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 - Inactive 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  *
 400  * A sysfs 'read-only' shost attribute.
 401  */
 402 static ssize_t pm8001_ctl_ib_queue_log_show(struct device *cdev,
 403         struct device_attribute *attr, char *buf)
 404 {
 405         struct Scsi_Host *shost = class_to_shost(cdev);
 406         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 407         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 408         int offset;
 409         char *str = buf;
 410         int start = 0;
 411         u32 ib_offset = pm8001_ha->ib_offset;
 412 #define IB_MEMMAP(c)    \
 413                 (*(u32 *)((u8 *)pm8001_ha->     \
 414                 memoryMap.region[ib_offset].virt_ptr +  \
 415                 pm8001_ha->evtlog_ib_offset + (c)))
 416
 417         for (offset = 0; offset < IB_OB_READ_TIMES; offset++) {
 418                 str += sprintf(str, "0x%08x\n", IB_MEMMAP(start));
 419                 start = start + 4;
 420         }
 421         pm8001_ha->evtlog_ib_offset += SYSFS_OFFSET;
 422         if (((pm8001_ha->evtlog_ib_offset) % (PM80XX_IB_OB_QUEUE_SIZE)) == 0)
 423                 pm8001_ha->evtlog_ib_offset = 0;
 424
 425         return str - buf;
 426 }
 427
 428 static DEVICE_ATTR(ib_log, S_IRUGO, pm8001_ctl_ib_queue_log_show, NULL);
 429 /**
 430  * pm8001_ctl_ob_queue_log_show - Out bound Queue log
 431  * @cdev:pointer to embedded class device
 432  * @attr: device attribute (unused)
 433  * @buf: the buffer returned
 434  *
 435  * A sysfs 'read-only' shost attribute.
 436  */
 437
 438 static ssize_t pm8001_ctl_ob_queue_log_show(struct device *cdev,
 439         struct device_attribute *attr, char *buf)
 440 {
 441         struct Scsi_Host *shost = class_to_shost(cdev);
 442         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 443         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 444         int offset;
 445         char *str = buf;
 446         int start = 0;
 447         u32 ob_offset = pm8001_ha->ob_offset;
 448 #define OB_MEMMAP(c)    \
 449                 (*(u32 *)((u8 *)pm8001_ha->     \
 450                 memoryMap.region[ob_offset].virt_ptr +  \
 451                 pm8001_ha->evtlog_ob_offset + (c)))
 452
 453         for (offset = 0; offset < IB_OB_READ_TIMES; offset++) {
 454                 str += sprintf(str, "0x%08x\n", OB_MEMMAP(start));
 455                 start = start + 4;
 456         }
 457         pm8001_ha->evtlog_ob_offset += SYSFS_OFFSET;
 458         if (((pm8001_ha->evtlog_ob_offset) % (PM80XX_IB_OB_QUEUE_SIZE)) == 0)
 459                 pm8001_ha->evtlog_ob_offset = 0;
 460
 461         return str - buf;
 462 }
 463 static DEVICE_ATTR(ob_log, S_IRUGO, pm8001_ctl_ob_queue_log_show, NULL);
 464 /**
 465  * pm8001_ctl_bios_version_show - Bios version Display
 466  * @cdev:pointer to embedded class device
 467  * @attr: device attribute (unused)
 468  * @buf:the buffer returned
 469  *
 470  * A sysfs 'read-only' shost attribute.
 471  */
 472 static ssize_t pm8001_ctl_bios_version_show(struct device *cdev,
 473         struct device_attribute *attr, char *buf)
 474 {
 475         struct Scsi_Host *shost = class_to_shost(cdev);
 476         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 477         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 478         char *str = buf;
 479         int bios_index;
 480         DECLARE_COMPLETION_ONSTACK(completion);
 481         struct pm8001_ioctl_payload payload;
 482
 483         pm8001_ha->nvmd_completion = &completion;
 484         payload.minor_function = 7;
 485         payload.offset = 0;
 486         payload.rd_length = 4096;
 487         payload.func_specific = kzalloc(4096, GFP_KERNEL);
 488         if (!payload.func_specific)
 489                 return -ENOMEM;
 490         if (PM8001_CHIP_DISP->get_nvmd_req(pm8001_ha, &payload)) {
 491                 kfree(payload.func_specific);
 492                 return -ENOMEM;
 493         }
 494         wait_for_completion(&completion);
 495         for (bios_index = BIOSOFFSET; bios_index < BIOS_OFFSET_LIMIT;
 496                 bios_index++)
 497                 str += sprintf(str, "%c",
 498                         *(payload.func_specific+bios_index));
 499         kfree(payload.func_specific);
 500         return str - buf;
 501 }
 502 static DEVICE_ATTR(bios_version, S_IRUGO, pm8001_ctl_bios_version_show, NULL);
 503 /**
 504  * event_log_size_show - event log size
 505  * @cdev: pointer to embedded class device
 506  * @attr: device attribute (unused)
 507  * @buf: the buffer returned
 508  *
 509  * A sysfs read  shost attribute.
 510  */
 511 static ssize_t event_log_size_show(struct device *cdev,
 512         struct device_attribute *attr, char *buf)
 513 {
 514         struct Scsi_Host *shost = class_to_shost(cdev);
 515         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 516         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 517
 518         return snprintf(buf, PAGE_SIZE, "%d\n",
 519                 pm8001_ha->main_cfg_tbl.pm80xx_tbl.event_log_size);
 520 }
 521 static DEVICE_ATTR_RO(event_log_size);
 522 /**
 523  * pm8001_ctl_iop_log_show - IOP event log
 524  * @cdev: pointer to embedded class device
 525  * @attr: device attribute (unused)
 526  * @buf: the buffer returned
 527  *
 528  * A sysfs 'read-only' shost attribute.
 529  */
 530 static ssize_t pm8001_ctl_iop_log_show(struct device *cdev,
 531         struct device_attribute *attr, char *buf)
 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 *str = buf;
 537         u32 read_size =
 538                 pm8001_ha->main_cfg_tbl.pm80xx_tbl.event_log_size / 1024;
 539         static u32 start, end, count;
 540         u32 max_read_times = 32;
 541         u32 max_count = (read_size * 1024) / (max_read_times * 4);
 542         u32 *temp = (u32 *)pm8001_ha->memoryMap.region[IOP].virt_ptr;
 543
 544         if ((count % max_count) == 0) {
 545                 start = 0;
 546                 end = max_read_times;
 547                 count = 0;
 548         } else {
 549                 start = end;
 550                 end = end + max_read_times;
 551         }
 552
 553         for (; start < end; start++)
 554                 str += sprintf(str, "%08x ", *(temp+start));
 555         count++;
 556         return str - buf;
 557 }
 558 static DEVICE_ATTR(iop_log, S_IRUGO, pm8001_ctl_iop_log_show, NULL);
 559
 560 /**
 561  * pm8001_ctl_fatal_log_show - fatal error logging
 562  * @cdev:pointer to embedded class device
 563  * @attr: device attribute
 564  * @buf: the buffer returned
 565  *
 566  * A sysfs 'read-only' shost attribute.
 567  */
 568
 569 static ssize_t pm8001_ctl_fatal_log_show(struct device *cdev,
 570         struct device_attribute *attr, char *buf)
 571 {
 572         ssize_t count;
 573
 574         count = pm80xx_get_fatal_dump(cdev, attr, buf);
 575         return count;
 576 }
 577
 578 static DEVICE_ATTR(fatal_log, S_IRUGO, pm8001_ctl_fatal_log_show, NULL);
 579
 580 /**
 581  * non_fatal_log_show - non fatal error logging
 582  * @cdev:pointer to embedded class device
 583  * @attr: device attribute
 584  * @buf: the buffer returned
 585  *
 586  * A sysfs 'read-only' shost attribute.
 587  */
 588 static ssize_t non_fatal_log_show(struct device *cdev,
 589         struct device_attribute *attr, char *buf)
 590 {
 591         u32 count;
 592
 593         count = pm80xx_get_non_fatal_dump(cdev, attr, buf);
 594         return count;
 595 }
 596 static DEVICE_ATTR_RO(non_fatal_log);
 597
 598 static ssize_t non_fatal_count_show(struct device *cdev,
 599                 struct device_attribute *attr, char *buf)
 600 {
 601         struct Scsi_Host *shost = class_to_shost(cdev);
 602         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 603         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 604
 605         return snprintf(buf, PAGE_SIZE, "%08x",
 606                         pm8001_ha->non_fatal_count);
 607 }
 608
 609 static ssize_t non_fatal_count_store(struct device *cdev,
 610                 struct device_attribute *attr, const char *buf, size_t count)
 611 {
 612         struct Scsi_Host *shost = class_to_shost(cdev);
 613         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 614         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 615         int val = 0;
 616
 617         if (kstrtoint(buf, 16, &val) != 0)
 618                 return -EINVAL;
 619
 620         pm8001_ha->non_fatal_count = val;
 621         return strlen(buf);
 622 }
 623 static DEVICE_ATTR_RW(non_fatal_count);
 624
 625 /**
 626  * pm8001_ctl_gsm_log_show - gsm dump collection
 627  * @cdev:pointer to embedded class device
 628  * @attr: device attribute (unused)
 629  * @buf: the buffer returned
 630  *
 631  * A sysfs 'read-only' shost attribute.
 632  */
 633 static ssize_t pm8001_ctl_gsm_log_show(struct device *cdev,
 634         struct device_attribute *attr, char *buf)
 635 {
 636         ssize_t count;
 637
 638         count = pm8001_get_gsm_dump(cdev, SYSFS_OFFSET, buf);
 639         return count;
 640 }
 641
 642 static DEVICE_ATTR(gsm_log, S_IRUGO, pm8001_ctl_gsm_log_show, NULL);
 643
 644 #define FLASH_CMD_NONE      0x00
 645 #define FLASH_CMD_UPDATE    0x01
 646 #define FLASH_CMD_SET_NVMD    0x02
 647
 648 struct flash_command {
 649      u8      command[8];
 650      int     code;
 651 };
 652
 653 static const struct flash_command flash_command_table[] = {
 654      {"set_nvmd",    FLASH_CMD_SET_NVMD},
 655      {"update",      FLASH_CMD_UPDATE},
 656      {"",            FLASH_CMD_NONE} /* Last entry should be NULL. */
 657 };
 658
 659 struct error_fw {
 660      char    *reason;
 661      int     err_code;
 662 };
 663
 664 static const struct error_fw flash_error_table[] = {
 665      {"Failed to open fw image file",   FAIL_OPEN_BIOS_FILE},
 666      {"image header mismatch",          FLASH_UPDATE_HDR_ERR},
 667      {"image offset mismatch",          FLASH_UPDATE_OFFSET_ERR},
 668      {"image CRC Error",                FLASH_UPDATE_CRC_ERR},
 669      {"image length Error.",            FLASH_UPDATE_LENGTH_ERR},
 670      {"Failed to program flash chip",   FLASH_UPDATE_HW_ERR},
 671      {"Flash chip not supported.",      FLASH_UPDATE_DNLD_NOT_SUPPORTED},
 672      {"Flash update disabled.",         FLASH_UPDATE_DISABLED},
 673      {"Flash in progress",              FLASH_IN_PROGRESS},
 674      {"Image file size Error",          FAIL_FILE_SIZE},
 675      {"Input parameter error",          FAIL_PARAMETERS},
 676      {"Out of memory",                  FAIL_OUT_MEMORY},
 677      {"OK", 0}  /* Last entry err_code = 0. */
 678 };
 679
 680 static int pm8001_set_nvmd(struct pm8001_hba_info *pm8001_ha)
 681 {
 682         struct pm8001_ioctl_payload     *payload;
 683         DECLARE_COMPLETION_ONSTACK(completion);
 684         u8              *ioctlbuffer;
 685         u32             ret;
 686         u32             length = 1024 * 5 + sizeof(*payload) - 1;
 687
 688         if (pm8001_ha->fw_image->size > 4096) {
 689                 pm8001_ha->fw_status = FAIL_FILE_SIZE;
 690                 return -EFAULT;
 691         }
 692
 693         ioctlbuffer = kzalloc(length, GFP_KERNEL);
 694         if (!ioctlbuffer) {
 695                 pm8001_ha->fw_status = FAIL_OUT_MEMORY;
 696                 return -ENOMEM;
 697         }
 698         payload = (struct pm8001_ioctl_payload *)ioctlbuffer;
 699         memcpy((u8 *)&payload->func_specific, (u8 *)pm8001_ha->fw_image->data,
 700                                 pm8001_ha->fw_image->size);
 701         payload->wr_length = pm8001_ha->fw_image->size;
 702         payload->id = 0;
 703         payload->minor_function = 0x1;
 704         pm8001_ha->nvmd_completion = &completion;
 705         ret = PM8001_CHIP_DISP->set_nvmd_req(pm8001_ha, payload);
 706         if (ret) {
 707                 pm8001_ha->fw_status = FAIL_OUT_MEMORY;
 708                 goto out;
 709         }
 710         wait_for_completion(&completion);
 711 out:
 712         kfree(ioctlbuffer);
 713         return ret;
 714 }
 715
 716 static int pm8001_update_flash(struct pm8001_hba_info *pm8001_ha)
 717 {
 718         struct pm8001_ioctl_payload     *payload;
 719         DECLARE_COMPLETION_ONSTACK(completion);
 720         u8              *ioctlbuffer;
 721         struct fw_control_info  *fwControl;
 722         u32             partitionSize, partitionSizeTmp;
 723         u32             loopNumber, loopcount;
 724         struct pm8001_fw_image_header *image_hdr;
 725         u32             sizeRead = 0;
 726         u32             ret = 0;
 727         u32             length = 1024 * 16 + sizeof(*payload) - 1;
 728
 729         if (pm8001_ha->fw_image->size < 28) {
 730                 pm8001_ha->fw_status = FAIL_FILE_SIZE;
 731                 return -EFAULT;
 732         }
 733         ioctlbuffer = kzalloc(length, GFP_KERNEL);
 734         if (!ioctlbuffer) {
 735                 pm8001_ha->fw_status = FAIL_OUT_MEMORY;
 736                 return -ENOMEM;
 737         }
 738         image_hdr = (struct pm8001_fw_image_header *)pm8001_ha->fw_image->data;
 739         while (sizeRead < pm8001_ha->fw_image->size) {
 740                 partitionSizeTmp =
 741                         *(u32 *)((u8 *)&image_hdr->image_length + sizeRead);
 742                 partitionSize = be32_to_cpu(partitionSizeTmp);
 743                 loopcount = DIV_ROUND_UP(partitionSize + HEADER_LEN,
 744                                         IOCTL_BUF_SIZE);
 745                 for (loopNumber = 0; loopNumber < loopcount; loopNumber++) {
 746                         payload = (struct pm8001_ioctl_payload *)ioctlbuffer;
 747                         payload->wr_length = 1024*16;
 748                         payload->id = 0;
 749                         fwControl =
 750                               (struct fw_control_info *)&payload->func_specific;
 751                         fwControl->len = IOCTL_BUF_SIZE;   /* IN */
 752                         fwControl->size = partitionSize + HEADER_LEN;/* IN */
 753                         fwControl->retcode = 0;/* OUT */
 754                         fwControl->offset = loopNumber * IOCTL_BUF_SIZE;/*OUT */
 755
 756                 /* for the last chunk of data in case file size is not even with
 757                 4k, load only the rest*/
 758                 if (((loopcount-loopNumber) == 1) &&
 759                         ((partitionSize + HEADER_LEN) % IOCTL_BUF_SIZE)) {
 760                         fwControl->len =
 761                                 (partitionSize + HEADER_LEN) % IOCTL_BUF_SIZE;
 762                         memcpy((u8 *)fwControl->buffer,
 763                                 (u8 *)pm8001_ha->fw_image->data + sizeRead,
 764                                 (partitionSize + HEADER_LEN) % IOCTL_BUF_SIZE);
 765                         sizeRead +=
 766                                 (partitionSize + HEADER_LEN) % IOCTL_BUF_SIZE;
 767                 } else {
 768                         memcpy((u8 *)fwControl->buffer,
 769                                 (u8 *)pm8001_ha->fw_image->data + sizeRead,
 770                                 IOCTL_BUF_SIZE);
 771                         sizeRead += IOCTL_BUF_SIZE;
 772                 }
 773
 774                 pm8001_ha->nvmd_completion = &completion;
 775                 ret = PM8001_CHIP_DISP->fw_flash_update_req(pm8001_ha, payload);
 776                 if (ret) {
 777                         pm8001_ha->fw_status = FAIL_OUT_MEMORY;
 778                         goto out;
 779                 }
 780                 wait_for_completion(&completion);
 781                 if (fwControl->retcode > FLASH_UPDATE_IN_PROGRESS) {
 782                         pm8001_ha->fw_status = fwControl->retcode;
 783                         ret = -EFAULT;
 784                         goto out;
 785                 }
 786                 }
 787         }
 788 out:
 789         kfree(ioctlbuffer);
 790         return ret;
 791 }
 792 static ssize_t pm8001_store_update_fw(struct device *cdev,
 793                                       struct device_attribute *attr,
 794                                       const char *buf, size_t count)
 795 {
 796         struct Scsi_Host *shost = class_to_shost(cdev);
 797         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 798         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 799         char *cmd_ptr, *filename_ptr;
 800         int res, i;
 801         int flash_command = FLASH_CMD_NONE;
 802         int ret;
 803
 804         if (!capable(CAP_SYS_ADMIN))
 805                 return -EACCES;
 806
 807         /* this test protects us from running two flash processes at once,
 808          * so we should start with this test */
 809         if (pm8001_ha->fw_status == FLASH_IN_PROGRESS)
 810                 return -EINPROGRESS;
 811         pm8001_ha->fw_status = FLASH_IN_PROGRESS;
 812
 813         cmd_ptr = kcalloc(count, 2, GFP_KERNEL);
 814         if (!cmd_ptr) {
 815                 pm8001_ha->fw_status = FAIL_OUT_MEMORY;
 816                 return -ENOMEM;
 817         }
 818
 819         filename_ptr = cmd_ptr + count;
 820         res = sscanf(buf, "%s %s", cmd_ptr, filename_ptr);
 821         if (res != 2) {
 822                 pm8001_ha->fw_status = FAIL_PARAMETERS;
 823                 ret = -EINVAL;
 824                 goto out;
 825         }
 826
 827         for (i = 0; flash_command_table[i].code != FLASH_CMD_NONE; i++) {
 828                 if (!memcmp(flash_command_table[i].command,
 829                                  cmd_ptr, strlen(cmd_ptr))) {
 830                         flash_command = flash_command_table[i].code;
 831                         break;
 832                 }
 833         }
 834         if (flash_command == FLASH_CMD_NONE) {
 835                 pm8001_ha->fw_status = FAIL_PARAMETERS;
 836                 ret = -EINVAL;
 837                 goto out;
 838         }
 839
 840         ret = request_firmware(&pm8001_ha->fw_image,
 841                                filename_ptr,
 842                                pm8001_ha->dev);
 843
 844         if (ret) {
 845                 pm8001_dbg(pm8001_ha, FAIL,
 846                            "Failed to load firmware image file %s, error %d\n",
 847                            filename_ptr, ret);
 848                 pm8001_ha->fw_status = FAIL_OPEN_BIOS_FILE;
 849                 goto out;
 850         }
 851
 852         if (FLASH_CMD_UPDATE == flash_command)
 853                 ret = pm8001_update_flash(pm8001_ha);
 854         else
 855                 ret = pm8001_set_nvmd(pm8001_ha);
 856
 857         release_firmware(pm8001_ha->fw_image);
 858 out:
 859         kfree(cmd_ptr);
 860
 861         if (ret)
 862                 return ret;
 863
 864         pm8001_ha->fw_status = FLASH_OK;
 865         return count;
 866 }
 867
 868 static ssize_t pm8001_show_update_fw(struct device *cdev,
 869                                      struct device_attribute *attr, char *buf)
 870 {
 871         int i;
 872         struct Scsi_Host *shost = class_to_shost(cdev);
 873         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 874         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 875
 876         for (i = 0; flash_error_table[i].err_code != 0; i++) {
 877                 if (flash_error_table[i].err_code == pm8001_ha->fw_status)
 878                         break;
 879         }
 880         if (pm8001_ha->fw_status != FLASH_IN_PROGRESS)
 881                 pm8001_ha->fw_status = FLASH_OK;
 882
 883         return snprintf(buf, PAGE_SIZE, "status=%x %s\n",
 884                         flash_error_table[i].err_code,
 885                         flash_error_table[i].reason);
 886 }
 887 static DEVICE_ATTR(update_fw, S_IRUGO|S_IWUSR|S_IWGRP,
 888         pm8001_show_update_fw, pm8001_store_update_fw);
 889
 890 /**
 891  * ctl_mpi_state_show - controller MPI state check
 892  * @cdev: pointer to embedded class device
 893  * @buf: the buffer returned
 894  *
 895  * A sysfs 'read-only' shost attribute.
 896  */
 897
 898 static const char *const mpiStateText[] = {
 899         "MPI is not initialized",
 900         "MPI is successfully initialized",
 901         "MPI termination is in progress",
 902         "MPI initialization failed with error in [31:16]"
 903 };
 904
 905 static ssize_t ctl_mpi_state_show(struct device *cdev,
 906                 struct device_attribute *attr, char *buf)
 907 {
 908         struct Scsi_Host *shost = class_to_shost(cdev);
 909         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 910         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 911         unsigned int mpidw0;
 912
 913         mpidw0 = pm8001_mr32(pm8001_ha->general_stat_tbl_addr, 0);
 914         return sysfs_emit(buf, "%s\n", mpiStateText[mpidw0 & 0x0003]);
 915 }
 916 static DEVICE_ATTR_RO(ctl_mpi_state);
 917
 918 /**
 919  * ctl_hmi_error_show - controller MPI initialization fails
 920  * @cdev: pointer to embedded class device
 921  * @buf: the buffer returned
 922  *
 923  * A sysfs 'read-only' shost attribute.
 924  */
 925
 926 static ssize_t ctl_hmi_error_show(struct device *cdev,
 927                 struct device_attribute *attr, char *buf)
 928 {
 929         struct Scsi_Host *shost = class_to_shost(cdev);
 930         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 931         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 932         unsigned int mpidw0;
 933
 934         mpidw0 = pm8001_mr32(pm8001_ha->general_stat_tbl_addr, 0);
 935         return sysfs_emit(buf, "0x%08x\n", (mpidw0 >> 16));
 936 }
 937 static DEVICE_ATTR_RO(ctl_hmi_error);
 938
 939 /**
 940  * ctl_raae_count_show - controller raae count check
 941  * @cdev: pointer to embedded class device
 942  * @buf: the buffer returned
 943  *
 944  * A sysfs 'read-only' shost attribute.
 945  */
 946
 947 static ssize_t ctl_raae_count_show(struct device *cdev,
 948                 struct device_attribute *attr, char *buf)
 949 {
 950         struct Scsi_Host *shost = class_to_shost(cdev);
 951         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 952         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 953         unsigned int raaecnt;
 954
 955         raaecnt = pm8001_mr32(pm8001_ha->general_stat_tbl_addr, 12);
 956         return sysfs_emit(buf, "0x%08x\n", raaecnt);
 957 }
 958 static DEVICE_ATTR_RO(ctl_raae_count);
 959
 960 /**
 961  * ctl_iop0_count_show - controller iop0 count check
 962  * @cdev: pointer to embedded class device
 963  * @buf: the buffer returned
 964  *
 965  * A sysfs 'read-only' shost attribute.
 966  */
 967
 968 static ssize_t ctl_iop0_count_show(struct device *cdev,
 969                 struct device_attribute *attr, char *buf)
 970 {
 971         struct Scsi_Host *shost = class_to_shost(cdev);
 972         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 973         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 974         unsigned int iop0cnt;
 975
 976         iop0cnt = pm8001_mr32(pm8001_ha->general_stat_tbl_addr, 16);
 977         return sysfs_emit(buf, "0x%08x\n", iop0cnt);
 978 }
 979 static DEVICE_ATTR_RO(ctl_iop0_count);
 980
 981 /**
 982  * ctl_iop1_count_show - controller iop1 count check
 983  * @cdev: pointer to embedded class device
 984  * @buf: the buffer returned
 985  *
 986  * A sysfs 'read-only' shost attribute.
 987  */
 988
 989 static ssize_t ctl_iop1_count_show(struct device *cdev,
 990                 struct device_attribute *attr, char *buf)
 991 {
 992         struct Scsi_Host *shost = class_to_shost(cdev);
 993         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 994         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 995         unsigned int iop1cnt;
 996
 997         iop1cnt = pm8001_mr32(pm8001_ha->general_stat_tbl_addr, 20);
 998         return sysfs_emit(buf, "0x%08x\n", iop1cnt);
 999
1000 }
1001 static DEVICE_ATTR_RO(ctl_iop1_count);
1002
1003 struct device_attribute *pm8001_host_attrs[] = {
1004         &dev_attr_interface_rev,
1005         &dev_attr_controller_fatal_error,
1006         &dev_attr_fw_version,
1007         &dev_attr_update_fw,
1008         &dev_attr_aap_log,
1009         &dev_attr_iop_log,
1010         &dev_attr_fatal_log,
1011         &dev_attr_non_fatal_log,
1012         &dev_attr_non_fatal_count,
1013         &dev_attr_gsm_log,
1014         &dev_attr_max_out_io,
1015         &dev_attr_max_devices,
1016         &dev_attr_max_sg_list,
1017         &dev_attr_sas_spec_support,
1018         &dev_attr_logging_level,
1019         &dev_attr_event_log_size,
1020         &dev_attr_host_sas_address,
1021         &dev_attr_bios_version,
1022         &dev_attr_ib_log,
1023         &dev_attr_ob_log,
1024         &dev_attr_ila_version,
1025         &dev_attr_inc_fw_ver,
1026         &dev_attr_ctl_mpi_state,
1027         &dev_attr_ctl_hmi_error,
1028         &dev_attr_ctl_raae_count,
1029         &dev_attr_ctl_iop0_count,
1030         &dev_attr_ctl_iop1_count,
1031         NULL,
1032 };
1033