc_coherent(&pdev->dev,
6971                                                         HOST_DEVICE_LIST_SZ,
6972                                                         &instance->host_device_list_buf_h,
6973                                                         GFP_KERNEL);
6974
6975                 if (!instance->host_device_list_buf) {
6976                         dev_err(&pdev->dev,
6977                                 "Failed to allocate targetid list buffer\n");
6978                         return -ENOMEM;
6979                 }
6980
6981         }
6982
6983         instance->pd_list_buf =
6984                 dma_alloc_coherent(&pdev->dev,
6985                                      MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
6986                                      &instance->pd_list_buf_h, GFP_KERNEL);
6987
6988         if (!instance->pd_list_buf) {
6989                 dev_err(&pdev->dev, "Failed to allocate PD list buffer\n");
6990                 return -ENOMEM;
6991         }
6992
6993         instance->ctrl_info_buf =
6994                 dma_alloc_coherent(&pdev->dev,
6995                                      sizeof(struct megasas_ctrl_info),
6996                                      &instance->ctrl_info_buf_h, GFP_KERNEL);
6997
6998         if (!instance->ctrl_info_buf) {
6999                 dev_err(&pdev->dev,
7000                         "Failed to allocate controller info buffer\n");
7001                 return -ENOMEM;
7002         }
7003
7004         instance->ld_list_buf =
7005                 dma_alloc_coherent(&pdev->dev,
7006                                      sizeof(struct MR_LD_LIST),
7007                                      &instance->ld_list_buf_h, GFP_KERNEL);
7008
7009         if (!instance->ld_list_buf) {
7010                 dev_err(&pdev->dev, "Failed to allocate LD list buffer\n");
7011                 return -ENOMEM;
7012         }
7013
7014         instance->ld_targetid_list_buf =
7015                 dma_alloc_coherent(&pdev->dev,
7016                                 sizeof(struct MR_LD_TARGETID_LIST),
7017                                 &instance->ld_targetid_list_buf_h, GFP_KERNEL);
7018
7019         if (!instance->ld_targetid_list_buf) {
7020                 dev_err(&pdev->dev,
7021                         "Failed to allocate LD targetid list buffer\n");
7022                 return -ENOMEM;
7023         }
7024
7025         if (!reset_devices) {
7026                 instance->system_info_buf =
7027                         dma_alloc_coherent(&pdev->dev,
7028                                         sizeof(struct MR_DRV_SYSTEM_INFO),
7029                                         &instance->system_info_h, GFP_KERNEL);
7030                 instance->pd_info =
7031                         dma_alloc_coherent(&pdev->dev,
7032                                         sizeof(struct MR_PD_INFO),
7033                                         &instance->pd_info_h, GFP_KERNEL);
7034                 instance->tgt_prop =
7035                         dma_alloc_coherent(&pdev->dev,
7036                                         sizeof(struct MR_TARGET_PROPERTIES),
7037                                         &instance->tgt_prop_h, GFP_KERNEL);
7038                 instance->crash_dump_buf =
7039                         dma_alloc_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE,
7040                                         &instance->crash_dump_h, GFP_KERNEL);
7041
7042                 if (!instance->system_info_buf)
7043                         dev_err(&instance->pdev->dev,
7044                                 "Failed to allocate system info buffer\n");
7045
7046                 if (!instance->pd_info)
7047                         dev_err(&instance->pdev->dev,
7048                                 "Failed to allocate pd_info buffer\n");
7049
7050                 if (!instance->tgt_prop)
7051                         dev_err(&instance->pdev->dev,
7052                                 "Failed to allocate tgt_prop buffer\n");
7053
7054                 if (!instance->crash_dump_buf)
7055                         dev_err(&instance->pdev->dev,
7056                                 "Failed to allocate crash dump buffer\n");
7057         }
7058
7059         return 0;
7060 }
7061
7062 /*
7063  * megasas_free_ctrl_dma_buffers -      Free consistent DMA buffers allocated
7064  *                                      during driver load time
7065  *
7066  * @instance-                           Adapter soft instance
7067  *
7068  */
7069 static inline
7070 void megasas_free_ctrl_dma_buffers(struct megasas_instance *instance)
7071 {
7072         struct pci_dev *pdev = instance->pdev;
7073         struct fusion_context *fusion = instance->ctrl_context;
7074
7075         if (instance->evt_detail)
7076                 dma_free_coherent(&pdev->dev, sizeof(struct megasas_evt_detail),
7077                                     instance->evt_detail,
7078                                     instance->evt_detail_h);
7079
7080         if (fusion && fusion->ioc_init_request)
7081                 dma_free_coherent(&pdev->dev,
7082                                   sizeof(struct MPI2_IOC_INIT_REQUEST),
7083                                   fusion->ioc_init_request,
7084                                   fusion->ioc_init_request_phys);
7085
7086         if (instance->pd_list_buf)
7087                 dma_free_coherent(&pdev->dev,
7088                                     MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
7089                                     instance->pd_list_buf,
7090                                     instance->pd_list_buf_h);
7091
7092         if (instance->ld_list_buf)
7093                 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_LIST),
7094                                     instance->ld_list_buf,
7095                                     instance->ld_list_buf_h);
7096
7097         if (instance->ld_targetid_list_buf)
7098                 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_TARGETID_LIST),
7099                                     instance->ld_targetid_list_buf,
7100                                     instance->ld_targetid_list_buf_h);
7101
7102         if (instance->ctrl_info_buf)
7103                 dma_free_coherent(&pdev->dev, sizeof(struct megasas_ctrl_info),
7104                                     instance->ctrl_info_buf,
7105                                     instance->ctrl_info_buf_h);
7106
7107         if (instance->system_info_buf)
7108                 dma_free_coherent(&pdev->dev, sizeof(struct MR_DRV_SYSTEM_INFO),
7109                                     instance->system_info_buf,
7110                                     instance->system_info_h);
7111
7112         if (instance->pd_info)
7113                 dma_free_coherent(&pdev->dev, sizeof(struct MR_PD_INFO),
7114                                     instance->pd_info, instance->pd_info_h);
7115
7116         if (instance->tgt_prop)
7117                 dma_free_coherent(&pdev->dev, sizeof(struct MR_TARGET_PROPERTIES),
7118                                     instance->tgt_prop, instance->tgt_prop_h);
7119
7120         if (instance->crash_dump_buf)
7121                 dma_free_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE,
7122                                     instance->crash_dump_buf,
7123                                     instance->crash_dump_h);
7124
7125         if (instance->snapdump_prop)
7126                 dma_free_coherent(&pdev->dev,
7127                                   sizeof(struct MR_SNAPDUMP_PROPERTIES),
7128                                   instance->snapdump_prop,
7129                                   instance->snapdump_prop_h);
7130
7131         if (instance->host_device_list_buf)
7132                 dma_free_coherent(&pdev->dev,
7133                                   HOST_DEVICE_LIST_SZ,
7134                                   instance->host_device_list_buf,
7135                                   instance->host_device_list_buf_h);
7136
7137 }
7138
7139 /*
7140  * megasas_init_ctrl_params -           Initialize controller's instance
7141  *                                      parameters before FW init
7142  * @instance -                          Adapter soft instance
7143  * @return -                            void
7144  */
7145 static inline void megasas_init_ctrl_params(struct megasas_instance *instance)
7146 {
7147         instance->fw_crash_state = UNAVAILABLE;
7148
7149         megasas_poll_wait_aen = 0;
7150         instance->issuepend_done = 1;
7151         atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
7152
7153         /*
7154          * Initialize locks and queues
7155          */
7156         INIT_LIST_HEAD(&instance->cmd_pool);
7157         INIT_LIST_HEAD(&instance->internal_reset_pending_q);
7158
7159         atomic_set(&instance->fw_outstanding, 0);
7160         atomic64_set(&instance->total_io_count, 0);
7161
7162         init_waitqueue_head(&instance->int_cmd_wait_q);
7163         init_waitqueue_head(&instance->abort_cmd_wait_q);
7164
7165         spin_lock_init(&instance->crashdump_lock);
7166         spin_lock_init(&instance->mfi_pool_lock);
7167         spin_lock_init(&instance->hba_lock);
7168         spin_lock_init(&instance->stream_lock);
7169         spin_lock_init(&instance->completion_lock);
7170
7171         mutex_init(&instance->reset_mutex);
7172
7173         if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
7174             (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY))
7175                 instance->flag_ieee = 1;
7176
7177         megasas_dbg_lvl = 0;
7178         instance->flag = 0;
7179         instance->unload = 1;
7180         instance->last_time = 0;
7181         instance->disableOnlineCtrlReset = 1;
7182         instance->UnevenSpanSupport = 0;
7183         instance->smp_affinity_enable = smp_affinity_enable ? true : false;
7184         instance->msix_load_balance = false;
7185
7186         if (instance->adapter_type != MFI_SERIES)
7187                 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
7188         else
7189                 INIT_WORK(&instance->work_init, process_fw_state_change_wq);
7190 }
7191
7192 /**
7193  * megasas_probe_one -  PCI hotplug entry point
7194  * @pdev:               PCI device structure
7195  * @id:                 PCI ids of supported hotplugged adapter
7196  */
7197 static int megasas_probe_one(struct pci_dev *pdev,
7198                              const struct pci_device_id *id)
7199 {
7200         int rval, pos;
7201         struct Scsi_Host *host;
7202         struct megasas_instance *instance;
7203         u16 control = 0;
7204
7205         switch (pdev->device) {
7206         case PCI_DEVICE_ID_LSI_AERO_10E0:
7207         case PCI_DEVICE_ID_LSI_AERO_10E3:
7208         case PCI_DEVICE_ID_LSI_AERO_10E4:
7209         case PCI_DEVICE_ID_LSI_AERO_10E7:
7210                 dev_err(&pdev->dev, "Adapter is in non secure mode\n");
7211                 return 1;
7212         case PCI_DEVICE_ID_LSI_AERO_10E1:
7213         case PCI_DEVICE_ID_LSI_AERO_10E5:
7214                 dev_info(&pdev->dev, "Adapter is in configurable secure mode\n");
7215                 break;
7216         }
7217
7218         /* Reset MSI-X in the kdump kernel */
7219         if (reset_devices) {
7220                 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
7221                 if (pos) {
7222                         pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS,
7223                                              &control);
7224                         if (control & PCI_MSIX_FLAGS_ENABLE) {
7225                                 dev_info(&pdev->dev, "resetting MSI-X\n");
7226                                 pci_write_config_word(pdev,
7227                                                       pos + PCI_MSIX_FLAGS,
7228                                                       control &
7229                                                       ~PCI_MSIX_FLAGS_ENABLE);
7230                         }
7231                 }
7232         }
7233
7234         /*
7235          * PCI prepping: enable device set bus mastering and dma mask
7236          */
7237         rval = pci_enable_device_mem(pdev);
7238
7239         if (rval) {
7240                 return rval;
7241         }
7242
7243         pci_set_master(pdev);
7244
7245         host = scsi_host_alloc(&megasas_template,
7246                                sizeof(struct megasas_instance));
7247
7248         if (!host) {
7249                 dev_printk(KERN_DEBUG, &pdev->dev, "scsi_host_alloc failed\n");
7250                 goto fail_alloc_instance;
7251         }
7252
7253         instance = (struct megasas_instance *)host->hostdata;
7254         memset(instance, 0, sizeof(*instance));
7255         atomic_set(&instance->fw_reset_no_pci_access, 0);
7256
7257         /*
7258          * Initialize PCI related and misc parameters
7259          */
7260         instance->pdev = pdev;
7261         instance->host = host;
7262         instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
7263         instance->init_id = MEGASAS_DEFAULT_INIT_ID;
7264
7265         megasas_set_adapter_type(instance);
7266
7267         /*
7268          * Initialize MFI Firmware
7269          */
7270         if (megasas_init_fw(instance))
7271                 goto fail_init_mfi;
7272
7273         if (instance->requestorId) {
7274                 if (instance->PlasmaFW111) {
7275                         instance->vf_affiliation_111 =
7276                                 dma_alloc_coherent(&pdev->dev,
7277                                         sizeof(struct MR_LD_VF_AFFILIATION_111),
7278                                         &instance->vf_affiliation_111_h,
7279                                         GFP_KERNEL);
7280                         if (!instance->vf_affiliation_111)
7281                                 dev_warn(&pdev->dev, "Can't allocate "
7282                                        "memory for VF affiliation buffer\n");
7283                 } else {
7284                         instance->vf_affiliation =
7285                                 dma_alloc_coherent(&pdev->dev,
7286                                         (MAX_LOGICAL_DRIVES + 1) *
7287                                         sizeof(struct MR_LD_VF_AFFILIATION),
7288                                         &instance->vf_affiliation_h,
7289                                         GFP_KERNEL);
7290                         if (!instance->vf_affiliation)
7291                                 dev_warn(&pdev->dev, "Can't allocate "
7292                                        "memory for VF affiliation buffer\n");
7293                 }
7294         }
7295
7296         /*
7297          * Store instance in PCI softstate
7298          */
7299         pci_set_drvdata(pdev, instance);
7300
7301         /*
7302          * Add this controller to megasas_mgmt_info structure so that it
7303          * can be exported to management applications
7304          */
7305         megasas_mgmt_info.count++;
7306         megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
7307         megasas_mgmt_info.max_index++;
7308
7309         /*
7310          * Register with SCSI mid-layer
7311          */
7312         if (megasas_io_attach(instance))
7313                 goto fail_io_attach;
7314
7315         instance->unload = 0;
7316         /*
7317          * Trigger SCSI to scan our drives
7318          */
7319         if (!instance->enable_fw_dev_list ||
7320             (instance->host_device_list_buf->count > 0))
7321                 scsi_scan_host(host);
7322
7323         /*
7324          * Initiate AEN (Asynchronous Event Notification)
7325          */
7326         if (megasas_start_aen(instance)) {
7327                 dev_printk(KERN_DEBUG, &pdev->dev, "start aen failed\n");
7328                 goto fail_start_aen;
7329         }
7330
7331         megasas_setup_debugfs(instance);
7332
7333         /* Get current SR-IOV LD/VF affiliation */
7334         if (instance->requestorId)
7335                 megasas_get_ld_vf_affiliation(instance, 1);
7336
7337         return 0;
7338
7339 fail_start_aen:
7340 fail_io_attach:
7341         megasas_mgmt_info.count--;
7342         megasas_mgmt_info.max_index--;
7343         megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
7344
7345         instance->instancet->disable_intr(instance);
7346         megasas_destroy_irqs(instance);
7347
7348         if (instance->adapter_type != MFI_SERIES)
7349                 megasas_release_fusion(instance);
7350         else
7351                 megasas_release_mfi(instance);
7352         if (instance->msix_vectors)
7353                 pci_free_irq_vectors(instance->pdev);
7354 fail_init_mfi:
7355         scsi_host_put(host);
7356 fail_alloc_instance:
7357         pci_disable_device(pdev);
7358
7359         return -ENODEV;
7360 }
7361
7362 /**
7363  * megasas_flush_cache -        Requests FW to flush all its caches
7364  * @instance:                   Adapter soft state
7365  */
7366 static void megasas_flush_cache(struct megasas_instance *instance)
7367 {
7368         struct megasas_cmd *cmd;
7369         struct megasas_dcmd_frame *dcmd;
7370
7371         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
7372                 return;
7373
7374         cmd = megasas_get_cmd(instance);
7375
7376         if (!cmd)
7377                 return;
7378
7379         dcmd = &cmd->frame->dcmd;
7380
7381         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
7382
7383         dcmd->cmd = MFI_CMD_DCMD;
7384         dcmd->cmd_status = 0x0;
7385         dcmd->sge_count = 0;
7386         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
7387         dcmd->timeout = 0;
7388         dcmd->pad_0 = 0;
7389         dcmd->data_xfer_len = 0;
7390         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH);
7391         dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
7392
7393         if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
7394                         != DCMD_SUCCESS) {
7395                 dev_err(&instance->pdev->dev,
7396                         "return from %s %d\n", __func__, __LINE__);
7397                 return;
7398         }
7399
7400         megasas_return_cmd(instance, cmd);
7401 }
7402
7403 /**
7404  * megasas_shutdown_controller -        Instructs FW to shutdown the controller
7405  * @instance:                           Adapter soft state
7406  * @opcode:                             Shutdown/Hibernate
7407  */
7408 static void megasas_shutdown_controller(struct megasas_instance *instance,
7409                                         u32 opcode)
7410 {
7411         struct megasas_cmd *cmd;
7412         struct megasas_dcmd_frame *dcmd;
7413
7414         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
7415                 return;
7416
7417         cmd = megasas_get_cmd(instance);
7418
7419         if (!cmd)
7420                 return;
7421
7422         if (instance->aen_cmd)
7423                 megasas_issue_blocked_abort_cmd(instance,
7424                         instance->aen_cmd, MFI_IO_TIMEOUT_SECS);
7425         if (instance->map_update_cmd)
7426                 megasas_issue_blocked_abort_cmd(instance,
7427                         instance->map_update_cmd, MFI_IO_TIMEOUT_SECS);
7428         if (instance->jbod_seq_cmd)
7429                 megasas_issue_blocked_abort_cmd(instance,
7430                         instance->jbod_seq_cmd, MFI_IO_TIMEOUT_SECS);
7431
7432         dcmd = &cmd->frame->dcmd;
7433
7434         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
7435
7436         dcmd->cmd = MFI_CMD_DCMD;
7437         dcmd->cmd_status = 0x0;
7438         dcmd->sge_count = 0;
7439         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
7440         dcmd->timeout = 0;
7441         dcmd->pad_0 = 0;
7442         dcmd->data_xfer_len = 0;
7443         dcmd->opcode = cpu_to_le32(opcode);
7444
7445         if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
7446                         != DCMD_SUCCESS) {
7447                 dev_err(&instance->pdev->dev,
7448                         "return from %s %d\n", __func__, __LINE__);
7449                 return;
7450         }
7451
7452         megasas_return_cmd(instance, cmd);
7453 }
7454
7455 #ifdef CONFIG_PM
7456 /**
7457  * megasas_suspend -    driver suspend entry point
7458  * @pdev:               PCI device structure
7459  * @state:              PCI power state to suspend routine
7460  */
7461 static int
7462 megasas_suspend(struct pci_dev *pdev, pm_message_t state)
7463 {
7464         struct megasas_instance *instance;
7465
7466         instance = pci_get_drvdata(pdev);
7467
7468         if (!instance)
7469                 return 0;
7470
7471         instance->unload = 1;
7472
7473         dev_info(&pdev->dev, "%s is called\n", __func__);
7474
7475         /* Shutdown SR-IOV heartbeat timer */
7476         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7477                 del_timer_sync(&instance->sriov_heartbeat_timer);
7478
7479         /* Stop the FW fault detection watchdog */
7480         if (instance->adapter_type != MFI_SERIES)
7481                 megasas_fusion_stop_watchdog(instance);
7482
7483         megasas_flush_cache(instance);
7484         megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
7485
7486         /* cancel the delayed work if this work still in queue */
7487         if (instance->ev != NULL) {
7488                 struct megasas_aen_event *ev = instance->ev;
7489                 cancel_delayed_work_sync(&ev->hotplug_work);
7490                 instance->ev = NULL;
7491         }
7492
7493         tasklet_kill(&instance->isr_tasklet);
7494
7495         pci_set_drvdata(instance->pdev, instance);
7496         instance->instancet->disable_intr(instance);
7497
7498         megasas_destroy_irqs(instance);
7499
7500         if (instance->msix_vectors)
7501                 pci_free_irq_vectors(instance->pdev);
7502
7503         pci_save_state(pdev);
7504         pci_disable_device(pdev);
7505
7506         pci_set_power_state(pdev, pci_choose_state(pdev, state));
7507
7508         return 0;
7509 }
7510
7511 /**
7512  * megasas_resume-      driver resume entry point
7513  * @pdev:               PCI device structure
7514  */
7515 static int
7516 megasas_resume(struct pci_dev *pdev)
7517 {
7518         int rval;
7519         struct Scsi_Host *host;
7520         struct megasas_instance *instance;
7521         int irq_flags = PCI_IRQ_LEGACY;
7522
7523         instance = pci_get_drvdata(pdev);
7524
7525         if (!instance)
7526                 return 0;
7527
7528         host = instance->host;
7529         pci_set_power_state(pdev, PCI_D0);
7530         pci_enable_wake(pdev, PCI_D0, 0);
7531         pci_restore_state(pdev);
7532
7533         dev_info(&pdev->dev, "%s is called\n", __func__);
7534         /*
7535          * PCI prepping: enable device set bus mastering and dma mask
7536          */
7537         rval = pci_enable_device_mem(pdev);
7538
7539         if (rval) {
7540                 dev_err(&pdev->dev, "Enable device failed\n");
7541                 return rval;
7542         }
7543
7544         pci_set_master(pdev);
7545
7546         /*
7547          * We expect the FW state to be READY
7548          */
7549         if (megasas_transition_to_ready(instance, 0))
7550                 goto fail_ready_state;
7551
7552         if (megasas_set_dma_mask(instance))
7553                 goto fail_set_dma_mask;
7554
7555         /*
7556          * Initialize MFI Firmware
7557          */
7558
7559         atomic_set(&instance->fw_outstanding, 0);
7560         atomic_set(&instance->ldio_outstanding, 0);
7561
7562         /* Now re-enable MSI-X */
7563         if (instance->msix_vectors) {
7564                 irq_flags = PCI_IRQ_MSIX;
7565                 if (instance->smp_affinity_enable)
7566                         irq_flags |= PCI_IRQ_AFFINITY;
7567         }
7568         rval = pci_alloc_irq_vectors(instance->pdev, 1,
7569                                      instance->msix_vectors ?
7570                                      instance->msix_vectors : 1, irq_flags);
7571         if (rval < 0)
7572                 goto fail_reenable_msix;
7573
7574         megasas_setup_reply_map(instance);
7575
7576         if (instance->adapter_type != MFI_SERIES) {
7577                 megasas_reset_reply_desc(instance);
7578                 if (megasas_ioc_init_fusion(instance)) {
7579                         megasas_free_cmds(instance);
7580                         megasas_free_cmds_fusion(instance);
7581                         goto fail_init_mfi;
7582                 }
7583                 if (!megasas_get_map_info(instance))
7584                         megasas_sync_map_info(instance);
7585         } else {
7586                 *instance->producer = 0;
7587                 *instance->consumer = 0;
7588                 if (megasas_issue_init_mfi(instance))
7589                         goto fail_init_mfi;
7590         }
7591
7592         if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS)
7593                 goto fail_init_mfi;
7594
7595         tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
7596                      (unsigned long)instance);
7597
7598         if (instance->msix_vectors ?
7599                         megasas_setup_irqs_msix(instance, 0) :
7600                         megasas_setup_irqs_ioapic(instance))
7601                 goto fail_init_mfi;
7602
7603         if (instance->adapter_type != MFI_SERIES)
7604                 megasas_setup_irq_poll(instance);
7605
7606         /* Re-launch SR-IOV heartbeat timer */
7607         if (instance->requestorId) {
7608                 if (!megasas_sriov_start_heartbeat(instance, 0))
7609                         megasas_start_timer(instance);
7610                 else {
7611                         instance->skip_heartbeat_timer_del = 1;
7612                         goto fail_init_mfi;
7613                 }
7614         }
7615
7616         instance->instancet->enable_intr(instance);
7617         megasas_setup_jbod_map(instance);
7618         instance->unload = 0;
7619
7620         /*
7621          * Initiate AEN (Asynchronous Event Notification)
7622          */
7623         if (megasas_start_aen(instance))
7624                 dev_err(&instance->pdev->dev, "Start AEN failed\n");
7625
7626         /* Re-launch FW fault watchdog */
7627         if (instance->adapter_type != MFI_SERIES)
7628                 if (megasas_fusion_start_watchdog(instance) != SUCCESS)
7629                         goto fail_start_watchdog;
7630
7631         return 0;
7632
7633 fail_start_watchdog:
7634         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7635                 del_timer_sync(&instance->sriov_heartbeat_timer);
7636 fail_init_mfi:
7637         megasas_free_ctrl_dma_buffers(instance);
7638         megasas_free_ctrl_mem(instance);
7639         scsi_host_put(host);
7640
7641 fail_reenable_msix:
7642 fail_set_dma_mask:
7643 fail_ready_state:
7644
7645         pci_disable_device(pdev);
7646
7647         return -ENODEV;
7648 }
7649 #else
7650 #define megasas_suspend NULL
7651 #define megasas_resume  NULL
7652 #endif
7653
7654 static inline int
7655 megasas_wait_for_adapter_operational(struct megasas_instance *instance)
7656 {
7657         int wait_time = MEGASAS_RESET_WAIT_TIME * 2;
7658         int i;
7659         u8 adp_state;
7660
7661         for (i = 0; i < wait_time; i++) {
7662                 adp_state = atomic_read(&instance->adprecovery);
7663                 if ((adp_state == MEGASAS_HBA_OPERATIONAL) ||
7664                     (adp_state == MEGASAS_HW_CRITICAL_ERROR))
7665                         break;
7666
7667                 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL))
7668                         dev_notice(&instance->pdev->dev, "waiting for controller reset to finish\n");
7669
7670                 msleep(1000);
7671         }
7672
7673         if (adp_state != MEGASAS_HBA_OPERATIONAL) {
7674                 dev_info(&instance->pdev->dev,
7675                          "%s HBA failed to become operational, adp_state %d\n",
7676                          __func__, adp_state);
7677                 return 1;
7678         }
7679
7680         return 0;
7681 }
7682
7683 /**
7684  * megasas_detach_one - PCI hot"un"plug entry point
7685  * @pdev:               PCI device structure
7686  */
7687 static void megasas_detach_one(struct pci_dev *pdev)
7688 {
7689         int i;
7690         struct Scsi_Host *host;
7691         struct megasas_instance *instance;
7692         struct fusion_context *fusion;
7693         u32 pd_seq_map_sz;
7694
7695         instance = pci_get_drvdata(pdev);
7696
7697         if (!instance)
7698                 return;
7699
7700         host = instance->host;
7701         fusion = instance->ctrl_context;
7702
7703         /* Shutdown SR-IOV heartbeat timer */
7704         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7705                 del_timer_sync(&instance->sriov_heartbeat_timer);
7706
7707         /* Stop the FW fault detection watchdog */
7708         if (instance->adapter_type != MFI_SERIES)
7709                 megasas_fusion_stop_watchdog(instance);
7710
7711         if (instance->fw_crash_state != UNAVAILABLE)
7712                 megasas_free_host_crash_buffer(instance);
7713         scsi_remove_host(instance->host);
7714         instance->unload = 1;
7715
7716         if (megasas_wait_for_adapter_operational(instance))
7717                 goto skip_firing_dcmds;
7718
7719         megasas_flush_cache(instance);
7720         megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
7721
7722 skip_firing_dcmds:
7723         /* cancel the delayed work if this work still in queue*/
7724         if (instance->ev != NULL) {
7725                 struct megasas_aen_event *ev = instance->ev;
7726                 cancel_delayed_work_sync(&ev->hotplug_work);
7727                 instance->ev = NULL;
7728         }
7729
7730         /* cancel all wait events */
7731         wake_up_all(&instance->int_cmd_wait_q);
7732
7733         tasklet_kill(&instance->isr_tasklet);
7734
7735         /*
7736          * Take the instance off the instance array. Note that we will not
7737          * decrement the max_index. We let this array be sparse array
7738          */
7739         for (i = 0; i < megasas_mgmt_info.max_index; i++) {
7740                 if (megasas_mgmt_info.instance[i] == instance) {
7741                         megasas_mgmt_info.count--;
7742                         megasas_mgmt_info.instance[i] = NULL;
7743
7744                         break;
7745                 }
7746         }
7747
7748         instance->instancet->disable_intr(instance);
7749
7750         megasas_destroy_irqs(instance);
7751
7752         if (instance->msix_vectors)
7753                 pci_free_irq_vectors(instance->pdev);
7754
7755         if (instance->adapter_type >= VENTURA_SERIES) {
7756                 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i)
7757                         kfree(fusion->stream_detect_by_ld[i]);
7758                 kfree(fusion->stream_detect_by_ld);
7759                 fusion->stream_detect_by_ld = NULL;
7760         }
7761
7762
7763         if (instance->adapter_type != MFI_SERIES) {
7764                 megasas_release_fusion(instance);
7765                         pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
7766                                 (sizeof(struct MR_PD_CFG_SEQ) *
7767                                         (MAX_PHYSICAL_DEVICES - 1));
7768                 for (i = 0; i < 2 ; i++) {
7769                         if (fusion->ld_map[i])
7770                                 dma_free_coherent(&instance->pdev->dev,
7771                                                   fusion->max_map_sz,
7772                                                   fusion->ld_map[i],
7773                                                   fusion->ld_map_phys[i]);
7774                         if (fusion->ld_drv_map[i]) {
7775                                 if (is_vmalloc_addr(fusion->ld_drv_map[i]))
7776                                         vfree(fusion->ld_drv_map[i]);
7777                                 else
7778                                         free_pages((ulong)fusion->ld_drv_map[i],
7779                                                    fusion->drv_map_pages);
7780                         }
7781
7782                         if (fusion->pd_seq_sync[i])
7783                                 dma_free_coherent(&instance->pdev->dev,
7784                                         pd_seq_map_sz,
7785                                         fusion->pd_seq_sync[i],
7786                                         fusion->pd_seq_phys[i]);
7787                 }
7788         } else {
7789                 megasas_release_mfi(instance);
7790         }
7791
7792         if (instance->vf_affiliation)
7793                 dma_free_coherent(&pdev->dev, (MAX_LOGICAL_DRIVES + 1) *
7794                                     sizeof(struct MR_LD_VF_AFFILIATION),
7795                                     instance->vf_affiliation,
7796                                     instance->vf_affiliation_h);
7797
7798         if (instance->vf_affiliation_111)
7799                 dma_free_coherent(&pdev->dev,
7800                                     sizeof(struct MR_LD_VF_AFFILIATION_111),
7801                                     instance->vf_affiliation_111,
7802                                     instance->vf_affiliation_111_h);
7803
7804         if (instance->hb_host_mem)
7805                 dma_free_coherent(&pdev->dev, sizeof(struct MR_CTRL_HB_HOST_MEM),
7806                                     instance->hb_host_mem,
7807                                     instance->hb_host_mem_h);
7808
7809         megasas_free_ctrl_dma_buffers(instance);
7810
7811         megasas_free_ctrl_mem(instance);
7812
7813         megasas_destroy_debugfs(instance);
7814
7815         scsi_host_put(host);
7816
7817         pci_disable_device(pdev);
7818 }
7819
7820 /**
7821  * megasas_shutdown -   Shutdown entry point
7822  * @device:             Generic device structure
7823  */
7824 static void megasas_shutdown(struct pci_dev *pdev)
7825 {
7826         struct megasas_instance *instance = pci_get_drvdata(pdev);
7827
7828         if (!instance)
7829                 return;
7830
7831         instance->unload = 1;
7832
7833         if (megasas_wait_for_adapter_operational(instance))
7834                 goto skip_firing_dcmds;
7835
7836         megasas_flush_cache(instance);
7837         megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
7838
7839 skip_firing_dcmds:
7840         instance->instancet->disable_intr(instance);
7841         megasas_destroy_irqs(instance);
7842
7843         if (instance->msix_vectors)
7844                 pci_free_irq_vectors(instance->pdev);
7845 }
7846
7847 /**
7848  * megasas_mgmt_open -  char node "open" entry point
7849  */
7850 static int megasas_mgmt_open(struct inode *inode, struct file *filep)
7851 {
7852         /*
7853          * Allow only those users with admin rights
7854          */
7855         if (!capable(CAP_SYS_ADMIN))
7856                 return -EACCES;
7857
7858         return 0;
7859 }
7860
7861 /**
7862  * megasas_mgmt_fasync -        Async notifier registration from applications
7863  *
7864  * This function adds the calling process to a driver global queue. When an
7865  * event occurs, SIGIO will be sent to all processes in this queue.
7866  */
7867 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
7868 {
7869         int rc;
7870
7871         mutex_lock(&megasas_async_queue_mutex);
7872
7873         rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
7874
7875         mutex_unlock(&megasas_async_queue_mutex);
7876
7877         if (rc >= 0) {
7878                 /* For sanity check when we get ioctl */
7879                 filep->private_data = filep;
7880                 return 0;
7881         }
7882
7883         printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
7884
7885         return rc;
7886 }
7887
7888 /**
7889  * megasas_mgmt_poll -  char node "poll" entry point
7890  * */
7891 static __poll_t megasas_mgmt_poll(struct file *file, poll_table *wait)
7892 {
7893         __poll_t mask;
7894         unsigned long flags;
7895
7896         poll_wait(file, &megasas_poll_wait, wait);
7897         spin_lock_irqsave(&poll_aen_lock, flags);
7898         if (megasas_poll_wait_aen)
7899                 mask = (EPOLLIN | EPOLLRDNORM);
7900         else
7901                 mask = 0;
7902         megasas_poll_wait_aen = 0;
7903         spin_unlock_irqrestore(&poll_aen_lock, flags);
7904         return mask;
7905 }
7906
7907 /*
7908  * megasas_set_crash_dump_params_ioctl:
7909  *              Send CRASH_DUMP_MODE DCMD to all controllers
7910  * @cmd:        MFI command frame
7911  */
7912
7913 static int megasas_set_crash_dump_params_ioctl(struct megasas_cmd *cmd)
7914 {
7915         struct megasas_instance *local_instance;
7916         int i, error = 0;
7917         int crash_support;
7918
7919         crash_support = cmd->frame->dcmd.mbox.w[0];
7920
7921         for (i = 0; i < megasas_mgmt_info.max_index; i++) {
7922                 local_instance = megasas_mgmt_info.instance[i];
7923                 if (local_instance && local_instance->crash_dump_drv_support) {
7924                         if ((atomic_read(&local_instance->adprecovery) ==
7925                                 MEGASAS_HBA_OPERATIONAL) &&
7926                                 !megasas_set_crash_dump_params(local_instance,
7927                                         crash_support)) {
7928                                 local_instance->crash_dump_app_support =
7929                                         crash_support;
7930                                 dev_info(&local_instance->pdev->dev,
7931                                         "Application firmware crash "
7932                                         "dump mode set success\n");
7933                                 error = 0;
7934                         } else {
7935                                 dev_info(&local_instance->pdev->dev,
7936                                         "Application firmware crash "
7937                                         "dump mode set failed\n");
7938                                 error = -1;
7939                         }
7940                 }
7941         }
7942         return error;
7943 }
7944
7945 /**
7946  * megasas_mgmt_fw_ioctl -      Issues management ioctls to FW
7947  * @instance:                   Adapter soft state
7948  * @argp:                       User's ioctl packet
7949  */
7950 static int
7951 megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
7952                       struct megasas_iocpacket __user * user_ioc,
7953                       struct megasas_iocpacket *ioc)
7954 {
7955         struct megasas_sge64 *kern_sge64 = NULL;
7956         struct megasas_sge32 *kern_sge32 = NULL;
7957         struct megasas_cmd *cmd;
7958         void *kbuff_arr[MAX_IOCTL_SGE];
7959         dma_addr_t buf_handle = 0;
7960         int error = 0, i;
7961         void *sense = NULL;
7962         dma_addr_t sense_handle;
7963         unsigned long *sense_ptr;
7964         u32 opcode = 0;
7965
7966         memset(kbuff_arr, 0, sizeof(kbuff_arr));
7967
7968         if (ioc->sge_count > MAX_IOCTL_SGE) {
7969                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SGE count [%d] >  max limit [%d]\n",
7970                        ioc->sge_count, MAX_IOCTL_SGE);
7971                 return -EINVAL;
7972         }
7973
7974         if ((ioc->frame.hdr.cmd >= MFI_CMD_OP_COUNT) ||
7975             ((ioc->frame.hdr.cmd == MFI_CMD_NVME) &&
7976             !instance->support_nvme_passthru) ||
7977             ((ioc->frame.hdr.cmd == MFI_CMD_TOOLBOX) &&
7978             !instance->support_pci_lane_margining)) {
7979                 dev_err(&instance->pdev->dev,
7980                         "Received invalid ioctl command 0x%x\n",
7981                         ioc->frame.hdr.cmd);
7982                 return -ENOTSUPP;
7983         }
7984
7985         cmd = megasas_get_cmd(instance);
7986         if (!cmd) {
7987                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a cmd packet\n");
7988                 return -ENOMEM;
7989         }
7990
7991         /*
7992          * User's IOCTL packet has 2 frames (maximum). Copy those two
7993          * frames into our cmd's frames. cmd->frame's context will get
7994          * overwritten when we copy from user's frames. So set that value
7995          * alone separately
7996          */
7997         memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
7998         cmd->frame->hdr.context = cpu_to_le32(cmd->index);
7999         cmd->frame->hdr.pad_0 = 0;
8000
8001         cmd->frame->hdr.flags &= (~MFI_FRAME_IEEE);
8002
8003         if (instance->consistent_mask_64bit)
8004                 cmd->frame->hdr.flags |= cpu_to_le16((MFI_FRAME_SGL64 |
8005                                        MFI_FRAME_SENSE64));
8006         else
8007                 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_SGL64 |
8008                                                MFI_FRAME_SENSE64));
8009
8010         if (cmd->frame->hdr.cmd == MFI_CMD_DCMD)
8011                 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
8012
8013         if (opcode == MR_DCMD_CTRL_SHUTDOWN) {
8014                 mutex_lock(&instance->reset_mutex);
8015                 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS) {
8016                         megasas_return_cmd(instance, cmd);
8017                         mutex_unlock(&instance->reset_mutex);
8018                         return -1;
8019                 }
8020                 mutex_unlock(&instance->reset_mutex);
8021         }
8022
8023         if (opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) {
8024                 error = megasas_set_crash_dump_params_ioctl(cmd);
8025                 megasas_return_cmd(instance, cmd);
8026                 return error;
8027         }
8028
8029         /*
8030          * The management interface between applications and the fw uses
8031          * MFI frames. E.g, RAID configuration changes, LD property changes
8032          * etc are accomplishes through different kinds of MFI frames. The
8033          * driver needs to care only about substituting user buffers with
8034          * kernel buffers in SGLs. The location of SGL is embedded in the
8035          * struct iocpacket itself.
8036          */
8037         if (instance->consistent_mask_64bit)
8038                 kern_sge64 = (struct megasas_sge64 *)
8039                         ((unsigned long)cmd->frame + ioc->sgl_off);
8040         else
8041                 kern_sge32 = (struct megasas_sge32 *)
8042                         ((unsigned long)cmd->frame + ioc->sgl_off);
8043
8044         /*
8045          * For each user buffer, create a mirror buffer and copy in
8046          */
8047         for (i = 0; i < ioc->sge_count; i++) {
8048                 if (!ioc->sgl[i].iov_len)
8049                         continue;
8050
8051                 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
8052                                                     ioc->sgl[i].iov_len,
8053                                                     &buf_handle, GFP_KERNEL);
8054                 if (!kbuff_arr[i]) {
8055                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc "
8056                                "kernel SGL buffer for IOCTL\n");
8057                         error = -ENOMEM;
8058                         goto out;
8059                 }
8060
8061                 /*
8062                  * We don't change the dma_coherent_mask, so
8063                  * dma_alloc_coherent only returns 32bit addresses
8064                  */
8065                 if (instance->consistent_mask_64bit) {
8066                         kern_sge64[i].phys_addr = cpu_to_le64(buf_handle);
8067                         kern_sge64[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
8068                 } else {
8069                         kern_sge32[i].phys_addr = cpu_to_le32(buf_handle);
8070                         kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
8071                 }
8072
8073                 /*
8074                  * We created a kernel buffer corresponding to the
8075                  * user buffer. Now copy in from the user buffer
8076                  */
8077                 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
8078                                    (u32) (ioc->sgl[i].iov_len))) {
8079                         error = -EFAULT;
8080                         goto out;
8081                 }
8082         }
8083
8084         if (ioc->sense_len) {
8085                 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
8086                                              &sense_handle, GFP_KERNEL);
8087                 if (!sense) {
8088                         error = -ENOMEM;
8089                         goto out;
8090                 }
8091
8092                 sense_ptr =
8093                 (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off);
8094                 if (instance->consistent_mask_64bit)
8095                         *sense_ptr = cpu_to_le64(sense_handle);
8096                 else
8097                         *sense_ptr = cpu_to_le32(sense_handle);
8098         }
8099
8100         /*
8101          * Set the sync_cmd flag so that the ISR knows not to complete this
8102          * cmd to the SCSI mid-layer
8103          */
8104         cmd->sync_cmd = 1;
8105         if (megasas_issue_blocked_cmd(instance, cmd, 0) == DCMD_NOT_FIRED) {
8106                 cmd->sync_cmd = 0;
8107                 dev_err(&instance->pdev->dev,
8108                         "return -EBUSY from %s %d cmd 0x%x opcode 0x%x cmd->cmd_status_drv 0x%x\n",
8109                         __func__, __LINE__, cmd->frame->hdr.cmd, opcode,
8110                         cmd->cmd_status_drv);
8111                 return -EBUSY;
8112         }
8113
8114         cmd->sync_cmd = 0;
8115
8116         if (instance->unload == 1) {
8117                 dev_info(&instance->pdev->dev, "Driver unload is in progress "
8118                         "don't submit data to application\n");
8119                 goto out;
8120         }
8121         /*
8122          * copy out the kernel buffers to user buffers
8123          */
8124         for (i = 0; i < ioc->sge_count; i++) {
8125                 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
8126                                  ioc->sgl[i].iov_len)) {
8127                         error = -EFAULT;
8128                         goto out;
8129                 }
8130         }
8131
8132         /*
8133          * copy out the sense
8134          */
8135         if (ioc->sense_len) {
8136                 /*
8137                  * sense_ptr points to the location that has the user
8138                  * sense buffer address
8139                  */
8140                 sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw +
8141                                 ioc->sense_off);
8142
8143                 if (copy_to_user((void __user *)((unsigned long)
8144                                  get_unaligned((unsigned long *)sense_ptr)),
8145                                  sense, ioc->sense_len)) {
8146                         dev_err(&instance->pdev->dev, "Failed to copy out to user "
8147                                         "sense data\n");
8148                         error = -EFAULT;
8149                         goto out;
8150                 }
8151         }
8152
8153         /*
8154          * copy the status codes returned by the fw
8155          */
8156         if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
8157                          &cmd->frame->hdr.cmd_status, sizeof(u8))) {
8158                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error copying out cmd_status\n");
8159                 error = -EFAULT;
8160         }
8161
8162 out:
8163         if (sense) {
8164                 dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
8165                                     sense, sense_handle);
8166         }
8167
8168         for (i = 0; i < ioc->sge_count; i++) {
8169                 if (kbuff_arr[i]) {
8170                         if (instance->consistent_mask_64bit)
8171                                 dma_free_coherent(&instance->pdev->dev,
8172                                         le32_to_cpu(kern_sge64[i].length),
8173                                         kbuff_arr[i],
8174                                         le64_to_cpu(kern_sge64[i].phys_addr));
8175                         else
8176                                 dma_free_coherent(&instance->pdev->dev,
8177                                         le32_to_cpu(kern_sge32[i].length),
8178                                         kbuff_arr[i],
8179                                         le32_to_cpu(kern_sge32[i].phys_addr));
8180                         kbuff_arr[i] = NULL;
8181                 }
8182         }
8183
8184         megasas_return_cmd(instance, cmd);
8185         return error;
8186 }
8187
8188 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
8189 {
8190         struct megasas_iocpacket __user *user_ioc =
8191             (struct megasas_iocpacket __user *)arg;
8192         struct megasas_iocpacket *ioc;
8193         struct megasas_instance *instance;
8194         int error;
8195
8196         ioc = memdup_user(user_ioc, sizeof(*ioc));
8197         if (IS_ERR(ioc))
8198                 return PTR_ERR(ioc);
8199
8200         instance = megasas_lookup_instance(ioc->host_no);
8201         if (!instance) {
8202                 error = -ENODEV;
8203                 goto out_kfree_ioc;
8204         }
8205
8206         /* Block ioctls in VF mode */
8207         if (instance->requestorId && !allow_vf_ioctls) {
8208                 error = -ENODEV;
8209                 goto out_kfree_ioc;
8210         }
8211
8212         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
8213                 dev_err(&instance->pdev->dev, "Controller in crit error\n");
8214                 error = -ENODEV;
8215                 goto out_kfree_ioc;
8216         }
8217
8218         if (instance->unload == 1) {
8219                 error = -ENODEV;
8220                 goto out_kfree_ioc;
8221         }
8222
8223         if (down_interruptible(&instance->ioctl_sem)) {
8224                 error = -ERESTARTSYS;
8225                 goto out_kfree_ioc;
8226         }
8227
8228         if  (megasas_wait_for_adapter_operational(instance)) {
8229                 error = -ENODEV;
8230                 goto out_up;
8231         }
8232
8233         error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
8234 out_up:
8235         up(&instance->ioctl_sem);
8236
8237 out_kfree_ioc:
8238         kfree(ioc);
8239         return error;
8240 }
8241
8242 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
8243 {
8244         struct megasas_instance *instance;
8245         struct megasas_aen aen;
8246         int error;
8247
8248         if (file->private_data != file) {
8249                 printk(KERN_DEBUG "megasas: fasync_helper was not "
8250                        "called first\n");
8251                 return -EINVAL;
8252         }
8253
8254         if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
8255                 return -EFAULT;
8256
8257         instance = megasas_lookup_instance(aen.host_no);
8258
8259         if (!instance)
8260                 return -ENODEV;
8261
8262         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
8263                 return -ENODEV;
8264         }
8265
8266         if (instance->unload == 1) {
8267                 return -ENODEV;
8268         }
8269
8270         if  (megasas_wait_for_adapter_operational(instance))
8271                 return -ENODEV;
8272
8273         mutex_lock(&instance->reset_mutex);
8274         error = megasas_register_aen(instance, aen.seq_num,
8275                                      aen.class_locale_word);
8276         mutex_unlock(&instance->reset_mutex);
8277         return error;
8278 }
8279
8280 /**
8281  * megasas_mgmt_ioctl - char node ioctl entry point
8282  */
8283 static long
8284 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
8285 {
8286         switch (cmd) {
8287         case MEGASAS_IOC_FIRMWARE:
8288                 return megasas_mgmt_ioctl_fw(file, arg);
8289
8290         case MEGASAS_IOC_GET_AEN:
8291                 return megasas_mgmt_ioctl_aen(file, arg);
8292         }
8293
8294         return -ENOTTY;
8295 }
8296
8297 #ifdef CONFIG_COMPAT
8298 static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg)
8299 {
8300         struct compat_megasas_iocpacket __user *cioc =
8301             (struct compat_megasas_iocpacket __user *)arg;
8302         struct megasas_iocpacket __user *ioc =
8303             compat_alloc_user_space(sizeof(struct megasas_iocpacket));
8304         int i;
8305         int error = 0;
8306         compat_uptr_t ptr;
8307         u32 local_sense_off;
8308         u32 local_sense_len;
8309         u32 user_sense_off;
8310
8311         if (clear_user(ioc, sizeof(*ioc)))
8312                 return -EFAULT;
8313
8314         if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) ||
8315             copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) ||
8316             copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) ||
8317             copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) ||
8318             copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) ||
8319             copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32)))
8320                 return -EFAULT;
8321
8322         /*
8323          * The sense_ptr is used in megasas_mgmt_fw_ioctl only when
8324          * sense_len is not null, so prepare the 64bit value under
8325          * the same condition.
8326          */
8327         if (get_user(local_sense_off, &ioc->sense_off) ||
8328                 get_user(local_sense_len, &ioc->sense_len) ||
8329                 get_user(user_sense_off, &cioc->sense_off))
8330                 return -EFAULT;
8331
8332         if (local_sense_off != user_sense_off)
8333                 return -EINVAL;
8334
8335         if (local_sense_len) {
8336                 void __user **sense_ioc_ptr =
8337                         (void __user **)((u8 *)((unsigned long)&ioc->frame.raw) + local_sense_off);
8338                 compat_uptr_t *sense_cioc_ptr =
8339                         (compat_uptr_t *)(((unsigned long)&cioc->frame.raw) + user_sense_off);
8340                 if (get_user(ptr, sense_cioc_ptr) ||
8341                     put_user(compat_ptr(ptr), sense_ioc_ptr))
8342                         return -EFAULT;
8343         }
8344
8345         for (i = 0; i < MAX_IOCTL_SGE; i++) {
8346                 if (get_user(ptr, &cioc->sgl[i].iov_base) ||
8347                     put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) ||
8348                     copy_in_user(&ioc->sgl[i].iov_len,
8349                                  &cioc->sgl[i].iov_len, sizeof(compat_size_t)))
8350                         return -EFAULT;
8351         }
8352
8353         error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc);
8354
8355         if (copy_in_user(&cioc->frame.hdr.cmd_status,
8356                          &ioc->frame.hdr.cmd_status, sizeof(u8))) {
8357                 printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n");
8358                 return -EFAULT;
8359         }
8360         return error;
8361 }
8362
8363 static long
8364 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
8365                           unsigned long arg)
8366 {
8367         switch (cmd) {
8368         case MEGASAS_IOC_FIRMWARE32:
8369                 return megasas_mgmt_compat_ioctl_fw(file, arg);
8370         case MEGASAS_IOC_GET_AEN:
8371                 return megasas_mgmt_ioctl_aen(file, arg);
8372         }
8373
8374         return -ENOTTY;
8375 }
8376 #endif
8377
8378 /*
8379  * File operations structure for management interface
8380  */
8381 static const struct file_operations megasas_mgmt_fops = {
8382         .owner = THIS_MODULE,
8383         .open = megasas_mgmt_open,
8384         .fasync = megasas_mgmt_fasync,
8385         .unlocked_ioctl = megasas_mgmt_ioctl,
8386         .poll = megasas_mgmt_poll,
8387 #ifdef CONFIG_COMPAT
8388         .compat_ioctl = megasas_mgmt_compat_ioctl,
8389 #endif
8390         .llseek = noop_llseek,
8391 };
8392
8393 /*
8394  * PCI hotplug support registration structure
8395  */
8396 static struct pci_driver megasas_pci_driver = {
8397
8398         .name = "megaraid_sas",
8399         .id_table = megasas_pci_table,
8400         .probe = megasas_probe_one,
8401         .remove = megasas_detach_one,
8402         .suspend = megasas_suspend,
8403         .resume = megasas_resume,
8404         .shutdown = megasas_shutdown,
8405 };
8406
8407 /*
8408  * Sysfs driver attributes
8409  */
8410 static ssize_t version_show(struct device_driver *dd, char *buf)
8411 {
8412         return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
8413                         MEGASAS_VERSION);
8414 }
8415 static DRIVER_ATTR_RO(version);
8416
8417 static ssize_t release_date_show(struct device_driver *dd, char *buf)
8418 {
8419         return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n",
8420                 MEGASAS_RELDATE);
8421 }
8422 static DRIVER_ATTR_RO(release_date);
8423
8424 static ssize_t support_poll_for_event_show(struct device_driver *dd, char *buf)
8425 {
8426         return sprintf(buf, "%u\n", support_poll_for_event);
8427 }
8428 static DRIVER_ATTR_RO(support_poll_for_event);
8429
8430 static ssize_t support_device_change_show(struct device_driver *dd, char *buf)
8431 {
8432         return sprintf(buf, "%u\n", support_device_change);
8433 }
8434 static DRIVER_ATTR_RO(support_device_change);
8435
8436 static ssize_t dbg_lvl_show(struct device_driver *dd, char *buf)
8437 {
8438         return sprintf(buf, "%u\n", megasas_dbg_lvl);
8439 }
8440
8441 static ssize_t dbg_lvl_store(struct device_driver *dd, const char *buf,
8442                              size_t count)
8443 {
8444         int retval = count;
8445
8446         if (sscanf(buf, "%u", &megasas_dbg_lvl) < 1) {
8447                 printk(KERN_ERR "megasas: could not set dbg_lvl\n");
8448                 retval = -EINVAL;
8449         }
8450         return retval;
8451 }
8452 static DRIVER_ATTR_RW(dbg_lvl);
8453
8454 static ssize_t
8455 support_nvme_encapsulation_show(struct device_driver *dd, char *buf)
8456 {
8457         return sprintf(buf, "%u\n", support_nvme_encapsulation);
8458 }
8459
8460 static DRIVER_ATTR_RO(support_nvme_encapsulation);
8461
8462 static ssize_t
8463 support_pci_lane_margining_show(struct device_driver *dd, char *buf)
8464 {
8465         return sprintf(buf, "%u\n", support_pci_lane_margining);
8466 }
8467
8468 static DRIVER_ATTR_RO(support_pci_lane_margining);
8469
8470 static inline void megasas_remove_scsi_device(struct scsi_device *sdev)
8471 {
8472         sdev_printk(KERN_INFO, sdev, "SCSI device is removed\n");
8473         scsi_remove_device(sdev);
8474         scsi_device_put(sdev);
8475 }
8476
8477 /**
8478  * megasas_update_device_list - Update the PD and LD device list from FW
8479  *                              after an AEN event notification
8480  * @instance:                   Adapter soft state
8481  * @event_type:                 Indicates type of event (PD or LD event)
8482  *
8483  * @return:                     Success or failure
8484  *
8485  * Issue DCMDs to Firmware to update the internal device list in driver.
8486  * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination
8487  * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list.
8488  */
8489 static
8490 int megasas_update_device_list(struct megasas_instance *instance,
8491                                int event_type)
8492 {
8493         int dcmd_ret = DCMD_SUCCESS;
8494
8495         if (instance->enable_fw_dev_list) {
8496                 dcmd_ret = megasas_host_device_list_query(instance, false);
8497                 if (dcmd_ret != DCMD_SUCCESS)
8498                         goto out;
8499         } else {
8500                 if (event_type & SCAN_PD_CHANNEL) {
8501                         dcmd_ret = megasas_get_pd_list(instance);
8502
8503                         if (dcmd_ret != DCMD_SUCCESS)
8504                                 goto out;
8505                 }
8506
8507                 if (event_type & SCAN_VD_CHANNEL) {
8508                         if (!instance->requestorId ||
8509                             (instance->requestorId &&
8510                              megasas_get_ld_vf_affiliation(instance, 0))) {
8511                                 dcmd_ret = megasas_ld_list_query(instance,
8512                                                 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST);
8513                                 if (dcmd_ret != DCMD_SUCCESS)
8514                                         goto out;
8515                         }
8516                 }
8517         }
8518
8519 out:
8520         return dcmd_ret;
8521 }
8522
8523 /**
8524  * megasas_add_remove_devices - Add/remove devices to SCSI mid-layer
8525  *                              after an AEN event notification
8526  * @instance:                   Adapter soft state
8527  * @scan_type:                  Indicates type of devices (PD/LD) to add
8528  * @return                      void
8529  */
8530 static
8531 void megasas_add_remove_devices(struct megasas_instance *instance,
8532                                 int scan_type)
8533 {
8534         int i, j;
8535         u16 pd_index = 0;
8536         u16 ld_index = 0;
8537         u16 channel = 0, id = 0;
8538         struct Scsi_Host *host;
8539         struct scsi_device *sdev1;
8540         struct MR_HOST_DEVICE_LIST *targetid_list = NULL;
8541         struct MR_HOST_DEVICE_LIST_ENTRY *targetid_entry = NULL;
8542
8543         host = instance->host;
8544
8545         if (instance->enable_fw_dev_list) {
8546                 targetid_list = instance->host_device_list_buf;
8547                 for (i = 0; i < targetid_list->count; i++) {
8548                         targetid_entry = &targetid_list->host_device_list[i];
8549                         if (targetid_entry->flags.u.bits.is_sys_pd) {
8550                                 channel = le16_to_cpu(targetid_entry->target_id) /
8551                                                 MEGASAS_MAX_DEV_PER_CHANNEL;
8552                                 id = le16_to_cpu(targetid_entry->target_id) %
8553                                                 MEGASAS_MAX_DEV_PER_CHANNEL;
8554                         } else {
8555                                 channel = MEGASAS_MAX_PD_CHANNELS +
8556                                           (le16_to_cpu(targetid_entry->target_id) /
8557                                            MEGASAS_MAX_DEV_PER_CHANNEL);
8558                                 id = le16_to_cpu(targetid_entry->target_id) %
8559                                                 MEGASAS_MAX_DEV_PER_CHANNEL;
8560                         }
8561                         sdev1 = scsi_device_lookup(host, channel, id, 0);
8562                         if (!sdev1) {
8563                                 scsi_add_device(host, channel, id, 0);
8564                         } else {
8565                                 scsi_device_put(sdev1);
8566                         }
8567                 }
8568         }
8569
8570         if (scan_type & SCAN_PD_CHANNEL) {
8571                 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
8572                         for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
8573                                 pd_index = i * MEGASAS_MAX_DEV_PER_CHANNEL + j;
8574                                 sdev1 = scsi_device_lookup(host, i, j, 0);
8575                                 if (instance->pd_list[pd_index].driveState ==
8576                                                         MR_PD_STATE_SYSTEM) {
8577                                         if (!sdev1)
8578                                                 scsi_add_device(host, i, j, 0);
8579                                         else
8580                                                 scsi_device_put(sdev1);
8581                                 } else {
8582                                         if (sdev1)
8583                                                 megasas_remove_scsi_device(sdev1);
8584                                 }
8585                         }
8586                 }
8587         }
8588
8589         if (scan_type & SCAN_VD_CHANNEL) {
8590                 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
8591                         for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
8592                                 ld_index = (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
8593                                 sdev1 = scsi_device_lookup(host,
8594                                                 MEGASAS_MAX_PD_CHANNELS + i, j, 0);
8595                                 if (instance->ld_ids[ld_index] != 0xff) {
8596                                         if (!sdev1)
8597                                                 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
8598                                         else
8599                                                 scsi_device_put(sdev1);
8600                                 } else {
8601                                         if (sdev1)
8602                                                 megasas_remove_scsi_device(sdev1);
8603                                 }
8604                         }
8605                 }
8606         }
8607
8608 }
8609
8610 static void
8611 megasas_aen_polling(struct work_struct *work)
8612 {
8613         struct megasas_aen_event *ev =
8614                 container_of(work, struct megasas_aen_event, hotplug_work.work);
8615         struct megasas_instance *instance = ev->instance;
8616         union megasas_evt_class_locale class_locale;
8617         int event_type = 0;
8618         u32 seq_num;
8619         int error;
8620         u8  dcmd_ret = DCMD_SUCCESS;
8621
8622         if (!instance) {
8623                 printk(KERN_ERR "invalid instance!\n");
8624                 kfree(ev);
8625                 return;
8626         }
8627
8628         /* Don't run the event workqueue thread if OCR is running */
8629         mutex_lock(&instance->reset_mutex);
8630
8631         instance->ev = NULL;
8632         if (instance->evt_detail) {
8633                 megasas_decode_evt(instance);
8634
8635                 switch (le32_to_cpu(instance->evt_detail->code)) {
8636
8637                 case MR_EVT_PD_INSERTED:
8638                 case MR_EVT_PD_REMOVED:
8639                         event_type = SCAN_PD_CHANNEL;
8640                         break;
8641
8642                 case MR_EVT_LD_OFFLINE:
8643                 case MR_EVT_CFG_CLEARED:
8644                 case MR_EVT_LD_DELETED:
8645                 case MR_EVT_LD_CREATED:
8646                         event_type = SCAN_VD_CHANNEL;
8647                         break;
8648
8649                 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
8650                 case MR_EVT_FOREIGN_CFG_IMPORTED:
8651                 case MR_EVT_LD_STATE_CHANGE:
8652                         event_type = SCAN_PD_CHANNEL | SCAN_VD_CHANNEL;
8653                         dev_info(&instance->pdev->dev, "scanning for scsi%d...\n",
8654                                 instance->host->host_no);
8655                         break;
8656
8657                 case MR_EVT_CTRL_PROP_CHANGED:
8658                         dcmd_ret = megasas_get_ctrl_info(instance);
8659                         if (dcmd_ret == DCMD_SUCCESS &&
8660                             instance->snapdump_wait_time) {
8661                                 megasas_get_snapdump_properties(instance);
8662                                 dev_info(&instance->pdev->dev,
8663                                          "Snap dump wait time\t: %d\n",
8664                                          instance->snapdump_wait_time);
8665                         }
8666                         break;
8667                 default:
8668                         event_type = 0;
8669                         break;
8670                 }
8671         } else {
8672                 dev_err(&instance->pdev->dev, "invalid evt_detail!\n");
8673                 mutex_unlock(&instance->reset_mutex);
8674                 kfree(ev);
8675                 return;
8676         }
8677
8678         if (event_type)
8679                 dcmd_ret = megasas_update_device_list(instance, event_type);
8680
8681         mutex_unlock(&instance->reset_mutex);
8682
8683         if (event_type && dcmd_ret == DCMD_SUCCESS)
8684                 megasas_add_remove_devices(instance, event_type);
8685
8686         if (dcmd_ret == DCMD_SUCCESS)
8687                 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1;
8688         else
8689                 seq_num = instance->last_seq_num;
8690
8691         /* Register AEN with FW for latest sequence number plus 1 */
8692         class_locale.members.reserved = 0;
8693         class_locale.members.locale = MR_EVT_LOCALE_ALL;
8694         class_locale.members.class = MR_EVT_CLASS_DEBUG;
8695
8696         if (instance->aen_cmd != NULL) {
8697                 kfree(ev);
8698                 return;
8699         }
8700
8701         mutex_lock(&instance->reset_mutex);
8702         error = megasas_register_aen(instance, seq_num,
8703                                         class_locale.word);
8704         if (error)
8705                 dev_err(&instance->pdev->dev,
8706                         "register aen failed error %x\n", error);
8707
8708         mutex_unlock(&instance->reset_mutex);
8709         kfree(ev);
8710 }
8711
8712 /**
8713  * megasas_init - Driver load entry point
8714  */
8715 static int __init megasas_init(void)
8716 {
8717         int rval;
8718
8719         /*
8720          * Booted in kdump kernel, minimize memory footprints by
8721          * disabling few features
8722          */
8723         if (reset_devices) {
8724                 msix_vectors = 1;
8725                 rdpq_enable = 0;
8726                 dual_qdepth_disable = 1;
8727         }
8728
8729         /*
8730          * Announce driver version and other information
8731          */
8732         pr_info("megasas: %s\n", MEGASAS_VERSION);
8733
8734         spin_lock_init(&poll_aen_lock);
8735
8736         support_poll_for_event = 2;
8737         support_device_change = 1;
8738         support_nvme_encapsulation = true;
8739         support_pci_lane_margining = true;
8740
8741         memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
8742
8743         /*
8744          * Register character device node
8745          */
8746         rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
8747
8748         if (rval < 0) {
8749                 printk(KERN_DEBUG "megasas: failed to open device node\n");
8750                 return rval;
8751         }
8752
8753         megasas_mgmt_majorno = rval;
8754
8755         megasas_init_debugfs();
8756
8757         /*
8758          * Register ourselves as PCI hotplug module
8759          */
8760         rval = pci_register_driver(&megasas_pci_driver);
8761
8762         if (rval) {
8763                 printk(KERN_DEBUG "megasas: PCI hotplug registration failed \n");
8764                 goto err_pcidrv;
8765         }
8766
8767         if ((event_log_level < MFI_EVT_CLASS_DEBUG) ||
8768             (event_log_level > MFI_EVT_CLASS_DEAD)) {
8769                 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");
8770                 event_log_level = MFI_EVT_CLASS_CRITICAL;
8771         }
8772
8773         rval = driver_create_file(&megasas_pci_driver.driver,
8774                                   &driver_attr_version);
8775         if (rval)
8776                 goto err_dcf_attr_ver;
8777
8778         rval = driver_create_file(&megasas_pci_driver.driver,
8779                                   &driver_attr_release_date);
8780         if (rval)
8781                 goto err_dcf_rel_date;
8782
8783         rval = driver_create_file(&megasas_pci_driver.driver,
8784                                 &driver_attr_support_poll_for_event);
8785         if (rval)
8786                 goto err_dcf_support_poll_for_event;
8787
8788         rval = driver_create_file(&megasas_pci_driver.driver,
8789                                   &driver_attr_dbg_lvl);
8790         if (rval)
8791                 goto err_dcf_dbg_lvl;
8792         rval = driver_create_file(&megasas_pci_driver.driver,
8793                                 &driver_attr_support_device_change);
8794         if (rval)
8795                 goto err_dcf_support_device_change;
8796
8797         rval = driver_create_file(&megasas_pci_driver.driver,
8798                                   &driver_attr_support_nvme_encapsulation);
8799         if (rval)
8800                 goto err_dcf_support_nvme_encapsulation;
8801
8802         rval = driver_create_file(&megasas_pci_driver.driver,
8803                                   &driver_attr_support_pci_lane_margining);
8804         if (rval)
8805                 goto err_dcf_support_pci_lane_margining;
8806
8807         return rval;
8808
8809 err_dcf_support_pci_lane_margining:
8810         driver_remove_file(&megasas_pci_driver.driver,
8811                            &driver_attr_support_nvme_encapsulation);
8812
8813 err_dcf_support_nvme_encapsulation:
8814         driver_remove_file(&megasas_pci_driver.driver,
8815                            &driver_attr_support_device_change);
8816
8817 err_dcf_support_device_change:
8818         driver_remove_file(&megasas_pci_driver.driver,
8819                            &driver_attr_dbg_lvl);
8820 err_dcf_dbg_lvl:
8821         driver_remove_file(&megasas_pci_driver.driver,
8822                         &driver_attr_support_poll_for_event);
8823 err_dcf_support_poll_for_event:
8824         driver_remove_file(&megasas_pci_driver.driver,
8825                            &driver_attr_release_date);
8826 err_dcf_rel_date:
8827         driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
8828 err_dcf_attr_ver:
8829         pci_unregister_driver(&megasas_pci_driver);
8830 err_pcidrv:
8831         megasas_exit_debugfs();
8832         unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
8833         return rval;
8834 }
8835
8836 /**
8837  * megasas_exit - Driver unload entry point
8838  */
8839 static void __exit megasas_exit(void)
8840 {
8841         driver_remove_file(&megasas_pci_driver.driver,
8842                            &driver_attr_dbg_lvl);
8843         driver_remove_file(&megasas_pci_driver.driver,
8844                         &driver_attr_support_poll_for_event);
8845         driver_remove_file(&megasas_pci_driver.driver,
8846                         &driver_attr_support_device_change);
8847         driver_remove_file(&megasas_pci_driver.driver,
8848                            &driver_attr_release_date);
8849         driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
8850         driver_remove_file(&megasas_pci_driver.driver,
8851                            &driver_attr_support_nvme_encapsulation);
8852         driver_remove_file(&megasas_pci_driver.driver,
8853                            &driver_attr_support_pci_lane_margining);
8854
8855         pci_unregister_driver(&megasas_pci_driver);
8856         megasas_exit_debugfs();
8857         unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
8858 }
8859
8860 module_init(megasas_init);
8861 module_exit(megasas_exit);