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6f231dda
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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 <asm/string.h>
60#include "isci.h"
61#include "task.h"
62#include "sci_controller_constants.h"
63#include "scic_remote_device.h"
64#include "sci_environment.h"
65
66static struct scsi_transport_template *isci_transport_template;
6f231dda
DW
67
68static DEFINE_PCI_DEVICE_TABLE(isci_id_table) = {
69 { PCI_VDEVICE(INTEL, 0x1D61),},
70 { PCI_VDEVICE(INTEL, 0x1D63),},
71 { PCI_VDEVICE(INTEL, 0x1D65),},
72 { PCI_VDEVICE(INTEL, 0x1D67),},
73 { PCI_VDEVICE(INTEL, 0x1D69),},
74 { PCI_VDEVICE(INTEL, 0x1D6B),},
75 { PCI_VDEVICE(INTEL, 0x1D60),},
76 { PCI_VDEVICE(INTEL, 0x1D62),},
77 { PCI_VDEVICE(INTEL, 0x1D64),},
78 { PCI_VDEVICE(INTEL, 0x1D66),},
79 { PCI_VDEVICE(INTEL, 0x1D68),},
80 { PCI_VDEVICE(INTEL, 0x1D6A),},
81 {}
82};
83
858d4aa7
DJ
84struct isci_firmware *isci_firmware;
85
6f231dda
DW
86static int __devinit isci_pci_probe(
87 struct pci_dev *pdev,
88 const struct pci_device_id *device_id_p);
89
90static void __devexit isci_pci_remove(struct pci_dev *pdev);
91
92MODULE_DEVICE_TABLE(pci, isci_id_table);
93
94static struct pci_driver isci_pci_driver = {
95 .name = DRV_NAME,
96 .id_table = isci_id_table,
97 .probe = isci_pci_probe,
98 .remove = __devexit_p(isci_pci_remove),
99};
100
101/* linux isci specific settings */
6f231dda
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102
103#if defined(CONFIG_PBG_HBA_A0)
104int isci_si_rev = ISCI_SI_REVA0;
105#elif defined(CONFIG_PBG_HBA_A2)
106int isci_si_rev = ISCI_SI_REVA2;
107#else
108int isci_si_rev = ISCI_SI_REVB0;
109#endif
110module_param(isci_si_rev, int, S_IRUGO | S_IWUSR);
111MODULE_PARM_DESC(isci_si_rev, "override default si rev (0: A0 1: A2 2: B0)");
112
113static struct scsi_host_template isci_sht = {
114
115 .module = THIS_MODULE,
116 .name = DRV_NAME,
92cd5115 117 .proc_name = DRV_NAME,
6f231dda
DW
118 .queuecommand = sas_queuecommand,
119 .target_alloc = sas_target_alloc,
120 .slave_configure = sas_slave_configure,
121 .slave_destroy = sas_slave_destroy,
122 .scan_finished = isci_host_scan_finished,
123 .scan_start = isci_host_scan_start,
124 .change_queue_depth = sas_change_queue_depth,
125 .change_queue_type = sas_change_queue_type,
126 .bios_param = sas_bios_param,
127 .can_queue = ISCI_CAN_QUEUE_VAL,
128 .cmd_per_lun = 1,
129 .this_id = -1,
130 .sg_tablesize = SG_ALL,
131 .max_sectors = SCSI_DEFAULT_MAX_SECTORS,
132 .use_clustering = ENABLE_CLUSTERING,
133 .eh_device_reset_handler = sas_eh_device_reset_handler,
134 .eh_bus_reset_handler = isci_bus_reset_handler,
135 .slave_alloc = sas_slave_alloc,
136 .target_destroy = sas_target_destroy,
137 .ioctl = sas_ioctl,
138};
139
140static struct sas_domain_function_template isci_transport_ops = {
141
142 /* The class calls these to notify the LLDD of an event. */
143 .lldd_port_formed = isci_port_formed,
144 .lldd_port_deformed = isci_port_deformed,
145
146 /* The class calls these when a device is found or gone. */
147 .lldd_dev_found = isci_remote_device_found,
148 .lldd_dev_gone = isci_remote_device_gone,
149
150 .lldd_execute_task = isci_task_execute_task,
151 /* Task Management Functions. Must be called from process context. */
152 .lldd_abort_task = isci_task_abort_task,
153 .lldd_abort_task_set = isci_task_abort_task_set,
154 .lldd_clear_aca = isci_task_clear_aca,
155 .lldd_clear_task_set = isci_task_clear_task_set,
156 .lldd_I_T_nexus_reset = isci_task_I_T_nexus_reset,
157 .lldd_lu_reset = isci_task_lu_reset,
158 .lldd_query_task = isci_task_query_task,
159
160 /* Port and Adapter management */
161 .lldd_clear_nexus_port = isci_task_clear_nexus_port,
162 .lldd_clear_nexus_ha = isci_task_clear_nexus_ha,
163
164 /* Phy management */
165 .lldd_control_phy = isci_phy_control,
166};
167
168
169/******************************************************************************
170* P R O T E C T E D M E T H O D S
171******************************************************************************/
172
173
174
175/**
176 * isci_register_sas_ha() - This method initializes various lldd
177 * specific members of the sas_ha struct and calls the libsas
178 * sas_register_ha() function.
179 * @isci_host: This parameter specifies the lldd specific wrapper for the
180 * libsas sas_ha struct.
181 *
182 * This method returns an error code indicating sucess or failure. The user
183 * should check for possible memory allocation error return otherwise, a zero
184 * indicates success.
185 */
186static int isci_register_sas_ha(struct isci_host *isci_host)
187{
188 int i;
189 struct sas_ha_struct *sas_ha = &(isci_host->sas_ha);
190 struct asd_sas_phy **sas_phys;
191 struct asd_sas_port **sas_ports;
192
193 sas_phys = devm_kzalloc(&isci_host->pdev->dev,
194 SCI_MAX_PHYS * sizeof(void *),
195 GFP_KERNEL);
196 if (!sas_phys)
197 return -ENOMEM;
198
199 sas_ports = devm_kzalloc(&isci_host->pdev->dev,
200 SCI_MAX_PORTS * sizeof(void *),
201 GFP_KERNEL);
202 if (!sas_ports)
203 return -ENOMEM;
204
205 /*----------------- Libsas Initialization Stuff----------------------
206 * Set various fields in the sas_ha struct:
207 */
208
209 sas_ha->sas_ha_name = DRV_NAME;
210 sas_ha->lldd_module = THIS_MODULE;
150fc6fc 211 sas_ha->sas_addr = &isci_host->phys[0].sas_addr[0];
6f231dda
DW
212
213 /* set the array of phy and port structs. */
214 for (i = 0; i < SCI_MAX_PHYS; i++) {
215 sas_phys[i] = &(isci_host->phys[i].sas_phy);
216 sas_ports[i] = &(isci_host->sas_ports[i]);
217 }
218
219 sas_ha->sas_phy = sas_phys;
220 sas_ha->sas_port = sas_ports;
221 sas_ha->num_phys = SCI_MAX_PHYS;
222
223 sas_ha->lldd_queue_size = ISCI_CAN_QUEUE_VAL;
224 sas_ha->lldd_max_execute_num = 1;
225 sas_ha->strict_wide_ports = 1;
226
227 sas_register_ha(sas_ha);
228
229 return 0;
230}
231
34cad85d 232static ssize_t isci_show_id(struct device *dev, struct device_attribute *attr, char *buf)
6f231dda 233{
34cad85d
DW
234 struct Scsi_Host *shost = container_of(dev, typeof(*shost), shost_dev);
235 struct sas_ha_struct *sas_ha = SHOST_TO_SAS_HA(shost);
236 struct isci_host *ihost = container_of(sas_ha, typeof(*ihost), sas_ha);
237
238 return snprintf(buf, PAGE_SIZE, "%d\n", ihost->id);
239}
240
241static DEVICE_ATTR(isci_id, S_IRUGO, isci_show_id, NULL);
242
243static void isci_unregister(struct isci_host *isci_host)
244{
245 struct Scsi_Host *shost;
246
6f231dda
DW
247 if (!isci_host)
248 return;
249
34cad85d
DW
250 shost = isci_host->shost;
251 device_remove_file(&shost->shost_dev, &dev_attr_isci_id);
252
253 sas_unregister_ha(&isci_host->sas_ha);
6f231dda
DW
254
255 sas_remove_host(isci_host->shost);
256 scsi_remove_host(isci_host->shost);
257 scsi_host_put(isci_host->shost);
258}
259
260static int __devinit isci_pci_init(struct pci_dev *pdev)
261{
262 int err, bar_num, bar_mask;
263 void __iomem * const *iomap;
264
265 err = pcim_enable_device(pdev);
266 if (err) {
267 dev_err(&pdev->dev,
268 "failed enable PCI device %s!\n",
269 pci_name(pdev));
270 return err;
271 }
272
273 for (bar_num = 0; bar_num < SCI_PCI_BAR_COUNT; bar_num++)
274 bar_mask |= 1 << (bar_num * 2);
275
276 err = pcim_iomap_regions(pdev, bar_mask, DRV_NAME);
277 if (err)
278 return err;
279
280 iomap = pcim_iomap_table(pdev);
281 if (!iomap)
282 return -ENOMEM;
283
284 pci_set_master(pdev);
285
286 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
287 if (err) {
288 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
289 if (err)
290 return err;
291 }
292
293 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
294 if (err) {
295 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
296 if (err)
297 return err;
298 }
299
300 return 0;
301}
302
6f231dda
DW
303static int num_controllers(struct pci_dev *pdev)
304{
305 /* bar size alone can tell us if we are running with a dual controller
306 * part, no need to trust revision ids that might be under broken firmware
307 * control
308 */
309 resource_size_t scu_bar_size = pci_resource_len(pdev, SCI_SCU_BAR*2);
310 resource_size_t smu_bar_size = pci_resource_len(pdev, SCI_SMU_BAR*2);
311
312 if (scu_bar_size >= SCI_SCU_BAR_SIZE*SCI_MAX_CONTROLLERS &&
313 smu_bar_size >= SCI_SMU_BAR_SIZE*SCI_MAX_CONTROLLERS)
314 return SCI_MAX_CONTROLLERS;
315 else
316 return 1;
317}
318
319static int isci_setup_interrupts(struct pci_dev *pdev)
320{
321 int err, i, num_msix;
322 struct isci_pci_info *pci_info = to_pci_info(pdev);
323
324 /*
325 * Determine the number of vectors associated with this
326 * PCI function.
327 */
328 num_msix = num_controllers(pdev) * SCI_NUM_MSI_X_INT;
329
330 for (i = 0; i < num_msix; i++)
331 pci_info->msix_entries[i].entry = i;
332
333 err = pci_enable_msix(pdev, pci_info->msix_entries, num_msix);
334 if (err)
335 goto intx;
336
337 for (i = 0; i < num_msix; i++) {
338 int id = i / SCI_NUM_MSI_X_INT;
339 struct msix_entry *msix = &pci_info->msix_entries[i];
b329aff1 340 struct isci_host *isci_host = pci_info->hosts[id];
92f4f0f5
DW
341 irq_handler_t isr;
342
343 /* odd numbered vectors are error interrupts */
344 if (i & 1)
345 isr = isci_error_isr;
346 else
347 isr = isci_msix_isr;
6f231dda
DW
348
349 BUG_ON(!isci_host);
350
92f4f0f5 351 err = devm_request_irq(&pdev->dev, msix->vector, isr, 0,
6f231dda
DW
352 DRV_NAME"-msix", isci_host);
353 if (!err)
354 continue;
355
356 dev_info(&pdev->dev, "msix setup failed falling back to intx\n");
357 while (i--) {
358 id = i / SCI_NUM_MSI_X_INT;
b329aff1 359 isci_host = pci_info->hosts[id];
6f231dda
DW
360 msix = &pci_info->msix_entries[i];
361 devm_free_irq(&pdev->dev, msix->vector, isci_host);
362 }
363 pci_disable_msix(pdev);
364 goto intx;
365 }
366
367 return 0;
368
369 intx:
c7ef4031 370 err = devm_request_irq(&pdev->dev, pdev->irq, isci_intx_isr,
6f231dda
DW
371 IRQF_SHARED, DRV_NAME"-intx", pdev);
372
373 return err;
374}
375
376/**
377 * isci_parse_oem_parameters() - This method will take OEM parameters
378 * from the module init parameters and copy them to oem_params. This will
379 * only copy values that are not set to the module parameter default values
380 * @oem_parameters: This parameter specifies the controller default OEM
381 * parameters. It is expected that this has been initialized to the default
382 * parameters for the controller
383 *
384 *
385 */
386enum sci_status isci_parse_oem_parameters(union scic_oem_parameters *oem_params,
387 int scu_index,
388 struct isci_firmware *fw)
389{
390 int i;
391
392 /* check for valid inputs */
393 if (!(scu_index >= 0
394 && scu_index < SCI_MAX_CONTROLLERS
395 && oem_params != NULL)) {
396 return SCI_FAILURE;
397 }
398
399 for (i = 0; i < SCI_MAX_PHYS; i++) {
400 int array_idx = i + (SCI_MAX_PHYS * scu_index);
401 u64 sas_addr = fw->sas_addrs[array_idx];
402
403 if (sas_addr != 0) {
404 oem_params->sds1.phys[i].sas_address.low =
405 (u32)(sas_addr & 0xffffffff);
406 oem_params->sds1.phys[i].sas_address.high =
407 (u32)((sas_addr >> 32) & 0xffffffff);
408 }
409 }
410
411 for (i = 0; i < SCI_MAX_PORTS; i++) {
412 int array_idx = i + (SCI_MAX_PORTS * scu_index);
413 u32 pmask = fw->phy_masks[array_idx];
414
415 oem_params->sds1.ports[i].phy_mask = pmask;
416 }
417
418 return SCI_SUCCESS;
419}
420
421/**
422 * isci_parse_user_parameters() - This method will take user parameters
423 * from the module init parameters and copy them to user_params. This will
424 * only copy values that are not set to the module parameter default values
425 * @user_parameters: This parameter specifies the controller default user
426 * parameters. It is expected that this has been initialized to the default
427 * parameters for the controller
428 *
429 *
430 */
431enum sci_status isci_parse_user_parameters(
432 union scic_user_parameters *user_params,
433 int scu_index,
434 struct isci_firmware *fw)
435{
436 int i;
437
438 if (!(scu_index >= 0
439 && scu_index < SCI_MAX_CONTROLLERS
440 && user_params != NULL)) {
441 return SCI_FAILURE;
442 }
443
444 for (i = 0; i < SCI_MAX_PORTS; i++) {
445 int array_idx = i + (SCI_MAX_PORTS * scu_index);
446 u32 gen = fw->phy_gens[array_idx];
447
448 user_params->sds1.phys[i].max_speed_generation = gen;
449
450 }
451
452 return SCI_SUCCESS;
453}
454
455static struct isci_host *isci_host_alloc(struct pci_dev *pdev, int id)
456{
457 struct isci_host *isci_host;
458 struct Scsi_Host *shost;
459 int err;
460
d9c37390
DW
461 isci_host = devm_kzalloc(&pdev->dev, sizeof(*isci_host) +
462 SCI_MAX_REMOTE_DEVICES *
463 (sizeof(struct isci_remote_device) +
464 scic_remote_device_get_object_size()), GFP_KERNEL);
6f231dda
DW
465 if (!isci_host)
466 return NULL;
467
468 isci_host->pdev = pdev;
469 isci_host->id = id;
470
471 shost = scsi_host_alloc(&isci_sht, sizeof(void *));
472 if (!shost)
473 return NULL;
474 isci_host->shost = shost;
475
476 err = isci_host_init(isci_host);
477 if (err)
478 goto err_shost;
479
480 SHOST_TO_SAS_HA(shost) = &isci_host->sas_ha;
481 isci_host->sas_ha.core.shost = shost;
482 shost->transportt = isci_transport_template;
483
484 shost->max_id = ~0;
485 shost->max_lun = ~0;
486 shost->max_cmd_len = MAX_COMMAND_SIZE;
487
488 err = scsi_add_host(shost, &pdev->dev);
489 if (err)
490 goto err_shost;
491
492 err = isci_register_sas_ha(isci_host);
493 if (err)
494 goto err_shost_remove;
495
34cad85d
DW
496 err = device_create_file(&shost->shost_dev, &dev_attr_isci_id);
497 if (err)
498 goto err_unregister_ha;
499
6f231dda
DW
500 return isci_host;
501
34cad85d
DW
502 err_unregister_ha:
503 sas_unregister_ha(&(isci_host->sas_ha));
6f231dda
DW
504 err_shost_remove:
505 scsi_remove_host(shost);
506 err_shost:
507 scsi_host_put(shost);
508
509 return NULL;
510}
511
512static void check_si_rev(struct pci_dev *pdev)
513{
514 if (num_controllers(pdev) > 1)
515 isci_si_rev = ISCI_SI_REVB0;
516 else {
517 switch (pdev->revision) {
518 case 0:
519 case 1:
520 /* if the id is ambiguous don't update isci_si_rev */
521 break;
522 case 3:
523 isci_si_rev = ISCI_SI_REVA2;
524 break;
525 default:
526 case 4:
527 isci_si_rev = ISCI_SI_REVB0;
528 break;
529 }
530 }
531
532 dev_info(&pdev->dev, "driver configured for %s silicon (rev: %d)\n",
533 isci_si_rev == ISCI_SI_REVA0 ? "A0" :
534 isci_si_rev == ISCI_SI_REVA2 ? "A2" : "B0", pdev->revision);
535
536}
537
858d4aa7
DJ
538static int isci_verify_firmware(const struct firmware *fw,
539 struct isci_firmware *isci_fw)
540{
541 const u8 *tmp;
542
543 if (fw->size < ISCI_FIRMWARE_MIN_SIZE)
544 return -EINVAL;
545
546 tmp = fw->data;
547
548 /* 12th char should be the NULL terminate for the ID string */
549 if (tmp[11] != '\0')
550 return -EINVAL;
551
552 if (strncmp("#SCU MAGIC#", tmp, 11) != 0)
553 return -EINVAL;
554
555 isci_fw->id = tmp;
556 isci_fw->version = fw->data[ISCI_FW_VER_OFS];
557 isci_fw->subversion = fw->data[ISCI_FW_SUBVER_OFS];
558
559 tmp = fw->data + ISCI_FW_DATA_OFS;
560
561 while (*tmp != ISCI_FW_HDR_EOF) {
562 switch (*tmp) {
563 case ISCI_FW_HDR_PHYMASK:
564 tmp++;
565 isci_fw->phy_masks_size = *tmp;
566 tmp++;
567 isci_fw->phy_masks = (const u32 *)tmp;
568 tmp += sizeof(u32) * isci_fw->phy_masks_size;
569 break;
570
571 case ISCI_FW_HDR_PHYGEN:
572 tmp++;
573 isci_fw->phy_gens_size = *tmp;
574 tmp++;
575 isci_fw->phy_gens = (const u32 *)tmp;
576 tmp += sizeof(u32) * isci_fw->phy_gens_size;
577 break;
578
579 case ISCI_FW_HDR_SASADDR:
580 tmp++;
581 isci_fw->sas_addrs_size = *tmp;
582 tmp++;
583 isci_fw->sas_addrs = (const u64 *)tmp;
584 tmp += sizeof(u64) * isci_fw->sas_addrs_size;
585 break;
586
587 default:
588 pr_err("bad field in firmware binary blob\n");
589 return -EINVAL;
590 }
591 }
592
593 pr_info("isci firmware v%u.%u loaded.\n",
594 isci_fw->version, isci_fw->subversion);
595
596 return SCI_SUCCESS;
597}
598
6f231dda
DW
599static int __devinit isci_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
600{
601 struct isci_pci_info *pci_info;
602 int err, i;
603 struct isci_host *isci_host;
858d4aa7 604 const struct firmware *fw = NULL;
6f231dda
DW
605
606 check_si_rev(pdev);
607
608 pci_info = devm_kzalloc(&pdev->dev, sizeof(*pci_info), GFP_KERNEL);
609 if (!pci_info)
610 return -ENOMEM;
611 pci_set_drvdata(pdev, pci_info);
612
858d4aa7
DJ
613 err = request_firmware(&fw, ISCI_FW_NAME, &pdev->dev);
614 if (err) {
615 dev_warn(&pdev->dev,
616 "Loading firmware failed, using default values\n");
617 dev_warn(&pdev->dev,
618 "Default OEM configuration being used:"
619 " 4 narrow ports, and default SAS Addresses\n");
620 } else {
621 isci_firmware = devm_kzalloc(&pdev->dev,
622 sizeof(struct isci_firmware),
623 GFP_KERNEL);
624 if (isci_firmware) {
625 err = isci_verify_firmware(fw, isci_firmware);
626 if (err != SCI_SUCCESS) {
627 dev_warn(&pdev->dev,
628 "firmware verification failed\n");
629 dev_warn(&pdev->dev,
630 "Default OEM configuration being used:"
631 " 4 narrow ports, and default SAS "
632 "Addresses\n");
633 devm_kfree(&pdev->dev, isci_firmware);
634 isci_firmware = NULL;
635 }
636 }
637 release_firmware(fw);
638 }
639
6f231dda
DW
640 err = isci_pci_init(pdev);
641 if (err)
642 return err;
643
644 for (i = 0; i < num_controllers(pdev); i++) {
645 struct isci_host *h = isci_host_alloc(pdev, i);
646
647 if (!h) {
648 err = -ENOMEM;
649 goto err_host_alloc;
650 }
b329aff1 651 pci_info->hosts[i] = h;
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652 }
653
654 err = isci_setup_interrupts(pdev);
655 if (err)
656 goto err_host_alloc;
657
b329aff1 658 for_each_isci_host(i, isci_host, pdev)
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659 scsi_scan_host(isci_host->shost);
660
661 return 0;
662
663 err_host_alloc:
b329aff1 664 for_each_isci_host(i, isci_host, pdev)
34cad85d 665 isci_unregister(isci_host);
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666 return err;
667}
668
669static void __devexit isci_pci_remove(struct pci_dev *pdev)
670{
671 struct isci_host *isci_host;
b329aff1 672 int i;
6f231dda 673
b329aff1 674 for_each_isci_host(i, isci_host, pdev) {
34cad85d 675 isci_unregister(isci_host);
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676 isci_host_deinit(isci_host);
677 scic_controller_disable_interrupts(isci_host->core_controller);
678 }
679}
680
681static __init int isci_init(void)
682{
d9c37390 683 int err;
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684
685 pr_info("%s: Intel(R) C600 SAS Controller Driver\n", DRV_NAME);
686
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687 isci_transport_template = sas_domain_attach_transport(&isci_transport_ops);
688 if (!isci_transport_template)
d9c37390 689 return -ENOMEM;
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690
691 err = pci_register_driver(&isci_pci_driver);
692 if (err)
d9c37390 693 sas_release_transport(isci_transport_template);
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694
695 return err;
696}
697
698static __exit void isci_exit(void)
699{
700 pci_unregister_driver(&isci_pci_driver);
701 sas_release_transport(isci_transport_template);
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702}
703
704MODULE_LICENSE("Dual BSD/GPL");
705MODULE_FIRMWARE(ISCI_FW_NAME);
706module_init(isci_init);
707module_exit(isci_exit);