1 /* 2 * This file is provided under a dual BSD/GPLv2 license. When using or 3 * redistributing this file, you may do so under either license. 4 * 5 * GPL LICENSE SUMMARY 6 * 7 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. 8 * 9 * This program is free software; you can redistribute it and/or modify 10 * it under the terms of version 2 of the GNU General Public License as 11 * published by the Free Software Foundation. 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 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. 21 * The full GNU General Public License is included in this distribution 22 * in the file called LICENSE.GPL. 23 * 24 * BSD LICENSE 25 * 26 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved. 27 * All rights reserved. 28 * 29 * Redistribution and use in source and binary forms, with or without 30 * modification, are permitted provided that the following conditions 31 * are met: 32 * 33 * * Redistributions of source code must retain the above copyright 34 * notice, this list of conditions and the following disclaimer. 35 * * Redistributions in binary form must reproduce the above copyright 36 * notice, this list of conditions and the following disclaimer in 37 * the documentation and/or other materials provided with the 38 * distribution. 39 * * Neither the name of Intel Corporation nor the names of its 40 * contributors may be used to endorse or promote products derived 41 * from this software without specific prior written permission. 42 * 43 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 44 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 45 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 46 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 47 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 48 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 49 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 50 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 51 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 52 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 53 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 54 */ 55 56 #include <linux/kernel.h> 57 #include <linux/init.h> 58 #include <linux/module.h> 59 #include <linux/firmware.h> 60 #include <linux/efi.h> 61 #include <asm/string.h> 62 #include <scsi/scsi_host.h> 63 #include "host.h" 64 #include "isci.h" 65 #include "task.h" 66 #include "probe_roms.h" 67 68 #define MAJ 1 69 #define MIN 2 70 #define BUILD 0 71 #define DRV_VERSION __stringify(MAJ) "." __stringify(MIN) "." \ 72 __stringify(BUILD) 73 74 MODULE_VERSION(DRV_VERSION); 75 76 static struct scsi_transport_template *isci_transport_template; 77 78 static const struct pci_device_id isci_id_table[] = { 79 { PCI_VDEVICE(INTEL, 0x1D61),}, 80 { PCI_VDEVICE(INTEL, 0x1D63),}, 81 { PCI_VDEVICE(INTEL, 0x1D65),}, 82 { PCI_VDEVICE(INTEL, 0x1D67),}, 83 { PCI_VDEVICE(INTEL, 0x1D69),}, 84 { PCI_VDEVICE(INTEL, 0x1D6B),}, 85 { PCI_VDEVICE(INTEL, 0x1D60),}, 86 { PCI_VDEVICE(INTEL, 0x1D62),}, 87 { PCI_VDEVICE(INTEL, 0x1D64),}, 88 { PCI_VDEVICE(INTEL, 0x1D66),}, 89 { PCI_VDEVICE(INTEL, 0x1D68),}, 90 { PCI_VDEVICE(INTEL, 0x1D6A),}, 91 {} 92 }; 93 94 MODULE_DEVICE_TABLE(pci, isci_id_table); 95 96 /* linux isci specific settings */ 97 98 unsigned char no_outbound_task_to = 2; 99 module_param(no_outbound_task_to, byte, 0); 100 MODULE_PARM_DESC(no_outbound_task_to, "No Outbound Task Timeout (1us incr)"); 101 102 u16 ssp_max_occ_to = 20; 103 module_param(ssp_max_occ_to, ushort, 0); 104 MODULE_PARM_DESC(ssp_max_occ_to, "SSP Max occupancy timeout (100us incr)"); 105 106 u16 stp_max_occ_to = 5; 107 module_param(stp_max_occ_to, ushort, 0); 108 MODULE_PARM_DESC(stp_max_occ_to, "STP Max occupancy timeout (100us incr)"); 109 110 u16 ssp_inactive_to = 5; 111 module_param(ssp_inactive_to, ushort, 0); 112 MODULE_PARM_DESC(ssp_inactive_to, "SSP inactivity timeout (100us incr)"); 113 114 u16 stp_inactive_to = 5; 115 module_param(stp_inactive_to, ushort, 0); 116 MODULE_PARM_DESC(stp_inactive_to, "STP inactivity timeout (100us incr)"); 117 118 unsigned char phy_gen = SCIC_SDS_PARM_GEN2_SPEED; 119 module_param(phy_gen, byte, 0); 120 MODULE_PARM_DESC(phy_gen, "PHY generation (1: 1.5Gbps 2: 3.0Gbps 3: 6.0Gbps)"); 121 122 unsigned char max_concurr_spinup; 123 module_param(max_concurr_spinup, byte, 0); 124 MODULE_PARM_DESC(max_concurr_spinup, "Max concurrent device spinup"); 125 126 uint cable_selection_override = CABLE_OVERRIDE_DISABLED; 127 module_param(cable_selection_override, uint, 0); 128 129 MODULE_PARM_DESC(cable_selection_override, 130 "This field indicates length of the SAS/SATA cable between " 131 "host and device. If any bits > 15 are set (default) " 132 "indicates \"use platform defaults\""); 133 134 static ssize_t isci_show_id(struct device *dev, struct device_attribute *attr, char *buf) 135 { 136 struct Scsi_Host *shost = container_of(dev, typeof(*shost), shost_dev); 137 struct sas_ha_struct *sas_ha = SHOST_TO_SAS_HA(shost); 138 struct isci_host *ihost = container_of(sas_ha, typeof(*ihost), sas_ha); 139 140 return snprintf(buf, PAGE_SIZE, "%d\n", ihost->id); 141 } 142 143 static DEVICE_ATTR(isci_id, S_IRUGO, isci_show_id, NULL); 144 145 static struct attribute *isci_host_attrs[] = { 146 &dev_attr_isci_id.attr, 147 NULL 148 }; 149 150 ATTRIBUTE_GROUPS(isci_host); 151 152 static struct scsi_host_template isci_sht = { 153 154 .module = THIS_MODULE, 155 .name = DRV_NAME, 156 .proc_name = DRV_NAME, 157 .queuecommand = sas_queuecommand, 158 .dma_need_drain = ata_scsi_dma_need_drain, 159 .target_alloc = sas_target_alloc, 160 .slave_configure = sas_slave_configure, 161 .scan_finished = isci_host_scan_finished, 162 .scan_start = isci_host_start, 163 .change_queue_depth = sas_change_queue_depth, 164 .bios_param = sas_bios_param, 165 .can_queue = ISCI_CAN_QUEUE_VAL, 166 .this_id = -1, 167 .sg_tablesize = SG_ALL, 168 .max_sectors = SCSI_DEFAULT_MAX_SECTORS, 169 .eh_abort_handler = sas_eh_abort_handler, 170 .eh_device_reset_handler = sas_eh_device_reset_handler, 171 .eh_target_reset_handler = sas_eh_target_reset_handler, 172 .slave_alloc = sas_slave_alloc, 173 .target_destroy = sas_target_destroy, 174 .ioctl = sas_ioctl, 175 #ifdef CONFIG_COMPAT 176 .compat_ioctl = sas_ioctl, 177 #endif 178 .shost_groups = isci_host_groups, 179 .track_queue_depth = 1, 180 }; 181 182 static struct sas_domain_function_template isci_transport_ops = { 183 184 /* The class calls these to notify the LLDD of an event. */ 185 .lldd_port_formed = isci_port_formed, 186 .lldd_port_deformed = isci_port_deformed, 187 188 /* The class calls these when a device is found or gone. */ 189 .lldd_dev_found = isci_remote_device_found, 190 .lldd_dev_gone = isci_remote_device_gone, 191 192 .lldd_execute_task = isci_task_execute_task, 193 /* Task Management Functions. Must be called from process context. */ 194 .lldd_abort_task = isci_task_abort_task, 195 .lldd_abort_task_set = isci_task_abort_task_set, 196 .lldd_clear_aca = isci_task_clear_aca, 197 .lldd_clear_task_set = isci_task_clear_task_set, 198 .lldd_I_T_nexus_reset = isci_task_I_T_nexus_reset, 199 .lldd_lu_reset = isci_task_lu_reset, 200 .lldd_query_task = isci_task_query_task, 201 202 /* ata recovery called from ata-eh */ 203 .lldd_ata_check_ready = isci_ata_check_ready, 204 205 /* Port and Adapter management */ 206 .lldd_clear_nexus_port = isci_task_clear_nexus_port, 207 .lldd_clear_nexus_ha = isci_task_clear_nexus_ha, 208 209 /* Phy management */ 210 .lldd_control_phy = isci_phy_control, 211 212 /* GPIO support */ 213 .lldd_write_gpio = isci_gpio_write, 214 }; 215 216 217 /****************************************************************************** 218 * P R O T E C T E D M E T H O D S 219 ******************************************************************************/ 220 221 222 223 /** 224 * isci_register_sas_ha() - This method initializes various lldd 225 * specific members of the sas_ha struct and calls the libsas 226 * sas_register_ha() function. 227 * @isci_host: This parameter specifies the lldd specific wrapper for the 228 * libsas sas_ha struct. 229 * 230 * This method returns an error code indicating success or failure. The user 231 * should check for possible memory allocation error return otherwise, a zero 232 * indicates success. 233 */ 234 static int isci_register_sas_ha(struct isci_host *isci_host) 235 { 236 int i; 237 struct sas_ha_struct *sas_ha = &(isci_host->sas_ha); 238 struct asd_sas_phy **sas_phys; 239 struct asd_sas_port **sas_ports; 240 241 sas_phys = devm_kcalloc(&isci_host->pdev->dev, 242 SCI_MAX_PHYS, sizeof(void *), 243 GFP_KERNEL); 244 if (!sas_phys) 245 return -ENOMEM; 246 247 sas_ports = devm_kcalloc(&isci_host->pdev->dev, 248 SCI_MAX_PORTS, sizeof(void *), 249 GFP_KERNEL); 250 if (!sas_ports) 251 return -ENOMEM; 252 253 sas_ha->sas_ha_name = DRV_NAME; 254 sas_ha->lldd_module = THIS_MODULE; 255 sas_ha->sas_addr = &isci_host->phys[0].sas_addr[0]; 256 257 for (i = 0; i < SCI_MAX_PHYS; i++) { 258 sas_phys[i] = &isci_host->phys[i].sas_phy; 259 sas_ports[i] = &isci_host->sas_ports[i]; 260 } 261 262 sas_ha->sas_phy = sas_phys; 263 sas_ha->sas_port = sas_ports; 264 sas_ha->num_phys = SCI_MAX_PHYS; 265 266 sas_ha->strict_wide_ports = 1; 267 268 sas_register_ha(sas_ha); 269 270 return 0; 271 } 272 273 static void isci_unregister(struct isci_host *isci_host) 274 { 275 struct Scsi_Host *shost; 276 277 if (!isci_host) 278 return; 279 280 shost = to_shost(isci_host); 281 sas_unregister_ha(&isci_host->sas_ha); 282 283 sas_remove_host(shost); 284 scsi_host_put(shost); 285 } 286 287 static int isci_pci_init(struct pci_dev *pdev) 288 { 289 int err, bar_num, bar_mask = 0; 290 void __iomem * const *iomap; 291 292 err = pcim_enable_device(pdev); 293 if (err) { 294 dev_err(&pdev->dev, 295 "failed enable PCI device %s!\n", 296 pci_name(pdev)); 297 return err; 298 } 299 300 for (bar_num = 0; bar_num < SCI_PCI_BAR_COUNT; bar_num++) 301 bar_mask |= 1 << (bar_num * 2); 302 303 err = pcim_iomap_regions(pdev, bar_mask, DRV_NAME); 304 if (err) 305 return err; 306 307 iomap = pcim_iomap_table(pdev); 308 if (!iomap) 309 return -ENOMEM; 310 311 pci_set_master(pdev); 312 313 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); 314 if (err) 315 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); 316 return err; 317 } 318 319 static int num_controllers(struct pci_dev *pdev) 320 { 321 /* bar size alone can tell us if we are running with a dual controller 322 * part, no need to trust revision ids that might be under broken firmware 323 * control 324 */ 325 resource_size_t scu_bar_size = pci_resource_len(pdev, SCI_SCU_BAR*2); 326 resource_size_t smu_bar_size = pci_resource_len(pdev, SCI_SMU_BAR*2); 327 328 if (scu_bar_size >= SCI_SCU_BAR_SIZE*SCI_MAX_CONTROLLERS && 329 smu_bar_size >= SCI_SMU_BAR_SIZE*SCI_MAX_CONTROLLERS) 330 return SCI_MAX_CONTROLLERS; 331 else 332 return 1; 333 } 334 335 static int isci_setup_interrupts(struct pci_dev *pdev) 336 { 337 int err, i, num_msix; 338 struct isci_host *ihost; 339 struct isci_pci_info *pci_info = to_pci_info(pdev); 340 341 /* 342 * Determine the number of vectors associated with this 343 * PCI function. 344 */ 345 num_msix = num_controllers(pdev) * SCI_NUM_MSI_X_INT; 346 347 err = pci_alloc_irq_vectors(pdev, num_msix, num_msix, PCI_IRQ_MSIX); 348 if (err < 0) 349 goto intx; 350 351 for (i = 0; i < num_msix; i++) { 352 int id = i / SCI_NUM_MSI_X_INT; 353 irq_handler_t isr; 354 355 ihost = pci_info->hosts[id]; 356 /* odd numbered vectors are error interrupts */ 357 if (i & 1) 358 isr = isci_error_isr; 359 else 360 isr = isci_msix_isr; 361 362 err = devm_request_irq(&pdev->dev, pci_irq_vector(pdev, i), 363 isr, 0, DRV_NAME"-msix", ihost); 364 if (!err) 365 continue; 366 367 dev_info(&pdev->dev, "msix setup failed falling back to intx\n"); 368 while (i--) { 369 id = i / SCI_NUM_MSI_X_INT; 370 ihost = pci_info->hosts[id]; 371 devm_free_irq(&pdev->dev, pci_irq_vector(pdev, i), 372 ihost); 373 } 374 pci_free_irq_vectors(pdev); 375 goto intx; 376 } 377 return 0; 378 379 intx: 380 for_each_isci_host(i, ihost, pdev) { 381 err = devm_request_irq(&pdev->dev, pci_irq_vector(pdev, 0), 382 isci_intx_isr, IRQF_SHARED, DRV_NAME"-intx", 383 ihost); 384 if (err) 385 break; 386 } 387 return err; 388 } 389 390 static void isci_user_parameters_get(struct sci_user_parameters *u) 391 { 392 int i; 393 394 for (i = 0; i < SCI_MAX_PHYS; i++) { 395 struct sci_phy_user_params *u_phy = &u->phys[i]; 396 397 u_phy->max_speed_generation = phy_gen; 398 399 /* we are not exporting these for now */ 400 u_phy->align_insertion_frequency = 0x7f; 401 u_phy->in_connection_align_insertion_frequency = 0xff; 402 u_phy->notify_enable_spin_up_insertion_frequency = 0x33; 403 } 404 405 u->stp_inactivity_timeout = stp_inactive_to; 406 u->ssp_inactivity_timeout = ssp_inactive_to; 407 u->stp_max_occupancy_timeout = stp_max_occ_to; 408 u->ssp_max_occupancy_timeout = ssp_max_occ_to; 409 u->no_outbound_task_timeout = no_outbound_task_to; 410 u->max_concurr_spinup = max_concurr_spinup; 411 } 412 413 static enum sci_status sci_user_parameters_set(struct isci_host *ihost, 414 struct sci_user_parameters *sci_parms) 415 { 416 u16 index; 417 418 /* 419 * Validate the user parameters. If they are not legal, then 420 * return a failure. 421 */ 422 for (index = 0; index < SCI_MAX_PHYS; index++) { 423 struct sci_phy_user_params *u; 424 425 u = &sci_parms->phys[index]; 426 427 if (!((u->max_speed_generation <= SCIC_SDS_PARM_MAX_SPEED) && 428 (u->max_speed_generation > SCIC_SDS_PARM_NO_SPEED))) 429 return SCI_FAILURE_INVALID_PARAMETER_VALUE; 430 431 if ((u->in_connection_align_insertion_frequency < 3) || 432 (u->align_insertion_frequency == 0) || 433 (u->notify_enable_spin_up_insertion_frequency == 0)) 434 return SCI_FAILURE_INVALID_PARAMETER_VALUE; 435 } 436 437 if ((sci_parms->stp_inactivity_timeout == 0) || 438 (sci_parms->ssp_inactivity_timeout == 0) || 439 (sci_parms->stp_max_occupancy_timeout == 0) || 440 (sci_parms->ssp_max_occupancy_timeout == 0) || 441 (sci_parms->no_outbound_task_timeout == 0)) 442 return SCI_FAILURE_INVALID_PARAMETER_VALUE; 443 444 memcpy(&ihost->user_parameters, sci_parms, sizeof(*sci_parms)); 445 446 return SCI_SUCCESS; 447 } 448 449 static void sci_oem_defaults(struct isci_host *ihost) 450 { 451 /* these defaults are overridden by the platform / firmware */ 452 struct sci_user_parameters *user = &ihost->user_parameters; 453 struct sci_oem_params *oem = &ihost->oem_parameters; 454 int i; 455 456 /* Default to APC mode. */ 457 oem->controller.mode_type = SCIC_PORT_AUTOMATIC_CONFIGURATION_MODE; 458 459 /* Default to APC mode. */ 460 oem->controller.max_concurr_spin_up = 1; 461 462 /* Default to no SSC operation. */ 463 oem->controller.do_enable_ssc = false; 464 465 /* Default to short cables on all phys. */ 466 oem->controller.cable_selection_mask = 0; 467 468 /* Initialize all of the port parameter information to narrow ports. */ 469 for (i = 0; i < SCI_MAX_PORTS; i++) 470 oem->ports[i].phy_mask = 0; 471 472 /* Initialize all of the phy parameter information. */ 473 for (i = 0; i < SCI_MAX_PHYS; i++) { 474 /* Default to 3G (i.e. Gen 2). */ 475 user->phys[i].max_speed_generation = SCIC_SDS_PARM_GEN2_SPEED; 476 477 /* the frequencies cannot be 0 */ 478 user->phys[i].align_insertion_frequency = 0x7f; 479 user->phys[i].in_connection_align_insertion_frequency = 0xff; 480 user->phys[i].notify_enable_spin_up_insertion_frequency = 0x33; 481 482 /* Previous Vitesse based expanders had a arbitration issue that 483 * is worked around by having the upper 32-bits of SAS address 484 * with a value greater then the Vitesse company identifier. 485 * Hence, usage of 0x5FCFFFFF. 486 */ 487 oem->phys[i].sas_address.low = 0x1 + ihost->id; 488 oem->phys[i].sas_address.high = 0x5FCFFFFF; 489 } 490 491 user->stp_inactivity_timeout = 5; 492 user->ssp_inactivity_timeout = 5; 493 user->stp_max_occupancy_timeout = 5; 494 user->ssp_max_occupancy_timeout = 20; 495 user->no_outbound_task_timeout = 2; 496 } 497 498 static struct isci_host *isci_host_alloc(struct pci_dev *pdev, int id) 499 { 500 struct isci_orom *orom = to_pci_info(pdev)->orom; 501 struct sci_user_parameters sci_user_params; 502 u8 oem_version = ISCI_ROM_VER_1_0; 503 struct isci_host *ihost; 504 struct Scsi_Host *shost; 505 int err, i; 506 507 ihost = devm_kzalloc(&pdev->dev, sizeof(*ihost), GFP_KERNEL); 508 if (!ihost) 509 return NULL; 510 511 ihost->pdev = pdev; 512 ihost->id = id; 513 spin_lock_init(&ihost->scic_lock); 514 init_waitqueue_head(&ihost->eventq); 515 ihost->sas_ha.dev = &ihost->pdev->dev; 516 ihost->sas_ha.lldd_ha = ihost; 517 tasklet_init(&ihost->completion_tasklet, 518 isci_host_completion_routine, (unsigned long)ihost); 519 520 /* validate module parameters */ 521 /* TODO: kill struct sci_user_parameters and reference directly */ 522 sci_oem_defaults(ihost); 523 isci_user_parameters_get(&sci_user_params); 524 if (sci_user_parameters_set(ihost, &sci_user_params)) { 525 dev_warn(&pdev->dev, 526 "%s: sci_user_parameters_set failed\n", __func__); 527 return NULL; 528 } 529 530 /* sanity check platform (or 'firmware') oem parameters */ 531 if (orom) { 532 if (id < 0 || id >= SCI_MAX_CONTROLLERS || id > orom->hdr.num_elements) { 533 dev_warn(&pdev->dev, "parsing firmware oem parameters failed\n"); 534 return NULL; 535 } 536 ihost->oem_parameters = orom->ctrl[id]; 537 oem_version = orom->hdr.version; 538 } 539 540 /* validate oem parameters (platform, firmware, or built-in defaults) */ 541 if (sci_oem_parameters_validate(&ihost->oem_parameters, oem_version)) { 542 dev_warn(&pdev->dev, "oem parameter validation failed\n"); 543 return NULL; 544 } 545 546 for (i = 0; i < SCI_MAX_PORTS; i++) { 547 struct isci_port *iport = &ihost->ports[i]; 548 549 INIT_LIST_HEAD(&iport->remote_dev_list); 550 iport->isci_host = ihost; 551 } 552 553 for (i = 0; i < SCI_MAX_PHYS; i++) 554 isci_phy_init(&ihost->phys[i], ihost, i); 555 556 for (i = 0; i < SCI_MAX_REMOTE_DEVICES; i++) { 557 struct isci_remote_device *idev = &ihost->devices[i]; 558 559 INIT_LIST_HEAD(&idev->node); 560 } 561 562 shost = scsi_host_alloc(&isci_sht, sizeof(void *)); 563 if (!shost) 564 return NULL; 565 566 dev_info(&pdev->dev, "%sSCU controller %d: phy 3-0 cables: " 567 "{%s, %s, %s, %s}\n", 568 (is_cable_select_overridden() ? "* " : ""), ihost->id, 569 lookup_cable_names(decode_cable_selection(ihost, 3)), 570 lookup_cable_names(decode_cable_selection(ihost, 2)), 571 lookup_cable_names(decode_cable_selection(ihost, 1)), 572 lookup_cable_names(decode_cable_selection(ihost, 0))); 573 574 err = isci_host_init(ihost); 575 if (err) 576 goto err_shost; 577 578 SHOST_TO_SAS_HA(shost) = &ihost->sas_ha; 579 ihost->sas_ha.core.shost = shost; 580 shost->transportt = isci_transport_template; 581 582 shost->max_id = ~0; 583 shost->max_lun = ~0; 584 shost->max_cmd_len = MAX_COMMAND_SIZE; 585 586 /* turn on DIF support */ 587 scsi_host_set_prot(shost, 588 SHOST_DIF_TYPE1_PROTECTION | 589 SHOST_DIF_TYPE2_PROTECTION | 590 SHOST_DIF_TYPE3_PROTECTION); 591 scsi_host_set_guard(shost, SHOST_DIX_GUARD_CRC); 592 593 err = scsi_add_host(shost, &pdev->dev); 594 if (err) 595 goto err_shost; 596 597 err = isci_register_sas_ha(ihost); 598 if (err) 599 goto err_shost_remove; 600 601 return ihost; 602 603 err_shost_remove: 604 scsi_remove_host(shost); 605 err_shost: 606 scsi_host_put(shost); 607 608 return NULL; 609 } 610 611 static int isci_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) 612 { 613 struct isci_pci_info *pci_info; 614 int err, i; 615 struct isci_host *isci_host; 616 const struct firmware *fw = NULL; 617 struct isci_orom *orom = NULL; 618 char *source = "(platform)"; 619 620 dev_info(&pdev->dev, "driver configured for rev: %d silicon\n", 621 pdev->revision); 622 623 pci_info = devm_kzalloc(&pdev->dev, sizeof(*pci_info), GFP_KERNEL); 624 if (!pci_info) 625 return -ENOMEM; 626 pci_set_drvdata(pdev, pci_info); 627 628 if (efi_rt_services_supported(EFI_RT_SUPPORTED_GET_VARIABLE)) 629 orom = isci_get_efi_var(pdev); 630 631 if (!orom) 632 orom = isci_request_oprom(pdev); 633 634 for (i = 0; orom && i < num_controllers(pdev); i++) { 635 if (sci_oem_parameters_validate(&orom->ctrl[i], 636 orom->hdr.version)) { 637 dev_warn(&pdev->dev, 638 "[%d]: invalid oem parameters detected, falling back to firmware\n", i); 639 orom = NULL; 640 break; 641 } 642 } 643 644 if (!orom) { 645 source = "(firmware)"; 646 orom = isci_request_firmware(pdev, fw); 647 if (!orom) { 648 /* TODO convert this to WARN_TAINT_ONCE once the 649 * orom/efi parameter support is widely available 650 */ 651 dev_warn(&pdev->dev, 652 "Loading user firmware failed, using default " 653 "values\n"); 654 dev_warn(&pdev->dev, 655 "Default OEM configuration being used: 4 " 656 "narrow ports, and default SAS Addresses\n"); 657 } 658 } 659 660 if (orom) 661 dev_info(&pdev->dev, 662 "OEM SAS parameters (version: %u.%u) loaded %s\n", 663 (orom->hdr.version & 0xf0) >> 4, 664 (orom->hdr.version & 0xf), source); 665 666 pci_info->orom = orom; 667 668 err = isci_pci_init(pdev); 669 if (err) 670 return err; 671 672 for (i = 0; i < num_controllers(pdev); i++) { 673 struct isci_host *h = isci_host_alloc(pdev, i); 674 675 if (!h) { 676 err = -ENOMEM; 677 goto err_host_alloc; 678 } 679 pci_info->hosts[i] = h; 680 } 681 682 err = isci_setup_interrupts(pdev); 683 if (err) 684 goto err_host_alloc; 685 686 for_each_isci_host(i, isci_host, pdev) 687 scsi_scan_host(to_shost(isci_host)); 688 689 return 0; 690 691 err_host_alloc: 692 for_each_isci_host(i, isci_host, pdev) 693 isci_unregister(isci_host); 694 return err; 695 } 696 697 static void isci_pci_remove(struct pci_dev *pdev) 698 { 699 struct isci_host *ihost; 700 int i; 701 702 for_each_isci_host(i, ihost, pdev) { 703 wait_for_start(ihost); 704 isci_unregister(ihost); 705 isci_host_deinit(ihost); 706 } 707 } 708 709 #ifdef CONFIG_PM_SLEEP 710 static int isci_suspend(struct device *dev) 711 { 712 struct pci_dev *pdev = to_pci_dev(dev); 713 struct isci_host *ihost; 714 int i; 715 716 for_each_isci_host(i, ihost, pdev) { 717 sas_suspend_ha(&ihost->sas_ha); 718 isci_host_deinit(ihost); 719 } 720 721 return 0; 722 } 723 724 static int isci_resume(struct device *dev) 725 { 726 struct pci_dev *pdev = to_pci_dev(dev); 727 struct isci_host *ihost; 728 int i; 729 730 for_each_isci_host(i, ihost, pdev) { 731 sas_prep_resume_ha(&ihost->sas_ha); 732 733 isci_host_init(ihost); 734 isci_host_start(ihost->sas_ha.core.shost); 735 wait_for_start(ihost); 736 737 sas_resume_ha(&ihost->sas_ha); 738 } 739 740 return 0; 741 } 742 #endif 743 744 static SIMPLE_DEV_PM_OPS(isci_pm_ops, isci_suspend, isci_resume); 745 746 static struct pci_driver isci_pci_driver = { 747 .name = DRV_NAME, 748 .id_table = isci_id_table, 749 .probe = isci_pci_probe, 750 .remove = isci_pci_remove, 751 .driver.pm = &isci_pm_ops, 752 }; 753 754 static __init int isci_init(void) 755 { 756 int err; 757 758 pr_info("%s: Intel(R) C600 SAS Controller Driver - version %s\n", 759 DRV_NAME, DRV_VERSION); 760 761 isci_transport_template = sas_domain_attach_transport(&isci_transport_ops); 762 if (!isci_transport_template) 763 return -ENOMEM; 764 765 err = pci_register_driver(&isci_pci_driver); 766 if (err) 767 sas_release_transport(isci_transport_template); 768 769 return err; 770 } 771 772 static __exit void isci_exit(void) 773 { 774 pci_unregister_driver(&isci_pci_driver); 775 sas_release_transport(isci_transport_template); 776 } 777 778 MODULE_LICENSE("Dual BSD/GPL"); 779 MODULE_FIRMWARE(ISCI_FW_NAME); 780 module_init(isci_init); 781 module_exit(isci_exit); 782