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