drivers/scsi/ses.c

   1 /*
   2  * SCSI Enclosure Services
   3  *
   4  * Copyright (C) 2008 James Bottomley <James.Bottomley@HansenPartnership.com>
   5  *
   6 **-----------------------------------------------------------------------------
   7 **
   8 **  This program is free software; you can redistribute it and/or
   9 **  modify it under the terms of the GNU General Public License
  10 **  version 2 as published by the Free Software Foundation.
  11 **
  12 **  This program is distributed in the hope that it will be useful,
  13 **  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 **  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 **  GNU General Public License for more details.
  16 **
  17 **  You should have received a copy of the GNU General Public License
  18 **  along with this program; if not, write to the Free Software
  19 **  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20 **
  21 **-----------------------------------------------------------------------------
  22 */
  23
  24 #include <linux/module.h>
  25 #include <linux/kernel.h>
  26 #include <linux/enclosure.h>
  27
  28 #include <scsi/scsi.h>
  29 #include <scsi/scsi_cmnd.h>
  30 #include <scsi/scsi_dbg.h>
  31 #include <scsi/scsi_device.h>
  32 #include <scsi/scsi_driver.h>
  33 #include <scsi/scsi_host.h>
  34
  35 struct ses_device {
  36         char *page1;
  37         char *page2;
  38         char *page10;
  39         short page1_len;
  40         short page2_len;
  41         short page10_len;
  42 };
  43
  44 struct ses_component {
  45         u64 addr;
  46         unsigned char *desc;
  47 };
  48
  49 static int ses_probe(struct device *dev)
  50 {
  51         struct scsi_device *sdev = to_scsi_device(dev);
  52         int err = -ENODEV;
  53
  54         if (sdev->type != TYPE_ENCLOSURE)
  55                 goto out;
  56
  57         err = 0;
  58         sdev_printk(KERN_NOTICE, sdev, "Attached Enclosure device\n");
  59
  60  out:
  61         return err;
  62 }
  63
  64 #define SES_TIMEOUT 30
  65 #define SES_RETRIES 3
  66
  67 static int ses_recv_diag(struct scsi_device *sdev, int page_code,
  68                          void *buf, int bufflen)
  69 {
  70         char cmd[] = {
  71                 RECEIVE_DIAGNOSTIC,
  72                 1,              /* Set PCV bit */
  73                 page_code,
  74                 bufflen >> 8,
  75                 bufflen & 0xff,
  76                 0
  77         };
  78
  79         return scsi_execute_req(sdev, cmd, DMA_FROM_DEVICE, buf, bufflen,
  80                                 NULL, SES_TIMEOUT, SES_RETRIES);
  81 }
  82
  83 static int ses_send_diag(struct scsi_device *sdev, int page_code,
  84                          void *buf, int bufflen)
  85 {
  86         u32 result;
  87
  88         char cmd[] = {
  89                 SEND_DIAGNOSTIC,
  90                 0x10,           /* Set PF bit */
  91                 0,
  92                 bufflen >> 8,
  93                 bufflen & 0xff,
  94                 0
  95         };
  96
  97         result = scsi_execute_req(sdev, cmd, DMA_TO_DEVICE, buf, bufflen,
  98                                   NULL, SES_TIMEOUT, SES_RETRIES);
  99         if (result)
 100                 sdev_printk(KERN_ERR, sdev, "SEND DIAGNOSTIC result: %8x\n",
 101                             result);
 102         return result;
 103 }
 104
 105 static int ses_set_page2_descriptor(struct enclosure_device *edev,
 106                                       struct enclosure_component *ecomp,
 107                                       char *desc)
 108 {
 109         int i, j, count = 0, descriptor = ecomp->number;
 110         struct scsi_device *sdev = to_scsi_device(edev->cdev.dev);
 111         struct ses_device *ses_dev = edev->scratch;
 112         char *type_ptr = ses_dev->page1 + 12 + ses_dev->page1[11];
 113         char *desc_ptr = ses_dev->page2 + 8;
 114
 115         /* Clear everything */
 116         memset(desc_ptr, 0, ses_dev->page2_len - 8);
 117         for (i = 0; i < ses_dev->page1[10]; i++, type_ptr += 4) {
 118                 for (j = 0; j < type_ptr[1]; j++) {
 119                         desc_ptr += 4;
 120                         if (type_ptr[0] != ENCLOSURE_COMPONENT_DEVICE &&
 121                             type_ptr[0] != ENCLOSURE_COMPONENT_ARRAY_DEVICE)
 122                                 continue;
 123                         if (count++ == descriptor) {
 124                                 memcpy(desc_ptr, desc, 4);
 125                                 /* set select */
 126                                 desc_ptr[0] |= 0x80;
 127                                 /* clear reserved, just in case */
 128                                 desc_ptr[0] &= 0xf0;
 129                         }
 130                 }
 131         }
 132
 133         return ses_send_diag(sdev, 2, ses_dev->page2, ses_dev->page2_len);
 134 }
 135
 136 static char *ses_get_page2_descriptor(struct enclosure_device *edev,
 137                                       struct enclosure_component *ecomp)
 138 {
 139         int i, j, count = 0, descriptor = ecomp->number;
 140         struct scsi_device *sdev = to_scsi_device(edev->cdev.dev);
 141         struct ses_device *ses_dev = edev->scratch;
 142         char *type_ptr = ses_dev->page1 + 12 + ses_dev->page1[11];
 143         char *desc_ptr = ses_dev->page2 + 8;
 144
 145         ses_recv_diag(sdev, 2, ses_dev->page2, ses_dev->page2_len);
 146
 147         for (i = 0; i < ses_dev->page1[10]; i++, type_ptr += 4) {
 148                 for (j = 0; j < type_ptr[1]; j++) {
 149                         desc_ptr += 4;
 150                         if (type_ptr[0] != ENCLOSURE_COMPONENT_DEVICE &&
 151                             type_ptr[0] != ENCLOSURE_COMPONENT_ARRAY_DEVICE)
 152                                 continue;
 153                         if (count++ == descriptor)
 154                                 return desc_ptr;
 155                 }
 156         }
 157         return NULL;
 158 }
 159
 160 static void ses_get_fault(struct enclosure_device *edev,
 161                           struct enclosure_component *ecomp)
 162 {
 163         char *desc;
 164
 165         desc = ses_get_page2_descriptor(edev, ecomp);
 166         ecomp->fault = (desc[3] & 0x60) >> 4;
 167 }
 168
 169 static int ses_set_fault(struct enclosure_device *edev,
 170                           struct enclosure_component *ecomp,
 171                          enum enclosure_component_setting val)
 172 {
 173         char desc[4] = {0 };
 174
 175         switch (val) {
 176         case ENCLOSURE_SETTING_DISABLED:
 177                 /* zero is disabled */
 178                 break;
 179         case ENCLOSURE_SETTING_ENABLED:
 180                 desc[2] = 0x02;
 181                 break;
 182         default:
 183                 /* SES doesn't do the SGPIO blink settings */
 184                 return -EINVAL;
 185         }
 186
 187         return ses_set_page2_descriptor(edev, ecomp, desc);
 188 }
 189
 190 static void ses_get_status(struct enclosure_device *edev,
 191                            struct enclosure_component *ecomp)
 192 {
 193         char *desc;
 194
 195         desc = ses_get_page2_descriptor(edev, ecomp);
 196         ecomp->status = (desc[0] & 0x0f);
 197 }
 198
 199 static void ses_get_locate(struct enclosure_device *edev,
 200                            struct enclosure_component *ecomp)
 201 {
 202         char *desc;
 203
 204         desc = ses_get_page2_descriptor(edev, ecomp);
 205         ecomp->locate = (desc[2] & 0x02) ? 1 : 0;
 206 }
 207
 208 static int ses_set_locate(struct enclosure_device *edev,
 209                           struct enclosure_component *ecomp,
 210                           enum enclosure_component_setting val)
 211 {
 212         char desc[4] = {0 };
 213
 214         switch (val) {
 215         case ENCLOSURE_SETTING_DISABLED:
 216                 /* zero is disabled */
 217                 break;
 218         case ENCLOSURE_SETTING_ENABLED:
 219                 desc[2] = 0x02;
 220                 break;
 221         default:
 222                 /* SES doesn't do the SGPIO blink settings */
 223                 return -EINVAL;
 224         }
 225         return ses_set_page2_descriptor(edev, ecomp, desc);
 226 }
 227
 228 static int ses_set_active(struct enclosure_device *edev,
 229                           struct enclosure_component *ecomp,
 230                           enum enclosure_component_setting val)
 231 {
 232         char desc[4] = {0 };
 233
 234         switch (val) {
 235         case ENCLOSURE_SETTING_DISABLED:
 236                 /* zero is disabled */
 237                 ecomp->active = 0;
 238                 break;
 239         case ENCLOSURE_SETTING_ENABLED:
 240                 desc[2] = 0x80;
 241                 ecomp->active = 1;
 242                 break;
 243         default:
 244                 /* SES doesn't do the SGPIO blink settings */
 245                 return -EINVAL;
 246         }
 247         return ses_set_page2_descriptor(edev, ecomp, desc);
 248 }
 249
 250 static struct enclosure_component_callbacks ses_enclosure_callbacks = {
 251         .get_fault              = ses_get_fault,
 252         .set_fault              = ses_set_fault,
 253         .get_status             = ses_get_status,
 254         .get_locate             = ses_get_locate,
 255         .set_locate             = ses_set_locate,
 256         .set_active             = ses_set_active,
 257 };
 258
 259 struct ses_host_edev {
 260         struct Scsi_Host *shost;
 261         struct enclosure_device *edev;
 262 };
 263
 264 int ses_match_host(struct enclosure_device *edev, void *data)
 265 {
 266         struct ses_host_edev *sed = data;
 267         struct scsi_device *sdev;
 268
 269         if (!scsi_is_sdev_device(edev->cdev.dev))
 270                 return 0;
 271
 272         sdev = to_scsi_device(edev->cdev.dev);
 273
 274         if (sdev->host != sed->shost)
 275                 return 0;
 276
 277         sed->edev = edev;
 278         return 1;
 279 }
 280
 281 static void ses_process_descriptor(struct enclosure_component *ecomp,
 282                                    unsigned char *desc)
 283 {
 284         int eip = desc[0] & 0x10;
 285         int invalid = desc[0] & 0x80;
 286         enum scsi_protocol proto = desc[0] & 0x0f;
 287         u64 addr = 0;
 288         struct ses_component *scomp = ecomp->scratch;
 289         unsigned char *d;
 290
 291         scomp->desc = desc;
 292
 293         if (invalid)
 294                 return;
 295
 296         switch (proto) {
 297         case SCSI_PROTOCOL_SAS:
 298                 if (eip)
 299                         d = desc + 8;
 300                 else
 301                         d = desc + 4;
 302                 /* only take the phy0 addr */
 303                 addr = (u64)d[12] << 56 |
 304                         (u64)d[13] << 48 |
 305                         (u64)d[14] << 40 |
 306                         (u64)d[15] << 32 |
 307                         (u64)d[16] << 24 |
 308                         (u64)d[17] << 16 |
 309                         (u64)d[18] << 8 |
 310                         (u64)d[19];
 311                 break;
 312         default:
 313                 /* FIXME: Need to add more protocols than just SAS */
 314                 break;
 315         }
 316         scomp->addr = addr;
 317 }
 318
 319 struct efd {
 320         u64 addr;
 321         struct device *dev;
 322 };
 323
 324 static int ses_enclosure_find_by_addr(struct enclosure_device *edev,
 325                                       void *data)
 326 {
 327         struct efd *efd = data;
 328         int i;
 329         struct ses_component *scomp;
 330
 331         if (!edev->component[0].scratch)
 332                 return 0;
 333
 334         for (i = 0; i < edev->components; i++) {
 335                 scomp = edev->component[i].scratch;
 336                 if (scomp->addr != efd->addr)
 337                         continue;
 338
 339                 enclosure_add_device(edev, i, efd->dev);
 340                 return 1;
 341         }
 342         return 0;
 343 }
 344
 345 #define VPD_INQUIRY_SIZE 512
 346
 347 static void ses_match_to_enclosure(struct enclosure_device *edev,
 348                                    struct scsi_device *sdev)
 349 {
 350         unsigned char *buf = kmalloc(VPD_INQUIRY_SIZE, GFP_KERNEL);
 351         unsigned char *desc;
 352         int len;
 353         struct efd efd = {
 354                 .addr = 0,
 355         };
 356         unsigned char cmd[] = {
 357                 INQUIRY,
 358                 1,
 359                 0x83,
 360                 VPD_INQUIRY_SIZE >> 8,
 361                 VPD_INQUIRY_SIZE & 0xff,
 362                 0
 363         };
 364
 365         if (!buf)
 366                 return;
 367
 368         if (scsi_execute_req(sdev, cmd, DMA_FROM_DEVICE, buf,
 369                              VPD_INQUIRY_SIZE, NULL, SES_TIMEOUT, SES_RETRIES))
 370                 goto free;
 371
 372         len = (buf[2] << 8) + buf[3];
 373         desc = buf + 4;
 374         while (desc < buf + len) {
 375                 enum scsi_protocol proto = desc[0] >> 4;
 376                 u8 code_set = desc[0] & 0x0f;
 377                 u8 piv = desc[1] & 0x80;
 378                 u8 assoc = (desc[1] & 0x30) >> 4;
 379                 u8 type = desc[1] & 0x0f;
 380                 u8 len = desc[3];
 381
 382                 if (piv && code_set == 1 && assoc == 1 && code_set == 1
 383                     && proto == SCSI_PROTOCOL_SAS && type == 3 && len == 8)
 384                         efd.addr = (u64)desc[4] << 56 |
 385                                 (u64)desc[5] << 48 |
 386                                 (u64)desc[6] << 40 |
 387                                 (u64)desc[7] << 32 |
 388                                 (u64)desc[8] << 24 |
 389                                 (u64)desc[9] << 16 |
 390                                 (u64)desc[10] << 8 |
 391                                 (u64)desc[11];
 392
 393                 desc += len + 4;
 394         }
 395         if (!efd.addr)
 396                 goto free;
 397
 398         efd.dev = &sdev->sdev_gendev;
 399
 400         enclosure_for_each_device(ses_enclosure_find_by_addr, &efd);
 401  free:
 402         kfree(buf);
 403 }
 404
 405 #define INIT_ALLOC_SIZE 32
 406
 407 static int ses_intf_add(struct class_device *cdev,
 408                         struct class_interface *intf)
 409 {
 410         struct scsi_device *sdev = to_scsi_device(cdev->dev);
 411         struct scsi_device *tmp_sdev;
 412         unsigned char *buf = NULL, *hdr_buf, *type_ptr, *desc_ptr,
 413                 *addl_desc_ptr;
 414         struct ses_device *ses_dev;
 415         u32 result;
 416         int i, j, types, len, components = 0;
 417         int err = -ENOMEM;
 418         struct enclosure_device *edev;
 419         struct ses_component *scomp;
 420
 421         if (!scsi_device_enclosure(sdev)) {
 422                 /* not an enclosure, but might be in one */
 423                 edev =  enclosure_find(&sdev->host->shost_gendev);
 424                 if (edev) {
 425                         ses_match_to_enclosure(edev, sdev);
 426                         class_device_put(&edev->cdev);
 427                 }
 428                 return -ENODEV;
 429         }
 430
 431         /* TYPE_ENCLOSURE prints a message in probe */
 432         if (sdev->type != TYPE_ENCLOSURE)
 433                 sdev_printk(KERN_NOTICE, sdev, "Embedded Enclosure Device\n");
 434
 435         ses_dev = kzalloc(sizeof(*ses_dev), GFP_KERNEL);
 436         hdr_buf = kzalloc(INIT_ALLOC_SIZE, GFP_KERNEL);
 437         if (!hdr_buf || !ses_dev)
 438                 goto err_init_free;
 439
 440         result = ses_recv_diag(sdev, 1, hdr_buf, INIT_ALLOC_SIZE);
 441         if (result)
 442                 goto recv_failed;
 443
 444         if (hdr_buf[1] != 0) {
 445                 /* FIXME: need subenclosure support; I've just never
 446                  * seen a device with subenclosures and it makes the
 447                  * traversal routines more complex */
 448                 sdev_printk(KERN_ERR, sdev,
 449                         "FIXME driver has no support for subenclosures (%d)\n",
 450                         buf[1]);
 451                 goto err_free;
 452         }
 453
 454         len = (hdr_buf[2] << 8) + hdr_buf[3] + 4;
 455         buf = kzalloc(len, GFP_KERNEL);
 456         if (!buf)
 457                 goto err_free;
 458
 459         ses_dev->page1 = buf;
 460         ses_dev->page1_len = len;
 461
 462         result = ses_recv_diag(sdev, 1, buf, len);
 463         if (result)
 464                 goto recv_failed;
 465
 466         types = buf[10];
 467         len = buf[11];
 468
 469         type_ptr = buf + 12 + len;
 470
 471         for (i = 0; i < types; i++, type_ptr += 4) {
 472                 if (type_ptr[0] == ENCLOSURE_COMPONENT_DEVICE ||
 473                     type_ptr[0] == ENCLOSURE_COMPONENT_ARRAY_DEVICE)
 474                         components += type_ptr[1];
 475         }
 476
 477         result = ses_recv_diag(sdev, 2, hdr_buf, INIT_ALLOC_SIZE);
 478         if (result)
 479                 goto recv_failed;
 480
 481         len = (hdr_buf[2] << 8) + hdr_buf[3] + 4;
 482         buf = kzalloc(len, GFP_KERNEL);
 483         if (!buf)
 484                 goto err_free;
 485
 486         /* make sure getting page 2 actually works */
 487         result = ses_recv_diag(sdev, 2, buf, len);
 488         if (result)
 489                 goto recv_failed;
 490         ses_dev->page2 = buf;
 491         ses_dev->page2_len = len;
 492
 493         /* The additional information page --- allows us
 494          * to match up the devices */
 495         result = ses_recv_diag(sdev, 10, hdr_buf, INIT_ALLOC_SIZE);
 496         if (result)
 497                 goto no_page10;
 498
 499         len = (hdr_buf[2] << 8) + hdr_buf[3] + 4;
 500         buf = kzalloc(len, GFP_KERNEL);
 501         if (!buf)
 502                 goto err_free;
 503
 504         result = ses_recv_diag(sdev, 10, buf, len);
 505         if (result)
 506                 goto recv_failed;
 507         ses_dev->page10 = buf;
 508         ses_dev->page10_len = len;
 509
 510  no_page10:
 511         scomp = kmalloc(sizeof(struct ses_component) * components, GFP_KERNEL);
 512         if (!scomp)
 513                 goto  err_free;
 514
 515         edev = enclosure_register(cdev->dev, sdev->sdev_gendev.bus_id,
 516                                   components, &ses_enclosure_callbacks);
 517         if (IS_ERR(edev)) {
 518                 err = PTR_ERR(edev);
 519                 goto err_free;
 520         }
 521
 522         edev->scratch = ses_dev;
 523         for (i = 0; i < components; i++)
 524                 edev->component[i].scratch = scomp++;
 525
 526         /* Page 7 for the descriptors is optional */
 527         buf = NULL;
 528         result = ses_recv_diag(sdev, 7, hdr_buf, INIT_ALLOC_SIZE);
 529         if (result)
 530                 goto simple_populate;
 531
 532         len = (hdr_buf[2] << 8) + hdr_buf[3] + 4;
 533         /* add 1 for trailing '\0' we'll use */
 534         buf = kzalloc(len + 1, GFP_KERNEL);
 535         result = ses_recv_diag(sdev, 7, buf, len);
 536         if (result) {
 537  simple_populate:
 538                 kfree(buf);
 539                 buf = NULL;
 540                 desc_ptr = NULL;
 541                 addl_desc_ptr = NULL;
 542         } else {
 543                 desc_ptr = buf + 8;
 544                 len = (desc_ptr[2] << 8) + desc_ptr[3];
 545                 /* skip past overall descriptor */
 546                 desc_ptr += len + 4;
 547                 addl_desc_ptr = ses_dev->page10 + 8;
 548         }
 549         type_ptr = ses_dev->page1 + 12 + ses_dev->page1[11];
 550         components = 0;
 551         for (i = 0; i < types; i++, type_ptr += 4) {
 552                 for (j = 0; j < type_ptr[1]; j++) {
 553                         char *name = NULL;
 554                         struct enclosure_component *ecomp;
 555
 556                         if (desc_ptr) {
 557                                 len = (desc_ptr[2] << 8) + desc_ptr[3];
 558                                 desc_ptr += 4;
 559                                 /* Add trailing zero - pushes into
 560                                  * reserved space */
 561                                 desc_ptr[len] = '\0';
 562                                 name = desc_ptr;
 563                         }
 564                         if (type_ptr[0] != ENCLOSURE_COMPONENT_DEVICE &&
 565                             type_ptr[0] != ENCLOSURE_COMPONENT_ARRAY_DEVICE)
 566                                 continue;
 567                         ecomp = enclosure_component_register(edev,
 568                                                              components++,
 569                                                              type_ptr[0],
 570                                                              name);
 571                         if (desc_ptr) {
 572                                 desc_ptr += len;
 573                                 if (!IS_ERR(ecomp))
 574                                         ses_process_descriptor(ecomp,
 575                                                                addl_desc_ptr);
 576
 577                                 if (addl_desc_ptr)
 578                                         addl_desc_ptr += addl_desc_ptr[1] + 2;
 579                         }
 580                 }
 581         }
 582         kfree(buf);
 583         kfree(hdr_buf);
 584
 585         /* see if there are any devices matching before
 586          * we found the enclosure */
 587         shost_for_each_device(tmp_sdev, sdev->host) {
 588                 if (tmp_sdev->lun != 0 || scsi_device_enclosure(tmp_sdev))
 589                         continue;
 590                 ses_match_to_enclosure(edev, tmp_sdev);
 591         }
 592
 593         return 0;
 594
 595  recv_failed:
 596         sdev_printk(KERN_ERR, sdev, "Failed to get diagnostic page 0x%x\n",
 597                     result);
 598         err = -ENODEV;
 599  err_free:
 600         kfree(buf);
 601         kfree(ses_dev->page10);
 602         kfree(ses_dev->page2);
 603         kfree(ses_dev->page1);
 604  err_init_free:
 605         kfree(ses_dev);
 606         kfree(hdr_buf);
 607         sdev_printk(KERN_ERR, sdev, "Failed to bind enclosure %d\n", err);
 608         return err;
 609 }
 610
 611 static int ses_remove(struct device *dev)
 612 {
 613         return 0;
 614 }
 615
 616 static void ses_intf_remove(struct class_device *cdev,
 617                             struct class_interface *intf)
 618 {
 619         struct scsi_device *sdev = to_scsi_device(cdev->dev);
 620         struct enclosure_device *edev;
 621         struct ses_device *ses_dev;
 622
 623         if (!scsi_device_enclosure(sdev))
 624                 return;
 625
 626         edev = enclosure_find(cdev->dev);
 627         if (!edev)
 628                 return;
 629
 630         ses_dev = edev->scratch;
 631         edev->scratch = NULL;
 632
 633         kfree(ses_dev->page1);
 634         kfree(ses_dev->page2);
 635         kfree(ses_dev);
 636
 637         kfree(edev->component[0].scratch);
 638
 639         class_device_put(&edev->cdev);
 640         enclosure_unregister(edev);
 641 }
 642
 643 static struct class_interface ses_interface = {
 644         .add    = ses_intf_add,
 645         .remove = ses_intf_remove,
 646 };
 647
 648 static struct scsi_driver ses_template = {
 649         .owner                  = THIS_MODULE,
 650         .gendrv = {
 651                 .name           = "ses",
 652                 .probe          = ses_probe,
 653                 .remove         = ses_remove,
 654         },
 655 };
 656
 657 static int __init ses_init(void)
 658 {
 659         int err;
 660
 661         err = scsi_register_interface(&ses_interface);
 662         if (err)
 663                 return err;
 664
 665         err = scsi_register_driver(&ses_template.gendrv);
 666         if (err)
 667                 goto out_unreg;
 668
 669         return 0;
 670
 671  out_unreg:
 672         scsi_unregister_interface(&ses_interface);
 673         return err;
 674 }
 675
 676 static void __exit ses_exit(void)
 677 {
 678         scsi_unregister_driver(&ses_template.gendrv);
 679         scsi_unregister_interface(&ses_interface);
 680 }
 681
 682 module_init(ses_init);
 683 module_exit(ses_exit);
 684
 685 MODULE_ALIAS_SCSI_DEVICE(TYPE_ENCLOSURE);
 686
 687 MODULE_AUTHOR("James Bottomley");
 688 MODULE_DESCRIPTION("SCSI Enclosure Services (ses) driver");
 689 MODULE_LICENSE("GPL v2");