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 #include "pm8001_chips.h"
  45
  46 /* scsi host attributes */
  47
  48 /**
  49  * pm8001_ctl_mpi_interface_rev_show - MPI interface revision number
  50  * @cdev: pointer to embedded class device
  51  * @attr: device attribute (unused)
  52  * @buf: the buffer returned
  53  *
  54  * A sysfs 'read-only' shost attribute.
  55  */
  56 static ssize_t pm8001_ctl_mpi_interface_rev_show(struct device *cdev,
  57         struct device_attribute *attr, char *buf)
  58 {
  59         struct Scsi_Host *shost = class_to_shost(cdev);
  60         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
  61         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
  62
  63         if (pm8001_ha->chip_id == chip_8001) {
  64                 return snprintf(buf, PAGE_SIZE, "%d\n",
  65                         pm8001_ha->main_cfg_tbl.pm8001_tbl.interface_rev);
  66         } else {
  67                 return snprintf(buf, PAGE_SIZE, "%d\n",
  68                         pm8001_ha->main_cfg_tbl.pm80xx_tbl.interface_rev);
  69         }
  70 }
  71 static
  72 DEVICE_ATTR(interface_rev, S_IRUGO, pm8001_ctl_mpi_interface_rev_show, NULL);
  73
  74 /**
  75  * controller_fatal_error_show - check controller is under fatal err
  76  * @cdev: pointer to embedded class device
  77  * @attr: device attribute (unused)
  78  * @buf: the buffer returned
  79  *
  80  * A sysfs 'read only' shost attribute.
  81  */
  82 static ssize_t controller_fatal_error_show(struct device *cdev,
  83                 struct device_attribute *attr, char *buf)
  84 {
  85         struct Scsi_Host *shost = class_to_shost(cdev);
  86         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
  87         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
  88
  89         return snprintf(buf, PAGE_SIZE, "%d\n",
  90                         pm8001_ha->controller_fatal_error);
  91 }
  92 static DEVICE_ATTR_RO(controller_fatal_error);
  93
  94 /**
  95  * pm8001_ctl_fw_version_show - firmware version
  96  * @cdev: pointer to embedded class device
  97  * @attr: device attribute (unused)
  98  * @buf: the buffer returned
  99  *
 100  * A sysfs 'read-only' shost attribute.
 101  */
 102 static ssize_t pm8001_ctl_fw_version_show(struct device *cdev,
 103         struct device_attribute *attr, char *buf)
 104 {
 105         struct Scsi_Host *shost = class_to_shost(cdev);
 106         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 107         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 108
 109         if (pm8001_ha->chip_id == chip_8001) {
 110                 return snprintf(buf, PAGE_SIZE, "%02x.%02x.%02x.%02x\n",
 111                 (u8)(pm8001_ha->main_cfg_tbl.pm8001_tbl.firmware_rev >> 24),
 112                 (u8)(pm8001_ha->main_cfg_tbl.pm8001_tbl.firmware_rev >> 16),
 113                 (u8)(pm8001_ha->main_cfg_tbl.pm8001_tbl.firmware_rev >> 8),
 114                 (u8)(pm8001_ha->main_cfg_tbl.pm8001_tbl.firmware_rev));
 115         } else {
 116                 return snprintf(buf, PAGE_SIZE, "%02x.%02x.%02x.%02x\n",
 117                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.firmware_rev >> 24),
 118                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.firmware_rev >> 16),
 119                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.firmware_rev >> 8),
 120                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.firmware_rev));
 121         }
 122 }
 123 static DEVICE_ATTR(fw_version, S_IRUGO, pm8001_ctl_fw_version_show, NULL);
 124
 125 /**
 126  * pm8001_ctl_ila_version_show - ila version
 127  * @cdev: pointer to embedded class device
 128  * @attr: device attribute (unused)
 129  * @buf: the buffer returned
 130  *
 131  * A sysfs 'read-only' shost attribute.
 132  */
 133 static ssize_t pm8001_ctl_ila_version_show(struct device *cdev,
 134         struct device_attribute *attr, char *buf)
 135 {
 136         struct Scsi_Host *shost = class_to_shost(cdev);
 137         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 138         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 139
 140         if (pm8001_ha->chip_id != chip_8001) {
 141                 return snprintf(buf, PAGE_SIZE, "%02x.%02x.%02x.%02x\n",
 142                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.ila_version >> 24),
 143                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.ila_version >> 16),
 144                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.ila_version >> 8),
 145                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.ila_version));
 146         }
 147         return 0;
 148 }
 149 static DEVICE_ATTR(ila_version, 0444, pm8001_ctl_ila_version_show, NULL);
 150
 151 /**
 152  * pm8001_ctl_inactive_fw_version_show - Inacative firmware version number
 153  * @cdev: pointer to embedded class device
 154  * @attr: device attribute (unused)
 155  * @buf: the buffer returned
 156  *
 157  * A sysfs 'read-only' shost attribute.
 158  */
 159 static ssize_t pm8001_ctl_inactive_fw_version_show(struct device *cdev,
 160         struct device_attribute *attr, char *buf)
 161 {
 162         struct Scsi_Host *shost = class_to_shost(cdev);
 163         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 164         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 165
 166         if (pm8001_ha->chip_id != chip_8001) {
 167                 return snprintf(buf, PAGE_SIZE, "%02x.%02x.%02x.%02x\n",
 168                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.inc_fw_version >> 24),
 169                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.inc_fw_version >> 16),
 170                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.inc_fw_version >> 8),
 171                 (u8)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.inc_fw_version));
 172         }
 173         return 0;
 174 }
 175 static
 176 DEVICE_ATTR(inc_fw_ver, 0444, pm8001_ctl_inactive_fw_version_show, NULL);
 177
 178 /**
 179  * pm8001_ctl_max_out_io_show - max outstanding io supported
 180  * @cdev: pointer to embedded class device
 181  * @attr: device attribute (unused)
 182  * @buf: the buffer returned
 183  *
 184  * A sysfs 'read-only' shost attribute.
 185  */
 186 static ssize_t pm8001_ctl_max_out_io_show(struct device *cdev,
 187         struct device_attribute *attr, char *buf)
 188 {
 189         struct Scsi_Host *shost = class_to_shost(cdev);
 190         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 191         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 192
 193         if (pm8001_ha->chip_id == chip_8001) {
 194                 return snprintf(buf, PAGE_SIZE, "%d\n",
 195                         pm8001_ha->main_cfg_tbl.pm8001_tbl.max_out_io);
 196         } else {
 197                 return snprintf(buf, PAGE_SIZE, "%d\n",
 198                         pm8001_ha->main_cfg_tbl.pm80xx_tbl.max_out_io);
 199         }
 200 }
 201 static DEVICE_ATTR(max_out_io, S_IRUGO, pm8001_ctl_max_out_io_show, NULL);
 202 /**
 203  * pm8001_ctl_max_devices_show - max devices support
 204  * @cdev: pointer to embedded class device
 205  * @attr: device attribute (unused)
 206  * @buf: the buffer returned
 207  *
 208  * A sysfs 'read-only' shost attribute.
 209  */
 210 static ssize_t pm8001_ctl_max_devices_show(struct device *cdev,
 211         struct device_attribute *attr, char *buf)
 212 {
 213         struct Scsi_Host *shost = class_to_shost(cdev);
 214         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 215         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 216
 217         if (pm8001_ha->chip_id == chip_8001) {
 218                 return snprintf(buf, PAGE_SIZE, "%04d\n",
 219                         (u16)(pm8001_ha->main_cfg_tbl.pm8001_tbl.max_sgl >> 16)
 220                         );
 221         } else {
 222                 return snprintf(buf, PAGE_SIZE, "%04d\n",
 223                         (u16)(pm8001_ha->main_cfg_tbl.pm80xx_tbl.max_sgl >> 16)
 224                         );
 225         }
 226 }
 227 static DEVICE_ATTR(max_devices, S_IRUGO, pm8001_ctl_max_devices_show, NULL);
 228 /**
 229  * pm8001_ctl_max_sg_list_show - max sg list supported iff not 0.0 for no
 230  * hardware limitation
 231  * @cdev: pointer to embedded class device
 232  * @attr: device attribute (unused)
 233  * @buf: the buffer returned
 234  *
 235  * A sysfs 'read-only' shost attribute.
 236  */
 237 static ssize_t pm8001_ctl_max_sg_list_show(struct device *cdev,
 238         struct device_attribute *attr, char *buf)
 239 {
 240         struct Scsi_Host *shost = class_to_shost(cdev);
 241         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 242         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 243
 244         if (pm8001_ha->chip_id == chip_8001) {
 245                 return snprintf(buf, PAGE_SIZE, "%04d\n",
 246                         pm8001_ha->main_cfg_tbl.pm8001_tbl.max_sgl & 0x0000FFFF
 247                         );
 248         } else {
 249                 return snprintf(buf, PAGE_SIZE, "%04d\n",
 250                         pm8001_ha->main_cfg_tbl.pm80xx_tbl.max_sgl & 0x0000FFFF
 251                         );
 252         }
 253 }
 254 static DEVICE_ATTR(max_sg_list, S_IRUGO, pm8001_ctl_max_sg_list_show, NULL);
 255
 256 #define SAS_1_0 0x1
 257 #define SAS_1_1 0x2
 258 #define SAS_2_0 0x4
 259
 260 static ssize_t
 261 show_sas_spec_support_status(unsigned int mode, char *buf)
 262 {
 263         ssize_t len = 0;
 264
 265         if (mode & SAS_1_1)
 266                 len = sprintf(buf, "%s", "SAS1.1");
 267         if (mode & SAS_2_0)
 268                 len += sprintf(buf + len, "%s%s", len ? ", " : "", "SAS2.0");
 269         len += sprintf(buf + len, "\n");
 270
 271         return len;
 272 }
 273
 274 /**
 275  * pm8001_ctl_sas_spec_support_show - sas spec supported
 276  * @cdev: pointer to embedded class device
 277  * @attr: device attribute (unused)
 278  * @buf: the buffer returned
 279  *
 280  * A sysfs 'read-only' shost attribute.
 281  */
 282 static ssize_t pm8001_ctl_sas_spec_support_show(struct device *cdev,
 283         struct device_attribute *attr, char *buf)
 284 {
 285         unsigned int mode;
 286         struct Scsi_Host *shost = class_to_shost(cdev);
 287         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 288         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 289         /* fe000000 means supports SAS2.1 */
 290         if (pm8001_ha->chip_id == chip_8001)
 291                 mode = (pm8001_ha->main_cfg_tbl.pm8001_tbl.ctrl_cap_flag &
 292                                                         0xfe000000)>>25;
 293         else
 294                 /* fe000000 means supports SAS2.1 */
 295                 mode = (pm8001_ha->main_cfg_tbl.pm80xx_tbl.ctrl_cap_flag &
 296                                                         0xfe000000)>>25;
 297         return show_sas_spec_support_status(mode, buf);
 298 }
 299 static DEVICE_ATTR(sas_spec_support, S_IRUGO,
 300                    pm8001_ctl_sas_spec_support_show, NULL);
 301
 302 /**
 303  * pm8001_ctl_host_sas_address_show - sas address
 304  * @cdev: pointer to embedded class device
 305  * @attr: device attribute (unused)
 306  * @buf: the buffer returned
 307  *
 308  * This is the controller sas address
 309  *
 310  * A sysfs 'read-only' shost attribute.
 311  */
 312 static ssize_t pm8001_ctl_host_sas_address_show(struct device *cdev,
 313         struct device_attribute *attr, char *buf)
 314 {
 315         struct Scsi_Host *shost = class_to_shost(cdev);
 316         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 317         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 318         return snprintf(buf, PAGE_SIZE, "0x%016llx\n",
 319                         be64_to_cpu(*(__be64 *)pm8001_ha->sas_addr));
 320 }
 321 static DEVICE_ATTR(host_sas_address, S_IRUGO,
 322                    pm8001_ctl_host_sas_address_show, NULL);
 323
 324 /**
 325  * pm8001_ctl_logging_level_show - logging level
 326  * @cdev: pointer to embedded class device
 327  * @attr: device attribute (unused)
 328  * @buf: the buffer returned
 329  *
 330  * A sysfs 'read/write' shost attribute.
 331  */
 332 static ssize_t pm8001_ctl_logging_level_show(struct device *cdev,
 333         struct device_attribute *attr, char *buf)
 334 {
 335         struct Scsi_Host *shost = class_to_shost(cdev);
 336         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 337         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 338
 339         return snprintf(buf, PAGE_SIZE, "%08xh\n", pm8001_ha->logging_level);
 340 }
 341
 342 static ssize_t pm8001_ctl_logging_level_store(struct device *cdev,
 343         struct device_attribute *attr, const char *buf, size_t count)
 344 {
 345         struct Scsi_Host *shost = class_to_shost(cdev);
 346         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 347         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 348         int val = 0;
 349
 350         if (sscanf(buf, "%x", &val) != 1)
 351                 return -EINVAL;
 352
 353         pm8001_ha->logging_level = val;
 354         return strlen(buf);
 355 }
 356
 357 static DEVICE_ATTR(logging_level, S_IRUGO | S_IWUSR,
 358         pm8001_ctl_logging_level_show, pm8001_ctl_logging_level_store);
 359 /**
 360  * pm8001_ctl_aap_log_show - aap1 event log
 361  * @cdev: pointer to embedded class device
 362  * @attr: device attribute (unused)
 363  * @buf: the buffer returned
 364  *
 365  * A sysfs 'read-only' shost attribute.
 366  */
 367 static ssize_t pm8001_ctl_aap_log_show(struct device *cdev,
 368         struct device_attribute *attr, char *buf)
 369 {
 370         struct Scsi_Host *shost = class_to_shost(cdev);
 371         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 372         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 373         u8 *ptr = (u8 *)pm8001_ha->memoryMap.region[AAP1].virt_ptr;
 374         int i;
 375
 376         char *str = buf;
 377         int max = 2;
 378         for (i = 0; i < max; i++) {
 379                 str += sprintf(str, "0x%08x 0x%08x 0x%08x 0x%08x 0x%08x 0x%08x"
 380                                "0x%08x 0x%08x\n",
 381                                pm8001_ctl_aap1_memmap(ptr, i, 0),
 382                                pm8001_ctl_aap1_memmap(ptr, i, 4),
 383                                pm8001_ctl_aap1_memmap(ptr, i, 8),
 384                                pm8001_ctl_aap1_memmap(ptr, i, 12),
 385                                pm8001_ctl_aap1_memmap(ptr, i, 16),
 386                                pm8001_ctl_aap1_memmap(ptr, i, 20),
 387                                pm8001_ctl_aap1_memmap(ptr, i, 24),
 388                                pm8001_ctl_aap1_memmap(ptr, i, 28));
 389         }
 390
 391         return str - buf;
 392 }
 393 static DEVICE_ATTR(aap_log, S_IRUGO, pm8001_ctl_aap_log_show, NULL);
 394 /**
 395  * pm8001_ctl_ib_queue_log_show - Out bound Queue log
 396  * @cdev:pointer to embedded class device
 397  * @attr: device attribute (unused)
 398  * @buf: the buffer returned
 399  * A sysfs 'read-only' shost attribute.
 400  */
 401 static ssize_t pm8001_ctl_ib_queue_log_show(struct device *cdev,
 402         struct device_attribute *attr, char *buf)
 403 {
 404         struct Scsi_Host *shost = class_to_shost(cdev);
 405         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 406         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 407         int offset;
 408         char *str = buf;
 409         int start = 0;
 410         u32 ib_offset = pm8001_ha->ib_offset;
 411 #define IB_MEMMAP(c)    \
 412                 (*(u32 *)((u8 *)pm8001_ha->     \
 413                 memoryMap.region[ib_offset].virt_ptr +  \
 414                 pm8001_ha->evtlog_ib_offset + (c)))
 415
 416         for (offset = 0; offset < IB_OB_READ_TIMES; offset++) {
 417                 str += sprintf(str, "0x%08x\n", IB_MEMMAP(start));
 418                 start = start + 4;
 419         }
 420         pm8001_ha->evtlog_ib_offset += SYSFS_OFFSET;
 421         if (((pm8001_ha->evtlog_ib_offset) % (PM80XX_IB_OB_QUEUE_SIZE)) == 0)
 422                 pm8001_ha->evtlog_ib_offset = 0;
 423
 424         return str - buf;
 425 }
 426
 427 static DEVICE_ATTR(ib_log, S_IRUGO, pm8001_ctl_ib_queue_log_show, NULL);
 428 /**
 429  * pm8001_ctl_ob_queue_log_show - Out bound Queue log
 430  * @cdev:pointer to embedded class device
 431  * @attr: device attribute (unused)
 432  * @buf: the buffer returned
 433  * A sysfs 'read-only' shost attribute.
 434  */
 435
 436 static ssize_t pm8001_ctl_ob_queue_log_show(struct device *cdev,
 437         struct device_attribute *attr, char *buf)
 438 {
 439         struct Scsi_Host *shost = class_to_shost(cdev);
 440         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 441         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 442         int offset;
 443         char *str = buf;
 444         int start = 0;
 445         u32 ob_offset = pm8001_ha->ob_offset;
 446 #define OB_MEMMAP(c)    \
 447                 (*(u32 *)((u8 *)pm8001_ha->     \
 448                 memoryMap.region[ob_offset].virt_ptr +  \
 449                 pm8001_ha->evtlog_ob_offset + (c)))
 450
 451         for (offset = 0; offset < IB_OB_READ_TIMES; offset++) {
 452                 str += sprintf(str, "0x%08x\n", OB_MEMMAP(start));
 453                 start = start + 4;
 454         }
 455         pm8001_ha->evtlog_ob_offset += SYSFS_OFFSET;
 456         if (((pm8001_ha->evtlog_ob_offset) % (PM80XX_IB_OB_QUEUE_SIZE)) == 0)
 457                 pm8001_ha->evtlog_ob_offset = 0;
 458
 459         return str - buf;
 460 }
 461 static DEVICE_ATTR(ob_log, S_IRUGO, pm8001_ctl_ob_queue_log_show, NULL);
 462 /**
 463  * pm8001_ctl_bios_version_show - Bios version Display
 464  * @cdev:pointer to embedded class device
 465  * @attr: device attribute (unused)
 466  * @buf:the buffer returned
 467  * A sysfs 'read-only' shost attribute.
 468  */
 469 static ssize_t pm8001_ctl_bios_version_show(struct device *cdev,
 470         struct device_attribute *attr, char *buf)
 471 {
 472         struct Scsi_Host *shost = class_to_shost(cdev);
 473         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 474         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 475         char *str = buf;
 476         int bios_index;
 477         DECLARE_COMPLETION_ONSTACK(completion);
 478         struct pm8001_ioctl_payload payload;
 479
 480         pm8001_ha->nvmd_completion = &completion;
 481         payload.minor_function = 7;
 482         payload.offset = 0;
 483         payload.rd_length = 4096;
 484         payload.func_specific = kzalloc(4096, GFP_KERNEL);
 485         if (!payload.func_specific)
 486                 return -ENOMEM;
 487         if (PM8001_CHIP_DISP->get_nvmd_req(pm8001_ha, &payload)) {
 488                 kfree(payload.func_specific);
 489                 return -ENOMEM;
 490         }
 491         wait_for_completion(&completion);
 492         for (bios_index = BIOSOFFSET; bios_index < BIOS_OFFSET_LIMIT;
 493                 bios_index++)
 494                 str += sprintf(str, "%c",
 495                         *(payload.func_specific+bios_index));
 496         kfree(payload.func_specific);
 497         return str - buf;
 498 }
 499 static DEVICE_ATTR(bios_version, S_IRUGO, pm8001_ctl_bios_version_show, NULL);
 500 /**
 501  * event_log_size_show - event log size
 502  * @cdev: pointer to embedded class device
 503  * @attr: device attribute (unused)
 504  * @buf: the buffer returned
 505  *
 506  * A sysfs read  shost attribute.
 507  */
 508 static ssize_t event_log_size_show(struct device *cdev,
 509         struct device_attribute *attr, char *buf)
 510 {
 511         struct Scsi_Host *shost = class_to_shost(cdev);
 512         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 513         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 514
 515         return snprintf(buf, PAGE_SIZE, "%d\n",
 516                 pm8001_ha->main_cfg_tbl.pm80xx_tbl.event_log_size);
 517 }
 518 static DEVICE_ATTR_RO(event_log_size);
 519 /**
 520  * pm8001_ctl_iop_log_show - IOP event log
 521  * @cdev: pointer to embedded class device
 522  * @attr: device attribute (unused)
 523  * @buf: the buffer returned
 524  *
 525  * A sysfs 'read-only' shost attribute.
 526  */
 527 static ssize_t pm8001_ctl_iop_log_show(struct device *cdev,
 528         struct device_attribute *attr, char *buf)
 529 {
 530         struct Scsi_Host *shost = class_to_shost(cdev);
 531         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 532         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 533         char *str = buf;
 534         u32 read_size =
 535                 pm8001_ha->main_cfg_tbl.pm80xx_tbl.event_log_size / 1024;
 536         static u32 start, end, count;
 537         u32 max_read_times = 32;
 538         u32 max_count = (read_size * 1024) / (max_read_times * 4);
 539         u32 *temp = (u32 *)pm8001_ha->memoryMap.region[IOP].virt_ptr;
 540
 541         if ((count % max_count) == 0) {
 542                 start = 0;
 543                 end = max_read_times;
 544                 count = 0;
 545         } else {
 546                 start = end;
 547                 end = end + max_read_times;
 548         }
 549
 550         for (; start < end; start++)
 551                 str += sprintf(str, "%08x ", *(temp+start));
 552         count++;
 553         return str - buf;
 554 }
 555 static DEVICE_ATTR(iop_log, S_IRUGO, pm8001_ctl_iop_log_show, NULL);
 556
 557 /**
 558  ** pm8001_ctl_fatal_log_show - fatal error logging
 559  ** @cdev:pointer to embedded class device
 560  ** @attr: device attribute
 561  ** @buf: the buffer returned
 562  **
 563  ** A sysfs 'read-only' shost attribute.
 564  **/
 565
 566 static ssize_t pm8001_ctl_fatal_log_show(struct device *cdev,
 567         struct device_attribute *attr, char *buf)
 568 {
 569         ssize_t count;
 570
 571         count = pm80xx_get_fatal_dump(cdev, attr, buf);
 572         return count;
 573 }
 574
 575 static DEVICE_ATTR(fatal_log, S_IRUGO, pm8001_ctl_fatal_log_show, NULL);
 576
 577 /**
 578  ** non_fatal_log_show - non fatal error logging
 579  ** @cdev:pointer to embedded class device
 580  ** @attr: device attribute
 581  ** @buf: the buffer returned
 582  **
 583  ** A sysfs 'read-only' shost attribute.
 584  **/
 585 static ssize_t non_fatal_log_show(struct device *cdev,
 586         struct device_attribute *attr, char *buf)
 587 {
 588         u32 count;
 589
 590         count = pm80xx_get_non_fatal_dump(cdev, attr, buf);
 591         return count;
 592 }
 593 static DEVICE_ATTR_RO(non_fatal_log);
 594
 595 static ssize_t non_fatal_count_show(struct device *cdev,
 596                 struct device_attribute *attr, char *buf)
 597 {
 598         struct Scsi_Host *shost = class_to_shost(cdev);
 599         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 600         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 601
 602         return snprintf(buf, PAGE_SIZE, "%08x",
 603                         pm8001_ha->non_fatal_count);
 604 }
 605
 606 static ssize_t non_fatal_count_store(struct device *cdev,
 607                 struct device_attribute *attr, const char *buf, size_t count)
 608 {
 609         struct Scsi_Host *shost = class_to_shost(cdev);
 610         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 611         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 612         int val = 0;
 613
 614         if (kstrtoint(buf, 16, &val) != 0)
 615                 return -EINVAL;
 616
 617         pm8001_ha->non_fatal_count = val;
 618         return strlen(buf);
 619 }
 620 static DEVICE_ATTR_RW(non_fatal_count);
 621
 622 /**
 623  ** pm8001_ctl_gsm_log_show - gsm dump collection
 624  ** @cdev:pointer to embedded class device
 625  ** @attr: device attribute (unused)
 626  ** @buf: the buffer returned
 627  ** A sysfs 'read-only' shost attribute.
 628  **/
 629 static ssize_t pm8001_ctl_gsm_log_show(struct device *cdev,
 630         struct device_attribute *attr, char *buf)
 631 {
 632         ssize_t count;
 633
 634         count = pm8001_get_gsm_dump(cdev, SYSFS_OFFSET, buf);
 635         return count;
 636 }
 637
 638 static DEVICE_ATTR(gsm_log, S_IRUGO, pm8001_ctl_gsm_log_show, NULL);
 639
 640 #define FLASH_CMD_NONE      0x00
 641 #define FLASH_CMD_UPDATE    0x01
 642 #define FLASH_CMD_SET_NVMD    0x02
 643
 644 struct flash_command {
 645      u8      command[8];
 646      int     code;
 647 };
 648
 649 static const struct flash_command flash_command_table[] = {
 650      {"set_nvmd",    FLASH_CMD_SET_NVMD},
 651      {"update",      FLASH_CMD_UPDATE},
 652      {"",            FLASH_CMD_NONE} /* Last entry should be NULL. */
 653 };
 654
 655 struct error_fw {
 656      char    *reason;
 657      int     err_code;
 658 };
 659
 660 static const struct error_fw flash_error_table[] = {
 661      {"Failed to open fw image file",   FAIL_OPEN_BIOS_FILE},
 662      {"image header mismatch",          FLASH_UPDATE_HDR_ERR},
 663      {"image offset mismatch",          FLASH_UPDATE_OFFSET_ERR},
 664      {"image CRC Error",                FLASH_UPDATE_CRC_ERR},
 665      {"image length Error.",            FLASH_UPDATE_LENGTH_ERR},
 666      {"Failed to program flash chip",   FLASH_UPDATE_HW_ERR},
 667      {"Flash chip not supported.",      FLASH_UPDATE_DNLD_NOT_SUPPORTED},
 668      {"Flash update disabled.",         FLASH_UPDATE_DISABLED},
 669      {"Flash in progress",              FLASH_IN_PROGRESS},
 670      {"Image file size Error",          FAIL_FILE_SIZE},
 671      {"Input parameter error",          FAIL_PARAMETERS},
 672      {"Out of memory",                  FAIL_OUT_MEMORY},
 673      {"OK", 0}  /* Last entry err_code = 0. */
 674 };
 675
 676 static int pm8001_set_nvmd(struct pm8001_hba_info *pm8001_ha)
 677 {
 678         struct pm8001_ioctl_payload     *payload;
 679         DECLARE_COMPLETION_ONSTACK(completion);
 680         u8              *ioctlbuffer;
 681         u32             ret;
 682         u32             length = 1024 * 5 + sizeof(*payload) - 1;
 683
 684         if (pm8001_ha->fw_image->size > 4096) {
 685                 pm8001_ha->fw_status = FAIL_FILE_SIZE;
 686                 return -EFAULT;
 687         }
 688
 689         ioctlbuffer = kzalloc(length, GFP_KERNEL);
 690         if (!ioctlbuffer) {
 691                 pm8001_ha->fw_status = FAIL_OUT_MEMORY;
 692                 return -ENOMEM;
 693         }
 694         payload = (struct pm8001_ioctl_payload *)ioctlbuffer;
 695         memcpy((u8 *)&payload->func_specific, (u8 *)pm8001_ha->fw_image->data,
 696                                 pm8001_ha->fw_image->size);
 697         payload->wr_length = pm8001_ha->fw_image->size;
 698         payload->id = 0;
 699         payload->minor_function = 0x1;
 700         pm8001_ha->nvmd_completion = &completion;
 701         ret = PM8001_CHIP_DISP->set_nvmd_req(pm8001_ha, payload);
 702         if (ret) {
 703                 pm8001_ha->fw_status = FAIL_OUT_MEMORY;
 704                 goto out;
 705         }
 706         wait_for_completion(&completion);
 707 out:
 708         kfree(ioctlbuffer);
 709         return ret;
 710 }
 711
 712 static int pm8001_update_flash(struct pm8001_hba_info *pm8001_ha)
 713 {
 714         struct pm8001_ioctl_payload     *payload;
 715         DECLARE_COMPLETION_ONSTACK(completion);
 716         u8              *ioctlbuffer;
 717         struct fw_control_info  *fwControl;
 718         u32             partitionSize, partitionSizeTmp;
 719         u32             loopNumber, loopcount;
 720         struct pm8001_fw_image_header *image_hdr;
 721         u32             sizeRead = 0;
 722         u32             ret = 0;
 723         u32             length = 1024 * 16 + sizeof(*payload) - 1;
 724
 725         if (pm8001_ha->fw_image->size < 28) {
 726                 pm8001_ha->fw_status = FAIL_FILE_SIZE;
 727                 return -EFAULT;
 728         }
 729         ioctlbuffer = kzalloc(length, GFP_KERNEL);
 730         if (!ioctlbuffer) {
 731                 pm8001_ha->fw_status = FAIL_OUT_MEMORY;
 732                 return -ENOMEM;
 733         }
 734         image_hdr = (struct pm8001_fw_image_header *)pm8001_ha->fw_image->data;
 735         while (sizeRead < pm8001_ha->fw_image->size) {
 736                 partitionSizeTmp =
 737                         *(u32 *)((u8 *)&image_hdr->image_length + sizeRead);
 738                 partitionSize = be32_to_cpu(partitionSizeTmp);
 739                 loopcount = DIV_ROUND_UP(partitionSize + HEADER_LEN,
 740                                         IOCTL_BUF_SIZE);
 741                 for (loopNumber = 0; loopNumber < loopcount; loopNumber++) {
 742                         payload = (struct pm8001_ioctl_payload *)ioctlbuffer;
 743                         payload->wr_length = 1024*16;
 744                         payload->id = 0;
 745                         fwControl =
 746                               (struct fw_control_info *)&payload->func_specific;
 747                         fwControl->len = IOCTL_BUF_SIZE;   /* IN */
 748                         fwControl->size = partitionSize + HEADER_LEN;/* IN */
 749                         fwControl->retcode = 0;/* OUT */
 750                         fwControl->offset = loopNumber * IOCTL_BUF_SIZE;/*OUT */
 751
 752                 /* for the last chunk of data in case file size is not even with
 753                 4k, load only the rest*/
 754                 if (((loopcount-loopNumber) == 1) &&
 755                         ((partitionSize + HEADER_LEN) % IOCTL_BUF_SIZE)) {
 756                         fwControl->len =
 757                                 (partitionSize + HEADER_LEN) % IOCTL_BUF_SIZE;
 758                         memcpy((u8 *)fwControl->buffer,
 759                                 (u8 *)pm8001_ha->fw_image->data + sizeRead,
 760                                 (partitionSize + HEADER_LEN) % IOCTL_BUF_SIZE);
 761                         sizeRead +=
 762                                 (partitionSize + HEADER_LEN) % IOCTL_BUF_SIZE;
 763                 } else {
 764                         memcpy((u8 *)fwControl->buffer,
 765                                 (u8 *)pm8001_ha->fw_image->data + sizeRead,
 766                                 IOCTL_BUF_SIZE);
 767                         sizeRead += IOCTL_BUF_SIZE;
 768                 }
 769
 770                 pm8001_ha->nvmd_completion = &completion;
 771                 ret = PM8001_CHIP_DISP->fw_flash_update_req(pm8001_ha, payload);
 772                 if (ret) {
 773                         pm8001_ha->fw_status = FAIL_OUT_MEMORY;
 774                         goto out;
 775                 }
 776                 wait_for_completion(&completion);
 777                 if (fwControl->retcode > FLASH_UPDATE_IN_PROGRESS) {
 778                         pm8001_ha->fw_status = fwControl->retcode;
 779                         ret = -EFAULT;
 780                         goto out;
 781                 }
 782                 }
 783         }
 784 out:
 785         kfree(ioctlbuffer);
 786         return ret;
 787 }
 788 static ssize_t pm8001_store_update_fw(struct device *cdev,
 789                                       struct device_attribute *attr,
 790                                       const char *buf, size_t count)
 791 {
 792         struct Scsi_Host *shost = class_to_shost(cdev);
 793         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 794         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 795         char *cmd_ptr, *filename_ptr;
 796         int res, i;
 797         int flash_command = FLASH_CMD_NONE;
 798         int ret;
 799
 800         if (!capable(CAP_SYS_ADMIN))
 801                 return -EACCES;
 802
 803         /* this test protects us from running two flash processes at once,
 804          * so we should start with this test */
 805         if (pm8001_ha->fw_status == FLASH_IN_PROGRESS)
 806                 return -EINPROGRESS;
 807         pm8001_ha->fw_status = FLASH_IN_PROGRESS;
 808
 809         cmd_ptr = kcalloc(count, 2, GFP_KERNEL);
 810         if (!cmd_ptr) {
 811                 pm8001_ha->fw_status = FAIL_OUT_MEMORY;
 812                 return -ENOMEM;
 813         }
 814
 815         filename_ptr = cmd_ptr + count;
 816         res = sscanf(buf, "%s %s", cmd_ptr, filename_ptr);
 817         if (res != 2) {
 818                 pm8001_ha->fw_status = FAIL_PARAMETERS;
 819                 ret = -EINVAL;
 820                 goto out;
 821         }
 822
 823         for (i = 0; flash_command_table[i].code != FLASH_CMD_NONE; i++) {
 824                 if (!memcmp(flash_command_table[i].command,
 825                                  cmd_ptr, strlen(cmd_ptr))) {
 826                         flash_command = flash_command_table[i].code;
 827                         break;
 828                 }
 829         }
 830         if (flash_command == FLASH_CMD_NONE) {
 831                 pm8001_ha->fw_status = FAIL_PARAMETERS;
 832                 ret = -EINVAL;
 833                 goto out;
 834         }
 835
 836         ret = request_firmware(&pm8001_ha->fw_image,
 837                                filename_ptr,
 838                                pm8001_ha->dev);
 839
 840         if (ret) {
 841                 pm8001_dbg(pm8001_ha, FAIL,
 842                            "Failed to load firmware image file %s, error %d\n",
 843                            filename_ptr, ret);
 844                 pm8001_ha->fw_status = FAIL_OPEN_BIOS_FILE;
 845                 goto out;
 846         }
 847
 848         if (FLASH_CMD_UPDATE == flash_command)
 849                 ret = pm8001_update_flash(pm8001_ha);
 850         else
 851                 ret = pm8001_set_nvmd(pm8001_ha);
 852
 853         release_firmware(pm8001_ha->fw_image);
 854 out:
 855         kfree(cmd_ptr);
 856
 857         if (ret)
 858                 return ret;
 859
 860         pm8001_ha->fw_status = FLASH_OK;
 861         return count;
 862 }
 863
 864 static ssize_t pm8001_show_update_fw(struct device *cdev,
 865                                      struct device_attribute *attr, char *buf)
 866 {
 867         int i;
 868         struct Scsi_Host *shost = class_to_shost(cdev);
 869         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 870         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 871
 872         for (i = 0; flash_error_table[i].err_code != 0; i++) {
 873                 if (flash_error_table[i].err_code == pm8001_ha->fw_status)
 874                         break;
 875         }
 876         if (pm8001_ha->fw_status != FLASH_IN_PROGRESS)
 877                 pm8001_ha->fw_status = FLASH_OK;
 878
 879         return snprintf(buf, PAGE_SIZE, "status=%x %s\n",
 880                         flash_error_table[i].err_code,
 881                         flash_error_table[i].reason);
 882 }
 883 static DEVICE_ATTR(update_fw, S_IRUGO|S_IWUSR|S_IWGRP,
 884         pm8001_show_update_fw, pm8001_store_update_fw);
 885
 886 /**
 887  * ctl_mpi_state_show - controller MPI state check
 888  * @cdev: pointer to embedded class device
 889  * @buf: the buffer returned
 890  *
 891  * A sysfs 'read-only' shost attribute.
 892  */
 893
 894 static const char *const mpiStateText[] = {
 895         "MPI is not initialized",
 896         "MPI is successfully initialized",
 897         "MPI termination is in progress",
 898         "MPI initialization failed with error in [31:16]"
 899 };
 900
 901 static ssize_t ctl_mpi_state_show(struct device *cdev,
 902                 struct device_attribute *attr, char *buf)
 903 {
 904         struct Scsi_Host *shost = class_to_shost(cdev);
 905         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 906         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 907         unsigned int mpidw0;
 908
 909         mpidw0 = pm8001_mr32(pm8001_ha->general_stat_tbl_addr, 0);
 910         return sysfs_emit(buf, "%s\n", mpiStateText[mpidw0 & 0x0003]);
 911 }
 912 static DEVICE_ATTR_RO(ctl_mpi_state);
 913
 914 /**
 915  * ctl_hmi_error_show - controller MPI initialization fails
 916  * @cdev: pointer to embedded class device
 917  * @buf: the buffer returned
 918  *
 919  * A sysfs 'read-only' shost attribute.
 920  */
 921
 922 static ssize_t ctl_hmi_error_show(struct device *cdev,
 923                 struct device_attribute *attr, char *buf)
 924 {
 925         struct Scsi_Host *shost = class_to_shost(cdev);
 926         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 927         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 928         unsigned int mpidw0;
 929
 930         mpidw0 = pm8001_mr32(pm8001_ha->general_stat_tbl_addr, 0);
 931         return sysfs_emit(buf, "0x%08x\n", (mpidw0 >> 16));
 932 }
 933 static DEVICE_ATTR_RO(ctl_hmi_error);
 934
 935 /**
 936  * ctl_raae_count_show - controller raae count check
 937  * @cdev: pointer to embedded class device
 938  * @buf: the buffer returned
 939  *
 940  * A sysfs 'read-only' shost attribute.
 941  */
 942
 943 static ssize_t ctl_raae_count_show(struct device *cdev,
 944                 struct device_attribute *attr, char *buf)
 945 {
 946         struct Scsi_Host *shost = class_to_shost(cdev);
 947         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 948         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 949         unsigned int raaecnt;
 950
 951         raaecnt = pm8001_mr32(pm8001_ha->general_stat_tbl_addr, 12);
 952         return sysfs_emit(buf, "0x%08x\n", raaecnt);
 953 }
 954 static DEVICE_ATTR_RO(ctl_raae_count);
 955
 956 /**
 957  * ctl_iop0_count_show - controller iop0 count check
 958  * @cdev: pointer to embedded class device
 959  * @buf: the buffer returned
 960  *
 961  * A sysfs 'read-only' shost attribute.
 962  */
 963
 964 static ssize_t ctl_iop0_count_show(struct device *cdev,
 965                 struct device_attribute *attr, char *buf)
 966 {
 967         struct Scsi_Host *shost = class_to_shost(cdev);
 968         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 969         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 970         unsigned int iop0cnt;
 971
 972         iop0cnt = pm8001_mr32(pm8001_ha->general_stat_tbl_addr, 16);
 973         return sysfs_emit(buf, "0x%08x\n", iop0cnt);
 974 }
 975 static DEVICE_ATTR_RO(ctl_iop0_count);
 976
 977 /**
 978  * ctl_iop1_count_show - controller iop1 count check
 979  * @cdev: pointer to embedded class device
 980  * @buf: the buffer returned
 981  *
 982  * A sysfs 'read-only' shost attribute.
 983  */
 984
 985 static ssize_t ctl_iop1_count_show(struct device *cdev,
 986                 struct device_attribute *attr, char *buf)
 987 {
 988         struct Scsi_Host *shost = class_to_shost(cdev);
 989         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 990         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 991         unsigned int iop1cnt;
 992
 993         iop1cnt = pm8001_mr32(pm8001_ha->general_stat_tbl_addr, 20);
 994         return sysfs_emit(buf, "0x%08x\n", iop1cnt);
 995
 996 }
 997 static DEVICE_ATTR_RO(ctl_iop1_count);
 998
 999 struct device_attribute *pm8001_host_attrs[] = {
1000         &dev_attr_interface_rev,
1001         &dev_attr_controller_fatal_error,
1002         &dev_attr_fw_version,
1003         &dev_attr_update_fw,
1004         &dev_attr_aap_log,
1005         &dev_attr_iop_log,
1006         &dev_attr_fatal_log,
1007         &dev_attr_non_fatal_log,
1008         &dev_attr_non_fatal_count,
1009         &dev_attr_gsm_log,
1010         &dev_attr_max_out_io,
1011         &dev_attr_max_devices,
1012         &dev_attr_max_sg_list,
1013         &dev_attr_sas_spec_support,
1014         &dev_attr_logging_level,
1015         &dev_attr_event_log_size,
1016         &dev_attr_host_sas_address,
1017         &dev_attr_bios_version,
1018         &dev_attr_ib_log,
1019         &dev_attr_ob_log,
1020         &dev_attr_ila_version,
1021         &dev_attr_inc_fw_ver,
1022         &dev_attr_ctl_mpi_state,
1023         &dev_attr_ctl_hmi_error,
1024         &dev_attr_ctl_raae_count,
1025         &dev_attr_ctl_iop0_count,
1026         &dev_attr_ctl_iop1_count,
1027         NULL,
1028 };
1029