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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 <linux/firmware.h>
60#include <linux/efi.h>
61#include <asm/string.h>
62#include <scsi/scsi_host.h>
63#include "isci.h"
64#include "task.h"
65#include "probe_roms.h"
66
67#define MAJ 1
68#define MIN 0
69#define BUILD 0
70#define DRV_VERSION __stringify(MAJ) "." __stringify(MIN) "." \
71 __stringify(BUILD)
72
73MODULE_VERSION(DRV_VERSION);
74
75static struct scsi_transport_template *isci_transport_template;
76
77static DEFINE_PCI_DEVICE_TABLE(isci_id_table) = {
78 { PCI_VDEVICE(INTEL, 0x1D61),},
79 { PCI_VDEVICE(INTEL, 0x1D63),},
80 { PCI_VDEVICE(INTEL, 0x1D65),},
81 { PCI_VDEVICE(INTEL, 0x1D67),},
82 { PCI_VDEVICE(INTEL, 0x1D69),},
83 { PCI_VDEVICE(INTEL, 0x1D6B),},
84 { PCI_VDEVICE(INTEL, 0x1D60),},
85 { PCI_VDEVICE(INTEL, 0x1D62),},
86 { PCI_VDEVICE(INTEL, 0x1D64),},
87 { PCI_VDEVICE(INTEL, 0x1D66),},
88 { PCI_VDEVICE(INTEL, 0x1D68),},
89 { PCI_VDEVICE(INTEL, 0x1D6A),},
90 {}
91};
92
93MODULE_DEVICE_TABLE(pci, isci_id_table);
94
95/* linux isci specific settings */
96
97unsigned char no_outbound_task_to = 20;
98module_param(no_outbound_task_to, byte, 0);
99MODULE_PARM_DESC(no_outbound_task_to, "No Outbound Task Timeout (1us incr)");
100
101u16 ssp_max_occ_to = 20;
102module_param(ssp_max_occ_to, ushort, 0);
103MODULE_PARM_DESC(ssp_max_occ_to, "SSP Max occupancy timeout (100us incr)");
104
105u16 stp_max_occ_to = 5;
106module_param(stp_max_occ_to, ushort, 0);
107MODULE_PARM_DESC(stp_max_occ_to, "STP Max occupancy timeout (100us incr)");
108
109u16 ssp_inactive_to = 5;
110module_param(ssp_inactive_to, ushort, 0);
111MODULE_PARM_DESC(ssp_inactive_to, "SSP inactivity timeout (100us incr)");
112
113u16 stp_inactive_to = 5;
114module_param(stp_inactive_to, ushort, 0);
115MODULE_PARM_DESC(stp_inactive_to, "STP inactivity timeout (100us incr)");
116
117unsigned char phy_gen = 3;
118module_param(phy_gen, byte, 0);
119MODULE_PARM_DESC(phy_gen, "PHY generation (1: 1.5Gbps 2: 3.0Gbps 3: 6.0Gbps)");
120
121unsigned char max_concurr_spinup = 1;
122module_param(max_concurr_spinup, byte, 0);
123MODULE_PARM_DESC(max_concurr_spinup, "Max concurrent device spinup");
124
125static ssize_t isci_show_id(struct device *dev, struct device_attribute *attr, char *buf)
126{
127 struct Scsi_Host *shost = container_of(dev, typeof(*shost), shost_dev);
128 struct sas_ha_struct *sas_ha = SHOST_TO_SAS_HA(shost);
129 struct isci_host *ihost = container_of(sas_ha, typeof(*ihost), sas_ha);
130
131 return snprintf(buf, PAGE_SIZE, "%d\n", ihost->id);
132}
133
134static DEVICE_ATTR(isci_id, S_IRUGO, isci_show_id, NULL);
135
136struct device_attribute *isci_host_attrs[] = {
137 &dev_attr_isci_id,
138 NULL
139};
140
141static struct scsi_host_template isci_sht = {
142
143 .module = THIS_MODULE,
144 .name = DRV_NAME,
145 .proc_name = DRV_NAME,
146 .queuecommand = sas_queuecommand,
147 .target_alloc = sas_target_alloc,
148 .slave_configure = sas_slave_configure,
149 .slave_destroy = sas_slave_destroy,
150 .scan_finished = isci_host_scan_finished,
151 .scan_start = isci_host_scan_start,
152 .change_queue_depth = sas_change_queue_depth,
153 .change_queue_type = sas_change_queue_type,
154 .bios_param = sas_bios_param,
155 .can_queue = ISCI_CAN_QUEUE_VAL,
156 .cmd_per_lun = 1,
157 .this_id = -1,
158 .sg_tablesize = SG_ALL,
159 .max_sectors = SCSI_DEFAULT_MAX_SECTORS,
160 .use_clustering = ENABLE_CLUSTERING,
161 .eh_device_reset_handler = sas_eh_device_reset_handler,
162 .eh_bus_reset_handler = isci_bus_reset_handler,
163 .slave_alloc = sas_slave_alloc,
164 .target_destroy = sas_target_destroy,
165 .ioctl = sas_ioctl,
166 .shost_attrs = isci_host_attrs,
167};
168
169static struct sas_domain_function_template isci_transport_ops = {
170
171 /* The class calls these to notify the LLDD of an event. */
172 .lldd_port_formed = isci_port_formed,
173 .lldd_port_deformed = isci_port_deformed,
174
175 /* The class calls these when a device is found or gone. */
176 .lldd_dev_found = isci_remote_device_found,
177 .lldd_dev_gone = isci_remote_device_gone,
178
179 .lldd_execute_task = isci_task_execute_task,
180 /* Task Management Functions. Must be called from process context. */
181 .lldd_abort_task = isci_task_abort_task,
182 .lldd_abort_task_set = isci_task_abort_task_set,
183 .lldd_clear_aca = isci_task_clear_aca,
184 .lldd_clear_task_set = isci_task_clear_task_set,
185 .lldd_I_T_nexus_reset = isci_task_I_T_nexus_reset,
186 .lldd_lu_reset = isci_task_lu_reset,
187 .lldd_query_task = isci_task_query_task,
188
189 /* Port and Adapter management */
190 .lldd_clear_nexus_port = isci_task_clear_nexus_port,
191 .lldd_clear_nexus_ha = isci_task_clear_nexus_ha,
192
193 /* Phy management */
194 .lldd_control_phy = isci_phy_control,
195};
196
197
198/******************************************************************************
199* P R O T E C T E D M E T H O D S
200******************************************************************************/
201
202
203
204/**
205 * isci_register_sas_ha() - This method initializes various lldd
206 * specific members of the sas_ha struct and calls the libsas
207 * sas_register_ha() function.
208 * @isci_host: This parameter specifies the lldd specific wrapper for the
209 * libsas sas_ha struct.
210 *
211 * This method returns an error code indicating sucess or failure. The user
212 * should check for possible memory allocation error return otherwise, a zero
213 * indicates success.
214 */
215static int isci_register_sas_ha(struct isci_host *isci_host)
216{
217 int i;
218 struct sas_ha_struct *sas_ha = &(isci_host->sas_ha);
219 struct asd_sas_phy **sas_phys;
220 struct asd_sas_port **sas_ports;
221
222 sas_phys = devm_kzalloc(&isci_host->pdev->dev,
223 SCI_MAX_PHYS * sizeof(void *),
224 GFP_KERNEL);
225 if (!sas_phys)
226 return -ENOMEM;
227
228 sas_ports = devm_kzalloc(&isci_host->pdev->dev,
229 SCI_MAX_PORTS * sizeof(void *),
230 GFP_KERNEL);
231 if (!sas_ports)
232 return -ENOMEM;
233
234 /*----------------- Libsas Initialization Stuff----------------------
235 * Set various fields in the sas_ha struct:
236 */
237
238 sas_ha->sas_ha_name = DRV_NAME;
239 sas_ha->lldd_module = THIS_MODULE;
240 sas_ha->sas_addr = &isci_host->phys[0].sas_addr[0];
241
242 /* set the array of phy and port structs. */
243 for (i = 0; i < SCI_MAX_PHYS; i++) {
244 sas_phys[i] = &isci_host->phys[i].sas_phy;
245 sas_ports[i] = &isci_host->ports[i].sas_port;
246 }
247
248 sas_ha->sas_phy = sas_phys;
249 sas_ha->sas_port = sas_ports;
250 sas_ha->num_phys = SCI_MAX_PHYS;
251
252 sas_ha->lldd_queue_size = ISCI_CAN_QUEUE_VAL;
253 sas_ha->lldd_max_execute_num = 1;
254 sas_ha->strict_wide_ports = 1;
255
256 sas_register_ha(sas_ha);
257
258 return 0;
259}
260
261static void isci_unregister(struct isci_host *isci_host)
262{
263 struct Scsi_Host *shost;
264
265 if (!isci_host)
266 return;
267
268 shost = isci_host->shost;
269
270 sas_unregister_ha(&isci_host->sas_ha);
271
272 sas_remove_host(isci_host->shost);
273 scsi_remove_host(isci_host->shost);
274 scsi_host_put(isci_host->shost);
275}
276
277static int __devinit isci_pci_init(struct pci_dev *pdev)
278{
279 int err, bar_num, bar_mask = 0;
280 void __iomem * const *iomap;
281
282 err = pcim_enable_device(pdev);
283 if (err) {
284 dev_err(&pdev->dev,
285 "failed enable PCI device %s!\n",
286 pci_name(pdev));
287 return err;
288 }
289
290 for (bar_num = 0; bar_num < SCI_PCI_BAR_COUNT; bar_num++)
291 bar_mask |= 1 << (bar_num * 2);
292
293 err = pcim_iomap_regions(pdev, bar_mask, DRV_NAME);
294 if (err)
295 return err;
296
297 iomap = pcim_iomap_table(pdev);
298 if (!iomap)
299 return -ENOMEM;
300
301 pci_set_master(pdev);
302
303 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
304 if (err) {
305 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
306 if (err)
307 return err;
308 }
309
310 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
311 if (err) {
312 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
313 if (err)
314 return err;
315 }
316
317 return 0;
318}
319
320static int num_controllers(struct pci_dev *pdev)
321{
322 /* bar size alone can tell us if we are running with a dual controller
323 * part, no need to trust revision ids that might be under broken firmware
324 * control
325 */
326 resource_size_t scu_bar_size = pci_resource_len(pdev, SCI_SCU_BAR*2);
327 resource_size_t smu_bar_size = pci_resource_len(pdev, SCI_SMU_BAR*2);
328
329 if (scu_bar_size >= SCI_SCU_BAR_SIZE*SCI_MAX_CONTROLLERS &&
330 smu_bar_size >= SCI_SMU_BAR_SIZE*SCI_MAX_CONTROLLERS)
331 return SCI_MAX_CONTROLLERS;
332 else
333 return 1;
334}
335
336static int isci_setup_interrupts(struct pci_dev *pdev)
337{
338 int err, i, num_msix;
339 struct isci_host *ihost;
340 struct isci_pci_info *pci_info = to_pci_info(pdev);
341
342 /*
343 * Determine the number of vectors associated with this
344 * PCI function.
345 */
346 num_msix = num_controllers(pdev) * SCI_NUM_MSI_X_INT;
347
348 for (i = 0; i < num_msix; i++)
349 pci_info->msix_entries[i].entry = i;
350
351 err = pci_enable_msix(pdev, pci_info->msix_entries, num_msix);
352 if (err)
353 goto intx;
354
355 for (i = 0; i < num_msix; i++) {
356 int id = i / SCI_NUM_MSI_X_INT;
357 struct msix_entry *msix = &pci_info->msix_entries[i];
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, msix->vector, isr, 0,
368 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 msix = &pci_info->msix_entries[i];
377 devm_free_irq(&pdev->dev, msix->vector, ihost);
378 }
379 pci_disable_msix(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, pdev->irq, isci_intx_isr,
387 IRQF_SHARED, DRV_NAME"-intx", ihost);
388 if (err)
389 break;
390 }
391 return err;
392}
393
394static struct isci_host *isci_host_alloc(struct pci_dev *pdev, int id)
395{
396 struct isci_host *isci_host;
397 struct Scsi_Host *shost;
398 int err;
399
400 isci_host = devm_kzalloc(&pdev->dev, sizeof(*isci_host), GFP_KERNEL);
401 if (!isci_host)
402 return NULL;
403
404 isci_host->pdev = pdev;
405 isci_host->id = id;
406
407 shost = scsi_host_alloc(&isci_sht, sizeof(void *));
408 if (!shost)
409 return NULL;
410 isci_host->shost = shost;
411
412 err = isci_host_init(isci_host);
413 if (err)
414 goto err_shost;
415
416 SHOST_TO_SAS_HA(shost) = &isci_host->sas_ha;
417 isci_host->sas_ha.core.shost = shost;
418 shost->transportt = isci_transport_template;
419
420 shost->max_id = ~0;
421 shost->max_lun = ~0;
422 shost->max_cmd_len = MAX_COMMAND_SIZE;
423
424 err = scsi_add_host(shost, &pdev->dev);
425 if (err)
426 goto err_shost;
427
428 err = isci_register_sas_ha(isci_host);
429 if (err)
430 goto err_shost_remove;
431
432 return isci_host;
433
434 err_shost_remove:
435 scsi_remove_host(shost);
436 err_shost:
437 scsi_host_put(shost);
438
439 return NULL;
440}
441
442static int __devinit isci_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
443{
444 struct isci_pci_info *pci_info;
445 int err, i;
446 struct isci_host *isci_host;
447 const struct firmware *fw = NULL;
448 struct isci_orom *orom = NULL;
449 char *source = "(platform)";
450
451 dev_info(&pdev->dev, "driver configured for rev: %d silicon\n",
452 pdev->revision);
453
454 pci_info = devm_kzalloc(&pdev->dev, sizeof(*pci_info), GFP_KERNEL);
455 if (!pci_info)
456 return -ENOMEM;
457 pci_set_drvdata(pdev, pci_info);
458
459 if (efi_enabled)
460 orom = isci_get_efi_var(pdev);
461
462 if (!orom)
463 orom = isci_request_oprom(pdev);
464
465 for (i = 0; orom && i < ARRAY_SIZE(orom->ctrl); i++) {
466 if (sci_oem_parameters_validate(&orom->ctrl[i])) {
467 dev_warn(&pdev->dev,
468 "[%d]: invalid oem parameters detected, falling back to firmware\n", i);
469 devm_kfree(&pdev->dev, orom);
470 orom = NULL;
471 break;
472 }
473 }
474
475 if (!orom) {
476 source = "(firmware)";
477 orom = isci_request_firmware(pdev, fw);
478 if (!orom) {
479 /* TODO convert this to WARN_TAINT_ONCE once the
480 * orom/efi parameter support is widely available
481 */
482 dev_warn(&pdev->dev,
483 "Loading user firmware failed, using default "
484 "values\n");
485 dev_warn(&pdev->dev,
486 "Default OEM configuration being used: 4 "
487 "narrow ports, and default SAS Addresses\n");
488 }
489 }
490
491 if (orom)
492 dev_info(&pdev->dev,
493 "OEM SAS parameters (version: %u.%u) loaded %s\n",
494 (orom->hdr.version & 0xf0) >> 4,
495 (orom->hdr.version & 0xf), source);
496
497 pci_info->orom = orom;
498
499 err = isci_pci_init(pdev);
500 if (err)
501 return err;
502
503 for (i = 0; i < num_controllers(pdev); i++) {
504 struct isci_host *h = isci_host_alloc(pdev, i);
505
506 if (!h) {
507 err = -ENOMEM;
508 goto err_host_alloc;
509 }
510 pci_info->hosts[i] = h;
511 }
512
513 err = isci_setup_interrupts(pdev);
514 if (err)
515 goto err_host_alloc;
516
517 for_each_isci_host(i, isci_host, pdev)
518 scsi_scan_host(isci_host->shost);
519
520 return 0;
521
522 err_host_alloc:
523 for_each_isci_host(i, isci_host, pdev)
524 isci_unregister(isci_host);
525 return err;
526}
527
528static void __devexit isci_pci_remove(struct pci_dev *pdev)
529{
530 struct isci_host *ihost;
531 int i;
532
533 for_each_isci_host(i, ihost, pdev) {
534 isci_unregister(ihost);
535 isci_host_deinit(ihost);
536 sci_controller_disable_interrupts(ihost);
537 }
538}
539
540static struct pci_driver isci_pci_driver = {
541 .name = DRV_NAME,
542 .id_table = isci_id_table,
543 .probe = isci_pci_probe,
544 .remove = __devexit_p(isci_pci_remove),
545};
546
547static __init int isci_init(void)
548{
549 int err;
550
551 pr_info("%s: Intel(R) C600 SAS Controller Driver - version %s\n",
552 DRV_NAME, DRV_VERSION);
553
554 isci_transport_template = sas_domain_attach_transport(&isci_transport_ops);
555 if (!isci_transport_template)
556 return -ENOMEM;
557
558 err = pci_register_driver(&isci_pci_driver);
559 if (err)
560 sas_release_transport(isci_transport_template);
561
562 return err;
563}
564
565static __exit void isci_exit(void)
566{
567 pci_unregister_driver(&isci_pci_driver);
568 sas_release_transport(isci_transport_template);
569}
570
571MODULE_LICENSE("Dual BSD/GPL");
572MODULE_FIRMWARE(ISCI_FW_NAME);
573module_init(isci_init);
574module_exit(isci_exit);
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
74MODULE_VERSION(DRV_VERSION);
75
76static struct scsi_transport_template *isci_transport_template;
77
78static 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
94MODULE_DEVICE_TABLE(pci, isci_id_table);
95
96/* linux isci specific settings */
97
98unsigned char no_outbound_task_to = 2;
99module_param(no_outbound_task_to, byte, 0);
100MODULE_PARM_DESC(no_outbound_task_to, "No Outbound Task Timeout (1us incr)");
101
102u16 ssp_max_occ_to = 20;
103module_param(ssp_max_occ_to, ushort, 0);
104MODULE_PARM_DESC(ssp_max_occ_to, "SSP Max occupancy timeout (100us incr)");
105
106u16 stp_max_occ_to = 5;
107module_param(stp_max_occ_to, ushort, 0);
108MODULE_PARM_DESC(stp_max_occ_to, "STP Max occupancy timeout (100us incr)");
109
110u16 ssp_inactive_to = 5;
111module_param(ssp_inactive_to, ushort, 0);
112MODULE_PARM_DESC(ssp_inactive_to, "SSP inactivity timeout (100us incr)");
113
114u16 stp_inactive_to = 5;
115module_param(stp_inactive_to, ushort, 0);
116MODULE_PARM_DESC(stp_inactive_to, "STP inactivity timeout (100us incr)");
117
118unsigned char phy_gen = SCIC_SDS_PARM_GEN2_SPEED;
119module_param(phy_gen, byte, 0);
120MODULE_PARM_DESC(phy_gen, "PHY generation (1: 1.5Gbps 2: 3.0Gbps 3: 6.0Gbps)");
121
122unsigned char max_concurr_spinup;
123module_param(max_concurr_spinup, byte, 0);
124MODULE_PARM_DESC(max_concurr_spinup, "Max concurrent device spinup");
125
126uint cable_selection_override = CABLE_OVERRIDE_DISABLED;
127module_param(cable_selection_override, uint, 0);
128
129MODULE_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
134static 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
143static DEVICE_ATTR(isci_id, S_IRUGO, isci_show_id, NULL);
144
145struct device_attribute *isci_host_attrs[] = {
146 &dev_attr_isci_id,
147 NULL
148};
149
150static 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_bus_reset_handler = sas_eh_bus_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
176static 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 */
228static 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
267static 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 scsi_remove_host(shost);
276 sas_unregister_ha(&isci_host->sas_ha);
277
278 sas_remove_host(shost);
279 scsi_host_put(shost);
280}
281
282static int isci_pci_init(struct pci_dev *pdev)
283{
284 int err, bar_num, bar_mask = 0;
285 void __iomem * const *iomap;
286
287 err = pcim_enable_device(pdev);
288 if (err) {
289 dev_err(&pdev->dev,
290 "failed enable PCI device %s!\n",
291 pci_name(pdev));
292 return err;
293 }
294
295 for (bar_num = 0; bar_num < SCI_PCI_BAR_COUNT; bar_num++)
296 bar_mask |= 1 << (bar_num * 2);
297
298 err = pcim_iomap_regions(pdev, bar_mask, DRV_NAME);
299 if (err)
300 return err;
301
302 iomap = pcim_iomap_table(pdev);
303 if (!iomap)
304 return -ENOMEM;
305
306 pci_set_master(pdev);
307
308 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
309 if (err) {
310 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
311 if (err)
312 return err;
313 }
314
315 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
316 if (err) {
317 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32));
318 if (err)
319 return err;
320 }
321
322 return 0;
323}
324
325static int num_controllers(struct pci_dev *pdev)
326{
327 /* bar size alone can tell us if we are running with a dual controller
328 * part, no need to trust revision ids that might be under broken firmware
329 * control
330 */
331 resource_size_t scu_bar_size = pci_resource_len(pdev, SCI_SCU_BAR*2);
332 resource_size_t smu_bar_size = pci_resource_len(pdev, SCI_SMU_BAR*2);
333
334 if (scu_bar_size >= SCI_SCU_BAR_SIZE*SCI_MAX_CONTROLLERS &&
335 smu_bar_size >= SCI_SMU_BAR_SIZE*SCI_MAX_CONTROLLERS)
336 return SCI_MAX_CONTROLLERS;
337 else
338 return 1;
339}
340
341static int isci_setup_interrupts(struct pci_dev *pdev)
342{
343 int err, i, num_msix;
344 struct isci_host *ihost;
345 struct isci_pci_info *pci_info = to_pci_info(pdev);
346
347 /*
348 * Determine the number of vectors associated with this
349 * PCI function.
350 */
351 num_msix = num_controllers(pdev) * SCI_NUM_MSI_X_INT;
352
353 err = pci_alloc_irq_vectors(pdev, num_msix, num_msix, PCI_IRQ_MSIX);
354 if (err < 0)
355 goto intx;
356
357 for (i = 0; i < num_msix; i++) {
358 int id = i / SCI_NUM_MSI_X_INT;
359 irq_handler_t isr;
360
361 ihost = pci_info->hosts[id];
362 /* odd numbered vectors are error interrupts */
363 if (i & 1)
364 isr = isci_error_isr;
365 else
366 isr = isci_msix_isr;
367
368 err = devm_request_irq(&pdev->dev, pci_irq_vector(pdev, i),
369 isr, 0, DRV_NAME"-msix", ihost);
370 if (!err)
371 continue;
372
373 dev_info(&pdev->dev, "msix setup failed falling back to intx\n");
374 while (i--) {
375 id = i / SCI_NUM_MSI_X_INT;
376 ihost = pci_info->hosts[id];
377 devm_free_irq(&pdev->dev, pci_irq_vector(pdev, i),
378 ihost);
379 }
380 pci_free_irq_vectors(pdev);
381 goto intx;
382 }
383 return 0;
384
385 intx:
386 for_each_isci_host(i, ihost, pdev) {
387 err = devm_request_irq(&pdev->dev, pci_irq_vector(pdev, 0),
388 isci_intx_isr, IRQF_SHARED, DRV_NAME"-intx",
389 ihost);
390 if (err)
391 break;
392 }
393 return err;
394}
395
396static void isci_user_parameters_get(struct sci_user_parameters *u)
397{
398 int i;
399
400 for (i = 0; i < SCI_MAX_PHYS; i++) {
401 struct sci_phy_user_params *u_phy = &u->phys[i];
402
403 u_phy->max_speed_generation = phy_gen;
404
405 /* we are not exporting these for now */
406 u_phy->align_insertion_frequency = 0x7f;
407 u_phy->in_connection_align_insertion_frequency = 0xff;
408 u_phy->notify_enable_spin_up_insertion_frequency = 0x33;
409 }
410
411 u->stp_inactivity_timeout = stp_inactive_to;
412 u->ssp_inactivity_timeout = ssp_inactive_to;
413 u->stp_max_occupancy_timeout = stp_max_occ_to;
414 u->ssp_max_occupancy_timeout = ssp_max_occ_to;
415 u->no_outbound_task_timeout = no_outbound_task_to;
416 u->max_concurr_spinup = max_concurr_spinup;
417}
418
419static enum sci_status sci_user_parameters_set(struct isci_host *ihost,
420 struct sci_user_parameters *sci_parms)
421{
422 u16 index;
423
424 /*
425 * Validate the user parameters. If they are not legal, then
426 * return a failure.
427 */
428 for (index = 0; index < SCI_MAX_PHYS; index++) {
429 struct sci_phy_user_params *u;
430
431 u = &sci_parms->phys[index];
432
433 if (!((u->max_speed_generation <= SCIC_SDS_PARM_MAX_SPEED) &&
434 (u->max_speed_generation > SCIC_SDS_PARM_NO_SPEED)))
435 return SCI_FAILURE_INVALID_PARAMETER_VALUE;
436
437 if (u->in_connection_align_insertion_frequency < 3)
438 return SCI_FAILURE_INVALID_PARAMETER_VALUE;
439
440 if ((u->in_connection_align_insertion_frequency < 3) ||
441 (u->align_insertion_frequency == 0) ||
442 (u->notify_enable_spin_up_insertion_frequency == 0))
443 return SCI_FAILURE_INVALID_PARAMETER_VALUE;
444 }
445
446 if ((sci_parms->stp_inactivity_timeout == 0) ||
447 (sci_parms->ssp_inactivity_timeout == 0) ||
448 (sci_parms->stp_max_occupancy_timeout == 0) ||
449 (sci_parms->ssp_max_occupancy_timeout == 0) ||
450 (sci_parms->no_outbound_task_timeout == 0))
451 return SCI_FAILURE_INVALID_PARAMETER_VALUE;
452
453 memcpy(&ihost->user_parameters, sci_parms, sizeof(*sci_parms));
454
455 return SCI_SUCCESS;
456}
457
458static void sci_oem_defaults(struct isci_host *ihost)
459{
460 /* these defaults are overridden by the platform / firmware */
461 struct sci_user_parameters *user = &ihost->user_parameters;
462 struct sci_oem_params *oem = &ihost->oem_parameters;
463 int i;
464
465 /* Default to APC mode. */
466 oem->controller.mode_type = SCIC_PORT_AUTOMATIC_CONFIGURATION_MODE;
467
468 /* Default to APC mode. */
469 oem->controller.max_concurr_spin_up = 1;
470
471 /* Default to no SSC operation. */
472 oem->controller.do_enable_ssc = false;
473
474 /* Default to short cables on all phys. */
475 oem->controller.cable_selection_mask = 0;
476
477 /* Initialize all of the port parameter information to narrow ports. */
478 for (i = 0; i < SCI_MAX_PORTS; i++)
479 oem->ports[i].phy_mask = 0;
480
481 /* Initialize all of the phy parameter information. */
482 for (i = 0; i < SCI_MAX_PHYS; i++) {
483 /* Default to 3G (i.e. Gen 2). */
484 user->phys[i].max_speed_generation = SCIC_SDS_PARM_GEN2_SPEED;
485
486 /* the frequencies cannot be 0 */
487 user->phys[i].align_insertion_frequency = 0x7f;
488 user->phys[i].in_connection_align_insertion_frequency = 0xff;
489 user->phys[i].notify_enable_spin_up_insertion_frequency = 0x33;
490
491 /* Previous Vitesse based expanders had a arbitration issue that
492 * is worked around by having the upper 32-bits of SAS address
493 * with a value greater then the Vitesse company identifier.
494 * Hence, usage of 0x5FCFFFFF.
495 */
496 oem->phys[i].sas_address.low = 0x1 + ihost->id;
497 oem->phys[i].sas_address.high = 0x5FCFFFFF;
498 }
499
500 user->stp_inactivity_timeout = 5;
501 user->ssp_inactivity_timeout = 5;
502 user->stp_max_occupancy_timeout = 5;
503 user->ssp_max_occupancy_timeout = 20;
504 user->no_outbound_task_timeout = 2;
505}
506
507static struct isci_host *isci_host_alloc(struct pci_dev *pdev, int id)
508{
509 struct isci_orom *orom = to_pci_info(pdev)->orom;
510 struct sci_user_parameters sci_user_params;
511 u8 oem_version = ISCI_ROM_VER_1_0;
512 struct isci_host *ihost;
513 struct Scsi_Host *shost;
514 int err, i;
515
516 ihost = devm_kzalloc(&pdev->dev, sizeof(*ihost), GFP_KERNEL);
517 if (!ihost)
518 return NULL;
519
520 ihost->pdev = pdev;
521 ihost->id = id;
522 spin_lock_init(&ihost->scic_lock);
523 init_waitqueue_head(&ihost->eventq);
524 ihost->sas_ha.dev = &ihost->pdev->dev;
525 ihost->sas_ha.lldd_ha = ihost;
526 tasklet_init(&ihost->completion_tasklet,
527 isci_host_completion_routine, (unsigned long)ihost);
528
529 /* validate module parameters */
530 /* TODO: kill struct sci_user_parameters and reference directly */
531 sci_oem_defaults(ihost);
532 isci_user_parameters_get(&sci_user_params);
533 if (sci_user_parameters_set(ihost, &sci_user_params)) {
534 dev_warn(&pdev->dev,
535 "%s: sci_user_parameters_set failed\n", __func__);
536 return NULL;
537 }
538
539 /* sanity check platform (or 'firmware') oem parameters */
540 if (orom) {
541 if (id < 0 || id >= SCI_MAX_CONTROLLERS || id > orom->hdr.num_elements) {
542 dev_warn(&pdev->dev, "parsing firmware oem parameters failed\n");
543 return NULL;
544 }
545 ihost->oem_parameters = orom->ctrl[id];
546 oem_version = orom->hdr.version;
547 }
548
549 /* validate oem parameters (platform, firmware, or built-in defaults) */
550 if (sci_oem_parameters_validate(&ihost->oem_parameters, oem_version)) {
551 dev_warn(&pdev->dev, "oem parameter validation failed\n");
552 return NULL;
553 }
554
555 for (i = 0; i < SCI_MAX_PORTS; i++) {
556 struct isci_port *iport = &ihost->ports[i];
557
558 INIT_LIST_HEAD(&iport->remote_dev_list);
559 iport->isci_host = ihost;
560 }
561
562 for (i = 0; i < SCI_MAX_PHYS; i++)
563 isci_phy_init(&ihost->phys[i], ihost, i);
564
565 for (i = 0; i < SCI_MAX_REMOTE_DEVICES; i++) {
566 struct isci_remote_device *idev = &ihost->devices[i];
567
568 INIT_LIST_HEAD(&idev->node);
569 }
570
571 shost = scsi_host_alloc(&isci_sht, sizeof(void *));
572 if (!shost)
573 return NULL;
574
575 dev_info(&pdev->dev, "%sSCU controller %d: phy 3-0 cables: "
576 "{%s, %s, %s, %s}\n",
577 (is_cable_select_overridden() ? "* " : ""), ihost->id,
578 lookup_cable_names(decode_cable_selection(ihost, 3)),
579 lookup_cable_names(decode_cable_selection(ihost, 2)),
580 lookup_cable_names(decode_cable_selection(ihost, 1)),
581 lookup_cable_names(decode_cable_selection(ihost, 0)));
582
583 err = isci_host_init(ihost);
584 if (err)
585 goto err_shost;
586
587 SHOST_TO_SAS_HA(shost) = &ihost->sas_ha;
588 ihost->sas_ha.core.shost = shost;
589 shost->transportt = isci_transport_template;
590
591 shost->max_id = ~0;
592 shost->max_lun = ~0;
593 shost->max_cmd_len = MAX_COMMAND_SIZE;
594
595 err = scsi_add_host(shost, &pdev->dev);
596 if (err)
597 goto err_shost;
598
599 err = isci_register_sas_ha(ihost);
600 if (err)
601 goto err_shost_remove;
602
603 return ihost;
604
605 err_shost_remove:
606 scsi_remove_host(shost);
607 err_shost:
608 scsi_host_put(shost);
609
610 return NULL;
611}
612
613static int isci_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
614{
615 struct isci_pci_info *pci_info;
616 int err, i;
617 struct isci_host *isci_host;
618 const struct firmware *fw = NULL;
619 struct isci_orom *orom = NULL;
620 char *source = "(platform)";
621
622 dev_info(&pdev->dev, "driver configured for rev: %d silicon\n",
623 pdev->revision);
624
625 pci_info = devm_kzalloc(&pdev->dev, sizeof(*pci_info), GFP_KERNEL);
626 if (!pci_info)
627 return -ENOMEM;
628 pci_set_drvdata(pdev, pci_info);
629
630 if (efi_enabled(EFI_RUNTIME_SERVICES))
631 orom = isci_get_efi_var(pdev);
632
633 if (!orom)
634 orom = isci_request_oprom(pdev);
635
636 for (i = 0; orom && i < num_controllers(pdev); i++) {
637 if (sci_oem_parameters_validate(&orom->ctrl[i],
638 orom->hdr.version)) {
639 dev_warn(&pdev->dev,
640 "[%d]: invalid oem parameters detected, falling back to firmware\n", i);
641 orom = NULL;
642 break;
643 }
644 }
645
646 if (!orom) {
647 source = "(firmware)";
648 orom = isci_request_firmware(pdev, fw);
649 if (!orom) {
650 /* TODO convert this to WARN_TAINT_ONCE once the
651 * orom/efi parameter support is widely available
652 */
653 dev_warn(&pdev->dev,
654 "Loading user firmware failed, using default "
655 "values\n");
656 dev_warn(&pdev->dev,
657 "Default OEM configuration being used: 4 "
658 "narrow ports, and default SAS Addresses\n");
659 }
660 }
661
662 if (orom)
663 dev_info(&pdev->dev,
664 "OEM SAS parameters (version: %u.%u) loaded %s\n",
665 (orom->hdr.version & 0xf0) >> 4,
666 (orom->hdr.version & 0xf), source);
667
668 pci_info->orom = orom;
669
670 err = isci_pci_init(pdev);
671 if (err)
672 return err;
673
674 for (i = 0; i < num_controllers(pdev); i++) {
675 struct isci_host *h = isci_host_alloc(pdev, i);
676
677 if (!h) {
678 err = -ENOMEM;
679 goto err_host_alloc;
680 }
681 pci_info->hosts[i] = h;
682
683 /* turn on DIF support */
684 scsi_host_set_prot(to_shost(h),
685 SHOST_DIF_TYPE1_PROTECTION |
686 SHOST_DIF_TYPE2_PROTECTION |
687 SHOST_DIF_TYPE3_PROTECTION);
688 scsi_host_set_guard(to_shost(h), SHOST_DIX_GUARD_CRC);
689 }
690
691 err = isci_setup_interrupts(pdev);
692 if (err)
693 goto err_host_alloc;
694
695 for_each_isci_host(i, isci_host, pdev)
696 scsi_scan_host(to_shost(isci_host));
697
698 return 0;
699
700 err_host_alloc:
701 for_each_isci_host(i, isci_host, pdev)
702 isci_unregister(isci_host);
703 return err;
704}
705
706static void isci_pci_remove(struct pci_dev *pdev)
707{
708 struct isci_host *ihost;
709 int i;
710
711 for_each_isci_host(i, ihost, pdev) {
712 wait_for_start(ihost);
713 isci_unregister(ihost);
714 isci_host_deinit(ihost);
715 }
716}
717
718#ifdef CONFIG_PM_SLEEP
719static int isci_suspend(struct device *dev)
720{
721 struct pci_dev *pdev = to_pci_dev(dev);
722 struct isci_host *ihost;
723 int i;
724
725 for_each_isci_host(i, ihost, pdev) {
726 sas_suspend_ha(&ihost->sas_ha);
727 isci_host_deinit(ihost);
728 }
729
730 pci_save_state(pdev);
731 pci_disable_device(pdev);
732 pci_set_power_state(pdev, PCI_D3hot);
733
734 return 0;
735}
736
737static int isci_resume(struct device *dev)
738{
739 struct pci_dev *pdev = to_pci_dev(dev);
740 struct isci_host *ihost;
741 int rc, i;
742
743 pci_set_power_state(pdev, PCI_D0);
744 pci_restore_state(pdev);
745
746 rc = pcim_enable_device(pdev);
747 if (rc) {
748 dev_err(&pdev->dev,
749 "enabling device failure after resume(%d)\n", rc);
750 return rc;
751 }
752
753 pci_set_master(pdev);
754
755 for_each_isci_host(i, ihost, pdev) {
756 sas_prep_resume_ha(&ihost->sas_ha);
757
758 isci_host_init(ihost);
759 isci_host_start(ihost->sas_ha.core.shost);
760 wait_for_start(ihost);
761
762 sas_resume_ha(&ihost->sas_ha);
763 }
764
765 return 0;
766}
767#endif
768
769static SIMPLE_DEV_PM_OPS(isci_pm_ops, isci_suspend, isci_resume);
770
771static struct pci_driver isci_pci_driver = {
772 .name = DRV_NAME,
773 .id_table = isci_id_table,
774 .probe = isci_pci_probe,
775 .remove = isci_pci_remove,
776 .driver.pm = &isci_pm_ops,
777};
778
779static __init int isci_init(void)
780{
781 int err;
782
783 pr_info("%s: Intel(R) C600 SAS Controller Driver - version %s\n",
784 DRV_NAME, DRV_VERSION);
785
786 isci_transport_template = sas_domain_attach_transport(&isci_transport_ops);
787 if (!isci_transport_template)
788 return -ENOMEM;
789
790 err = pci_register_driver(&isci_pci_driver);
791 if (err)
792 sas_release_transport(isci_transport_template);
793
794 return err;
795}
796
797static __exit void isci_exit(void)
798{
799 pci_unregister_driver(&isci_pci_driver);
800 sas_release_transport(isci_transport_template);
801}
802
803MODULE_LICENSE("Dual BSD/GPL");
804MODULE_FIRMWARE(ISCI_FW_NAME);
805module_init(isci_init);
806module_exit(isci_exit);