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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 "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 | (u->align_insertion_frequency == 0) || | |
438 | (u->notify_enable_spin_up_insertion_frequency == 0)) | |
439 | return SCI_FAILURE_INVALID_PARAMETER_VALUE; | |
440 | } | |
441 | ||
442 | if ((sci_parms->stp_inactivity_timeout == 0) || | |
443 | (sci_parms->ssp_inactivity_timeout == 0) || | |
444 | (sci_parms->stp_max_occupancy_timeout == 0) || | |
445 | (sci_parms->ssp_max_occupancy_timeout == 0) || | |
446 | (sci_parms->no_outbound_task_timeout == 0)) | |
447 | return SCI_FAILURE_INVALID_PARAMETER_VALUE; | |
448 | ||
449 | memcpy(&ihost->user_parameters, sci_parms, sizeof(*sci_parms)); | |
450 | ||
451 | return SCI_SUCCESS; | |
452 | } | |
453 | ||
454 | static void sci_oem_defaults(struct isci_host *ihost) | |
455 | { | |
456 | /* these defaults are overridden by the platform / firmware */ | |
457 | struct sci_user_parameters *user = &ihost->user_parameters; | |
458 | struct sci_oem_params *oem = &ihost->oem_parameters; | |
459 | int i; | |
460 | ||
461 | /* Default to APC mode. */ | |
462 | oem->controller.mode_type = SCIC_PORT_AUTOMATIC_CONFIGURATION_MODE; | |
463 | ||
464 | /* Default to APC mode. */ | |
465 | oem->controller.max_concurr_spin_up = 1; | |
466 | ||
467 | /* Default to no SSC operation. */ | |
468 | oem->controller.do_enable_ssc = false; | |
469 | ||
470 | /* Default to short cables on all phys. */ | |
471 | oem->controller.cable_selection_mask = 0; | |
472 | ||
473 | /* Initialize all of the port parameter information to narrow ports. */ | |
474 | for (i = 0; i < SCI_MAX_PORTS; i++) | |
475 | oem->ports[i].phy_mask = 0; | |
476 | ||
477 | /* Initialize all of the phy parameter information. */ | |
478 | for (i = 0; i < SCI_MAX_PHYS; i++) { | |
479 | /* Default to 3G (i.e. Gen 2). */ | |
480 | user->phys[i].max_speed_generation = SCIC_SDS_PARM_GEN2_SPEED; | |
481 | ||
482 | /* the frequencies cannot be 0 */ | |
483 | user->phys[i].align_insertion_frequency = 0x7f; | |
484 | user->phys[i].in_connection_align_insertion_frequency = 0xff; | |
485 | user->phys[i].notify_enable_spin_up_insertion_frequency = 0x33; | |
486 | ||
487 | /* Previous Vitesse based expanders had a arbitration issue that | |
488 | * is worked around by having the upper 32-bits of SAS address | |
489 | * with a value greater then the Vitesse company identifier. | |
490 | * Hence, usage of 0x5FCFFFFF. | |
491 | */ | |
492 | oem->phys[i].sas_address.low = 0x1 + ihost->id; | |
493 | oem->phys[i].sas_address.high = 0x5FCFFFFF; | |
494 | } | |
495 | ||
496 | user->stp_inactivity_timeout = 5; | |
497 | user->ssp_inactivity_timeout = 5; | |
498 | user->stp_max_occupancy_timeout = 5; | |
499 | user->ssp_max_occupancy_timeout = 20; | |
500 | user->no_outbound_task_timeout = 2; | |
501 | } | |
502 | ||
503 | static struct isci_host *isci_host_alloc(struct pci_dev *pdev, int id) | |
504 | { | |
505 | struct isci_orom *orom = to_pci_info(pdev)->orom; | |
506 | struct sci_user_parameters sci_user_params; | |
507 | u8 oem_version = ISCI_ROM_VER_1_0; | |
508 | struct isci_host *ihost; | |
509 | struct Scsi_Host *shost; | |
510 | int err, i; | |
511 | ||
512 | ihost = devm_kzalloc(&pdev->dev, sizeof(*ihost), GFP_KERNEL); | |
513 | if (!ihost) | |
514 | return NULL; | |
515 | ||
516 | ihost->pdev = pdev; | |
517 | ihost->id = id; | |
518 | spin_lock_init(&ihost->scic_lock); | |
519 | init_waitqueue_head(&ihost->eventq); | |
520 | ihost->sas_ha.dev = &ihost->pdev->dev; | |
521 | ihost->sas_ha.lldd_ha = ihost; | |
522 | tasklet_init(&ihost->completion_tasklet, | |
523 | isci_host_completion_routine, (unsigned long)ihost); | |
524 | ||
525 | /* validate module parameters */ | |
526 | /* TODO: kill struct sci_user_parameters and reference directly */ | |
527 | sci_oem_defaults(ihost); | |
528 | isci_user_parameters_get(&sci_user_params); | |
529 | if (sci_user_parameters_set(ihost, &sci_user_params)) { | |
530 | dev_warn(&pdev->dev, | |
531 | "%s: sci_user_parameters_set failed\n", __func__); | |
532 | return NULL; | |
533 | } | |
534 | ||
535 | /* sanity check platform (or 'firmware') oem parameters */ | |
536 | if (orom) { | |
537 | if (id < 0 || id >= SCI_MAX_CONTROLLERS || id > orom->hdr.num_elements) { | |
538 | dev_warn(&pdev->dev, "parsing firmware oem parameters failed\n"); | |
539 | return NULL; | |
540 | } | |
541 | ihost->oem_parameters = orom->ctrl[id]; | |
542 | oem_version = orom->hdr.version; | |
543 | } | |
544 | ||
545 | /* validate oem parameters (platform, firmware, or built-in defaults) */ | |
546 | if (sci_oem_parameters_validate(&ihost->oem_parameters, oem_version)) { | |
547 | dev_warn(&pdev->dev, "oem parameter validation failed\n"); | |
548 | return NULL; | |
549 | } | |
550 | ||
551 | for (i = 0; i < SCI_MAX_PORTS; i++) { | |
552 | struct isci_port *iport = &ihost->ports[i]; | |
553 | ||
554 | INIT_LIST_HEAD(&iport->remote_dev_list); | |
555 | iport->isci_host = ihost; | |
556 | } | |
557 | ||
558 | for (i = 0; i < SCI_MAX_PHYS; i++) | |
559 | isci_phy_init(&ihost->phys[i], ihost, i); | |
560 | ||
561 | for (i = 0; i < SCI_MAX_REMOTE_DEVICES; i++) { | |
562 | struct isci_remote_device *idev = &ihost->devices[i]; | |
563 | ||
564 | INIT_LIST_HEAD(&idev->node); | |
565 | } | |
566 | ||
567 | shost = scsi_host_alloc(&isci_sht, sizeof(void *)); | |
568 | if (!shost) | |
569 | return NULL; | |
570 | ||
571 | dev_info(&pdev->dev, "%sSCU controller %d: phy 3-0 cables: " | |
572 | "{%s, %s, %s, %s}\n", | |
573 | (is_cable_select_overridden() ? "* " : ""), ihost->id, | |
574 | lookup_cable_names(decode_cable_selection(ihost, 3)), | |
575 | lookup_cable_names(decode_cable_selection(ihost, 2)), | |
576 | lookup_cable_names(decode_cable_selection(ihost, 1)), | |
577 | lookup_cable_names(decode_cable_selection(ihost, 0))); | |
578 | ||
579 | err = isci_host_init(ihost); | |
580 | if (err) | |
581 | goto err_shost; | |
582 | ||
583 | SHOST_TO_SAS_HA(shost) = &ihost->sas_ha; | |
584 | ihost->sas_ha.core.shost = shost; | |
585 | shost->transportt = isci_transport_template; | |
586 | ||
587 | shost->max_id = ~0; | |
588 | shost->max_lun = ~0; | |
589 | shost->max_cmd_len = MAX_COMMAND_SIZE; | |
590 | ||
591 | err = scsi_add_host(shost, &pdev->dev); | |
592 | if (err) | |
593 | goto err_shost; | |
594 | ||
595 | err = isci_register_sas_ha(ihost); | |
596 | if (err) | |
597 | goto err_shost_remove; | |
598 | ||
599 | return ihost; | |
600 | ||
601 | err_shost_remove: | |
602 | scsi_remove_host(shost); | |
603 | err_shost: | |
604 | scsi_host_put(shost); | |
605 | ||
606 | return NULL; | |
607 | } | |
608 | ||
609 | static int isci_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) | |
610 | { | |
611 | struct isci_pci_info *pci_info; | |
612 | int err, i; | |
613 | struct isci_host *isci_host; | |
614 | const struct firmware *fw = NULL; | |
615 | struct isci_orom *orom = NULL; | |
616 | char *source = "(platform)"; | |
617 | ||
618 | dev_info(&pdev->dev, "driver configured for rev: %d silicon\n", | |
619 | pdev->revision); | |
620 | ||
621 | pci_info = devm_kzalloc(&pdev->dev, sizeof(*pci_info), GFP_KERNEL); | |
622 | if (!pci_info) | |
623 | return -ENOMEM; | |
624 | pci_set_drvdata(pdev, pci_info); | |
625 | ||
626 | if (efi_enabled(EFI_RUNTIME_SERVICES)) | |
627 | orom = isci_get_efi_var(pdev); | |
628 | ||
629 | if (!orom) | |
630 | orom = isci_request_oprom(pdev); | |
631 | ||
632 | for (i = 0; orom && i < num_controllers(pdev); i++) { | |
633 | if (sci_oem_parameters_validate(&orom->ctrl[i], | |
634 | orom->hdr.version)) { | |
635 | dev_warn(&pdev->dev, | |
636 | "[%d]: invalid oem parameters detected, falling back to firmware\n", i); | |
637 | orom = NULL; | |
638 | break; | |
639 | } | |
640 | } | |
641 | ||
642 | if (!orom) { | |
643 | source = "(firmware)"; | |
644 | orom = isci_request_firmware(pdev, fw); | |
645 | if (!orom) { | |
646 | /* TODO convert this to WARN_TAINT_ONCE once the | |
647 | * orom/efi parameter support is widely available | |
648 | */ | |
649 | dev_warn(&pdev->dev, | |
650 | "Loading user firmware failed, using default " | |
651 | "values\n"); | |
652 | dev_warn(&pdev->dev, | |
653 | "Default OEM configuration being used: 4 " | |
654 | "narrow ports, and default SAS Addresses\n"); | |
655 | } | |
656 | } | |
657 | ||
658 | if (orom) | |
659 | dev_info(&pdev->dev, | |
660 | "OEM SAS parameters (version: %u.%u) loaded %s\n", | |
661 | (orom->hdr.version & 0xf0) >> 4, | |
662 | (orom->hdr.version & 0xf), source); | |
663 | ||
664 | pci_info->orom = orom; | |
665 | ||
666 | err = isci_pci_init(pdev); | |
667 | if (err) | |
668 | return err; | |
669 | ||
670 | for (i = 0; i < num_controllers(pdev); i++) { | |
671 | struct isci_host *h = isci_host_alloc(pdev, i); | |
672 | ||
673 | if (!h) { | |
674 | err = -ENOMEM; | |
675 | goto err_host_alloc; | |
676 | } | |
677 | pci_info->hosts[i] = h; | |
678 | ||
679 | /* turn on DIF support */ | |
680 | scsi_host_set_prot(to_shost(h), | |
681 | SHOST_DIF_TYPE1_PROTECTION | | |
682 | SHOST_DIF_TYPE2_PROTECTION | | |
683 | SHOST_DIF_TYPE3_PROTECTION); | |
684 | scsi_host_set_guard(to_shost(h), SHOST_DIX_GUARD_CRC); | |
685 | } | |
686 | ||
687 | err = isci_setup_interrupts(pdev); | |
688 | if (err) | |
689 | goto err_host_alloc; | |
690 | ||
691 | for_each_isci_host(i, isci_host, pdev) | |
692 | scsi_scan_host(to_shost(isci_host)); | |
693 | ||
694 | return 0; | |
695 | ||
696 | err_host_alloc: | |
697 | for_each_isci_host(i, isci_host, pdev) | |
698 | isci_unregister(isci_host); | |
699 | return err; | |
700 | } | |
701 | ||
702 | static void isci_pci_remove(struct pci_dev *pdev) | |
703 | { | |
704 | struct isci_host *ihost; | |
705 | int i; | |
706 | ||
707 | for_each_isci_host(i, ihost, pdev) { | |
708 | wait_for_start(ihost); | |
709 | isci_unregister(ihost); | |
710 | isci_host_deinit(ihost); | |
711 | } | |
712 | } | |
713 | ||
714 | #ifdef CONFIG_PM_SLEEP | |
715 | static int isci_suspend(struct device *dev) | |
716 | { | |
717 | struct pci_dev *pdev = to_pci_dev(dev); | |
718 | struct isci_host *ihost; | |
719 | int i; | |
720 | ||
721 | for_each_isci_host(i, ihost, pdev) { | |
722 | sas_suspend_ha(&ihost->sas_ha); | |
723 | isci_host_deinit(ihost); | |
724 | } | |
725 | ||
726 | pci_save_state(pdev); | |
727 | pci_disable_device(pdev); | |
728 | pci_set_power_state(pdev, PCI_D3hot); | |
729 | ||
730 | return 0; | |
731 | } | |
732 | ||
733 | static int isci_resume(struct device *dev) | |
734 | { | |
735 | struct pci_dev *pdev = to_pci_dev(dev); | |
736 | struct isci_host *ihost; | |
737 | int rc, i; | |
738 | ||
739 | pci_set_power_state(pdev, PCI_D0); | |
740 | pci_restore_state(pdev); | |
741 | ||
742 | rc = pcim_enable_device(pdev); | |
743 | if (rc) { | |
744 | dev_err(&pdev->dev, | |
745 | "enabling device failure after resume(%d)\n", rc); | |
746 | return rc; | |
747 | } | |
748 | ||
749 | pci_set_master(pdev); | |
750 | ||
751 | for_each_isci_host(i, ihost, pdev) { | |
752 | sas_prep_resume_ha(&ihost->sas_ha); | |
753 | ||
754 | isci_host_init(ihost); | |
755 | isci_host_start(ihost->sas_ha.core.shost); | |
756 | wait_for_start(ihost); | |
757 | ||
758 | sas_resume_ha(&ihost->sas_ha); | |
759 | } | |
760 | ||
761 | return 0; | |
762 | } | |
763 | #endif | |
764 | ||
765 | static SIMPLE_DEV_PM_OPS(isci_pm_ops, isci_suspend, isci_resume); | |
766 | ||
767 | static struct pci_driver isci_pci_driver = { | |
768 | .name = DRV_NAME, | |
769 | .id_table = isci_id_table, | |
770 | .probe = isci_pci_probe, | |
771 | .remove = isci_pci_remove, | |
772 | .driver.pm = &isci_pm_ops, | |
773 | }; | |
774 | ||
775 | static __init int isci_init(void) | |
776 | { | |
777 | int err; | |
778 | ||
779 | pr_info("%s: Intel(R) C600 SAS Controller Driver - version %s\n", | |
780 | DRV_NAME, DRV_VERSION); | |
781 | ||
782 | isci_transport_template = sas_domain_attach_transport(&isci_transport_ops); | |
783 | if (!isci_transport_template) | |
784 | return -ENOMEM; | |
785 | ||
786 | err = pci_register_driver(&isci_pci_driver); | |
787 | if (err) | |
788 | sas_release_transport(isci_transport_template); | |
789 | ||
790 | return err; | |
791 | } | |
792 | ||
793 | static __exit void isci_exit(void) | |
794 | { | |
795 | pci_unregister_driver(&isci_pci_driver); | |
796 | sas_release_transport(isci_transport_template); | |
797 | } | |
798 | ||
799 | MODULE_LICENSE("Dual BSD/GPL"); | |
800 | MODULE_FIRMWARE(ISCI_FW_NAME); | |
801 | module_init(isci_init); | |
802 | module_exit(isci_exit); |