1 /* 2 * linux/drivers/scsi/esas2r/esas2r_main.c 3 * For use with ATTO ExpressSAS R6xx SAS/SATA RAID controllers 4 * 5 * Copyright (c) 2001-2013 ATTO Technology, Inc. 6 * (mailto:linuxdrivers@attotech.com) 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 * as published by the Free Software Foundation; either version 2 11 * of the License, or (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * NO WARRANTY 19 * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR 20 * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT 21 * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, 22 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is 23 * solely responsible for determining the appropriateness of using and 24 * distributing the Program and assumes all risks associated with its 25 * exercise of rights under this Agreement, including but not limited to 26 * the risks and costs of program errors, damage to or loss of data, 27 * programs or equipment, and unavailability or interruption of operations. 28 * 29 * DISCLAIMER OF LIABILITY 30 * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY 31 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND 33 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR 34 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE 35 * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED 36 * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES 37 * 38 * You should have received a copy of the GNU General Public License 39 * along with this program; if not, write to the Free Software 40 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 41 * USA. 42 */ 43 44 #include "esas2r.h" 45 46 MODULE_DESCRIPTION(ESAS2R_DRVR_NAME ": " ESAS2R_LONGNAME " driver"); 47 MODULE_AUTHOR("ATTO Technology, Inc."); 48 MODULE_LICENSE("GPL"); 49 MODULE_VERSION(ESAS2R_VERSION_STR); 50 51 /* global definitions */ 52 53 static int found_adapters; 54 struct esas2r_adapter *esas2r_adapters[MAX_ADAPTERS]; 55 56 #define ESAS2R_VDA_EVENT_PORT1 54414 57 #define ESAS2R_VDA_EVENT_PORT2 54415 58 #define ESAS2R_VDA_EVENT_SOCK_COUNT 2 59 60 static struct esas2r_adapter *esas2r_adapter_from_kobj(struct kobject *kobj) 61 { 62 struct device *dev = container_of(kobj, struct device, kobj); 63 struct Scsi_Host *host = class_to_shost(dev); 64 65 return (struct esas2r_adapter *)host->hostdata; 66 } 67 68 static ssize_t read_fw(struct file *file, struct kobject *kobj, 69 struct bin_attribute *attr, 70 char *buf, loff_t off, size_t count) 71 { 72 struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); 73 74 return esas2r_read_fw(a, buf, off, count); 75 } 76 77 static ssize_t write_fw(struct file *file, struct kobject *kobj, 78 struct bin_attribute *attr, 79 char *buf, loff_t off, size_t count) 80 { 81 struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); 82 83 return esas2r_write_fw(a, buf, off, count); 84 } 85 86 static ssize_t read_fs(struct file *file, struct kobject *kobj, 87 struct bin_attribute *attr, 88 char *buf, loff_t off, size_t count) 89 { 90 struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); 91 92 return esas2r_read_fs(a, buf, off, count); 93 } 94 95 static ssize_t write_fs(struct file *file, struct kobject *kobj, 96 struct bin_attribute *attr, 97 char *buf, loff_t off, size_t count) 98 { 99 struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); 100 int length = min(sizeof(struct esas2r_ioctl_fs), count); 101 int result = 0; 102 103 result = esas2r_write_fs(a, buf, off, count); 104 105 if (result < 0) 106 result = 0; 107 108 return length; 109 } 110 111 static ssize_t read_vda(struct file *file, struct kobject *kobj, 112 struct bin_attribute *attr, 113 char *buf, loff_t off, size_t count) 114 { 115 struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); 116 117 return esas2r_read_vda(a, buf, off, count); 118 } 119 120 static ssize_t write_vda(struct file *file, struct kobject *kobj, 121 struct bin_attribute *attr, 122 char *buf, loff_t off, size_t count) 123 { 124 struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); 125 126 return esas2r_write_vda(a, buf, off, count); 127 } 128 129 static ssize_t read_live_nvram(struct file *file, struct kobject *kobj, 130 struct bin_attribute *attr, 131 char *buf, loff_t off, size_t count) 132 { 133 struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); 134 int length = min_t(size_t, sizeof(struct esas2r_sas_nvram), PAGE_SIZE); 135 136 memcpy(buf, a->nvram, length); 137 return length; 138 } 139 140 static ssize_t write_live_nvram(struct file *file, struct kobject *kobj, 141 struct bin_attribute *attr, 142 char *buf, loff_t off, size_t count) 143 { 144 struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); 145 struct esas2r_request *rq; 146 int result = -EFAULT; 147 148 rq = esas2r_alloc_request(a); 149 if (rq == NULL) 150 return -ENOMEM; 151 152 if (esas2r_write_params(a, rq, (struct esas2r_sas_nvram *)buf)) 153 result = count; 154 155 esas2r_free_request(a, rq); 156 157 return result; 158 } 159 160 static ssize_t read_default_nvram(struct file *file, struct kobject *kobj, 161 struct bin_attribute *attr, 162 char *buf, loff_t off, size_t count) 163 { 164 struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); 165 166 esas2r_nvram_get_defaults(a, (struct esas2r_sas_nvram *)buf); 167 168 return sizeof(struct esas2r_sas_nvram); 169 } 170 171 static ssize_t read_hw(struct file *file, struct kobject *kobj, 172 struct bin_attribute *attr, 173 char *buf, loff_t off, size_t count) 174 { 175 struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); 176 int length = min_t(size_t, sizeof(struct atto_ioctl), PAGE_SIZE); 177 178 if (!a->local_atto_ioctl) 179 return -ENOMEM; 180 181 if (handle_hba_ioctl(a, a->local_atto_ioctl) != IOCTL_SUCCESS) 182 return -ENOMEM; 183 184 memcpy(buf, a->local_atto_ioctl, length); 185 186 return length; 187 } 188 189 static ssize_t write_hw(struct file *file, struct kobject *kobj, 190 struct bin_attribute *attr, 191 char *buf, loff_t off, size_t count) 192 { 193 struct esas2r_adapter *a = esas2r_adapter_from_kobj(kobj); 194 int length = min(sizeof(struct atto_ioctl), count); 195 196 if (!a->local_atto_ioctl) { 197 a->local_atto_ioctl = kmalloc(sizeof(struct atto_ioctl), 198 GFP_KERNEL); 199 if (a->local_atto_ioctl == NULL) { 200 esas2r_log(ESAS2R_LOG_WARN, 201 "write_hw kzalloc failed for %zu bytes", 202 sizeof(struct atto_ioctl)); 203 return -ENOMEM; 204 } 205 } 206 207 memset(a->local_atto_ioctl, 0, sizeof(struct atto_ioctl)); 208 memcpy(a->local_atto_ioctl, buf, length); 209 210 return length; 211 } 212 213 #define ESAS2R_RW_BIN_ATTR(_name) \ 214 struct bin_attribute bin_attr_ ## _name = { \ 215 .attr = \ 216 { .name = __stringify(_name), .mode = S_IRUSR | S_IWUSR }, \ 217 .size = 0, \ 218 .read = read_ ## _name, \ 219 .write = write_ ## _name } 220 221 ESAS2R_RW_BIN_ATTR(fw); 222 ESAS2R_RW_BIN_ATTR(fs); 223 ESAS2R_RW_BIN_ATTR(vda); 224 ESAS2R_RW_BIN_ATTR(hw); 225 ESAS2R_RW_BIN_ATTR(live_nvram); 226 227 struct bin_attribute bin_attr_default_nvram = { 228 .attr = { .name = "default_nvram", .mode = S_IRUGO }, 229 .size = 0, 230 .read = read_default_nvram, 231 .write = NULL 232 }; 233 234 static struct scsi_host_template driver_template = { 235 .module = THIS_MODULE, 236 .show_info = esas2r_show_info, 237 .name = ESAS2R_LONGNAME, 238 .info = esas2r_info, 239 .ioctl = esas2r_ioctl, 240 .queuecommand = esas2r_queuecommand, 241 .eh_abort_handler = esas2r_eh_abort, 242 .eh_device_reset_handler = esas2r_device_reset, 243 .eh_bus_reset_handler = esas2r_bus_reset, 244 .eh_host_reset_handler = esas2r_host_reset, 245 .eh_target_reset_handler = esas2r_target_reset, 246 .can_queue = 128, 247 .this_id = -1, 248 .sg_tablesize = SG_CHUNK_SIZE, 249 .cmd_per_lun = 250 ESAS2R_DEFAULT_CMD_PER_LUN, 251 .present = 0, 252 .unchecked_isa_dma = 0, 253 .emulated = 0, 254 .proc_name = ESAS2R_DRVR_NAME, 255 .change_queue_depth = scsi_change_queue_depth, 256 .max_sectors = 0xFFFF, 257 }; 258 259 int sgl_page_size = 512; 260 module_param(sgl_page_size, int, 0); 261 MODULE_PARM_DESC(sgl_page_size, 262 "Scatter/gather list (SGL) page size in number of S/G " 263 "entries. If your application is doing a lot of very large " 264 "transfers, you may want to increase the SGL page size. " 265 "Default 512."); 266 267 int num_sg_lists = 1024; 268 module_param(num_sg_lists, int, 0); 269 MODULE_PARM_DESC(num_sg_lists, 270 "Number of scatter/gather lists. Default 1024."); 271 272 int sg_tablesize = SG_CHUNK_SIZE; 273 module_param(sg_tablesize, int, 0); 274 MODULE_PARM_DESC(sg_tablesize, 275 "Maximum number of entries in a scatter/gather table."); 276 277 int num_requests = 256; 278 module_param(num_requests, int, 0); 279 MODULE_PARM_DESC(num_requests, 280 "Number of requests. Default 256."); 281 282 int num_ae_requests = 4; 283 module_param(num_ae_requests, int, 0); 284 MODULE_PARM_DESC(num_ae_requests, 285 "Number of VDA asynchronous event requests. Default 4."); 286 287 int cmd_per_lun = ESAS2R_DEFAULT_CMD_PER_LUN; 288 module_param(cmd_per_lun, int, 0); 289 MODULE_PARM_DESC(cmd_per_lun, 290 "Maximum number of commands per LUN. Default " 291 DEFINED_NUM_TO_STR(ESAS2R_DEFAULT_CMD_PER_LUN) "."); 292 293 int can_queue = 128; 294 module_param(can_queue, int, 0); 295 MODULE_PARM_DESC(can_queue, 296 "Maximum number of commands per adapter. Default 128."); 297 298 int esas2r_max_sectors = 0xFFFF; 299 module_param(esas2r_max_sectors, int, 0); 300 MODULE_PARM_DESC(esas2r_max_sectors, 301 "Maximum number of disk sectors in a single data transfer. " 302 "Default 65535 (largest possible setting)."); 303 304 int interrupt_mode = 1; 305 module_param(interrupt_mode, int, 0); 306 MODULE_PARM_DESC(interrupt_mode, 307 "Defines the interrupt mode to use. 0 for legacy" 308 ", 1 for MSI. Default is MSI (1)."); 309 310 static const struct pci_device_id 311 esas2r_pci_table[] = { 312 { ATTO_VENDOR_ID, 0x0049, ATTO_VENDOR_ID, 0x0049, 313 0, 314 0, 0 }, 315 { ATTO_VENDOR_ID, 0x0049, ATTO_VENDOR_ID, 0x004A, 316 0, 317 0, 0 }, 318 { ATTO_VENDOR_ID, 0x0049, ATTO_VENDOR_ID, 0x004B, 319 0, 320 0, 0 }, 321 { ATTO_VENDOR_ID, 0x0049, ATTO_VENDOR_ID, 0x004C, 322 0, 323 0, 0 }, 324 { ATTO_VENDOR_ID, 0x0049, ATTO_VENDOR_ID, 0x004D, 325 0, 326 0, 0 }, 327 { ATTO_VENDOR_ID, 0x0049, ATTO_VENDOR_ID, 0x004E, 328 0, 329 0, 0 }, 330 { 0, 0, 0, 0, 331 0, 332 0, 0 } 333 }; 334 335 MODULE_DEVICE_TABLE(pci, esas2r_pci_table); 336 337 static int 338 esas2r_probe(struct pci_dev *pcid, const struct pci_device_id *id); 339 340 static void 341 esas2r_remove(struct pci_dev *pcid); 342 343 static struct pci_driver 344 esas2r_pci_driver = { 345 .name = ESAS2R_DRVR_NAME, 346 .id_table = esas2r_pci_table, 347 .probe = esas2r_probe, 348 .remove = esas2r_remove, 349 .suspend = esas2r_suspend, 350 .resume = esas2r_resume, 351 }; 352 353 static int esas2r_probe(struct pci_dev *pcid, 354 const struct pci_device_id *id) 355 { 356 struct Scsi_Host *host = NULL; 357 struct esas2r_adapter *a; 358 int err; 359 360 size_t host_alloc_size = sizeof(struct esas2r_adapter) 361 + ((num_requests) + 362 1) * sizeof(struct esas2r_request); 363 364 esas2r_log_dev(ESAS2R_LOG_DEBG, &(pcid->dev), 365 "esas2r_probe() 0x%02x 0x%02x 0x%02x 0x%02x", 366 pcid->vendor, 367 pcid->device, 368 pcid->subsystem_vendor, 369 pcid->subsystem_device); 370 371 esas2r_log_dev(ESAS2R_LOG_INFO, &(pcid->dev), 372 "before pci_enable_device() " 373 "enable_cnt: %d", 374 pcid->enable_cnt.counter); 375 376 err = pci_enable_device(pcid); 377 if (err != 0) { 378 esas2r_log_dev(ESAS2R_LOG_CRIT, &(pcid->dev), 379 "pci_enable_device() FAIL (%d)", 380 err); 381 return -ENODEV; 382 } 383 384 esas2r_log_dev(ESAS2R_LOG_INFO, &(pcid->dev), 385 "pci_enable_device() OK"); 386 esas2r_log_dev(ESAS2R_LOG_INFO, &(pcid->dev), 387 "after pci_enable_device() enable_cnt: %d", 388 pcid->enable_cnt.counter); 389 390 host = scsi_host_alloc(&driver_template, host_alloc_size); 391 if (host == NULL) { 392 esas2r_log(ESAS2R_LOG_CRIT, "scsi_host_alloc() FAIL"); 393 return -ENODEV; 394 } 395 396 memset(host->hostdata, 0, host_alloc_size); 397 398 a = (struct esas2r_adapter *)host->hostdata; 399 400 esas2r_log(ESAS2R_LOG_INFO, "scsi_host_alloc() OK host: %p", host); 401 402 /* override max LUN and max target id */ 403 404 host->max_id = ESAS2R_MAX_ID + 1; 405 host->max_lun = 255; 406 407 /* we can handle 16-byte CDbs */ 408 409 host->max_cmd_len = 16; 410 411 host->can_queue = can_queue; 412 host->cmd_per_lun = cmd_per_lun; 413 host->this_id = host->max_id + 1; 414 host->max_channel = 0; 415 host->unique_id = found_adapters; 416 host->sg_tablesize = sg_tablesize; 417 host->max_sectors = esas2r_max_sectors; 418 419 /* set to bus master for BIOses that don't do it for us */ 420 421 esas2r_log(ESAS2R_LOG_INFO, "pci_set_master() called"); 422 423 pci_set_master(pcid); 424 425 if (!esas2r_init_adapter(host, pcid, found_adapters)) { 426 esas2r_log(ESAS2R_LOG_CRIT, 427 "unable to initialize device at PCI bus %x:%x", 428 pcid->bus->number, 429 pcid->devfn); 430 431 esas2r_log_dev(ESAS2R_LOG_INFO, &(host->shost_gendev), 432 "scsi_host_put() called"); 433 434 scsi_host_put(host); 435 436 return 0; 437 438 } 439 440 esas2r_log(ESAS2R_LOG_INFO, "pci_set_drvdata(%p, %p) called", pcid, 441 host->hostdata); 442 443 pci_set_drvdata(pcid, host); 444 445 esas2r_log(ESAS2R_LOG_INFO, "scsi_add_host() called"); 446 447 err = scsi_add_host(host, &pcid->dev); 448 449 if (err) { 450 esas2r_log(ESAS2R_LOG_CRIT, "scsi_add_host returned %d", err); 451 esas2r_log_dev(ESAS2R_LOG_CRIT, &(host->shost_gendev), 452 "scsi_add_host() FAIL"); 453 454 esas2r_log_dev(ESAS2R_LOG_INFO, &(host->shost_gendev), 455 "scsi_host_put() called"); 456 457 scsi_host_put(host); 458 459 esas2r_log_dev(ESAS2R_LOG_INFO, &(host->shost_gendev), 460 "pci_set_drvdata(%p, NULL) called", 461 pcid); 462 463 pci_set_drvdata(pcid, NULL); 464 465 return -ENODEV; 466 } 467 468 469 esas2r_fw_event_on(a); 470 471 esas2r_log_dev(ESAS2R_LOG_INFO, &(host->shost_gendev), 472 "scsi_scan_host() called"); 473 474 scsi_scan_host(host); 475 476 /* Add sysfs binary files */ 477 if (sysfs_create_bin_file(&host->shost_dev.kobj, &bin_attr_fw)) 478 esas2r_log_dev(ESAS2R_LOG_WARN, &(host->shost_gendev), 479 "Failed to create sysfs binary file: fw"); 480 else 481 a->sysfs_fw_created = 1; 482 483 if (sysfs_create_bin_file(&host->shost_dev.kobj, &bin_attr_fs)) 484 esas2r_log_dev(ESAS2R_LOG_WARN, &(host->shost_gendev), 485 "Failed to create sysfs binary file: fs"); 486 else 487 a->sysfs_fs_created = 1; 488 489 if (sysfs_create_bin_file(&host->shost_dev.kobj, &bin_attr_vda)) 490 esas2r_log_dev(ESAS2R_LOG_WARN, &(host->shost_gendev), 491 "Failed to create sysfs binary file: vda"); 492 else 493 a->sysfs_vda_created = 1; 494 495 if (sysfs_create_bin_file(&host->shost_dev.kobj, &bin_attr_hw)) 496 esas2r_log_dev(ESAS2R_LOG_WARN, &(host->shost_gendev), 497 "Failed to create sysfs binary file: hw"); 498 else 499 a->sysfs_hw_created = 1; 500 501 if (sysfs_create_bin_file(&host->shost_dev.kobj, &bin_attr_live_nvram)) 502 esas2r_log_dev(ESAS2R_LOG_WARN, &(host->shost_gendev), 503 "Failed to create sysfs binary file: live_nvram"); 504 else 505 a->sysfs_live_nvram_created = 1; 506 507 if (sysfs_create_bin_file(&host->shost_dev.kobj, 508 &bin_attr_default_nvram)) 509 esas2r_log_dev(ESAS2R_LOG_WARN, &(host->shost_gendev), 510 "Failed to create sysfs binary file: default_nvram"); 511 else 512 a->sysfs_default_nvram_created = 1; 513 514 found_adapters++; 515 516 return 0; 517 } 518 519 static void esas2r_remove(struct pci_dev *pdev) 520 { 521 struct Scsi_Host *host = pci_get_drvdata(pdev); 522 struct esas2r_adapter *a = (struct esas2r_adapter *)host->hostdata; 523 524 esas2r_log_dev(ESAS2R_LOG_INFO, &(pdev->dev), 525 "esas2r_remove(%p) called; " 526 "host:%p", pdev, 527 host); 528 529 esas2r_kill_adapter(a->index); 530 found_adapters--; 531 } 532 533 static int __init esas2r_init(void) 534 { 535 int i; 536 537 esas2r_log(ESAS2R_LOG_INFO, "%s called", __func__); 538 539 /* verify valid parameters */ 540 541 if (can_queue < 1) { 542 esas2r_log(ESAS2R_LOG_WARN, 543 "warning: can_queue must be at least 1, value " 544 "forced."); 545 can_queue = 1; 546 } else if (can_queue > 2048) { 547 esas2r_log(ESAS2R_LOG_WARN, 548 "warning: can_queue must be no larger than 2048, " 549 "value forced."); 550 can_queue = 2048; 551 } 552 553 if (cmd_per_lun < 1) { 554 esas2r_log(ESAS2R_LOG_WARN, 555 "warning: cmd_per_lun must be at least 1, value " 556 "forced."); 557 cmd_per_lun = 1; 558 } else if (cmd_per_lun > 2048) { 559 esas2r_log(ESAS2R_LOG_WARN, 560 "warning: cmd_per_lun must be no larger than " 561 "2048, value forced."); 562 cmd_per_lun = 2048; 563 } 564 565 if (sg_tablesize < 32) { 566 esas2r_log(ESAS2R_LOG_WARN, 567 "warning: sg_tablesize must be at least 32, " 568 "value forced."); 569 sg_tablesize = 32; 570 } 571 572 if (esas2r_max_sectors < 1) { 573 esas2r_log(ESAS2R_LOG_WARN, 574 "warning: esas2r_max_sectors must be at least " 575 "1, value forced."); 576 esas2r_max_sectors = 1; 577 } else if (esas2r_max_sectors > 0xffff) { 578 esas2r_log(ESAS2R_LOG_WARN, 579 "warning: esas2r_max_sectors must be no larger " 580 "than 0xffff, value forced."); 581 esas2r_max_sectors = 0xffff; 582 } 583 584 sgl_page_size &= ~(ESAS2R_SGL_ALIGN - 1); 585 586 if (sgl_page_size < SGL_PG_SZ_MIN) 587 sgl_page_size = SGL_PG_SZ_MIN; 588 else if (sgl_page_size > SGL_PG_SZ_MAX) 589 sgl_page_size = SGL_PG_SZ_MAX; 590 591 if (num_sg_lists < NUM_SGL_MIN) 592 num_sg_lists = NUM_SGL_MIN; 593 else if (num_sg_lists > NUM_SGL_MAX) 594 num_sg_lists = NUM_SGL_MAX; 595 596 if (num_requests < NUM_REQ_MIN) 597 num_requests = NUM_REQ_MIN; 598 else if (num_requests > NUM_REQ_MAX) 599 num_requests = NUM_REQ_MAX; 600 601 if (num_ae_requests < NUM_AE_MIN) 602 num_ae_requests = NUM_AE_MIN; 603 else if (num_ae_requests > NUM_AE_MAX) 604 num_ae_requests = NUM_AE_MAX; 605 606 /* set up other globals */ 607 608 for (i = 0; i < MAX_ADAPTERS; i++) 609 esas2r_adapters[i] = NULL; 610 611 return pci_register_driver(&esas2r_pci_driver); 612 } 613 614 /* Handle ioctl calls to "/proc/scsi/esas2r/ATTOnode" */ 615 static const struct file_operations esas2r_proc_fops = { 616 .compat_ioctl = compat_ptr_ioctl, 617 .unlocked_ioctl = esas2r_proc_ioctl, 618 }; 619 620 static const struct proc_ops esas2r_proc_ops = { 621 .proc_ioctl = esas2r_proc_ioctl, 622 #ifdef CONFIG_COMPAT 623 .proc_compat_ioctl = compat_ptr_ioctl, 624 #endif 625 }; 626 627 static struct Scsi_Host *esas2r_proc_host; 628 static int esas2r_proc_major; 629 630 long esas2r_proc_ioctl(struct file *fp, unsigned int cmd, unsigned long arg) 631 { 632 return esas2r_ioctl_handler(esas2r_proc_host->hostdata, 633 cmd, (void __user *)arg); 634 } 635 636 static void __exit esas2r_exit(void) 637 { 638 esas2r_log(ESAS2R_LOG_INFO, "%s called", __func__); 639 640 if (esas2r_proc_major > 0) { 641 esas2r_log(ESAS2R_LOG_INFO, "unregister proc"); 642 643 remove_proc_entry(ATTONODE_NAME, 644 esas2r_proc_host->hostt->proc_dir); 645 unregister_chrdev(esas2r_proc_major, ESAS2R_DRVR_NAME); 646 647 esas2r_proc_major = 0; 648 } 649 650 esas2r_log(ESAS2R_LOG_INFO, "pci_unregister_driver() called"); 651 652 pci_unregister_driver(&esas2r_pci_driver); 653 } 654 655 int esas2r_show_info(struct seq_file *m, struct Scsi_Host *sh) 656 { 657 struct esas2r_adapter *a = (struct esas2r_adapter *)sh->hostdata; 658 659 struct esas2r_target *t; 660 int dev_count = 0; 661 662 esas2r_log(ESAS2R_LOG_DEBG, "esas2r_show_info (%p,%d)", m, sh->host_no); 663 664 seq_printf(m, ESAS2R_LONGNAME "\n" 665 "Driver version: "ESAS2R_VERSION_STR "\n" 666 "Flash version: %s\n" 667 "Firmware version: %s\n" 668 "Copyright "ESAS2R_COPYRIGHT_YEARS "\n" 669 "http://www.attotech.com\n" 670 "\n", 671 a->flash_rev, 672 a->fw_rev[0] ? a->fw_rev : "(none)"); 673 674 675 seq_printf(m, "Adapter information:\n" 676 "--------------------\n" 677 "Model: %s\n" 678 "SAS address: %02X%02X%02X%02X:%02X%02X%02X%02X\n", 679 esas2r_get_model_name(a), 680 a->nvram->sas_addr[0], 681 a->nvram->sas_addr[1], 682 a->nvram->sas_addr[2], 683 a->nvram->sas_addr[3], 684 a->nvram->sas_addr[4], 685 a->nvram->sas_addr[5], 686 a->nvram->sas_addr[6], 687 a->nvram->sas_addr[7]); 688 689 seq_puts(m, "\n" 690 "Discovered devices:\n" 691 "\n" 692 " # Target ID\n" 693 "---------------\n"); 694 695 for (t = a->targetdb; t < a->targetdb_end; t++) 696 if (t->buffered_target_state == TS_PRESENT) { 697 seq_printf(m, " %3d %3d\n", 698 ++dev_count, 699 (u16)(uintptr_t)(t - a->targetdb)); 700 } 701 702 if (dev_count == 0) 703 seq_puts(m, "none\n"); 704 705 seq_putc(m, '\n'); 706 return 0; 707 708 } 709 710 const char *esas2r_info(struct Scsi_Host *sh) 711 { 712 struct esas2r_adapter *a = (struct esas2r_adapter *)sh->hostdata; 713 static char esas2r_info_str[512]; 714 715 esas2r_log_dev(ESAS2R_LOG_INFO, &(sh->shost_gendev), 716 "esas2r_info() called"); 717 718 /* 719 * if we haven't done so already, register as a char driver 720 * and stick a node under "/proc/scsi/esas2r/ATTOnode" 721 */ 722 723 if (esas2r_proc_major <= 0) { 724 esas2r_proc_host = sh; 725 726 esas2r_proc_major = register_chrdev(0, ESAS2R_DRVR_NAME, 727 &esas2r_proc_fops); 728 729 esas2r_log_dev(ESAS2R_LOG_DEBG, &(sh->shost_gendev), 730 "register_chrdev (major %d)", 731 esas2r_proc_major); 732 733 if (esas2r_proc_major > 0) { 734 struct proc_dir_entry *pde; 735 736 pde = proc_create(ATTONODE_NAME, 0, 737 sh->hostt->proc_dir, 738 &esas2r_proc_ops); 739 740 if (!pde) { 741 esas2r_log_dev(ESAS2R_LOG_WARN, 742 &(sh->shost_gendev), 743 "failed to create_proc_entry"); 744 esas2r_proc_major = -1; 745 } 746 } 747 } 748 749 sprintf(esas2r_info_str, 750 ESAS2R_LONGNAME " (bus 0x%02X, device 0x%02X, IRQ 0x%02X)" 751 " driver version: "ESAS2R_VERSION_STR " firmware version: " 752 "%s\n", 753 a->pcid->bus->number, a->pcid->devfn, a->pcid->irq, 754 a->fw_rev[0] ? a->fw_rev : "(none)"); 755 756 return esas2r_info_str; 757 } 758 759 /* Callback for building a request scatter/gather list */ 760 static u32 get_physaddr_from_sgc(struct esas2r_sg_context *sgc, u64 *addr) 761 { 762 u32 len; 763 764 if (likely(sgc->cur_offset == sgc->exp_offset)) { 765 /* 766 * the normal case: caller used all bytes from previous call, so 767 * expected offset is the same as the current offset. 768 */ 769 770 if (sgc->sgel_count < sgc->num_sgel) { 771 /* retrieve next segment, except for first time */ 772 if (sgc->exp_offset > (u8 *)0) { 773 /* advance current segment */ 774 sgc->cur_sgel = sg_next(sgc->cur_sgel); 775 ++(sgc->sgel_count); 776 } 777 778 779 len = sg_dma_len(sgc->cur_sgel); 780 (*addr) = sg_dma_address(sgc->cur_sgel); 781 782 /* save the total # bytes returned to caller so far */ 783 sgc->exp_offset += len; 784 785 } else { 786 len = 0; 787 } 788 } else if (sgc->cur_offset < sgc->exp_offset) { 789 /* 790 * caller did not use all bytes from previous call. need to 791 * compute the address based on current segment. 792 */ 793 794 len = sg_dma_len(sgc->cur_sgel); 795 (*addr) = sg_dma_address(sgc->cur_sgel); 796 797 sgc->exp_offset -= len; 798 799 /* calculate PA based on prev segment address and offsets */ 800 *addr = *addr + 801 (sgc->cur_offset - sgc->exp_offset); 802 803 sgc->exp_offset += len; 804 805 /* re-calculate length based on offset */ 806 len = lower_32_bits( 807 sgc->exp_offset - sgc->cur_offset); 808 } else { /* if ( sgc->cur_offset > sgc->exp_offset ) */ 809 /* 810 * we don't expect the caller to skip ahead. 811 * cur_offset will never exceed the len we return 812 */ 813 len = 0; 814 } 815 816 return len; 817 } 818 819 int esas2r_queuecommand(struct Scsi_Host *host, struct scsi_cmnd *cmd) 820 { 821 struct esas2r_adapter *a = 822 (struct esas2r_adapter *)cmd->device->host->hostdata; 823 struct esas2r_request *rq; 824 struct esas2r_sg_context sgc; 825 unsigned bufflen; 826 827 /* Assume success, if it fails we will fix the result later. */ 828 cmd->result = DID_OK << 16; 829 830 if (unlikely(test_bit(AF_DEGRADED_MODE, &a->flags))) { 831 cmd->result = DID_NO_CONNECT << 16; 832 cmd->scsi_done(cmd); 833 return 0; 834 } 835 836 rq = esas2r_alloc_request(a); 837 if (unlikely(rq == NULL)) { 838 esas2r_debug("esas2r_alloc_request failed"); 839 return SCSI_MLQUEUE_HOST_BUSY; 840 } 841 842 rq->cmd = cmd; 843 bufflen = scsi_bufflen(cmd); 844 845 if (likely(bufflen != 0)) { 846 if (cmd->sc_data_direction == DMA_TO_DEVICE) 847 rq->vrq->scsi.flags |= cpu_to_le32(FCP_CMND_WRD); 848 else if (cmd->sc_data_direction == DMA_FROM_DEVICE) 849 rq->vrq->scsi.flags |= cpu_to_le32(FCP_CMND_RDD); 850 } 851 852 memcpy(rq->vrq->scsi.cdb, cmd->cmnd, cmd->cmd_len); 853 rq->vrq->scsi.length = cpu_to_le32(bufflen); 854 rq->target_id = cmd->device->id; 855 rq->vrq->scsi.flags |= cpu_to_le32(cmd->device->lun); 856 rq->sense_buf = cmd->sense_buffer; 857 rq->sense_len = SCSI_SENSE_BUFFERSIZE; 858 859 esas2r_sgc_init(&sgc, a, rq, NULL); 860 861 sgc.length = bufflen; 862 sgc.cur_offset = NULL; 863 864 sgc.cur_sgel = scsi_sglist(cmd); 865 sgc.exp_offset = NULL; 866 sgc.num_sgel = scsi_dma_map(cmd); 867 sgc.sgel_count = 0; 868 869 if (unlikely(sgc.num_sgel < 0)) { 870 esas2r_free_request(a, rq); 871 return SCSI_MLQUEUE_HOST_BUSY; 872 } 873 874 sgc.get_phys_addr = (PGETPHYSADDR)get_physaddr_from_sgc; 875 876 if (unlikely(!esas2r_build_sg_list(a, rq, &sgc))) { 877 scsi_dma_unmap(cmd); 878 esas2r_free_request(a, rq); 879 return SCSI_MLQUEUE_HOST_BUSY; 880 } 881 882 esas2r_debug("start request %p to %d:%d\n", rq, (int)cmd->device->id, 883 (int)cmd->device->lun); 884 885 esas2r_start_request(a, rq); 886 887 return 0; 888 } 889 890 static void complete_task_management_request(struct esas2r_adapter *a, 891 struct esas2r_request *rq) 892 { 893 (*rq->task_management_status_ptr) = rq->req_stat; 894 esas2r_free_request(a, rq); 895 } 896 897 /** 898 * Searches the specified queue for the specified queue for the command 899 * to abort. 900 * 901 * @param [in] a 902 * @param [in] abort_request 903 * @param [in] cmd 904 * t 905 * @return 0 on failure, 1 if command was not found, 2 if command was found 906 */ 907 static int esas2r_check_active_queue(struct esas2r_adapter *a, 908 struct esas2r_request **abort_request, 909 struct scsi_cmnd *cmd, 910 struct list_head *queue) 911 { 912 bool found = false; 913 struct esas2r_request *ar = *abort_request; 914 struct esas2r_request *rq; 915 struct list_head *element, *next; 916 917 list_for_each_safe(element, next, queue) { 918 919 rq = list_entry(element, struct esas2r_request, req_list); 920 921 if (rq->cmd == cmd) { 922 923 /* Found the request. See what to do with it. */ 924 if (queue == &a->active_list) { 925 /* 926 * We are searching the active queue, which 927 * means that we need to send an abort request 928 * to the firmware. 929 */ 930 ar = esas2r_alloc_request(a); 931 if (ar == NULL) { 932 esas2r_log_dev(ESAS2R_LOG_WARN, 933 &(a->host->shost_gendev), 934 "unable to allocate an abort request for cmd %p", 935 cmd); 936 return 0; /* Failure */ 937 } 938 939 /* 940 * Task management request must be formatted 941 * with a lock held. 942 */ 943 ar->sense_len = 0; 944 ar->vrq->scsi.length = 0; 945 ar->target_id = rq->target_id; 946 ar->vrq->scsi.flags |= cpu_to_le32( 947 (u8)le32_to_cpu(rq->vrq->scsi.flags)); 948 949 memset(ar->vrq->scsi.cdb, 0, 950 sizeof(ar->vrq->scsi.cdb)); 951 952 ar->vrq->scsi.flags |= cpu_to_le32( 953 FCP_CMND_TRM); 954 ar->vrq->scsi.u.abort_handle = 955 rq->vrq->scsi.handle; 956 } else { 957 /* 958 * The request is pending but not active on 959 * the firmware. Just free it now and we'll 960 * report the successful abort below. 961 */ 962 list_del_init(&rq->req_list); 963 esas2r_free_request(a, rq); 964 } 965 966 found = true; 967 break; 968 } 969 970 } 971 972 if (!found) 973 return 1; /* Not found */ 974 975 return 2; /* found */ 976 977 978 } 979 980 int esas2r_eh_abort(struct scsi_cmnd *cmd) 981 { 982 struct esas2r_adapter *a = 983 (struct esas2r_adapter *)cmd->device->host->hostdata; 984 struct esas2r_request *abort_request = NULL; 985 unsigned long flags; 986 struct list_head *queue; 987 int result; 988 989 esas2r_log(ESAS2R_LOG_INFO, "eh_abort (%p)", cmd); 990 991 if (test_bit(AF_DEGRADED_MODE, &a->flags)) { 992 cmd->result = DID_ABORT << 16; 993 994 scsi_set_resid(cmd, 0); 995 996 cmd->scsi_done(cmd); 997 998 return SUCCESS; 999 } 1000 1001 spin_lock_irqsave(&a->queue_lock, flags); 1002 1003 /* 1004 * Run through the defer and active queues looking for the request 1005 * to abort. 1006 */ 1007 1008 queue = &a->defer_list; 1009 1010 check_active_queue: 1011 1012 result = esas2r_check_active_queue(a, &abort_request, cmd, queue); 1013 1014 if (!result) { 1015 spin_unlock_irqrestore(&a->queue_lock, flags); 1016 return FAILED; 1017 } else if (result == 2 && (queue == &a->defer_list)) { 1018 queue = &a->active_list; 1019 goto check_active_queue; 1020 } 1021 1022 spin_unlock_irqrestore(&a->queue_lock, flags); 1023 1024 if (abort_request) { 1025 u8 task_management_status = RS_PENDING; 1026 1027 /* 1028 * the request is already active, so we need to tell 1029 * the firmware to abort it and wait for the response. 1030 */ 1031 1032 abort_request->comp_cb = complete_task_management_request; 1033 abort_request->task_management_status_ptr = 1034 &task_management_status; 1035 1036 esas2r_start_request(a, abort_request); 1037 1038 if (atomic_read(&a->disable_cnt) == 0) 1039 esas2r_do_deferred_processes(a); 1040 1041 while (task_management_status == RS_PENDING) 1042 msleep(10); 1043 1044 /* 1045 * Once we get here, the original request will have been 1046 * completed by the firmware and the abort request will have 1047 * been cleaned up. we're done! 1048 */ 1049 1050 return SUCCESS; 1051 } 1052 1053 /* 1054 * If we get here, either we found the inactive request and 1055 * freed it, or we didn't find it at all. Either way, success! 1056 */ 1057 1058 cmd->result = DID_ABORT << 16; 1059 1060 scsi_set_resid(cmd, 0); 1061 1062 cmd->scsi_done(cmd); 1063 1064 return SUCCESS; 1065 } 1066 1067 static int esas2r_host_bus_reset(struct scsi_cmnd *cmd, bool host_reset) 1068 { 1069 struct esas2r_adapter *a = 1070 (struct esas2r_adapter *)cmd->device->host->hostdata; 1071 1072 if (test_bit(AF_DEGRADED_MODE, &a->flags)) 1073 return FAILED; 1074 1075 if (host_reset) 1076 esas2r_reset_adapter(a); 1077 else 1078 esas2r_reset_bus(a); 1079 1080 /* above call sets the AF_OS_RESET flag. wait for it to clear. */ 1081 1082 while (test_bit(AF_OS_RESET, &a->flags)) { 1083 msleep(10); 1084 1085 if (test_bit(AF_DEGRADED_MODE, &a->flags)) 1086 return FAILED; 1087 } 1088 1089 if (test_bit(AF_DEGRADED_MODE, &a->flags)) 1090 return FAILED; 1091 1092 return SUCCESS; 1093 } 1094 1095 int esas2r_host_reset(struct scsi_cmnd *cmd) 1096 { 1097 esas2r_log(ESAS2R_LOG_INFO, "host_reset (%p)", cmd); 1098 1099 return esas2r_host_bus_reset(cmd, true); 1100 } 1101 1102 int esas2r_bus_reset(struct scsi_cmnd *cmd) 1103 { 1104 esas2r_log(ESAS2R_LOG_INFO, "bus_reset (%p)", cmd); 1105 1106 return esas2r_host_bus_reset(cmd, false); 1107 } 1108 1109 static int esas2r_dev_targ_reset(struct scsi_cmnd *cmd, bool target_reset) 1110 { 1111 struct esas2r_adapter *a = 1112 (struct esas2r_adapter *)cmd->device->host->hostdata; 1113 struct esas2r_request *rq; 1114 u8 task_management_status = RS_PENDING; 1115 bool completed; 1116 1117 if (test_bit(AF_DEGRADED_MODE, &a->flags)) 1118 return FAILED; 1119 1120 retry: 1121 rq = esas2r_alloc_request(a); 1122 if (rq == NULL) { 1123 if (target_reset) { 1124 esas2r_log(ESAS2R_LOG_CRIT, 1125 "unable to allocate a request for a " 1126 "target reset (%d)!", 1127 cmd->device->id); 1128 } else { 1129 esas2r_log(ESAS2R_LOG_CRIT, 1130 "unable to allocate a request for a " 1131 "device reset (%d:%llu)!", 1132 cmd->device->id, 1133 cmd->device->lun); 1134 } 1135 1136 1137 return FAILED; 1138 } 1139 1140 rq->target_id = cmd->device->id; 1141 rq->vrq->scsi.flags |= cpu_to_le32(cmd->device->lun); 1142 rq->req_stat = RS_PENDING; 1143 1144 rq->comp_cb = complete_task_management_request; 1145 rq->task_management_status_ptr = &task_management_status; 1146 1147 if (target_reset) { 1148 esas2r_debug("issuing target reset (%p) to id %d", rq, 1149 cmd->device->id); 1150 completed = esas2r_send_task_mgmt(a, rq, 0x20); 1151 } else { 1152 esas2r_debug("issuing device reset (%p) to id %d lun %d", rq, 1153 cmd->device->id, cmd->device->lun); 1154 completed = esas2r_send_task_mgmt(a, rq, 0x10); 1155 } 1156 1157 if (completed) { 1158 /* Task management cmd completed right away, need to free it. */ 1159 1160 esas2r_free_request(a, rq); 1161 } else { 1162 /* 1163 * Wait for firmware to complete the request. Completion 1164 * callback will free it. 1165 */ 1166 while (task_management_status == RS_PENDING) 1167 msleep(10); 1168 } 1169 1170 if (test_bit(AF_DEGRADED_MODE, &a->flags)) 1171 return FAILED; 1172 1173 if (task_management_status == RS_BUSY) { 1174 /* 1175 * Busy, probably because we are flashing. Wait a bit and 1176 * try again. 1177 */ 1178 msleep(100); 1179 goto retry; 1180 } 1181 1182 return SUCCESS; 1183 } 1184 1185 int esas2r_device_reset(struct scsi_cmnd *cmd) 1186 { 1187 esas2r_log(ESAS2R_LOG_INFO, "device_reset (%p)", cmd); 1188 1189 return esas2r_dev_targ_reset(cmd, false); 1190 1191 } 1192 1193 int esas2r_target_reset(struct scsi_cmnd *cmd) 1194 { 1195 esas2r_log(ESAS2R_LOG_INFO, "target_reset (%p)", cmd); 1196 1197 return esas2r_dev_targ_reset(cmd, true); 1198 } 1199 1200 void esas2r_log_request_failure(struct esas2r_adapter *a, 1201 struct esas2r_request *rq) 1202 { 1203 u8 reqstatus = rq->req_stat; 1204 1205 if (reqstatus == RS_SUCCESS) 1206 return; 1207 1208 if (rq->vrq->scsi.function == VDA_FUNC_SCSI) { 1209 if (reqstatus == RS_SCSI_ERROR) { 1210 if (rq->func_rsp.scsi_rsp.sense_len >= 13) { 1211 esas2r_log(ESAS2R_LOG_WARN, 1212 "request failure - SCSI error %x ASC:%x ASCQ:%x CDB:%x", 1213 rq->sense_buf[2], rq->sense_buf[12], 1214 rq->sense_buf[13], 1215 rq->vrq->scsi.cdb[0]); 1216 } else { 1217 esas2r_log(ESAS2R_LOG_WARN, 1218 "request failure - SCSI error CDB:%x\n", 1219 rq->vrq->scsi.cdb[0]); 1220 } 1221 } else if ((rq->vrq->scsi.cdb[0] != INQUIRY 1222 && rq->vrq->scsi.cdb[0] != REPORT_LUNS) 1223 || (reqstatus != RS_SEL 1224 && reqstatus != RS_SEL2)) { 1225 if ((reqstatus == RS_UNDERRUN) && 1226 (rq->vrq->scsi.cdb[0] == INQUIRY)) { 1227 /* Don't log inquiry underruns */ 1228 } else { 1229 esas2r_log(ESAS2R_LOG_WARN, 1230 "request failure - cdb:%x reqstatus:%d target:%d", 1231 rq->vrq->scsi.cdb[0], reqstatus, 1232 rq->target_id); 1233 } 1234 } 1235 } 1236 } 1237 1238 void esas2r_wait_request(struct esas2r_adapter *a, struct esas2r_request *rq) 1239 { 1240 u32 starttime; 1241 u32 timeout; 1242 1243 starttime = jiffies_to_msecs(jiffies); 1244 timeout = rq->timeout ? rq->timeout : 5000; 1245 1246 while (true) { 1247 esas2r_polled_interrupt(a); 1248 1249 if (rq->req_stat != RS_STARTED) 1250 break; 1251 1252 schedule_timeout_interruptible(msecs_to_jiffies(100)); 1253 1254 if ((jiffies_to_msecs(jiffies) - starttime) > timeout) { 1255 esas2r_hdebug("request TMO"); 1256 esas2r_bugon(); 1257 1258 rq->req_stat = RS_TIMEOUT; 1259 1260 esas2r_local_reset_adapter(a); 1261 return; 1262 } 1263 } 1264 } 1265 1266 u32 esas2r_map_data_window(struct esas2r_adapter *a, u32 addr_lo) 1267 { 1268 u32 offset = addr_lo & (MW_DATA_WINDOW_SIZE - 1); 1269 u32 base = addr_lo & -(signed int)MW_DATA_WINDOW_SIZE; 1270 1271 if (a->window_base != base) { 1272 esas2r_write_register_dword(a, MVR_PCI_WIN1_REMAP, 1273 base | MVRPW1R_ENABLE); 1274 esas2r_flush_register_dword(a, MVR_PCI_WIN1_REMAP); 1275 a->window_base = base; 1276 } 1277 1278 return offset; 1279 } 1280 1281 /* Read a block of data from chip memory */ 1282 bool esas2r_read_mem_block(struct esas2r_adapter *a, 1283 void *to, 1284 u32 from, 1285 u32 size) 1286 { 1287 u8 *end = (u8 *)to; 1288 1289 while (size) { 1290 u32 len; 1291 u32 offset; 1292 u32 iatvr; 1293 1294 iatvr = (from & -(signed int)MW_DATA_WINDOW_SIZE); 1295 1296 esas2r_map_data_window(a, iatvr); 1297 1298 offset = from & (MW_DATA_WINDOW_SIZE - 1); 1299 len = size; 1300 1301 if (len > MW_DATA_WINDOW_SIZE - offset) 1302 len = MW_DATA_WINDOW_SIZE - offset; 1303 1304 from += len; 1305 size -= len; 1306 1307 while (len--) { 1308 *end++ = esas2r_read_data_byte(a, offset); 1309 offset++; 1310 } 1311 } 1312 1313 return true; 1314 } 1315 1316 void esas2r_nuxi_mgt_data(u8 function, void *data) 1317 { 1318 struct atto_vda_grp_info *g; 1319 struct atto_vda_devinfo *d; 1320 struct atto_vdapart_info *p; 1321 struct atto_vda_dh_info *h; 1322 struct atto_vda_metrics_info *m; 1323 struct atto_vda_schedule_info *s; 1324 struct atto_vda_buzzer_info *b; 1325 u8 i; 1326 1327 switch (function) { 1328 case VDAMGT_BUZZER_INFO: 1329 case VDAMGT_BUZZER_SET: 1330 1331 b = (struct atto_vda_buzzer_info *)data; 1332 1333 b->duration = le32_to_cpu(b->duration); 1334 break; 1335 1336 case VDAMGT_SCHEDULE_INFO: 1337 case VDAMGT_SCHEDULE_EVENT: 1338 1339 s = (struct atto_vda_schedule_info *)data; 1340 1341 s->id = le32_to_cpu(s->id); 1342 1343 break; 1344 1345 case VDAMGT_DEV_INFO: 1346 case VDAMGT_DEV_CLEAN: 1347 case VDAMGT_DEV_PT_INFO: 1348 case VDAMGT_DEV_FEATURES: 1349 case VDAMGT_DEV_PT_FEATURES: 1350 case VDAMGT_DEV_OPERATION: 1351 1352 d = (struct atto_vda_devinfo *)data; 1353 1354 d->capacity = le64_to_cpu(d->capacity); 1355 d->block_size = le32_to_cpu(d->block_size); 1356 d->ses_dev_index = le16_to_cpu(d->ses_dev_index); 1357 d->target_id = le16_to_cpu(d->target_id); 1358 d->lun = le16_to_cpu(d->lun); 1359 d->features = le16_to_cpu(d->features); 1360 break; 1361 1362 case VDAMGT_GRP_INFO: 1363 case VDAMGT_GRP_CREATE: 1364 case VDAMGT_GRP_DELETE: 1365 case VDAMGT_ADD_STORAGE: 1366 case VDAMGT_MEMBER_ADD: 1367 case VDAMGT_GRP_COMMIT: 1368 case VDAMGT_GRP_REBUILD: 1369 case VDAMGT_GRP_COMMIT_INIT: 1370 case VDAMGT_QUICK_RAID: 1371 case VDAMGT_GRP_FEATURES: 1372 case VDAMGT_GRP_COMMIT_INIT_AUTOMAP: 1373 case VDAMGT_QUICK_RAID_INIT_AUTOMAP: 1374 case VDAMGT_SPARE_LIST: 1375 case VDAMGT_SPARE_ADD: 1376 case VDAMGT_SPARE_REMOVE: 1377 case VDAMGT_LOCAL_SPARE_ADD: 1378 case VDAMGT_GRP_OPERATION: 1379 1380 g = (struct atto_vda_grp_info *)data; 1381 1382 g->capacity = le64_to_cpu(g->capacity); 1383 g->block_size = le32_to_cpu(g->block_size); 1384 g->interleave = le32_to_cpu(g->interleave); 1385 g->features = le16_to_cpu(g->features); 1386 1387 for (i = 0; i < 32; i++) 1388 g->members[i] = le16_to_cpu(g->members[i]); 1389 1390 break; 1391 1392 case VDAMGT_PART_INFO: 1393 case VDAMGT_PART_MAP: 1394 case VDAMGT_PART_UNMAP: 1395 case VDAMGT_PART_AUTOMAP: 1396 case VDAMGT_PART_SPLIT: 1397 case VDAMGT_PART_MERGE: 1398 1399 p = (struct atto_vdapart_info *)data; 1400 1401 p->part_size = le64_to_cpu(p->part_size); 1402 p->start_lba = le32_to_cpu(p->start_lba); 1403 p->block_size = le32_to_cpu(p->block_size); 1404 p->target_id = le16_to_cpu(p->target_id); 1405 break; 1406 1407 case VDAMGT_DEV_HEALTH_REQ: 1408 1409 h = (struct atto_vda_dh_info *)data; 1410 1411 h->med_defect_cnt = le32_to_cpu(h->med_defect_cnt); 1412 h->info_exc_cnt = le32_to_cpu(h->info_exc_cnt); 1413 break; 1414 1415 case VDAMGT_DEV_METRICS: 1416 1417 m = (struct atto_vda_metrics_info *)data; 1418 1419 for (i = 0; i < 32; i++) 1420 m->dev_indexes[i] = le16_to_cpu(m->dev_indexes[i]); 1421 1422 break; 1423 1424 default: 1425 break; 1426 } 1427 } 1428 1429 void esas2r_nuxi_cfg_data(u8 function, void *data) 1430 { 1431 struct atto_vda_cfg_init *ci; 1432 1433 switch (function) { 1434 case VDA_CFG_INIT: 1435 case VDA_CFG_GET_INIT: 1436 case VDA_CFG_GET_INIT2: 1437 1438 ci = (struct atto_vda_cfg_init *)data; 1439 1440 ci->date_time.year = le16_to_cpu(ci->date_time.year); 1441 ci->sgl_page_size = le32_to_cpu(ci->sgl_page_size); 1442 ci->vda_version = le32_to_cpu(ci->vda_version); 1443 ci->epoch_time = le32_to_cpu(ci->epoch_time); 1444 ci->ioctl_tunnel = le32_to_cpu(ci->ioctl_tunnel); 1445 ci->num_targets_backend = le32_to_cpu(ci->num_targets_backend); 1446 break; 1447 1448 default: 1449 break; 1450 } 1451 } 1452 1453 void esas2r_nuxi_ae_data(union atto_vda_ae *ae) 1454 { 1455 struct atto_vda_ae_raid *r = &ae->raid; 1456 struct atto_vda_ae_lu *l = &ae->lu; 1457 1458 switch (ae->hdr.bytype) { 1459 case VDAAE_HDR_TYPE_RAID: 1460 1461 r->dwflags = le32_to_cpu(r->dwflags); 1462 break; 1463 1464 case VDAAE_HDR_TYPE_LU: 1465 1466 l->dwevent = le32_to_cpu(l->dwevent); 1467 l->wphys_target_id = le16_to_cpu(l->wphys_target_id); 1468 l->id.tgtlun.wtarget_id = le16_to_cpu(l->id.tgtlun.wtarget_id); 1469 1470 if (l->hdr.bylength >= offsetof(struct atto_vda_ae_lu, id) 1471 + sizeof(struct atto_vda_ae_lu_tgt_lun_raid)) { 1472 l->id.tgtlun_raid.dwinterleave 1473 = le32_to_cpu(l->id.tgtlun_raid.dwinterleave); 1474 l->id.tgtlun_raid.dwblock_size 1475 = le32_to_cpu(l->id.tgtlun_raid.dwblock_size); 1476 } 1477 1478 break; 1479 1480 case VDAAE_HDR_TYPE_DISK: 1481 default: 1482 break; 1483 } 1484 } 1485 1486 void esas2r_free_request(struct esas2r_adapter *a, struct esas2r_request *rq) 1487 { 1488 unsigned long flags; 1489 1490 esas2r_rq_destroy_request(rq, a); 1491 spin_lock_irqsave(&a->request_lock, flags); 1492 list_add(&rq->comp_list, &a->avail_request); 1493 spin_unlock_irqrestore(&a->request_lock, flags); 1494 } 1495 1496 struct esas2r_request *esas2r_alloc_request(struct esas2r_adapter *a) 1497 { 1498 struct esas2r_request *rq; 1499 unsigned long flags; 1500 1501 spin_lock_irqsave(&a->request_lock, flags); 1502 1503 if (unlikely(list_empty(&a->avail_request))) { 1504 spin_unlock_irqrestore(&a->request_lock, flags); 1505 return NULL; 1506 } 1507 1508 rq = list_first_entry(&a->avail_request, struct esas2r_request, 1509 comp_list); 1510 list_del(&rq->comp_list); 1511 spin_unlock_irqrestore(&a->request_lock, flags); 1512 esas2r_rq_init_request(rq, a); 1513 1514 return rq; 1515 1516 } 1517 1518 void esas2r_complete_request_cb(struct esas2r_adapter *a, 1519 struct esas2r_request *rq) 1520 { 1521 esas2r_debug("completing request %p\n", rq); 1522 1523 scsi_dma_unmap(rq->cmd); 1524 1525 if (unlikely(rq->req_stat != RS_SUCCESS)) { 1526 esas2r_debug("[%x STATUS %x:%x (%x)]", rq->target_id, 1527 rq->req_stat, 1528 rq->func_rsp.scsi_rsp.scsi_stat, 1529 rq->cmd); 1530 1531 rq->cmd->result = 1532 ((esas2r_req_status_to_error(rq->req_stat) << 16) 1533 | (rq->func_rsp.scsi_rsp.scsi_stat & STATUS_MASK)); 1534 1535 if (rq->req_stat == RS_UNDERRUN) 1536 scsi_set_resid(rq->cmd, 1537 le32_to_cpu(rq->func_rsp.scsi_rsp. 1538 residual_length)); 1539 else 1540 scsi_set_resid(rq->cmd, 0); 1541 } 1542 1543 rq->cmd->scsi_done(rq->cmd); 1544 1545 esas2r_free_request(a, rq); 1546 } 1547 1548 /* Run tasklet to handle stuff outside of interrupt context. */ 1549 void esas2r_adapter_tasklet(unsigned long context) 1550 { 1551 struct esas2r_adapter *a = (struct esas2r_adapter *)context; 1552 1553 if (unlikely(test_bit(AF2_TIMER_TICK, &a->flags2))) { 1554 clear_bit(AF2_TIMER_TICK, &a->flags2); 1555 esas2r_timer_tick(a); 1556 } 1557 1558 if (likely(test_bit(AF2_INT_PENDING, &a->flags2))) { 1559 clear_bit(AF2_INT_PENDING, &a->flags2); 1560 esas2r_adapter_interrupt(a); 1561 } 1562 1563 if (esas2r_is_tasklet_pending(a)) 1564 esas2r_do_tasklet_tasks(a); 1565 1566 if (esas2r_is_tasklet_pending(a) 1567 || (test_bit(AF2_INT_PENDING, &a->flags2)) 1568 || (test_bit(AF2_TIMER_TICK, &a->flags2))) { 1569 clear_bit(AF_TASKLET_SCHEDULED, &a->flags); 1570 esas2r_schedule_tasklet(a); 1571 } else { 1572 clear_bit(AF_TASKLET_SCHEDULED, &a->flags); 1573 } 1574 } 1575 1576 static void esas2r_timer_callback(struct timer_list *t); 1577 1578 void esas2r_kickoff_timer(struct esas2r_adapter *a) 1579 { 1580 timer_setup(&a->timer, esas2r_timer_callback, 0); 1581 1582 a->timer.expires = jiffies + 1583 msecs_to_jiffies(100); 1584 1585 add_timer(&a->timer); 1586 } 1587 1588 static void esas2r_timer_callback(struct timer_list *t) 1589 { 1590 struct esas2r_adapter *a = from_timer(a, t, timer); 1591 1592 set_bit(AF2_TIMER_TICK, &a->flags2); 1593 1594 esas2r_schedule_tasklet(a); 1595 1596 esas2r_kickoff_timer(a); 1597 } 1598 1599 /* 1600 * Firmware events need to be handled outside of interrupt context 1601 * so we schedule a delayed_work to handle them. 1602 */ 1603 1604 static void 1605 esas2r_free_fw_event(struct esas2r_fw_event_work *fw_event) 1606 { 1607 unsigned long flags; 1608 struct esas2r_adapter *a = fw_event->a; 1609 1610 spin_lock_irqsave(&a->fw_event_lock, flags); 1611 list_del(&fw_event->list); 1612 kfree(fw_event); 1613 spin_unlock_irqrestore(&a->fw_event_lock, flags); 1614 } 1615 1616 void 1617 esas2r_fw_event_off(struct esas2r_adapter *a) 1618 { 1619 unsigned long flags; 1620 1621 spin_lock_irqsave(&a->fw_event_lock, flags); 1622 a->fw_events_off = 1; 1623 spin_unlock_irqrestore(&a->fw_event_lock, flags); 1624 } 1625 1626 void 1627 esas2r_fw_event_on(struct esas2r_adapter *a) 1628 { 1629 unsigned long flags; 1630 1631 spin_lock_irqsave(&a->fw_event_lock, flags); 1632 a->fw_events_off = 0; 1633 spin_unlock_irqrestore(&a->fw_event_lock, flags); 1634 } 1635 1636 static void esas2r_add_device(struct esas2r_adapter *a, u16 target_id) 1637 { 1638 int ret; 1639 struct scsi_device *scsi_dev; 1640 1641 scsi_dev = scsi_device_lookup(a->host, 0, target_id, 0); 1642 1643 if (scsi_dev) { 1644 esas2r_log_dev( 1645 ESAS2R_LOG_WARN, 1646 &(scsi_dev-> 1647 sdev_gendev), 1648 "scsi device already exists at id %d", target_id); 1649 1650 scsi_device_put(scsi_dev); 1651 } else { 1652 esas2r_log_dev( 1653 ESAS2R_LOG_INFO, 1654 &(a->host-> 1655 shost_gendev), 1656 "scsi_add_device() called for 0:%d:0", 1657 target_id); 1658 1659 ret = scsi_add_device(a->host, 0, target_id, 0); 1660 if (ret) { 1661 esas2r_log_dev( 1662 ESAS2R_LOG_CRIT, 1663 &(a->host-> 1664 shost_gendev), 1665 "scsi_add_device failed with %d for id %d", 1666 ret, target_id); 1667 } 1668 } 1669 } 1670 1671 static void esas2r_remove_device(struct esas2r_adapter *a, u16 target_id) 1672 { 1673 struct scsi_device *scsi_dev; 1674 1675 scsi_dev = scsi_device_lookup(a->host, 0, target_id, 0); 1676 1677 if (scsi_dev) { 1678 scsi_device_set_state(scsi_dev, SDEV_OFFLINE); 1679 1680 esas2r_log_dev( 1681 ESAS2R_LOG_INFO, 1682 &(scsi_dev-> 1683 sdev_gendev), 1684 "scsi_remove_device() called for 0:%d:0", 1685 target_id); 1686 1687 scsi_remove_device(scsi_dev); 1688 1689 esas2r_log_dev( 1690 ESAS2R_LOG_INFO, 1691 &(scsi_dev-> 1692 sdev_gendev), 1693 "scsi_device_put() called"); 1694 1695 scsi_device_put(scsi_dev); 1696 } else { 1697 esas2r_log_dev( 1698 ESAS2R_LOG_WARN, 1699 &(a->host->shost_gendev), 1700 "no target found at id %d", 1701 target_id); 1702 } 1703 } 1704 1705 /* 1706 * Sends a firmware asynchronous event to anyone who happens to be 1707 * listening on the defined ATTO VDA event ports. 1708 */ 1709 static void esas2r_send_ae_event(struct esas2r_fw_event_work *fw_event) 1710 { 1711 struct esas2r_vda_ae *ae = (struct esas2r_vda_ae *)fw_event->data; 1712 char *type; 1713 1714 switch (ae->vda_ae.hdr.bytype) { 1715 case VDAAE_HDR_TYPE_RAID: 1716 type = "RAID group state change"; 1717 break; 1718 1719 case VDAAE_HDR_TYPE_LU: 1720 type = "Mapped destination LU change"; 1721 break; 1722 1723 case VDAAE_HDR_TYPE_DISK: 1724 type = "Physical disk inventory change"; 1725 break; 1726 1727 case VDAAE_HDR_TYPE_RESET: 1728 type = "Firmware reset"; 1729 break; 1730 1731 case VDAAE_HDR_TYPE_LOG_INFO: 1732 type = "Event Log message (INFO level)"; 1733 break; 1734 1735 case VDAAE_HDR_TYPE_LOG_WARN: 1736 type = "Event Log message (WARN level)"; 1737 break; 1738 1739 case VDAAE_HDR_TYPE_LOG_CRIT: 1740 type = "Event Log message (CRIT level)"; 1741 break; 1742 1743 case VDAAE_HDR_TYPE_LOG_FAIL: 1744 type = "Event Log message (FAIL level)"; 1745 break; 1746 1747 case VDAAE_HDR_TYPE_NVC: 1748 type = "NVCache change"; 1749 break; 1750 1751 case VDAAE_HDR_TYPE_TLG_INFO: 1752 type = "Time stamped log message (INFO level)"; 1753 break; 1754 1755 case VDAAE_HDR_TYPE_TLG_WARN: 1756 type = "Time stamped log message (WARN level)"; 1757 break; 1758 1759 case VDAAE_HDR_TYPE_TLG_CRIT: 1760 type = "Time stamped log message (CRIT level)"; 1761 break; 1762 1763 case VDAAE_HDR_TYPE_PWRMGT: 1764 type = "Power management"; 1765 break; 1766 1767 case VDAAE_HDR_TYPE_MUTE: 1768 type = "Mute button pressed"; 1769 break; 1770 1771 case VDAAE_HDR_TYPE_DEV: 1772 type = "Device attribute change"; 1773 break; 1774 1775 default: 1776 type = "Unknown"; 1777 break; 1778 } 1779 1780 esas2r_log(ESAS2R_LOG_WARN, 1781 "An async event of type \"%s\" was received from the firmware. The event contents are:", 1782 type); 1783 esas2r_log_hexdump(ESAS2R_LOG_WARN, &ae->vda_ae, 1784 ae->vda_ae.hdr.bylength); 1785 1786 } 1787 1788 static void 1789 esas2r_firmware_event_work(struct work_struct *work) 1790 { 1791 struct esas2r_fw_event_work *fw_event = 1792 container_of(work, struct esas2r_fw_event_work, work.work); 1793 1794 struct esas2r_adapter *a = fw_event->a; 1795 1796 u16 target_id = *(u16 *)&fw_event->data[0]; 1797 1798 if (a->fw_events_off) 1799 goto done; 1800 1801 switch (fw_event->type) { 1802 case fw_event_null: 1803 break; /* do nothing */ 1804 1805 case fw_event_lun_change: 1806 esas2r_remove_device(a, target_id); 1807 esas2r_add_device(a, target_id); 1808 break; 1809 1810 case fw_event_present: 1811 esas2r_add_device(a, target_id); 1812 break; 1813 1814 case fw_event_not_present: 1815 esas2r_remove_device(a, target_id); 1816 break; 1817 1818 case fw_event_vda_ae: 1819 esas2r_send_ae_event(fw_event); 1820 break; 1821 } 1822 1823 done: 1824 esas2r_free_fw_event(fw_event); 1825 } 1826 1827 void esas2r_queue_fw_event(struct esas2r_adapter *a, 1828 enum fw_event_type type, 1829 void *data, 1830 int data_sz) 1831 { 1832 struct esas2r_fw_event_work *fw_event; 1833 unsigned long flags; 1834 1835 fw_event = kzalloc(sizeof(struct esas2r_fw_event_work), GFP_ATOMIC); 1836 if (!fw_event) { 1837 esas2r_log(ESAS2R_LOG_WARN, 1838 "esas2r_queue_fw_event failed to alloc"); 1839 return; 1840 } 1841 1842 if (type == fw_event_vda_ae) { 1843 struct esas2r_vda_ae *ae = 1844 (struct esas2r_vda_ae *)fw_event->data; 1845 1846 ae->signature = ESAS2R_VDA_EVENT_SIG; 1847 ae->bus_number = a->pcid->bus->number; 1848 ae->devfn = a->pcid->devfn; 1849 memcpy(&ae->vda_ae, data, sizeof(ae->vda_ae)); 1850 } else { 1851 memcpy(fw_event->data, data, data_sz); 1852 } 1853 1854 fw_event->type = type; 1855 fw_event->a = a; 1856 1857 spin_lock_irqsave(&a->fw_event_lock, flags); 1858 list_add_tail(&fw_event->list, &a->fw_event_list); 1859 INIT_DELAYED_WORK(&fw_event->work, esas2r_firmware_event_work); 1860 queue_delayed_work_on( 1861 smp_processor_id(), a->fw_event_q, &fw_event->work, 1862 msecs_to_jiffies(1)); 1863 spin_unlock_irqrestore(&a->fw_event_lock, flags); 1864 } 1865 1866 void esas2r_target_state_changed(struct esas2r_adapter *a, u16 targ_id, 1867 u8 state) 1868 { 1869 if (state == TS_LUN_CHANGE) 1870 esas2r_queue_fw_event(a, fw_event_lun_change, &targ_id, 1871 sizeof(targ_id)); 1872 else if (state == TS_PRESENT) 1873 esas2r_queue_fw_event(a, fw_event_present, &targ_id, 1874 sizeof(targ_id)); 1875 else if (state == TS_NOT_PRESENT) 1876 esas2r_queue_fw_event(a, fw_event_not_present, &targ_id, 1877 sizeof(targ_id)); 1878 } 1879 1880 /* Translate status to a Linux SCSI mid-layer error code */ 1881 int esas2r_req_status_to_error(u8 req_stat) 1882 { 1883 switch (req_stat) { 1884 case RS_OVERRUN: 1885 case RS_UNDERRUN: 1886 case RS_SUCCESS: 1887 /* 1888 * NOTE: SCSI mid-layer wants a good status for a SCSI error, because 1889 * it will check the scsi_stat value in the completion anyway. 1890 */ 1891 case RS_SCSI_ERROR: 1892 return DID_OK; 1893 1894 case RS_SEL: 1895 case RS_SEL2: 1896 return DID_NO_CONNECT; 1897 1898 case RS_RESET: 1899 return DID_RESET; 1900 1901 case RS_ABORTED: 1902 return DID_ABORT; 1903 1904 case RS_BUSY: 1905 return DID_BUS_BUSY; 1906 } 1907 1908 /* everything else is just an error. */ 1909 1910 return DID_ERROR; 1911 } 1912 1913 module_init(esas2r_init); 1914 module_exit(esas2r_exit); 1915