drivers/scsi/qla2xxx/qla_attr.c

   1 /*
   2  *                  QLOGIC LINUX SOFTWARE
   3  *
   4  * QLogic ISP2x00 device driver for Linux 2.6.x
   5  * Copyright (C) 2003-2005 QLogic Corporation
   6  * (www.qlogic.com)
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License as published by the
  10  * Free Software Foundation; either version 2, or (at your option) any
  11  * later version.
  12  *
  13  * This program is distributed in the hope that it will be useful, but
  14  * WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * General Public License for more details.
  17  *
  18  */
  19 #include "qla_def.h"
  20
  21 #include <linux/vmalloc.h>
  22 #include <scsi/scsi_transport_fc.h>
  23
  24 /* SYSFS attributes --------------------------------------------------------- */
  25
  26 static ssize_t
  27 qla2x00_sysfs_read_fw_dump(struct kobject *kobj, char *buf, loff_t off,
  28     size_t count)
  29 {
  30         struct scsi_qla_host *ha = to_qla_host(dev_to_shost(container_of(kobj,
  31             struct device, kobj)));
  32
  33         if (ha->fw_dump_reading == 0)
  34                 return 0;
  35         if (off > ha->fw_dump_buffer_len)
  36                 return 0;
  37         if (off + count > ha->fw_dump_buffer_len)
  38                 count = ha->fw_dump_buffer_len - off;
  39
  40         memcpy(buf, &ha->fw_dump_buffer[off], count);
  41
  42         return (count);
  43 }
  44
  45 static ssize_t
  46 qla2x00_sysfs_write_fw_dump(struct kobject *kobj, char *buf, loff_t off,
  47     size_t count)
  48 {
  49         struct scsi_qla_host *ha = to_qla_host(dev_to_shost(container_of(kobj,
  50             struct device, kobj)));
  51         int reading;
  52         uint32_t dump_size;
  53
  54         if (off != 0)
  55                 return (0);
  56
  57         reading = simple_strtol(buf, NULL, 10);
  58         switch (reading) {
  59         case 0:
  60                 if (ha->fw_dump_reading == 1) {
  61                         qla_printk(KERN_INFO, ha,
  62                             "Firmware dump cleared on (%ld).\n",
  63                             ha->host_no);
  64
  65                         vfree(ha->fw_dump_buffer);
  66                         if (!IS_QLA24XX(ha) && !IS_QLA25XX(ha))
  67                                 free_pages((unsigned long)ha->fw_dump,
  68                                     ha->fw_dump_order);
  69
  70                         ha->fw_dump_reading = 0;
  71                         ha->fw_dump_buffer = NULL;
  72                         ha->fw_dump = NULL;
  73                         ha->fw_dumped = 0;
  74                 }
  75                 break;
  76         case 1:
  77                 if ((ha->fw_dump || ha->fw_dumped) && !ha->fw_dump_reading) {
  78                         ha->fw_dump_reading = 1;
  79
  80                         if (IS_QLA24XX(ha) || IS_QLA25XX(ha))
  81                                 dump_size = FW_DUMP_SIZE_24XX;
  82                         else {
  83                                 dump_size = FW_DUMP_SIZE_1M;
  84                                 if (ha->fw_memory_size < 0x20000)
  85                                         dump_size = FW_DUMP_SIZE_128K;
  86                                 else if (ha->fw_memory_size < 0x80000)
  87                                         dump_size = FW_DUMP_SIZE_512K;
  88                         }
  89                         ha->fw_dump_buffer = (char *)vmalloc(dump_size);
  90                         if (ha->fw_dump_buffer == NULL) {
  91                                 qla_printk(KERN_WARNING, ha,
  92                                     "Unable to allocate memory for firmware "
  93                                     "dump buffer (%d).\n", dump_size);
  94
  95                                 ha->fw_dump_reading = 0;
  96                                 return (count);
  97                         }
  98                         qla_printk(KERN_INFO, ha,
  99                             "Firmware dump ready for read on (%ld).\n",
 100                             ha->host_no);
 101                         memset(ha->fw_dump_buffer, 0, dump_size);
 102                         ha->isp_ops.ascii_fw_dump(ha);
 103                         ha->fw_dump_buffer_len = strlen(ha->fw_dump_buffer);
 104                 }
 105                 break;
 106         }
 107         return (count);
 108 }
 109
 110 static struct bin_attribute sysfs_fw_dump_attr = {
 111         .attr = {
 112                 .name = "fw_dump",
 113                 .mode = S_IRUSR | S_IWUSR,
 114                 .owner = THIS_MODULE,
 115         },
 116         .size = 0,
 117         .read = qla2x00_sysfs_read_fw_dump,
 118         .write = qla2x00_sysfs_write_fw_dump,
 119 };
 120
 121 static ssize_t
 122 qla2x00_sysfs_read_nvram(struct kobject *kobj, char *buf, loff_t off,
 123     size_t count)
 124 {
 125         struct scsi_qla_host *ha = to_qla_host(dev_to_shost(container_of(kobj,
 126             struct device, kobj)));
 127         unsigned long   flags;
 128
 129         if (!capable(CAP_SYS_ADMIN) || off != 0 || count != ha->nvram_size)
 130                 return 0;
 131
 132         /* Read NVRAM. */
 133         spin_lock_irqsave(&ha->hardware_lock, flags);
 134         ha->isp_ops.read_nvram(ha, (uint8_t *)buf, ha->nvram_base,
 135             ha->nvram_size);
 136         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 137
 138         return (count);
 139 }
 140
 141 static ssize_t
 142 qla2x00_sysfs_write_nvram(struct kobject *kobj, char *buf, loff_t off,
 143     size_t count)
 144 {
 145         struct scsi_qla_host *ha = to_qla_host(dev_to_shost(container_of(kobj,
 146             struct device, kobj)));
 147         unsigned long   flags;
 148         uint16_t        cnt;
 149
 150         if (!capable(CAP_SYS_ADMIN) || off != 0 || count != ha->nvram_size)
 151                 return 0;
 152
 153         /* Checksum NVRAM. */
 154         if (IS_QLA24XX(ha) || IS_QLA25XX(ha)) {
 155                 uint32_t *iter;
 156                 uint32_t chksum;
 157
 158                 iter = (uint32_t *)buf;
 159                 chksum = 0;
 160                 for (cnt = 0; cnt < ((count >> 2) - 1); cnt++)
 161                         chksum += le32_to_cpu(*iter++);
 162                 chksum = ~chksum + 1;
 163                 *iter = cpu_to_le32(chksum);
 164         } else {
 165                 uint8_t *iter;
 166                 uint8_t chksum;
 167
 168                 iter = (uint8_t *)buf;
 169                 chksum = 0;
 170                 for (cnt = 0; cnt < count - 1; cnt++)
 171                         chksum += *iter++;
 172                 chksum = ~chksum + 1;
 173                 *iter = chksum;
 174         }
 175
 176         /* Write NVRAM. */
 177         spin_lock_irqsave(&ha->hardware_lock, flags);
 178         ha->isp_ops.write_nvram(ha, (uint8_t *)buf, ha->nvram_base, count);
 179         spin_unlock_irqrestore(&ha->hardware_lock, flags);
 180
 181         return (count);
 182 }
 183
 184 static struct bin_attribute sysfs_nvram_attr = {
 185         .attr = {
 186                 .name = "nvram",
 187                 .mode = S_IRUSR | S_IWUSR,
 188                 .owner = THIS_MODULE,
 189         },
 190         .size = 0,
 191         .read = qla2x00_sysfs_read_nvram,
 192         .write = qla2x00_sysfs_write_nvram,
 193 };
 194
 195 void
 196 qla2x00_alloc_sysfs_attr(scsi_qla_host_t *ha)
 197 {
 198         struct Scsi_Host *host = ha->host;
 199
 200         sysfs_create_bin_file(&host->shost_gendev.kobj, &sysfs_fw_dump_attr);
 201         sysfs_nvram_attr.size = ha->nvram_size;
 202         sysfs_create_bin_file(&host->shost_gendev.kobj, &sysfs_nvram_attr);
 203 }
 204
 205 void
 206 qla2x00_free_sysfs_attr(scsi_qla_host_t *ha)
 207 {
 208         struct Scsi_Host *host = ha->host;
 209
 210         sysfs_remove_bin_file(&host->shost_gendev.kobj, &sysfs_fw_dump_attr);
 211         sysfs_remove_bin_file(&host->shost_gendev.kobj, &sysfs_nvram_attr);
 212 }
 213
 214 /* Scsi_Host attributes. */
 215
 216 static ssize_t
 217 qla2x00_drvr_version_show(struct class_device *cdev, char *buf)
 218 {
 219         return snprintf(buf, PAGE_SIZE, "%s\n", qla2x00_version_str);
 220 }
 221
 222 static ssize_t
 223 qla2x00_fw_version_show(struct class_device *cdev, char *buf)
 224 {
 225         scsi_qla_host_t *ha = to_qla_host(class_to_shost(cdev));
 226         char fw_str[30];
 227
 228         return snprintf(buf, PAGE_SIZE, "%s\n",
 229             ha->isp_ops.fw_version_str(ha, fw_str));
 230 }
 231
 232 static ssize_t
 233 qla2x00_serial_num_show(struct class_device *cdev, char *buf)
 234 {
 235         scsi_qla_host_t *ha = to_qla_host(class_to_shost(cdev));
 236         uint32_t sn;
 237
 238         sn = ((ha->serial0 & 0x1f) << 16) | (ha->serial2 << 8) | ha->serial1;
 239         return snprintf(buf, PAGE_SIZE, "%c%05d\n", 'A' + sn / 100000,
 240             sn % 100000);
 241 }
 242
 243 static ssize_t
 244 qla2x00_isp_name_show(struct class_device *cdev, char *buf)
 245 {
 246         scsi_qla_host_t *ha = to_qla_host(class_to_shost(cdev));
 247         return snprintf(buf, PAGE_SIZE, "%s\n", ha->brd_info->isp_name);
 248 }
 249
 250 static ssize_t
 251 qla2x00_isp_id_show(struct class_device *cdev, char *buf)
 252 {
 253         scsi_qla_host_t *ha = to_qla_host(class_to_shost(cdev));
 254         return snprintf(buf, PAGE_SIZE, "%04x %04x %04x %04x\n",
 255             ha->product_id[0], ha->product_id[1], ha->product_id[2],
 256             ha->product_id[3]);
 257 }
 258
 259 static ssize_t
 260 qla2x00_model_name_show(struct class_device *cdev, char *buf)
 261 {
 262         scsi_qla_host_t *ha = to_qla_host(class_to_shost(cdev));
 263         return snprintf(buf, PAGE_SIZE, "%s\n", ha->model_number);
 264 }
 265
 266 static ssize_t
 267 qla2x00_model_desc_show(struct class_device *cdev, char *buf)
 268 {
 269         scsi_qla_host_t *ha = to_qla_host(class_to_shost(cdev));
 270         return snprintf(buf, PAGE_SIZE, "%s\n",
 271             ha->model_desc ? ha->model_desc: "");
 272 }
 273
 274 static ssize_t
 275 qla2x00_pci_info_show(struct class_device *cdev, char *buf)
 276 {
 277         scsi_qla_host_t *ha = to_qla_host(class_to_shost(cdev));
 278         char pci_info[30];
 279
 280         return snprintf(buf, PAGE_SIZE, "%s\n",
 281             ha->isp_ops.pci_info_str(ha, pci_info));
 282 }
 283
 284 static ssize_t
 285 qla2x00_state_show(struct class_device *cdev, char *buf)
 286 {
 287         scsi_qla_host_t *ha = to_qla_host(class_to_shost(cdev));
 288         int len = 0;
 289
 290         if (atomic_read(&ha->loop_state) == LOOP_DOWN ||
 291             atomic_read(&ha->loop_state) == LOOP_DEAD)
 292                 len = snprintf(buf, PAGE_SIZE, "Link Down\n");
 293         else if (atomic_read(&ha->loop_state) != LOOP_READY ||
 294             test_bit(ABORT_ISP_ACTIVE, &ha->dpc_flags) ||
 295             test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags))
 296                 len = snprintf(buf, PAGE_SIZE, "Unknown Link State\n");
 297         else {
 298                 len = snprintf(buf, PAGE_SIZE, "Link Up - ");
 299
 300                 switch (ha->current_topology) {
 301                 case ISP_CFG_NL:
 302                         len += snprintf(buf + len, PAGE_SIZE-len, "Loop\n");
 303                         break;
 304                 case ISP_CFG_FL:
 305                         len += snprintf(buf + len, PAGE_SIZE-len, "FL_Port\n");
 306                         break;
 307                 case ISP_CFG_N:
 308                         len += snprintf(buf + len, PAGE_SIZE-len,
 309                             "N_Port to N_Port\n");
 310                         break;
 311                 case ISP_CFG_F:
 312                         len += snprintf(buf + len, PAGE_SIZE-len, "F_Port\n");
 313                         break;
 314                 default:
 315                         len += snprintf(buf + len, PAGE_SIZE-len, "Loop\n");
 316                         break;
 317                 }
 318         }
 319         return len;
 320 }
 321
 322 static CLASS_DEVICE_ATTR(driver_version, S_IRUGO, qla2x00_drvr_version_show,
 323         NULL);
 324 static CLASS_DEVICE_ATTR(fw_version, S_IRUGO, qla2x00_fw_version_show, NULL);
 325 static CLASS_DEVICE_ATTR(serial_num, S_IRUGO, qla2x00_serial_num_show, NULL);
 326 static CLASS_DEVICE_ATTR(isp_name, S_IRUGO, qla2x00_isp_name_show, NULL);
 327 static CLASS_DEVICE_ATTR(isp_id, S_IRUGO, qla2x00_isp_id_show, NULL);
 328 static CLASS_DEVICE_ATTR(model_name, S_IRUGO, qla2x00_model_name_show, NULL);
 329 static CLASS_DEVICE_ATTR(model_desc, S_IRUGO, qla2x00_model_desc_show, NULL);
 330 static CLASS_DEVICE_ATTR(pci_info, S_IRUGO, qla2x00_pci_info_show, NULL);
 331 static CLASS_DEVICE_ATTR(state, S_IRUGO, qla2x00_state_show, NULL);
 332
 333 struct class_device_attribute *qla2x00_host_attrs[] = {
 334         &class_device_attr_driver_version,
 335         &class_device_attr_fw_version,
 336         &class_device_attr_serial_num,
 337         &class_device_attr_isp_name,
 338         &class_device_attr_isp_id,
 339         &class_device_attr_model_name,
 340         &class_device_attr_model_desc,
 341         &class_device_attr_pci_info,
 342         &class_device_attr_state,
 343         NULL,
 344 };
 345
 346 /* Host attributes. */
 347
 348 static void
 349 qla2x00_get_host_port_id(struct Scsi_Host *shost)
 350 {
 351         scsi_qla_host_t *ha = to_qla_host(shost);
 352
 353         fc_host_port_id(shost) = ha->d_id.b.domain << 16 |
 354             ha->d_id.b.area << 8 | ha->d_id.b.al_pa;
 355 }
 356
 357 static void
 358 qla2x00_get_starget_node_name(struct scsi_target *starget)
 359 {
 360         struct Scsi_Host *host = dev_to_shost(starget->dev.parent);
 361         scsi_qla_host_t *ha = to_qla_host(host);
 362         fc_port_t *fcport;
 363         uint64_t node_name = 0;
 364
 365         list_for_each_entry(fcport, &ha->fcports, list) {
 366                 if (starget->id == fcport->os_target_id) {
 367                         node_name = *(uint64_t *)fcport->node_name;
 368                         break;
 369                 }
 370         }
 371
 372         fc_starget_node_name(starget) = be64_to_cpu(node_name);
 373 }
 374
 375 static void
 376 qla2x00_get_starget_port_name(struct scsi_target *starget)
 377 {
 378         struct Scsi_Host *host = dev_to_shost(starget->dev.parent);
 379         scsi_qla_host_t *ha = to_qla_host(host);
 380         fc_port_t *fcport;
 381         uint64_t port_name = 0;
 382
 383         list_for_each_entry(fcport, &ha->fcports, list) {
 384                 if (starget->id == fcport->os_target_id) {
 385                         port_name = *(uint64_t *)fcport->port_name;
 386                         break;
 387                 }
 388         }
 389
 390         fc_starget_port_name(starget) = be64_to_cpu(port_name);
 391 }
 392
 393 static void
 394 qla2x00_get_starget_port_id(struct scsi_target *starget)
 395 {
 396         struct Scsi_Host *host = dev_to_shost(starget->dev.parent);
 397         scsi_qla_host_t *ha = to_qla_host(host);
 398         fc_port_t *fcport;
 399         uint32_t port_id = ~0U;
 400
 401         list_for_each_entry(fcport, &ha->fcports, list) {
 402                 if (starget->id == fcport->os_target_id) {
 403                         port_id = fcport->d_id.b.domain << 16 |
 404                             fcport->d_id.b.area << 8 | fcport->d_id.b.al_pa;
 405                         break;
 406                 }
 407         }
 408
 409         fc_starget_port_id(starget) = port_id;
 410 }
 411
 412 static void
 413 qla2x00_get_rport_loss_tmo(struct fc_rport *rport)
 414 {
 415         struct Scsi_Host *host = rport_to_shost(rport);
 416         scsi_qla_host_t *ha = to_qla_host(host);
 417
 418         rport->dev_loss_tmo = ha->port_down_retry_count + 5;
 419 }
 420
 421 static void
 422 qla2x00_set_rport_loss_tmo(struct fc_rport *rport, uint32_t timeout)
 423 {
 424         struct Scsi_Host *host = rport_to_shost(rport);
 425         scsi_qla_host_t *ha = to_qla_host(host);
 426
 427         if (timeout)
 428                 ha->port_down_retry_count = timeout;
 429         else
 430                 ha->port_down_retry_count = 1;
 431
 432         rport->dev_loss_tmo = ha->port_down_retry_count + 5;
 433 }
 434
 435 struct fc_function_template qla2xxx_transport_functions = {
 436
 437         .show_host_node_name = 1,
 438         .show_host_port_name = 1,
 439         .show_host_supported_classes = 1,
 440
 441         .get_host_port_id = qla2x00_get_host_port_id,
 442         .show_host_port_id = 1,
 443
 444         .dd_fcrport_size = sizeof(struct fc_port *),
 445         .show_rport_supported_classes = 1,
 446
 447         .get_starget_node_name = qla2x00_get_starget_node_name,
 448         .show_starget_node_name = 1,
 449         .get_starget_port_name = qla2x00_get_starget_port_name,
 450         .show_starget_port_name = 1,
 451         .get_starget_port_id  = qla2x00_get_starget_port_id,
 452         .show_starget_port_id = 1,
 453
 454         .get_rport_dev_loss_tmo = qla2x00_get_rport_loss_tmo,
 455         .set_rport_dev_loss_tmo = qla2x00_set_rport_loss_tmo,
 456         .show_rport_dev_loss_tmo = 1,
 457
 458 };
 459
 460 void
 461 qla2x00_init_host_attr(scsi_qla_host_t *ha)
 462 {
 463         fc_host_node_name(ha->host) =
 464             be64_to_cpu(*(uint64_t *)ha->init_cb->node_name);
 465         fc_host_port_name(ha->host) =
 466             be64_to_cpu(*(uint64_t *)ha->init_cb->port_name);
 467         fc_host_supported_classes(ha->host) = FC_COS_CLASS3;
 468 }