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_bios_version_show - Bios version Display
 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_bios_version_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         char *str = buf;
 324         void *virt_addr;
 325         int bios_index;
 326         DECLARE_COMPLETION_ONSTACK(completion);
 327         struct pm8001_ioctl_payload payload;
 328
 329         pm8001_ha->nvmd_completion = &completion;
 330         payload.minor_function = 7;
 331         payload.offset = 0;
 332         payload.length = 4096;
 333         payload.func_specific = kzalloc(4096, GFP_KERNEL);
 334         PM8001_CHIP_DISP->get_nvmd_req(pm8001_ha, &payload);
 335         wait_for_completion(&completion);
 336         virt_addr = pm8001_ha->memoryMap.region[NVMD].virt_ptr;
 337         for (bios_index = BIOSOFFSET; bios_index < BIOS_OFFSET_LIMIT;
 338                 bios_index++)
 339                 str += sprintf(str, "%c",
 340                         *((u8 *)((u8 *)virt_addr+bios_index)));
 341         return str - buf;
 342 }
 343 static DEVICE_ATTR(bios_version, S_IRUGO, pm8001_ctl_bios_version_show, NULL);
 344 /**
 345  * pm8001_ctl_aap_log_show - IOP event log
 346  * @cdev: pointer to embedded class device
 347  * @buf: the buffer returned
 348  *
 349  * A sysfs 'read-only' shost attribute.
 350  */
 351 static ssize_t pm8001_ctl_iop_log_show(struct device *cdev,
 352         struct device_attribute *attr, char *buf)
 353 {
 354         struct Scsi_Host *shost = class_to_shost(cdev);
 355         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 356         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 357 #define IOP_MEMMAP(r, c) \
 358         (*(u32 *)((u8*)pm8001_ha->memoryMap.region[IOP].virt_ptr + (r) * 32 \
 359         + (c)))
 360         int i;
 361         char *str = buf;
 362         int max = 2;
 363         for (i = 0; i < max; i++) {
 364                 str += sprintf(str, "0x%08x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x"
 365                                "0x%08x 0x%08x\n",
 366                                IOP_MEMMAP(i, 0),
 367                                IOP_MEMMAP(i, 4),
 368                                IOP_MEMMAP(i, 8),
 369                                IOP_MEMMAP(i, 12),
 370                                IOP_MEMMAP(i, 16),
 371                                IOP_MEMMAP(i, 20),
 372                                IOP_MEMMAP(i, 24),
 373                                IOP_MEMMAP(i, 28));
 374         }
 375
 376         return str - buf;
 377 }
 378 static DEVICE_ATTR(iop_log, S_IRUGO, pm8001_ctl_iop_log_show, NULL);
 379
 380 #define FLASH_CMD_NONE      0x00
 381 #define FLASH_CMD_UPDATE    0x01
 382 #define FLASH_CMD_SET_NVMD    0x02
 383
 384 struct flash_command {
 385      u8      command[8];
 386      int     code;
 387 };
 388
 389 static struct flash_command flash_command_table[] =
 390 {
 391      {"set_nvmd",    FLASH_CMD_SET_NVMD},
 392      {"update",      FLASH_CMD_UPDATE},
 393      {"",            FLASH_CMD_NONE} /* Last entry should be NULL. */
 394 };
 395
 396 struct error_fw {
 397      char    *reason;
 398      int     err_code;
 399 };
 400
 401 static struct error_fw flash_error_table[] =
 402 {
 403      {"Failed to open fw image file",   FAIL_OPEN_BIOS_FILE},
 404      {"image header mismatch",          FLASH_UPDATE_HDR_ERR},
 405      {"image offset mismatch",          FLASH_UPDATE_OFFSET_ERR},
 406      {"image CRC Error",                FLASH_UPDATE_CRC_ERR},
 407      {"image length Error.",            FLASH_UPDATE_LENGTH_ERR},
 408      {"Failed to program flash chip",   FLASH_UPDATE_HW_ERR},
 409      {"Flash chip not supported.",      FLASH_UPDATE_DNLD_NOT_SUPPORTED},
 410      {"Flash update disabled.",         FLASH_UPDATE_DISABLED},
 411      {"Flash in progress",              FLASH_IN_PROGRESS},
 412      {"Image file size Error",          FAIL_FILE_SIZE},
 413      {"Input parameter error",          FAIL_PARAMETERS},
 414      {"Out of memory",                  FAIL_OUT_MEMORY},
 415      {"OK", 0}  /* Last entry err_code = 0. */
 416 };
 417
 418 static int pm8001_set_nvmd(struct pm8001_hba_info *pm8001_ha)
 419 {
 420         struct pm8001_ioctl_payload     *payload;
 421         DECLARE_COMPLETION_ONSTACK(completion);
 422         u8              *ioctlbuffer = NULL;
 423         u32             length = 0;
 424         u32             ret = 0;
 425
 426         length = 1024 * 5 + sizeof(*payload) - 1;
 427         ioctlbuffer = kzalloc(length, GFP_KERNEL);
 428         if (!ioctlbuffer)
 429                 return -ENOMEM;
 430         if ((pm8001_ha->fw_image->size <= 0) ||
 431             (pm8001_ha->fw_image->size > 4096)) {
 432                 ret = FAIL_FILE_SIZE;
 433                 goto out;
 434         }
 435         payload = (struct pm8001_ioctl_payload *)ioctlbuffer;
 436         memcpy((u8 *)&payload->func_specific, (u8 *)pm8001_ha->fw_image->data,
 437                                 pm8001_ha->fw_image->size);
 438         payload->length = pm8001_ha->fw_image->size;
 439         payload->id = 0;
 440         payload->minor_function = 0x1;
 441         pm8001_ha->nvmd_completion = &completion;
 442         ret = PM8001_CHIP_DISP->set_nvmd_req(pm8001_ha, payload);
 443         wait_for_completion(&completion);
 444 out:
 445         kfree(ioctlbuffer);
 446         return ret;
 447 }
 448
 449 static int pm8001_update_flash(struct pm8001_hba_info *pm8001_ha)
 450 {
 451         struct pm8001_ioctl_payload     *payload;
 452         DECLARE_COMPLETION_ONSTACK(completion);
 453         u8              *ioctlbuffer = NULL;
 454         u32             length = 0;
 455         struct fw_control_info  *fwControl;
 456         u32             loopNumber, loopcount = 0;
 457         u32             sizeRead = 0;
 458         u32             partitionSize, partitionSizeTmp;
 459         u32             ret = 0;
 460         u32             partitionNumber = 0;
 461         struct pm8001_fw_image_header *image_hdr;
 462
 463         length = 1024 * 16 + sizeof(*payload) - 1;
 464         ioctlbuffer = kzalloc(length, GFP_KERNEL);
 465         image_hdr = (struct pm8001_fw_image_header *)pm8001_ha->fw_image->data;
 466         if (!ioctlbuffer)
 467                 return -ENOMEM;
 468         if (pm8001_ha->fw_image->size < 28) {
 469                 ret = FAIL_FILE_SIZE;
 470                 goto out;
 471         }
 472
 473         while (sizeRead < pm8001_ha->fw_image->size) {
 474                 partitionSizeTmp =
 475                         *(u32 *)((u8 *)&image_hdr->image_length + sizeRead);
 476                 partitionSize = be32_to_cpu(partitionSizeTmp);
 477                 loopcount = (partitionSize + HEADER_LEN)/IOCTL_BUF_SIZE;
 478                 if (loopcount % IOCTL_BUF_SIZE)
 479                         loopcount++;
 480                 if (loopcount == 0)
 481                         loopcount++;
 482                 for (loopNumber = 0; loopNumber < loopcount; loopNumber++) {
 483                         payload = (struct pm8001_ioctl_payload *)ioctlbuffer;
 484                         payload->length = 1024*16;
 485                         payload->id = 0;
 486                         fwControl =
 487                               (struct fw_control_info *)&payload->func_specific;
 488                         fwControl->len = IOCTL_BUF_SIZE;   /* IN */
 489                         fwControl->size = partitionSize + HEADER_LEN;/* IN */
 490                         fwControl->retcode = 0;/* OUT */
 491                         fwControl->offset = loopNumber * IOCTL_BUF_SIZE;/*OUT */
 492
 493                 /* for the last chunk of data in case file size is not even with
 494                 4k, load only the rest*/
 495                 if (((loopcount-loopNumber) == 1) &&
 496                         ((partitionSize + HEADER_LEN) % IOCTL_BUF_SIZE)) {
 497                         fwControl->len =
 498                                 (partitionSize + HEADER_LEN) % IOCTL_BUF_SIZE;
 499                         memcpy((u8 *)fwControl->buffer,
 500                                 (u8 *)pm8001_ha->fw_image->data + sizeRead,
 501                                 (partitionSize + HEADER_LEN) % IOCTL_BUF_SIZE);
 502                         sizeRead +=
 503                                 (partitionSize + HEADER_LEN) % IOCTL_BUF_SIZE;
 504                 } else {
 505                         memcpy((u8 *)fwControl->buffer,
 506                                 (u8 *)pm8001_ha->fw_image->data + sizeRead,
 507                                 IOCTL_BUF_SIZE);
 508                         sizeRead += IOCTL_BUF_SIZE;
 509                 }
 510
 511                 pm8001_ha->nvmd_completion = &completion;
 512                 ret = PM8001_CHIP_DISP->fw_flash_update_req(pm8001_ha, payload);
 513                 wait_for_completion(&completion);
 514                 if (ret || (fwControl->retcode > FLASH_UPDATE_IN_PROGRESS)) {
 515                         ret = fwControl->retcode;
 516                         kfree(ioctlbuffer);
 517                         ioctlbuffer = NULL;
 518                         break;
 519                 }
 520         }
 521         if (ret)
 522                 break;
 523         partitionNumber++;
 524 }
 525 out:
 526         kfree(ioctlbuffer);
 527         return ret;
 528 }
 529 static ssize_t pm8001_store_update_fw(struct device *cdev,
 530                                       struct device_attribute *attr,
 531                                       const char *buf, size_t count)
 532 {
 533         struct Scsi_Host *shost = class_to_shost(cdev);
 534         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 535         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 536         char *cmd_ptr, *filename_ptr;
 537         int res, i;
 538         int flash_command = FLASH_CMD_NONE;
 539         int err = 0;
 540         if (!capable(CAP_SYS_ADMIN))
 541                 return -EACCES;
 542
 543         cmd_ptr = kzalloc(count*2, GFP_KERNEL);
 544
 545         if (!cmd_ptr) {
 546                 err = FAIL_OUT_MEMORY;
 547                 goto out;
 548         }
 549
 550         filename_ptr = cmd_ptr + count;
 551         res = sscanf(buf, "%s %s", cmd_ptr, filename_ptr);
 552         if (res != 2) {
 553                 err = FAIL_PARAMETERS;
 554                 goto out1;
 555         }
 556
 557         for (i = 0; flash_command_table[i].code != FLASH_CMD_NONE; i++) {
 558                 if (!memcmp(flash_command_table[i].command,
 559                                  cmd_ptr, strlen(cmd_ptr))) {
 560                         flash_command = flash_command_table[i].code;
 561                         break;
 562                 }
 563         }
 564         if (flash_command == FLASH_CMD_NONE) {
 565                 err = FAIL_PARAMETERS;
 566                 goto out1;
 567         }
 568
 569         if (pm8001_ha->fw_status == FLASH_IN_PROGRESS) {
 570                 err = FLASH_IN_PROGRESS;
 571                 goto out1;
 572         }
 573         err = request_firmware(&pm8001_ha->fw_image,
 574                                filename_ptr,
 575                                pm8001_ha->dev);
 576
 577         if (err) {
 578                 PM8001_FAIL_DBG(pm8001_ha,
 579                         pm8001_printk("Failed to load firmware image file %s,"
 580                         " error %d\n", filename_ptr, err));
 581                 err = FAIL_OPEN_BIOS_FILE;
 582                 goto out1;
 583         }
 584
 585         switch (flash_command) {
 586         case FLASH_CMD_UPDATE:
 587                 pm8001_ha->fw_status = FLASH_IN_PROGRESS;
 588                 err = pm8001_update_flash(pm8001_ha);
 589                 break;
 590         case FLASH_CMD_SET_NVMD:
 591                 pm8001_ha->fw_status = FLASH_IN_PROGRESS;
 592                 err = pm8001_set_nvmd(pm8001_ha);
 593                 break;
 594         default:
 595                 pm8001_ha->fw_status = FAIL_PARAMETERS;
 596                 err = FAIL_PARAMETERS;
 597                 break;
 598         }
 599         release_firmware(pm8001_ha->fw_image);
 600 out1:
 601         kfree(cmd_ptr);
 602 out:
 603         pm8001_ha->fw_status = err;
 604
 605         if (!err)
 606                 return count;
 607         else
 608                 return -err;
 609 }
 610
 611 static ssize_t pm8001_show_update_fw(struct device *cdev,
 612                                      struct device_attribute *attr, char *buf)
 613 {
 614         int i;
 615         struct Scsi_Host *shost = class_to_shost(cdev);
 616         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 617         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 618
 619         for (i = 0; flash_error_table[i].err_code != 0; i++) {
 620                 if (flash_error_table[i].err_code == pm8001_ha->fw_status)
 621                         break;
 622         }
 623         if (pm8001_ha->fw_status != FLASH_IN_PROGRESS)
 624                 pm8001_ha->fw_status = FLASH_OK;
 625
 626         return snprintf(buf, PAGE_SIZE, "status=%x %s\n",
 627                         flash_error_table[i].err_code,
 628                         flash_error_table[i].reason);
 629 }
 630
 631 static DEVICE_ATTR(update_fw, S_IRUGO|S_IWUGO,
 632         pm8001_show_update_fw, pm8001_store_update_fw);
 633 struct device_attribute *pm8001_host_attrs[] = {
 634         &dev_attr_interface_rev,
 635         &dev_attr_fw_version,
 636         &dev_attr_update_fw,
 637         &dev_attr_aap_log,
 638         &dev_attr_iop_log,
 639         &dev_attr_max_out_io,
 640         &dev_attr_max_devices,
 641         &dev_attr_max_sg_list,
 642         &dev_attr_sas_spec_support,
 643         &dev_attr_logging_level,
 644         &dev_attr_host_sas_address,
 645         &dev_attr_bios_version,
 646         NULL,
 647 };
 648