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 device_attribute *isci_host_attrs[] = { 146 &dev_attr_isci_id, 147 NULL 148 }; 149 150 static struct scsi_host_template isci_sht = { 151 152 .module = THIS_MODULE, 153 .name = DRV_NAME, 154 .proc_name = DRV_NAME, 155 .queuecommand = sas_queuecommand, 156 .dma_need_drain = ata_scsi_dma_need_drain, 157 .target_alloc = sas_target_alloc, 158 .slave_configure = sas_slave_configure, 159 .scan_finished = isci_host_scan_finished, 160 .scan_start = isci_host_start, 161 .change_queue_depth = sas_change_queue_depth, 162 .bios_param = sas_bios_param, 163 .can_queue = ISCI_CAN_QUEUE_VAL, 164 .this_id = -1, 165 .sg_tablesize = SG_ALL, 166 .max_sectors = SCSI_DEFAULT_MAX_SECTORS, 167 .eh_abort_handler = sas_eh_abort_handler, 168 .eh_device_reset_handler = sas_eh_device_reset_handler, 169 .eh_target_reset_handler = sas_eh_target_reset_handler, 170 .slave_alloc = sas_slave_alloc, 171 .target_destroy = sas_target_destroy, 172 .ioctl = sas_ioctl, 173 #ifdef CONFIG_COMPAT 174 .compat_ioctl = sas_ioctl, 175 #endif 176 .shost_attrs = isci_host_attrs, 177 .track_queue_depth = 1, 178 }; 179 180 static struct sas_domain_function_template isci_transport_ops = { 181 182 /* The class calls these to notify the LLDD of an event. */ 183 .lldd_port_formed = isci_port_formed, 184 .lldd_port_deformed = isci_port_deformed, 185 186 /* The class calls these when a device is found or gone. */ 187 .lldd_dev_found = isci_remote_device_found, 188 .lldd_dev_gone = isci_remote_device_gone, 189 190 .lldd_execute_task = isci_task_execute_task, 191 /* Task Management Functions. Must be called from process context. */ 192 .lldd_abort_task = isci_task_abort_task, 193 .lldd_abort_task_set = isci_task_abort_task_set, 194 .lldd_clear_aca = isci_task_clear_aca, 195 .lldd_clear_task_set = isci_task_clear_task_set, 196 .lldd_I_T_nexus_reset = isci_task_I_T_nexus_reset, 197 .lldd_lu_reset = isci_task_lu_reset, 198 .lldd_query_task = isci_task_query_task, 199 200 /* ata recovery called from ata-eh */ 201 .lldd_ata_check_ready = isci_ata_check_ready, 202 203 /* Port and Adapter management */ 204 .lldd_clear_nexus_port = isci_task_clear_nexus_port, 205 .lldd_clear_nexus_ha = isci_task_clear_nexus_ha, 206 207 /* Phy management */ 208 .lldd_control_phy = isci_phy_control, 209 210 /* GPIO support */ 211 .lldd_write_gpio = isci_gpio_write, 212 }; 213 214 215 /****************************************************************************** 216 * P R O T E C T E D M E T H O D S 217 ******************************************************************************/ 218 219 220 221 /** 222 * isci_register_sas_ha() - This method initializes various lldd 223 * specific members of the sas_ha struct and calls the libsas 224 * sas_register_ha() function. 225 * @isci_host: This parameter specifies the lldd specific wrapper for the 226 * libsas sas_ha struct. 227 * 228 * This method returns an error code indicating success or failure. The user 229 * should check for possible memory allocation error return otherwise, a zero 230 * indicates success. 231 */ 232 static int isci_register_sas_ha(struct isci_host *isci_host) 233 { 234 int i; 235 struct sas_ha_struct *sas_ha = &(isci_host->sas_ha); 236 struct asd_sas_phy **sas_phys; 237 struct asd_sas_port **sas_ports; 238 239 sas_phys = devm_kcalloc(&isci_host->pdev->dev, 240 SCI_MAX_PHYS, sizeof(void *), 241 GFP_KERNEL); 242 if (!sas_phys) 243 return -ENOMEM; 244 245 sas_ports = devm_kcalloc(&isci_host->pdev->dev, 246 SCI_MAX_PORTS, sizeof(void *), 247 GFP_KERNEL); 248 if (!sas_ports) 249 return -ENOMEM; 250 251 sas_ha->sas_ha_name = DRV_NAME; 252 sas_ha->lldd_module = THIS_MODULE; 253 sas_ha->sas_addr = &isci_host->phys[0].sas_addr[0]; 254 255 for (i = 0; i < SCI_MAX_PHYS; i++) { 256 sas_phys[i] = &isci_host->phys[i].sas_phy; 257 sas_ports[i] = &isci_host->sas_ports[i]; 258 } 259 260 sas_ha->sas_phy = sas_phys; 261 sas_ha->sas_port = sas_ports; 262 sas_ha->num_phys = SCI_MAX_PHYS; 263 264 sas_ha->strict_wide_ports = 1; 265 266 sas_register_ha(sas_ha); 267 268 return 0; 269 } 270 271 static void isci_unregister(struct isci_host *isci_host) 272 { 273 struct Scsi_Host *shost; 274 275 if (!isci_host) 276 return; 277 278 shost = to_shost(isci_host); 279 sas_unregister_ha(&isci_host->sas_ha); 280 281 sas_remove_host(shost); 282 scsi_host_put(shost); 283 } 284 285 static int isci_pci_init(struct pci_dev *pdev) 286 { 287 int err, bar_num, bar_mask = 0; 288 void __iomem * const *iomap; 289 290 err = pcim_enable_device(pdev); 291 if (err) { 292 dev_err(&pdev->dev, 293 "failed enable PCI device %s!\n", 294 pci_name(pdev)); 295 return err; 296 } 297 298 for (bar_num = 0; bar_num < SCI_PCI_BAR_COUNT; bar_num++) 299 bar_mask |= 1 << (bar_num * 2); 300 301 err = pcim_iomap_regions(pdev, bar_mask, DRV_NAME); 302 if (err) 303 return err; 304 305 iomap = pcim_iomap_table(pdev); 306 if (!iomap) 307 return -ENOMEM; 308 309 pci_set_master(pdev); 310 311 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); 312 if (err) 313 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); 314 return err; 315 } 316 317 static int num_controllers(struct pci_dev *pdev) 318 { 319 /* bar size alone can tell us if we are running with a dual controller 320 * part, no need to trust revision ids that might be under broken firmware 321 * control 322 */ 323 resource_size_t scu_bar_size = pci_resource_len(pdev, SCI_SCU_BAR*2); 324 resource_size_t smu_bar_size = pci_resource_len(pdev, SCI_SMU_BAR*2); 325 326 if (scu_bar_size >= SCI_SCU_BAR_SIZE*SCI_MAX_CONTROLLERS && 327 smu_bar_size >= SCI_SMU_BAR_SIZE*SCI_MAX_CONTROLLERS) 328 return SCI_MAX_CONTROLLERS; 329 else 330 return 1; 331 } 332 333 static int isci_setup_interrupts(struct pci_dev *pdev) 334 { 335 int err, i, num_msix; 336 struct isci_host *ihost; 337 struct isci_pci_info *pci_info = to_pci_info(pdev); 338 339 /* 340 * Determine the number of vectors associated with this 341 * PCI function. 342 */ 343 num_msix = num_controllers(pdev) * SCI_NUM_MSI_X_INT; 344 345 err = pci_alloc_irq_vectors(pdev, num_msix, num_msix, PCI_IRQ_MSIX); 346 if (err < 0) 347 goto intx; 348 349 for (i = 0; i < num_msix; i++) { 350 int id = i / SCI_NUM_MSI_X_INT; 351 irq_handler_t isr; 352 353 ihost = pci_info->hosts[id]; 354 /* odd numbered vectors are error interrupts */ 355 if (i & 1) 356 isr = isci_error_isr; 357 else 358 isr = isci_msix_isr; 359 360 err = devm_request_irq(&pdev->dev, pci_irq_vector(pdev, i), 361 isr, 0, DRV_NAME"-msix", ihost); 362 if (!err) 363 continue; 364 365 dev_info(&pdev->dev, "msix setup failed falling back to intx\n"); 366 while (i--) { 367 id = i / SCI_NUM_MSI_X_INT; 368 ihost = pci_info->hosts[id]; 369 devm_free_irq(&pdev->dev, pci_irq_vector(pdev, i), 370 ihost); 371 } 372 pci_free_irq_vectors(pdev); 373 goto intx; 374 } 375 return 0; 376 377 intx: 378 for_each_isci_host(i, ihost, pdev) { 379 err = devm_request_irq(&pdev->dev, pci_irq_vector(pdev, 0), 380 isci_intx_isr, IRQF_SHARED, DRV_NAME"-intx", 381 ihost); 382 if (err) 383 break; 384 } 385 return err; 386 } 387 388 static void isci_user_parameters_get(struct sci_user_parameters *u) 389 { 390 int i; 391 392 for (i = 0; i < SCI_MAX_PHYS; i++) { 393 struct sci_phy_user_params *u_phy = &u->phys[i]; 394 395 u_phy->max_speed_generation = phy_gen; 396 397 /* we are not exporting these for now */ 398 u_phy->align_insertion_frequency = 0x7f; 399 u_phy->in_connection_align_insertion_frequency = 0xff; 400 u_phy->notify_enable_spin_up_insertion_frequency = 0x33; 401 } 402 403 u->stp_inactivity_timeout = stp_inactive_to; 404 u->ssp_inactivity_timeout = ssp_inactive_to; 405 u->stp_max_occupancy_timeout = stp_max_occ_to; 406 u->ssp_max_occupancy_timeout = ssp_max_occ_to; 407 u->no_outbound_task_timeout = no_outbound_task_to; 408 u->max_concurr_spinup = max_concurr_spinup; 409 } 410 411 static enum sci_status sci_user_parameters_set(struct isci_host *ihost, 412 struct sci_user_parameters *sci_parms) 413 { 414 u16 index; 415 416 /* 417 * Validate the user parameters. If they are not legal, then 418 * return a failure. 419 */ 420 for (index = 0; index < SCI_MAX_PHYS; index++) { 421 struct sci_phy_user_params *u; 422 423 u = &sci_parms->phys[index]; 424 425 if (!((u->max_speed_generation <= SCIC_SDS_PARM_MAX_SPEED) && 426 (u->max_speed_generation > SCIC_SDS_PARM_NO_SPEED))) 427 return SCI_FAILURE_INVALID_PARAMETER_VALUE; 428 429 if ((u->in_connection_align_insertion_frequency < 3) || 430 (u->align_insertion_frequency == 0) || 431 (u->notify_enable_spin_up_insertion_frequency == 0)) 432 return SCI_FAILURE_INVALID_PARAMETER_VALUE; 433 } 434 435 if ((sci_parms->stp_inactivity_timeout == 0) || 436 (sci_parms->ssp_inactivity_timeout == 0) || 437 (sci_parms->stp_max_occupancy_timeout == 0) || 438 (sci_parms->ssp_max_occupancy_timeout == 0) || 439 (sci_parms->no_outbound_task_timeout == 0)) 440 return SCI_FAILURE_INVALID_PARAMETER_VALUE; 441 442 memcpy(&ihost->user_parameters, sci_parms, sizeof(*sci_parms)); 443 444 return SCI_SUCCESS; 445 } 446 447 static void sci_oem_defaults(struct isci_host *ihost) 448 { 449 /* these defaults are overridden by the platform / firmware */ 450 struct sci_user_parameters *user = &ihost->user_parameters; 451 struct sci_oem_params *oem = &ihost->oem_parameters; 452 int i; 453 454 /* Default to APC mode. */ 455 oem->controller.mode_type = SCIC_PORT_AUTOMATIC_CONFIGURATION_MODE; 456 457 /* Default to APC mode. */ 458 oem->controller.max_concurr_spin_up = 1; 459 460 /* Default to no SSC operation. */ 461 oem->controller.do_enable_ssc = false; 462 463 /* Default to short cables on all phys. */ 464 oem->controller.cable_selection_mask = 0; 465 466 /* Initialize all of the port parameter information to narrow ports. */ 467 for (i = 0; i < SCI_MAX_PORTS; i++) 468 oem->ports[i].phy_mask = 0; 469 470 /* Initialize all of the phy parameter information. */ 471 for (i = 0; i < SCI_MAX_PHYS; i++) { 472 /* Default to 3G (i.e. Gen 2). */ 473 user->phys[i].max_speed_generation = SCIC_SDS_PARM_GEN2_SPEED; 474 475 /* the frequencies cannot be 0 */ 476 user->phys[i].align_insertion_frequency = 0x7f; 477 user->phys[i].in_connection_align_insertion_frequency = 0xff; 478 user->phys[i].notify_enable_spin_up_insertion_frequency = 0x33; 479 480 /* Previous Vitesse based expanders had a arbitration issue that 481 * is worked around by having the upper 32-bits of SAS address 482 * with a value greater then the Vitesse company identifier. 483 * Hence, usage of 0x5FCFFFFF. 484 */ 485 oem->phys[i].sas_address.low = 0x1 + ihost->id; 486 oem->phys[i].sas_address.high = 0x5FCFFFFF; 487 } 488 489 user->stp_inactivity_timeout = 5; 490 user->ssp_inactivity_timeout = 5; 491 user->stp_max_occupancy_timeout = 5; 492 user->ssp_max_occupancy_timeout = 20; 493 user->no_outbound_task_timeout = 2; 494 } 495 496 static struct isci_host *isci_host_alloc(struct pci_dev *pdev, int id) 497 { 498 struct isci_orom *orom = to_pci_info(pdev)->orom; 499 struct sci_user_parameters sci_user_params; 500 u8 oem_version = ISCI_ROM_VER_1_0; 501 struct isci_host *ihost; 502 struct Scsi_Host *shost; 503 int err, i; 504 505 ihost = devm_kzalloc(&pdev->dev, sizeof(*ihost), GFP_KERNEL); 506 if (!ihost) 507 return NULL; 508 509 ihost->pdev = pdev; 510 ihost->id = id; 511 spin_lock_init(&ihost->scic_lock); 512 init_waitqueue_head(&ihost->eventq); 513 ihost->sas_ha.dev = &ihost->pdev->dev; 514 ihost->sas_ha.lldd_ha = ihost; 515 tasklet_init(&ihost->completion_tasklet, 516 isci_host_completion_routine, (unsigned long)ihost); 517 518 /* validate module parameters */ 519 /* TODO: kill struct sci_user_parameters and reference directly */ 520 sci_oem_defaults(ihost); 521 isci_user_parameters_get(&sci_user_params); 522 if (sci_user_parameters_set(ihost, &sci_user_params)) { 523 dev_warn(&pdev->dev, 524 "%s: sci_user_parameters_set failed\n", __func__); 525 return NULL; 526 } 527 528 /* sanity check platform (or 'firmware') oem parameters */ 529 if (orom) { 530 if (id < 0 || id >= SCI_MAX_CONTROLLERS || id > orom->hdr.num_elements) { 531 dev_warn(&pdev->dev, "parsing firmware oem parameters failed\n"); 532 return NULL; 533 } 534 ihost->oem_parameters = orom->ctrl[id]; 535 oem_version = orom->hdr.version; 536 } 537 538 /* validate oem parameters (platform, firmware, or built-in defaults) */ 539 if (sci_oem_parameters_validate(&ihost->oem_parameters, oem_version)) { 540 dev_warn(&pdev->dev, "oem parameter validation failed\n"); 541 return NULL; 542 } 543 544 for (i = 0; i < SCI_MAX_PORTS; i++) { 545 struct isci_port *iport = &ihost->ports[i]; 546 547 INIT_LIST_HEAD(&iport->remote_dev_list); 548 iport->isci_host = ihost; 549 } 550 551 for (i = 0; i < SCI_MAX_PHYS; i++) 552 isci_phy_init(&ihost->phys[i], ihost, i); 553 554 for (i = 0; i < SCI_MAX_REMOTE_DEVICES; i++) { 555 struct isci_remote_device *idev = &ihost->devices[i]; 556 557 INIT_LIST_HEAD(&idev->node); 558 } 559 560 shost = scsi_host_alloc(&isci_sht, sizeof(void *)); 561 if (!shost) 562 return NULL; 563 564 dev_info(&pdev->dev, "%sSCU controller %d: phy 3-0 cables: " 565 "{%s, %s, %s, %s}\n", 566 (is_cable_select_overridden() ? "* " : ""), ihost->id, 567 lookup_cable_names(decode_cable_selection(ihost, 3)), 568 lookup_cable_names(decode_cable_selection(ihost, 2)), 569 lookup_cable_names(decode_cable_selection(ihost, 1)), 570 lookup_cable_names(decode_cable_selection(ihost, 0))); 571 572 err = isci_host_init(ihost); 573 if (err) 574 goto err_shost; 575 576 SHOST_TO_SAS_HA(shost) = &ihost->sas_ha; 577 ihost->sas_ha.core.shost = shost; 578 shost->transportt = isci_transport_template; 579 580 shost->max_id = ~0; 581 shost->max_lun = ~0; 582 shost->max_cmd_len = MAX_COMMAND_SIZE; 583 584 /* turn on DIF support */ 585 scsi_host_set_prot(shost, 586 SHOST_DIF_TYPE1_PROTECTION | 587 SHOST_DIF_TYPE2_PROTECTION | 588 SHOST_DIF_TYPE3_PROTECTION); 589 scsi_host_set_guard(shost, SHOST_DIX_GUARD_CRC); 590 591 err = scsi_add_host(shost, &pdev->dev); 592 if (err) 593 goto err_shost; 594 595 err = isci_register_sas_ha(ihost); 596 if (err) 597 goto err_shost_remove; 598 599 return ihost; 600 601 err_shost_remove: 602 scsi_remove_host(shost); 603 err_shost: 604 scsi_host_put(shost); 605 606 return NULL; 607 } 608 609 static int isci_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) 610 { 611 struct isci_pci_info *pci_info; 612 int err, i; 613 struct isci_host *isci_host; 614 const struct firmware *fw = NULL; 615 struct isci_orom *orom = NULL; 616 char *source = "(platform)"; 617 618 dev_info(&pdev->dev, "driver configured for rev: %d silicon\n", 619 pdev->revision); 620 621 pci_info = devm_kzalloc(&pdev->dev, sizeof(*pci_info), GFP_KERNEL); 622 if (!pci_info) 623 return -ENOMEM; 624 pci_set_drvdata(pdev, pci_info); 625 626 if (efi_rt_services_supported(EFI_RT_SUPPORTED_GET_VARIABLE)) 627 orom = isci_get_efi_var(pdev); 628 629 if (!orom) 630 orom = isci_request_oprom(pdev); 631 632 for (i = 0; orom && i < num_controllers(pdev); i++) { 633 if (sci_oem_parameters_validate(&orom->ctrl[i], 634 orom->hdr.version)) { 635 dev_warn(&pdev->dev, 636 "[%d]: invalid oem parameters detected, falling back to firmware\n", i); 637 orom = NULL; 638 break; 639 } 640 } 641 642 if (!orom) { 643 source = "(firmware)"; 644 orom = isci_request_firmware(pdev, fw); 645 if (!orom) { 646 /* TODO convert this to WARN_TAINT_ONCE once the 647 * orom/efi parameter support is widely available 648 */ 649 dev_warn(&pdev->dev, 650 "Loading user firmware failed, using default " 651 "values\n"); 652 dev_warn(&pdev->dev, 653 "Default OEM configuration being used: 4 " 654 "narrow ports, and default SAS Addresses\n"); 655 } 656 } 657 658 if (orom) 659 dev_info(&pdev->dev, 660 "OEM SAS parameters (version: %u.%u) loaded %s\n", 661 (orom->hdr.version & 0xf0) >> 4, 662 (orom->hdr.version & 0xf), source); 663 664 pci_info->orom = orom; 665 666 err = isci_pci_init(pdev); 667 if (err) 668 return err; 669 670 for (i = 0; i < num_controllers(pdev); i++) { 671 struct isci_host *h = isci_host_alloc(pdev, i); 672 673 if (!h) { 674 err = -ENOMEM; 675 goto err_host_alloc; 676 } 677 pci_info->hosts[i] = h; 678 } 679 680 err = isci_setup_interrupts(pdev); 681 if (err) 682 goto err_host_alloc; 683 684 for_each_isci_host(i, isci_host, pdev) 685 scsi_scan_host(to_shost(isci_host)); 686 687 return 0; 688 689 err_host_alloc: 690 for_each_isci_host(i, isci_host, pdev) 691 isci_unregister(isci_host); 692 return err; 693 } 694 695 static void isci_pci_remove(struct pci_dev *pdev) 696 { 697 struct isci_host *ihost; 698 int i; 699 700 for_each_isci_host(i, ihost, pdev) { 701 wait_for_start(ihost); 702 isci_unregister(ihost); 703 isci_host_deinit(ihost); 704 } 705 } 706 707 #ifdef CONFIG_PM_SLEEP 708 static int isci_suspend(struct device *dev) 709 { 710 struct pci_dev *pdev = to_pci_dev(dev); 711 struct isci_host *ihost; 712 int i; 713 714 for_each_isci_host(i, ihost, pdev) { 715 sas_suspend_ha(&ihost->sas_ha); 716 isci_host_deinit(ihost); 717 } 718 719 return 0; 720 } 721 722 static int isci_resume(struct device *dev) 723 { 724 struct pci_dev *pdev = to_pci_dev(dev); 725 struct isci_host *ihost; 726 int i; 727 728 for_each_isci_host(i, ihost, pdev) { 729 sas_prep_resume_ha(&ihost->sas_ha); 730 731 isci_host_init(ihost); 732 isci_host_start(ihost->sas_ha.core.shost); 733 wait_for_start(ihost); 734 735 sas_resume_ha(&ihost->sas_ha); 736 } 737 738 return 0; 739 } 740 #endif 741 742 static SIMPLE_DEV_PM_OPS(isci_pm_ops, isci_suspend, isci_resume); 743 744 static struct pci_driver isci_pci_driver = { 745 .name = DRV_NAME, 746 .id_table = isci_id_table, 747 .probe = isci_pci_probe, 748 .remove = isci_pci_remove, 749 .driver.pm = &isci_pm_ops, 750 }; 751 752 static __init int isci_init(void) 753 { 754 int err; 755 756 pr_info("%s: Intel(R) C600 SAS Controller Driver - version %s\n", 757 DRV_NAME, DRV_VERSION); 758 759 isci_transport_template = sas_domain_attach_transport(&isci_transport_ops); 760 if (!isci_transport_template) 761 return -ENOMEM; 762 763 err = pci_register_driver(&isci_pci_driver); 764 if (err) 765 sas_release_transport(isci_transport_template); 766 767 return err; 768 } 769 770 static __exit void isci_exit(void) 771 { 772 pci_unregister_driver(&isci_pci_driver); 773 sas_release_transport(isci_transport_template); 774 } 775 776 MODULE_LICENSE("Dual BSD/GPL"); 777 MODULE_FIRMWARE(ISCI_FW_NAME); 778 module_init(isci_init); 779 module_exit(isci_exit); 780