kernel/drivers/scsi/pm8001/pm8001_ctl.c

   1 /*
   2  * PMC-Sierra 8001/8081/8088/8089 SAS/SATA based host adapters driver
   3  *
   4  * Copyright (c) 2008-2009 USI Co., Ltd.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions, and the following disclaimer,
  12  *    without modification.
  13  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  14  *    substantially similar to the "NO WARRANTY" disclaimer below
  15  *    ("Disclaimer") and any redistribution must be conditioned upon
  16  *    including a substantially similar Disclaimer requirement for further
  17  *    binary redistribution.
  18  * 3. Neither the names of the above-listed copyright holders nor the names
  19  *    of any contributors may be used to endorse or promote products derived
  20  *    from this software without specific prior written permission.
  21  *
  22  * Alternatively, this software may be distributed under the terms of the
  23  * GNU General Public License ("GPL") version 2 as published by the Free
  24  * Software Foundation.
  25  *
  26  * NO WARRANTY
  27  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  28  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  29  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
  30  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  31  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  32  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  33  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  34  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  35  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  36  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  37  * POSSIBILITY OF SUCH DAMAGES.
  38  *
  39  */
  40 #include <linux/firmware.h>
  41 #include <linux/slab.h>
  42 #include "pm8001_sas.h"
  43 #include "pm8001_ctl.h"
  44
  45 /* scsi host attributes */
  46
  47 /**
  48  * pm8001_ctl_mpi_interface_rev_show - MPI interface revision number
  49  * @cdev: pointer to embedded class device
  50  * @buf: the buffer returned
  51  *
  52  * A sysfs 'read-only' shost attribute.
  53  */
  54 static ssize_t pm8001_ctl_mpi_interface_rev_show(struct device *cdev,
  55         struct device_attribute *attr, char *buf)
  56 {
  57         struct Scsi_Host *shost = class_to_shost(cdev);
  58         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
  59         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
  60
  61         if (pm8001_ha->chip_id == chip_8001) {
  62                 return snprintf(buf, PAGE_SIZE, "%d\n",
  63                         pm8001_ha->main_cfg_tbl.pm8001_tbl.interface_rev);
  64         } else {
  65                 return snprintf(buf, PAGE_SIZE, "%d\n",
  66                         pm8001_ha->main_cfg_tbl.pm80xx_tbl.interface_rev);
  67         }
  68 }
  69 static
  70 DEVICE_ATTR(interface_rev, S_IRUGO, pm8001_ctl_mpi_interface_rev_show, NULL);
  71
  72 /**
  73  * pm8001_ctl_fw_version_show - firmware version
  74  * @cdev: pointer to embedded class device
  75  * @buf: the buffer returned
  76  *
  77  * A sysfs 'read-only' shost attribute.
  78  */
  79 static ssize_t pm8001_ctl_fw_version_show(struct device *cdev,
  80         struct device_attribute *attr, char *buf)
  81 {
  82         struct Scsi_Host *shost = class_to_shost(cdev);
  83         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
  84         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
  85
  86         if (pm8001_ha->chip_id == chip_8001) {
  87                 return snprintf(buf, PAGE_SIZE, "%02x.%02x.%02x.%02x\n",
  88                 (u8)(pm8001_ha->main_cfg_tbl.pm8001_tbl.firmware_rev >> 24),
  89                 (u8)(pm8001_ha->main_cfg_tbl.pm8001_tbl.firmware_rev >> 16),
  90                 (u8)(pm8001_ha->main_cfg_tbl.pm8001_tbl.firmware_rev >> 8),
  91                 (u8)(pm8001_ha->main_cfg_tbl.pm8001_tbl.firmware_rev));
  92         } else {
  93                 return snprintf(buf, PAGE_SIZE, "%02x.%02x.%02x.%02x\n",
  94                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.firmware_rev >> 24),
  95                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.firmware_rev >> 16),
  96                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.firmware_rev >> 8),
  97                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.firmware_rev));
  98         }
  99 }
 100 static DEVICE_ATTR(fw_version, S_IRUGO, pm8001_ctl_fw_version_show, NULL);
 101 /**
 102  * pm8001_ctl_max_out_io_show - max outstanding io supported
 103  * @cdev: pointer to embedded class device
 104  * @buf: the buffer returned
 105  *
 106  * A sysfs 'read-only' shost attribute.
 107  */
 108 static ssize_t pm8001_ctl_max_out_io_show(struct device *cdev,
 109         struct device_attribute *attr, char *buf)
 110 {
 111         struct Scsi_Host *shost = class_to_shost(cdev);
 112         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 113         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 114
 115         if (pm8001_ha->chip_id == chip_8001) {
 116                 return snprintf(buf, PAGE_SIZE, "%d\n",
 117                         pm8001_ha->main_cfg_tbl.pm8001_tbl.max_out_io);
 118         } else {
 119                 return snprintf(buf, PAGE_SIZE, "%d\n",
 120                         pm8001_ha->main_cfg_tbl.pm80xx_tbl.max_out_io);
 121         }
 122 }
 123 static DEVICE_ATTR(max_out_io, S_IRUGO, pm8001_ctl_max_out_io_show, NULL);
 124 /**
 125  * pm8001_ctl_max_devices_show - max devices support
 126  * @cdev: pointer to embedded class device
 127  * @buf: the buffer returned
 128  *
 129  * A sysfs 'read-only' shost attribute.
 130  */
 131 static ssize_t pm8001_ctl_max_devices_show(struct device *cdev,
 132         struct device_attribute *attr, char *buf)
 133 {
 134         struct Scsi_Host *shost = class_to_shost(cdev);
 135         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 136         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 137
 138         if (pm8001_ha->chip_id == chip_8001) {
 139                 return snprintf(buf, PAGE_SIZE, "%04d\n",
 140                         (u16)(pm8001_ha->main_cfg_tbl.pm8001_tbl.max_sgl >> 16)
 141                         );
 142         } else {
 143                 return snprintf(buf, PAGE_SIZE, "%04d\n",
 144                         (u16)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.max_sgl >> 16)
 145                         );
 146         }
 147 }
 148 static DEVICE_ATTR(max_devices, S_IRUGO, pm8001_ctl_max_devices_show, NULL);
 149 /**
 150  * pm8001_ctl_max_sg_list_show - max sg list supported iff not 0.0 for no
 151  * hardware limitation
 152  * @cdev: pointer to embedded class device
 153  * @buf: the buffer returned
 154  *
 155  * A sysfs 'read-only' shost attribute.
 156  */
 157 static ssize_t pm8001_ctl_max_sg_list_show(struct device *cdev,
 158         struct device_attribute *attr, char *buf)
 159 {
 160         struct Scsi_Host *shost = class_to_shost(cdev);
 161         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 162         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 163
 164         if (pm8001_ha->chip_id == chip_8001) {
 165                 return snprintf(buf, PAGE_SIZE, "%04d\n",
 166                         pm8001_ha->main_cfg_tbl.pm8001_tbl.max_sgl & 0x0000FFFF
 167                         );
 168         } else {
 169                 return snprintf(buf, PAGE_SIZE, "%04d\n",
 170                         pm8001_ha->main_cfg_tbl.pm80xx_tbl.max_sgl & 0x0000FFFF
 171                         );
 172         }
 173 }
 174 static DEVICE_ATTR(max_sg_list, S_IRUGO, pm8001_ctl_max_sg_list_show, NULL);
 175
 176 #define SAS_1_0 0x1
 177 #define SAS_1_1 0x2
 178 #define SAS_2_0 0x4
 179
 180 static ssize_t
 181 show_sas_spec_support_status(unsigned int mode, char *buf)
 182 {
 183         ssize_t len = 0;
 184
 185         if (mode & SAS_1_1)
 186                 len = sprintf(buf, "%s", "SAS1.1");
 187         if (mode & SAS_2_0)
 188                 len += sprintf(buf + len, "%s%s", len ? ", " : "", "SAS2.0");
 189         len += sprintf(buf + len, "\n");
 190
 191         return len;
 192 }
 193
 194 /**
 195  * pm8001_ctl_sas_spec_support_show - sas spec supported
 196  * @cdev: pointer to embedded class device
 197  * @buf: the buffer returned
 198  *
 199  * A sysfs 'read-only' shost attribute.
 200  */
 201 static ssize_t pm8001_ctl_sas_spec_support_show(struct device *cdev,
 202         struct device_attribute *attr, char *buf)
 203 {
 204         unsigned int mode;
 205         struct Scsi_Host *shost = class_to_shost(cdev);
 206         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 207         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 208         /* fe000000 means supports SAS2.1 */
 209         if (pm8001_ha->chip_id == chip_8001)
 210                 mode = (pm8001_ha->main_cfg_tbl.pm8001_tbl.ctrl_cap_flag &
 211                                                         0xfe000000)>>25;
 212         else
 213                 /* fe000000 means supports SAS2.1 */
 214                 mode = (pm8001_ha->main_cfg_tbl.pm80xx_tbl.ctrl_cap_flag &
 215                                                         0xfe000000)>>25;
 216         return show_sas_spec_support_status(mode, buf);
 217 }
 218 static DEVICE_ATTR(sas_spec_support, S_IRUGO,
 219                    pm8001_ctl_sas_spec_support_show, NULL);
 220
 221 /**
 222  * pm8001_ctl_sas_address_show - sas address
 223  * @cdev: pointer to embedded class device
 224  * @buf: the buffer returned
 225  *
 226  * This is the controller sas address
 227  *
 228  * A sysfs 'read-only' shost attribute.
 229  */
 230 static ssize_t pm8001_ctl_host_sas_address_show(struct device *cdev,
 231         struct device_attribute *attr, char *buf)
 232 {
 233         struct Scsi_Host *shost = class_to_shost(cdev);
 234         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 235         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 236         return snprintf(buf, PAGE_SIZE, "0x%016llx\n",
 237                         be64_to_cpu(*(__be64 *)pm8001_ha->sas_addr));
 238 }
 239 static DEVICE_ATTR(host_sas_address, S_IRUGO,
 240                    pm8001_ctl_host_sas_address_show, NULL);
 241
 242 /**
 243  * pm8001_ctl_logging_level_show - logging level
 244  * @cdev: pointer to embedded class device
 245  * @buf: the buffer returned
 246  *
 247  * A sysfs 'read/write' shost attribute.
 248  */
 249 static ssize_t pm8001_ctl_logging_level_show(struct device *cdev,
 250         struct device_attribute *attr, char *buf)
 251 {
 252         struct Scsi_Host *shost = class_to_shost(cdev);
 253         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 254         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 255
 256         return snprintf(buf, PAGE_SIZE, "%08xh\n", pm8001_ha->logging_level);
 257 }
 258 static ssize_t pm8001_ctl_logging_level_store(struct device *cdev,
 259         struct device_attribute *attr, const char *buf, size_t count)
 260 {
 261         struct Scsi_Host *shost = class_to_shost(cdev);
 262         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 263         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 264         int val = 0;
 265
 266         if (sscanf(buf, "%x", &val) != 1)
 267                 return -EINVAL;
 268
 269         pm8001_ha->logging_level = val;
 270         return strlen(buf);
 271 }
 272
 273 static DEVICE_ATTR(logging_level, S_IRUGO | S_IWUSR,
 274         pm8001_ctl_logging_level_show, pm8001_ctl_logging_level_store);
 275 /**
 276  * pm8001_ctl_aap_log_show - aap1 event log
 277  * @cdev: pointer to embedded class device
 278  * @buf: the buffer returned
 279  *
 280  * A sysfs 'read-only' shost attribute.
 281  */
 282 static ssize_t pm8001_ctl_aap_log_show(struct device *cdev,
 283         struct device_attribute *attr, char *buf)
 284 {
 285         struct Scsi_Host *shost = class_to_shost(cdev);
 286         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 287         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 288         int i;
 289 #define AAP1_MEMMAP(r, c) \
 290         (*(u32 *)((u8*)pm8001_ha->memoryMap.region[AAP1].virt_ptr + (r) * 32 \
 291         + (c)))
 292
 293         char *str = buf;
 294         int max = 2;
 295         for (i = 0; i < max; i++) {
 296                 str += sprintf(str, "0x%08x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x"
 297                                "0x%08x 0x%08x\n",
 298                                AAP1_MEMMAP(i, 0),
 299                                AAP1_MEMMAP(i, 4),
 300                                AAP1_MEMMAP(i, 8),
 301                                AAP1_MEMMAP(i, 12),
 302                                AAP1_MEMMAP(i, 16),
 303                                AAP1_MEMMAP(i, 20),
 304                                AAP1_MEMMAP(i, 24),
 305                                AAP1_MEMMAP(i, 28));
 306         }
 307
 308         return str - buf;
 309 }
 310 static DEVICE_ATTR(aap_log, S_IRUGO, pm8001_ctl_aap_log_show, NULL);
 311 /**
 312  * pm8001_ctl_ib_queue_log_show - Out bound Queue log
 313  * @cdev:pointer to embedded class device
 314  * @buf: the buffer returned
 315  * A sysfs 'read-only' shost attribute.
 316  */
 317 static ssize_t pm8001_ctl_ib_queue_log_show(struct device *cdev,
 318         struct device_attribute *attr, char *buf)
 319 {
 320         struct Scsi_Host *shost = class_to_shost(cdev);
 321         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 322         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 323         int offset;
 324         char *str = buf;
 325         int start = 0;
 326 #define IB_MEMMAP(c)    \
 327                 (*(u32 *)((u8 *)pm8001_ha->     \
 328                 memoryMap.region[IB].virt_ptr + \
 329                 pm8001_ha->evtlog_ib_offset + (c)))
 330
 331         for (offset = 0; offset < IB_OB_READ_TIMES; offset++) {
 332                 str += sprintf(str, "0x%08x\n", IB_MEMMAP(start));
 333                 start = start + 4;
 334         }
 335         pm8001_ha->evtlog_ib_offset += SYSFS_OFFSET;
 336         if (((pm8001_ha->evtlog_ib_offset) % (PM80XX_IB_OB_QUEUE_SIZE)) == 0)
 337                 pm8001_ha->evtlog_ib_offset = 0;
 338
 339         return str - buf;
 340 }
 341
 342 static DEVICE_ATTR(ib_log, S_IRUGO, pm8001_ctl_ib_queue_log_show, NULL);
 343 /**
 344  * pm8001_ctl_ob_queue_log_show - Out bound Queue log
 345  * @cdev:pointer to embedded class device
 346  * @buf: the buffer returned
 347  * A sysfs 'read-only' shost attribute.
 348  */
 349
 350 static ssize_t pm8001_ctl_ob_queue_log_show(struct device *cdev,
 351         struct device_attribute *attr, char *buf)
 352 {
 353         struct Scsi_Host *shost = class_to_shost(cdev);
 354         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 355         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 356         int offset;
 357         char *str = buf;
 358         int start = 0;
 359 #define OB_MEMMAP(c)    \
 360                 (*(u32 *)((u8 *)pm8001_ha->     \
 361                 memoryMap.region[OB].virt_ptr + \
 362                 pm8001_ha->evtlog_ob_offset + (c)))
 363
 364         for (offset = 0; offset < IB_OB_READ_TIMES; offset++) {
 365                 str += sprintf(str, "0x%08x\n", OB_MEMMAP(start));
 366                 start = start + 4;
 367         }
 368         pm8001_ha->evtlog_ob_offset += SYSFS_OFFSET;
 369         if (((pm8001_ha->evtlog_ob_offset) % (PM80XX_IB_OB_QUEUE_SIZE)) == 0)
 370                 pm8001_ha->evtlog_ob_offset = 0;
 371
 372         return str - buf;
 373 }
 374 static DEVICE_ATTR(ob_log, S_IRUGO, pm8001_ctl_ob_queue_log_show, NULL);
 375 /**
 376  * pm8001_ctl_bios_version_show - Bios version Display
 377  * @cdev:pointer to embedded class device
 378  * @buf:the buffer returned
 379  * A sysfs 'read-only' shost attribute.
 380  */
 381 static ssize_t pm8001_ctl_bios_version_show(struct device *cdev,
 382         struct device_attribute *attr, char *buf)
 383 {
 384         struct Scsi_Host *shost = class_to_shost(cdev);
 385         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 386         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 387         char *str = buf;
 388         int bios_index;
 389         DECLARE_COMPLETION_ONSTACK(completion);
 390         struct pm8001_ioctl_payload payload;
 391
 392         pm8001_ha->nvmd_completion = &completion;
 393         payload.minor_function = 7;
 394         payload.offset = 0;
 395         payload.length = 4096;
 396         payload.func_specific = kzalloc(4096, GFP_KERNEL);
 397         if (!payload.func_specific)
 398                 return -ENOMEM;
 399         if (PM8001_CHIP_DISP->get_nvmd_req(pm8001_ha, &payload)) {
 400                 kfree(payload.func_specific);
 401                 return -ENOMEM;
 402         }
 403         wait_for_completion(&completion);
 404         for (bios_index = BIOSOFFSET; bios_index < BIOS_OFFSET_LIMIT;
 405                 bios_index++)
 406                 str += sprintf(str, "%c",
 407                         *(payload.func_specific+bios_index));
 408         kfree(payload.func_specific);
 409         return str - buf;
 410 }
 411 static DEVICE_ATTR(bios_version, S_IRUGO, pm8001_ctl_bios_version_show, NULL);
 412 /**
 413  * pm8001_ctl_aap_log_show - IOP event log
 414  * @cdev: pointer to embedded class device
 415  * @buf: the buffer returned
 416  *
 417  * A sysfs 'read-only' shost attribute.
 418  */
 419 static ssize_t pm8001_ctl_iop_log_show(struct device *cdev,
 420         struct device_attribute *attr, char *buf)
 421 {
 422         struct Scsi_Host *shost = class_to_shost(cdev);
 423         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 424         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 425 #define IOP_MEMMAP(r, c) \
 426         (*(u32 *)((u8*)pm8001_ha->memoryMap.region[IOP].virt_ptr + (r) * 32 \
 427         + (c)))
 428         int i;
 429         char *str = buf;
 430         int max = 2;
 431         for (i = 0; i < max; i++) {
 432                 str += sprintf(str, "0x%08x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x"
 433                                "0x%08x 0x%08x\n",
 434                                IOP_MEMMAP(i, 0),
 435                                IOP_MEMMAP(i, 4),
 436                                IOP_MEMMAP(i, 8),
 437                                IOP_MEMMAP(i, 12),
 438                                IOP_MEMMAP(i, 16),
 439                                IOP_MEMMAP(i, 20),
 440                                IOP_MEMMAP(i, 24),
 441                                IOP_MEMMAP(i, 28));
 442         }
 443
 444         return str - buf;
 445 }
 446 static DEVICE_ATTR(iop_log, S_IRUGO, pm8001_ctl_iop_log_show, NULL);
 447
 448 /**
 449  ** pm8001_ctl_fatal_log_show - fatal error logging
 450  ** @cdev:pointer to embedded class device
 451  ** @buf: the buffer returned
 452  **
 453  ** A sysfs 'read-only' shost attribute.
 454  **/
 455
 456 static ssize_t pm8001_ctl_fatal_log_show(struct device *cdev,
 457         struct device_attribute *attr, char *buf)
 458 {
 459         ssize_t count;
 460
 461         count = pm80xx_get_fatal_dump(cdev, attr, buf);
 462         return count;
 463 }
 464
 465 static DEVICE_ATTR(fatal_log, S_IRUGO, pm8001_ctl_fatal_log_show, NULL);
 466
 467
 468 /**
 469  ** pm8001_ctl_gsm_log_show - gsm dump collection
 470  ** @cdev:pointer to embedded class device
 471  ** @buf: the buffer returned
 472  **A sysfs 'read-only' shost attribute.
 473  **/
 474 static ssize_t pm8001_ctl_gsm_log_show(struct device *cdev,
 475         struct device_attribute *attr, char *buf)
 476 {
 477         ssize_t count;
 478
 479         count = pm8001_get_gsm_dump(cdev, SYSFS_OFFSET, buf);
 480         return count;
 481 }
 482
 483 static DEVICE_ATTR(gsm_log, S_IRUGO, pm8001_ctl_gsm_log_show, NULL);
 484
 485 #define FLASH_CMD_NONE      0x00
 486 #define FLASH_CMD_UPDATE    0x01
 487 #define FLASH_CMD_SET_NVMD    0x02
 488
 489 struct flash_command {
 490      u8      command[8];
 491      int     code;
 492 };
 493
 494 static struct flash_command flash_command_table[] =
 495 {
 496      {"set_nvmd",    FLASH_CMD_SET_NVMD},
 497      {"update",      FLASH_CMD_UPDATE},
 498      {"",            FLASH_CMD_NONE} /* Last entry should be NULL. */
 499 };
 500
 501 struct error_fw {
 502      char    *reason;
 503      int     err_code;
 504 };
 505
 506 static struct error_fw flash_error_table[] =
 507 {
 508      {"Failed to open fw image file",   FAIL_OPEN_BIOS_FILE},
 509      {"image header mismatch",          FLASH_UPDATE_HDR_ERR},
 510      {"image offset mismatch",          FLASH_UPDATE_OFFSET_ERR},
 511      {"image CRC Error",                FLASH_UPDATE_CRC_ERR},
 512      {"image length Error.",            FLASH_UPDATE_LENGTH_ERR},
 513      {"Failed to program flash chip",   FLASH_UPDATE_HW_ERR},
 514      {"Flash chip not supported.",      FLASH_UPDATE_DNLD_NOT_SUPPORTED},
 515      {"Flash update disabled.",         FLASH_UPDATE_DISABLED},
 516      {"Flash in progress",              FLASH_IN_PROGRESS},
 517      {"Image file size Error",          FAIL_FILE_SIZE},
 518      {"Input parameter error",          FAIL_PARAMETERS},
 519      {"Out of memory",                  FAIL_OUT_MEMORY},
 520      {"OK", 0}  /* Last entry err_code = 0. */
 521 };
 522
 523 static int pm8001_set_nvmd(struct pm8001_hba_info *pm8001_ha)
 524 {
 525         struct pm8001_ioctl_payload     *payload;
 526         DECLARE_COMPLETION_ONSTACK(completion);
 527         u8              *ioctlbuffer;
 528         u32             ret;
 529         u32             length = 1024 * 5 + sizeof(*payload) - 1;
 530
 531         if (pm8001_ha->fw_image->size > 4096) {
 532                 pm8001_ha->fw_status = FAIL_FILE_SIZE;
 533                 return -EFAULT;
 534         }
 535
 536         ioctlbuffer = kzalloc(length, GFP_KERNEL);
 537         if (!ioctlbuffer) {
 538                 pm8001_ha->fw_status = FAIL_OUT_MEMORY;
 539                 return -ENOMEM;
 540         }
 541         payload = (struct pm8001_ioctl_payload *)ioctlbuffer;
 542         memcpy((u8 *)&payload->func_specific, (u8 *)pm8001_ha->fw_image->data,
 543                                 pm8001_ha->fw_image->size);
 544         payload->length = pm8001_ha->fw_image->size;
 545         payload->id = 0;
 546         payload->minor_function = 0x1;
 547         pm8001_ha->nvmd_completion = &completion;
 548         ret = PM8001_CHIP_DISP->set_nvmd_req(pm8001_ha, payload);
 549         if (ret) {
 550                 pm8001_ha->fw_status = FAIL_OUT_MEMORY;
 551                 goto out;
 552         }
 553         wait_for_completion(&completion);
 554 out:
 555         kfree(ioctlbuffer);
 556         return ret;
 557 }
 558
 559 static int pm8001_update_flash(struct pm8001_hba_info *pm8001_ha)
 560 {
 561         struct pm8001_ioctl_payload     *payload;
 562         DECLARE_COMPLETION_ONSTACK(completion);
 563         u8              *ioctlbuffer;
 564         struct fw_control_info  *fwControl;
 565         u32             partitionSize, partitionSizeTmp;
 566         u32             loopNumber, loopcount;
 567         struct pm8001_fw_image_header *image_hdr;
 568         u32             sizeRead = 0;
 569         u32             ret = 0;
 570         u32             length = 1024 * 16 + sizeof(*payload) - 1;
 571
 572         if (pm8001_ha->fw_image->size < 28) {
 573                 pm8001_ha->fw_status = FAIL_FILE_SIZE;
 574                 return -EFAULT;
 575         }
 576         ioctlbuffer = kzalloc(length, GFP_KERNEL);
 577         if (!ioctlbuffer) {
 578                 pm8001_ha->fw_status = FAIL_OUT_MEMORY;
 579                 return -ENOMEM;
 580         }
 581         image_hdr = (struct pm8001_fw_image_header *)pm8001_ha->fw_image->data;
 582         while (sizeRead < pm8001_ha->fw_image->size) {
 583                 partitionSizeTmp =
 584                         *(u32 *)((u8 *)&image_hdr->image_length + sizeRead);
 585                 partitionSize = be32_to_cpu(partitionSizeTmp);
 586                 loopcount = DIV_ROUND_UP(partitionSize + HEADER_LEN,
 587                                         IOCTL_BUF_SIZE);
 588                 for (loopNumber = 0; loopNumber < loopcount; loopNumber++) {
 589                         payload = (struct pm8001_ioctl_payload *)ioctlbuffer;
 590                         payload->length = 1024*16;
 591                         payload->id = 0;
 592                         fwControl =
 593                               (struct fw_control_info *)&payload->func_specific;
 594                         fwControl->len = IOCTL_BUF_SIZE;   /* IN */
 595                         fwControl->size = partitionSize + HEADER_LEN;/* IN */
 596                         fwControl->retcode = 0;/* OUT */
 597                         fwControl->offset = loopNumber * IOCTL_BUF_SIZE;/*OUT */
 598
 599                 /* for the last chunk of data in case file size is not even with
 600                 4k, load only the rest*/
 601                 if (((loopcount-loopNumber) == 1) &&
 602                         ((partitionSize + HEADER_LEN) % IOCTL_BUF_SIZE)) {
 603                         fwControl->len =
 604                                 (partitionSize + HEADER_LEN) % IOCTL_BUF_SIZE;
 605                         memcpy((u8 *)fwControl->buffer,
 606                                 (u8 *)pm8001_ha->fw_image->data + sizeRead,
 607                                 (partitionSize + HEADER_LEN) % IOCTL_BUF_SIZE);
 608                         sizeRead +=
 609                                 (partitionSize + HEADER_LEN) % IOCTL_BUF_SIZE;
 610                 } else {
 611                         memcpy((u8 *)fwControl->buffer,
 612                                 (u8 *)pm8001_ha->fw_image->data + sizeRead,
 613                                 IOCTL_BUF_SIZE);
 614                         sizeRead += IOCTL_BUF_SIZE;
 615                 }
 616
 617                 pm8001_ha->nvmd_completion = &completion;
 618                 ret = PM8001_CHIP_DISP->fw_flash_update_req(pm8001_ha, payload);
 619                 if (ret) {
 620                         pm8001_ha->fw_status = FAIL_OUT_MEMORY;
 621                         goto out;
 622                 }
 623                 wait_for_completion(&completion);
 624                 if (fwControl->retcode > FLASH_UPDATE_IN_PROGRESS) {
 625                         pm8001_ha->fw_status = fwControl->retcode;
 626                         ret = -EFAULT;
 627                         goto out;
 628                 }
 629                 }
 630         }
 631 out:
 632         kfree(ioctlbuffer);
 633         return ret;
 634 }
 635 static ssize_t pm8001_store_update_fw(struct device *cdev,
 636                                       struct device_attribute *attr,
 637                                       const char *buf, size_t count)
 638 {
 639         struct Scsi_Host *shost = class_to_shost(cdev);
 640         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 641         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 642         char *cmd_ptr, *filename_ptr;
 643         int res, i;
 644         int flash_command = FLASH_CMD_NONE;
 645         int ret;
 646
 647         if (!capable(CAP_SYS_ADMIN))
 648                 return -EACCES;
 649
 650         /* this test protects us from running two flash processes at once,
 651          * so we should start with this test */
 652         if (pm8001_ha->fw_status == FLASH_IN_PROGRESS)
 653                 return -EINPROGRESS;
 654         pm8001_ha->fw_status = FLASH_IN_PROGRESS;
 655
 656         cmd_ptr = kzalloc(count*2, GFP_KERNEL);
 657         if (!cmd_ptr) {
 658                 pm8001_ha->fw_status = FAIL_OUT_MEMORY;
 659                 return -ENOMEM;
 660         }
 661
 662         filename_ptr = cmd_ptr + count;
 663         res = sscanf(buf, "%s %s", cmd_ptr, filename_ptr);
 664         if (res != 2) {
 665                 pm8001_ha->fw_status = FAIL_PARAMETERS;
 666                 ret = -EINVAL;
 667                 goto out;
 668         }
 669
 670         for (i = 0; flash_command_table[i].code != FLASH_CMD_NONE; i++) {
 671                 if (!memcmp(flash_command_table[i].command,
 672                                  cmd_ptr, strlen(cmd_ptr))) {
 673                         flash_command = flash_command_table[i].code;
 674                         break;
 675                 }
 676         }
 677         if (flash_command == FLASH_CMD_NONE) {
 678                 pm8001_ha->fw_status = FAIL_PARAMETERS;
 679                 ret = -EINVAL;
 680                 goto out;
 681         }
 682
 683         ret = request_firmware(&pm8001_ha->fw_image,
 684                                filename_ptr,
 685                                pm8001_ha->dev);
 686
 687         if (ret) {
 688                 PM8001_FAIL_DBG(pm8001_ha,
 689                         pm8001_printk(
 690                         "Failed to load firmware image file %s, error %d\n",
 691                         filename_ptr, ret));
 692                 pm8001_ha->fw_status = FAIL_OPEN_BIOS_FILE;
 693                 goto out;
 694         }
 695
 696         if (FLASH_CMD_UPDATE == flash_command)
 697                 ret = pm8001_update_flash(pm8001_ha);
 698         else
 699                 ret = pm8001_set_nvmd(pm8001_ha);
 700
 701         release_firmware(pm8001_ha->fw_image);
 702 out:
 703         kfree(cmd_ptr);
 704
 705         if (ret)
 706                 return ret;
 707
 708         pm8001_ha->fw_status = FLASH_OK;
 709         return count;
 710 }
 711
 712 static ssize_t pm8001_show_update_fw(struct device *cdev,
 713                                      struct device_attribute *attr, char *buf)
 714 {
 715         int i;
 716         struct Scsi_Host *shost = class_to_shost(cdev);
 717         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 718         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 719
 720         for (i = 0; flash_error_table[i].err_code != 0; i++) {
 721                 if (flash_error_table[i].err_code == pm8001_ha->fw_status)
 722                         break;
 723         }
 724         if (pm8001_ha->fw_status != FLASH_IN_PROGRESS)
 725                 pm8001_ha->fw_status = FLASH_OK;
 726
 727         return snprintf(buf, PAGE_SIZE, "status=%x %s\n",
 728                         flash_error_table[i].err_code,
 729                         flash_error_table[i].reason);
 730 }
 731
 732 static DEVICE_ATTR(update_fw, S_IRUGO|S_IWUSR|S_IWGRP,
 733         pm8001_show_update_fw, pm8001_store_update_fw);
 734 struct device_attribute *pm8001_host_attrs[] = {
 735         &dev_attr_interface_rev,
 736         &dev_attr_fw_version,
 737         &dev_attr_update_fw,
 738         &dev_attr_aap_log,
 739         &dev_attr_iop_log,
 740         &dev_attr_fatal_log,
 741         &dev_attr_gsm_log,
 742         &dev_attr_max_out_io,
 743         &dev_attr_max_devices,
 744         &dev_attr_max_sg_list,
 745         &dev_attr_sas_spec_support,
 746         &dev_attr_logging_level,
 747         &dev_attr_host_sas_address,
 748         &dev_attr_bios_version,
 749         &dev_attr_ib_log,
 750         &dev_attr_ob_log,
 751         NULL,
 752 };
 753