linux/drivers/scsi/megaraid/megaraid_sas_base.c
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   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 *  Linux MegaRAID driver for SAS based RAID controllers
   4 *
   5 *  Copyright (c) 2003-2013  LSI Corporation
   6 *  Copyright (c) 2013-2016  Avago Technologies
   7 *  Copyright (c) 2016-2018  Broadcom Inc.
   8 *
   9 *  Authors: Broadcom Inc.
  10 *           Sreenivas Bagalkote
  11 *           Sumant Patro
  12 *           Bo Yang
  13 *           Adam Radford
  14 *           Kashyap Desai <kashyap.desai@broadcom.com>
  15 *           Sumit Saxena <sumit.saxena@broadcom.com>
  16 *
  17 *  Send feedback to: megaraidlinux.pdl@broadcom.com
  18 */
  19
  20#include <linux/kernel.h>
  21#include <linux/types.h>
  22#include <linux/pci.h>
  23#include <linux/list.h>
  24#include <linux/moduleparam.h>
  25#include <linux/module.h>
  26#include <linux/spinlock.h>
  27#include <linux/interrupt.h>
  28#include <linux/delay.h>
  29#include <linux/uio.h>
  30#include <linux/slab.h>
  31#include <linux/uaccess.h>
  32#include <asm/unaligned.h>
  33#include <linux/fs.h>
  34#include <linux/compat.h>
  35#include <linux/blkdev.h>
  36#include <linux/mutex.h>
  37#include <linux/poll.h>
  38#include <linux/vmalloc.h>
  39#include <linux/irq_poll.h>
  40
  41#include <scsi/scsi.h>
  42#include <scsi/scsi_cmnd.h>
  43#include <scsi/scsi_device.h>
  44#include <scsi/scsi_host.h>
  45#include <scsi/scsi_tcq.h>
  46#include <scsi/scsi_dbg.h>
  47#include "megaraid_sas_fusion.h"
  48#include "megaraid_sas.h"
  49
  50/*
  51 * Number of sectors per IO command
  52 * Will be set in megasas_init_mfi if user does not provide
  53 */
  54static unsigned int max_sectors;
  55module_param_named(max_sectors, max_sectors, int, 0444);
  56MODULE_PARM_DESC(max_sectors,
  57        "Maximum number of sectors per IO command");
  58
  59static int msix_disable;
  60module_param(msix_disable, int, 0444);
  61MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0");
  62
  63static unsigned int msix_vectors;
  64module_param(msix_vectors, int, 0444);
  65MODULE_PARM_DESC(msix_vectors, "MSI-X max vector count. Default: Set by FW");
  66
  67static int allow_vf_ioctls;
  68module_param(allow_vf_ioctls, int, 0444);
  69MODULE_PARM_DESC(allow_vf_ioctls, "Allow ioctls in SR-IOV VF mode. Default: 0");
  70
  71static unsigned int throttlequeuedepth = MEGASAS_THROTTLE_QUEUE_DEPTH;
  72module_param(throttlequeuedepth, int, 0444);
  73MODULE_PARM_DESC(throttlequeuedepth,
  74        "Adapter queue depth when throttled due to I/O timeout. Default: 16");
  75
  76unsigned int resetwaittime = MEGASAS_RESET_WAIT_TIME;
  77module_param(resetwaittime, int, 0444);
  78MODULE_PARM_DESC(resetwaittime, "Wait time in (1-180s) after I/O timeout before resetting adapter. Default: 180s");
  79
  80int smp_affinity_enable = 1;
  81module_param(smp_affinity_enable, int, 0444);
  82MODULE_PARM_DESC(smp_affinity_enable, "SMP affinity feature enable/disable Default: enable(1)");
  83
  84int rdpq_enable = 1;
  85module_param(rdpq_enable, int, 0444);
  86MODULE_PARM_DESC(rdpq_enable, "Allocate reply queue in chunks for large queue depth enable/disable Default: enable(1)");
  87
  88unsigned int dual_qdepth_disable;
  89module_param(dual_qdepth_disable, int, 0444);
  90MODULE_PARM_DESC(dual_qdepth_disable, "Disable dual queue depth feature. Default: 0");
  91
  92unsigned int scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
  93module_param(scmd_timeout, int, 0444);
  94MODULE_PARM_DESC(scmd_timeout, "scsi command timeout (10-90s), default 90s. See megasas_reset_timer.");
  95
  96int perf_mode = -1;
  97module_param(perf_mode, int, 0444);
  98MODULE_PARM_DESC(perf_mode, "Performance mode (only for Aero adapters), options:\n\t\t"
  99                "0 - balanced: High iops and low latency queues are allocated &\n\t\t"
 100                "interrupt coalescing is enabled only on high iops queues\n\t\t"
 101                "1 - iops: High iops queues are not allocated &\n\t\t"
 102                "interrupt coalescing is enabled on all queues\n\t\t"
 103                "2 - latency: High iops queues are not allocated &\n\t\t"
 104                "interrupt coalescing is disabled on all queues\n\t\t"
 105                "default mode is 'balanced'"
 106                );
 107
 108int event_log_level = MFI_EVT_CLASS_CRITICAL;
 109module_param(event_log_level, int, 0644);
 110MODULE_PARM_DESC(event_log_level, "Asynchronous event logging level- range is: -2(CLASS_DEBUG) to 4(CLASS_DEAD), Default: 2(CLASS_CRITICAL)");
 111
 112unsigned int enable_sdev_max_qd;
 113module_param(enable_sdev_max_qd, int, 0444);
 114MODULE_PARM_DESC(enable_sdev_max_qd, "Enable sdev max qd as can_queue. Default: 0");
 115
 116MODULE_LICENSE("GPL");
 117MODULE_VERSION(MEGASAS_VERSION);
 118MODULE_AUTHOR("megaraidlinux.pdl@broadcom.com");
 119MODULE_DESCRIPTION("Broadcom MegaRAID SAS Driver");
 120
 121int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
 122static int megasas_get_pd_list(struct megasas_instance *instance);
 123static int megasas_ld_list_query(struct megasas_instance *instance,
 124                                 u8 query_type);
 125static int megasas_issue_init_mfi(struct megasas_instance *instance);
 126static int megasas_register_aen(struct megasas_instance *instance,
 127                                u32 seq_num, u32 class_locale_word);
 128static void megasas_get_pd_info(struct megasas_instance *instance,
 129                                struct scsi_device *sdev);
 130
 131/*
 132 * PCI ID table for all supported controllers
 133 */
 134static struct pci_device_id megasas_pci_table[] = {
 135
 136        {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)},
 137        /* xscale IOP */
 138        {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)},
 139        /* ppc IOP */
 140        {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)},
 141        /* ppc IOP */
 142        {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)},
 143        /* gen2*/
 144        {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)},
 145        /* gen2*/
 146        {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)},
 147        /* skinny*/
 148        {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)},
 149        /* skinny*/
 150        {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)},
 151        /* xscale IOP, vega */
 152        {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
 153        /* xscale IOP */
 154        {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)},
 155        /* Fusion */
 156        {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_PLASMA)},
 157        /* Plasma */
 158        {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)},
 159        /* Invader */
 160        {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FURY)},
 161        /* Fury */
 162        {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER)},
 163        /* Intruder */
 164        {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER_24)},
 165        /* Intruder 24 port*/
 166        {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_52)},
 167        {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_53)},
 168        /* VENTURA */
 169        {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA)},
 170        {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER)},
 171        {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_HARPOON)},
 172        {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_TOMCAT)},
 173        {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA_4PORT)},
 174        {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER_4PORT)},
 175        {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E1)},
 176        {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E2)},
 177        {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E5)},
 178        {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E6)},
 179        {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E0)},
 180        {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E3)},
 181        {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E4)},
 182        {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E7)},
 183        {}
 184};
 185
 186MODULE_DEVICE_TABLE(pci, megasas_pci_table);
 187
 188static int megasas_mgmt_majorno;
 189struct megasas_mgmt_info megasas_mgmt_info;
 190static struct fasync_struct *megasas_async_queue;
 191static DEFINE_MUTEX(megasas_async_queue_mutex);
 192
 193static int megasas_poll_wait_aen;
 194static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait);
 195static u32 support_poll_for_event;
 196u32 megasas_dbg_lvl;
 197static u32 support_device_change;
 198static bool support_nvme_encapsulation;
 199static bool support_pci_lane_margining;
 200
 201/* define lock for aen poll */
 202static spinlock_t poll_aen_lock;
 203
 204extern struct dentry *megasas_debugfs_root;
 205extern void megasas_init_debugfs(void);
 206extern void megasas_exit_debugfs(void);
 207extern void megasas_setup_debugfs(struct megasas_instance *instance);
 208extern void megasas_destroy_debugfs(struct megasas_instance *instance);
 209
 210void
 211megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
 212                     u8 alt_status);
 213static u32
 214megasas_read_fw_status_reg_gen2(struct megasas_instance *instance);
 215static int
 216megasas_adp_reset_gen2(struct megasas_instance *instance,
 217                       struct megasas_register_set __iomem *reg_set);
 218static irqreturn_t megasas_isr(int irq, void *devp);
 219static u32
 220megasas_init_adapter_mfi(struct megasas_instance *instance);
 221u32
 222megasas_build_and_issue_cmd(struct megasas_instance *instance,
 223                            struct scsi_cmnd *scmd);
 224static void megasas_complete_cmd_dpc(unsigned long instance_addr);
 225int
 226wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
 227        int seconds);
 228void megasas_fusion_ocr_wq(struct work_struct *work);
 229static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
 230                                         int initial);
 231static int
 232megasas_set_dma_mask(struct megasas_instance *instance);
 233static int
 234megasas_alloc_ctrl_mem(struct megasas_instance *instance);
 235static inline void
 236megasas_free_ctrl_mem(struct megasas_instance *instance);
 237static inline int
 238megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance);
 239static inline void
 240megasas_free_ctrl_dma_buffers(struct megasas_instance *instance);
 241static inline void
 242megasas_init_ctrl_params(struct megasas_instance *instance);
 243
 244u32 megasas_readl(struct megasas_instance *instance,
 245                  const volatile void __iomem *addr)
 246{
 247        u32 i = 0, ret_val;
 248        /*
 249         * Due to a HW errata in Aero controllers, reads to certain
 250         * Fusion registers could intermittently return all zeroes.
 251         * This behavior is transient in nature and subsequent reads will
 252         * return valid value. As a workaround in driver, retry readl for
 253         * upto three times until a non-zero value is read.
 254         */
 255        if (instance->adapter_type == AERO_SERIES) {
 256                do {
 257                        ret_val = readl(addr);
 258                        i++;
 259                } while (ret_val == 0 && i < 3);
 260                return ret_val;
 261        } else {
 262                return readl(addr);
 263        }
 264}
 265
 266/**
 267 * megasas_set_dma_settings -   Populate DMA address, length and flags for DCMDs
 268 * @instance:                   Adapter soft state
 269 * @dcmd:                       DCMD frame inside MFI command
 270 * @dma_addr:                   DMA address of buffer to be passed to FW
 271 * @dma_len:                    Length of DMA buffer to be passed to FW
 272 * @return:                     void
 273 */
 274void megasas_set_dma_settings(struct megasas_instance *instance,
 275                              struct megasas_dcmd_frame *dcmd,
 276                              dma_addr_t dma_addr, u32 dma_len)
 277{
 278        if (instance->consistent_mask_64bit) {
 279                dcmd->sgl.sge64[0].phys_addr = cpu_to_le64(dma_addr);
 280                dcmd->sgl.sge64[0].length = cpu_to_le32(dma_len);
 281                dcmd->flags = cpu_to_le16(dcmd->flags | MFI_FRAME_SGL64);
 282
 283        } else {
 284                dcmd->sgl.sge32[0].phys_addr =
 285                                cpu_to_le32(lower_32_bits(dma_addr));
 286                dcmd->sgl.sge32[0].length = cpu_to_le32(dma_len);
 287                dcmd->flags = cpu_to_le16(dcmd->flags);
 288        }
 289}
 290
 291static void
 292megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
 293{
 294        instance->instancet->fire_cmd(instance,
 295                cmd->frame_phys_addr, 0, instance->reg_set);
 296        return;
 297}
 298
 299/**
 300 * megasas_get_cmd -    Get a command from the free pool
 301 * @instance:           Adapter soft state
 302 *
 303 * Returns a free command from the pool
 304 */
 305struct megasas_cmd *megasas_get_cmd(struct megasas_instance
 306                                                  *instance)
 307{
 308        unsigned long flags;
 309        struct megasas_cmd *cmd = NULL;
 310
 311        spin_lock_irqsave(&instance->mfi_pool_lock, flags);
 312
 313        if (!list_empty(&instance->cmd_pool)) {
 314                cmd = list_entry((&instance->cmd_pool)->next,
 315                                 struct megasas_cmd, list);
 316                list_del_init(&cmd->list);
 317        } else {
 318                dev_err(&instance->pdev->dev, "Command pool empty!\n");
 319        }
 320
 321        spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
 322        return cmd;
 323}
 324
 325/**
 326 * megasas_return_cmd - Return a cmd to free command pool
 327 * @instance:           Adapter soft state
 328 * @cmd:                Command packet to be returned to free command pool
 329 */
 330void
 331megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
 332{
 333        unsigned long flags;
 334        u32 blk_tags;
 335        struct megasas_cmd_fusion *cmd_fusion;
 336        struct fusion_context *fusion = instance->ctrl_context;
 337
 338        /* This flag is used only for fusion adapter.
 339         * Wait for Interrupt for Polled mode DCMD
 340         */
 341        if (cmd->flags & DRV_DCMD_POLLED_MODE)
 342                return;
 343
 344        spin_lock_irqsave(&instance->mfi_pool_lock, flags);
 345
 346        if (fusion) {
 347                blk_tags = instance->max_scsi_cmds + cmd->index;
 348                cmd_fusion = fusion->cmd_list[blk_tags];
 349                megasas_return_cmd_fusion(instance, cmd_fusion);
 350        }
 351        cmd->scmd = NULL;
 352        cmd->frame_count = 0;
 353        cmd->flags = 0;
 354        memset(cmd->frame, 0, instance->mfi_frame_size);
 355        cmd->frame->io.context = cpu_to_le32(cmd->index);
 356        if (!fusion && reset_devices)
 357                cmd->frame->hdr.cmd = MFI_CMD_INVALID;
 358        list_add(&cmd->list, (&instance->cmd_pool)->next);
 359
 360        spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
 361
 362}
 363
 364static const char *
 365format_timestamp(uint32_t timestamp)
 366{
 367        static char buffer[32];
 368
 369        if ((timestamp & 0xff000000) == 0xff000000)
 370                snprintf(buffer, sizeof(buffer), "boot + %us", timestamp &
 371                0x00ffffff);
 372        else
 373                snprintf(buffer, sizeof(buffer), "%us", timestamp);
 374        return buffer;
 375}
 376
 377static const char *
 378format_class(int8_t class)
 379{
 380        static char buffer[6];
 381
 382        switch (class) {
 383        case MFI_EVT_CLASS_DEBUG:
 384                return "debug";
 385        case MFI_EVT_CLASS_PROGRESS:
 386                return "progress";
 387        case MFI_EVT_CLASS_INFO:
 388                return "info";
 389        case MFI_EVT_CLASS_WARNING:
 390                return "WARN";
 391        case MFI_EVT_CLASS_CRITICAL:
 392                return "CRIT";
 393        case MFI_EVT_CLASS_FATAL:
 394                return "FATAL";
 395        case MFI_EVT_CLASS_DEAD:
 396                return "DEAD";
 397        default:
 398                snprintf(buffer, sizeof(buffer), "%d", class);
 399                return buffer;
 400        }
 401}
 402
 403/**
 404  * megasas_decode_evt: Decode FW AEN event and print critical event
 405  * for information.
 406  * @instance:                  Adapter soft state
 407  */
 408static void
 409megasas_decode_evt(struct megasas_instance *instance)
 410{
 411        struct megasas_evt_detail *evt_detail = instance->evt_detail;
 412        union megasas_evt_class_locale class_locale;
 413        class_locale.word = le32_to_cpu(evt_detail->cl.word);
 414
 415        if ((event_log_level < MFI_EVT_CLASS_DEBUG) ||
 416            (event_log_level > MFI_EVT_CLASS_DEAD)) {
 417                printk(KERN_WARNING "megaraid_sas: provided event log level is out of range, setting it to default 2(CLASS_CRITICAL), permissible range is: -2 to 4\n");
 418                event_log_level = MFI_EVT_CLASS_CRITICAL;
 419        }
 420
 421        if (class_locale.members.class >= event_log_level)
 422                dev_info(&instance->pdev->dev, "%d (%s/0x%04x/%s) - %s\n",
 423                        le32_to_cpu(evt_detail->seq_num),
 424                        format_timestamp(le32_to_cpu(evt_detail->time_stamp)),
 425                        (class_locale.members.locale),
 426                        format_class(class_locale.members.class),
 427                        evt_detail->description);
 428}
 429
 430/**
 431*       The following functions are defined for xscale
 432*       (deviceid : 1064R, PERC5) controllers
 433*/
 434
 435/**
 436 * megasas_enable_intr_xscale - Enables interrupts
 437 * @regs:                       MFI register set
 438 */
 439static inline void
 440megasas_enable_intr_xscale(struct megasas_instance *instance)
 441{
 442        struct megasas_register_set __iomem *regs;
 443
 444        regs = instance->reg_set;
 445        writel(0, &(regs)->outbound_intr_mask);
 446
 447        /* Dummy readl to force pci flush */
 448        readl(&regs->outbound_intr_mask);
 449}
 450
 451/**
 452 * megasas_disable_intr_xscale -Disables interrupt
 453 * @regs:                       MFI register set
 454 */
 455static inline void
 456megasas_disable_intr_xscale(struct megasas_instance *instance)
 457{
 458        struct megasas_register_set __iomem *regs;
 459        u32 mask = 0x1f;
 460
 461        regs = instance->reg_set;
 462        writel(mask, &regs->outbound_intr_mask);
 463        /* Dummy readl to force pci flush */
 464        readl(&regs->outbound_intr_mask);
 465}
 466
 467/**
 468 * megasas_read_fw_status_reg_xscale - returns the current FW status value
 469 * @regs:                       MFI register set
 470 */
 471static u32
 472megasas_read_fw_status_reg_xscale(struct megasas_instance *instance)
 473{
 474        return readl(&instance->reg_set->outbound_msg_0);
 475}
 476/**
 477 * megasas_clear_interrupt_xscale -     Check & clear interrupt
 478 * @regs:                               MFI register set
 479 */
 480static int
 481megasas_clear_intr_xscale(struct megasas_instance *instance)
 482{
 483        u32 status;
 484        u32 mfiStatus = 0;
 485        struct megasas_register_set __iomem *regs;
 486        regs = instance->reg_set;
 487
 488        /*
 489         * Check if it is our interrupt
 490         */
 491        status = readl(&regs->outbound_intr_status);
 492
 493        if (status & MFI_OB_INTR_STATUS_MASK)
 494                mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
 495        if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT)
 496                mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
 497
 498        /*
 499         * Clear the interrupt by writing back the same value
 500         */
 501        if (mfiStatus)
 502                writel(status, &regs->outbound_intr_status);
 503
 504        /* Dummy readl to force pci flush */
 505        readl(&regs->outbound_intr_status);
 506
 507        return mfiStatus;
 508}
 509
 510/**
 511 * megasas_fire_cmd_xscale -    Sends command to the FW
 512 * @frame_phys_addr :           Physical address of cmd
 513 * @frame_count :               Number of frames for the command
 514 * @regs :                      MFI register set
 515 */
 516static inline void
 517megasas_fire_cmd_xscale(struct megasas_instance *instance,
 518                dma_addr_t frame_phys_addr,
 519                u32 frame_count,
 520                struct megasas_register_set __iomem *regs)
 521{
 522        unsigned long flags;
 523
 524        spin_lock_irqsave(&instance->hba_lock, flags);
 525        writel((frame_phys_addr >> 3)|(frame_count),
 526               &(regs)->inbound_queue_port);
 527        spin_unlock_irqrestore(&instance->hba_lock, flags);
 528}
 529
 530/**
 531 * megasas_adp_reset_xscale -  For controller reset
 532 * @regs:                              MFI register set
 533 */
 534static int
 535megasas_adp_reset_xscale(struct megasas_instance *instance,
 536        struct megasas_register_set __iomem *regs)
 537{
 538        u32 i;
 539        u32 pcidata;
 540
 541        writel(MFI_ADP_RESET, &regs->inbound_doorbell);
 542
 543        for (i = 0; i < 3; i++)
 544                msleep(1000); /* sleep for 3 secs */
 545        pcidata  = 0;
 546        pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata);
 547        dev_notice(&instance->pdev->dev, "pcidata = %x\n", pcidata);
 548        if (pcidata & 0x2) {
 549                dev_notice(&instance->pdev->dev, "mfi 1068 offset read=%x\n", pcidata);
 550                pcidata &= ~0x2;
 551                pci_write_config_dword(instance->pdev,
 552                                MFI_1068_PCSR_OFFSET, pcidata);
 553
 554                for (i = 0; i < 2; i++)
 555                        msleep(1000); /* need to wait 2 secs again */
 556
 557                pcidata  = 0;
 558                pci_read_config_dword(instance->pdev,
 559                                MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata);
 560                dev_notice(&instance->pdev->dev, "1068 offset handshake read=%x\n", pcidata);
 561                if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) {
 562                        dev_notice(&instance->pdev->dev, "1068 offset pcidt=%x\n", pcidata);
 563                        pcidata = 0;
 564                        pci_write_config_dword(instance->pdev,
 565                                MFI_1068_FW_HANDSHAKE_OFFSET, pcidata);
 566                }
 567        }
 568        return 0;
 569}
 570
 571/**
 572 * megasas_check_reset_xscale - For controller reset check
 573 * @regs:                               MFI register set
 574 */
 575static int
 576megasas_check_reset_xscale(struct megasas_instance *instance,
 577                struct megasas_register_set __iomem *regs)
 578{
 579        if ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) &&
 580            (le32_to_cpu(*instance->consumer) ==
 581                MEGASAS_ADPRESET_INPROG_SIGN))
 582                return 1;
 583        return 0;
 584}
 585
 586static struct megasas_instance_template megasas_instance_template_xscale = {
 587
 588        .fire_cmd = megasas_fire_cmd_xscale,
 589        .enable_intr = megasas_enable_intr_xscale,
 590        .disable_intr = megasas_disable_intr_xscale,
 591        .clear_intr = megasas_clear_intr_xscale,
 592        .read_fw_status_reg = megasas_read_fw_status_reg_xscale,
 593        .adp_reset = megasas_adp_reset_xscale,
 594        .check_reset = megasas_check_reset_xscale,
 595        .service_isr = megasas_isr,
 596        .tasklet = megasas_complete_cmd_dpc,
 597        .init_adapter = megasas_init_adapter_mfi,
 598        .build_and_issue_cmd = megasas_build_and_issue_cmd,
 599        .issue_dcmd = megasas_issue_dcmd,
 600};
 601
 602/**
 603*       This is the end of set of functions & definitions specific
 604*       to xscale (deviceid : 1064R, PERC5) controllers
 605*/
 606
 607/**
 608*       The following functions are defined for ppc (deviceid : 0x60)
 609*       controllers
 610*/
 611
 612/**
 613 * megasas_enable_intr_ppc -    Enables interrupts
 614 * @regs:                       MFI register set
 615 */
 616static inline void
 617megasas_enable_intr_ppc(struct megasas_instance *instance)
 618{
 619        struct megasas_register_set __iomem *regs;
 620
 621        regs = instance->reg_set;
 622        writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
 623
 624        writel(~0x80000000, &(regs)->outbound_intr_mask);
 625
 626        /* Dummy readl to force pci flush */
 627        readl(&regs->outbound_intr_mask);
 628}
 629
 630/**
 631 * megasas_disable_intr_ppc -   Disable interrupt
 632 * @regs:                       MFI register set
 633 */
 634static inline void
 635megasas_disable_intr_ppc(struct megasas_instance *instance)
 636{
 637        struct megasas_register_set __iomem *regs;
 638        u32 mask = 0xFFFFFFFF;
 639
 640        regs = instance->reg_set;
 641        writel(mask, &regs->outbound_intr_mask);
 642        /* Dummy readl to force pci flush */
 643        readl(&regs->outbound_intr_mask);
 644}
 645
 646/**
 647 * megasas_read_fw_status_reg_ppc - returns the current FW status value
 648 * @regs:                       MFI register set
 649 */
 650static u32
 651megasas_read_fw_status_reg_ppc(struct megasas_instance *instance)
 652{
 653        return readl(&instance->reg_set->outbound_scratch_pad_0);
 654}
 655
 656/**
 657 * megasas_clear_interrupt_ppc -        Check & clear interrupt
 658 * @regs:                               MFI register set
 659 */
 660static int
 661megasas_clear_intr_ppc(struct megasas_instance *instance)
 662{
 663        u32 status, mfiStatus = 0;
 664        struct megasas_register_set __iomem *regs;
 665        regs = instance->reg_set;
 666
 667        /*
 668         * Check if it is our interrupt
 669         */
 670        status = readl(&regs->outbound_intr_status);
 671
 672        if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT)
 673                mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
 674
 675        if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT)
 676                mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
 677
 678        /*
 679         * Clear the interrupt by writing back the same value
 680         */
 681        writel(status, &regs->outbound_doorbell_clear);
 682
 683        /* Dummy readl to force pci flush */
 684        readl(&regs->outbound_doorbell_clear);
 685
 686        return mfiStatus;
 687}
 688
 689/**
 690 * megasas_fire_cmd_ppc -       Sends command to the FW
 691 * @frame_phys_addr :           Physical address of cmd
 692 * @frame_count :               Number of frames for the command
 693 * @regs :                      MFI register set
 694 */
 695static inline void
 696megasas_fire_cmd_ppc(struct megasas_instance *instance,
 697                dma_addr_t frame_phys_addr,
 698                u32 frame_count,
 699                struct megasas_register_set __iomem *regs)
 700{
 701        unsigned long flags;
 702
 703        spin_lock_irqsave(&instance->hba_lock, flags);
 704        writel((frame_phys_addr | (frame_count<<1))|1,
 705                        &(regs)->inbound_queue_port);
 706        spin_unlock_irqrestore(&instance->hba_lock, flags);
 707}
 708
 709/**
 710 * megasas_check_reset_ppc -    For controller reset check
 711 * @regs:                               MFI register set
 712 */
 713static int
 714megasas_check_reset_ppc(struct megasas_instance *instance,
 715                        struct megasas_register_set __iomem *regs)
 716{
 717        if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
 718                return 1;
 719
 720        return 0;
 721}
 722
 723static struct megasas_instance_template megasas_instance_template_ppc = {
 724
 725        .fire_cmd = megasas_fire_cmd_ppc,
 726        .enable_intr = megasas_enable_intr_ppc,
 727        .disable_intr = megasas_disable_intr_ppc,
 728        .clear_intr = megasas_clear_intr_ppc,
 729        .read_fw_status_reg = megasas_read_fw_status_reg_ppc,
 730        .adp_reset = megasas_adp_reset_xscale,
 731        .check_reset = megasas_check_reset_ppc,
 732        .service_isr = megasas_isr,
 733        .tasklet = megasas_complete_cmd_dpc,
 734        .init_adapter = megasas_init_adapter_mfi,
 735        .build_and_issue_cmd = megasas_build_and_issue_cmd,
 736        .issue_dcmd = megasas_issue_dcmd,
 737};
 738
 739/**
 740 * megasas_enable_intr_skinny - Enables interrupts
 741 * @regs:                       MFI register set
 742 */
 743static inline void
 744megasas_enable_intr_skinny(struct megasas_instance *instance)
 745{
 746        struct megasas_register_set __iomem *regs;
 747
 748        regs = instance->reg_set;
 749        writel(0xFFFFFFFF, &(regs)->outbound_intr_mask);
 750
 751        writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
 752
 753        /* Dummy readl to force pci flush */
 754        readl(&regs->outbound_intr_mask);
 755}
 756
 757/**
 758 * megasas_disable_intr_skinny -        Disables interrupt
 759 * @regs:                       MFI register set
 760 */
 761static inline void
 762megasas_disable_intr_skinny(struct megasas_instance *instance)
 763{
 764        struct megasas_register_set __iomem *regs;
 765        u32 mask = 0xFFFFFFFF;
 766
 767        regs = instance->reg_set;
 768        writel(mask, &regs->outbound_intr_mask);
 769        /* Dummy readl to force pci flush */
 770        readl(&regs->outbound_intr_mask);
 771}
 772
 773/**
 774 * megasas_read_fw_status_reg_skinny - returns the current FW status value
 775 * @regs:                       MFI register set
 776 */
 777static u32
 778megasas_read_fw_status_reg_skinny(struct megasas_instance *instance)
 779{
 780        return readl(&instance->reg_set->outbound_scratch_pad_0);
 781}
 782
 783/**
 784 * megasas_clear_interrupt_skinny -     Check & clear interrupt
 785 * @regs:                               MFI register set
 786 */
 787static int
 788megasas_clear_intr_skinny(struct megasas_instance *instance)
 789{
 790        u32 status;
 791        u32 mfiStatus = 0;
 792        struct megasas_register_set __iomem *regs;
 793        regs = instance->reg_set;
 794
 795        /*
 796         * Check if it is our interrupt
 797         */
 798        status = readl(&regs->outbound_intr_status);
 799
 800        if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) {
 801                return 0;
 802        }
 803
 804        /*
 805         * Check if it is our interrupt
 806         */
 807        if ((megasas_read_fw_status_reg_skinny(instance) & MFI_STATE_MASK) ==
 808            MFI_STATE_FAULT) {
 809                mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
 810        } else
 811                mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
 812
 813        /*
 814         * Clear the interrupt by writing back the same value
 815         */
 816        writel(status, &regs->outbound_intr_status);
 817
 818        /*
 819         * dummy read to flush PCI
 820         */
 821        readl(&regs->outbound_intr_status);
 822
 823        return mfiStatus;
 824}
 825
 826/**
 827 * megasas_fire_cmd_skinny -    Sends command to the FW
 828 * @frame_phys_addr :           Physical address of cmd
 829 * @frame_count :               Number of frames for the command
 830 * @regs :                      MFI register set
 831 */
 832static inline void
 833megasas_fire_cmd_skinny(struct megasas_instance *instance,
 834                        dma_addr_t frame_phys_addr,
 835                        u32 frame_count,
 836                        struct megasas_register_set __iomem *regs)
 837{
 838        unsigned long flags;
 839
 840        spin_lock_irqsave(&instance->hba_lock, flags);
 841        writel(upper_32_bits(frame_phys_addr),
 842               &(regs)->inbound_high_queue_port);
 843        writel((lower_32_bits(frame_phys_addr) | (frame_count<<1))|1,
 844               &(regs)->inbound_low_queue_port);
 845        spin_unlock_irqrestore(&instance->hba_lock, flags);
 846}
 847
 848/**
 849 * megasas_check_reset_skinny - For controller reset check
 850 * @regs:                               MFI register set
 851 */
 852static int
 853megasas_check_reset_skinny(struct megasas_instance *instance,
 854                                struct megasas_register_set __iomem *regs)
 855{
 856        if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
 857                return 1;
 858
 859        return 0;
 860}
 861
 862static struct megasas_instance_template megasas_instance_template_skinny = {
 863
 864        .fire_cmd = megasas_fire_cmd_skinny,
 865        .enable_intr = megasas_enable_intr_skinny,
 866        .disable_intr = megasas_disable_intr_skinny,
 867        .clear_intr = megasas_clear_intr_skinny,
 868        .read_fw_status_reg = megasas_read_fw_status_reg_skinny,
 869        .adp_reset = megasas_adp_reset_gen2,
 870        .check_reset = megasas_check_reset_skinny,
 871        .service_isr = megasas_isr,
 872        .tasklet = megasas_complete_cmd_dpc,
 873        .init_adapter = megasas_init_adapter_mfi,
 874        .build_and_issue_cmd = megasas_build_and_issue_cmd,
 875        .issue_dcmd = megasas_issue_dcmd,
 876};
 877
 878
 879/**
 880*       The following functions are defined for gen2 (deviceid : 0x78 0x79)
 881*       controllers
 882*/
 883
 884/**
 885 * megasas_enable_intr_gen2 -  Enables interrupts
 886 * @regs:                      MFI register set
 887 */
 888static inline void
 889megasas_enable_intr_gen2(struct megasas_instance *instance)
 890{
 891        struct megasas_register_set __iomem *regs;
 892
 893        regs = instance->reg_set;
 894        writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
 895
 896        /* write ~0x00000005 (4 & 1) to the intr mask*/
 897        writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
 898
 899        /* Dummy readl to force pci flush */
 900        readl(&regs->outbound_intr_mask);
 901}
 902
 903/**
 904 * megasas_disable_intr_gen2 - Disables interrupt
 905 * @regs:                      MFI register set
 906 */
 907static inline void
 908megasas_disable_intr_gen2(struct megasas_instance *instance)
 909{
 910        struct megasas_register_set __iomem *regs;
 911        u32 mask = 0xFFFFFFFF;
 912
 913        regs = instance->reg_set;
 914        writel(mask, &regs->outbound_intr_mask);
 915        /* Dummy readl to force pci flush */
 916        readl(&regs->outbound_intr_mask);
 917}
 918
 919/**
 920 * megasas_read_fw_status_reg_gen2 - returns the current FW status value
 921 * @regs:                      MFI register set
 922 */
 923static u32
 924megasas_read_fw_status_reg_gen2(struct megasas_instance *instance)
 925{
 926        return readl(&instance->reg_set->outbound_scratch_pad_0);
 927}
 928
 929/**
 930 * megasas_clear_interrupt_gen2 -      Check & clear interrupt
 931 * @regs:                              MFI register set
 932 */
 933static int
 934megasas_clear_intr_gen2(struct megasas_instance *instance)
 935{
 936        u32 status;
 937        u32 mfiStatus = 0;
 938        struct megasas_register_set __iomem *regs;
 939        regs = instance->reg_set;
 940
 941        /*
 942         * Check if it is our interrupt
 943         */
 944        status = readl(&regs->outbound_intr_status);
 945
 946        if (status & MFI_INTR_FLAG_REPLY_MESSAGE) {
 947                mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
 948        }
 949        if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) {
 950                mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
 951        }
 952
 953        /*
 954         * Clear the interrupt by writing back the same value
 955         */
 956        if (mfiStatus)
 957                writel(status, &regs->outbound_doorbell_clear);
 958
 959        /* Dummy readl to force pci flush */
 960        readl(&regs->outbound_intr_status);
 961
 962        return mfiStatus;
 963}
 964/**
 965 * megasas_fire_cmd_gen2 -     Sends command to the FW
 966 * @frame_phys_addr :          Physical address of cmd
 967 * @frame_count :              Number of frames for the command
 968 * @regs :                     MFI register set
 969 */
 970static inline void
 971megasas_fire_cmd_gen2(struct megasas_instance *instance,
 972                        dma_addr_t frame_phys_addr,
 973                        u32 frame_count,
 974                        struct megasas_register_set __iomem *regs)
 975{
 976        unsigned long flags;
 977
 978        spin_lock_irqsave(&instance->hba_lock, flags);
 979        writel((frame_phys_addr | (frame_count<<1))|1,
 980                        &(regs)->inbound_queue_port);
 981        spin_unlock_irqrestore(&instance->hba_lock, flags);
 982}
 983
 984/**
 985 * megasas_adp_reset_gen2 -     For controller reset
 986 * @regs:                               MFI register set
 987 */
 988static int
 989megasas_adp_reset_gen2(struct megasas_instance *instance,
 990                        struct megasas_register_set __iomem *reg_set)
 991{
 992        u32 retry = 0 ;
 993        u32 HostDiag;
 994        u32 __iomem *seq_offset = &reg_set->seq_offset;
 995        u32 __iomem *hostdiag_offset = &reg_set->host_diag;
 996
 997        if (instance->instancet == &megasas_instance_template_skinny) {
 998                seq_offset = &reg_set->fusion_seq_offset;
 999                hostdiag_offset = &reg_set->fusion_host_diag;
1000        }
1001
1002        writel(0, seq_offset);
1003        writel(4, seq_offset);
1004        writel(0xb, seq_offset);
1005        writel(2, seq_offset);
1006        writel(7, seq_offset);
1007        writel(0xd, seq_offset);
1008
1009        msleep(1000);
1010
1011        HostDiag = (u32)readl(hostdiag_offset);
1012
1013        while (!(HostDiag & DIAG_WRITE_ENABLE)) {
1014                msleep(100);
1015                HostDiag = (u32)readl(hostdiag_offset);
1016                dev_notice(&instance->pdev->dev, "RESETGEN2: retry=%x, hostdiag=%x\n",
1017                                        retry, HostDiag);
1018
1019                if (retry++ >= 100)
1020                        return 1;
1021
1022        }
1023
1024        dev_notice(&instance->pdev->dev, "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag);
1025
1026        writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset);
1027
1028        ssleep(10);
1029
1030        HostDiag = (u32)readl(hostdiag_offset);
1031        while (HostDiag & DIAG_RESET_ADAPTER) {
1032                msleep(100);
1033                HostDiag = (u32)readl(hostdiag_offset);
1034                dev_notice(&instance->pdev->dev, "RESET_GEN2: retry=%x, hostdiag=%x\n",
1035                                retry, HostDiag);
1036
1037                if (retry++ >= 1000)
1038                        return 1;
1039
1040        }
1041        return 0;
1042}
1043
1044/**
1045 * megasas_check_reset_gen2 -   For controller reset check
1046 * @regs:                               MFI register set
1047 */
1048static int
1049megasas_check_reset_gen2(struct megasas_instance *instance,
1050                struct megasas_register_set __iomem *regs)
1051{
1052        if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
1053                return 1;
1054
1055        return 0;
1056}
1057
1058static struct megasas_instance_template megasas_instance_template_gen2 = {
1059
1060        .fire_cmd = megasas_fire_cmd_gen2,
1061        .enable_intr = megasas_enable_intr_gen2,
1062        .disable_intr = megasas_disable_intr_gen2,
1063        .clear_intr = megasas_clear_intr_gen2,
1064        .read_fw_status_reg = megasas_read_fw_status_reg_gen2,
1065        .adp_reset = megasas_adp_reset_gen2,
1066        .check_reset = megasas_check_reset_gen2,
1067        .service_isr = megasas_isr,
1068        .tasklet = megasas_complete_cmd_dpc,
1069        .init_adapter = megasas_init_adapter_mfi,
1070        .build_and_issue_cmd = megasas_build_and_issue_cmd,
1071        .issue_dcmd = megasas_issue_dcmd,
1072};
1073
1074/**
1075*       This is the end of set of functions & definitions
1076*       specific to gen2 (deviceid : 0x78, 0x79) controllers
1077*/
1078
1079/*
1080 * Template added for TB (Fusion)
1081 */
1082extern struct megasas_instance_template megasas_instance_template_fusion;
1083
1084/**
1085 * megasas_issue_polled -       Issues a polling command
1086 * @instance:                   Adapter soft state
1087 * @cmd:                        Command packet to be issued
1088 *
1089 * For polling, MFI requires the cmd_status to be set to MFI_STAT_INVALID_STATUS before posting.
1090 */
1091int
1092megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
1093{
1094        struct megasas_header *frame_hdr = &cmd->frame->hdr;
1095
1096        frame_hdr->cmd_status = MFI_STAT_INVALID_STATUS;
1097        frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
1098
1099        if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1100                dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1101                        __func__, __LINE__);
1102                return DCMD_INIT;
1103        }
1104
1105        instance->instancet->issue_dcmd(instance, cmd);
1106
1107        return wait_and_poll(instance, cmd, instance->requestorId ?
1108                        MEGASAS_ROUTINE_WAIT_TIME_VF : MFI_IO_TIMEOUT_SECS);
1109}
1110
1111/**
1112 * megasas_issue_blocked_cmd -  Synchronous wrapper around regular FW cmds
1113 * @instance:                   Adapter soft state
1114 * @cmd:                        Command to be issued
1115 * @timeout:                    Timeout in seconds
1116 *
1117 * This function waits on an event for the command to be returned from ISR.
1118 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1119 * Used to issue ioctl commands.
1120 */
1121int
1122megasas_issue_blocked_cmd(struct megasas_instance *instance,
1123                          struct megasas_cmd *cmd, int timeout)
1124{
1125        int ret = 0;
1126        cmd->cmd_status_drv = DCMD_INIT;
1127
1128        if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1129                dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1130                        __func__, __LINE__);
1131                return DCMD_INIT;
1132        }
1133
1134        instance->instancet->issue_dcmd(instance, cmd);
1135
1136        if (timeout) {
1137                ret = wait_event_timeout(instance->int_cmd_wait_q,
1138                cmd->cmd_status_drv != DCMD_INIT, timeout * HZ);
1139                if (!ret) {
1140                        dev_err(&instance->pdev->dev,
1141                                "DCMD(opcode: 0x%x) is timed out, func:%s\n",
1142                                cmd->frame->dcmd.opcode, __func__);
1143                        return DCMD_TIMEOUT;
1144                }
1145        } else
1146                wait_event(instance->int_cmd_wait_q,
1147                                cmd->cmd_status_drv != DCMD_INIT);
1148
1149        return cmd->cmd_status_drv;
1150}
1151
1152/**
1153 * megasas_issue_blocked_abort_cmd -    Aborts previously issued cmd
1154 * @instance:                           Adapter soft state
1155 * @cmd_to_abort:                       Previously issued cmd to be aborted
1156 * @timeout:                            Timeout in seconds
1157 *
1158 * MFI firmware can abort previously issued AEN comamnd (automatic event
1159 * notification). The megasas_issue_blocked_abort_cmd() issues such abort
1160 * cmd and waits for return status.
1161 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1162 */
1163static int
1164megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
1165                                struct megasas_cmd *cmd_to_abort, int timeout)
1166{
1167        struct megasas_cmd *cmd;
1168        struct megasas_abort_frame *abort_fr;
1169        int ret = 0;
1170        u32 opcode;
1171
1172        cmd = megasas_get_cmd(instance);
1173
1174        if (!cmd)
1175                return -1;
1176
1177        abort_fr = &cmd->frame->abort;
1178
1179        /*
1180         * Prepare and issue the abort frame
1181         */
1182        abort_fr->cmd = MFI_CMD_ABORT;
1183        abort_fr->cmd_status = MFI_STAT_INVALID_STATUS;
1184        abort_fr->flags = cpu_to_le16(0);
1185        abort_fr->abort_context = cpu_to_le32(cmd_to_abort->index);
1186        abort_fr->abort_mfi_phys_addr_lo =
1187                cpu_to_le32(lower_32_bits(cmd_to_abort->frame_phys_addr));
1188        abort_fr->abort_mfi_phys_addr_hi =
1189                cpu_to_le32(upper_32_bits(cmd_to_abort->frame_phys_addr));
1190
1191        cmd->sync_cmd = 1;
1192        cmd->cmd_status_drv = DCMD_INIT;
1193
1194        if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1195                dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1196                        __func__, __LINE__);
1197                return DCMD_INIT;
1198        }
1199
1200        instance->instancet->issue_dcmd(instance, cmd);
1201
1202        if (timeout) {
1203                ret = wait_event_timeout(instance->abort_cmd_wait_q,
1204                cmd->cmd_status_drv != DCMD_INIT, timeout * HZ);
1205                if (!ret) {
1206                        opcode = cmd_to_abort->frame->dcmd.opcode;
1207                        dev_err(&instance->pdev->dev,
1208                                "Abort(to be aborted DCMD opcode: 0x%x) is timed out func:%s\n",
1209                                opcode,  __func__);
1210                        return DCMD_TIMEOUT;
1211                }
1212        } else
1213                wait_event(instance->abort_cmd_wait_q,
1214                cmd->cmd_status_drv != DCMD_INIT);
1215
1216        cmd->sync_cmd = 0;
1217
1218        megasas_return_cmd(instance, cmd);
1219        return cmd->cmd_status_drv;
1220}
1221
1222/**
1223 * megasas_make_sgl32 - Prepares 32-bit SGL
1224 * @instance:           Adapter soft state
1225 * @scp:                SCSI command from the mid-layer
1226 * @mfi_sgl:            SGL to be filled in
1227 *
1228 * If successful, this function returns the number of SG elements. Otherwise,
1229 * it returnes -1.
1230 */
1231static int
1232megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp,
1233                   union megasas_sgl *mfi_sgl)
1234{
1235        int i;
1236        int sge_count;
1237        struct scatterlist *os_sgl;
1238
1239        sge_count = scsi_dma_map(scp);
1240        BUG_ON(sge_count < 0);
1241
1242        if (sge_count) {
1243                scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1244                        mfi_sgl->sge32[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1245                        mfi_sgl->sge32[i].phys_addr = cpu_to_le32(sg_dma_address(os_sgl));
1246                }
1247        }
1248        return sge_count;
1249}
1250
1251/**
1252 * megasas_make_sgl64 - Prepares 64-bit SGL
1253 * @instance:           Adapter soft state
1254 * @scp:                SCSI command from the mid-layer
1255 * @mfi_sgl:            SGL to be filled in
1256 *
1257 * If successful, this function returns the number of SG elements. Otherwise,
1258 * it returnes -1.
1259 */
1260static int
1261megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp,
1262                   union megasas_sgl *mfi_sgl)
1263{
1264        int i;
1265        int sge_count;
1266        struct scatterlist *os_sgl;
1267
1268        sge_count = scsi_dma_map(scp);
1269        BUG_ON(sge_count < 0);
1270
1271        if (sge_count) {
1272                scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1273                        mfi_sgl->sge64[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1274                        mfi_sgl->sge64[i].phys_addr = cpu_to_le64(sg_dma_address(os_sgl));
1275                }
1276        }
1277        return sge_count;
1278}
1279
1280/**
1281 * megasas_make_sgl_skinny - Prepares IEEE SGL
1282 * @instance:           Adapter soft state
1283 * @scp:                SCSI command from the mid-layer
1284 * @mfi_sgl:            SGL to be filled in
1285 *
1286 * If successful, this function returns the number of SG elements. Otherwise,
1287 * it returnes -1.
1288 */
1289static int
1290megasas_make_sgl_skinny(struct megasas_instance *instance,
1291                struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)
1292{
1293        int i;
1294        int sge_count;
1295        struct scatterlist *os_sgl;
1296
1297        sge_count = scsi_dma_map(scp);
1298
1299        if (sge_count) {
1300                scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1301                        mfi_sgl->sge_skinny[i].length =
1302                                cpu_to_le32(sg_dma_len(os_sgl));
1303                        mfi_sgl->sge_skinny[i].phys_addr =
1304                                cpu_to_le64(sg_dma_address(os_sgl));
1305                        mfi_sgl->sge_skinny[i].flag = cpu_to_le32(0);
1306                }
1307        }
1308        return sge_count;
1309}
1310
1311 /**
1312 * megasas_get_frame_count - Computes the number of frames
1313 * @frame_type          : type of frame- io or pthru frame
1314 * @sge_count           : number of sg elements
1315 *
1316 * Returns the number of frames required for numnber of sge's (sge_count)
1317 */
1318
1319static u32 megasas_get_frame_count(struct megasas_instance *instance,
1320                        u8 sge_count, u8 frame_type)
1321{
1322        int num_cnt;
1323        int sge_bytes;
1324        u32 sge_sz;
1325        u32 frame_count = 0;
1326
1327        sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
1328            sizeof(struct megasas_sge32);
1329
1330        if (instance->flag_ieee) {
1331                sge_sz = sizeof(struct megasas_sge_skinny);
1332        }
1333
1334        /*
1335         * Main frame can contain 2 SGEs for 64-bit SGLs and
1336         * 3 SGEs for 32-bit SGLs for ldio &
1337         * 1 SGEs for 64-bit SGLs and
1338         * 2 SGEs for 32-bit SGLs for pthru frame
1339         */
1340        if (unlikely(frame_type == PTHRU_FRAME)) {
1341                if (instance->flag_ieee == 1) {
1342                        num_cnt = sge_count - 1;
1343                } else if (IS_DMA64)
1344                        num_cnt = sge_count - 1;
1345                else
1346                        num_cnt = sge_count - 2;
1347        } else {
1348                if (instance->flag_ieee == 1) {
1349                        num_cnt = sge_count - 1;
1350                } else if (IS_DMA64)
1351                        num_cnt = sge_count - 2;
1352                else
1353                        num_cnt = sge_count - 3;
1354        }
1355
1356        if (num_cnt > 0) {
1357                sge_bytes = sge_sz * num_cnt;
1358
1359                frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
1360                    ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ;
1361        }
1362        /* Main frame */
1363        frame_count += 1;
1364
1365        if (frame_count > 7)
1366                frame_count = 8;
1367        return frame_count;
1368}
1369
1370/**
1371 * megasas_build_dcdb - Prepares a direct cdb (DCDB) command
1372 * @instance:           Adapter soft state
1373 * @scp:                SCSI command
1374 * @cmd:                Command to be prepared in
1375 *
1376 * This function prepares CDB commands. These are typcially pass-through
1377 * commands to the devices.
1378 */
1379static int
1380megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
1381                   struct megasas_cmd *cmd)
1382{
1383        u32 is_logical;
1384        u32 device_id;
1385        u16 flags = 0;
1386        struct megasas_pthru_frame *pthru;
1387
1388        is_logical = MEGASAS_IS_LOGICAL(scp->device);
1389        device_id = MEGASAS_DEV_INDEX(scp);
1390        pthru = (struct megasas_pthru_frame *)cmd->frame;
1391
1392        if (scp->sc_data_direction == DMA_TO_DEVICE)
1393                flags = MFI_FRAME_DIR_WRITE;
1394        else if (scp->sc_data_direction == DMA_FROM_DEVICE)
1395                flags = MFI_FRAME_DIR_READ;
1396        else if (scp->sc_data_direction == DMA_NONE)
1397                flags = MFI_FRAME_DIR_NONE;
1398
1399        if (instance->flag_ieee == 1) {
1400                flags |= MFI_FRAME_IEEE;
1401        }
1402
1403        /*
1404         * Prepare the DCDB frame
1405         */
1406        pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO;
1407        pthru->cmd_status = 0x0;
1408        pthru->scsi_status = 0x0;
1409        pthru->target_id = device_id;
1410        pthru->lun = scp->device->lun;
1411        pthru->cdb_len = scp->cmd_len;
1412        pthru->timeout = 0;
1413        pthru->pad_0 = 0;
1414        pthru->flags = cpu_to_le16(flags);
1415        pthru->data_xfer_len = cpu_to_le32(scsi_bufflen(scp));
1416
1417        memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
1418
1419        /*
1420         * If the command is for the tape device, set the
1421         * pthru timeout to the os layer timeout value.
1422         */
1423        if (scp->device->type == TYPE_TAPE) {
1424                if ((scp->request->timeout / HZ) > 0xFFFF)
1425                        pthru->timeout = cpu_to_le16(0xFFFF);
1426                else
1427                        pthru->timeout = cpu_to_le16(scp->request->timeout / HZ);
1428        }
1429
1430        /*
1431         * Construct SGL
1432         */
1433        if (instance->flag_ieee == 1) {
1434                pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1435                pthru->sge_count = megasas_make_sgl_skinny(instance, scp,
1436                                                      &pthru->sgl);
1437        } else if (IS_DMA64) {
1438                pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1439                pthru->sge_count = megasas_make_sgl64(instance, scp,
1440                                                      &pthru->sgl);
1441        } else
1442                pthru->sge_count = megasas_make_sgl32(instance, scp,
1443                                                      &pthru->sgl);
1444
1445        if (pthru->sge_count > instance->max_num_sge) {
1446                dev_err(&instance->pdev->dev, "DCDB too many SGE NUM=%x\n",
1447                        pthru->sge_count);
1448                return 0;
1449        }
1450
1451        /*
1452         * Sense info specific
1453         */
1454        pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
1455        pthru->sense_buf_phys_addr_hi =
1456                cpu_to_le32(upper_32_bits(cmd->sense_phys_addr));
1457        pthru->sense_buf_phys_addr_lo =
1458                cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
1459
1460        /*
1461         * Compute the total number of frames this command consumes. FW uses
1462         * this number to pull sufficient number of frames from host memory.
1463         */
1464        cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count,
1465                                                        PTHRU_FRAME);
1466
1467        return cmd->frame_count;
1468}
1469
1470/**
1471 * megasas_build_ldio - Prepares IOs to logical devices
1472 * @instance:           Adapter soft state
1473 * @scp:                SCSI command
1474 * @cmd:                Command to be prepared
1475 *
1476 * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
1477 */
1478static int
1479megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
1480                   struct megasas_cmd *cmd)
1481{
1482        u32 device_id;
1483        u8 sc = scp->cmnd[0];
1484        u16 flags = 0;
1485        struct megasas_io_frame *ldio;
1486
1487        device_id = MEGASAS_DEV_INDEX(scp);
1488        ldio = (struct megasas_io_frame *)cmd->frame;
1489
1490        if (scp->sc_data_direction == DMA_TO_DEVICE)
1491                flags = MFI_FRAME_DIR_WRITE;
1492        else if (scp->sc_data_direction == DMA_FROM_DEVICE)
1493                flags = MFI_FRAME_DIR_READ;
1494
1495        if (instance->flag_ieee == 1) {
1496                flags |= MFI_FRAME_IEEE;
1497        }
1498
1499        /*
1500         * Prepare the Logical IO frame: 2nd bit is zero for all read cmds
1501         */
1502        ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ;
1503        ldio->cmd_status = 0x0;
1504        ldio->scsi_status = 0x0;
1505        ldio->target_id = device_id;
1506        ldio->timeout = 0;
1507        ldio->reserved_0 = 0;
1508        ldio->pad_0 = 0;
1509        ldio->flags = cpu_to_le16(flags);
1510        ldio->start_lba_hi = 0;
1511        ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;
1512
1513        /*
1514         * 6-byte READ(0x08) or WRITE(0x0A) cdb
1515         */
1516        if (scp->cmd_len == 6) {
1517                ldio->lba_count = cpu_to_le32((u32) scp->cmnd[4]);
1518                ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[1] << 16) |
1519                                                 ((u32) scp->cmnd[2] << 8) |
1520                                                 (u32) scp->cmnd[3]);
1521
1522                ldio->start_lba_lo &= cpu_to_le32(0x1FFFFF);
1523        }
1524
1525        /*
1526         * 10-byte READ(0x28) or WRITE(0x2A) cdb
1527         */
1528        else if (scp->cmd_len == 10) {
1529                ldio->lba_count = cpu_to_le32((u32) scp->cmnd[8] |
1530                                              ((u32) scp->cmnd[7] << 8));
1531                ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1532                                                 ((u32) scp->cmnd[3] << 16) |
1533                                                 ((u32) scp->cmnd[4] << 8) |
1534                                                 (u32) scp->cmnd[5]);
1535        }
1536
1537        /*
1538         * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1539         */
1540        else if (scp->cmd_len == 12) {
1541                ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1542                                              ((u32) scp->cmnd[7] << 16) |
1543                                              ((u32) scp->cmnd[8] << 8) |
1544                                              (u32) scp->cmnd[9]);
1545
1546                ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1547                                                 ((u32) scp->cmnd[3] << 16) |
1548                                                 ((u32) scp->cmnd[4] << 8) |
1549                                                 (u32) scp->cmnd[5]);
1550        }
1551
1552        /*
1553         * 16-byte READ(0x88) or WRITE(0x8A) cdb
1554         */
1555        else if (scp->cmd_len == 16) {
1556                ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[10] << 24) |
1557                                              ((u32) scp->cmnd[11] << 16) |
1558                                              ((u32) scp->cmnd[12] << 8) |
1559                                              (u32) scp->cmnd[13]);
1560
1561                ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1562                                                 ((u32) scp->cmnd[7] << 16) |
1563                                                 ((u32) scp->cmnd[8] << 8) |
1564                                                 (u32) scp->cmnd[9]);
1565
1566                ldio->start_lba_hi = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1567                                                 ((u32) scp->cmnd[3] << 16) |
1568                                                 ((u32) scp->cmnd[4] << 8) |
1569                                                 (u32) scp->cmnd[5]);
1570
1571        }
1572
1573        /*
1574         * Construct SGL
1575         */
1576        if (instance->flag_ieee) {
1577                ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1578                ldio->sge_count = megasas_make_sgl_skinny(instance, scp,
1579                                              &ldio->sgl);
1580        } else if (IS_DMA64) {
1581                ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1582                ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl);
1583        } else
1584                ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl);
1585
1586        if (ldio->sge_count > instance->max_num_sge) {
1587                dev_err(&instance->pdev->dev, "build_ld_io: sge_count = %x\n",
1588                        ldio->sge_count);
1589                return 0;
1590        }
1591
1592        /*
1593         * Sense info specific
1594         */
1595        ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
1596        ldio->sense_buf_phys_addr_hi = 0;
1597        ldio->sense_buf_phys_addr_lo = cpu_to_le32(cmd->sense_phys_addr);
1598
1599        /*
1600         * Compute the total number of frames this command consumes. FW uses
1601         * this number to pull sufficient number of frames from host memory.
1602         */
1603        cmd->frame_count = megasas_get_frame_count(instance,
1604                        ldio->sge_count, IO_FRAME);
1605
1606        return cmd->frame_count;
1607}
1608
1609/**
1610 * megasas_cmd_type -           Checks if the cmd is for logical drive/sysPD
1611 *                              and whether it's RW or non RW
1612 * @scmd:                       SCSI command
1613 *
1614 */
1615inline int megasas_cmd_type(struct scsi_cmnd *cmd)
1616{
1617        int ret;
1618
1619        switch (cmd->cmnd[0]) {
1620        case READ_10:
1621        case WRITE_10:
1622        case READ_12:
1623        case WRITE_12:
1624        case READ_6:
1625        case WRITE_6:
1626        case READ_16:
1627        case WRITE_16:
1628                ret = (MEGASAS_IS_LOGICAL(cmd->device)) ?
1629                        READ_WRITE_LDIO : READ_WRITE_SYSPDIO;
1630                break;
1631        default:
1632                ret = (MEGASAS_IS_LOGICAL(cmd->device)) ?
1633                        NON_READ_WRITE_LDIO : NON_READ_WRITE_SYSPDIO;
1634        }
1635        return ret;
1636}
1637
1638 /**
1639 * megasas_dump_pending_frames -        Dumps the frame address of all pending cmds
1640 *                                      in FW
1641 * @instance:                           Adapter soft state
1642 */
1643static inline void
1644megasas_dump_pending_frames(struct megasas_instance *instance)
1645{
1646        struct megasas_cmd *cmd;
1647        int i,n;
1648        union megasas_sgl *mfi_sgl;
1649        struct megasas_io_frame *ldio;
1650        struct megasas_pthru_frame *pthru;
1651        u32 sgcount;
1652        u16 max_cmd = instance->max_fw_cmds;
1653
1654        dev_err(&instance->pdev->dev, "[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no);
1655        dev_err(&instance->pdev->dev, "[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding));
1656        if (IS_DMA64)
1657                dev_err(&instance->pdev->dev, "[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no);
1658        else
1659                dev_err(&instance->pdev->dev, "[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no);
1660
1661        dev_err(&instance->pdev->dev, "[%d]: Pending OS cmds in FW : \n",instance->host->host_no);
1662        for (i = 0; i < max_cmd; i++) {
1663                cmd = instance->cmd_list[i];
1664                if (!cmd->scmd)
1665                        continue;
1666                dev_err(&instance->pdev->dev, "[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr);
1667                if (megasas_cmd_type(cmd->scmd) == READ_WRITE_LDIO) {
1668                        ldio = (struct megasas_io_frame *)cmd->frame;
1669                        mfi_sgl = &ldio->sgl;
1670                        sgcount = ldio->sge_count;
1671                        dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x,"
1672                        " lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1673                        instance->host->host_no, cmd->frame_count, ldio->cmd, ldio->target_id,
1674                        le32_to_cpu(ldio->start_lba_lo), le32_to_cpu(ldio->start_lba_hi),
1675                        le32_to_cpu(ldio->sense_buf_phys_addr_lo), sgcount);
1676                } else {
1677                        pthru = (struct megasas_pthru_frame *) cmd->frame;
1678                        mfi_sgl = &pthru->sgl;
1679                        sgcount = pthru->sge_count;
1680                        dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, "
1681                        "lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1682                        instance->host->host_no, cmd->frame_count, pthru->cmd, pthru->target_id,
1683                        pthru->lun, pthru->cdb_len, le32_to_cpu(pthru->data_xfer_len),
1684                        le32_to_cpu(pthru->sense_buf_phys_addr_lo), sgcount);
1685                }
1686                if (megasas_dbg_lvl & MEGASAS_DBG_LVL) {
1687                        for (n = 0; n < sgcount; n++) {
1688                                if (IS_DMA64)
1689                                        dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%llx\n",
1690                                                le32_to_cpu(mfi_sgl->sge64[n].length),
1691                                                le64_to_cpu(mfi_sgl->sge64[n].phys_addr));
1692                                else
1693                                        dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%x\n",
1694                                                le32_to_cpu(mfi_sgl->sge32[n].length),
1695                                                le32_to_cpu(mfi_sgl->sge32[n].phys_addr));
1696                        }
1697                }
1698        } /*for max_cmd*/
1699        dev_err(&instance->pdev->dev, "[%d]: Pending Internal cmds in FW : \n",instance->host->host_no);
1700        for (i = 0; i < max_cmd; i++) {
1701
1702                cmd = instance->cmd_list[i];
1703
1704                if (cmd->sync_cmd == 1)
1705                        dev_err(&instance->pdev->dev, "0x%08lx : ", (unsigned long)cmd->frame_phys_addr);
1706        }
1707        dev_err(&instance->pdev->dev, "[%d]: Dumping Done\n\n",instance->host->host_no);
1708}
1709
1710u32
1711megasas_build_and_issue_cmd(struct megasas_instance *instance,
1712                            struct scsi_cmnd *scmd)
1713{
1714        struct megasas_cmd *cmd;
1715        u32 frame_count;
1716
1717        cmd = megasas_get_cmd(instance);
1718        if (!cmd)
1719                return SCSI_MLQUEUE_HOST_BUSY;
1720
1721        /*
1722         * Logical drive command
1723         */
1724        if (megasas_cmd_type(scmd) == READ_WRITE_LDIO)
1725                frame_count = megasas_build_ldio(instance, scmd, cmd);
1726        else
1727                frame_count = megasas_build_dcdb(instance, scmd, cmd);
1728
1729        if (!frame_count)
1730                goto out_return_cmd;
1731
1732        cmd->scmd = scmd;
1733        scmd->SCp.ptr = (char *)cmd;
1734
1735        /*
1736         * Issue the command to the FW
1737         */
1738        atomic_inc(&instance->fw_outstanding);
1739
1740        instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
1741                                cmd->frame_count-1, instance->reg_set);
1742
1743        return 0;
1744out_return_cmd:
1745        megasas_return_cmd(instance, cmd);
1746        return SCSI_MLQUEUE_HOST_BUSY;
1747}
1748
1749
1750/**
1751 * megasas_queue_command -      Queue entry point
1752 * @scmd:                       SCSI command to be queued
1753 * @done:                       Callback entry point
1754 */
1755static int
1756megasas_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
1757{
1758        struct megasas_instance *instance;
1759        struct MR_PRIV_DEVICE *mr_device_priv_data;
1760
1761        instance = (struct megasas_instance *)
1762            scmd->device->host->hostdata;
1763
1764        if (instance->unload == 1) {
1765                scmd->result = DID_NO_CONNECT << 16;
1766                scmd->scsi_done(scmd);
1767                return 0;
1768        }
1769
1770        if (instance->issuepend_done == 0)
1771                return SCSI_MLQUEUE_HOST_BUSY;
1772
1773
1774        /* Check for an mpio path and adjust behavior */
1775        if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
1776                if (megasas_check_mpio_paths(instance, scmd) ==
1777                    (DID_REQUEUE << 16)) {
1778                        return SCSI_MLQUEUE_HOST_BUSY;
1779                } else {
1780                        scmd->result = DID_NO_CONNECT << 16;
1781                        scmd->scsi_done(scmd);
1782                        return 0;
1783                }
1784        }
1785
1786        if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1787                scmd->result = DID_NO_CONNECT << 16;
1788                scmd->scsi_done(scmd);
1789                return 0;
1790        }
1791
1792        mr_device_priv_data = scmd->device->hostdata;
1793        if (!mr_device_priv_data) {
1794                scmd->result = DID_NO_CONNECT << 16;
1795                scmd->scsi_done(scmd);
1796                return 0;
1797        }
1798
1799        if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
1800                return SCSI_MLQUEUE_HOST_BUSY;
1801
1802        if (mr_device_priv_data->tm_busy)
1803                return SCSI_MLQUEUE_DEVICE_BUSY;
1804
1805
1806        scmd->result = 0;
1807
1808        if (MEGASAS_IS_LOGICAL(scmd->device) &&
1809            (scmd->device->id >= instance->fw_supported_vd_count ||
1810                scmd->device->lun)) {
1811                scmd->result = DID_BAD_TARGET << 16;
1812                goto out_done;
1813        }
1814
1815        if ((scmd->cmnd[0] == SYNCHRONIZE_CACHE) &&
1816            MEGASAS_IS_LOGICAL(scmd->device) &&
1817            (!instance->fw_sync_cache_support)) {
1818                scmd->result = DID_OK << 16;
1819                goto out_done;
1820        }
1821
1822        return instance->instancet->build_and_issue_cmd(instance, scmd);
1823
1824 out_done:
1825        scmd->scsi_done(scmd);
1826        return 0;
1827}
1828
1829static struct megasas_instance *megasas_lookup_instance(u16 host_no)
1830{
1831        int i;
1832
1833        for (i = 0; i < megasas_mgmt_info.max_index; i++) {
1834
1835                if ((megasas_mgmt_info.instance[i]) &&
1836                    (megasas_mgmt_info.instance[i]->host->host_no == host_no))
1837                        return megasas_mgmt_info.instance[i];
1838        }
1839
1840        return NULL;
1841}
1842
1843/*
1844* megasas_set_dynamic_target_properties -
1845* Device property set by driver may not be static and it is required to be
1846* updated after OCR
1847*
1848* set tm_capable.
1849* set dma alignment (only for eedp protection enable vd).
1850*
1851* @sdev: OS provided scsi device
1852*
1853* Returns void
1854*/
1855void megasas_set_dynamic_target_properties(struct scsi_device *sdev,
1856                                           bool is_target_prop)
1857{
1858        u16 pd_index = 0, ld;
1859        u32 device_id;
1860        struct megasas_instance *instance;
1861        struct fusion_context *fusion;
1862        struct MR_PRIV_DEVICE *mr_device_priv_data;
1863        struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
1864        struct MR_LD_RAID *raid;
1865        struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
1866
1867        instance = megasas_lookup_instance(sdev->host->host_no);
1868        fusion = instance->ctrl_context;
1869        mr_device_priv_data = sdev->hostdata;
1870
1871        if (!fusion || !mr_device_priv_data)
1872                return;
1873
1874        if (MEGASAS_IS_LOGICAL(sdev)) {
1875                device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL)
1876                                        + sdev->id;
1877                local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
1878                ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
1879                if (ld >= instance->fw_supported_vd_count)
1880                        return;
1881                raid = MR_LdRaidGet(ld, local_map_ptr);
1882
1883                if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER)
1884                blk_queue_update_dma_alignment(sdev->request_queue, 0x7);
1885
1886                mr_device_priv_data->is_tm_capable =
1887                        raid->capability.tmCapable;
1888
1889                if (!raid->flags.isEPD)
1890                        sdev->no_write_same = 1;
1891
1892        } else if (instance->use_seqnum_jbod_fp) {
1893                pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1894                        sdev->id;
1895                pd_sync = (void *)fusion->pd_seq_sync
1896                                [(instance->pd_seq_map_id - 1) & 1];
1897                mr_device_priv_data->is_tm_capable =
1898                        pd_sync->seq[pd_index].capability.tmCapable;
1899        }
1900
1901        if (is_target_prop && instance->tgt_prop->reset_tmo) {
1902                /*
1903                 * If FW provides a target reset timeout value, driver will use
1904                 * it. If not set, fallback to default values.
1905                 */
1906                mr_device_priv_data->target_reset_tmo =
1907                        min_t(u8, instance->max_reset_tmo,
1908                              instance->tgt_prop->reset_tmo);
1909                mr_device_priv_data->task_abort_tmo = instance->task_abort_tmo;
1910        } else {
1911                mr_device_priv_data->target_reset_tmo =
1912                                                MEGASAS_DEFAULT_TM_TIMEOUT;
1913                mr_device_priv_data->task_abort_tmo =
1914                                                MEGASAS_DEFAULT_TM_TIMEOUT;
1915        }
1916}
1917
1918/*
1919 * megasas_set_nvme_device_properties -
1920 * set nomerges=2
1921 * set virtual page boundary = 4K (current mr_nvme_pg_size is 4K).
1922 * set maximum io transfer = MDTS of NVME device provided by MR firmware.
1923 *
1924 * MR firmware provides value in KB. Caller of this function converts
1925 * kb into bytes.
1926 *
1927 * e.a MDTS=5 means 2^5 * nvme page size. (In case of 4K page size,
1928 * MR firmware provides value 128 as (32 * 4K) = 128K.
1929 *
1930 * @sdev:                               scsi device
1931 * @max_io_size:                                maximum io transfer size
1932 *
1933 */
1934static inline void
1935megasas_set_nvme_device_properties(struct scsi_device *sdev, u32 max_io_size)
1936{
1937        struct megasas_instance *instance;
1938        u32 mr_nvme_pg_size;
1939
1940        instance = (struct megasas_instance *)sdev->host->hostdata;
1941        mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
1942                                MR_DEFAULT_NVME_PAGE_SIZE);
1943
1944        blk_queue_max_hw_sectors(sdev->request_queue, (max_io_size / 512));
1945
1946        blk_queue_flag_set(QUEUE_FLAG_NOMERGES, sdev->request_queue);
1947        blk_queue_virt_boundary(sdev->request_queue, mr_nvme_pg_size - 1);
1948}
1949
1950/*
1951 * megasas_set_fw_assisted_qd -
1952 * set device queue depth to can_queue
1953 * set device queue depth to fw assisted qd
1954 *
1955 * @sdev:                               scsi device
1956 * @is_target_prop                      true, if fw provided target properties.
1957 */
1958static void megasas_set_fw_assisted_qd(struct scsi_device *sdev,
1959                                                 bool is_target_prop)
1960{
1961        u8 interface_type;
1962        u32 device_qd = MEGASAS_DEFAULT_CMD_PER_LUN;
1963        u32 tgt_device_qd;
1964        struct megasas_instance *instance;
1965        struct MR_PRIV_DEVICE *mr_device_priv_data;
1966
1967        instance = megasas_lookup_instance(sdev->host->host_no);
1968        mr_device_priv_data = sdev->hostdata;
1969        interface_type  = mr_device_priv_data->interface_type;
1970
1971        switch (interface_type) {
1972        case SAS_PD:
1973                device_qd = MEGASAS_SAS_QD;
1974                break;
1975        case SATA_PD:
1976                device_qd = MEGASAS_SATA_QD;
1977                break;
1978        case NVME_PD:
1979                device_qd = MEGASAS_NVME_QD;
1980                break;
1981        }
1982
1983        if (is_target_prop) {
1984                tgt_device_qd = le32_to_cpu(instance->tgt_prop->device_qdepth);
1985                if (tgt_device_qd &&
1986                    (tgt_device_qd <= instance->host->can_queue))
1987                        device_qd = tgt_device_qd;
1988        }
1989
1990        if (instance->enable_sdev_max_qd && interface_type != UNKNOWN_DRIVE)
1991                device_qd = instance->host->can_queue;
1992
1993        scsi_change_queue_depth(sdev, device_qd);
1994}
1995
1996/*
1997 * megasas_set_static_target_properties -
1998 * Device property set by driver are static and it is not required to be
1999 * updated after OCR.
2000 *
2001 * set io timeout
2002 * set device queue depth
2003 * set nvme device properties. see - megasas_set_nvme_device_properties
2004 *
2005 * @sdev:                               scsi device
2006 * @is_target_prop                      true, if fw provided target properties.
2007 */
2008static void megasas_set_static_target_properties(struct scsi_device *sdev,
2009                                                 bool is_target_prop)
2010{
2011        u32 max_io_size_kb = MR_DEFAULT_NVME_MDTS_KB;
2012        struct megasas_instance *instance;
2013
2014        instance = megasas_lookup_instance(sdev->host->host_no);
2015
2016        /*
2017         * The RAID firmware may require extended timeouts.
2018         */
2019        blk_queue_rq_timeout(sdev->request_queue, scmd_timeout * HZ);
2020
2021        /* max_io_size_kb will be set to non zero for
2022         * nvme based vd and syspd.
2023         */
2024        if (is_target_prop)
2025                max_io_size_kb = le32_to_cpu(instance->tgt_prop->max_io_size_kb);
2026
2027        if (instance->nvme_page_size && max_io_size_kb)
2028                megasas_set_nvme_device_properties(sdev, (max_io_size_kb << 10));
2029
2030        megasas_set_fw_assisted_qd(sdev, is_target_prop);
2031}
2032
2033
2034static int megasas_slave_configure(struct scsi_device *sdev)
2035{
2036        u16 pd_index = 0;
2037        struct megasas_instance *instance;
2038        int ret_target_prop = DCMD_FAILED;
2039        bool is_target_prop = false;
2040
2041        instance = megasas_lookup_instance(sdev->host->host_no);
2042        if (instance->pd_list_not_supported) {
2043                if (!MEGASAS_IS_LOGICAL(sdev) && sdev->type == TYPE_DISK) {
2044                        pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
2045                                sdev->id;
2046                        if (instance->pd_list[pd_index].driveState !=
2047                                MR_PD_STATE_SYSTEM)
2048                                return -ENXIO;
2049                }
2050        }
2051
2052        mutex_lock(&instance->reset_mutex);
2053        /* Send DCMD to Firmware and cache the information */
2054        if ((instance->pd_info) && !MEGASAS_IS_LOGICAL(sdev))
2055                megasas_get_pd_info(instance, sdev);
2056
2057        /* Some ventura firmware may not have instance->nvme_page_size set.
2058         * Do not send MR_DCMD_DRV_GET_TARGET_PROP
2059         */
2060        if ((instance->tgt_prop) && (instance->nvme_page_size))
2061                ret_target_prop = megasas_get_target_prop(instance, sdev);
2062
2063        is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
2064        megasas_set_static_target_properties(sdev, is_target_prop);
2065
2066        /* This sdev property may change post OCR */
2067        megasas_set_dynamic_target_properties(sdev, is_target_prop);
2068
2069        mutex_unlock(&instance->reset_mutex);
2070
2071        return 0;
2072}
2073
2074static int megasas_slave_alloc(struct scsi_device *sdev)
2075{
2076        u16 pd_index = 0;
2077        struct megasas_instance *instance ;
2078        struct MR_PRIV_DEVICE *mr_device_priv_data;
2079
2080        instance = megasas_lookup_instance(sdev->host->host_no);
2081        if (!MEGASAS_IS_LOGICAL(sdev)) {
2082                /*
2083                 * Open the OS scan to the SYSTEM PD
2084                 */
2085                pd_index =
2086                        (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
2087                        sdev->id;
2088                if ((instance->pd_list_not_supported ||
2089                        instance->pd_list[pd_index].driveState ==
2090                        MR_PD_STATE_SYSTEM)) {
2091                        goto scan_target;
2092                }
2093                return -ENXIO;
2094        }
2095
2096scan_target:
2097        mr_device_priv_data = kzalloc(sizeof(*mr_device_priv_data),
2098                                        GFP_KERNEL);
2099        if (!mr_device_priv_data)
2100                return -ENOMEM;
2101        sdev->hostdata = mr_device_priv_data;
2102
2103        atomic_set(&mr_device_priv_data->r1_ldio_hint,
2104                   instance->r1_ldio_hint_default);
2105        return 0;
2106}
2107
2108static void megasas_slave_destroy(struct scsi_device *sdev)
2109{
2110        kfree(sdev->hostdata);
2111        sdev->hostdata = NULL;
2112}
2113
2114/*
2115* megasas_complete_outstanding_ioctls - Complete outstanding ioctls after a
2116*                                       kill adapter
2117* @instance:                            Adapter soft state
2118*
2119*/
2120static void megasas_complete_outstanding_ioctls(struct megasas_instance *instance)
2121{
2122        int i;
2123        struct megasas_cmd *cmd_mfi;
2124        struct megasas_cmd_fusion *cmd_fusion;
2125        struct fusion_context *fusion = instance->ctrl_context;
2126
2127        /* Find all outstanding ioctls */
2128        if (fusion) {
2129                for (i = 0; i < instance->max_fw_cmds; i++) {
2130                        cmd_fusion = fusion->cmd_list[i];
2131                        if (cmd_fusion->sync_cmd_idx != (u32)ULONG_MAX) {
2132                                cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
2133                                if (cmd_mfi->sync_cmd &&
2134                                    (cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT)) {
2135                                        cmd_mfi->frame->hdr.cmd_status =
2136                                                        MFI_STAT_WRONG_STATE;
2137                                        megasas_complete_cmd(instance,
2138                                                             cmd_mfi, DID_OK);
2139                                }
2140                        }
2141                }
2142        } else {
2143                for (i = 0; i < instance->max_fw_cmds; i++) {
2144                        cmd_mfi = instance->cmd_list[i];
2145                        if (cmd_mfi->sync_cmd && cmd_mfi->frame->hdr.cmd !=
2146                                MFI_CMD_ABORT)
2147                                megasas_complete_cmd(instance, cmd_mfi, DID_OK);
2148                }
2149        }
2150}
2151
2152
2153void megaraid_sas_kill_hba(struct megasas_instance *instance)
2154{
2155        if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2156                dev_warn(&instance->pdev->dev,
2157                         "Adapter already dead, skipping kill HBA\n");
2158                return;
2159        }
2160
2161        /* Set critical error to block I/O & ioctls in case caller didn't */
2162        atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2163        /* Wait 1 second to ensure IO or ioctls in build have posted */
2164        msleep(1000);
2165        if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2166                (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2167                (instance->adapter_type != MFI_SERIES)) {
2168                if (!instance->requestorId) {
2169                        writel(MFI_STOP_ADP, &instance->reg_set->doorbell);
2170                        /* Flush */
2171                        readl(&instance->reg_set->doorbell);
2172                }
2173                if (instance->requestorId && instance->peerIsPresent)
2174                        memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
2175        } else {
2176                writel(MFI_STOP_ADP,
2177                        &instance->reg_set->inbound_doorbell);
2178        }
2179        /* Complete outstanding ioctls when adapter is killed */
2180        megasas_complete_outstanding_ioctls(instance);
2181}
2182
2183 /**
2184  * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
2185  *                                     restored to max value
2186  * @instance:                  Adapter soft state
2187  *
2188  */
2189void
2190megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
2191{
2192        unsigned long flags;
2193
2194        if (instance->flag & MEGASAS_FW_BUSY
2195            && time_after(jiffies, instance->last_time + 5 * HZ)
2196            && atomic_read(&instance->fw_outstanding) <
2197            instance->throttlequeuedepth + 1) {
2198
2199                spin_lock_irqsave(instance->host->host_lock, flags);
2200                instance->flag &= ~MEGASAS_FW_BUSY;
2201
2202                instance->host->can_queue = instance->cur_can_queue;
2203                spin_unlock_irqrestore(instance->host->host_lock, flags);
2204        }
2205}
2206
2207/**
2208 * megasas_complete_cmd_dpc      -      Returns FW's controller structure
2209 * @instance_addr:                      Address of adapter soft state
2210 *
2211 * Tasklet to complete cmds
2212 */
2213static void megasas_complete_cmd_dpc(unsigned long instance_addr)
2214{
2215        u32 producer;
2216        u32 consumer;
2217        u32 context;
2218        struct megasas_cmd *cmd;
2219        struct megasas_instance *instance =
2220                                (struct megasas_instance *)instance_addr;
2221        unsigned long flags;
2222
2223        /* If we have already declared adapter dead, donot complete cmds */
2224        if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
2225                return;
2226
2227        spin_lock_irqsave(&instance->completion_lock, flags);
2228
2229        producer = le32_to_cpu(*instance->producer);
2230        consumer = le32_to_cpu(*instance->consumer);
2231
2232        while (consumer != producer) {
2233                context = le32_to_cpu(instance->reply_queue[consumer]);
2234                if (context >= instance->max_fw_cmds) {
2235                        dev_err(&instance->pdev->dev, "Unexpected context value %x\n",
2236                                context);
2237                        BUG();
2238                }
2239
2240                cmd = instance->cmd_list[context];
2241
2242                megasas_complete_cmd(instance, cmd, DID_OK);
2243
2244                consumer++;
2245                if (consumer == (instance->max_fw_cmds + 1)) {
2246                        consumer = 0;
2247                }
2248        }
2249
2250        *instance->consumer = cpu_to_le32(producer);
2251
2252        spin_unlock_irqrestore(&instance->completion_lock, flags);
2253
2254        /*
2255         * Check if we can restore can_queue
2256         */
2257        megasas_check_and_restore_queue_depth(instance);
2258}
2259
2260static void megasas_sriov_heartbeat_handler(struct timer_list *t);
2261
2262/**
2263 * megasas_start_timer - Initializes sriov heartbeat timer object
2264 * @instance:           Adapter soft state
2265 *
2266 */
2267void megasas_start_timer(struct megasas_instance *instance)
2268{
2269        struct timer_list *timer = &instance->sriov_heartbeat_timer;
2270
2271        timer_setup(timer, megasas_sriov_heartbeat_handler, 0);
2272        timer->expires = jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF;
2273        add_timer(timer);
2274}
2275
2276static void
2277megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
2278
2279static void
2280process_fw_state_change_wq(struct work_struct *work);
2281
2282static void megasas_do_ocr(struct megasas_instance *instance)
2283{
2284        if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
2285        (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
2286        (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
2287                *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
2288        }
2289        instance->instancet->disable_intr(instance);
2290        atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
2291        instance->issuepend_done = 0;
2292
2293        atomic_set(&instance->fw_outstanding, 0);
2294        megasas_internal_reset_defer_cmds(instance);
2295        process_fw_state_change_wq(&instance->work_init);
2296}
2297
2298static int megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance,
2299                                            int initial)
2300{
2301        struct megasas_cmd *cmd;
2302        struct megasas_dcmd_frame *dcmd;
2303        struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL;
2304        dma_addr_t new_affiliation_111_h;
2305        int ld, retval = 0;
2306        u8 thisVf;
2307
2308        cmd = megasas_get_cmd(instance);
2309
2310        if (!cmd) {
2311                dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation_111:"
2312                       "Failed to get cmd for scsi%d\n",
2313                        instance->host->host_no);
2314                return -ENOMEM;
2315        }
2316
2317        dcmd = &cmd->frame->dcmd;
2318
2319        if (!instance->vf_affiliation_111) {
2320                dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2321                       "affiliation for scsi%d\n", instance->host->host_no);
2322                megasas_return_cmd(instance, cmd);
2323                return -ENOMEM;
2324        }
2325
2326        if (initial)
2327                        memset(instance->vf_affiliation_111, 0,
2328                               sizeof(struct MR_LD_VF_AFFILIATION_111));
2329        else {
2330                new_affiliation_111 =
2331                        dma_alloc_coherent(&instance->pdev->dev,
2332                                           sizeof(struct MR_LD_VF_AFFILIATION_111),
2333                                           &new_affiliation_111_h, GFP_KERNEL);
2334                if (!new_affiliation_111) {
2335                        dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2336                               "memory for new affiliation for scsi%d\n",
2337                               instance->host->host_no);
2338                        megasas_return_cmd(instance, cmd);
2339                        return -ENOMEM;
2340                }
2341        }
2342
2343        memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2344
2345        dcmd->cmd = MFI_CMD_DCMD;
2346        dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2347        dcmd->sge_count = 1;
2348        dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2349        dcmd->timeout = 0;
2350        dcmd->pad_0 = 0;
2351        dcmd->data_xfer_len =
2352                cpu_to_le32(sizeof(struct MR_LD_VF_AFFILIATION_111));
2353        dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111);
2354
2355        if (initial)
2356                dcmd->sgl.sge32[0].phys_addr =
2357                        cpu_to_le32(instance->vf_affiliation_111_h);
2358        else
2359                dcmd->sgl.sge32[0].phys_addr =
2360                        cpu_to_le32(new_affiliation_111_h);
2361
2362        dcmd->sgl.sge32[0].length = cpu_to_le32(
2363                sizeof(struct MR_LD_VF_AFFILIATION_111));
2364
2365        dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2366               "scsi%d\n", instance->host->host_no);
2367
2368        if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2369                dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2370                       " failed with status 0x%x for scsi%d\n",
2371                       dcmd->cmd_status, instance->host->host_no);
2372                retval = 1; /* Do a scan if we couldn't get affiliation */
2373                goto out;
2374        }
2375
2376        if (!initial) {
2377                thisVf = new_affiliation_111->thisVf;
2378                for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++)
2379                        if (instance->vf_affiliation_111->map[ld].policy[thisVf] !=
2380                            new_affiliation_111->map[ld].policy[thisVf]) {
2381                                dev_warn(&instance->pdev->dev, "SR-IOV: "
2382                                       "Got new LD/VF affiliation for scsi%d\n",
2383                                       instance->host->host_no);
2384                                memcpy(instance->vf_affiliation_111,
2385                                       new_affiliation_111,
2386                                       sizeof(struct MR_LD_VF_AFFILIATION_111));
2387                                retval = 1;
2388                                goto out;
2389                        }
2390        }
2391out:
2392        if (new_affiliation_111) {
2393                dma_free_coherent(&instance->pdev->dev,
2394                                    sizeof(struct MR_LD_VF_AFFILIATION_111),
2395                                    new_affiliation_111,
2396                                    new_affiliation_111_h);
2397        }
2398
2399        megasas_return_cmd(instance, cmd);
2400
2401        return retval;
2402}
2403
2404static int megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance,
2405                                            int initial)
2406{
2407        struct megasas_cmd *cmd;
2408        struct megasas_dcmd_frame *dcmd;
2409        struct MR_LD_VF_AFFILIATION *new_affiliation = NULL;
2410        struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL;
2411        dma_addr_t new_affiliation_h;
2412        int i, j, retval = 0, found = 0, doscan = 0;
2413        u8 thisVf;
2414
2415        cmd = megasas_get_cmd(instance);
2416
2417        if (!cmd) {
2418                dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation12: "
2419                       "Failed to get cmd for scsi%d\n",
2420                       instance->host->host_no);
2421                return -ENOMEM;
2422        }
2423
2424        dcmd = &cmd->frame->dcmd;
2425
2426        if (!instance->vf_affiliation) {
2427                dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2428                       "affiliation for scsi%d\n", instance->host->host_no);
2429                megasas_return_cmd(instance, cmd);
2430                return -ENOMEM;
2431        }
2432
2433        if (initial)
2434                memset(instance->vf_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
2435                       sizeof(struct MR_LD_VF_AFFILIATION));
2436        else {
2437                new_affiliation =
2438                        dma_alloc_coherent(&instance->pdev->dev,
2439                                           (MAX_LOGICAL_DRIVES + 1) * sizeof(struct MR_LD_VF_AFFILIATION),
2440                                           &new_affiliation_h, GFP_KERNEL);
2441                if (!new_affiliation) {
2442                        dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2443                               "memory for new affiliation for scsi%d\n",
2444                               instance->host->host_no);
2445                        megasas_return_cmd(instance, cmd);
2446                        return -ENOMEM;
2447                }
2448        }
2449
2450        memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2451
2452        dcmd->cmd = MFI_CMD_DCMD;
2453        dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2454        dcmd->sge_count = 1;
2455        dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2456        dcmd->timeout = 0;
2457        dcmd->pad_0 = 0;
2458        dcmd->data_xfer_len = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2459                sizeof(struct MR_LD_VF_AFFILIATION));
2460        dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS);
2461
2462        if (initial)
2463                dcmd->sgl.sge32[0].phys_addr =
2464                        cpu_to_le32(instance->vf_affiliation_h);
2465        else
2466                dcmd->sgl.sge32[0].phys_addr =
2467                        cpu_to_le32(new_affiliation_h);
2468
2469        dcmd->sgl.sge32[0].length = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2470                sizeof(struct MR_LD_VF_AFFILIATION));
2471
2472        dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2473               "scsi%d\n", instance->host->host_no);
2474
2475
2476        if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2477                dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2478                       " failed with status 0x%x for scsi%d\n",
2479                       dcmd->cmd_status, instance->host->host_no);
2480                retval = 1; /* Do a scan if we couldn't get affiliation */
2481                goto out;
2482        }
2483
2484        if (!initial) {
2485                if (!new_affiliation->ldCount) {
2486                        dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2487                               "affiliation for passive path for scsi%d\n",
2488                               instance->host->host_no);
2489                        retval = 1;
2490                        goto out;
2491                }
2492                newmap = new_affiliation->map;
2493                savedmap = instance->vf_affiliation->map;
2494                thisVf = new_affiliation->thisVf;
2495                for (i = 0 ; i < new_affiliation->ldCount; i++) {
2496                        found = 0;
2497                        for (j = 0; j < instance->vf_affiliation->ldCount;
2498                             j++) {
2499                                if (newmap->ref.targetId ==
2500                                    savedmap->ref.targetId) {
2501                                        found = 1;
2502                                        if (newmap->policy[thisVf] !=
2503                                            savedmap->policy[thisVf]) {
2504                                                doscan = 1;
2505                                                goto out;
2506                                        }
2507                                }
2508                                savedmap = (struct MR_LD_VF_MAP *)
2509                                        ((unsigned char *)savedmap +
2510                                         savedmap->size);
2511                        }
2512                        if (!found && newmap->policy[thisVf] !=
2513                            MR_LD_ACCESS_HIDDEN) {
2514                                doscan = 1;
2515                                goto out;
2516                        }
2517                        newmap = (struct MR_LD_VF_MAP *)
2518                                ((unsigned char *)newmap + newmap->size);
2519                }
2520
2521                newmap = new_affiliation->map;
2522                savedmap = instance->vf_affiliation->map;
2523
2524                for (i = 0 ; i < instance->vf_affiliation->ldCount; i++) {
2525                        found = 0;
2526                        for (j = 0 ; j < new_affiliation->ldCount; j++) {
2527                                if (savedmap->ref.targetId ==
2528                                    newmap->ref.targetId) {
2529                                        found = 1;
2530                                        if (savedmap->policy[thisVf] !=
2531                                            newmap->policy[thisVf]) {
2532                                                doscan = 1;
2533                                                goto out;
2534                                        }
2535                                }
2536                                newmap = (struct MR_LD_VF_MAP *)
2537                                        ((unsigned char *)newmap +
2538                                         newmap->size);
2539                        }
2540                        if (!found && savedmap->policy[thisVf] !=
2541                            MR_LD_ACCESS_HIDDEN) {
2542                                doscan = 1;
2543                                goto out;
2544                        }
2545                        savedmap = (struct MR_LD_VF_MAP *)
2546                                ((unsigned char *)savedmap +
2547                                 savedmap->size);
2548                }
2549        }
2550out:
2551        if (doscan) {
2552                dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2553                       "affiliation for scsi%d\n", instance->host->host_no);
2554                memcpy(instance->vf_affiliation, new_affiliation,
2555                       new_affiliation->size);
2556                retval = 1;
2557        }
2558
2559        if (new_affiliation)
2560                dma_free_coherent(&instance->pdev->dev,
2561                                    (MAX_LOGICAL_DRIVES + 1) *
2562                                    sizeof(struct MR_LD_VF_AFFILIATION),
2563                                    new_affiliation, new_affiliation_h);
2564        megasas_return_cmd(instance, cmd);
2565
2566        return retval;
2567}
2568
2569/* This function will get the current SR-IOV LD/VF affiliation */
2570static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
2571        int initial)
2572{
2573        int retval;
2574
2575        if (instance->PlasmaFW111)
2576                retval = megasas_get_ld_vf_affiliation_111(instance, initial);
2577        else
2578                retval = megasas_get_ld_vf_affiliation_12(instance, initial);
2579        return retval;
2580}
2581
2582/* This function will tell FW to start the SR-IOV heartbeat */
2583int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
2584                                         int initial)
2585{
2586        struct megasas_cmd *cmd;
2587        struct megasas_dcmd_frame *dcmd;
2588        int retval = 0;
2589
2590        cmd = megasas_get_cmd(instance);
2591
2592        if (!cmd) {
2593                dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_sriov_start_heartbeat: "
2594                       "Failed to get cmd for scsi%d\n",
2595                       instance->host->host_no);
2596                return -ENOMEM;
2597        }
2598
2599        dcmd = &cmd->frame->dcmd;
2600
2601        if (initial) {
2602                instance->hb_host_mem =
2603                        dma_alloc_coherent(&instance->pdev->dev,
2604                                           sizeof(struct MR_CTRL_HB_HOST_MEM),
2605                                           &instance->hb_host_mem_h,
2606                                           GFP_KERNEL);
2607                if (!instance->hb_host_mem) {
2608                        dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate"
2609                               " memory for heartbeat host memory for scsi%d\n",
2610                               instance->host->host_no);
2611                        retval = -ENOMEM;
2612                        goto out;
2613                }
2614        }
2615
2616        memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2617
2618        dcmd->mbox.s[0] = cpu_to_le16(sizeof(struct MR_CTRL_HB_HOST_MEM));
2619        dcmd->cmd = MFI_CMD_DCMD;
2620        dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2621        dcmd->sge_count = 1;
2622        dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2623        dcmd->timeout = 0;
2624        dcmd->pad_0 = 0;
2625        dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM));
2626        dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC);
2627
2628        megasas_set_dma_settings(instance, dcmd, instance->hb_host_mem_h,
2629                                 sizeof(struct MR_CTRL_HB_HOST_MEM));
2630
2631        dev_warn(&instance->pdev->dev, "SR-IOV: Starting heartbeat for scsi%d\n",
2632               instance->host->host_no);
2633
2634        if ((instance->adapter_type != MFI_SERIES) &&
2635            !instance->mask_interrupts)
2636                retval = megasas_issue_blocked_cmd(instance, cmd,
2637                        MEGASAS_ROUTINE_WAIT_TIME_VF);
2638        else
2639                retval = megasas_issue_polled(instance, cmd);
2640
2641        if (retval) {
2642                dev_warn(&instance->pdev->dev, "SR-IOV: MR_DCMD_CTRL_SHARED_HOST"
2643                        "_MEM_ALLOC DCMD %s for scsi%d\n",
2644                        (dcmd->cmd_status == MFI_STAT_INVALID_STATUS) ?
2645                        "timed out" : "failed", instance->host->host_no);
2646                retval = 1;
2647        }
2648
2649out:
2650        megasas_return_cmd(instance, cmd);
2651
2652        return retval;
2653}
2654
2655/* Handler for SR-IOV heartbeat */
2656static void megasas_sriov_heartbeat_handler(struct timer_list *t)
2657{
2658        struct megasas_instance *instance =
2659                from_timer(instance, t, sriov_heartbeat_timer);
2660
2661        if (instance->hb_host_mem->HB.fwCounter !=
2662            instance->hb_host_mem->HB.driverCounter) {
2663                instance->hb_host_mem->HB.driverCounter =
2664                        instance->hb_host_mem->HB.fwCounter;
2665                mod_timer(&instance->sriov_heartbeat_timer,
2666                          jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
2667        } else {
2668                dev_warn(&instance->pdev->dev, "SR-IOV: Heartbeat never "
2669                       "completed for scsi%d\n", instance->host->host_no);
2670                schedule_work(&instance->work_init);
2671        }
2672}
2673
2674/**
2675 * megasas_wait_for_outstanding -       Wait for all outstanding cmds
2676 * @instance:                           Adapter soft state
2677 *
2678 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to
2679 * complete all its outstanding commands. Returns error if one or more IOs
2680 * are pending after this time period. It also marks the controller dead.
2681 */
2682static int megasas_wait_for_outstanding(struct megasas_instance *instance)
2683{
2684        int i, sl, outstanding;
2685        u32 reset_index;
2686        u32 wait_time = MEGASAS_RESET_WAIT_TIME;
2687        unsigned long flags;
2688        struct list_head clist_local;
2689        struct megasas_cmd *reset_cmd;
2690        u32 fw_state;
2691
2692        if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2693                dev_info(&instance->pdev->dev, "%s:%d HBA is killed.\n",
2694                __func__, __LINE__);
2695                return FAILED;
2696        }
2697
2698        if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2699
2700                INIT_LIST_HEAD(&clist_local);
2701                spin_lock_irqsave(&instance->hba_lock, flags);
2702                list_splice_init(&instance->internal_reset_pending_q,
2703                                &clist_local);
2704                spin_unlock_irqrestore(&instance->hba_lock, flags);
2705
2706                dev_notice(&instance->pdev->dev, "HBA reset wait ...\n");
2707                for (i = 0; i < wait_time; i++) {
2708                        msleep(1000);
2709                        if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL)
2710                                break;
2711                }
2712
2713                if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2714                        dev_notice(&instance->pdev->dev, "reset: Stopping HBA.\n");
2715                        atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2716                        return FAILED;
2717                }
2718
2719                reset_index = 0;
2720                while (!list_empty(&clist_local)) {
2721                        reset_cmd = list_entry((&clist_local)->next,
2722                                                struct megasas_cmd, list);
2723                        list_del_init(&reset_cmd->list);
2724                        if (reset_cmd->scmd) {
2725                                reset_cmd->scmd->result = DID_REQUEUE << 16;
2726                                dev_notice(&instance->pdev->dev, "%d:%p reset [%02x]\n",
2727                                        reset_index, reset_cmd,
2728                                        reset_cmd->scmd->cmnd[0]);
2729
2730                                reset_cmd->scmd->scsi_done(reset_cmd->scmd);
2731                                megasas_return_cmd(instance, reset_cmd);
2732                        } else if (reset_cmd->sync_cmd) {
2733                                dev_notice(&instance->pdev->dev, "%p synch cmds"
2734                                                "reset queue\n",
2735                                                reset_cmd);
2736
2737                                reset_cmd->cmd_status_drv = DCMD_INIT;
2738                                instance->instancet->fire_cmd(instance,
2739                                                reset_cmd->frame_phys_addr,
2740                                                0, instance->reg_set);
2741                        } else {
2742                                dev_notice(&instance->pdev->dev, "%p unexpected"
2743                                        "cmds lst\n",
2744                                        reset_cmd);
2745                        }
2746                        reset_index++;
2747                }
2748
2749                return SUCCESS;
2750        }
2751
2752        for (i = 0; i < resetwaittime; i++) {
2753                outstanding = atomic_read(&instance->fw_outstanding);
2754
2755                if (!outstanding)
2756                        break;
2757
2758                if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2759                        dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
2760                               "commands to complete\n",i,outstanding);
2761                        /*
2762                         * Call cmd completion routine. Cmd to be
2763                         * be completed directly without depending on isr.
2764                         */
2765                        megasas_complete_cmd_dpc((unsigned long)instance);
2766                }
2767
2768                msleep(1000);
2769        }
2770
2771        i = 0;
2772        outstanding = atomic_read(&instance->fw_outstanding);
2773        fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK;
2774
2775        if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2776                goto no_outstanding;
2777
2778        if (instance->disableOnlineCtrlReset)
2779                goto kill_hba_and_failed;
2780        do {
2781                if ((fw_state == MFI_STATE_FAULT) || atomic_read(&instance->fw_outstanding)) {
2782                        dev_info(&instance->pdev->dev,
2783                                "%s:%d waiting_for_outstanding: before issue OCR. FW state = 0x%x, outstanding 0x%x\n",
2784                                __func__, __LINE__, fw_state, atomic_read(&instance->fw_outstanding));
2785                        if (i == 3)
2786                                goto kill_hba_and_failed;
2787                        megasas_do_ocr(instance);
2788
2789                        if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2790                                dev_info(&instance->pdev->dev, "%s:%d OCR failed and HBA is killed.\n",
2791                                __func__, __LINE__);
2792                                return FAILED;
2793                        }
2794                        dev_info(&instance->pdev->dev, "%s:%d waiting_for_outstanding: after issue OCR.\n",
2795                                __func__, __LINE__);
2796
2797                        for (sl = 0; sl < 10; sl++)
2798                                msleep(500);
2799
2800                        outstanding = atomic_read(&instance->fw_outstanding);
2801
2802                        fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK;
2803                        if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2804                                goto no_outstanding;
2805                }
2806                i++;
2807        } while (i <= 3);
2808
2809no_outstanding:
2810
2811        dev_info(&instance->pdev->dev, "%s:%d no more pending commands remain after reset handling.\n",
2812                __func__, __LINE__);
2813        return SUCCESS;
2814
2815kill_hba_and_failed:
2816
2817        /* Reset not supported, kill adapter */
2818        dev_info(&instance->pdev->dev, "%s:%d killing adapter scsi%d"
2819                " disableOnlineCtrlReset %d fw_outstanding %d \n",
2820                __func__, __LINE__, instance->host->host_no, instance->disableOnlineCtrlReset,
2821                atomic_read(&instance->fw_outstanding));
2822        megasas_dump_pending_frames(instance);
2823        megaraid_sas_kill_hba(instance);
2824
2825        return FAILED;
2826}
2827
2828/**
2829 * megasas_generic_reset -      Generic reset routine
2830 * @scmd:                       Mid-layer SCSI command
2831 *
2832 * This routine implements a generic reset handler for device, bus and host
2833 * reset requests. Device, bus and host specific reset handlers can use this
2834 * function after they do their specific tasks.
2835 */
2836static int megasas_generic_reset(struct scsi_cmnd *scmd)
2837{
2838        int ret_val;
2839        struct megasas_instance *instance;
2840
2841        instance = (struct megasas_instance *)scmd->device->host->hostdata;
2842
2843        scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n",
2844                 scmd->cmnd[0], scmd->retries);
2845
2846        if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2847                dev_err(&instance->pdev->dev, "cannot recover from previous reset failures\n");
2848                return FAILED;
2849        }
2850
2851        ret_val = megasas_wait_for_outstanding(instance);
2852        if (ret_val == SUCCESS)
2853                dev_notice(&instance->pdev->dev, "reset successful\n");
2854        else
2855                dev_err(&instance->pdev->dev, "failed to do reset\n");
2856
2857        return ret_val;
2858}
2859
2860/**
2861 * megasas_reset_timer - quiesce the adapter if required
2862 * @scmd:               scsi cmnd
2863 *
2864 * Sets the FW busy flag and reduces the host->can_queue if the
2865 * cmd has not been completed within the timeout period.
2866 */
2867static enum
2868blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
2869{
2870        struct megasas_instance *instance;
2871        unsigned long flags;
2872
2873        if (time_after(jiffies, scmd->jiffies_at_alloc +
2874                                (scmd_timeout * 2) * HZ)) {
2875                return BLK_EH_DONE;
2876        }
2877
2878        instance = (struct megasas_instance *)scmd->device->host->hostdata;
2879        if (!(instance->flag & MEGASAS_FW_BUSY)) {
2880                /* FW is busy, throttle IO */
2881                spin_lock_irqsave(instance->host->host_lock, flags);
2882
2883                instance->host->can_queue = instance->throttlequeuedepth;
2884                instance->last_time = jiffies;
2885                instance->flag |= MEGASAS_FW_BUSY;
2886
2887                spin_unlock_irqrestore(instance->host->host_lock, flags);
2888        }
2889        return BLK_EH_RESET_TIMER;
2890}
2891
2892/**
2893 * megasas_dump -       This function will print hexdump of provided buffer.
2894 * @buf:                Buffer to be dumped
2895 * @sz:         Size in bytes
2896 * @format:             Different formats of dumping e.g. format=n will
2897 *                      cause only 'n' 32 bit words to be dumped in a single
2898 *                      line.
2899 */
2900inline void
2901megasas_dump(void *buf, int sz, int format)
2902{
2903        int i;
2904        __le32 *buf_loc = (__le32 *)buf;
2905
2906        for (i = 0; i < (sz / sizeof(__le32)); i++) {
2907                if ((i % format) == 0) {
2908                        if (i != 0)
2909                                printk(KERN_CONT "\n");
2910                        printk(KERN_CONT "%08x: ", (i * 4));
2911                }
2912                printk(KERN_CONT "%08x ", le32_to_cpu(buf_loc[i]));
2913        }
2914        printk(KERN_CONT "\n");
2915}
2916
2917/**
2918 * megasas_dump_reg_set -       This function will print hexdump of register set
2919 * @buf:                        Buffer to be dumped
2920 * @sz:                         Size in bytes
2921 * @format:                     Different formats of dumping e.g. format=n will
2922 *                              cause only 'n' 32 bit words to be dumped in a
2923 *                              single line.
2924 */
2925inline void
2926megasas_dump_reg_set(void __iomem *reg_set)
2927{
2928        unsigned int i, sz = 256;
2929        u32 __iomem *reg = (u32 __iomem *)reg_set;
2930
2931        for (i = 0; i < (sz / sizeof(u32)); i++)
2932                printk("%08x: %08x\n", (i * 4), readl(&reg[i]));
2933}
2934
2935/**
2936 * megasas_dump_fusion_io -     This function will print key details
2937 *                              of SCSI IO
2938 * @scmd:                       SCSI command pointer of SCSI IO
2939 */
2940void
2941megasas_dump_fusion_io(struct scsi_cmnd *scmd)
2942{
2943        struct megasas_cmd_fusion *cmd;
2944        union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
2945        struct megasas_instance *instance;
2946
2947        cmd = (struct megasas_cmd_fusion *)scmd->SCp.ptr;
2948        instance = (struct megasas_instance *)scmd->device->host->hostdata;
2949
2950        scmd_printk(KERN_INFO, scmd,
2951                    "scmd: (0x%p)  retries: 0x%x  allowed: 0x%x\n",
2952                    scmd, scmd->retries, scmd->allowed);
2953        scsi_print_command(scmd);
2954
2955        if (cmd) {
2956                req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc;
2957                scmd_printk(KERN_INFO, scmd, "Request descriptor details:\n");
2958                scmd_printk(KERN_INFO, scmd,
2959                            "RequestFlags:0x%x  MSIxIndex:0x%x  SMID:0x%x  LMID:0x%x  DevHandle:0x%x\n",
2960                            req_desc->SCSIIO.RequestFlags,
2961                            req_desc->SCSIIO.MSIxIndex, req_desc->SCSIIO.SMID,
2962                            req_desc->SCSIIO.LMID, req_desc->SCSIIO.DevHandle);
2963
2964                printk(KERN_INFO "IO request frame:\n");
2965                megasas_dump(cmd->io_request,
2966                             MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE, 8);
2967                printk(KERN_INFO "Chain frame:\n");
2968                megasas_dump(cmd->sg_frame,
2969                             instance->max_chain_frame_sz, 8);
2970        }
2971
2972}
2973
2974/*
2975 * megasas_dump_sys_regs - This function will dump system registers through
2976 *                          sysfs.
2977 * @reg_set:                Pointer to System register set.
2978 * @buf:                    Buffer to which output is to be written.
2979 * @return:                 Number of bytes written to buffer.
2980 */
2981static inline ssize_t
2982megasas_dump_sys_regs(void __iomem *reg_set, char *buf)
2983{
2984        unsigned int i, sz = 256;
2985        int bytes_wrote = 0;
2986        char *loc = (char *)buf;
2987        u32 __iomem *reg = (u32 __iomem *)reg_set;
2988
2989        for (i = 0; i < sz / sizeof(u32); i++) {
2990                bytes_wrote += scnprintf(loc + bytes_wrote,
2991                                         PAGE_SIZE - bytes_wrote,
2992                                         "%08x: %08x\n", (i * 4),
2993                                         readl(&reg[i]));
2994        }
2995        return bytes_wrote;
2996}
2997
2998/**
2999 * megasas_reset_bus_host -     Bus & host reset handler entry point
3000 */
3001static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
3002{
3003        int ret;
3004        struct megasas_instance *instance;
3005
3006        instance = (struct megasas_instance *)scmd->device->host->hostdata;
3007
3008        scmd_printk(KERN_INFO, scmd,
3009                "OCR is requested due to IO timeout!!\n");
3010
3011        scmd_printk(KERN_INFO, scmd,
3012                "SCSI host state: %d  SCSI host busy: %d  FW outstanding: %d\n",
3013                scmd->device->host->shost_state,
3014                scsi_host_busy(scmd->device->host),
3015                atomic_read(&instance->fw_outstanding));
3016        /*
3017         * First wait for all commands to complete
3018         */
3019        if (instance->adapter_type == MFI_SERIES) {
3020                ret = megasas_generic_reset(scmd);
3021        } else {
3022                megasas_dump_fusion_io(scmd);
3023                ret = megasas_reset_fusion(scmd->device->host,
3024                                SCSIIO_TIMEOUT_OCR);
3025        }
3026
3027        return ret;
3028}
3029
3030/**
3031 * megasas_task_abort - Issues task abort request to firmware
3032 *                      (supported only for fusion adapters)
3033 * @scmd:               SCSI command pointer
3034 */
3035static int megasas_task_abort(struct scsi_cmnd *scmd)
3036{
3037        int ret;
3038        struct megasas_instance *instance;
3039
3040        instance = (struct megasas_instance *)scmd->device->host->hostdata;
3041
3042        if (instance->adapter_type != MFI_SERIES)
3043                ret = megasas_task_abort_fusion(scmd);
3044        else {
3045                sdev_printk(KERN_NOTICE, scmd->device, "TASK ABORT not supported\n");
3046                ret = FAILED;
3047        }
3048
3049        return ret;
3050}
3051
3052/**
3053 * megasas_reset_target:  Issues target reset request to firmware
3054 *                        (supported only for fusion adapters)
3055 * @scmd:                 SCSI command pointer
3056 */
3057static int megasas_reset_target(struct scsi_cmnd *scmd)
3058{
3059        int ret;
3060        struct megasas_instance *instance;
3061
3062        instance = (struct megasas_instance *)scmd->device->host->hostdata;
3063
3064        if (instance->adapter_type != MFI_SERIES)
3065                ret = megasas_reset_target_fusion(scmd);
3066        else {
3067                sdev_printk(KERN_NOTICE, scmd->device, "TARGET RESET not supported\n");
3068                ret = FAILED;
3069        }
3070
3071        return ret;
3072}
3073
3074/**
3075 * megasas_bios_param - Returns disk geometry for a disk
3076 * @sdev:               device handle
3077 * @bdev:               block device
3078 * @capacity:           drive capacity
3079 * @geom:               geometry parameters
3080 */
3081static int
3082megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
3083                 sector_t capacity, int geom[])
3084{
3085        int heads;
3086        int sectors;
3087        sector_t cylinders;
3088        unsigned long tmp;
3089
3090        /* Default heads (64) & sectors (32) */
3091        heads = 64;
3092        sectors = 32;
3093
3094        tmp = heads * sectors;
3095        cylinders = capacity;
3096
3097        sector_div(cylinders, tmp);
3098
3099        /*
3100         * Handle extended translation size for logical drives > 1Gb
3101         */
3102
3103        if (capacity >= 0x200000) {
3104                heads = 255;
3105                sectors = 63;
3106                tmp = heads*sectors;
3107                cylinders = capacity;
3108                sector_div(cylinders, tmp);
3109        }
3110
3111        geom[0] = heads;
3112        geom[1] = sectors;
3113        geom[2] = cylinders;
3114
3115        return 0;
3116}
3117
3118static void megasas_aen_polling(struct work_struct *work);
3119
3120/**
3121 * megasas_service_aen -        Processes an event notification
3122 * @instance:                   Adapter soft state
3123 * @cmd:                        AEN command completed by the ISR
3124 *
3125 * For AEN, driver sends a command down to FW that is held by the FW till an
3126 * event occurs. When an event of interest occurs, FW completes the command
3127 * that it was previously holding.
3128 *
3129 * This routines sends SIGIO signal to processes that have registered with the
3130 * driver for AEN.
3131 */
3132static void
3133megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
3134{
3135        unsigned long flags;
3136
3137        /*
3138         * Don't signal app if it is just an aborted previously registered aen
3139         */
3140        if ((!cmd->abort_aen) && (instance->unload == 0)) {
3141                spin_lock_irqsave(&poll_aen_lock, flags);
3142                megasas_poll_wait_aen = 1;
3143                spin_unlock_irqrestore(&poll_aen_lock, flags);
3144                wake_up(&megasas_poll_wait);
3145                kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
3146        }
3147        else
3148                cmd->abort_aen = 0;
3149
3150        instance->aen_cmd = NULL;
3151
3152        megasas_return_cmd(instance, cmd);
3153
3154        if ((instance->unload == 0) &&
3155                ((instance->issuepend_done == 1))) {
3156                struct megasas_aen_event *ev;
3157
3158                ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
3159                if (!ev) {
3160                        dev_err(&instance->pdev->dev, "megasas_service_aen: out of memory\n");
3161                } else {
3162                        ev->instance = instance;
3163                        instance->ev = ev;
3164                        INIT_DELAYED_WORK(&ev->hotplug_work,
3165                                          megasas_aen_polling);
3166                        schedule_delayed_work(&ev->hotplug_work, 0);
3167                }
3168        }
3169}
3170
3171static ssize_t
3172fw_crash_buffer_store(struct device *cdev,
3173        struct device_attribute *attr, const char *buf, size_t count)
3174{
3175        struct Scsi_Host *shost = class_to_shost(cdev);
3176        struct megasas_instance *instance =
3177                (struct megasas_instance *) shost->hostdata;
3178        int val = 0;
3179        unsigned long flags;
3180
3181        if (kstrtoint(buf, 0, &val) != 0)
3182                return -EINVAL;
3183
3184        spin_lock_irqsave(&instance->crashdump_lock, flags);
3185        instance->fw_crash_buffer_offset = val;
3186        spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3187        return strlen(buf);
3188}
3189
3190static ssize_t
3191fw_crash_buffer_show(struct device *cdev,
3192        struct device_attribute *attr, char *buf)
3193{
3194        struct Scsi_Host *shost = class_to_shost(cdev);
3195        struct megasas_instance *instance =
3196                (struct megasas_instance *) shost->hostdata;
3197        u32 size;
3198        unsigned long dmachunk = CRASH_DMA_BUF_SIZE;
3199        unsigned long chunk_left_bytes;
3200        unsigned long src_addr;
3201        unsigned long flags;
3202        u32 buff_offset;
3203
3204        spin_lock_irqsave(&instance->crashdump_lock, flags);
3205        buff_offset = instance->fw_crash_buffer_offset;
3206        if (!instance->crash_dump_buf &&
3207                !((instance->fw_crash_state == AVAILABLE) ||
3208                (instance->fw_crash_state == COPYING))) {
3209                dev_err(&instance->pdev->dev,
3210                        "Firmware crash dump is not available\n");
3211                spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3212                return -EINVAL;
3213        }
3214
3215        if (buff_offset > (instance->fw_crash_buffer_size * dmachunk)) {
3216                dev_err(&instance->pdev->dev,
3217                        "Firmware crash dump offset is out of range\n");
3218                spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3219                return 0;
3220        }
3221
3222        size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset;
3223        chunk_left_bytes = dmachunk - (buff_offset % dmachunk);
3224        size = (size > chunk_left_bytes) ? chunk_left_bytes : size;
3225        size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size;
3226
3227        src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] +
3228                (buff_offset % dmachunk);
3229        memcpy(buf, (void *)src_addr, size);
3230        spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3231
3232        return size;
3233}
3234
3235static ssize_t
3236fw_crash_buffer_size_show(struct device *cdev,
3237        struct device_attribute *attr, char *buf)
3238{
3239        struct Scsi_Host *shost = class_to_shost(cdev);
3240        struct megasas_instance *instance =
3241                (struct megasas_instance *) shost->hostdata;
3242
3243        return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)
3244                ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE);
3245}
3246
3247static ssize_t
3248fw_crash_state_store(struct device *cdev,
3249        struct device_attribute *attr, const char *buf, size_t count)
3250{
3251        struct Scsi_Host *shost = class_to_shost(cdev);
3252        struct megasas_instance *instance =
3253                (struct megasas_instance *) shost->hostdata;
3254        int val = 0;
3255        unsigned long flags;
3256
3257        if (kstrtoint(buf, 0, &val) != 0)
3258                return -EINVAL;
3259
3260        if ((val <= AVAILABLE || val > COPY_ERROR)) {
3261                dev_err(&instance->pdev->dev, "application updates invalid "
3262                        "firmware crash state\n");
3263                return -EINVAL;
3264        }
3265
3266        instance->fw_crash_state = val;
3267
3268        if ((val == COPIED) || (val == COPY_ERROR)) {
3269                spin_lock_irqsave(&instance->crashdump_lock, flags);
3270                megasas_free_host_crash_buffer(instance);
3271                spin_unlock_irqrestore(&instance->crashdump_lock, flags);
3272                if (val == COPY_ERROR)
3273                        dev_info(&instance->pdev->dev, "application failed to "
3274                                "copy Firmware crash dump\n");
3275                else
3276                        dev_info(&instance->pdev->dev, "Firmware crash dump "
3277                                "copied successfully\n");
3278        }
3279        return strlen(buf);
3280}
3281
3282static ssize_t
3283fw_crash_state_show(struct device *cdev,
3284        struct device_attribute *attr, char *buf)
3285{
3286        struct Scsi_Host *shost = class_to_shost(cdev);
3287        struct megasas_instance *instance =
3288                (struct megasas_instance *) shost->hostdata;
3289
3290        return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state);
3291}
3292
3293static ssize_t
3294page_size_show(struct device *cdev,
3295        struct device_attribute *attr, char *buf)
3296{
3297        return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1);
3298}
3299
3300static ssize_t
3301ldio_outstanding_show(struct device *cdev, struct device_attribute *attr,
3302        char *buf)
3303{
3304        struct Scsi_Host *shost = class_to_shost(cdev);
3305        struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3306
3307        return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->ldio_outstanding));
3308}
3309
3310static ssize_t
3311fw_cmds_outstanding_show(struct device *cdev,
3312                                 struct device_attribute *attr, char *buf)
3313{
3314        struct Scsi_Host *shost = class_to_shost(cdev);
3315        struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3316
3317        return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->fw_outstanding));
3318}
3319
3320static ssize_t
3321enable_sdev_max_qd_show(struct device *cdev,
3322        struct device_attribute *attr, char *buf)
3323{
3324        struct Scsi_Host *shost = class_to_shost(cdev);
3325        struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3326
3327        return snprintf(buf, PAGE_SIZE, "%d\n", instance->enable_sdev_max_qd);
3328}
3329
3330static ssize_t
3331enable_sdev_max_qd_store(struct device *cdev,
3332        struct device_attribute *attr, const char *buf, size_t count)
3333{
3334        struct Scsi_Host *shost = class_to_shost(cdev);
3335        struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3336        u32 val = 0;
3337        bool is_target_prop;
3338        int ret_target_prop = DCMD_FAILED;
3339        struct scsi_device *sdev;
3340
3341        if (kstrtou32(buf, 0, &val) != 0) {
3342                pr_err("megasas: could not set enable_sdev_max_qd\n");
3343                return -EINVAL;
3344        }
3345
3346        mutex_lock(&instance->reset_mutex);
3347        if (val)
3348                instance->enable_sdev_max_qd = true;
3349        else
3350                instance->enable_sdev_max_qd = false;
3351
3352        shost_for_each_device(sdev, shost) {
3353                ret_target_prop = megasas_get_target_prop(instance, sdev);
3354                is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
3355                megasas_set_fw_assisted_qd(sdev, is_target_prop);
3356        }
3357        mutex_unlock(&instance->reset_mutex);
3358
3359        return strlen(buf);
3360}
3361
3362static ssize_t
3363dump_system_regs_show(struct device *cdev,
3364                               struct device_attribute *attr, char *buf)
3365{
3366        struct Scsi_Host *shost = class_to_shost(cdev);
3367        struct megasas_instance *instance =
3368                        (struct megasas_instance *)shost->hostdata;
3369
3370        return megasas_dump_sys_regs(instance->reg_set, buf);
3371}
3372
3373static ssize_t
3374raid_map_id_show(struct device *cdev, struct device_attribute *attr,
3375                          char *buf)
3376{
3377        struct Scsi_Host *shost = class_to_shost(cdev);
3378        struct megasas_instance *instance =
3379                        (struct megasas_instance *)shost->hostdata;
3380
3381        return snprintf(buf, PAGE_SIZE, "%ld\n",
3382                        (unsigned long)instance->map_id);
3383}
3384
3385static DEVICE_ATTR_RW(fw_crash_buffer);
3386static DEVICE_ATTR_RO(fw_crash_buffer_size);
3387static DEVICE_ATTR_RW(fw_crash_state);
3388static DEVICE_ATTR_RO(page_size);
3389static DEVICE_ATTR_RO(ldio_outstanding);
3390static DEVICE_ATTR_RO(fw_cmds_outstanding);
3391static DEVICE_ATTR_RW(enable_sdev_max_qd);
3392static DEVICE_ATTR_RO(dump_system_regs);
3393static DEVICE_ATTR_RO(raid_map_id);
3394
3395static struct device_attribute *megaraid_host_attrs[] = {
3396        &dev_attr_fw_crash_buffer_size,
3397        &dev_attr_fw_crash_buffer,
3398        &dev_attr_fw_crash_state,
3399        &dev_attr_page_size,
3400        &dev_attr_ldio_outstanding,
3401        &dev_attr_fw_cmds_outstanding,
3402        &dev_attr_enable_sdev_max_qd,
3403        &dev_attr_dump_system_regs,
3404        &dev_attr_raid_map_id,
3405        NULL,
3406};
3407
3408/*
3409 * Scsi host template for megaraid_sas driver
3410 */
3411static struct scsi_host_template megasas_template = {
3412
3413        .module = THIS_MODULE,
3414        .name = "Avago SAS based MegaRAID driver",
3415        .proc_name = "megaraid_sas",
3416        .slave_configure = megasas_slave_configure,
3417        .slave_alloc = megasas_slave_alloc,
3418        .slave_destroy = megasas_slave_destroy,
3419        .queuecommand = megasas_queue_command,
3420        .eh_target_reset_handler = megasas_reset_target,
3421        .eh_abort_handler = megasas_task_abort,
3422        .eh_host_reset_handler = megasas_reset_bus_host,
3423        .eh_timed_out = megasas_reset_timer,
3424        .shost_attrs = megaraid_host_attrs,
3425        .bios_param = megasas_bios_param,
3426        .change_queue_depth = scsi_change_queue_depth,
3427        .max_segment_size = 0xffffffff,
3428};
3429
3430/**
3431 * megasas_complete_int_cmd -   Completes an internal command
3432 * @instance:                   Adapter soft state
3433 * @cmd:                        Command to be completed
3434 *
3435 * The megasas_issue_blocked_cmd() function waits for a command to complete
3436 * after it issues a command. This function wakes up that waiting routine by
3437 * calling wake_up() on the wait queue.
3438 */
3439static void
3440megasas_complete_int_cmd(struct megasas_instance *instance,
3441                         struct megasas_cmd *cmd)
3442{
3443        if (cmd->cmd_status_drv == DCMD_INIT)
3444                cmd->cmd_status_drv =
3445                (cmd->frame->io.cmd_status == MFI_STAT_OK) ?
3446                DCMD_SUCCESS : DCMD_FAILED;
3447
3448        wake_up(&instance->int_cmd_wait_q);
3449}
3450
3451/**
3452 * megasas_complete_abort -     Completes aborting a command
3453 * @instance:                   Adapter soft state
3454 * @cmd:                        Cmd that was issued to abort another cmd
3455 *
3456 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
3457 * after it issues an abort on a previously issued command. This function
3458 * wakes up all functions waiting on the same wait queue.
3459 */
3460static void
3461megasas_complete_abort(struct megasas_instance *instance,
3462                       struct megasas_cmd *cmd)
3463{
3464        if (cmd->sync_cmd) {
3465                cmd->sync_cmd = 0;
3466                cmd->cmd_status_drv = DCMD_SUCCESS;
3467                wake_up(&instance->abort_cmd_wait_q);
3468        }
3469}
3470
3471/**
3472 * megasas_complete_cmd -       Completes a command
3473 * @instance:                   Adapter soft state
3474 * @cmd:                        Command to be completed
3475 * @alt_status:                 If non-zero, use this value as status to
3476 *                              SCSI mid-layer instead of the value returned
3477 *                              by the FW. This should be used if caller wants
3478 *                              an alternate status (as in the case of aborted
3479 *                              commands)
3480 */
3481void
3482megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
3483                     u8 alt_status)
3484{
3485        int exception = 0;
3486        struct megasas_header *hdr = &cmd->frame->hdr;
3487        unsigned long flags;
3488        struct fusion_context *fusion = instance->ctrl_context;
3489        u32 opcode, status;
3490
3491        /* flag for the retry reset */
3492        cmd->retry_for_fw_reset = 0;
3493
3494        if (cmd->scmd)
3495                cmd->scmd->SCp.ptr = NULL;
3496
3497        switch (hdr->cmd) {
3498        case MFI_CMD_INVALID:
3499                /* Some older 1068 controller FW may keep a pended
3500                   MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel
3501                   when booting the kdump kernel.  Ignore this command to
3502                   prevent a kernel panic on shutdown of the kdump kernel. */
3503                dev_warn(&instance->pdev->dev, "MFI_CMD_INVALID command "
3504                       "completed\n");
3505                dev_warn(&instance->pdev->dev, "If you have a controller "
3506                       "other than PERC5, please upgrade your firmware\n");
3507                break;
3508        case MFI_CMD_PD_SCSI_IO:
3509        case MFI_CMD_LD_SCSI_IO:
3510
3511                /*
3512                 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
3513                 * issued either through an IO path or an IOCTL path. If it
3514                 * was via IOCTL, we will send it to internal completion.
3515                 */
3516                if (cmd->sync_cmd) {
3517                        cmd->sync_cmd = 0;
3518                        megasas_complete_int_cmd(instance, cmd);
3519                        break;
3520                }
3521                /* fall through */
3522
3523        case MFI_CMD_LD_READ:
3524        case MFI_CMD_LD_WRITE:
3525
3526                if (alt_status) {
3527                        cmd->scmd->result = alt_status << 16;
3528                        exception = 1;
3529                }
3530
3531                if (exception) {
3532
3533                        atomic_dec(&instance->fw_outstanding);
3534
3535                        scsi_dma_unmap(cmd->scmd);
3536                        cmd->scmd->scsi_done(cmd->scmd);
3537                        megasas_return_cmd(instance, cmd);
3538
3539                        break;
3540                }
3541
3542                switch (hdr->cmd_status) {
3543
3544                case MFI_STAT_OK:
3545                        cmd->scmd->result = DID_OK << 16;
3546                        break;
3547
3548                case MFI_STAT_SCSI_IO_FAILED:
3549                case MFI_STAT_LD_INIT_IN_PROGRESS:
3550                        cmd->scmd->result =
3551                            (DID_ERROR << 16) | hdr->scsi_status;
3552                        break;
3553
3554                case MFI_STAT_SCSI_DONE_WITH_ERROR:
3555
3556                        cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
3557
3558                        if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
3559                                memset(cmd->scmd->sense_buffer, 0,
3560                                       SCSI_SENSE_BUFFERSIZE);
3561                                memcpy(cmd->scmd->sense_buffer, cmd->sense,
3562                                       hdr->sense_len);
3563
3564                                cmd->scmd->result |= DRIVER_SENSE << 24;
3565                        }
3566
3567                        break;
3568
3569                case MFI_STAT_LD_OFFLINE:
3570                case MFI_STAT_DEVICE_NOT_FOUND:
3571                        cmd->scmd->result = DID_BAD_TARGET << 16;
3572                        break;
3573
3574                default:
3575                        dev_printk(KERN_DEBUG, &instance->pdev->dev, "MFI FW status %#x\n",
3576                               hdr->cmd_status);
3577                        cmd->scmd->result = DID_ERROR << 16;
3578                        break;
3579                }
3580
3581                atomic_dec(&instance->fw_outstanding);
3582
3583                scsi_dma_unmap(cmd->scmd);
3584                cmd->scmd->scsi_done(cmd->scmd);
3585                megasas_return_cmd(instance, cmd);
3586
3587                break;
3588
3589        case MFI_CMD_SMP:
3590        case MFI_CMD_STP:
3591        case MFI_CMD_NVME:
3592        case MFI_CMD_TOOLBOX:
3593                megasas_complete_int_cmd(instance, cmd);
3594                break;
3595
3596        case MFI_CMD_DCMD:
3597                opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
3598                /* Check for LD map update */
3599                if ((opcode == MR_DCMD_LD_MAP_GET_INFO)
3600                        && (cmd->frame->dcmd.mbox.b[1] == 1)) {
3601                        fusion->fast_path_io = 0;
3602                        spin_lock_irqsave(instance->host->host_lock, flags);
3603                        status = cmd->frame->hdr.cmd_status;
3604                        instance->map_update_cmd = NULL;
3605                        if (status != MFI_STAT_OK) {
3606                                if (status != MFI_STAT_NOT_FOUND)
3607                                        dev_warn(&instance->pdev->dev, "map syncfailed, status = 0x%x\n",
3608                                               cmd->frame->hdr.cmd_status);
3609                                else {
3610                                        megasas_return_cmd(instance, cmd);
3611                                        spin_unlock_irqrestore(
3612                                                instance->host->host_lock,
3613                                                flags);
3614                                        break;
3615                                }
3616                        }
3617
3618                        megasas_return_cmd(instance, cmd);
3619
3620                        /*
3621                         * Set fast path IO to ZERO.
3622                         * Validate Map will set proper value.
3623                         * Meanwhile all IOs will go as LD IO.
3624                         */
3625                        if (status == MFI_STAT_OK &&
3626                            (MR_ValidateMapInfo(instance, (instance->map_id + 1)))) {
3627                                instance->map_id++;
3628                                fusion->fast_path_io = 1;
3629                        } else {
3630                                fusion->fast_path_io = 0;
3631                        }
3632
3633                        megasas_sync_map_info(instance);
3634                        spin_unlock_irqrestore(instance->host->host_lock,
3635                                               flags);
3636                        break;
3637                }
3638                if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
3639                    opcode == MR_DCMD_CTRL_EVENT_GET) {
3640                        spin_lock_irqsave(&poll_aen_lock, flags);
3641                        megasas_poll_wait_aen = 0;
3642                        spin_unlock_irqrestore(&poll_aen_lock, flags);
3643                }
3644
3645                /* FW has an updated PD sequence */
3646                if ((opcode == MR_DCMD_SYSTEM_PD_MAP_GET_INFO) &&
3647                        (cmd->frame->dcmd.mbox.b[0] == 1)) {
3648
3649                        spin_lock_irqsave(instance->host->host_lock, flags);
3650                        status = cmd->frame->hdr.cmd_status;
3651                        instance->jbod_seq_cmd = NULL;
3652                        megasas_return_cmd(instance, cmd);
3653
3654                        if (status == MFI_STAT_OK) {
3655                                instance->pd_seq_map_id++;
3656                                /* Re-register a pd sync seq num cmd */
3657                                if (megasas_sync_pd_seq_num(instance, true))
3658                                        instance->use_seqnum_jbod_fp = false;
3659                        } else
3660                                instance->use_seqnum_jbod_fp = false;
3661
3662                        spin_unlock_irqrestore(instance->host->host_lock, flags);
3663                        break;
3664                }
3665
3666                /*
3667                 * See if got an event notification
3668                 */
3669                if (opcode == MR_DCMD_CTRL_EVENT_WAIT)
3670                        megasas_service_aen(instance, cmd);
3671                else
3672                        megasas_complete_int_cmd(instance, cmd);
3673
3674                break;
3675
3676        case MFI_CMD_ABORT:
3677                /*
3678                 * Cmd issued to abort another cmd returned
3679                 */
3680                megasas_complete_abort(instance, cmd);
3681                break;
3682
3683        default:
3684                dev_info(&instance->pdev->dev, "Unknown command completed! [0x%X]\n",
3685                       hdr->cmd);
3686                megasas_complete_int_cmd(instance, cmd);
3687                break;
3688        }
3689}
3690
3691/**
3692 * megasas_issue_pending_cmds_again -   issue all pending cmds
3693 *                                      in FW again because of the fw reset
3694 * @instance:                           Adapter soft state
3695 */
3696static inline void
3697megasas_issue_pending_cmds_again(struct megasas_instance *instance)
3698{
3699        struct megasas_cmd *cmd;
3700        struct list_head clist_local;
3701        union megasas_evt_class_locale class_locale;
3702        unsigned long flags;
3703        u32 seq_num;
3704
3705        INIT_LIST_HEAD(&clist_local);
3706        spin_lock_irqsave(&instance->hba_lock, flags);
3707        list_splice_init(&instance->internal_reset_pending_q, &clist_local);
3708        spin_unlock_irqrestore(&instance->hba_lock, flags);
3709
3710        while (!list_empty(&clist_local)) {
3711                cmd = list_entry((&clist_local)->next,
3712                                        struct megasas_cmd, list);
3713                list_del_init(&cmd->list);
3714
3715                if (cmd->sync_cmd || cmd->scmd) {
3716                        dev_notice(&instance->pdev->dev, "command %p, %p:%d"
3717                                "detected to be pending while HBA reset\n",
3718                                        cmd, cmd->scmd, cmd->sync_cmd);
3719
3720                        cmd->retry_for_fw_reset++;
3721
3722                        if (cmd->retry_for_fw_reset == 3) {
3723                                dev_notice(&instance->pdev->dev, "cmd %p, %p:%d"
3724                                        "was tried multiple times during reset."
3725                                        "Shutting down the HBA\n",
3726                                        cmd, cmd->scmd, cmd->sync_cmd);
3727                                instance->instancet->disable_intr(instance);
3728                                atomic_set(&instance->fw_reset_no_pci_access, 1);
3729                                megaraid_sas_kill_hba(instance);
3730                                return;
3731                        }
3732                }
3733
3734                if (cmd->sync_cmd == 1) {
3735                        if (cmd->scmd) {
3736                                dev_notice(&instance->pdev->dev, "unexpected"
3737                                        "cmd attached to internal command!\n");
3738                        }
3739                        dev_notice(&instance->pdev->dev, "%p synchronous cmd"
3740                                                "on the internal reset queue,"
3741                                                "issue it again.\n", cmd);
3742                        cmd->cmd_status_drv = DCMD_INIT;
3743                        instance->instancet->fire_cmd(instance,
3744                                                        cmd->frame_phys_addr,
3745                                                        0, instance->reg_set);
3746                } else if (cmd->scmd) {
3747                        dev_notice(&instance->pdev->dev, "%p scsi cmd [%02x]"
3748                        "detected on the internal queue, issue again.\n",
3749                        cmd, cmd->scmd->cmnd[0]);
3750
3751                        atomic_inc(&instance->fw_outstanding);
3752                        instance->instancet->fire_cmd(instance,
3753                                        cmd->frame_phys_addr,
3754                                        cmd->frame_count-1, instance->reg_set);
3755                } else {
3756                        dev_notice(&instance->pdev->dev, "%p unexpected cmd on the"
3757                                "internal reset defer list while re-issue!!\n",
3758                                cmd);
3759                }
3760        }
3761
3762        if (instance->aen_cmd) {
3763                dev_notice(&instance->pdev->dev, "aen_cmd in def process\n");
3764                megasas_return_cmd(instance, instance->aen_cmd);
3765
3766                instance->aen_cmd = NULL;
3767        }
3768
3769        /*
3770         * Initiate AEN (Asynchronous Event Notification)
3771         */
3772        seq_num = instance->last_seq_num;
3773        class_locale.members.reserved = 0;
3774        class_locale.members.locale = MR_EVT_LOCALE_ALL;
3775        class_locale.members.class = MR_EVT_CLASS_DEBUG;
3776
3777        megasas_register_aen(instance, seq_num, class_locale.word);
3778}
3779
3780/**
3781 * Move the internal reset pending commands to a deferred queue.
3782 *
3783 * We move the commands pending at internal reset time to a
3784 * pending queue. This queue would be flushed after successful
3785 * completion of the internal reset sequence. if the internal reset
3786 * did not complete in time, the kernel reset handler would flush
3787 * these commands.
3788 **/
3789static void
3790megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
3791{
3792        struct megasas_cmd *cmd;
3793        int i;
3794        u16 max_cmd = instance->max_fw_cmds;
3795        u32 defer_index;
3796        unsigned long flags;
3797
3798        defer_index = 0;
3799        spin_lock_irqsave(&instance->mfi_pool_lock, flags);
3800        for (i = 0; i < max_cmd; i++) {
3801                cmd = instance->cmd_list[i];
3802                if (cmd->sync_cmd == 1 || cmd->scmd) {
3803                        dev_notice(&instance->pdev->dev, "moving cmd[%d]:%p:%d:%p"
3804                                        "on the defer queue as internal\n",
3805                                defer_index, cmd, cmd->sync_cmd, cmd->scmd);
3806
3807                        if (!list_empty(&cmd->list)) {
3808                                dev_notice(&instance->pdev->dev, "ERROR while"
3809                                        " moving this cmd:%p, %d %p, it was"
3810                                        "discovered on some list?\n",
3811                                        cmd, cmd->sync_cmd, cmd->scmd);
3812
3813                                list_del_init(&cmd->list);
3814                        }
3815                        defer_index++;
3816                        list_add_tail(&cmd->list,
3817                                &instance->internal_reset_pending_q);
3818                }
3819        }
3820        spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
3821}
3822
3823
3824static void
3825process_fw_state_change_wq(struct work_struct *work)
3826{
3827        struct megasas_instance *instance =
3828                container_of(work, struct megasas_instance, work_init);
3829        u32 wait;
3830        unsigned long flags;
3831
3832    if (atomic_read(&instance->adprecovery) != MEGASAS_ADPRESET_SM_INFAULT) {
3833                dev_notice(&instance->pdev->dev, "error, recovery st %x\n",
3834                                atomic_read(&instance->adprecovery));
3835                return ;
3836        }
3837
3838        if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
3839                dev_notice(&instance->pdev->dev, "FW detected to be in fault"
3840                                        "state, restarting it...\n");
3841
3842                instance->instancet->disable_intr(instance);
3843                atomic_set(&instance->fw_outstanding, 0);
3844
3845                atomic_set(&instance->fw_reset_no_pci_access, 1);
3846                instance->instancet->adp_reset(instance, instance->reg_set);
3847                atomic_set(&instance->fw_reset_no_pci_access, 0);
3848
3849                dev_notice(&instance->pdev->dev, "FW restarted successfully,"
3850                                        "initiating next stage...\n");
3851
3852                dev_notice(&instance->pdev->dev, "HBA recovery state machine,"
3853                                        "state 2 starting...\n");
3854
3855                /* waiting for about 20 second before start the second init */
3856                for (wait = 0; wait < 30; wait++) {
3857                        msleep(1000);
3858                }
3859
3860                if (megasas_transition_to_ready(instance, 1)) {
3861                        dev_notice(&instance->pdev->dev, "adapter not ready\n");
3862
3863                        atomic_set(&instance->fw_reset_no_pci_access, 1);
3864                        megaraid_sas_kill_hba(instance);
3865                        return ;
3866                }
3867
3868                if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
3869                        (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
3870                        (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
3871                        ) {
3872                        *instance->consumer = *instance->producer;
3873                } else {
3874                        *instance->consumer = 0;
3875                        *instance->producer = 0;
3876                }
3877
3878                megasas_issue_init_mfi(instance);
3879
3880                spin_lock_irqsave(&instance->hba_lock, flags);
3881                atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
3882                spin_unlock_irqrestore(&instance->hba_lock, flags);
3883                instance->instancet->enable_intr(instance);
3884
3885                megasas_issue_pending_cmds_again(instance);
3886                instance->issuepend_done = 1;
3887        }
3888}
3889
3890/**
3891 * megasas_deplete_reply_queue -        Processes all completed commands
3892 * @instance:                           Adapter soft state
3893 * @alt_status:                         Alternate status to be returned to
3894 *                                      SCSI mid-layer instead of the status
3895 *                                      returned by the FW
3896 * Note: this must be called with hba lock held
3897 */
3898static int
3899megasas_deplete_reply_queue(struct megasas_instance *instance,
3900                                        u8 alt_status)
3901{
3902        u32 mfiStatus;
3903        u32 fw_state;
3904
3905        if ((mfiStatus = instance->instancet->check_reset(instance,
3906                                        instance->reg_set)) == 1) {
3907                return IRQ_HANDLED;
3908        }
3909
3910        mfiStatus = instance->instancet->clear_intr(instance);
3911        if (mfiStatus == 0) {
3912                /* Hardware may not set outbound_intr_status in MSI-X mode */
3913                if (!instance->msix_vectors)
3914                        return IRQ_NONE;
3915        }
3916
3917        instance->mfiStatus = mfiStatus;
3918
3919        if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
3920                fw_state = instance->instancet->read_fw_status_reg(
3921                                instance) & MFI_STATE_MASK;
3922
3923                if (fw_state != MFI_STATE_FAULT) {
3924                        dev_notice(&instance->pdev->dev, "fw state:%x\n",
3925                                                fw_state);
3926                }
3927
3928                if ((fw_state == MFI_STATE_FAULT) &&
3929                                (instance->disableOnlineCtrlReset == 0)) {
3930                        dev_notice(&instance->pdev->dev, "wait adp restart\n");
3931
3932                        if ((instance->pdev->device ==
3933                                        PCI_DEVICE_ID_LSI_SAS1064R) ||
3934                                (instance->pdev->device ==
3935                                        PCI_DEVICE_ID_DELL_PERC5) ||
3936                                (instance->pdev->device ==
3937                                        PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
3938
3939                                *instance->consumer =
3940                                        cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
3941                        }
3942
3943
3944                        instance->instancet->disable_intr(instance);
3945                        atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
3946                        instance->issuepend_done = 0;
3947
3948                        atomic_set(&instance->fw_outstanding, 0);
3949                        megasas_internal_reset_defer_cmds(instance);
3950
3951                        dev_notice(&instance->pdev->dev, "fwState=%x, stage:%d\n",
3952                                        fw_state, atomic_read(&instance->adprecovery));
3953
3954                        schedule_work(&instance->work_init);
3955                        return IRQ_HANDLED;
3956
3957                } else {
3958                        dev_notice(&instance->pdev->dev, "fwstate:%x, dis_OCR=%x\n",
3959                                fw_state, instance->disableOnlineCtrlReset);
3960                }
3961        }
3962
3963        tasklet_schedule(&instance->isr_tasklet);
3964        return IRQ_HANDLED;
3965}
3966/**
3967 * megasas_isr - isr entry point
3968 */
3969static irqreturn_t megasas_isr(int irq, void *devp)
3970{
3971        struct megasas_irq_context *irq_context = devp;
3972        struct megasas_instance *instance = irq_context->instance;
3973        unsigned long flags;
3974        irqreturn_t rc;
3975
3976        if (atomic_read(&instance->fw_reset_no_pci_access))
3977                return IRQ_HANDLED;
3978
3979        spin_lock_irqsave(&instance->hba_lock, flags);
3980        rc = megasas_deplete_reply_queue(instance, DID_OK);
3981        spin_unlock_irqrestore(&instance->hba_lock, flags);
3982
3983        return rc;
3984}
3985
3986/**
3987 * megasas_transition_to_ready -        Move the FW to READY state
3988 * @instance:                           Adapter soft state
3989 *
3990 * During the initialization, FW passes can potentially be in any one of
3991 * several possible states. If the FW in operational, waiting-for-handshake
3992 * states, driver must take steps to bring it to ready state. Otherwise, it
3993 * has to wait for the ready state.
3994 */
3995int
3996megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
3997{
3998        int i;
3999        u8 max_wait;
4000        u32 fw_state;
4001        u32 abs_state, curr_abs_state;
4002
4003        abs_state = instance->instancet->read_fw_status_reg(instance);
4004        fw_state = abs_state & MFI_STATE_MASK;
4005
4006        if (fw_state != MFI_STATE_READY)
4007                dev_info(&instance->pdev->dev, "Waiting for FW to come to ready"
4008                       " state\n");
4009
4010        while (fw_state != MFI_STATE_READY) {
4011
4012                switch (fw_state) {
4013
4014                case MFI_STATE_FAULT:
4015                        dev_printk(KERN_ERR, &instance->pdev->dev,
4016                                   "FW in FAULT state, Fault code:0x%x subcode:0x%x func:%s\n",
4017                                   abs_state & MFI_STATE_FAULT_CODE,
4018                                   abs_state & MFI_STATE_FAULT_SUBCODE, __func__);
4019                        if (ocr) {
4020                                max_wait = MEGASAS_RESET_WAIT_TIME;
4021                                break;
4022                        } else {
4023                                dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4024                                megasas_dump_reg_set(instance->reg_set);
4025                                return -ENODEV;
4026                        }
4027
4028                case MFI_STATE_WAIT_HANDSHAKE:
4029                        /*
4030                         * Set the CLR bit in inbound doorbell
4031                         */
4032                        if ((instance->pdev->device ==
4033                                PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4034                                (instance->pdev->device ==
4035                                 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4036                                (instance->adapter_type != MFI_SERIES))
4037                                writel(
4038                                  MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
4039                                  &instance->reg_set->doorbell);
4040                        else
4041                                writel(
4042                                    MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
4043                                        &instance->reg_set->inbound_doorbell);
4044
4045                        max_wait = MEGASAS_RESET_WAIT_TIME;
4046                        break;
4047
4048                case MFI_STATE_BOOT_MESSAGE_PENDING:
4049                        if ((instance->pdev->device ==
4050                             PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4051                                (instance->pdev->device ==
4052                                 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4053                                (instance->adapter_type != MFI_SERIES))
4054                                writel(MFI_INIT_HOTPLUG,
4055                                       &instance->reg_set->doorbell);
4056                        else
4057                                writel(MFI_INIT_HOTPLUG,
4058                                        &instance->reg_set->inbound_doorbell);
4059
4060                        max_wait = MEGASAS_RESET_WAIT_TIME;
4061                        break;
4062
4063                case MFI_STATE_OPERATIONAL:
4064                        /*
4065                         * Bring it to READY state; assuming max wait 10 secs
4066                         */
4067                        instance->instancet->disable_intr(instance);
4068                        if ((instance->pdev->device ==
4069                                PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4070                                (instance->pdev->device ==
4071                                PCI_DEVICE_ID_LSI_SAS0071SKINNY)  ||
4072                                (instance->adapter_type != MFI_SERIES)) {
4073                                writel(MFI_RESET_FLAGS,
4074                                        &instance->reg_set->doorbell);
4075
4076                                if (instance->adapter_type != MFI_SERIES) {
4077                                        for (i = 0; i < (10 * 1000); i += 20) {
4078                                                if (megasas_readl(
4079                                                            instance,
4080                                                            &instance->
4081                                                            reg_set->
4082                                                            doorbell) & 1)
4083                                                        msleep(20);
4084                                                else
4085                                                        break;
4086                                        }
4087                                }
4088                        } else
4089                                writel(MFI_RESET_FLAGS,
4090                                        &instance->reg_set->inbound_doorbell);
4091
4092                        max_wait = MEGASAS_RESET_WAIT_TIME;
4093                        break;
4094
4095                case MFI_STATE_UNDEFINED:
4096                        /*
4097                         * This state should not last for more than 2 seconds
4098                         */
4099                        max_wait = MEGASAS_RESET_WAIT_TIME;
4100                        break;
4101
4102                case MFI_STATE_BB_INIT:
4103                        max_wait = MEGASAS_RESET_WAIT_TIME;
4104                        break;
4105
4106                case MFI_STATE_FW_INIT:
4107                        max_wait = MEGASAS_RESET_WAIT_TIME;
4108                        break;
4109
4110                case MFI_STATE_FW_INIT_2:
4111                        max_wait = MEGASAS_RESET_WAIT_TIME;
4112                        break;
4113
4114                case MFI_STATE_DEVICE_SCAN:
4115                        max_wait = MEGASAS_RESET_WAIT_TIME;
4116                        break;
4117
4118                case MFI_STATE_FLUSH_CACHE:
4119                        max_wait = MEGASAS_RESET_WAIT_TIME;
4120                        break;
4121
4122                default:
4123                        dev_printk(KERN_DEBUG, &instance->pdev->dev, "Unknown state 0x%x\n",
4124                               fw_state);
4125                        dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4126                        megasas_dump_reg_set(instance->reg_set);
4127                        return -ENODEV;
4128                }
4129
4130                /*
4131                 * The cur_state should not last for more than max_wait secs
4132                 */
4133                for (i = 0; i < max_wait * 50; i++) {
4134                        curr_abs_state = instance->instancet->
4135                                read_fw_status_reg(instance);
4136
4137                        if (abs_state == curr_abs_state) {
4138                                msleep(20);
4139                        } else
4140                                break;
4141                }
4142
4143                /*
4144                 * Return error if fw_state hasn't changed after max_wait
4145                 */
4146                if (curr_abs_state == abs_state) {
4147                        dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW state [%d] hasn't changed "
4148                               "in %d secs\n", fw_state, max_wait);
4149                        dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4150                        megasas_dump_reg_set(instance->reg_set);
4151                        return -ENODEV;
4152                }
4153
4154                abs_state = curr_abs_state;
4155                fw_state = curr_abs_state & MFI_STATE_MASK;
4156        }
4157        dev_info(&instance->pdev->dev, "FW now in Ready state\n");
4158
4159        return 0;
4160}
4161
4162/**
4163 * megasas_teardown_frame_pool -        Destroy the cmd frame DMA pool
4164 * @instance:                           Adapter soft state
4165 */
4166static void megasas_teardown_frame_pool(struct megasas_instance *instance)
4167{
4168        int i;
4169        u16 max_cmd = instance->max_mfi_cmds;
4170        struct megasas_cmd *cmd;
4171
4172        if (!instance->frame_dma_pool)
4173                return;
4174
4175        /*
4176         * Return all frames to pool
4177         */
4178        for (i = 0; i < max_cmd; i++) {
4179
4180                cmd = instance->cmd_list[i];
4181
4182                if (cmd->frame)
4183                        dma_pool_free(instance->frame_dma_pool, cmd->frame,
4184                                      cmd->frame_phys_addr);
4185
4186                if (cmd->sense)
4187                        dma_pool_free(instance->sense_dma_pool, cmd->sense,
4188                                      cmd->sense_phys_addr);
4189        }
4190
4191        /*
4192         * Now destroy the pool itself
4193         */
4194        dma_pool_destroy(instance->frame_dma_pool);
4195        dma_pool_destroy(instance->sense_dma_pool);
4196
4197        instance->frame_dma_pool = NULL;
4198        instance->sense_dma_pool = NULL;
4199}
4200
4201/**
4202 * megasas_create_frame_pool -  Creates DMA pool for cmd frames
4203 * @instance:                   Adapter soft state
4204 *
4205 * Each command packet has an embedded DMA memory buffer that is used for
4206 * filling MFI frame and the SG list that immediately follows the frame. This
4207 * function creates those DMA memory buffers for each command packet by using
4208 * PCI pool facility.
4209 */
4210static int megasas_create_frame_pool(struct megasas_instance *instance)
4211{
4212        int i;
4213        u16 max_cmd;
4214        u32 frame_count;
4215        struct megasas_cmd *cmd;
4216
4217        max_cmd = instance->max_mfi_cmds;
4218
4219        /*
4220         * For MFI controllers.
4221         * max_num_sge = 60
4222         * max_sge_sz  = 16 byte (sizeof megasas_sge_skinny)
4223         * Total 960 byte (15 MFI frame of 64 byte)
4224         *
4225         * Fusion adapter require only 3 extra frame.
4226         * max_num_sge = 16 (defined as MAX_IOCTL_SGE)
4227         * max_sge_sz  = 12 byte (sizeof  megasas_sge64)
4228         * Total 192 byte (3 MFI frame of 64 byte)
4229         */
4230        frame_count = (instance->adapter_type == MFI_SERIES) ?
4231                        (15 + 1) : (3 + 1);
4232        instance->mfi_frame_size = MEGAMFI_FRAME_SIZE * frame_count;
4233        /*
4234         * Use DMA pool facility provided by PCI layer
4235         */
4236        instance->frame_dma_pool = dma_pool_create("megasas frame pool",
4237                                        &instance->pdev->dev,
4238                                        instance->mfi_frame_size, 256, 0);
4239
4240        if (!instance->frame_dma_pool) {
4241                dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup frame pool\n");
4242                return -ENOMEM;
4243        }
4244
4245        instance->sense_dma_pool = dma_pool_create("megasas sense pool",
4246                                                   &instance->pdev->dev, 128,
4247                                                   4, 0);
4248
4249        if (!instance->sense_dma_pool) {
4250                dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup sense pool\n");
4251
4252                dma_pool_destroy(instance->frame_dma_pool);
4253                instance->frame_dma_pool = NULL;
4254
4255                return -ENOMEM;
4256        }
4257
4258        /*
4259         * Allocate and attach a frame to each of the commands in cmd_list.
4260         * By making cmd->index as the context instead of the &cmd, we can
4261         * always use 32bit context regardless of the architecture
4262         */
4263        for (i = 0; i < max_cmd; i++) {
4264
4265                cmd = instance->cmd_list[i];
4266
4267                cmd->frame = dma_pool_zalloc(instance->frame_dma_pool,
4268                                            GFP_KERNEL, &cmd->frame_phys_addr);
4269
4270                cmd->sense = dma_pool_alloc(instance->sense_dma_pool,
4271                                            GFP_KERNEL, &cmd->sense_phys_addr);
4272
4273                /*
4274                 * megasas_teardown_frame_pool() takes care of freeing
4275                 * whatever has been allocated
4276                 */
4277                if (!cmd->frame || !cmd->sense) {
4278                        dev_printk(KERN_DEBUG, &instance->pdev->dev, "dma_pool_alloc failed\n");
4279                        megasas_teardown_frame_pool(instance);
4280                        return -ENOMEM;
4281                }
4282
4283                cmd->frame->io.context = cpu_to_le32(cmd->index);
4284                cmd->frame->io.pad_0 = 0;
4285                if ((instance->adapter_type == MFI_SERIES) && reset_devices)
4286                        cmd->frame->hdr.cmd = MFI_CMD_INVALID;
4287        }
4288
4289        return 0;
4290}
4291
4292/**
4293 * megasas_free_cmds -  Free all the cmds in the free cmd pool
4294 * @instance:           Adapter soft state
4295 */
4296void megasas_free_cmds(struct megasas_instance *instance)
4297{
4298        int i;
4299
4300        /* First free the MFI frame pool */
4301        megasas_teardown_frame_pool(instance);
4302
4303        /* Free all the commands in the cmd_list */
4304        for (i = 0; i < instance->max_mfi_cmds; i++)
4305
4306                kfree(instance->cmd_list[i]);
4307
4308        /* Free the cmd_list buffer itself */
4309        kfree(instance->cmd_list);
4310        instance->cmd_list = NULL;
4311
4312        INIT_LIST_HEAD(&instance->cmd_pool);
4313}
4314
4315/**
4316 * megasas_alloc_cmds - Allocates the command packets
4317 * @instance:           Adapter soft state
4318 *
4319 * Each command that is issued to the FW, whether IO commands from the OS or
4320 * internal commands like IOCTLs, are wrapped in local data structure called
4321 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
4322 * the FW.
4323 *
4324 * Each frame has a 32-bit field called context (tag). This context is used
4325 * to get back the megasas_cmd from the frame when a frame gets completed in
4326 * the ISR. Typically the address of the megasas_cmd itself would be used as
4327 * the context. But we wanted to keep the differences between 32 and 64 bit
4328 * systems to the mininum. We always use 32 bit integers for the context. In
4329 * this driver, the 32 bit values are the indices into an array cmd_list.
4330 * This array is used only to look up the megasas_cmd given the context. The
4331 * free commands themselves are maintained in a linked list called cmd_pool.
4332 */
4333int megasas_alloc_cmds(struct megasas_instance *instance)
4334{
4335        int i;
4336        int j;
4337        u16 max_cmd;
4338        struct megasas_cmd *cmd;
4339
4340        max_cmd = instance->max_mfi_cmds;
4341
4342        /*
4343         * instance->cmd_list is an array of struct megasas_cmd pointers.
4344         * Allocate the dynamic array first and then allocate individual
4345         * commands.
4346         */
4347        instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
4348
4349        if (!instance->cmd_list) {
4350                dev_printk(KERN_DEBUG, &instance->pdev->dev, "out of memory\n");
4351                return -ENOMEM;
4352        }
4353
4354        memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd);
4355
4356        for (i = 0; i < max_cmd; i++) {
4357                instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
4358                                                GFP_KERNEL);
4359
4360                if (!instance->cmd_list[i]) {
4361
4362                        for (j = 0; j < i; j++)
4363                                kfree(instance->cmd_list[j]);
4364
4365                        kfree(instance->cmd_list);
4366                        instance->cmd_list = NULL;
4367
4368                        return -ENOMEM;
4369                }
4370        }
4371
4372        for (i = 0; i < max_cmd; i++) {
4373                cmd = instance->cmd_list[i];
4374                memset(cmd, 0, sizeof(struct megasas_cmd));
4375                cmd->index = i;
4376                cmd->scmd = NULL;
4377                cmd->instance = instance;
4378
4379                list_add_tail(&cmd->list, &instance->cmd_pool);
4380        }
4381
4382        /*
4383         * Create a frame pool and assign one frame to each cmd
4384         */
4385        if (megasas_create_frame_pool(instance)) {
4386                dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error creating frame DMA pool\n");
4387                megasas_free_cmds(instance);
4388                return -ENOMEM;
4389        }
4390
4391        return 0;
4392}
4393
4394/*
4395 * dcmd_timeout_ocr_possible -  Check if OCR is possible based on Driver/FW state.
4396 * @instance:                           Adapter soft state
4397 *
4398 * Return 0 for only Fusion adapter, if driver load/unload is not in progress
4399 * or FW is not under OCR.
4400 */
4401inline int
4402dcmd_timeout_ocr_possible(struct megasas_instance *instance) {
4403
4404        if (instance->adapter_type == MFI_SERIES)
4405                return KILL_ADAPTER;
4406        else if (instance->unload ||
4407                        test_bit(MEGASAS_FUSION_OCR_NOT_POSSIBLE,
4408                                 &instance->reset_flags))
4409                return IGNORE_TIMEOUT;
4410        else
4411                return INITIATE_OCR;
4412}
4413
4414static void
4415megasas_get_pd_info(struct megasas_instance *instance, struct scsi_device *sdev)
4416{
4417        int ret;
4418        struct megasas_cmd *cmd;
4419        struct megasas_dcmd_frame *dcmd;
4420
4421        struct MR_PRIV_DEVICE *mr_device_priv_data;
4422        u16 device_id = 0;
4423
4424        device_id = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + sdev->id;
4425        cmd = megasas_get_cmd(instance);
4426
4427        if (!cmd) {
4428                dev_err(&instance->pdev->dev, "Failed to get cmd %s\n", __func__);
4429                return;
4430        }
4431
4432        dcmd = &cmd->frame->dcmd;
4433
4434        memset(instance->pd_info, 0, sizeof(*instance->pd_info));
4435        memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4436
4437        dcmd->mbox.s[0] = cpu_to_le16(device_id);
4438        dcmd->cmd = MFI_CMD_DCMD;
4439        dcmd->cmd_status = 0xFF;
4440        dcmd->sge_count = 1;
4441        dcmd->flags = MFI_FRAME_DIR_READ;
4442        dcmd->timeout = 0;
4443        dcmd->pad_0 = 0;
4444        dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_PD_INFO));
4445        dcmd->opcode = cpu_to_le32(MR_DCMD_PD_GET_INFO);
4446
4447        megasas_set_dma_settings(instance, dcmd, instance->pd_info_h,
4448                                 sizeof(struct MR_PD_INFO));
4449
4450        if ((instance->adapter_type != MFI_SERIES) &&
4451            !instance->mask_interrupts)
4452                ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4453        else
4454                ret = megasas_issue_polled(instance, cmd);
4455
4456        switch (ret) {
4457        case DCMD_SUCCESS:
4458                mr_device_priv_data = sdev->hostdata;
4459                le16_to_cpus((u16 *)&instance->pd_info->state.ddf.pdType);
4460                mr_device_priv_data->interface_type =
4461                                instance->pd_info->state.ddf.pdType.intf;
4462                break;
4463
4464        case DCMD_TIMEOUT:
4465
4466                switch (dcmd_timeout_ocr_possible(instance)) {
4467                case INITIATE_OCR:
4468                        cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4469                        mutex_unlock(&instance->reset_mutex);
4470                        megasas_reset_fusion(instance->host,
4471                                MFI_IO_TIMEOUT_OCR);
4472                        mutex_lock(&instance->reset_mutex);
4473                        break;
4474                case KILL_ADAPTER:
4475                        megaraid_sas_kill_hba(instance);
4476                        break;
4477                case IGNORE_TIMEOUT:
4478                        dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4479                                __func__, __LINE__);
4480                        break;
4481                }
4482
4483                break;
4484        }
4485
4486        if (ret != DCMD_TIMEOUT)
4487                megasas_return_cmd(instance, cmd);
4488
4489        return;
4490}
4491/*
4492 * megasas_get_pd_list_info -   Returns FW's pd_list structure
4493 * @instance:                           Adapter soft state
4494 * @pd_list:                            pd_list structure
4495 *
4496 * Issues an internal command (DCMD) to get the FW's controller PD
4497 * list structure.  This information is mainly used to find out SYSTEM
4498 * supported by the FW.
4499 */
4500static int
4501megasas_get_pd_list(struct megasas_instance *instance)
4502{
4503        int ret = 0, pd_index = 0;
4504        struct megasas_cmd *cmd;
4505        struct megasas_dcmd_frame *dcmd;
4506        struct MR_PD_LIST *ci;
4507        struct MR_PD_ADDRESS *pd_addr;
4508
4509        if (instance->pd_list_not_supported) {
4510                dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4511                "not supported by firmware\n");
4512                return ret;
4513        }
4514
4515        ci = instance->pd_list_buf;
4516
4517        cmd = megasas_get_cmd(instance);
4518
4519        if (!cmd) {
4520                dev_printk(KERN_DEBUG, &instance->pdev->dev, "(get_pd_list): Failed to get cmd\n");
4521                return -ENOMEM;
4522        }
4523
4524        dcmd = &cmd->frame->dcmd;
4525
4526        memset(ci, 0, sizeof(*ci));
4527        memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4528
4529        dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
4530        dcmd->mbox.b[1] = 0;
4531        dcmd->cmd = MFI_CMD_DCMD;
4532        dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4533        dcmd->sge_count = 1;
4534        dcmd->flags = MFI_FRAME_DIR_READ;
4535        dcmd->timeout = 0;
4536        dcmd->pad_0 = 0;
4537        dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
4538        dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY);
4539
4540        megasas_set_dma_settings(instance, dcmd, instance->pd_list_buf_h,
4541                                 (MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST)));
4542
4543        if ((instance->adapter_type != MFI_SERIES) &&
4544            !instance->mask_interrupts)
4545                ret = megasas_issue_blocked_cmd(instance, cmd,
4546                        MFI_IO_TIMEOUT_SECS);
4547        else
4548                ret = megasas_issue_polled(instance, cmd);
4549
4550        switch (ret) {
4551        case DCMD_FAILED:
4552                dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4553                        "failed/not supported by firmware\n");
4554
4555                if (instance->adapter_type != MFI_SERIES)
4556                        megaraid_sas_kill_hba(instance);
4557                else
4558                        instance->pd_list_not_supported = 1;
4559                break;
4560        case DCMD_TIMEOUT:
4561
4562                switch (dcmd_timeout_ocr_possible(instance)) {
4563                case INITIATE_OCR:
4564                        cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4565                        /*
4566                         * DCMD failed from AEN path.
4567                         * AEN path already hold reset_mutex to avoid PCI access
4568                         * while OCR is in progress.
4569                         */
4570                        mutex_unlock(&instance->reset_mutex);
4571                        megasas_reset_fusion(instance->host,
4572                                                MFI_IO_TIMEOUT_OCR);
4573                        mutex_lock(&instance->reset_mutex);
4574                        break;
4575                case KILL_ADAPTER:
4576                        megaraid_sas_kill_hba(instance);
4577                        break;
4578                case IGNORE_TIMEOUT:
4579                        dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d \n",
4580                                __func__, __LINE__);
4581                        break;
4582                }
4583
4584                break;
4585
4586        case DCMD_SUCCESS:
4587                pd_addr = ci->addr;
4588                if (megasas_dbg_lvl & LD_PD_DEBUG)
4589                        dev_info(&instance->pdev->dev, "%s, sysPD count: 0x%x\n",
4590                                 __func__, le32_to_cpu(ci->count));
4591
4592                if ((le32_to_cpu(ci->count) >
4593                        (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL)))
4594                        break;
4595
4596                memset(instance->local_pd_list, 0,
4597                                MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
4598
4599                for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) {
4600                        instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid     =
4601                                        le16_to_cpu(pd_addr->deviceId);
4602                        instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType       =
4603                                        pd_addr->scsiDevType;
4604                        instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState      =
4605                                        MR_PD_STATE_SYSTEM;
4606                        if (megasas_dbg_lvl & LD_PD_DEBUG)
4607                                dev_info(&instance->pdev->dev,
4608                                         "PD%d: targetID: 0x%03x deviceType:0x%x\n",
4609                                         pd_index, le16_to_cpu(pd_addr->deviceId),
4610                                         pd_addr->scsiDevType);
4611                        pd_addr++;
4612                }
4613
4614                memcpy(instance->pd_list, instance->local_pd_list,
4615                        sizeof(instance->pd_list));
4616                break;
4617
4618        }
4619
4620        if (ret != DCMD_TIMEOUT)
4621                megasas_return_cmd(instance, cmd);
4622
4623        return ret;
4624}
4625
4626/*
4627 * megasas_get_ld_list_info -   Returns FW's ld_list structure
4628 * @instance:                           Adapter soft state
4629 * @ld_list:                            ld_list structure
4630 *
4631 * Issues an internal command (DCMD) to get the FW's controller PD
4632 * list structure.  This information is mainly used to find out SYSTEM
4633 * supported by the FW.
4634 */
4635static int
4636megasas_get_ld_list(struct megasas_instance *instance)
4637{
4638        int ret = 0, ld_index = 0, ids = 0;
4639        struct megasas_cmd *cmd;
4640        struct megasas_dcmd_frame *dcmd;
4641        struct MR_LD_LIST *ci;
4642        dma_addr_t ci_h = 0;
4643        u32 ld_count;
4644
4645        ci = instance->ld_list_buf;
4646        ci_h = instance->ld_list_buf_h;
4647
4648        cmd = megasas_get_cmd(instance);
4649
4650        if (!cmd) {
4651                dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_list: Failed to get cmd\n");
4652                return -ENOMEM;
4653        }
4654
4655        dcmd = &cmd->frame->dcmd;
4656
4657        memset(ci, 0, sizeof(*ci));
4658        memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4659
4660        if (instance->supportmax256vd)
4661                dcmd->mbox.b[0] = 1;
4662        dcmd->cmd = MFI_CMD_DCMD;
4663        dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4664        dcmd->sge_count = 1;
4665        dcmd->flags = MFI_FRAME_DIR_READ;
4666        dcmd->timeout = 0;
4667        dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST));
4668        dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST);
4669        dcmd->pad_0  = 0;
4670
4671        megasas_set_dma_settings(instance, dcmd, ci_h,
4672                                 sizeof(struct MR_LD_LIST));
4673
4674        if ((instance->adapter_type != MFI_SERIES) &&
4675            !instance->mask_interrupts)
4676                ret = megasas_issue_blocked_cmd(instance, cmd,
4677                        MFI_IO_TIMEOUT_SECS);
4678        else
4679                ret = megasas_issue_polled(instance, cmd);
4680
4681        ld_count = le32_to_cpu(ci->ldCount);
4682
4683        switch (ret) {
4684        case DCMD_FAILED:
4685                megaraid_sas_kill_hba(instance);
4686                break;
4687        case DCMD_TIMEOUT:
4688
4689                switch (dcmd_timeout_ocr_possible(instance)) {
4690                case INITIATE_OCR:
4691                        cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4692                        /*
4693                         * DCMD failed from AEN path.
4694                         * AEN path already hold reset_mutex to avoid PCI access
4695                         * while OCR is in progress.
4696                         */
4697                        mutex_unlock(&instance->reset_mutex);
4698                        megasas_reset_fusion(instance->host,
4699                                                MFI_IO_TIMEOUT_OCR);
4700                        mutex_lock(&instance->reset_mutex);
4701                        break;
4702                case KILL_ADAPTER:
4703                        megaraid_sas_kill_hba(instance);
4704                        break;
4705                case IGNORE_TIMEOUT:
4706                        dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4707                                __func__, __LINE__);
4708                        break;
4709                }
4710
4711                break;
4712
4713        case DCMD_SUCCESS:
4714                if (megasas_dbg_lvl & LD_PD_DEBUG)
4715                        dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n",
4716                                 __func__, ld_count);
4717
4718                if (ld_count > instance->fw_supported_vd_count)
4719                        break;
4720
4721                memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
4722
4723                for (ld_index = 0; ld_index < ld_count; ld_index++) {
4724                        if (ci->ldList[ld_index].state != 0) {
4725                                ids = ci->ldList[ld_index].ref.targetId;
4726                                instance->ld_ids[ids] = ci->ldList[ld_index].ref.targetId;
4727                                if (megasas_dbg_lvl & LD_PD_DEBUG)
4728                                        dev_info(&instance->pdev->dev,
4729                                                 "LD%d: targetID: 0x%03x\n",
4730                                                 ld_index, ids);
4731                        }
4732                }
4733
4734                break;
4735        }
4736
4737        if (ret != DCMD_TIMEOUT)
4738                megasas_return_cmd(instance, cmd);
4739
4740        return ret;
4741}
4742
4743/**
4744 * megasas_ld_list_query -      Returns FW's ld_list structure
4745 * @instance:                           Adapter soft state
4746 * @ld_list:                            ld_list structure
4747 *
4748 * Issues an internal command (DCMD) to get the FW's controller PD
4749 * list structure.  This information is mainly used to find out SYSTEM
4750 * supported by the FW.
4751 */
4752static int
4753megasas_ld_list_query(struct megasas_instance *instance, u8 query_type)
4754{
4755        int ret = 0, ld_index = 0, ids = 0;
4756        struct megasas_cmd *cmd;
4757        struct megasas_dcmd_frame *dcmd;
4758        struct MR_LD_TARGETID_LIST *ci;
4759        dma_addr_t ci_h = 0;
4760        u32 tgtid_count;
4761
4762        ci = instance->ld_targetid_list_buf;
4763        ci_h = instance->ld_targetid_list_buf_h;
4764
4765        cmd = megasas_get_cmd(instance);
4766
4767        if (!cmd) {
4768                dev_warn(&instance->pdev->dev,
4769                         "megasas_ld_list_query: Failed to get cmd\n");
4770                return -ENOMEM;
4771        }
4772
4773        dcmd = &cmd->frame->dcmd;
4774
4775        memset(ci, 0, sizeof(*ci));
4776        memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4777
4778        dcmd->mbox.b[0] = query_type;
4779        if (instance->supportmax256vd)
4780                dcmd->mbox.b[2] = 1;
4781
4782        dcmd->cmd = MFI_CMD_DCMD;
4783        dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4784        dcmd->sge_count = 1;
4785        dcmd->flags = MFI_FRAME_DIR_READ;
4786        dcmd->timeout = 0;
4787        dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
4788        dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY);
4789        dcmd->pad_0  = 0;
4790
4791        megasas_set_dma_settings(instance, dcmd, ci_h,
4792                                 sizeof(struct MR_LD_TARGETID_LIST));
4793
4794        if ((instance->adapter_type != MFI_SERIES) &&
4795            !instance->mask_interrupts)
4796                ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4797        else
4798                ret = megasas_issue_polled(instance, cmd);
4799
4800        switch (ret) {
4801        case DCMD_FAILED:
4802                dev_info(&instance->pdev->dev,
4803                        "DCMD not supported by firmware - %s %d\n",
4804                                __func__, __LINE__);
4805                ret = megasas_get_ld_list(instance);
4806                break;
4807        case DCMD_TIMEOUT:
4808                switch (dcmd_timeout_ocr_possible(instance)) {
4809                case INITIATE_OCR:
4810                        cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4811                        /*
4812                         * DCMD failed from AEN path.
4813                         * AEN path already hold reset_mutex to avoid PCI access
4814                         * while OCR is in progress.
4815                         */
4816                        mutex_unlock(&instance->reset_mutex);
4817                        megasas_reset_fusion(instance->host,
4818                                                MFI_IO_TIMEOUT_OCR);
4819                        mutex_lock(&instance->reset_mutex);
4820                        break;
4821                case KILL_ADAPTER:
4822                        megaraid_sas_kill_hba(instance);
4823                        break;
4824                case IGNORE_TIMEOUT:
4825                        dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4826                                __func__, __LINE__);
4827                        break;
4828                }
4829
4830                break;
4831        case DCMD_SUCCESS:
4832                tgtid_count = le32_to_cpu(ci->count);
4833
4834                if (megasas_dbg_lvl & LD_PD_DEBUG)
4835                        dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n",
4836                                 __func__, tgtid_count);
4837
4838                if ((tgtid_count > (instance->fw_supported_vd_count)))
4839                        break;
4840
4841                memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
4842                for (ld_index = 0; ld_index < tgtid_count; ld_index++) {
4843                        ids = ci->targetId[ld_index];
4844                        instance->ld_ids[ids] = ci->targetId[ld_index];
4845                        if (megasas_dbg_lvl & LD_PD_DEBUG)
4846                                dev_info(&instance->pdev->dev, "LD%d: targetID: 0x%03x\n",
4847                                         ld_index, ci->targetId[ld_index]);
4848                }
4849
4850                break;
4851        }
4852
4853        if (ret != DCMD_TIMEOUT)
4854                megasas_return_cmd(instance, cmd);
4855
4856        return ret;
4857}
4858
4859/**
4860 * dcmd.opcode            - MR_DCMD_CTRL_DEVICE_LIST_GET
4861 * dcmd.mbox              - reserved
4862 * dcmd.sge IN            - ptr to return MR_HOST_DEVICE_LIST structure
4863 * Desc:    This DCMD will return the combined device list
4864 * Status:  MFI_STAT_OK - List returned successfully
4865 *          MFI_STAT_INVALID_CMD - Firmware support for the feature has been
4866 *                                 disabled
4867 * @instance:                   Adapter soft state
4868 * @is_probe:                   Driver probe check
4869 * Return:                      0 if DCMD succeeded
4870 *                               non-zero if failed
4871 */
4872static int
4873megasas_host_device_list_query(struct megasas_instance *instance,
4874                               bool is_probe)
4875{
4876        int ret, i, target_id;
4877        struct megasas_cmd *cmd;
4878        struct megasas_dcmd_frame *dcmd;
4879        struct MR_HOST_DEVICE_LIST *ci;
4880        u32 count;
4881        dma_addr_t ci_h;
4882
4883        ci = instance->host_device_list_buf;
4884        ci_h = instance->host_device_list_buf_h;
4885
4886        cmd = megasas_get_cmd(instance);
4887
4888        if (!cmd) {
4889                dev_warn(&instance->pdev->dev,
4890                         "%s: failed to get cmd\n",
4891                         __func__);
4892                return -ENOMEM;
4893        }
4894
4895        dcmd = &cmd->frame->dcmd;
4896
4897        memset(ci, 0, sizeof(*ci));
4898        memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4899
4900        dcmd->mbox.b[0] = is_probe ? 0 : 1;
4901        dcmd->cmd = MFI_CMD_DCMD;
4902        dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4903        dcmd->sge_count = 1;
4904        dcmd->flags = MFI_FRAME_DIR_READ;
4905        dcmd->timeout = 0;
4906        dcmd->pad_0 = 0;
4907        dcmd->data_xfer_len = cpu_to_le32(HOST_DEVICE_LIST_SZ);
4908        dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_DEVICE_LIST_GET);
4909
4910        megasas_set_dma_settings(instance, dcmd, ci_h, HOST_DEVICE_LIST_SZ);
4911
4912        if (!instance->mask_interrupts) {
4913                ret = megasas_issue_blocked_cmd(instance, cmd,
4914                                                MFI_IO_TIMEOUT_SECS);
4915        } else {
4916                ret = megasas_issue_polled(instance, cmd);
4917                cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4918        }
4919
4920        switch (ret) {
4921        case DCMD_SUCCESS:
4922                /* Fill the internal pd_list and ld_ids array based on
4923                 * targetIds returned by FW
4924                 */
4925                count = le32_to_cpu(ci->count);
4926
4927                if (count > (MEGASAS_MAX_PD + MAX_LOGICAL_DRIVES_EXT))
4928                        break;
4929
4930                if (megasas_dbg_lvl & LD_PD_DEBUG)
4931                        dev_info(&instance->pdev->dev, "%s, Device count: 0x%x\n",
4932                                 __func__, count);
4933
4934                memset(instance->local_pd_list, 0,
4935                       MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
4936                memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
4937                for (i = 0; i < count; i++) {
4938                        target_id = le16_to_cpu(ci->host_device_list[i].target_id);
4939                        if (ci->host_device_list[i].flags.u.bits.is_sys_pd) {
4940                                instance->local_pd_list[target_id].tid = target_id;
4941                                instance->local_pd_list[target_id].driveType =
4942                                                ci->host_device_list[i].scsi_type;
4943                                instance->local_pd_list[target_id].driveState =
4944                                                MR_PD_STATE_SYSTEM;
4945                                if (megasas_dbg_lvl & LD_PD_DEBUG)
4946                                        dev_info(&instance->pdev->dev,
4947                                                 "Device %d: PD targetID: 0x%03x deviceType:0x%x\n",
4948                                                 i, target_id, ci->host_device_list[i].scsi_type);
4949                        } else {
4950                                instance->ld_ids[target_id] = target_id;
4951                                if (megasas_dbg_lvl & LD_PD_DEBUG)
4952                                        dev_info(&instance->pdev->dev,
4953                                                 "Device %d: LD targetID: 0x%03x\n",
4954                                                 i, target_id);
4955                        }
4956                }
4957
4958                memcpy(instance->pd_list, instance->local_pd_list,
4959                       sizeof(instance->pd_list));
4960                break;
4961
4962        case DCMD_TIMEOUT:
4963                switch (dcmd_timeout_ocr_possible(instance)) {
4964                case INITIATE_OCR:
4965                        cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4966                        mutex_unlock(&instance->reset_mutex);
4967                        megasas_reset_fusion(instance->host,
4968                                MFI_IO_TIMEOUT_OCR);
4969                        mutex_lock(&instance->reset_mutex);
4970                        break;
4971                case KILL_ADAPTER:
4972                        megaraid_sas_kill_hba(instance);
4973                        break;
4974                case IGNORE_TIMEOUT:
4975                        dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4976                                 __func__, __LINE__);
4977                        break;
4978                }
4979                break;
4980        case DCMD_FAILED:
4981                dev_err(&instance->pdev->dev,
4982                        "%s: MR_DCMD_CTRL_DEVICE_LIST_GET failed\n",
4983                        __func__);
4984                break;
4985        }
4986
4987        if (ret != DCMD_TIMEOUT)
4988                megasas_return_cmd(instance, cmd);
4989
4990        return ret;
4991}
4992
4993/*
4994 * megasas_update_ext_vd_details : Update details w.r.t Extended VD
4995 * instance                      : Controller's instance
4996*/
4997static void megasas_update_ext_vd_details(struct megasas_instance *instance)
4998{
4999        struct fusion_context *fusion;
5000        u32 ventura_map_sz = 0;
5001
5002        fusion = instance->ctrl_context;
5003        /* For MFI based controllers return dummy success */
5004        if (!fusion)
5005                return;
5006
5007        instance->supportmax256vd =
5008                instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs;
5009        /* Below is additional check to address future FW enhancement */
5010        if (instance->ctrl_info_buf->max_lds > 64)
5011                instance->supportmax256vd = 1;
5012
5013        instance->drv_supported_vd_count = MEGASAS_MAX_LD_CHANNELS
5014                                        * MEGASAS_MAX_DEV_PER_CHANNEL;
5015        instance->drv_supported_pd_count = MEGASAS_MAX_PD_CHANNELS
5016                                        * MEGASAS_MAX_DEV_PER_CHANNEL;
5017        if (instance->supportmax256vd) {
5018                instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES_EXT;
5019                instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
5020        } else {
5021                instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
5022                instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
5023        }
5024
5025        dev_info(&instance->pdev->dev,
5026                "FW provided supportMaxExtLDs: %d\tmax_lds: %d\n",
5027                instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs ? 1 : 0,
5028                instance->ctrl_info_buf->max_lds);
5029
5030        if (instance->max_raid_mapsize) {
5031                ventura_map_sz = instance->max_raid_mapsize *
5032                                                MR_MIN_MAP_SIZE; /* 64k */
5033                fusion->current_map_sz = ventura_map_sz;
5034                fusion->max_map_sz = ventura_map_sz;
5035        } else {
5036                fusion->old_map_sz =  sizeof(struct MR_FW_RAID_MAP) +
5037                                        (sizeof(struct MR_LD_SPAN_MAP) *
5038                                        (instance->fw_supported_vd_count - 1));
5039                fusion->new_map_sz =  sizeof(struct MR_FW_RAID_MAP_EXT);
5040
5041                fusion->max_map_sz =
5042                        max(fusion->old_map_sz, fusion->new_map_sz);
5043
5044                if (instance->supportmax256vd)
5045                        fusion->current_map_sz = fusion->new_map_sz;
5046                else
5047                        fusion->current_map_sz = fusion->old_map_sz;
5048        }
5049        /* irrespective of FW raid maps, driver raid map is constant */
5050        fusion->drv_map_sz = sizeof(struct MR_DRV_RAID_MAP_ALL);
5051}
5052
5053/*
5054 * dcmd.opcode                - MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES
5055 * dcmd.hdr.length            - number of bytes to read
5056 * dcmd.sge                   - Ptr to MR_SNAPDUMP_PROPERTIES
5057 * Desc:                         Fill in snapdump properties
5058 * Status:                       MFI_STAT_OK- Command successful
5059 */
5060void megasas_get_snapdump_properties(struct megasas_instance *instance)
5061{
5062        int ret = 0;
5063        struct megasas_cmd *cmd;
5064        struct megasas_dcmd_frame *dcmd;
5065        struct MR_SNAPDUMP_PROPERTIES *ci;
5066        dma_addr_t ci_h = 0;
5067
5068        ci = instance->snapdump_prop;
5069        ci_h = instance->snapdump_prop_h;
5070
5071        if (!ci)
5072                return;
5073
5074        cmd = megasas_get_cmd(instance);
5075
5076        if (!cmd) {
5077                dev_dbg(&instance->pdev->dev, "Failed to get a free cmd\n");
5078                return;
5079        }
5080
5081        dcmd = &cmd->frame->dcmd;
5082
5083        memset(ci, 0, sizeof(*ci));
5084        memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5085
5086        dcmd->cmd = MFI_CMD_DCMD;
5087        dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5088        dcmd->sge_count = 1;
5089        dcmd->flags = MFI_FRAME_DIR_READ;
5090        dcmd->timeout = 0;
5091        dcmd->pad_0 = 0;
5092        dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_SNAPDUMP_PROPERTIES));
5093        dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES);
5094
5095        megasas_set_dma_settings(instance, dcmd, ci_h,
5096                                 sizeof(struct MR_SNAPDUMP_PROPERTIES));
5097
5098        if (!instance->mask_interrupts) {
5099                ret = megasas_issue_blocked_cmd(instance, cmd,
5100                                                MFI_IO_TIMEOUT_SECS);
5101        } else {
5102                ret = megasas_issue_polled(instance, cmd);
5103                cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5104        }
5105
5106        switch (ret) {
5107        case DCMD_SUCCESS:
5108                instance->snapdump_wait_time =
5109                        min_t(u8, ci->trigger_min_num_sec_before_ocr,
5110                                MEGASAS_MAX_SNAP_DUMP_WAIT_TIME);
5111                break;
5112
5113        case DCMD_TIMEOUT:
5114                switch (dcmd_timeout_ocr_possible(instance)) {
5115                case INITIATE_OCR:
5116                        cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5117                        mutex_unlock(&instance->reset_mutex);
5118                        megasas_reset_fusion(instance->host,
5119                                MFI_IO_TIMEOUT_OCR);
5120                        mutex_lock(&instance->reset_mutex);
5121                        break;
5122                case KILL_ADAPTER:
5123                        megaraid_sas_kill_hba(instance);
5124                        break;
5125                case IGNORE_TIMEOUT:
5126                        dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5127                                __func__, __LINE__);
5128                        break;
5129                }
5130        }
5131
5132        if (ret != DCMD_TIMEOUT)
5133                megasas_return_cmd(instance, cmd);
5134}
5135
5136/**
5137 * megasas_get_controller_info -        Returns FW's controller structure
5138 * @instance:                           Adapter soft state
5139 *
5140 * Issues an internal command (DCMD) to get the FW's controller structure.
5141 * This information is mainly used to find out the maximum IO transfer per
5142 * command supported by the FW.
5143 */
5144int
5145megasas_get_ctrl_info(struct megasas_instance *instance)
5146{
5147        int ret = 0;
5148        struct megasas_cmd *cmd;
5149        struct megasas_dcmd_frame *dcmd;
5150        struct megasas_ctrl_info *ci;
5151        dma_addr_t ci_h = 0;
5152
5153        ci = instance->ctrl_info_buf;
5154        ci_h = instance->ctrl_info_buf_h;
5155
5156        cmd = megasas_get_cmd(instance);
5157
5158        if (!cmd) {
5159                dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a free cmd\n");
5160                return -ENOMEM;
5161        }
5162
5163        dcmd = &cmd->frame->dcmd;
5164
5165        memset(ci, 0, sizeof(*ci));
5166        memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5167
5168        dcmd->cmd = MFI_CMD_DCMD;
5169        dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5170        dcmd->sge_count = 1;
5171        dcmd->flags = MFI_FRAME_DIR_READ;
5172        dcmd->timeout = 0;
5173        dcmd->pad_0 = 0;
5174        dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info));
5175        dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO);
5176        dcmd->mbox.b[0] = 1;
5177
5178        megasas_set_dma_settings(instance, dcmd, ci_h,
5179                                 sizeof(struct megasas_ctrl_info));
5180
5181        if ((instance->adapter_type != MFI_SERIES) &&
5182            !instance->mask_interrupts) {
5183                ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
5184        } else {
5185                ret = megasas_issue_polled(instance, cmd);
5186                cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5187        }
5188
5189        switch (ret) {
5190        case DCMD_SUCCESS:
5191                /* Save required controller information in
5192                 * CPU endianness format.
5193                 */
5194                le32_to_cpus((u32 *)&ci->properties.OnOffProperties);
5195                le16_to_cpus((u16 *)&ci->properties.on_off_properties2);
5196                le32_to_cpus((u32 *)&ci->adapterOperations2);
5197                le32_to_cpus((u32 *)&ci->adapterOperations3);
5198                le16_to_cpus((u16 *)&ci->adapter_operations4);
5199                le32_to_cpus((u32 *)&ci->adapter_operations5);
5200
5201                /* Update the latest Ext VD info.
5202                 * From Init path, store current firmware details.
5203                 * From OCR path, detect any firmware properties changes.
5204                 * in case of Firmware upgrade without system reboot.
5205                 */
5206                megasas_update_ext_vd_details(instance);
5207                instance->support_seqnum_jbod_fp =
5208                        ci->adapterOperations3.useSeqNumJbodFP;
5209                instance->support_morethan256jbod =
5210                        ci->adapter_operations4.support_pd_map_target_id;
5211                instance->support_nvme_passthru =
5212                        ci->adapter_operations4.support_nvme_passthru;
5213                instance->support_pci_lane_margining =
5214                        ci->adapter_operations5.support_pci_lane_margining;
5215                instance->task_abort_tmo = ci->TaskAbortTO;
5216                instance->max_reset_tmo = ci->MaxResetTO;
5217
5218                /*Check whether controller is iMR or MR */
5219                instance->is_imr = (ci->memory_size ? 0 : 1);
5220
5221                instance->snapdump_wait_time =
5222                        (ci->properties.on_off_properties2.enable_snap_dump ?
5223                         MEGASAS_DEFAULT_SNAP_DUMP_WAIT_TIME : 0);
5224
5225                instance->enable_fw_dev_list =
5226                        ci->properties.on_off_properties2.enable_fw_dev_list;
5227
5228                dev_info(&instance->pdev->dev,
5229                        "controller type\t: %s(%dMB)\n",
5230                        instance->is_imr ? "iMR" : "MR",
5231                        le16_to_cpu(ci->memory_size));
5232
5233                instance->disableOnlineCtrlReset =
5234                        ci->properties.OnOffProperties.disableOnlineCtrlReset;
5235                instance->secure_jbod_support =
5236                        ci->adapterOperations3.supportSecurityonJBOD;
5237                dev_info(&instance->pdev->dev, "Online Controller Reset(OCR)\t: %s\n",
5238                        instance->disableOnlineCtrlReset ? "Disabled" : "Enabled");
5239                dev_info(&instance->pdev->dev, "Secure JBOD support\t: %s\n",
5240                        instance->secure_jbod_support ? "Yes" : "No");
5241                dev_info(&instance->pdev->dev, "NVMe passthru support\t: %s\n",
5242                         instance->support_nvme_passthru ? "Yes" : "No");
5243                dev_info(&instance->pdev->dev,
5244                         "FW provided TM TaskAbort/Reset timeout\t: %d secs/%d secs\n",
5245                         instance->task_abort_tmo, instance->max_reset_tmo);
5246                dev_info(&instance->pdev->dev, "JBOD sequence map support\t: %s\n",
5247                         instance->support_seqnum_jbod_fp ? "Yes" : "No");
5248                dev_info(&instance->pdev->dev, "PCI Lane Margining support\t: %s\n",
5249                         instance->support_pci_lane_margining ? "Yes" : "No");
5250
5251                break;
5252
5253        case DCMD_TIMEOUT:
5254                switch (dcmd_timeout_ocr_possible(instance)) {
5255                case INITIATE_OCR:
5256                        cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5257                        mutex_unlock(&instance->reset_mutex);
5258                        megasas_reset_fusion(instance->host,
5259                                MFI_IO_TIMEOUT_OCR);
5260                        mutex_lock(&instance->reset_mutex);
5261                        break;
5262                case KILL_ADAPTER:
5263                        megaraid_sas_kill_hba(instance);
5264                        break;
5265                case IGNORE_TIMEOUT:
5266                        dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5267                                __func__, __LINE__);
5268                        break;
5269                }
5270                break;
5271        case DCMD_FAILED:
5272                megaraid_sas_kill_hba(instance);
5273                break;
5274
5275        }
5276
5277        if (ret != DCMD_TIMEOUT)
5278                megasas_return_cmd(instance, cmd);
5279
5280        return ret;
5281}
5282
5283/*
5284 * megasas_set_crash_dump_params -      Sends address of crash dump DMA buffer
5285 *                                      to firmware
5286 *
5287 * @instance:                           Adapter soft state
5288 * @crash_buf_state             -       tell FW to turn ON/OFF crash dump feature
5289                                        MR_CRASH_BUF_TURN_OFF = 0
5290                                        MR_CRASH_BUF_TURN_ON = 1
5291 * @return 0 on success non-zero on failure.
5292 * Issues an internal command (DCMD) to set parameters for crash dump feature.
5293 * Driver will send address of crash dump DMA buffer and set mbox to tell FW
5294 * that driver supports crash dump feature. This DCMD will be sent only if
5295 * crash dump feature is supported by the FW.
5296 *
5297 */
5298int megasas_set_crash_dump_params(struct megasas_instance *instance,
5299        u8 crash_buf_state)
5300{
5301        int ret = 0;
5302        struct megasas_cmd *cmd;
5303        struct megasas_dcmd_frame *dcmd;
5304
5305        cmd = megasas_get_cmd(instance);
5306
5307        if (!cmd) {
5308                dev_err(&instance->pdev->dev, "Failed to get a free cmd\n");
5309                return -ENOMEM;
5310        }
5311
5312
5313        dcmd = &cmd->frame->dcmd;
5314
5315        memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5316        dcmd->mbox.b[0] = crash_buf_state;
5317        dcmd->cmd = MFI_CMD_DCMD;
5318        dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5319        dcmd->sge_count = 1;
5320        dcmd->flags = MFI_FRAME_DIR_NONE;
5321        dcmd->timeout = 0;
5322        dcmd->pad_0 = 0;
5323        dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE);
5324        dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS);
5325
5326        megasas_set_dma_settings(instance, dcmd, instance->crash_dump_h,
5327                                 CRASH_DMA_BUF_SIZE);
5328
5329        if ((instance->adapter_type != MFI_SERIES) &&
5330            !instance->mask_interrupts)
5331                ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
5332        else
5333                ret = megasas_issue_polled(instance, cmd);
5334
5335        if (ret == DCMD_TIMEOUT) {
5336                switch (dcmd_timeout_ocr_possible(instance)) {
5337                case INITIATE_OCR:
5338                        cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5339                        megasas_reset_fusion(instance->host,
5340                                        MFI_IO_TIMEOUT_OCR);
5341                        break;
5342                case KILL_ADAPTER:
5343                        megaraid_sas_kill_hba(instance);
5344                        break;
5345                case IGNORE_TIMEOUT:
5346                        dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5347                                __func__, __LINE__);
5348                        break;
5349                }
5350        } else
5351                megasas_return_cmd(instance, cmd);
5352
5353        return ret;
5354}
5355
5356/**
5357 * megasas_issue_init_mfi -     Initializes the FW
5358 * @instance:           Adapter soft state
5359 *
5360 * Issues the INIT MFI cmd
5361 */
5362static int
5363megasas_issue_init_mfi(struct megasas_instance *instance)
5364{
5365        __le32 context;
5366        struct megasas_cmd *cmd;
5367        struct megasas_init_frame *init_frame;
5368        struct megasas_init_queue_info *initq_info;
5369        dma_addr_t init_frame_h;
5370        dma_addr_t initq_info_h;
5371
5372        /*
5373         * Prepare a init frame. Note the init frame points to queue info
5374         * structure. Each frame has SGL allocated after first 64 bytes. For
5375         * this frame - since we don't need any SGL - we use SGL's space as
5376         * queue info structure
5377         *
5378         * We will not get a NULL command below. We just created the pool.
5379         */
5380        cmd = megasas_get_cmd(instance);
5381
5382        init_frame = (struct megasas_init_frame *)cmd->frame;
5383        initq_info = (struct megasas_init_queue_info *)
5384                ((unsigned long)init_frame + 64);
5385
5386        init_frame_h = cmd->frame_phys_addr;
5387        initq_info_h = init_frame_h + 64;
5388
5389        context = init_frame->context;
5390        memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
5391        memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
5392        init_frame->context = context;
5393
5394        initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1);
5395        initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h);
5396
5397        initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h);
5398        initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h);
5399
5400        init_frame->cmd = MFI_CMD_INIT;
5401        init_frame->cmd_status = MFI_STAT_INVALID_STATUS;
5402        init_frame->queue_info_new_phys_addr_lo =
5403                cpu_to_le32(lower_32_bits(initq_info_h));
5404        init_frame->queue_info_new_phys_addr_hi =
5405                cpu_to_le32(upper_32_bits(initq_info_h));
5406
5407        init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info));
5408
5409        /*
5410         * disable the intr before firing the init frame to FW
5411         */
5412        instance->instancet->disable_intr(instance);
5413
5414        /*
5415         * Issue the init frame in polled mode
5416         */
5417
5418        if (megasas_issue_polled(instance, cmd)) {
5419                dev_err(&instance->pdev->dev, "Failed to init firmware\n");
5420                megasas_return_cmd(instance, cmd);
5421                goto fail_fw_init;
5422        }
5423
5424        megasas_return_cmd(instance, cmd);
5425
5426        return 0;
5427
5428fail_fw_init:
5429        return -EINVAL;
5430}
5431
5432static u32
5433megasas_init_adapter_mfi(struct megasas_instance *instance)
5434{
5435        u32 context_sz;
5436        u32 reply_q_sz;
5437
5438        /*
5439         * Get various operational parameters from status register
5440         */
5441        instance->max_fw_cmds = instance->instancet->read_fw_status_reg(instance) & 0x00FFFF;
5442        /*
5443         * Reduce the max supported cmds by 1. This is to ensure that the
5444         * reply_q_sz (1 more than the max cmd that driver may send)
5445         * does not exceed max cmds that the FW can support
5446         */
5447        instance->max_fw_cmds = instance->max_fw_cmds-1;
5448        instance->max_mfi_cmds = instance->max_fw_cmds;
5449        instance->max_num_sge = (instance->instancet->read_fw_status_reg(instance) & 0xFF0000) >>
5450                                        0x10;
5451        /*
5452         * For MFI skinny adapters, MEGASAS_SKINNY_INT_CMDS commands
5453         * are reserved for IOCTL + driver's internal DCMDs.
5454         */
5455        if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
5456                (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
5457                instance->max_scsi_cmds = (instance->max_fw_cmds -
5458                        MEGASAS_SKINNY_INT_CMDS);
5459                sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
5460        } else {
5461                instance->max_scsi_cmds = (instance->max_fw_cmds -
5462                        MEGASAS_INT_CMDS);
5463                sema_init(&instance->ioctl_sem, (MEGASAS_MFI_IOCTL_CMDS));
5464        }
5465
5466        instance->cur_can_queue = instance->max_scsi_cmds;
5467        /*
5468         * Create a pool of commands
5469         */
5470        if (megasas_alloc_cmds(instance))
5471                goto fail_alloc_cmds;
5472
5473        /*
5474         * Allocate memory for reply queue. Length of reply queue should
5475         * be _one_ more than the maximum commands handled by the firmware.
5476         *
5477         * Note: When FW completes commands, it places corresponding contex
5478         * values in this circular reply queue. This circular queue is a fairly
5479         * typical producer-consumer queue. FW is the producer (of completed
5480         * commands) and the driver is the consumer.
5481         */
5482        context_sz = sizeof(u32);
5483        reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
5484
5485        instance->reply_queue = dma_alloc_coherent(&instance->pdev->dev,
5486                        reply_q_sz, &instance->reply_queue_h, GFP_KERNEL);
5487
5488        if (!instance->reply_queue) {
5489                dev_printk(KERN_DEBUG, &instance->pdev->dev, "Out of DMA mem for reply queue\n");
5490                goto fail_reply_queue;
5491        }
5492
5493        if (megasas_issue_init_mfi(instance))
5494                goto fail_fw_init;
5495
5496        if (megasas_get_ctrl_info(instance)) {
5497                dev_err(&instance->pdev->dev, "(%d): Could get controller info "
5498                        "Fail from %s %d\n", instance->unique_id,
5499                        __func__, __LINE__);
5500                goto fail_fw_init;
5501        }
5502
5503        instance->fw_support_ieee = 0;
5504        instance->fw_support_ieee =
5505                (instance->instancet->read_fw_status_reg(instance) &
5506                0x04000000);
5507
5508        dev_notice(&instance->pdev->dev, "megasas_init_mfi: fw_support_ieee=%d",
5509                        instance->fw_support_ieee);
5510
5511        if (instance->fw_support_ieee)
5512                instance->flag_ieee = 1;
5513
5514        return 0;
5515
5516fail_fw_init:
5517
5518        dma_free_coherent(&instance->pdev->dev, reply_q_sz,
5519                            instance->reply_queue, instance->reply_queue_h);
5520fail_reply_queue:
5521        megasas_free_cmds(instance);
5522
5523fail_alloc_cmds:
5524        return 1;
5525}
5526
5527static
5528void megasas_setup_irq_poll(struct megasas_instance *instance)
5529{
5530        struct megasas_irq_context *irq_ctx;
5531        u32 count, i;
5532
5533        count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
5534
5535        /* Initialize IRQ poll */
5536        for (i = 0; i < count; i++) {
5537                irq_ctx = &instance->irq_context[i];
5538                irq_ctx->os_irq = pci_irq_vector(instance->pdev, i);
5539                irq_ctx->irq_poll_scheduled = false;
5540                irq_poll_init(&irq_ctx->irqpoll,
5541                              instance->threshold_reply_count,
5542                              megasas_irqpoll);
5543        }
5544}
5545
5546/*
5547 * megasas_setup_irqs_ioapic -          register legacy interrupts.
5548 * @instance:                           Adapter soft state
5549 *
5550 * Do not enable interrupt, only setup ISRs.
5551 *
5552 * Return 0 on success.
5553 */
5554static int
5555megasas_setup_irqs_ioapic(struct megasas_instance *instance)
5556{
5557        struct pci_dev *pdev;
5558
5559        pdev = instance->pdev;
5560        instance->irq_context[0].instance = instance;
5561        instance->irq_context[0].MSIxIndex = 0;
5562        snprintf(instance->irq_context->name, MEGASAS_MSIX_NAME_LEN, "%s%u",
5563                "megasas", instance->host->host_no);
5564        if (request_irq(pci_irq_vector(pdev, 0),
5565                        instance->instancet->service_isr, IRQF_SHARED,
5566                        instance->irq_context->name, &instance->irq_context[0])) {
5567                dev_err(&instance->pdev->dev,
5568                                "Failed to register IRQ from %s %d\n",
5569                                __func__, __LINE__);
5570                return -1;
5571        }
5572        instance->perf_mode = MR_LATENCY_PERF_MODE;
5573        instance->low_latency_index_start = 0;
5574        return 0;
5575}
5576
5577/**
5578 * megasas_setup_irqs_msix -            register MSI-x interrupts.
5579 * @instance:                           Adapter soft state
5580 * @is_probe:                           Driver probe check
5581 *
5582 * Do not enable interrupt, only setup ISRs.
5583 *
5584 * Return 0 on success.
5585 */
5586static int
5587megasas_setup_irqs_msix(struct megasas_instance *instance, u8 is_probe)
5588{
5589        int i, j;
5590        struct pci_dev *pdev;
5591
5592        pdev = instance->pdev;
5593
5594        /* Try MSI-x */
5595        for (i = 0; i < instance->msix_vectors; i++) {
5596                instance->irq_context[i].instance = instance;
5597                instance->irq_context[i].MSIxIndex = i;
5598                snprintf(instance->irq_context[i].name, MEGASAS_MSIX_NAME_LEN, "%s%u-msix%u",
5599                        "megasas", instance->host->host_no, i);
5600                if (request_irq(pci_irq_vector(pdev, i),
5601                        instance->instancet->service_isr, 0, instance->irq_context[i].name,
5602                        &instance->irq_context[i])) {
5603                        dev_err(&instance->pdev->dev,
5604                                "Failed to register IRQ for vector %d.\n", i);
5605                        for (j = 0; j < i; j++)
5606                                free_irq(pci_irq_vector(pdev, j),
5607                                         &instance->irq_context[j]);
5608                        /* Retry irq register for IO_APIC*/
5609                        instance->msix_vectors = 0;
5610                        instance->msix_load_balance = false;
5611                        if (is_probe) {
5612                                pci_free_irq_vectors(instance->pdev);
5613                                return megasas_setup_irqs_ioapic(instance);
5614                        } else {
5615                                return -1;
5616                        }
5617                }
5618        }
5619
5620        return 0;
5621}
5622
5623/*
5624 * megasas_destroy_irqs-                unregister interrupts.
5625 * @instance:                           Adapter soft state
5626 * return:                              void
5627 */
5628static void
5629megasas_destroy_irqs(struct megasas_instance *instance) {
5630
5631        int i;
5632        int count;
5633        struct megasas_irq_context *irq_ctx;
5634
5635        count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
5636        if (instance->adapter_type != MFI_SERIES) {
5637                for (i = 0; i < count; i++) {
5638                        irq_ctx = &instance->irq_context[i];
5639                        irq_poll_disable(&irq_ctx->irqpoll);
5640                }
5641        }
5642
5643        if (instance->msix_vectors)
5644                for (i = 0; i < instance->msix_vectors; i++) {
5645                        free_irq(pci_irq_vector(instance->pdev, i),
5646                                 &instance->irq_context[i]);
5647                }
5648        else
5649                free_irq(pci_irq_vector(instance->pdev, 0),
5650                         &instance->irq_context[0]);
5651}
5652
5653/**
5654 * megasas_setup_jbod_map -     setup jbod map for FP seq_number.
5655 * @instance:                           Adapter soft state
5656 * @is_probe:                           Driver probe check
5657 *
5658 * Return 0 on success.
5659 */
5660void
5661megasas_setup_jbod_map(struct megasas_instance *instance)
5662{
5663        int i;
5664        struct fusion_context *fusion = instance->ctrl_context;
5665        u32 pd_seq_map_sz;
5666
5667        pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
5668                (sizeof(struct MR_PD_CFG_SEQ) * (MAX_PHYSICAL_DEVICES - 1));
5669
5670        instance->use_seqnum_jbod_fp =
5671                instance->support_seqnum_jbod_fp;
5672        if (reset_devices || !fusion ||
5673                !instance->support_seqnum_jbod_fp) {
5674                dev_info(&instance->pdev->dev,
5675                        "JBOD sequence map is disabled %s %d\n",
5676                        __func__, __LINE__);
5677                instance->use_seqnum_jbod_fp = false;
5678                return;
5679        }
5680
5681        if (fusion->pd_seq_sync[0])
5682                goto skip_alloc;
5683
5684        for (i = 0; i < JBOD_MAPS_COUNT; i++) {
5685                fusion->pd_seq_sync[i] = dma_alloc_coherent
5686                        (&instance->pdev->dev, pd_seq_map_sz,
5687                        &fusion->pd_seq_phys[i], GFP_KERNEL);
5688                if (!fusion->pd_seq_sync[i]) {
5689                        dev_err(&instance->pdev->dev,
5690                                "Failed to allocate memory from %s %d\n",
5691                                __func__, __LINE__);
5692                        if (i == 1) {
5693                                dma_free_coherent(&instance->pdev->dev,
5694                                        pd_seq_map_sz, fusion->pd_seq_sync[0],
5695                                        fusion->pd_seq_phys[0]);
5696                                fusion->pd_seq_sync[0] = NULL;
5697                        }
5698                        instance->use_seqnum_jbod_fp = false;
5699                        return;
5700                }
5701        }
5702
5703skip_alloc:
5704        if (!megasas_sync_pd_seq_num(instance, false) &&
5705                !megasas_sync_pd_seq_num(instance, true))
5706                instance->use_seqnum_jbod_fp = true;
5707        else
5708                instance->use_seqnum_jbod_fp = false;
5709}
5710
5711static void megasas_setup_reply_map(struct megasas_instance *instance)
5712{
5713        const struct cpumask *mask;
5714        unsigned int queue, cpu, low_latency_index_start;
5715
5716        low_latency_index_start = instance->low_latency_index_start;
5717
5718        for (queue = low_latency_index_start; queue < instance->msix_vectors; queue++) {
5719                mask = pci_irq_get_affinity(instance->pdev, queue);
5720                if (!mask)
5721                        goto fallback;
5722
5723                for_each_cpu(cpu, mask)
5724                        instance->reply_map[cpu] = queue;
5725        }
5726        return;
5727
5728fallback:
5729        queue = low_latency_index_start;
5730        for_each_possible_cpu(cpu) {
5731                instance->reply_map[cpu] = queue;
5732                if (queue == (instance->msix_vectors - 1))
5733                        queue = low_latency_index_start;
5734                else
5735                        queue++;
5736        }
5737}
5738
5739/**
5740 * megasas_get_device_list -    Get the PD and LD device list from FW.
5741 * @instance:                   Adapter soft state
5742 * @return:                     Success or failure
5743 *
5744 * Issue DCMDs to Firmware to get the PD and LD list.
5745 * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination
5746 * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list.
5747 */
5748static
5749int megasas_get_device_list(struct megasas_instance *instance)
5750{
5751        memset(instance->pd_list, 0,
5752               (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)));
5753        memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
5754
5755        if (instance->enable_fw_dev_list) {
5756                if (megasas_host_device_list_query(instance, true))
5757                        return FAILED;
5758        } else {
5759                if (megasas_get_pd_list(instance) < 0) {
5760                        dev_err(&instance->pdev->dev, "failed to get PD list\n");
5761                        return FAILED;
5762                }
5763
5764                if (megasas_ld_list_query(instance,
5765                                          MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) {
5766                        dev_err(&instance->pdev->dev, "failed to get LD list\n");
5767                        return FAILED;
5768                }
5769        }
5770
5771        return SUCCESS;
5772}
5773
5774/**
5775 * megasas_set_high_iops_queue_affinity_hint -  Set affinity hint for high IOPS queues
5776 * @instance:                                   Adapter soft state
5777 * return:                                      void
5778 */
5779static inline void
5780megasas_set_high_iops_queue_affinity_hint(struct megasas_instance *instance)
5781{
5782        int i;
5783        int local_numa_node;
5784
5785        if (instance->perf_mode == MR_BALANCED_PERF_MODE) {
5786                local_numa_node = dev_to_node(&instance->pdev->dev);
5787
5788                for (i = 0; i < instance->low_latency_index_start; i++)
5789                        irq_set_affinity_hint(pci_irq_vector(instance->pdev, i),
5790                                cpumask_of_node(local_numa_node));
5791        }
5792}
5793
5794static int
5795__megasas_alloc_irq_vectors(struct megasas_instance *instance)
5796{
5797        int i, irq_flags;
5798        struct irq_affinity desc = { .pre_vectors = instance->low_latency_index_start };
5799        struct irq_affinity *descp = &desc;
5800
5801        irq_flags = PCI_IRQ_MSIX;
5802
5803        if (instance->smp_affinity_enable)
5804                irq_flags |= PCI_IRQ_AFFINITY;
5805        else
5806                descp = NULL;
5807
5808        i = pci_alloc_irq_vectors_affinity(instance->pdev,
5809                instance->low_latency_index_start,
5810                instance->msix_vectors, irq_flags, descp);
5811
5812        return i;
5813}
5814
5815/**
5816 * megasas_alloc_irq_vectors -  Allocate IRQ vectors/enable MSI-x vectors
5817 * @instance:                   Adapter soft state
5818 * return:                      void
5819 */
5820static void
5821megasas_alloc_irq_vectors(struct megasas_instance *instance)
5822{
5823        int i;
5824        unsigned int num_msix_req;
5825
5826        i = __megasas_alloc_irq_vectors(instance);
5827
5828        if ((instance->perf_mode == MR_BALANCED_PERF_MODE) &&
5829            (i != instance->msix_vectors)) {
5830                if (instance->msix_vectors)
5831                        pci_free_irq_vectors(instance->pdev);
5832                /* Disable Balanced IOPS mode and try realloc vectors */
5833                instance->perf_mode = MR_LATENCY_PERF_MODE;
5834                instance->low_latency_index_start = 1;
5835                num_msix_req = num_online_cpus() + instance->low_latency_index_start;
5836
5837                instance->msix_vectors = min(num_msix_req,
5838                                instance->msix_vectors);
5839
5840                i = __megasas_alloc_irq_vectors(instance);
5841
5842        }
5843
5844        dev_info(&instance->pdev->dev,
5845                "requested/available msix %d/%d\n", instance->msix_vectors, i);
5846
5847        if (i > 0)
5848                instance->msix_vectors = i;
5849        else
5850                instance->msix_vectors = 0;
5851
5852        if (instance->smp_affinity_enable)
5853                megasas_set_high_iops_queue_affinity_hint(instance);
5854}
5855
5856/**
5857 * megasas_init_fw -    Initializes the FW
5858 * @instance:           Adapter soft state
5859 *
5860 * This is the main function for initializing firmware
5861 */
5862
5863static int megasas_init_fw(struct megasas_instance *instance)
5864{
5865        u32 max_sectors_1;
5866        u32 max_sectors_2, tmp_sectors, msix_enable;
5867        u32 scratch_pad_1, scratch_pad_2, scratch_pad_3, status_reg;
5868        resource_size_t base_addr;
5869        void *base_addr_phys;
5870        struct megasas_ctrl_info *ctrl_info = NULL;
5871        unsigned long bar_list;
5872        int i, j, loop;
5873        struct IOV_111 *iovPtr;
5874        struct fusion_context *fusion;
5875        bool intr_coalescing;
5876        unsigned int num_msix_req;
5877        u16 lnksta, speed;
5878
5879        fusion = instance->ctrl_context;
5880
5881        /* Find first memory bar */
5882        bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
5883        instance->bar = find_first_bit(&bar_list, BITS_PER_LONG);
5884        if (pci_request_selected_regions(instance->pdev, 1<<instance->bar,
5885                                         "megasas: LSI")) {
5886                dev_printk(KERN_DEBUG, &instance->pdev->dev, "IO memory region busy!\n");
5887                return -EBUSY;
5888        }
5889
5890        base_addr = pci_resource_start(instance->pdev, instance->bar);
5891        instance->reg_set = ioremap(base_addr, 8192);
5892
5893        if (!instance->reg_set) {
5894                dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to map IO mem\n");
5895                goto fail_ioremap;
5896        }
5897
5898        base_addr_phys = &base_addr;
5899        dev_printk(KERN_DEBUG, &instance->pdev->dev,
5900                   "BAR:0x%lx  BAR's base_addr(phys):%pa  mapped virt_addr:0x%p\n",
5901                   instance->bar, base_addr_phys, instance->reg_set);
5902
5903        if (instance->adapter_type != MFI_SERIES)
5904                instance->instancet = &megasas_instance_template_fusion;
5905        else {
5906                switch (instance->pdev->device) {
5907                case PCI_DEVICE_ID_LSI_SAS1078R:
5908                case PCI_DEVICE_ID_LSI_SAS1078DE:
5909                        instance->instancet = &megasas_instance_template_ppc;
5910                        break;
5911                case PCI_DEVICE_ID_LSI_SAS1078GEN2:
5912                case PCI_DEVICE_ID_LSI_SAS0079GEN2:
5913                        instance->instancet = &megasas_instance_template_gen2;
5914                        break;
5915                case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
5916                case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
5917                        instance->instancet = &megasas_instance_template_skinny;
5918                        break;
5919                case PCI_DEVICE_ID_LSI_SAS1064R:
5920                case PCI_DEVICE_ID_DELL_PERC5:
5921                default:
5922                        instance->instancet = &megasas_instance_template_xscale;
5923                        instance->pd_list_not_supported = 1;
5924                        break;
5925                }
5926        }
5927
5928        if (megasas_transition_to_ready(instance, 0)) {
5929                dev_info(&instance->pdev->dev,
5930                         "Failed to transition controller to ready from %s!\n",
5931                         __func__);
5932                if (instance->adapter_type != MFI_SERIES) {
5933                        status_reg = instance->instancet->read_fw_status_reg(
5934                                        instance);
5935                        if (status_reg & MFI_RESET_ADAPTER) {
5936                                if (megasas_adp_reset_wait_for_ready
5937                                        (instance, true, 0) == FAILED)
5938                                        goto fail_ready_state;
5939                        } else {
5940                                goto fail_ready_state;
5941                        }
5942                } else {
5943                        atomic_set(&instance->fw_reset_no_pci_access, 1);
5944                        instance->instancet->adp_reset
5945                                (instance, instance->reg_set);
5946                        atomic_set(&instance->fw_reset_no_pci_access, 0);
5947
5948                        /*waiting for about 30 second before retry*/
5949                        ssleep(30);
5950
5951                        if (megasas_transition_to_ready(instance, 0))
5952                                goto fail_ready_state;
5953                }
5954
5955                dev_info(&instance->pdev->dev,
5956                         "FW restarted successfully from %s!\n",
5957                         __func__);
5958        }
5959
5960        megasas_init_ctrl_params(instance);
5961
5962        if (megasas_set_dma_mask(instance))
5963                goto fail_ready_state;
5964
5965        if (megasas_alloc_ctrl_mem(instance))
5966                goto fail_alloc_dma_buf;
5967
5968        if (megasas_alloc_ctrl_dma_buffers(instance))
5969                goto fail_alloc_dma_buf;
5970
5971        fusion = instance->ctrl_context;
5972
5973        if (instance->adapter_type >= VENTURA_SERIES) {
5974                scratch_pad_2 =
5975                        megasas_readl(instance,
5976                                      &instance->reg_set->outbound_scratch_pad_2);
5977                instance->max_raid_mapsize = ((scratch_pad_2 >>
5978                        MR_MAX_RAID_MAP_SIZE_OFFSET_SHIFT) &
5979                        MR_MAX_RAID_MAP_SIZE_MASK);
5980        }
5981
5982        instance->enable_sdev_max_qd = enable_sdev_max_qd;
5983
5984        switch (instance->adapter_type) {
5985        case VENTURA_SERIES:
5986                fusion->pcie_bw_limitation = true;
5987                break;
5988        case AERO_SERIES:
5989                fusion->r56_div_offload = true;
5990                break;
5991        default:
5992                break;
5993        }
5994
5995        /* Check if MSI-X is supported while in ready state */
5996        msix_enable = (instance->instancet->read_fw_status_reg(instance) &
5997                       0x4000000) >> 0x1a;
5998        if (msix_enable && !msix_disable) {
5999
6000                scratch_pad_1 = megasas_readl
6001                        (instance, &instance->reg_set->outbound_scratch_pad_1);
6002                /* Check max MSI-X vectors */
6003                if (fusion) {
6004                        if (instance->adapter_type == THUNDERBOLT_SERIES) {
6005                                /* Thunderbolt Series*/
6006                                instance->msix_vectors = (scratch_pad_1
6007                                        & MR_MAX_REPLY_QUEUES_OFFSET) + 1;
6008                        } else {
6009                                instance->msix_vectors = ((scratch_pad_1
6010                                        & MR_MAX_REPLY_QUEUES_EXT_OFFSET)
6011                                        >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1;
6012
6013                                /*
6014                                 * For Invader series, > 8 MSI-x vectors
6015                                 * supported by FW/HW implies combined
6016                                 * reply queue mode is enabled.
6017                                 * For Ventura series, > 16 MSI-x vectors
6018                                 * supported by FW/HW implies combined
6019                                 * reply queue mode is enabled.
6020                                 */
6021                                switch (instance->adapter_type) {
6022                                case INVADER_SERIES:
6023                                        if (instance->msix_vectors > 8)
6024                                                instance->msix_combined = true;
6025                                        break;
6026                                case AERO_SERIES:
6027                                case VENTURA_SERIES:
6028                                        if (instance->msix_vectors > 16)
6029                                                instance->msix_combined = true;
6030                                        break;
6031                                }
6032
6033                                if (rdpq_enable)
6034                                        instance->is_rdpq = (scratch_pad_1 & MR_RDPQ_MODE_OFFSET) ?
6035                                                                1 : 0;
6036
6037                                if (instance->adapter_type >= INVADER_SERIES &&
6038                                    !instance->msix_combined) {
6039                                        instance->msix_load_balance = true;
6040                                        instance->smp_affinity_enable = false;
6041                                }
6042
6043                                /* Save 1-15 reply post index address to local memory
6044                                 * Index 0 is already saved from reg offset
6045                                 * MPI2_REPLY_POST_HOST_INDEX_OFFSET
6046                                 */
6047                                for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) {
6048                                        instance->reply_post_host_index_addr[loop] =
6049                                                (u32 __iomem *)
6050                                                ((u8 __iomem *)instance->reg_set +
6051                                                MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET
6052                                                + (loop * 0x10));
6053                                }
6054                        }
6055
6056                        dev_info(&instance->pdev->dev,
6057                                 "firmware supports msix\t: (%d)",
6058                                 instance->msix_vectors);
6059                        if (msix_vectors)
6060                                instance->msix_vectors = min(msix_vectors,
6061                                        instance->msix_vectors);
6062                } else /* MFI adapters */
6063                        instance->msix_vectors = 1;
6064
6065
6066                /*
6067                 * For Aero (if some conditions are met), driver will configure a
6068                 * few additional reply queues with interrupt coalescing enabled.
6069                 * These queues with interrupt coalescing enabled are called
6070                 * High IOPS queues and rest of reply queues (based on number of
6071                 * logical CPUs) are termed as Low latency queues.
6072                 *
6073                 * Total Number of reply queues = High IOPS queues + low latency queues
6074                 *
6075                 * For rest of fusion adapters, 1 additional reply queue will be
6076                 * reserved for management commands, rest of reply queues
6077                 * (based on number of logical CPUs) will be used for IOs and
6078                 * referenced as IO queues.
6079                 * Total Number of reply queues = 1 + IO queues
6080                 *
6081                 * MFI adapters supports single MSI-x so single reply queue
6082                 * will be used for IO and management commands.
6083                 */
6084
6085                intr_coalescing = (scratch_pad_1 & MR_INTR_COALESCING_SUPPORT_OFFSET) ?
6086                                                                true : false;
6087                if (intr_coalescing &&
6088                        (num_online_cpus() >= MR_HIGH_IOPS_QUEUE_COUNT) &&
6089                        (instance->msix_vectors == MEGASAS_MAX_MSIX_QUEUES))
6090                        instance->perf_mode = MR_BALANCED_PERF_MODE;
6091                else
6092                        instance->perf_mode = MR_LATENCY_PERF_MODE;
6093
6094
6095                if (instance->adapter_type == AERO_SERIES) {
6096                        pcie_capability_read_word(instance->pdev, PCI_EXP_LNKSTA, &lnksta);
6097                        speed = lnksta & PCI_EXP_LNKSTA_CLS;
6098
6099                        /*
6100                         * For Aero, if PCIe link speed is <16 GT/s, then driver should operate
6101                         * in latency perf mode and enable R1 PCI bandwidth algorithm
6102                         */
6103                        if (speed < 0x4) {
6104                                instance->perf_mode = MR_LATENCY_PERF_MODE;
6105                                fusion->pcie_bw_limitation = true;
6106                        }
6107
6108                        /*
6109                         * Performance mode settings provided through module parameter-perf_mode will
6110                         * take affect only for:
6111                         * 1. Aero family of adapters.
6112                         * 2. When user sets module parameter- perf_mode in range of 0-2.
6113                         */
6114                        if ((perf_mode >= MR_BALANCED_PERF_MODE) &&
6115                                (perf_mode <= MR_LATENCY_PERF_MODE))
6116                                instance->perf_mode = perf_mode;
6117                        /*
6118                         * If intr coalescing is not supported by controller FW, then IOPS
6119                         * and Balanced modes are not feasible.
6120                         */
6121                        if (!intr_coalescing)
6122                                instance->perf_mode = MR_LATENCY_PERF_MODE;
6123
6124                }
6125
6126                if (instance->perf_mode == MR_BALANCED_PERF_MODE)
6127                        instance->low_latency_index_start =
6128                                MR_HIGH_IOPS_QUEUE_COUNT;
6129                else
6130                        instance->low_latency_index_start = 1;
6131
6132                num_msix_req = num_online_cpus() + instance->low_latency_index_start;
6133
6134                instance->msix_vectors = min(num_msix_req,
6135                                instance->msix_vectors);
6136
6137                megasas_alloc_irq_vectors(instance);
6138                if (!instance->msix_vectors)
6139                        instance->msix_load_balance = false;
6140        }
6141        /*
6142         * MSI-X host index 0 is common for all adapter.
6143         * It is used for all MPT based Adapters.
6144         */
6145        if (instance->msix_combined) {
6146                instance->reply_post_host_index_addr[0] =
6147                                (u32 *)((u8 *)instance->reg_set +
6148                                MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET);
6149        } else {
6150                instance->reply_post_host_index_addr[0] =
6151                        (u32 *)((u8 *)instance->reg_set +
6152                        MPI2_REPLY_POST_HOST_INDEX_OFFSET);
6153        }
6154
6155        if (!instance->msix_vectors) {
6156                i = pci_alloc_irq_vectors(instance->pdev, 1, 1, PCI_IRQ_LEGACY);
6157                if (i < 0)
6158                        goto fail_init_adapter;
6159        }
6160
6161        megasas_setup_reply_map(instance);
6162
6163        dev_info(&instance->pdev->dev,
6164                "current msix/online cpus\t: (%d/%d)\n",
6165                instance->msix_vectors, (unsigned int)num_online_cpus());
6166        dev_info(&instance->pdev->dev,
6167                "RDPQ mode\t: (%s)\n", instance->is_rdpq ? "enabled" : "disabled");
6168
6169        tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
6170                (unsigned long)instance);
6171
6172        /*
6173         * Below are default value for legacy Firmware.
6174         * non-fusion based controllers
6175         */
6176        instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
6177        instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
6178        /* Get operational params, sge flags, send init cmd to controller */
6179        if (instance->instancet->init_adapter(instance))
6180                goto fail_init_adapter;
6181
6182        if (instance->adapter_type >= VENTURA_SERIES) {
6183                scratch_pad_3 =
6184                        megasas_readl(instance,
6185                                      &instance->reg_set->outbound_scratch_pad_3);
6186                if ((scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK) >=
6187                        MR_DEFAULT_NVME_PAGE_SHIFT)
6188                        instance->nvme_page_size =
6189                                (1 << (scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK));
6190
6191                dev_info(&instance->pdev->dev,
6192                         "NVME page size\t: (%d)\n", instance->nvme_page_size);
6193        }
6194
6195        if (instance->msix_vectors ?
6196                megasas_setup_irqs_msix(instance, 1) :
6197                megasas_setup_irqs_ioapic(instance))
6198                goto fail_init_adapter;
6199
6200        if (instance->adapter_type != MFI_SERIES)
6201                megasas_setup_irq_poll(instance);
6202
6203        instance->instancet->enable_intr(instance);
6204
6205        dev_info(&instance->pdev->dev, "INIT adapter done\n");
6206
6207        megasas_setup_jbod_map(instance);
6208
6209        if (megasas_get_device_list(instance) != SUCCESS) {
6210                dev_err(&instance->pdev->dev,
6211                        "%s: megasas_get_device_list failed\n",
6212                        __func__);
6213                goto fail_get_ld_pd_list;
6214        }
6215
6216        /* stream detection initialization */
6217        if (instance->adapter_type >= VENTURA_SERIES) {
6218                fusion->stream_detect_by_ld =
6219                        kcalloc(MAX_LOGICAL_DRIVES_EXT,
6220                                sizeof(struct LD_STREAM_DETECT *),
6221                                GFP_KERNEL);
6222                if (!fusion->stream_detect_by_ld) {
6223                        dev_err(&instance->pdev->dev,
6224                                "unable to allocate stream detection for pool of LDs\n");
6225                        goto fail_get_ld_pd_list;
6226                }
6227                for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i) {
6228                        fusion->stream_detect_by_ld[i] =
6229                                kzalloc(sizeof(struct LD_STREAM_DETECT),
6230                                GFP_KERNEL);
6231                        if (!fusion->stream_detect_by_ld[i]) {
6232                                dev_err(&instance->pdev->dev,
6233                                        "unable to allocate stream detect by LD\n ");
6234                                for (j = 0; j < i; ++j)
6235                                        kfree(fusion->stream_detect_by_ld[j]);
6236                                kfree(fusion->stream_detect_by_ld);
6237                                fusion->stream_detect_by_ld = NULL;
6238                                goto fail_get_ld_pd_list;
6239                        }
6240                        fusion->stream_detect_by_ld[i]->mru_bit_map
6241                                = MR_STREAM_BITMAP;
6242                }
6243        }
6244
6245        /*
6246         * Compute the max allowed sectors per IO: The controller info has two
6247         * limits on max sectors. Driver should use the minimum of these two.
6248         *
6249         * 1 << stripe_sz_ops.min = max sectors per strip
6250         *
6251         * Note that older firmwares ( < FW ver 30) didn't report information
6252         * to calculate max_sectors_1. So the number ended up as zero always.
6253         */
6254        tmp_sectors = 0;
6255        ctrl_info = instance->ctrl_info_buf;
6256
6257        max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
6258                le16_to_cpu(ctrl_info->max_strips_per_io);
6259        max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size);
6260
6261        tmp_sectors = min_t(u32, max_sectors_1, max_sectors_2);
6262
6263        instance->peerIsPresent = ctrl_info->cluster.peerIsPresent;
6264        instance->passive = ctrl_info->cluster.passive;
6265        memcpy(instance->clusterId, ctrl_info->clusterId, sizeof(instance->clusterId));
6266        instance->UnevenSpanSupport =
6267                ctrl_info->adapterOperations2.supportUnevenSpans;
6268        if (instance->UnevenSpanSupport) {
6269                struct fusion_context *fusion = instance->ctrl_context;
6270                if (MR_ValidateMapInfo(instance, instance->map_id))
6271                        fusion->fast_path_io = 1;
6272                else
6273                        fusion->fast_path_io = 0;
6274
6275        }
6276        if (ctrl_info->host_interface.SRIOV) {
6277                instance->requestorId = ctrl_info->iov.requestorId;
6278                if (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) {
6279                        if (!ctrl_info->adapterOperations2.activePassive)
6280                            instance->PlasmaFW111 = 1;
6281
6282                        dev_info(&instance->pdev->dev, "SR-IOV: firmware type: %s\n",
6283                            instance->PlasmaFW111 ? "1.11" : "new");
6284
6285                        if (instance->PlasmaFW111) {
6286                            iovPtr = (struct IOV_111 *)
6287                                ((unsigned char *)ctrl_info + IOV_111_OFFSET);
6288                            instance->requestorId = iovPtr->requestorId;
6289                        }
6290                }
6291                dev_info(&instance->pdev->dev, "SRIOV: VF requestorId %d\n",
6292                        instance->requestorId);
6293        }
6294
6295        instance->crash_dump_fw_support =
6296                ctrl_info->adapterOperations3.supportCrashDump;
6297        instance->crash_dump_drv_support =
6298                (instance->crash_dump_fw_support &&
6299                instance->crash_dump_buf);
6300        if (instance->crash_dump_drv_support)
6301                megasas_set_crash_dump_params(instance,
6302                        MR_CRASH_BUF_TURN_OFF);
6303
6304        else {
6305                if (instance->crash_dump_buf)
6306                        dma_free_coherent(&instance->pdev->dev,
6307                                CRASH_DMA_BUF_SIZE,
6308                                instance->crash_dump_buf,
6309                                instance->crash_dump_h);
6310                instance->crash_dump_buf = NULL;
6311        }
6312
6313        if (instance->snapdump_wait_time) {
6314                megasas_get_snapdump_properties(instance);
6315                dev_info(&instance->pdev->dev, "Snap dump wait time\t: %d\n",
6316                         instance->snapdump_wait_time);
6317        }
6318
6319        dev_info(&instance->pdev->dev,
6320                "pci id\t\t: (0x%04x)/(0x%04x)/(0x%04x)/(0x%04x)\n",
6321                le16_to_cpu(ctrl_info->pci.vendor_id),
6322                le16_to_cpu(ctrl_info->pci.device_id),
6323                le16_to_cpu(ctrl_info->pci.sub_vendor_id),
6324                le16_to_cpu(ctrl_info->pci.sub_device_id));
6325        dev_info(&instance->pdev->dev, "unevenspan support      : %s\n",
6326                instance->UnevenSpanSupport ? "yes" : "no");
6327        dev_info(&instance->pdev->dev, "firmware crash dump     : %s\n",
6328                instance->crash_dump_drv_support ? "yes" : "no");
6329        dev_info(&instance->pdev->dev, "JBOD sequence map       : %s\n",
6330                instance->use_seqnum_jbod_fp ? "enabled" : "disabled");
6331
6332        instance->max_sectors_per_req = instance->max_num_sge *
6333                                                SGE_BUFFER_SIZE / 512;
6334        if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
6335                instance->max_sectors_per_req = tmp_sectors;
6336
6337        /* Check for valid throttlequeuedepth module parameter */
6338        if (throttlequeuedepth &&
6339                        throttlequeuedepth <= instance->max_scsi_cmds)
6340                instance->throttlequeuedepth = throttlequeuedepth;
6341        else
6342                instance->throttlequeuedepth =
6343                                MEGASAS_THROTTLE_QUEUE_DEPTH;
6344
6345        if ((resetwaittime < 1) ||
6346            (resetwaittime > MEGASAS_RESET_WAIT_TIME))
6347                resetwaittime = MEGASAS_RESET_WAIT_TIME;
6348
6349        if ((scmd_timeout < 10) || (scmd_timeout > MEGASAS_DEFAULT_CMD_TIMEOUT))
6350                scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
6351
6352        /* Launch SR-IOV heartbeat timer */
6353        if (instance->requestorId) {
6354                if (!megasas_sriov_start_heartbeat(instance, 1)) {
6355                        megasas_start_timer(instance);
6356                } else {
6357                        instance->skip_heartbeat_timer_del = 1;
6358                        goto fail_get_ld_pd_list;
6359                }
6360        }
6361
6362        /*
6363         * Create and start watchdog thread which will monitor
6364         * controller state every 1 sec and trigger OCR when
6365         * it enters fault state
6366         */
6367        if (instance->adapter_type != MFI_SERIES)
6368                if (megasas_fusion_start_watchdog(instance) != SUCCESS)
6369                        goto fail_start_watchdog;
6370
6371        return 0;
6372
6373fail_start_watchdog:
6374        if (instance->requestorId && !instance->skip_heartbeat_timer_del)
6375                del_timer_sync(&instance->sriov_heartbeat_timer);
6376fail_get_ld_pd_list:
6377        instance->instancet->disable_intr(instance);
6378        megasas_destroy_irqs(instance);
6379fail_init_adapter:
6380        if (instance->msix_vectors)
6381                pci_free_irq_vectors(instance->pdev);
6382        instance->msix_vectors = 0;
6383fail_alloc_dma_buf:
6384        megasas_free_ctrl_dma_buffers(instance);
6385        megasas_free_ctrl_mem(instance);
6386fail_ready_state:
6387        iounmap(instance->reg_set);
6388
6389fail_ioremap:
6390        pci_release_selected_regions(instance->pdev, 1<<instance->bar);
6391
6392        dev_err(&instance->pdev->dev, "Failed from %s %d\n",
6393                __func__, __LINE__);
6394        return -EINVAL;
6395}
6396
6397/**
6398 * megasas_release_mfi -        Reverses the FW initialization
6399 * @instance:                   Adapter soft state
6400 */
6401static void megasas_release_mfi(struct megasas_instance *instance)
6402{
6403        u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
6404
6405        if (instance->reply_queue)
6406                dma_free_coherent(&instance->pdev->dev, reply_q_sz,
6407                            instance->reply_queue, instance->reply_queue_h);
6408
6409        megasas_free_cmds(instance);
6410
6411        iounmap(instance->reg_set);
6412
6413        pci_release_selected_regions(instance->pdev, 1<<instance->bar);
6414}
6415
6416/**
6417 * megasas_get_seq_num -        Gets latest event sequence numbers
6418 * @instance:                   Adapter soft state
6419 * @eli:                        FW event log sequence numbers information
6420 *
6421 * FW maintains a log of all events in a non-volatile area. Upper layers would
6422 * usually find out the latest sequence number of the events, the seq number at
6423 * the boot etc. They would "read" all the events below the latest seq number
6424 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
6425 * number), they would subsribe to AEN (asynchronous event notification) and
6426 * wait for the events to happen.
6427 */
6428static int
6429megasas_get_seq_num(struct megasas_instance *instance,
6430                    struct megasas_evt_log_info *eli)
6431{
6432        struct megasas_cmd *cmd;
6433        struct megasas_dcmd_frame *dcmd;
6434        struct megasas_evt_log_info *el_info;
6435        dma_addr_t el_info_h = 0;
6436        int ret;
6437
6438        cmd = megasas_get_cmd(instance);
6439
6440        if (!cmd) {
6441                return -ENOMEM;
6442        }
6443
6444        dcmd = &cmd->frame->dcmd;
6445        el_info = dma_alloc_coherent(&instance->pdev->dev,
6446                                     sizeof(struct megasas_evt_log_info),
6447                                     &el_info_h, GFP_KERNEL);
6448        if (!el_info) {
6449                megasas_return_cmd(instance, cmd);
6450                return -ENOMEM;
6451        }
6452
6453        memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6454
6455        dcmd->cmd = MFI_CMD_DCMD;
6456        dcmd->cmd_status = 0x0;
6457        dcmd->sge_count = 1;
6458        dcmd->flags = MFI_FRAME_DIR_READ;
6459        dcmd->timeout = 0;
6460        dcmd->pad_0 = 0;
6461        dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info));
6462        dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO);
6463
6464        megasas_set_dma_settings(instance, dcmd, el_info_h,
6465                                 sizeof(struct megasas_evt_log_info));
6466
6467        ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
6468        if (ret != DCMD_SUCCESS) {
6469                dev_err(&instance->pdev->dev, "Failed from %s %d\n",
6470                        __func__, __LINE__);
6471                goto dcmd_failed;
6472        }
6473
6474        /*
6475         * Copy the data back into callers buffer
6476         */
6477        eli->newest_seq_num = el_info->newest_seq_num;
6478        eli->oldest_seq_num = el_info->oldest_seq_num;
6479        eli->clear_seq_num = el_info->clear_seq_num;
6480        eli->shutdown_seq_num = el_info->shutdown_seq_num;
6481        eli->boot_seq_num = el_info->boot_seq_num;
6482
6483dcmd_failed:
6484        dma_free_coherent(&instance->pdev->dev,
6485                        sizeof(struct megasas_evt_log_info),
6486                        el_info, el_info_h);
6487
6488        megasas_return_cmd(instance, cmd);
6489
6490        return ret;
6491}
6492
6493/**
6494 * megasas_register_aen -       Registers for asynchronous event notification
6495 * @instance:                   Adapter soft state
6496 * @seq_num:                    The starting sequence number
6497 * @class_locale:               Class of the event
6498 *
6499 * This function subscribes for AEN for events beyond the @seq_num. It requests
6500 * to be notified if and only if the event is of type @class_locale
6501 */
6502static int
6503megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
6504                     u32 class_locale_word)
6505{
6506        int ret_val;
6507        struct megasas_cmd *cmd;
6508        struct megasas_dcmd_frame *dcmd;
6509        union megasas_evt_class_locale curr_aen;
6510        union megasas_evt_class_locale prev_aen;
6511
6512        /*
6513         * If there an AEN pending already (aen_cmd), check if the
6514         * class_locale of that pending AEN is inclusive of the new
6515         * AEN request we currently have. If it is, then we don't have
6516         * to do anything. In other words, whichever events the current
6517         * AEN request is subscribing to, have already been subscribed
6518         * to.
6519         *
6520         * If the old_cmd is _not_ inclusive, then we have to abort
6521         * that command, form a class_locale that is superset of both
6522         * old and current and re-issue to the FW
6523         */
6524
6525        curr_aen.word = class_locale_word;
6526
6527        if (instance->aen_cmd) {
6528
6529                prev_aen.word =
6530                        le32_to_cpu(instance->aen_cmd->frame->dcmd.mbox.w[1]);
6531
6532                if ((curr_aen.members.class < MFI_EVT_CLASS_DEBUG) ||
6533                    (curr_aen.members.class > MFI_EVT_CLASS_DEAD)) {
6534                        dev_info(&instance->pdev->dev,
6535                                 "%s %d out of range class %d send by application\n",
6536                                 __func__, __LINE__, curr_aen.members.class);
6537                        return 0;
6538                }
6539
6540                /*
6541                 * A class whose enum value is smaller is inclusive of all
6542                 * higher values. If a PROGRESS (= -1) was previously
6543                 * registered, then a new registration requests for higher
6544                 * classes need not be sent to FW. They are automatically
6545                 * included.
6546                 *
6547                 * Locale numbers don't have such hierarchy. They are bitmap
6548                 * values
6549                 */
6550                if ((prev_aen.members.class <= curr_aen.members.class) &&
6551                    !((prev_aen.members.locale & curr_aen.members.locale) ^
6552                      curr_aen.members.locale)) {
6553                        /*
6554                         * Previously issued event registration includes
6555                         * current request. Nothing to do.
6556                         */
6557                        return 0;
6558                } else {
6559                        curr_aen.members.locale |= prev_aen.members.locale;
6560
6561                        if (prev_aen.members.class < curr_aen.members.class)
6562                                curr_aen.members.class = prev_aen.members.class;
6563
6564                        instance->aen_cmd->abort_aen = 1;
6565                        ret_val = megasas_issue_blocked_abort_cmd(instance,
6566                                                                  instance->
6567                                                                  aen_cmd, 30);
6568
6569                        if (ret_val) {
6570                                dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to abort "
6571                                       "previous AEN command\n");
6572                                return ret_val;
6573                        }
6574                }
6575        }
6576
6577        cmd = megasas_get_cmd(instance);
6578
6579        if (!cmd)
6580                return -ENOMEM;
6581
6582        dcmd = &cmd->frame->dcmd;
6583
6584        memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
6585
6586        /*
6587         * Prepare DCMD for aen registration
6588         */
6589        memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6590
6591        dcmd->cmd = MFI_CMD_DCMD;
6592        dcmd->cmd_status = 0x0;
6593        dcmd->sge_count = 1;
6594        dcmd->flags = MFI_FRAME_DIR_READ;
6595        dcmd->timeout = 0;
6596        dcmd->pad_0 = 0;
6597        dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail));
6598        dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT);
6599        dcmd->mbox.w[0] = cpu_to_le32(seq_num);
6600        instance->last_seq_num = seq_num;
6601        dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word);
6602
6603        megasas_set_dma_settings(instance, dcmd, instance->evt_detail_h,
6604                                 sizeof(struct megasas_evt_detail));
6605
6606        if (instance->aen_cmd != NULL) {
6607                megasas_return_cmd(instance, cmd);
6608                return 0;
6609        }
6610
6611        /*
6612         * Store reference to the cmd used to register for AEN. When an
6613         * application wants us to register for AEN, we have to abort this
6614         * cmd and re-register with a new EVENT LOCALE supplied by that app
6615         */
6616        instance->aen_cmd = cmd;
6617
6618        /*
6619         * Issue the aen registration frame
6620         */
6621        instance->instancet->issue_dcmd(instance, cmd);
6622
6623        return 0;
6624}
6625
6626/* megasas_get_target_prop - Send DCMD with below details to firmware.
6627 *
6628 * This DCMD will fetch few properties of LD/system PD defined
6629 * in MR_TARGET_DEV_PROPERTIES. eg. Queue Depth, MDTS value.
6630 *
6631 * DCMD send by drivers whenever new target is added to the OS.
6632 *
6633 * dcmd.opcode         - MR_DCMD_DEV_GET_TARGET_PROP
6634 * dcmd.mbox.b[0]      - DCMD is to be fired for LD or system PD.
6635 *                       0 = system PD, 1 = LD.
6636 * dcmd.mbox.s[1]      - TargetID for LD/system PD.
6637 * dcmd.sge IN         - Pointer to return MR_TARGET_DEV_PROPERTIES.
6638 *
6639 * @instance:           Adapter soft state
6640 * @sdev:               OS provided scsi device
6641 *
6642 * Returns 0 on success non-zero on failure.
6643 */
6644int
6645megasas_get_target_prop(struct megasas_instance *instance,
6646                        struct scsi_device *sdev)
6647{
6648        int ret;
6649        struct megasas_cmd *cmd;
6650        struct megasas_dcmd_frame *dcmd;
6651        u16 targetId = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL) +
6652                        sdev->id;
6653
6654        cmd = megasas_get_cmd(instance);
6655
6656        if (!cmd) {
6657                dev_err(&instance->pdev->dev,
6658                        "Failed to get cmd %s\n", __func__);
6659                return -ENOMEM;
6660        }
6661
6662        dcmd = &cmd->frame->dcmd;
6663
6664        memset(instance->tgt_prop, 0, sizeof(*instance->tgt_prop));
6665        memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6666        dcmd->mbox.b[0] = MEGASAS_IS_LOGICAL(sdev);
6667
6668        dcmd->mbox.s[1] = cpu_to_le16(targetId);
6669        dcmd->cmd = MFI_CMD_DCMD;
6670        dcmd->cmd_status = 0xFF;
6671        dcmd->sge_count = 1;
6672        dcmd->flags = MFI_FRAME_DIR_READ;
6673        dcmd->timeout = 0;
6674        dcmd->pad_0 = 0;
6675        dcmd->data_xfer_len =
6676                cpu_to_le32(sizeof(struct MR_TARGET_PROPERTIES));
6677        dcmd->opcode = cpu_to_le32(MR_DCMD_DRV_GET_TARGET_PROP);
6678
6679        megasas_set_dma_settings(instance, dcmd, instance->tgt_prop_h,
6680                                 sizeof(struct MR_TARGET_PROPERTIES));
6681
6682        if ((instance->adapter_type != MFI_SERIES) &&
6683            !instance->mask_interrupts)
6684                ret = megasas_issue_blocked_cmd(instance,
6685                                                cmd, MFI_IO_TIMEOUT_SECS);
6686        else
6687                ret = megasas_issue_polled(instance, cmd);
6688
6689        switch (ret) {
6690        case DCMD_TIMEOUT:
6691                switch (dcmd_timeout_ocr_possible(instance)) {
6692                case INITIATE_OCR:
6693                        cmd->flags |= DRV_DCMD_SKIP_REFIRE;
6694                        mutex_unlock(&instance->reset_mutex);
6695                        megasas_reset_fusion(instance->host,
6696                                             MFI_IO_TIMEOUT_OCR);
6697                        mutex_lock(&instance->reset_mutex);
6698                        break;
6699                case KILL_ADAPTER:
6700                        megaraid_sas_kill_hba(instance);
6701                        break;
6702                case IGNORE_TIMEOUT:
6703                        dev_info(&instance->pdev->dev,
6704                                 "Ignore DCMD timeout: %s %d\n",
6705                                 __func__, __LINE__);
6706                        break;
6707                }
6708                break;
6709
6710        default:
6711                megasas_return_cmd(instance, cmd);
6712        }
6713        if (ret != DCMD_SUCCESS)
6714                dev_err(&instance->pdev->dev,
6715                        "return from %s %d return value %d\n",
6716                        __func__, __LINE__, ret);
6717
6718        return ret;
6719}
6720
6721/**
6722 * megasas_start_aen -  Subscribes to AEN during driver load time
6723 * @instance:           Adapter soft state
6724 */
6725static int megasas_start_aen(struct megasas_instance *instance)
6726{
6727        struct megasas_evt_log_info eli;
6728        union megasas_evt_class_locale class_locale;
6729
6730        /*
6731         * Get the latest sequence number from FW
6732         */
6733        memset(&eli, 0, sizeof(eli));
6734
6735        if (megasas_get_seq_num(instance, &eli))
6736                return -1;
6737
6738        /*
6739         * Register AEN with FW for latest sequence number plus 1
6740         */
6741        class_locale.members.reserved = 0;
6742        class_locale.members.locale = MR_EVT_LOCALE_ALL;
6743        class_locale.members.class = MR_EVT_CLASS_DEBUG;
6744
6745        return megasas_register_aen(instance,
6746                        le32_to_cpu(eli.newest_seq_num) + 1,
6747                        class_locale.word);
6748}
6749
6750/**
6751 * megasas_io_attach -  Attaches this driver to SCSI mid-layer
6752 * @instance:           Adapter soft state
6753 */
6754static int megasas_io_attach(struct megasas_instance *instance)
6755{
6756        struct Scsi_Host *host = instance->host;
6757
6758        /*
6759         * Export parameters required by SCSI mid-layer
6760         */
6761        host->unique_id = instance->unique_id;
6762        host->can_queue = instance->max_scsi_cmds;
6763        host->this_id = instance->init_id;
6764        host->sg_tablesize = instance->max_num_sge;
6765
6766        if (instance->fw_support_ieee)
6767                instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE;
6768
6769        /*
6770         * Check if the module parameter value for max_sectors can be used
6771         */
6772        if (max_sectors && max_sectors < instance->max_sectors_per_req)
6773                instance->max_sectors_per_req = max_sectors;
6774        else {
6775                if (max_sectors) {
6776                        if (((instance->pdev->device ==
6777                                PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
6778                                (instance->pdev->device ==
6779                                PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
6780                                (max_sectors <= MEGASAS_MAX_SECTORS)) {
6781                                instance->max_sectors_per_req = max_sectors;
6782                        } else {
6783                        dev_info(&instance->pdev->dev, "max_sectors should be > 0"
6784                                "and <= %d (or < 1MB for GEN2 controller)\n",
6785                                instance->max_sectors_per_req);
6786                        }
6787                }
6788        }
6789
6790        host->max_sectors = instance->max_sectors_per_req;
6791        host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
6792        host->max_channel = MEGASAS_MAX_CHANNELS - 1;
6793        host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
6794        host->max_lun = MEGASAS_MAX_LUN;
6795        host->max_cmd_len = 16;
6796
6797        /*
6798         * Notify the mid-layer about the new controller
6799         */
6800        if (scsi_add_host(host, &instance->pdev->dev)) {
6801                dev_err(&instance->pdev->dev,
6802                        "Failed to add host from %s %d\n",
6803                        __func__, __LINE__);
6804                return -ENODEV;
6805        }
6806
6807        return 0;
6808}
6809
6810/**
6811 * megasas_set_dma_mask -       Set DMA mask for supported controllers
6812 *
6813 * @instance:           Adapter soft state
6814 * Description:
6815 *
6816 * For Ventura, driver/FW will operate in 63bit DMA addresses.
6817 *
6818 * For invader-
6819 *      By default, driver/FW will operate in 32bit DMA addresses
6820 *      for consistent DMA mapping but if 32 bit consistent
6821 *      DMA mask fails, driver will try with 63 bit consistent
6822 *      mask provided FW is true 63bit DMA capable
6823 *
6824 * For older controllers(Thunderbolt and MFI based adapters)-
6825 *      driver/FW will operate in 32 bit consistent DMA addresses.
6826 */
6827static int
6828megasas_set_dma_mask(struct megasas_instance *instance)
6829{
6830        u64 consistent_mask;
6831        struct pci_dev *pdev;
6832        u32 scratch_pad_1;
6833
6834        pdev = instance->pdev;
6835        consistent_mask = (instance->adapter_type >= VENTURA_SERIES) ?
6836                                DMA_BIT_MASK(63) : DMA_BIT_MASK(32);
6837
6838        if (IS_DMA64) {
6839                if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(63)) &&
6840                    dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
6841                        goto fail_set_dma_mask;
6842
6843                if ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) &&
6844                    (dma_set_coherent_mask(&pdev->dev, consistent_mask) &&
6845                     dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))) {
6846                        /*
6847                         * If 32 bit DMA mask fails, then try for 64 bit mask
6848                         * for FW capable of handling 64 bit DMA.
6849                         */
6850                        scratch_pad_1 = megasas_readl
6851                                (instance, &instance->reg_set->outbound_scratch_pad_1);
6852
6853                        if (!(scratch_pad_1 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET))
6854                                goto fail_set_dma_mask;
6855                        else if (dma_set_mask_and_coherent(&pdev->dev,
6856                                                           DMA_BIT_MASK(63)))
6857                                goto fail_set_dma_mask;
6858                }
6859        } else if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
6860                goto fail_set_dma_mask;
6861
6862        if (pdev->dev.coherent_dma_mask == DMA_BIT_MASK(32))
6863                instance->consistent_mask_64bit = false;
6864        else
6865                instance->consistent_mask_64bit = true;
6866
6867        dev_info(&pdev->dev, "%s bit DMA mask and %s bit consistent mask\n",
6868                 ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) ? "63" : "32"),
6869                 (instance->consistent_mask_64bit ? "63" : "32"));
6870
6871        return 0;
6872
6873fail_set_dma_mask:
6874        dev_err(&pdev->dev, "Failed to set DMA mask\n");
6875        return -1;
6876
6877}
6878
6879/*
6880 * megasas_set_adapter_type -   Set adapter type.
6881 *                              Supported controllers can be divided in
6882 *                              different categories-
6883 *                                      enum MR_ADAPTER_TYPE {
6884 *                                              MFI_SERIES = 1,
6885 *                                              THUNDERBOLT_SERIES = 2,
6886 *                                              INVADER_SERIES = 3,
6887 *                                              VENTURA_SERIES = 4,
6888 *                                              AERO_SERIES = 5,
6889 *                                      };
6890 * @instance:                   Adapter soft state
6891 * return:                      void
6892 */
6893static inline void megasas_set_adapter_type(struct megasas_instance *instance)
6894{
6895        if ((instance->pdev->vendor == PCI_VENDOR_ID_DELL) &&
6896            (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5)) {
6897                instance->adapter_type = MFI_SERIES;
6898        } else {
6899                switch (instance->pdev->device) {
6900                case PCI_DEVICE_ID_LSI_AERO_10E1:
6901                case PCI_DEVICE_ID_LSI_AERO_10E2:
6902                case PCI_DEVICE_ID_LSI_AERO_10E5:
6903                case PCI_DEVICE_ID_LSI_AERO_10E6:
6904                        instance->adapter_type = AERO_SERIES;
6905                        break;
6906                case PCI_DEVICE_ID_LSI_VENTURA:
6907                case PCI_DEVICE_ID_LSI_CRUSADER:
6908                case PCI_DEVICE_ID_LSI_HARPOON:
6909                case PCI_DEVICE_ID_LSI_TOMCAT:
6910                case PCI_DEVICE_ID_LSI_VENTURA_4PORT:
6911                case PCI_DEVICE_ID_LSI_CRUSADER_4PORT:
6912                        instance->adapter_type = VENTURA_SERIES;
6913                        break;
6914                case PCI_DEVICE_ID_LSI_FUSION:
6915                case PCI_DEVICE_ID_LSI_PLASMA:
6916                        instance->adapter_type = THUNDERBOLT_SERIES;
6917                        break;
6918                case PCI_DEVICE_ID_LSI_INVADER:
6919                case PCI_DEVICE_ID_LSI_INTRUDER:
6920                case PCI_DEVICE_ID_LSI_INTRUDER_24:
6921                case PCI_DEVICE_ID_LSI_CUTLASS_52:
6922                case PCI_DEVICE_ID_LSI_CUTLASS_53:
6923                case PCI_DEVICE_ID_LSI_FURY:
6924                        instance->adapter_type = INVADER_SERIES;
6925                        break;
6926                default: /* For all other supported controllers */
6927                        instance->adapter_type = MFI_SERIES;
6928                        break;
6929                }
6930        }
6931}
6932
6933static inline int megasas_alloc_mfi_ctrl_mem(struct megasas_instance *instance)
6934{
6935        instance->producer = dma_alloc_coherent(&instance->pdev->dev,
6936                        sizeof(u32), &instance->producer_h, GFP_KERNEL);
6937        instance->consumer = dma_alloc_coherent(&instance->pdev->dev,
6938                        sizeof(u32), &instance->consumer_h, GFP_KERNEL);
6939
6940        if (!instance->producer || !instance->consumer) {
6941                dev_err(&instance->pdev->dev,
6942                        "Failed to allocate memory for producer, consumer\n");
6943                return -1;
6944        }
6945
6946        *instance->producer = 0;
6947        *instance->consumer = 0;
6948        return 0;
6949}
6950
6951/**
6952 * megasas_alloc_ctrl_mem -     Allocate per controller memory for core data
6953 *                              structures which are not common across MFI
6954 *                              adapters and fusion adapters.
6955 *                              For MFI based adapters, allocate producer and
6956 *                              consumer buffers. For fusion adapters, allocate
6957 *                              memory for fusion context.
6958 * @instance:                   Adapter soft state
6959 * return:                      0 for SUCCESS
6960 */
6961static int megasas_alloc_ctrl_mem(struct megasas_instance *instance)
6962{
6963        instance->reply_map = kcalloc(nr_cpu_ids, sizeof(unsigned int),
6964                                      GFP_KERNEL);
6965        if (!instance->reply_map)
6966                return -ENOMEM;
6967
6968        switch (instance->adapter_type) {
6969        case MFI_SERIES:
6970                if (megasas_alloc_mfi_ctrl_mem(instance))
6971                        goto fail;
6972                break;
6973        case AERO_SERIES:
6974        case VENTURA_SERIES:
6975        case THUNDERBOLT_SERIES:
6976        case INVADER_SERIES:
6977                if (megasas_alloc_fusion_context(instance))
6978                        goto fail;
6979                break;
6980        }
6981
6982        return 0;
6983 fail:
6984        kfree(instance->reply_map);
6985        instance->reply_map = NULL;
6986        return -ENOMEM;
6987}
6988
6989/*
6990 * megasas_free_ctrl_mem -      Free fusion context for fusion adapters and
6991 *                              producer, consumer buffers for MFI adapters
6992 *
6993 * @instance -                  Adapter soft instance
6994 *
6995 */
6996static inline void megasas_free_ctrl_mem(struct megasas_instance *instance)
6997{
6998        kfree(instance->reply_map);
6999        if (instance->adapter_type == MFI_SERIES) {
7000                if (instance->producer)
7001                        dma_free_coherent(&instance->pdev->dev, sizeof(u32),
7002                                            instance->producer,
7003                                            instance->producer_h);
7004                if (instance->consumer)
7005                        dma_free_coherent(&instance->pdev->dev, sizeof(u32),
7006                                            instance->consumer,
7007                                            instance->consumer_h);
7008        } else {
7009                megasas_free_fusion_context(instance);
7010        }
7011}
7012
7013/**
7014 * megasas_alloc_ctrl_dma_buffers -     Allocate consistent DMA buffers during
7015 *                                      driver load time
7016 *
7017 * @instance-                           Adapter soft instance
7018 * @return-                             O for SUCCESS
7019 */
7020static inline
7021int megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance)
7022{
7023        struct pci_dev *pdev = instance->pdev;
7024        struct fusion_context *fusion = instance->ctrl_context;
7025
7026        instance->evt_detail = dma_alloc_coherent(&pdev->dev,
7027                        sizeof(struct megasas_evt_detail),
7028                        &instance->evt_detail_h, GFP_KERNEL);
7029
7030        if (!instance->evt_detail) {
7031                dev_err(&instance->pdev->dev,
7032                        "Failed to allocate event detail buffer\n");
7033                return -ENOMEM;
7034        }
7035
7036        if (fusion) {
7037                fusion->ioc_init_request =
7038                        dma_alloc_coherent(&pdev->dev,
7039                                           sizeof(struct MPI2_IOC_INIT_REQUEST),
7040                                           &fusion->ioc_init_request_phys,
7041                                           GFP_KERNEL);
7042
7043                if (!fusion->ioc_init_request) {
7044                        dev_err(&pdev->dev,
7045                                "Failed to allocate PD list buffer\n");
7046                        return -ENOMEM;
7047                }
7048
7049                instance->snapdump_prop = dma_alloc_coherent(&pdev->dev,
7050                                sizeof(struct MR_SNAPDUMP_PROPERTIES),
7051                                &instance->snapdump_prop_h, GFP_KERNEL);
7052
7053                if (!instance->snapdump_prop)
7054                        dev_err(&pdev->dev,
7055                                "Failed to allocate snapdump properties buffer\n");
7056
7057                instance->host_device_list_buf = dma_alloc_coherent(&pdev->dev,
7058                                                        HOST_DEVICE_LIST_SZ,
7059                                                        &instance->host_device_list_buf_h,
7060                                                        GFP_KERNEL);
7061
7062                if (!instance->host_device_list_buf) {
7063                        dev_err(&pdev->dev,
7064                                "Failed to allocate targetid list buffer\n");
7065                        return -ENOMEM;
7066                }
7067
7068        }
7069
7070        instance->pd_list_buf =
7071                dma_alloc_coherent(&pdev->dev,
7072                                     MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
7073                                     &instance->pd_list_buf_h, GFP_KERNEL);
7074
7075        if (!instance->pd_list_buf) {
7076                dev_err(&pdev->dev, "Failed to allocate PD list buffer\n");
7077                return -ENOMEM;
7078        }
7079
7080        instance->ctrl_info_buf =
7081                dma_alloc_coherent(&pdev->dev,
7082                                     sizeof(struct megasas_ctrl_info),
7083                                     &instance->ctrl_info_buf_h, GFP_KERNEL);
7084
7085        if (!instance->ctrl_info_buf) {
7086                dev_err(&pdev->dev,
7087                        "Failed to allocate controller info buffer\n");
7088                return -ENOMEM;
7089        }
7090
7091        instance->ld_list_buf =
7092                dma_alloc_coherent(&pdev->dev,
7093                                     sizeof(struct MR_LD_LIST),
7094                                     &instance->ld_list_buf_h, GFP_KERNEL);
7095
7096        if (!instance->ld_list_buf) {
7097                dev_err(&pdev->dev, "Failed to allocate LD list buffer\n");
7098                return -ENOMEM;
7099        }
7100
7101        instance->ld_targetid_list_buf =
7102                dma_alloc_coherent(&pdev->dev,
7103                                sizeof(struct MR_LD_TARGETID_LIST),
7104                                &instance->ld_targetid_list_buf_h, GFP_KERNEL);
7105
7106        if (!instance->ld_targetid_list_buf) {
7107                dev_err(&pdev->dev,
7108                        "Failed to allocate LD targetid list buffer\n");
7109                return -ENOMEM;
7110        }
7111
7112        if (!reset_devices) {
7113                instance->system_info_buf =
7114                        dma_alloc_coherent(&pdev->dev,
7115                                        sizeof(struct MR_DRV_SYSTEM_INFO),
7116                                        &instance->system_info_h, GFP_KERNEL);
7117                instance->pd_info =
7118                        dma_alloc_coherent(&pdev->dev,
7119                                        sizeof(struct MR_PD_INFO),
7120                                        &instance->pd_info_h, GFP_KERNEL);
7121                instance->tgt_prop =
7122                        dma_alloc_coherent(&pdev->dev,
7123                                        sizeof(struct MR_TARGET_PROPERTIES),
7124                                        &instance->tgt_prop_h, GFP_KERNEL);
7125                instance->crash_dump_buf =
7126                        dma_alloc_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE,
7127                                        &instance->crash_dump_h, GFP_KERNEL);
7128
7129                if (!instance->system_info_buf)
7130                        dev_err(&instance->pdev->dev,
7131                                "Failed to allocate system info buffer\n");
7132
7133                if (!instance->pd_info)
7134                        dev_err(&instance->pdev->dev,
7135                                "Failed to allocate pd_info buffer\n");
7136
7137                if (!instance->tgt_prop)
7138                        dev_err(&instance->pdev->dev,
7139                                "Failed to allocate tgt_prop buffer\n");
7140
7141                if (!instance->crash_dump_buf)
7142                        dev_err(&instance->pdev->dev,
7143                                "Failed to allocate crash dump buffer\n");
7144        }
7145
7146        return 0;
7147}
7148
7149/*
7150 * megasas_free_ctrl_dma_buffers -      Free consistent DMA buffers allocated
7151 *                                      during driver load time
7152 *
7153 * @instance-                           Adapter soft instance
7154 *
7155 */
7156static inline
7157void megasas_free_ctrl_dma_buffers(struct megasas_instance *instance)
7158{
7159        struct pci_dev *pdev = instance->pdev;
7160        struct fusion_context *fusion = instance->ctrl_context;
7161
7162        if (instance->evt_detail)
7163                dma_free_coherent(&pdev->dev, sizeof(struct megasas_evt_detail),
7164                                    instance->evt_detail,
7165                                    instance->evt_detail_h);
7166
7167        if (fusion && fusion->ioc_init_request)
7168                dma_free_coherent(&pdev->dev,
7169                                  sizeof(struct MPI2_IOC_INIT_REQUEST),
7170                                  fusion->ioc_init_request,
7171                                  fusion->ioc_init_request_phys);
7172
7173        if (instance->pd_list_buf)
7174                dma_free_coherent(&pdev->dev,
7175                                    MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
7176                                    instance->pd_list_buf,
7177                                    instance->pd_list_buf_h);
7178
7179        if (instance->ld_list_buf)
7180                dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_LIST),
7181                                    instance->ld_list_buf,
7182                                    instance->ld_list_buf_h);
7183
7184        if (instance->ld_targetid_list_buf)
7185                dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_TARGETID_LIST),
7186                                    instance->ld_targetid_list_buf,
7187                                    instance->ld_targetid_list_buf_h);
7188
7189        if (instance->ctrl_info_buf)
7190                dma_free_coherent(&pdev->dev, sizeof(struct megasas_ctrl_info),
7191                                    instance->ctrl_info_buf,
7192                                    instance->ctrl_info_buf_h);
7193
7194        if (instance->system_info_buf)
7195                dma_free_coherent(&pdev->dev, sizeof(struct MR_DRV_SYSTEM_INFO),
7196                                    instance->system_info_buf,
7197                                    instance->system_info_h);
7198
7199        if (instance->pd_info)
7200                dma_free_coherent(&pdev->dev, sizeof(struct MR_PD_INFO),
7201                                    instance->pd_info, instance->pd_info_h);
7202
7203        if (instance->tgt_prop)
7204                dma_free_coherent(&pdev->dev, sizeof(struct MR_TARGET_PROPERTIES),
7205                                    instance->tgt_prop, instance->tgt_prop_h);
7206
7207        if (instance->crash_dump_buf)
7208                dma_free_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE,
7209                                    instance->crash_dump_buf,
7210                                    instance->crash_dump_h);
7211
7212        if (instance->snapdump_prop)
7213                dma_free_coherent(&pdev->dev,
7214                                  sizeof(struct MR_SNAPDUMP_PROPERTIES),
7215                                  instance->snapdump_prop,
7216                                  instance->snapdump_prop_h);
7217
7218        if (instance->host_device_list_buf)
7219                dma_free_coherent(&pdev->dev,
7220                                  HOST_DEVICE_LIST_SZ,
7221                                  instance->host_device_list_buf,
7222                                  instance->host_device_list_buf_h);
7223
7224}
7225
7226/*
7227 * megasas_init_ctrl_params -           Initialize controller's instance
7228 *                                      parameters before FW init
7229 * @instance -                          Adapter soft instance
7230 * @return -                            void
7231 */
7232static inline void megasas_init_ctrl_params(struct megasas_instance *instance)
7233{
7234        instance->fw_crash_state = UNAVAILABLE;
7235
7236        megasas_poll_wait_aen = 0;
7237        instance->issuepend_done = 1;
7238        atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
7239
7240        /*
7241         * Initialize locks and queues
7242         */
7243        INIT_LIST_HEAD(&instance->cmd_pool);
7244        INIT_LIST_HEAD(&instance->internal_reset_pending_q);
7245
7246        atomic_set(&instance->fw_outstanding, 0);
7247        atomic64_set(&instance->total_io_count, 0);
7248
7249        init_waitqueue_head(&instance->int_cmd_wait_q);
7250        init_waitqueue_head(&instance->abort_cmd_wait_q);
7251
7252        spin_lock_init(&instance->crashdump_lock);
7253        spin_lock_init(&instance->mfi_pool_lock);
7254        spin_lock_init(&instance->hba_lock);
7255        spin_lock_init(&instance->stream_lock);
7256        spin_lock_init(&instance->completion_lock);
7257
7258        mutex_init(&instance->reset_mutex);
7259
7260        if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
7261            (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY))
7262                instance->flag_ieee = 1;
7263
7264        megasas_dbg_lvl = 0;
7265        instance->flag = 0;
7266        instance->unload = 1;
7267        instance->last_time = 0;
7268        instance->disableOnlineCtrlReset = 1;
7269        instance->UnevenSpanSupport = 0;
7270        instance->smp_affinity_enable = smp_affinity_enable ? true : false;
7271        instance->msix_load_balance = false;
7272
7273        if (instance->adapter_type != MFI_SERIES)
7274                INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
7275        else
7276                INIT_WORK(&instance->work_init, process_fw_state_change_wq);
7277}
7278
7279/**
7280 * megasas_probe_one -  PCI hotplug entry point
7281 * @pdev:               PCI device structure
7282 * @id:                 PCI ids of supported hotplugged adapter
7283 */
7284static int megasas_probe_one(struct pci_dev *pdev,
7285                             const struct pci_device_id *id)
7286{
7287        int rval, pos;
7288        struct Scsi_Host *host;
7289        struct megasas_instance *instance;
7290        u16 control = 0;
7291
7292        switch (pdev->device) {
7293        case PCI_DEVICE_ID_LSI_AERO_10E0:
7294        case PCI_DEVICE_ID_LSI_AERO_10E3:
7295        case PCI_DEVICE_ID_LSI_AERO_10E4:
7296        case PCI_DEVICE_ID_LSI_AERO_10E7:
7297                dev_err(&pdev->dev, "Adapter is in non secure mode\n");
7298                return 1;
7299        case PCI_DEVICE_ID_LSI_AERO_10E1:
7300        case PCI_DEVICE_ID_LSI_AERO_10E5:
7301                dev_info(&pdev->dev, "Adapter is in configurable secure mode\n");
7302                break;
7303        }
7304
7305        /* Reset MSI-X in the kdump kernel */
7306        if (reset_devices) {
7307                pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
7308                if (pos) {
7309                        pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS,
7310                                             &control);
7311                        if (control & PCI_MSIX_FLAGS_ENABLE) {
7312                                dev_info(&pdev->dev, "resetting MSI-X\n");
7313                                pci_write_config_word(pdev,
7314                                                      pos + PCI_MSIX_FLAGS,
7315                                                      control &
7316                                                      ~PCI_MSIX_FLAGS_ENABLE);
7317                        }
7318                }
7319        }
7320
7321        /*
7322         * PCI prepping: enable device set bus mastering and dma mask
7323         */
7324        rval = pci_enable_device_mem(pdev);
7325
7326        if (rval) {
7327                return rval;
7328        }
7329
7330        pci_set_master(pdev);
7331
7332        host = scsi_host_alloc(&megasas_template,
7333                               sizeof(struct megasas_instance));
7334
7335        if (!host) {
7336                dev_printk(KERN_DEBUG, &pdev->dev, "scsi_host_alloc failed\n");
7337                goto fail_alloc_instance;
7338        }
7339
7340        instance = (struct megasas_instance *)host->hostdata;
7341        memset(instance, 0, sizeof(*instance));
7342        atomic_set(&instance->fw_reset_no_pci_access, 0);
7343
7344        /*
7345         * Initialize PCI related and misc parameters
7346         */
7347        instance->pdev = pdev;
7348        instance->host = host;
7349        instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
7350        instance->init_id = MEGASAS_DEFAULT_INIT_ID;
7351
7352        megasas_set_adapter_type(instance);
7353
7354        /*
7355         * Initialize MFI Firmware
7356         */
7357        if (megasas_init_fw(instance))
7358                goto fail_init_mfi;
7359
7360        if (instance->requestorId) {
7361                if (instance->PlasmaFW111) {
7362                        instance->vf_affiliation_111 =
7363                                dma_alloc_coherent(&pdev->dev,
7364                                        sizeof(struct MR_LD_VF_AFFILIATION_111),
7365                                        &instance->vf_affiliation_111_h,
7366                                        GFP_KERNEL);
7367                        if (!instance->vf_affiliation_111)
7368                                dev_warn(&pdev->dev, "Can't allocate "
7369                                       "memory for VF affiliation buffer\n");
7370                } else {
7371                        instance->vf_affiliation =
7372                                dma_alloc_coherent(&pdev->dev,
7373                                        (MAX_LOGICAL_DRIVES + 1) *
7374                                        sizeof(struct MR_LD_VF_AFFILIATION),
7375                                        &instance->vf_affiliation_h,
7376                                        GFP_KERNEL);
7377                        if (!instance->vf_affiliation)
7378                                dev_warn(&pdev->dev, "Can't allocate "
7379                                       "memory for VF affiliation buffer\n");
7380                }
7381        }
7382
7383        /*
7384         * Store instance in PCI softstate
7385         */
7386        pci_set_drvdata(pdev, instance);
7387
7388        /*
7389         * Add this controller to megasas_mgmt_info structure so that it
7390         * can be exported to management applications
7391         */
7392        megasas_mgmt_info.count++;
7393        megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
7394        megasas_mgmt_info.max_index++;
7395
7396        /*
7397         * Register with SCSI mid-layer
7398         */
7399        if (megasas_io_attach(instance))
7400                goto fail_io_attach;
7401
7402        instance->unload = 0;
7403        /*
7404         * Trigger SCSI to scan our drives
7405         */
7406        if (!instance->enable_fw_dev_list ||
7407            (instance->host_device_list_buf->count > 0))
7408                scsi_scan_host(host);
7409
7410        /*
7411         * Initiate AEN (Asynchronous Event Notification)
7412         */
7413        if (megasas_start_aen(instance)) {
7414                dev_printk(KERN_DEBUG, &pdev->dev, "start aen failed\n");
7415                goto fail_start_aen;
7416        }
7417
7418        megasas_setup_debugfs(instance);
7419
7420        /* Get current SR-IOV LD/VF affiliation */
7421        if (instance->requestorId)
7422                megasas_get_ld_vf_affiliation(instance, 1);
7423
7424        return 0;
7425
7426fail_start_aen:
7427fail_io_attach:
7428        megasas_mgmt_info.count--;
7429        megasas_mgmt_info.max_index--;
7430        megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
7431
7432        instance->instancet->disable_intr(instance);
7433        megasas_destroy_irqs(instance);
7434
7435        if (instance->adapter_type != MFI_SERIES)
7436                megasas_release_fusion(instance);
7437        else
7438                megasas_release_mfi(instance);
7439        if (instance->msix_vectors)
7440                pci_free_irq_vectors(instance->pdev);
7441fail_init_mfi:
7442        scsi_host_put(host);
7443fail_alloc_instance:
7444        pci_disable_device(pdev);
7445
7446        return -ENODEV;
7447}
7448
7449/**
7450 * megasas_flush_cache -        Requests FW to flush all its caches
7451 * @instance:                   Adapter soft state
7452 */
7453static void megasas_flush_cache(struct megasas_instance *instance)
7454{
7455        struct megasas_cmd *cmd;
7456        struct megasas_dcmd_frame *dcmd;
7457
7458        if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
7459                return;
7460
7461        cmd = megasas_get_cmd(instance);
7462
7463        if (!cmd)
7464                return;
7465
7466        dcmd = &cmd->frame->dcmd;
7467
7468        memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
7469
7470        dcmd->cmd = MFI_CMD_DCMD;
7471        dcmd->cmd_status = 0x0;
7472        dcmd->sge_count = 0;
7473        dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
7474        dcmd->timeout = 0;
7475        dcmd->pad_0 = 0;
7476        dcmd->data_xfer_len = 0;
7477        dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH);
7478        dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
7479
7480        if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
7481                        != DCMD_SUCCESS) {
7482                dev_err(&instance->pdev->dev,
7483                        "return from %s %d\n", __func__, __LINE__);
7484                return;
7485        }
7486
7487        megasas_return_cmd(instance, cmd);
7488}
7489
7490/**
7491 * megasas_shutdown_controller -        Instructs FW to shutdown the controller
7492 * @instance:                           Adapter soft state
7493 * @opcode:                             Shutdown/Hibernate
7494 */
7495static void megasas_shutdown_controller(struct megasas_instance *instance,
7496                                        u32 opcode)
7497{
7498        struct megasas_cmd *cmd;
7499        struct megasas_dcmd_frame *dcmd;
7500
7501        if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
7502                return;
7503
7504        cmd = megasas_get_cmd(instance);
7505
7506        if (!cmd)
7507                return;
7508
7509        if (instance->aen_cmd)
7510                megasas_issue_blocked_abort_cmd(instance,
7511                        instance->aen_cmd, MFI_IO_TIMEOUT_SECS);
7512        if (instance->map_update_cmd)
7513                megasas_issue_blocked_abort_cmd(instance,
7514                        instance->map_update_cmd, MFI_IO_TIMEOUT_SECS);
7515        if (instance->jbod_seq_cmd)
7516                megasas_issue_blocked_abort_cmd(instance,
7517                        instance->jbod_seq_cmd, MFI_IO_TIMEOUT_SECS);
7518
7519        dcmd = &cmd->frame->dcmd;
7520
7521        memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
7522
7523        dcmd->cmd = MFI_CMD_DCMD;
7524        dcmd->cmd_status = 0x0;
7525        dcmd->sge_count = 0;
7526        dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
7527        dcmd->timeout = 0;
7528        dcmd->pad_0 = 0;
7529        dcmd->data_xfer_len = 0;
7530        dcmd->opcode = cpu_to_le32(opcode);
7531
7532        if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
7533                        != DCMD_SUCCESS) {
7534                dev_err(&instance->pdev->dev,
7535                        "return from %s %d\n", __func__, __LINE__);
7536                return;
7537        }
7538
7539        megasas_return_cmd(instance, cmd);
7540}
7541
7542#ifdef CONFIG_PM
7543/**
7544 * megasas_suspend -    driver suspend entry point
7545 * @pdev:               PCI device structure
7546 * @state:              PCI power state to suspend routine
7547 */
7548static int
7549megasas_suspend(struct pci_dev *pdev, pm_message_t state)
7550{
7551        struct megasas_instance *instance;
7552
7553        instance = pci_get_drvdata(pdev);
7554
7555        if (!instance)
7556                return 0;
7557
7558        instance->unload = 1;
7559
7560        dev_info(&pdev->dev, "%s is called\n", __func__);
7561
7562        /* Shutdown SR-IOV heartbeat timer */
7563        if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7564                del_timer_sync(&instance->sriov_heartbeat_timer);
7565
7566        /* Stop the FW fault detection watchdog */
7567        if (instance->adapter_type != MFI_SERIES)
7568                megasas_fusion_stop_watchdog(instance);
7569
7570        megasas_flush_cache(instance);
7571        megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
7572
7573        /* cancel the delayed work if this work still in queue */
7574        if (instance->ev != NULL) {
7575                struct megasas_aen_event *ev = instance->ev;
7576                cancel_delayed_work_sync(&ev->hotplug_work);
7577                instance->ev = NULL;
7578        }
7579
7580        tasklet_kill(&instance->isr_tasklet);
7581
7582        pci_set_drvdata(instance->pdev, instance);
7583        instance->instancet->disable_intr(instance);
7584
7585        megasas_destroy_irqs(instance);
7586
7587        if (instance->msix_vectors)
7588                pci_free_irq_vectors(instance->pdev);
7589
7590        pci_save_state(pdev);
7591        pci_disable_device(pdev);
7592
7593        pci_set_power_state(pdev, pci_choose_state(pdev, state));
7594
7595        return 0;
7596}
7597
7598/**
7599 * megasas_resume-      driver resume entry point
7600 * @pdev:               PCI device structure
7601 */
7602static int
7603megasas_resume(struct pci_dev *pdev)
7604{
7605        int rval;
7606        struct Scsi_Host *host;
7607        struct megasas_instance *instance;
7608        u32 status_reg;
7609
7610        instance = pci_get_drvdata(pdev);
7611
7612        if (!instance)
7613                return 0;
7614
7615        host = instance->host;
7616        pci_set_power_state(pdev, PCI_D0);
7617        pci_enable_wake(pdev, PCI_D0, 0);
7618        pci_restore_state(pdev);
7619
7620        dev_info(&pdev->dev, "%s is called\n", __func__);
7621        /*
7622         * PCI prepping: enable device set bus mastering and dma mask
7623         */
7624        rval = pci_enable_device_mem(pdev);
7625
7626        if (rval) {
7627                dev_err(&pdev->dev, "Enable device failed\n");
7628                return rval;
7629        }
7630
7631        pci_set_master(pdev);
7632
7633        /*
7634         * We expect the FW state to be READY
7635         */
7636
7637        if (megasas_transition_to_ready(instance, 0)) {
7638                dev_info(&instance->pdev->dev,
7639                         "Failed to transition controller to ready from %s!\n",
7640                         __func__);
7641                if (instance->adapter_type != MFI_SERIES) {
7642                        status_reg =
7643                                instance->instancet->read_fw_status_reg(instance);
7644                        if (!(status_reg & MFI_RESET_ADAPTER) ||
7645                                ((megasas_adp_reset_wait_for_ready
7646                                (instance, true, 0)) == FAILED))
7647                                goto fail_ready_state;
7648                } else {
7649                        atomic_set(&instance->fw_reset_no_pci_access, 1);
7650                        instance->instancet->adp_reset
7651                                (instance, instance->reg_set);
7652                        atomic_set(&instance->fw_reset_no_pci_access, 0);
7653
7654                        /* waiting for about 30 seconds before retry */
7655                        ssleep(30);
7656
7657                        if (megasas_transition_to_ready(instance, 0))
7658                                goto fail_ready_state;
7659                }
7660
7661                dev_info(&instance->pdev->dev,
7662                         "FW restarted successfully from %s!\n",
7663                         __func__);
7664        }
7665        if (megasas_set_dma_mask(instance))
7666                goto fail_set_dma_mask;
7667
7668        /*
7669         * Initialize MFI Firmware
7670         */
7671
7672        atomic_set(&instance->fw_outstanding, 0);
7673        atomic_set(&instance->ldio_outstanding, 0);
7674
7675        /* Now re-enable MSI-X */
7676        if (instance->msix_vectors)
7677                megasas_alloc_irq_vectors(instance);
7678
7679        if (!instance->msix_vectors) {
7680                rval = pci_alloc_irq_vectors(instance->pdev, 1, 1,
7681                                             PCI_IRQ_LEGACY);
7682                if (rval < 0)
7683                        goto fail_reenable_msix;
7684        }
7685
7686        megasas_setup_reply_map(instance);
7687
7688        if (instance->adapter_type != MFI_SERIES) {
7689                megasas_reset_reply_desc(instance);
7690                if (megasas_ioc_init_fusion(instance)) {
7691                        megasas_free_cmds(instance);
7692                        megasas_free_cmds_fusion(instance);
7693                        goto fail_init_mfi;
7694                }
7695                if (!megasas_get_map_info(instance))
7696                        megasas_sync_map_info(instance);
7697        } else {
7698                *instance->producer = 0;
7699                *instance->consumer = 0;
7700                if (megasas_issue_init_mfi(instance))
7701                        goto fail_init_mfi;
7702        }
7703
7704        if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS)
7705                goto fail_init_mfi;
7706
7707        tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
7708                     (unsigned long)instance);
7709
7710        if (instance->msix_vectors ?
7711                        megasas_setup_irqs_msix(instance, 0) :
7712                        megasas_setup_irqs_ioapic(instance))
7713                goto fail_init_mfi;
7714
7715        if (instance->adapter_type != MFI_SERIES)
7716                megasas_setup_irq_poll(instance);
7717
7718        /* Re-launch SR-IOV heartbeat timer */
7719        if (instance->requestorId) {
7720                if (!megasas_sriov_start_heartbeat(instance, 0))
7721                        megasas_start_timer(instance);
7722                else {
7723                        instance->skip_heartbeat_timer_del = 1;
7724                        goto fail_init_mfi;
7725                }
7726        }
7727
7728        instance->instancet->enable_intr(instance);
7729        megasas_setup_jbod_map(instance);
7730        instance->unload = 0;
7731
7732        /*
7733         * Initiate AEN (Asynchronous Event Notification)
7734         */
7735        if (megasas_start_aen(instance))
7736                dev_err(&instance->pdev->dev, "Start AEN failed\n");
7737
7738        /* Re-launch FW fault watchdog */
7739        if (instance->adapter_type != MFI_SERIES)
7740                if (megasas_fusion_start_watchdog(instance) != SUCCESS)
7741                        goto fail_start_watchdog;
7742
7743        return 0;
7744
7745fail_start_watchdog:
7746        if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7747                del_timer_sync(&instance->sriov_heartbeat_timer);
7748fail_init_mfi:
7749        megasas_free_ctrl_dma_buffers(instance);
7750        megasas_free_ctrl_mem(instance);
7751        scsi_host_put(host);
7752
7753fail_reenable_msix:
7754fail_set_dma_mask:
7755fail_ready_state:
7756
7757        pci_disable_device(pdev);
7758
7759        return -ENODEV;
7760}
7761#else
7762#define megasas_suspend NULL
7763#define megasas_resume  NULL
7764#endif
7765
7766static inline int
7767megasas_wait_for_adapter_operational(struct megasas_instance *instance)
7768{
7769        int wait_time = MEGASAS_RESET_WAIT_TIME * 2;
7770        int i;
7771        u8 adp_state;
7772
7773        for (i = 0; i < wait_time; i++) {
7774                adp_state = atomic_read(&instance->adprecovery);
7775                if ((adp_state == MEGASAS_HBA_OPERATIONAL) ||
7776                    (adp_state == MEGASAS_HW_CRITICAL_ERROR))
7777                        break;
7778
7779                if (!(i % MEGASAS_RESET_NOTICE_INTERVAL))
7780                        dev_notice(&instance->pdev->dev, "waiting for controller reset to finish\n");
7781
7782                msleep(1000);
7783        }
7784
7785        if (adp_state != MEGASAS_HBA_OPERATIONAL) {
7786                dev_info(&instance->pdev->dev,
7787                         "%s HBA failed to become operational, adp_state %d\n",
7788                         __func__, adp_state);
7789                return 1;
7790        }
7791
7792        return 0;
7793}
7794
7795/**
7796 * megasas_detach_one - PCI hot"un"plug entry point
7797 * @pdev:               PCI device structure
7798 */
7799static void megasas_detach_one(struct pci_dev *pdev)
7800{
7801        int i;
7802        struct Scsi_Host *host;
7803        struct megasas_instance *instance;
7804        struct fusion_context *fusion;
7805        u32 pd_seq_map_sz;
7806
7807        instance = pci_get_drvdata(pdev);
7808
7809        if (!instance)
7810                return;
7811
7812        host = instance->host;
7813        fusion = instance->ctrl_context;
7814
7815        /* Shutdown SR-IOV heartbeat timer */
7816        if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7817                del_timer_sync(&instance->sriov_heartbeat_timer);
7818
7819        /* Stop the FW fault detection watchdog */
7820        if (instance->adapter_type != MFI_SERIES)
7821                megasas_fusion_stop_watchdog(instance);
7822
7823        if (instance->fw_crash_state != UNAVAILABLE)
7824                megasas_free_host_crash_buffer(instance);
7825        scsi_remove_host(instance->host);
7826        instance->unload = 1;
7827
7828        if (megasas_wait_for_adapter_operational(instance))
7829                goto skip_firing_dcmds;
7830
7831        megasas_flush_cache(instance);
7832        megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
7833
7834skip_firing_dcmds:
7835        /* cancel the delayed work if this work still in queue*/
7836        if (instance->ev != NULL) {
7837                struct megasas_aen_event *ev = instance->ev;
7838                cancel_delayed_work_sync(&ev->hotplug_work);
7839                instance->ev = NULL;
7840        }
7841
7842        /* cancel all wait events */
7843        wake_up_all(&instance->int_cmd_wait_q);
7844
7845        tasklet_kill(&instance->isr_tasklet);
7846
7847        /*
7848         * Take the instance off the instance array. Note that we will not
7849         * decrement the max_index. We let this array be sparse array
7850         */
7851        for (i = 0; i < megasas_mgmt_info.max_index; i++) {
7852                if (megasas_mgmt_info.instance[i] == instance) {
7853                        megasas_mgmt_info.count--;
7854                        megasas_mgmt_info.instance[i] = NULL;
7855
7856                        break;
7857                }
7858        }
7859
7860        instance->instancet->disable_intr(instance);
7861
7862        megasas_destroy_irqs(instance);
7863
7864        if (instance->msix_vectors)
7865                pci_free_irq_vectors(instance->pdev);
7866
7867        if (instance->adapter_type >= VENTURA_SERIES) {
7868                for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i)
7869                        kfree(fusion->stream_detect_by_ld[i]);
7870                kfree(fusion->stream_detect_by_ld);
7871                fusion->stream_detect_by_ld = NULL;
7872        }
7873
7874
7875        if (instance->adapter_type != MFI_SERIES) {
7876                megasas_release_fusion(instance);
7877                        pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
7878                                (sizeof(struct MR_PD_CFG_SEQ) *
7879                                        (MAX_PHYSICAL_DEVICES - 1));
7880                for (i = 0; i < 2 ; i++) {
7881                        if (fusion->ld_map[i])
7882                                dma_free_coherent(&instance->pdev->dev,
7883                                                  fusion->max_map_sz,
7884                                                  fusion->ld_map[i],
7885                                                  fusion->ld_map_phys[i]);
7886                        if (fusion->ld_drv_map[i]) {
7887                                if (is_vmalloc_addr(fusion->ld_drv_map[i]))
7888                                        vfree(fusion->ld_drv_map[i]);
7889                                else
7890                                        free_pages((ulong)fusion->ld_drv_map[i],
7891                                                   fusion->drv_map_pages);
7892                        }
7893
7894                        if (fusion->pd_seq_sync[i])
7895                                dma_free_coherent(&instance->pdev->dev,
7896                                        pd_seq_map_sz,
7897                                        fusion->pd_seq_sync[i],
7898                                        fusion->pd_seq_phys[i]);
7899                }
7900        } else {
7901                megasas_release_mfi(instance);
7902        }
7903
7904        if (instance->vf_affiliation)
7905                dma_free_coherent(&pdev->dev, (MAX_LOGICAL_DRIVES + 1) *
7906                                    sizeof(struct MR_LD_VF_AFFILIATION),
7907                                    instance->vf_affiliation,
7908                                    instance->vf_affiliation_h);
7909
7910        if (instance->vf_affiliation_111)
7911                dma_free_coherent(&pdev->dev,
7912                                    sizeof(struct MR_LD_VF_AFFILIATION_111),
7913                                    instance->vf_affiliation_111,
7914                                    instance->vf_affiliation_111_h);
7915
7916        if (instance->hb_host_mem)
7917                dma_free_coherent(&pdev->dev, sizeof(struct MR_CTRL_HB_HOST_MEM),
7918                                    instance->hb_host_mem,
7919                                    instance->hb_host_mem_h);
7920
7921        megasas_free_ctrl_dma_buffers(instance);
7922
7923        megasas_free_ctrl_mem(instance);
7924
7925        megasas_destroy_debugfs(instance);
7926
7927        scsi_host_put(host);
7928
7929        pci_disable_device(pdev);
7930}
7931
7932/**
7933 * megasas_shutdown -   Shutdown entry point
7934 * @device:             Generic device structure
7935 */
7936static void megasas_shutdown(struct pci_dev *pdev)
7937{
7938        struct megasas_instance *instance = pci_get_drvdata(pdev);
7939
7940        if (!instance)
7941                return;
7942
7943        instance->unload = 1;
7944
7945        if (megasas_wait_for_adapter_operational(instance))
7946                goto skip_firing_dcmds;
7947
7948        megasas_flush_cache(instance);
7949        megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
7950
7951skip_firing_dcmds:
7952        instance->instancet->disable_intr(instance);
7953        megasas_destroy_irqs(instance);
7954
7955        if (instance->msix_vectors)
7956                pci_free_irq_vectors(instance->pdev);
7957}
7958
7959/**
7960 * megasas_mgmt_open -  char node "open" entry point
7961 */
7962static int megasas_mgmt_open(struct inode *inode, struct file *filep)
7963{
7964        /*
7965         * Allow only those users with admin rights
7966         */
7967        if (!capable(CAP_SYS_ADMIN))
7968                return -EACCES;
7969
7970        return 0;
7971}
7972
7973/**
7974 * megasas_mgmt_fasync -        Async notifier registration from applications
7975 *
7976 * This function adds the calling process to a driver global queue. When an
7977 * event occurs, SIGIO will be sent to all processes in this queue.
7978 */
7979static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
7980{
7981        int rc;
7982
7983        mutex_lock(&megasas_async_queue_mutex);
7984
7985        rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
7986
7987        mutex_unlock(&megasas_async_queue_mutex);
7988
7989        if (rc >= 0) {
7990                /* For sanity check when we get ioctl */
7991                filep->private_data = filep;
7992                return 0;
7993        }
7994
7995        printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
7996
7997        return rc;
7998}
7999
8000/**
8001 * megasas_mgmt_poll -  char node "poll" entry point
8002 * */
8003static __poll_t megasas_mgmt_poll(struct file *file, poll_table *wait)
8004{
8005        __poll_t mask;
8006        unsigned long flags;
8007
8008        poll_wait(file, &megasas_poll_wait, wait);
8009        spin_lock_irqsave(&poll_aen_lock, flags);
8010        if (megasas_poll_wait_aen)
8011                mask = (EPOLLIN | EPOLLRDNORM);
8012        else
8013                mask = 0;
8014        megasas_poll_wait_aen = 0;
8015        spin_unlock_irqrestore(&poll_aen_lock, flags);
8016        return mask;
8017}
8018
8019/*
8020 * megasas_set_crash_dump_params_ioctl:
8021 *              Send CRASH_DUMP_MODE DCMD to all controllers
8022 * @cmd:        MFI command frame
8023 */
8024
8025static int megasas_set_crash_dump_params_ioctl(struct megasas_cmd *cmd)
8026{
8027        struct megasas_instance *local_instance;
8028        int i, error = 0;
8029        int crash_support;
8030
8031        crash_support = cmd->frame->dcmd.mbox.w[0];
8032
8033        for (i = 0; i < megasas_mgmt_info.max_index; i++) {
8034                local_instance = megasas_mgmt_info.instance[i];
8035                if (local_instance && local_instance->crash_dump_drv_support) {
8036                        if ((atomic_read(&local_instance->adprecovery) ==
8037                                MEGASAS_HBA_OPERATIONAL) &&
8038                                !megasas_set_crash_dump_params(local_instance,
8039                                        crash_support)) {
8040                                local_instance->crash_dump_app_support =
8041                                        crash_support;
8042                                dev_info(&local_instance->pdev->dev,
8043                                        "Application firmware crash "
8044                                        "dump mode set success\n");
8045                                error = 0;
8046                        } else {
8047                                dev_info(&local_instance->pdev->dev,
8048                                        "Application firmware crash "
8049                                        "dump mode set failed\n");
8050                                error = -1;
8051                        }
8052                }
8053        }
8054        return error;
8055}
8056
8057/**
8058 * megasas_mgmt_fw_ioctl -      Issues management ioctls to FW
8059 * @instance:                   Adapter soft state
8060 * @argp:                       User's ioctl packet
8061 */
8062static int
8063megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
8064                      struct megasas_iocpacket __user * user_ioc,
8065                      struct megasas_iocpacket *ioc)
8066{
8067        struct megasas_sge64 *kern_sge64 = NULL;
8068        struct megasas_sge32 *kern_sge32 = NULL;
8069        struct megasas_cmd *cmd;
8070        void *kbuff_arr[MAX_IOCTL_SGE];
8071        dma_addr_t buf_handle = 0;
8072        int error = 0, i;
8073        void *sense = NULL;
8074        dma_addr_t sense_handle;
8075        unsigned long *sense_ptr;
8076        u32 opcode = 0;
8077        int ret = DCMD_SUCCESS;
8078
8079        memset(kbuff_arr, 0, sizeof(kbuff_arr));
8080
8081        if (ioc->sge_count > MAX_IOCTL_SGE) {
8082                dev_printk(KERN_DEBUG, &instance->pdev->dev, "SGE count [%d] >  max limit [%d]\n",
8083                       ioc->sge_count, MAX_IOCTL_SGE);
8084                return -EINVAL;
8085        }
8086
8087        if ((ioc->frame.hdr.cmd >= MFI_CMD_OP_COUNT) ||
8088            ((ioc->frame.hdr.cmd == MFI_CMD_NVME) &&
8089            !instance->support_nvme_passthru) ||
8090            ((ioc->frame.hdr.cmd == MFI_CMD_TOOLBOX) &&
8091            !instance->support_pci_lane_margining)) {
8092                dev_err(&instance->pdev->dev,
8093                        "Received invalid ioctl command 0x%x\n",
8094                        ioc->frame.hdr.cmd);
8095                return -ENOTSUPP;
8096        }
8097
8098        cmd = megasas_get_cmd(instance);
8099        if (!cmd) {
8100                dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a cmd packet\n");
8101                return -ENOMEM;
8102        }
8103
8104        /*
8105         * User's IOCTL packet has 2 frames (maximum). Copy those two
8106         * frames into our cmd's frames. cmd->frame's context will get
8107         * overwritten when we copy from user's frames. So set that value
8108         * alone separately
8109         */
8110        memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
8111        cmd->frame->hdr.context = cpu_to_le32(cmd->index);
8112        cmd->frame->hdr.pad_0 = 0;
8113
8114        cmd->frame->hdr.flags &= (~MFI_FRAME_IEEE);
8115
8116        if (instance->consistent_mask_64bit)
8117                cmd->frame->hdr.flags |= cpu_to_le16((MFI_FRAME_SGL64 |
8118                                       MFI_FRAME_SENSE64));
8119        else
8120                cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_SGL64 |
8121                                               MFI_FRAME_SENSE64));
8122
8123        if (cmd->frame->hdr.cmd == MFI_CMD_DCMD)
8124                opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
8125
8126        if (opcode == MR_DCMD_CTRL_SHUTDOWN) {
8127                mutex_lock(&instance->reset_mutex);
8128                if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS) {
8129                        megasas_return_cmd(instance, cmd);
8130                        mutex_unlock(&instance->reset_mutex);
8131                        return -1;
8132                }
8133                mutex_unlock(&instance->reset_mutex);
8134        }
8135
8136        if (opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) {
8137                error = megasas_set_crash_dump_params_ioctl(cmd);
8138                megasas_return_cmd(instance, cmd);
8139                return error;
8140        }
8141
8142        /*
8143         * The management interface between applications and the fw uses
8144         * MFI frames. E.g, RAID configuration changes, LD property changes
8145         * etc are accomplishes through different kinds of MFI frames. The
8146         * driver needs to care only about substituting user buffers with
8147         * kernel buffers in SGLs. The location of SGL is embedded in the
8148         * struct iocpacket itself.
8149         */
8150        if (instance->consistent_mask_64bit)
8151                kern_sge64 = (struct megasas_sge64 *)
8152                        ((unsigned long)cmd->frame + ioc->sgl_off);
8153        else
8154                kern_sge32 = (struct megasas_sge32 *)
8155                        ((unsigned long)cmd->frame + ioc->sgl_off);
8156
8157        /*
8158         * For each user buffer, create a mirror buffer and copy in
8159         */
8160        for (i = 0; i < ioc->sge_count; i++) {
8161                if (!ioc->sgl[i].iov_len)
8162                        continue;
8163
8164                kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
8165                                                    ioc->sgl[i].iov_len,
8166                                                    &buf_handle, GFP_KERNEL);
8167                if (!kbuff_arr[i]) {
8168                        dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc "
8169                               "kernel SGL buffer for IOCTL\n");
8170                        error = -ENOMEM;
8171                        goto out;
8172                }
8173
8174                /*
8175                 * We don't change the dma_coherent_mask, so
8176                 * dma_alloc_coherent only returns 32bit addresses
8177                 */
8178                if (instance->consistent_mask_64bit) {
8179                        kern_sge64[i].phys_addr = cpu_to_le64(buf_handle);
8180                        kern_sge64[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
8181                } else {
8182                        kern_sge32[i].phys_addr = cpu_to_le32(buf_handle);
8183                        kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
8184                }
8185
8186                /*
8187                 * We created a kernel buffer corresponding to the
8188                 * user buffer. Now copy in from the user buffer
8189                 */
8190                if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
8191                                   (u32) (ioc->sgl[i].iov_len))) {
8192                        error = -EFAULT;
8193                        goto out;
8194                }
8195        }
8196
8197        if (ioc->sense_len) {
8198                sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
8199                                             &sense_handle, GFP_KERNEL);
8200                if (!sense) {
8201                        error = -ENOMEM;
8202                        goto out;
8203                }
8204
8205                sense_ptr =
8206                (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off);
8207                if (instance->consistent_mask_64bit)
8208                        *sense_ptr = cpu_to_le64(sense_handle);
8209                else
8210                        *sense_ptr = cpu_to_le32(sense_handle);
8211        }
8212
8213        /*
8214         * Set the sync_cmd flag so that the ISR knows not to complete this
8215         * cmd to the SCSI mid-layer
8216         */
8217        cmd->sync_cmd = 1;
8218
8219        ret = megasas_issue_blocked_cmd(instance, cmd, 0);
8220        switch (ret) {
8221        case DCMD_INIT:
8222        case DCMD_BUSY:
8223                cmd->sync_cmd = 0;
8224                dev_err(&instance->pdev->dev,
8225                        "return -EBUSY from %s %d cmd 0x%x opcode 0x%x cmd->cmd_status_drv 0x%x\n",
8226                         __func__, __LINE__, cmd->frame->hdr.cmd, opcode,
8227                         cmd->cmd_status_drv);
8228                error = -EBUSY;
8229                goto out;
8230        }
8231
8232        cmd->sync_cmd = 0;
8233
8234        if (instance->unload == 1) {
8235                dev_info(&instance->pdev->dev, "Driver unload is in progress "
8236                        "don't submit data to application\n");
8237                goto out;
8238        }
8239        /*
8240         * copy out the kernel buffers to user buffers
8241         */
8242        for (i = 0; i < ioc->sge_count; i++) {
8243                if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
8244                                 ioc->sgl[i].iov_len)) {
8245                        error = -EFAULT;
8246                        goto out;
8247                }
8248        }
8249
8250        /*
8251         * copy out the sense
8252         */
8253        if (ioc->sense_len) {
8254                /*
8255                 * sense_ptr points to the location that has the user
8256                 * sense buffer address
8257                 */
8258                sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw +
8259                                ioc->sense_off);
8260
8261                if (copy_to_user((void __user *)((unsigned long)
8262                                 get_unaligned((unsigned long *)sense_ptr)),
8263                                 sense, ioc->sense_len)) {
8264                        dev_err(&instance->pdev->dev, "Failed to copy out to user "
8265                                        "sense data\n");
8266                        error = -EFAULT;
8267                        goto out;
8268                }
8269        }
8270
8271        /*
8272         * copy the status codes returned by the fw
8273         */
8274        if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
8275                         &cmd->frame->hdr.cmd_status, sizeof(u8))) {
8276                dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error copying out cmd_status\n");
8277                error = -EFAULT;
8278        }
8279
8280out:
8281        if (sense) {
8282                dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
8283                                    sense, sense_handle);
8284        }
8285
8286        for (i = 0; i < ioc->sge_count; i++) {
8287                if (kbuff_arr[i]) {
8288                        if (instance->consistent_mask_64bit)
8289                                dma_free_coherent(&instance->pdev->dev,
8290                                        le32_to_cpu(kern_sge64[i].length),
8291                                        kbuff_arr[i],
8292                                        le64_to_cpu(kern_sge64[i].phys_addr));
8293                        else
8294                                dma_free_coherent(&instance->pdev->dev,
8295                                        le32_to_cpu(kern_sge32[i].length),
8296                                        kbuff_arr[i],
8297                                        le32_to_cpu(kern_sge32[i].phys_addr));
8298                        kbuff_arr[i] = NULL;
8299                }
8300        }
8301
8302        megasas_return_cmd(instance, cmd);
8303        return error;
8304}
8305
8306static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
8307{
8308        struct megasas_iocpacket __user *user_ioc =
8309            (struct megasas_iocpacket __user *)arg;
8310        struct megasas_iocpacket *ioc;
8311        struct megasas_instance *instance;
8312        int error;
8313
8314        ioc = memdup_user(user_ioc, sizeof(*ioc));
8315        if (IS_ERR(ioc))
8316                return PTR_ERR(ioc);
8317
8318        instance = megasas_lookup_instance(ioc->host_no);
8319        if (!instance) {
8320                error = -ENODEV;
8321                goto out_kfree_ioc;
8322        }
8323
8324        /* Block ioctls in VF mode */
8325        if (instance->requestorId && !allow_vf_ioctls) {
8326                error = -ENODEV;
8327                goto out_kfree_ioc;
8328        }
8329
8330        if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
8331                dev_err(&instance->pdev->dev, "Controller in crit error\n");
8332                error = -ENODEV;
8333                goto out_kfree_ioc;
8334        }
8335
8336        if (instance->unload == 1) {
8337                error = -ENODEV;
8338                goto out_kfree_ioc;
8339        }
8340
8341        if (down_interruptible(&instance->ioctl_sem)) {
8342                error = -ERESTARTSYS;
8343                goto out_kfree_ioc;
8344        }
8345
8346        if  (megasas_wait_for_adapter_operational(instance)) {
8347                error = -ENODEV;
8348                goto out_up;
8349        }
8350
8351        error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
8352out_up:
8353        up(&instance->ioctl_sem);
8354
8355out_kfree_ioc:
8356        kfree(ioc);
8357        return error;
8358}
8359
8360static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
8361{
8362        struct megasas_instance *instance;
8363        struct megasas_aen aen;
8364        int error;
8365
8366        if (file->private_data != file) {
8367                printk(KERN_DEBUG "megasas: fasync_helper was not "
8368                       "called first\n");
8369                return -EINVAL;
8370        }
8371
8372        if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
8373                return -EFAULT;
8374
8375        instance = megasas_lookup_instance(aen.host_no);
8376
8377        if (!instance)
8378                return -ENODEV;
8379
8380        if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
8381                return -ENODEV;
8382        }
8383
8384        if (instance->unload == 1) {
8385                return -ENODEV;
8386        }
8387
8388        if  (megasas_wait_for_adapter_operational(instance))
8389                return -ENODEV;
8390
8391        mutex_lock(&instance->reset_mutex);
8392        error = megasas_register_aen(instance, aen.seq_num,
8393                                     aen.class_locale_word);
8394        mutex_unlock(&instance->reset_mutex);
8395        return error;
8396}
8397
8398/**
8399 * megasas_mgmt_ioctl - char node ioctl entry point
8400 */
8401static long
8402megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
8403{
8404        switch (cmd) {
8405        case MEGASAS_IOC_FIRMWARE:
8406                return megasas_mgmt_ioctl_fw(file, arg);
8407
8408        case MEGASAS_IOC_GET_AEN:
8409                return megasas_mgmt_ioctl_aen(file, arg);
8410        }
8411
8412        return -ENOTTY;
8413}
8414
8415#ifdef CONFIG_COMPAT
8416static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg)
8417{
8418        struct compat_megasas_iocpacket __user *cioc =
8419            (struct compat_megasas_iocpacket __user *)arg;
8420        struct megasas_iocpacket __user *ioc =
8421            compat_alloc_user_space(sizeof(struct megasas_iocpacket));
8422        int i;
8423        int error = 0;
8424        compat_uptr_t ptr;
8425        u32 local_sense_off;
8426        u32 local_sense_len;
8427        u32 user_sense_off;
8428
8429        if (clear_user(ioc, sizeof(*ioc)))
8430                return -EFAULT;
8431
8432        if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) ||
8433            copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) ||
8434            copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) ||
8435            copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) ||
8436            copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) ||
8437            copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32)))
8438                return -EFAULT;
8439
8440        /*
8441         * The sense_ptr is used in megasas_mgmt_fw_ioctl only when
8442         * sense_len is not null, so prepare the 64bit value under
8443         * the same condition.
8444         */
8445        if (get_user(local_sense_off, &ioc->sense_off) ||
8446                get_user(local_sense_len, &ioc->sense_len) ||
8447                get_user(user_sense_off, &cioc->sense_off))
8448                return -EFAULT;
8449
8450        if (local_sense_off != user_sense_off)
8451                return -EINVAL;
8452
8453        if (local_sense_len) {
8454                void __user **sense_ioc_ptr =
8455                        (void __user **)((u8 *)((unsigned long)&ioc->frame.raw) + local_sense_off);
8456                compat_uptr_t *sense_cioc_ptr =
8457                        (compat_uptr_t *)(((unsigned long)&cioc->frame.raw) + user_sense_off);
8458                if (get_user(ptr, sense_cioc_ptr) ||
8459                    put_user(compat_ptr(ptr), sense_ioc_ptr))
8460                        return -EFAULT;
8461        }
8462
8463        for (i = 0; i < MAX_IOCTL_SGE; i++) {
8464                if (get_user(ptr, &cioc->sgl[i].iov_base) ||
8465                    put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) ||
8466                    copy_in_user(&ioc->sgl[i].iov_len,
8467                                 &cioc->sgl[i].iov_len, sizeof(compat_size_t)))
8468                        return -EFAULT;
8469        }
8470
8471        error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc);
8472
8473        if (copy_in_user(&cioc->frame.hdr.cmd_status,
8474                         &ioc->frame.hdr.cmd_status, sizeof(u8))) {
8475                printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n");
8476                return -EFAULT;
8477        }
8478        return error;
8479}
8480
8481static long
8482megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
8483                          unsigned long arg)
8484{
8485        switch (cmd) {
8486        case MEGASAS_IOC_FIRMWARE32:
8487                return megasas_mgmt_compat_ioctl_fw(file, arg);
8488        case MEGASAS_IOC_GET_AEN:
8489                return megasas_mgmt_ioctl_aen(file, arg);
8490        }
8491
8492        return -ENOTTY;
8493}
8494#endif
8495
8496/*
8497 * File operations structure for management interface
8498 */
8499static const struct file_operations megasas_mgmt_fops = {
8500        .owner = THIS_MODULE,
8501        .open = megasas_mgmt_open,
8502        .fasync = megasas_mgmt_fasync,
8503        .unlocked_ioctl = megasas_mgmt_ioctl,
8504        .poll = megasas_mgmt_poll,
8505#ifdef CONFIG_COMPAT
8506        .compat_ioctl = megasas_mgmt_compat_ioctl,
8507#endif
8508        .llseek = noop_llseek,
8509};
8510
8511/*
8512 * PCI hotplug support registration structure
8513 */
8514static struct pci_driver megasas_pci_driver = {
8515
8516        .name = "megaraid_sas",
8517        .id_table = megasas_pci_table,
8518        .probe = megasas_probe_one,
8519        .remove = megasas_detach_one,
8520        .suspend = megasas_suspend,
8521        .resume = megasas_resume,
8522        .shutdown = megasas_shutdown,
8523};
8524
8525/*
8526 * Sysfs driver attributes
8527 */
8528static ssize_t version_show(struct device_driver *dd, char *buf)
8529{
8530        return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
8531                        MEGASAS_VERSION);
8532}
8533static DRIVER_ATTR_RO(version);
8534
8535static ssize_t release_date_show(struct device_driver *dd, char *buf)
8536{
8537        return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n",
8538                MEGASAS_RELDATE);
8539}
8540static DRIVER_ATTR_RO(release_date);
8541
8542static ssize_t support_poll_for_event_show(struct device_driver *dd, char *buf)
8543{
8544        return sprintf(buf, "%u\n", support_poll_for_event);
8545}
8546static DRIVER_ATTR_RO(support_poll_for_event);
8547
8548static ssize_t support_device_change_show(struct device_driver *dd, char *buf)
8549{
8550        return sprintf(buf, "%u\n", support_device_change);
8551}
8552static DRIVER_ATTR_RO(support_device_change);
8553
8554static ssize_t dbg_lvl_show(struct device_driver *dd, char *buf)
8555{
8556        return sprintf(buf, "%u\n", megasas_dbg_lvl);
8557}
8558
8559static ssize_t dbg_lvl_store(struct device_driver *dd, const char *buf,
8560                             size_t count)
8561{
8562        int retval = count;
8563
8564        if (sscanf(buf, "%u", &megasas_dbg_lvl) < 1) {
8565                printk(KERN_ERR "megasas: could not set dbg_lvl\n");
8566                retval = -EINVAL;
8567        }
8568        return retval;
8569}
8570static DRIVER_ATTR_RW(dbg_lvl);
8571
8572static ssize_t
8573support_nvme_encapsulation_show(struct device_driver *dd, char *buf)
8574{
8575        return sprintf(buf, "%u\n", support_nvme_encapsulation);
8576}
8577
8578static DRIVER_ATTR_RO(support_nvme_encapsulation);
8579
8580static ssize_t
8581support_pci_lane_margining_show(struct device_driver *dd, char *buf)
8582{
8583        return sprintf(buf, "%u\n", support_pci_lane_margining);
8584}
8585
8586static DRIVER_ATTR_RO(support_pci_lane_margining);
8587
8588static inline void megasas_remove_scsi_device(struct scsi_device *sdev)
8589{
8590        sdev_printk(KERN_INFO, sdev, "SCSI device is removed\n");
8591        scsi_remove_device(sdev);
8592        scsi_device_put(sdev);
8593}
8594
8595/**
8596 * megasas_update_device_list - Update the PD and LD device list from FW
8597 *                              after an AEN event notification
8598 * @instance:                   Adapter soft state
8599 * @event_type:                 Indicates type of event (PD or LD event)
8600 *
8601 * @return:                     Success or failure
8602 *
8603 * Issue DCMDs to Firmware to update the internal device list in driver.
8604 * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination
8605 * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list.
8606 */
8607static
8608int megasas_update_device_list(struct megasas_instance *instance,
8609                               int event_type)
8610{
8611        int dcmd_ret = DCMD_SUCCESS;
8612
8613        if (instance->enable_fw_dev_list) {
8614                dcmd_ret = megasas_host_device_list_query(instance, false);
8615                if (dcmd_ret != DCMD_SUCCESS)
8616                        goto out;
8617        } else {
8618                if (event_type & SCAN_PD_CHANNEL) {
8619                        dcmd_ret = megasas_get_pd_list(instance);
8620
8621                        if (dcmd_ret != DCMD_SUCCESS)
8622                                goto out;
8623                }
8624
8625                if (event_type & SCAN_VD_CHANNEL) {
8626                        if (!instance->requestorId ||
8627                            (instance->requestorId &&
8628                             megasas_get_ld_vf_affiliation(instance, 0))) {
8629                                dcmd_ret = megasas_ld_list_query(instance,
8630                                                MR_LD_QUERY_TYPE_EXPOSED_TO_HOST);
8631                                if (dcmd_ret != DCMD_SUCCESS)
8632                                        goto out;
8633                        }
8634                }
8635        }
8636
8637out:
8638        return dcmd_ret;
8639}
8640
8641/**
8642 * megasas_add_remove_devices - Add/remove devices to SCSI mid-layer
8643 *                              after an AEN event notification
8644 * @instance:                   Adapter soft state
8645 * @scan_type:                  Indicates type of devices (PD/LD) to add
8646 * @return                      void
8647 */
8648static
8649void megasas_add_remove_devices(struct megasas_instance *instance,
8650                                int scan_type)
8651{
8652        int i, j;
8653        u16 pd_index = 0;
8654        u16 ld_index = 0;
8655        u16 channel = 0, id = 0;
8656        struct Scsi_Host *host;
8657        struct scsi_device *sdev1;
8658        struct MR_HOST_DEVICE_LIST *targetid_list = NULL;
8659        struct MR_HOST_DEVICE_LIST_ENTRY *targetid_entry = NULL;
8660
8661        host = instance->host;
8662
8663        if (instance->enable_fw_dev_list) {
8664                targetid_list = instance->host_device_list_buf;
8665                for (i = 0; i < targetid_list->count; i++) {
8666                        targetid_entry = &targetid_list->host_device_list[i];
8667                        if (targetid_entry->flags.u.bits.is_sys_pd) {
8668                                channel = le16_to_cpu(targetid_entry->target_id) /
8669                                                MEGASAS_MAX_DEV_PER_CHANNEL;
8670                                id = le16_to_cpu(targetid_entry->target_id) %
8671                                                MEGASAS_MAX_DEV_PER_CHANNEL;
8672                        } else {
8673                                channel = MEGASAS_MAX_PD_CHANNELS +
8674                                          (le16_to_cpu(targetid_entry->target_id) /
8675                                           MEGASAS_MAX_DEV_PER_CHANNEL);
8676                                id = le16_to_cpu(targetid_entry->target_id) %
8677                                                MEGASAS_MAX_DEV_PER_CHANNEL;
8678                        }
8679                        sdev1 = scsi_device_lookup(host, channel, id, 0);
8680                        if (!sdev1) {
8681                                scsi_add_device(host, channel, id, 0);
8682                        } else {
8683                                scsi_device_put(sdev1);
8684                        }
8685                }
8686        }
8687
8688        if (scan_type & SCAN_PD_CHANNEL) {
8689                for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
8690                        for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
8691                                pd_index = i * MEGASAS_MAX_DEV_PER_CHANNEL + j;
8692                                sdev1 = scsi_device_lookup(host, i, j, 0);
8693                                if (instance->pd_list[pd_index].driveState ==
8694                                                        MR_PD_STATE_SYSTEM) {
8695                                        if (!sdev1)
8696                                                scsi_add_device(host, i, j, 0);
8697                                        else
8698                                                scsi_device_put(sdev1);
8699                                } else {
8700                                        if (sdev1)
8701                                                megasas_remove_scsi_device(sdev1);
8702                                }
8703                        }
8704                }
8705        }
8706
8707        if (scan_type & SCAN_VD_CHANNEL) {
8708                for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
8709                        for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
8710                                ld_index = (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
8711                                sdev1 = scsi_device_lookup(host,
8712                                                MEGASAS_MAX_PD_CHANNELS + i, j, 0);
8713                                if (instance->ld_ids[ld_index] != 0xff) {
8714                                        if (!sdev1)
8715                                                scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
8716                                        else
8717                                                scsi_device_put(sdev1);
8718                                } else {
8719                                        if (sdev1)
8720                                                megasas_remove_scsi_device(sdev1);
8721                                }
8722                        }
8723                }
8724        }
8725
8726}
8727
8728static void
8729megasas_aen_polling(struct work_struct *work)
8730{
8731        struct megasas_aen_event *ev =
8732                container_of(work, struct megasas_aen_event, hotplug_work.work);
8733        struct megasas_instance *instance = ev->instance;
8734        union megasas_evt_class_locale class_locale;
8735        int event_type = 0;
8736        u32 seq_num;
8737        int error;
8738        u8  dcmd_ret = DCMD_SUCCESS;
8739
8740        if (!instance) {
8741                printk(KERN_ERR "invalid instance!\n");
8742                kfree(ev);
8743                return;
8744        }
8745
8746        /* Don't run the event workqueue thread if OCR is running */
8747        mutex_lock(&instance->reset_mutex);
8748
8749        instance->ev = NULL;
8750        if (instance->evt_detail) {
8751                megasas_decode_evt(instance);
8752
8753                switch (le32_to_cpu(instance->evt_detail->code)) {
8754
8755                case MR_EVT_PD_INSERTED:
8756                case MR_EVT_PD_REMOVED:
8757                        event_type = SCAN_PD_CHANNEL;
8758                        break;
8759
8760                case MR_EVT_LD_OFFLINE:
8761                case MR_EVT_CFG_CLEARED:
8762                case MR_EVT_LD_DELETED:
8763                case MR_EVT_LD_CREATED:
8764                        event_type = SCAN_VD_CHANNEL;
8765                        break;
8766
8767                case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
8768                case MR_EVT_FOREIGN_CFG_IMPORTED:
8769                case MR_EVT_LD_STATE_CHANGE:
8770                        event_type = SCAN_PD_CHANNEL | SCAN_VD_CHANNEL;
8771                        dev_info(&instance->pdev->dev, "scanning for scsi%d...\n",
8772                                instance->host->host_no);
8773                        break;
8774
8775                case MR_EVT_CTRL_PROP_CHANGED:
8776                        dcmd_ret = megasas_get_ctrl_info(instance);
8777                        if (dcmd_ret == DCMD_SUCCESS &&
8778                            instance->snapdump_wait_time) {
8779                                megasas_get_snapdump_properties(instance);
8780                                dev_info(&instance->pdev->dev,
8781                                         "Snap dump wait time\t: %d\n",
8782                                         instance->snapdump_wait_time);
8783                        }
8784                        break;
8785                default:
8786                        event_type = 0;
8787                        break;
8788                }
8789        } else {
8790                dev_err(&instance->pdev->dev, "invalid evt_detail!\n");
8791                mutex_unlock(&instance->reset_mutex);
8792                kfree(ev);
8793                return;
8794        }
8795
8796        if (event_type)
8797                dcmd_ret = megasas_update_device_list(instance, event_type);
8798
8799        mutex_unlock(&instance->reset_mutex);
8800
8801        if (event_type && dcmd_ret == DCMD_SUCCESS)
8802                megasas_add_remove_devices(instance, event_type);
8803
8804        if (dcmd_ret == DCMD_SUCCESS)
8805                seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1;
8806        else
8807                seq_num = instance->last_seq_num;
8808
8809        /* Register AEN with FW for latest sequence number plus 1 */
8810        class_locale.members.reserved = 0;
8811        class_locale.members.locale = MR_EVT_LOCALE_ALL;
8812        class_locale.members.class = MR_EVT_CLASS_DEBUG;
8813
8814        if (instance->aen_cmd != NULL) {
8815                kfree(ev);
8816                return;
8817        }
8818
8819        mutex_lock(&instance->reset_mutex);
8820        error = megasas_register_aen(instance, seq_num,
8821                                        class_locale.word);
8822        if (error)
8823                dev_err(&instance->pdev->dev,
8824                        "register aen failed error %x\n", error);
8825
8826        mutex_unlock(&instance->reset_mutex);
8827        kfree(ev);
8828}
8829
8830/**
8831 * megasas_init - Driver load entry point
8832 */
8833static int __init megasas_init(void)
8834{
8835        int rval;
8836
8837        /*
8838         * Booted in kdump kernel, minimize memory footprints by
8839         * disabling few features
8840         */
8841        if (reset_devices) {
8842                msix_vectors = 1;
8843                rdpq_enable = 0;
8844                dual_qdepth_disable = 1;
8845        }
8846
8847        /*
8848         * Announce driver version and other information
8849         */
8850        pr_info("megasas: %s\n", MEGASAS_VERSION);
8851
8852        spin_lock_init(&poll_aen_lock);
8853
8854        support_poll_for_event = 2;
8855        support_device_change = 1;
8856        support_nvme_encapsulation = true;
8857        support_pci_lane_margining = true;
8858
8859        memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
8860
8861        /*
8862         * Register character device node
8863         */
8864        rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
8865
8866        if (rval < 0) {
8867                printk(KERN_DEBUG "megasas: failed to open device node\n");
8868                return rval;
8869        }
8870
8871        megasas_mgmt_majorno = rval;
8872
8873        megasas_init_debugfs();
8874
8875        /*
8876         * Register ourselves as PCI hotplug module
8877         */
8878        rval = pci_register_driver(&megasas_pci_driver);
8879
8880        if (rval) {
8881                printk(KERN_DEBUG "megasas: PCI hotplug registration failed \n");
8882                goto err_pcidrv;
8883        }
8884
8885        if ((event_log_level < MFI_EVT_CLASS_DEBUG) ||
8886            (event_log_level > MFI_EVT_CLASS_DEAD)) {
8887                pr_warn("megaraid_sas: provided event log level is out of range, setting it to default 2(CLASS_CRITICAL), permissible range is: -2 to 4\n");
8888                event_log_level = MFI_EVT_CLASS_CRITICAL;
8889        }
8890
8891        rval = driver_create_file(&megasas_pci_driver.driver,
8892                                  &driver_attr_version);
8893        if (rval)
8894                goto err_dcf_attr_ver;
8895
8896        rval = driver_create_file(&megasas_pci_driver.driver,
8897                                  &driver_attr_release_date);
8898        if (rval)
8899                goto err_dcf_rel_date;
8900
8901        rval = driver_create_file(&megasas_pci_driver.driver,
8902                                &driver_attr_support_poll_for_event);
8903        if (rval)
8904                goto err_dcf_support_poll_for_event;
8905
8906        rval = driver_create_file(&megasas_pci_driver.driver,
8907                                  &driver_attr_dbg_lvl);
8908        if (rval)
8909                goto err_dcf_dbg_lvl;
8910        rval = driver_create_file(&megasas_pci_driver.driver,
8911                                &driver_attr_support_device_change);
8912        if (rval)
8913                goto err_dcf_support_device_change;
8914
8915        rval = driver_create_file(&megasas_pci_driver.driver,
8916                                  &driver_attr_support_nvme_encapsulation);
8917        if (rval)
8918                goto err_dcf_support_nvme_encapsulation;
8919
8920        rval = driver_create_file(&megasas_pci_driver.driver,
8921                                  &driver_attr_support_pci_lane_margining);
8922        if (rval)
8923                goto err_dcf_support_pci_lane_margining;
8924
8925        return rval;
8926
8927err_dcf_support_pci_lane_margining:
8928        driver_remove_file(&megasas_pci_driver.driver,
8929                           &driver_attr_support_nvme_encapsulation);
8930
8931err_dcf_support_nvme_encapsulation:
8932        driver_remove_file(&megasas_pci_driver.driver,
8933                           &driver_attr_support_device_change);
8934
8935err_dcf_support_device_change:
8936        driver_remove_file(&megasas_pci_driver.driver,
8937                           &driver_attr_dbg_lvl);
8938err_dcf_dbg_lvl:
8939        driver_remove_file(&megasas_pci_driver.driver,
8940                        &driver_attr_support_poll_for_event);
8941err_dcf_support_poll_for_event:
8942        driver_remove_file(&megasas_pci_driver.driver,
8943                           &driver_attr_release_date);
8944err_dcf_rel_date:
8945        driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
8946err_dcf_attr_ver:
8947        pci_unregister_driver(&megasas_pci_driver);
8948err_pcidrv:
8949        megasas_exit_debugfs();
8950        unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
8951        return rval;
8952}
8953
8954/**
8955 * megasas_exit - Driver unload entry point
8956 */
8957static void __exit megasas_exit(void)
8958{
8959        driver_remove_file(&megasas_pci_driver.driver,
8960                           &driver_attr_dbg_lvl);
8961        driver_remove_file(&megasas_pci_driver.driver,
8962                        &driver_attr_support_poll_for_event);
8963        driver_remove_file(&megasas_pci_driver.driver,
8964                        &driver_attr_support_device_change);
8965        driver_remove_file(&megasas_pci_driver.driver,
8966                           &driver_attr_release_date);
8967        driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
8968        driver_remove_file(&megasas_pci_driver.driver,
8969                           &driver_attr_support_nvme_encapsulation);
8970        driver_remove_file(&megasas_pci_driver.driver,
8971                           &driver_attr_support_pci_lane_margining);
8972
8973        pci_unregister_driver(&megasas_pci_driver);
8974        megasas_exit_debugfs();
8975        unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
8976}
8977
8978module_init(megasas_init);
8979module_exit(megasas_exit);
8980