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) 2013-2016  Avago Technologies
   6  *  Copyright (c) 2016-2018  Broadcom Inc.
   7  *
   8  *  This program is free software; you can redistribute it and/or
   9  *  modify it under the terms of the GNU General Public License
  10  *  as published by the Free Software Foundation; either version 2
  11  *  of the License, or (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20  *
  21  *  Authors: Broadcom Inc.
  22  *           Sreenivas Bagalkote
  23  *           Sumant Patro
  24  *           Bo Yang
  25  *           Adam Radford
  26  *           Kashyap Desai <kashyap.desai@broadcom.com>
  27  *           Sumit Saxena <sumit.saxena@broadcom.com>
  28  *
  29  *  Send feedback to: megaraidlinux.pdl@broadcom.com
  30  */
  31
  32 #include <linux/kernel.h>
  33 #include <linux/types.h>
  34 #include <linux/pci.h>
  35 #include <linux/list.h>
  36 #include <linux/moduleparam.h>
  37 #include <linux/module.h>
  38 #include <linux/spinlock.h>
  39 #include <linux/interrupt.h>
  40 #include <linux/delay.h>
  41 #include <linux/uio.h>
  42 #include <linux/slab.h>
  43 #include <linux/uaccess.h>
  44 #include <asm/unaligned.h>
  45 #include <linux/fs.h>
  46 #include <linux/compat.h>
  47 #include <linux/blkdev.h>
  48 #include <linux/mutex.h>
  49 #include <linux/poll.h>
  50 #include <linux/vmalloc.h>
  51
  52 #include <scsi/scsi.h>
  53 #include <scsi/scsi_cmnd.h>
  54 #include <scsi/scsi_device.h>
  55 #include <scsi/scsi_host.h>
  56 #include <scsi/scsi_tcq.h>
  57 #include "megaraid_sas_fusion.h"
  58 #include "megaraid_sas.h"
  59
  60 /*
  61  * Number of sectors per IO command
  62  * Will be set in megasas_init_mfi if user does not provide
  63  */
  64 static unsigned int max_sectors;
  65 module_param_named(max_sectors, max_sectors, int, 0);
  66 MODULE_PARM_DESC(max_sectors,
  67         "Maximum number of sectors per IO command");
  68
  69 static int msix_disable;
  70 module_param(msix_disable, int, S_IRUGO);
  71 MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0");
  72
  73 static unsigned int msix_vectors;
  74 module_param(msix_vectors, int, S_IRUGO);
  75 MODULE_PARM_DESC(msix_vectors, "MSI-X max vector count. Default: Set by FW");
  76
  77 static int allow_vf_ioctls;
  78 module_param(allow_vf_ioctls, int, S_IRUGO);
  79 MODULE_PARM_DESC(allow_vf_ioctls, "Allow ioctls in SR-IOV VF mode. Default: 0");
  80
  81 static unsigned int throttlequeuedepth = MEGASAS_THROTTLE_QUEUE_DEPTH;
  82 module_param(throttlequeuedepth, int, S_IRUGO);
  83 MODULE_PARM_DESC(throttlequeuedepth,
  84         "Adapter queue depth when throttled due to I/O timeout. Default: 16");
  85
  86 unsigned int resetwaittime = MEGASAS_RESET_WAIT_TIME;
  87 module_param(resetwaittime, int, S_IRUGO);
  88 MODULE_PARM_DESC(resetwaittime, "Wait time in (1-180s) after I/O timeout before resetting adapter. Default: 180s");
  89
  90 int smp_affinity_enable = 1;
  91 module_param(smp_affinity_enable, int, S_IRUGO);
  92 MODULE_PARM_DESC(smp_affinity_enable, "SMP affinity feature enable/disable Default: enable(1)");
  93
  94 int rdpq_enable = 1;
  95 module_param(rdpq_enable, int, S_IRUGO);
  96 MODULE_PARM_DESC(rdpq_enable, "Allocate reply queue in chunks for large queue depth enable/disable Default: enable(1)");
  97
  98 unsigned int dual_qdepth_disable;
  99 module_param(dual_qdepth_disable, int, S_IRUGO);
 100 MODULE_PARM_DESC(dual_qdepth_disable, "Disable dual queue depth feature. Default: 0");
 101
 102 unsigned int scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
 103 module_param(scmd_timeout, int, S_IRUGO);
 104 MODULE_PARM_DESC(scmd_timeout, "scsi command timeout (10-90s), default 90s. See megasas_reset_timer.");
 105
 106 MODULE_LICENSE("GPL");
 107 MODULE_VERSION(MEGASAS_VERSION);
 108 MODULE_AUTHOR("megaraidlinux.pdl@broadcom.com");
 109 MODULE_DESCRIPTION("Broadcom MegaRAID SAS Driver");
 110
 111 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
 112 static int megasas_get_pd_list(struct megasas_instance *instance);
 113 static int megasas_ld_list_query(struct megasas_instance *instance,
 114                                  u8 query_type);
 115 static int megasas_issue_init_mfi(struct megasas_instance *instance);
 116 static int megasas_register_aen(struct megasas_instance *instance,
 117                                 u32 seq_num, u32 class_locale_word);
 118 static void megasas_get_pd_info(struct megasas_instance *instance,
 119                                 struct scsi_device *sdev);
 120
 121 /*
 122  * PCI ID table for all supported controllers
 123  */
 124 static struct pci_device_id megasas_pci_table[] = {
 125
 126         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)},
 127         /* xscale IOP */
 128         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)},
 129         /* ppc IOP */
 130         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)},
 131         /* ppc IOP */
 132         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)},
 133         /* gen2*/
 134         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)},
 135         /* gen2*/
 136         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)},
 137         /* skinny*/
 138         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)},
 139         /* skinny*/
 140         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)},
 141         /* xscale IOP, vega */
 142         {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
 143         /* xscale IOP */
 144         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)},
 145         /* Fusion */
 146         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_PLASMA)},
 147         /* Plasma */
 148         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)},
 149         /* Invader */
 150         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FURY)},
 151         /* Fury */
 152         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER)},
 153         /* Intruder */
 154         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER_24)},
 155         /* Intruder 24 port*/
 156         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_52)},
 157         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_53)},
 158         /* VENTURA */
 159         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA)},
 160         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER)},
 161         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_HARPOON)},
 162         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_TOMCAT)},
 163         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA_4PORT)},
 164         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER_4PORT)},
 165         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E1)},
 166         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E2)},
 167         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E5)},
 168         {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E6)},
 169         {}
 170 };
 171
 172 MODULE_DEVICE_TABLE(pci, megasas_pci_table);
 173
 174 static int megasas_mgmt_majorno;
 175 struct megasas_mgmt_info megasas_mgmt_info;
 176 static struct fasync_struct *megasas_async_queue;
 177 static DEFINE_MUTEX(megasas_async_queue_mutex);
 178
 179 static int megasas_poll_wait_aen;
 180 static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait);
 181 static u32 support_poll_for_event;
 182 u32 megasas_dbg_lvl;
 183 static u32 support_device_change;
 184 static bool support_nvme_encapsulation;
 185
 186 /* define lock for aen poll */
 187 spinlock_t poll_aen_lock;
 188
 189 void
 190 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
 191                      u8 alt_status);
 192 static u32
 193 megasas_read_fw_status_reg_gen2(struct megasas_instance *instance);
 194 static int
 195 megasas_adp_reset_gen2(struct megasas_instance *instance,
 196                        struct megasas_register_set __iomem *reg_set);
 197 static irqreturn_t megasas_isr(int irq, void *devp);
 198 static u32
 199 megasas_init_adapter_mfi(struct megasas_instance *instance);
 200 u32
 201 megasas_build_and_issue_cmd(struct megasas_instance *instance,
 202                             struct scsi_cmnd *scmd);
 203 static void megasas_complete_cmd_dpc(unsigned long instance_addr);
 204 int
 205 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
 206         int seconds);
 207 void megasas_fusion_ocr_wq(struct work_struct *work);
 208 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
 209                                          int initial);
 210 static int
 211 megasas_set_dma_mask(struct megasas_instance *instance);
 212 static int
 213 megasas_alloc_ctrl_mem(struct megasas_instance *instance);
 214 static inline void
 215 megasas_free_ctrl_mem(struct megasas_instance *instance);
 216 static inline int
 217 megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance);
 218 static inline void
 219 megasas_free_ctrl_dma_buffers(struct megasas_instance *instance);
 220 static inline void
 221 megasas_init_ctrl_params(struct megasas_instance *instance);
 222
 223 u32 megasas_readl(struct megasas_instance *instance,
 224                   const volatile void __iomem *addr)
 225 {
 226         u32 i = 0, ret_val;
 227         /*
 228          * Due to a HW errata in Aero controllers, reads to certain
 229          * Fusion registers could intermittently return all zeroes.
 230          * This behavior is transient in nature and subsequent reads will
 231          * return valid value. As a workaround in driver, retry readl for
 232          * upto three times until a non-zero value is read.
 233          */
 234         if (instance->adapter_type == AERO_SERIES) {
 235                 do {
 236                         ret_val = readl(addr);
 237                         i++;
 238                 } while (ret_val == 0 && i < 3);
 239                 return ret_val;
 240         } else {
 241                 return readl(addr);
 242         }
 243 }
 244
 245 /**
 246  * megasas_set_dma_settings -   Populate DMA address, length and flags for DCMDs
 247  * @instance:                   Adapter soft state
 248  * @dcmd:                       DCMD frame inside MFI command
 249  * @dma_addr:                   DMA address of buffer to be passed to FW
 250  * @dma_len:                    Length of DMA buffer to be passed to FW
 251  * @return:                     void
 252  */
 253 void megasas_set_dma_settings(struct megasas_instance *instance,
 254                               struct megasas_dcmd_frame *dcmd,
 255                               dma_addr_t dma_addr, u32 dma_len)
 256 {
 257         if (instance->consistent_mask_64bit) {
 258                 dcmd->sgl.sge64[0].phys_addr = cpu_to_le64(dma_addr);
 259                 dcmd->sgl.sge64[0].length = cpu_to_le32(dma_len);
 260                 dcmd->flags = cpu_to_le16(dcmd->flags | MFI_FRAME_SGL64);
 261
 262         } else {
 263                 dcmd->sgl.sge32[0].phys_addr =
 264                                 cpu_to_le32(lower_32_bits(dma_addr));
 265                 dcmd->sgl.sge32[0].length = cpu_to_le32(dma_len);
 266                 dcmd->flags = cpu_to_le16(dcmd->flags);
 267         }
 268 }
 269
 270 void
 271 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
 272 {
 273         instance->instancet->fire_cmd(instance,
 274                 cmd->frame_phys_addr, 0, instance->reg_set);
 275         return;
 276 }
 277
 278 /**
 279  * megasas_get_cmd -    Get a command from the free pool
 280  * @instance:           Adapter soft state
 281  *
 282  * Returns a free command from the pool
 283  */
 284 struct megasas_cmd *megasas_get_cmd(struct megasas_instance
 285                                                   *instance)
 286 {
 287         unsigned long flags;
 288         struct megasas_cmd *cmd = NULL;
 289
 290         spin_lock_irqsave(&instance->mfi_pool_lock, flags);
 291
 292         if (!list_empty(&instance->cmd_pool)) {
 293                 cmd = list_entry((&instance->cmd_pool)->next,
 294                                  struct megasas_cmd, list);
 295                 list_del_init(&cmd->list);
 296         } else {
 297                 dev_err(&instance->pdev->dev, "Command pool empty!\n");
 298         }
 299
 300         spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
 301         return cmd;
 302 }
 303
 304 /**
 305  * megasas_return_cmd - Return a cmd to free command pool
 306  * @instance:           Adapter soft state
 307  * @cmd:                Command packet to be returned to free command pool
 308  */
 309 void
 310 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
 311 {
 312         unsigned long flags;
 313         u32 blk_tags;
 314         struct megasas_cmd_fusion *cmd_fusion;
 315         struct fusion_context *fusion = instance->ctrl_context;
 316
 317         /* This flag is used only for fusion adapter.
 318          * Wait for Interrupt for Polled mode DCMD
 319          */
 320         if (cmd->flags & DRV_DCMD_POLLED_MODE)
 321                 return;
 322
 323         spin_lock_irqsave(&instance->mfi_pool_lock, flags);
 324
 325         if (fusion) {
 326                 blk_tags = instance->max_scsi_cmds + cmd->index;
 327                 cmd_fusion = fusion->cmd_list[blk_tags];
 328                 megasas_return_cmd_fusion(instance, cmd_fusion);
 329         }
 330         cmd->scmd = NULL;
 331         cmd->frame_count = 0;
 332         cmd->flags = 0;
 333         memset(cmd->frame, 0, instance->mfi_frame_size);
 334         cmd->frame->io.context = cpu_to_le32(cmd->index);
 335         if (!fusion && reset_devices)
 336                 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
 337         list_add(&cmd->list, (&instance->cmd_pool)->next);
 338
 339         spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
 340
 341 }
 342
 343 static const char *
 344 format_timestamp(uint32_t timestamp)
 345 {
 346         static char buffer[32];
 347
 348         if ((timestamp & 0xff000000) == 0xff000000)
 349                 snprintf(buffer, sizeof(buffer), "boot + %us", timestamp &
 350                 0x00ffffff);
 351         else
 352                 snprintf(buffer, sizeof(buffer), "%us", timestamp);
 353         return buffer;
 354 }
 355
 356 static const char *
 357 format_class(int8_t class)
 358 {
 359         static char buffer[6];
 360
 361         switch (class) {
 362         case MFI_EVT_CLASS_DEBUG:
 363                 return "debug";
 364         case MFI_EVT_CLASS_PROGRESS:
 365                 return "progress";
 366         case MFI_EVT_CLASS_INFO:
 367                 return "info";
 368         case MFI_EVT_CLASS_WARNING:
 369                 return "WARN";
 370         case MFI_EVT_CLASS_CRITICAL:
 371                 return "CRIT";
 372         case MFI_EVT_CLASS_FATAL:
 373                 return "FATAL";
 374         case MFI_EVT_CLASS_DEAD:
 375                 return "DEAD";
 376         default:
 377                 snprintf(buffer, sizeof(buffer), "%d", class);
 378                 return buffer;
 379         }
 380 }
 381
 382 /**
 383   * megasas_decode_evt: Decode FW AEN event and print critical event
 384   * for information.
 385   * @instance:                  Adapter soft state
 386   */
 387 static void
 388 megasas_decode_evt(struct megasas_instance *instance)
 389 {
 390         struct megasas_evt_detail *evt_detail = instance->evt_detail;
 391         union megasas_evt_class_locale class_locale;
 392         class_locale.word = le32_to_cpu(evt_detail->cl.word);
 393
 394         if (class_locale.members.class >= MFI_EVT_CLASS_CRITICAL)
 395                 dev_info(&instance->pdev->dev, "%d (%s/0x%04x/%s) - %s\n",
 396                         le32_to_cpu(evt_detail->seq_num),
 397                         format_timestamp(le32_to_cpu(evt_detail->time_stamp)),
 398                         (class_locale.members.locale),
 399                         format_class(class_locale.members.class),
 400                         evt_detail->description);
 401 }
 402
 403 /**
 404 *       The following functions are defined for xscale
 405 *       (deviceid : 1064R, PERC5) controllers
 406 */
 407
 408 /**
 409  * megasas_enable_intr_xscale - Enables interrupts
 410  * @regs:                       MFI register set
 411  */
 412 static inline void
 413 megasas_enable_intr_xscale(struct megasas_instance *instance)
 414 {
 415         struct megasas_register_set __iomem *regs;
 416
 417         regs = instance->reg_set;
 418         writel(0, &(regs)->outbound_intr_mask);
 419
 420         /* Dummy readl to force pci flush */
 421         readl(&regs->outbound_intr_mask);
 422 }
 423
 424 /**
 425  * megasas_disable_intr_xscale -Disables interrupt
 426  * @regs:                       MFI register set
 427  */
 428 static inline void
 429 megasas_disable_intr_xscale(struct megasas_instance *instance)
 430 {
 431         struct megasas_register_set __iomem *regs;
 432         u32 mask = 0x1f;
 433
 434         regs = instance->reg_set;
 435         writel(mask, &regs->outbound_intr_mask);
 436         /* Dummy readl to force pci flush */
 437         readl(&regs->outbound_intr_mask);
 438 }
 439
 440 /**
 441  * megasas_read_fw_status_reg_xscale - returns the current FW status value
 442  * @regs:                       MFI register set
 443  */
 444 static u32
 445 megasas_read_fw_status_reg_xscale(struct megasas_instance *instance)
 446 {
 447         return readl(&instance->reg_set->outbound_msg_0);
 448 }
 449 /**
 450  * megasas_clear_interrupt_xscale -     Check & clear interrupt
 451  * @regs:                               MFI register set
 452  */
 453 static int
 454 megasas_clear_intr_xscale(struct megasas_instance *instance)
 455 {
 456         u32 status;
 457         u32 mfiStatus = 0;
 458         struct megasas_register_set __iomem *regs;
 459         regs = instance->reg_set;
 460
 461         /*
 462          * Check if it is our interrupt
 463          */
 464         status = readl(&regs->outbound_intr_status);
 465
 466         if (status & MFI_OB_INTR_STATUS_MASK)
 467                 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
 468         if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT)
 469                 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
 470
 471         /*
 472          * Clear the interrupt by writing back the same value
 473          */
 474         if (mfiStatus)
 475                 writel(status, &regs->outbound_intr_status);
 476
 477         /* Dummy readl to force pci flush */
 478         readl(&regs->outbound_intr_status);
 479
 480         return mfiStatus;
 481 }
 482
 483 /**
 484  * megasas_fire_cmd_xscale -    Sends command to the FW
 485  * @frame_phys_addr :           Physical address of cmd
 486  * @frame_count :               Number of frames for the command
 487  * @regs :                      MFI register set
 488  */
 489 static inline void
 490 megasas_fire_cmd_xscale(struct megasas_instance *instance,
 491                 dma_addr_t frame_phys_addr,
 492                 u32 frame_count,
 493                 struct megasas_register_set __iomem *regs)
 494 {
 495         unsigned long flags;
 496
 497         spin_lock_irqsave(&instance->hba_lock, flags);
 498         writel((frame_phys_addr >> 3)|(frame_count),
 499                &(regs)->inbound_queue_port);
 500         spin_unlock_irqrestore(&instance->hba_lock, flags);
 501 }
 502
 503 /**
 504  * megasas_adp_reset_xscale -  For controller reset
 505  * @regs:                              MFI register set
 506  */
 507 static int
 508 megasas_adp_reset_xscale(struct megasas_instance *instance,
 509         struct megasas_register_set __iomem *regs)
 510 {
 511         u32 i;
 512         u32 pcidata;
 513
 514         writel(MFI_ADP_RESET, &regs->inbound_doorbell);
 515
 516         for (i = 0; i < 3; i++)
 517                 msleep(1000); /* sleep for 3 secs */
 518         pcidata  = 0;
 519         pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata);
 520         dev_notice(&instance->pdev->dev, "pcidata = %x\n", pcidata);
 521         if (pcidata & 0x2) {
 522                 dev_notice(&instance->pdev->dev, "mfi 1068 offset read=%x\n", pcidata);
 523                 pcidata &= ~0x2;
 524                 pci_write_config_dword(instance->pdev,
 525                                 MFI_1068_PCSR_OFFSET, pcidata);
 526
 527                 for (i = 0; i < 2; i++)
 528                         msleep(1000); /* need to wait 2 secs again */
 529
 530                 pcidata  = 0;
 531                 pci_read_config_dword(instance->pdev,
 532                                 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata);
 533                 dev_notice(&instance->pdev->dev, "1068 offset handshake read=%x\n", pcidata);
 534                 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) {
 535                         dev_notice(&instance->pdev->dev, "1068 offset pcidt=%x\n", pcidata);
 536                         pcidata = 0;
 537                         pci_write_config_dword(instance->pdev,
 538                                 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata);
 539                 }
 540         }
 541         return 0;
 542 }
 543
 544 /**
 545  * megasas_check_reset_xscale - For controller reset check
 546  * @regs:                               MFI register set
 547  */
 548 static int
 549 megasas_check_reset_xscale(struct megasas_instance *instance,
 550                 struct megasas_register_set __iomem *regs)
 551 {
 552         if ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) &&
 553             (le32_to_cpu(*instance->consumer) ==
 554                 MEGASAS_ADPRESET_INPROG_SIGN))
 555                 return 1;
 556         return 0;
 557 }
 558
 559 static struct megasas_instance_template megasas_instance_template_xscale = {
 560
 561         .fire_cmd = megasas_fire_cmd_xscale,
 562         .enable_intr = megasas_enable_intr_xscale,
 563         .disable_intr = megasas_disable_intr_xscale,
 564         .clear_intr = megasas_clear_intr_xscale,
 565         .read_fw_status_reg = megasas_read_fw_status_reg_xscale,
 566         .adp_reset = megasas_adp_reset_xscale,
 567         .check_reset = megasas_check_reset_xscale,
 568         .service_isr = megasas_isr,
 569         .tasklet = megasas_complete_cmd_dpc,
 570         .init_adapter = megasas_init_adapter_mfi,
 571         .build_and_issue_cmd = megasas_build_and_issue_cmd,
 572         .issue_dcmd = megasas_issue_dcmd,
 573 };
 574
 575 /**
 576 *       This is the end of set of functions & definitions specific
 577 *       to xscale (deviceid : 1064R, PERC5) controllers
 578 */
 579
 580 /**
 581 *       The following functions are defined for ppc (deviceid : 0x60)
 582 *       controllers
 583 */
 584
 585 /**
 586  * megasas_enable_intr_ppc -    Enables interrupts
 587  * @regs:                       MFI register set
 588  */
 589 static inline void
 590 megasas_enable_intr_ppc(struct megasas_instance *instance)
 591 {
 592         struct megasas_register_set __iomem *regs;
 593
 594         regs = instance->reg_set;
 595         writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
 596
 597         writel(~0x80000000, &(regs)->outbound_intr_mask);
 598
 599         /* Dummy readl to force pci flush */
 600         readl(&regs->outbound_intr_mask);
 601 }
 602
 603 /**
 604  * megasas_disable_intr_ppc -   Disable interrupt
 605  * @regs:                       MFI register set
 606  */
 607 static inline void
 608 megasas_disable_intr_ppc(struct megasas_instance *instance)
 609 {
 610         struct megasas_register_set __iomem *regs;
 611         u32 mask = 0xFFFFFFFF;
 612
 613         regs = instance->reg_set;
 614         writel(mask, &regs->outbound_intr_mask);
 615         /* Dummy readl to force pci flush */
 616         readl(&regs->outbound_intr_mask);
 617 }
 618
 619 /**
 620  * megasas_read_fw_status_reg_ppc - returns the current FW status value
 621  * @regs:                       MFI register set
 622  */
 623 static u32
 624 megasas_read_fw_status_reg_ppc(struct megasas_instance *instance)
 625 {
 626         return readl(&instance->reg_set->outbound_scratch_pad_0);
 627 }
 628
 629 /**
 630  * megasas_clear_interrupt_ppc -        Check & clear interrupt
 631  * @regs:                               MFI register set
 632  */
 633 static int
 634 megasas_clear_intr_ppc(struct megasas_instance *instance)
 635 {
 636         u32 status, mfiStatus = 0;
 637         struct megasas_register_set __iomem *regs;
 638         regs = instance->reg_set;
 639
 640         /*
 641          * Check if it is our interrupt
 642          */
 643         status = readl(&regs->outbound_intr_status);
 644
 645         if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT)
 646                 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
 647
 648         if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT)
 649                 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
 650
 651         /*
 652          * Clear the interrupt by writing back the same value
 653          */
 654         writel(status, &regs->outbound_doorbell_clear);
 655
 656         /* Dummy readl to force pci flush */
 657         readl(&regs->outbound_doorbell_clear);
 658
 659         return mfiStatus;
 660 }
 661
 662 /**
 663  * megasas_fire_cmd_ppc -       Sends command to the FW
 664  * @frame_phys_addr :           Physical address of cmd
 665  * @frame_count :               Number of frames for the command
 666  * @regs :                      MFI register set
 667  */
 668 static inline void
 669 megasas_fire_cmd_ppc(struct megasas_instance *instance,
 670                 dma_addr_t frame_phys_addr,
 671                 u32 frame_count,
 672                 struct megasas_register_set __iomem *regs)
 673 {
 674         unsigned long flags;
 675
 676         spin_lock_irqsave(&instance->hba_lock, flags);
 677         writel((frame_phys_addr | (frame_count<<1))|1,
 678                         &(regs)->inbound_queue_port);
 679         spin_unlock_irqrestore(&instance->hba_lock, flags);
 680 }
 681
 682 /**
 683  * megasas_check_reset_ppc -    For controller reset check
 684  * @regs:                               MFI register set
 685  */
 686 static int
 687 megasas_check_reset_ppc(struct megasas_instance *instance,
 688                         struct megasas_register_set __iomem *regs)
 689 {
 690         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
 691                 return 1;
 692
 693         return 0;
 694 }
 695
 696 static struct megasas_instance_template megasas_instance_template_ppc = {
 697
 698         .fire_cmd = megasas_fire_cmd_ppc,
 699         .enable_intr = megasas_enable_intr_ppc,
 700         .disable_intr = megasas_disable_intr_ppc,
 701         .clear_intr = megasas_clear_intr_ppc,
 702         .read_fw_status_reg = megasas_read_fw_status_reg_ppc,
 703         .adp_reset = megasas_adp_reset_xscale,
 704         .check_reset = megasas_check_reset_ppc,
 705         .service_isr = megasas_isr,
 706         .tasklet = megasas_complete_cmd_dpc,
 707         .init_adapter = megasas_init_adapter_mfi,
 708         .build_and_issue_cmd = megasas_build_and_issue_cmd,
 709         .issue_dcmd = megasas_issue_dcmd,
 710 };
 711
 712 /**
 713  * megasas_enable_intr_skinny - Enables interrupts
 714  * @regs:                       MFI register set
 715  */
 716 static inline void
 717 megasas_enable_intr_skinny(struct megasas_instance *instance)
 718 {
 719         struct megasas_register_set __iomem *regs;
 720
 721         regs = instance->reg_set;
 722         writel(0xFFFFFFFF, &(regs)->outbound_intr_mask);
 723
 724         writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
 725
 726         /* Dummy readl to force pci flush */
 727         readl(&regs->outbound_intr_mask);
 728 }
 729
 730 /**
 731  * megasas_disable_intr_skinny -        Disables interrupt
 732  * @regs:                       MFI register set
 733  */
 734 static inline void
 735 megasas_disable_intr_skinny(struct megasas_instance *instance)
 736 {
 737         struct megasas_register_set __iomem *regs;
 738         u32 mask = 0xFFFFFFFF;
 739
 740         regs = instance->reg_set;
 741         writel(mask, &regs->outbound_intr_mask);
 742         /* Dummy readl to force pci flush */
 743         readl(&regs->outbound_intr_mask);
 744 }
 745
 746 /**
 747  * megasas_read_fw_status_reg_skinny - returns the current FW status value
 748  * @regs:                       MFI register set
 749  */
 750 static u32
 751 megasas_read_fw_status_reg_skinny(struct megasas_instance *instance)
 752 {
 753         return readl(&instance->reg_set->outbound_scratch_pad_0);
 754 }
 755
 756 /**
 757  * megasas_clear_interrupt_skinny -     Check & clear interrupt
 758  * @regs:                               MFI register set
 759  */
 760 static int
 761 megasas_clear_intr_skinny(struct megasas_instance *instance)
 762 {
 763         u32 status;
 764         u32 mfiStatus = 0;
 765         struct megasas_register_set __iomem *regs;
 766         regs = instance->reg_set;
 767
 768         /*
 769          * Check if it is our interrupt
 770          */
 771         status = readl(&regs->outbound_intr_status);
 772
 773         if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) {
 774                 return 0;
 775         }
 776
 777         /*
 778          * Check if it is our interrupt
 779          */
 780         if ((megasas_read_fw_status_reg_skinny(instance) & MFI_STATE_MASK) ==
 781             MFI_STATE_FAULT) {
 782                 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
 783         } else
 784                 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
 785
 786         /*
 787          * Clear the interrupt by writing back the same value
 788          */
 789         writel(status, &regs->outbound_intr_status);
 790
 791         /*
 792          * dummy read to flush PCI
 793          */
 794         readl(&regs->outbound_intr_status);
 795
 796         return mfiStatus;
 797 }
 798
 799 /**
 800  * megasas_fire_cmd_skinny -    Sends command to the FW
 801  * @frame_phys_addr :           Physical address of cmd
 802  * @frame_count :               Number of frames for the command
 803  * @regs :                      MFI register set
 804  */
 805 static inline void
 806 megasas_fire_cmd_skinny(struct megasas_instance *instance,
 807                         dma_addr_t frame_phys_addr,
 808                         u32 frame_count,
 809                         struct megasas_register_set __iomem *regs)
 810 {
 811         unsigned long flags;
 812
 813         spin_lock_irqsave(&instance->hba_lock, flags);
 814         writel(upper_32_bits(frame_phys_addr),
 815                &(regs)->inbound_high_queue_port);
 816         writel((lower_32_bits(frame_phys_addr) | (frame_count<<1))|1,
 817                &(regs)->inbound_low_queue_port);
 818         spin_unlock_irqrestore(&instance->hba_lock, flags);
 819 }
 820
 821 /**
 822  * megasas_check_reset_skinny - For controller reset check
 823  * @regs:                               MFI register set
 824  */
 825 static int
 826 megasas_check_reset_skinny(struct megasas_instance *instance,
 827                                 struct megasas_register_set __iomem *regs)
 828 {
 829         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
 830                 return 1;
 831
 832         return 0;
 833 }
 834
 835 static struct megasas_instance_template megasas_instance_template_skinny = {
 836
 837         .fire_cmd = megasas_fire_cmd_skinny,
 838         .enable_intr = megasas_enable_intr_skinny,
 839         .disable_intr = megasas_disable_intr_skinny,
 840         .clear_intr = megasas_clear_intr_skinny,
 841         .read_fw_status_reg = megasas_read_fw_status_reg_skinny,
 842         .adp_reset = megasas_adp_reset_gen2,
 843         .check_reset = megasas_check_reset_skinny,
 844         .service_isr = megasas_isr,
 845         .tasklet = megasas_complete_cmd_dpc,
 846         .init_adapter = megasas_init_adapter_mfi,
 847         .build_and_issue_cmd = megasas_build_and_issue_cmd,
 848         .issue_dcmd = megasas_issue_dcmd,
 849 };
 850
 851
 852 /**
 853 *       The following functions are defined for gen2 (deviceid : 0x78 0x79)
 854 *       controllers
 855 */
 856
 857 /**
 858  * megasas_enable_intr_gen2 -  Enables interrupts
 859  * @regs:                      MFI register set
 860  */
 861 static inline void
 862 megasas_enable_intr_gen2(struct megasas_instance *instance)
 863 {
 864         struct megasas_register_set __iomem *regs;
 865
 866         regs = instance->reg_set;
 867         writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
 868
 869         /* write ~0x00000005 (4 & 1) to the intr mask*/
 870         writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
 871
 872         /* Dummy readl to force pci flush */
 873         readl(&regs->outbound_intr_mask);
 874 }
 875
 876 /**
 877  * megasas_disable_intr_gen2 - Disables interrupt
 878  * @regs:                      MFI register set
 879  */
 880 static inline void
 881 megasas_disable_intr_gen2(struct megasas_instance *instance)
 882 {
 883         struct megasas_register_set __iomem *regs;
 884         u32 mask = 0xFFFFFFFF;
 885
 886         regs = instance->reg_set;
 887         writel(mask, &regs->outbound_intr_mask);
 888         /* Dummy readl to force pci flush */
 889         readl(&regs->outbound_intr_mask);
 890 }
 891
 892 /**
 893  * megasas_read_fw_status_reg_gen2 - returns the current FW status value
 894  * @regs:                      MFI register set
 895  */
 896 static u32
 897 megasas_read_fw_status_reg_gen2(struct megasas_instance *instance)
 898 {
 899         return readl(&instance->reg_set->outbound_scratch_pad_0);
 900 }
 901
 902 /**
 903  * megasas_clear_interrupt_gen2 -      Check & clear interrupt
 904  * @regs:                              MFI register set
 905  */
 906 static int
 907 megasas_clear_intr_gen2(struct megasas_instance *instance)
 908 {
 909         u32 status;
 910         u32 mfiStatus = 0;
 911         struct megasas_register_set __iomem *regs;
 912         regs = instance->reg_set;
 913
 914         /*
 915          * Check if it is our interrupt
 916          */
 917         status = readl(&regs->outbound_intr_status);
 918
 919         if (status & MFI_INTR_FLAG_REPLY_MESSAGE) {
 920                 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
 921         }
 922         if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) {
 923                 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
 924         }
 925
 926         /*
 927          * Clear the interrupt by writing back the same value
 928          */
 929         if (mfiStatus)
 930                 writel(status, &regs->outbound_doorbell_clear);
 931
 932         /* Dummy readl to force pci flush */
 933         readl(&regs->outbound_intr_status);
 934
 935         return mfiStatus;
 936 }
 937 /**
 938  * megasas_fire_cmd_gen2 -     Sends command to the FW
 939  * @frame_phys_addr :          Physical address of cmd
 940  * @frame_count :              Number of frames for the command
 941  * @regs :                     MFI register set
 942  */
 943 static inline void
 944 megasas_fire_cmd_gen2(struct megasas_instance *instance,
 945                         dma_addr_t frame_phys_addr,
 946                         u32 frame_count,
 947                         struct megasas_register_set __iomem *regs)
 948 {
 949         unsigned long flags;
 950
 951         spin_lock_irqsave(&instance->hba_lock, flags);
 952         writel((frame_phys_addr | (frame_count<<1))|1,
 953                         &(regs)->inbound_queue_port);
 954         spin_unlock_irqrestore(&instance->hba_lock, flags);
 955 }
 956
 957 /**
 958  * megasas_adp_reset_gen2 -     For controller reset
 959  * @regs:                               MFI register set
 960  */
 961 static int
 962 megasas_adp_reset_gen2(struct megasas_instance *instance,
 963                         struct megasas_register_set __iomem *reg_set)
 964 {
 965         u32 retry = 0 ;
 966         u32 HostDiag;
 967         u32 __iomem *seq_offset = &reg_set->seq_offset;
 968         u32 __iomem *hostdiag_offset = &reg_set->host_diag;
 969
 970         if (instance->instancet == &megasas_instance_template_skinny) {
 971                 seq_offset = &reg_set->fusion_seq_offset;
 972                 hostdiag_offset = &reg_set->fusion_host_diag;
 973         }
 974
 975         writel(0, seq_offset);
 976         writel(4, seq_offset);
 977         writel(0xb, seq_offset);
 978         writel(2, seq_offset);
 979         writel(7, seq_offset);
 980         writel(0xd, seq_offset);
 981
 982         msleep(1000);
 983
 984         HostDiag = (u32)readl(hostdiag_offset);
 985
 986         while (!(HostDiag & DIAG_WRITE_ENABLE)) {
 987                 msleep(100);
 988                 HostDiag = (u32)readl(hostdiag_offset);
 989                 dev_notice(&instance->pdev->dev, "RESETGEN2: retry=%x, hostdiag=%x\n",
 990                                         retry, HostDiag);
 991
 992                 if (retry++ >= 100)
 993                         return 1;
 994
 995         }
 996
 997         dev_notice(&instance->pdev->dev, "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag);
 998
 999         writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset);
1000
1001         ssleep(10);
1002
1003         HostDiag = (u32)readl(hostdiag_offset);
1004         while (HostDiag & DIAG_RESET_ADAPTER) {
1005                 msleep(100);
1006                 HostDiag = (u32)readl(hostdiag_offset);
1007                 dev_notice(&instance->pdev->dev, "RESET_GEN2: retry=%x, hostdiag=%x\n",
1008                                 retry, HostDiag);
1009
1010                 if (retry++ >= 1000)
1011                         return 1;
1012
1013         }
1014         return 0;
1015 }
1016
1017 /**
1018  * megasas_check_reset_gen2 -   For controller reset check
1019  * @regs:                               MFI register set
1020  */
1021 static int
1022 megasas_check_reset_gen2(struct megasas_instance *instance,
1023                 struct megasas_register_set __iomem *regs)
1024 {
1025         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
1026                 return 1;
1027
1028         return 0;
1029 }
1030
1031 static struct megasas_instance_template megasas_instance_template_gen2 = {
1032
1033         .fire_cmd = megasas_fire_cmd_gen2,
1034         .enable_intr = megasas_enable_intr_gen2,
1035         .disable_intr = megasas_disable_intr_gen2,
1036         .clear_intr = megasas_clear_intr_gen2,
1037         .read_fw_status_reg = megasas_read_fw_status_reg_gen2,
1038         .adp_reset = megasas_adp_reset_gen2,
1039         .check_reset = megasas_check_reset_gen2,
1040         .service_isr = megasas_isr,
1041         .tasklet = megasas_complete_cmd_dpc,
1042         .init_adapter = megasas_init_adapter_mfi,
1043         .build_and_issue_cmd = megasas_build_and_issue_cmd,
1044         .issue_dcmd = megasas_issue_dcmd,
1045 };
1046
1047 /**
1048 *       This is the end of set of functions & definitions
1049 *       specific to gen2 (deviceid : 0x78, 0x79) controllers
1050 */
1051
1052 /*
1053  * Template added for TB (Fusion)
1054  */
1055 extern struct megasas_instance_template megasas_instance_template_fusion;
1056
1057 /**
1058  * megasas_issue_polled -       Issues a polling command
1059  * @instance:                   Adapter soft state
1060  * @cmd:                        Command packet to be issued
1061  *
1062  * For polling, MFI requires the cmd_status to be set to MFI_STAT_INVALID_STATUS before posting.
1063  */
1064 int
1065 megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
1066 {
1067         struct megasas_header *frame_hdr = &cmd->frame->hdr;
1068
1069         frame_hdr->cmd_status = MFI_STAT_INVALID_STATUS;
1070         frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
1071
1072         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1073                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1074                         __func__, __LINE__);
1075                 return DCMD_NOT_FIRED;
1076         }
1077
1078         instance->instancet->issue_dcmd(instance, cmd);
1079
1080         return wait_and_poll(instance, cmd, instance->requestorId ?
1081                         MEGASAS_ROUTINE_WAIT_TIME_VF : MFI_IO_TIMEOUT_SECS);
1082 }
1083
1084 /**
1085  * megasas_issue_blocked_cmd -  Synchronous wrapper around regular FW cmds
1086  * @instance:                   Adapter soft state
1087  * @cmd:                        Command to be issued
1088  * @timeout:                    Timeout in seconds
1089  *
1090  * This function waits on an event for the command to be returned from ISR.
1091  * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1092  * Used to issue ioctl commands.
1093  */
1094 int
1095 megasas_issue_blocked_cmd(struct megasas_instance *instance,
1096                           struct megasas_cmd *cmd, int timeout)
1097 {
1098         int ret = 0;
1099         cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
1100
1101         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1102                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1103                         __func__, __LINE__);
1104                 return DCMD_NOT_FIRED;
1105         }
1106
1107         instance->instancet->issue_dcmd(instance, cmd);
1108
1109         if (timeout) {
1110                 ret = wait_event_timeout(instance->int_cmd_wait_q,
1111                                 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS, timeout * HZ);
1112                 if (!ret) {
1113                         dev_err(&instance->pdev->dev, "Failed from %s %d DCMD Timed out\n",
1114                                 __func__, __LINE__);
1115                         return DCMD_TIMEOUT;
1116                 }
1117         } else
1118                 wait_event(instance->int_cmd_wait_q,
1119                                 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS);
1120
1121         return (cmd->cmd_status_drv == MFI_STAT_OK) ?
1122                 DCMD_SUCCESS : DCMD_FAILED;
1123 }
1124
1125 /**
1126  * megasas_issue_blocked_abort_cmd -    Aborts previously issued cmd
1127  * @instance:                           Adapter soft state
1128  * @cmd_to_abort:                       Previously issued cmd to be aborted
1129  * @timeout:                            Timeout in seconds
1130  *
1131  * MFI firmware can abort previously issued AEN comamnd (automatic event
1132  * notification). The megasas_issue_blocked_abort_cmd() issues such abort
1133  * cmd and waits for return status.
1134  * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1135  */
1136 static int
1137 megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
1138                                 struct megasas_cmd *cmd_to_abort, int timeout)
1139 {
1140         struct megasas_cmd *cmd;
1141         struct megasas_abort_frame *abort_fr;
1142         int ret = 0;
1143
1144         cmd = megasas_get_cmd(instance);
1145
1146         if (!cmd)
1147                 return -1;
1148
1149         abort_fr = &cmd->frame->abort;
1150
1151         /*
1152          * Prepare and issue the abort frame
1153          */
1154         abort_fr->cmd = MFI_CMD_ABORT;
1155         abort_fr->cmd_status = MFI_STAT_INVALID_STATUS;
1156         abort_fr->flags = cpu_to_le16(0);
1157         abort_fr->abort_context = cpu_to_le32(cmd_to_abort->index);
1158         abort_fr->abort_mfi_phys_addr_lo =
1159                 cpu_to_le32(lower_32_bits(cmd_to_abort->frame_phys_addr));
1160         abort_fr->abort_mfi_phys_addr_hi =
1161                 cpu_to_le32(upper_32_bits(cmd_to_abort->frame_phys_addr));
1162
1163         cmd->sync_cmd = 1;
1164         cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
1165
1166         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1167                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1168                         __func__, __LINE__);
1169                 return DCMD_NOT_FIRED;
1170         }
1171
1172         instance->instancet->issue_dcmd(instance, cmd);
1173
1174         if (timeout) {
1175                 ret = wait_event_timeout(instance->abort_cmd_wait_q,
1176                                 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS, timeout * HZ);
1177                 if (!ret) {
1178                         dev_err(&instance->pdev->dev, "Failed from %s %d Abort Timed out\n",
1179                                 __func__, __LINE__);
1180                         return DCMD_TIMEOUT;
1181                 }
1182         } else
1183                 wait_event(instance->abort_cmd_wait_q,
1184                                 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS);
1185
1186         cmd->sync_cmd = 0;
1187
1188         megasas_return_cmd(instance, cmd);
1189         return (cmd->cmd_status_drv == MFI_STAT_OK) ?
1190                 DCMD_SUCCESS : DCMD_FAILED;
1191 }
1192
1193 /**
1194  * megasas_make_sgl32 - Prepares 32-bit SGL
1195  * @instance:           Adapter soft state
1196  * @scp:                SCSI command from the mid-layer
1197  * @mfi_sgl:            SGL to be filled in
1198  *
1199  * If successful, this function returns the number of SG elements. Otherwise,
1200  * it returnes -1.
1201  */
1202 static int
1203 megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp,
1204                    union megasas_sgl *mfi_sgl)
1205 {
1206         int i;
1207         int sge_count;
1208         struct scatterlist *os_sgl;
1209
1210         sge_count = scsi_dma_map(scp);
1211         BUG_ON(sge_count < 0);
1212
1213         if (sge_count) {
1214                 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1215                         mfi_sgl->sge32[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1216                         mfi_sgl->sge32[i].phys_addr = cpu_to_le32(sg_dma_address(os_sgl));
1217                 }
1218         }
1219         return sge_count;
1220 }
1221
1222 /**
1223  * megasas_make_sgl64 - Prepares 64-bit SGL
1224  * @instance:           Adapter soft state
1225  * @scp:                SCSI command from the mid-layer
1226  * @mfi_sgl:            SGL to be filled in
1227  *
1228  * If successful, this function returns the number of SG elements. Otherwise,
1229  * it returnes -1.
1230  */
1231 static int
1232 megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp,
1233                    union megasas_sgl *mfi_sgl)
1234 {
1235         int i;
1236         int sge_count;
1237         struct scatterlist *os_sgl;
1238
1239         sge_count = scsi_dma_map(scp);
1240         BUG_ON(sge_count < 0);
1241
1242         if (sge_count) {
1243                 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1244                         mfi_sgl->sge64[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1245                         mfi_sgl->sge64[i].phys_addr = cpu_to_le64(sg_dma_address(os_sgl));
1246                 }
1247         }
1248         return sge_count;
1249 }
1250
1251 /**
1252  * megasas_make_sgl_skinny - Prepares IEEE SGL
1253  * @instance:           Adapter soft state
1254  * @scp:                SCSI command from the mid-layer
1255  * @mfi_sgl:            SGL to be filled in
1256  *
1257  * If successful, this function returns the number of SG elements. Otherwise,
1258  * it returnes -1.
1259  */
1260 static int
1261 megasas_make_sgl_skinny(struct megasas_instance *instance,
1262                 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)
1263 {
1264         int i;
1265         int sge_count;
1266         struct scatterlist *os_sgl;
1267
1268         sge_count = scsi_dma_map(scp);
1269
1270         if (sge_count) {
1271                 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1272                         mfi_sgl->sge_skinny[i].length =
1273                                 cpu_to_le32(sg_dma_len(os_sgl));
1274                         mfi_sgl->sge_skinny[i].phys_addr =
1275                                 cpu_to_le64(sg_dma_address(os_sgl));
1276                         mfi_sgl->sge_skinny[i].flag = cpu_to_le32(0);
1277                 }
1278         }
1279         return sge_count;
1280 }
1281
1282  /**
1283  * megasas_get_frame_count - Computes the number of frames
1284  * @frame_type          : type of frame- io or pthru frame
1285  * @sge_count           : number of sg elements
1286  *
1287  * Returns the number of frames required for numnber of sge's (sge_count)
1288  */
1289
1290 static u32 megasas_get_frame_count(struct megasas_instance *instance,
1291                         u8 sge_count, u8 frame_type)
1292 {
1293         int num_cnt;
1294         int sge_bytes;
1295         u32 sge_sz;
1296         u32 frame_count = 0;
1297
1298         sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
1299             sizeof(struct megasas_sge32);
1300
1301         if (instance->flag_ieee) {
1302                 sge_sz = sizeof(struct megasas_sge_skinny);
1303         }
1304
1305         /*
1306          * Main frame can contain 2 SGEs for 64-bit SGLs and
1307          * 3 SGEs for 32-bit SGLs for ldio &
1308          * 1 SGEs for 64-bit SGLs and
1309          * 2 SGEs for 32-bit SGLs for pthru frame
1310          */
1311         if (unlikely(frame_type == PTHRU_FRAME)) {
1312                 if (instance->flag_ieee == 1) {
1313                         num_cnt = sge_count - 1;
1314                 } else if (IS_DMA64)
1315                         num_cnt = sge_count - 1;
1316                 else
1317                         num_cnt = sge_count - 2;
1318         } else {
1319                 if (instance->flag_ieee == 1) {
1320                         num_cnt = sge_count - 1;
1321                 } else if (IS_DMA64)
1322                         num_cnt = sge_count - 2;
1323                 else
1324                         num_cnt = sge_count - 3;
1325         }
1326
1327         if (num_cnt > 0) {
1328                 sge_bytes = sge_sz * num_cnt;
1329
1330                 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
1331                     ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ;
1332         }
1333         /* Main frame */
1334         frame_count += 1;
1335
1336         if (frame_count > 7)
1337                 frame_count = 8;
1338         return frame_count;
1339 }
1340
1341 /**
1342  * megasas_build_dcdb - Prepares a direct cdb (DCDB) command
1343  * @instance:           Adapter soft state
1344  * @scp:                SCSI command
1345  * @cmd:                Command to be prepared in
1346  *
1347  * This function prepares CDB commands. These are typcially pass-through
1348  * commands to the devices.
1349  */
1350 static int
1351 megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
1352                    struct megasas_cmd *cmd)
1353 {
1354         u32 is_logical;
1355         u32 device_id;
1356         u16 flags = 0;
1357         struct megasas_pthru_frame *pthru;
1358
1359         is_logical = MEGASAS_IS_LOGICAL(scp->device);
1360         device_id = MEGASAS_DEV_INDEX(scp);
1361         pthru = (struct megasas_pthru_frame *)cmd->frame;
1362
1363         if (scp->sc_data_direction == DMA_TO_DEVICE)
1364                 flags = MFI_FRAME_DIR_WRITE;
1365         else if (scp->sc_data_direction == DMA_FROM_DEVICE)
1366                 flags = MFI_FRAME_DIR_READ;
1367         else if (scp->sc_data_direction == DMA_NONE)
1368                 flags = MFI_FRAME_DIR_NONE;
1369
1370         if (instance->flag_ieee == 1) {
1371                 flags |= MFI_FRAME_IEEE;
1372         }
1373
1374         /*
1375          * Prepare the DCDB frame
1376          */
1377         pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO;
1378         pthru->cmd_status = 0x0;
1379         pthru->scsi_status = 0x0;
1380         pthru->target_id = device_id;
1381         pthru->lun = scp->device->lun;
1382         pthru->cdb_len = scp->cmd_len;
1383         pthru->timeout = 0;
1384         pthru->pad_0 = 0;
1385         pthru->flags = cpu_to_le16(flags);
1386         pthru->data_xfer_len = cpu_to_le32(scsi_bufflen(scp));
1387
1388         memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
1389
1390         /*
1391          * If the command is for the tape device, set the
1392          * pthru timeout to the os layer timeout value.
1393          */
1394         if (scp->device->type == TYPE_TAPE) {
1395                 if ((scp->request->timeout / HZ) > 0xFFFF)
1396                         pthru->timeout = cpu_to_le16(0xFFFF);
1397                 else
1398                         pthru->timeout = cpu_to_le16(scp->request->timeout / HZ);
1399         }
1400
1401         /*
1402          * Construct SGL
1403          */
1404         if (instance->flag_ieee == 1) {
1405                 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1406                 pthru->sge_count = megasas_make_sgl_skinny(instance, scp,
1407                                                       &pthru->sgl);
1408         } else if (IS_DMA64) {
1409                 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1410                 pthru->sge_count = megasas_make_sgl64(instance, scp,
1411                                                       &pthru->sgl);
1412         } else
1413                 pthru->sge_count = megasas_make_sgl32(instance, scp,
1414                                                       &pthru->sgl);
1415
1416         if (pthru->sge_count > instance->max_num_sge) {
1417                 dev_err(&instance->pdev->dev, "DCDB too many SGE NUM=%x\n",
1418                         pthru->sge_count);
1419                 return 0;
1420         }
1421
1422         /*
1423          * Sense info specific
1424          */
1425         pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
1426         pthru->sense_buf_phys_addr_hi =
1427                 cpu_to_le32(upper_32_bits(cmd->sense_phys_addr));
1428         pthru->sense_buf_phys_addr_lo =
1429                 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
1430
1431         /*
1432          * Compute the total number of frames this command consumes. FW uses
1433          * this number to pull sufficient number of frames from host memory.
1434          */
1435         cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count,
1436                                                         PTHRU_FRAME);
1437
1438         return cmd->frame_count;
1439 }
1440
1441 /**
1442  * megasas_build_ldio - Prepares IOs to logical devices
1443  * @instance:           Adapter soft state
1444  * @scp:                SCSI command
1445  * @cmd:                Command to be prepared
1446  *
1447  * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
1448  */
1449 static int
1450 megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
1451                    struct megasas_cmd *cmd)
1452 {
1453         u32 device_id;
1454         u8 sc = scp->cmnd[0];
1455         u16 flags = 0;
1456         struct megasas_io_frame *ldio;
1457
1458         device_id = MEGASAS_DEV_INDEX(scp);
1459         ldio = (struct megasas_io_frame *)cmd->frame;
1460
1461         if (scp->sc_data_direction == DMA_TO_DEVICE)
1462                 flags = MFI_FRAME_DIR_WRITE;
1463         else if (scp->sc_data_direction == DMA_FROM_DEVICE)
1464                 flags = MFI_FRAME_DIR_READ;
1465
1466         if (instance->flag_ieee == 1) {
1467                 flags |= MFI_FRAME_IEEE;
1468         }
1469
1470         /*
1471          * Prepare the Logical IO frame: 2nd bit is zero for all read cmds
1472          */
1473         ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ;
1474         ldio->cmd_status = 0x0;
1475         ldio->scsi_status = 0x0;
1476         ldio->target_id = device_id;
1477         ldio->timeout = 0;
1478         ldio->reserved_0 = 0;
1479         ldio->pad_0 = 0;
1480         ldio->flags = cpu_to_le16(flags);
1481         ldio->start_lba_hi = 0;
1482         ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;
1483
1484         /*
1485          * 6-byte READ(0x08) or WRITE(0x0A) cdb
1486          */
1487         if (scp->cmd_len == 6) {
1488                 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[4]);
1489                 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[1] << 16) |
1490                                                  ((u32) scp->cmnd[2] << 8) |
1491                                                  (u32) scp->cmnd[3]);
1492
1493                 ldio->start_lba_lo &= cpu_to_le32(0x1FFFFF);
1494         }
1495
1496         /*
1497          * 10-byte READ(0x28) or WRITE(0x2A) cdb
1498          */
1499         else if (scp->cmd_len == 10) {
1500                 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[8] |
1501                                               ((u32) scp->cmnd[7] << 8));
1502                 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1503                                                  ((u32) scp->cmnd[3] << 16) |
1504                                                  ((u32) scp->cmnd[4] << 8) |
1505                                                  (u32) scp->cmnd[5]);
1506         }
1507
1508         /*
1509          * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1510          */
1511         else if (scp->cmd_len == 12) {
1512                 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1513                                               ((u32) scp->cmnd[7] << 16) |
1514                                               ((u32) scp->cmnd[8] << 8) |
1515                                               (u32) scp->cmnd[9]);
1516
1517                 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1518                                                  ((u32) scp->cmnd[3] << 16) |
1519                                                  ((u32) scp->cmnd[4] << 8) |
1520                                                  (u32) scp->cmnd[5]);
1521         }
1522
1523         /*
1524          * 16-byte READ(0x88) or WRITE(0x8A) cdb
1525          */
1526         else if (scp->cmd_len == 16) {
1527                 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[10] << 24) |
1528                                               ((u32) scp->cmnd[11] << 16) |
1529                                               ((u32) scp->cmnd[12] << 8) |
1530                                               (u32) scp->cmnd[13]);
1531
1532                 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1533                                                  ((u32) scp->cmnd[7] << 16) |
1534                                                  ((u32) scp->cmnd[8] << 8) |
1535                                                  (u32) scp->cmnd[9]);
1536
1537                 ldio->start_lba_hi = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1538                                                  ((u32) scp->cmnd[3] << 16) |
1539                                                  ((u32) scp->cmnd[4] << 8) |
1540                                                  (u32) scp->cmnd[5]);
1541
1542         }
1543
1544         /*
1545          * Construct SGL
1546          */
1547         if (instance->flag_ieee) {
1548                 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1549                 ldio->sge_count = megasas_make_sgl_skinny(instance, scp,
1550                                               &ldio->sgl);
1551         } else if (IS_DMA64) {
1552                 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1553                 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl);
1554         } else
1555                 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl);
1556
1557         if (ldio->sge_count > instance->max_num_sge) {
1558                 dev_err(&instance->pdev->dev, "build_ld_io: sge_count = %x\n",
1559                         ldio->sge_count);
1560                 return 0;
1561         }
1562
1563         /*
1564          * Sense info specific
1565          */
1566         ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
1567         ldio->sense_buf_phys_addr_hi = 0;
1568         ldio->sense_buf_phys_addr_lo = cpu_to_le32(cmd->sense_phys_addr);
1569
1570         /*
1571          * Compute the total number of frames this command consumes. FW uses
1572          * this number to pull sufficient number of frames from host memory.
1573          */
1574         cmd->frame_count = megasas_get_frame_count(instance,
1575                         ldio->sge_count, IO_FRAME);
1576
1577         return cmd->frame_count;
1578 }
1579
1580 /**
1581  * megasas_cmd_type -           Checks if the cmd is for logical drive/sysPD
1582  *                              and whether it's RW or non RW
1583  * @scmd:                       SCSI command
1584  *
1585  */
1586 inline int megasas_cmd_type(struct scsi_cmnd *cmd)
1587 {
1588         int ret;
1589
1590         switch (cmd->cmnd[0]) {
1591         case READ_10:
1592         case WRITE_10:
1593         case READ_12:
1594         case WRITE_12:
1595         case READ_6:
1596         case WRITE_6:
1597         case READ_16:
1598         case WRITE_16:
1599                 ret = (MEGASAS_IS_LOGICAL(cmd->device)) ?
1600                         READ_WRITE_LDIO : READ_WRITE_SYSPDIO;
1601                 break;
1602         default:
1603                 ret = (MEGASAS_IS_LOGICAL(cmd->device)) ?
1604                         NON_READ_WRITE_LDIO : NON_READ_WRITE_SYSPDIO;
1605         }
1606         return ret;
1607 }
1608
1609  /**
1610  * megasas_dump_pending_frames -        Dumps the frame address of all pending cmds
1611  *                                      in FW
1612  * @instance:                           Adapter soft state
1613  */
1614 static inline void
1615 megasas_dump_pending_frames(struct megasas_instance *instance)
1616 {
1617         struct megasas_cmd *cmd;
1618         int i,n;
1619         union megasas_sgl *mfi_sgl;
1620         struct megasas_io_frame *ldio;
1621         struct megasas_pthru_frame *pthru;
1622         u32 sgcount;
1623         u16 max_cmd = instance->max_fw_cmds;
1624
1625         dev_err(&instance->pdev->dev, "[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no);
1626         dev_err(&instance->pdev->dev, "[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding));
1627         if (IS_DMA64)
1628                 dev_err(&instance->pdev->dev, "[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no);
1629         else
1630                 dev_err(&instance->pdev->dev, "[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no);
1631
1632         dev_err(&instance->pdev->dev, "[%d]: Pending OS cmds in FW : \n",instance->host->host_no);
1633         for (i = 0; i < max_cmd; i++) {
1634                 cmd = instance->cmd_list[i];
1635                 if (!cmd->scmd)
1636                         continue;
1637                 dev_err(&instance->pdev->dev, "[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr);
1638                 if (megasas_cmd_type(cmd->scmd) == READ_WRITE_LDIO) {
1639                         ldio = (struct megasas_io_frame *)cmd->frame;
1640                         mfi_sgl = &ldio->sgl;
1641                         sgcount = ldio->sge_count;
1642                         dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x,"
1643                         " lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1644                         instance->host->host_no, cmd->frame_count, ldio->cmd, ldio->target_id,
1645                         le32_to_cpu(ldio->start_lba_lo), le32_to_cpu(ldio->start_lba_hi),
1646                         le32_to_cpu(ldio->sense_buf_phys_addr_lo), sgcount);
1647                 } else {
1648                         pthru = (struct megasas_pthru_frame *) cmd->frame;
1649                         mfi_sgl = &pthru->sgl;
1650                         sgcount = pthru->sge_count;
1651                         dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, "
1652                         "lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1653                         instance->host->host_no, cmd->frame_count, pthru->cmd, pthru->target_id,
1654                         pthru->lun, pthru->cdb_len, le32_to_cpu(pthru->data_xfer_len),
1655                         le32_to_cpu(pthru->sense_buf_phys_addr_lo), sgcount);
1656                 }
1657                 if (megasas_dbg_lvl & MEGASAS_DBG_LVL) {
1658                         for (n = 0; n < sgcount; n++) {
1659                                 if (IS_DMA64)
1660                                         dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%llx\n",
1661                                                 le32_to_cpu(mfi_sgl->sge64[n].length),
1662                                                 le64_to_cpu(mfi_sgl->sge64[n].phys_addr));
1663                                 else
1664                                         dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%x\n",
1665                                                 le32_to_cpu(mfi_sgl->sge32[n].length),
1666                                                 le32_to_cpu(mfi_sgl->sge32[n].phys_addr));
1667                         }
1668                 }
1669         } /*for max_cmd*/
1670         dev_err(&instance->pdev->dev, "[%d]: Pending Internal cmds in FW : \n",instance->host->host_no);
1671         for (i = 0; i < max_cmd; i++) {
1672
1673                 cmd = instance->cmd_list[i];
1674
1675                 if (cmd->sync_cmd == 1)
1676                         dev_err(&instance->pdev->dev, "0x%08lx : ", (unsigned long)cmd->frame_phys_addr);
1677         }
1678         dev_err(&instance->pdev->dev, "[%d]: Dumping Done\n\n",instance->host->host_no);
1679 }
1680
1681 u32
1682 megasas_build_and_issue_cmd(struct megasas_instance *instance,
1683                             struct scsi_cmnd *scmd)
1684 {
1685         struct megasas_cmd *cmd;
1686         u32 frame_count;
1687
1688         cmd = megasas_get_cmd(instance);
1689         if (!cmd)
1690                 return SCSI_MLQUEUE_HOST_BUSY;
1691
1692         /*
1693          * Logical drive command
1694          */
1695         if (megasas_cmd_type(scmd) == READ_WRITE_LDIO)
1696                 frame_count = megasas_build_ldio(instance, scmd, cmd);
1697         else
1698                 frame_count = megasas_build_dcdb(instance, scmd, cmd);
1699
1700         if (!frame_count)
1701                 goto out_return_cmd;
1702
1703         cmd->scmd = scmd;
1704         scmd->SCp.ptr = (char *)cmd;
1705
1706         /*
1707          * Issue the command to the FW
1708          */
1709         atomic_inc(&instance->fw_outstanding);
1710
1711         instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
1712                                 cmd->frame_count-1, instance->reg_set);
1713
1714         return 0;
1715 out_return_cmd:
1716         megasas_return_cmd(instance, cmd);
1717         return SCSI_MLQUEUE_HOST_BUSY;
1718 }
1719
1720
1721 /**
1722  * megasas_queue_command -      Queue entry point
1723  * @scmd:                       SCSI command to be queued
1724  * @done:                       Callback entry point
1725  */
1726 static int
1727 megasas_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
1728 {
1729         struct megasas_instance *instance;
1730         struct MR_PRIV_DEVICE *mr_device_priv_data;
1731
1732         instance = (struct megasas_instance *)
1733             scmd->device->host->hostdata;
1734
1735         if (instance->unload == 1) {
1736                 scmd->result = DID_NO_CONNECT << 16;
1737                 scmd->scsi_done(scmd);
1738                 return 0;
1739         }
1740
1741         if (instance->issuepend_done == 0)
1742                 return SCSI_MLQUEUE_HOST_BUSY;
1743
1744
1745         /* Check for an mpio path and adjust behavior */
1746         if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
1747                 if (megasas_check_mpio_paths(instance, scmd) ==
1748                     (DID_REQUEUE << 16)) {
1749                         return SCSI_MLQUEUE_HOST_BUSY;
1750                 } else {
1751                         scmd->result = DID_NO_CONNECT << 16;
1752                         scmd->scsi_done(scmd);
1753                         return 0;
1754                 }
1755         }
1756
1757         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1758                 scmd->result = DID_NO_CONNECT << 16;
1759                 scmd->scsi_done(scmd);
1760                 return 0;
1761         }
1762
1763         mr_device_priv_data = scmd->device->hostdata;
1764         if (!mr_device_priv_data) {
1765                 scmd->result = DID_NO_CONNECT << 16;
1766                 scmd->scsi_done(scmd);
1767                 return 0;
1768         }
1769
1770         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
1771                 return SCSI_MLQUEUE_HOST_BUSY;
1772
1773         if (mr_device_priv_data->tm_busy)
1774                 return SCSI_MLQUEUE_DEVICE_BUSY;
1775
1776
1777         scmd->result = 0;
1778
1779         if (MEGASAS_IS_LOGICAL(scmd->device) &&
1780             (scmd->device->id >= instance->fw_supported_vd_count ||
1781                 scmd->device->lun)) {
1782                 scmd->result = DID_BAD_TARGET << 16;
1783                 goto out_done;
1784         }
1785
1786         if ((scmd->cmnd[0] == SYNCHRONIZE_CACHE) &&
1787             MEGASAS_IS_LOGICAL(scmd->device) &&
1788             (!instance->fw_sync_cache_support)) {
1789                 scmd->result = DID_OK << 16;
1790                 goto out_done;
1791         }
1792
1793         return instance->instancet->build_and_issue_cmd(instance, scmd);
1794
1795  out_done:
1796         scmd->scsi_done(scmd);
1797         return 0;
1798 }
1799
1800 static struct megasas_instance *megasas_lookup_instance(u16 host_no)
1801 {
1802         int i;
1803
1804         for (i = 0; i < megasas_mgmt_info.max_index; i++) {
1805
1806                 if ((megasas_mgmt_info.instance[i]) &&
1807                     (megasas_mgmt_info.instance[i]->host->host_no == host_no))
1808                         return megasas_mgmt_info.instance[i];
1809         }
1810
1811         return NULL;
1812 }
1813
1814 /*
1815 * megasas_set_dynamic_target_properties -
1816 * Device property set by driver may not be static and it is required to be
1817 * updated after OCR
1818 *
1819 * set tm_capable.
1820 * set dma alignment (only for eedp protection enable vd).
1821 *
1822 * @sdev: OS provided scsi device
1823 *
1824 * Returns void
1825 */
1826 void megasas_set_dynamic_target_properties(struct scsi_device *sdev,
1827                                            bool is_target_prop)
1828 {
1829         u16 pd_index = 0, ld;
1830         u32 device_id;
1831         struct megasas_instance *instance;
1832         struct fusion_context *fusion;
1833         struct MR_PRIV_DEVICE *mr_device_priv_data;
1834         struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
1835         struct MR_LD_RAID *raid;
1836         struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
1837
1838         instance = megasas_lookup_instance(sdev->host->host_no);
1839         fusion = instance->ctrl_context;
1840         mr_device_priv_data = sdev->hostdata;
1841
1842         if (!fusion || !mr_device_priv_data)
1843                 return;
1844
1845         if (MEGASAS_IS_LOGICAL(sdev)) {
1846                 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL)
1847                                         + sdev->id;
1848                 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
1849                 ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
1850                 if (ld >= instance->fw_supported_vd_count)
1851                         return;
1852                 raid = MR_LdRaidGet(ld, local_map_ptr);
1853
1854                 if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER)
1855                 blk_queue_update_dma_alignment(sdev->request_queue, 0x7);
1856
1857                 mr_device_priv_data->is_tm_capable =
1858                         raid->capability.tmCapable;
1859         } else if (instance->use_seqnum_jbod_fp) {
1860                 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1861                         sdev->id;
1862                 pd_sync = (void *)fusion->pd_seq_sync
1863                                 [(instance->pd_seq_map_id - 1) & 1];
1864                 mr_device_priv_data->is_tm_capable =
1865                         pd_sync->seq[pd_index].capability.tmCapable;
1866         }
1867
1868         if (is_target_prop && instance->tgt_prop->reset_tmo) {
1869                 /*
1870                  * If FW provides a target reset timeout value, driver will use
1871                  * it. If not set, fallback to default values.
1872                  */
1873                 mr_device_priv_data->target_reset_tmo =
1874                         min_t(u8, instance->max_reset_tmo,
1875                               instance->tgt_prop->reset_tmo);
1876                 mr_device_priv_data->task_abort_tmo = instance->task_abort_tmo;
1877         } else {
1878                 mr_device_priv_data->target_reset_tmo =
1879                                                 MEGASAS_DEFAULT_TM_TIMEOUT;
1880                 mr_device_priv_data->task_abort_tmo =
1881                                                 MEGASAS_DEFAULT_TM_TIMEOUT;
1882         }
1883 }
1884
1885 /*
1886  * megasas_set_nvme_device_properties -
1887  * set nomerges=2
1888  * set virtual page boundary = 4K (current mr_nvme_pg_size is 4K).
1889  * set maximum io transfer = MDTS of NVME device provided by MR firmware.
1890  *
1891  * MR firmware provides value in KB. Caller of this function converts
1892  * kb into bytes.
1893  *
1894  * e.a MDTS=5 means 2^5 * nvme page size. (In case of 4K page size,
1895  * MR firmware provides value 128 as (32 * 4K) = 128K.
1896  *
1897  * @sdev:                               scsi device
1898  * @max_io_size:                                maximum io transfer size
1899  *
1900  */
1901 static inline void
1902 megasas_set_nvme_device_properties(struct scsi_device *sdev, u32 max_io_size)
1903 {
1904         struct megasas_instance *instance;
1905         u32 mr_nvme_pg_size;
1906
1907         instance = (struct megasas_instance *)sdev->host->hostdata;
1908         mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
1909                                 MR_DEFAULT_NVME_PAGE_SIZE);
1910
1911         blk_queue_max_hw_sectors(sdev->request_queue, (max_io_size / 512));
1912
1913         blk_queue_flag_set(QUEUE_FLAG_NOMERGES, sdev->request_queue);
1914         blk_queue_virt_boundary(sdev->request_queue, mr_nvme_pg_size - 1);
1915 }
1916
1917
1918 /*
1919  * megasas_set_static_target_properties -
1920  * Device property set by driver are static and it is not required to be
1921  * updated after OCR.
1922  *
1923  * set io timeout
1924  * set device queue depth
1925  * set nvme device properties. see - megasas_set_nvme_device_properties
1926  *
1927  * @sdev:                               scsi device
1928  * @is_target_prop                      true, if fw provided target properties.
1929  */
1930 static void megasas_set_static_target_properties(struct scsi_device *sdev,
1931                                                  bool is_target_prop)
1932 {
1933         u16     target_index = 0;
1934         u8 interface_type;
1935         u32 device_qd = MEGASAS_DEFAULT_CMD_PER_LUN;
1936         u32 max_io_size_kb = MR_DEFAULT_NVME_MDTS_KB;
1937         u32 tgt_device_qd;
1938         struct megasas_instance *instance;
1939         struct MR_PRIV_DEVICE *mr_device_priv_data;
1940
1941         instance = megasas_lookup_instance(sdev->host->host_no);
1942         mr_device_priv_data = sdev->hostdata;
1943         interface_type  = mr_device_priv_data->interface_type;
1944
1945         /*
1946          * The RAID firmware may require extended timeouts.
1947          */
1948         blk_queue_rq_timeout(sdev->request_queue, scmd_timeout * HZ);
1949
1950         target_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + sdev->id;
1951
1952         switch (interface_type) {
1953         case SAS_PD:
1954                 device_qd = MEGASAS_SAS_QD;
1955                 break;
1956         case SATA_PD:
1957                 device_qd = MEGASAS_SATA_QD;
1958                 break;
1959         case NVME_PD:
1960                 device_qd = MEGASAS_NVME_QD;
1961                 break;
1962         }
1963
1964         if (is_target_prop) {
1965                 tgt_device_qd = le32_to_cpu(instance->tgt_prop->device_qdepth);
1966                 if (tgt_device_qd &&
1967                     (tgt_device_qd <= instance->host->can_queue))
1968                         device_qd = tgt_device_qd;
1969
1970                 /* max_io_size_kb will be set to non zero for
1971                  * nvme based vd and syspd.
1972                  */
1973                 max_io_size_kb = le32_to_cpu(instance->tgt_prop->max_io_size_kb);
1974         }
1975
1976         if (instance->nvme_page_size && max_io_size_kb)
1977                 megasas_set_nvme_device_properties(sdev, (max_io_size_kb << 10));
1978
1979         scsi_change_queue_depth(sdev, device_qd);
1980
1981 }
1982
1983
1984 static int megasas_slave_configure(struct scsi_device *sdev)
1985 {
1986         u16 pd_index = 0;
1987         struct megasas_instance *instance;
1988         int ret_target_prop = DCMD_FAILED;
1989         bool is_target_prop = false;
1990
1991         instance = megasas_lookup_instance(sdev->host->host_no);
1992         if (instance->pd_list_not_supported) {
1993                 if (!MEGASAS_IS_LOGICAL(sdev) && sdev->type == TYPE_DISK) {
1994                         pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1995                                 sdev->id;
1996                         if (instance->pd_list[pd_index].driveState !=
1997                                 MR_PD_STATE_SYSTEM)
1998                                 return -ENXIO;
1999                 }
2000         }
2001
2002         mutex_lock(&instance->reset_mutex);
2003         /* Send DCMD to Firmware and cache the information */
2004         if ((instance->pd_info) && !MEGASAS_IS_LOGICAL(sdev))
2005                 megasas_get_pd_info(instance, sdev);
2006
2007         /* Some ventura firmware may not have instance->nvme_page_size set.
2008          * Do not send MR_DCMD_DRV_GET_TARGET_PROP
2009          */
2010         if ((instance->tgt_prop) && (instance->nvme_page_size))
2011                 ret_target_prop = megasas_get_target_prop(instance, sdev);
2012
2013         is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
2014         megasas_set_static_target_properties(sdev, is_target_prop);
2015
2016         /* This sdev property may change post OCR */
2017         megasas_set_dynamic_target_properties(sdev, is_target_prop);
2018
2019         mutex_unlock(&instance->reset_mutex);
2020
2021         return 0;
2022 }
2023
2024 static int megasas_slave_alloc(struct scsi_device *sdev)
2025 {
2026         u16 pd_index = 0;
2027         struct megasas_instance *instance ;
2028         struct MR_PRIV_DEVICE *mr_device_priv_data;
2029
2030         instance = megasas_lookup_instance(sdev->host->host_no);
2031         if (!MEGASAS_IS_LOGICAL(sdev)) {
2032                 /*
2033                  * Open the OS scan to the SYSTEM PD
2034                  */
2035                 pd_index =
2036                         (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
2037                         sdev->id;
2038                 if ((instance->pd_list_not_supported ||
2039                         instance->pd_list[pd_index].driveState ==
2040                         MR_PD_STATE_SYSTEM)) {
2041                         goto scan_target;
2042                 }
2043                 return -ENXIO;
2044         }
2045
2046 scan_target:
2047         mr_device_priv_data = kzalloc(sizeof(*mr_device_priv_data),
2048                                         GFP_KERNEL);
2049         if (!mr_device_priv_data)
2050                 return -ENOMEM;
2051         sdev->hostdata = mr_device_priv_data;
2052
2053         atomic_set(&mr_device_priv_data->r1_ldio_hint,
2054                    instance->r1_ldio_hint_default);
2055         return 0;
2056 }
2057
2058 static void megasas_slave_destroy(struct scsi_device *sdev)
2059 {
2060         kfree(sdev->hostdata);
2061         sdev->hostdata = NULL;
2062 }
2063
2064 /*
2065 * megasas_complete_outstanding_ioctls - Complete outstanding ioctls after a
2066 *                                       kill adapter
2067 * @instance:                            Adapter soft state
2068 *
2069 */
2070 static void megasas_complete_outstanding_ioctls(struct megasas_instance *instance)
2071 {
2072         int i;
2073         struct megasas_cmd *cmd_mfi;
2074         struct megasas_cmd_fusion *cmd_fusion;
2075         struct fusion_context *fusion = instance->ctrl_context;
2076
2077         /* Find all outstanding ioctls */
2078         if (fusion) {
2079                 for (i = 0; i < instance->max_fw_cmds; i++) {
2080                         cmd_fusion = fusion->cmd_list[i];
2081                         if (cmd_fusion->sync_cmd_idx != (u32)ULONG_MAX) {
2082                                 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
2083                                 if (cmd_mfi->sync_cmd &&
2084                                     (cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT)) {
2085                                         cmd_mfi->frame->hdr.cmd_status =
2086                                                         MFI_STAT_WRONG_STATE;
2087                                         megasas_complete_cmd(instance,
2088                                                              cmd_mfi, DID_OK);
2089                                 }
2090                         }
2091                 }
2092         } else {
2093                 for (i = 0; i < instance->max_fw_cmds; i++) {
2094                         cmd_mfi = instance->cmd_list[i];
2095                         if (cmd_mfi->sync_cmd && cmd_mfi->frame->hdr.cmd !=
2096                                 MFI_CMD_ABORT)
2097                                 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
2098                 }
2099         }
2100 }
2101
2102
2103 void megaraid_sas_kill_hba(struct megasas_instance *instance)
2104 {
2105         /* Set critical error to block I/O & ioctls in case caller didn't */
2106         atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2107         /* Wait 1 second to ensure IO or ioctls in build have posted */
2108         msleep(1000);
2109         if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2110                 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2111                 (instance->adapter_type != MFI_SERIES)) {
2112                 if (!instance->requestorId) {
2113                         writel(MFI_STOP_ADP, &instance->reg_set->doorbell);
2114                         /* Flush */
2115                         readl(&instance->reg_set->doorbell);
2116                 }
2117                 if (instance->requestorId && instance->peerIsPresent)
2118                         memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
2119         } else {
2120                 writel(MFI_STOP_ADP,
2121                         &instance->reg_set->inbound_doorbell);
2122         }
2123         /* Complete outstanding ioctls when adapter is killed */
2124         megasas_complete_outstanding_ioctls(instance);
2125 }
2126
2127  /**
2128   * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
2129   *                                     restored to max value
2130   * @instance:                  Adapter soft state
2131   *
2132   */
2133 void
2134 megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
2135 {
2136         unsigned long flags;
2137
2138         if (instance->flag & MEGASAS_FW_BUSY
2139             && time_after(jiffies, instance->last_time + 5 * HZ)
2140             && atomic_read(&instance->fw_outstanding) <
2141             instance->throttlequeuedepth + 1) {
2142
2143                 spin_lock_irqsave(instance->host->host_lock, flags);
2144                 instance->flag &= ~MEGASAS_FW_BUSY;
2145
2146                 instance->host->can_queue = instance->cur_can_queue;
2147                 spin_unlock_irqrestore(instance->host->host_lock, flags);
2148         }
2149 }
2150
2151 /**
2152  * megasas_complete_cmd_dpc      -      Returns FW's controller structure
2153  * @instance_addr:                      Address of adapter soft state
2154  *
2155  * Tasklet to complete cmds
2156  */
2157 static void megasas_complete_cmd_dpc(unsigned long instance_addr)
2158 {
2159         u32 producer;
2160         u32 consumer;
2161         u32 context;
2162         struct megasas_cmd *cmd;
2163         struct megasas_instance *instance =
2164                                 (struct megasas_instance *)instance_addr;
2165         unsigned long flags;
2166
2167         /* If we have already declared adapter dead, donot complete cmds */
2168         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
2169                 return;
2170
2171         spin_lock_irqsave(&instance->completion_lock, flags);
2172
2173         producer = le32_to_cpu(*instance->producer);
2174         consumer = le32_to_cpu(*instance->consumer);
2175
2176         while (consumer != producer) {
2177                 context = le32_to_cpu(instance->reply_queue[consumer]);
2178                 if (context >= instance->max_fw_cmds) {
2179                         dev_err(&instance->pdev->dev, "Unexpected context value %x\n",
2180                                 context);
2181                         BUG();
2182                 }
2183
2184                 cmd = instance->cmd_list[context];
2185
2186                 megasas_complete_cmd(instance, cmd, DID_OK);
2187
2188                 consumer++;
2189                 if (consumer == (instance->max_fw_cmds + 1)) {
2190                         consumer = 0;
2191                 }
2192         }
2193
2194         *instance->consumer = cpu_to_le32(producer);
2195
2196         spin_unlock_irqrestore(&instance->completion_lock, flags);
2197
2198         /*
2199          * Check if we can restore can_queue
2200          */
2201         megasas_check_and_restore_queue_depth(instance);
2202 }
2203
2204 static void megasas_sriov_heartbeat_handler(struct timer_list *t);
2205
2206 /**
2207  * megasas_start_timer - Initializes sriov heartbeat timer object
2208  * @instance:           Adapter soft state
2209  *
2210  */
2211 void megasas_start_timer(struct megasas_instance *instance)
2212 {
2213         struct timer_list *timer = &instance->sriov_heartbeat_timer;
2214
2215         timer_setup(timer, megasas_sriov_heartbeat_handler, 0);
2216         timer->expires = jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF;
2217         add_timer(timer);
2218 }
2219
2220 static void
2221 megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
2222
2223 static void
2224 process_fw_state_change_wq(struct work_struct *work);
2225
2226 void megasas_do_ocr(struct megasas_instance *instance)
2227 {
2228         if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
2229         (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
2230         (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
2231                 *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
2232         }
2233         instance->instancet->disable_intr(instance);
2234         atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
2235         instance->issuepend_done = 0;
2236
2237         atomic_set(&instance->fw_outstanding, 0);
2238         megasas_internal_reset_defer_cmds(instance);
2239         process_fw_state_change_wq(&instance->work_init);
2240 }
2241
2242 static int megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance,
2243                                             int initial)
2244 {
2245         struct megasas_cmd *cmd;
2246         struct megasas_dcmd_frame *dcmd;
2247         struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL;
2248         dma_addr_t new_affiliation_111_h;
2249         int ld, retval = 0;
2250         u8 thisVf;
2251
2252         cmd = megasas_get_cmd(instance);
2253
2254         if (!cmd) {
2255                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation_111:"
2256                        "Failed to get cmd for scsi%d\n",
2257                         instance->host->host_no);
2258                 return -ENOMEM;
2259         }
2260
2261         dcmd = &cmd->frame->dcmd;
2262
2263         if (!instance->vf_affiliation_111) {
2264                 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2265                        "affiliation for scsi%d\n", instance->host->host_no);
2266                 megasas_return_cmd(instance, cmd);
2267                 return -ENOMEM;
2268         }
2269
2270         if (initial)
2271                         memset(instance->vf_affiliation_111, 0,
2272                                sizeof(struct MR_LD_VF_AFFILIATION_111));
2273         else {
2274                 new_affiliation_111 =
2275                         dma_alloc_coherent(&instance->pdev->dev,
2276                                            sizeof(struct MR_LD_VF_AFFILIATION_111),
2277                                            &new_affiliation_111_h, GFP_KERNEL);
2278                 if (!new_affiliation_111) {
2279                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2280                                "memory for new affiliation for scsi%d\n",
2281                                instance->host->host_no);
2282                         megasas_return_cmd(instance, cmd);
2283                         return -ENOMEM;
2284                 }
2285         }
2286
2287         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2288
2289         dcmd->cmd = MFI_CMD_DCMD;
2290         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2291         dcmd->sge_count = 1;
2292         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2293         dcmd->timeout = 0;
2294         dcmd->pad_0 = 0;
2295         dcmd->data_xfer_len =
2296                 cpu_to_le32(sizeof(struct MR_LD_VF_AFFILIATION_111));
2297         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111);
2298
2299         if (initial)
2300                 dcmd->sgl.sge32[0].phys_addr =
2301                         cpu_to_le32(instance->vf_affiliation_111_h);
2302         else
2303                 dcmd->sgl.sge32[0].phys_addr =
2304                         cpu_to_le32(new_affiliation_111_h);
2305
2306         dcmd->sgl.sge32[0].length = cpu_to_le32(
2307                 sizeof(struct MR_LD_VF_AFFILIATION_111));
2308
2309         dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2310                "scsi%d\n", instance->host->host_no);
2311
2312         if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2313                 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2314                        " failed with status 0x%x for scsi%d\n",
2315                        dcmd->cmd_status, instance->host->host_no);
2316                 retval = 1; /* Do a scan if we couldn't get affiliation */
2317                 goto out;
2318         }
2319
2320         if (!initial) {
2321                 thisVf = new_affiliation_111->thisVf;
2322                 for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++)
2323                         if (instance->vf_affiliation_111->map[ld].policy[thisVf] !=
2324                             new_affiliation_111->map[ld].policy[thisVf]) {
2325                                 dev_warn(&instance->pdev->dev, "SR-IOV: "
2326                                        "Got new LD/VF affiliation for scsi%d\n",
2327                                        instance->host->host_no);
2328                                 memcpy(instance->vf_affiliation_111,
2329                                        new_affiliation_111,
2330                                        sizeof(struct MR_LD_VF_AFFILIATION_111));
2331                                 retval = 1;
2332                                 goto out;
2333                         }
2334         }
2335 out:
2336         if (new_affiliation_111) {
2337                 dma_free_coherent(&instance->pdev->dev,
2338                                     sizeof(struct MR_LD_VF_AFFILIATION_111),
2339                                     new_affiliation_111,
2340                                     new_affiliation_111_h);
2341         }
2342
2343         megasas_return_cmd(instance, cmd);
2344
2345         return retval;
2346 }
2347
2348 static int megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance,
2349                                             int initial)
2350 {
2351         struct megasas_cmd *cmd;
2352         struct megasas_dcmd_frame *dcmd;
2353         struct MR_LD_VF_AFFILIATION *new_affiliation = NULL;
2354         struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL;
2355         dma_addr_t new_affiliation_h;
2356         int i, j, retval = 0, found = 0, doscan = 0;
2357         u8 thisVf;
2358
2359         cmd = megasas_get_cmd(instance);
2360
2361         if (!cmd) {
2362                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation12: "
2363                        "Failed to get cmd for scsi%d\n",
2364                        instance->host->host_no);
2365                 return -ENOMEM;
2366         }
2367
2368         dcmd = &cmd->frame->dcmd;
2369
2370         if (!instance->vf_affiliation) {
2371                 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2372                        "affiliation for scsi%d\n", instance->host->host_no);
2373                 megasas_return_cmd(instance, cmd);
2374                 return -ENOMEM;
2375         }
2376
2377         if (initial)
2378                 memset(instance->vf_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
2379                        sizeof(struct MR_LD_VF_AFFILIATION));
2380         else {
2381                 new_affiliation =
2382                         dma_alloc_coherent(&instance->pdev->dev,
2383                                            (MAX_LOGICAL_DRIVES + 1) * sizeof(struct MR_LD_VF_AFFILIATION),
2384                                            &new_affiliation_h, GFP_KERNEL);
2385                 if (!new_affiliation) {
2386                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2387                                "memory for new affiliation for scsi%d\n",
2388                                instance->host->host_no);
2389                         megasas_return_cmd(instance, cmd);
2390                         return -ENOMEM;
2391                 }
2392         }
2393
2394         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2395
2396         dcmd->cmd = MFI_CMD_DCMD;
2397         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2398         dcmd->sge_count = 1;
2399         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2400         dcmd->timeout = 0;
2401         dcmd->pad_0 = 0;
2402         dcmd->data_xfer_len = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2403                 sizeof(struct MR_LD_VF_AFFILIATION));
2404         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS);
2405
2406         if (initial)
2407                 dcmd->sgl.sge32[0].phys_addr =
2408                         cpu_to_le32(instance->vf_affiliation_h);
2409         else
2410                 dcmd->sgl.sge32[0].phys_addr =
2411                         cpu_to_le32(new_affiliation_h);
2412
2413         dcmd->sgl.sge32[0].length = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2414                 sizeof(struct MR_LD_VF_AFFILIATION));
2415
2416         dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2417                "scsi%d\n", instance->host->host_no);
2418
2419
2420         if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2421                 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2422                        " failed with status 0x%x for scsi%d\n",
2423                        dcmd->cmd_status, instance->host->host_no);
2424                 retval = 1; /* Do a scan if we couldn't get affiliation */
2425                 goto out;
2426         }
2427
2428         if (!initial) {
2429                 if (!new_affiliation->ldCount) {
2430                         dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2431                                "affiliation for passive path for scsi%d\n",
2432                                instance->host->host_no);
2433                         retval = 1;
2434                         goto out;
2435                 }
2436                 newmap = new_affiliation->map;
2437                 savedmap = instance->vf_affiliation->map;
2438                 thisVf = new_affiliation->thisVf;
2439                 for (i = 0 ; i < new_affiliation->ldCount; i++) {
2440                         found = 0;
2441                         for (j = 0; j < instance->vf_affiliation->ldCount;
2442                              j++) {
2443                                 if (newmap->ref.targetId ==
2444                                     savedmap->ref.targetId) {
2445                                         found = 1;
2446                                         if (newmap->policy[thisVf] !=
2447                                             savedmap->policy[thisVf]) {
2448                                                 doscan = 1;
2449                                                 goto out;
2450                                         }
2451                                 }
2452                                 savedmap = (struct MR_LD_VF_MAP *)
2453                                         ((unsigned char *)savedmap +
2454                                          savedmap->size);
2455                         }
2456                         if (!found && newmap->policy[thisVf] !=
2457                             MR_LD_ACCESS_HIDDEN) {
2458                                 doscan = 1;
2459                                 goto out;
2460                         }
2461                         newmap = (struct MR_LD_VF_MAP *)
2462                                 ((unsigned char *)newmap + newmap->size);
2463                 }
2464
2465                 newmap = new_affiliation->map;
2466                 savedmap = instance->vf_affiliation->map;
2467
2468                 for (i = 0 ; i < instance->vf_affiliation->ldCount; i++) {
2469                         found = 0;
2470                         for (j = 0 ; j < new_affiliation->ldCount; j++) {
2471                                 if (savedmap->ref.targetId ==
2472                                     newmap->ref.targetId) {
2473                                         found = 1;
2474                                         if (savedmap->policy[thisVf] !=
2475                                             newmap->policy[thisVf]) {
2476                                                 doscan = 1;
2477                                                 goto out;
2478                                         }
2479                                 }
2480                                 newmap = (struct MR_LD_VF_MAP *)
2481                                         ((unsigned char *)newmap +
2482                                          newmap->size);
2483                         }
2484                         if (!found && savedmap->policy[thisVf] !=
2485                             MR_LD_ACCESS_HIDDEN) {
2486                                 doscan = 1;
2487                                 goto out;
2488                         }
2489                         savedmap = (struct MR_LD_VF_MAP *)
2490                                 ((unsigned char *)savedmap +
2491                                  savedmap->size);
2492                 }
2493         }
2494 out:
2495         if (doscan) {
2496                 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2497                        "affiliation for scsi%d\n", instance->host->host_no);
2498                 memcpy(instance->vf_affiliation, new_affiliation,
2499                        new_affiliation->size);
2500                 retval = 1;
2501         }
2502
2503         if (new_affiliation)
2504                 dma_free_coherent(&instance->pdev->dev,
2505                                     (MAX_LOGICAL_DRIVES + 1) *
2506                                     sizeof(struct MR_LD_VF_AFFILIATION),
2507                                     new_affiliation, new_affiliation_h);
2508         megasas_return_cmd(instance, cmd);
2509
2510         return retval;
2511 }
2512
2513 /* This function will get the current SR-IOV LD/VF affiliation */
2514 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
2515         int initial)
2516 {
2517         int retval;
2518
2519         if (instance->PlasmaFW111)
2520                 retval = megasas_get_ld_vf_affiliation_111(instance, initial);
2521         else
2522                 retval = megasas_get_ld_vf_affiliation_12(instance, initial);
2523         return retval;
2524 }
2525
2526 /* This function will tell FW to start the SR-IOV heartbeat */
2527 int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
2528                                          int initial)
2529 {
2530         struct megasas_cmd *cmd;
2531         struct megasas_dcmd_frame *dcmd;
2532         int retval = 0;
2533
2534         cmd = megasas_get_cmd(instance);
2535
2536         if (!cmd) {
2537                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_sriov_start_heartbeat: "
2538                        "Failed to get cmd for scsi%d\n",
2539                        instance->host->host_no);
2540                 return -ENOMEM;
2541         }
2542
2543         dcmd = &cmd->frame->dcmd;
2544
2545         if (initial) {
2546                 instance->hb_host_mem =
2547                         dma_alloc_coherent(&instance->pdev->dev,
2548                                            sizeof(struct MR_CTRL_HB_HOST_MEM),
2549                                            &instance->hb_host_mem_h,
2550                                            GFP_KERNEL);
2551                 if (!instance->hb_host_mem) {
2552                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate"
2553                                " memory for heartbeat host memory for scsi%d\n",
2554                                instance->host->host_no);
2555                         retval = -ENOMEM;
2556                         goto out;
2557                 }
2558         }
2559
2560         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2561
2562         dcmd->mbox.s[0] = cpu_to_le16(sizeof(struct MR_CTRL_HB_HOST_MEM));
2563         dcmd->cmd = MFI_CMD_DCMD;
2564         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2565         dcmd->sge_count = 1;
2566         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2567         dcmd->timeout = 0;
2568         dcmd->pad_0 = 0;
2569         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM));
2570         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC);
2571
2572         megasas_set_dma_settings(instance, dcmd, instance->hb_host_mem_h,
2573                                  sizeof(struct MR_CTRL_HB_HOST_MEM));
2574
2575         dev_warn(&instance->pdev->dev, "SR-IOV: Starting heartbeat for scsi%d\n",
2576                instance->host->host_no);
2577
2578         if ((instance->adapter_type != MFI_SERIES) &&
2579             !instance->mask_interrupts)
2580                 retval = megasas_issue_blocked_cmd(instance, cmd,
2581                         MEGASAS_ROUTINE_WAIT_TIME_VF);
2582         else
2583                 retval = megasas_issue_polled(instance, cmd);
2584
2585         if (retval) {
2586                 dev_warn(&instance->pdev->dev, "SR-IOV: MR_DCMD_CTRL_SHARED_HOST"
2587                         "_MEM_ALLOC DCMD %s for scsi%d\n",
2588                         (dcmd->cmd_status == MFI_STAT_INVALID_STATUS) ?
2589                         "timed out" : "failed", instance->host->host_no);
2590                 retval = 1;
2591         }
2592
2593 out:
2594         megasas_return_cmd(instance, cmd);
2595
2596         return retval;
2597 }
2598
2599 /* Handler for SR-IOV heartbeat */
2600 static void megasas_sriov_heartbeat_handler(struct timer_list *t)
2601 {
2602         struct megasas_instance *instance =
2603                 from_timer(instance, t, sriov_heartbeat_timer);
2604
2605         if (instance->hb_host_mem->HB.fwCounter !=
2606             instance->hb_host_mem->HB.driverCounter) {
2607                 instance->hb_host_mem->HB.driverCounter =
2608                         instance->hb_host_mem->HB.fwCounter;
2609                 mod_timer(&instance->sriov_heartbeat_timer,
2610                           jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
2611         } else {
2612                 dev_warn(&instance->pdev->dev, "SR-IOV: Heartbeat never "
2613                        "completed for scsi%d\n", instance->host->host_no);
2614                 schedule_work(&instance->work_init);
2615         }
2616 }
2617
2618 /**
2619  * megasas_wait_for_outstanding -       Wait for all outstanding cmds
2620  * @instance:                           Adapter soft state
2621  *
2622  * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to
2623  * complete all its outstanding commands. Returns error if one or more IOs
2624  * are pending after this time period. It also marks the controller dead.
2625  */
2626 static int megasas_wait_for_outstanding(struct megasas_instance *instance)
2627 {
2628         int i, sl, outstanding;
2629         u32 reset_index;
2630         u32 wait_time = MEGASAS_RESET_WAIT_TIME;
2631         unsigned long flags;
2632         struct list_head clist_local;
2633         struct megasas_cmd *reset_cmd;
2634         u32 fw_state;
2635
2636         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2637                 dev_info(&instance->pdev->dev, "%s:%d HBA is killed.\n",
2638                 __func__, __LINE__);
2639                 return FAILED;
2640         }
2641
2642         if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2643
2644                 INIT_LIST_HEAD(&clist_local);
2645                 spin_lock_irqsave(&instance->hba_lock, flags);
2646                 list_splice_init(&instance->internal_reset_pending_q,
2647                                 &clist_local);
2648                 spin_unlock_irqrestore(&instance->hba_lock, flags);
2649
2650                 dev_notice(&instance->pdev->dev, "HBA reset wait ...\n");
2651                 for (i = 0; i < wait_time; i++) {
2652                         msleep(1000);
2653                         if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL)
2654                                 break;
2655                 }
2656
2657                 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2658                         dev_notice(&instance->pdev->dev, "reset: Stopping HBA.\n");
2659                         atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2660                         return FAILED;
2661                 }
2662
2663                 reset_index = 0;
2664                 while (!list_empty(&clist_local)) {
2665                         reset_cmd = list_entry((&clist_local)->next,
2666                                                 struct megasas_cmd, list);
2667                         list_del_init(&reset_cmd->list);
2668                         if (reset_cmd->scmd) {
2669                                 reset_cmd->scmd->result = DID_REQUEUE << 16;
2670                                 dev_notice(&instance->pdev->dev, "%d:%p reset [%02x]\n",
2671                                         reset_index, reset_cmd,
2672                                         reset_cmd->scmd->cmnd[0]);
2673
2674                                 reset_cmd->scmd->scsi_done(reset_cmd->scmd);
2675                                 megasas_return_cmd(instance, reset_cmd);
2676                         } else if (reset_cmd->sync_cmd) {
2677                                 dev_notice(&instance->pdev->dev, "%p synch cmds"
2678                                                 "reset queue\n",
2679                                                 reset_cmd);
2680
2681                                 reset_cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
2682                                 instance->instancet->fire_cmd(instance,
2683                                                 reset_cmd->frame_phys_addr,
2684                                                 0, instance->reg_set);
2685                         } else {
2686                                 dev_notice(&instance->pdev->dev, "%p unexpected"
2687                                         "cmds lst\n",
2688                                         reset_cmd);
2689                         }
2690                         reset_index++;
2691                 }
2692
2693                 return SUCCESS;
2694         }
2695
2696         for (i = 0; i < resetwaittime; i++) {
2697                 outstanding = atomic_read(&instance->fw_outstanding);
2698
2699                 if (!outstanding)
2700                         break;
2701
2702                 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2703                         dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
2704                                "commands to complete\n",i,outstanding);
2705                         /*
2706                          * Call cmd completion routine. Cmd to be
2707                          * be completed directly without depending on isr.
2708                          */
2709                         megasas_complete_cmd_dpc((unsigned long)instance);
2710                 }
2711
2712                 msleep(1000);
2713         }
2714
2715         i = 0;
2716         outstanding = atomic_read(&instance->fw_outstanding);
2717         fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK;
2718
2719         if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2720                 goto no_outstanding;
2721
2722         if (instance->disableOnlineCtrlReset)
2723                 goto kill_hba_and_failed;
2724         do {
2725                 if ((fw_state == MFI_STATE_FAULT) || atomic_read(&instance->fw_outstanding)) {
2726                         dev_info(&instance->pdev->dev,
2727                                 "%s:%d waiting_for_outstanding: before issue OCR. FW state = 0x%x, outstanding 0x%x\n",
2728                                 __func__, __LINE__, fw_state, atomic_read(&instance->fw_outstanding));
2729                         if (i == 3)
2730                                 goto kill_hba_and_failed;
2731                         megasas_do_ocr(instance);
2732
2733                         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2734                                 dev_info(&instance->pdev->dev, "%s:%d OCR failed and HBA is killed.\n",
2735                                 __func__, __LINE__);
2736                                 return FAILED;
2737                         }
2738                         dev_info(&instance->pdev->dev, "%s:%d waiting_for_outstanding: after issue OCR.\n",
2739                                 __func__, __LINE__);
2740
2741                         for (sl = 0; sl < 10; sl++)
2742                                 msleep(500);
2743
2744                         outstanding = atomic_read(&instance->fw_outstanding);
2745
2746                         fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK;
2747                         if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2748                                 goto no_outstanding;
2749                 }
2750                 i++;
2751         } while (i <= 3);
2752
2753 no_outstanding:
2754
2755         dev_info(&instance->pdev->dev, "%s:%d no more pending commands remain after reset handling.\n",
2756                 __func__, __LINE__);
2757         return SUCCESS;
2758
2759 kill_hba_and_failed:
2760
2761         /* Reset not supported, kill adapter */
2762         dev_info(&instance->pdev->dev, "%s:%d killing adapter scsi%d"
2763                 " disableOnlineCtrlReset %d fw_outstanding %d \n",
2764                 __func__, __LINE__, instance->host->host_no, instance->disableOnlineCtrlReset,
2765                 atomic_read(&instance->fw_outstanding));
2766         megasas_dump_pending_frames(instance);
2767         megaraid_sas_kill_hba(instance);
2768
2769         return FAILED;
2770 }
2771
2772 /**
2773  * megasas_generic_reset -      Generic reset routine
2774  * @scmd:                       Mid-layer SCSI command
2775  *
2776  * This routine implements a generic reset handler for device, bus and host
2777  * reset requests. Device, bus and host specific reset handlers can use this
2778  * function after they do their specific tasks.
2779  */
2780 static int megasas_generic_reset(struct scsi_cmnd *scmd)
2781 {
2782         int ret_val;
2783         struct megasas_instance *instance;
2784
2785         instance = (struct megasas_instance *)scmd->device->host->hostdata;
2786
2787         scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n",
2788                  scmd->cmnd[0], scmd->retries);
2789
2790         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2791                 dev_err(&instance->pdev->dev, "cannot recover from previous reset failures\n");
2792                 return FAILED;
2793         }
2794
2795         ret_val = megasas_wait_for_outstanding(instance);
2796         if (ret_val == SUCCESS)
2797                 dev_notice(&instance->pdev->dev, "reset successful\n");
2798         else
2799                 dev_err(&instance->pdev->dev, "failed to do reset\n");
2800
2801         return ret_val;
2802 }
2803
2804 /**
2805  * megasas_reset_timer - quiesce the adapter if required
2806  * @scmd:               scsi cmnd
2807  *
2808  * Sets the FW busy flag and reduces the host->can_queue if the
2809  * cmd has not been completed within the timeout period.
2810  */
2811 static enum
2812 blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
2813 {
2814         struct megasas_instance *instance;
2815         unsigned long flags;
2816
2817         if (time_after(jiffies, scmd->jiffies_at_alloc +
2818                                 (scmd_timeout * 2) * HZ)) {
2819                 return BLK_EH_DONE;
2820         }
2821
2822         instance = (struct megasas_instance *)scmd->device->host->hostdata;
2823         if (!(instance->flag & MEGASAS_FW_BUSY)) {
2824                 /* FW is busy, throttle IO */
2825                 spin_lock_irqsave(instance->host->host_lock, flags);
2826
2827                 instance->host->can_queue = instance->throttlequeuedepth;
2828                 instance->last_time = jiffies;
2829                 instance->flag |= MEGASAS_FW_BUSY;
2830
2831                 spin_unlock_irqrestore(instance->host->host_lock, flags);
2832         }
2833         return BLK_EH_RESET_TIMER;
2834 }
2835
2836 /**
2837  * megasas_dump_frame - This function will dump MPT/MFI frame
2838  */
2839 static inline void
2840 megasas_dump_frame(void *mpi_request, int sz)
2841 {
2842         int i;
2843         __le32 *mfp = (__le32 *)mpi_request;
2844
2845         printk(KERN_INFO "IO request frame:\n\t");
2846         for (i = 0; i < sz / sizeof(__le32); i++) {
2847                 if (i && ((i % 8) == 0))
2848                         printk("\n\t");
2849                 printk("%08x ", le32_to_cpu(mfp[i]));
2850         }
2851         printk("\n");
2852 }
2853
2854 /**
2855  * megasas_reset_bus_host -     Bus & host reset handler entry point
2856  */
2857 static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
2858 {
2859         int ret;
2860         struct megasas_instance *instance;
2861
2862         instance = (struct megasas_instance *)scmd->device->host->hostdata;
2863
2864         scmd_printk(KERN_INFO, scmd,
2865                 "Controller reset is requested due to IO timeout\n"
2866                 "SCSI command pointer: (%p)\t SCSI host state: %d\t"
2867                 " SCSI host busy: %d\t FW outstanding: %d\n",
2868                 scmd, scmd->device->host->shost_state,
2869                 scsi_host_busy(scmd->device->host),
2870                 atomic_read(&instance->fw_outstanding));
2871
2872         /*
2873          * First wait for all commands to complete
2874          */
2875         if (instance->adapter_type == MFI_SERIES) {
2876                 ret = megasas_generic_reset(scmd);
2877         } else {
2878                 struct megasas_cmd_fusion *cmd;
2879                 cmd = (struct megasas_cmd_fusion *)scmd->SCp.ptr;
2880                 if (cmd)
2881                         megasas_dump_frame(cmd->io_request,
2882                                 MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE);
2883                 ret = megasas_reset_fusion(scmd->device->host,
2884                                 SCSIIO_TIMEOUT_OCR);
2885         }
2886
2887         return ret;
2888 }
2889
2890 /**
2891  * megasas_task_abort - Issues task abort request to firmware
2892  *                      (supported only for fusion adapters)
2893  * @scmd:               SCSI command pointer
2894  */
2895 static int megasas_task_abort(struct scsi_cmnd *scmd)
2896 {
2897         int ret;
2898         struct megasas_instance *instance;
2899
2900         instance = (struct megasas_instance *)scmd->device->host->hostdata;
2901
2902         if (instance->adapter_type != MFI_SERIES)
2903                 ret = megasas_task_abort_fusion(scmd);
2904         else {
2905                 sdev_printk(KERN_NOTICE, scmd->device, "TASK ABORT not supported\n");
2906                 ret = FAILED;
2907         }
2908
2909         return ret;
2910 }
2911
2912 /**
2913  * megasas_reset_target:  Issues target reset request to firmware
2914  *                        (supported only for fusion adapters)
2915  * @scmd:                 SCSI command pointer
2916  */
2917 static int megasas_reset_target(struct scsi_cmnd *scmd)
2918 {
2919         int ret;
2920         struct megasas_instance *instance;
2921
2922         instance = (struct megasas_instance *)scmd->device->host->hostdata;
2923
2924         if (instance->adapter_type != MFI_SERIES)
2925                 ret = megasas_reset_target_fusion(scmd);
2926         else {
2927                 sdev_printk(KERN_NOTICE, scmd->device, "TARGET RESET not supported\n");
2928                 ret = FAILED;
2929         }
2930
2931         return ret;
2932 }
2933
2934 /**
2935  * megasas_bios_param - Returns disk geometry for a disk
2936  * @sdev:               device handle
2937  * @bdev:               block device
2938  * @capacity:           drive capacity
2939  * @geom:               geometry parameters
2940  */
2941 static int
2942 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
2943                  sector_t capacity, int geom[])
2944 {
2945         int heads;
2946         int sectors;
2947         sector_t cylinders;
2948         unsigned long tmp;
2949
2950         /* Default heads (64) & sectors (32) */
2951         heads = 64;
2952         sectors = 32;
2953
2954         tmp = heads * sectors;
2955         cylinders = capacity;
2956
2957         sector_div(cylinders, tmp);
2958
2959         /*
2960          * Handle extended translation size for logical drives > 1Gb
2961          */
2962
2963         if (capacity >= 0x200000) {
2964                 heads = 255;
2965                 sectors = 63;
2966                 tmp = heads*sectors;
2967                 cylinders = capacity;
2968                 sector_div(cylinders, tmp);
2969         }
2970
2971         geom[0] = heads;
2972         geom[1] = sectors;
2973         geom[2] = cylinders;
2974
2975         return 0;
2976 }
2977
2978 static void megasas_aen_polling(struct work_struct *work);
2979
2980 /**
2981  * megasas_service_aen -        Processes an event notification
2982  * @instance:                   Adapter soft state
2983  * @cmd:                        AEN command completed by the ISR
2984  *
2985  * For AEN, driver sends a command down to FW that is held by the FW till an
2986  * event occurs. When an event of interest occurs, FW completes the command
2987  * that it was previously holding.
2988  *
2989  * This routines sends SIGIO signal to processes that have registered with the
2990  * driver for AEN.
2991  */
2992 static void
2993 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
2994 {
2995         unsigned long flags;
2996
2997         /*
2998          * Don't signal app if it is just an aborted previously registered aen
2999          */
3000         if ((!cmd->abort_aen) && (instance->unload == 0)) {
3001                 spin_lock_irqsave(&poll_aen_lock, flags);
3002                 megasas_poll_wait_aen = 1;
3003                 spin_unlock_irqrestore(&poll_aen_lock, flags);
3004                 wake_up(&megasas_poll_wait);
3005                 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
3006         }
3007         else
3008                 cmd->abort_aen = 0;
3009
3010         instance->aen_cmd = NULL;
3011
3012         megasas_return_cmd(instance, cmd);
3013
3014         if ((instance->unload == 0) &&
3015                 ((instance->issuepend_done == 1))) {
3016                 struct megasas_aen_event *ev;
3017
3018                 ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
3019                 if (!ev) {
3020                         dev_err(&instance->pdev->dev, "megasas_service_aen: out of memory\n");
3021                 } else {
3022                         ev->instance = instance;
3023                         instance->ev = ev;
3024                         INIT_DELAYED_WORK(&ev->hotplug_work,
3025                                           megasas_aen_polling);
3026                         schedule_delayed_work(&ev->hotplug_work, 0);
3027                 }
3028         }
3029 }
3030
3031 static ssize_t
3032 megasas_fw_crash_buffer_store(struct device *cdev,
3033         struct device_attribute *attr, const char *buf, size_t count)
3034 {
3035         struct Scsi_Host *shost = class_to_shost(cdev);
3036         struct megasas_instance *instance =
3037                 (struct megasas_instance *) shost->hostdata;
3038         int val = 0;
3039         unsigned long flags;
3040
3041         if (kstrtoint(buf, 0, &val) != 0)
3042                 return -EINVAL;
3043
3044         spin_lock_irqsave(&instance->crashdump_lock, flags);
3045         instance->fw_crash_buffer_offset = val;
3046         spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3047         return strlen(buf);
3048 }
3049
3050 static ssize_t
3051 megasas_fw_crash_buffer_show(struct device *cdev,
3052         struct device_attribute *attr, char *buf)
3053 {
3054         struct Scsi_Host *shost = class_to_shost(cdev);
3055         struct megasas_instance *instance =
3056                 (struct megasas_instance *) shost->hostdata;
3057         u32 size;
3058         unsigned long buff_addr;
3059         unsigned long dmachunk = CRASH_DMA_BUF_SIZE;
3060         unsigned long src_addr;
3061         unsigned long flags;
3062         u32 buff_offset;
3063
3064         spin_lock_irqsave(&instance->crashdump_lock, flags);
3065         buff_offset = instance->fw_crash_buffer_offset;
3066         if (!instance->crash_dump_buf &&
3067                 !((instance->fw_crash_state == AVAILABLE) ||
3068                 (instance->fw_crash_state == COPYING))) {
3069                 dev_err(&instance->pdev->dev,
3070                         "Firmware crash dump is not available\n");
3071                 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3072                 return -EINVAL;
3073         }
3074
3075         buff_addr = (unsigned long) buf;
3076
3077         if (buff_offset > (instance->fw_crash_buffer_size * dmachunk)) {
3078                 dev_err(&instance->pdev->dev,
3079                         "Firmware crash dump offset is out of range\n");
3080                 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3081                 return 0;
3082         }
3083
3084         size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset;
3085         size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size;
3086
3087         src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] +
3088                 (buff_offset % dmachunk);
3089         memcpy(buf, (void *)src_addr, size);
3090         spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3091
3092         return size;
3093 }
3094
3095 static ssize_t
3096 megasas_fw_crash_buffer_size_show(struct device *cdev,
3097         struct device_attribute *attr, char *buf)
3098 {
3099         struct Scsi_Host *shost = class_to_shost(cdev);
3100         struct megasas_instance *instance =
3101                 (struct megasas_instance *) shost->hostdata;
3102
3103         return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)
3104                 ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE);
3105 }
3106
3107 static ssize_t
3108 megasas_fw_crash_state_store(struct device *cdev,
3109         struct device_attribute *attr, const char *buf, size_t count)
3110 {
3111         struct Scsi_Host *shost = class_to_shost(cdev);
3112         struct megasas_instance *instance =
3113                 (struct megasas_instance *) shost->hostdata;
3114         int val = 0;
3115         unsigned long flags;
3116
3117         if (kstrtoint(buf, 0, &val) != 0)
3118                 return -EINVAL;
3119
3120         if ((val <= AVAILABLE || val > COPY_ERROR)) {
3121                 dev_err(&instance->pdev->dev, "application updates invalid "
3122                         "firmware crash state\n");
3123                 return -EINVAL;
3124         }
3125
3126         instance->fw_crash_state = val;
3127
3128         if ((val == COPIED) || (val == COPY_ERROR)) {
3129                 spin_lock_irqsave(&instance->crashdump_lock, flags);
3130                 megasas_free_host_crash_buffer(instance);
3131                 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3132                 if (val == COPY_ERROR)
3133                         dev_info(&instance->pdev->dev, "application failed to "
3134                                 "copy Firmware crash dump\n");
3135                 else
3136                         dev_info(&instance->pdev->dev, "Firmware crash dump "
3137                                 "copied successfully\n");
3138         }
3139         return strlen(buf);
3140 }
3141
3142 static ssize_t
3143 megasas_fw_crash_state_show(struct device *cdev,
3144         struct device_attribute *attr, char *buf)
3145 {
3146         struct Scsi_Host *shost = class_to_shost(cdev);
3147         struct megasas_instance *instance =
3148                 (struct megasas_instance *) shost->hostdata;
3149
3150         return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state);
3151 }
3152
3153 static ssize_t
3154 megasas_page_size_show(struct device *cdev,
3155         struct device_attribute *attr, char *buf)
3156 {
3157         return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1);
3158 }
3159
3160 static ssize_t
3161 megasas_ldio_outstanding_show(struct device *cdev, struct device_attribute *attr,
3162         char *buf)
3163 {
3164         struct Scsi_Host *shost = class_to_shost(cdev);
3165         struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3166
3167         return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->ldio_outstanding));
3168 }
3169
3170 static ssize_t
3171 megasas_fw_cmds_outstanding_show(struct device *cdev,
3172                                  struct device_attribute *attr, char *buf)
3173 {
3174         struct Scsi_Host *shost = class_to_shost(cdev);
3175         struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3176
3177         return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->fw_outstanding));
3178 }
3179
3180 static DEVICE_ATTR(fw_crash_buffer, S_IRUGO | S_IWUSR,
3181         megasas_fw_crash_buffer_show, megasas_fw_crash_buffer_store);
3182 static DEVICE_ATTR(fw_crash_buffer_size, S_IRUGO,
3183         megasas_fw_crash_buffer_size_show, NULL);
3184 static DEVICE_ATTR(fw_crash_state, S_IRUGO | S_IWUSR,
3185         megasas_fw_crash_state_show, megasas_fw_crash_state_store);
3186 static DEVICE_ATTR(page_size, S_IRUGO,
3187         megasas_page_size_show, NULL);
3188 static DEVICE_ATTR(ldio_outstanding, S_IRUGO,
3189         megasas_ldio_outstanding_show, NULL);
3190 static DEVICE_ATTR(fw_cmds_outstanding, S_IRUGO,
3191         megasas_fw_cmds_outstanding_show, NULL);
3192
3193 struct device_attribute *megaraid_host_attrs[] = {
3194         &dev_attr_fw_crash_buffer_size,
3195         &dev_attr_fw_crash_buffer,
3196         &dev_attr_fw_crash_state,
3197         &dev_attr_page_size,
3198         &dev_attr_ldio_outstanding,
3199         &dev_attr_fw_cmds_outstanding,
3200         NULL,
3201 };
3202
3203 /*
3204  * Scsi host template for megaraid_sas driver
3205  */
3206 static struct scsi_host_template megasas_template = {
3207
3208         .module = THIS_MODULE,
3209         .name = "Avago SAS based MegaRAID driver",
3210         .proc_name = "megaraid_sas",
3211         .slave_configure = megasas_slave_configure,
3212         .slave_alloc = megasas_slave_alloc,
3213         .slave_destroy = megasas_slave_destroy,
3214         .queuecommand = megasas_queue_command,
3215         .eh_target_reset_handler = megasas_reset_target,
3216         .eh_abort_handler = megasas_task_abort,
3217         .eh_host_reset_handler = megasas_reset_bus_host,
3218         .eh_timed_out = megasas_reset_timer,
3219         .shost_attrs = megaraid_host_attrs,
3220         .bios_param = megasas_bios_param,
3221         .change_queue_depth = scsi_change_queue_depth,
3222         .no_write_same = 1,
3223 };
3224
3225 /**
3226  * megasas_complete_int_cmd -   Completes an internal command
3227  * @instance:                   Adapter soft state
3228  * @cmd:                        Command to be completed
3229  *
3230  * The megasas_issue_blocked_cmd() function waits for a command to complete
3231  * after it issues a command. This function wakes up that waiting routine by
3232  * calling wake_up() on the wait queue.
3233  */
3234 static void
3235 megasas_complete_int_cmd(struct megasas_instance *instance,
3236                          struct megasas_cmd *cmd)
3237 {
3238         cmd->cmd_status_drv = cmd->frame->io.cmd_status;
3239         wake_up(&instance->int_cmd_wait_q);
3240 }
3241
3242 /**
3243  * megasas_complete_abort -     Completes aborting a command
3244  * @instance:                   Adapter soft state
3245  * @cmd:                        Cmd that was issued to abort another cmd
3246  *
3247  * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
3248  * after it issues an abort on a previously issued command. This function
3249  * wakes up all functions waiting on the same wait queue.
3250  */
3251 static void
3252 megasas_complete_abort(struct megasas_instance *instance,
3253                        struct megasas_cmd *cmd)
3254 {
3255         if (cmd->sync_cmd) {
3256                 cmd->sync_cmd = 0;
3257                 cmd->cmd_status_drv = 0;
3258                 wake_up(&instance->abort_cmd_wait_q);
3259         }
3260 }
3261
3262 /**
3263  * megasas_complete_cmd -       Completes a command
3264  * @instance:                   Adapter soft state
3265  * @cmd:                        Command to be completed
3266  * @alt_status:                 If non-zero, use this value as status to
3267  *                              SCSI mid-layer instead of the value returned
3268  *                              by the FW. This should be used if caller wants
3269  *                              an alternate status (as in the case of aborted
3270  *                              commands)
3271  */
3272 void
3273 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
3274                      u8 alt_status)
3275 {
3276         int exception = 0;
3277         struct megasas_header *hdr = &cmd->frame->hdr;
3278         unsigned long flags;
3279         struct fusion_context *fusion = instance->ctrl_context;
3280         u32 opcode, status;
3281
3282         /* flag for the retry reset */
3283         cmd->retry_for_fw_reset = 0;
3284
3285         if (cmd->scmd)
3286                 cmd->scmd->SCp.ptr = NULL;
3287
3288         switch (hdr->cmd) {
3289         case MFI_CMD_INVALID:
3290                 /* Some older 1068 controller FW may keep a pended
3291                    MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel
3292                    when booting the kdump kernel.  Ignore this command to
3293                    prevent a kernel panic on shutdown of the kdump kernel. */
3294                 dev_warn(&instance->pdev->dev, "MFI_CMD_INVALID command "
3295                        "completed\n");
3296                 dev_warn(&instance->pdev->dev, "If you have a controller "
3297                        "other than PERC5, please upgrade your firmware\n");
3298                 break;
3299         case MFI_CMD_PD_SCSI_IO:
3300         case MFI_CMD_LD_SCSI_IO:
3301
3302                 /*
3303                  * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
3304                  * issued either through an IO path or an IOCTL path. If it
3305                  * was via IOCTL, we will send it to internal completion.
3306                  */
3307                 if (cmd->sync_cmd) {
3308                         cmd->sync_cmd = 0;
3309                         megasas_complete_int_cmd(instance, cmd);
3310                         break;
3311                 }
3312                 /* fall through */
3313
3314         case MFI_CMD_LD_READ:
3315         case MFI_CMD_LD_WRITE:
3316
3317                 if (alt_status) {
3318                         cmd->scmd->result = alt_status << 16;
3319                         exception = 1;
3320                 }
3321
3322                 if (exception) {
3323
3324                         atomic_dec(&instance->fw_outstanding);
3325
3326                         scsi_dma_unmap(cmd->scmd);
3327                         cmd->scmd->scsi_done(cmd->scmd);
3328                         megasas_return_cmd(instance, cmd);
3329
3330                         break;
3331                 }
3332
3333                 switch (hdr->cmd_status) {
3334
3335                 case MFI_STAT_OK:
3336                         cmd->scmd->result = DID_OK << 16;
3337                         break;
3338
3339                 case MFI_STAT_SCSI_IO_FAILED:
3340                 case MFI_STAT_LD_INIT_IN_PROGRESS:
3341                         cmd->scmd->result =
3342                             (DID_ERROR << 16) | hdr->scsi_status;
3343                         break;
3344
3345                 case MFI_STAT_SCSI_DONE_WITH_ERROR:
3346
3347                         cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
3348
3349                         if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
3350                                 memset(cmd->scmd->sense_buffer, 0,
3351                                        SCSI_SENSE_BUFFERSIZE);
3352                                 memcpy(cmd->scmd->sense_buffer, cmd->sense,
3353                                        hdr->sense_len);
3354
3355                                 cmd->scmd->result |= DRIVER_SENSE << 24;
3356                         }
3357
3358                         break;
3359
3360                 case MFI_STAT_LD_OFFLINE:
3361                 case MFI_STAT_DEVICE_NOT_FOUND:
3362                         cmd->scmd->result = DID_BAD_TARGET << 16;
3363                         break;
3364
3365                 default:
3366                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "MFI FW status %#x\n",
3367                                hdr->cmd_status);
3368                         cmd->scmd->result = DID_ERROR << 16;
3369                         break;
3370                 }
3371
3372                 atomic_dec(&instance->fw_outstanding);
3373
3374                 scsi_dma_unmap(cmd->scmd);
3375                 cmd->scmd->scsi_done(cmd->scmd);
3376                 megasas_return_cmd(instance, cmd);
3377
3378                 break;
3379
3380         case MFI_CMD_SMP:
3381         case MFI_CMD_STP:
3382         case MFI_CMD_NVME:
3383                 megasas_complete_int_cmd(instance, cmd);
3384                 break;
3385
3386         case MFI_CMD_DCMD:
3387                 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
3388                 /* Check for LD map update */
3389                 if ((opcode == MR_DCMD_LD_MAP_GET_INFO)
3390                         && (cmd->frame->dcmd.mbox.b[1] == 1)) {
3391                         fusion->fast_path_io = 0;
3392                         spin_lock_irqsave(instance->host->host_lock, flags);
3393                         status = cmd->frame->hdr.cmd_status;
3394                         instance->map_update_cmd = NULL;
3395                         if (status != MFI_STAT_OK) {
3396                                 if (status != MFI_STAT_NOT_FOUND)
3397                                         dev_warn(&instance->pdev->dev, "map syncfailed, status = 0x%x\n",
3398                                                cmd->frame->hdr.cmd_status);
3399                                 else {
3400                                         megasas_return_cmd(instance, cmd);
3401                                         spin_unlock_irqrestore(
3402                                                 instance->host->host_lock,
3403                                                 flags);
3404                                         break;
3405                                 }
3406                         }
3407
3408                         megasas_return_cmd(instance, cmd);
3409
3410                         /*
3411                          * Set fast path IO to ZERO.
3412                          * Validate Map will set proper value.
3413                          * Meanwhile all IOs will go as LD IO.
3414                          */
3415                         if (status == MFI_STAT_OK &&
3416                             (MR_ValidateMapInfo(instance, (instance->map_id + 1)))) {
3417                                 instance->map_id++;
3418                                 fusion->fast_path_io = 1;
3419                         } else {
3420                                 fusion->fast_path_io = 0;
3421                         }
3422
3423                         megasas_sync_map_info(instance);
3424                         spin_unlock_irqrestore(instance->host->host_lock,
3425                                                flags);
3426                         break;
3427                 }
3428                 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
3429                     opcode == MR_DCMD_CTRL_EVENT_GET) {
3430                         spin_lock_irqsave(&poll_aen_lock, flags);
3431                         megasas_poll_wait_aen = 0;
3432                         spin_unlock_irqrestore(&poll_aen_lock, flags);
3433                 }
3434
3435                 /* FW has an updated PD sequence */
3436                 if ((opcode == MR_DCMD_SYSTEM_PD_MAP_GET_INFO) &&
3437                         (cmd->frame->dcmd.mbox.b[0] == 1)) {
3438
3439                         spin_lock_irqsave(instance->host->host_lock, flags);
3440                         status = cmd->frame->hdr.cmd_status;
3441                         instance->jbod_seq_cmd = NULL;
3442                         megasas_return_cmd(instance, cmd);
3443
3444                         if (status == MFI_STAT_OK) {
3445                                 instance->pd_seq_map_id++;
3446                                 /* Re-register a pd sync seq num cmd */
3447                                 if (megasas_sync_pd_seq_num(instance, true))
3448                                         instance->use_seqnum_jbod_fp = false;
3449                         } else
3450                                 instance->use_seqnum_jbod_fp = false;
3451
3452                         spin_unlock_irqrestore(instance->host->host_lock, flags);
3453                         break;
3454                 }
3455
3456                 /*
3457                  * See if got an event notification
3458                  */
3459                 if (opcode == MR_DCMD_CTRL_EVENT_WAIT)
3460                         megasas_service_aen(instance, cmd);
3461                 else
3462                         megasas_complete_int_cmd(instance, cmd);
3463
3464                 break;
3465
3466         case MFI_CMD_ABORT:
3467                 /*
3468                  * Cmd issued to abort another cmd returned
3469                  */
3470                 megasas_complete_abort(instance, cmd);
3471                 break;
3472
3473         default:
3474                 dev_info(&instance->pdev->dev, "Unknown command completed! [0x%X]\n",
3475                        hdr->cmd);
3476                 megasas_complete_int_cmd(instance, cmd);
3477                 break;
3478         }
3479 }
3480
3481 /**
3482  * megasas_issue_pending_cmds_again -   issue all pending cmds
3483  *                                      in FW again because of the fw reset
3484  * @instance:                           Adapter soft state
3485  */
3486 static inline void
3487 megasas_issue_pending_cmds_again(struct megasas_instance *instance)
3488 {
3489         struct megasas_cmd *cmd;
3490         struct list_head clist_local;
3491         union megasas_evt_class_locale class_locale;
3492         unsigned long flags;
3493         u32 seq_num;
3494
3495         INIT_LIST_HEAD(&clist_local);
3496         spin_lock_irqsave(&instance->hba_lock, flags);
3497         list_splice_init(&instance->internal_reset_pending_q, &clist_local);
3498         spin_unlock_irqrestore(&instance->hba_lock, flags);
3499
3500         while (!list_empty(&clist_local)) {
3501                 cmd = list_entry((&clist_local)->next,
3502                                         struct megasas_cmd, list);
3503                 list_del_init(&cmd->list);
3504
3505                 if (cmd->sync_cmd || cmd->scmd) {
3506                         dev_notice(&instance->pdev->dev, "command %p, %p:%d"
3507                                 "detected to be pending while HBA reset\n",
3508                                         cmd, cmd->scmd, cmd->sync_cmd);
3509
3510                         cmd->retry_for_fw_reset++;
3511
3512                         if (cmd->retry_for_fw_reset == 3) {
3513                                 dev_notice(&instance->pdev->dev, "cmd %p, %p:%d"
3514                                         "was tried multiple times during reset."
3515                                         "Shutting down the HBA\n",
3516                                         cmd, cmd->scmd, cmd->sync_cmd);
3517                                 instance->instancet->disable_intr(instance);
3518                                 atomic_set(&instance->fw_reset_no_pci_access, 1);
3519                                 megaraid_sas_kill_hba(instance);
3520                                 return;
3521                         }
3522                 }
3523
3524                 if (cmd->sync_cmd == 1) {
3525                         if (cmd->scmd) {
3526                                 dev_notice(&instance->pdev->dev, "unexpected"
3527                                         "cmd attached to internal command!\n");
3528                         }
3529                         dev_notice(&instance->pdev->dev, "%p synchronous cmd"
3530                                                 "on the internal reset queue,"
3531                                                 "issue it again.\n", cmd);
3532                         cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
3533                         instance->instancet->fire_cmd(instance,
3534                                                         cmd->frame_phys_addr,
3535                                                         0, instance->reg_set);
3536                 } else if (cmd->scmd) {
3537                         dev_notice(&instance->pdev->dev, "%p scsi cmd [%02x]"
3538                         "detected on the internal queue, issue again.\n",
3539                         cmd, cmd->scmd->cmnd[0]);
3540
3541                         atomic_inc(&instance->fw_outstanding);
3542                         instance->instancet->fire_cmd(instance,
3543                                         cmd->frame_phys_addr,
3544                                         cmd->frame_count-1, instance->reg_set);
3545                 } else {
3546                         dev_notice(&instance->pdev->dev, "%p unexpected cmd on the"
3547                                 "internal reset defer list while re-issue!!\n",
3548                                 cmd);
3549                 }
3550         }
3551
3552         if (instance->aen_cmd) {
3553                 dev_notice(&instance->pdev->dev, "aen_cmd in def process\n");
3554                 megasas_return_cmd(instance, instance->aen_cmd);
3555
3556                 instance->aen_cmd = NULL;
3557         }
3558
3559         /*
3560          * Initiate AEN (Asynchronous Event Notification)
3561          */
3562         seq_num = instance->last_seq_num;
3563         class_locale.members.reserved = 0;
3564         class_locale.members.locale = MR_EVT_LOCALE_ALL;
3565         class_locale.members.class = MR_EVT_CLASS_DEBUG;
3566
3567         megasas_register_aen(instance, seq_num, class_locale.word);
3568 }
3569
3570 /**
3571  * Move the internal reset pending commands to a deferred queue.
3572  *
3573  * We move the commands pending at internal reset time to a
3574  * pending queue. This queue would be flushed after successful
3575  * completion of the internal reset sequence. if the internal reset
3576  * did not complete in time, the kernel reset handler would flush
3577  * these commands.
3578  **/
3579 static void
3580 megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
3581 {
3582         struct megasas_cmd *cmd;
3583         int i;
3584         u16 max_cmd = instance->max_fw_cmds;
3585         u32 defer_index;
3586         unsigned long flags;
3587
3588         defer_index = 0;
3589         spin_lock_irqsave(&instance->mfi_pool_lock, flags);
3590         for (i = 0; i < max_cmd; i++) {
3591                 cmd = instance->cmd_list[i];
3592                 if (cmd->sync_cmd == 1 || cmd->scmd) {
3593                         dev_notice(&instance->pdev->dev, "moving cmd[%d]:%p:%d:%p"
3594                                         "on the defer queue as internal\n",
3595                                 defer_index, cmd, cmd->sync_cmd, cmd->scmd);
3596
3597                         if (!list_empty(&cmd->list)) {
3598                                 dev_notice(&instance->pdev->dev, "ERROR while"
3599                                         " moving this cmd:%p, %d %p, it was"
3600                                         "discovered on some list?\n",
3601                                         cmd, cmd->sync_cmd, cmd->scmd);
3602
3603                                 list_del_init(&cmd->list);
3604                         }
3605                         defer_index++;
3606                         list_add_tail(&cmd->list,
3607                                 &instance->internal_reset_pending_q);
3608                 }
3609         }
3610         spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
3611 }
3612
3613
3614 static void
3615 process_fw_state_change_wq(struct work_struct *work)
3616 {
3617         struct megasas_instance *instance =
3618                 container_of(work, struct megasas_instance, work_init);
3619         u32 wait;
3620         unsigned long flags;
3621
3622     if (atomic_read(&instance->adprecovery) != MEGASAS_ADPRESET_SM_INFAULT) {
3623                 dev_notice(&instance->pdev->dev, "error, recovery st %x\n",
3624                                 atomic_read(&instance->adprecovery));
3625                 return ;
3626         }
3627
3628         if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
3629                 dev_notice(&instance->pdev->dev, "FW detected to be in fault"
3630                                         "state, restarting it...\n");
3631
3632                 instance->instancet->disable_intr(instance);
3633                 atomic_set(&instance->fw_outstanding, 0);
3634
3635                 atomic_set(&instance->fw_reset_no_pci_access, 1);
3636                 instance->instancet->adp_reset(instance, instance->reg_set);
3637                 atomic_set(&instance->fw_reset_no_pci_access, 0);
3638
3639                 dev_notice(&instance->pdev->dev, "FW restarted successfully,"
3640                                         "initiating next stage...\n");
3641
3642                 dev_notice(&instance->pdev->dev, "HBA recovery state machine,"
3643                                         "state 2 starting...\n");
3644
3645                 /* waiting for about 20 second before start the second init */
3646                 for (wait = 0; wait < 30; wait++) {
3647                         msleep(1000);
3648                 }
3649
3650                 if (megasas_transition_to_ready(instance, 1)) {
3651                         dev_notice(&instance->pdev->dev, "adapter not ready\n");
3652
3653                         atomic_set(&instance->fw_reset_no_pci_access, 1);
3654                         megaraid_sas_kill_hba(instance);
3655                         return ;
3656                 }
3657
3658                 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
3659                         (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
3660                         (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
3661                         ) {
3662                         *instance->consumer = *instance->producer;
3663                 } else {
3664                         *instance->consumer = 0;
3665                         *instance->producer = 0;
3666                 }
3667
3668                 megasas_issue_init_mfi(instance);
3669
3670                 spin_lock_irqsave(&instance->hba_lock, flags);
3671                 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
3672                 spin_unlock_irqrestore(&instance->hba_lock, flags);
3673                 instance->instancet->enable_intr(instance);
3674
3675                 megasas_issue_pending_cmds_again(instance);
3676                 instance->issuepend_done = 1;
3677         }
3678 }
3679
3680 /**
3681  * megasas_deplete_reply_queue -        Processes all completed commands
3682  * @instance:                           Adapter soft state
3683  * @alt_status:                         Alternate status to be returned to
3684  *                                      SCSI mid-layer instead of the status
3685  *                                      returned by the FW
3686  * Note: this must be called with hba lock held
3687  */
3688 static int
3689 megasas_deplete_reply_queue(struct megasas_instance *instance,
3690                                         u8 alt_status)
3691 {
3692         u32 mfiStatus;
3693         u32 fw_state;
3694
3695         if ((mfiStatus = instance->instancet->check_reset(instance,
3696                                         instance->reg_set)) == 1) {
3697                 return IRQ_HANDLED;
3698         }
3699
3700         mfiStatus = instance->instancet->clear_intr(instance);
3701         if (mfiStatus == 0) {
3702                 /* Hardware may not set outbound_intr_status in MSI-X mode */
3703                 if (!instance->msix_vectors)
3704                         return IRQ_NONE;
3705         }
3706
3707         instance->mfiStatus = mfiStatus;
3708
3709         if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
3710                 fw_state = instance->instancet->read_fw_status_reg(
3711                                 instance) & MFI_STATE_MASK;
3712
3713                 if (fw_state != MFI_STATE_FAULT) {
3714                         dev_notice(&instance->pdev->dev, "fw state:%x\n",
3715                                                 fw_state);
3716                 }
3717
3718                 if ((fw_state == MFI_STATE_FAULT) &&
3719                                 (instance->disableOnlineCtrlReset == 0)) {
3720                         dev_notice(&instance->pdev->dev, "wait adp restart\n");
3721
3722                         if ((instance->pdev->device ==
3723                                         PCI_DEVICE_ID_LSI_SAS1064R) ||
3724                                 (instance->pdev->device ==
3725                                         PCI_DEVICE_ID_DELL_PERC5) ||
3726                                 (instance->pdev->device ==
3727                                         PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
3728
3729                                 *instance->consumer =
3730                                         cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
3731                         }
3732
3733
3734                         instance->instancet->disable_intr(instance);
3735                         atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
3736                         instance->issuepend_done = 0;
3737
3738                         atomic_set(&instance->fw_outstanding, 0);
3739                         megasas_internal_reset_defer_cmds(instance);
3740
3741                         dev_notice(&instance->pdev->dev, "fwState=%x, stage:%d\n",
3742                                         fw_state, atomic_read(&instance->adprecovery));
3743
3744                         schedule_work(&instance->work_init);
3745                         return IRQ_HANDLED;
3746
3747                 } else {
3748                         dev_notice(&instance->pdev->dev, "fwstate:%x, dis_OCR=%x\n",
3749                                 fw_state, instance->disableOnlineCtrlReset);
3750                 }
3751         }
3752
3753         tasklet_schedule(&instance->isr_tasklet);
3754         return IRQ_HANDLED;
3755 }
3756 /**
3757  * megasas_isr - isr entry point
3758  */
3759 static irqreturn_t megasas_isr(int irq, void *devp)
3760 {
3761         struct megasas_irq_context *irq_context = devp;
3762         struct megasas_instance *instance = irq_context->instance;
3763         unsigned long flags;
3764         irqreturn_t rc;
3765
3766         if (atomic_read(&instance->fw_reset_no_pci_access))
3767                 return IRQ_HANDLED;
3768
3769         spin_lock_irqsave(&instance->hba_lock, flags);
3770         rc = megasas_deplete_reply_queue(instance, DID_OK);
3771         spin_unlock_irqrestore(&instance->hba_lock, flags);
3772
3773         return rc;
3774 }
3775
3776 /**
3777  * megasas_transition_to_ready -        Move the FW to READY state
3778  * @instance:                           Adapter soft state
3779  *
3780  * During the initialization, FW passes can potentially be in any one of
3781  * several possible states. If the FW in operational, waiting-for-handshake
3782  * states, driver must take steps to bring it to ready state. Otherwise, it
3783  * has to wait for the ready state.
3784  */
3785 int
3786 megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
3787 {
3788         int i;
3789         u8 max_wait;
3790         u32 fw_state;
3791         u32 cur_state;
3792         u32 abs_state, curr_abs_state;
3793
3794         abs_state = instance->instancet->read_fw_status_reg(instance);
3795         fw_state = abs_state & MFI_STATE_MASK;
3796
3797         if (fw_state != MFI_STATE_READY)
3798                 dev_info(&instance->pdev->dev, "Waiting for FW to come to ready"
3799                        " state\n");
3800
3801         while (fw_state != MFI_STATE_READY) {
3802
3803                 switch (fw_state) {
3804
3805                 case MFI_STATE_FAULT:
3806                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW in FAULT state!!\n");
3807                         if (ocr) {
3808                                 max_wait = MEGASAS_RESET_WAIT_TIME;
3809                                 cur_state = MFI_STATE_FAULT;
3810                                 break;
3811                         } else
3812                                 return -ENODEV;
3813
3814                 case MFI_STATE_WAIT_HANDSHAKE:
3815                         /*
3816                          * Set the CLR bit in inbound doorbell
3817                          */
3818                         if ((instance->pdev->device ==
3819                                 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3820                                 (instance->pdev->device ==
3821                                  PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3822                                 (instance->adapter_type != MFI_SERIES))
3823                                 writel(
3824                                   MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
3825                                   &instance->reg_set->doorbell);
3826                         else
3827                                 writel(
3828                                     MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
3829                                         &instance->reg_set->inbound_doorbell);
3830
3831                         max_wait = MEGASAS_RESET_WAIT_TIME;
3832                         cur_state = MFI_STATE_WAIT_HANDSHAKE;
3833                         break;
3834
3835                 case MFI_STATE_BOOT_MESSAGE_PENDING:
3836                         if ((instance->pdev->device ==
3837                              PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3838                                 (instance->pdev->device ==
3839                                  PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3840                                 (instance->adapter_type != MFI_SERIES))
3841                                 writel(MFI_INIT_HOTPLUG,
3842                                        &instance->reg_set->doorbell);
3843                         else
3844                                 writel(MFI_INIT_HOTPLUG,
3845                                         &instance->reg_set->inbound_doorbell);
3846
3847                         max_wait = MEGASAS_RESET_WAIT_TIME;
3848                         cur_state = MFI_STATE_BOOT_MESSAGE_PENDING;
3849                         break;
3850
3851                 case MFI_STATE_OPERATIONAL:
3852                         /*
3853                          * Bring it to READY state; assuming max wait 10 secs
3854                          */
3855                         instance->instancet->disable_intr(instance);
3856                         if ((instance->pdev->device ==
3857                                 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3858                                 (instance->pdev->device ==
3859                                 PCI_DEVICE_ID_LSI_SAS0071SKINNY)  ||
3860                                 (instance->adapter_type != MFI_SERIES)) {
3861                                 writel(MFI_RESET_FLAGS,
3862                                         &instance->reg_set->doorbell);
3863
3864                                 if (instance->adapter_type != MFI_SERIES) {
3865                                         for (i = 0; i < (10 * 1000); i += 20) {
3866                                                 if (megasas_readl(
3867                                                             instance,
3868                                                             &instance->
3869                                                             reg_set->
3870                                                             doorbell) & 1)
3871                                                         msleep(20);
3872                                                 else
3873                                                         break;
3874                                         }
3875                                 }
3876                         } else
3877                                 writel(MFI_RESET_FLAGS,
3878                                         &instance->reg_set->inbound_doorbell);
3879
3880                         max_wait = MEGASAS_RESET_WAIT_TIME;
3881                         cur_state = MFI_STATE_OPERATIONAL;
3882                         break;
3883
3884                 case MFI_STATE_UNDEFINED:
3885                         /*
3886                          * This state should not last for more than 2 seconds
3887                          */
3888                         max_wait = MEGASAS_RESET_WAIT_TIME;
3889                         cur_state = MFI_STATE_UNDEFINED;
3890                         break;
3891
3892                 case MFI_STATE_BB_INIT:
3893                         max_wait = MEGASAS_RESET_WAIT_TIME;
3894                         cur_state = MFI_STATE_BB_INIT;
3895                         break;
3896
3897                 case MFI_STATE_FW_INIT:
3898                         max_wait = MEGASAS_RESET_WAIT_TIME;
3899                         cur_state = MFI_STATE_FW_INIT;
3900                         break;
3901
3902                 case MFI_STATE_FW_INIT_2:
3903                         max_wait = MEGASAS_RESET_WAIT_TIME;
3904                         cur_state = MFI_STATE_FW_INIT_2;
3905                         break;
3906
3907                 case MFI_STATE_DEVICE_SCAN:
3908                         max_wait = MEGASAS_RESET_WAIT_TIME;
3909                         cur_state = MFI_STATE_DEVICE_SCAN;
3910                         break;
3911
3912                 case MFI_STATE_FLUSH_CACHE:
3913                         max_wait = MEGASAS_RESET_WAIT_TIME;
3914                         cur_state = MFI_STATE_FLUSH_CACHE;
3915                         break;
3916
3917                 default:
3918                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "Unknown state 0x%x\n",
3919                                fw_state);
3920                         return -ENODEV;
3921                 }
3922
3923                 /*
3924                  * The cur_state should not last for more than max_wait secs
3925                  */
3926                 for (i = 0; i < max_wait * 50; i++) {
3927                         curr_abs_state = instance->instancet->
3928                                 read_fw_status_reg(instance);
3929
3930                         if (abs_state == curr_abs_state) {
3931                                 msleep(20);
3932                         } else
3933                                 break;
3934                 }
3935
3936                 /*
3937                  * Return error if fw_state hasn't changed after max_wait
3938                  */
3939                 if (curr_abs_state == abs_state) {
3940                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW state [%d] hasn't changed "
3941                                "in %d secs\n", fw_state, max_wait);
3942                         return -ENODEV;
3943                 }
3944
3945                 abs_state = curr_abs_state;
3946                 fw_state = curr_abs_state & MFI_STATE_MASK;
3947         }
3948         dev_info(&instance->pdev->dev, "FW now in Ready state\n");
3949
3950         return 0;
3951 }
3952
3953 /**
3954  * megasas_teardown_frame_pool -        Destroy the cmd frame DMA pool
3955  * @instance:                           Adapter soft state
3956  */
3957 static void megasas_teardown_frame_pool(struct megasas_instance *instance)
3958 {
3959         int i;
3960         u16 max_cmd = instance->max_mfi_cmds;
3961         struct megasas_cmd *cmd;
3962
3963         if (!instance->frame_dma_pool)
3964                 return;
3965
3966         /*
3967          * Return all frames to pool
3968          */
3969         for (i = 0; i < max_cmd; i++) {
3970
3971                 cmd = instance->cmd_list[i];
3972
3973                 if (cmd->frame)
3974                         dma_pool_free(instance->frame_dma_pool, cmd->frame,
3975                                       cmd->frame_phys_addr);
3976
3977                 if (cmd->sense)
3978                         dma_pool_free(instance->sense_dma_pool, cmd->sense,
3979                                       cmd->sense_phys_addr);
3980         }
3981
3982         /*
3983          * Now destroy the pool itself
3984          */
3985         dma_pool_destroy(instance->frame_dma_pool);
3986         dma_pool_destroy(instance->sense_dma_pool);
3987
3988         instance->frame_dma_pool = NULL;
3989         instance->sense_dma_pool = NULL;
3990 }
3991
3992 /**
3993  * megasas_create_frame_pool -  Creates DMA pool for cmd frames
3994  * @instance:                   Adapter soft state
3995  *
3996  * Each command packet has an embedded DMA memory buffer that is used for
3997  * filling MFI frame and the SG list that immediately follows the frame. This
3998  * function creates those DMA memory buffers for each command packet by using
3999  * PCI pool facility.
4000  */
4001 static int megasas_create_frame_pool(struct megasas_instance *instance)
4002 {
4003         int i;
4004         u16 max_cmd;
4005         u32 sge_sz;
4006         u32 frame_count;
4007         struct megasas_cmd *cmd;
4008
4009         max_cmd = instance->max_mfi_cmds;
4010
4011         /*
4012          * Size of our frame is 64 bytes for MFI frame, followed by max SG
4013          * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer
4014          */
4015         sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
4016             sizeof(struct megasas_sge32);
4017
4018         if (instance->flag_ieee)
4019                 sge_sz = sizeof(struct megasas_sge_skinny);
4020
4021         /*
4022          * For MFI controllers.
4023          * max_num_sge = 60
4024          * max_sge_sz  = 16 byte (sizeof megasas_sge_skinny)
4025          * Total 960 byte (15 MFI frame of 64 byte)
4026          *
4027          * Fusion adapter require only 3 extra frame.
4028          * max_num_sge = 16 (defined as MAX_IOCTL_SGE)
4029          * max_sge_sz  = 12 byte (sizeof  megasas_sge64)
4030          * Total 192 byte (3 MFI frame of 64 byte)
4031          */
4032         frame_count = (instance->adapter_type == MFI_SERIES) ?
4033                         (15 + 1) : (3 + 1);
4034         instance->mfi_frame_size = MEGAMFI_FRAME_SIZE * frame_count;
4035         /*
4036          * Use DMA pool facility provided by PCI layer
4037          */
4038         instance->frame_dma_pool = dma_pool_create("megasas frame pool",
4039                                         &instance->pdev->dev,
4040                                         instance->mfi_frame_size, 256, 0);
4041
4042         if (!instance->frame_dma_pool) {
4043                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup frame pool\n");
4044                 return -ENOMEM;
4045         }
4046
4047         instance->sense_dma_pool = dma_pool_create("megasas sense pool",
4048                                                    &instance->pdev->dev, 128,
4049                                                    4, 0);
4050
4051         if (!instance->sense_dma_pool) {
4052                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup sense pool\n");
4053
4054                 dma_pool_destroy(instance->frame_dma_pool);
4055                 instance->frame_dma_pool = NULL;
4056
4057                 return -ENOMEM;
4058         }
4059
4060         /*
4061          * Allocate and attach a frame to each of the commands in cmd_list.
4062          * By making cmd->index as the context instead of the &cmd, we can
4063          * always use 32bit context regardless of the architecture
4064          */
4065         for (i = 0; i < max_cmd; i++) {
4066
4067                 cmd = instance->cmd_list[i];
4068
4069                 cmd->frame = dma_pool_zalloc(instance->frame_dma_pool,
4070                                             GFP_KERNEL, &cmd->frame_phys_addr);
4071
4072                 cmd->sense = dma_pool_alloc(instance->sense_dma_pool,
4073                                             GFP_KERNEL, &cmd->sense_phys_addr);
4074
4075                 /*
4076                  * megasas_teardown_frame_pool() takes care of freeing
4077                  * whatever has been allocated
4078                  */
4079                 if (!cmd->frame || !cmd->sense) {
4080                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "dma_pool_alloc failed\n");
4081                         megasas_teardown_frame_pool(instance);
4082                         return -ENOMEM;
4083                 }
4084
4085                 cmd->frame->io.context = cpu_to_le32(cmd->index);
4086                 cmd->frame->io.pad_0 = 0;
4087                 if ((instance->adapter_type == MFI_SERIES) && reset_devices)
4088                         cmd->frame->hdr.cmd = MFI_CMD_INVALID;
4089         }
4090
4091         return 0;
4092 }
4093
4094 /**
4095  * megasas_free_cmds -  Free all the cmds in the free cmd pool
4096  * @instance:           Adapter soft state
4097  */
4098 void megasas_free_cmds(struct megasas_instance *instance)
4099 {
4100         int i;
4101
4102         /* First free the MFI frame pool */
4103         megasas_teardown_frame_pool(instance);
4104
4105         /* Free all the commands in the cmd_list */
4106         for (i = 0; i < instance->max_mfi_cmds; i++)
4107
4108                 kfree(instance->cmd_list[i]);
4109
4110         /* Free the cmd_list buffer itself */
4111         kfree(instance->cmd_list);
4112         instance->cmd_list = NULL;
4113
4114         INIT_LIST_HEAD(&instance->cmd_pool);
4115 }
4116
4117 /**
4118  * megasas_alloc_cmds - Allocates the command packets
4119  * @instance:           Adapter soft state
4120  *
4121  * Each command that is issued to the FW, whether IO commands from the OS or
4122  * internal commands like IOCTLs, are wrapped in local data structure called
4123  * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
4124  * the FW.
4125  *
4126  * Each frame has a 32-bit field called context (tag). This context is used
4127  * to get back the megasas_cmd from the frame when a frame gets completed in
4128  * the ISR. Typically the address of the megasas_cmd itself would be used as
4129  * the context. But we wanted to keep the differences between 32 and 64 bit
4130  * systems to the mininum. We always use 32 bit integers for the context. In
4131  * this driver, the 32 bit values are the indices into an array cmd_list.
4132  * This array is used only to look up the megasas_cmd given the context. The
4133  * free commands themselves are maintained in a linked list called cmd_pool.
4134  */
4135 int megasas_alloc_cmds(struct megasas_instance *instance)
4136 {
4137         int i;
4138         int j;
4139         u16 max_cmd;
4140         struct megasas_cmd *cmd;
4141
4142         max_cmd = instance->max_mfi_cmds;
4143
4144         /*
4145          * instance->cmd_list is an array of struct megasas_cmd pointers.
4146          * Allocate the dynamic array first and then allocate individual
4147          * commands.
4148          */
4149         instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
4150
4151         if (!instance->cmd_list) {
4152                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "out of memory\n");
4153                 return -ENOMEM;
4154         }
4155
4156         memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd);
4157
4158         for (i = 0; i < max_cmd; i++) {
4159                 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
4160                                                 GFP_KERNEL);
4161
4162                 if (!instance->cmd_list[i]) {
4163
4164                         for (j = 0; j < i; j++)
4165                                 kfree(instance->cmd_list[j]);
4166
4167                         kfree(instance->cmd_list);
4168                         instance->cmd_list = NULL;
4169
4170                         return -ENOMEM;
4171                 }
4172         }
4173
4174         for (i = 0; i < max_cmd; i++) {
4175                 cmd = instance->cmd_list[i];
4176                 memset(cmd, 0, sizeof(struct megasas_cmd));
4177                 cmd->index = i;
4178                 cmd->scmd = NULL;
4179                 cmd->instance = instance;
4180
4181                 list_add_tail(&cmd->list, &instance->cmd_pool);
4182         }
4183
4184         /*
4185          * Create a frame pool and assign one frame to each cmd
4186          */
4187         if (megasas_create_frame_pool(instance)) {
4188                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error creating frame DMA pool\n");
4189                 megasas_free_cmds(instance);
4190                 return -ENOMEM;
4191         }
4192
4193         return 0;
4194 }
4195
4196 /*
4197  * dcmd_timeout_ocr_possible -  Check if OCR is possible based on Driver/FW state.
4198  * @instance:                           Adapter soft state
4199  *
4200  * Return 0 for only Fusion adapter, if driver load/unload is not in progress
4201  * or FW is not under OCR.
4202  */
4203 inline int
4204 dcmd_timeout_ocr_possible(struct megasas_instance *instance) {
4205
4206         if (instance->adapter_type == MFI_SERIES)
4207                 return KILL_ADAPTER;
4208         else if (instance->unload ||
4209                         test_bit(MEGASAS_FUSION_IN_RESET, &instance->reset_flags))
4210                 return IGNORE_TIMEOUT;
4211         else
4212                 return INITIATE_OCR;
4213 }
4214
4215 static void
4216 megasas_get_pd_info(struct megasas_instance *instance, struct scsi_device *sdev)
4217 {
4218         int ret;
4219         struct megasas_cmd *cmd;
4220         struct megasas_dcmd_frame *dcmd;
4221
4222         struct MR_PRIV_DEVICE *mr_device_priv_data;
4223         u16 device_id = 0;
4224
4225         device_id = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + sdev->id;
4226         cmd = megasas_get_cmd(instance);
4227
4228         if (!cmd) {
4229                 dev_err(&instance->pdev->dev, "Failed to get cmd %s\n", __func__);
4230                 return;
4231         }
4232
4233         dcmd = &cmd->frame->dcmd;
4234
4235         memset(instance->pd_info, 0, sizeof(*instance->pd_info));
4236         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4237
4238         dcmd->mbox.s[0] = cpu_to_le16(device_id);
4239         dcmd->cmd = MFI_CMD_DCMD;
4240         dcmd->cmd_status = 0xFF;
4241         dcmd->sge_count = 1;
4242         dcmd->flags = MFI_FRAME_DIR_READ;
4243         dcmd->timeout = 0;
4244         dcmd->pad_0 = 0;
4245         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_PD_INFO));
4246         dcmd->opcode = cpu_to_le32(MR_DCMD_PD_GET_INFO);
4247
4248         megasas_set_dma_settings(instance, dcmd, instance->pd_info_h,
4249                                  sizeof(struct MR_PD_INFO));
4250
4251         if ((instance->adapter_type != MFI_SERIES) &&
4252             !instance->mask_interrupts)
4253                 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4254         else
4255                 ret = megasas_issue_polled(instance, cmd);
4256
4257         switch (ret) {
4258         case DCMD_SUCCESS:
4259                 mr_device_priv_data = sdev->hostdata;
4260                 le16_to_cpus((u16 *)&instance->pd_info->state.ddf.pdType);
4261                 mr_device_priv_data->interface_type =
4262                                 instance->pd_info->state.ddf.pdType.intf;
4263                 break;
4264
4265         case DCMD_TIMEOUT:
4266
4267                 switch (dcmd_timeout_ocr_possible(instance)) {
4268                 case INITIATE_OCR:
4269                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4270                         megasas_reset_fusion(instance->host,
4271                                 MFI_IO_TIMEOUT_OCR);
4272                         break;
4273                 case KILL_ADAPTER:
4274                         megaraid_sas_kill_hba(instance);
4275                         break;
4276                 case IGNORE_TIMEOUT:
4277                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4278                                 __func__, __LINE__);
4279                         break;
4280                 }
4281
4282                 break;
4283         }
4284
4285         if (ret != DCMD_TIMEOUT)
4286                 megasas_return_cmd(instance, cmd);
4287
4288         return;
4289 }
4290 /*
4291  * megasas_get_pd_list_info -   Returns FW's pd_list structure
4292  * @instance:                           Adapter soft state
4293  * @pd_list:                            pd_list structure
4294  *
4295  * Issues an internal command (DCMD) to get the FW's controller PD
4296  * list structure.  This information is mainly used to find out SYSTEM
4297  * supported by the FW.
4298  */
4299 static int
4300 megasas_get_pd_list(struct megasas_instance *instance)
4301 {
4302         int ret = 0, pd_index = 0;
4303         struct megasas_cmd *cmd;
4304         struct megasas_dcmd_frame *dcmd;
4305         struct MR_PD_LIST *ci;
4306         struct MR_PD_ADDRESS *pd_addr;
4307         dma_addr_t ci_h = 0;
4308
4309         if (instance->pd_list_not_supported) {
4310                 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4311                 "not supported by firmware\n");
4312                 return ret;
4313         }
4314
4315         ci = instance->pd_list_buf;
4316         ci_h = instance->pd_list_buf_h;
4317
4318         cmd = megasas_get_cmd(instance);
4319
4320         if (!cmd) {
4321                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "(get_pd_list): Failed to get cmd\n");
4322                 return -ENOMEM;
4323         }
4324
4325         dcmd = &cmd->frame->dcmd;
4326
4327         memset(ci, 0, sizeof(*ci));
4328         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4329
4330         dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
4331         dcmd->mbox.b[1] = 0;
4332         dcmd->cmd = MFI_CMD_DCMD;
4333         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4334         dcmd->sge_count = 1;
4335         dcmd->flags = MFI_FRAME_DIR_READ;
4336         dcmd->timeout = 0;
4337         dcmd->pad_0 = 0;
4338         dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
4339         dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY);
4340
4341         megasas_set_dma_settings(instance, dcmd, instance->pd_list_buf_h,
4342                                  (MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST)));
4343
4344         if ((instance->adapter_type != MFI_SERIES) &&
4345             !instance->mask_interrupts)
4346                 ret = megasas_issue_blocked_cmd(instance, cmd,
4347                         MFI_IO_TIMEOUT_SECS);
4348         else
4349                 ret = megasas_issue_polled(instance, cmd);
4350
4351         switch (ret) {
4352         case DCMD_FAILED:
4353                 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4354                         "failed/not supported by firmware\n");
4355
4356                 if (instance->adapter_type != MFI_SERIES)
4357                         megaraid_sas_kill_hba(instance);
4358                 else
4359                         instance->pd_list_not_supported = 1;
4360                 break;
4361         case DCMD_TIMEOUT:
4362
4363                 switch (dcmd_timeout_ocr_possible(instance)) {
4364                 case INITIATE_OCR:
4365                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4366                         /*
4367                          * DCMD failed from AEN path.
4368                          * AEN path already hold reset_mutex to avoid PCI access
4369                          * while OCR is in progress.
4370                          */
4371                         mutex_unlock(&instance->reset_mutex);
4372                         megasas_reset_fusion(instance->host,
4373                                                 MFI_IO_TIMEOUT_OCR);
4374                         mutex_lock(&instance->reset_mutex);
4375                         break;
4376                 case KILL_ADAPTER:
4377                         megaraid_sas_kill_hba(instance);
4378                         break;
4379                 case IGNORE_TIMEOUT:
4380                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d \n",
4381                                 __func__, __LINE__);
4382                         break;
4383                 }
4384
4385                 break;
4386
4387         case DCMD_SUCCESS:
4388                 pd_addr = ci->addr;
4389
4390                 if ((le32_to_cpu(ci->count) >
4391                         (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL)))
4392                         break;
4393
4394                 memset(instance->local_pd_list, 0,
4395                                 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
4396
4397                 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) {
4398                         instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid     =
4399                                         le16_to_cpu(pd_addr->deviceId);
4400                         instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType       =
4401                                         pd_addr->scsiDevType;
4402                         instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState      =
4403                                         MR_PD_STATE_SYSTEM;
4404                         pd_addr++;
4405                 }
4406
4407                 memcpy(instance->pd_list, instance->local_pd_list,
4408                         sizeof(instance->pd_list));
4409                 break;
4410
4411         }
4412
4413         if (ret != DCMD_TIMEOUT)
4414                 megasas_return_cmd(instance, cmd);
4415
4416         return ret;
4417 }
4418
4419 /*
4420  * megasas_get_ld_list_info -   Returns FW's ld_list structure
4421  * @instance:                           Adapter soft state
4422  * @ld_list:                            ld_list structure
4423  *
4424  * Issues an internal command (DCMD) to get the FW's controller PD
4425  * list structure.  This information is mainly used to find out SYSTEM
4426  * supported by the FW.
4427  */
4428 static int
4429 megasas_get_ld_list(struct megasas_instance *instance)
4430 {
4431         int ret = 0, ld_index = 0, ids = 0;
4432         struct megasas_cmd *cmd;
4433         struct megasas_dcmd_frame *dcmd;
4434         struct MR_LD_LIST *ci;
4435         dma_addr_t ci_h = 0;
4436         u32 ld_count;
4437
4438         ci = instance->ld_list_buf;
4439         ci_h = instance->ld_list_buf_h;
4440
4441         cmd = megasas_get_cmd(instance);
4442
4443         if (!cmd) {
4444                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_list: Failed to get cmd\n");
4445                 return -ENOMEM;
4446         }
4447
4448         dcmd = &cmd->frame->dcmd;
4449
4450         memset(ci, 0, sizeof(*ci));
4451         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4452
4453         if (instance->supportmax256vd)
4454                 dcmd->mbox.b[0] = 1;
4455         dcmd->cmd = MFI_CMD_DCMD;
4456         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4457         dcmd->sge_count = 1;
4458         dcmd->flags = MFI_FRAME_DIR_READ;
4459         dcmd->timeout = 0;
4460         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST));
4461         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST);
4462         dcmd->pad_0  = 0;
4463
4464         megasas_set_dma_settings(instance, dcmd, ci_h,
4465                                  sizeof(struct MR_LD_LIST));
4466
4467         if ((instance->adapter_type != MFI_SERIES) &&
4468             !instance->mask_interrupts)
4469                 ret = megasas_issue_blocked_cmd(instance, cmd,
4470                         MFI_IO_TIMEOUT_SECS);
4471         else
4472                 ret = megasas_issue_polled(instance, cmd);
4473
4474         ld_count = le32_to_cpu(ci->ldCount);
4475
4476         switch (ret) {
4477         case DCMD_FAILED:
4478                 megaraid_sas_kill_hba(instance);
4479                 break;
4480         case DCMD_TIMEOUT:
4481
4482                 switch (dcmd_timeout_ocr_possible(instance)) {
4483                 case INITIATE_OCR:
4484                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4485                         /*
4486                          * DCMD failed from AEN path.
4487                          * AEN path already hold reset_mutex to avoid PCI access
4488                          * while OCR is in progress.
4489                          */
4490                         mutex_unlock(&instance->reset_mutex);
4491                         megasas_reset_fusion(instance->host,
4492                                                 MFI_IO_TIMEOUT_OCR);
4493                         mutex_lock(&instance->reset_mutex);
4494                         break;
4495                 case KILL_ADAPTER:
4496                         megaraid_sas_kill_hba(instance);
4497                         break;
4498                 case IGNORE_TIMEOUT:
4499                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4500                                 __func__, __LINE__);
4501                         break;
4502                 }
4503
4504                 break;
4505
4506         case DCMD_SUCCESS:
4507                 if (ld_count > instance->fw_supported_vd_count)
4508                         break;
4509
4510                 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
4511
4512                 for (ld_index = 0; ld_index < ld_count; ld_index++) {
4513                         if (ci->ldList[ld_index].state != 0) {
4514                                 ids = ci->ldList[ld_index].ref.targetId;
4515                                 instance->ld_ids[ids] = ci->ldList[ld_index].ref.targetId;
4516                         }
4517                 }
4518
4519                 break;
4520         }
4521
4522         if (ret != DCMD_TIMEOUT)
4523                 megasas_return_cmd(instance, cmd);
4524
4525         return ret;
4526 }
4527
4528 /**
4529  * megasas_ld_list_query -      Returns FW's ld_list structure
4530  * @instance:                           Adapter soft state
4531  * @ld_list:                            ld_list structure
4532  *
4533  * Issues an internal command (DCMD) to get the FW's controller PD
4534  * list structure.  This information is mainly used to find out SYSTEM
4535  * supported by the FW.
4536  */
4537 static int
4538 megasas_ld_list_query(struct megasas_instance *instance, u8 query_type)
4539 {
4540         int ret = 0, ld_index = 0, ids = 0;
4541         struct megasas_cmd *cmd;
4542         struct megasas_dcmd_frame *dcmd;
4543         struct MR_LD_TARGETID_LIST *ci;
4544         dma_addr_t ci_h = 0;
4545         u32 tgtid_count;
4546
4547         ci = instance->ld_targetid_list_buf;
4548         ci_h = instance->ld_targetid_list_buf_h;
4549
4550         cmd = megasas_get_cmd(instance);
4551
4552         if (!cmd) {
4553                 dev_warn(&instance->pdev->dev,
4554                          "megasas_ld_list_query: Failed to get cmd\n");
4555                 return -ENOMEM;
4556         }
4557
4558         dcmd = &cmd->frame->dcmd;
4559
4560         memset(ci, 0, sizeof(*ci));
4561         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4562
4563         dcmd->mbox.b[0] = query_type;
4564         if (instance->supportmax256vd)
4565                 dcmd->mbox.b[2] = 1;
4566
4567         dcmd->cmd = MFI_CMD_DCMD;
4568         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4569         dcmd->sge_count = 1;
4570         dcmd->flags = MFI_FRAME_DIR_READ;
4571         dcmd->timeout = 0;
4572         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
4573         dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY);
4574         dcmd->pad_0  = 0;
4575
4576         megasas_set_dma_settings(instance, dcmd, ci_h,
4577                                  sizeof(struct MR_LD_TARGETID_LIST));
4578
4579         if ((instance->adapter_type != MFI_SERIES) &&
4580             !instance->mask_interrupts)
4581                 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4582         else
4583                 ret = megasas_issue_polled(instance, cmd);
4584
4585         switch (ret) {
4586         case DCMD_FAILED:
4587                 dev_info(&instance->pdev->dev,
4588                         "DCMD not supported by firmware - %s %d\n",
4589                                 __func__, __LINE__);
4590                 ret = megasas_get_ld_list(instance);
4591                 break;
4592         case DCMD_TIMEOUT:
4593                 switch (dcmd_timeout_ocr_possible(instance)) {
4594                 case INITIATE_OCR:
4595                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4596                         /*
4597                          * DCMD failed from AEN path.
4598                          * AEN path already hold reset_mutex to avoid PCI access
4599                          * while OCR is in progress.
4600                          */
4601                         mutex_unlock(&instance->reset_mutex);
4602                         megasas_reset_fusion(instance->host,
4603                                                 MFI_IO_TIMEOUT_OCR);
4604                         mutex_lock(&instance->reset_mutex);
4605                         break;
4606                 case KILL_ADAPTER:
4607                         megaraid_sas_kill_hba(instance);
4608                         break;
4609                 case IGNORE_TIMEOUT:
4610                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4611                                 __func__, __LINE__);
4612                         break;
4613                 }
4614
4615                 break;
4616         case DCMD_SUCCESS:
4617                 tgtid_count = le32_to_cpu(ci->count);
4618
4619                 if ((tgtid_count > (instance->fw_supported_vd_count)))
4620                         break;
4621
4622                 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
4623                 for (ld_index = 0; ld_index < tgtid_count; ld_index++) {
4624                         ids = ci->targetId[ld_index];
4625                         instance->ld_ids[ids] = ci->targetId[ld_index];
4626                 }
4627
4628                 break;
4629         }
4630
4631         if (ret != DCMD_TIMEOUT)
4632                 megasas_return_cmd(instance, cmd);
4633
4634         return ret;
4635 }
4636
4637 /**
4638  * dcmd.opcode            - MR_DCMD_CTRL_DEVICE_LIST_GET
4639  * dcmd.mbox              - reserved
4640  * dcmd.sge IN            - ptr to return MR_HOST_DEVICE_LIST structure
4641  * Desc:    This DCMD will return the combined device list
4642  * Status:  MFI_STAT_OK - List returned successfully
4643  *          MFI_STAT_INVALID_CMD - Firmware support for the feature has been
4644  *                                 disabled
4645  * @instance:                   Adapter soft state
4646  * @is_probe:                   Driver probe check
4647  * Return:                      0 if DCMD succeeded
4648  *                               non-zero if failed
4649  */
4650 static int
4651 megasas_host_device_list_query(struct megasas_instance *instance,
4652                                bool is_probe)
4653 {
4654         int ret, i, target_id;
4655         struct megasas_cmd *cmd;
4656         struct megasas_dcmd_frame *dcmd;
4657         struct MR_HOST_DEVICE_LIST *ci;
4658         u32 count;
4659         dma_addr_t ci_h;
4660
4661         ci = instance->host_device_list_buf;
4662         ci_h = instance->host_device_list_buf_h;
4663
4664         cmd = megasas_get_cmd(instance);
4665
4666         if (!cmd) {
4667                 dev_warn(&instance->pdev->dev,
4668                          "%s: failed to get cmd\n",
4669                          __func__);
4670                 return -ENOMEM;
4671         }
4672
4673         dcmd = &cmd->frame->dcmd;
4674
4675         memset(ci, 0, sizeof(*ci));
4676         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4677
4678         dcmd->mbox.b[0] = is_probe ? 0 : 1;
4679         dcmd->cmd = MFI_CMD_DCMD;
4680         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4681         dcmd->sge_count = 1;
4682         dcmd->flags = MFI_FRAME_DIR_READ;
4683         dcmd->timeout = 0;
4684         dcmd->pad_0 = 0;
4685         dcmd->data_xfer_len = cpu_to_le32(HOST_DEVICE_LIST_SZ);
4686         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_DEVICE_LIST_GET);
4687
4688         megasas_set_dma_settings(instance, dcmd, ci_h, HOST_DEVICE_LIST_SZ);
4689
4690         if (!instance->mask_interrupts) {
4691                 ret = megasas_issue_blocked_cmd(instance, cmd,
4692                                                 MFI_IO_TIMEOUT_SECS);
4693         } else {
4694                 ret = megasas_issue_polled(instance, cmd);
4695                 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4696         }
4697
4698         switch (ret) {
4699         case DCMD_SUCCESS:
4700                 /* Fill the internal pd_list and ld_ids array based on
4701                  * targetIds returned by FW
4702                  */
4703                 count = le32_to_cpu(ci->count);
4704
4705                 memset(instance->local_pd_list, 0,
4706                        MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
4707                 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
4708                 for (i = 0; i < count; i++) {
4709                         target_id = le16_to_cpu(ci->host_device_list[i].target_id);
4710                         if (ci->host_device_list[i].flags.u.bits.is_sys_pd) {
4711                                 instance->local_pd_list[target_id].tid = target_id;
4712                                 instance->local_pd_list[target_id].driveType =
4713                                                 ci->host_device_list[i].scsi_type;
4714                                 instance->local_pd_list[target_id].driveState =
4715                                                 MR_PD_STATE_SYSTEM;
4716                         } else {
4717                                 instance->ld_ids[target_id] = target_id;
4718                         }
4719                 }
4720
4721                 memcpy(instance->pd_list, instance->local_pd_list,
4722                        sizeof(instance->pd_list));
4723                 break;
4724
4725         case DCMD_TIMEOUT:
4726                 switch (dcmd_timeout_ocr_possible(instance)) {
4727                 case INITIATE_OCR:
4728                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4729                         megasas_reset_fusion(instance->host,
4730                                 MFI_IO_TIMEOUT_OCR);
4731                         break;
4732                 case KILL_ADAPTER:
4733                         megaraid_sas_kill_hba(instance);
4734                         break;
4735                 case IGNORE_TIMEOUT:
4736                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4737                                  __func__, __LINE__);
4738                         break;
4739                 }
4740                 break;
4741         case DCMD_FAILED:
4742                 dev_err(&instance->pdev->dev,
4743                         "%s: MR_DCMD_CTRL_DEVICE_LIST_GET failed\n",
4744                         __func__);
4745                 break;
4746         }
4747
4748         if (ret != DCMD_TIMEOUT)
4749                 megasas_return_cmd(instance, cmd);
4750
4751         return ret;
4752 }
4753
4754 /*
4755  * megasas_update_ext_vd_details : Update details w.r.t Extended VD
4756  * instance                      : Controller's instance
4757 */
4758 static void megasas_update_ext_vd_details(struct megasas_instance *instance)
4759 {
4760         struct fusion_context *fusion;
4761         u32 ventura_map_sz = 0;
4762
4763         fusion = instance->ctrl_context;
4764         /* For MFI based controllers return dummy success */
4765         if (!fusion)
4766                 return;
4767
4768         instance->supportmax256vd =
4769                 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs;
4770         /* Below is additional check to address future FW enhancement */
4771         if (instance->ctrl_info_buf->max_lds > 64)
4772                 instance->supportmax256vd = 1;
4773
4774         instance->drv_supported_vd_count = MEGASAS_MAX_LD_CHANNELS
4775                                         * MEGASAS_MAX_DEV_PER_CHANNEL;
4776         instance->drv_supported_pd_count = MEGASAS_MAX_PD_CHANNELS
4777                                         * MEGASAS_MAX_DEV_PER_CHANNEL;
4778         if (instance->supportmax256vd) {
4779                 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES_EXT;
4780                 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
4781         } else {
4782                 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
4783                 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
4784         }
4785
4786         dev_info(&instance->pdev->dev,
4787                 "FW provided supportMaxExtLDs: %d\tmax_lds: %d\n",
4788                 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs ? 1 : 0,
4789                 instance->ctrl_info_buf->max_lds);
4790
4791         if (instance->max_raid_mapsize) {
4792                 ventura_map_sz = instance->max_raid_mapsize *
4793                                                 MR_MIN_MAP_SIZE; /* 64k */
4794                 fusion->current_map_sz = ventura_map_sz;
4795                 fusion->max_map_sz = ventura_map_sz;
4796         } else {
4797                 fusion->old_map_sz =  sizeof(struct MR_FW_RAID_MAP) +
4798                                         (sizeof(struct MR_LD_SPAN_MAP) *
4799                                         (instance->fw_supported_vd_count - 1));
4800                 fusion->new_map_sz =  sizeof(struct MR_FW_RAID_MAP_EXT);
4801
4802                 fusion->max_map_sz =
4803                         max(fusion->old_map_sz, fusion->new_map_sz);
4804
4805                 if (instance->supportmax256vd)
4806                         fusion->current_map_sz = fusion->new_map_sz;
4807                 else
4808                         fusion->current_map_sz = fusion->old_map_sz;
4809         }
4810         /* irrespective of FW raid maps, driver raid map is constant */
4811         fusion->drv_map_sz = sizeof(struct MR_DRV_RAID_MAP_ALL);
4812 }
4813
4814 /*
4815  * dcmd.opcode                - MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES
4816  * dcmd.hdr.length            - number of bytes to read
4817  * dcmd.sge                   - Ptr to MR_SNAPDUMP_PROPERTIES
4818  * Desc:                         Fill in snapdump properties
4819  * Status:                       MFI_STAT_OK- Command successful
4820  */
4821 void megasas_get_snapdump_properties(struct megasas_instance *instance)
4822 {
4823         int ret = 0;
4824         struct megasas_cmd *cmd;
4825         struct megasas_dcmd_frame *dcmd;
4826         struct MR_SNAPDUMP_PROPERTIES *ci;
4827         dma_addr_t ci_h = 0;
4828
4829         ci = instance->snapdump_prop;
4830         ci_h = instance->snapdump_prop_h;
4831
4832         if (!ci)
4833                 return;
4834
4835         cmd = megasas_get_cmd(instance);
4836
4837         if (!cmd) {
4838                 dev_dbg(&instance->pdev->dev, "Failed to get a free cmd\n");
4839                 return;
4840         }
4841
4842         dcmd = &cmd->frame->dcmd;
4843
4844         memset(ci, 0, sizeof(*ci));
4845         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4846
4847         dcmd->cmd = MFI_CMD_DCMD;
4848         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4849         dcmd->sge_count = 1;
4850         dcmd->flags = MFI_FRAME_DIR_READ;
4851         dcmd->timeout = 0;
4852         dcmd->pad_0 = 0;
4853         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_SNAPDUMP_PROPERTIES));
4854         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES);
4855
4856         megasas_set_dma_settings(instance, dcmd, ci_h,
4857                                  sizeof(struct MR_SNAPDUMP_PROPERTIES));
4858
4859         if (!instance->mask_interrupts) {
4860                 ret = megasas_issue_blocked_cmd(instance, cmd,
4861                                                 MFI_IO_TIMEOUT_SECS);
4862         } else {
4863                 ret = megasas_issue_polled(instance, cmd);
4864                 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4865         }
4866
4867         switch (ret) {
4868         case DCMD_SUCCESS:
4869                 instance->snapdump_wait_time =
4870                         min_t(u8, ci->trigger_min_num_sec_before_ocr,
4871                                 MEGASAS_MAX_SNAP_DUMP_WAIT_TIME);
4872                 break;
4873
4874         case DCMD_TIMEOUT:
4875                 switch (dcmd_timeout_ocr_possible(instance)) {
4876                 case INITIATE_OCR:
4877                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4878                         megasas_reset_fusion(instance->host,
4879                                 MFI_IO_TIMEOUT_OCR);
4880                         break;
4881                 case KILL_ADAPTER:
4882                         megaraid_sas_kill_hba(instance);
4883                         break;
4884                 case IGNORE_TIMEOUT:
4885                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4886                                 __func__, __LINE__);
4887                         break;
4888                 }
4889         }
4890
4891         if (ret != DCMD_TIMEOUT)
4892                 megasas_return_cmd(instance, cmd);
4893 }
4894
4895 /**
4896  * megasas_get_controller_info -        Returns FW's controller structure
4897  * @instance:                           Adapter soft state
4898  *
4899  * Issues an internal command (DCMD) to get the FW's controller structure.
4900  * This information is mainly used to find out the maximum IO transfer per
4901  * command supported by the FW.
4902  */
4903 int
4904 megasas_get_ctrl_info(struct megasas_instance *instance)
4905 {
4906         int ret = 0;
4907         struct megasas_cmd *cmd;
4908         struct megasas_dcmd_frame *dcmd;
4909         struct megasas_ctrl_info *ci;
4910         dma_addr_t ci_h = 0;
4911
4912         ci = instance->ctrl_info_buf;
4913         ci_h = instance->ctrl_info_buf_h;
4914
4915         cmd = megasas_get_cmd(instance);
4916
4917         if (!cmd) {
4918                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a free cmd\n");
4919                 return -ENOMEM;
4920         }
4921
4922         dcmd = &cmd->frame->dcmd;
4923
4924         memset(ci, 0, sizeof(*ci));
4925         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4926
4927         dcmd->cmd = MFI_CMD_DCMD;
4928         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4929         dcmd->sge_count = 1;
4930         dcmd->flags = MFI_FRAME_DIR_READ;
4931         dcmd->timeout = 0;
4932         dcmd->pad_0 = 0;
4933         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info));
4934         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO);
4935         dcmd->mbox.b[0] = 1;
4936
4937         megasas_set_dma_settings(instance, dcmd, ci_h,
4938                                  sizeof(struct megasas_ctrl_info));
4939
4940         if ((instance->adapter_type != MFI_SERIES) &&
4941             !instance->mask_interrupts) {
4942                 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4943         } else {
4944                 ret = megasas_issue_polled(instance, cmd);
4945                 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4946         }
4947
4948         switch (ret) {
4949         case DCMD_SUCCESS:
4950                 /* Save required controller information in
4951                  * CPU endianness format.
4952                  */
4953                 le32_to_cpus((u32 *)&ci->properties.OnOffProperties);
4954                 le16_to_cpus((u16 *)&ci->properties.on_off_properties2);
4955                 le32_to_cpus((u32 *)&ci->adapterOperations2);
4956                 le32_to_cpus((u32 *)&ci->adapterOperations3);
4957                 le16_to_cpus((u16 *)&ci->adapter_operations4);
4958
4959                 /* Update the latest Ext VD info.
4960                  * From Init path, store current firmware details.
4961                  * From OCR path, detect any firmware properties changes.
4962                  * in case of Firmware upgrade without system reboot.
4963                  */
4964                 megasas_update_ext_vd_details(instance);
4965                 instance->use_seqnum_jbod_fp =
4966                         ci->adapterOperations3.useSeqNumJbodFP;
4967                 instance->support_morethan256jbod =
4968                         ci->adapter_operations4.support_pd_map_target_id;
4969                 instance->support_nvme_passthru =
4970                         ci->adapter_operations4.support_nvme_passthru;
4971                 instance->task_abort_tmo = ci->TaskAbortTO;
4972                 instance->max_reset_tmo = ci->MaxResetTO;
4973
4974                 /*Check whether controller is iMR or MR */
4975                 instance->is_imr = (ci->memory_size ? 0 : 1);
4976
4977                 instance->snapdump_wait_time =
4978                         (ci->properties.on_off_properties2.enable_snap_dump ?
4979                          MEGASAS_DEFAULT_SNAP_DUMP_WAIT_TIME : 0);
4980
4981                 instance->enable_fw_dev_list =
4982                         ci->properties.on_off_properties2.enable_fw_dev_list;
4983
4984                 dev_info(&instance->pdev->dev,
4985                         "controller type\t: %s(%dMB)\n",
4986                         instance->is_imr ? "iMR" : "MR",
4987                         le16_to_cpu(ci->memory_size));
4988
4989                 instance->disableOnlineCtrlReset =
4990                         ci->properties.OnOffProperties.disableOnlineCtrlReset;
4991                 instance->secure_jbod_support =
4992                         ci->adapterOperations3.supportSecurityonJBOD;
4993                 dev_info(&instance->pdev->dev, "Online Controller Reset(OCR)\t: %s\n",
4994                         instance->disableOnlineCtrlReset ? "Disabled" : "Enabled");
4995                 dev_info(&instance->pdev->dev, "Secure JBOD support\t: %s\n",
4996                         instance->secure_jbod_support ? "Yes" : "No");
4997                 dev_info(&instance->pdev->dev, "NVMe passthru support\t: %s\n",
4998                          instance->support_nvme_passthru ? "Yes" : "No");
4999                 dev_info(&instance->pdev->dev,
5000                          "FW provided TM TaskAbort/Reset timeout\t: %d secs/%d secs\n",
5001                          instance->task_abort_tmo, instance->max_reset_tmo);
5002
5003                 break;
5004
5005         case DCMD_TIMEOUT:
5006                 switch (dcmd_timeout_ocr_possible(instance)) {
5007                 case INITIATE_OCR:
5008                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5009                         megasas_reset_fusion(instance->host,
5010                                 MFI_IO_TIMEOUT_OCR);
5011                         break;
5012                 case KILL_ADAPTER:
5013                         megaraid_sas_kill_hba(instance);
5014                         break;
5015                 case IGNORE_TIMEOUT:
5016                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5017                                 __func__, __LINE__);
5018                         break;
5019                 }
5020                 break;
5021         case DCMD_FAILED:
5022                 megaraid_sas_kill_hba(instance);
5023                 break;
5024
5025         }
5026
5027         if (ret != DCMD_TIMEOUT)
5028                 megasas_return_cmd(instance, cmd);
5029
5030         return ret;
5031 }
5032
5033 /*
5034  * megasas_set_crash_dump_params -      Sends address of crash dump DMA buffer
5035  *                                      to firmware
5036  *
5037  * @instance:                           Adapter soft state
5038  * @crash_buf_state             -       tell FW to turn ON/OFF crash dump feature
5039                                         MR_CRASH_BUF_TURN_OFF = 0
5040                                         MR_CRASH_BUF_TURN_ON = 1
5041  * @return 0 on success non-zero on failure.
5042  * Issues an internal command (DCMD) to set parameters for crash dump feature.
5043  * Driver will send address of crash dump DMA buffer and set mbox to tell FW
5044  * that driver supports crash dump feature. This DCMD will be sent only if
5045  * crash dump feature is supported by the FW.
5046  *
5047  */
5048 int megasas_set_crash_dump_params(struct megasas_instance *instance,
5049         u8 crash_buf_state)
5050 {
5051         int ret = 0;
5052         struct megasas_cmd *cmd;
5053         struct megasas_dcmd_frame *dcmd;
5054
5055         cmd = megasas_get_cmd(instance);
5056
5057         if (!cmd) {
5058                 dev_err(&instance->pdev->dev, "Failed to get a free cmd\n");
5059                 return -ENOMEM;
5060         }
5061
5062
5063         dcmd = &cmd->frame->dcmd;
5064
5065         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5066         dcmd->mbox.b[0] = crash_buf_state;
5067         dcmd->cmd = MFI_CMD_DCMD;
5068         dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5069         dcmd->sge_count = 1;
5070         dcmd->flags = MFI_FRAME_DIR_NONE;
5071         dcmd->timeout = 0;
5072         dcmd->pad_0 = 0;
5073         dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE);
5074         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS);
5075
5076         megasas_set_dma_settings(instance, dcmd, instance->crash_dump_h,
5077                                  CRASH_DMA_BUF_SIZE);
5078
5079         if ((instance->adapter_type != MFI_SERIES) &&
5080             !instance->mask_interrupts)
5081                 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
5082         else
5083                 ret = megasas_issue_polled(instance, cmd);
5084
5085         if (ret == DCMD_TIMEOUT) {
5086                 switch (dcmd_timeout_ocr_possible(instance)) {
5087                 case INITIATE_OCR:
5088                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5089                         megasas_reset_fusion(instance->host,
5090                                         MFI_IO_TIMEOUT_OCR);
5091                         break;
5092                 case KILL_ADAPTER:
5093                         megaraid_sas_kill_hba(instance);
5094                         break;
5095                 case IGNORE_TIMEOUT:
5096                         dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5097                                 __func__, __LINE__);
5098                         break;
5099                 }
5100         } else
5101                 megasas_return_cmd(instance, cmd);
5102
5103         return ret;
5104 }
5105
5106 /**
5107  * megasas_issue_init_mfi -     Initializes the FW
5108  * @instance:           Adapter soft state
5109  *
5110  * Issues the INIT MFI cmd
5111  */
5112 static int
5113 megasas_issue_init_mfi(struct megasas_instance *instance)
5114 {
5115         __le32 context;
5116         struct megasas_cmd *cmd;
5117         struct megasas_init_frame *init_frame;
5118         struct megasas_init_queue_info *initq_info;
5119         dma_addr_t init_frame_h;
5120         dma_addr_t initq_info_h;
5121
5122         /*
5123          * Prepare a init frame. Note the init frame points to queue info
5124          * structure. Each frame has SGL allocated after first 64 bytes. For
5125          * this frame - since we don't need any SGL - we use SGL's space as
5126          * queue info structure
5127          *
5128          * We will not get a NULL command below. We just created the pool.
5129          */
5130         cmd = megasas_get_cmd(instance);
5131
5132         init_frame = (struct megasas_init_frame *)cmd->frame;
5133         initq_info = (struct megasas_init_queue_info *)
5134                 ((unsigned long)init_frame + 64);
5135
5136         init_frame_h = cmd->frame_phys_addr;
5137         initq_info_h = init_frame_h + 64;
5138
5139         context = init_frame->context;
5140         memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
5141         memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
5142         init_frame->context = context;
5143
5144         initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1);
5145         initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h);
5146
5147         initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h);
5148         initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h);
5149
5150         init_frame->cmd = MFI_CMD_INIT;
5151         init_frame->cmd_status = MFI_STAT_INVALID_STATUS;
5152         init_frame->queue_info_new_phys_addr_lo =
5153                 cpu_to_le32(lower_32_bits(initq_info_h));
5154         init_frame->queue_info_new_phys_addr_hi =
5155                 cpu_to_le32(upper_32_bits(initq_info_h));
5156
5157         init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info));
5158
5159         /*
5160          * disable the intr before firing the init frame to FW
5161          */
5162         instance->instancet->disable_intr(instance);
5163
5164         /*
5165          * Issue the init frame in polled mode
5166          */
5167
5168         if (megasas_issue_polled(instance, cmd)) {
5169                 dev_err(&instance->pdev->dev, "Failed to init firmware\n");
5170                 megasas_return_cmd(instance, cmd);
5171                 goto fail_fw_init;
5172         }
5173
5174         megasas_return_cmd(instance, cmd);
5175
5176         return 0;
5177
5178 fail_fw_init:
5179         return -EINVAL;
5180 }
5181
5182 static u32
5183 megasas_init_adapter_mfi(struct megasas_instance *instance)
5184 {
5185         u32 context_sz;
5186         u32 reply_q_sz;
5187
5188         /*
5189          * Get various operational parameters from status register
5190          */
5191         instance->max_fw_cmds = instance->instancet->read_fw_status_reg(instance) & 0x00FFFF;
5192         /*
5193          * Reduce the max supported cmds by 1. This is to ensure that the
5194          * reply_q_sz (1 more than the max cmd that driver may send)
5195          * does not exceed max cmds that the FW can support
5196          */
5197         instance->max_fw_cmds = instance->max_fw_cmds-1;
5198         instance->max_mfi_cmds = instance->max_fw_cmds;
5199         instance->max_num_sge = (instance->instancet->read_fw_status_reg(instance) & 0xFF0000) >>
5200                                         0x10;
5201         /*
5202          * For MFI skinny adapters, MEGASAS_SKINNY_INT_CMDS commands
5203          * are reserved for IOCTL + driver's internal DCMDs.
5204          */
5205         if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
5206                 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
5207                 instance->max_scsi_cmds = (instance->max_fw_cmds -
5208                         MEGASAS_SKINNY_INT_CMDS);
5209                 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
5210         } else {
5211                 instance->max_scsi_cmds = (instance->max_fw_cmds -
5212                         MEGASAS_INT_CMDS);
5213                 sema_init(&instance->ioctl_sem, (MEGASAS_MFI_IOCTL_CMDS));
5214         }
5215
5216         instance->cur_can_queue = instance->max_scsi_cmds;
5217         /*
5218          * Create a pool of commands
5219          */
5220         if (megasas_alloc_cmds(instance))
5221                 goto fail_alloc_cmds;
5222
5223         /*
5224          * Allocate memory for reply queue. Length of reply queue should
5225          * be _one_ more than the maximum commands handled by the firmware.
5226          *
5227          * Note: When FW completes commands, it places corresponding contex
5228          * values in this circular reply queue. This circular queue is a fairly
5229          * typical producer-consumer queue. FW is the producer (of completed
5230          * commands) and the driver is the consumer.
5231          */
5232         context_sz = sizeof(u32);
5233         reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
5234
5235         instance->reply_queue = dma_alloc_coherent(&instance->pdev->dev,
5236                         reply_q_sz, &instance->reply_queue_h, GFP_KERNEL);
5237
5238         if (!instance->reply_queue) {
5239                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Out of DMA mem for reply queue\n");
5240                 goto fail_reply_queue;
5241         }
5242
5243         if (megasas_issue_init_mfi(instance))
5244                 goto fail_fw_init;
5245
5246         if (megasas_get_ctrl_info(instance)) {
5247                 dev_err(&instance->pdev->dev, "(%d): Could get controller info "
5248                         "Fail from %s %d\n", instance->unique_id,
5249                         __func__, __LINE__);
5250                 goto fail_fw_init;
5251         }
5252
5253         instance->fw_support_ieee = 0;
5254         instance->fw_support_ieee =
5255                 (instance->instancet->read_fw_status_reg(instance) &
5256                 0x04000000);
5257
5258         dev_notice(&instance->pdev->dev, "megasas_init_mfi: fw_support_ieee=%d",
5259                         instance->fw_support_ieee);
5260
5261         if (instance->fw_support_ieee)
5262                 instance->flag_ieee = 1;
5263
5264         return 0;
5265
5266 fail_fw_init:
5267
5268         dma_free_coherent(&instance->pdev->dev, reply_q_sz,
5269                             instance->reply_queue, instance->reply_queue_h);
5270 fail_reply_queue:
5271         megasas_free_cmds(instance);
5272
5273 fail_alloc_cmds:
5274         return 1;
5275 }
5276
5277 /*
5278  * megasas_setup_irqs_ioapic -          register legacy interrupts.
5279  * @instance:                           Adapter soft state
5280  *
5281  * Do not enable interrupt, only setup ISRs.
5282  *
5283  * Return 0 on success.
5284  */
5285 static int
5286 megasas_setup_irqs_ioapic(struct megasas_instance *instance)
5287 {
5288         struct pci_dev *pdev;
5289
5290         pdev = instance->pdev;
5291         instance->irq_context[0].instance = instance;
5292         instance->irq_context[0].MSIxIndex = 0;
5293         if (request_irq(pci_irq_vector(pdev, 0),
5294                         instance->instancet->service_isr, IRQF_SHARED,
5295                         "megasas", &instance->irq_context[0])) {
5296                 dev_err(&instance->pdev->dev,
5297                                 "Failed to register IRQ from %s %d\n",
5298                                 __func__, __LINE__);
5299                 return -1;
5300         }
5301         return 0;
5302 }
5303
5304 /**
5305  * megasas_setup_irqs_msix -            register MSI-x interrupts.
5306  * @instance:                           Adapter soft state
5307  * @is_probe:                           Driver probe check
5308  *
5309  * Do not enable interrupt, only setup ISRs.
5310  *
5311  * Return 0 on success.
5312  */
5313 static int
5314 megasas_setup_irqs_msix(struct megasas_instance *instance, u8 is_probe)
5315 {
5316         int i, j;
5317         struct pci_dev *pdev;
5318
5319         pdev = instance->pdev;
5320
5321         /* Try MSI-x */
5322         for (i = 0; i < instance->msix_vectors; i++) {
5323                 instance->irq_context[i].instance = instance;
5324                 instance->irq_context[i].MSIxIndex = i;
5325                 if (request_irq(pci_irq_vector(pdev, i),
5326                         instance->instancet->service_isr, 0, "megasas",
5327                         &instance->irq_context[i])) {
5328                         dev_err(&instance->pdev->dev,
5329                                 "Failed to register IRQ for vector %d.\n", i);
5330                         for (j = 0; j < i; j++)
5331                                 free_irq(pci_irq_vector(pdev, j),
5332                                          &instance->irq_context[j]);
5333                         /* Retry irq register for IO_APIC*/
5334                         instance->msix_vectors = 0;
5335                         if (is_probe) {
5336                                 pci_free_irq_vectors(instance->pdev);
5337                                 return megasas_setup_irqs_ioapic(instance);
5338                         } else {
5339                                 return -1;
5340                         }
5341                 }
5342         }
5343         return 0;
5344 }
5345
5346 /*
5347  * megasas_destroy_irqs-                unregister interrupts.
5348  * @instance:                           Adapter soft state
5349  * return:                              void
5350  */
5351 static void
5352 megasas_destroy_irqs(struct megasas_instance *instance) {
5353
5354         int i;
5355
5356         if (instance->msix_vectors)
5357                 for (i = 0; i < instance->msix_vectors; i++) {
5358                         free_irq(pci_irq_vector(instance->pdev, i),
5359                                  &instance->irq_context[i]);
5360                 }
5361         else
5362                 free_irq(pci_irq_vector(instance->pdev, 0),
5363                          &instance->irq_context[0]);
5364 }
5365
5366 /**
5367  * megasas_setup_jbod_map -     setup jbod map for FP seq_number.
5368  * @instance:                           Adapter soft state
5369  * @is_probe:                           Driver probe check
5370  *
5371  * Return 0 on success.
5372  */
5373 void
5374 megasas_setup_jbod_map(struct megasas_instance *instance)
5375 {
5376         int i;
5377         struct fusion_context *fusion = instance->ctrl_context;
5378         u32 pd_seq_map_sz;
5379
5380         pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
5381                 (sizeof(struct MR_PD_CFG_SEQ) * (MAX_PHYSICAL_DEVICES - 1));
5382
5383         if (reset_devices || !fusion ||
5384                 !instance->ctrl_info_buf->adapterOperations3.useSeqNumJbodFP) {
5385                 dev_info(&instance->pdev->dev,
5386                         "Jbod map is not supported %s %d\n",
5387                         __func__, __LINE__);
5388                 instance->use_seqnum_jbod_fp = false;
5389                 return;
5390         }
5391
5392         if (fusion->pd_seq_sync[0])
5393                 goto skip_alloc;
5394
5395         for (i = 0; i < JBOD_MAPS_COUNT; i++) {
5396                 fusion->pd_seq_sync[i] = dma_alloc_coherent
5397                         (&instance->pdev->dev, pd_seq_map_sz,
5398                         &fusion->pd_seq_phys[i], GFP_KERNEL);
5399                 if (!fusion->pd_seq_sync[i]) {
5400                         dev_err(&instance->pdev->dev,
5401                                 "Failed to allocate memory from %s %d\n",
5402                                 __func__, __LINE__);
5403                         if (i == 1) {
5404                                 dma_free_coherent(&instance->pdev->dev,
5405                                         pd_seq_map_sz, fusion->pd_seq_sync[0],
5406                                         fusion->pd_seq_phys[0]);
5407                                 fusion->pd_seq_sync[0] = NULL;
5408                         }
5409                         instance->use_seqnum_jbod_fp = false;
5410                         return;
5411                 }
5412         }
5413
5414 skip_alloc:
5415         if (!megasas_sync_pd_seq_num(instance, false) &&
5416                 !megasas_sync_pd_seq_num(instance, true))
5417                 instance->use_seqnum_jbod_fp = true;
5418         else
5419                 instance->use_seqnum_jbod_fp = false;
5420 }
5421
5422 static void megasas_setup_reply_map(struct megasas_instance *instance)
5423 {
5424         const struct cpumask *mask;
5425         unsigned int queue, cpu;
5426
5427         for (queue = 0; queue < instance->msix_vectors; queue++) {
5428                 mask = pci_irq_get_affinity(instance->pdev, queue);
5429                 if (!mask)
5430                         goto fallback;
5431
5432                 for_each_cpu(cpu, mask)
5433                         instance->reply_map[cpu] = queue;
5434         }
5435         return;
5436
5437 fallback:
5438         for_each_possible_cpu(cpu)
5439                 instance->reply_map[cpu] = cpu % instance->msix_vectors;
5440 }
5441
5442 /**
5443  * megasas_get_device_list -    Get the PD and LD device list from FW.
5444  * @instance:                   Adapter soft state
5445  * @return:                     Success or failure
5446  *
5447  * Issue DCMDs to Firmware to get the PD and LD list.
5448  * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination
5449  * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list.
5450  */
5451 static
5452 int megasas_get_device_list(struct megasas_instance *instance)
5453 {
5454         memset(instance->pd_list, 0,
5455                (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)));
5456         memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
5457
5458         if (instance->enable_fw_dev_list) {
5459                 if (megasas_host_device_list_query(instance, true))
5460                         return FAILED;
5461         } else {
5462                 if (megasas_get_pd_list(instance) < 0) {
5463                         dev_err(&instance->pdev->dev, "failed to get PD list\n");
5464                         return FAILED;
5465                 }
5466
5467                 if (megasas_ld_list_query(instance,
5468                                           MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) {
5469                         dev_err(&instance->pdev->dev, "failed to get LD list\n");
5470                         return FAILED;
5471                 }
5472         }
5473
5474         return SUCCESS;
5475 }
5476 /**
5477  * megasas_init_fw -    Initializes the FW
5478  * @instance:           Adapter soft state
5479  *
5480  * This is the main function for initializing firmware
5481  */
5482
5483 static int megasas_init_fw(struct megasas_instance *instance)
5484 {
5485         u32 max_sectors_1;
5486         u32 max_sectors_2, tmp_sectors, msix_enable;
5487         u32 scratch_pad_1, scratch_pad_2, scratch_pad_3, status_reg;
5488         resource_size_t base_addr;
5489         struct megasas_ctrl_info *ctrl_info = NULL;
5490         unsigned long bar_list;
5491         int i, j, loop, fw_msix_count = 0;
5492         struct IOV_111 *iovPtr;
5493         struct fusion_context *fusion;
5494         bool do_adp_reset = true;
5495
5496         fusion = instance->ctrl_context;
5497
5498         /* Find first memory bar */
5499         bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
5500         instance->bar = find_first_bit(&bar_list, BITS_PER_LONG);
5501         if (pci_request_selected_regions(instance->pdev, 1<<instance->bar,
5502                                          "megasas: LSI")) {
5503                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "IO memory region busy!\n");
5504                 return -EBUSY;
5505         }
5506
5507         base_addr = pci_resource_start(instance->pdev, instance->bar);
5508         instance->reg_set = ioremap_nocache(base_addr, 8192);
5509
5510         if (!instance->reg_set) {
5511                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to map IO mem\n");
5512                 goto fail_ioremap;
5513         }
5514
5515         if (instance->adapter_type != MFI_SERIES)
5516                 instance->instancet = &megasas_instance_template_fusion;
5517         else {
5518                 switch (instance->pdev->device) {
5519                 case PCI_DEVICE_ID_LSI_SAS1078R:
5520                 case PCI_DEVICE_ID_LSI_SAS1078DE:
5521                         instance->instancet = &megasas_instance_template_ppc;
5522                         break;
5523                 case PCI_DEVICE_ID_LSI_SAS1078GEN2:
5524                 case PCI_DEVICE_ID_LSI_SAS0079GEN2:
5525                         instance->instancet = &megasas_instance_template_gen2;
5526                         break;
5527                 case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
5528                 case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
5529                         instance->instancet = &megasas_instance_template_skinny;
5530                         break;
5531                 case PCI_DEVICE_ID_LSI_SAS1064R:
5532                 case PCI_DEVICE_ID_DELL_PERC5:
5533                 default:
5534                         instance->instancet = &megasas_instance_template_xscale;
5535                         instance->pd_list_not_supported = 1;
5536                         break;
5537                 }
5538         }
5539
5540         if (megasas_transition_to_ready(instance, 0)) {
5541                 if (instance->adapter_type >= INVADER_SERIES) {
5542                         status_reg = instance->instancet->read_fw_status_reg(
5543                                         instance);
5544                         do_adp_reset = status_reg & MFI_RESET_ADAPTER;
5545                 }
5546
5547                 if (do_adp_reset) {
5548                         atomic_set(&instance->fw_reset_no_pci_access, 1);
5549                         instance->instancet->adp_reset
5550                                 (instance, instance->reg_set);
5551                         atomic_set(&instance->fw_reset_no_pci_access, 0);
5552                         dev_info(&instance->pdev->dev,
5553                                  "FW restarted successfully from %s!\n",
5554                                  __func__);
5555
5556                         /*waiting for about 30 second before retry*/
5557                         ssleep(30);
5558
5559                         if (megasas_transition_to_ready(instance, 0))
5560                                 goto fail_ready_state;
5561                 } else {
5562                         goto fail_ready_state;
5563                 }
5564         }
5565
5566         megasas_init_ctrl_params(instance);
5567
5568         if (megasas_set_dma_mask(instance))
5569                 goto fail_ready_state;
5570
5571         if (megasas_alloc_ctrl_mem(instance))
5572                 goto fail_alloc_dma_buf;
5573
5574         if (megasas_alloc_ctrl_dma_buffers(instance))
5575                 goto fail_alloc_dma_buf;
5576
5577         fusion = instance->ctrl_context;
5578
5579         if (instance->adapter_type >= VENTURA_SERIES) {
5580                 scratch_pad_2 =
5581                         megasas_readl(instance,
5582                                       &instance->reg_set->outbound_scratch_pad_2);
5583                 instance->max_raid_mapsize = ((scratch_pad_2 >>
5584                         MR_MAX_RAID_MAP_SIZE_OFFSET_SHIFT) &
5585                         MR_MAX_RAID_MAP_SIZE_MASK);
5586         }
5587
5588         /* Check if MSI-X is supported while in ready state */
5589         msix_enable = (instance->instancet->read_fw_status_reg(instance) &
5590                        0x4000000) >> 0x1a;
5591         if (msix_enable && !msix_disable) {
5592                 int irq_flags = PCI_IRQ_MSIX;
5593
5594                 scratch_pad_1 = megasas_readl
5595                         (instance, &instance->reg_set->outbound_scratch_pad_1);
5596                 /* Check max MSI-X vectors */
5597                 if (fusion) {
5598                         if (instance->adapter_type == THUNDERBOLT_SERIES) {
5599                                 /* Thunderbolt Series*/
5600                                 instance->msix_vectors = (scratch_pad_1
5601                                         & MR_MAX_REPLY_QUEUES_OFFSET) + 1;
5602                                 fw_msix_count = instance->msix_vectors;
5603                         } else {
5604                                 instance->msix_vectors = ((scratch_pad_1
5605                                         & MR_MAX_REPLY_QUEUES_EXT_OFFSET)
5606                                         >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1;
5607
5608                                 /*
5609                                  * For Invader series, > 8 MSI-x vectors
5610                                  * supported by FW/HW implies combined
5611                                  * reply queue mode is enabled.
5612                                  * For Ventura series, > 16 MSI-x vectors
5613                                  * supported by FW/HW implies combined
5614                                  * reply queue mode is enabled.
5615                                  */
5616                                 switch (instance->adapter_type) {
5617                                 case INVADER_SERIES:
5618                                         if (instance->msix_vectors > 8)
5619                                                 instance->msix_combined = true;
5620                                         break;
5621                                 case AERO_SERIES:
5622                                 case VENTURA_SERIES:
5623                                         if (instance->msix_vectors > 16)
5624                                                 instance->msix_combined = true;
5625                                         break;
5626                                 }
5627
5628                                 if (rdpq_enable)
5629                                         instance->is_rdpq = (scratch_pad_1 & MR_RDPQ_MODE_OFFSET) ?
5630                                                                 1 : 0;
5631                                 fw_msix_count = instance->msix_vectors;
5632                                 /* Save 1-15 reply post index address to local memory
5633                                  * Index 0 is already saved from reg offset
5634                                  * MPI2_REPLY_POST_HOST_INDEX_OFFSET
5635                                  */
5636                                 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) {
5637                                         instance->reply_post_host_index_addr[loop] =
5638                                                 (u32 __iomem *)
5639                                                 ((u8 __iomem *)instance->reg_set +
5640                                                 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET
5641                                                 + (loop * 0x10));
5642                                 }
5643                         }
5644                         if (msix_vectors)
5645                                 instance->msix_vectors = min(msix_vectors,
5646                                         instance->msix_vectors);
5647                 } else /* MFI adapters */
5648                         instance->msix_vectors = 1;
5649                 /* Don't bother allocating more MSI-X vectors than cpus */
5650                 instance->msix_vectors = min(instance->msix_vectors,
5651                                              (unsigned int)num_online_cpus());
5652                 if (smp_affinity_enable)
5653                         irq_flags |= PCI_IRQ_AFFINITY;
5654                 i = pci_alloc_irq_vectors(instance->pdev, 1,
5655                                           instance->msix_vectors, irq_flags);
5656                 if (i > 0)
5657                         instance->msix_vectors = i;
5658                 else
5659                         instance->msix_vectors = 0;
5660         }
5661         /*
5662          * MSI-X host index 0 is common for all adapter.
5663          * It is used for all MPT based Adapters.
5664          */
5665         if (instance->msix_combined) {
5666                 instance->reply_post_host_index_addr[0] =
5667                                 (u32 *)((u8 *)instance->reg_set +
5668                                 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET);
5669         } else {
5670                 instance->reply_post_host_index_addr[0] =
5671                         (u32 *)((u8 *)instance->reg_set +
5672                         MPI2_REPLY_POST_HOST_INDEX_OFFSET);
5673         }
5674
5675         if (!instance->msix_vectors) {
5676                 i = pci_alloc_irq_vectors(instance->pdev, 1, 1, PCI_IRQ_LEGACY);
5677                 if (i < 0)
5678                         goto fail_init_adapter;
5679         }
5680
5681         megasas_setup_reply_map(instance);
5682
5683         dev_info(&instance->pdev->dev,
5684                 "firmware supports msix\t: (%d)", fw_msix_count);
5685         dev_info(&instance->pdev->dev,
5686                 "current msix/online cpus\t: (%d/%d)\n",
5687                 instance->msix_vectors, (unsigned int)num_online_cpus());
5688         dev_info(&instance->pdev->dev,
5689                 "RDPQ mode\t: (%s)\n", instance->is_rdpq ? "enabled" : "disabled");
5690
5691         tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
5692                 (unsigned long)instance);
5693
5694         /*
5695          * Below are default value for legacy Firmware.
5696          * non-fusion based controllers
5697          */
5698         instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
5699         instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
5700         /* Get operational params, sge flags, send init cmd to controller */
5701         if (instance->instancet->init_adapter(instance))
5702                 goto fail_init_adapter;
5703
5704         if (instance->adapter_type >= VENTURA_SERIES) {
5705                 scratch_pad_3 =
5706                         megasas_readl(instance,
5707                                       &instance->reg_set->outbound_scratch_pad_3);
5708                 if ((scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK) >=
5709                         MR_DEFAULT_NVME_PAGE_SHIFT)
5710                         instance->nvme_page_size =
5711                                 (1 << (scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK));
5712
5713                 dev_info(&instance->pdev->dev,
5714                          "NVME page size\t: (%d)\n", instance->nvme_page_size);
5715         }
5716
5717         if (instance->msix_vectors ?
5718                 megasas_setup_irqs_msix(instance, 1) :
5719                 megasas_setup_irqs_ioapic(instance))
5720                 goto fail_init_adapter;
5721
5722         instance->instancet->enable_intr(instance);
5723
5724         dev_info(&instance->pdev->dev, "INIT adapter done\n");
5725
5726         megasas_setup_jbod_map(instance);
5727
5728         if (megasas_get_device_list(instance) != SUCCESS) {
5729                 dev_err(&instance->pdev->dev,
5730                         "%s: megasas_get_device_list failed\n",
5731                         __func__);
5732                 goto fail_get_ld_pd_list;
5733         }
5734
5735         /* stream detection initialization */
5736         if (instance->adapter_type >= VENTURA_SERIES) {
5737                 fusion->stream_detect_by_ld =
5738                         kcalloc(MAX_LOGICAL_DRIVES_EXT,
5739                                 sizeof(struct LD_STREAM_DETECT *),
5740                                 GFP_KERNEL);
5741                 if (!fusion->stream_detect_by_ld) {
5742                         dev_err(&instance->pdev->dev,
5743                                 "unable to allocate stream detection for pool of LDs\n");
5744                         goto fail_get_ld_pd_list;
5745                 }
5746                 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i) {
5747                         fusion->stream_detect_by_ld[i] =
5748                                 kzalloc(sizeof(struct LD_STREAM_DETECT),
5749                                 GFP_KERNEL);
5750                         if (!fusion->stream_detect_by_ld[i]) {
5751                                 dev_err(&instance->pdev->dev,
5752                                         "unable to allocate stream detect by LD\n ");
5753                                 for (j = 0; j < i; ++j)
5754                                         kfree(fusion->stream_detect_by_ld[j]);
5755                                 kfree(fusion->stream_detect_by_ld);
5756                                 fusion->stream_detect_by_ld = NULL;
5757                                 goto fail_get_ld_pd_list;
5758                         }
5759                         fusion->stream_detect_by_ld[i]->mru_bit_map
5760                                 = MR_STREAM_BITMAP;
5761                 }
5762         }
5763
5764         /*
5765          * Compute the max allowed sectors per IO: The controller info has two
5766          * limits on max sectors. Driver should use the minimum of these two.
5767          *
5768          * 1 << stripe_sz_ops.min = max sectors per strip
5769          *
5770          * Note that older firmwares ( < FW ver 30) didn't report information
5771          * to calculate max_sectors_1. So the number ended up as zero always.
5772          */
5773         tmp_sectors = 0;
5774         ctrl_info = instance->ctrl_info_buf;
5775
5776         max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
5777                 le16_to_cpu(ctrl_info->max_strips_per_io);
5778         max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size);
5779
5780         tmp_sectors = min_t(u32, max_sectors_1, max_sectors_2);
5781
5782         instance->peerIsPresent = ctrl_info->cluster.peerIsPresent;
5783         instance->passive = ctrl_info->cluster.passive;
5784         memcpy(instance->clusterId, ctrl_info->clusterId, sizeof(instance->clusterId));
5785         instance->UnevenSpanSupport =
5786                 ctrl_info->adapterOperations2.supportUnevenSpans;
5787         if (instance->UnevenSpanSupport) {
5788                 struct fusion_context *fusion = instance->ctrl_context;
5789                 if (MR_ValidateMapInfo(instance, instance->map_id))
5790                         fusion->fast_path_io = 1;
5791                 else
5792                         fusion->fast_path_io = 0;
5793
5794         }
5795         if (ctrl_info->host_interface.SRIOV) {
5796                 instance->requestorId = ctrl_info->iov.requestorId;
5797                 if (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) {
5798                         if (!ctrl_info->adapterOperations2.activePassive)
5799                             instance->PlasmaFW111 = 1;
5800
5801                         dev_info(&instance->pdev->dev, "SR-IOV: firmware type: %s\n",
5802                             instance->PlasmaFW111 ? "1.11" : "new");
5803
5804                         if (instance->PlasmaFW111) {
5805                             iovPtr = (struct IOV_111 *)
5806                                 ((unsigned char *)ctrl_info + IOV_111_OFFSET);
5807                             instance->requestorId = iovPtr->requestorId;
5808                         }
5809                 }
5810                 dev_info(&instance->pdev->dev, "SRIOV: VF requestorId %d\n",
5811                         instance->requestorId);
5812         }
5813
5814         instance->crash_dump_fw_support =
5815                 ctrl_info->adapterOperations3.supportCrashDump;
5816         instance->crash_dump_drv_support =
5817                 (instance->crash_dump_fw_support &&
5818                 instance->crash_dump_buf);
5819         if (instance->crash_dump_drv_support)
5820                 megasas_set_crash_dump_params(instance,
5821                         MR_CRASH_BUF_TURN_OFF);
5822
5823         else {
5824                 if (instance->crash_dump_buf)
5825                         dma_free_coherent(&instance->pdev->dev,
5826                                 CRASH_DMA_BUF_SIZE,
5827                                 instance->crash_dump_buf,
5828                                 instance->crash_dump_h);
5829                 instance->crash_dump_buf = NULL;
5830         }
5831
5832         if (instance->snapdump_wait_time) {
5833                 megasas_get_snapdump_properties(instance);
5834                 dev_info(&instance->pdev->dev, "Snap dump wait time\t: %d\n",
5835                          instance->snapdump_wait_time);
5836         }
5837
5838         dev_info(&instance->pdev->dev,
5839                 "pci id\t\t: (0x%04x)/(0x%04x)/(0x%04x)/(0x%04x)\n",
5840                 le16_to_cpu(ctrl_info->pci.vendor_id),
5841                 le16_to_cpu(ctrl_info->pci.device_id),
5842                 le16_to_cpu(ctrl_info->pci.sub_vendor_id),
5843                 le16_to_cpu(ctrl_info->pci.sub_device_id));
5844         dev_info(&instance->pdev->dev, "unevenspan support      : %s\n",
5845                 instance->UnevenSpanSupport ? "yes" : "no");
5846         dev_info(&instance->pdev->dev, "firmware crash dump     : %s\n",
5847                 instance->crash_dump_drv_support ? "yes" : "no");
5848         dev_info(&instance->pdev->dev, "jbod sync map           : %s\n",
5849                 instance->use_seqnum_jbod_fp ? "yes" : "no");
5850
5851         instance->max_sectors_per_req = instance->max_num_sge *
5852                                                 SGE_BUFFER_SIZE / 512;
5853         if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
5854                 instance->max_sectors_per_req = tmp_sectors;
5855
5856         /* Check for valid throttlequeuedepth module parameter */
5857         if (throttlequeuedepth &&
5858                         throttlequeuedepth <= instance->max_scsi_cmds)
5859                 instance->throttlequeuedepth = throttlequeuedepth;
5860         else
5861                 instance->throttlequeuedepth =
5862                                 MEGASAS_THROTTLE_QUEUE_DEPTH;
5863
5864         if ((resetwaittime < 1) ||
5865             (resetwaittime > MEGASAS_RESET_WAIT_TIME))
5866                 resetwaittime = MEGASAS_RESET_WAIT_TIME;
5867
5868         if ((scmd_timeout < 10) || (scmd_timeout > MEGASAS_DEFAULT_CMD_TIMEOUT))
5869                 scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
5870
5871         /* Launch SR-IOV heartbeat timer */
5872         if (instance->requestorId) {
5873                 if (!megasas_sriov_start_heartbeat(instance, 1)) {
5874                         megasas_start_timer(instance);
5875                 } else {
5876                         instance->skip_heartbeat_timer_del = 1;
5877                         goto fail_get_ld_pd_list;
5878                 }
5879         }
5880
5881         /*
5882          * Create and start watchdog thread which will monitor
5883          * controller state every 1 sec and trigger OCR when
5884          * it enters fault state
5885          */
5886         if (instance->adapter_type != MFI_SERIES)
5887                 if (megasas_fusion_start_watchdog(instance) != SUCCESS)
5888                         goto fail_start_watchdog;
5889
5890         return 0;
5891
5892 fail_start_watchdog:
5893         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
5894                 del_timer_sync(&instance->sriov_heartbeat_timer);
5895 fail_get_ld_pd_list:
5896         instance->instancet->disable_intr(instance);
5897         megasas_destroy_irqs(instance);
5898 fail_init_adapter:
5899         if (instance->msix_vectors)
5900                 pci_free_irq_vectors(instance->pdev);
5901         instance->msix_vectors = 0;
5902 fail_alloc_dma_buf:
5903         megasas_free_ctrl_dma_buffers(instance);
5904         megasas_free_ctrl_mem(instance);
5905 fail_ready_state:
5906         iounmap(instance->reg_set);
5907
5908 fail_ioremap:
5909         pci_release_selected_regions(instance->pdev, 1<<instance->bar);
5910
5911         dev_err(&instance->pdev->dev, "Failed from %s %d\n",
5912                 __func__, __LINE__);
5913         return -EINVAL;
5914 }
5915
5916 /**
5917  * megasas_release_mfi -        Reverses the FW initialization
5918  * @instance:                   Adapter soft state
5919  */
5920 static void megasas_release_mfi(struct megasas_instance *instance)
5921 {
5922         u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
5923
5924         if (instance->reply_queue)
5925                 dma_free_coherent(&instance->pdev->dev, reply_q_sz,
5926                             instance->reply_queue, instance->reply_queue_h);
5927
5928         megasas_free_cmds(instance);
5929
5930         iounmap(instance->reg_set);
5931
5932         pci_release_selected_regions(instance->pdev, 1<<instance->bar);
5933 }
5934
5935 /**
5936  * megasas_get_seq_num -        Gets latest event sequence numbers
5937  * @instance:                   Adapter soft state
5938  * @eli:                        FW event log sequence numbers information
5939  *
5940  * FW maintains a log of all events in a non-volatile area. Upper layers would
5941  * usually find out the latest sequence number of the events, the seq number at
5942  * the boot etc. They would "read" all the events below the latest seq number
5943  * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
5944  * number), they would subsribe to AEN (asynchronous event notification) and
5945  * wait for the events to happen.
5946  */
5947 static int
5948 megasas_get_seq_num(struct megasas_instance *instance,
5949                     struct megasas_evt_log_info *eli)
5950 {
5951         struct megasas_cmd *cmd;
5952         struct megasas_dcmd_frame *dcmd;
5953         struct megasas_evt_log_info *el_info;
5954         dma_addr_t el_info_h = 0;
5955         int ret;
5956
5957         cmd = megasas_get_cmd(instance);
5958
5959         if (!cmd) {
5960                 return -ENOMEM;
5961         }
5962
5963         dcmd = &cmd->frame->dcmd;
5964         el_info = dma_alloc_coherent(&instance->pdev->dev,
5965                                      sizeof(struct megasas_evt_log_info),
5966                                      &el_info_h, GFP_KERNEL);
5967         if (!el_info) {
5968                 megasas_return_cmd(instance, cmd);
5969                 return -ENOMEM;
5970         }
5971
5972         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5973
5974         dcmd->cmd = MFI_CMD_DCMD;
5975         dcmd->cmd_status = 0x0;
5976         dcmd->sge_count = 1;
5977         dcmd->flags = MFI_FRAME_DIR_READ;
5978         dcmd->timeout = 0;
5979         dcmd->pad_0 = 0;
5980         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info));
5981         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO);
5982
5983         megasas_set_dma_settings(instance, dcmd, el_info_h,
5984                                  sizeof(struct megasas_evt_log_info));
5985
5986         ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
5987         if (ret != DCMD_SUCCESS) {
5988                 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
5989                         __func__, __LINE__);
5990                 goto dcmd_failed;
5991         }
5992
5993         /*
5994          * Copy the data back into callers buffer
5995          */
5996         eli->newest_seq_num = el_info->newest_seq_num;
5997         eli->oldest_seq_num = el_info->oldest_seq_num;
5998         eli->clear_seq_num = el_info->clear_seq_num;
5999         eli->shutdown_seq_num = el_info->shutdown_seq_num;
6000         eli->boot_seq_num = el_info->boot_seq_num;
6001
6002 dcmd_failed:
6003         dma_free_coherent(&instance->pdev->dev,
6004                         sizeof(struct megasas_evt_log_info),
6005                         el_info, el_info_h);
6006
6007         megasas_return_cmd(instance, cmd);
6008
6009         return ret;
6010 }
6011
6012 /**
6013  * megasas_register_aen -       Registers for asynchronous event notification
6014  * @instance:                   Adapter soft state
6015  * @seq_num:                    The starting sequence number
6016  * @class_locale:               Class of the event
6017  *
6018  * This function subscribes for AEN for events beyond the @seq_num. It requests
6019  * to be notified if and only if the event is of type @class_locale
6020  */
6021 static int
6022 megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
6023                      u32 class_locale_word)
6024 {
6025         int ret_val;
6026         struct megasas_cmd *cmd;
6027         struct megasas_dcmd_frame *dcmd;
6028         union megasas_evt_class_locale curr_aen;
6029         union megasas_evt_class_locale prev_aen;
6030
6031         /*
6032          * If there an AEN pending already (aen_cmd), check if the
6033          * class_locale of that pending AEN is inclusive of the new
6034          * AEN request we currently have. If it is, then we don't have
6035          * to do anything. In other words, whichever events the current
6036          * AEN request is subscribing to, have already been subscribed
6037          * to.
6038          *
6039          * If the old_cmd is _not_ inclusive, then we have to abort
6040          * that command, form a class_locale that is superset of both
6041          * old and current and re-issue to the FW
6042          */
6043
6044         curr_aen.word = class_locale_word;
6045
6046         if (instance->aen_cmd) {
6047
6048                 prev_aen.word =
6049                         le32_to_cpu(instance->aen_cmd->frame->dcmd.mbox.w[1]);
6050
6051                 if ((curr_aen.members.class < MFI_EVT_CLASS_DEBUG) ||
6052                     (curr_aen.members.class > MFI_EVT_CLASS_DEAD)) {
6053                         dev_info(&instance->pdev->dev,
6054                                  "%s %d out of range class %d send by application\n",
6055                                  __func__, __LINE__, curr_aen.members.class);
6056                         return 0;
6057                 }
6058
6059                 /*
6060                  * A class whose enum value is smaller is inclusive of all
6061                  * higher values. If a PROGRESS (= -1) was previously
6062                  * registered, then a new registration requests for higher
6063                  * classes need not be sent to FW. They are automatically
6064                  * included.
6065                  *
6066                  * Locale numbers don't have such hierarchy. They are bitmap
6067                  * values
6068                  */
6069                 if ((prev_aen.members.class <= curr_aen.members.class) &&
6070                     !((prev_aen.members.locale & curr_aen.members.locale) ^
6071                       curr_aen.members.locale)) {
6072                         /*
6073                          * Previously issued event registration includes
6074                          * current request. Nothing to do.
6075                          */
6076                         return 0;
6077                 } else {
6078                         curr_aen.members.locale |= prev_aen.members.locale;
6079
6080                         if (prev_aen.members.class < curr_aen.members.class)
6081                                 curr_aen.members.class = prev_aen.members.class;
6082
6083                         instance->aen_cmd->abort_aen = 1;
6084                         ret_val = megasas_issue_blocked_abort_cmd(instance,
6085                                                                   instance->
6086                                                                   aen_cmd, 30);
6087
6088                         if (ret_val) {
6089                                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to abort "
6090                                        "previous AEN command\n");
6091                                 return ret_val;
6092                         }
6093                 }
6094         }
6095
6096         cmd = megasas_get_cmd(instance);
6097
6098         if (!cmd)
6099                 return -ENOMEM;
6100
6101         dcmd = &cmd->frame->dcmd;
6102
6103         memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
6104
6105         /*
6106          * Prepare DCMD for aen registration
6107          */
6108         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6109
6110         dcmd->cmd = MFI_CMD_DCMD;
6111         dcmd->cmd_status = 0x0;
6112         dcmd->sge_count = 1;
6113         dcmd->flags = MFI_FRAME_DIR_READ;
6114         dcmd->timeout = 0;
6115         dcmd->pad_0 = 0;
6116         dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail));
6117         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT);
6118         dcmd->mbox.w[0] = cpu_to_le32(seq_num);
6119         instance->last_seq_num = seq_num;
6120         dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word);
6121
6122         megasas_set_dma_settings(instance, dcmd, instance->evt_detail_h,
6123                                  sizeof(struct megasas_evt_detail));
6124
6125         if (instance->aen_cmd != NULL) {
6126                 megasas_return_cmd(instance, cmd);
6127                 return 0;
6128         }
6129
6130         /*
6131          * Store reference to the cmd used to register for AEN. When an
6132          * application wants us to register for AEN, we have to abort this
6133          * cmd and re-register with a new EVENT LOCALE supplied by that app
6134          */
6135         instance->aen_cmd = cmd;
6136
6137         /*
6138          * Issue the aen registration frame
6139          */
6140         instance->instancet->issue_dcmd(instance, cmd);
6141
6142         return 0;
6143 }
6144
6145 /* megasas_get_target_prop - Send DCMD with below details to firmware.
6146  *
6147  * This DCMD will fetch few properties of LD/system PD defined
6148  * in MR_TARGET_DEV_PROPERTIES. eg. Queue Depth, MDTS value.
6149  *
6150  * DCMD send by drivers whenever new target is added to the OS.
6151  *
6152  * dcmd.opcode         - MR_DCMD_DEV_GET_TARGET_PROP
6153  * dcmd.mbox.b[0]      - DCMD is to be fired for LD or system PD.
6154  *                       0 = system PD, 1 = LD.
6155  * dcmd.mbox.s[1]      - TargetID for LD/system PD.
6156  * dcmd.sge IN         - Pointer to return MR_TARGET_DEV_PROPERTIES.
6157  *
6158  * @instance:           Adapter soft state
6159  * @sdev:               OS provided scsi device
6160  *
6161  * Returns 0 on success non-zero on failure.
6162  */
6163 int
6164 megasas_get_target_prop(struct megasas_instance *instance,
6165                         struct scsi_device *sdev)
6166 {
6167         int ret;
6168         struct megasas_cmd *cmd;
6169         struct megasas_dcmd_frame *dcmd;
6170         u16 targetId = (sdev->channel % 2) + sdev->id;
6171
6172         cmd = megasas_get_cmd(instance);
6173
6174         if (!cmd) {
6175                 dev_err(&instance->pdev->dev,
6176                         "Failed to get cmd %s\n", __func__);
6177                 return -ENOMEM;
6178         }
6179
6180         dcmd = &cmd->frame->dcmd;
6181
6182         memset(instance->tgt_prop, 0, sizeof(*instance->tgt_prop));
6183         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6184         dcmd->mbox.b[0] = MEGASAS_IS_LOGICAL(sdev);
6185
6186         dcmd->mbox.s[1] = cpu_to_le16(targetId);
6187         dcmd->cmd = MFI_CMD_DCMD;
6188         dcmd->cmd_status = 0xFF;
6189         dcmd->sge_count = 1;
6190         dcmd->flags = MFI_FRAME_DIR_READ;
6191         dcmd->timeout = 0;
6192         dcmd->pad_0 = 0;
6193         dcmd->data_xfer_len =
6194                 cpu_to_le32(sizeof(struct MR_TARGET_PROPERTIES));
6195         dcmd->opcode = cpu_to_le32(MR_DCMD_DRV_GET_TARGET_PROP);
6196
6197         megasas_set_dma_settings(instance, dcmd, instance->tgt_prop_h,
6198                                  sizeof(struct MR_TARGET_PROPERTIES));
6199
6200         if ((instance->adapter_type != MFI_SERIES) &&
6201             !instance->mask_interrupts)
6202                 ret = megasas_issue_blocked_cmd(instance,
6203                                                 cmd, MFI_IO_TIMEOUT_SECS);
6204         else
6205                 ret = megasas_issue_polled(instance, cmd);
6206
6207         switch (ret) {
6208         case DCMD_TIMEOUT:
6209                 switch (dcmd_timeout_ocr_possible(instance)) {
6210                 case INITIATE_OCR:
6211                         cmd->flags |= DRV_DCMD_SKIP_REFIRE;
6212                         megasas_reset_fusion(instance->host,
6213                                              MFI_IO_TIMEOUT_OCR);
6214                         break;
6215                 case KILL_ADAPTER:
6216                         megaraid_sas_kill_hba(instance);
6217                         break;
6218                 case IGNORE_TIMEOUT:
6219                         dev_info(&instance->pdev->dev,
6220                                  "Ignore DCMD timeout: %s %d\n",
6221                                  __func__, __LINE__);
6222                         break;
6223                 }
6224                 break;
6225
6226         default:
6227                 megasas_return_cmd(instance, cmd);
6228         }
6229         if (ret != DCMD_SUCCESS)
6230                 dev_err(&instance->pdev->dev,
6231                         "return from %s %d return value %d\n",
6232                         __func__, __LINE__, ret);
6233
6234         return ret;
6235 }
6236
6237 /**
6238  * megasas_start_aen -  Subscribes to AEN during driver load time
6239  * @instance:           Adapter soft state
6240  */
6241 static int megasas_start_aen(struct megasas_instance *instance)
6242 {
6243         struct megasas_evt_log_info eli;
6244         union megasas_evt_class_locale class_locale;
6245
6246         /*
6247          * Get the latest sequence number from FW
6248          */
6249         memset(&eli, 0, sizeof(eli));
6250
6251         if (megasas_get_seq_num(instance, &eli))
6252                 return -1;
6253
6254         /*
6255          * Register AEN with FW for latest sequence number plus 1
6256          */
6257         class_locale.members.reserved = 0;
6258         class_locale.members.locale = MR_EVT_LOCALE_ALL;
6259         class_locale.members.class = MR_EVT_CLASS_DEBUG;
6260
6261         return megasas_register_aen(instance,
6262                         le32_to_cpu(eli.newest_seq_num) + 1,
6263                         class_locale.word);
6264 }
6265
6266 /**
6267  * megasas_io_attach -  Attaches this driver to SCSI mid-layer
6268  * @instance:           Adapter soft state
6269  */
6270 static int megasas_io_attach(struct megasas_instance *instance)
6271 {
6272         struct Scsi_Host *host = instance->host;
6273
6274         /*
6275          * Export parameters required by SCSI mid-layer
6276          */
6277         host->unique_id = instance->unique_id;
6278         host->can_queue = instance->max_scsi_cmds;
6279         host->this_id = instance->init_id;
6280         host->sg_tablesize = instance->max_num_sge;
6281
6282         if (instance->fw_support_ieee)
6283                 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE;
6284
6285         /*
6286          * Check if the module parameter value for max_sectors can be used
6287          */
6288         if (max_sectors && max_sectors < instance->max_sectors_per_req)
6289                 instance->max_sectors_per_req = max_sectors;
6290         else {
6291                 if (max_sectors) {
6292                         if (((instance->pdev->device ==
6293                                 PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
6294                                 (instance->pdev->device ==
6295                                 PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
6296                                 (max_sectors <= MEGASAS_MAX_SECTORS)) {
6297                                 instance->max_sectors_per_req = max_sectors;
6298                         } else {
6299                         dev_info(&instance->pdev->dev, "max_sectors should be > 0"
6300                                 "and <= %d (or < 1MB for GEN2 controller)\n",
6301                                 instance->max_sectors_per_req);
6302                         }
6303                 }
6304         }
6305
6306         host->max_sectors = instance->max_sectors_per_req;
6307         host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
6308         host->max_channel = MEGASAS_MAX_CHANNELS - 1;
6309         host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
6310         host->max_lun = MEGASAS_MAX_LUN;
6311         host->max_cmd_len = 16;
6312
6313         /*
6314          * Notify the mid-layer about the new controller
6315          */
6316         if (scsi_add_host(host, &instance->pdev->dev)) {
6317                 dev_err(&instance->pdev->dev,
6318                         "Failed to add host from %s %d\n",
6319                         __func__, __LINE__);
6320                 return -ENODEV;
6321         }
6322
6323         return 0;
6324 }
6325
6326 /**
6327  * megasas_set_dma_mask -       Set DMA mask for supported controllers
6328  *
6329  * @instance:           Adapter soft state
6330  * Description:
6331  *
6332  * For Ventura, driver/FW will operate in 63bit DMA addresses.
6333  *
6334  * For invader-
6335  *      By default, driver/FW will operate in 32bit DMA addresses
6336  *      for consistent DMA mapping but if 32 bit consistent
6337  *      DMA mask fails, driver will try with 63 bit consistent
6338  *      mask provided FW is true 63bit DMA capable
6339  *
6340  * For older controllers(Thunderbolt and MFI based adapters)-
6341  *      driver/FW will operate in 32 bit consistent DMA addresses.
6342  */
6343 static int
6344 megasas_set_dma_mask(struct megasas_instance *instance)
6345 {
6346         u64 consistent_mask;
6347         struct pci_dev *pdev;
6348         u32 scratch_pad_1;
6349
6350         pdev = instance->pdev;
6351         consistent_mask = (instance->adapter_type >= VENTURA_SERIES) ?
6352                                 DMA_BIT_MASK(63) : DMA_BIT_MASK(32);
6353
6354         if (IS_DMA64) {
6355                 if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(63)) &&
6356                     dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
6357                         goto fail_set_dma_mask;
6358
6359                 if ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) &&
6360                     (dma_set_coherent_mask(&pdev->dev, consistent_mask) &&
6361                      dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))) {
6362                         /*
6363                          * If 32 bit DMA mask fails, then try for 64 bit mask
6364                          * for FW capable of handling 64 bit DMA.
6365                          */
6366                         scratch_pad_1 = megasas_readl
6367                                 (instance, &instance->reg_set->outbound_scratch_pad_1);
6368
6369                         if (!(scratch_pad_1 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET))
6370                                 goto fail_set_dma_mask;
6371                         else if (dma_set_mask_and_coherent(&pdev->dev,
6372                                                            DMA_BIT_MASK(63)))
6373                                 goto fail_set_dma_mask;
6374                 }
6375         } else if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
6376                 goto fail_set_dma_mask;
6377
6378         if (pdev->dev.coherent_dma_mask == DMA_BIT_MASK(32))
6379                 instance->consistent_mask_64bit = false;
6380         else
6381                 instance->consistent_mask_64bit = true;
6382
6383         dev_info(&pdev->dev, "%s bit DMA mask and %s bit consistent mask\n",
6384                  ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) ? "63" : "32"),
6385                  (instance->consistent_mask_64bit ? "63" : "32"));
6386
6387         return 0;
6388
6389 fail_set_dma_mask:
6390         dev_err(&pdev->dev, "Failed to set DMA mask\n");
6391         return -1;
6392
6393 }
6394
6395 /*
6396  * megasas_set_adapter_type -   Set adapter type.
6397  *                              Supported controllers can be divided in
6398  *                              different categories-
6399  *                                      enum MR_ADAPTER_TYPE {
6400  *                                              MFI_SERIES = 1,
6401  *                                              THUNDERBOLT_SERIES = 2,
6402  *                                              INVADER_SERIES = 3,
6403  *                                              VENTURA_SERIES = 4,
6404  *                                              AERO_SERIES = 5,
6405  *                                      };
6406  * @instance:                   Adapter soft state
6407  * return:                      void
6408  */
6409 static inline void megasas_set_adapter_type(struct megasas_instance *instance)
6410 {
6411         if ((instance->pdev->vendor == PCI_VENDOR_ID_DELL) &&
6412             (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5)) {
6413                 instance->adapter_type = MFI_SERIES;
6414         } else {
6415                 switch (instance->pdev->device) {
6416                 case PCI_DEVICE_ID_LSI_AERO_10E1:
6417                 case PCI_DEVICE_ID_LSI_AERO_10E2:
6418                 case PCI_DEVICE_ID_LSI_AERO_10E5:
6419                 case PCI_DEVICE_ID_LSI_AERO_10E6:
6420                         instance->adapter_type = AERO_SERIES;
6421                         break;
6422                 case PCI_DEVICE_ID_LSI_VENTURA:
6423                 case PCI_DEVICE_ID_LSI_CRUSADER:
6424                 case PCI_DEVICE_ID_LSI_HARPOON:
6425                 case PCI_DEVICE_ID_LSI_TOMCAT:
6426                 case PCI_DEVICE_ID_LSI_VENTURA_4PORT:
6427                 case PCI_DEVICE_ID_LSI_CRUSADER_4PORT:
6428                         instance->adapter_type = VENTURA_SERIES;
6429                         break;
6430                 case PCI_DEVICE_ID_LSI_FUSION:
6431                 case PCI_DEVICE_ID_LSI_PLASMA:
6432                         instance->adapter_type = THUNDERBOLT_SERIES;
6433                         break;
6434                 case PCI_DEVICE_ID_LSI_INVADER:
6435                 case PCI_DEVICE_ID_LSI_INTRUDER:
6436                 case PCI_DEVICE_ID_LSI_INTRUDER_24:
6437                 case PCI_DEVICE_ID_LSI_CUTLASS_52:
6438                 case PCI_DEVICE_ID_LSI_CUTLASS_53:
6439                 case PCI_DEVICE_ID_LSI_FURY:
6440                         instance->adapter_type = INVADER_SERIES;
6441                         break;
6442                 default: /* For all other supported controllers */
6443                         instance->adapter_type = MFI_SERIES;
6444                         break;
6445                 }
6446         }
6447 }
6448
6449 static inline int megasas_alloc_mfi_ctrl_mem(struct megasas_instance *instance)
6450 {
6451         instance->producer = dma_alloc_coherent(&instance->pdev->dev,
6452                         sizeof(u32), &instance->producer_h, GFP_KERNEL);
6453         instance->consumer = dma_alloc_coherent(&instance->pdev->dev,
6454                         sizeof(u32), &instance->consumer_h, GFP_KERNEL);
6455
6456         if (!instance->producer || !instance->consumer) {
6457                 dev_err(&instance->pdev->dev,
6458                         "Failed to allocate memory for producer, consumer\n");
6459                 return -1;
6460         }
6461
6462         *instance->producer = 0;
6463         *instance->consumer = 0;
6464         return 0;
6465 }
6466
6467 /**
6468  * megasas_alloc_ctrl_mem -     Allocate per controller memory for core data
6469  *                              structures which are not common across MFI
6470  *                              adapters and fusion adapters.
6471  *                              For MFI based adapters, allocate producer and
6472  *                              consumer buffers. For fusion adapters, allocate
6473  *                              memory for fusion context.
6474  * @instance:                   Adapter soft state
6475  * return:                      0 for SUCCESS
6476  */
6477 static int megasas_alloc_ctrl_mem(struct megasas_instance *instance)
6478 {
6479         instance->reply_map = kcalloc(nr_cpu_ids, sizeof(unsigned int),
6480                                       GFP_KERNEL);
6481         if (!instance->reply_map)
6482                 return -ENOMEM;
6483
6484         switch (instance->adapter_type) {
6485         case MFI_SERIES:
6486                 if (megasas_alloc_mfi_ctrl_mem(instance))
6487                         goto fail;
6488                 break;
6489         case AERO_SERIES:
6490         case VENTURA_SERIES:
6491         case THUNDERBOLT_SERIES:
6492         case INVADER_SERIES:
6493                 if (megasas_alloc_fusion_context(instance))
6494                         goto fail;
6495                 break;
6496         }
6497
6498         return 0;
6499  fail:
6500         kfree(instance->reply_map);
6501         instance->reply_map = NULL;
6502         return -ENOMEM;
6503 }
6504
6505 /*
6506  * megasas_free_ctrl_mem -      Free fusion context for fusion adapters and
6507  *                              producer, consumer buffers for MFI adapters
6508  *
6509  * @instance -                  Adapter soft instance
6510  *
6511  */
6512 static inline void megasas_free_ctrl_mem(struct megasas_instance *instance)
6513 {
6514         kfree(instance->reply_map);
6515         if (instance->adapter_type == MFI_SERIES) {
6516                 if (instance->producer)
6517                         dma_free_coherent(&instance->pdev->dev, sizeof(u32),
6518                                             instance->producer,
6519                                             instance->producer_h);
6520                 if (instance->consumer)
6521                         dma_free_coherent(&instance->pdev->dev, sizeof(u32),
6522                                             instance->consumer,
6523                                             instance->consumer_h);
6524         } else {
6525                 megasas_free_fusion_context(instance);
6526         }
6527 }
6528
6529 /**
6530  * megasas_alloc_ctrl_dma_buffers -     Allocate consistent DMA buffers during
6531  *                                      driver load time
6532  *
6533  * @instance-                           Adapter soft instance
6534  * @return-                             O for SUCCESS
6535  */
6536 static inline
6537 int megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance)
6538 {
6539         struct pci_dev *pdev = instance->pdev;
6540         struct fusion_context *fusion = instance->ctrl_context;
6541
6542         instance->evt_detail = dma_alloc_coherent(&pdev->dev,
6543                         sizeof(struct megasas_evt_detail),
6544                         &instance->evt_detail_h, GFP_KERNEL);
6545
6546         if (!instance->evt_detail) {
6547                 dev_err(&instance->pdev->dev,
6548                         "Failed to allocate event detail buffer\n");
6549                 return -ENOMEM;
6550         }
6551
6552         if (fusion) {
6553                 fusion->ioc_init_request =
6554                         dma_alloc_coherent(&pdev->dev,
6555                                            sizeof(struct MPI2_IOC_INIT_REQUEST),
6556                                            &fusion->ioc_init_request_phys,
6557                                            GFP_KERNEL);
6558
6559                 if (!fusion->ioc_init_request) {
6560                         dev_err(&pdev->dev,
6561                                 "Failed to allocate PD list buffer\n");
6562                         return -ENOMEM;
6563                 }
6564
6565                 instance->snapdump_prop = dma_alloc_coherent(&pdev->dev,
6566                                 sizeof(struct MR_SNAPDUMP_PROPERTIES),
6567                                 &instance->snapdump_prop_h, GFP_KERNEL);
6568
6569                 if (!instance->snapdump_prop)
6570                         dev_err(&pdev->dev,
6571                                 "Failed to allocate snapdump properties buffer\n");
6572
6573                 instance->host_device_list_buf = dma_alloc_coherent(&pdev->dev,
6574                                                         HOST_DEVICE_LIST_SZ,
6575                                                         &instance->host_device_list_buf_h,
6576                                                         GFP_KERNEL);
6577
6578                 if (!instance->host_device_list_buf) {
6579                         dev_err(&pdev->dev,
6580                                 "Failed to allocate targetid list buffer\n");
6581                         return -ENOMEM;
6582                 }
6583
6584         }
6585
6586         instance->pd_list_buf =
6587                 dma_alloc_coherent(&pdev->dev,
6588                                      MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
6589                                      &instance->pd_list_buf_h, GFP_KERNEL);
6590
6591         if (!instance->pd_list_buf) {
6592                 dev_err(&pdev->dev, "Failed to allocate PD list buffer\n");
6593                 return -ENOMEM;
6594         }
6595
6596         instance->ctrl_info_buf =
6597                 dma_alloc_coherent(&pdev->dev,
6598                                      sizeof(struct megasas_ctrl_info),
6599                                      &instance->ctrl_info_buf_h, GFP_KERNEL);
6600
6601         if (!instance->ctrl_info_buf) {
6602                 dev_err(&pdev->dev,
6603                         "Failed to allocate controller info buffer\n");
6604                 return -ENOMEM;
6605         }
6606
6607         instance->ld_list_buf =
6608                 dma_alloc_coherent(&pdev->dev,
6609                                      sizeof(struct MR_LD_LIST),
6610                                      &instance->ld_list_buf_h, GFP_KERNEL);
6611
6612         if (!instance->ld_list_buf) {
6613                 dev_err(&pdev->dev, "Failed to allocate LD list buffer\n");
6614                 return -ENOMEM;
6615         }
6616
6617         instance->ld_targetid_list_buf =
6618                 dma_alloc_coherent(&pdev->dev,
6619                                 sizeof(struct MR_LD_TARGETID_LIST),
6620                                 &instance->ld_targetid_list_buf_h, GFP_KERNEL);
6621
6622         if (!instance->ld_targetid_list_buf) {
6623                 dev_err(&pdev->dev,
6624                         "Failed to allocate LD targetid list buffer\n");
6625                 return -ENOMEM;
6626         }
6627
6628         if (!reset_devices) {
6629                 instance->system_info_buf =
6630                         dma_alloc_coherent(&pdev->dev,
6631                                         sizeof(struct MR_DRV_SYSTEM_INFO),
6632                                         &instance->system_info_h, GFP_KERNEL);
6633                 instance->pd_info =
6634                         dma_alloc_coherent(&pdev->dev,
6635                                         sizeof(struct MR_PD_INFO),
6636                                         &instance->pd_info_h, GFP_KERNEL);
6637                 instance->tgt_prop =
6638                         dma_alloc_coherent(&pdev->dev,
6639                                         sizeof(struct MR_TARGET_PROPERTIES),
6640                                         &instance->tgt_prop_h, GFP_KERNEL);
6641                 instance->crash_dump_buf =
6642                         dma_alloc_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE,
6643                                         &instance->crash_dump_h, GFP_KERNEL);
6644
6645                 if (!instance->system_info_buf)
6646                         dev_err(&instance->pdev->dev,
6647                                 "Failed to allocate system info buffer\n");
6648
6649                 if (!instance->pd_info)
6650                         dev_err(&instance->pdev->dev,
6651                                 "Failed to allocate pd_info buffer\n");
6652
6653                 if (!instance->tgt_prop)
6654                         dev_err(&instance->pdev->dev,
6655                                 "Failed to allocate tgt_prop buffer\n");
6656
6657                 if (!instance->crash_dump_buf)
6658                         dev_err(&instance->pdev->dev,
6659                                 "Failed to allocate crash dump buffer\n");
6660         }
6661
6662         return 0;
6663 }
6664
6665 /*
6666  * megasas_free_ctrl_dma_buffers -      Free consistent DMA buffers allocated
6667  *                                      during driver load time
6668  *
6669  * @instance-                           Adapter soft instance
6670  *
6671  */
6672 static inline
6673 void megasas_free_ctrl_dma_buffers(struct megasas_instance *instance)
6674 {
6675         struct pci_dev *pdev = instance->pdev;
6676         struct fusion_context *fusion = instance->ctrl_context;
6677
6678         if (instance->evt_detail)
6679                 dma_free_coherent(&pdev->dev, sizeof(struct megasas_evt_detail),
6680                                     instance->evt_detail,
6681                                     instance->evt_detail_h);
6682
6683         if (fusion && fusion->ioc_init_request)
6684                 dma_free_coherent(&pdev->dev,
6685                                   sizeof(struct MPI2_IOC_INIT_REQUEST),
6686                                   fusion->ioc_init_request,
6687                                   fusion->ioc_init_request_phys);
6688
6689         if (instance->pd_list_buf)
6690                 dma_free_coherent(&pdev->dev,
6691                                     MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
6692                                     instance->pd_list_buf,
6693                                     instance->pd_list_buf_h);
6694
6695         if (instance->ld_list_buf)
6696                 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_LIST),
6697                                     instance->ld_list_buf,
6698                                     instance->ld_list_buf_h);
6699
6700         if (instance->ld_targetid_list_buf)
6701                 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_TARGETID_LIST),
6702                                     instance->ld_targetid_list_buf,
6703                                     instance->ld_targetid_list_buf_h);
6704
6705         if (instance->ctrl_info_buf)
6706                 dma_free_coherent(&pdev->dev, sizeof(struct megasas_ctrl_info),
6707                                     instance->ctrl_info_buf,
6708                                     instance->ctrl_info_buf_h);
6709
6710         if (instance->system_info_buf)
6711                 dma_free_coherent(&pdev->dev, sizeof(struct MR_DRV_SYSTEM_INFO),
6712                                     instance->system_info_buf,
6713                                     instance->system_info_h);
6714
6715         if (instance->pd_info)
6716                 dma_free_coherent(&pdev->dev, sizeof(struct MR_PD_INFO),
6717                                     instance->pd_info, instance->pd_info_h);
6718
6719         if (instance->tgt_prop)
6720                 dma_free_coherent(&pdev->dev, sizeof(struct MR_TARGET_PROPERTIES),
6721                                     instance->tgt_prop, instance->tgt_prop_h);
6722
6723         if (instance->crash_dump_buf)
6724                 dma_free_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE,
6725                                     instance->crash_dump_buf,
6726                                     instance->crash_dump_h);
6727
6728         if (instance->snapdump_prop)
6729                 dma_free_coherent(&pdev->dev,
6730                                   sizeof(struct MR_SNAPDUMP_PROPERTIES),
6731                                   instance->snapdump_prop,
6732                                   instance->snapdump_prop_h);
6733
6734         if (instance->host_device_list_buf)
6735                 dma_free_coherent(&pdev->dev,
6736                                   HOST_DEVICE_LIST_SZ,
6737                                   instance->host_device_list_buf,
6738                                   instance->host_device_list_buf_h);
6739
6740 }
6741
6742 /*
6743  * megasas_init_ctrl_params -           Initialize controller's instance
6744  *                                      parameters before FW init
6745  * @instance -                          Adapter soft instance
6746  * @return -                            void
6747  */
6748 static inline void megasas_init_ctrl_params(struct megasas_instance *instance)
6749 {
6750         instance->fw_crash_state = UNAVAILABLE;
6751
6752         megasas_poll_wait_aen = 0;
6753         instance->issuepend_done = 1;
6754         atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
6755
6756         /*
6757          * Initialize locks and queues
6758          */
6759         INIT_LIST_HEAD(&instance->cmd_pool);
6760         INIT_LIST_HEAD(&instance->internal_reset_pending_q);
6761
6762         atomic_set(&instance->fw_outstanding, 0);
6763
6764         init_waitqueue_head(&instance->int_cmd_wait_q);
6765         init_waitqueue_head(&instance->abort_cmd_wait_q);
6766
6767         spin_lock_init(&instance->crashdump_lock);
6768         spin_lock_init(&instance->mfi_pool_lock);
6769         spin_lock_init(&instance->hba_lock);
6770         spin_lock_init(&instance->stream_lock);
6771         spin_lock_init(&instance->completion_lock);
6772
6773         mutex_init(&instance->reset_mutex);
6774
6775         if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
6776             (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY))
6777                 instance->flag_ieee = 1;
6778
6779         megasas_dbg_lvl = 0;
6780         instance->flag = 0;
6781         instance->unload = 1;
6782         instance->last_time = 0;
6783         instance->disableOnlineCtrlReset = 1;
6784         instance->UnevenSpanSupport = 0;
6785
6786         if (instance->adapter_type != MFI_SERIES)
6787                 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
6788         else
6789                 INIT_WORK(&instance->work_init, process_fw_state_change_wq);
6790 }
6791
6792 /**
6793  * megasas_probe_one -  PCI hotplug entry point
6794  * @pdev:               PCI device structure
6795  * @id:                 PCI ids of supported hotplugged adapter
6796  */
6797 static int megasas_probe_one(struct pci_dev *pdev,
6798                              const struct pci_device_id *id)
6799 {
6800         int rval, pos;
6801         struct Scsi_Host *host;
6802         struct megasas_instance *instance;
6803         u16 control = 0;
6804
6805         switch (pdev->device) {
6806         case PCI_DEVICE_ID_LSI_AERO_10E1:
6807         case PCI_DEVICE_ID_LSI_AERO_10E5:
6808                 dev_info(&pdev->dev, "Adapter is in configurable secure mode\n");
6809                 break;
6810         }
6811
6812         /* Reset MSI-X in the kdump kernel */
6813         if (reset_devices) {
6814                 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
6815                 if (pos) {
6816                         pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS,
6817                                              &control);
6818                         if (control & PCI_MSIX_FLAGS_ENABLE) {
6819                                 dev_info(&pdev->dev, "resetting MSI-X\n");
6820                                 pci_write_config_word(pdev,
6821                                                       pos + PCI_MSIX_FLAGS,
6822                                                       control &
6823                                                       ~PCI_MSIX_FLAGS_ENABLE);
6824                         }
6825                 }
6826         }
6827
6828         /*
6829          * PCI prepping: enable device set bus mastering and dma mask
6830          */
6831         rval = pci_enable_device_mem(pdev);
6832
6833         if (rval) {
6834                 return rval;
6835         }
6836
6837         pci_set_master(pdev);
6838
6839         host = scsi_host_alloc(&megasas_template,
6840                                sizeof(struct megasas_instance));
6841
6842         if (!host) {
6843                 dev_printk(KERN_DEBUG, &pdev->dev, "scsi_host_alloc failed\n");
6844                 goto fail_alloc_instance;
6845         }
6846
6847         instance = (struct megasas_instance *)host->hostdata;
6848         memset(instance, 0, sizeof(*instance));
6849         atomic_set(&instance->fw_reset_no_pci_access, 0);
6850
6851         /*
6852          * Initialize PCI related and misc parameters
6853          */
6854         instance->pdev = pdev;
6855         instance->host = host;
6856         instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
6857         instance->init_id = MEGASAS_DEFAULT_INIT_ID;
6858
6859         megasas_set_adapter_type(instance);
6860
6861         /*
6862          * Initialize MFI Firmware
6863          */
6864         if (megasas_init_fw(instance))
6865                 goto fail_init_mfi;
6866
6867         if (instance->requestorId) {
6868                 if (instance->PlasmaFW111) {
6869                         instance->vf_affiliation_111 =
6870                                 dma_alloc_coherent(&pdev->dev,
6871                                         sizeof(struct MR_LD_VF_AFFILIATION_111),
6872                                         &instance->vf_affiliation_111_h,
6873                                         GFP_KERNEL);
6874                         if (!instance->vf_affiliation_111)
6875                                 dev_warn(&pdev->dev, "Can't allocate "
6876                                        "memory for VF affiliation buffer\n");
6877                 } else {
6878                         instance->vf_affiliation =
6879                                 dma_alloc_coherent(&pdev->dev,
6880                                         (MAX_LOGICAL_DRIVES + 1) *
6881                                         sizeof(struct MR_LD_VF_AFFILIATION),
6882                                         &instance->vf_affiliation_h,
6883                                         GFP_KERNEL);
6884                         if (!instance->vf_affiliation)
6885                                 dev_warn(&pdev->dev, "Can't allocate "
6886                                        "memory for VF affiliation buffer\n");
6887                 }
6888         }
6889
6890         /*
6891          * Store instance in PCI softstate
6892          */
6893         pci_set_drvdata(pdev, instance);
6894
6895         /*
6896          * Add this controller to megasas_mgmt_info structure so that it
6897          * can be exported to management applications
6898          */
6899         megasas_mgmt_info.count++;
6900         megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
6901         megasas_mgmt_info.max_index++;
6902
6903         /*
6904          * Register with SCSI mid-layer
6905          */
6906         if (megasas_io_attach(instance))
6907                 goto fail_io_attach;
6908
6909         instance->unload = 0;
6910         /*
6911          * Trigger SCSI to scan our drives
6912          */
6913         if (!instance->enable_fw_dev_list ||
6914             (instance->host_device_list_buf->count > 0))
6915                 scsi_scan_host(host);
6916
6917         /*
6918          * Initiate AEN (Asynchronous Event Notification)
6919          */
6920         if (megasas_start_aen(instance)) {
6921                 dev_printk(KERN_DEBUG, &pdev->dev, "start aen failed\n");
6922                 goto fail_start_aen;
6923         }
6924
6925         /* Get current SR-IOV LD/VF affiliation */
6926         if (instance->requestorId)
6927                 megasas_get_ld_vf_affiliation(instance, 1);
6928
6929         return 0;
6930
6931 fail_start_aen:
6932 fail_io_attach:
6933         megasas_mgmt_info.count--;
6934         megasas_mgmt_info.max_index--;
6935         megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
6936
6937         instance->instancet->disable_intr(instance);
6938         megasas_destroy_irqs(instance);
6939
6940         if (instance->adapter_type != MFI_SERIES)
6941                 megasas_release_fusion(instance);
6942         else
6943                 megasas_release_mfi(instance);
6944         if (instance->msix_vectors)
6945                 pci_free_irq_vectors(instance->pdev);
6946 fail_init_mfi:
6947         scsi_host_put(host);
6948 fail_alloc_instance:
6949         pci_disable_device(pdev);
6950
6951         return -ENODEV;
6952 }
6953
6954 /**
6955  * megasas_flush_cache -        Requests FW to flush all its caches
6956  * @instance:                   Adapter soft state
6957  */
6958 static void megasas_flush_cache(struct megasas_instance *instance)
6959 {
6960         struct megasas_cmd *cmd;
6961         struct megasas_dcmd_frame *dcmd;
6962
6963         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
6964                 return;
6965
6966         cmd = megasas_get_cmd(instance);
6967
6968         if (!cmd)
6969                 return;
6970
6971         dcmd = &cmd->frame->dcmd;
6972
6973         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6974
6975         dcmd->cmd = MFI_CMD_DCMD;
6976         dcmd->cmd_status = 0x0;
6977         dcmd->sge_count = 0;
6978         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
6979         dcmd->timeout = 0;
6980         dcmd->pad_0 = 0;
6981         dcmd->data_xfer_len = 0;
6982         dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH);
6983         dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
6984
6985         if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
6986                         != DCMD_SUCCESS) {
6987                 dev_err(&instance->pdev->dev,
6988                         "return from %s %d\n", __func__, __LINE__);
6989                 return;
6990         }
6991
6992         megasas_return_cmd(instance, cmd);
6993 }
6994
6995 /**
6996  * megasas_shutdown_controller -        Instructs FW to shutdown the controller
6997  * @instance:                           Adapter soft state
6998  * @opcode:                             Shutdown/Hibernate
6999  */
7000 static void megasas_shutdown_controller(struct megasas_instance *instance,
7001                                         u32 opcode)
7002 {
7003         struct megasas_cmd *cmd;
7004         struct megasas_dcmd_frame *dcmd;
7005
7006         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
7007                 return;
7008
7009         cmd = megasas_get_cmd(instance);
7010
7011         if (!cmd)
7012                 return;
7013
7014         if (instance->aen_cmd)
7015                 megasas_issue_blocked_abort_cmd(instance,
7016                         instance->aen_cmd, MFI_IO_TIMEOUT_SECS);
7017         if (instance->map_update_cmd)
7018                 megasas_issue_blocked_abort_cmd(instance,
7019                         instance->map_update_cmd, MFI_IO_TIMEOUT_SECS);
7020         if (instance->jbod_seq_cmd)
7021                 megasas_issue_blocked_abort_cmd(instance,
7022                         instance->jbod_seq_cmd, MFI_IO_TIMEOUT_SECS);
7023
7024         dcmd = &cmd->frame->dcmd;
7025
7026         memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
7027
7028         dcmd->cmd = MFI_CMD_DCMD;
7029         dcmd->cmd_status = 0x0;
7030         dcmd->sge_count = 0;
7031         dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
7032         dcmd->timeout = 0;
7033         dcmd->pad_0 = 0;
7034         dcmd->data_xfer_len = 0;
7035         dcmd->opcode = cpu_to_le32(opcode);
7036
7037         if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
7038                         != DCMD_SUCCESS) {
7039                 dev_err(&instance->pdev->dev,
7040                         "return from %s %d\n", __func__, __LINE__);
7041                 return;
7042         }
7043
7044         megasas_return_cmd(instance, cmd);
7045 }
7046
7047 #ifdef CONFIG_PM
7048 /**
7049  * megasas_suspend -    driver suspend entry point
7050  * @pdev:               PCI device structure
7051  * @state:              PCI power state to suspend routine
7052  */
7053 static int
7054 megasas_suspend(struct pci_dev *pdev, pm_message_t state)
7055 {
7056         struct Scsi_Host *host;
7057         struct megasas_instance *instance;
7058
7059         instance = pci_get_drvdata(pdev);
7060         host = instance->host;
7061         instance->unload = 1;
7062
7063         /* Shutdown SR-IOV heartbeat timer */
7064         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7065                 del_timer_sync(&instance->sriov_heartbeat_timer);
7066
7067         /* Stop the FW fault detection watchdog */
7068         if (instance->adapter_type != MFI_SERIES)
7069                 megasas_fusion_stop_watchdog(instance);
7070
7071         megasas_flush_cache(instance);
7072         megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
7073
7074         /* cancel the delayed work if this work still in queue */
7075         if (instance->ev != NULL) {
7076                 struct megasas_aen_event *ev = instance->ev;
7077                 cancel_delayed_work_sync(&ev->hotplug_work);
7078                 instance->ev = NULL;
7079         }
7080
7081         tasklet_kill(&instance->isr_tasklet);
7082
7083         pci_set_drvdata(instance->pdev, instance);
7084         instance->instancet->disable_intr(instance);
7085
7086         megasas_destroy_irqs(instance);
7087
7088         if (instance->msix_vectors)
7089                 pci_free_irq_vectors(instance->pdev);
7090
7091         pci_save_state(pdev);
7092         pci_disable_device(pdev);
7093
7094         pci_set_power_state(pdev, pci_choose_state(pdev, state));
7095
7096         return 0;
7097 }
7098
7099 /**
7100  * megasas_resume-      driver resume entry point
7101  * @pdev:               PCI device structure
7102  */
7103 static int
7104 megasas_resume(struct pci_dev *pdev)
7105 {
7106         int rval;
7107         struct Scsi_Host *host;
7108         struct megasas_instance *instance;
7109         int irq_flags = PCI_IRQ_LEGACY;
7110
7111         instance = pci_get_drvdata(pdev);
7112         host = instance->host;
7113         pci_set_power_state(pdev, PCI_D0);
7114         pci_enable_wake(pdev, PCI_D0, 0);
7115         pci_restore_state(pdev);
7116
7117         /*
7118          * PCI prepping: enable device set bus mastering and dma mask
7119          */
7120         rval = pci_enable_device_mem(pdev);
7121
7122         if (rval) {
7123                 dev_err(&pdev->dev, "Enable device failed\n");
7124                 return rval;
7125         }
7126
7127         pci_set_master(pdev);
7128
7129         /*
7130          * We expect the FW state to be READY
7131          */
7132         if (megasas_transition_to_ready(instance, 0))
7133                 goto fail_ready_state;
7134
7135         if (megasas_set_dma_mask(instance))
7136                 goto fail_set_dma_mask;
7137
7138         /*
7139          * Initialize MFI Firmware
7140          */
7141
7142         atomic_set(&instance->fw_outstanding, 0);
7143         atomic_set(&instance->ldio_outstanding, 0);
7144
7145         /* Now re-enable MSI-X */
7146         if (instance->msix_vectors) {
7147                 irq_flags = PCI_IRQ_MSIX;
7148                 if (smp_affinity_enable)
7149                         irq_flags |= PCI_IRQ_AFFINITY;
7150         }
7151         rval = pci_alloc_irq_vectors(instance->pdev, 1,
7152                                      instance->msix_vectors ?
7153                                      instance->msix_vectors : 1, irq_flags);
7154         if (rval < 0)
7155                 goto fail_reenable_msix;
7156
7157         megasas_setup_reply_map(instance);
7158
7159         if (instance->adapter_type != MFI_SERIES) {
7160                 megasas_reset_reply_desc(instance);
7161                 if (megasas_ioc_init_fusion(instance)) {
7162                         megasas_free_cmds(instance);
7163                         megasas_free_cmds_fusion(instance);
7164                         goto fail_init_mfi;
7165                 }
7166                 if (!megasas_get_map_info(instance))
7167                         megasas_sync_map_info(instance);
7168         } else {
7169                 *instance->producer = 0;
7170                 *instance->consumer = 0;
7171                 if (megasas_issue_init_mfi(instance))
7172                         goto fail_init_mfi;
7173         }
7174
7175         if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS)
7176                 goto fail_init_mfi;
7177
7178         tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
7179                      (unsigned long)instance);
7180
7181         if (instance->msix_vectors ?
7182                         megasas_setup_irqs_msix(instance, 0) :
7183                         megasas_setup_irqs_ioapic(instance))
7184                 goto fail_init_mfi;
7185
7186         /* Re-launch SR-IOV heartbeat timer */
7187         if (instance->requestorId) {
7188                 if (!megasas_sriov_start_heartbeat(instance, 0))
7189                         megasas_start_timer(instance);
7190                 else {
7191                         instance->skip_heartbeat_timer_del = 1;
7192                         goto fail_init_mfi;
7193                 }
7194         }
7195
7196         instance->instancet->enable_intr(instance);
7197         megasas_setup_jbod_map(instance);
7198         instance->unload = 0;
7199
7200         /*
7201          * Initiate AEN (Asynchronous Event Notification)
7202          */
7203         if (megasas_start_aen(instance))
7204                 dev_err(&instance->pdev->dev, "Start AEN failed\n");
7205
7206         /* Re-launch FW fault watchdog */
7207         if (instance->adapter_type != MFI_SERIES)
7208                 if (megasas_fusion_start_watchdog(instance) != SUCCESS)
7209                         goto fail_start_watchdog;
7210
7211         return 0;
7212
7213 fail_start_watchdog:
7214         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7215                 del_timer_sync(&instance->sriov_heartbeat_timer);
7216 fail_init_mfi:
7217         megasas_free_ctrl_dma_buffers(instance);
7218         megasas_free_ctrl_mem(instance);
7219         scsi_host_put(host);
7220
7221 fail_reenable_msix:
7222 fail_set_dma_mask:
7223 fail_ready_state:
7224
7225         pci_disable_device(pdev);
7226
7227         return -ENODEV;
7228 }
7229 #else
7230 #define megasas_suspend NULL
7231 #define megasas_resume  NULL
7232 #endif
7233
7234 static inline int
7235 megasas_wait_for_adapter_operational(struct megasas_instance *instance)
7236 {
7237         int wait_time = MEGASAS_RESET_WAIT_TIME * 2;
7238         int i;
7239         u8 adp_state;
7240
7241         for (i = 0; i < wait_time; i++) {
7242                 adp_state = atomic_read(&instance->adprecovery);
7243                 if ((adp_state == MEGASAS_HBA_OPERATIONAL) ||
7244                     (adp_state == MEGASAS_HW_CRITICAL_ERROR))
7245                         break;
7246
7247                 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL))
7248                         dev_notice(&instance->pdev->dev, "waiting for controller reset to finish\n");
7249
7250                 msleep(1000);
7251         }
7252
7253         if (adp_state != MEGASAS_HBA_OPERATIONAL) {
7254                 dev_info(&instance->pdev->dev,
7255                          "%s HBA failed to become operational, adp_state %d\n",
7256                          __func__, adp_state);
7257                 return 1;
7258         }
7259
7260         return 0;
7261 }
7262
7263 /**
7264  * megasas_detach_one - PCI hot"un"plug entry point
7265  * @pdev:               PCI device structure
7266  */
7267 static void megasas_detach_one(struct pci_dev *pdev)
7268 {
7269         int i;
7270         struct Scsi_Host *host;
7271         struct megasas_instance *instance;
7272         struct fusion_context *fusion;
7273         u32 pd_seq_map_sz;
7274
7275         instance = pci_get_drvdata(pdev);
7276         host = instance->host;
7277         fusion = instance->ctrl_context;
7278
7279         /* Shutdown SR-IOV heartbeat timer */
7280         if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7281                 del_timer_sync(&instance->sriov_heartbeat_timer);
7282
7283         /* Stop the FW fault detection watchdog */
7284         if (instance->adapter_type != MFI_SERIES)
7285                 megasas_fusion_stop_watchdog(instance);
7286
7287         if (instance->fw_crash_state != UNAVAILABLE)
7288                 megasas_free_host_crash_buffer(instance);
7289         scsi_remove_host(instance->host);
7290         instance->unload = 1;
7291
7292         if (megasas_wait_for_adapter_operational(instance))
7293                 goto skip_firing_dcmds;
7294
7295         megasas_flush_cache(instance);
7296         megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
7297
7298 skip_firing_dcmds:
7299         /* cancel the delayed work if this work still in queue*/
7300         if (instance->ev != NULL) {
7301                 struct megasas_aen_event *ev = instance->ev;
7302                 cancel_delayed_work_sync(&ev->hotplug_work);
7303                 instance->ev = NULL;
7304         }
7305
7306         /* cancel all wait events */
7307         wake_up_all(&instance->int_cmd_wait_q);
7308
7309         tasklet_kill(&instance->isr_tasklet);
7310
7311         /*
7312          * Take the instance off the instance array. Note that we will not
7313          * decrement the max_index. We let this array be sparse array
7314          */
7315         for (i = 0; i < megasas_mgmt_info.max_index; i++) {
7316                 if (megasas_mgmt_info.instance[i] == instance) {
7317                         megasas_mgmt_info.count--;
7318                         megasas_mgmt_info.instance[i] = NULL;
7319
7320                         break;
7321                 }
7322         }
7323
7324         instance->instancet->disable_intr(instance);
7325
7326         megasas_destroy_irqs(instance);
7327
7328         if (instance->msix_vectors)
7329                 pci_free_irq_vectors(instance->pdev);
7330
7331         if (instance->adapter_type >= VENTURA_SERIES) {
7332                 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i)
7333                         kfree(fusion->stream_detect_by_ld[i]);
7334                 kfree(fusion->stream_detect_by_ld);
7335                 fusion->stream_detect_by_ld = NULL;
7336         }
7337
7338
7339         if (instance->adapter_type != MFI_SERIES) {
7340                 megasas_release_fusion(instance);
7341                         pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
7342                                 (sizeof(struct MR_PD_CFG_SEQ) *
7343                                         (MAX_PHYSICAL_DEVICES - 1));
7344                 for (i = 0; i < 2 ; i++) {
7345                         if (fusion->ld_map[i])
7346                                 dma_free_coherent(&instance->pdev->dev,
7347                                                   fusion->max_map_sz,
7348                                                   fusion->ld_map[i],
7349                                                   fusion->ld_map_phys[i]);
7350                         if (fusion->ld_drv_map[i]) {
7351                                 if (is_vmalloc_addr(fusion->ld_drv_map[i]))
7352                                         vfree(fusion->ld_drv_map[i]);
7353                                 else
7354                                         free_pages((ulong)fusion->ld_drv_map[i],
7355                                                    fusion->drv_map_pages);
7356                         }
7357
7358                         if (fusion->pd_seq_sync[i])
7359                                 dma_free_coherent(&instance->pdev->dev,
7360                                         pd_seq_map_sz,
7361                                         fusion->pd_seq_sync[i],
7362                                         fusion->pd_seq_phys[i]);
7363                 }
7364         } else {
7365                 megasas_release_mfi(instance);
7366         }
7367
7368         if (instance->vf_affiliation)
7369                 dma_free_coherent(&pdev->dev, (MAX_LOGICAL_DRIVES + 1) *
7370                                     sizeof(struct MR_LD_VF_AFFILIATION),
7371                                     instance->vf_affiliation,
7372                                     instance->vf_affiliation_h);
7373
7374         if (instance->vf_affiliation_111)
7375                 dma_free_coherent(&pdev->dev,
7376                                     sizeof(struct MR_LD_VF_AFFILIATION_111),
7377                                     instance->vf_affiliation_111,
7378                                     instance->vf_affiliation_111_h);
7379
7380         if (instance->hb_host_mem)
7381                 dma_free_coherent(&pdev->dev, sizeof(struct MR_CTRL_HB_HOST_MEM),
7382                                     instance->hb_host_mem,
7383                                     instance->hb_host_mem_h);
7384
7385         megasas_free_ctrl_dma_buffers(instance);
7386
7387         megasas_free_ctrl_mem(instance);
7388
7389         scsi_host_put(host);
7390
7391         pci_disable_device(pdev);
7392 }
7393
7394 /**
7395  * megasas_shutdown -   Shutdown entry point
7396  * @device:             Generic device structure
7397  */
7398 static void megasas_shutdown(struct pci_dev *pdev)
7399 {
7400         struct megasas_instance *instance = pci_get_drvdata(pdev);
7401
7402         instance->unload = 1;
7403
7404         if (megasas_wait_for_adapter_operational(instance))
7405                 goto skip_firing_dcmds;
7406
7407         megasas_flush_cache(instance);
7408         megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
7409
7410 skip_firing_dcmds:
7411         instance->instancet->disable_intr(instance);
7412         megasas_destroy_irqs(instance);
7413
7414         if (instance->msix_vectors)
7415                 pci_free_irq_vectors(instance->pdev);
7416 }
7417
7418 /**
7419  * megasas_mgmt_open -  char node "open" entry point
7420  */
7421 static int megasas_mgmt_open(struct inode *inode, struct file *filep)
7422 {
7423         /*
7424          * Allow only those users with admin rights
7425          */
7426         if (!capable(CAP_SYS_ADMIN))
7427                 return -EACCES;
7428
7429         return 0;
7430 }
7431
7432 /**
7433  * megasas_mgmt_fasync -        Async notifier registration from applications
7434  *
7435  * This function adds the calling process to a driver global queue. When an
7436  * event occurs, SIGIO will be sent to all processes in this queue.
7437  */
7438 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
7439 {
7440         int rc;
7441
7442         mutex_lock(&megasas_async_queue_mutex);
7443
7444         rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
7445
7446         mutex_unlock(&megasas_async_queue_mutex);
7447
7448         if (rc >= 0) {
7449                 /* For sanity check when we get ioctl */
7450                 filep->private_data = filep;
7451                 return 0;
7452         }
7453
7454         printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
7455
7456         return rc;
7457 }
7458
7459 /**
7460  * megasas_mgmt_poll -  char node "poll" entry point
7461  * */
7462 static __poll_t megasas_mgmt_poll(struct file *file, poll_table *wait)
7463 {
7464         __poll_t mask;
7465         unsigned long flags;
7466
7467         poll_wait(file, &megasas_poll_wait, wait);
7468         spin_lock_irqsave(&poll_aen_lock, flags);
7469         if (megasas_poll_wait_aen)
7470                 mask = (EPOLLIN | EPOLLRDNORM);
7471         else
7472                 mask = 0;
7473         megasas_poll_wait_aen = 0;
7474         spin_unlock_irqrestore(&poll_aen_lock, flags);
7475         return mask;
7476 }
7477
7478 /*
7479  * megasas_set_crash_dump_params_ioctl:
7480  *              Send CRASH_DUMP_MODE DCMD to all controllers
7481  * @cmd:        MFI command frame
7482  */
7483
7484 static int megasas_set_crash_dump_params_ioctl(struct megasas_cmd *cmd)
7485 {
7486         struct megasas_instance *local_instance;
7487         int i, error = 0;
7488         int crash_support;
7489
7490         crash_support = cmd->frame->dcmd.mbox.w[0];
7491
7492         for (i = 0; i < megasas_mgmt_info.max_index; i++) {
7493                 local_instance = megasas_mgmt_info.instance[i];
7494                 if (local_instance && local_instance->crash_dump_drv_support) {
7495                         if ((atomic_read(&local_instance->adprecovery) ==
7496                                 MEGASAS_HBA_OPERATIONAL) &&
7497                                 !megasas_set_crash_dump_params(local_instance,
7498                                         crash_support)) {
7499                                 local_instance->crash_dump_app_support =
7500                                         crash_support;
7501                                 dev_info(&local_instance->pdev->dev,
7502                                         "Application firmware crash "
7503                                         "dump mode set success\n");
7504                                 error = 0;
7505                         } else {
7506                                 dev_info(&local_instance->pdev->dev,
7507                                         "Application firmware crash "
7508                                         "dump mode set failed\n");
7509                                 error = -1;
7510                         }
7511                 }
7512         }
7513         return error;
7514 }
7515
7516 /**
7517  * megasas_mgmt_fw_ioctl -      Issues management ioctls to FW
7518  * @instance:                   Adapter soft state
7519  * @argp:                       User's ioctl packet
7520  */
7521 static int
7522 megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
7523                       struct megasas_iocpacket __user * user_ioc,
7524                       struct megasas_iocpacket *ioc)
7525 {
7526         struct megasas_sge64 *kern_sge64 = NULL;
7527         struct megasas_sge32 *kern_sge32 = NULL;
7528         struct megasas_cmd *cmd;
7529         void *kbuff_arr[MAX_IOCTL_SGE];
7530         dma_addr_t buf_handle = 0;
7531         int error = 0, i;
7532         void *sense = NULL;
7533         dma_addr_t sense_handle;
7534         unsigned long *sense_ptr;
7535         u32 opcode = 0;
7536
7537         memset(kbuff_arr, 0, sizeof(kbuff_arr));
7538
7539         if (ioc->sge_count > MAX_IOCTL_SGE) {
7540                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SGE count [%d] >  max limit [%d]\n",
7541                        ioc->sge_count, MAX_IOCTL_SGE);
7542                 return -EINVAL;
7543         }
7544
7545         if ((ioc->frame.hdr.cmd >= MFI_CMD_OP_COUNT) ||
7546             ((ioc->frame.hdr.cmd == MFI_CMD_NVME) &&
7547             !instance->support_nvme_passthru)) {
7548                 dev_err(&instance->pdev->dev,
7549                         "Received invalid ioctl command 0x%x\n",
7550                         ioc->frame.hdr.cmd);
7551                 return -ENOTSUPP;
7552         }
7553
7554         cmd = megasas_get_cmd(instance);
7555         if (!cmd) {
7556                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a cmd packet\n");
7557                 return -ENOMEM;
7558         }
7559
7560         /*
7561          * User's IOCTL packet has 2 frames (maximum). Copy those two
7562          * frames into our cmd's frames. cmd->frame's context will get
7563          * overwritten when we copy from user's frames. So set that value
7564          * alone separately
7565          */
7566         memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
7567         cmd->frame->hdr.context = cpu_to_le32(cmd->index);
7568         cmd->frame->hdr.pad_0 = 0;
7569
7570         cmd->frame->hdr.flags &= (~MFI_FRAME_IEEE);
7571
7572         if (instance->consistent_mask_64bit)
7573                 cmd->frame->hdr.flags |= cpu_to_le16((MFI_FRAME_SGL64 |
7574                                        MFI_FRAME_SENSE64));
7575         else
7576                 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_SGL64 |
7577                                                MFI_FRAME_SENSE64));
7578
7579         if (cmd->frame->hdr.cmd == MFI_CMD_DCMD)
7580                 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
7581
7582         if (opcode == MR_DCMD_CTRL_SHUTDOWN) {
7583                 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS) {
7584                         megasas_return_cmd(instance, cmd);
7585                         return -1;
7586                 }
7587         }
7588
7589         if (opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) {
7590                 error = megasas_set_crash_dump_params_ioctl(cmd);
7591                 megasas_return_cmd(instance, cmd);
7592                 return error;
7593         }
7594
7595         /*
7596          * The management interface between applications and the fw uses
7597          * MFI frames. E.g, RAID configuration changes, LD property changes
7598          * etc are accomplishes through different kinds of MFI frames. The
7599          * driver needs to care only about substituting user buffers with
7600          * kernel buffers in SGLs. The location of SGL is embedded in the
7601          * struct iocpacket itself.
7602          */
7603         if (instance->consistent_mask_64bit)
7604                 kern_sge64 = (struct megasas_sge64 *)
7605                         ((unsigned long)cmd->frame + ioc->sgl_off);
7606         else
7607                 kern_sge32 = (struct megasas_sge32 *)
7608                         ((unsigned long)cmd->frame + ioc->sgl_off);
7609
7610         /*
7611          * For each user buffer, create a mirror buffer and copy in
7612          */
7613         for (i = 0; i < ioc->sge_count; i++) {
7614                 if (!ioc->sgl[i].iov_len)
7615                         continue;
7616
7617                 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
7618                                                     ioc->sgl[i].iov_len,
7619                                                     &buf_handle, GFP_KERNEL);
7620                 if (!kbuff_arr[i]) {
7621                         dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc "
7622                                "kernel SGL buffer for IOCTL\n");
7623                         error = -ENOMEM;
7624                         goto out;
7625                 }
7626
7627                 /*
7628                  * We don't change the dma_coherent_mask, so
7629                  * dma_alloc_coherent only returns 32bit addresses
7630                  */
7631                 if (instance->consistent_mask_64bit) {
7632                         kern_sge64[i].phys_addr = cpu_to_le64(buf_handle);
7633                         kern_sge64[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
7634                 } else {
7635                         kern_sge32[i].phys_addr = cpu_to_le32(buf_handle);
7636                         kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
7637                 }
7638
7639                 /*
7640                  * We created a kernel buffer corresponding to the
7641                  * user buffer. Now copy in from the user buffer
7642                  */
7643                 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
7644                                    (u32) (ioc->sgl[i].iov_len))) {
7645                         error = -EFAULT;
7646                         goto out;
7647                 }
7648         }
7649
7650         if (ioc->sense_len) {
7651                 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
7652                                              &sense_handle, GFP_KERNEL);
7653                 if (!sense) {
7654                         error = -ENOMEM;
7655                         goto out;
7656                 }
7657
7658                 sense_ptr =
7659                 (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off);
7660                 if (instance->consistent_mask_64bit)
7661                         *sense_ptr = cpu_to_le64(sense_handle);
7662                 else
7663                         *sense_ptr = cpu_to_le32(sense_handle);
7664         }
7665
7666         /*
7667          * Set the sync_cmd flag so that the ISR knows not to complete this
7668          * cmd to the SCSI mid-layer
7669          */
7670         cmd->sync_cmd = 1;
7671         if (megasas_issue_blocked_cmd(instance, cmd, 0) == DCMD_NOT_FIRED) {
7672                 cmd->sync_cmd = 0;
7673                 dev_err(&instance->pdev->dev,
7674                         "return -EBUSY from %s %d cmd 0x%x opcode 0x%x cmd->cmd_status_drv 0x%x\n",
7675                         __func__, __LINE__, cmd->frame->hdr.cmd, opcode,
7676                         cmd->cmd_status_drv);
7677                 return -EBUSY;
7678         }
7679
7680         cmd->sync_cmd = 0;
7681
7682         if (instance->unload == 1) {
7683                 dev_info(&instance->pdev->dev, "Driver unload is in progress "
7684                         "don't submit data to application\n");
7685                 goto out;
7686         }
7687         /*
7688          * copy out the kernel buffers to user buffers
7689          */
7690         for (i = 0; i < ioc->sge_count; i++) {
7691                 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
7692                                  ioc->sgl[i].iov_len)) {
7693                         error = -EFAULT;
7694                         goto out;
7695                 }
7696         }
7697
7698         /*
7699          * copy out the sense
7700          */
7701         if (ioc->sense_len) {
7702                 /*
7703                  * sense_ptr points to the location that has the user
7704                  * sense buffer address
7705                  */
7706                 sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw +
7707                                 ioc->sense_off);
7708
7709                 if (copy_to_user((void __user *)((unsigned long)
7710                                  get_unaligned((unsigned long *)sense_ptr)),
7711                                  sense, ioc->sense_len)) {
7712                         dev_err(&instance->pdev->dev, "Failed to copy out to user "
7713                                         "sense data\n");
7714                         error = -EFAULT;
7715                         goto out;
7716                 }
7717         }
7718
7719         /*
7720          * copy the status codes returned by the fw
7721          */
7722         if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
7723                          &cmd->frame->hdr.cmd_status, sizeof(u8))) {
7724                 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error copying out cmd_status\n");
7725                 error = -EFAULT;
7726         }
7727
7728 out:
7729         if (sense) {
7730                 dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
7731                                     sense, sense_handle);
7732         }
7733
7734         for (i = 0; i < ioc->sge_count; i++) {
7735                 if (kbuff_arr[i]) {
7736                         if (instance->consistent_mask_64bit)
7737                                 dma_free_coherent(&instance->pdev->dev,
7738                                         le32_to_cpu(kern_sge64[i].length),
7739                                         kbuff_arr[i],
7740                                         le64_to_cpu(kern_sge64[i].phys_addr));
7741                         else
7742                                 dma_free_coherent(&instance->pdev->dev,
7743                                         le32_to_cpu(kern_sge32[i].length),
7744                                         kbuff_arr[i],
7745                                         le32_to_cpu(kern_sge32[i].phys_addr));
7746                         kbuff_arr[i] = NULL;
7747                 }
7748         }
7749
7750         megasas_return_cmd(instance, cmd);
7751         return error;
7752 }
7753
7754 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
7755 {
7756         struct megasas_iocpacket __user *user_ioc =
7757             (struct megasas_iocpacket __user *)arg;
7758         struct megasas_iocpacket *ioc;
7759         struct megasas_instance *instance;
7760         int error;
7761
7762         ioc = memdup_user(user_ioc, sizeof(*ioc));
7763         if (IS_ERR(ioc))
7764                 return PTR_ERR(ioc);
7765
7766         instance = megasas_lookup_instance(ioc->host_no);
7767         if (!instance) {
7768                 error = -ENODEV;
7769                 goto out_kfree_ioc;
7770         }
7771
7772         /* Block ioctls in VF mode */
7773         if (instance->requestorId && !allow_vf_ioctls) {
7774                 error = -ENODEV;
7775                 goto out_kfree_ioc;
7776         }
7777
7778         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
7779                 dev_err(&instance->pdev->dev, "Controller in crit error\n");
7780                 error = -ENODEV;
7781                 goto out_kfree_ioc;
7782         }
7783
7784         if (instance->unload == 1) {
7785                 error = -ENODEV;
7786                 goto out_kfree_ioc;
7787         }
7788
7789         if (down_interruptible(&instance->ioctl_sem)) {
7790                 error = -ERESTARTSYS;
7791                 goto out_kfree_ioc;
7792         }
7793
7794         if  (megasas_wait_for_adapter_operational(instance)) {
7795                 error = -ENODEV;
7796                 goto out_up;
7797         }
7798
7799         error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
7800 out_up:
7801         up(&instance->ioctl_sem);
7802
7803 out_kfree_ioc:
7804         kfree(ioc);
7805         return error;
7806 }
7807
7808 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
7809 {
7810         struct megasas_instance *instance;
7811         struct megasas_aen aen;
7812         int error;
7813
7814         if (file->private_data != file) {
7815                 printk(KERN_DEBUG "megasas: fasync_helper was not "
7816                        "called first\n");
7817                 return -EINVAL;
7818         }
7819
7820         if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
7821                 return -EFAULT;
7822
7823         instance = megasas_lookup_instance(aen.host_no);
7824
7825         if (!instance)
7826                 return -ENODEV;
7827
7828         if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
7829                 return -ENODEV;
7830         }
7831
7832         if (instance->unload == 1) {
7833                 return -ENODEV;
7834         }
7835
7836         if  (megasas_wait_for_adapter_operational(instance))
7837                 return -ENODEV;
7838
7839         mutex_lock(&instance->reset_mutex);
7840         error = megasas_register_aen(instance, aen.seq_num,
7841                                      aen.class_locale_word);
7842         mutex_unlock(&instance->reset_mutex);
7843         return error;
7844 }
7845
7846 /**
7847  * megasas_mgmt_ioctl - char node ioctl entry point
7848  */
7849 static long
7850 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
7851 {
7852         switch (cmd) {
7853         case MEGASAS_IOC_FIRMWARE:
7854                 return megasas_mgmt_ioctl_fw(file, arg);
7855
7856         case MEGASAS_IOC_GET_AEN:
7857                 return megasas_mgmt_ioctl_aen(file, arg);
7858         }
7859
7860         return -ENOTTY;
7861 }
7862
7863 #ifdef CONFIG_COMPAT
7864 static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg)
7865 {
7866         struct compat_megasas_iocpacket __user *cioc =
7867             (struct compat_megasas_iocpacket __user *)arg;
7868         struct megasas_iocpacket __user *ioc =
7869             compat_alloc_user_space(sizeof(struct megasas_iocpacket));
7870         int i;
7871         int error = 0;
7872         compat_uptr_t ptr;
7873         u32 local_sense_off;
7874         u32 local_sense_len;
7875         u32 user_sense_off;
7876
7877         if (clear_user(ioc, sizeof(*ioc)))
7878                 return -EFAULT;
7879
7880         if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) ||
7881             copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) ||
7882             copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) ||
7883             copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) ||
7884             copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) ||
7885             copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32)))
7886                 return -EFAULT;
7887
7888         /*
7889          * The sense_ptr is used in megasas_mgmt_fw_ioctl only when
7890          * sense_len is not null, so prepare the 64bit value under
7891          * the same condition.
7892          */
7893         if (get_user(local_sense_off, &ioc->sense_off) ||
7894                 get_user(local_sense_len, &ioc->sense_len) ||
7895                 get_user(user_sense_off, &cioc->sense_off))
7896                 return -EFAULT;
7897
7898         if (local_sense_off != user_sense_off)
7899                 return -EINVAL;
7900
7901         if (local_sense_len) {
7902                 void __user **sense_ioc_ptr =
7903                         (void __user **)((u8 *)((unsigned long)&ioc->frame.raw) + local_sense_off);
7904                 compat_uptr_t *sense_cioc_ptr =
7905                         (compat_uptr_t *)(((unsigned long)&cioc->frame.raw) + user_sense_off);
7906                 if (get_user(ptr, sense_cioc_ptr) ||
7907                     put_user(compat_ptr(ptr), sense_ioc_ptr))
7908                         return -EFAULT;
7909         }
7910
7911         for (i = 0; i < MAX_IOCTL_SGE; i++) {
7912                 if (get_user(ptr, &cioc->sgl[i].iov_base) ||
7913                     put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) ||
7914                     copy_in_user(&ioc->sgl[i].iov_len,
7915                                  &cioc->sgl[i].iov_len, sizeof(compat_size_t)))
7916                         return -EFAULT;
7917         }
7918
7919         error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc);
7920
7921         if (copy_in_user(&cioc->frame.hdr.cmd_status,
7922                          &ioc->frame.hdr.cmd_status, sizeof(u8))) {
7923                 printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n");
7924                 return -EFAULT;
7925         }
7926         return error;
7927 }
7928
7929 static long
7930 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
7931                           unsigned long arg)
7932 {
7933         switch (cmd) {
7934         case MEGASAS_IOC_FIRMWARE32:
7935                 return megasas_mgmt_compat_ioctl_fw(file, arg);
7936         case MEGASAS_IOC_GET_AEN:
7937                 return megasas_mgmt_ioctl_aen(file, arg);
7938         }
7939
7940         return -ENOTTY;
7941 }
7942 #endif
7943
7944 /*
7945  * File operations structure for management interface
7946  */
7947 static const struct file_operations megasas_mgmt_fops = {
7948         .owner = THIS_MODULE,
7949         .open = megasas_mgmt_open,
7950         .fasync = megasas_mgmt_fasync,
7951         .unlocked_ioctl = megasas_mgmt_ioctl,
7952         .poll = megasas_mgmt_poll,
7953 #ifdef CONFIG_COMPAT
7954         .compat_ioctl = megasas_mgmt_compat_ioctl,
7955 #endif
7956         .llseek = noop_llseek,
7957 };
7958
7959 /*
7960  * PCI hotplug support registration structure
7961  */
7962 static struct pci_driver megasas_pci_driver = {
7963
7964         .name = "megaraid_sas",
7965         .id_table = megasas_pci_table,
7966         .probe = megasas_probe_one,
7967         .remove = megasas_detach_one,
7968         .suspend = megasas_suspend,
7969         .resume = megasas_resume,
7970         .shutdown = megasas_shutdown,
7971 };
7972
7973 /*
7974  * Sysfs driver attributes
7975  */
7976 static ssize_t version_show(struct device_driver *dd, char *buf)
7977 {
7978         return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
7979                         MEGASAS_VERSION);
7980 }
7981 static DRIVER_ATTR_RO(version);
7982
7983 static ssize_t release_date_show(struct device_driver *dd, char *buf)
7984 {
7985         return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n",
7986                 MEGASAS_RELDATE);
7987 }
7988 static DRIVER_ATTR_RO(release_date);
7989
7990 static ssize_t support_poll_for_event_show(struct device_driver *dd, char *buf)
7991 {
7992         return sprintf(buf, "%u\n", support_poll_for_event);
7993 }
7994 static DRIVER_ATTR_RO(support_poll_for_event);
7995
7996 static ssize_t support_device_change_show(struct device_driver *dd, char *buf)
7997 {
7998         return sprintf(buf, "%u\n", support_device_change);
7999 }
8000 static DRIVER_ATTR_RO(support_device_change);
8001
8002 static ssize_t dbg_lvl_show(struct device_driver *dd, char *buf)
8003 {
8004         return sprintf(buf, "%u\n", megasas_dbg_lvl);
8005 }
8006
8007 static ssize_t dbg_lvl_store(struct device_driver *dd, const char *buf,
8008                              size_t count)
8009 {
8010         int retval = count;
8011
8012         if (sscanf(buf, "%u", &megasas_dbg_lvl) < 1) {
8013                 printk(KERN_ERR "megasas: could not set dbg_lvl\n");
8014                 retval = -EINVAL;
8015         }
8016         return retval;
8017 }
8018 static DRIVER_ATTR_RW(dbg_lvl);
8019
8020 static ssize_t
8021 support_nvme_encapsulation_show(struct device_driver *dd, char *buf)
8022 {
8023         return sprintf(buf, "%u\n", support_nvme_encapsulation);
8024 }
8025
8026 static DRIVER_ATTR_RO(support_nvme_encapsulation);
8027
8028 static inline void megasas_remove_scsi_device(struct scsi_device *sdev)
8029 {
8030         sdev_printk(KERN_INFO, sdev, "SCSI device is removed\n");
8031         scsi_remove_device(sdev);
8032         scsi_device_put(sdev);
8033 }
8034
8035 /**
8036  * megasas_update_device_list - Update the PD and LD device list from FW
8037  *                              after an AEN event notification
8038  * @instance:                   Adapter soft state
8039  * @event_type:                 Indicates type of event (PD or LD event)
8040  *
8041  * @return:                     Success or failure
8042  *
8043  * Issue DCMDs to Firmware to update the internal device list in driver.
8044  * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination
8045  * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list.
8046  */
8047 static
8048 int megasas_update_device_list(struct megasas_instance *instance,
8049                                int event_type)
8050 {
8051         int dcmd_ret = DCMD_SUCCESS;
8052
8053         if (instance->enable_fw_dev_list) {
8054                 dcmd_ret = megasas_host_device_list_query(instance, false);
8055                 if (dcmd_ret != DCMD_SUCCESS)
8056                         goto out;
8057         } else {
8058                 if (event_type & SCAN_PD_CHANNEL) {
8059                         dcmd_ret = megasas_get_pd_list(instance);
8060
8061                         if (dcmd_ret != DCMD_SUCCESS)
8062                                 goto out;
8063                 }
8064
8065                 if (event_type & SCAN_VD_CHANNEL) {
8066                         if (!instance->requestorId ||
8067                             (instance->requestorId &&
8068                              megasas_get_ld_vf_affiliation(instance, 0))) {
8069                                 dcmd_ret = megasas_ld_list_query(instance,
8070                                                 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST);
8071                                 if (dcmd_ret != DCMD_SUCCESS)
8072                                         goto out;
8073                         }
8074                 }
8075         }
8076
8077 out:
8078         return dcmd_ret;
8079 }
8080
8081 /**
8082  * megasas_add_remove_devices - Add/remove devices to SCSI mid-layer
8083  *                              after an AEN event notification
8084  * @instance:                   Adapter soft state
8085  * @scan_type:                  Indicates type of devices (PD/LD) to add
8086  * @return                      void
8087  */
8088 static
8089 void megasas_add_remove_devices(struct megasas_instance *instance,
8090                                 int scan_type)
8091 {
8092         int i, j;
8093         u16 pd_index = 0;
8094         u16 ld_index = 0;
8095         u16 channel = 0, id = 0;
8096         struct Scsi_Host *host;
8097         struct scsi_device *sdev1;
8098         struct MR_HOST_DEVICE_LIST *targetid_list = NULL;
8099         struct MR_HOST_DEVICE_LIST_ENTRY *targetid_entry = NULL;
8100
8101         host = instance->host;
8102
8103         if (instance->enable_fw_dev_list) {
8104                 targetid_list = instance->host_device_list_buf;
8105                 for (i = 0; i < targetid_list->count; i++) {
8106                         targetid_entry = &targetid_list->host_device_list[i];
8107                         if (targetid_entry->flags.u.bits.is_sys_pd) {
8108                                 channel = le16_to_cpu(targetid_entry->target_id) /
8109                                                 MEGASAS_MAX_DEV_PER_CHANNEL;
8110                                 id = le16_to_cpu(targetid_entry->target_id) %
8111                                                 MEGASAS_MAX_DEV_PER_CHANNEL;
8112                         } else {
8113                                 channel = MEGASAS_MAX_PD_CHANNELS +
8114                                           (le16_to_cpu(targetid_entry->target_id) /
8115                                            MEGASAS_MAX_DEV_PER_CHANNEL);
8116                                 id = le16_to_cpu(targetid_entry->target_id) %
8117                                                 MEGASAS_MAX_DEV_PER_CHANNEL;
8118                         }
8119                         sdev1 = scsi_device_lookup(host, channel, id, 0);
8120                         if (!sdev1) {
8121                                 scsi_add_device(host, channel, id, 0);
8122                         } else {
8123                                 scsi_device_put(sdev1);
8124                         }
8125                 }
8126         }
8127
8128         if (scan_type & SCAN_PD_CHANNEL) {
8129                 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
8130                         for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
8131                                 pd_index = i * MEGASAS_MAX_DEV_PER_CHANNEL + j;
8132                                 sdev1 = scsi_device_lookup(host, i, j, 0);
8133                                 if (instance->pd_list[pd_index].driveState ==
8134                                                         MR_PD_STATE_SYSTEM) {
8135                                         if (!sdev1)
8136                                                 scsi_add_device(host, i, j, 0);
8137                                         else
8138                                                 scsi_device_put(sdev1);
8139                                 } else {
8140                                         if (sdev1)
8141                                                 megasas_remove_scsi_device(sdev1);
8142                                 }
8143                         }
8144                 }
8145         }
8146
8147         if (scan_type & SCAN_VD_CHANNEL) {
8148                 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
8149                         for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
8150                                 ld_index = (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
8151                                 sdev1 = scsi_device_lookup(host,
8152                                                 MEGASAS_MAX_PD_CHANNELS + i, j, 0);
8153                                 if (instance->ld_ids[ld_index] != 0xff) {
8154                                         if (!sdev1)
8155                                                 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
8156                                         else
8157                                                 scsi_device_put(sdev1);
8158                                 } else {
8159                                         if (sdev1)
8160                                                 megasas_remove_scsi_device(sdev1);
8161                                 }
8162                         }
8163                 }
8164         }
8165
8166 }
8167
8168 static void
8169 megasas_aen_polling(struct work_struct *work)
8170 {
8171         struct megasas_aen_event *ev =
8172                 container_of(work, struct megasas_aen_event, hotplug_work.work);
8173         struct megasas_instance *instance = ev->instance;
8174         union megasas_evt_class_locale class_locale;
8175         int event_type = 0;
8176         u32 seq_num, wait_time = MEGASAS_RESET_WAIT_TIME;
8177         int error;
8178         u8  dcmd_ret = DCMD_SUCCESS;
8179
8180         if (!instance) {
8181                 printk(KERN_ERR "invalid instance!\n");
8182                 kfree(ev);
8183                 return;
8184         }
8185
8186         /* Adjust event workqueue thread wait time for VF mode */
8187         if (instance->requestorId)
8188                 wait_time = MEGASAS_ROUTINE_WAIT_TIME_VF;
8189
8190         /* Don't run the event workqueue thread if OCR is running */
8191         mutex_lock(&instance->reset_mutex);
8192
8193         instance->ev = NULL;
8194         if (instance->evt_detail) {
8195                 megasas_decode_evt(instance);
8196
8197                 switch (le32_to_cpu(instance->evt_detail->code)) {
8198
8199                 case MR_EVT_PD_INSERTED:
8200                 case MR_EVT_PD_REMOVED:
8201                         event_type = SCAN_PD_CHANNEL;
8202                         break;
8203
8204                 case MR_EVT_LD_OFFLINE:
8205                 case MR_EVT_CFG_CLEARED:
8206                 case MR_EVT_LD_DELETED:
8207                 case MR_EVT_LD_CREATED:
8208                         event_type = SCAN_VD_CHANNEL;
8209                         break;
8210
8211                 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
8212                 case MR_EVT_FOREIGN_CFG_IMPORTED:
8213                 case MR_EVT_LD_STATE_CHANGE:
8214                         event_type = SCAN_PD_CHANNEL | SCAN_VD_CHANNEL;
8215                         dev_info(&instance->pdev->dev, "scanning for scsi%d...\n",
8216                                 instance->host->host_no);
8217                         break;
8218
8219                 case MR_EVT_CTRL_PROP_CHANGED:
8220                         dcmd_ret = megasas_get_ctrl_info(instance);
8221                         if (dcmd_ret == DCMD_SUCCESS &&
8222                             instance->snapdump_wait_time) {
8223                                 megasas_get_snapdump_properties(instance);
8224                                 dev_info(&instance->pdev->dev,
8225                                          "Snap dump wait time\t: %d\n",
8226                                          instance->snapdump_wait_time);
8227                         }
8228                         break;
8229                 default:
8230                         event_type = 0;
8231                         break;
8232                 }
8233         } else {
8234                 dev_err(&instance->pdev->dev, "invalid evt_detail!\n");
8235                 mutex_unlock(&instance->reset_mutex);
8236                 kfree(ev);
8237                 return;
8238         }
8239
8240         if (event_type)
8241                 dcmd_ret = megasas_update_device_list(instance, event_type);
8242
8243         mutex_unlock(&instance->reset_mutex);
8244
8245         if (event_type && dcmd_ret == DCMD_SUCCESS)
8246                 megasas_add_remove_devices(instance, event_type);
8247
8248         if (dcmd_ret == DCMD_SUCCESS)
8249                 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1;
8250         else
8251                 seq_num = instance->last_seq_num;
8252
8253         /* Register AEN with FW for latest sequence number plus 1 */
8254         class_locale.members.reserved = 0;
8255         class_locale.members.locale = MR_EVT_LOCALE_ALL;
8256         class_locale.members.class = MR_EVT_CLASS_DEBUG;
8257
8258         if (instance->aen_cmd != NULL) {
8259                 kfree(ev);
8260                 return;
8261         }
8262
8263         mutex_lock(&instance->reset_mutex);
8264         error = megasas_register_aen(instance, seq_num,
8265                                         class_locale.word);
8266         if (error)
8267                 dev_err(&instance->pdev->dev,
8268                         "register aen failed error %x\n", error);
8269
8270         mutex_unlock(&instance->reset_mutex);
8271         kfree(ev);
8272 }
8273
8274 /**
8275  * megasas_init - Driver load entry point
8276  */
8277 static int __init megasas_init(void)
8278 {
8279         int rval;
8280
8281         /*
8282          * Booted in kdump kernel, minimize memory footprints by
8283          * disabling few features
8284          */
8285         if (reset_devices) {
8286                 msix_vectors = 1;
8287                 rdpq_enable = 0;
8288                 dual_qdepth_disable = 1;
8289         }
8290
8291         /*
8292          * Announce driver version and other information
8293          */
8294         pr_info("megasas: %s\n", MEGASAS_VERSION);
8295
8296         spin_lock_init(&poll_aen_lock);
8297
8298         support_poll_for_event = 2;
8299         support_device_change = 1;
8300         support_nvme_encapsulation = true;
8301
8302         memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
8303
8304         /*
8305          * Register character device node
8306          */
8307         rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
8308
8309         if (rval < 0) {
8310                 printk(KERN_DEBUG "megasas: failed to open device node\n");
8311                 return rval;
8312         }
8313
8314         megasas_mgmt_majorno = rval;
8315
8316         /*
8317          * Register ourselves as PCI hotplug module
8318          */
8319         rval = pci_register_driver(&megasas_pci_driver);
8320
8321         if (rval) {
8322                 printk(KERN_DEBUG "megasas: PCI hotplug registration failed \n");
8323                 goto err_pcidrv;
8324         }
8325
8326         rval = driver_create_file(&megasas_pci_driver.driver,
8327                                   &driver_attr_version);
8328         if (rval)
8329                 goto err_dcf_attr_ver;
8330
8331         rval = driver_create_file(&megasas_pci_driver.driver,
8332                                   &driver_attr_release_date);
8333         if (rval)
8334                 goto err_dcf_rel_date;
8335
8336         rval = driver_create_file(&megasas_pci_driver.driver,
8337                                 &driver_attr_support_poll_for_event);
8338         if (rval)
8339                 goto err_dcf_support_poll_for_event;
8340
8341         rval = driver_create_file(&megasas_pci_driver.driver,
8342                                   &driver_attr_dbg_lvl);
8343         if (rval)
8344                 goto err_dcf_dbg_lvl;
8345         rval = driver_create_file(&megasas_pci_driver.driver,
8346                                 &driver_attr_support_device_change);
8347         if (rval)
8348                 goto err_dcf_support_device_change;
8349
8350         rval = driver_create_file(&megasas_pci_driver.driver,
8351                                   &driver_attr_support_nvme_encapsulation);
8352         if (rval)
8353                 goto err_dcf_support_nvme_encapsulation;
8354
8355         return rval;
8356
8357 err_dcf_support_nvme_encapsulation:
8358         driver_remove_file(&megasas_pci_driver.driver,
8359                            &driver_attr_support_device_change);
8360
8361 err_dcf_support_device_change:
8362         driver_remove_file(&megasas_pci_driver.driver,
8363                            &driver_attr_dbg_lvl);
8364 err_dcf_dbg_lvl:
8365         driver_remove_file(&megasas_pci_driver.driver,
8366                         &driver_attr_support_poll_for_event);
8367 err_dcf_support_poll_for_event:
8368         driver_remove_file(&megasas_pci_driver.driver,
8369                            &driver_attr_release_date);
8370 err_dcf_rel_date:
8371         driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
8372 err_dcf_attr_ver:
8373         pci_unregister_driver(&megasas_pci_driver);
8374 err_pcidrv:
8375         unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
8376         return rval;
8377 }
8378
8379 /**
8380  * megasas_exit - Driver unload entry point
8381  */
8382 static void __exit megasas_exit(void)
8383 {
8384         driver_remove_file(&megasas_pci_driver.driver,
8385                            &driver_attr_dbg_lvl);
8386         driver_remove_file(&megasas_pci_driver.driver,
8387                         &driver_attr_support_poll_for_event);
8388         driver_remove_file(&megasas_pci_driver.driver,
8389                         &driver_attr_support_device_change);
8390         driver_remove_file(&megasas_pci_driver.driver,
8391                            &driver_attr_release_date);
8392         driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
8393         driver_remove_file(&megasas_pci_driver.driver,
8394                            &driver_attr_support_nvme_encapsulation);
8395
8396         pci_unregister_driver(&megasas_pci_driver);
8397         unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
8398 }
8399
8400 module_init(megasas_init);
8401 module_exit(megasas_exit);