drivers/scsi/megaraid/megaraid_sas_base.c

   1 /*
   2  *  Linux MegaRAID driver for SAS based RAID controllers
   3  *
   4  *  Copyright (c) 2003-2013  LSI Corporation
   5  *  Copyright (c) 2013-2014  Avago Technologies
   6  *
   7  *  This program is free software; you can redistribute it and/or
   8  *  modify it under the terms of the GNU General Public License
   9  *  as published by the Free Software Foundation; either version 2
  10  *  of the License, or (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19  *
  20  *  Authors: Avago Technologies
  21  *           Sreenivas Bagalkote
  22  *           Sumant Patro
  23  *           Bo Yang
  24  *           Adam Radford
  25  *           Kashyap Desai <kashyap.desai@avagotech.com>
  26  *           Sumit Saxena <sumit.saxena@avagotech.com>
  27  *
  28  *  Send feedback to: megaraidlinux.pdl@avagotech.com
  29  *
  30  *  Mail to: Avago Technologies, 350 West Trimble Road, Building 90,
  31  *  San Jose, California 95131
  32  */
  33
  34 #include <linux/kernel.h>
  35 #include <linux/types.h>
  36 #include <linux/pci.h>
  37 #include <linux/list.h>
  38 #include <linux/moduleparam.h>
  39 #include <linux/module.h>
  40 #include <linux/spinlock.h>
  41 #include <linux/interrupt.h>
  42 #include <linux/delay.h>
  43 #include <linux/uio.h>
  44 #include <linux/slab.h>
  45 #include <linux/uaccess.h>
  46 #include <asm/unaligned.h>
  47 #include <linux/fs.h>
  48 #include <linux/compat.h>
  49 #include <linux/blkdev.h>
  50 #include <linux/mutex.h>
  51 #include <linux/poll.h>
  52 #include <linux/vmalloc.h>
  53
  54 #include <scsi/scsi.h>
  55 #include <scsi/scsi_cmnd.h>
  56 #include <scsi/scsi_device.h>
  57 #include <scsi/scsi_host.h>
  58 #include <scsi/scsi_tcq.h>
  59 #include "megaraid_sas_fusion.h"
  60 #include "megaraid_sas.h"
  61
  62 /*
  63  * Number of sectors per IO command
  64  * Will be set in megasas_init_mfi if user does not provide
  65  */
  66 static unsigned int max_sectors;
  67 module_param_named(max_sectors, max_sectors, int, 0);
  68 MODULE_PARM_DESC(max_sectors,
  69         "Maximum number of sectors per IO command");
  70
  71 static int msix_disable;
  72 module_param(msix_disable, int, S_IRUGO);
  73 MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0");
  74
  75 static unsigned int msix_vectors;
  76 module_param(msix_vectors, int, S_IRUGO);
  77 MODULE_PARM_DESC(msix_vectors, "MSI-X max vector count. Default: Set by FW");
  78
  79 static int allow_vf_ioctls;
  80 module_param(allow_vf_ioctls, int, S_IRUGO);
  81 MODULE_PARM_DESC(allow_vf_ioctls, "Allow ioctls in SR-IOV VF mode. Default: 0");
  82
  83 static unsigned int throttlequeuedepth = MEGASAS_THROTTLE_QUEUE_DEPTH;
  84 module_param(throttlequeuedepth, int, S_IRUGO);
  85 MODULE_PARM_DESC(throttlequeuedepth,
  86         "Adapter queue depth when throttled due to I/O timeout. Default: 16");
  87
  88 unsigned int resetwaittime = MEGASAS_RESET_WAIT_TIME;
  89 module_param(resetwaittime, int, S_IRUGO);
  90 MODULE_PARM_DESC(resetwaittime, "Wait time in seconds after I/O timeout "
  91                  "before resetting adapter. Default: 180");
  92
  93 int smp_affinity_enable = 1;
  94 module_param(smp_affinity_enable, int, S_IRUGO);
  95 MODULE_PARM_DESC(smp_affinity_enable, "SMP affinity feature enable/disable Default: enable(1)");
  96
  97 int rdpq_enable = 1;
  98 module_param(rdpq_enable, int, S_IRUGO);
  99 MODULE_PARM_DESC(rdpq_enable, " Allocate reply queue in chunks for large queue depth enable/disable Default: disable(0)");
 100
 101 unsigned int dual_qdepth_disable;
 102 module_param(dual_qdepth_disable, int, S_IRUGO);
 103 MODULE_PARM_DESC(dual_qdepth_disable, "Disable dual queue depth feature. Default: 0");
 104
 105 unsigned int scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
 106 module_param(scmd_timeout, int, S_IRUGO);
 107 MODULE_PARM_DESC(scmd_timeout, "scsi command timeout (10-90s), default 90s. See megasas_reset_timer.");
 108
 109 MODULE_LICENSE("GPL");
 110 MODULE_VERSION(MEGASAS_VERSION);
 111 MODULE_AUTHOR("megaraidlinux.pdl@avagotech.com");
 112 MODULE_DESCRIPTION("Avago MegaRAID SAS Driver");
 113
 114 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
 115 static int megasas_get_pd_list(struct megasas_instance *instance);
 116 static int megasas_ld_list_query(struct megasas_instance *instance,
 117                                  u8 query_type);
 118 static int megasas_issue_init_mfi(struct megasas_instance *instance);
 119 static int megasas_register_aen(struct megasas_instance *instance,
 120                                 u32 seq_num, u32 class_locale_word);
 121 static void megasas_get_pd_info(struct megasas_instance *instance,
 122                                 struct scsi_device *sdev);
 123
 124 /*
 125  * PCI ID table for all supported controllers
 126  */
 127 static struct pci_device_id megasas_pci_table[] = {
 128
 129         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)},
 130         /* xscale IOP */
 131         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)},
 132         /* ppc IOP */
 133         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)},
 134         /* ppc IOP */
 135         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)},
 136         /* gen2*/
 137         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)},
 138         /* gen2*/
 139         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)},
 140         /* skinny*/
 141         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)},
 142         /* skinny*/
 143         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)},
 144         /* xscale IOP, vega */
 145         {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
 146         /* xscale IOP */
 147         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)},
 148         /* Fusion */
 149         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_PLASMA)},
 150         /* Plasma */
 151         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)},
 152         /* Invader */
 153         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FURY)},
 154         /* Fury */
 155         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER)},
 156         /* Intruder */
 157         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER_24)},
 158         /* Intruder 24 port*/
 159         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_52)},
 160         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_53)},
 161         /* VENTURA */
 162         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA)},
 163         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER)},
 164         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_HARPOON)},
 165         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_TOMCAT)},
 166         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA_4PORT)},
 167         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER_4PORT)},
 168         {}
 169 };
 170
 171 MODULE_DEVICE_TABLE(pci, megasas_pci_table);
 172
 173 static int megasas_mgmt_majorno;
 174 struct megasas_mgmt_info megasas_mgmt_info;
 175 static struct fasync_struct *megasas_async_queue;
 176 static DEFINE_MUTEX(megasas_async_queue_mutex);
 177
 178 static int megasas_poll_wait_aen;
 179 static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait);
 180 static u32 support_poll_for_event;
 181 u32 megasas_dbg_lvl;
 182 static u32 support_device_change;
 183 static bool support_nvme_encapsulation;
 184
 185 /* define lock for aen poll */
 186 spinlock_t poll_aen_lock;
 187
 188 void
 189 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
 190                      u8 alt_status);
 191 static u32
 192 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs);
 193 static int
 194 megasas_adp_reset_gen2(struct megasas_instance *instance,
 195                        struct megasas_register_set __iomem *reg_set);
 196 static irqreturn_t megasas_isr(int irq, void *devp);
 197 static u32
 198 megasas_init_adapter_mfi(struct megasas_instance *instance);
 199 u32
 200 megasas_build_and_issue_cmd(struct megasas_instance *instance,
 201                             struct scsi_cmnd *scmd);
 202 static void megasas_complete_cmd_dpc(unsigned long instance_addr);
 203 int
 204 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
 205         int seconds);
 206 void megasas_fusion_ocr_wq(struct work_struct *work);
 207 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
 208                                          int initial);
 209 static int
 210 megasas_set_dma_mask(struct megasas_instance *instance);
 211 static int
 212 megasas_alloc_ctrl_mem(struct megasas_instance *instance);
 213 static inline void
 214 megasas_free_ctrl_mem(struct megasas_instance *instance);
 215 static inline int
 216 megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance);
 217 static inline void
 218 megasas_free_ctrl_dma_buffers(struct megasas_instance *instance);
 219 static inline void
 220 megasas_init_ctrl_params(struct megasas_instance *instance);
 221
 222 /**
 223  * megasas_set_dma_settings -   Populate DMA address, length and flags for DCMDs
 224  * @instance:                   Adapter soft state
 225  * @dcmd:                       DCMD frame inside MFI command
 226  * @dma_addr:                   DMA address of buffer to be passed to FW
 227  * @dma_len:                    Length of DMA buffer to be passed to FW
 228  * @return:                     void
 229  */
 230 void megasas_set_dma_settings(struct megasas_instance *instance,
 231                               struct megasas_dcmd_frame *dcmd,
 232                               dma_addr_t dma_addr, u32 dma_len)
 233 {
 234         if (instance->consistent_mask_64bit) {
 235                 dcmd->sgl.sge64[0].phys_addr = cpu_to_le64(dma_addr);
 236                 dcmd->sgl.sge64[0].length = cpu_to_le32(dma_len);
 237                 dcmd->flags = cpu_to_le16(dcmd->flags | MFI_FRAME_SGL64);
 238
 239         } else {
 240                 dcmd->sgl.sge32[0].phys_addr =
 241                                 cpu_to_le32(lower_32_bits(dma_addr));
 242                 dcmd->sgl.sge32[0].length = cpu_to_le32(dma_len);
 243                 dcmd->flags = cpu_to_le16(dcmd->flags);
 244         }
 245 }
 246
 247 void
 248 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
 249 {
 250         instance->instancet->fire_cmd(instance,
 251                 cmd->frame_phys_addr, 0, instance->reg_set);
 252         return;
 253 }
 254
 255 /**
 256  * megasas_get_cmd -    Get a command from the free pool
 257  * @instance:           Adapter soft state
 258  *
 259  * Returns a free command from the pool
 260  */
 261 struct megasas_cmd *megasas_get_cmd(struct megasas_instance
 262                                                   *instance)
 263 {
 264         unsigned long flags;
 265         struct megasas_cmd *cmd = NULL;
 266
 267         spin_lock_irqsave(&instance->mfi_pool_lock, flags);
 268
 269         if (!list_empty(&instance->cmd_pool)) {
 270                 cmd = list_entry((&instance->cmd_pool)->next,
 271                                  struct megasas_cmd, list);
 272                 list_del_init(&cmd->list);
 273         } else {
 274                 dev_err(&instance->pdev->dev, "Command pool empty!\n");
 275         }
 276
 277         spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
 278         return cmd;
 279 }
 280
 281 /**
 282  * megasas_return_cmd - Return a cmd to free command pool
 283  * @instance:           Adapter soft state
 284  * @cmd:                Command packet to be returned to free command pool
 285  */
 286 void
 287 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
 288 {
 289         unsigned long flags;
 290         u32 blk_tags;
 291         struct megasas_cmd_fusion *cmd_fusion;
 292         struct fusion_context *fusion = instance->ctrl_context;
 293
 294         /* This flag is used only for fusion adapter.
 295          * Wait for Interrupt for Polled mode DCMD
 296          */
 297         if (cmd->flags & DRV_DCMD_POLLED_MODE)
 298                 return;
 299
 300         spin_lock_irqsave(&instance->mfi_pool_lock, flags);
 301
 302         if (fusion) {
 303                 blk_tags = instance->max_scsi_cmds + cmd->index;
 304                 cmd_fusion = fusion->cmd_list[blk_tags];
 305                 megasas_return_cmd_fusion(instance, cmd_fusion);
 306         }
 307         cmd->scmd = NULL;
 308         cmd->frame_count = 0;
 309         cmd->flags = 0;
 310         memset(cmd->frame, 0, instance->mfi_frame_size);
 311         cmd->frame->io.context = cpu_to_le32(cmd->index);
 312         if (!fusion && reset_devices)
 313                 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
 314         list_add(&cmd->list, (&instance->cmd_pool)->next);
 315
 316         spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
 317
 318 }
 319
 320 static const char *
 321 format_timestamp(uint32_t timestamp)
 322 {
 323         static char buffer[32];
 324
 325         if ((timestamp & 0xff000000) == 0xff000000)
 326                 snprintf(buffer, sizeof(buffer), "boot + %us", timestamp &
 327                 0x00ffffff);
 328         else
 329                 snprintf(buffer, sizeof(buffer), "%us", timestamp);
 330         return buffer;
 331 }
 332
 333 static const char *
 334 format_class(int8_t class)
 335 {
 336         static char buffer[6];
 337
 338         switch (class) {
 339         case MFI_EVT_CLASS_DEBUG:
 340                 return "debug";
 341         case MFI_EVT_CLASS_PROGRESS:
 342                 return "progress";
 343         case MFI_EVT_CLASS_INFO:
 344                 return "info";
 345         case MFI_EVT_CLASS_WARNING:
 346                 return "WARN";
 347         case MFI_EVT_CLASS_CRITICAL:
 348                 return "CRIT";
 349         case MFI_EVT_CLASS_FATAL:
 350                 return "FATAL";
 351         case MFI_EVT_CLASS_DEAD:
 352                 return "DEAD";
 353         default:
 354                 snprintf(buffer, sizeof(buffer), "%d", class);
 355                 return buffer;
 356         }
 357 }
 358
 359 /**
 360   * megasas_decode_evt: Decode FW AEN event and print critical event
 361   * for information.
 362   * @instance:                  Adapter soft state
 363   */
 364 static void
 365 megasas_decode_evt(struct megasas_instance *instance)
 366 {
 367         struct megasas_evt_detail *evt_detail = instance->evt_detail;
 368         union megasas_evt_class_locale class_locale;
 369         class_locale.word = le32_to_cpu(evt_detail->cl.word);
 370
 371         if (class_locale.members.class >= MFI_EVT_CLASS_CRITICAL)
 372                 dev_info(&instance->pdev->dev, "%d (%s/0x%04x/%s) - %s\n",
 373                         le32_to_cpu(evt_detail->seq_num),
 374                         format_timestamp(le32_to_cpu(evt_detail->time_stamp)),
 375                         (class_locale.members.locale),
 376                         format_class(class_locale.members.class),
 377                         evt_detail->description);
 378 }
 379
 380 /**
 381 *       The following functions are defined for xscale
 382 *       (deviceid : 1064R, PERC5) controllers
 383 */
 384
 385 /**
 386  * megasas_enable_intr_xscale - Enables interrupts
 387  * @regs:                       MFI register set
 388  */
 389 static inline void
 390 megasas_enable_intr_xscale(struct megasas_instance *instance)
 391 {
 392         struct megasas_register_set __iomem *regs;
 393
 394         regs = instance->reg_set;
 395         writel(0, &(regs)->outbound_intr_mask);
 396
 397         /* Dummy readl to force pci flush */
 398         readl(&regs->outbound_intr_mask);
 399 }
 400
 401 /**
 402  * megasas_disable_intr_xscale -Disables interrupt
 403  * @regs:                       MFI register set
 404  */
 405 static inline void
 406 megasas_disable_intr_xscale(struct megasas_instance *instance)
 407 {
 408         struct megasas_register_set __iomem *regs;
 409         u32 mask = 0x1f;
 410
 411         regs = instance->reg_set;
 412         writel(mask, &regs->outbound_intr_mask);
 413         /* Dummy readl to force pci flush */
 414         readl(&regs->outbound_intr_mask);
 415 }
 416
 417 /**
 418  * megasas_read_fw_status_reg_xscale - returns the current FW status value
 419  * @regs:                       MFI register set
 420  */
 421 static u32
 422 megasas_read_fw_status_reg_xscale(struct megasas_register_set __iomem * regs)
 423 {
 424         return readl(&(regs)->outbound_msg_0);
 425 }
 426 /**
 427  * megasas_clear_interrupt_xscale -     Check & clear interrupt
 428  * @regs:                               MFI register set
 429  */
 430 static int
 431 megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs)
 432 {
 433         u32 status;
 434         u32 mfiStatus = 0;
 435
 436         /*
 437          * Check if it is our interrupt
 438          */
 439         status = readl(&regs->outbound_intr_status);
 440
 441         if (status & MFI_OB_INTR_STATUS_MASK)
 442                 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
 443         if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT)
 444                 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
 445
 446         /*
 447          * Clear the interrupt by writing back the same value
 448          */
 449         if (mfiStatus)
 450                 writel(status, &regs->outbound_intr_status);
 451
 452         /* Dummy readl to force pci flush */
 453         readl(&regs->outbound_intr_status);
 454
 455         return mfiStatus;
 456 }
 457
 458 /**
 459  * megasas_fire_cmd_xscale -    Sends command to the FW
 460  * @frame_phys_addr :           Physical address of cmd
 461  * @frame_count :               Number of frames for the command
 462  * @regs :                      MFI register set
 463  */
 464 static inline void
 465 megasas_fire_cmd_xscale(struct megasas_instance *instance,
 466                 dma_addr_t frame_phys_addr,
 467                 u32 frame_count,
 468                 struct megasas_register_set __iomem *regs)
 469 {
 470         unsigned long flags;
 471
 472         spin_lock_irqsave(&instance->hba_lock, flags);
 473         writel((frame_phys_addr >> 3)|(frame_count),
 474                &(regs)->inbound_queue_port);
 475         spin_unlock_irqrestore(&instance->hba_lock, flags);
 476 }
 477
 478 /**
 479  * megasas_adp_reset_xscale -  For controller reset
 480  * @regs:                              MFI register set
 481  */
 482 static int
 483 megasas_adp_reset_xscale(struct megasas_instance *instance,
 484         struct megasas_register_set __iomem *regs)
 485 {
 486         u32 i;
 487         u32 pcidata;
 488
 489         writel(MFI_ADP_RESET, &regs->inbound_doorbell);
 490
 491         for (i = 0; i < 3; i++)
 492                 msleep(1000); /* sleep for 3 secs */
 493         pcidata  = 0;
 494         pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata);
 495         dev_notice(&instance->pdev->dev, "pcidata = %x\n", pcidata);
 496         if (pcidata & 0x2) {
 497                 dev_notice(&instance->pdev->dev, "mfi 1068 offset read=%x\n", pcidata);
 498                 pcidata &= ~0x2;
 499                 pci_write_config_dword(instance->pdev,
 500                                 MFI_1068_PCSR_OFFSET, pcidata);
 501
 502                 for (i = 0; i < 2; i++)
 503                         msleep(1000); /* need to wait 2 secs again */
 504
 505                 pcidata  = 0;
 506                 pci_read_config_dword(instance->pdev,
 507                                 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata);
 508                 dev_notice(&instance->pdev->dev, "1068 offset handshake read=%x\n", pcidata);
 509                 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) {
 510                         dev_notice(&instance->pdev->dev, "1068 offset pcidt=%x\n", pcidata);
 511                         pcidata = 0;
 512                         pci_write_config_dword(instance->pdev,
 513                                 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata);
 514                 }
 515         }
 516         return 0;
 517 }
 518
 519 /**
 520  * megasas_check_reset_xscale - For controller reset check
 521  * @regs:                               MFI register set
 522  */
 523 static int
 524 megasas_check_reset_xscale(struct megasas_instance *instance,
 525                 struct megasas_register_set __iomem *regs)
 526 {
 527         if ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) &&
 528             (le32_to_cpu(*instance->consumer) ==
 529                 MEGASAS_ADPRESET_INPROG_SIGN))
 530                 return 1;
 531         return 0;
 532 }
 533
 534 static struct megasas_instance_template megasas_instance_template_xscale = {
 535
 536         .fire_cmd = megasas_fire_cmd_xscale,
 537         .enable_intr = megasas_enable_intr_xscale,
 538         .disable_intr = megasas_disable_intr_xscale,
 539         .clear_intr = megasas_clear_intr_xscale,
 540         .read_fw_status_reg = megasas_read_fw_status_reg_xscale,
 541         .adp_reset = megasas_adp_reset_xscale,
 542         .check_reset = megasas_check_reset_xscale,
 543         .service_isr = megasas_isr,
 544         .tasklet = megasas_complete_cmd_dpc,
 545         .init_adapter = megasas_init_adapter_mfi,
 546         .build_and_issue_cmd = megasas_build_and_issue_cmd,
 547         .issue_dcmd = megasas_issue_dcmd,
 548 };
 549
 550 /**
 551 *       This is the end of set of functions & definitions specific
 552 *       to xscale (deviceid : 1064R, PERC5) controllers
 553 */
 554
 555 /**
 556 *       The following functions are defined for ppc (deviceid : 0x60)
 557 *       controllers
 558 */
 559
 560 /**
 561  * megasas_enable_intr_ppc -    Enables interrupts
 562  * @regs:                       MFI register set
 563  */
 564 static inline void
 565 megasas_enable_intr_ppc(struct megasas_instance *instance)
 566 {
 567         struct megasas_register_set __iomem *regs;
 568
 569         regs = instance->reg_set;
 570         writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
 571
 572         writel(~0x80000000, &(regs)->outbound_intr_mask);
 573
 574         /* Dummy readl to force pci flush */
 575         readl(&regs->outbound_intr_mask);
 576 }
 577
 578 /**
 579  * megasas_disable_intr_ppc -   Disable interrupt
 580  * @regs:                       MFI register set
 581  */
 582 static inline void
 583 megasas_disable_intr_ppc(struct megasas_instance *instance)
 584 {
 585         struct megasas_register_set __iomem *regs;
 586         u32 mask = 0xFFFFFFFF;
 587
 588         regs = instance->reg_set;
 589         writel(mask, &regs->outbound_intr_mask);
 590         /* Dummy readl to force pci flush */
 591         readl(&regs->outbound_intr_mask);
 592 }
 593
 594 /**
 595  * megasas_read_fw_status_reg_ppc - returns the current FW status value
 596  * @regs:                       MFI register set
 597  */
 598 static u32
 599 megasas_read_fw_status_reg_ppc(struct megasas_register_set __iomem * regs)
 600 {
 601         return readl(&(regs)->outbound_scratch_pad);
 602 }
 603
 604 /**
 605  * megasas_clear_interrupt_ppc -        Check & clear interrupt
 606  * @regs:                               MFI register set
 607  */
 608 static int
 609 megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs)
 610 {
 611         u32 status, mfiStatus = 0;
 612
 613         /*
 614          * Check if it is our interrupt
 615          */
 616         status = readl(&regs->outbound_intr_status);
 617
 618         if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT)
 619                 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
 620
 621         if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT)
 622                 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
 623
 624         /*
 625          * Clear the interrupt by writing back the same value
 626          */
 627         writel(status, &regs->outbound_doorbell_clear);
 628
 629         /* Dummy readl to force pci flush */
 630         readl(&regs->outbound_doorbell_clear);
 631
 632         return mfiStatus;
 633 }
 634
 635 /**
 636  * megasas_fire_cmd_ppc -       Sends command to the FW
 637  * @frame_phys_addr :           Physical address of cmd
 638  * @frame_count :               Number of frames for the command
 639  * @regs :                      MFI register set
 640  */
 641 static inline void
 642 megasas_fire_cmd_ppc(struct megasas_instance *instance,
 643                 dma_addr_t frame_phys_addr,
 644                 u32 frame_count,
 645                 struct megasas_register_set __iomem *regs)
 646 {
 647         unsigned long flags;
 648
 649         spin_lock_irqsave(&instance->hba_lock, flags);
 650         writel((frame_phys_addr | (frame_count<<1))|1,
 651                         &(regs)->inbound_queue_port);
 652         spin_unlock_irqrestore(&instance->hba_lock, flags);
 653 }
 654
 655 /**
 656  * megasas_check_reset_ppc -    For controller reset check
 657  * @regs:                               MFI register set
 658  */
 659 static int
 660 megasas_check_reset_ppc(struct megasas_instance *instance,
 661                         struct megasas_register_set __iomem *regs)
 662 {
 663         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
 664                 return 1;
 665
 666         return 0;
 667 }
 668
 669 static struct megasas_instance_template megasas_instance_template_ppc = {
 670
 671         .fire_cmd = megasas_fire_cmd_ppc,
 672         .enable_intr = megasas_enable_intr_ppc,
 673         .disable_intr = megasas_disable_intr_ppc,
 674         .clear_intr = megasas_clear_intr_ppc,
 675         .read_fw_status_reg = megasas_read_fw_status_reg_ppc,
 676         .adp_reset = megasas_adp_reset_xscale,
 677         .check_reset = megasas_check_reset_ppc,
 678         .service_isr = megasas_isr,
 679         .tasklet = megasas_complete_cmd_dpc,
 680         .init_adapter = megasas_init_adapter_mfi,
 681         .build_and_issue_cmd = megasas_build_and_issue_cmd,
 682         .issue_dcmd = megasas_issue_dcmd,
 683 };
 684
 685 /**
 686  * megasas_enable_intr_skinny - Enables interrupts
 687  * @regs:                       MFI register set
 688  */
 689 static inline void
 690 megasas_enable_intr_skinny(struct megasas_instance *instance)
 691 {
 692         struct megasas_register_set __iomem *regs;
 693
 694         regs = instance->reg_set;
 695         writel(0xFFFFFFFF, &(regs)->outbound_intr_mask);
 696
 697         writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
 698
 699         /* Dummy readl to force pci flush */
 700         readl(&regs->outbound_intr_mask);
 701 }
 702
 703 /**
 704  * megasas_disable_intr_skinny -        Disables interrupt
 705  * @regs:                       MFI register set
 706  */
 707 static inline void
 708 megasas_disable_intr_skinny(struct megasas_instance *instance)
 709 {
 710         struct megasas_register_set __iomem *regs;
 711         u32 mask = 0xFFFFFFFF;
 712
 713         regs = instance->reg_set;
 714         writel(mask, &regs->outbound_intr_mask);
 715         /* Dummy readl to force pci flush */
 716         readl(&regs->outbound_intr_mask);
 717 }
 718
 719 /**
 720  * megasas_read_fw_status_reg_skinny - returns the current FW status value
 721  * @regs:                       MFI register set
 722  */
 723 static u32
 724 megasas_read_fw_status_reg_skinny(struct megasas_register_set __iomem *regs)
 725 {
 726         return readl(&(regs)->outbound_scratch_pad);
 727 }
 728
 729 /**
 730  * megasas_clear_interrupt_skinny -     Check & clear interrupt
 731  * @regs:                               MFI register set
 732  */
 733 static int
 734 megasas_clear_intr_skinny(struct megasas_register_set __iomem *regs)
 735 {
 736         u32 status;
 737         u32 mfiStatus = 0;
 738
 739         /*
 740          * Check if it is our interrupt
 741          */
 742         status = readl(&regs->outbound_intr_status);
 743
 744         if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) {
 745                 return 0;
 746         }
 747
 748         /*
 749          * Check if it is our interrupt
 750          */
 751         if ((megasas_read_fw_status_reg_skinny(regs) & MFI_STATE_MASK) ==
 752             MFI_STATE_FAULT) {
 753                 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
 754         } else
 755                 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
 756
 757         /*
 758          * Clear the interrupt by writing back the same value
 759          */
 760         writel(status, &regs->outbound_intr_status);
 761
 762         /*
 763          * dummy read to flush PCI
 764          */
 765         readl(&regs->outbound_intr_status);
 766
 767         return mfiStatus;
 768 }
 769
 770 /**
 771  * megasas_fire_cmd_skinny -    Sends command to the FW
 772  * @frame_phys_addr :           Physical address of cmd
 773  * @frame_count :               Number of frames for the command
 774  * @regs :                      MFI register set
 775  */
 776 static inline void
 777 megasas_fire_cmd_skinny(struct megasas_instance *instance,
 778                         dma_addr_t frame_phys_addr,
 779                         u32 frame_count,
 780                         struct megasas_register_set __iomem *regs)
 781 {
 782         unsigned long flags;
 783
 784         spin_lock_irqsave(&instance->hba_lock, flags);
 785         writel(upper_32_bits(frame_phys_addr),
 786                &(regs)->inbound_high_queue_port);
 787         writel((lower_32_bits(frame_phys_addr) | (frame_count<<1))|1,
 788                &(regs)->inbound_low_queue_port);
 789         mmiowb();
 790         spin_unlock_irqrestore(&instance->hba_lock, flags);
 791 }
 792
 793 /**
 794  * megasas_check_reset_skinny - For controller reset check
 795  * @regs:                               MFI register set
 796  */
 797 static int
 798 megasas_check_reset_skinny(struct megasas_instance *instance,
 799                                 struct megasas_register_set __iomem *regs)
 800 {
 801         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
 802                 return 1;
 803
 804         return 0;
 805 }
 806
 807 static struct megasas_instance_template megasas_instance_template_skinny = {
 808
 809         .fire_cmd = megasas_fire_cmd_skinny,
 810         .enable_intr = megasas_enable_intr_skinny,
 811         .disable_intr = megasas_disable_intr_skinny,
 812         .clear_intr = megasas_clear_intr_skinny,
 813         .read_fw_status_reg = megasas_read_fw_status_reg_skinny,
 814         .adp_reset = megasas_adp_reset_gen2,
 815         .check_reset = megasas_check_reset_skinny,
 816         .service_isr = megasas_isr,
 817         .tasklet = megasas_complete_cmd_dpc,
 818         .init_adapter = megasas_init_adapter_mfi,
 819         .build_and_issue_cmd = megasas_build_and_issue_cmd,
 820         .issue_dcmd = megasas_issue_dcmd,
 821 };
 822
 823
 824 /**
 825 *       The following functions are defined for gen2 (deviceid : 0x78 0x79)
 826 *       controllers
 827 */
 828
 829 /**
 830  * megasas_enable_intr_gen2 -  Enables interrupts
 831  * @regs:                      MFI register set
 832  */
 833 static inline void
 834 megasas_enable_intr_gen2(struct megasas_instance *instance)
 835 {
 836         struct megasas_register_set __iomem *regs;
 837
 838         regs = instance->reg_set;
 839         writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
 840
 841         /* write ~0x00000005 (4 & 1) to the intr mask*/
 842         writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
 843
 844         /* Dummy readl to force pci flush */
 845         readl(&regs->outbound_intr_mask);
 846 }
 847
 848 /**
 849  * megasas_disable_intr_gen2 - Disables interrupt
 850  * @regs:                      MFI register set
 851  */
 852 static inline void
 853 megasas_disable_intr_gen2(struct megasas_instance *instance)
 854 {
 855         struct megasas_register_set __iomem *regs;
 856         u32 mask = 0xFFFFFFFF;
 857
 858         regs = instance->reg_set;
 859         writel(mask, &regs->outbound_intr_mask);
 860         /* Dummy readl to force pci flush */
 861         readl(&regs->outbound_intr_mask);
 862 }
 863
 864 /**
 865  * megasas_read_fw_status_reg_gen2 - returns the current FW status value
 866  * @regs:                      MFI register set
 867  */
 868 static u32
 869 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs)
 870 {
 871         return readl(&(regs)->outbound_scratch_pad);
 872 }
 873
 874 /**
 875  * megasas_clear_interrupt_gen2 -      Check & clear interrupt
 876  * @regs:                              MFI register set
 877  */
 878 static int
 879 megasas_clear_intr_gen2(struct megasas_register_set __iomem *regs)
 880 {
 881         u32 status;
 882         u32 mfiStatus = 0;
 883
 884         /*
 885          * Check if it is our interrupt
 886          */
 887         status = readl(&regs->outbound_intr_status);
 888
 889         if (status & MFI_INTR_FLAG_REPLY_MESSAGE) {
 890                 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
 891         }
 892         if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) {
 893                 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
 894         }
 895
 896         /*
 897          * Clear the interrupt by writing back the same value
 898          */
 899         if (mfiStatus)
 900                 writel(status, &regs->outbound_doorbell_clear);
 901
 902         /* Dummy readl to force pci flush */
 903         readl(&regs->outbound_intr_status);
 904
 905         return mfiStatus;
 906 }
 907 /**
 908  * megasas_fire_cmd_gen2 -     Sends command to the FW
 909  * @frame_phys_addr :          Physical address of cmd
 910  * @frame_count :              Number of frames for the command
 911  * @regs :                     MFI register set
 912  */
 913 static inline void
 914 megasas_fire_cmd_gen2(struct megasas_instance *instance,
 915                         dma_addr_t frame_phys_addr,
 916                         u32 frame_count,
 917                         struct megasas_register_set __iomem *regs)
 918 {
 919         unsigned long flags;
 920
 921         spin_lock_irqsave(&instance->hba_lock, flags);
 922         writel((frame_phys_addr | (frame_count<<1))|1,
 923                         &(regs)->inbound_queue_port);
 924         spin_unlock_irqrestore(&instance->hba_lock, flags);
 925 }
 926
 927 /**
 928  * megasas_adp_reset_gen2 -     For controller reset
 929  * @regs:                               MFI register set
 930  */
 931 static int
 932 megasas_adp_reset_gen2(struct megasas_instance *instance,
 933                         struct megasas_register_set __iomem *reg_set)
 934 {
 935         u32 retry = 0 ;
 936         u32 HostDiag;
 937         u32 __iomem *seq_offset = &reg_set->seq_offset;
 938         u32 __iomem *hostdiag_offset = &reg_set->host_diag;
 939
 940         if (instance->instancet == &megasas_instance_template_skinny) {
 941                 seq_offset = &reg_set->fusion_seq_offset;
 942                 hostdiag_offset = &reg_set->fusion_host_diag;
 943         }
 944
 945         writel(0, seq_offset);
 946         writel(4, seq_offset);
 947         writel(0xb, seq_offset);
 948         writel(2, seq_offset);
 949         writel(7, seq_offset);
 950         writel(0xd, seq_offset);
 951
 952         msleep(1000);
 953
 954         HostDiag = (u32)readl(hostdiag_offset);
 955
 956         while (!(HostDiag & DIAG_WRITE_ENABLE)) {
 957                 msleep(100);
 958                 HostDiag = (u32)readl(hostdiag_offset);
 959                 dev_notice(&instance->pdev->dev, "RESETGEN2: retry=%x, hostdiag=%x\n",
 960                                         retry, HostDiag);
 961
 962                 if (retry++ >= 100)
 963                         return 1;
 964
 965         }
 966
 967         dev_notice(&instance->pdev->dev, "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag);
 968
 969         writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset);
 970
 971         ssleep(10);
 972
 973         HostDiag = (u32)readl(hostdiag_offset);
 974         while (HostDiag & DIAG_RESET_ADAPTER) {
 975                 msleep(100);
 976                 HostDiag = (u32)readl(hostdiag_offset);
 977                 dev_notice(&instance->pdev->dev, "RESET_GEN2: retry=%x, hostdiag=%x\n",
 978                                 retry, HostDiag);
 979
 980                 if (retry++ >= 1000)
 981                         return 1;
 982
 983         }
 984         return 0;
 985 }
 986
 987 /**
 988  * megasas_check_reset_gen2 -   For controller reset check
 989  * @regs:                               MFI register set
 990  */
 991 static int
 992 megasas_check_reset_gen2(struct megasas_instance *instance,
 993                 struct megasas_register_set __iomem *regs)
 994 {
 995         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
 996                 return 1;
 997
 998         return 0;
 999 }
1000
1001 static struct megasas_instance_template megasas_instance_template_gen2 = {
1002
1003         .fire_cmd = megasas_fire_cmd_gen2,
1004         .enable_intr = megasas_enable_intr_gen2,
1005         .disable_intr = megasas_disable_intr_gen2,
1006         .clear_intr = megasas_clear_intr_gen2,
1007         .read_fw_status_reg = megasas_read_fw_status_reg_gen2,
1008         .adp_reset = megasas_adp_reset_gen2,
1009         .check_reset = megasas_check_reset_gen2,
1010         .service_isr = megasas_isr,
1011         .tasklet = megasas_complete_cmd_dpc,
1012         .init_adapter = megasas_init_adapter_mfi,
1013         .build_and_issue_cmd = megasas_build_and_issue_cmd,
1014         .issue_dcmd = megasas_issue_dcmd,
1015 };
1016
1017 /**
1018 *       This is the end of set of functions & definitions
1019 *       specific to gen2 (deviceid : 0x78, 0x79) controllers
1020 */
1021
1022 /*
1023  * Template added for TB (Fusion)
1024  */
1025 extern struct megasas_instance_template megasas_instance_template_fusion;
1026
1027 /**
1028  * megasas_issue_polled -       Issues a polling command
1029  * @instance:                   Adapter soft state
1030  * @cmd:                        Command packet to be issued
1031  *
1032  * For polling, MFI requires the cmd_status to be set to MFI_STAT_INVALID_STATUS before posting.
1033  */
1034 int
1035 megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
1036 {
1037         struct megasas_header *frame_hdr = &cmd->frame->hdr;
1038
1039         frame_hdr->cmd_status = MFI_STAT_INVALID_STATUS;
1040         frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
1041
1042         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1043                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1044                         __func__, __LINE__);
1045                 return DCMD_NOT_FIRED;
1046         }
1047
1048         instance->instancet->issue_dcmd(instance, cmd);
1049
1050         return wait_and_poll(instance, cmd, instance->requestorId ?
1051                         MEGASAS_ROUTINE_WAIT_TIME_VF : MFI_IO_TIMEOUT_SECS);
1052 }
1053
1054 /**
1055  * megasas_issue_blocked_cmd -  Synchronous wrapper around regular FW cmds
1056  * @instance:                   Adapter soft state
1057  * @cmd:                        Command to be issued
1058  * @timeout:                    Timeout in seconds
1059  *
1060  * This function waits on an event for the command to be returned from ISR.
1061  * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1062  * Used to issue ioctl commands.
1063  */
1064 int
1065 megasas_issue_blocked_cmd(struct megasas_instance *instance,
1066                           struct megasas_cmd *cmd, int timeout)
1067 {
1068         int ret = 0;
1069         cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
1070
1071         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1072                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1073                         __func__, __LINE__);
1074                 return DCMD_NOT_FIRED;
1075         }
1076
1077         instance->instancet->issue_dcmd(instance, cmd);
1078
1079         if (timeout) {
1080                 ret = wait_event_timeout(instance->int_cmd_wait_q,
1081                                 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS, timeout * HZ);
1082                 if (!ret) {
1083                         dev_err(&instance->pdev->dev, "Failed from %s %d DCMD Timed out\n",
1084                                 __func__, __LINE__);
1085                         return DCMD_TIMEOUT;
1086                 }
1087         } else
1088                 wait_event(instance->int_cmd_wait_q,
1089                                 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS);
1090
1091         return (cmd->cmd_status_drv == MFI_STAT_OK) ?
1092                 DCMD_SUCCESS : DCMD_FAILED;
1093 }
1094
1095 /**
1096  * megasas_issue_blocked_abort_cmd -    Aborts previously issued cmd
1097  * @instance:                           Adapter soft state
1098  * @cmd_to_abort:                       Previously issued cmd to be aborted
1099  * @timeout:                            Timeout in seconds
1100  *
1101  * MFI firmware can abort previously issued AEN comamnd (automatic event
1102  * notification). The megasas_issue_blocked_abort_cmd() issues such abort
1103  * cmd and waits for return status.
1104  * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1105  */
1106 static int
1107 megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
1108                                 struct megasas_cmd *cmd_to_abort, int timeout)
1109 {
1110         struct megasas_cmd *cmd;
1111         struct megasas_abort_frame *abort_fr;
1112         int ret = 0;
1113
1114         cmd = megasas_get_cmd(instance);
1115
1116         if (!cmd)
1117                 return -1;
1118
1119         abort_fr = &cmd->frame->abort;
1120
1121         /*
1122          * Prepare and issue the abort frame
1123          */
1124         abort_fr->cmd = MFI_CMD_ABORT;
1125         abort_fr->cmd_status = MFI_STAT_INVALID_STATUS;
1126         abort_fr->flags = cpu_to_le16(0);
1127         abort_fr->abort_context = cpu_to_le32(cmd_to_abort->index);
1128         abort_fr->abort_mfi_phys_addr_lo =
1129                 cpu_to_le32(lower_32_bits(cmd_to_abort->frame_phys_addr));
1130         abort_fr->abort_mfi_phys_addr_hi =
1131                 cpu_to_le32(upper_32_bits(cmd_to_abort->frame_phys_addr));
1132
1133         cmd->sync_cmd = 1;
1134         cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
1135
1136         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1137                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1138                         __func__, __LINE__);
1139                 return DCMD_NOT_FIRED;
1140         }
1141
1142         instance->instancet->issue_dcmd(instance, cmd);
1143
1144         if (timeout) {
1145                 ret = wait_event_timeout(instance->abort_cmd_wait_q,
1146                                 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS, timeout * HZ);
1147                 if (!ret) {
1148                         dev_err(&instance->pdev->dev, "Failed from %s %d Abort Timed out\n",
1149                                 __func__, __LINE__);
1150                         return DCMD_TIMEOUT;
1151                 }
1152         } else
1153                 wait_event(instance->abort_cmd_wait_q,
1154                                 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS);
1155
1156         cmd->sync_cmd = 0;
1157
1158         megasas_return_cmd(instance, cmd);
1159         return (cmd->cmd_status_drv == MFI_STAT_OK) ?
1160                 DCMD_SUCCESS : DCMD_FAILED;
1161 }
1162
1163 /**
1164  * megasas_make_sgl32 - Prepares 32-bit SGL
1165  * @instance:           Adapter soft state
1166  * @scp:                SCSI command from the mid-layer
1167  * @mfi_sgl:            SGL to be filled in
1168  *
1169  * If successful, this function returns the number of SG elements. Otherwise,
1170  * it returnes -1.
1171  */
1172 static int
1173 megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp,
1174                    union megasas_sgl *mfi_sgl)
1175 {
1176         int i;
1177         int sge_count;
1178         struct scatterlist *os_sgl;
1179
1180         sge_count = scsi_dma_map(scp);
1181         BUG_ON(sge_count < 0);
1182
1183         if (sge_count) {
1184                 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1185                         mfi_sgl->sge32[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1186                         mfi_sgl->sge32[i].phys_addr = cpu_to_le32(sg_dma_address(os_sgl));
1187                 }
1188         }
1189         return sge_count;
1190 }
1191
1192 /**
1193  * megasas_make_sgl64 - Prepares 64-bit SGL
1194  * @instance:           Adapter soft state
1195  * @scp:                SCSI command from the mid-layer
1196  * @mfi_sgl:            SGL to be filled in
1197  *
1198  * If successful, this function returns the number of SG elements. Otherwise,
1199  * it returnes -1.
1200  */
1201 static int
1202 megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp,
1203                    union megasas_sgl *mfi_sgl)
1204 {
1205         int i;
1206         int sge_count;
1207         struct scatterlist *os_sgl;
1208
1209         sge_count = scsi_dma_map(scp);
1210         BUG_ON(sge_count < 0);
1211
1212         if (sge_count) {
1213                 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1214                         mfi_sgl->sge64[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1215                         mfi_sgl->sge64[i].phys_addr = cpu_to_le64(sg_dma_address(os_sgl));
1216                 }
1217         }
1218         return sge_count;
1219 }
1220
1221 /**
1222  * megasas_make_sgl_skinny - Prepares IEEE SGL
1223  * @instance:           Adapter soft state
1224  * @scp:                SCSI command from the mid-layer
1225  * @mfi_sgl:            SGL to be filled in
1226  *
1227  * If successful, this function returns the number of SG elements. Otherwise,
1228  * it returnes -1.
1229  */
1230 static int
1231 megasas_make_sgl_skinny(struct megasas_instance *instance,
1232                 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)
1233 {
1234         int i;
1235         int sge_count;
1236         struct scatterlist *os_sgl;
1237
1238         sge_count = scsi_dma_map(scp);
1239
1240         if (sge_count) {
1241                 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1242                         mfi_sgl->sge_skinny[i].length =
1243                                 cpu_to_le32(sg_dma_len(os_sgl));
1244                         mfi_sgl->sge_skinny[i].phys_addr =
1245                                 cpu_to_le64(sg_dma_address(os_sgl));
1246                         mfi_sgl->sge_skinny[i].flag = cpu_to_le32(0);
1247                 }
1248         }
1249         return sge_count;
1250 }
1251
1252  /**
1253  * megasas_get_frame_count - Computes the number of frames
1254  * @frame_type          : type of frame- io or pthru frame
1255  * @sge_count           : number of sg elements
1256  *
1257  * Returns the number of frames required for numnber of sge's (sge_count)
1258  */
1259
1260 static u32 megasas_get_frame_count(struct megasas_instance *instance,
1261                         u8 sge_count, u8 frame_type)
1262 {
1263         int num_cnt;
1264         int sge_bytes;
1265         u32 sge_sz;
1266         u32 frame_count = 0;
1267
1268         sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
1269             sizeof(struct megasas_sge32);
1270
1271         if (instance->flag_ieee) {
1272                 sge_sz = sizeof(struct megasas_sge_skinny);
1273         }
1274
1275         /*
1276          * Main frame can contain 2 SGEs for 64-bit SGLs and
1277          * 3 SGEs for 32-bit SGLs for ldio &
1278          * 1 SGEs for 64-bit SGLs and
1279          * 2 SGEs for 32-bit SGLs for pthru frame
1280          */
1281         if (unlikely(frame_type == PTHRU_FRAME)) {
1282                 if (instance->flag_ieee == 1) {
1283                         num_cnt = sge_count - 1;
1284                 } else if (IS_DMA64)
1285                         num_cnt = sge_count - 1;
1286                 else
1287                         num_cnt = sge_count - 2;
1288         } else {
1289                 if (instance->flag_ieee == 1) {
1290                         num_cnt = sge_count - 1;
1291                 } else if (IS_DMA64)
1292                         num_cnt = sge_count - 2;
1293                 else
1294                         num_cnt = sge_count - 3;
1295         }
1296
1297         if (num_cnt > 0) {
1298                 sge_bytes = sge_sz * num_cnt;
1299
1300                 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
1301                     ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ;
1302         }
1303         /* Main frame */
1304         frame_count += 1;
1305
1306         if (frame_count > 7)
1307                 frame_count = 8;
1308         return frame_count;
1309 }
1310
1311 /**
1312  * megasas_build_dcdb - Prepares a direct cdb (DCDB) command
1313  * @instance:           Adapter soft state
1314  * @scp:                SCSI command
1315  * @cmd:                Command to be prepared in
1316  *
1317  * This function prepares CDB commands. These are typcially pass-through
1318  * commands to the devices.
1319  */
1320 static int
1321 megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
1322                    struct megasas_cmd *cmd)
1323 {
1324         u32 is_logical;
1325         u32 device_id;
1326         u16 flags = 0;
1327         struct megasas_pthru_frame *pthru;
1328
1329         is_logical = MEGASAS_IS_LOGICAL(scp->device);
1330         device_id = MEGASAS_DEV_INDEX(scp);
1331         pthru = (struct megasas_pthru_frame *)cmd->frame;
1332
1333         if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1334                 flags = MFI_FRAME_DIR_WRITE;
1335         else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1336                 flags = MFI_FRAME_DIR_READ;
1337         else if (scp->sc_data_direction == PCI_DMA_NONE)
1338                 flags = MFI_FRAME_DIR_NONE;
1339
1340         if (instance->flag_ieee == 1) {
1341                 flags |= MFI_FRAME_IEEE;
1342         }
1343
1344         /*
1345          * Prepare the DCDB frame
1346          */
1347         pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO;
1348         pthru->cmd_status = 0x0;
1349         pthru->scsi_status = 0x0;
1350         pthru->target_id = device_id;
1351         pthru->lun = scp->device->lun;
1352         pthru->cdb_len = scp->cmd_len;
1353         pthru->timeout = 0;
1354         pthru->pad_0 = 0;
1355         pthru->flags = cpu_to_le16(flags);
1356         pthru->data_xfer_len = cpu_to_le32(scsi_bufflen(scp));
1357
1358         memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
1359
1360         /*
1361          * If the command is for the tape device, set the
1362          * pthru timeout to the os layer timeout value.
1363          */
1364         if (scp->device->type == TYPE_TAPE) {
1365                 if ((scp->request->timeout / HZ) > 0xFFFF)
1366                         pthru->timeout = cpu_to_le16(0xFFFF);
1367                 else
1368                         pthru->timeout = cpu_to_le16(scp->request->timeout / HZ);
1369         }
1370
1371         /*
1372          * Construct SGL
1373          */
1374         if (instance->flag_ieee == 1) {
1375                 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1376                 pthru->sge_count = megasas_make_sgl_skinny(instance, scp,
1377                                                       &pthru->sgl);
1378         } else if (IS_DMA64) {
1379                 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1380                 pthru->sge_count = megasas_make_sgl64(instance, scp,
1381                                                       &pthru->sgl);
1382         } else
1383                 pthru->sge_count = megasas_make_sgl32(instance, scp,
1384                                                       &pthru->sgl);
1385
1386         if (pthru->sge_count > instance->max_num_sge) {
1387                 dev_err(&instance->pdev->dev, "DCDB too many SGE NUM=%x\n",
1388                         pthru->sge_count);
1389                 return 0;
1390         }
1391
1392         /*
1393          * Sense info specific
1394          */
1395         pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
1396         pthru->sense_buf_phys_addr_hi =
1397                 cpu_to_le32(upper_32_bits(cmd->sense_phys_addr));
1398         pthru->sense_buf_phys_addr_lo =
1399                 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
1400
1401         /*
1402          * Compute the total number of frames this command consumes. FW uses
1403          * this number to pull sufficient number of frames from host memory.
1404          */
1405         cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count,
1406                                                         PTHRU_FRAME);
1407
1408         return cmd->frame_count;
1409 }
1410
1411 /**
1412  * megasas_build_ldio - Prepares IOs to logical devices
1413  * @instance:           Adapter soft state
1414  * @scp:                SCSI command
1415  * @cmd:                Command to be prepared
1416  *
1417  * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
1418  */
1419 static int
1420 megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
1421                    struct megasas_cmd *cmd)
1422 {
1423         u32 device_id;
1424         u8 sc = scp->cmnd[0];
1425         u16 flags = 0;
1426         struct megasas_io_frame *ldio;
1427
1428         device_id = MEGASAS_DEV_INDEX(scp);
1429         ldio = (struct megasas_io_frame *)cmd->frame;
1430
1431         if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1432                 flags = MFI_FRAME_DIR_WRITE;
1433         else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1434                 flags = MFI_FRAME_DIR_READ;
1435
1436         if (instance->flag_ieee == 1) {
1437                 flags |= MFI_FRAME_IEEE;
1438         }
1439
1440         /*
1441          * Prepare the Logical IO frame: 2nd bit is zero for all read cmds
1442          */
1443         ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ;
1444         ldio->cmd_status = 0x0;
1445         ldio->scsi_status = 0x0;
1446         ldio->target_id = device_id;
1447         ldio->timeout = 0;
1448         ldio->reserved_0 = 0;
1449         ldio->pad_0 = 0;
1450         ldio->flags = cpu_to_le16(flags);
1451         ldio->start_lba_hi = 0;
1452         ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;
1453
1454         /*
1455          * 6-byte READ(0x08) or WRITE(0x0A) cdb
1456          */
1457         if (scp->cmd_len == 6) {
1458                 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[4]);
1459                 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[1] << 16) |
1460                                                  ((u32) scp->cmnd[2] << 8) |
1461                                                  (u32) scp->cmnd[3]);
1462
1463                 ldio->start_lba_lo &= cpu_to_le32(0x1FFFFF);
1464         }
1465
1466         /*
1467          * 10-byte READ(0x28) or WRITE(0x2A) cdb
1468          */
1469         else if (scp->cmd_len == 10) {
1470                 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[8] |
1471                                               ((u32) scp->cmnd[7] << 8));
1472                 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1473                                                  ((u32) scp->cmnd[3] << 16) |
1474                                                  ((u32) scp->cmnd[4] << 8) |
1475                                                  (u32) scp->cmnd[5]);
1476         }
1477
1478         /*
1479          * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1480          */
1481         else if (scp->cmd_len == 12) {
1482                 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1483                                               ((u32) scp->cmnd[7] << 16) |
1484                                               ((u32) scp->cmnd[8] << 8) |
1485                                               (u32) scp->cmnd[9]);
1486
1487                 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1488                                                  ((u32) scp->cmnd[3] << 16) |
1489                                                  ((u32) scp->cmnd[4] << 8) |
1490                                                  (u32) scp->cmnd[5]);
1491         }
1492
1493         /*
1494          * 16-byte READ(0x88) or WRITE(0x8A) cdb
1495          */
1496         else if (scp->cmd_len == 16) {
1497                 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[10] << 24) |
1498                                               ((u32) scp->cmnd[11] << 16) |
1499                                               ((u32) scp->cmnd[12] << 8) |
1500                                               (u32) scp->cmnd[13]);
1501
1502                 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1503                                                  ((u32) scp->cmnd[7] << 16) |
1504                                                  ((u32) scp->cmnd[8] << 8) |
1505                                                  (u32) scp->cmnd[9]);
1506
1507                 ldio->start_lba_hi = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1508                                                  ((u32) scp->cmnd[3] << 16) |
1509                                                  ((u32) scp->cmnd[4] << 8) |
1510                                                  (u32) scp->cmnd[5]);
1511
1512         }
1513
1514         /*
1515          * Construct SGL
1516          */
1517         if (instance->flag_ieee) {
1518                 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1519                 ldio->sge_count = megasas_make_sgl_skinny(instance, scp,
1520                                               &ldio->sgl);
1521         } else if (IS_DMA64) {
1522                 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1523                 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl);
1524         } else
1525                 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl);
1526
1527         if (ldio->sge_count > instance->max_num_sge) {
1528                 dev_err(&instance->pdev->dev, "build_ld_io: sge_count = %x\n",
1529                         ldio->sge_count);
1530                 return 0;
1531         }
1532
1533         /*
1534          * Sense info specific
1535          */
1536         ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
1537         ldio->sense_buf_phys_addr_hi = 0;
1538         ldio->sense_buf_phys_addr_lo = cpu_to_le32(cmd->sense_phys_addr);
1539
1540         /*
1541          * Compute the total number of frames this command consumes. FW uses
1542          * this number to pull sufficient number of frames from host memory.
1543          */
1544         cmd->frame_count = megasas_get_frame_count(instance,
1545                         ldio->sge_count, IO_FRAME);
1546
1547         return cmd->frame_count;
1548 }
1549
1550 /**
1551  * megasas_cmd_type -           Checks if the cmd is for logical drive/sysPD
1552  *                              and whether it's RW or non RW
1553  * @scmd:                       SCSI command
1554  *
1555  */
1556 inline int megasas_cmd_type(struct scsi_cmnd *cmd)
1557 {
1558         int ret;
1559
1560         switch (cmd->cmnd[0]) {
1561         case READ_10:
1562         case WRITE_10:
1563         case READ_12:
1564         case WRITE_12:
1565         case READ_6:
1566         case WRITE_6:
1567         case READ_16:
1568         case WRITE_16:
1569                 ret = (MEGASAS_IS_LOGICAL(cmd->device)) ?
1570                         READ_WRITE_LDIO : READ_WRITE_SYSPDIO;
1571                 break;
1572         default:
1573                 ret = (MEGASAS_IS_LOGICAL(cmd->device)) ?
1574                         NON_READ_WRITE_LDIO : NON_READ_WRITE_SYSPDIO;
1575         }
1576         return ret;
1577 }
1578
1579  /**
1580  * megasas_dump_pending_frames -        Dumps the frame address of all pending cmds
1581  *                                      in FW
1582  * @instance:                           Adapter soft state
1583  */
1584 static inline void
1585 megasas_dump_pending_frames(struct megasas_instance *instance)
1586 {
1587         struct megasas_cmd *cmd;
1588         int i,n;
1589         union megasas_sgl *mfi_sgl;
1590         struct megasas_io_frame *ldio;
1591         struct megasas_pthru_frame *pthru;
1592         u32 sgcount;
1593         u16 max_cmd = instance->max_fw_cmds;
1594
1595         dev_err(&instance->pdev->dev, "[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no);
1596         dev_err(&instance->pdev->dev, "[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding));
1597         if (IS_DMA64)
1598                 dev_err(&instance->pdev->dev, "[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no);
1599         else
1600                 dev_err(&instance->pdev->dev, "[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no);
1601
1602         dev_err(&instance->pdev->dev, "[%d]: Pending OS cmds in FW : \n",instance->host->host_no);
1603         for (i = 0; i < max_cmd; i++) {
1604                 cmd = instance->cmd_list[i];
1605                 if (!cmd->scmd)
1606                         continue;
1607                 dev_err(&instance->pdev->dev, "[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr);
1608                 if (megasas_cmd_type(cmd->scmd) == READ_WRITE_LDIO) {
1609                         ldio = (struct megasas_io_frame *)cmd->frame;
1610                         mfi_sgl = &ldio->sgl;
1611                         sgcount = ldio->sge_count;
1612                         dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x,"
1613                         " lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1614                         instance->host->host_no, cmd->frame_count, ldio->cmd, ldio->target_id,
1615                         le32_to_cpu(ldio->start_lba_lo), le32_to_cpu(ldio->start_lba_hi),
1616                         le32_to_cpu(ldio->sense_buf_phys_addr_lo), sgcount);
1617                 } else {
1618                         pthru = (struct megasas_pthru_frame *) cmd->frame;
1619                         mfi_sgl = &pthru->sgl;
1620                         sgcount = pthru->sge_count;
1621                         dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, "
1622                         "lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1623                         instance->host->host_no, cmd->frame_count, pthru->cmd, pthru->target_id,
1624                         pthru->lun, pthru->cdb_len, le32_to_cpu(pthru->data_xfer_len),
1625                         le32_to_cpu(pthru->sense_buf_phys_addr_lo), sgcount);
1626                 }
1627                 if (megasas_dbg_lvl & MEGASAS_DBG_LVL) {
1628                         for (n = 0; n < sgcount; n++) {
1629                                 if (IS_DMA64)
1630                                         dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%llx\n",
1631                                                 le32_to_cpu(mfi_sgl->sge64[n].length),
1632                                                 le64_to_cpu(mfi_sgl->sge64[n].phys_addr));
1633                                 else
1634                                         dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%x\n",
1635                                                 le32_to_cpu(mfi_sgl->sge32[n].length),
1636                                                 le32_to_cpu(mfi_sgl->sge32[n].phys_addr));
1637                         }
1638                 }
1639         } /*for max_cmd*/
1640         dev_err(&instance->pdev->dev, "[%d]: Pending Internal cmds in FW : \n",instance->host->host_no);
1641         for (i = 0; i < max_cmd; i++) {
1642
1643                 cmd = instance->cmd_list[i];
1644
1645                 if (cmd->sync_cmd == 1)
1646                         dev_err(&instance->pdev->dev, "0x%08lx : ", (unsigned long)cmd->frame_phys_addr);
1647         }
1648         dev_err(&instance->pdev->dev, "[%d]: Dumping Done\n\n",instance->host->host_no);
1649 }
1650
1651 u32
1652 megasas_build_and_issue_cmd(struct megasas_instance *instance,
1653                             struct scsi_cmnd *scmd)
1654 {
1655         struct megasas_cmd *cmd;
1656         u32 frame_count;
1657
1658         cmd = megasas_get_cmd(instance);
1659         if (!cmd)
1660                 return SCSI_MLQUEUE_HOST_BUSY;
1661
1662         /*
1663          * Logical drive command
1664          */
1665         if (megasas_cmd_type(scmd) == READ_WRITE_LDIO)
1666                 frame_count = megasas_build_ldio(instance, scmd, cmd);
1667         else
1668                 frame_count = megasas_build_dcdb(instance, scmd, cmd);
1669
1670         if (!frame_count)
1671                 goto out_return_cmd;
1672
1673         cmd->scmd = scmd;
1674         scmd->SCp.ptr = (char *)cmd;
1675
1676         /*
1677          * Issue the command to the FW
1678          */
1679         atomic_inc(&instance->fw_outstanding);
1680
1681         instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
1682                                 cmd->frame_count-1, instance->reg_set);
1683
1684         return 0;
1685 out_return_cmd:
1686         megasas_return_cmd(instance, cmd);
1687         return SCSI_MLQUEUE_HOST_BUSY;
1688 }
1689
1690
1691 /**
1692  * megasas_queue_command -      Queue entry point
1693  * @scmd:                       SCSI command to be queued
1694  * @done:                       Callback entry point
1695  */
1696 static int
1697 megasas_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
1698 {
1699         struct megasas_instance *instance;
1700         struct MR_PRIV_DEVICE *mr_device_priv_data;
1701
1702         instance = (struct megasas_instance *)
1703             scmd->device->host->hostdata;
1704
1705         if (instance->unload == 1) {
1706                 scmd->result = DID_NO_CONNECT << 16;
1707                 scmd->scsi_done(scmd);
1708                 return 0;
1709         }
1710
1711         if (instance->issuepend_done == 0)
1712                 return SCSI_MLQUEUE_HOST_BUSY;
1713
1714
1715         /* Check for an mpio path and adjust behavior */
1716         if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
1717                 if (megasas_check_mpio_paths(instance, scmd) ==
1718                     (DID_REQUEUE << 16)) {
1719                         return SCSI_MLQUEUE_HOST_BUSY;
1720                 } else {
1721                         scmd->result = DID_NO_CONNECT << 16;
1722                         scmd->scsi_done(scmd);
1723                         return 0;
1724                 }
1725         }
1726
1727         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1728                 scmd->result = DID_NO_CONNECT << 16;
1729                 scmd->scsi_done(scmd);
1730                 return 0;
1731         }
1732
1733         mr_device_priv_data = scmd->device->hostdata;
1734         if (!mr_device_priv_data) {
1735                 scmd->result = DID_NO_CONNECT << 16;
1736                 scmd->scsi_done(scmd);
1737                 return 0;
1738         }
1739
1740         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
1741                 return SCSI_MLQUEUE_HOST_BUSY;
1742
1743         if (mr_device_priv_data->tm_busy)
1744                 return SCSI_MLQUEUE_DEVICE_BUSY;
1745
1746
1747         scmd->result = 0;
1748
1749         if (MEGASAS_IS_LOGICAL(scmd->device) &&
1750             (scmd->device->id >= instance->fw_supported_vd_count ||
1751                 scmd->device->lun)) {
1752                 scmd->result = DID_BAD_TARGET << 16;
1753                 goto out_done;
1754         }
1755
1756         if ((scmd->cmnd[0] == SYNCHRONIZE_CACHE) &&
1757             MEGASAS_IS_LOGICAL(scmd->device) &&
1758             (!instance->fw_sync_cache_support)) {
1759                 scmd->result = DID_OK << 16;
1760                 goto out_done;
1761         }
1762
1763         return instance->instancet->build_and_issue_cmd(instance, scmd);
1764
1765  out_done:
1766         scmd->scsi_done(scmd);
1767         return 0;
1768 }
1769
1770 static struct megasas_instance *megasas_lookup_instance(u16 host_no)
1771 {
1772         int i;
1773
1774         for (i = 0; i < megasas_mgmt_info.max_index; i++) {
1775
1776                 if ((megasas_mgmt_info.instance[i]) &&
1777                     (megasas_mgmt_info.instance[i]->host->host_no == host_no))
1778                         return megasas_mgmt_info.instance[i];
1779         }
1780
1781         return NULL;
1782 }
1783
1784 /*
1785 * megasas_set_dynamic_target_properties -
1786 * Device property set by driver may not be static and it is required to be
1787 * updated after OCR
1788 *
1789 * set tm_capable.
1790 * set dma alignment (only for eedp protection enable vd).
1791 *
1792 * @sdev: OS provided scsi device
1793 *
1794 * Returns void
1795 */
1796 void megasas_set_dynamic_target_properties(struct scsi_device *sdev,
1797                                            bool is_target_prop)
1798 {
1799         u16 pd_index = 0, ld;
1800         u32 device_id;
1801         struct megasas_instance *instance;
1802         struct fusion_context *fusion;
1803         struct MR_PRIV_DEVICE *mr_device_priv_data;
1804         struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
1805         struct MR_LD_RAID *raid;
1806         struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
1807
1808         instance = megasas_lookup_instance(sdev->host->host_no);
1809         fusion = instance->ctrl_context;
1810         mr_device_priv_data = sdev->hostdata;
1811
1812         if (!fusion || !mr_device_priv_data)
1813                 return;
1814
1815         if (MEGASAS_IS_LOGICAL(sdev)) {
1816                 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL)
1817                                         + sdev->id;
1818                 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
1819                 ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
1820                 if (ld >= instance->fw_supported_vd_count)
1821                         return;
1822                 raid = MR_LdRaidGet(ld, local_map_ptr);
1823
1824                 if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER)
1825                 blk_queue_update_dma_alignment(sdev->request_queue, 0x7);
1826
1827                 mr_device_priv_data->is_tm_capable =
1828                         raid->capability.tmCapable;
1829         } else if (instance->use_seqnum_jbod_fp) {
1830                 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1831                         sdev->id;
1832                 pd_sync = (void *)fusion->pd_seq_sync
1833                                 [(instance->pd_seq_map_id - 1) & 1];
1834                 mr_device_priv_data->is_tm_capable =
1835                         pd_sync->seq[pd_index].capability.tmCapable;
1836         }
1837
1838         if (is_target_prop && instance->tgt_prop->reset_tmo) {
1839                 /*
1840                  * If FW provides a target reset timeout value, driver will use
1841                  * it. If not set, fallback to default values.
1842                  */
1843                 mr_device_priv_data->target_reset_tmo =
1844                         min_t(u8, instance->max_reset_tmo,
1845                               instance->tgt_prop->reset_tmo);
1846                 mr_device_priv_data->task_abort_tmo = instance->task_abort_tmo;
1847         } else {
1848                 mr_device_priv_data->target_reset_tmo =
1849                                                 MEGASAS_DEFAULT_TM_TIMEOUT;
1850                 mr_device_priv_data->task_abort_tmo =
1851                                                 MEGASAS_DEFAULT_TM_TIMEOUT;
1852         }
1853 }
1854
1855 /*
1856  * megasas_set_nvme_device_properties -
1857  * set nomerges=2
1858  * set virtual page boundary = 4K (current mr_nvme_pg_size is 4K).
1859  * set maximum io transfer = MDTS of NVME device provided by MR firmware.
1860  *
1861  * MR firmware provides value in KB. Caller of this function converts
1862  * kb into bytes.
1863  *
1864  * e.a MDTS=5 means 2^5 * nvme page size. (In case of 4K page size,
1865  * MR firmware provides value 128 as (32 * 4K) = 128K.
1866  *
1867  * @sdev:                               scsi device
1868  * @max_io_size:                                maximum io transfer size
1869  *
1870  */
1871 static inline void
1872 megasas_set_nvme_device_properties(struct scsi_device *sdev, u32 max_io_size)
1873 {
1874         struct megasas_instance *instance;
1875         u32 mr_nvme_pg_size;
1876
1877         instance = (struct megasas_instance *)sdev->host->hostdata;
1878         mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
1879                                 MR_DEFAULT_NVME_PAGE_SIZE);
1880
1881         blk_queue_max_hw_sectors(sdev->request_queue, (max_io_size / 512));
1882
1883         blk_queue_flag_set(QUEUE_FLAG_NOMERGES, sdev->request_queue);
1884         blk_queue_virt_boundary(sdev->request_queue, mr_nvme_pg_size - 1);
1885 }
1886
1887
1888 /*
1889  * megasas_set_static_target_properties -
1890  * Device property set by driver are static and it is not required to be
1891  * updated after OCR.
1892  *
1893  * set io timeout
1894  * set device queue depth
1895  * set nvme device properties. see - megasas_set_nvme_device_properties
1896  *
1897  * @sdev:                               scsi device
1898  * @is_target_prop                      true, if fw provided target properties.
1899  */
1900 static void megasas_set_static_target_properties(struct scsi_device *sdev,
1901                                                  bool is_target_prop)
1902 {
1903         u16     target_index = 0;
1904         u8 interface_type;
1905         u32 device_qd = MEGASAS_DEFAULT_CMD_PER_LUN;
1906         u32 max_io_size_kb = MR_DEFAULT_NVME_MDTS_KB;
1907         u32 tgt_device_qd;
1908         struct megasas_instance *instance;
1909         struct MR_PRIV_DEVICE *mr_device_priv_data;
1910
1911         instance = megasas_lookup_instance(sdev->host->host_no);
1912         mr_device_priv_data = sdev->hostdata;
1913         interface_type  = mr_device_priv_data->interface_type;
1914
1915         /*
1916          * The RAID firmware may require extended timeouts.
1917          */
1918         blk_queue_rq_timeout(sdev->request_queue, scmd_timeout * HZ);
1919
1920         target_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + sdev->id;
1921
1922         switch (interface_type) {
1923         case SAS_PD:
1924                 device_qd = MEGASAS_SAS_QD;
1925                 break;
1926         case SATA_PD:
1927                 device_qd = MEGASAS_SATA_QD;
1928                 break;
1929         case NVME_PD:
1930                 device_qd = MEGASAS_NVME_QD;
1931                 break;
1932         }
1933
1934         if (is_target_prop) {
1935                 tgt_device_qd = le32_to_cpu(instance->tgt_prop->device_qdepth);
1936                 if (tgt_device_qd &&
1937                     (tgt_device_qd <= instance->host->can_queue))
1938                         device_qd = tgt_device_qd;
1939
1940                 /* max_io_size_kb will be set to non zero for
1941                  * nvme based vd and syspd.
1942                  */
1943                 max_io_size_kb = le32_to_cpu(instance->tgt_prop->max_io_size_kb);
1944         }
1945
1946         if (instance->nvme_page_size && max_io_size_kb)
1947                 megasas_set_nvme_device_properties(sdev, (max_io_size_kb << 10));
1948
1949         scsi_change_queue_depth(sdev, device_qd);
1950
1951 }
1952
1953
1954 static int megasas_slave_configure(struct scsi_device *sdev)
1955 {
1956         u16 pd_index = 0;
1957         struct megasas_instance *instance;
1958         int ret_target_prop = DCMD_FAILED;
1959         bool is_target_prop = false;
1960
1961         instance = megasas_lookup_instance(sdev->host->host_no);
1962         if (instance->pd_list_not_supported) {
1963                 if (!MEGASAS_IS_LOGICAL(sdev) && sdev->type == TYPE_DISK) {
1964                         pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1965                                 sdev->id;
1966                         if (instance->pd_list[pd_index].driveState !=
1967                                 MR_PD_STATE_SYSTEM)
1968                                 return -ENXIO;
1969                 }
1970         }
1971
1972         mutex_lock(&instance->reset_mutex);
1973         /* Send DCMD to Firmware and cache the information */
1974         if ((instance->pd_info) && !MEGASAS_IS_LOGICAL(sdev))
1975                 megasas_get_pd_info(instance, sdev);
1976
1977         /* Some ventura firmware may not have instance->nvme_page_size set.
1978          * Do not send MR_DCMD_DRV_GET_TARGET_PROP
1979          */
1980         if ((instance->tgt_prop) && (instance->nvme_page_size))
1981                 ret_target_prop = megasas_get_target_prop(instance, sdev);
1982
1983         is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
1984         megasas_set_static_target_properties(sdev, is_target_prop);
1985
1986         /* This sdev property may change post OCR */
1987         megasas_set_dynamic_target_properties(sdev, is_target_prop);
1988
1989         mutex_unlock(&instance->reset_mutex);
1990
1991         return 0;
1992 }
1993
1994 static int megasas_slave_alloc(struct scsi_device *sdev)
1995 {
1996         u16 pd_index = 0;
1997         struct megasas_instance *instance ;
1998         struct MR_PRIV_DEVICE *mr_device_priv_data;
1999
2000         instance = megasas_lookup_instance(sdev->host->host_no);
2001         if (!MEGASAS_IS_LOGICAL(sdev)) {
2002                 /*
2003                  * Open the OS scan to the SYSTEM PD
2004                  */
2005                 pd_index =
2006                         (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
2007                         sdev->id;
2008                 if ((instance->pd_list_not_supported ||
2009                         instance->pd_list[pd_index].driveState ==
2010                         MR_PD_STATE_SYSTEM)) {
2011                         goto scan_target;
2012                 }
2013                 return -ENXIO;
2014         }
2015
2016 scan_target:
2017         mr_device_priv_data = kzalloc(sizeof(*mr_device_priv_data),
2018                                         GFP_KERNEL);
2019         if (!mr_device_priv_data)
2020                 return -ENOMEM;
2021         sdev->hostdata = mr_device_priv_data;
2022
2023         atomic_set(&mr_device_priv_data->r1_ldio_hint,
2024                    instance->r1_ldio_hint_default);
2025         return 0;
2026 }
2027
2028 static void megasas_slave_destroy(struct scsi_device *sdev)
2029 {
2030         kfree(sdev->hostdata);
2031         sdev->hostdata = NULL;
2032 }
2033
2034 /*
2035 * megasas_complete_outstanding_ioctls - Complete outstanding ioctls after a
2036 *                                       kill adapter
2037 * @instance:                            Adapter soft state
2038 *
2039 */
2040 static void megasas_complete_outstanding_ioctls(struct megasas_instance *instance)
2041 {
2042         int i;
2043         struct megasas_cmd *cmd_mfi;
2044         struct megasas_cmd_fusion *cmd_fusion;
2045         struct fusion_context *fusion = instance->ctrl_context;
2046
2047         /* Find all outstanding ioctls */
2048         if (fusion) {
2049                 for (i = 0; i < instance->max_fw_cmds; i++) {
2050                         cmd_fusion = fusion->cmd_list[i];
2051                         if (cmd_fusion->sync_cmd_idx != (u32)ULONG_MAX) {
2052                                 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
2053                                 if (cmd_mfi->sync_cmd &&
2054                                     (cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT)) {
2055                                         cmd_mfi->frame->hdr.cmd_status =
2056                                                         MFI_STAT_WRONG_STATE;
2057                                         megasas_complete_cmd(instance,
2058                                                              cmd_mfi, DID_OK);
2059                                 }
2060                         }
2061                 }
2062         } else {
2063                 for (i = 0; i < instance->max_fw_cmds; i++) {
2064                         cmd_mfi = instance->cmd_list[i];
2065                         if (cmd_mfi->sync_cmd && cmd_mfi->frame->hdr.cmd !=
2066                                 MFI_CMD_ABORT)
2067                                 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
2068                 }
2069         }
2070 }
2071
2072
2073 void megaraid_sas_kill_hba(struct megasas_instance *instance)
2074 {
2075         /* Set critical error to block I/O & ioctls in case caller didn't */
2076         atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2077         /* Wait 1 second to ensure IO or ioctls in build have posted */
2078         msleep(1000);
2079         if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2080                 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2081                 (instance->adapter_type != MFI_SERIES)) {
2082                 writel(MFI_STOP_ADP, &instance->reg_set->doorbell);
2083                 /* Flush */
2084                 readl(&instance->reg_set->doorbell);
2085                 if (instance->requestorId && instance->peerIsPresent)
2086                         memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
2087         } else {
2088                 writel(MFI_STOP_ADP,
2089                         &instance->reg_set->inbound_doorbell);
2090         }
2091         /* Complete outstanding ioctls when adapter is killed */
2092         megasas_complete_outstanding_ioctls(instance);
2093 }
2094
2095  /**
2096   * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
2097   *                                     restored to max value
2098   * @instance:                  Adapter soft state
2099   *
2100   */
2101 void
2102 megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
2103 {
2104         unsigned long flags;
2105
2106         if (instance->flag & MEGASAS_FW_BUSY
2107             && time_after(jiffies, instance->last_time + 5 * HZ)
2108             && atomic_read(&instance->fw_outstanding) <
2109             instance->throttlequeuedepth + 1) {
2110
2111                 spin_lock_irqsave(instance->host->host_lock, flags);
2112                 instance->flag &= ~MEGASAS_FW_BUSY;
2113
2114                 instance->host->can_queue = instance->cur_can_queue;
2115                 spin_unlock_irqrestore(instance->host->host_lock, flags);
2116         }
2117 }
2118
2119 /**
2120  * megasas_complete_cmd_dpc      -      Returns FW's controller structure
2121  * @instance_addr:                      Address of adapter soft state
2122  *
2123  * Tasklet to complete cmds
2124  */
2125 static void megasas_complete_cmd_dpc(unsigned long instance_addr)
2126 {
2127         u32 producer;
2128         u32 consumer;
2129         u32 context;
2130         struct megasas_cmd *cmd;
2131         struct megasas_instance *instance =
2132                                 (struct megasas_instance *)instance_addr;
2133         unsigned long flags;
2134
2135         /* If we have already declared adapter dead, donot complete cmds */
2136         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
2137                 return;
2138
2139         spin_lock_irqsave(&instance->completion_lock, flags);
2140
2141         producer = le32_to_cpu(*instance->producer);
2142         consumer = le32_to_cpu(*instance->consumer);
2143
2144         while (consumer != producer) {
2145                 context = le32_to_cpu(instance->reply_queue[consumer]);
2146                 if (context >= instance->max_fw_cmds) {
2147                         dev_err(&instance->pdev->dev, "Unexpected context value %x\n",
2148                                 context);
2149                         BUG();
2150                 }
2151
2152                 cmd = instance->cmd_list[context];
2153
2154                 megasas_complete_cmd(instance, cmd, DID_OK);
2155
2156                 consumer++;
2157                 if (consumer == (instance->max_fw_cmds + 1)) {
2158                         consumer = 0;
2159                 }
2160         }
2161
2162         *instance->consumer = cpu_to_le32(producer);
2163
2164         spin_unlock_irqrestore(&instance->completion_lock, flags);
2165
2166         /*
2167          * Check if we can restore can_queue
2168          */
2169         megasas_check_and_restore_queue_depth(instance);
2170 }
2171
2172 static void megasas_sriov_heartbeat_handler(struct timer_list *t);
2173
2174 /**
2175  * megasas_start_timer - Initializes sriov heartbeat timer object
2176  * @instance:           Adapter soft state
2177  *
2178  */
2179 void megasas_start_timer(struct megasas_instance *instance)
2180 {
2181         struct timer_list *timer = &instance->sriov_heartbeat_timer;
2182
2183         timer_setup(timer, megasas_sriov_heartbeat_handler, 0);
2184         timer->expires = jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF;
2185         add_timer(timer);
2186 }
2187
2188 static void
2189 megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
2190
2191 static void
2192 process_fw_state_change_wq(struct work_struct *work);
2193
2194 void megasas_do_ocr(struct megasas_instance *instance)
2195 {
2196         if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
2197         (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
2198         (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
2199                 *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
2200         }
2201         instance->instancet->disable_intr(instance);
2202         atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
2203         instance->issuepend_done = 0;
2204
2205         atomic_set(&instance->fw_outstanding, 0);
2206         megasas_internal_reset_defer_cmds(instance);
2207         process_fw_state_change_wq(&instance->work_init);
2208 }
2209
2210 static int megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance,
2211                                             int initial)
2212 {
2213         struct megasas_cmd *cmd;
2214         struct megasas_dcmd_frame *dcmd;
2215         struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL;
2216         dma_addr_t new_affiliation_111_h;
2217         int ld, retval = 0;
2218         u8 thisVf;
2219
2220         cmd = megasas_get_cmd(instance);
2221
2222         if (!cmd) {
2223                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation_111:"
2224                        "Failed to get cmd for scsi%d\n",
2225                         instance->host->host_no);
2226                 return -ENOMEM;
2227         }
2228
2229         dcmd = &cmd->frame->dcmd;
2230
2231         if (!instance->vf_affiliation_111) {
2232                 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2233                        "affiliation for scsi%d\n", instance->host->host_no);
2234                 megasas_return_cmd(instance, cmd);
2235                 return -ENOMEM;
2236         }
2237
2238         if (initial)
2239                         memset(instance->vf_affiliation_111, 0,
2240                                sizeof(struct MR_LD_VF_AFFILIATION_111));
2241         else {
2242                 new_affiliation_111 =
2243                         pci_zalloc_consistent(instance->pdev,
2244                                               sizeof(struct MR_LD_VF_AFFILIATION_111),
2245                                               &new_affiliation_111_h);
2246                 if (!new_affiliation_111) {
2247                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2248                                "memory for new affiliation for scsi%d\n",
2249                                instance->host->host_no);
2250                         megasas_return_cmd(instance, cmd);
2251                         return -ENOMEM;
2252                 }
2253         }
2254
2255         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2256
2257         dcmd->cmd = MFI_CMD_DCMD;
2258         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2259         dcmd->sge_count = 1;
2260         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2261         dcmd->timeout = 0;
2262         dcmd->pad_0 = 0;
2263         dcmd->data_xfer_len =
2264                 cpu_to_le32(sizeof(struct MR_LD_VF_AFFILIATION_111));
2265         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111);
2266
2267         if (initial)
2268                 dcmd->sgl.sge32[0].phys_addr =
2269                         cpu_to_le32(instance->vf_affiliation_111_h);
2270         else
2271                 dcmd->sgl.sge32[0].phys_addr =
2272                         cpu_to_le32(new_affiliation_111_h);
2273
2274         dcmd->sgl.sge32[0].length = cpu_to_le32(
2275                 sizeof(struct MR_LD_VF_AFFILIATION_111));
2276
2277         dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2278                "scsi%d\n", instance->host->host_no);
2279
2280         if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2281                 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2282                        " failed with status 0x%x for scsi%d\n",
2283                        dcmd->cmd_status, instance->host->host_no);
2284                 retval = 1; /* Do a scan if we couldn't get affiliation */
2285                 goto out;
2286         }
2287
2288         if (!initial) {
2289                 thisVf = new_affiliation_111->thisVf;
2290                 for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++)
2291                         if (instance->vf_affiliation_111->map[ld].policy[thisVf] !=
2292                             new_affiliation_111->map[ld].policy[thisVf]) {
2293                                 dev_warn(&instance->pdev->dev, "SR-IOV: "
2294                                        "Got new LD/VF affiliation for scsi%d\n",
2295                                        instance->host->host_no);
2296                                 memcpy(instance->vf_affiliation_111,
2297                                        new_affiliation_111,
2298                                        sizeof(struct MR_LD_VF_AFFILIATION_111));
2299                                 retval = 1;
2300                                 goto out;
2301                         }
2302         }
2303 out:
2304         if (new_affiliation_111) {
2305                 pci_free_consistent(instance->pdev,
2306                                     sizeof(struct MR_LD_VF_AFFILIATION_111),
2307                                     new_affiliation_111,
2308                                     new_affiliation_111_h);
2309         }
2310
2311         megasas_return_cmd(instance, cmd);
2312
2313         return retval;
2314 }
2315
2316 static int megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance,
2317                                             int initial)
2318 {
2319         struct megasas_cmd *cmd;
2320         struct megasas_dcmd_frame *dcmd;
2321         struct MR_LD_VF_AFFILIATION *new_affiliation = NULL;
2322         struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL;
2323         dma_addr_t new_affiliation_h;
2324         int i, j, retval = 0, found = 0, doscan = 0;
2325         u8 thisVf;
2326
2327         cmd = megasas_get_cmd(instance);
2328
2329         if (!cmd) {
2330                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation12: "
2331                        "Failed to get cmd for scsi%d\n",
2332                        instance->host->host_no);
2333                 return -ENOMEM;
2334         }
2335
2336         dcmd = &cmd->frame->dcmd;
2337
2338         if (!instance->vf_affiliation) {
2339                 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2340                        "affiliation for scsi%d\n", instance->host->host_no);
2341                 megasas_return_cmd(instance, cmd);
2342                 return -ENOMEM;
2343         }
2344
2345         if (initial)
2346                 memset(instance->vf_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
2347                        sizeof(struct MR_LD_VF_AFFILIATION));
2348         else {
2349                 new_affiliation =
2350                         pci_zalloc_consistent(instance->pdev,
2351                                               (MAX_LOGICAL_DRIVES + 1) *
2352                                               sizeof(struct MR_LD_VF_AFFILIATION),
2353                                               &new_affiliation_h);
2354                 if (!new_affiliation) {
2355                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2356                                "memory for new affiliation for scsi%d\n",
2357                                instance->host->host_no);
2358                         megasas_return_cmd(instance, cmd);
2359                         return -ENOMEM;
2360                 }
2361         }
2362
2363         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2364
2365         dcmd->cmd = MFI_CMD_DCMD;
2366         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2367         dcmd->sge_count = 1;
2368         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2369         dcmd->timeout = 0;
2370         dcmd->pad_0 = 0;
2371         dcmd->data_xfer_len = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2372                 sizeof(struct MR_LD_VF_AFFILIATION));
2373         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS);
2374
2375         if (initial)
2376                 dcmd->sgl.sge32[0].phys_addr =
2377                         cpu_to_le32(instance->vf_affiliation_h);
2378         else
2379                 dcmd->sgl.sge32[0].phys_addr =
2380                         cpu_to_le32(new_affiliation_h);
2381
2382         dcmd->sgl.sge32[0].length = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2383                 sizeof(struct MR_LD_VF_AFFILIATION));
2384
2385         dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2386                "scsi%d\n", instance->host->host_no);
2387
2388
2389         if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2390                 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2391                        " failed with status 0x%x for scsi%d\n",
2392                        dcmd->cmd_status, instance->host->host_no);
2393                 retval = 1; /* Do a scan if we couldn't get affiliation */
2394                 goto out;
2395         }
2396
2397         if (!initial) {
2398                 if (!new_affiliation->ldCount) {
2399                         dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2400                                "affiliation for passive path for scsi%d\n",
2401                                instance->host->host_no);
2402                         retval = 1;
2403                         goto out;
2404                 }
2405                 newmap = new_affiliation->map;
2406                 savedmap = instance->vf_affiliation->map;
2407                 thisVf = new_affiliation->thisVf;
2408                 for (i = 0 ; i < new_affiliation->ldCount; i++) {
2409                         found = 0;
2410                         for (j = 0; j < instance->vf_affiliation->ldCount;
2411                              j++) {
2412                                 if (newmap->ref.targetId ==
2413                                     savedmap->ref.targetId) {
2414                                         found = 1;
2415                                         if (newmap->policy[thisVf] !=
2416                                             savedmap->policy[thisVf]) {
2417                                                 doscan = 1;
2418                                                 goto out;
2419                                         }
2420                                 }
2421                                 savedmap = (struct MR_LD_VF_MAP *)
2422                                         ((unsigned char *)savedmap +
2423                                          savedmap->size);
2424                         }
2425                         if (!found && newmap->policy[thisVf] !=
2426                             MR_LD_ACCESS_HIDDEN) {
2427                                 doscan = 1;
2428                                 goto out;
2429                         }
2430                         newmap = (struct MR_LD_VF_MAP *)
2431                                 ((unsigned char *)newmap + newmap->size);
2432                 }
2433
2434                 newmap = new_affiliation->map;
2435                 savedmap = instance->vf_affiliation->map;
2436
2437                 for (i = 0 ; i < instance->vf_affiliation->ldCount; i++) {
2438                         found = 0;
2439                         for (j = 0 ; j < new_affiliation->ldCount; j++) {
2440                                 if (savedmap->ref.targetId ==
2441                                     newmap->ref.targetId) {
2442                                         found = 1;
2443                                         if (savedmap->policy[thisVf] !=
2444                                             newmap->policy[thisVf]) {
2445                                                 doscan = 1;
2446                                                 goto out;
2447                                         }
2448                                 }
2449                                 newmap = (struct MR_LD_VF_MAP *)
2450                                         ((unsigned char *)newmap +
2451                                          newmap->size);
2452                         }
2453                         if (!found && savedmap->policy[thisVf] !=
2454                             MR_LD_ACCESS_HIDDEN) {
2455                                 doscan = 1;
2456                                 goto out;
2457                         }
2458                         savedmap = (struct MR_LD_VF_MAP *)
2459                                 ((unsigned char *)savedmap +
2460                                  savedmap->size);
2461                 }
2462         }
2463 out:
2464         if (doscan) {
2465                 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2466                        "affiliation for scsi%d\n", instance->host->host_no);
2467                 memcpy(instance->vf_affiliation, new_affiliation,
2468                        new_affiliation->size);
2469                 retval = 1;
2470         }
2471
2472         if (new_affiliation)
2473                 pci_free_consistent(instance->pdev,
2474                                     (MAX_LOGICAL_DRIVES + 1) *
2475                                     sizeof(struct MR_LD_VF_AFFILIATION),
2476                                     new_affiliation, new_affiliation_h);
2477         megasas_return_cmd(instance, cmd);
2478
2479         return retval;
2480 }
2481
2482 /* This function will get the current SR-IOV LD/VF affiliation */
2483 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
2484         int initial)
2485 {
2486         int retval;
2487
2488         if (instance->PlasmaFW111)
2489                 retval = megasas_get_ld_vf_affiliation_111(instance, initial);
2490         else
2491                 retval = megasas_get_ld_vf_affiliation_12(instance, initial);
2492         return retval;
2493 }
2494
2495 /* This function will tell FW to start the SR-IOV heartbeat */
2496 int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
2497                                          int initial)
2498 {
2499         struct megasas_cmd *cmd;
2500         struct megasas_dcmd_frame *dcmd;
2501         int retval = 0;
2502
2503         cmd = megasas_get_cmd(instance);
2504
2505         if (!cmd) {
2506                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_sriov_start_heartbeat: "
2507                        "Failed to get cmd for scsi%d\n",
2508                        instance->host->host_no);
2509                 return -ENOMEM;
2510         }
2511
2512         dcmd = &cmd->frame->dcmd;
2513
2514         if (initial) {
2515                 instance->hb_host_mem =
2516                         pci_zalloc_consistent(instance->pdev,
2517                                               sizeof(struct MR_CTRL_HB_HOST_MEM),
2518                                               &instance->hb_host_mem_h);
2519                 if (!instance->hb_host_mem) {
2520                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate"
2521                                " memory for heartbeat host memory for scsi%d\n",
2522                                instance->host->host_no);
2523                         retval = -ENOMEM;
2524                         goto out;
2525                 }
2526         }
2527
2528         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2529
2530         dcmd->mbox.s[0] = cpu_to_le16(sizeof(struct MR_CTRL_HB_HOST_MEM));
2531         dcmd->cmd = MFI_CMD_DCMD;
2532         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2533         dcmd->sge_count = 1;
2534         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2535         dcmd->timeout = 0;
2536         dcmd->pad_0 = 0;
2537         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM));
2538         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC);
2539
2540         megasas_set_dma_settings(instance, dcmd, instance->hb_host_mem_h,
2541                                  sizeof(struct MR_CTRL_HB_HOST_MEM));
2542
2543         dev_warn(&instance->pdev->dev, "SR-IOV: Starting heartbeat for scsi%d\n",
2544                instance->host->host_no);
2545
2546         if ((instance->adapter_type != MFI_SERIES) &&
2547             !instance->mask_interrupts)
2548                 retval = megasas_issue_blocked_cmd(instance, cmd,
2549                         MEGASAS_ROUTINE_WAIT_TIME_VF);
2550         else
2551                 retval = megasas_issue_polled(instance, cmd);
2552
2553         if (retval) {
2554                 dev_warn(&instance->pdev->dev, "SR-IOV: MR_DCMD_CTRL_SHARED_HOST"
2555                         "_MEM_ALLOC DCMD %s for scsi%d\n",
2556                         (dcmd->cmd_status == MFI_STAT_INVALID_STATUS) ?
2557                         "timed out" : "failed", instance->host->host_no);
2558                 retval = 1;
2559         }
2560
2561 out:
2562         megasas_return_cmd(instance, cmd);
2563
2564         return retval;
2565 }
2566
2567 /* Handler for SR-IOV heartbeat */
2568 static void megasas_sriov_heartbeat_handler(struct timer_list *t)
2569 {
2570         struct megasas_instance *instance =
2571                 from_timer(instance, t, sriov_heartbeat_timer);
2572
2573         if (instance->hb_host_mem->HB.fwCounter !=
2574             instance->hb_host_mem->HB.driverCounter) {
2575                 instance->hb_host_mem->HB.driverCounter =
2576                         instance->hb_host_mem->HB.fwCounter;
2577                 mod_timer(&instance->sriov_heartbeat_timer,
2578                           jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
2579         } else {
2580                 dev_warn(&instance->pdev->dev, "SR-IOV: Heartbeat never "
2581                        "completed for scsi%d\n", instance->host->host_no);
2582                 schedule_work(&instance->work_init);
2583         }
2584 }
2585
2586 /**
2587  * megasas_wait_for_outstanding -       Wait for all outstanding cmds
2588  * @instance:                           Adapter soft state
2589  *
2590  * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to
2591  * complete all its outstanding commands. Returns error if one or more IOs
2592  * are pending after this time period. It also marks the controller dead.
2593  */
2594 static int megasas_wait_for_outstanding(struct megasas_instance *instance)
2595 {
2596         int i, sl, outstanding;
2597         u32 reset_index;
2598         u32 wait_time = MEGASAS_RESET_WAIT_TIME;
2599         unsigned long flags;
2600         struct list_head clist_local;
2601         struct megasas_cmd *reset_cmd;
2602         u32 fw_state;
2603
2604         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2605                 dev_info(&instance->pdev->dev, "%s:%d HBA is killed.\n",
2606                 __func__, __LINE__);
2607                 return FAILED;
2608         }
2609
2610         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2611
2612                 INIT_LIST_HEAD(&clist_local);
2613                 spin_lock_irqsave(&instance->hba_lock, flags);
2614                 list_splice_init(&instance->internal_reset_pending_q,
2615                                 &clist_local);
2616                 spin_unlock_irqrestore(&instance->hba_lock, flags);
2617
2618                 dev_notice(&instance->pdev->dev, "HBA reset wait ...\n");
2619                 for (i = 0; i < wait_time; i++) {
2620                         msleep(1000);
2621                         if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL)
2622                                 break;
2623                 }
2624
2625                 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2626                         dev_notice(&instance->pdev->dev, "reset: Stopping HBA.\n");
2627                         atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2628                         return FAILED;
2629                 }
2630
2631                 reset_index = 0;
2632                 while (!list_empty(&clist_local)) {
2633                         reset_cmd = list_entry((&clist_local)->next,
2634                                                 struct megasas_cmd, list);
2635                         list_del_init(&reset_cmd->list);
2636                         if (reset_cmd->scmd) {
2637                                 reset_cmd->scmd->result = DID_REQUEUE << 16;
2638                                 dev_notice(&instance->pdev->dev, "%d:%p reset [%02x]\n",
2639                                         reset_index, reset_cmd,
2640                                         reset_cmd->scmd->cmnd[0]);
2641
2642                                 reset_cmd->scmd->scsi_done(reset_cmd->scmd);
2643                                 megasas_return_cmd(instance, reset_cmd);
2644                         } else if (reset_cmd->sync_cmd) {
2645                                 dev_notice(&instance->pdev->dev, "%p synch cmds"
2646                                                 "reset queue\n",
2647                                                 reset_cmd);
2648
2649                                 reset_cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
2650                                 instance->instancet->fire_cmd(instance,
2651                                                 reset_cmd->frame_phys_addr,
2652                                                 0, instance->reg_set);
2653                         } else {
2654                                 dev_notice(&instance->pdev->dev, "%p unexpected"
2655                                         "cmds lst\n",
2656                                         reset_cmd);
2657                         }
2658                         reset_index++;
2659                 }
2660
2661                 return SUCCESS;
2662         }
2663
2664         for (i = 0; i < resetwaittime; i++) {
2665                 outstanding = atomic_read(&instance->fw_outstanding);
2666
2667                 if (!outstanding)
2668                         break;
2669
2670                 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2671                         dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
2672                                "commands to complete\n",i,outstanding);
2673                         /*
2674                          * Call cmd completion routine. Cmd to be
2675                          * be completed directly without depending on isr.
2676                          */
2677                         megasas_complete_cmd_dpc((unsigned long)instance);
2678                 }
2679
2680                 msleep(1000);
2681         }
2682
2683         i = 0;
2684         outstanding = atomic_read(&instance->fw_outstanding);
2685         fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK;
2686
2687         if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2688                 goto no_outstanding;
2689
2690         if (instance->disableOnlineCtrlReset)
2691                 goto kill_hba_and_failed;
2692         do {
2693                 if ((fw_state == MFI_STATE_FAULT) || atomic_read(&instance->fw_outstanding)) {
2694                         dev_info(&instance->pdev->dev,
2695                                 "%s:%d waiting_for_outstanding: before issue OCR. FW state = 0x%x, oustanding 0x%x\n",
2696                                 __func__, __LINE__, fw_state, atomic_read(&instance->fw_outstanding));
2697                         if (i == 3)
2698                                 goto kill_hba_and_failed;
2699                         megasas_do_ocr(instance);
2700
2701                         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2702                                 dev_info(&instance->pdev->dev, "%s:%d OCR failed and HBA is killed.\n",
2703                                 __func__, __LINE__);
2704                                 return FAILED;
2705                         }
2706                         dev_info(&instance->pdev->dev, "%s:%d waiting_for_outstanding: after issue OCR.\n",
2707                                 __func__, __LINE__);
2708
2709                         for (sl = 0; sl < 10; sl++)
2710                                 msleep(500);
2711
2712                         outstanding = atomic_read(&instance->fw_outstanding);
2713
2714                         fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK;
2715                         if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2716                                 goto no_outstanding;
2717                 }
2718                 i++;
2719         } while (i <= 3);
2720
2721 no_outstanding:
2722
2723         dev_info(&instance->pdev->dev, "%s:%d no more pending commands remain after reset handling.\n",
2724                 __func__, __LINE__);
2725         return SUCCESS;
2726
2727 kill_hba_and_failed:
2728
2729         /* Reset not supported, kill adapter */
2730         dev_info(&instance->pdev->dev, "%s:%d killing adapter scsi%d"
2731                 " disableOnlineCtrlReset %d fw_outstanding %d \n",
2732                 __func__, __LINE__, instance->host->host_no, instance->disableOnlineCtrlReset,
2733                 atomic_read(&instance->fw_outstanding));
2734         megasas_dump_pending_frames(instance);
2735         megaraid_sas_kill_hba(instance);
2736
2737         return FAILED;
2738 }
2739
2740 /**
2741  * megasas_generic_reset -      Generic reset routine
2742  * @scmd:                       Mid-layer SCSI command
2743  *
2744  * This routine implements a generic reset handler for device, bus and host
2745  * reset requests. Device, bus and host specific reset handlers can use this
2746  * function after they do their specific tasks.
2747  */
2748 static int megasas_generic_reset(struct scsi_cmnd *scmd)
2749 {
2750         int ret_val;
2751         struct megasas_instance *instance;
2752
2753         instance = (struct megasas_instance *)scmd->device->host->hostdata;
2754
2755         scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n",
2756                  scmd->cmnd[0], scmd->retries);
2757
2758         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2759                 dev_err(&instance->pdev->dev, "cannot recover from previous reset failures\n");
2760                 return FAILED;
2761         }
2762
2763         ret_val = megasas_wait_for_outstanding(instance);
2764         if (ret_val == SUCCESS)
2765                 dev_notice(&instance->pdev->dev, "reset successful\n");
2766         else
2767                 dev_err(&instance->pdev->dev, "failed to do reset\n");
2768
2769         return ret_val;
2770 }
2771
2772 /**
2773  * megasas_reset_timer - quiesce the adapter if required
2774  * @scmd:               scsi cmnd
2775  *
2776  * Sets the FW busy flag and reduces the host->can_queue if the
2777  * cmd has not been completed within the timeout period.
2778  */
2779 static enum
2780 blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
2781 {
2782         struct megasas_instance *instance;
2783         unsigned long flags;
2784
2785         if (time_after(jiffies, scmd->jiffies_at_alloc +
2786                                 (scmd_timeout * 2) * HZ)) {
2787                 return BLK_EH_DONE;
2788         }
2789
2790         instance = (struct megasas_instance *)scmd->device->host->hostdata;
2791         if (!(instance->flag & MEGASAS_FW_BUSY)) {
2792                 /* FW is busy, throttle IO */
2793                 spin_lock_irqsave(instance->host->host_lock, flags);
2794
2795                 instance->host->can_queue = instance->throttlequeuedepth;
2796                 instance->last_time = jiffies;
2797                 instance->flag |= MEGASAS_FW_BUSY;
2798
2799                 spin_unlock_irqrestore(instance->host->host_lock, flags);
2800         }
2801         return BLK_EH_RESET_TIMER;
2802 }
2803
2804 /**
2805  * megasas_dump_frame - This function will dump MPT/MFI frame
2806  */
2807 static inline void
2808 megasas_dump_frame(void *mpi_request, int sz)
2809 {
2810         int i;
2811         __le32 *mfp = (__le32 *)mpi_request;
2812
2813         printk(KERN_INFO "IO request frame:\n\t");
2814         for (i = 0; i < sz / sizeof(__le32); i++) {
2815                 if (i && ((i % 8) == 0))
2816                         printk("\n\t");
2817                 printk("%08x ", le32_to_cpu(mfp[i]));
2818         }
2819         printk("\n");
2820 }
2821
2822 /**
2823  * megasas_reset_bus_host -     Bus & host reset handler entry point
2824  */
2825 static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
2826 {
2827         int ret;
2828         struct megasas_instance *instance;
2829
2830         instance = (struct megasas_instance *)scmd->device->host->hostdata;
2831
2832         scmd_printk(KERN_INFO, scmd,
2833                 "Controller reset is requested due to IO timeout\n"
2834                 "SCSI command pointer: (%p)\t SCSI host state: %d\t"
2835                 " SCSI host busy: %d\t FW outstanding: %d\n",
2836                 scmd, scmd->device->host->shost_state,
2837                 scsi_host_busy(scmd->device->host),
2838                 atomic_read(&instance->fw_outstanding));
2839
2840         /*
2841          * First wait for all commands to complete
2842          */
2843         if (instance->adapter_type == MFI_SERIES) {
2844                 ret = megasas_generic_reset(scmd);
2845         } else {
2846                 struct megasas_cmd_fusion *cmd;
2847                 cmd = (struct megasas_cmd_fusion *)scmd->SCp.ptr;
2848                 if (cmd)
2849                         megasas_dump_frame(cmd->io_request,
2850                                 MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE);
2851                 ret = megasas_reset_fusion(scmd->device->host,
2852                                 SCSIIO_TIMEOUT_OCR);
2853         }
2854
2855         return ret;
2856 }
2857
2858 /**
2859  * megasas_task_abort - Issues task abort request to firmware
2860  *                      (supported only for fusion adapters)
2861  * @scmd:               SCSI command pointer
2862  */
2863 static int megasas_task_abort(struct scsi_cmnd *scmd)
2864 {
2865         int ret;
2866         struct megasas_instance *instance;
2867
2868         instance = (struct megasas_instance *)scmd->device->host->hostdata;
2869
2870         if (instance->adapter_type != MFI_SERIES)
2871                 ret = megasas_task_abort_fusion(scmd);
2872         else {
2873                 sdev_printk(KERN_NOTICE, scmd->device, "TASK ABORT not supported\n");
2874                 ret = FAILED;
2875         }
2876
2877         return ret;
2878 }
2879
2880 /**
2881  * megasas_reset_target:  Issues target reset request to firmware
2882  *                        (supported only for fusion adapters)
2883  * @scmd:                 SCSI command pointer
2884  */
2885 static int megasas_reset_target(struct scsi_cmnd *scmd)
2886 {
2887         int ret;
2888         struct megasas_instance *instance;
2889
2890         instance = (struct megasas_instance *)scmd->device->host->hostdata;
2891
2892         if (instance->adapter_type != MFI_SERIES)
2893                 ret = megasas_reset_target_fusion(scmd);
2894         else {
2895                 sdev_printk(KERN_NOTICE, scmd->device, "TARGET RESET not supported\n");
2896                 ret = FAILED;
2897         }
2898
2899         return ret;
2900 }
2901
2902 /**
2903  * megasas_bios_param - Returns disk geometry for a disk
2904  * @sdev:               device handle
2905  * @bdev:               block device
2906  * @capacity:           drive capacity
2907  * @geom:               geometry parameters
2908  */
2909 static int
2910 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
2911                  sector_t capacity, int geom[])
2912 {
2913         int heads;
2914         int sectors;
2915         sector_t cylinders;
2916         unsigned long tmp;
2917
2918         /* Default heads (64) & sectors (32) */
2919         heads = 64;
2920         sectors = 32;
2921
2922         tmp = heads * sectors;
2923         cylinders = capacity;
2924
2925         sector_div(cylinders, tmp);
2926
2927         /*
2928          * Handle extended translation size for logical drives > 1Gb
2929          */
2930
2931         if (capacity >= 0x200000) {
2932                 heads = 255;
2933                 sectors = 63;
2934                 tmp = heads*sectors;
2935                 cylinders = capacity;
2936                 sector_div(cylinders, tmp);
2937         }
2938
2939         geom[0] = heads;
2940         geom[1] = sectors;
2941         geom[2] = cylinders;
2942
2943         return 0;
2944 }
2945
2946 static void megasas_aen_polling(struct work_struct *work);
2947
2948 /**
2949  * megasas_service_aen -        Processes an event notification
2950  * @instance:                   Adapter soft state
2951  * @cmd:                        AEN command completed by the ISR
2952  *
2953  * For AEN, driver sends a command down to FW that is held by the FW till an
2954  * event occurs. When an event of interest occurs, FW completes the command
2955  * that it was previously holding.
2956  *
2957  * This routines sends SIGIO signal to processes that have registered with the
2958  * driver for AEN.
2959  */
2960 static void
2961 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
2962 {
2963         unsigned long flags;
2964
2965         /*
2966          * Don't signal app if it is just an aborted previously registered aen
2967          */
2968         if ((!cmd->abort_aen) && (instance->unload == 0)) {
2969                 spin_lock_irqsave(&poll_aen_lock, flags);
2970                 megasas_poll_wait_aen = 1;
2971                 spin_unlock_irqrestore(&poll_aen_lock, flags);
2972                 wake_up(&megasas_poll_wait);
2973                 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
2974         }
2975         else
2976                 cmd->abort_aen = 0;
2977
2978         instance->aen_cmd = NULL;
2979
2980         megasas_return_cmd(instance, cmd);
2981
2982         if ((instance->unload == 0) &&
2983                 ((instance->issuepend_done == 1))) {
2984                 struct megasas_aen_event *ev;
2985
2986                 ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
2987                 if (!ev) {
2988                         dev_err(&instance->pdev->dev, "megasas_service_aen: out of memory\n");
2989                 } else {
2990                         ev->instance = instance;
2991                         instance->ev = ev;
2992                         INIT_DELAYED_WORK(&ev->hotplug_work,
2993                                           megasas_aen_polling);
2994                         schedule_delayed_work(&ev->hotplug_work, 0);
2995                 }
2996         }
2997 }
2998
2999 static ssize_t
3000 megasas_fw_crash_buffer_store(struct device *cdev,
3001         struct device_attribute *attr, const char *buf, size_t count)
3002 {
3003         struct Scsi_Host *shost = class_to_shost(cdev);
3004         struct megasas_instance *instance =
3005                 (struct megasas_instance *) shost->hostdata;
3006         int val = 0;
3007         unsigned long flags;
3008
3009         if (kstrtoint(buf, 0, &val) != 0)
3010                 return -EINVAL;
3011
3012         spin_lock_irqsave(&instance->crashdump_lock, flags);
3013         instance->fw_crash_buffer_offset = val;
3014         spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3015         return strlen(buf);
3016 }
3017
3018 static ssize_t
3019 megasas_fw_crash_buffer_show(struct device *cdev,
3020         struct device_attribute *attr, char *buf)
3021 {
3022         struct Scsi_Host *shost = class_to_shost(cdev);
3023         struct megasas_instance *instance =
3024                 (struct megasas_instance *) shost->hostdata;
3025         u32 size;
3026         unsigned long buff_addr;
3027         unsigned long dmachunk = CRASH_DMA_BUF_SIZE;
3028         unsigned long src_addr;
3029         unsigned long flags;
3030         u32 buff_offset;
3031
3032         spin_lock_irqsave(&instance->crashdump_lock, flags);
3033         buff_offset = instance->fw_crash_buffer_offset;
3034         if (!instance->crash_dump_buf &&
3035                 !((instance->fw_crash_state == AVAILABLE) ||
3036                 (instance->fw_crash_state == COPYING))) {
3037                 dev_err(&instance->pdev->dev,
3038                         "Firmware crash dump is not available\n");
3039                 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3040                 return -EINVAL;
3041         }
3042
3043         buff_addr = (unsigned long) buf;
3044
3045         if (buff_offset > (instance->fw_crash_buffer_size * dmachunk)) {
3046                 dev_err(&instance->pdev->dev,
3047                         "Firmware crash dump offset is out of range\n");
3048                 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3049                 return 0;
3050         }
3051
3052         size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset;
3053         size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size;
3054
3055         src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] +
3056                 (buff_offset % dmachunk);
3057         memcpy(buf, (void *)src_addr, size);
3058         spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3059
3060         return size;
3061 }
3062
3063 static ssize_t
3064 megasas_fw_crash_buffer_size_show(struct device *cdev,
3065         struct device_attribute *attr, char *buf)
3066 {
3067         struct Scsi_Host *shost = class_to_shost(cdev);
3068         struct megasas_instance *instance =
3069                 (struct megasas_instance *) shost->hostdata;
3070
3071         return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)
3072                 ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE);
3073 }
3074
3075 static ssize_t
3076 megasas_fw_crash_state_store(struct device *cdev,
3077         struct device_attribute *attr, const char *buf, size_t count)
3078 {
3079         struct Scsi_Host *shost = class_to_shost(cdev);
3080         struct megasas_instance *instance =
3081                 (struct megasas_instance *) shost->hostdata;
3082         int val = 0;
3083         unsigned long flags;
3084
3085         if (kstrtoint(buf, 0, &val) != 0)
3086                 return -EINVAL;
3087
3088         if ((val <= AVAILABLE || val > COPY_ERROR)) {
3089                 dev_err(&instance->pdev->dev, "application updates invalid "
3090                         "firmware crash state\n");
3091                 return -EINVAL;
3092         }
3093
3094         instance->fw_crash_state = val;
3095
3096         if ((val == COPIED) || (val == COPY_ERROR)) {
3097                 spin_lock_irqsave(&instance->crashdump_lock, flags);
3098                 megasas_free_host_crash_buffer(instance);
3099                 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3100                 if (val == COPY_ERROR)
3101                         dev_info(&instance->pdev->dev, "application failed to "
3102                                 "copy Firmware crash dump\n");
3103                 else
3104                         dev_info(&instance->pdev->dev, "Firmware crash dump "
3105                                 "copied successfully\n");
3106         }
3107         return strlen(buf);
3108 }
3109
3110 static ssize_t
3111 megasas_fw_crash_state_show(struct device *cdev,
3112         struct device_attribute *attr, char *buf)
3113 {
3114         struct Scsi_Host *shost = class_to_shost(cdev);
3115         struct megasas_instance *instance =
3116                 (struct megasas_instance *) shost->hostdata;
3117
3118         return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state);
3119 }
3120
3121 static ssize_t
3122 megasas_page_size_show(struct device *cdev,
3123         struct device_attribute *attr, char *buf)
3124 {
3125         return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1);
3126 }
3127
3128 static ssize_t
3129 megasas_ldio_outstanding_show(struct device *cdev, struct device_attribute *attr,
3130         char *buf)
3131 {
3132         struct Scsi_Host *shost = class_to_shost(cdev);
3133         struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3134
3135         return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->ldio_outstanding));
3136 }
3137
3138 static ssize_t
3139 megasas_fw_cmds_outstanding_show(struct device *cdev,
3140                                  struct device_attribute *attr, char *buf)
3141 {
3142         struct Scsi_Host *shost = class_to_shost(cdev);
3143         struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3144
3145         return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->fw_outstanding));
3146 }
3147
3148 static DEVICE_ATTR(fw_crash_buffer, S_IRUGO | S_IWUSR,
3149         megasas_fw_crash_buffer_show, megasas_fw_crash_buffer_store);
3150 static DEVICE_ATTR(fw_crash_buffer_size, S_IRUGO,
3151         megasas_fw_crash_buffer_size_show, NULL);
3152 static DEVICE_ATTR(fw_crash_state, S_IRUGO | S_IWUSR,
3153         megasas_fw_crash_state_show, megasas_fw_crash_state_store);
3154 static DEVICE_ATTR(page_size, S_IRUGO,
3155         megasas_page_size_show, NULL);
3156 static DEVICE_ATTR(ldio_outstanding, S_IRUGO,
3157         megasas_ldio_outstanding_show, NULL);
3158 static DEVICE_ATTR(fw_cmds_outstanding, S_IRUGO,
3159         megasas_fw_cmds_outstanding_show, NULL);
3160
3161 struct device_attribute *megaraid_host_attrs[] = {
3162         &dev_attr_fw_crash_buffer_size,
3163         &dev_attr_fw_crash_buffer,
3164         &dev_attr_fw_crash_state,
3165         &dev_attr_page_size,
3166         &dev_attr_ldio_outstanding,
3167         &dev_attr_fw_cmds_outstanding,
3168         NULL,
3169 };
3170
3171 /*
3172  * Scsi host template for megaraid_sas driver
3173  */
3174 static struct scsi_host_template megasas_template = {
3175
3176         .module = THIS_MODULE,
3177         .name = "Avago SAS based MegaRAID driver",
3178         .proc_name = "megaraid_sas",
3179         .slave_configure = megasas_slave_configure,
3180         .slave_alloc = megasas_slave_alloc,
3181         .slave_destroy = megasas_slave_destroy,
3182         .queuecommand = megasas_queue_command,
3183         .eh_target_reset_handler = megasas_reset_target,
3184         .eh_abort_handler = megasas_task_abort,
3185         .eh_host_reset_handler = megasas_reset_bus_host,
3186         .eh_timed_out = megasas_reset_timer,
3187         .shost_attrs = megaraid_host_attrs,
3188         .bios_param = megasas_bios_param,
3189         .use_clustering = ENABLE_CLUSTERING,
3190         .change_queue_depth = scsi_change_queue_depth,
3191         .no_write_same = 1,
3192 };
3193
3194 /**
3195  * megasas_complete_int_cmd -   Completes an internal command
3196  * @instance:                   Adapter soft state
3197  * @cmd:                        Command to be completed
3198  *
3199  * The megasas_issue_blocked_cmd() function waits for a command to complete
3200  * after it issues a command. This function wakes up that waiting routine by
3201  * calling wake_up() on the wait queue.
3202  */
3203 static void
3204 megasas_complete_int_cmd(struct megasas_instance *instance,
3205                          struct megasas_cmd *cmd)
3206 {
3207         cmd->cmd_status_drv = cmd->frame->io.cmd_status;
3208         wake_up(&instance->int_cmd_wait_q);
3209 }
3210
3211 /**
3212  * megasas_complete_abort -     Completes aborting a command
3213  * @instance:                   Adapter soft state
3214  * @cmd:                        Cmd that was issued to abort another cmd
3215  *
3216  * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
3217  * after it issues an abort on a previously issued command. This function
3218  * wakes up all functions waiting on the same wait queue.
3219  */
3220 static void
3221 megasas_complete_abort(struct megasas_instance *instance,
3222                        struct megasas_cmd *cmd)
3223 {
3224         if (cmd->sync_cmd) {
3225                 cmd->sync_cmd = 0;
3226                 cmd->cmd_status_drv = 0;
3227                 wake_up(&instance->abort_cmd_wait_q);
3228         }
3229 }
3230
3231 /**
3232  * megasas_complete_cmd -       Completes a command
3233  * @instance:                   Adapter soft state
3234  * @cmd:                        Command to be completed
3235  * @alt_status:                 If non-zero, use this value as status to
3236  *                              SCSI mid-layer instead of the value returned
3237  *                              by the FW. This should be used if caller wants
3238  *                              an alternate status (as in the case of aborted
3239  *                              commands)
3240  */
3241 void
3242 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
3243                      u8 alt_status)
3244 {
3245         int exception = 0;
3246         struct megasas_header *hdr = &cmd->frame->hdr;
3247         unsigned long flags;
3248         struct fusion_context *fusion = instance->ctrl_context;
3249         u32 opcode, status;
3250
3251         /* flag for the retry reset */
3252         cmd->retry_for_fw_reset = 0;
3253
3254         if (cmd->scmd)
3255                 cmd->scmd->SCp.ptr = NULL;
3256
3257         switch (hdr->cmd) {
3258         case MFI_CMD_INVALID:
3259                 /* Some older 1068 controller FW may keep a pended
3260                    MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel
3261                    when booting the kdump kernel.  Ignore this command to
3262                    prevent a kernel panic on shutdown of the kdump kernel. */
3263                 dev_warn(&instance->pdev->dev, "MFI_CMD_INVALID command "
3264                        "completed\n");
3265                 dev_warn(&instance->pdev->dev, "If you have a controller "
3266                        "other than PERC5, please upgrade your firmware\n");
3267                 break;
3268         case MFI_CMD_PD_SCSI_IO:
3269         case MFI_CMD_LD_SCSI_IO:
3270
3271                 /*
3272                  * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
3273                  * issued either through an IO path or an IOCTL path. If it
3274                  * was via IOCTL, we will send it to internal completion.
3275                  */
3276                 if (cmd->sync_cmd) {
3277                         cmd->sync_cmd = 0;
3278                         megasas_complete_int_cmd(instance, cmd);
3279                         break;
3280                 }
3281
3282         case MFI_CMD_LD_READ:
3283         case MFI_CMD_LD_WRITE:
3284
3285                 if (alt_status) {
3286                         cmd->scmd->result = alt_status << 16;
3287                         exception = 1;
3288                 }
3289
3290                 if (exception) {
3291
3292                         atomic_dec(&instance->fw_outstanding);
3293
3294                         scsi_dma_unmap(cmd->scmd);
3295                         cmd->scmd->scsi_done(cmd->scmd);
3296                         megasas_return_cmd(instance, cmd);
3297
3298                         break;
3299                 }
3300
3301                 switch (hdr->cmd_status) {
3302
3303                 case MFI_STAT_OK:
3304                         cmd->scmd->result = DID_OK << 16;
3305                         break;
3306
3307                 case MFI_STAT_SCSI_IO_FAILED:
3308                 case MFI_STAT_LD_INIT_IN_PROGRESS:
3309                         cmd->scmd->result =
3310                             (DID_ERROR << 16) | hdr->scsi_status;
3311                         break;
3312
3313                 case MFI_STAT_SCSI_DONE_WITH_ERROR:
3314
3315                         cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
3316
3317                         if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
3318                                 memset(cmd->scmd->sense_buffer, 0,
3319                                        SCSI_SENSE_BUFFERSIZE);
3320                                 memcpy(cmd->scmd->sense_buffer, cmd->sense,
3321                                        hdr->sense_len);
3322
3323                                 cmd->scmd->result |= DRIVER_SENSE << 24;
3324                         }
3325
3326                         break;
3327
3328                 case MFI_STAT_LD_OFFLINE:
3329                 case MFI_STAT_DEVICE_NOT_FOUND:
3330                         cmd->scmd->result = DID_BAD_TARGET << 16;
3331                         break;
3332
3333                 default:
3334                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "MFI FW status %#x\n",
3335                                hdr->cmd_status);
3336                         cmd->scmd->result = DID_ERROR << 16;
3337                         break;
3338                 }
3339
3340                 atomic_dec(&instance->fw_outstanding);
3341
3342                 scsi_dma_unmap(cmd->scmd);
3343                 cmd->scmd->scsi_done(cmd->scmd);
3344                 megasas_return_cmd(instance, cmd);
3345
3346                 break;
3347
3348         case MFI_CMD_SMP:
3349         case MFI_CMD_STP:
3350         case MFI_CMD_NVME:
3351                 megasas_complete_int_cmd(instance, cmd);
3352                 break;
3353
3354         case MFI_CMD_DCMD:
3355                 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
3356                 /* Check for LD map update */
3357                 if ((opcode == MR_DCMD_LD_MAP_GET_INFO)
3358                         && (cmd->frame->dcmd.mbox.b[1] == 1)) {
3359                         fusion->fast_path_io = 0;
3360                         spin_lock_irqsave(instance->host->host_lock, flags);
3361                         status = cmd->frame->hdr.cmd_status;
3362                         instance->map_update_cmd = NULL;
3363                         if (status != MFI_STAT_OK) {
3364                                 if (status != MFI_STAT_NOT_FOUND)
3365                                         dev_warn(&instance->pdev->dev, "map syncfailed, status = 0x%x\n",
3366                                                cmd->frame->hdr.cmd_status);
3367                                 else {
3368                                         megasas_return_cmd(instance, cmd);
3369                                         spin_unlock_irqrestore(
3370                                                 instance->host->host_lock,
3371                                                 flags);
3372                                         break;
3373                                 }
3374                         }
3375
3376                         megasas_return_cmd(instance, cmd);
3377
3378                         /*
3379                          * Set fast path IO to ZERO.
3380                          * Validate Map will set proper value.
3381                          * Meanwhile all IOs will go as LD IO.
3382                          */
3383                         if (status == MFI_STAT_OK &&
3384                             (MR_ValidateMapInfo(instance, (instance->map_id + 1)))) {
3385                                 instance->map_id++;
3386                                 fusion->fast_path_io = 1;
3387                         } else {
3388                                 fusion->fast_path_io = 0;
3389                         }
3390
3391                         megasas_sync_map_info(instance);
3392                         spin_unlock_irqrestore(instance->host->host_lock,
3393                                                flags);
3394                         break;
3395                 }
3396                 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
3397                     opcode == MR_DCMD_CTRL_EVENT_GET) {
3398                         spin_lock_irqsave(&poll_aen_lock, flags);
3399                         megasas_poll_wait_aen = 0;
3400                         spin_unlock_irqrestore(&poll_aen_lock, flags);
3401                 }
3402
3403                 /* FW has an updated PD sequence */
3404                 if ((opcode == MR_DCMD_SYSTEM_PD_MAP_GET_INFO) &&
3405                         (cmd->frame->dcmd.mbox.b[0] == 1)) {
3406
3407                         spin_lock_irqsave(instance->host->host_lock, flags);
3408                         status = cmd->frame->hdr.cmd_status;
3409                         instance->jbod_seq_cmd = NULL;
3410                         megasas_return_cmd(instance, cmd);
3411
3412                         if (status == MFI_STAT_OK) {
3413                                 instance->pd_seq_map_id++;
3414                                 /* Re-register a pd sync seq num cmd */
3415                                 if (megasas_sync_pd_seq_num(instance, true))
3416                                         instance->use_seqnum_jbod_fp = false;
3417                         } else
3418                                 instance->use_seqnum_jbod_fp = false;
3419
3420                         spin_unlock_irqrestore(instance->host->host_lock, flags);
3421                         break;
3422                 }
3423
3424                 /*
3425                  * See if got an event notification
3426                  */
3427                 if (opcode == MR_DCMD_CTRL_EVENT_WAIT)
3428                         megasas_service_aen(instance, cmd);
3429                 else
3430                         megasas_complete_int_cmd(instance, cmd);
3431
3432                 break;
3433
3434         case MFI_CMD_ABORT:
3435                 /*
3436                  * Cmd issued to abort another cmd returned
3437                  */
3438                 megasas_complete_abort(instance, cmd);
3439                 break;
3440
3441         default:
3442                 dev_info(&instance->pdev->dev, "Unknown command completed! [0x%X]\n",
3443                        hdr->cmd);
3444                 megasas_complete_int_cmd(instance, cmd);
3445                 break;
3446         }
3447 }
3448
3449 /**
3450  * megasas_issue_pending_cmds_again -   issue all pending cmds
3451  *                                      in FW again because of the fw reset
3452  * @instance:                           Adapter soft state
3453  */
3454 static inline void
3455 megasas_issue_pending_cmds_again(struct megasas_instance *instance)
3456 {
3457         struct megasas_cmd *cmd;
3458         struct list_head clist_local;
3459         union megasas_evt_class_locale class_locale;
3460         unsigned long flags;
3461         u32 seq_num;
3462
3463         INIT_LIST_HEAD(&clist_local);
3464         spin_lock_irqsave(&instance->hba_lock, flags);
3465         list_splice_init(&instance->internal_reset_pending_q, &clist_local);
3466         spin_unlock_irqrestore(&instance->hba_lock, flags);
3467
3468         while (!list_empty(&clist_local)) {
3469                 cmd = list_entry((&clist_local)->next,
3470                                         struct megasas_cmd, list);
3471                 list_del_init(&cmd->list);
3472
3473                 if (cmd->sync_cmd || cmd->scmd) {
3474                         dev_notice(&instance->pdev->dev, "command %p, %p:%d"
3475                                 "detected to be pending while HBA reset\n",
3476                                         cmd, cmd->scmd, cmd->sync_cmd);
3477
3478                         cmd->retry_for_fw_reset++;
3479
3480                         if (cmd->retry_for_fw_reset == 3) {
3481                                 dev_notice(&instance->pdev->dev, "cmd %p, %p:%d"
3482                                         "was tried multiple times during reset."
3483                                         "Shutting down the HBA\n",
3484                                         cmd, cmd->scmd, cmd->sync_cmd);
3485                                 instance->instancet->disable_intr(instance);
3486                                 atomic_set(&instance->fw_reset_no_pci_access, 1);
3487                                 megaraid_sas_kill_hba(instance);
3488                                 return;
3489                         }
3490                 }
3491
3492                 if (cmd->sync_cmd == 1) {
3493                         if (cmd->scmd) {
3494                                 dev_notice(&instance->pdev->dev, "unexpected"
3495                                         "cmd attached to internal command!\n");
3496                         }
3497                         dev_notice(&instance->pdev->dev, "%p synchronous cmd"
3498                                                 "on the internal reset queue,"
3499                                                 "issue it again.\n", cmd);
3500                         cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
3501                         instance->instancet->fire_cmd(instance,
3502                                                         cmd->frame_phys_addr,
3503                                                         0, instance->reg_set);
3504                 } else if (cmd->scmd) {
3505                         dev_notice(&instance->pdev->dev, "%p scsi cmd [%02x]"
3506                         "detected on the internal queue, issue again.\n",
3507                         cmd, cmd->scmd->cmnd[0]);
3508
3509                         atomic_inc(&instance->fw_outstanding);
3510                         instance->instancet->fire_cmd(instance,
3511                                         cmd->frame_phys_addr,
3512                                         cmd->frame_count-1, instance->reg_set);
3513                 } else {
3514                         dev_notice(&instance->pdev->dev, "%p unexpected cmd on the"
3515                                 "internal reset defer list while re-issue!!\n",
3516                                 cmd);
3517                 }
3518         }
3519
3520         if (instance->aen_cmd) {
3521                 dev_notice(&instance->pdev->dev, "aen_cmd in def process\n");
3522                 megasas_return_cmd(instance, instance->aen_cmd);
3523
3524                 instance->aen_cmd = NULL;
3525         }
3526
3527         /*
3528          * Initiate AEN (Asynchronous Event Notification)
3529          */
3530         seq_num = instance->last_seq_num;
3531         class_locale.members.reserved = 0;
3532         class_locale.members.locale = MR_EVT_LOCALE_ALL;
3533         class_locale.members.class = MR_EVT_CLASS_DEBUG;
3534
3535         megasas_register_aen(instance, seq_num, class_locale.word);
3536 }
3537
3538 /**
3539  * Move the internal reset pending commands to a deferred queue.
3540  *
3541  * We move the commands pending at internal reset time to a
3542  * pending queue. This queue would be flushed after successful
3543  * completion of the internal reset sequence. if the internal reset
3544  * did not complete in time, the kernel reset handler would flush
3545  * these commands.
3546  **/
3547 static void
3548 megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
3549 {
3550         struct megasas_cmd *cmd;
3551         int i;
3552         u16 max_cmd = instance->max_fw_cmds;
3553         u32 defer_index;
3554         unsigned long flags;
3555
3556         defer_index = 0;
3557         spin_lock_irqsave(&instance->mfi_pool_lock, flags);
3558         for (i = 0; i < max_cmd; i++) {
3559                 cmd = instance->cmd_list[i];
3560                 if (cmd->sync_cmd == 1 || cmd->scmd) {
3561                         dev_notice(&instance->pdev->dev, "moving cmd[%d]:%p:%d:%p"
3562                                         "on the defer queue as internal\n",
3563                                 defer_index, cmd, cmd->sync_cmd, cmd->scmd);
3564
3565                         if (!list_empty(&cmd->list)) {
3566                                 dev_notice(&instance->pdev->dev, "ERROR while"
3567                                         " moving this cmd:%p, %d %p, it was"
3568                                         "discovered on some list?\n",
3569                                         cmd, cmd->sync_cmd, cmd->scmd);
3570
3571                                 list_del_init(&cmd->list);
3572                         }
3573                         defer_index++;
3574                         list_add_tail(&cmd->list,
3575                                 &instance->internal_reset_pending_q);
3576                 }
3577         }
3578         spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
3579 }
3580
3581
3582 static void
3583 process_fw_state_change_wq(struct work_struct *work)
3584 {
3585         struct megasas_instance *instance =
3586                 container_of(work, struct megasas_instance, work_init);
3587         u32 wait;
3588         unsigned long flags;
3589
3590     if (atomic_read(&instance->adprecovery) != MEGASAS_ADPRESET_SM_INFAULT) {
3591                 dev_notice(&instance->pdev->dev, "error, recovery st %x\n",
3592                                 atomic_read(&instance->adprecovery));
3593                 return ;
3594         }
3595
3596         if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
3597                 dev_notice(&instance->pdev->dev, "FW detected to be in fault"
3598                                         "state, restarting it...\n");
3599
3600                 instance->instancet->disable_intr(instance);
3601                 atomic_set(&instance->fw_outstanding, 0);
3602
3603                 atomic_set(&instance->fw_reset_no_pci_access, 1);
3604                 instance->instancet->adp_reset(instance, instance->reg_set);
3605                 atomic_set(&instance->fw_reset_no_pci_access, 0);
3606
3607                 dev_notice(&instance->pdev->dev, "FW restarted successfully,"
3608                                         "initiating next stage...\n");
3609
3610                 dev_notice(&instance->pdev->dev, "HBA recovery state machine,"
3611                                         "state 2 starting...\n");
3612
3613                 /* waiting for about 20 second before start the second init */
3614                 for (wait = 0; wait < 30; wait++) {
3615                         msleep(1000);
3616                 }
3617
3618                 if (megasas_transition_to_ready(instance, 1)) {
3619                         dev_notice(&instance->pdev->dev, "adapter not ready\n");
3620
3621                         atomic_set(&instance->fw_reset_no_pci_access, 1);
3622                         megaraid_sas_kill_hba(instance);
3623                         return ;
3624                 }
3625
3626                 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
3627                         (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
3628                         (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
3629                         ) {
3630                         *instance->consumer = *instance->producer;
3631                 } else {
3632                         *instance->consumer = 0;
3633                         *instance->producer = 0;
3634                 }
3635
3636                 megasas_issue_init_mfi(instance);
3637
3638                 spin_lock_irqsave(&instance->hba_lock, flags);
3639                 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
3640                 spin_unlock_irqrestore(&instance->hba_lock, flags);
3641                 instance->instancet->enable_intr(instance);
3642
3643                 megasas_issue_pending_cmds_again(instance);
3644                 instance->issuepend_done = 1;
3645         }
3646 }
3647
3648 /**
3649  * megasas_deplete_reply_queue -        Processes all completed commands
3650  * @instance:                           Adapter soft state
3651  * @alt_status:                         Alternate status to be returned to
3652  *                                      SCSI mid-layer instead of the status
3653  *                                      returned by the FW
3654  * Note: this must be called with hba lock held
3655  */
3656 static int
3657 megasas_deplete_reply_queue(struct megasas_instance *instance,
3658                                         u8 alt_status)
3659 {
3660         u32 mfiStatus;
3661         u32 fw_state;
3662
3663         if ((mfiStatus = instance->instancet->check_reset(instance,
3664                                         instance->reg_set)) == 1) {
3665                 return IRQ_HANDLED;
3666         }
3667
3668         if ((mfiStatus = instance->instancet->clear_intr(
3669                                                 instance->reg_set)
3670                                                 ) == 0) {
3671                 /* Hardware may not set outbound_intr_status in MSI-X mode */
3672                 if (!instance->msix_vectors)
3673                         return IRQ_NONE;
3674         }
3675
3676         instance->mfiStatus = mfiStatus;
3677
3678         if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
3679                 fw_state = instance->instancet->read_fw_status_reg(
3680                                 instance->reg_set) & MFI_STATE_MASK;
3681
3682                 if (fw_state != MFI_STATE_FAULT) {
3683                         dev_notice(&instance->pdev->dev, "fw state:%x\n",
3684                                                 fw_state);
3685                 }
3686
3687                 if ((fw_state == MFI_STATE_FAULT) &&
3688                                 (instance->disableOnlineCtrlReset == 0)) {
3689                         dev_notice(&instance->pdev->dev, "wait adp restart\n");
3690
3691                         if ((instance->pdev->device ==
3692                                         PCI_DEVICE_ID_LSI_SAS1064R) ||
3693                                 (instance->pdev->device ==
3694                                         PCI_DEVICE_ID_DELL_PERC5) ||
3695                                 (instance->pdev->device ==
3696                                         PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
3697
3698                                 *instance->consumer =
3699                                         cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
3700                         }
3701
3702
3703                         instance->instancet->disable_intr(instance);
3704                         atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
3705                         instance->issuepend_done = 0;
3706
3707                         atomic_set(&instance->fw_outstanding, 0);
3708                         megasas_internal_reset_defer_cmds(instance);
3709
3710                         dev_notice(&instance->pdev->dev, "fwState=%x, stage:%d\n",
3711                                         fw_state, atomic_read(&instance->adprecovery));
3712
3713                         schedule_work(&instance->work_init);
3714                         return IRQ_HANDLED;
3715
3716                 } else {
3717                         dev_notice(&instance->pdev->dev, "fwstate:%x, dis_OCR=%x\n",
3718                                 fw_state, instance->disableOnlineCtrlReset);
3719                 }
3720         }
3721
3722         tasklet_schedule(&instance->isr_tasklet);
3723         return IRQ_HANDLED;
3724 }
3725 /**
3726  * megasas_isr - isr entry point
3727  */
3728 static irqreturn_t megasas_isr(int irq, void *devp)
3729 {
3730         struct megasas_irq_context *irq_context = devp;
3731         struct megasas_instance *instance = irq_context->instance;
3732         unsigned long flags;
3733         irqreturn_t rc;
3734
3735         if (atomic_read(&instance->fw_reset_no_pci_access))
3736                 return IRQ_HANDLED;
3737
3738         spin_lock_irqsave(&instance->hba_lock, flags);
3739         rc = megasas_deplete_reply_queue(instance, DID_OK);
3740         spin_unlock_irqrestore(&instance->hba_lock, flags);
3741
3742         return rc;
3743 }
3744
3745 /**
3746  * megasas_transition_to_ready -        Move the FW to READY state
3747  * @instance:                           Adapter soft state
3748  *
3749  * During the initialization, FW passes can potentially be in any one of
3750  * several possible states. If the FW in operational, waiting-for-handshake
3751  * states, driver must take steps to bring it to ready state. Otherwise, it
3752  * has to wait for the ready state.
3753  */
3754 int
3755 megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
3756 {
3757         int i;
3758         u8 max_wait;
3759         u32 fw_state;
3760         u32 cur_state;
3761         u32 abs_state, curr_abs_state;
3762
3763         abs_state = instance->instancet->read_fw_status_reg(instance->reg_set);
3764         fw_state = abs_state & MFI_STATE_MASK;
3765
3766         if (fw_state != MFI_STATE_READY)
3767                 dev_info(&instance->pdev->dev, "Waiting for FW to come to ready"
3768                        " state\n");
3769
3770         while (fw_state != MFI_STATE_READY) {
3771
3772                 switch (fw_state) {
3773
3774                 case MFI_STATE_FAULT:
3775                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW in FAULT state!!\n");
3776                         if (ocr) {
3777                                 max_wait = MEGASAS_RESET_WAIT_TIME;
3778                                 cur_state = MFI_STATE_FAULT;
3779                                 break;
3780                         } else
3781                                 return -ENODEV;
3782
3783                 case MFI_STATE_WAIT_HANDSHAKE:
3784                         /*
3785                          * Set the CLR bit in inbound doorbell
3786                          */
3787                         if ((instance->pdev->device ==
3788                                 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3789                                 (instance->pdev->device ==
3790                                  PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3791                                 (instance->adapter_type != MFI_SERIES))
3792                                 writel(
3793                                   MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
3794                                   &instance->reg_set->doorbell);
3795                         else
3796                                 writel(
3797                                     MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
3798                                         &instance->reg_set->inbound_doorbell);
3799
3800                         max_wait = MEGASAS_RESET_WAIT_TIME;
3801                         cur_state = MFI_STATE_WAIT_HANDSHAKE;
3802                         break;
3803
3804                 case MFI_STATE_BOOT_MESSAGE_PENDING:
3805                         if ((instance->pdev->device ==
3806                              PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3807                                 (instance->pdev->device ==
3808                                  PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3809                                 (instance->adapter_type != MFI_SERIES))
3810                                 writel(MFI_INIT_HOTPLUG,
3811                                        &instance->reg_set->doorbell);
3812                         else
3813                                 writel(MFI_INIT_HOTPLUG,
3814                                         &instance->reg_set->inbound_doorbell);
3815
3816                         max_wait = MEGASAS_RESET_WAIT_TIME;
3817                         cur_state = MFI_STATE_BOOT_MESSAGE_PENDING;
3818                         break;
3819
3820                 case MFI_STATE_OPERATIONAL:
3821                         /*
3822                          * Bring it to READY state; assuming max wait 10 secs
3823                          */
3824                         instance->instancet->disable_intr(instance);
3825                         if ((instance->pdev->device ==
3826                                 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3827                                 (instance->pdev->device ==
3828                                 PCI_DEVICE_ID_LSI_SAS0071SKINNY)  ||
3829                                 (instance->adapter_type != MFI_SERIES)) {
3830                                 writel(MFI_RESET_FLAGS,
3831                                         &instance->reg_set->doorbell);
3832
3833                                 if (instance->adapter_type != MFI_SERIES) {
3834                                         for (i = 0; i < (10 * 1000); i += 20) {
3835                                                 if (readl(
3836                                                             &instance->
3837                                                             reg_set->
3838                                                             doorbell) & 1)
3839                                                         msleep(20);
3840                                                 else
3841                                                         break;
3842                                         }
3843                                 }
3844                         } else
3845                                 writel(MFI_RESET_FLAGS,
3846                                         &instance->reg_set->inbound_doorbell);
3847
3848                         max_wait = MEGASAS_RESET_WAIT_TIME;
3849                         cur_state = MFI_STATE_OPERATIONAL;
3850                         break;
3851
3852                 case MFI_STATE_UNDEFINED:
3853                         /*
3854                          * This state should not last for more than 2 seconds
3855                          */
3856                         max_wait = MEGASAS_RESET_WAIT_TIME;
3857                         cur_state = MFI_STATE_UNDEFINED;
3858                         break;
3859
3860                 case MFI_STATE_BB_INIT:
3861                         max_wait = MEGASAS_RESET_WAIT_TIME;
3862                         cur_state = MFI_STATE_BB_INIT;
3863                         break;
3864
3865                 case MFI_STATE_FW_INIT:
3866                         max_wait = MEGASAS_RESET_WAIT_TIME;
3867                         cur_state = MFI_STATE_FW_INIT;
3868                         break;
3869
3870                 case MFI_STATE_FW_INIT_2:
3871                         max_wait = MEGASAS_RESET_WAIT_TIME;
3872                         cur_state = MFI_STATE_FW_INIT_2;
3873                         break;
3874
3875                 case MFI_STATE_DEVICE_SCAN:
3876                         max_wait = MEGASAS_RESET_WAIT_TIME;
3877                         cur_state = MFI_STATE_DEVICE_SCAN;
3878                         break;
3879
3880                 case MFI_STATE_FLUSH_CACHE:
3881                         max_wait = MEGASAS_RESET_WAIT_TIME;
3882                         cur_state = MFI_STATE_FLUSH_CACHE;
3883                         break;
3884
3885                 default:
3886                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "Unknown state 0x%x\n",
3887                                fw_state);
3888                         return -ENODEV;
3889                 }
3890
3891                 /*
3892                  * The cur_state should not last for more than max_wait secs
3893                  */
3894                 for (i = 0; i < (max_wait * 1000); i++) {
3895                         curr_abs_state = instance->instancet->
3896                                 read_fw_status_reg(instance->reg_set);
3897
3898                         if (abs_state == curr_abs_state) {
3899                                 msleep(1);
3900                         } else
3901                                 break;
3902                 }
3903
3904                 /*
3905                  * Return error if fw_state hasn't changed after max_wait
3906                  */
3907                 if (curr_abs_state == abs_state) {
3908                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW state [%d] hasn't changed "
3909                                "in %d secs\n", fw_state, max_wait);
3910                         return -ENODEV;
3911                 }
3912
3913                 abs_state = curr_abs_state;
3914                 fw_state = curr_abs_state & MFI_STATE_MASK;
3915         }
3916         dev_info(&instance->pdev->dev, "FW now in Ready state\n");
3917
3918         return 0;
3919 }
3920
3921 /**
3922  * megasas_teardown_frame_pool -        Destroy the cmd frame DMA pool
3923  * @instance:                           Adapter soft state
3924  */
3925 static void megasas_teardown_frame_pool(struct megasas_instance *instance)
3926 {
3927         int i;
3928         u16 max_cmd = instance->max_mfi_cmds;
3929         struct megasas_cmd *cmd;
3930
3931         if (!instance->frame_dma_pool)
3932                 return;
3933
3934         /*
3935          * Return all frames to pool
3936          */
3937         for (i = 0; i < max_cmd; i++) {
3938
3939                 cmd = instance->cmd_list[i];
3940
3941                 if (cmd->frame)
3942                         dma_pool_free(instance->frame_dma_pool, cmd->frame,
3943                                       cmd->frame_phys_addr);
3944
3945                 if (cmd->sense)
3946                         dma_pool_free(instance->sense_dma_pool, cmd->sense,
3947                                       cmd->sense_phys_addr);
3948         }
3949
3950         /*
3951          * Now destroy the pool itself
3952          */
3953         dma_pool_destroy(instance->frame_dma_pool);
3954         dma_pool_destroy(instance->sense_dma_pool);
3955
3956         instance->frame_dma_pool = NULL;
3957         instance->sense_dma_pool = NULL;
3958 }
3959
3960 /**
3961  * megasas_create_frame_pool -  Creates DMA pool for cmd frames
3962  * @instance:                   Adapter soft state
3963  *
3964  * Each command packet has an embedded DMA memory buffer that is used for
3965  * filling MFI frame and the SG list that immediately follows the frame. This
3966  * function creates those DMA memory buffers for each command packet by using
3967  * PCI pool facility.
3968  */
3969 static int megasas_create_frame_pool(struct megasas_instance *instance)
3970 {
3971         int i;
3972         u16 max_cmd;
3973         u32 sge_sz;
3974         u32 frame_count;
3975         struct megasas_cmd *cmd;
3976
3977         max_cmd = instance->max_mfi_cmds;
3978
3979         /*
3980          * Size of our frame is 64 bytes for MFI frame, followed by max SG
3981          * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer
3982          */
3983         sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
3984             sizeof(struct megasas_sge32);
3985
3986         if (instance->flag_ieee)
3987                 sge_sz = sizeof(struct megasas_sge_skinny);
3988
3989         /*
3990          * For MFI controllers.
3991          * max_num_sge = 60
3992          * max_sge_sz  = 16 byte (sizeof megasas_sge_skinny)
3993          * Total 960 byte (15 MFI frame of 64 byte)
3994          *
3995          * Fusion adapter require only 3 extra frame.
3996          * max_num_sge = 16 (defined as MAX_IOCTL_SGE)
3997          * max_sge_sz  = 12 byte (sizeof  megasas_sge64)
3998          * Total 192 byte (3 MFI frame of 64 byte)
3999          */
4000         frame_count = (instance->adapter_type == MFI_SERIES) ?
4001                         (15 + 1) : (3 + 1);
4002         instance->mfi_frame_size = MEGAMFI_FRAME_SIZE * frame_count;
4003         /*
4004          * Use DMA pool facility provided by PCI layer
4005          */
4006         instance->frame_dma_pool = dma_pool_create("megasas frame pool",
4007                                         &instance->pdev->dev,
4008                                         instance->mfi_frame_size, 256, 0);
4009
4010         if (!instance->frame_dma_pool) {
4011                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup frame pool\n");
4012                 return -ENOMEM;
4013         }
4014
4015         instance->sense_dma_pool = dma_pool_create("megasas sense pool",
4016                                                    &instance->pdev->dev, 128,
4017                                                    4, 0);
4018
4019         if (!instance->sense_dma_pool) {
4020                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup sense pool\n");
4021
4022                 dma_pool_destroy(instance->frame_dma_pool);
4023                 instance->frame_dma_pool = NULL;
4024
4025                 return -ENOMEM;
4026         }
4027
4028         /*
4029          * Allocate and attach a frame to each of the commands in cmd_list.
4030          * By making cmd->index as the context instead of the &cmd, we can
4031          * always use 32bit context regardless of the architecture
4032          */
4033         for (i = 0; i < max_cmd; i++) {
4034
4035                 cmd = instance->cmd_list[i];
4036
4037                 cmd->frame = dma_pool_zalloc(instance->frame_dma_pool,
4038                                             GFP_KERNEL, &cmd->frame_phys_addr);
4039
4040                 cmd->sense = dma_pool_alloc(instance->sense_dma_pool,
4041                                             GFP_KERNEL, &cmd->sense_phys_addr);
4042
4043                 /*
4044                  * megasas_teardown_frame_pool() takes care of freeing
4045                  * whatever has been allocated
4046                  */
4047                 if (!cmd->frame || !cmd->sense) {
4048                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "dma_pool_alloc failed\n");
4049                         megasas_teardown_frame_pool(instance);
4050                         return -ENOMEM;
4051                 }
4052
4053                 cmd->frame->io.context = cpu_to_le32(cmd->index);
4054                 cmd->frame->io.pad_0 = 0;
4055                 if ((instance->adapter_type == MFI_SERIES) && reset_devices)
4056                         cmd->frame->hdr.cmd = MFI_CMD_INVALID;
4057         }
4058
4059         return 0;
4060 }
4061
4062 /**
4063  * megasas_free_cmds -  Free all the cmds in the free cmd pool
4064  * @instance:           Adapter soft state
4065  */
4066 void megasas_free_cmds(struct megasas_instance *instance)
4067 {
4068         int i;
4069
4070         /* First free the MFI frame pool */
4071         megasas_teardown_frame_pool(instance);
4072
4073         /* Free all the commands in the cmd_list */
4074         for (i = 0; i < instance->max_mfi_cmds; i++)
4075
4076                 kfree(instance->cmd_list[i]);
4077
4078         /* Free the cmd_list buffer itself */
4079         kfree(instance->cmd_list);
4080         instance->cmd_list = NULL;
4081
4082         INIT_LIST_HEAD(&instance->cmd_pool);
4083 }
4084
4085 /**
4086  * megasas_alloc_cmds - Allocates the command packets
4087  * @instance:           Adapter soft state
4088  *
4089  * Each command that is issued to the FW, whether IO commands from the OS or
4090  * internal commands like IOCTLs, are wrapped in local data structure called
4091  * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
4092  * the FW.
4093  *
4094  * Each frame has a 32-bit field called context (tag). This context is used
4095  * to get back the megasas_cmd from the frame when a frame gets completed in
4096  * the ISR. Typically the address of the megasas_cmd itself would be used as
4097  * the context. But we wanted to keep the differences between 32 and 64 bit
4098  * systems to the mininum. We always use 32 bit integers for the context. In
4099  * this driver, the 32 bit values are the indices into an array cmd_list.
4100  * This array is used only to look up the megasas_cmd given the context. The
4101  * free commands themselves are maintained in a linked list called cmd_pool.
4102  */
4103 int megasas_alloc_cmds(struct megasas_instance *instance)
4104 {
4105         int i;
4106         int j;
4107         u16 max_cmd;
4108         struct megasas_cmd *cmd;
4109
4110         max_cmd = instance->max_mfi_cmds;
4111
4112         /*
4113          * instance->cmd_list is an array of struct megasas_cmd pointers.
4114          * Allocate the dynamic array first and then allocate individual
4115          * commands.
4116          */
4117         instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
4118
4119         if (!instance->cmd_list) {
4120                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "out of memory\n");
4121                 return -ENOMEM;
4122         }
4123
4124         memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd);
4125
4126         for (i = 0; i < max_cmd; i++) {
4127                 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
4128                                                 GFP_KERNEL);
4129
4130                 if (!instance->cmd_list[i]) {
4131
4132                         for (j = 0; j < i; j++)
4133                                 kfree(instance->cmd_list[j]);
4134
4135                         kfree(instance->cmd_list);
4136                         instance->cmd_list = NULL;
4137
4138                         return -ENOMEM;
4139                 }
4140         }
4141
4142         for (i = 0; i < max_cmd; i++) {
4143                 cmd = instance->cmd_list[i];
4144                 memset(cmd, 0, sizeof(struct megasas_cmd));
4145                 cmd->index = i;
4146                 cmd->scmd = NULL;
4147                 cmd->instance = instance;
4148
4149                 list_add_tail(&cmd->list, &instance->cmd_pool);
4150         }
4151
4152         /*
4153          * Create a frame pool and assign one frame to each cmd
4154          */
4155         if (megasas_create_frame_pool(instance)) {
4156                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error creating frame DMA pool\n");
4157                 megasas_free_cmds(instance);
4158         }
4159
4160         return 0;
4161 }
4162
4163 /*
4164  * dcmd_timeout_ocr_possible -  Check if OCR is possible based on Driver/FW state.
4165  * @instance:                           Adapter soft state
4166  *
4167  * Return 0 for only Fusion adapter, if driver load/unload is not in progress
4168  * or FW is not under OCR.
4169  */
4170 inline int
4171 dcmd_timeout_ocr_possible(struct megasas_instance *instance) {
4172
4173         if (instance->adapter_type == MFI_SERIES)
4174                 return KILL_ADAPTER;
4175         else if (instance->unload ||
4176                         test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags))
4177                 return IGNORE_TIMEOUT;
4178         else
4179                 return INITIATE_OCR;
4180 }
4181
4182 static void
4183 megasas_get_pd_info(struct megasas_instance *instance, struct scsi_device *sdev)
4184 {
4185         int ret;
4186         struct megasas_cmd *cmd;
4187         struct megasas_dcmd_frame *dcmd;
4188
4189         struct MR_PRIV_DEVICE *mr_device_priv_data;
4190         u16 device_id = 0;
4191
4192         device_id = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + sdev->id;
4193         cmd = megasas_get_cmd(instance);
4194
4195         if (!cmd) {
4196                 dev_err(&instance->pdev->dev, "Failed to get cmd %s\n", __func__);
4197                 return;
4198         }
4199
4200         dcmd = &cmd->frame->dcmd;
4201
4202         memset(instance->pd_info, 0, sizeof(*instance->pd_info));
4203         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4204
4205         dcmd->mbox.s[0] = cpu_to_le16(device_id);
4206         dcmd->cmd = MFI_CMD_DCMD;
4207         dcmd->cmd_status = 0xFF;
4208         dcmd->sge_count = 1;
4209         dcmd->flags = MFI_FRAME_DIR_READ;
4210         dcmd->timeout = 0;
4211         dcmd->pad_0 = 0;
4212         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_PD_INFO));
4213         dcmd->opcode = cpu_to_le32(MR_DCMD_PD_GET_INFO);
4214
4215         megasas_set_dma_settings(instance, dcmd, instance->pd_info_h,
4216                                  sizeof(struct MR_PD_INFO));
4217
4218         if ((instance->adapter_type != MFI_SERIES) &&
4219             !instance->mask_interrupts)
4220                 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4221         else
4222                 ret = megasas_issue_polled(instance, cmd);
4223
4224         switch (ret) {
4225         case DCMD_SUCCESS:
4226                 mr_device_priv_data = sdev->hostdata;
4227                 le16_to_cpus((u16 *)&instance->pd_info->state.ddf.pdType);
4228                 mr_device_priv_data->interface_type =
4229                                 instance->pd_info->state.ddf.pdType.intf;
4230                 break;
4231
4232         case DCMD_TIMEOUT:
4233
4234                 switch (dcmd_timeout_ocr_possible(instance)) {
4235                 case INITIATE_OCR:
4236                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4237                         megasas_reset_fusion(instance->host,
4238                                 MFI_IO_TIMEOUT_OCR);
4239                         break;
4240                 case KILL_ADAPTER:
4241                         megaraid_sas_kill_hba(instance);
4242                         break;
4243                 case IGNORE_TIMEOUT:
4244                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4245                                 __func__, __LINE__);
4246                         break;
4247                 }
4248
4249                 break;
4250         }
4251
4252         if (ret != DCMD_TIMEOUT)
4253                 megasas_return_cmd(instance, cmd);
4254
4255         return;
4256 }
4257 /*
4258  * megasas_get_pd_list_info -   Returns FW's pd_list structure
4259  * @instance:                           Adapter soft state
4260  * @pd_list:                            pd_list structure
4261  *
4262  * Issues an internal command (DCMD) to get the FW's controller PD
4263  * list structure.  This information is mainly used to find out SYSTEM
4264  * supported by the FW.
4265  */
4266 static int
4267 megasas_get_pd_list(struct megasas_instance *instance)
4268 {
4269         int ret = 0, pd_index = 0;
4270         struct megasas_cmd *cmd;
4271         struct megasas_dcmd_frame *dcmd;
4272         struct MR_PD_LIST *ci;
4273         struct MR_PD_ADDRESS *pd_addr;
4274         dma_addr_t ci_h = 0;
4275
4276         if (instance->pd_list_not_supported) {
4277                 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4278                 "not supported by firmware\n");
4279                 return ret;
4280         }
4281
4282         ci = instance->pd_list_buf;
4283         ci_h = instance->pd_list_buf_h;
4284
4285         cmd = megasas_get_cmd(instance);
4286
4287         if (!cmd) {
4288                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "(get_pd_list): Failed to get cmd\n");
4289                 return -ENOMEM;
4290         }
4291
4292         dcmd = &cmd->frame->dcmd;
4293
4294         memset(ci, 0, sizeof(*ci));
4295         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4296
4297         dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
4298         dcmd->mbox.b[1] = 0;
4299         dcmd->cmd = MFI_CMD_DCMD;
4300         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4301         dcmd->sge_count = 1;
4302         dcmd->flags = MFI_FRAME_DIR_READ;
4303         dcmd->timeout = 0;
4304         dcmd->pad_0 = 0;
4305         dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
4306         dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY);
4307
4308         megasas_set_dma_settings(instance, dcmd, instance->pd_list_buf_h,
4309                                  (MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST)));
4310
4311         if ((instance->adapter_type != MFI_SERIES) &&
4312             !instance->mask_interrupts)
4313                 ret = megasas_issue_blocked_cmd(instance, cmd,
4314                         MFI_IO_TIMEOUT_SECS);
4315         else
4316                 ret = megasas_issue_polled(instance, cmd);
4317
4318         switch (ret) {
4319         case DCMD_FAILED:
4320                 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4321                         "failed/not supported by firmware\n");
4322
4323                 if (instance->adapter_type != MFI_SERIES)
4324                         megaraid_sas_kill_hba(instance);
4325                 else
4326                         instance->pd_list_not_supported = 1;
4327                 break;
4328         case DCMD_TIMEOUT:
4329
4330                 switch (dcmd_timeout_ocr_possible(instance)) {
4331                 case INITIATE_OCR:
4332                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4333                         /*
4334                          * DCMD failed from AEN path.
4335                          * AEN path already hold reset_mutex to avoid PCI access
4336                          * while OCR is in progress.
4337                          */
4338                         mutex_unlock(&instance->reset_mutex);
4339                         megasas_reset_fusion(instance->host,
4340                                                 MFI_IO_TIMEOUT_OCR);
4341                         mutex_lock(&instance->reset_mutex);
4342                         break;
4343                 case KILL_ADAPTER:
4344                         megaraid_sas_kill_hba(instance);
4345                         break;
4346                 case IGNORE_TIMEOUT:
4347                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d \n",
4348                                 __func__, __LINE__);
4349                         break;
4350                 }
4351
4352                 break;
4353
4354         case DCMD_SUCCESS:
4355                 pd_addr = ci->addr;
4356
4357                 if ((le32_to_cpu(ci->count) >
4358                         (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL)))
4359                         break;
4360
4361                 memset(instance->local_pd_list, 0,
4362                                 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
4363
4364                 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) {
4365                         instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid     =
4366                                         le16_to_cpu(pd_addr->deviceId);
4367                         instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType       =
4368                                         pd_addr->scsiDevType;
4369                         instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState      =
4370                                         MR_PD_STATE_SYSTEM;
4371                         pd_addr++;
4372                 }
4373
4374                 memcpy(instance->pd_list, instance->local_pd_list,
4375                         sizeof(instance->pd_list));
4376                 break;
4377
4378         }
4379
4380         if (ret != DCMD_TIMEOUT)
4381                 megasas_return_cmd(instance, cmd);
4382
4383         return ret;
4384 }
4385
4386 /*
4387  * megasas_get_ld_list_info -   Returns FW's ld_list structure
4388  * @instance:                           Adapter soft state
4389  * @ld_list:                            ld_list structure
4390  *
4391  * Issues an internal command (DCMD) to get the FW's controller PD
4392  * list structure.  This information is mainly used to find out SYSTEM
4393  * supported by the FW.
4394  */
4395 static int
4396 megasas_get_ld_list(struct megasas_instance *instance)
4397 {
4398         int ret = 0, ld_index = 0, ids = 0;
4399         struct megasas_cmd *cmd;
4400         struct megasas_dcmd_frame *dcmd;
4401         struct MR_LD_LIST *ci;
4402         dma_addr_t ci_h = 0;
4403         u32 ld_count;
4404
4405         ci = instance->ld_list_buf;
4406         ci_h = instance->ld_list_buf_h;
4407
4408         cmd = megasas_get_cmd(instance);
4409
4410         if (!cmd) {
4411                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_list: Failed to get cmd\n");
4412                 return -ENOMEM;
4413         }
4414
4415         dcmd = &cmd->frame->dcmd;
4416
4417         memset(ci, 0, sizeof(*ci));
4418         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4419
4420         if (instance->supportmax256vd)
4421                 dcmd->mbox.b[0] = 1;
4422         dcmd->cmd = MFI_CMD_DCMD;
4423         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4424         dcmd->sge_count = 1;
4425         dcmd->flags = MFI_FRAME_DIR_READ;
4426         dcmd->timeout = 0;
4427         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST));
4428         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST);
4429         dcmd->pad_0  = 0;
4430
4431         megasas_set_dma_settings(instance, dcmd, ci_h,
4432                                  sizeof(struct MR_LD_LIST));
4433
4434         if ((instance->adapter_type != MFI_SERIES) &&
4435             !instance->mask_interrupts)
4436                 ret = megasas_issue_blocked_cmd(instance, cmd,
4437                         MFI_IO_TIMEOUT_SECS);
4438         else
4439                 ret = megasas_issue_polled(instance, cmd);
4440
4441         ld_count = le32_to_cpu(ci->ldCount);
4442
4443         switch (ret) {
4444         case DCMD_FAILED:
4445                 megaraid_sas_kill_hba(instance);
4446                 break;
4447         case DCMD_TIMEOUT:
4448
4449                 switch (dcmd_timeout_ocr_possible(instance)) {
4450                 case INITIATE_OCR:
4451                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4452                         /*
4453                          * DCMD failed from AEN path.
4454                          * AEN path already hold reset_mutex to avoid PCI access
4455                          * while OCR is in progress.
4456                          */
4457                         mutex_unlock(&instance->reset_mutex);
4458                         megasas_reset_fusion(instance->host,
4459                                                 MFI_IO_TIMEOUT_OCR);
4460                         mutex_lock(&instance->reset_mutex);
4461                         break;
4462                 case KILL_ADAPTER:
4463                         megaraid_sas_kill_hba(instance);
4464                         break;
4465                 case IGNORE_TIMEOUT:
4466                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4467                                 __func__, __LINE__);
4468                         break;
4469                 }
4470
4471                 break;
4472
4473         case DCMD_SUCCESS:
4474                 if (ld_count > instance->fw_supported_vd_count)
4475                         break;
4476
4477                 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
4478
4479                 for (ld_index = 0; ld_index < ld_count; ld_index++) {
4480                         if (ci->ldList[ld_index].state != 0) {
4481                                 ids = ci->ldList[ld_index].ref.targetId;
4482                                 instance->ld_ids[ids] = ci->ldList[ld_index].ref.targetId;
4483                         }
4484                 }
4485
4486                 break;
4487         }
4488
4489         if (ret != DCMD_TIMEOUT)
4490                 megasas_return_cmd(instance, cmd);
4491
4492         return ret;
4493 }
4494
4495 /**
4496  * megasas_ld_list_query -      Returns FW's ld_list structure
4497  * @instance:                           Adapter soft state
4498  * @ld_list:                            ld_list structure
4499  *
4500  * Issues an internal command (DCMD) to get the FW's controller PD
4501  * list structure.  This information is mainly used to find out SYSTEM
4502  * supported by the FW.
4503  */
4504 static int
4505 megasas_ld_list_query(struct megasas_instance *instance, u8 query_type)
4506 {
4507         int ret = 0, ld_index = 0, ids = 0;
4508         struct megasas_cmd *cmd;
4509         struct megasas_dcmd_frame *dcmd;
4510         struct MR_LD_TARGETID_LIST *ci;
4511         dma_addr_t ci_h = 0;
4512         u32 tgtid_count;
4513
4514         ci = instance->ld_targetid_list_buf;
4515         ci_h = instance->ld_targetid_list_buf_h;
4516
4517         cmd = megasas_get_cmd(instance);
4518
4519         if (!cmd) {
4520                 dev_warn(&instance->pdev->dev,
4521                          "megasas_ld_list_query: Failed to get cmd\n");
4522                 return -ENOMEM;
4523         }
4524
4525         dcmd = &cmd->frame->dcmd;
4526
4527         memset(ci, 0, sizeof(*ci));
4528         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4529
4530         dcmd->mbox.b[0] = query_type;
4531         if (instance->supportmax256vd)
4532                 dcmd->mbox.b[2] = 1;
4533
4534         dcmd->cmd = MFI_CMD_DCMD;
4535         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4536         dcmd->sge_count = 1;
4537         dcmd->flags = MFI_FRAME_DIR_READ;
4538         dcmd->timeout = 0;
4539         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
4540         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY);
4541         dcmd->pad_0  = 0;
4542
4543         megasas_set_dma_settings(instance, dcmd, ci_h,
4544                                  sizeof(struct MR_LD_TARGETID_LIST));
4545
4546         if ((instance->adapter_type != MFI_SERIES) &&
4547             !instance->mask_interrupts)
4548                 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4549         else
4550                 ret = megasas_issue_polled(instance, cmd);
4551
4552         switch (ret) {
4553         case DCMD_FAILED:
4554                 dev_info(&instance->pdev->dev,
4555                         "DCMD not supported by firmware - %s %d\n",
4556                                 __func__, __LINE__);
4557                 ret = megasas_get_ld_list(instance);
4558                 break;
4559         case DCMD_TIMEOUT:
4560                 switch (dcmd_timeout_ocr_possible(instance)) {
4561                 case INITIATE_OCR:
4562                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4563                         /*
4564                          * DCMD failed from AEN path.
4565                          * AEN path already hold reset_mutex to avoid PCI access
4566                          * while OCR is in progress.
4567                          */
4568                         mutex_unlock(&instance->reset_mutex);
4569                         megasas_reset_fusion(instance->host,
4570                                                 MFI_IO_TIMEOUT_OCR);
4571                         mutex_lock(&instance->reset_mutex);
4572                         break;
4573                 case KILL_ADAPTER:
4574                         megaraid_sas_kill_hba(instance);
4575                         break;
4576                 case IGNORE_TIMEOUT:
4577                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4578                                 __func__, __LINE__);
4579                         break;
4580                 }
4581
4582                 break;
4583         case DCMD_SUCCESS:
4584                 tgtid_count = le32_to_cpu(ci->count);
4585
4586                 if ((tgtid_count > (instance->fw_supported_vd_count)))
4587                         break;
4588
4589                 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
4590                 for (ld_index = 0; ld_index < tgtid_count; ld_index++) {
4591                         ids = ci->targetId[ld_index];
4592                         instance->ld_ids[ids] = ci->targetId[ld_index];
4593                 }
4594
4595                 break;
4596         }
4597
4598         if (ret != DCMD_TIMEOUT)
4599                 megasas_return_cmd(instance, cmd);
4600
4601         return ret;
4602 }
4603
4604 /*
4605  * megasas_update_ext_vd_details : Update details w.r.t Extended VD
4606  * instance                      : Controller's instance
4607 */
4608 static void megasas_update_ext_vd_details(struct megasas_instance *instance)
4609 {
4610         struct fusion_context *fusion;
4611         u32 ventura_map_sz = 0;
4612
4613         fusion = instance->ctrl_context;
4614         /* For MFI based controllers return dummy success */
4615         if (!fusion)
4616                 return;
4617
4618         instance->supportmax256vd =
4619                 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs;
4620         /* Below is additional check to address future FW enhancement */
4621         if (instance->ctrl_info_buf->max_lds > 64)
4622                 instance->supportmax256vd = 1;
4623
4624         instance->drv_supported_vd_count = MEGASAS_MAX_LD_CHANNELS
4625                                         * MEGASAS_MAX_DEV_PER_CHANNEL;
4626         instance->drv_supported_pd_count = MEGASAS_MAX_PD_CHANNELS
4627                                         * MEGASAS_MAX_DEV_PER_CHANNEL;
4628         if (instance->supportmax256vd) {
4629                 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES_EXT;
4630                 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
4631         } else {
4632                 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
4633                 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
4634         }
4635
4636         dev_info(&instance->pdev->dev,
4637                 "firmware type\t: %s\n",
4638                 instance->supportmax256vd ? "Extended VD(240 VD)firmware" :
4639                 "Legacy(64 VD) firmware");
4640
4641         if (instance->max_raid_mapsize) {
4642                 ventura_map_sz = instance->max_raid_mapsize *
4643                                                 MR_MIN_MAP_SIZE; /* 64k */
4644                 fusion->current_map_sz = ventura_map_sz;
4645                 fusion->max_map_sz = ventura_map_sz;
4646         } else {
4647                 fusion->old_map_sz =  sizeof(struct MR_FW_RAID_MAP) +
4648                                         (sizeof(struct MR_LD_SPAN_MAP) *
4649                                         (instance->fw_supported_vd_count - 1));
4650                 fusion->new_map_sz =  sizeof(struct MR_FW_RAID_MAP_EXT);
4651
4652                 fusion->max_map_sz =
4653                         max(fusion->old_map_sz, fusion->new_map_sz);
4654
4655                 if (instance->supportmax256vd)
4656                         fusion->current_map_sz = fusion->new_map_sz;
4657                 else
4658                         fusion->current_map_sz = fusion->old_map_sz;
4659         }
4660         /* irrespective of FW raid maps, driver raid map is constant */
4661         fusion->drv_map_sz = sizeof(struct MR_DRV_RAID_MAP_ALL);
4662 }
4663
4664 /**
4665  * megasas_get_controller_info -        Returns FW's controller structure
4666  * @instance:                           Adapter soft state
4667  *
4668  * Issues an internal command (DCMD) to get the FW's controller structure.
4669  * This information is mainly used to find out the maximum IO transfer per
4670  * command supported by the FW.
4671  */
4672 int
4673 megasas_get_ctrl_info(struct megasas_instance *instance)
4674 {
4675         int ret = 0;
4676         struct megasas_cmd *cmd;
4677         struct megasas_dcmd_frame *dcmd;
4678         struct megasas_ctrl_info *ci;
4679         dma_addr_t ci_h = 0;
4680
4681         ci = instance->ctrl_info_buf;
4682         ci_h = instance->ctrl_info_buf_h;
4683
4684         cmd = megasas_get_cmd(instance);
4685
4686         if (!cmd) {
4687                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a free cmd\n");
4688                 return -ENOMEM;
4689         }
4690
4691         dcmd = &cmd->frame->dcmd;
4692
4693         memset(ci, 0, sizeof(*ci));
4694         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4695
4696         dcmd->cmd = MFI_CMD_DCMD;
4697         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4698         dcmd->sge_count = 1;
4699         dcmd->flags = MFI_FRAME_DIR_READ;
4700         dcmd->timeout = 0;
4701         dcmd->pad_0 = 0;
4702         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info));
4703         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO);
4704         dcmd->mbox.b[0] = 1;
4705
4706         megasas_set_dma_settings(instance, dcmd, ci_h,
4707                                  sizeof(struct megasas_ctrl_info));
4708
4709         if ((instance->adapter_type != MFI_SERIES) &&
4710             !instance->mask_interrupts) {
4711                 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4712         } else {
4713                 ret = megasas_issue_polled(instance, cmd);
4714                 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4715         }
4716
4717         switch (ret) {
4718         case DCMD_SUCCESS:
4719                 /* Save required controller information in
4720                  * CPU endianness format.
4721                  */
4722                 le32_to_cpus((u32 *)&ci->properties.OnOffProperties);
4723                 le32_to_cpus((u32 *)&ci->adapterOperations2);
4724                 le32_to_cpus((u32 *)&ci->adapterOperations3);
4725                 le16_to_cpus((u16 *)&ci->adapter_operations4);
4726
4727                 /* Update the latest Ext VD info.
4728                  * From Init path, store current firmware details.
4729                  * From OCR path, detect any firmware properties changes.
4730                  * in case of Firmware upgrade without system reboot.
4731                  */
4732                 megasas_update_ext_vd_details(instance);
4733                 instance->use_seqnum_jbod_fp =
4734                         ci->adapterOperations3.useSeqNumJbodFP;
4735                 instance->support_morethan256jbod =
4736                         ci->adapter_operations4.support_pd_map_target_id;
4737                 instance->support_nvme_passthru =
4738                         ci->adapter_operations4.support_nvme_passthru;
4739                 instance->task_abort_tmo = ci->TaskAbortTO;
4740                 instance->max_reset_tmo = ci->MaxResetTO;
4741
4742                 /*Check whether controller is iMR or MR */
4743                 instance->is_imr = (ci->memory_size ? 0 : 1);
4744                 dev_info(&instance->pdev->dev,
4745                         "controller type\t: %s(%dMB)\n",
4746                         instance->is_imr ? "iMR" : "MR",
4747                         le16_to_cpu(ci->memory_size));
4748
4749                 instance->disableOnlineCtrlReset =
4750                         ci->properties.OnOffProperties.disableOnlineCtrlReset;
4751                 instance->secure_jbod_support =
4752                         ci->adapterOperations3.supportSecurityonJBOD;
4753                 dev_info(&instance->pdev->dev, "Online Controller Reset(OCR)\t: %s\n",
4754                         instance->disableOnlineCtrlReset ? "Disabled" : "Enabled");
4755                 dev_info(&instance->pdev->dev, "Secure JBOD support\t: %s\n",
4756                         instance->secure_jbod_support ? "Yes" : "No");
4757                 dev_info(&instance->pdev->dev, "NVMe passthru support\t: %s\n",
4758                          instance->support_nvme_passthru ? "Yes" : "No");
4759                 dev_info(&instance->pdev->dev,
4760                          "FW provided TM TaskAbort/Reset timeout\t: %d secs/%d secs\n",
4761                          instance->task_abort_tmo, instance->max_reset_tmo);
4762
4763                 break;
4764
4765         case DCMD_TIMEOUT:
4766                 switch (dcmd_timeout_ocr_possible(instance)) {
4767                 case INITIATE_OCR:
4768                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4769                         megasas_reset_fusion(instance->host,
4770                                 MFI_IO_TIMEOUT_OCR);
4771                         break;
4772                 case KILL_ADAPTER:
4773                         megaraid_sas_kill_hba(instance);
4774                         break;
4775                 case IGNORE_TIMEOUT:
4776                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4777                                 __func__, __LINE__);
4778                         break;
4779                 }
4780                 break;
4781         case DCMD_FAILED:
4782                 megaraid_sas_kill_hba(instance);
4783                 break;
4784
4785         }
4786
4787         if (ret != DCMD_TIMEOUT)
4788                 megasas_return_cmd(instance, cmd);
4789
4790         return ret;
4791 }
4792
4793 /*
4794  * megasas_set_crash_dump_params -      Sends address of crash dump DMA buffer
4795  *                                      to firmware
4796  *
4797  * @instance:                           Adapter soft state
4798  * @crash_buf_state             -       tell FW to turn ON/OFF crash dump feature
4799                                         MR_CRASH_BUF_TURN_OFF = 0
4800                                         MR_CRASH_BUF_TURN_ON = 1
4801  * @return 0 on success non-zero on failure.
4802  * Issues an internal command (DCMD) to set parameters for crash dump feature.
4803  * Driver will send address of crash dump DMA buffer and set mbox to tell FW
4804  * that driver supports crash dump feature. This DCMD will be sent only if
4805  * crash dump feature is supported by the FW.
4806  *
4807  */
4808 int megasas_set_crash_dump_params(struct megasas_instance *instance,
4809         u8 crash_buf_state)
4810 {
4811         int ret = 0;
4812         struct megasas_cmd *cmd;
4813         struct megasas_dcmd_frame *dcmd;
4814
4815         cmd = megasas_get_cmd(instance);
4816
4817         if (!cmd) {
4818                 dev_err(&instance->pdev->dev, "Failed to get a free cmd\n");
4819                 return -ENOMEM;
4820         }
4821
4822
4823         dcmd = &cmd->frame->dcmd;
4824
4825         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4826         dcmd->mbox.b[0] = crash_buf_state;
4827         dcmd->cmd = MFI_CMD_DCMD;
4828         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4829         dcmd->sge_count = 1;
4830         dcmd->flags = MFI_FRAME_DIR_NONE;
4831         dcmd->timeout = 0;
4832         dcmd->pad_0 = 0;
4833         dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE);
4834         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS);
4835
4836         megasas_set_dma_settings(instance, dcmd, instance->crash_dump_h,
4837                                  CRASH_DMA_BUF_SIZE);
4838
4839         if ((instance->adapter_type != MFI_SERIES) &&
4840             !instance->mask_interrupts)
4841                 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4842         else
4843                 ret = megasas_issue_polled(instance, cmd);
4844
4845         if (ret == DCMD_TIMEOUT) {
4846                 switch (dcmd_timeout_ocr_possible(instance)) {
4847                 case INITIATE_OCR:
4848                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4849                         megasas_reset_fusion(instance->host,
4850                                         MFI_IO_TIMEOUT_OCR);
4851                         break;
4852                 case KILL_ADAPTER:
4853                         megaraid_sas_kill_hba(instance);
4854                         break;
4855                 case IGNORE_TIMEOUT:
4856                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4857                                 __func__, __LINE__);
4858                         break;
4859                 }
4860         } else
4861                 megasas_return_cmd(instance, cmd);
4862
4863         return ret;
4864 }
4865
4866 /**
4867  * megasas_issue_init_mfi -     Initializes the FW
4868  * @instance:           Adapter soft state
4869  *
4870  * Issues the INIT MFI cmd
4871  */
4872 static int
4873 megasas_issue_init_mfi(struct megasas_instance *instance)
4874 {
4875         __le32 context;
4876         struct megasas_cmd *cmd;
4877         struct megasas_init_frame *init_frame;
4878         struct megasas_init_queue_info *initq_info;
4879         dma_addr_t init_frame_h;
4880         dma_addr_t initq_info_h;
4881
4882         /*
4883          * Prepare a init frame. Note the init frame points to queue info
4884          * structure. Each frame has SGL allocated after first 64 bytes. For
4885          * this frame - since we don't need any SGL - we use SGL's space as
4886          * queue info structure
4887          *
4888          * We will not get a NULL command below. We just created the pool.
4889          */
4890         cmd = megasas_get_cmd(instance);
4891
4892         init_frame = (struct megasas_init_frame *)cmd->frame;
4893         initq_info = (struct megasas_init_queue_info *)
4894                 ((unsigned long)init_frame + 64);
4895
4896         init_frame_h = cmd->frame_phys_addr;
4897         initq_info_h = init_frame_h + 64;
4898
4899         context = init_frame->context;
4900         memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
4901         memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
4902         init_frame->context = context;
4903
4904         initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1);
4905         initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h);
4906
4907         initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h);
4908         initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h);
4909
4910         init_frame->cmd = MFI_CMD_INIT;
4911         init_frame->cmd_status = MFI_STAT_INVALID_STATUS;
4912         init_frame->queue_info_new_phys_addr_lo =
4913                 cpu_to_le32(lower_32_bits(initq_info_h));
4914         init_frame->queue_info_new_phys_addr_hi =
4915                 cpu_to_le32(upper_32_bits(initq_info_h));
4916
4917         init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info));
4918
4919         /*
4920          * disable the intr before firing the init frame to FW
4921          */
4922         instance->instancet->disable_intr(instance);
4923
4924         /*
4925          * Issue the init frame in polled mode
4926          */
4927
4928         if (megasas_issue_polled(instance, cmd)) {
4929                 dev_err(&instance->pdev->dev, "Failed to init firmware\n");
4930                 megasas_return_cmd(instance, cmd);
4931                 goto fail_fw_init;
4932         }
4933
4934         megasas_return_cmd(instance, cmd);
4935
4936         return 0;
4937
4938 fail_fw_init:
4939         return -EINVAL;
4940 }
4941
4942 static u32
4943 megasas_init_adapter_mfi(struct megasas_instance *instance)
4944 {
4945         struct megasas_register_set __iomem *reg_set;
4946         u32 context_sz;
4947         u32 reply_q_sz;
4948
4949         reg_set = instance->reg_set;
4950
4951         /*
4952          * Get various operational parameters from status register
4953          */
4954         instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF;
4955         /*
4956          * Reduce the max supported cmds by 1. This is to ensure that the
4957          * reply_q_sz (1 more than the max cmd that driver may send)
4958          * does not exceed max cmds that the FW can support
4959          */
4960         instance->max_fw_cmds = instance->max_fw_cmds-1;
4961         instance->max_mfi_cmds = instance->max_fw_cmds;
4962         instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >>
4963                                         0x10;
4964         /*
4965          * For MFI skinny adapters, MEGASAS_SKINNY_INT_CMDS commands
4966          * are reserved for IOCTL + driver's internal DCMDs.
4967          */
4968         if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4969                 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
4970                 instance->max_scsi_cmds = (instance->max_fw_cmds -
4971                         MEGASAS_SKINNY_INT_CMDS);
4972                 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
4973         } else {
4974                 instance->max_scsi_cmds = (instance->max_fw_cmds -
4975                         MEGASAS_INT_CMDS);
4976                 sema_init(&instance->ioctl_sem, (MEGASAS_MFI_IOCTL_CMDS));
4977         }
4978
4979         instance->cur_can_queue = instance->max_scsi_cmds;
4980         /*
4981          * Create a pool of commands
4982          */
4983         if (megasas_alloc_cmds(instance))
4984                 goto fail_alloc_cmds;
4985
4986         /*
4987          * Allocate memory for reply queue. Length of reply queue should
4988          * be _one_ more than the maximum commands handled by the firmware.
4989          *
4990          * Note: When FW completes commands, it places corresponding contex
4991          * values in this circular reply queue. This circular queue is a fairly
4992          * typical producer-consumer queue. FW is the producer (of completed
4993          * commands) and the driver is the consumer.
4994          */
4995         context_sz = sizeof(u32);
4996         reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
4997
4998         instance->reply_queue = pci_alloc_consistent(instance->pdev,
4999                                                      reply_q_sz,
5000                                                      &instance->reply_queue_h);
5001
5002         if (!instance->reply_queue) {
5003                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Out of DMA mem for reply queue\n");
5004                 goto fail_reply_queue;
5005         }
5006
5007         if (megasas_issue_init_mfi(instance))
5008                 goto fail_fw_init;
5009
5010         if (megasas_get_ctrl_info(instance)) {
5011                 dev_err(&instance->pdev->dev, "(%d): Could get controller info "
5012                         "Fail from %s %d\n", instance->unique_id,
5013                         __func__, __LINE__);
5014                 goto fail_fw_init;
5015         }
5016
5017         instance->fw_support_ieee = 0;
5018         instance->fw_support_ieee =
5019                 (instance->instancet->read_fw_status_reg(reg_set) &
5020                 0x04000000);
5021
5022         dev_notice(&instance->pdev->dev, "megasas_init_mfi: fw_support_ieee=%d",
5023                         instance->fw_support_ieee);
5024
5025         if (instance->fw_support_ieee)
5026                 instance->flag_ieee = 1;
5027
5028         return 0;
5029
5030 fail_fw_init:
5031
5032         pci_free_consistent(instance->pdev, reply_q_sz,
5033                             instance->reply_queue, instance->reply_queue_h);
5034 fail_reply_queue:
5035         megasas_free_cmds(instance);
5036
5037 fail_alloc_cmds:
5038         return 1;
5039 }
5040
5041 /*
5042  * megasas_setup_irqs_ioapic -          register legacy interrupts.
5043  * @instance:                           Adapter soft state
5044  *
5045  * Do not enable interrupt, only setup ISRs.
5046  *
5047  * Return 0 on success.
5048  */
5049 static int
5050 megasas_setup_irqs_ioapic(struct megasas_instance *instance)
5051 {
5052         struct pci_dev *pdev;
5053
5054         pdev = instance->pdev;
5055         instance->irq_context[0].instance = instance;
5056         instance->irq_context[0].MSIxIndex = 0;
5057         if (request_irq(pci_irq_vector(pdev, 0),
5058                         instance->instancet->service_isr, IRQF_SHARED,
5059                         "megasas", &instance->irq_context[0])) {
5060                 dev_err(&instance->pdev->dev,
5061                                 "Failed to register IRQ from %s %d\n",
5062                                 __func__, __LINE__);
5063                 return -1;
5064         }
5065         return 0;
5066 }
5067
5068 /**
5069  * megasas_setup_irqs_msix -            register MSI-x interrupts.
5070  * @instance:                           Adapter soft state
5071  * @is_probe:                           Driver probe check
5072  *
5073  * Do not enable interrupt, only setup ISRs.
5074  *
5075  * Return 0 on success.
5076  */
5077 static int
5078 megasas_setup_irqs_msix(struct megasas_instance *instance, u8 is_probe)
5079 {
5080         int i, j;
5081         struct pci_dev *pdev;
5082
5083         pdev = instance->pdev;
5084
5085         /* Try MSI-x */
5086         for (i = 0; i < instance->msix_vectors; i++) {
5087                 instance->irq_context[i].instance = instance;
5088                 instance->irq_context[i].MSIxIndex = i;
5089                 if (request_irq(pci_irq_vector(pdev, i),
5090                         instance->instancet->service_isr, 0, "megasas",
5091                         &instance->irq_context[i])) {
5092                         dev_err(&instance->pdev->dev,
5093                                 "Failed to register IRQ for vector %d.\n", i);
5094                         for (j = 0; j < i; j++)
5095                                 free_irq(pci_irq_vector(pdev, j),
5096                                          &instance->irq_context[j]);
5097                         /* Retry irq register for IO_APIC*/
5098                         instance->msix_vectors = 0;
5099                         if (is_probe) {
5100                                 pci_free_irq_vectors(instance->pdev);
5101                                 return megasas_setup_irqs_ioapic(instance);
5102                         } else {
5103                                 return -1;
5104                         }
5105                 }
5106         }
5107         return 0;
5108 }
5109
5110 /*
5111  * megasas_destroy_irqs-                unregister interrupts.
5112  * @instance:                           Adapter soft state
5113  * return:                              void
5114  */
5115 static void
5116 megasas_destroy_irqs(struct megasas_instance *instance) {
5117
5118         int i;
5119
5120         if (instance->msix_vectors)
5121                 for (i = 0; i < instance->msix_vectors; i++) {
5122                         free_irq(pci_irq_vector(instance->pdev, i),
5123                                  &instance->irq_context[i]);
5124                 }
5125         else
5126                 free_irq(pci_irq_vector(instance->pdev, 0),
5127                          &instance->irq_context[0]);
5128 }
5129
5130 /**
5131  * megasas_setup_jbod_map -     setup jbod map for FP seq_number.
5132  * @instance:                           Adapter soft state
5133  * @is_probe:                           Driver probe check
5134  *
5135  * Return 0 on success.
5136  */
5137 void
5138 megasas_setup_jbod_map(struct megasas_instance *instance)
5139 {
5140         int i;
5141         struct fusion_context *fusion = instance->ctrl_context;
5142         u32 pd_seq_map_sz;
5143
5144         pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
5145                 (sizeof(struct MR_PD_CFG_SEQ) * (MAX_PHYSICAL_DEVICES - 1));
5146
5147         if (reset_devices || !fusion ||
5148                 !instance->ctrl_info_buf->adapterOperations3.useSeqNumJbodFP) {
5149                 dev_info(&instance->pdev->dev,
5150                         "Jbod map is not supported %s %d\n",
5151                         __func__, __LINE__);
5152                 instance->use_seqnum_jbod_fp = false;
5153                 return;
5154         }
5155
5156         if (fusion->pd_seq_sync[0])
5157                 goto skip_alloc;
5158
5159         for (i = 0; i < JBOD_MAPS_COUNT; i++) {
5160                 fusion->pd_seq_sync[i] = dma_alloc_coherent
5161                         (&instance->pdev->dev, pd_seq_map_sz,
5162                         &fusion->pd_seq_phys[i], GFP_KERNEL);
5163                 if (!fusion->pd_seq_sync[i]) {
5164                         dev_err(&instance->pdev->dev,
5165                                 "Failed to allocate memory from %s %d\n",
5166                                 __func__, __LINE__);
5167                         if (i == 1) {
5168                                 dma_free_coherent(&instance->pdev->dev,
5169                                         pd_seq_map_sz, fusion->pd_seq_sync[0],
5170                                         fusion->pd_seq_phys[0]);
5171                                 fusion->pd_seq_sync[0] = NULL;
5172                         }
5173                         instance->use_seqnum_jbod_fp = false;
5174                         return;
5175                 }
5176         }
5177
5178 skip_alloc:
5179         if (!megasas_sync_pd_seq_num(instance, false) &&
5180                 !megasas_sync_pd_seq_num(instance, true))
5181                 instance->use_seqnum_jbod_fp = true;
5182         else
5183                 instance->use_seqnum_jbod_fp = false;
5184 }
5185
5186 static void megasas_setup_reply_map(struct megasas_instance *instance)
5187 {
5188         const struct cpumask *mask;
5189         unsigned int queue, cpu;
5190
5191         for (queue = 0; queue < instance->msix_vectors; queue++) {
5192                 mask = pci_irq_get_affinity(instance->pdev, queue);
5193                 if (!mask)
5194                         goto fallback;
5195
5196                 for_each_cpu(cpu, mask)
5197                         instance->reply_map[cpu] = queue;
5198         }
5199         return;
5200
5201 fallback:
5202         for_each_possible_cpu(cpu)
5203                 instance->reply_map[cpu] = cpu % instance->msix_vectors;
5204 }
5205
5206 /**
5207  * megasas_init_fw -    Initializes the FW
5208  * @instance:           Adapter soft state
5209  *
5210  * This is the main function for initializing firmware
5211  */
5212
5213 static int megasas_init_fw(struct megasas_instance *instance)
5214 {
5215         u32 max_sectors_1;
5216         u32 max_sectors_2, tmp_sectors, msix_enable;
5217         u32 scratch_pad_2, scratch_pad_3, scratch_pad_4;
5218         resource_size_t base_addr;
5219         struct megasas_register_set __iomem *reg_set;
5220         struct megasas_ctrl_info *ctrl_info = NULL;
5221         unsigned long bar_list;
5222         int i, j, loop, fw_msix_count = 0;
5223         struct IOV_111 *iovPtr;
5224         struct fusion_context *fusion;
5225
5226         fusion = instance->ctrl_context;
5227
5228         /* Find first memory bar */
5229         bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
5230         instance->bar = find_first_bit(&bar_list, BITS_PER_LONG);
5231         if (pci_request_selected_regions(instance->pdev, 1<<instance->bar,
5232                                          "megasas: LSI")) {
5233                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "IO memory region busy!\n");
5234                 return -EBUSY;
5235         }
5236
5237         base_addr = pci_resource_start(instance->pdev, instance->bar);
5238         instance->reg_set = ioremap_nocache(base_addr, 8192);
5239
5240         if (!instance->reg_set) {
5241                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to map IO mem\n");
5242                 goto fail_ioremap;
5243         }
5244
5245         reg_set = instance->reg_set;
5246
5247         if (instance->adapter_type != MFI_SERIES)
5248                 instance->instancet = &megasas_instance_template_fusion;
5249         else {
5250                 switch (instance->pdev->device) {
5251                 case PCI_DEVICE_ID_LSI_SAS1078R:
5252                 case PCI_DEVICE_ID_LSI_SAS1078DE:
5253                         instance->instancet = &megasas_instance_template_ppc;
5254                         break;
5255                 case PCI_DEVICE_ID_LSI_SAS1078GEN2:
5256                 case PCI_DEVICE_ID_LSI_SAS0079GEN2:
5257                         instance->instancet = &megasas_instance_template_gen2;
5258                         break;
5259                 case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
5260                 case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
5261                         instance->instancet = &megasas_instance_template_skinny;
5262                         break;
5263                 case PCI_DEVICE_ID_LSI_SAS1064R:
5264                 case PCI_DEVICE_ID_DELL_PERC5:
5265                 default:
5266                         instance->instancet = &megasas_instance_template_xscale;
5267                         instance->pd_list_not_supported = 1;
5268                         break;
5269                 }
5270         }
5271
5272         if (megasas_transition_to_ready(instance, 0)) {
5273                 atomic_set(&instance->fw_reset_no_pci_access, 1);
5274                 instance->instancet->adp_reset
5275                         (instance, instance->reg_set);
5276                 atomic_set(&instance->fw_reset_no_pci_access, 0);
5277                 dev_info(&instance->pdev->dev,
5278                         "FW restarted successfully from %s!\n",
5279                         __func__);
5280
5281                 /*waitting for about 30 second before retry*/
5282                 ssleep(30);
5283
5284                 if (megasas_transition_to_ready(instance, 0))
5285                         goto fail_ready_state;
5286         }
5287
5288         megasas_init_ctrl_params(instance);
5289
5290         if (megasas_set_dma_mask(instance))
5291                 goto fail_ready_state;
5292
5293         if (megasas_alloc_ctrl_mem(instance))
5294                 goto fail_alloc_dma_buf;
5295
5296         if (megasas_alloc_ctrl_dma_buffers(instance))
5297                 goto fail_alloc_dma_buf;
5298
5299         fusion = instance->ctrl_context;
5300
5301         if (instance->adapter_type == VENTURA_SERIES) {
5302                 scratch_pad_3 =
5303                         readl(&instance->reg_set->outbound_scratch_pad_3);
5304                 instance->max_raid_mapsize = ((scratch_pad_3 >>
5305                         MR_MAX_RAID_MAP_SIZE_OFFSET_SHIFT) &
5306                         MR_MAX_RAID_MAP_SIZE_MASK);
5307         }
5308
5309         /* Check if MSI-X is supported while in ready state */
5310         msix_enable = (instance->instancet->read_fw_status_reg(reg_set) &
5311                        0x4000000) >> 0x1a;
5312         if (msix_enable && !msix_disable) {
5313                 int irq_flags = PCI_IRQ_MSIX;
5314
5315                 scratch_pad_2 = readl
5316                         (&instance->reg_set->outbound_scratch_pad_2);
5317                 /* Check max MSI-X vectors */
5318                 if (fusion) {
5319                         if (instance->adapter_type == THUNDERBOLT_SERIES) {
5320                                 /* Thunderbolt Series*/
5321                                 instance->msix_vectors = (scratch_pad_2
5322                                         & MR_MAX_REPLY_QUEUES_OFFSET) + 1;
5323                                 fw_msix_count = instance->msix_vectors;
5324                         } else { /* Invader series supports more than 8 MSI-x vectors*/
5325                                 instance->msix_vectors = ((scratch_pad_2
5326                                         & MR_MAX_REPLY_QUEUES_EXT_OFFSET)
5327                                         >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1;
5328                                 if (instance->msix_vectors > 16)
5329                                         instance->msix_combined = true;
5330
5331                                 if (rdpq_enable)
5332                                         instance->is_rdpq = (scratch_pad_2 & MR_RDPQ_MODE_OFFSET) ?
5333                                                                 1 : 0;
5334                                 fw_msix_count = instance->msix_vectors;
5335                                 /* Save 1-15 reply post index address to local memory
5336                                  * Index 0 is already saved from reg offset
5337                                  * MPI2_REPLY_POST_HOST_INDEX_OFFSET
5338                                  */
5339                                 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) {
5340                                         instance->reply_post_host_index_addr[loop] =
5341                                                 (u32 __iomem *)
5342                                                 ((u8 __iomem *)instance->reg_set +
5343                                                 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET
5344                                                 + (loop * 0x10));
5345                                 }
5346                         }
5347                         if (msix_vectors)
5348                                 instance->msix_vectors = min(msix_vectors,
5349                                         instance->msix_vectors);
5350                 } else /* MFI adapters */
5351                         instance->msix_vectors = 1;
5352                 /* Don't bother allocating more MSI-X vectors than cpus */
5353                 instance->msix_vectors = min(instance->msix_vectors,
5354                                              (unsigned int)num_online_cpus());
5355                 if (smp_affinity_enable)
5356                         irq_flags |= PCI_IRQ_AFFINITY;
5357                 i = pci_alloc_irq_vectors(instance->pdev, 1,
5358                                           instance->msix_vectors, irq_flags);
5359                 if (i > 0)
5360                         instance->msix_vectors = i;
5361                 else
5362                         instance->msix_vectors = 0;
5363         }
5364         /*
5365          * MSI-X host index 0 is common for all adapter.
5366          * It is used for all MPT based Adapters.
5367          */
5368         if (instance->msix_combined) {
5369                 instance->reply_post_host_index_addr[0] =
5370                                 (u32 *)((u8 *)instance->reg_set +
5371                                 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET);
5372         } else {
5373                 instance->reply_post_host_index_addr[0] =
5374                         (u32 *)((u8 *)instance->reg_set +
5375                         MPI2_REPLY_POST_HOST_INDEX_OFFSET);
5376         }
5377
5378         if (!instance->msix_vectors) {
5379                 i = pci_alloc_irq_vectors(instance->pdev, 1, 1, PCI_IRQ_LEGACY);
5380                 if (i < 0)
5381                         goto fail_setup_irqs;
5382         }
5383
5384         megasas_setup_reply_map(instance);
5385
5386         dev_info(&instance->pdev->dev,
5387                 "firmware supports msix\t: (%d)", fw_msix_count);
5388         dev_info(&instance->pdev->dev,
5389                 "current msix/online cpus\t: (%d/%d)\n",
5390                 instance->msix_vectors, (unsigned int)num_online_cpus());
5391         dev_info(&instance->pdev->dev,
5392                 "RDPQ mode\t: (%s)\n", instance->is_rdpq ? "enabled" : "disabled");
5393
5394         tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
5395                 (unsigned long)instance);
5396
5397         /*
5398          * Below are default value for legacy Firmware.
5399          * non-fusion based controllers
5400          */
5401         instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
5402         instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
5403         /* Get operational params, sge flags, send init cmd to controller */
5404         if (instance->instancet->init_adapter(instance))
5405                 goto fail_init_adapter;
5406
5407         if (instance->adapter_type == VENTURA_SERIES) {
5408                 scratch_pad_4 =
5409                         readl(&instance->reg_set->outbound_scratch_pad_4);
5410                 if ((scratch_pad_4 & MR_NVME_PAGE_SIZE_MASK) >=
5411                         MR_DEFAULT_NVME_PAGE_SHIFT)
5412                         instance->nvme_page_size =
5413                                 (1 << (scratch_pad_4 & MR_NVME_PAGE_SIZE_MASK));
5414
5415                 dev_info(&instance->pdev->dev,
5416                          "NVME page size\t: (%d)\n", instance->nvme_page_size);
5417         }
5418
5419         if (instance->msix_vectors ?
5420                 megasas_setup_irqs_msix(instance, 1) :
5421                 megasas_setup_irqs_ioapic(instance))
5422                 goto fail_init_adapter;
5423
5424         instance->instancet->enable_intr(instance);
5425
5426         dev_info(&instance->pdev->dev, "INIT adapter done\n");
5427
5428         megasas_setup_jbod_map(instance);
5429
5430         /** for passthrough
5431          * the following function will get the PD LIST.
5432          */
5433         memset(instance->pd_list, 0,
5434                 (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)));
5435         if (megasas_get_pd_list(instance) < 0) {
5436                 dev_err(&instance->pdev->dev, "failed to get PD list\n");
5437                 goto fail_get_ld_pd_list;
5438         }
5439
5440         memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
5441
5442         /* stream detection initialization */
5443         if (instance->adapter_type == VENTURA_SERIES) {
5444                 fusion->stream_detect_by_ld =
5445                         kcalloc(MAX_LOGICAL_DRIVES_EXT,
5446                                 sizeof(struct LD_STREAM_DETECT *),
5447                                 GFP_KERNEL);
5448                 if (!fusion->stream_detect_by_ld) {
5449                         dev_err(&instance->pdev->dev,
5450                                 "unable to allocate stream detection for pool of LDs\n");
5451                         goto fail_get_ld_pd_list;
5452                 }
5453                 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i) {
5454                         fusion->stream_detect_by_ld[i] =
5455                                 kzalloc(sizeof(struct LD_STREAM_DETECT),
5456                                 GFP_KERNEL);
5457                         if (!fusion->stream_detect_by_ld[i]) {
5458                                 dev_err(&instance->pdev->dev,
5459                                         "unable to allocate stream detect by LD\n ");
5460                                 for (j = 0; j < i; ++j)
5461                                         kfree(fusion->stream_detect_by_ld[j]);
5462                                 kfree(fusion->stream_detect_by_ld);
5463                                 fusion->stream_detect_by_ld = NULL;
5464                                 goto fail_get_ld_pd_list;
5465                         }
5466                         fusion->stream_detect_by_ld[i]->mru_bit_map
5467                                 = MR_STREAM_BITMAP;
5468                 }
5469         }
5470
5471         if (megasas_ld_list_query(instance,
5472                                   MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
5473                 goto fail_get_ld_pd_list;
5474
5475         /*
5476          * Compute the max allowed sectors per IO: The controller info has two
5477          * limits on max sectors. Driver should use the minimum of these two.
5478          *
5479          * 1 << stripe_sz_ops.min = max sectors per strip
5480          *
5481          * Note that older firmwares ( < FW ver 30) didn't report information
5482          * to calculate max_sectors_1. So the number ended up as zero always.
5483          */
5484         tmp_sectors = 0;
5485         ctrl_info = instance->ctrl_info_buf;
5486
5487         max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
5488                 le16_to_cpu(ctrl_info->max_strips_per_io);
5489         max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size);
5490
5491         tmp_sectors = min_t(u32, max_sectors_1, max_sectors_2);
5492
5493         instance->peerIsPresent = ctrl_info->cluster.peerIsPresent;
5494         instance->passive = ctrl_info->cluster.passive;
5495         memcpy(instance->clusterId, ctrl_info->clusterId, sizeof(instance->clusterId));
5496         instance->UnevenSpanSupport =
5497                 ctrl_info->adapterOperations2.supportUnevenSpans;
5498         if (instance->UnevenSpanSupport) {
5499                 struct fusion_context *fusion = instance->ctrl_context;
5500                 if (MR_ValidateMapInfo(instance, instance->map_id))
5501                         fusion->fast_path_io = 1;
5502                 else
5503                         fusion->fast_path_io = 0;
5504
5505         }
5506         if (ctrl_info->host_interface.SRIOV) {
5507                 instance->requestorId = ctrl_info->iov.requestorId;
5508                 if (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) {
5509                         if (!ctrl_info->adapterOperations2.activePassive)
5510                             instance->PlasmaFW111 = 1;
5511
5512                         dev_info(&instance->pdev->dev, "SR-IOV: firmware type: %s\n",
5513                             instance->PlasmaFW111 ? "1.11" : "new");
5514
5515                         if (instance->PlasmaFW111) {
5516                             iovPtr = (struct IOV_111 *)
5517                                 ((unsigned char *)ctrl_info + IOV_111_OFFSET);
5518                             instance->requestorId = iovPtr->requestorId;
5519                         }
5520                 }
5521                 dev_info(&instance->pdev->dev, "SRIOV: VF requestorId %d\n",
5522                         instance->requestorId);
5523         }
5524
5525         instance->crash_dump_fw_support =
5526                 ctrl_info->adapterOperations3.supportCrashDump;
5527         instance->crash_dump_drv_support =
5528                 (instance->crash_dump_fw_support &&
5529                 instance->crash_dump_buf);
5530         if (instance->crash_dump_drv_support)
5531                 megasas_set_crash_dump_params(instance,
5532                         MR_CRASH_BUF_TURN_OFF);
5533
5534         else {
5535                 if (instance->crash_dump_buf)
5536                         pci_free_consistent(instance->pdev,
5537                                 CRASH_DMA_BUF_SIZE,
5538                                 instance->crash_dump_buf,
5539                                 instance->crash_dump_h);
5540                 instance->crash_dump_buf = NULL;
5541         }
5542
5543
5544         dev_info(&instance->pdev->dev,
5545                 "pci id\t\t: (0x%04x)/(0x%04x)/(0x%04x)/(0x%04x)\n",
5546                 le16_to_cpu(ctrl_info->pci.vendor_id),
5547                 le16_to_cpu(ctrl_info->pci.device_id),
5548                 le16_to_cpu(ctrl_info->pci.sub_vendor_id),
5549                 le16_to_cpu(ctrl_info->pci.sub_device_id));
5550         dev_info(&instance->pdev->dev, "unevenspan support      : %s\n",
5551                 instance->UnevenSpanSupport ? "yes" : "no");
5552         dev_info(&instance->pdev->dev, "firmware crash dump     : %s\n",
5553                 instance->crash_dump_drv_support ? "yes" : "no");
5554         dev_info(&instance->pdev->dev, "jbod sync map           : %s\n",
5555                 instance->use_seqnum_jbod_fp ? "yes" : "no");
5556
5557
5558         instance->max_sectors_per_req = instance->max_num_sge *
5559                                                 SGE_BUFFER_SIZE / 512;
5560         if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
5561                 instance->max_sectors_per_req = tmp_sectors;
5562
5563         /* Check for valid throttlequeuedepth module parameter */
5564         if (throttlequeuedepth &&
5565                         throttlequeuedepth <= instance->max_scsi_cmds)
5566                 instance->throttlequeuedepth = throttlequeuedepth;
5567         else
5568                 instance->throttlequeuedepth =
5569                                 MEGASAS_THROTTLE_QUEUE_DEPTH;
5570
5571         if ((resetwaittime < 1) ||
5572             (resetwaittime > MEGASAS_RESET_WAIT_TIME))
5573                 resetwaittime = MEGASAS_RESET_WAIT_TIME;
5574
5575         if ((scmd_timeout < 10) || (scmd_timeout > MEGASAS_DEFAULT_CMD_TIMEOUT))
5576                 scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
5577
5578         /* Launch SR-IOV heartbeat timer */
5579         if (instance->requestorId) {
5580                 if (!megasas_sriov_start_heartbeat(instance, 1))
5581                         megasas_start_timer(instance);
5582                 else
5583                         instance->skip_heartbeat_timer_del = 1;
5584         }
5585
5586         return 0;
5587
5588 fail_get_ld_pd_list:
5589         instance->instancet->disable_intr(instance);
5590 fail_init_adapter:
5591         megasas_destroy_irqs(instance);
5592 fail_setup_irqs:
5593         if (instance->msix_vectors)
5594                 pci_free_irq_vectors(instance->pdev);
5595         instance->msix_vectors = 0;
5596 fail_alloc_dma_buf:
5597         megasas_free_ctrl_dma_buffers(instance);
5598         megasas_free_ctrl_mem(instance);
5599 fail_ready_state:
5600         iounmap(instance->reg_set);
5601
5602 fail_ioremap:
5603         pci_release_selected_regions(instance->pdev, 1<<instance->bar);
5604
5605         dev_err(&instance->pdev->dev, "Failed from %s %d\n",
5606                 __func__, __LINE__);
5607         return -EINVAL;
5608 }
5609
5610 /**
5611  * megasas_release_mfi -        Reverses the FW initialization
5612  * @instance:                   Adapter soft state
5613  */
5614 static void megasas_release_mfi(struct megasas_instance *instance)
5615 {
5616         u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
5617
5618         if (instance->reply_queue)
5619                 pci_free_consistent(instance->pdev, reply_q_sz,
5620                             instance->reply_queue, instance->reply_queue_h);
5621
5622         megasas_free_cmds(instance);
5623
5624         iounmap(instance->reg_set);
5625
5626         pci_release_selected_regions(instance->pdev, 1<<instance->bar);
5627 }
5628
5629 /**
5630  * megasas_get_seq_num -        Gets latest event sequence numbers
5631  * @instance:                   Adapter soft state
5632  * @eli:                        FW event log sequence numbers information
5633  *
5634  * FW maintains a log of all events in a non-volatile area. Upper layers would
5635  * usually find out the latest sequence number of the events, the seq number at
5636  * the boot etc. They would "read" all the events below the latest seq number
5637  * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
5638  * number), they would subsribe to AEN (asynchronous event notification) and
5639  * wait for the events to happen.
5640  */
5641 static int
5642 megasas_get_seq_num(struct megasas_instance *instance,
5643                     struct megasas_evt_log_info *eli)
5644 {
5645         struct megasas_cmd *cmd;
5646         struct megasas_dcmd_frame *dcmd;
5647         struct megasas_evt_log_info *el_info;
5648         dma_addr_t el_info_h = 0;
5649         int ret;
5650
5651         cmd = megasas_get_cmd(instance);
5652
5653         if (!cmd) {
5654                 return -ENOMEM;
5655         }
5656
5657         dcmd = &cmd->frame->dcmd;
5658         el_info = pci_zalloc_consistent(instance->pdev,
5659                                         sizeof(struct megasas_evt_log_info),
5660                                         &el_info_h);
5661
5662         if (!el_info) {
5663                 megasas_return_cmd(instance, cmd);
5664                 return -ENOMEM;
5665         }
5666
5667         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5668
5669         dcmd->cmd = MFI_CMD_DCMD;
5670         dcmd->cmd_status = 0x0;
5671         dcmd->sge_count = 1;
5672         dcmd->flags = MFI_FRAME_DIR_READ;
5673         dcmd->timeout = 0;
5674         dcmd->pad_0 = 0;
5675         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info));
5676         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO);
5677
5678         megasas_set_dma_settings(instance, dcmd, el_info_h,
5679                                  sizeof(struct megasas_evt_log_info));
5680
5681         ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
5682         if (ret != DCMD_SUCCESS) {
5683                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
5684                         __func__, __LINE__);
5685                 goto dcmd_failed;
5686         }
5687
5688         /*
5689          * Copy the data back into callers buffer
5690          */
5691         eli->newest_seq_num = el_info->newest_seq_num;
5692         eli->oldest_seq_num = el_info->oldest_seq_num;
5693         eli->clear_seq_num = el_info->clear_seq_num;
5694         eli->shutdown_seq_num = el_info->shutdown_seq_num;
5695         eli->boot_seq_num = el_info->boot_seq_num;
5696
5697 dcmd_failed:
5698         pci_free_consistent(instance->pdev, sizeof(struct megasas_evt_log_info),
5699                             el_info, el_info_h);
5700
5701         megasas_return_cmd(instance, cmd);
5702
5703         return ret;
5704 }
5705
5706 /**
5707  * megasas_register_aen -       Registers for asynchronous event notification
5708  * @instance:                   Adapter soft state
5709  * @seq_num:                    The starting sequence number
5710  * @class_locale:               Class of the event
5711  *
5712  * This function subscribes for AEN for events beyond the @seq_num. It requests
5713  * to be notified if and only if the event is of type @class_locale
5714  */
5715 static int
5716 megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
5717                      u32 class_locale_word)
5718 {
5719         int ret_val;
5720         struct megasas_cmd *cmd;
5721         struct megasas_dcmd_frame *dcmd;
5722         union megasas_evt_class_locale curr_aen;
5723         union megasas_evt_class_locale prev_aen;
5724
5725         /*
5726          * If there an AEN pending already (aen_cmd), check if the
5727          * class_locale of that pending AEN is inclusive of the new
5728          * AEN request we currently have. If it is, then we don't have
5729          * to do anything. In other words, whichever events the current
5730          * AEN request is subscribing to, have already been subscribed
5731          * to.
5732          *
5733          * If the old_cmd is _not_ inclusive, then we have to abort
5734          * that command, form a class_locale that is superset of both
5735          * old and current and re-issue to the FW
5736          */
5737
5738         curr_aen.word = class_locale_word;
5739
5740         if (instance->aen_cmd) {
5741
5742                 prev_aen.word =
5743                         le32_to_cpu(instance->aen_cmd->frame->dcmd.mbox.w[1]);
5744
5745                 if ((curr_aen.members.class < MFI_EVT_CLASS_DEBUG) ||
5746                     (curr_aen.members.class > MFI_EVT_CLASS_DEAD)) {
5747                         dev_info(&instance->pdev->dev,
5748                                  "%s %d out of range class %d send by application\n",
5749                                  __func__, __LINE__, curr_aen.members.class);
5750                         return 0;
5751                 }
5752
5753                 /*
5754                  * A class whose enum value is smaller is inclusive of all
5755                  * higher values. If a PROGRESS (= -1) was previously
5756                  * registered, then a new registration requests for higher
5757                  * classes need not be sent to FW. They are automatically
5758                  * included.
5759                  *
5760                  * Locale numbers don't have such hierarchy. They are bitmap
5761                  * values
5762                  */
5763                 if ((prev_aen.members.class <= curr_aen.members.class) &&
5764                     !((prev_aen.members.locale & curr_aen.members.locale) ^
5765                       curr_aen.members.locale)) {
5766                         /*
5767                          * Previously issued event registration includes
5768                          * current request. Nothing to do.
5769                          */
5770                         return 0;
5771                 } else {
5772                         curr_aen.members.locale |= prev_aen.members.locale;
5773
5774                         if (prev_aen.members.class < curr_aen.members.class)
5775                                 curr_aen.members.class = prev_aen.members.class;
5776
5777                         instance->aen_cmd->abort_aen = 1;
5778                         ret_val = megasas_issue_blocked_abort_cmd(instance,
5779                                                                   instance->
5780                                                                   aen_cmd, 30);
5781
5782                         if (ret_val) {
5783                                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to abort "
5784                                        "previous AEN command\n");
5785                                 return ret_val;
5786                         }
5787                 }
5788         }
5789
5790         cmd = megasas_get_cmd(instance);
5791
5792         if (!cmd)
5793                 return -ENOMEM;
5794
5795         dcmd = &cmd->frame->dcmd;
5796
5797         memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
5798
5799         /*
5800          * Prepare DCMD for aen registration
5801          */
5802         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5803
5804         dcmd->cmd = MFI_CMD_DCMD;
5805         dcmd->cmd_status = 0x0;
5806         dcmd->sge_count = 1;
5807         dcmd->flags = MFI_FRAME_DIR_READ;
5808         dcmd->timeout = 0;
5809         dcmd->pad_0 = 0;
5810         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail));
5811         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT);
5812         dcmd->mbox.w[0] = cpu_to_le32(seq_num);
5813         instance->last_seq_num = seq_num;
5814         dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word);
5815
5816         megasas_set_dma_settings(instance, dcmd, instance->evt_detail_h,
5817                                  sizeof(struct megasas_evt_detail));
5818
5819         if (instance->aen_cmd != NULL) {
5820                 megasas_return_cmd(instance, cmd);
5821                 return 0;
5822         }
5823
5824         /*
5825          * Store reference to the cmd used to register for AEN. When an
5826          * application wants us to register for AEN, we have to abort this
5827          * cmd and re-register with a new EVENT LOCALE supplied by that app
5828          */
5829         instance->aen_cmd = cmd;
5830
5831         /*
5832          * Issue the aen registration frame
5833          */
5834         instance->instancet->issue_dcmd(instance, cmd);
5835
5836         return 0;
5837 }
5838
5839 /* megasas_get_target_prop - Send DCMD with below details to firmware.
5840  *
5841  * This DCMD will fetch few properties of LD/system PD defined
5842  * in MR_TARGET_DEV_PROPERTIES. eg. Queue Depth, MDTS value.
5843  *
5844  * DCMD send by drivers whenever new target is added to the OS.
5845  *
5846  * dcmd.opcode         - MR_DCMD_DEV_GET_TARGET_PROP
5847  * dcmd.mbox.b[0]      - DCMD is to be fired for LD or system PD.
5848  *                       0 = system PD, 1 = LD.
5849  * dcmd.mbox.s[1]      - TargetID for LD/system PD.
5850  * dcmd.sge IN         - Pointer to return MR_TARGET_DEV_PROPERTIES.
5851  *
5852  * @instance:           Adapter soft state
5853  * @sdev:               OS provided scsi device
5854  *
5855  * Returns 0 on success non-zero on failure.
5856  */
5857 int
5858 megasas_get_target_prop(struct megasas_instance *instance,
5859                         struct scsi_device *sdev)
5860 {
5861         int ret;
5862         struct megasas_cmd *cmd;
5863         struct megasas_dcmd_frame *dcmd;
5864         u16 targetId = (sdev->channel % 2) + sdev->id;
5865
5866         cmd = megasas_get_cmd(instance);
5867
5868         if (!cmd) {
5869                 dev_err(&instance->pdev->dev,
5870                         "Failed to get cmd %s\n", __func__);
5871                 return -ENOMEM;
5872         }
5873
5874         dcmd = &cmd->frame->dcmd;
5875
5876         memset(instance->tgt_prop, 0, sizeof(*instance->tgt_prop));
5877         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5878         dcmd->mbox.b[0] = MEGASAS_IS_LOGICAL(sdev);
5879
5880         dcmd->mbox.s[1] = cpu_to_le16(targetId);
5881         dcmd->cmd = MFI_CMD_DCMD;
5882         dcmd->cmd_status = 0xFF;
5883         dcmd->sge_count = 1;
5884         dcmd->flags = MFI_FRAME_DIR_READ;
5885         dcmd->timeout = 0;
5886         dcmd->pad_0 = 0;
5887         dcmd->data_xfer_len =
5888                 cpu_to_le32(sizeof(struct MR_TARGET_PROPERTIES));
5889         dcmd->opcode = cpu_to_le32(MR_DCMD_DRV_GET_TARGET_PROP);
5890
5891         megasas_set_dma_settings(instance, dcmd, instance->tgt_prop_h,
5892                                  sizeof(struct MR_TARGET_PROPERTIES));
5893
5894         if ((instance->adapter_type != MFI_SERIES) &&
5895             !instance->mask_interrupts)
5896                 ret = megasas_issue_blocked_cmd(instance,
5897                                                 cmd, MFI_IO_TIMEOUT_SECS);
5898         else
5899                 ret = megasas_issue_polled(instance, cmd);
5900
5901         switch (ret) {
5902         case DCMD_TIMEOUT:
5903                 switch (dcmd_timeout_ocr_possible(instance)) {
5904                 case INITIATE_OCR:
5905                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5906                         megasas_reset_fusion(instance->host,
5907                                              MFI_IO_TIMEOUT_OCR);
5908                         break;
5909                 case KILL_ADAPTER:
5910                         megaraid_sas_kill_hba(instance);
5911                         break;
5912                 case IGNORE_TIMEOUT:
5913                         dev_info(&instance->pdev->dev,
5914                                  "Ignore DCMD timeout: %s %d\n",
5915                                  __func__, __LINE__);
5916                         break;
5917                 }
5918                 break;
5919
5920         default:
5921                 megasas_return_cmd(instance, cmd);
5922         }
5923         if (ret != DCMD_SUCCESS)
5924                 dev_err(&instance->pdev->dev,
5925                         "return from %s %d return value %d\n",
5926                         __func__, __LINE__, ret);
5927
5928         return ret;
5929 }
5930
5931 /**
5932  * megasas_start_aen -  Subscribes to AEN during driver load time
5933  * @instance:           Adapter soft state
5934  */
5935 static int megasas_start_aen(struct megasas_instance *instance)
5936 {
5937         struct megasas_evt_log_info eli;
5938         union megasas_evt_class_locale class_locale;
5939
5940         /*
5941          * Get the latest sequence number from FW
5942          */
5943         memset(&eli, 0, sizeof(eli));
5944
5945         if (megasas_get_seq_num(instance, &eli))
5946                 return -1;
5947
5948         /*
5949          * Register AEN with FW for latest sequence number plus 1
5950          */
5951         class_locale.members.reserved = 0;
5952         class_locale.members.locale = MR_EVT_LOCALE_ALL;
5953         class_locale.members.class = MR_EVT_CLASS_DEBUG;
5954
5955         return megasas_register_aen(instance,
5956                         le32_to_cpu(eli.newest_seq_num) + 1,
5957                         class_locale.word);
5958 }
5959
5960 /**
5961  * megasas_io_attach -  Attaches this driver to SCSI mid-layer
5962  * @instance:           Adapter soft state
5963  */
5964 static int megasas_io_attach(struct megasas_instance *instance)
5965 {
5966         struct Scsi_Host *host = instance->host;
5967
5968         /*
5969          * Export parameters required by SCSI mid-layer
5970          */
5971         host->unique_id = instance->unique_id;
5972         host->can_queue = instance->max_scsi_cmds;
5973         host->this_id = instance->init_id;
5974         host->sg_tablesize = instance->max_num_sge;
5975
5976         if (instance->fw_support_ieee)
5977                 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE;
5978
5979         /*
5980          * Check if the module parameter value for max_sectors can be used
5981          */
5982         if (max_sectors && max_sectors < instance->max_sectors_per_req)
5983                 instance->max_sectors_per_req = max_sectors;
5984         else {
5985                 if (max_sectors) {
5986                         if (((instance->pdev->device ==
5987                                 PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
5988                                 (instance->pdev->device ==
5989                                 PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
5990                                 (max_sectors <= MEGASAS_MAX_SECTORS)) {
5991                                 instance->max_sectors_per_req = max_sectors;
5992                         } else {
5993                         dev_info(&instance->pdev->dev, "max_sectors should be > 0"
5994                                 "and <= %d (or < 1MB for GEN2 controller)\n",
5995                                 instance->max_sectors_per_req);
5996                         }
5997                 }
5998         }
5999
6000         host->max_sectors = instance->max_sectors_per_req;
6001         host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
6002         host->max_channel = MEGASAS_MAX_CHANNELS - 1;
6003         host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
6004         host->max_lun = MEGASAS_MAX_LUN;
6005         host->max_cmd_len = 16;
6006
6007         /*
6008          * Notify the mid-layer about the new controller
6009          */
6010         if (scsi_add_host(host, &instance->pdev->dev)) {
6011                 dev_err(&instance->pdev->dev,
6012                         "Failed to add host from %s %d\n",
6013                         __func__, __LINE__);
6014                 return -ENODEV;
6015         }
6016
6017         return 0;
6018 }
6019
6020 /**
6021  * megasas_set_dma_mask -       Set DMA mask for supported controllers
6022  *
6023  * @instance:           Adapter soft state
6024  * Description:
6025  *
6026  * For Ventura, driver/FW will operate in 64bit DMA addresses.
6027  *
6028  * For invader-
6029  *      By default, driver/FW will operate in 32bit DMA addresses
6030  *      for consistent DMA mapping but if 32 bit consistent
6031  *      DMA mask fails, driver will try with 64 bit consistent
6032  *      mask provided FW is true 64bit DMA capable
6033  *
6034  * For older controllers(Thunderbolt and MFI based adapters)-
6035  *      driver/FW will operate in 32 bit consistent DMA addresses.
6036  */
6037 static int
6038 megasas_set_dma_mask(struct megasas_instance *instance)
6039 {
6040         u64 consistent_mask;
6041         struct pci_dev *pdev;
6042         u32 scratch_pad_2;
6043
6044         pdev = instance->pdev;
6045         consistent_mask = (instance->adapter_type == VENTURA_SERIES) ?
6046                                 DMA_BIT_MASK(64) : DMA_BIT_MASK(32);
6047
6048         if (IS_DMA64) {
6049                 if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)) &&
6050                     dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
6051                         goto fail_set_dma_mask;
6052
6053                 if ((*pdev->dev.dma_mask == DMA_BIT_MASK(64)) &&
6054                     (dma_set_coherent_mask(&pdev->dev, consistent_mask) &&
6055                      dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))) {
6056                         /*
6057                          * If 32 bit DMA mask fails, then try for 64 bit mask
6058                          * for FW capable of handling 64 bit DMA.
6059                          */
6060                         scratch_pad_2 = readl
6061                                 (&instance->reg_set->outbound_scratch_pad_2);
6062
6063                         if (!(scratch_pad_2 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET))
6064                                 goto fail_set_dma_mask;
6065                         else if (dma_set_mask_and_coherent(&pdev->dev,
6066                                                            DMA_BIT_MASK(64)))
6067                                 goto fail_set_dma_mask;
6068                 }
6069         } else if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
6070                 goto fail_set_dma_mask;
6071
6072         if (pdev->dev.coherent_dma_mask == DMA_BIT_MASK(32))
6073                 instance->consistent_mask_64bit = false;
6074         else
6075                 instance->consistent_mask_64bit = true;
6076
6077         dev_info(&pdev->dev, "%s bit DMA mask and %s bit consistent mask\n",
6078                  ((*pdev->dev.dma_mask == DMA_BIT_MASK(64)) ? "64" : "32"),
6079                  (instance->consistent_mask_64bit ? "64" : "32"));
6080
6081         return 0;
6082
6083 fail_set_dma_mask:
6084         dev_err(&pdev->dev, "Failed to set DMA mask\n");
6085         return -1;
6086
6087 }
6088
6089 /*
6090  * megasas_set_adapter_type -   Set adapter type.
6091  *                              Supported controllers can be divided in
6092  *                              4 categories-  enum MR_ADAPTER_TYPE {
6093  *                                                      MFI_SERIES = 1,
6094  *                                                      THUNDERBOLT_SERIES = 2,
6095  *                                                      INVADER_SERIES = 3,
6096  *                                                      VENTURA_SERIES = 4,
6097  *                                              };
6098  * @instance:                   Adapter soft state
6099  * return:                      void
6100  */
6101 static inline void megasas_set_adapter_type(struct megasas_instance *instance)
6102 {
6103         if ((instance->pdev->vendor == PCI_VENDOR_ID_DELL) &&
6104             (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5)) {
6105                 instance->adapter_type = MFI_SERIES;
6106         } else {
6107                 switch (instance->pdev->device) {
6108                 case PCI_DEVICE_ID_LSI_VENTURA:
6109                 case PCI_DEVICE_ID_LSI_CRUSADER:
6110                 case PCI_DEVICE_ID_LSI_HARPOON:
6111                 case PCI_DEVICE_ID_LSI_TOMCAT:
6112                 case PCI_DEVICE_ID_LSI_VENTURA_4PORT:
6113                 case PCI_DEVICE_ID_LSI_CRUSADER_4PORT:
6114                         instance->adapter_type = VENTURA_SERIES;
6115                         break;
6116                 case PCI_DEVICE_ID_LSI_FUSION:
6117                 case PCI_DEVICE_ID_LSI_PLASMA:
6118                         instance->adapter_type = THUNDERBOLT_SERIES;
6119                         break;
6120                 case PCI_DEVICE_ID_LSI_INVADER:
6121                 case PCI_DEVICE_ID_LSI_INTRUDER:
6122                 case PCI_DEVICE_ID_LSI_INTRUDER_24:
6123                 case PCI_DEVICE_ID_LSI_CUTLASS_52:
6124                 case PCI_DEVICE_ID_LSI_CUTLASS_53:
6125                 case PCI_DEVICE_ID_LSI_FURY:
6126                         instance->adapter_type = INVADER_SERIES;
6127                         break;
6128                 default: /* For all other supported controllers */
6129                         instance->adapter_type = MFI_SERIES;
6130                         break;
6131                 }
6132         }
6133 }
6134
6135 static inline int megasas_alloc_mfi_ctrl_mem(struct megasas_instance *instance)
6136 {
6137         instance->producer = pci_alloc_consistent(instance->pdev, sizeof(u32),
6138                                                   &instance->producer_h);
6139         instance->consumer = pci_alloc_consistent(instance->pdev, sizeof(u32),
6140                                                   &instance->consumer_h);
6141
6142         if (!instance->producer || !instance->consumer) {
6143                 dev_err(&instance->pdev->dev,
6144                         "Failed to allocate memory for producer, consumer\n");
6145                 return -1;
6146         }
6147
6148         *instance->producer = 0;
6149         *instance->consumer = 0;
6150         return 0;
6151 }
6152
6153 /**
6154  * megasas_alloc_ctrl_mem -     Allocate per controller memory for core data
6155  *                              structures which are not common across MFI
6156  *                              adapters and fusion adapters.
6157  *                              For MFI based adapters, allocate producer and
6158  *                              consumer buffers. For fusion adapters, allocate
6159  *                              memory for fusion context.
6160  * @instance:                   Adapter soft state
6161  * return:                      0 for SUCCESS
6162  */
6163 static int megasas_alloc_ctrl_mem(struct megasas_instance *instance)
6164 {
6165         instance->reply_map = kcalloc(nr_cpu_ids, sizeof(unsigned int),
6166                                       GFP_KERNEL);
6167         if (!instance->reply_map)
6168                 return -ENOMEM;
6169
6170         switch (instance->adapter_type) {
6171         case MFI_SERIES:
6172                 if (megasas_alloc_mfi_ctrl_mem(instance))
6173                         goto fail;
6174                 break;
6175         case VENTURA_SERIES:
6176         case THUNDERBOLT_SERIES:
6177         case INVADER_SERIES:
6178                 if (megasas_alloc_fusion_context(instance))
6179                         goto fail;
6180                 break;
6181         }
6182
6183         return 0;
6184  fail:
6185         kfree(instance->reply_map);
6186         instance->reply_map = NULL;
6187         return -ENOMEM;
6188 }
6189
6190 /*
6191  * megasas_free_ctrl_mem -      Free fusion context for fusion adapters and
6192  *                              producer, consumer buffers for MFI adapters
6193  *
6194  * @instance -                  Adapter soft instance
6195  *
6196  */
6197 static inline void megasas_free_ctrl_mem(struct megasas_instance *instance)
6198 {
6199         kfree(instance->reply_map);
6200         if (instance->adapter_type == MFI_SERIES) {
6201                 if (instance->producer)
6202                         pci_free_consistent(instance->pdev, sizeof(u32),
6203                                             instance->producer,
6204                                             instance->producer_h);
6205                 if (instance->consumer)
6206                         pci_free_consistent(instance->pdev, sizeof(u32),
6207                                             instance->consumer,
6208                                             instance->consumer_h);
6209         } else {
6210                 megasas_free_fusion_context(instance);
6211         }
6212 }
6213
6214 /**
6215  * megasas_alloc_ctrl_dma_buffers -     Allocate consistent DMA buffers during
6216  *                                      driver load time
6217  *
6218  * @instance-                           Adapter soft instance
6219  * @return-                             O for SUCCESS
6220  */
6221 static inline
6222 int megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance)
6223 {
6224         struct pci_dev *pdev = instance->pdev;
6225         struct fusion_context *fusion = instance->ctrl_context;
6226
6227         instance->evt_detail =
6228                 pci_alloc_consistent(pdev,
6229                                      sizeof(struct megasas_evt_detail),
6230                                      &instance->evt_detail_h);
6231
6232         if (!instance->evt_detail) {
6233                 dev_err(&instance->pdev->dev,
6234                         "Failed to allocate event detail buffer\n");
6235                 return -ENOMEM;
6236         }
6237
6238         if (fusion) {
6239                 fusion->ioc_init_request =
6240                         dma_alloc_coherent(&pdev->dev,
6241                                            sizeof(struct MPI2_IOC_INIT_REQUEST),
6242                                            &fusion->ioc_init_request_phys,
6243                                            GFP_KERNEL);
6244
6245                 if (!fusion->ioc_init_request) {
6246                         dev_err(&pdev->dev,
6247                                 "Failed to allocate PD list buffer\n");
6248                         return -ENOMEM;
6249                 }
6250         }
6251
6252         instance->pd_list_buf =
6253                 pci_alloc_consistent(pdev,
6254                                      MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
6255                                      &instance->pd_list_buf_h);
6256
6257         if (!instance->pd_list_buf) {
6258                 dev_err(&pdev->dev, "Failed to allocate PD list buffer\n");
6259                 return -ENOMEM;
6260         }
6261
6262         instance->ctrl_info_buf =
6263                 pci_alloc_consistent(pdev,
6264                                      sizeof(struct megasas_ctrl_info),
6265                                      &instance->ctrl_info_buf_h);
6266
6267         if (!instance->ctrl_info_buf) {
6268                 dev_err(&pdev->dev,
6269                         "Failed to allocate controller info buffer\n");
6270                 return -ENOMEM;
6271         }
6272
6273         instance->ld_list_buf =
6274                 pci_alloc_consistent(pdev,
6275                                      sizeof(struct MR_LD_LIST),
6276                                      &instance->ld_list_buf_h);
6277
6278         if (!instance->ld_list_buf) {
6279                 dev_err(&pdev->dev, "Failed to allocate LD list buffer\n");
6280                 return -ENOMEM;
6281         }
6282
6283         instance->ld_targetid_list_buf =
6284                 pci_alloc_consistent(pdev,
6285                                      sizeof(struct MR_LD_TARGETID_LIST),
6286                                      &instance->ld_targetid_list_buf_h);
6287
6288         if (!instance->ld_targetid_list_buf) {
6289                 dev_err(&pdev->dev,
6290                         "Failed to allocate LD targetid list buffer\n");
6291                 return -ENOMEM;
6292         }
6293
6294         if (!reset_devices) {
6295                 instance->system_info_buf =
6296                         pci_alloc_consistent(pdev,
6297                                              sizeof(struct MR_DRV_SYSTEM_INFO),
6298                                              &instance->system_info_h);
6299                 instance->pd_info =
6300                         pci_alloc_consistent(pdev,
6301                                              sizeof(struct MR_PD_INFO),
6302                                              &instance->pd_info_h);
6303                 instance->tgt_prop =
6304                         pci_alloc_consistent(pdev,
6305                                              sizeof(struct MR_TARGET_PROPERTIES),
6306                                              &instance->tgt_prop_h);
6307                 instance->crash_dump_buf =
6308                         pci_alloc_consistent(pdev,
6309                                              CRASH_DMA_BUF_SIZE,
6310                                              &instance->crash_dump_h);
6311
6312                 if (!instance->system_info_buf)
6313                         dev_err(&instance->pdev->dev,
6314                                 "Failed to allocate system info buffer\n");
6315
6316                 if (!instance->pd_info)
6317                         dev_err(&instance->pdev->dev,
6318                                 "Failed to allocate pd_info buffer\n");
6319
6320                 if (!instance->tgt_prop)
6321                         dev_err(&instance->pdev->dev,
6322                                 "Failed to allocate tgt_prop buffer\n");
6323
6324                 if (!instance->crash_dump_buf)
6325                         dev_err(&instance->pdev->dev,
6326                                 "Failed to allocate crash dump buffer\n");
6327         }
6328
6329         return 0;
6330 }
6331
6332 /*
6333  * megasas_free_ctrl_dma_buffers -      Free consistent DMA buffers allocated
6334  *                                      during driver load time
6335  *
6336  * @instance-                           Adapter soft instance
6337  *
6338  */
6339 static inline
6340 void megasas_free_ctrl_dma_buffers(struct megasas_instance *instance)
6341 {
6342         struct pci_dev *pdev = instance->pdev;
6343         struct fusion_context *fusion = instance->ctrl_context;
6344
6345         if (instance->evt_detail)
6346                 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
6347                                     instance->evt_detail,
6348                                     instance->evt_detail_h);
6349
6350         if (fusion && fusion->ioc_init_request)
6351                 dma_free_coherent(&pdev->dev,
6352                                   sizeof(struct MPI2_IOC_INIT_REQUEST),
6353                                   fusion->ioc_init_request,
6354                                   fusion->ioc_init_request_phys);
6355
6356         if (instance->pd_list_buf)
6357                 pci_free_consistent(pdev,
6358                                     MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
6359                                     instance->pd_list_buf,
6360                                     instance->pd_list_buf_h);
6361
6362         if (instance->ld_list_buf)
6363                 pci_free_consistent(pdev, sizeof(struct MR_LD_LIST),
6364                                     instance->ld_list_buf,
6365                                     instance->ld_list_buf_h);
6366
6367         if (instance->ld_targetid_list_buf)
6368                 pci_free_consistent(pdev, sizeof(struct MR_LD_TARGETID_LIST),
6369                                     instance->ld_targetid_list_buf,
6370                                     instance->ld_targetid_list_buf_h);
6371
6372         if (instance->ctrl_info_buf)
6373                 pci_free_consistent(pdev, sizeof(struct megasas_ctrl_info),
6374                                     instance->ctrl_info_buf,
6375                                     instance->ctrl_info_buf_h);
6376
6377         if (instance->system_info_buf)
6378                 pci_free_consistent(pdev, sizeof(struct MR_DRV_SYSTEM_INFO),
6379                                     instance->system_info_buf,
6380                                     instance->system_info_h);
6381
6382         if (instance->pd_info)
6383                 pci_free_consistent(pdev, sizeof(struct MR_PD_INFO),
6384                                     instance->pd_info, instance->pd_info_h);
6385
6386         if (instance->tgt_prop)
6387                 pci_free_consistent(pdev, sizeof(struct MR_TARGET_PROPERTIES),
6388                                     instance->tgt_prop, instance->tgt_prop_h);
6389
6390         if (instance->crash_dump_buf)
6391                 pci_free_consistent(pdev, CRASH_DMA_BUF_SIZE,
6392                                     instance->crash_dump_buf,
6393                                     instance->crash_dump_h);
6394 }
6395
6396 /*
6397  * megasas_init_ctrl_params -           Initialize controller's instance
6398  *                                      parameters before FW init
6399  * @instance -                          Adapter soft instance
6400  * @return -                            void
6401  */
6402 static inline void megasas_init_ctrl_params(struct megasas_instance *instance)
6403 {
6404         instance->fw_crash_state = UNAVAILABLE;
6405
6406         megasas_poll_wait_aen = 0;
6407         instance->issuepend_done = 1;
6408         atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
6409
6410         /*
6411          * Initialize locks and queues
6412          */
6413         INIT_LIST_HEAD(&instance->cmd_pool);
6414         INIT_LIST_HEAD(&instance->internal_reset_pending_q);
6415
6416         atomic_set(&instance->fw_outstanding, 0);
6417
6418         init_waitqueue_head(&instance->int_cmd_wait_q);
6419         init_waitqueue_head(&instance->abort_cmd_wait_q);
6420
6421         spin_lock_init(&instance->crashdump_lock);
6422         spin_lock_init(&instance->mfi_pool_lock);
6423         spin_lock_init(&instance->hba_lock);
6424         spin_lock_init(&instance->stream_lock);
6425         spin_lock_init(&instance->completion_lock);
6426
6427         mutex_init(&instance->reset_mutex);
6428
6429         if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
6430             (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY))
6431                 instance->flag_ieee = 1;
6432
6433         megasas_dbg_lvl = 0;
6434         instance->flag = 0;
6435         instance->unload = 1;
6436         instance->last_time = 0;
6437         instance->disableOnlineCtrlReset = 1;
6438         instance->UnevenSpanSupport = 0;
6439
6440         if (instance->adapter_type != MFI_SERIES) {
6441                 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
6442                 INIT_WORK(&instance->crash_init, megasas_fusion_crash_dump_wq);
6443         } else {
6444                 INIT_WORK(&instance->work_init, process_fw_state_change_wq);
6445         }
6446 }
6447
6448 /**
6449  * megasas_probe_one -  PCI hotplug entry point
6450  * @pdev:               PCI device structure
6451  * @id:                 PCI ids of supported hotplugged adapter
6452  */
6453 static int megasas_probe_one(struct pci_dev *pdev,
6454                              const struct pci_device_id *id)
6455 {
6456         int rval, pos;
6457         struct Scsi_Host *host;
6458         struct megasas_instance *instance;
6459         u16 control = 0;
6460
6461         /* Reset MSI-X in the kdump kernel */
6462         if (reset_devices) {
6463                 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
6464                 if (pos) {
6465                         pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS,
6466                                              &control);
6467                         if (control & PCI_MSIX_FLAGS_ENABLE) {
6468                                 dev_info(&pdev->dev, "resetting MSI-X\n");
6469                                 pci_write_config_word(pdev,
6470                                                       pos + PCI_MSIX_FLAGS,
6471                                                       control &
6472                                                       ~PCI_MSIX_FLAGS_ENABLE);
6473                         }
6474                 }
6475         }
6476
6477         /*
6478          * PCI prepping: enable device set bus mastering and dma mask
6479          */
6480         rval = pci_enable_device_mem(pdev);
6481
6482         if (rval) {
6483                 return rval;
6484         }
6485
6486         pci_set_master(pdev);
6487
6488         host = scsi_host_alloc(&megasas_template,
6489                                sizeof(struct megasas_instance));
6490
6491         if (!host) {
6492                 dev_printk(KERN_DEBUG, &pdev->dev, "scsi_host_alloc failed\n");
6493                 goto fail_alloc_instance;
6494         }
6495
6496         instance = (struct megasas_instance *)host->hostdata;
6497         memset(instance, 0, sizeof(*instance));
6498         atomic_set(&instance->fw_reset_no_pci_access, 0);
6499
6500         /*
6501          * Initialize PCI related and misc parameters
6502          */
6503         instance->pdev = pdev;
6504         instance->host = host;
6505         instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
6506         instance->init_id = MEGASAS_DEFAULT_INIT_ID;
6507
6508         megasas_set_adapter_type(instance);
6509
6510         /*
6511          * Initialize MFI Firmware
6512          */
6513         if (megasas_init_fw(instance))
6514                 goto fail_init_mfi;
6515
6516         if (instance->requestorId) {
6517                 if (instance->PlasmaFW111) {
6518                         instance->vf_affiliation_111 =
6519                                 pci_alloc_consistent(pdev, sizeof(struct MR_LD_VF_AFFILIATION_111),
6520                                                      &instance->vf_affiliation_111_h);
6521                         if (!instance->vf_affiliation_111)
6522                                 dev_warn(&pdev->dev, "Can't allocate "
6523                                        "memory for VF affiliation buffer\n");
6524                 } else {
6525                         instance->vf_affiliation =
6526                                 pci_alloc_consistent(pdev,
6527                                                      (MAX_LOGICAL_DRIVES + 1) *
6528                                                      sizeof(struct MR_LD_VF_AFFILIATION),
6529                                                      &instance->vf_affiliation_h);
6530                         if (!instance->vf_affiliation)
6531                                 dev_warn(&pdev->dev, "Can't allocate "
6532                                        "memory for VF affiliation buffer\n");
6533                 }
6534         }
6535
6536         /*
6537          * Store instance in PCI softstate
6538          */
6539         pci_set_drvdata(pdev, instance);
6540
6541         /*
6542          * Add this controller to megasas_mgmt_info structure so that it
6543          * can be exported to management applications
6544          */
6545         megasas_mgmt_info.count++;
6546         megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
6547         megasas_mgmt_info.max_index++;
6548
6549         /*
6550          * Register with SCSI mid-layer
6551          */
6552         if (megasas_io_attach(instance))
6553                 goto fail_io_attach;
6554
6555         instance->unload = 0;
6556         /*
6557          * Trigger SCSI to scan our drives
6558          */
6559         scsi_scan_host(host);
6560
6561         /*
6562          * Initiate AEN (Asynchronous Event Notification)
6563          */
6564         if (megasas_start_aen(instance)) {
6565                 dev_printk(KERN_DEBUG, &pdev->dev, "start aen failed\n");
6566                 goto fail_start_aen;
6567         }
6568
6569         /* Get current SR-IOV LD/VF affiliation */
6570         if (instance->requestorId)
6571                 megasas_get_ld_vf_affiliation(instance, 1);
6572
6573         return 0;
6574
6575 fail_start_aen:
6576 fail_io_attach:
6577         megasas_mgmt_info.count--;
6578         megasas_mgmt_info.max_index--;
6579         megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
6580
6581         instance->instancet->disable_intr(instance);
6582         megasas_destroy_irqs(instance);
6583
6584         if (instance->adapter_type != MFI_SERIES)
6585                 megasas_release_fusion(instance);
6586         else
6587                 megasas_release_mfi(instance);
6588         if (instance->msix_vectors)
6589                 pci_free_irq_vectors(instance->pdev);
6590 fail_init_mfi:
6591         scsi_host_put(host);
6592 fail_alloc_instance:
6593         pci_disable_device(pdev);
6594
6595         return -ENODEV;
6596 }
6597
6598 /**
6599  * megasas_flush_cache -        Requests FW to flush all its caches
6600  * @instance:                   Adapter soft state
6601  */
6602 static void megasas_flush_cache(struct megasas_instance *instance)
6603 {
6604         struct megasas_cmd *cmd;
6605         struct megasas_dcmd_frame *dcmd;
6606
6607         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
6608                 return;
6609
6610         cmd = megasas_get_cmd(instance);
6611
6612         if (!cmd)
6613                 return;
6614
6615         dcmd = &cmd->frame->dcmd;
6616
6617         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6618
6619         dcmd->cmd = MFI_CMD_DCMD;
6620         dcmd->cmd_status = 0x0;
6621         dcmd->sge_count = 0;
6622         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
6623         dcmd->timeout = 0;
6624         dcmd->pad_0 = 0;
6625         dcmd->data_xfer_len = 0;
6626         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH);
6627         dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
6628
6629         if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
6630                         != DCMD_SUCCESS) {
6631                 dev_err(&instance->pdev->dev,
6632                         "return from %s %d\n", __func__, __LINE__);
6633                 return;
6634         }
6635
6636         megasas_return_cmd(instance, cmd);
6637 }
6638
6639 /**
6640  * megasas_shutdown_controller -        Instructs FW to shutdown the controller
6641  * @instance:                           Adapter soft state
6642  * @opcode:                             Shutdown/Hibernate
6643  */
6644 static void megasas_shutdown_controller(struct megasas_instance *instance,
6645                                         u32 opcode)
6646 {
6647         struct megasas_cmd *cmd;
6648         struct megasas_dcmd_frame *dcmd;
6649
6650         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
6651                 return;
6652
6653         cmd = megasas_get_cmd(instance);
6654
6655         if (!cmd)
6656                 return;
6657
6658         if (instance->aen_cmd)
6659                 megasas_issue_blocked_abort_cmd(instance,
6660                         instance->aen_cmd, MFI_IO_TIMEOUT_SECS);
6661         if (instance->map_update_cmd)
6662                 megasas_issue_blocked_abort_cmd(instance,
6663                         instance->map_update_cmd, MFI_IO_TIMEOUT_SECS);
6664         if (instance->jbod_seq_cmd)
6665                 megasas_issue_blocked_abort_cmd(instance,
6666                         instance->jbod_seq_cmd, MFI_IO_TIMEOUT_SECS);
6667
6668         dcmd = &cmd->frame->dcmd;
6669
6670         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6671
6672         dcmd->cmd = MFI_CMD_DCMD;
6673         dcmd->cmd_status = 0x0;
6674         dcmd->sge_count = 0;
6675         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
6676         dcmd->timeout = 0;
6677         dcmd->pad_0 = 0;
6678         dcmd->data_xfer_len = 0;
6679         dcmd->opcode = cpu_to_le32(opcode);
6680
6681         if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
6682                         != DCMD_SUCCESS) {
6683                 dev_err(&instance->pdev->dev,
6684                         "return from %s %d\n", __func__, __LINE__);
6685                 return;
6686         }
6687
6688         megasas_return_cmd(instance, cmd);
6689 }
6690
6691 #ifdef CONFIG_PM
6692 /**
6693  * megasas_suspend -    driver suspend entry point
6694  * @pdev:               PCI device structure
6695  * @state:              PCI power state to suspend routine
6696  */
6697 static int
6698 megasas_suspend(struct pci_dev *pdev, pm_message_t state)
6699 {
6700         struct Scsi_Host *host;
6701         struct megasas_instance *instance;
6702
6703         instance = pci_get_drvdata(pdev);
6704         host = instance->host;
6705         instance->unload = 1;
6706
6707         /* Shutdown SR-IOV heartbeat timer */
6708         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
6709                 del_timer_sync(&instance->sriov_heartbeat_timer);
6710
6711         megasas_flush_cache(instance);
6712         megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
6713
6714         /* cancel the delayed work if this work still in queue */
6715         if (instance->ev != NULL) {
6716                 struct megasas_aen_event *ev = instance->ev;
6717                 cancel_delayed_work_sync(&ev->hotplug_work);
6718                 instance->ev = NULL;
6719         }
6720
6721         tasklet_kill(&instance->isr_tasklet);
6722
6723         pci_set_drvdata(instance->pdev, instance);
6724         instance->instancet->disable_intr(instance);
6725
6726         megasas_destroy_irqs(instance);
6727
6728         if (instance->msix_vectors)
6729                 pci_free_irq_vectors(instance->pdev);
6730
6731         pci_save_state(pdev);
6732         pci_disable_device(pdev);
6733
6734         pci_set_power_state(pdev, pci_choose_state(pdev, state));
6735
6736         return 0;
6737 }
6738
6739 /**
6740  * megasas_resume-      driver resume entry point
6741  * @pdev:               PCI device structure
6742  */
6743 static int
6744 megasas_resume(struct pci_dev *pdev)
6745 {
6746         int rval;
6747         struct Scsi_Host *host;
6748         struct megasas_instance *instance;
6749         int irq_flags = PCI_IRQ_LEGACY;
6750
6751         instance = pci_get_drvdata(pdev);
6752         host = instance->host;
6753         pci_set_power_state(pdev, PCI_D0);
6754         pci_enable_wake(pdev, PCI_D0, 0);
6755         pci_restore_state(pdev);
6756
6757         /*
6758          * PCI prepping: enable device set bus mastering and dma mask
6759          */
6760         rval = pci_enable_device_mem(pdev);
6761
6762         if (rval) {
6763                 dev_err(&pdev->dev, "Enable device failed\n");
6764                 return rval;
6765         }
6766
6767         pci_set_master(pdev);
6768
6769         /*
6770          * We expect the FW state to be READY
6771          */
6772         if (megasas_transition_to_ready(instance, 0))
6773                 goto fail_ready_state;
6774
6775         if (megasas_set_dma_mask(instance))
6776                 goto fail_set_dma_mask;
6777
6778         /*
6779          * Initialize MFI Firmware
6780          */
6781
6782         atomic_set(&instance->fw_outstanding, 0);
6783         atomic_set(&instance->ldio_outstanding, 0);
6784
6785         /* Now re-enable MSI-X */
6786         if (instance->msix_vectors) {
6787                 irq_flags = PCI_IRQ_MSIX;
6788                 if (smp_affinity_enable)
6789                         irq_flags |= PCI_IRQ_AFFINITY;
6790         }
6791         rval = pci_alloc_irq_vectors(instance->pdev, 1,
6792                                      instance->msix_vectors ?
6793                                      instance->msix_vectors : 1, irq_flags);
6794         if (rval < 0)
6795                 goto fail_reenable_msix;
6796
6797         megasas_setup_reply_map(instance);
6798
6799         if (instance->adapter_type != MFI_SERIES) {
6800                 megasas_reset_reply_desc(instance);
6801                 if (megasas_ioc_init_fusion(instance)) {
6802                         megasas_free_cmds(instance);
6803                         megasas_free_cmds_fusion(instance);
6804                         goto fail_init_mfi;
6805                 }
6806                 if (!megasas_get_map_info(instance))
6807                         megasas_sync_map_info(instance);
6808         } else {
6809                 *instance->producer = 0;
6810                 *instance->consumer = 0;
6811                 if (megasas_issue_init_mfi(instance))
6812                         goto fail_init_mfi;
6813         }
6814
6815         if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS)
6816                 goto fail_init_mfi;
6817
6818         tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
6819                      (unsigned long)instance);
6820
6821         if (instance->msix_vectors ?
6822                         megasas_setup_irqs_msix(instance, 0) :
6823                         megasas_setup_irqs_ioapic(instance))
6824                 goto fail_init_mfi;
6825
6826         /* Re-launch SR-IOV heartbeat timer */
6827         if (instance->requestorId) {
6828                 if (!megasas_sriov_start_heartbeat(instance, 0))
6829                         megasas_start_timer(instance);
6830                 else {
6831                         instance->skip_heartbeat_timer_del = 1;
6832                         goto fail_init_mfi;
6833                 }
6834         }
6835
6836         instance->instancet->enable_intr(instance);
6837         megasas_setup_jbod_map(instance);
6838         instance->unload = 0;
6839
6840         /*
6841          * Initiate AEN (Asynchronous Event Notification)
6842          */
6843         if (megasas_start_aen(instance))
6844                 dev_err(&instance->pdev->dev, "Start AEN failed\n");
6845
6846         return 0;
6847
6848 fail_init_mfi:
6849         megasas_free_ctrl_dma_buffers(instance);
6850         megasas_free_ctrl_mem(instance);
6851         scsi_host_put(host);
6852
6853 fail_reenable_msix:
6854 fail_set_dma_mask:
6855 fail_ready_state:
6856
6857         pci_disable_device(pdev);
6858
6859         return -ENODEV;
6860 }
6861 #else
6862 #define megasas_suspend NULL
6863 #define megasas_resume  NULL
6864 #endif
6865
6866 static inline int
6867 megasas_wait_for_adapter_operational(struct megasas_instance *instance)
6868 {
6869         int wait_time = MEGASAS_RESET_WAIT_TIME * 2;
6870         int i;
6871         u8 adp_state;
6872
6873         for (i = 0; i < wait_time; i++) {
6874                 adp_state = atomic_read(&instance->adprecovery);
6875                 if ((adp_state == MEGASAS_HBA_OPERATIONAL) ||
6876                     (adp_state == MEGASAS_HW_CRITICAL_ERROR))
6877                         break;
6878
6879                 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL))
6880                         dev_notice(&instance->pdev->dev, "waiting for controller reset to finish\n");
6881
6882                 msleep(1000);
6883         }
6884
6885         if (adp_state != MEGASAS_HBA_OPERATIONAL) {
6886                 dev_info(&instance->pdev->dev,
6887                          "%s HBA failed to become operational, adp_state %d\n",
6888                          __func__, adp_state);
6889                 return 1;
6890         }
6891
6892         return 0;
6893 }
6894
6895 /**
6896  * megasas_detach_one - PCI hot"un"plug entry point
6897  * @pdev:               PCI device structure
6898  */
6899 static void megasas_detach_one(struct pci_dev *pdev)
6900 {
6901         int i;
6902         struct Scsi_Host *host;
6903         struct megasas_instance *instance;
6904         struct fusion_context *fusion;
6905         u32 pd_seq_map_sz;
6906
6907         instance = pci_get_drvdata(pdev);
6908         host = instance->host;
6909         fusion = instance->ctrl_context;
6910
6911         /* Shutdown SR-IOV heartbeat timer */
6912         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
6913                 del_timer_sync(&instance->sriov_heartbeat_timer);
6914
6915         if (instance->fw_crash_state != UNAVAILABLE)
6916                 megasas_free_host_crash_buffer(instance);
6917         scsi_remove_host(instance->host);
6918         instance->unload = 1;
6919
6920         if (megasas_wait_for_adapter_operational(instance))
6921                 goto skip_firing_dcmds;
6922
6923         megasas_flush_cache(instance);
6924         megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
6925
6926 skip_firing_dcmds:
6927         /* cancel the delayed work if this work still in queue*/
6928         if (instance->ev != NULL) {
6929                 struct megasas_aen_event *ev = instance->ev;
6930                 cancel_delayed_work_sync(&ev->hotplug_work);
6931                 instance->ev = NULL;
6932         }
6933
6934         /* cancel all wait events */
6935         wake_up_all(&instance->int_cmd_wait_q);
6936
6937         tasklet_kill(&instance->isr_tasklet);
6938
6939         /*
6940          * Take the instance off the instance array. Note that we will not
6941          * decrement the max_index. We let this array be sparse array
6942          */
6943         for (i = 0; i < megasas_mgmt_info.max_index; i++) {
6944                 if (megasas_mgmt_info.instance[i] == instance) {
6945                         megasas_mgmt_info.count--;
6946                         megasas_mgmt_info.instance[i] = NULL;
6947
6948                         break;
6949                 }
6950         }
6951
6952         instance->instancet->disable_intr(instance);
6953
6954         megasas_destroy_irqs(instance);
6955
6956         if (instance->msix_vectors)
6957                 pci_free_irq_vectors(instance->pdev);
6958
6959         if (instance->adapter_type == VENTURA_SERIES) {
6960                 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i)
6961                         kfree(fusion->stream_detect_by_ld[i]);
6962                 kfree(fusion->stream_detect_by_ld);
6963                 fusion->stream_detect_by_ld = NULL;
6964         }
6965
6966
6967         if (instance->adapter_type != MFI_SERIES) {
6968                 megasas_release_fusion(instance);
6969                         pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
6970                                 (sizeof(struct MR_PD_CFG_SEQ) *
6971                                         (MAX_PHYSICAL_DEVICES - 1));
6972                 for (i = 0; i < 2 ; i++) {
6973                         if (fusion->ld_map[i])
6974                                 dma_free_coherent(&instance->pdev->dev,
6975                                                   fusion->max_map_sz,
6976                                                   fusion->ld_map[i],
6977                                                   fusion->ld_map_phys[i]);
6978                         if (fusion->ld_drv_map[i]) {
6979                                 if (is_vmalloc_addr(fusion->ld_drv_map[i]))
6980                                         vfree(fusion->ld_drv_map[i]);
6981                                 else
6982                                         free_pages((ulong)fusion->ld_drv_map[i],
6983                                                    fusion->drv_map_pages);
6984                         }
6985
6986                         if (fusion->pd_seq_sync[i])
6987                                 dma_free_coherent(&instance->pdev->dev,
6988                                         pd_seq_map_sz,
6989                                         fusion->pd_seq_sync[i],
6990                                         fusion->pd_seq_phys[i]);
6991                 }
6992         } else {
6993                 megasas_release_mfi(instance);
6994         }
6995
6996         if (instance->vf_affiliation)
6997                 pci_free_consistent(pdev, (MAX_LOGICAL_DRIVES + 1) *
6998                                     sizeof(struct MR_LD_VF_AFFILIATION),
6999                                     instance->vf_affiliation,
7000                                     instance->vf_affiliation_h);
7001
7002         if (instance->vf_affiliation_111)
7003                 pci_free_consistent(pdev,
7004                                     sizeof(struct MR_LD_VF_AFFILIATION_111),
7005                                     instance->vf_affiliation_111,
7006                                     instance->vf_affiliation_111_h);
7007
7008         if (instance->hb_host_mem)
7009                 pci_free_consistent(pdev, sizeof(struct MR_CTRL_HB_HOST_MEM),
7010                                     instance->hb_host_mem,
7011                                     instance->hb_host_mem_h);
7012
7013         megasas_free_ctrl_dma_buffers(instance);
7014
7015         megasas_free_ctrl_mem(instance);
7016
7017         scsi_host_put(host);
7018
7019         pci_disable_device(pdev);
7020 }
7021
7022 /**
7023  * megasas_shutdown -   Shutdown entry point
7024  * @device:             Generic device structure
7025  */
7026 static void megasas_shutdown(struct pci_dev *pdev)
7027 {
7028         struct megasas_instance *instance = pci_get_drvdata(pdev);
7029
7030         instance->unload = 1;
7031
7032         if (megasas_wait_for_adapter_operational(instance))
7033                 goto skip_firing_dcmds;
7034
7035         megasas_flush_cache(instance);
7036         megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
7037
7038 skip_firing_dcmds:
7039         instance->instancet->disable_intr(instance);
7040         megasas_destroy_irqs(instance);
7041
7042         if (instance->msix_vectors)
7043                 pci_free_irq_vectors(instance->pdev);
7044 }
7045
7046 /**
7047  * megasas_mgmt_open -  char node "open" entry point
7048  */
7049 static int megasas_mgmt_open(struct inode *inode, struct file *filep)
7050 {
7051         /*
7052          * Allow only those users with admin rights
7053          */
7054         if (!capable(CAP_SYS_ADMIN))
7055                 return -EACCES;
7056
7057         return 0;
7058 }
7059
7060 /**
7061  * megasas_mgmt_fasync -        Async notifier registration from applications
7062  *
7063  * This function adds the calling process to a driver global queue. When an
7064  * event occurs, SIGIO will be sent to all processes in this queue.
7065  */
7066 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
7067 {
7068         int rc;
7069
7070         mutex_lock(&megasas_async_queue_mutex);
7071
7072         rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
7073
7074         mutex_unlock(&megasas_async_queue_mutex);
7075
7076         if (rc >= 0) {
7077                 /* For sanity check when we get ioctl */
7078                 filep->private_data = filep;
7079                 return 0;
7080         }
7081
7082         printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
7083
7084         return rc;
7085 }
7086
7087 /**
7088  * megasas_mgmt_poll -  char node "poll" entry point
7089  * */
7090 static __poll_t megasas_mgmt_poll(struct file *file, poll_table *wait)
7091 {
7092         __poll_t mask;
7093         unsigned long flags;
7094
7095         poll_wait(file, &megasas_poll_wait, wait);
7096         spin_lock_irqsave(&poll_aen_lock, flags);
7097         if (megasas_poll_wait_aen)
7098                 mask = (EPOLLIN | EPOLLRDNORM);
7099         else
7100                 mask = 0;
7101         megasas_poll_wait_aen = 0;
7102         spin_unlock_irqrestore(&poll_aen_lock, flags);
7103         return mask;
7104 }
7105
7106 /*
7107  * megasas_set_crash_dump_params_ioctl:
7108  *              Send CRASH_DUMP_MODE DCMD to all controllers
7109  * @cmd:        MFI command frame
7110  */
7111
7112 static int megasas_set_crash_dump_params_ioctl(struct megasas_cmd *cmd)
7113 {
7114         struct megasas_instance *local_instance;
7115         int i, error = 0;
7116         int crash_support;
7117
7118         crash_support = cmd->frame->dcmd.mbox.w[0];
7119
7120         for (i = 0; i < megasas_mgmt_info.max_index; i++) {
7121                 local_instance = megasas_mgmt_info.instance[i];
7122                 if (local_instance && local_instance->crash_dump_drv_support) {
7123                         if ((atomic_read(&local_instance->adprecovery) ==
7124                                 MEGASAS_HBA_OPERATIONAL) &&
7125                                 !megasas_set_crash_dump_params(local_instance,
7126                                         crash_support)) {
7127                                 local_instance->crash_dump_app_support =
7128                                         crash_support;
7129                                 dev_info(&local_instance->pdev->dev,
7130                                         "Application firmware crash "
7131                                         "dump mode set success\n");
7132                                 error = 0;
7133                         } else {
7134                                 dev_info(&local_instance->pdev->dev,
7135                                         "Application firmware crash "
7136                                         "dump mode set failed\n");
7137                                 error = -1;
7138                         }
7139                 }
7140         }
7141         return error;
7142 }
7143
7144 /**
7145  * megasas_mgmt_fw_ioctl -      Issues management ioctls to FW
7146  * @instance:                   Adapter soft state
7147  * @argp:                       User's ioctl packet
7148  */
7149 static int
7150 megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
7151                       struct megasas_iocpacket __user * user_ioc,
7152                       struct megasas_iocpacket *ioc)
7153 {
7154         struct megasas_sge64 *kern_sge64 = NULL;
7155         struct megasas_sge32 *kern_sge32 = NULL;
7156         struct megasas_cmd *cmd;
7157         void *kbuff_arr[MAX_IOCTL_SGE];
7158         dma_addr_t buf_handle = 0;
7159         int error = 0, i;
7160         void *sense = NULL;
7161         dma_addr_t sense_handle;
7162         unsigned long *sense_ptr;
7163         u32 opcode = 0;
7164
7165         memset(kbuff_arr, 0, sizeof(kbuff_arr));
7166
7167         if (ioc->sge_count > MAX_IOCTL_SGE) {
7168                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SGE count [%d] >  max limit [%d]\n",
7169                        ioc->sge_count, MAX_IOCTL_SGE);
7170                 return -EINVAL;
7171         }
7172
7173         if ((ioc->frame.hdr.cmd >= MFI_CMD_OP_COUNT) ||
7174             ((ioc->frame.hdr.cmd == MFI_CMD_NVME) &&
7175             !instance->support_nvme_passthru)) {
7176                 dev_err(&instance->pdev->dev,
7177                         "Received invalid ioctl command 0x%x\n",
7178                         ioc->frame.hdr.cmd);
7179                 return -ENOTSUPP;
7180         }
7181
7182         cmd = megasas_get_cmd(instance);
7183         if (!cmd) {
7184                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a cmd packet\n");
7185                 return -ENOMEM;
7186         }
7187
7188         /*
7189          * User's IOCTL packet has 2 frames (maximum). Copy those two
7190          * frames into our cmd's frames. cmd->frame's context will get
7191          * overwritten when we copy from user's frames. So set that value
7192          * alone separately
7193          */
7194         memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
7195         cmd->frame->hdr.context = cpu_to_le32(cmd->index);
7196         cmd->frame->hdr.pad_0 = 0;
7197
7198         cmd->frame->hdr.flags &= (~MFI_FRAME_IEEE);
7199
7200         if (instance->consistent_mask_64bit)
7201                 cmd->frame->hdr.flags |= cpu_to_le16((MFI_FRAME_SGL64 |
7202                                        MFI_FRAME_SENSE64));
7203         else
7204                 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_SGL64 |
7205                                                MFI_FRAME_SENSE64));
7206
7207         if (cmd->frame->hdr.cmd == MFI_CMD_DCMD)
7208                 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
7209
7210         if (opcode == MR_DCMD_CTRL_SHUTDOWN) {
7211                 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS) {
7212                         megasas_return_cmd(instance, cmd);
7213                         return -1;
7214                 }
7215         }
7216
7217         if (opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) {
7218                 error = megasas_set_crash_dump_params_ioctl(cmd);
7219                 megasas_return_cmd(instance, cmd);
7220                 return error;
7221         }
7222
7223         /*
7224          * The management interface between applications and the fw uses
7225          * MFI frames. E.g, RAID configuration changes, LD property changes
7226          * etc are accomplishes through different kinds of MFI frames. The
7227          * driver needs to care only about substituting user buffers with
7228          * kernel buffers in SGLs. The location of SGL is embedded in the
7229          * struct iocpacket itself.
7230          */
7231         if (instance->consistent_mask_64bit)
7232                 kern_sge64 = (struct megasas_sge64 *)
7233                         ((unsigned long)cmd->frame + ioc->sgl_off);
7234         else
7235                 kern_sge32 = (struct megasas_sge32 *)
7236                         ((unsigned long)cmd->frame + ioc->sgl_off);
7237
7238         /*
7239          * For each user buffer, create a mirror buffer and copy in
7240          */
7241         for (i = 0; i < ioc->sge_count; i++) {
7242                 if (!ioc->sgl[i].iov_len)
7243                         continue;
7244
7245                 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
7246                                                     ioc->sgl[i].iov_len,
7247                                                     &buf_handle, GFP_KERNEL);
7248                 if (!kbuff_arr[i]) {
7249                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc "
7250                                "kernel SGL buffer for IOCTL\n");
7251                         error = -ENOMEM;
7252                         goto out;
7253                 }
7254
7255                 /*
7256                  * We don't change the dma_coherent_mask, so
7257                  * pci_alloc_consistent only returns 32bit addresses
7258                  */
7259                 if (instance->consistent_mask_64bit) {
7260                         kern_sge64[i].phys_addr = cpu_to_le64(buf_handle);
7261                         kern_sge64[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
7262                 } else {
7263                         kern_sge32[i].phys_addr = cpu_to_le32(buf_handle);
7264                         kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
7265                 }
7266
7267                 /*
7268                  * We created a kernel buffer corresponding to the
7269                  * user buffer. Now copy in from the user buffer
7270                  */
7271                 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
7272                                    (u32) (ioc->sgl[i].iov_len))) {
7273                         error = -EFAULT;
7274                         goto out;
7275                 }
7276         }
7277
7278         if (ioc->sense_len) {
7279                 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
7280                                              &sense_handle, GFP_KERNEL);
7281                 if (!sense) {
7282                         error = -ENOMEM;
7283                         goto out;
7284                 }
7285
7286                 sense_ptr =
7287                 (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off);
7288                 if (instance->consistent_mask_64bit)
7289                         *sense_ptr = cpu_to_le64(sense_handle);
7290                 else
7291                         *sense_ptr = cpu_to_le32(sense_handle);
7292         }
7293
7294         /*
7295          * Set the sync_cmd flag so that the ISR knows not to complete this
7296          * cmd to the SCSI mid-layer
7297          */
7298         cmd->sync_cmd = 1;
7299         if (megasas_issue_blocked_cmd(instance, cmd, 0) == DCMD_NOT_FIRED) {
7300                 cmd->sync_cmd = 0;
7301                 dev_err(&instance->pdev->dev,
7302                         "return -EBUSY from %s %d cmd 0x%x opcode 0x%x cmd->cmd_status_drv 0x%x\n",
7303                         __func__, __LINE__, cmd->frame->hdr.cmd, opcode,
7304                         cmd->cmd_status_drv);
7305                 return -EBUSY;
7306         }
7307
7308         cmd->sync_cmd = 0;
7309
7310         if (instance->unload == 1) {
7311                 dev_info(&instance->pdev->dev, "Driver unload is in progress "
7312                         "don't submit data to application\n");
7313                 goto out;
7314         }
7315         /*
7316          * copy out the kernel buffers to user buffers
7317          */
7318         for (i = 0; i < ioc->sge_count; i++) {
7319                 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
7320                                  ioc->sgl[i].iov_len)) {
7321                         error = -EFAULT;
7322                         goto out;
7323                 }
7324         }
7325
7326         /*
7327          * copy out the sense
7328          */
7329         if (ioc->sense_len) {
7330                 /*
7331                  * sense_ptr points to the location that has the user
7332                  * sense buffer address
7333                  */
7334                 sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw +
7335                                 ioc->sense_off);
7336
7337                 if (copy_to_user((void __user *)((unsigned long)
7338                                  get_unaligned((unsigned long *)sense_ptr)),
7339                                  sense, ioc->sense_len)) {
7340                         dev_err(&instance->pdev->dev, "Failed to copy out to user "
7341                                         "sense data\n");
7342                         error = -EFAULT;
7343                         goto out;
7344                 }
7345         }
7346
7347         /*
7348          * copy the status codes returned by the fw
7349          */
7350         if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
7351                          &cmd->frame->hdr.cmd_status, sizeof(u8))) {
7352                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error copying out cmd_status\n");
7353                 error = -EFAULT;
7354         }
7355
7356 out:
7357         if (sense) {
7358                 dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
7359                                     sense, sense_handle);
7360         }
7361
7362         for (i = 0; i < ioc->sge_count; i++) {
7363                 if (kbuff_arr[i]) {
7364                         if (instance->consistent_mask_64bit)
7365                                 dma_free_coherent(&instance->pdev->dev,
7366                                         le32_to_cpu(kern_sge64[i].length),
7367                                         kbuff_arr[i],
7368                                         le64_to_cpu(kern_sge64[i].phys_addr));
7369                         else
7370                                 dma_free_coherent(&instance->pdev->dev,
7371                                         le32_to_cpu(kern_sge32[i].length),
7372                                         kbuff_arr[i],
7373                                         le32_to_cpu(kern_sge32[i].phys_addr));
7374                         kbuff_arr[i] = NULL;
7375                 }
7376         }
7377
7378         megasas_return_cmd(instance, cmd);
7379         return error;
7380 }
7381
7382 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
7383 {
7384         struct megasas_iocpacket __user *user_ioc =
7385             (struct megasas_iocpacket __user *)arg;
7386         struct megasas_iocpacket *ioc;
7387         struct megasas_instance *instance;
7388         int error;
7389
7390         ioc = memdup_user(user_ioc, sizeof(*ioc));
7391         if (IS_ERR(ioc))
7392                 return PTR_ERR(ioc);
7393
7394         instance = megasas_lookup_instance(ioc->host_no);
7395         if (!instance) {
7396                 error = -ENODEV;
7397                 goto out_kfree_ioc;
7398         }
7399
7400         /* Block ioctls in VF mode */
7401         if (instance->requestorId && !allow_vf_ioctls) {
7402                 error = -ENODEV;
7403                 goto out_kfree_ioc;
7404         }
7405
7406         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
7407                 dev_err(&instance->pdev->dev, "Controller in crit error\n");
7408                 error = -ENODEV;
7409                 goto out_kfree_ioc;
7410         }
7411
7412         if (instance->unload == 1) {
7413                 error = -ENODEV;
7414                 goto out_kfree_ioc;
7415         }
7416
7417         if (down_interruptible(&instance->ioctl_sem)) {
7418                 error = -ERESTARTSYS;
7419                 goto out_kfree_ioc;
7420         }
7421
7422         if  (megasas_wait_for_adapter_operational(instance)) {
7423                 error = -ENODEV;
7424                 goto out_up;
7425         }
7426
7427         error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
7428 out_up:
7429         up(&instance->ioctl_sem);
7430
7431 out_kfree_ioc:
7432         kfree(ioc);
7433         return error;
7434 }
7435
7436 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
7437 {
7438         struct megasas_instance *instance;
7439         struct megasas_aen aen;
7440         int error;
7441
7442         if (file->private_data != file) {
7443                 printk(KERN_DEBUG "megasas: fasync_helper was not "
7444                        "called first\n");
7445                 return -EINVAL;
7446         }
7447
7448         if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
7449                 return -EFAULT;
7450
7451         instance = megasas_lookup_instance(aen.host_no);
7452
7453         if (!instance)
7454                 return -ENODEV;
7455
7456         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
7457                 return -ENODEV;
7458         }
7459
7460         if (instance->unload == 1) {
7461                 return -ENODEV;
7462         }
7463
7464         if  (megasas_wait_for_adapter_operational(instance))
7465                 return -ENODEV;
7466
7467         mutex_lock(&instance->reset_mutex);
7468         error = megasas_register_aen(instance, aen.seq_num,
7469                                      aen.class_locale_word);
7470         mutex_unlock(&instance->reset_mutex);
7471         return error;
7472 }
7473
7474 /**
7475  * megasas_mgmt_ioctl - char node ioctl entry point
7476  */
7477 static long
7478 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
7479 {
7480         switch (cmd) {
7481         case MEGASAS_IOC_FIRMWARE:
7482                 return megasas_mgmt_ioctl_fw(file, arg);
7483
7484         case MEGASAS_IOC_GET_AEN:
7485                 return megasas_mgmt_ioctl_aen(file, arg);
7486         }
7487
7488         return -ENOTTY;
7489 }
7490
7491 #ifdef CONFIG_COMPAT
7492 static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg)
7493 {
7494         struct compat_megasas_iocpacket __user *cioc =
7495             (struct compat_megasas_iocpacket __user *)arg;
7496         struct megasas_iocpacket __user *ioc =
7497             compat_alloc_user_space(sizeof(struct megasas_iocpacket));
7498         int i;
7499         int error = 0;
7500         compat_uptr_t ptr;
7501         u32 local_sense_off;
7502         u32 local_sense_len;
7503         u32 user_sense_off;
7504
7505         if (clear_user(ioc, sizeof(*ioc)))
7506                 return -EFAULT;
7507
7508         if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) ||
7509             copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) ||
7510             copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) ||
7511             copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) ||
7512             copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) ||
7513             copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32)))
7514                 return -EFAULT;
7515
7516         /*
7517          * The sense_ptr is used in megasas_mgmt_fw_ioctl only when
7518          * sense_len is not null, so prepare the 64bit value under
7519          * the same condition.
7520          */
7521         if (get_user(local_sense_off, &ioc->sense_off) ||
7522                 get_user(local_sense_len, &ioc->sense_len) ||
7523                 get_user(user_sense_off, &cioc->sense_off))
7524                 return -EFAULT;
7525
7526         if (local_sense_len) {
7527                 void __user **sense_ioc_ptr =
7528                         (void __user **)((u8 *)((unsigned long)&ioc->frame.raw) + local_sense_off);
7529                 compat_uptr_t *sense_cioc_ptr =
7530                         (compat_uptr_t *)(((unsigned long)&cioc->frame.raw) + user_sense_off);
7531                 if (get_user(ptr, sense_cioc_ptr) ||
7532                     put_user(compat_ptr(ptr), sense_ioc_ptr))
7533                         return -EFAULT;
7534         }
7535
7536         for (i = 0; i < MAX_IOCTL_SGE; i++) {
7537                 if (get_user(ptr, &cioc->sgl[i].iov_base) ||
7538                     put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) ||
7539                     copy_in_user(&ioc->sgl[i].iov_len,
7540                                  &cioc->sgl[i].iov_len, sizeof(compat_size_t)))
7541                         return -EFAULT;
7542         }
7543
7544         error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc);
7545
7546         if (copy_in_user(&cioc->frame.hdr.cmd_status,
7547                          &ioc->frame.hdr.cmd_status, sizeof(u8))) {
7548                 printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n");
7549                 return -EFAULT;
7550         }
7551         return error;
7552 }
7553
7554 static long
7555 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
7556                           unsigned long arg)
7557 {
7558         switch (cmd) {
7559         case MEGASAS_IOC_FIRMWARE32:
7560                 return megasas_mgmt_compat_ioctl_fw(file, arg);
7561         case MEGASAS_IOC_GET_AEN:
7562                 return megasas_mgmt_ioctl_aen(file, arg);
7563         }
7564
7565         return -ENOTTY;
7566 }
7567 #endif
7568
7569 /*
7570  * File operations structure for management interface
7571  */
7572 static const struct file_operations megasas_mgmt_fops = {
7573         .owner = THIS_MODULE,
7574         .open = megasas_mgmt_open,
7575         .fasync = megasas_mgmt_fasync,
7576         .unlocked_ioctl = megasas_mgmt_ioctl,
7577         .poll = megasas_mgmt_poll,
7578 #ifdef CONFIG_COMPAT
7579         .compat_ioctl = megasas_mgmt_compat_ioctl,
7580 #endif
7581         .llseek = noop_llseek,
7582 };
7583
7584 /*
7585  * PCI hotplug support registration structure
7586  */
7587 static struct pci_driver megasas_pci_driver = {
7588
7589         .name = "megaraid_sas",
7590         .id_table = megasas_pci_table,
7591         .probe = megasas_probe_one,
7592         .remove = megasas_detach_one,
7593         .suspend = megasas_suspend,
7594         .resume = megasas_resume,
7595         .shutdown = megasas_shutdown,
7596 };
7597
7598 /*
7599  * Sysfs driver attributes
7600  */
7601 static ssize_t version_show(struct device_driver *dd, char *buf)
7602 {
7603         return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
7604                         MEGASAS_VERSION);
7605 }
7606 static DRIVER_ATTR_RO(version);
7607
7608 static ssize_t release_date_show(struct device_driver *dd, char *buf)
7609 {
7610         return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n",
7611                 MEGASAS_RELDATE);
7612 }
7613 static DRIVER_ATTR_RO(release_date);
7614
7615 static ssize_t support_poll_for_event_show(struct device_driver *dd, char *buf)
7616 {
7617         return sprintf(buf, "%u\n", support_poll_for_event);
7618 }
7619 static DRIVER_ATTR_RO(support_poll_for_event);
7620
7621 static ssize_t support_device_change_show(struct device_driver *dd, char *buf)
7622 {
7623         return sprintf(buf, "%u\n", support_device_change);
7624 }
7625 static DRIVER_ATTR_RO(support_device_change);
7626
7627 static ssize_t dbg_lvl_show(struct device_driver *dd, char *buf)
7628 {
7629         return sprintf(buf, "%u\n", megasas_dbg_lvl);
7630 }
7631
7632 static ssize_t dbg_lvl_store(struct device_driver *dd, const char *buf,
7633                              size_t count)
7634 {
7635         int retval = count;
7636
7637         if (sscanf(buf, "%u", &megasas_dbg_lvl) < 1) {
7638                 printk(KERN_ERR "megasas: could not set dbg_lvl\n");
7639                 retval = -EINVAL;
7640         }
7641         return retval;
7642 }
7643 static DRIVER_ATTR_RW(dbg_lvl);
7644
7645 static ssize_t
7646 support_nvme_encapsulation_show(struct device_driver *dd, char *buf)
7647 {
7648         return sprintf(buf, "%u\n", support_nvme_encapsulation);
7649 }
7650
7651 static DRIVER_ATTR_RO(support_nvme_encapsulation);
7652
7653 static inline void megasas_remove_scsi_device(struct scsi_device *sdev)
7654 {
7655         sdev_printk(KERN_INFO, sdev, "SCSI device is removed\n");
7656         scsi_remove_device(sdev);
7657         scsi_device_put(sdev);
7658 }
7659
7660 static void
7661 megasas_aen_polling(struct work_struct *work)
7662 {
7663         struct megasas_aen_event *ev =
7664                 container_of(work, struct megasas_aen_event, hotplug_work.work);
7665         struct megasas_instance *instance = ev->instance;
7666         union megasas_evt_class_locale class_locale;
7667         struct  Scsi_Host *host;
7668         struct  scsi_device *sdev1;
7669         u16     pd_index = 0;
7670         u16     ld_index = 0;
7671         int     i, j, doscan = 0;
7672         u32 seq_num, wait_time = MEGASAS_RESET_WAIT_TIME;
7673         int error;
7674         u8  dcmd_ret = DCMD_SUCCESS;
7675
7676         if (!instance) {
7677                 printk(KERN_ERR "invalid instance!\n");
7678                 kfree(ev);
7679                 return;
7680         }
7681
7682         /* Adjust event workqueue thread wait time for VF mode */
7683         if (instance->requestorId)
7684                 wait_time = MEGASAS_ROUTINE_WAIT_TIME_VF;
7685
7686         /* Don't run the event workqueue thread if OCR is running */
7687         mutex_lock(&instance->reset_mutex);
7688
7689         instance->ev = NULL;
7690         host = instance->host;
7691         if (instance->evt_detail) {
7692                 megasas_decode_evt(instance);
7693
7694                 switch (le32_to_cpu(instance->evt_detail->code)) {
7695
7696                 case MR_EVT_PD_INSERTED:
7697                 case MR_EVT_PD_REMOVED:
7698                         dcmd_ret = megasas_get_pd_list(instance);
7699                         if (dcmd_ret == DCMD_SUCCESS)
7700                                 doscan = SCAN_PD_CHANNEL;
7701                         break;
7702
7703                 case MR_EVT_LD_OFFLINE:
7704                 case MR_EVT_CFG_CLEARED:
7705                 case MR_EVT_LD_DELETED:
7706                 case MR_EVT_LD_CREATED:
7707                         if (!instance->requestorId ||
7708                                 (instance->requestorId && megasas_get_ld_vf_affiliation(instance, 0)))
7709                                 dcmd_ret = megasas_ld_list_query(instance, MR_LD_QUERY_TYPE_EXPOSED_TO_HOST);
7710
7711                         if (dcmd_ret == DCMD_SUCCESS)
7712                                 doscan = SCAN_VD_CHANNEL;
7713
7714                         break;
7715
7716                 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
7717                 case MR_EVT_FOREIGN_CFG_IMPORTED:
7718                 case MR_EVT_LD_STATE_CHANGE:
7719                         dcmd_ret = megasas_get_pd_list(instance);
7720
7721                         if (dcmd_ret != DCMD_SUCCESS)
7722                                 break;
7723
7724                         if (!instance->requestorId ||
7725                                 (instance->requestorId && megasas_get_ld_vf_affiliation(instance, 0)))
7726                                 dcmd_ret = megasas_ld_list_query(instance, MR_LD_QUERY_TYPE_EXPOSED_TO_HOST);
7727
7728                         if (dcmd_ret != DCMD_SUCCESS)
7729                                 break;
7730
7731                         doscan = SCAN_VD_CHANNEL | SCAN_PD_CHANNEL;
7732                         dev_info(&instance->pdev->dev, "scanning for scsi%d...\n",
7733                                 instance->host->host_no);
7734                         break;
7735
7736                 case MR_EVT_CTRL_PROP_CHANGED:
7737                                 dcmd_ret = megasas_get_ctrl_info(instance);
7738                                 break;
7739                 default:
7740                         doscan = 0;
7741                         break;
7742                 }
7743         } else {
7744                 dev_err(&instance->pdev->dev, "invalid evt_detail!\n");
7745                 mutex_unlock(&instance->reset_mutex);
7746                 kfree(ev);
7747                 return;
7748         }
7749
7750         mutex_unlock(&instance->reset_mutex);
7751
7752         if (doscan & SCAN_PD_CHANNEL) {
7753                 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
7754                         for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
7755                                 pd_index = i*MEGASAS_MAX_DEV_PER_CHANNEL + j;
7756                                 sdev1 = scsi_device_lookup(host, i, j, 0);
7757                                 if (instance->pd_list[pd_index].driveState ==
7758                                                         MR_PD_STATE_SYSTEM) {
7759                                         if (!sdev1)
7760                                                 scsi_add_device(host, i, j, 0);
7761                                         else
7762                                                 scsi_device_put(sdev1);
7763                                 } else {
7764                                         if (sdev1)
7765                                                 megasas_remove_scsi_device(sdev1);
7766                                 }
7767                         }
7768                 }
7769         }
7770
7771         if (doscan & SCAN_VD_CHANNEL) {
7772                 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
7773                         for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
7774                                 ld_index = (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
7775                                 sdev1 = scsi_device_lookup(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
7776                                 if (instance->ld_ids[ld_index] != 0xff) {
7777                                         if (!sdev1)
7778                                                 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
7779                                         else
7780                                                 scsi_device_put(sdev1);
7781                                 } else {
7782                                         if (sdev1)
7783                                                 megasas_remove_scsi_device(sdev1);
7784                                 }
7785                         }
7786                 }
7787         }
7788
7789         if (dcmd_ret == DCMD_SUCCESS)
7790                 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1;
7791         else
7792                 seq_num = instance->last_seq_num;
7793
7794         /* Register AEN with FW for latest sequence number plus 1 */
7795         class_locale.members.reserved = 0;
7796         class_locale.members.locale = MR_EVT_LOCALE_ALL;
7797         class_locale.members.class = MR_EVT_CLASS_DEBUG;
7798
7799         if (instance->aen_cmd != NULL) {
7800                 kfree(ev);
7801                 return;
7802         }
7803
7804         mutex_lock(&instance->reset_mutex);
7805         error = megasas_register_aen(instance, seq_num,
7806                                         class_locale.word);
7807         if (error)
7808                 dev_err(&instance->pdev->dev,
7809                         "register aen failed error %x\n", error);
7810
7811         mutex_unlock(&instance->reset_mutex);
7812         kfree(ev);
7813 }
7814
7815 /**
7816  * megasas_init - Driver load entry point
7817  */
7818 static int __init megasas_init(void)
7819 {
7820         int rval;
7821
7822         /*
7823          * Booted in kdump kernel, minimize memory footprints by
7824          * disabling few features
7825          */
7826         if (reset_devices) {
7827                 msix_vectors = 1;
7828                 rdpq_enable = 0;
7829                 dual_qdepth_disable = 1;
7830         }
7831
7832         /*
7833          * Announce driver version and other information
7834          */
7835         pr_info("megasas: %s\n", MEGASAS_VERSION);
7836
7837         spin_lock_init(&poll_aen_lock);
7838
7839         support_poll_for_event = 2;
7840         support_device_change = 1;
7841         support_nvme_encapsulation = true;
7842
7843         memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
7844
7845         /*
7846          * Register character device node
7847          */
7848         rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
7849
7850         if (rval < 0) {
7851                 printk(KERN_DEBUG "megasas: failed to open device node\n");
7852                 return rval;
7853         }
7854
7855         megasas_mgmt_majorno = rval;
7856
7857         /*
7858          * Register ourselves as PCI hotplug module
7859          */
7860         rval = pci_register_driver(&megasas_pci_driver);
7861
7862         if (rval) {
7863                 printk(KERN_DEBUG "megasas: PCI hotplug registration failed \n");
7864                 goto err_pcidrv;
7865         }
7866
7867         rval = driver_create_file(&megasas_pci_driver.driver,
7868                                   &driver_attr_version);
7869         if (rval)
7870                 goto err_dcf_attr_ver;
7871
7872         rval = driver_create_file(&megasas_pci_driver.driver,
7873                                   &driver_attr_release_date);
7874         if (rval)
7875                 goto err_dcf_rel_date;
7876
7877         rval = driver_create_file(&megasas_pci_driver.driver,
7878                                 &driver_attr_support_poll_for_event);
7879         if (rval)
7880                 goto err_dcf_support_poll_for_event;
7881
7882         rval = driver_create_file(&megasas_pci_driver.driver,
7883                                   &driver_attr_dbg_lvl);
7884         if (rval)
7885                 goto err_dcf_dbg_lvl;
7886         rval = driver_create_file(&megasas_pci_driver.driver,
7887                                 &driver_attr_support_device_change);
7888         if (rval)
7889                 goto err_dcf_support_device_change;
7890
7891         rval = driver_create_file(&megasas_pci_driver.driver,
7892                                   &driver_attr_support_nvme_encapsulation);
7893         if (rval)
7894                 goto err_dcf_support_nvme_encapsulation;
7895
7896         return rval;
7897
7898 err_dcf_support_nvme_encapsulation:
7899         driver_remove_file(&megasas_pci_driver.driver,
7900                            &driver_attr_support_device_change);
7901
7902 err_dcf_support_device_change:
7903         driver_remove_file(&megasas_pci_driver.driver,
7904                            &driver_attr_dbg_lvl);
7905 err_dcf_dbg_lvl:
7906         driver_remove_file(&megasas_pci_driver.driver,
7907                         &driver_attr_support_poll_for_event);
7908 err_dcf_support_poll_for_event:
7909         driver_remove_file(&megasas_pci_driver.driver,
7910                            &driver_attr_release_date);
7911 err_dcf_rel_date:
7912         driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
7913 err_dcf_attr_ver:
7914         pci_unregister_driver(&megasas_pci_driver);
7915 err_pcidrv:
7916         unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
7917         return rval;
7918 }
7919
7920 /**
7921  * megasas_exit - Driver unload entry point
7922  */
7923 static void __exit megasas_exit(void)
7924 {
7925         driver_remove_file(&megasas_pci_driver.driver,
7926                            &driver_attr_dbg_lvl);
7927         driver_remove_file(&megasas_pci_driver.driver,
7928                         &driver_attr_support_poll_for_event);
7929         driver_remove_file(&megasas_pci_driver.driver,
7930                         &driver_attr_support_device_change);
7931         driver_remove_file(&megasas_pci_driver.driver,
7932                            &driver_attr_release_date);
7933         driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
7934         driver_remove_file(&megasas_pci_driver.driver,
7935                            &driver_attr_support_nvme_encapsulation);
7936
7937         pci_unregister_driver(&megasas_pci_driver);
7938         unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
7939 }
7940
7941 module_init(megasas_init);
7942 module_exit(megasas_exit);