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 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 .target_alloc = sas_target_alloc, 157 .slave_configure = sas_slave_configure, 158 .scan_finished = isci_host_scan_finished, 159 .scan_start = isci_host_start, 160 .change_queue_depth = sas_change_queue_depth, 161 .bios_param = sas_bios_param, 162 .can_queue = ISCI_CAN_QUEUE_VAL, 163 .this_id = -1, 164 .sg_tablesize = SG_ALL, 165 .max_sectors = SCSI_DEFAULT_MAX_SECTORS, 166 .use_clustering = ENABLE_CLUSTERING, 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 .target_destroy = sas_target_destroy, 171 .ioctl = sas_ioctl, 172 .shost_attrs = isci_host_attrs, 173 .track_queue_depth = 1, 174 }; 175 176 static struct sas_domain_function_template isci_transport_ops = { 177 178 /* The class calls these to notify the LLDD of an event. */ 179 .lldd_port_formed = isci_port_formed, 180 .lldd_port_deformed = isci_port_deformed, 181 182 /* The class calls these when a device is found or gone. */ 183 .lldd_dev_found = isci_remote_device_found, 184 .lldd_dev_gone = isci_remote_device_gone, 185 186 .lldd_execute_task = isci_task_execute_task, 187 /* Task Management Functions. Must be called from process context. */ 188 .lldd_abort_task = isci_task_abort_task, 189 .lldd_abort_task_set = isci_task_abort_task_set, 190 .lldd_clear_aca = isci_task_clear_aca, 191 .lldd_clear_task_set = isci_task_clear_task_set, 192 .lldd_I_T_nexus_reset = isci_task_I_T_nexus_reset, 193 .lldd_lu_reset = isci_task_lu_reset, 194 .lldd_query_task = isci_task_query_task, 195 196 /* ata recovery called from ata-eh */ 197 .lldd_ata_check_ready = isci_ata_check_ready, 198 199 /* Port and Adapter management */ 200 .lldd_clear_nexus_port = isci_task_clear_nexus_port, 201 .lldd_clear_nexus_ha = isci_task_clear_nexus_ha, 202 203 /* Phy management */ 204 .lldd_control_phy = isci_phy_control, 205 206 /* GPIO support */ 207 .lldd_write_gpio = isci_gpio_write, 208 }; 209 210 211 /****************************************************************************** 212 * P R O T E C T E D M E T H O D S 213 ******************************************************************************/ 214 215 216 217 /** 218 * isci_register_sas_ha() - This method initializes various lldd 219 * specific members of the sas_ha struct and calls the libsas 220 * sas_register_ha() function. 221 * @isci_host: This parameter specifies the lldd specific wrapper for the 222 * libsas sas_ha struct. 223 * 224 * This method returns an error code indicating success or failure. The user 225 * should check for possible memory allocation error return otherwise, a zero 226 * indicates success. 227 */ 228 static int isci_register_sas_ha(struct isci_host *isci_host) 229 { 230 int i; 231 struct sas_ha_struct *sas_ha = &(isci_host->sas_ha); 232 struct asd_sas_phy **sas_phys; 233 struct asd_sas_port **sas_ports; 234 235 sas_phys = devm_kzalloc(&isci_host->pdev->dev, 236 SCI_MAX_PHYS * sizeof(void *), 237 GFP_KERNEL); 238 if (!sas_phys) 239 return -ENOMEM; 240 241 sas_ports = devm_kzalloc(&isci_host->pdev->dev, 242 SCI_MAX_PORTS * sizeof(void *), 243 GFP_KERNEL); 244 if (!sas_ports) 245 return -ENOMEM; 246 247 sas_ha->sas_ha_name = DRV_NAME; 248 sas_ha->lldd_module = THIS_MODULE; 249 sas_ha->sas_addr = &isci_host->phys[0].sas_addr[0]; 250 251 for (i = 0; i < SCI_MAX_PHYS; i++) { 252 sas_phys[i] = &isci_host->phys[i].sas_phy; 253 sas_ports[i] = &isci_host->sas_ports[i]; 254 } 255 256 sas_ha->sas_phy = sas_phys; 257 sas_ha->sas_port = sas_ports; 258 sas_ha->num_phys = SCI_MAX_PHYS; 259 260 sas_ha->strict_wide_ports = 1; 261 262 sas_register_ha(sas_ha); 263 264 return 0; 265 } 266 267 static void isci_unregister(struct isci_host *isci_host) 268 { 269 struct Scsi_Host *shost; 270 271 if (!isci_host) 272 return; 273 274 shost = to_shost(isci_host); 275 sas_unregister_ha(&isci_host->sas_ha); 276 277 sas_remove_host(shost); 278 scsi_host_put(shost); 279 } 280 281 static int isci_pci_init(struct pci_dev *pdev) 282 { 283 int err, bar_num, bar_mask = 0; 284 void __iomem * const *iomap; 285 286 err = pcim_enable_device(pdev); 287 if (err) { 288 dev_err(&pdev->dev, 289 "failed enable PCI device %s!\n", 290 pci_name(pdev)); 291 return err; 292 } 293 294 for (bar_num = 0; bar_num < SCI_PCI_BAR_COUNT; bar_num++) 295 bar_mask |= 1 << (bar_num * 2); 296 297 err = pcim_iomap_regions(pdev, bar_mask, DRV_NAME); 298 if (err) 299 return err; 300 301 iomap = pcim_iomap_table(pdev); 302 if (!iomap) 303 return -ENOMEM; 304 305 pci_set_master(pdev); 306 307 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64)); 308 if (err) { 309 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32)); 310 if (err) 311 return err; 312 } 313 314 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); 315 if (err) { 316 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); 317 if (err) 318 return err; 319 } 320 321 return 0; 322 } 323 324 static int num_controllers(struct pci_dev *pdev) 325 { 326 /* bar size alone can tell us if we are running with a dual controller 327 * part, no need to trust revision ids that might be under broken firmware 328 * control 329 */ 330 resource_size_t scu_bar_size = pci_resource_len(pdev, SCI_SCU_BAR*2); 331 resource_size_t smu_bar_size = pci_resource_len(pdev, SCI_SMU_BAR*2); 332 333 if (scu_bar_size >= SCI_SCU_BAR_SIZE*SCI_MAX_CONTROLLERS && 334 smu_bar_size >= SCI_SMU_BAR_SIZE*SCI_MAX_CONTROLLERS) 335 return SCI_MAX_CONTROLLERS; 336 else 337 return 1; 338 } 339 340 static int isci_setup_interrupts(struct pci_dev *pdev) 341 { 342 int err, i, num_msix; 343 struct isci_host *ihost; 344 struct isci_pci_info *pci_info = to_pci_info(pdev); 345 346 /* 347 * Determine the number of vectors associated with this 348 * PCI function. 349 */ 350 num_msix = num_controllers(pdev) * SCI_NUM_MSI_X_INT; 351 352 err = pci_alloc_irq_vectors(pdev, num_msix, num_msix, PCI_IRQ_MSIX); 353 if (err < 0) 354 goto intx; 355 356 for (i = 0; i < num_msix; i++) { 357 int id = i / SCI_NUM_MSI_X_INT; 358 irq_handler_t isr; 359 360 ihost = pci_info->hosts[id]; 361 /* odd numbered vectors are error interrupts */ 362 if (i & 1) 363 isr = isci_error_isr; 364 else 365 isr = isci_msix_isr; 366 367 err = devm_request_irq(&pdev->dev, pci_irq_vector(pdev, i), 368 isr, 0, DRV_NAME"-msix", ihost); 369 if (!err) 370 continue; 371 372 dev_info(&pdev->dev, "msix setup failed falling back to intx\n"); 373 while (i--) { 374 id = i / SCI_NUM_MSI_X_INT; 375 ihost = pci_info->hosts[id]; 376 devm_free_irq(&pdev->dev, pci_irq_vector(pdev, i), 377 ihost); 378 } 379 pci_free_irq_vectors(pdev); 380 goto intx; 381 } 382 return 0; 383 384 intx: 385 for_each_isci_host(i, ihost, pdev) { 386 err = devm_request_irq(&pdev->dev, pci_irq_vector(pdev, 0), 387 isci_intx_isr, IRQF_SHARED, DRV_NAME"-intx", 388 ihost); 389 if (err) 390 break; 391 } 392 return err; 393 } 394 395 static void isci_user_parameters_get(struct sci_user_parameters *u) 396 { 397 int i; 398 399 for (i = 0; i < SCI_MAX_PHYS; i++) { 400 struct sci_phy_user_params *u_phy = &u->phys[i]; 401 402 u_phy->max_speed_generation = phy_gen; 403 404 /* we are not exporting these for now */ 405 u_phy->align_insertion_frequency = 0x7f; 406 u_phy->in_connection_align_insertion_frequency = 0xff; 407 u_phy->notify_enable_spin_up_insertion_frequency = 0x33; 408 } 409 410 u->stp_inactivity_timeout = stp_inactive_to; 411 u->ssp_inactivity_timeout = ssp_inactive_to; 412 u->stp_max_occupancy_timeout = stp_max_occ_to; 413 u->ssp_max_occupancy_timeout = ssp_max_occ_to; 414 u->no_outbound_task_timeout = no_outbound_task_to; 415 u->max_concurr_spinup = max_concurr_spinup; 416 } 417 418 static enum sci_status sci_user_parameters_set(struct isci_host *ihost, 419 struct sci_user_parameters *sci_parms) 420 { 421 u16 index; 422 423 /* 424 * Validate the user parameters. If they are not legal, then 425 * return a failure. 426 */ 427 for (index = 0; index < SCI_MAX_PHYS; index++) { 428 struct sci_phy_user_params *u; 429 430 u = &sci_parms->phys[index]; 431 432 if (!((u->max_speed_generation <= SCIC_SDS_PARM_MAX_SPEED) && 433 (u->max_speed_generation > SCIC_SDS_PARM_NO_SPEED))) 434 return SCI_FAILURE_INVALID_PARAMETER_VALUE; 435 436 if (u->in_connection_align_insertion_frequency < 3) 437 return SCI_FAILURE_INVALID_PARAMETER_VALUE; 438 439 if ((u->in_connection_align_insertion_frequency < 3) || 440 (u->align_insertion_frequency == 0) || 441 (u->notify_enable_spin_up_insertion_frequency == 0)) 442 return SCI_FAILURE_INVALID_PARAMETER_VALUE; 443 } 444 445 if ((sci_parms->stp_inactivity_timeout == 0) || 446 (sci_parms->ssp_inactivity_timeout == 0) || 447 (sci_parms->stp_max_occupancy_timeout == 0) || 448 (sci_parms->ssp_max_occupancy_timeout == 0) || 449 (sci_parms->no_outbound_task_timeout == 0)) 450 return SCI_FAILURE_INVALID_PARAMETER_VALUE; 451 452 memcpy(&ihost->user_parameters, sci_parms, sizeof(*sci_parms)); 453 454 return SCI_SUCCESS; 455 } 456 457 static void sci_oem_defaults(struct isci_host *ihost) 458 { 459 /* these defaults are overridden by the platform / firmware */ 460 struct sci_user_parameters *user = &ihost->user_parameters; 461 struct sci_oem_params *oem = &ihost->oem_parameters; 462 int i; 463 464 /* Default to APC mode. */ 465 oem->controller.mode_type = SCIC_PORT_AUTOMATIC_CONFIGURATION_MODE; 466 467 /* Default to APC mode. */ 468 oem->controller.max_concurr_spin_up = 1; 469 470 /* Default to no SSC operation. */ 471 oem->controller.do_enable_ssc = false; 472 473 /* Default to short cables on all phys. */ 474 oem->controller.cable_selection_mask = 0; 475 476 /* Initialize all of the port parameter information to narrow ports. */ 477 for (i = 0; i < SCI_MAX_PORTS; i++) 478 oem->ports[i].phy_mask = 0; 479 480 /* Initialize all of the phy parameter information. */ 481 for (i = 0; i < SCI_MAX_PHYS; i++) { 482 /* Default to 3G (i.e. Gen 2). */ 483 user->phys[i].max_speed_generation = SCIC_SDS_PARM_GEN2_SPEED; 484 485 /* the frequencies cannot be 0 */ 486 user->phys[i].align_insertion_frequency = 0x7f; 487 user->phys[i].in_connection_align_insertion_frequency = 0xff; 488 user->phys[i].notify_enable_spin_up_insertion_frequency = 0x33; 489 490 /* Previous Vitesse based expanders had a arbitration issue that 491 * is worked around by having the upper 32-bits of SAS address 492 * with a value greater then the Vitesse company identifier. 493 * Hence, usage of 0x5FCFFFFF. 494 */ 495 oem->phys[i].sas_address.low = 0x1 + ihost->id; 496 oem->phys[i].sas_address.high = 0x5FCFFFFF; 497 } 498 499 user->stp_inactivity_timeout = 5; 500 user->ssp_inactivity_timeout = 5; 501 user->stp_max_occupancy_timeout = 5; 502 user->ssp_max_occupancy_timeout = 20; 503 user->no_outbound_task_timeout = 2; 504 } 505 506 static struct isci_host *isci_host_alloc(struct pci_dev *pdev, int id) 507 { 508 struct isci_orom *orom = to_pci_info(pdev)->orom; 509 struct sci_user_parameters sci_user_params; 510 u8 oem_version = ISCI_ROM_VER_1_0; 511 struct isci_host *ihost; 512 struct Scsi_Host *shost; 513 int err, i; 514 515 ihost = devm_kzalloc(&pdev->dev, sizeof(*ihost), GFP_KERNEL); 516 if (!ihost) 517 return NULL; 518 519 ihost->pdev = pdev; 520 ihost->id = id; 521 spin_lock_init(&ihost->scic_lock); 522 init_waitqueue_head(&ihost->eventq); 523 ihost->sas_ha.dev = &ihost->pdev->dev; 524 ihost->sas_ha.lldd_ha = ihost; 525 tasklet_init(&ihost->completion_tasklet, 526 isci_host_completion_routine, (unsigned long)ihost); 527 528 /* validate module parameters */ 529 /* TODO: kill struct sci_user_parameters and reference directly */ 530 sci_oem_defaults(ihost); 531 isci_user_parameters_get(&sci_user_params); 532 if (sci_user_parameters_set(ihost, &sci_user_params)) { 533 dev_warn(&pdev->dev, 534 "%s: sci_user_parameters_set failed\n", __func__); 535 return NULL; 536 } 537 538 /* sanity check platform (or 'firmware') oem parameters */ 539 if (orom) { 540 if (id < 0 || id >= SCI_MAX_CONTROLLERS || id > orom->hdr.num_elements) { 541 dev_warn(&pdev->dev, "parsing firmware oem parameters failed\n"); 542 return NULL; 543 } 544 ihost->oem_parameters = orom->ctrl[id]; 545 oem_version = orom->hdr.version; 546 } 547 548 /* validate oem parameters (platform, firmware, or built-in defaults) */ 549 if (sci_oem_parameters_validate(&ihost->oem_parameters, oem_version)) { 550 dev_warn(&pdev->dev, "oem parameter validation failed\n"); 551 return NULL; 552 } 553 554 for (i = 0; i < SCI_MAX_PORTS; i++) { 555 struct isci_port *iport = &ihost->ports[i]; 556 557 INIT_LIST_HEAD(&iport->remote_dev_list); 558 iport->isci_host = ihost; 559 } 560 561 for (i = 0; i < SCI_MAX_PHYS; i++) 562 isci_phy_init(&ihost->phys[i], ihost, i); 563 564 for (i = 0; i < SCI_MAX_REMOTE_DEVICES; i++) { 565 struct isci_remote_device *idev = &ihost->devices[i]; 566 567 INIT_LIST_HEAD(&idev->node); 568 } 569 570 shost = scsi_host_alloc(&isci_sht, sizeof(void *)); 571 if (!shost) 572 return NULL; 573 574 dev_info(&pdev->dev, "%sSCU controller %d: phy 3-0 cables: " 575 "{%s, %s, %s, %s}\n", 576 (is_cable_select_overridden() ? "* " : ""), ihost->id, 577 lookup_cable_names(decode_cable_selection(ihost, 3)), 578 lookup_cable_names(decode_cable_selection(ihost, 2)), 579 lookup_cable_names(decode_cable_selection(ihost, 1)), 580 lookup_cable_names(decode_cable_selection(ihost, 0))); 581 582 err = isci_host_init(ihost); 583 if (err) 584 goto err_shost; 585 586 SHOST_TO_SAS_HA(shost) = &ihost->sas_ha; 587 ihost->sas_ha.core.shost = shost; 588 shost->transportt = isci_transport_template; 589 590 shost->max_id = ~0; 591 shost->max_lun = ~0; 592 shost->max_cmd_len = MAX_COMMAND_SIZE; 593 594 err = scsi_add_host(shost, &pdev->dev); 595 if (err) 596 goto err_shost; 597 598 err = isci_register_sas_ha(ihost); 599 if (err) 600 goto err_shost_remove; 601 602 return ihost; 603 604 err_shost_remove: 605 scsi_remove_host(shost); 606 err_shost: 607 scsi_host_put(shost); 608 609 return NULL; 610 } 611 612 static int isci_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) 613 { 614 struct isci_pci_info *pci_info; 615 int err, i; 616 struct isci_host *isci_host; 617 const struct firmware *fw = NULL; 618 struct isci_orom *orom = NULL; 619 char *source = "(platform)"; 620 621 dev_info(&pdev->dev, "driver configured for rev: %d silicon\n", 622 pdev->revision); 623 624 pci_info = devm_kzalloc(&pdev->dev, sizeof(*pci_info), GFP_KERNEL); 625 if (!pci_info) 626 return -ENOMEM; 627 pci_set_drvdata(pdev, pci_info); 628 629 if (efi_enabled(EFI_RUNTIME_SERVICES)) 630 orom = isci_get_efi_var(pdev); 631 632 if (!orom) 633 orom = isci_request_oprom(pdev); 634 635 for (i = 0; orom && i < num_controllers(pdev); i++) { 636 if (sci_oem_parameters_validate(&orom->ctrl[i], 637 orom->hdr.version)) { 638 dev_warn(&pdev->dev, 639 "[%d]: invalid oem parameters detected, falling back to firmware\n", i); 640 orom = NULL; 641 break; 642 } 643 } 644 645 if (!orom) { 646 source = "(firmware)"; 647 orom = isci_request_firmware(pdev, fw); 648 if (!orom) { 649 /* TODO convert this to WARN_TAINT_ONCE once the 650 * orom/efi parameter support is widely available 651 */ 652 dev_warn(&pdev->dev, 653 "Loading user firmware failed, using default " 654 "values\n"); 655 dev_warn(&pdev->dev, 656 "Default OEM configuration being used: 4 " 657 "narrow ports, and default SAS Addresses\n"); 658 } 659 } 660 661 if (orom) 662 dev_info(&pdev->dev, 663 "OEM SAS parameters (version: %u.%u) loaded %s\n", 664 (orom->hdr.version & 0xf0) >> 4, 665 (orom->hdr.version & 0xf), source); 666 667 pci_info->orom = orom; 668 669 err = isci_pci_init(pdev); 670 if (err) 671 return err; 672 673 for (i = 0; i < num_controllers(pdev); i++) { 674 struct isci_host *h = isci_host_alloc(pdev, i); 675 676 if (!h) { 677 err = -ENOMEM; 678 goto err_host_alloc; 679 } 680 pci_info->hosts[i] = h; 681 682 /* turn on DIF support */ 683 scsi_host_set_prot(to_shost(h), 684 SHOST_DIF_TYPE1_PROTECTION | 685 SHOST_DIF_TYPE2_PROTECTION | 686 SHOST_DIF_TYPE3_PROTECTION); 687 scsi_host_set_guard(to_shost(h), SHOST_DIX_GUARD_CRC); 688 } 689 690 err = isci_setup_interrupts(pdev); 691 if (err) 692 goto err_host_alloc; 693 694 for_each_isci_host(i, isci_host, pdev) 695 scsi_scan_host(to_shost(isci_host)); 696 697 return 0; 698 699 err_host_alloc: 700 for_each_isci_host(i, isci_host, pdev) 701 isci_unregister(isci_host); 702 return err; 703 } 704 705 static void isci_pci_remove(struct pci_dev *pdev) 706 { 707 struct isci_host *ihost; 708 int i; 709 710 for_each_isci_host(i, ihost, pdev) { 711 wait_for_start(ihost); 712 isci_unregister(ihost); 713 isci_host_deinit(ihost); 714 } 715 } 716 717 #ifdef CONFIG_PM_SLEEP 718 static int isci_suspend(struct device *dev) 719 { 720 struct pci_dev *pdev = to_pci_dev(dev); 721 struct isci_host *ihost; 722 int i; 723 724 for_each_isci_host(i, ihost, pdev) { 725 sas_suspend_ha(&ihost->sas_ha); 726 isci_host_deinit(ihost); 727 } 728 729 pci_save_state(pdev); 730 pci_disable_device(pdev); 731 pci_set_power_state(pdev, PCI_D3hot); 732 733 return 0; 734 } 735 736 static int isci_resume(struct device *dev) 737 { 738 struct pci_dev *pdev = to_pci_dev(dev); 739 struct isci_host *ihost; 740 int rc, i; 741 742 pci_set_power_state(pdev, PCI_D0); 743 pci_restore_state(pdev); 744 745 rc = pcim_enable_device(pdev); 746 if (rc) { 747 dev_err(&pdev->dev, 748 "enabling device failure after resume(%d)\n", rc); 749 return rc; 750 } 751 752 pci_set_master(pdev); 753 754 for_each_isci_host(i, ihost, pdev) { 755 sas_prep_resume_ha(&ihost->sas_ha); 756 757 isci_host_init(ihost); 758 isci_host_start(ihost->sas_ha.core.shost); 759 wait_for_start(ihost); 760 761 sas_resume_ha(&ihost->sas_ha); 762 } 763 764 return 0; 765 } 766 #endif 767 768 static SIMPLE_DEV_PM_OPS(isci_pm_ops, isci_suspend, isci_resume); 769 770 static struct pci_driver isci_pci_driver = { 771 .name = DRV_NAME, 772 .id_table = isci_id_table, 773 .probe = isci_pci_probe, 774 .remove = isci_pci_remove, 775 .driver.pm = &isci_pm_ops, 776 }; 777 778 static __init int isci_init(void) 779 { 780 int err; 781 782 pr_info("%s: Intel(R) C600 SAS Controller Driver - version %s\n", 783 DRV_NAME, DRV_VERSION); 784 785 isci_transport_template = sas_domain_attach_transport(&isci_transport_ops); 786 if (!isci_transport_template) 787 return -ENOMEM; 788 789 err = pci_register_driver(&isci_pci_driver); 790 if (err) 791 sas_release_transport(isci_transport_template); 792 793 return err; 794 } 795 796 static __exit void isci_exit(void) 797 { 798 pci_unregister_driver(&isci_pci_driver); 799 sas_release_transport(isci_transport_template); 800 } 801 802 MODULE_LICENSE("Dual BSD/GPL"); 803 MODULE_FIRMWARE(ISCI_FW_NAME); 804 module_init(isci_init); 805 module_exit(isci_exit); 806