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