Commit | Line | Data |
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6f231dda DW |
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> | |
d044af17 DW |
59 | #include <linux/firmware.h> |
60 | #include <linux/efi.h> | |
6f231dda | 61 | #include <asm/string.h> |
3a7bda83 | 62 | #include <scsi/scsi_host.h> |
13de2c54 | 63 | #include "host.h" |
6f231dda DW |
64 | #include "isci.h" |
65 | #include "task.h" | |
d044af17 | 66 | #include "probe_roms.h" |
6f231dda | 67 | |
1a251f52 | 68 | #define DRV_VERSION "1.2.0" |
98e2a5a3 DW |
69 | |
70 | MODULE_VERSION(DRV_VERSION); | |
71 | ||
6f231dda | 72 | static struct scsi_transport_template *isci_transport_template; |
6f231dda | 73 | |
9baa3c34 | 74 | static const struct pci_device_id isci_id_table[] = { |
6f231dda DW |
75 | { PCI_VDEVICE(INTEL, 0x1D61),}, |
76 | { PCI_VDEVICE(INTEL, 0x1D63),}, | |
77 | { PCI_VDEVICE(INTEL, 0x1D65),}, | |
78 | { PCI_VDEVICE(INTEL, 0x1D67),}, | |
79 | { PCI_VDEVICE(INTEL, 0x1D69),}, | |
80 | { PCI_VDEVICE(INTEL, 0x1D6B),}, | |
81 | { PCI_VDEVICE(INTEL, 0x1D60),}, | |
82 | { PCI_VDEVICE(INTEL, 0x1D62),}, | |
83 | { PCI_VDEVICE(INTEL, 0x1D64),}, | |
84 | { PCI_VDEVICE(INTEL, 0x1D66),}, | |
85 | { PCI_VDEVICE(INTEL, 0x1D68),}, | |
86 | { PCI_VDEVICE(INTEL, 0x1D6A),}, | |
87 | {} | |
88 | }; | |
89 | ||
6f231dda DW |
90 | MODULE_DEVICE_TABLE(pci, isci_id_table); |
91 | ||
6f231dda | 92 | /* linux isci specific settings */ |
6f231dda | 93 | |
6024d38b | 94 | unsigned char no_outbound_task_to = 2; |
b5f18a20 DJ |
95 | module_param(no_outbound_task_to, byte, 0); |
96 | MODULE_PARM_DESC(no_outbound_task_to, "No Outbound Task Timeout (1us incr)"); | |
97 | ||
98 | u16 ssp_max_occ_to = 20; | |
99 | module_param(ssp_max_occ_to, ushort, 0); | |
100 | MODULE_PARM_DESC(ssp_max_occ_to, "SSP Max occupancy timeout (100us incr)"); | |
101 | ||
102 | u16 stp_max_occ_to = 5; | |
103 | module_param(stp_max_occ_to, ushort, 0); | |
104 | MODULE_PARM_DESC(stp_max_occ_to, "STP Max occupancy timeout (100us incr)"); | |
105 | ||
106 | u16 ssp_inactive_to = 5; | |
107 | module_param(ssp_inactive_to, ushort, 0); | |
108 | MODULE_PARM_DESC(ssp_inactive_to, "SSP inactivity timeout (100us incr)"); | |
109 | ||
110 | u16 stp_inactive_to = 5; | |
111 | module_param(stp_inactive_to, ushort, 0); | |
112 | MODULE_PARM_DESC(stp_inactive_to, "STP inactivity timeout (100us incr)"); | |
113 | ||
be168a3b | 114 | unsigned char phy_gen = SCIC_SDS_PARM_GEN2_SPEED; |
b5f18a20 DJ |
115 | module_param(phy_gen, byte, 0); |
116 | MODULE_PARM_DESC(phy_gen, "PHY generation (1: 1.5Gbps 2: 3.0Gbps 3: 6.0Gbps)"); | |
117 | ||
7000f7c7 | 118 | unsigned char max_concurr_spinup; |
b5f18a20 DJ |
119 | module_param(max_concurr_spinup, byte, 0); |
120 | MODULE_PARM_DESC(max_concurr_spinup, "Max concurrent device spinup"); | |
121 | ||
9fee607f JS |
122 | uint cable_selection_override = CABLE_OVERRIDE_DISABLED; |
123 | module_param(cable_selection_override, uint, 0); | |
124 | ||
125 | MODULE_PARM_DESC(cable_selection_override, | |
126 | "This field indicates length of the SAS/SATA cable between " | |
127 | "host and device. If any bits > 15 are set (default) " | |
128 | "indicates \"use platform defaults\""); | |
129 | ||
3a7bda83 DJ |
130 | static ssize_t isci_show_id(struct device *dev, struct device_attribute *attr, char *buf) |
131 | { | |
132 | struct Scsi_Host *shost = container_of(dev, typeof(*shost), shost_dev); | |
133 | struct sas_ha_struct *sas_ha = SHOST_TO_SAS_HA(shost); | |
134 | struct isci_host *ihost = container_of(sas_ha, typeof(*ihost), sas_ha); | |
135 | ||
5fbf37e5 | 136 | return sysfs_emit(buf, "%d\n", ihost->id); |
3a7bda83 DJ |
137 | } |
138 | ||
139 | static DEVICE_ATTR(isci_id, S_IRUGO, isci_show_id, NULL); | |
140 | ||
7eae6af5 BVA |
141 | static struct attribute *isci_host_attrs[] = { |
142 | &dev_attr_isci_id.attr, | |
3a7bda83 DJ |
143 | NULL |
144 | }; | |
145 | ||
7eae6af5 BVA |
146 | ATTRIBUTE_GROUPS(isci_host); |
147 | ||
c65c4360 IP |
148 | static const struct attribute_group *isci_sdev_groups[] = { |
149 | &sas_ata_sdev_attr_group, | |
150 | NULL | |
151 | }; | |
152 | ||
eb60d17a | 153 | static const struct scsi_host_template isci_sht = { |
92a59bc8 | 154 | LIBSAS_SHT_BASE |
6f231dda | 155 | .scan_finished = isci_host_scan_finished, |
e468dc11 | 156 | .scan_start = isci_host_start, |
6f231dda | 157 | .can_queue = ISCI_CAN_QUEUE_VAL, |
6f231dda | 158 | .sg_tablesize = SG_ALL, |
92a59bc8 | 159 | .eh_abort_handler = sas_eh_abort_handler, |
7eae6af5 | 160 | .shost_groups = isci_host_groups, |
c65c4360 | 161 | .sdev_groups = isci_sdev_groups, |
c40ecc12 | 162 | .track_queue_depth = 1, |
6f231dda DW |
163 | }; |
164 | ||
165 | static struct sas_domain_function_template isci_transport_ops = { | |
166 | ||
167 | /* The class calls these to notify the LLDD of an event. */ | |
168 | .lldd_port_formed = isci_port_formed, | |
169 | .lldd_port_deformed = isci_port_deformed, | |
170 | ||
171 | /* The class calls these when a device is found or gone. */ | |
172 | .lldd_dev_found = isci_remote_device_found, | |
173 | .lldd_dev_gone = isci_remote_device_gone, | |
174 | ||
175 | .lldd_execute_task = isci_task_execute_task, | |
176 | /* Task Management Functions. Must be called from process context. */ | |
177 | .lldd_abort_task = isci_task_abort_task, | |
178 | .lldd_abort_task_set = isci_task_abort_task_set, | |
6f231dda DW |
179 | .lldd_clear_task_set = isci_task_clear_task_set, |
180 | .lldd_I_T_nexus_reset = isci_task_I_T_nexus_reset, | |
181 | .lldd_lu_reset = isci_task_lu_reset, | |
182 | .lldd_query_task = isci_task_query_task, | |
183 | ||
687833a0 DW |
184 | /* ata recovery called from ata-eh */ |
185 | .lldd_ata_check_ready = isci_ata_check_ready, | |
186 | ||
6f231dda DW |
187 | /* Port and Adapter management */ |
188 | .lldd_clear_nexus_port = isci_task_clear_nexus_port, | |
189 | .lldd_clear_nexus_ha = isci_task_clear_nexus_ha, | |
190 | ||
191 | /* Phy management */ | |
192 | .lldd_control_phy = isci_phy_control, | |
ad4f4c1d DW |
193 | |
194 | /* GPIO support */ | |
195 | .lldd_write_gpio = isci_gpio_write, | |
6f231dda DW |
196 | }; |
197 | ||
198 | ||
199 | /****************************************************************************** | |
200 | * P R O T E C T E D M E T H O D S | |
201 | ******************************************************************************/ | |
202 | ||
203 | ||
204 | ||
205 | /** | |
206 | * isci_register_sas_ha() - This method initializes various lldd | |
207 | * specific members of the sas_ha struct and calls the libsas | |
208 | * sas_register_ha() function. | |
209 | * @isci_host: This parameter specifies the lldd specific wrapper for the | |
210 | * libsas sas_ha struct. | |
211 | * | |
4907cb7b | 212 | * This method returns an error code indicating success or failure. The user |
6f231dda DW |
213 | * should check for possible memory allocation error return otherwise, a zero |
214 | * indicates success. | |
215 | */ | |
216 | static int isci_register_sas_ha(struct isci_host *isci_host) | |
217 | { | |
218 | int i; | |
219 | struct sas_ha_struct *sas_ha = &(isci_host->sas_ha); | |
220 | struct asd_sas_phy **sas_phys; | |
221 | struct asd_sas_port **sas_ports; | |
222 | ||
a86854d0 KC |
223 | sas_phys = devm_kcalloc(&isci_host->pdev->dev, |
224 | SCI_MAX_PHYS, sizeof(void *), | |
6f231dda DW |
225 | GFP_KERNEL); |
226 | if (!sas_phys) | |
227 | return -ENOMEM; | |
228 | ||
a86854d0 KC |
229 | sas_ports = devm_kcalloc(&isci_host->pdev->dev, |
230 | SCI_MAX_PORTS, sizeof(void *), | |
6f231dda DW |
231 | GFP_KERNEL); |
232 | if (!sas_ports) | |
233 | return -ENOMEM; | |
234 | ||
6f231dda | 235 | sas_ha->sas_ha_name = DRV_NAME; |
150fc6fc | 236 | sas_ha->sas_addr = &isci_host->phys[0].sas_addr[0]; |
6f231dda | 237 | |
6f231dda | 238 | for (i = 0; i < SCI_MAX_PHYS; i++) { |
e531381e | 239 | sas_phys[i] = &isci_host->phys[i].sas_phy; |
c132f692 | 240 | sas_ports[i] = &isci_host->sas_ports[i]; |
6f231dda DW |
241 | } |
242 | ||
243 | sas_ha->sas_phy = sas_phys; | |
244 | sas_ha->sas_port = sas_ports; | |
245 | sas_ha->num_phys = SCI_MAX_PHYS; | |
246 | ||
6f231dda DW |
247 | sas_ha->strict_wide_ports = 1; |
248 | ||
9a23ed57 | 249 | return sas_register_ha(sas_ha); |
6f231dda DW |
250 | } |
251 | ||
34cad85d DW |
252 | static void isci_unregister(struct isci_host *isci_host) |
253 | { | |
254 | struct Scsi_Host *shost; | |
255 | ||
6f231dda DW |
256 | if (!isci_host) |
257 | return; | |
258 | ||
4927f1fc | 259 | shost = to_shost(isci_host); |
34cad85d | 260 | sas_unregister_ha(&isci_host->sas_ha); |
6f231dda | 261 | |
d1dc5e2d | 262 | sas_remove_host(shost); |
d1dc5e2d | 263 | scsi_host_put(shost); |
6f231dda DW |
264 | } |
265 | ||
6f039790 | 266 | static int isci_pci_init(struct pci_dev *pdev) |
6f231dda | 267 | { |
cc3dbd0a | 268 | int err, bar_num, bar_mask = 0; |
6f231dda DW |
269 | void __iomem * const *iomap; |
270 | ||
271 | err = pcim_enable_device(pdev); | |
272 | if (err) { | |
273 | dev_err(&pdev->dev, | |
274 | "failed enable PCI device %s!\n", | |
275 | pci_name(pdev)); | |
276 | return err; | |
277 | } | |
278 | ||
279 | for (bar_num = 0; bar_num < SCI_PCI_BAR_COUNT; bar_num++) | |
280 | bar_mask |= 1 << (bar_num * 2); | |
281 | ||
282 | err = pcim_iomap_regions(pdev, bar_mask, DRV_NAME); | |
283 | if (err) | |
284 | return err; | |
285 | ||
286 | iomap = pcim_iomap_table(pdev); | |
287 | if (!iomap) | |
288 | return -ENOMEM; | |
289 | ||
290 | pci_set_master(pdev); | |
291 | ||
52f603fe CH |
292 | err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); |
293 | if (err) | |
294 | err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); | |
295 | return err; | |
6f231dda DW |
296 | } |
297 | ||
6f231dda DW |
298 | static int num_controllers(struct pci_dev *pdev) |
299 | { | |
300 | /* bar size alone can tell us if we are running with a dual controller | |
301 | * part, no need to trust revision ids that might be under broken firmware | |
302 | * control | |
303 | */ | |
304 | resource_size_t scu_bar_size = pci_resource_len(pdev, SCI_SCU_BAR*2); | |
305 | resource_size_t smu_bar_size = pci_resource_len(pdev, SCI_SMU_BAR*2); | |
f942f32e | 306 | |
6f231dda DW |
307 | if (scu_bar_size >= SCI_SCU_BAR_SIZE*SCI_MAX_CONTROLLERS && |
308 | smu_bar_size >= SCI_SMU_BAR_SIZE*SCI_MAX_CONTROLLERS) | |
309 | return SCI_MAX_CONTROLLERS; | |
310 | else | |
311 | return 1; | |
312 | } | |
313 | ||
314 | static int isci_setup_interrupts(struct pci_dev *pdev) | |
315 | { | |
316 | int err, i, num_msix; | |
31e824ed | 317 | struct isci_host *ihost; |
6f231dda DW |
318 | struct isci_pci_info *pci_info = to_pci_info(pdev); |
319 | ||
320 | /* | |
321 | * Determine the number of vectors associated with this | |
322 | * PCI function. | |
323 | */ | |
324 | num_msix = num_controllers(pdev) * SCI_NUM_MSI_X_INT; | |
325 | ||
e3cb0e47 CH |
326 | err = pci_alloc_irq_vectors(pdev, num_msix, num_msix, PCI_IRQ_MSIX); |
327 | if (err < 0) | |
6f231dda DW |
328 | goto intx; |
329 | ||
330 | for (i = 0; i < num_msix; i++) { | |
331 | int id = i / SCI_NUM_MSI_X_INT; | |
92f4f0f5 DW |
332 | irq_handler_t isr; |
333 | ||
31e824ed | 334 | ihost = pci_info->hosts[id]; |
92f4f0f5 DW |
335 | /* odd numbered vectors are error interrupts */ |
336 | if (i & 1) | |
337 | isr = isci_error_isr; | |
338 | else | |
339 | isr = isci_msix_isr; | |
6f231dda | 340 | |
e3cb0e47 CH |
341 | err = devm_request_irq(&pdev->dev, pci_irq_vector(pdev, i), |
342 | isr, 0, DRV_NAME"-msix", ihost); | |
6f231dda DW |
343 | if (!err) |
344 | continue; | |
345 | ||
346 | dev_info(&pdev->dev, "msix setup failed falling back to intx\n"); | |
347 | while (i--) { | |
348 | id = i / SCI_NUM_MSI_X_INT; | |
31e824ed | 349 | ihost = pci_info->hosts[id]; |
e3cb0e47 CH |
350 | devm_free_irq(&pdev->dev, pci_irq_vector(pdev, i), |
351 | ihost); | |
6f231dda | 352 | } |
e3cb0e47 | 353 | pci_free_irq_vectors(pdev); |
6f231dda DW |
354 | goto intx; |
355 | } | |
6f231dda DW |
356 | return 0; |
357 | ||
358 | intx: | |
31e824ed | 359 | for_each_isci_host(i, ihost, pdev) { |
e3cb0e47 CH |
360 | err = devm_request_irq(&pdev->dev, pci_irq_vector(pdev, 0), |
361 | isci_intx_isr, IRQF_SHARED, DRV_NAME"-intx", | |
362 | ihost); | |
31e824ed DW |
363 | if (err) |
364 | break; | |
365 | } | |
6f231dda DW |
366 | return err; |
367 | } | |
368 | ||
abec912d DW |
369 | static void isci_user_parameters_get(struct sci_user_parameters *u) |
370 | { | |
371 | int i; | |
372 | ||
373 | for (i = 0; i < SCI_MAX_PHYS; i++) { | |
374 | struct sci_phy_user_params *u_phy = &u->phys[i]; | |
375 | ||
376 | u_phy->max_speed_generation = phy_gen; | |
377 | ||
378 | /* we are not exporting these for now */ | |
379 | u_phy->align_insertion_frequency = 0x7f; | |
380 | u_phy->in_connection_align_insertion_frequency = 0xff; | |
381 | u_phy->notify_enable_spin_up_insertion_frequency = 0x33; | |
382 | } | |
383 | ||
384 | u->stp_inactivity_timeout = stp_inactive_to; | |
385 | u->ssp_inactivity_timeout = ssp_inactive_to; | |
386 | u->stp_max_occupancy_timeout = stp_max_occ_to; | |
387 | u->ssp_max_occupancy_timeout = ssp_max_occ_to; | |
388 | u->no_outbound_task_timeout = no_outbound_task_to; | |
389 | u->max_concurr_spinup = max_concurr_spinup; | |
390 | } | |
391 | ||
392 | static enum sci_status sci_user_parameters_set(struct isci_host *ihost, | |
393 | struct sci_user_parameters *sci_parms) | |
394 | { | |
395 | u16 index; | |
396 | ||
397 | /* | |
398 | * Validate the user parameters. If they are not legal, then | |
399 | * return a failure. | |
400 | */ | |
401 | for (index = 0; index < SCI_MAX_PHYS; index++) { | |
402 | struct sci_phy_user_params *u; | |
403 | ||
404 | u = &sci_parms->phys[index]; | |
405 | ||
406 | if (!((u->max_speed_generation <= SCIC_SDS_PARM_MAX_SPEED) && | |
407 | (u->max_speed_generation > SCIC_SDS_PARM_NO_SPEED))) | |
408 | return SCI_FAILURE_INVALID_PARAMETER_VALUE; | |
409 | ||
abec912d DW |
410 | if ((u->in_connection_align_insertion_frequency < 3) || |
411 | (u->align_insertion_frequency == 0) || | |
412 | (u->notify_enable_spin_up_insertion_frequency == 0)) | |
413 | return SCI_FAILURE_INVALID_PARAMETER_VALUE; | |
414 | } | |
415 | ||
416 | if ((sci_parms->stp_inactivity_timeout == 0) || | |
417 | (sci_parms->ssp_inactivity_timeout == 0) || | |
418 | (sci_parms->stp_max_occupancy_timeout == 0) || | |
419 | (sci_parms->ssp_max_occupancy_timeout == 0) || | |
420 | (sci_parms->no_outbound_task_timeout == 0)) | |
421 | return SCI_FAILURE_INVALID_PARAMETER_VALUE; | |
422 | ||
423 | memcpy(&ihost->user_parameters, sci_parms, sizeof(*sci_parms)); | |
424 | ||
425 | return SCI_SUCCESS; | |
426 | } | |
427 | ||
428 | static void sci_oem_defaults(struct isci_host *ihost) | |
429 | { | |
430 | /* these defaults are overridden by the platform / firmware */ | |
431 | struct sci_user_parameters *user = &ihost->user_parameters; | |
432 | struct sci_oem_params *oem = &ihost->oem_parameters; | |
433 | int i; | |
434 | ||
435 | /* Default to APC mode. */ | |
436 | oem->controller.mode_type = SCIC_PORT_AUTOMATIC_CONFIGURATION_MODE; | |
437 | ||
438 | /* Default to APC mode. */ | |
439 | oem->controller.max_concurr_spin_up = 1; | |
440 | ||
441 | /* Default to no SSC operation. */ | |
442 | oem->controller.do_enable_ssc = false; | |
443 | ||
444 | /* Default to short cables on all phys. */ | |
445 | oem->controller.cable_selection_mask = 0; | |
446 | ||
447 | /* Initialize all of the port parameter information to narrow ports. */ | |
448 | for (i = 0; i < SCI_MAX_PORTS; i++) | |
449 | oem->ports[i].phy_mask = 0; | |
450 | ||
451 | /* Initialize all of the phy parameter information. */ | |
452 | for (i = 0; i < SCI_MAX_PHYS; i++) { | |
453 | /* Default to 3G (i.e. Gen 2). */ | |
454 | user->phys[i].max_speed_generation = SCIC_SDS_PARM_GEN2_SPEED; | |
455 | ||
456 | /* the frequencies cannot be 0 */ | |
457 | user->phys[i].align_insertion_frequency = 0x7f; | |
458 | user->phys[i].in_connection_align_insertion_frequency = 0xff; | |
459 | user->phys[i].notify_enable_spin_up_insertion_frequency = 0x33; | |
460 | ||
461 | /* Previous Vitesse based expanders had a arbitration issue that | |
462 | * is worked around by having the upper 32-bits of SAS address | |
463 | * with a value greater then the Vitesse company identifier. | |
464 | * Hence, usage of 0x5FCFFFFF. | |
465 | */ | |
466 | oem->phys[i].sas_address.low = 0x1 + ihost->id; | |
467 | oem->phys[i].sas_address.high = 0x5FCFFFFF; | |
468 | } | |
469 | ||
470 | user->stp_inactivity_timeout = 5; | |
471 | user->ssp_inactivity_timeout = 5; | |
472 | user->stp_max_occupancy_timeout = 5; | |
473 | user->ssp_max_occupancy_timeout = 20; | |
474 | user->no_outbound_task_timeout = 2; | |
475 | } | |
476 | ||
6f231dda DW |
477 | static struct isci_host *isci_host_alloc(struct pci_dev *pdev, int id) |
478 | { | |
abec912d DW |
479 | struct isci_orom *orom = to_pci_info(pdev)->orom; |
480 | struct sci_user_parameters sci_user_params; | |
481 | u8 oem_version = ISCI_ROM_VER_1_0; | |
482 | struct isci_host *ihost; | |
6f231dda | 483 | struct Scsi_Host *shost; |
abec912d | 484 | int err, i; |
6f231dda | 485 | |
abec912d DW |
486 | ihost = devm_kzalloc(&pdev->dev, sizeof(*ihost), GFP_KERNEL); |
487 | if (!ihost) | |
488 | return NULL; | |
489 | ||
490 | ihost->pdev = pdev; | |
491 | ihost->id = id; | |
492 | spin_lock_init(&ihost->scic_lock); | |
493 | init_waitqueue_head(&ihost->eventq); | |
494 | ihost->sas_ha.dev = &ihost->pdev->dev; | |
495 | ihost->sas_ha.lldd_ha = ihost; | |
496 | tasklet_init(&ihost->completion_tasklet, | |
497 | isci_host_completion_routine, (unsigned long)ihost); | |
498 | ||
499 | /* validate module parameters */ | |
500 | /* TODO: kill struct sci_user_parameters and reference directly */ | |
501 | sci_oem_defaults(ihost); | |
502 | isci_user_parameters_get(&sci_user_params); | |
503 | if (sci_user_parameters_set(ihost, &sci_user_params)) { | |
504 | dev_warn(&pdev->dev, | |
505 | "%s: sci_user_parameters_set failed\n", __func__); | |
506 | return NULL; | |
507 | } | |
508 | ||
509 | /* sanity check platform (or 'firmware') oem parameters */ | |
510 | if (orom) { | |
511 | if (id < 0 || id >= SCI_MAX_CONTROLLERS || id > orom->hdr.num_elements) { | |
512 | dev_warn(&pdev->dev, "parsing firmware oem parameters failed\n"); | |
513 | return NULL; | |
514 | } | |
515 | ihost->oem_parameters = orom->ctrl[id]; | |
516 | oem_version = orom->hdr.version; | |
517 | } | |
518 | ||
519 | /* validate oem parameters (platform, firmware, or built-in defaults) */ | |
520 | if (sci_oem_parameters_validate(&ihost->oem_parameters, oem_version)) { | |
521 | dev_warn(&pdev->dev, "oem parameter validation failed\n"); | |
6f231dda | 522 | return NULL; |
abec912d DW |
523 | } |
524 | ||
abec912d DW |
525 | for (i = 0; i < SCI_MAX_PORTS; i++) { |
526 | struct isci_port *iport = &ihost->ports[i]; | |
527 | ||
528 | INIT_LIST_HEAD(&iport->remote_dev_list); | |
529 | iport->isci_host = ihost; | |
530 | } | |
6f231dda | 531 | |
abec912d DW |
532 | for (i = 0; i < SCI_MAX_PHYS; i++) |
533 | isci_phy_init(&ihost->phys[i], ihost, i); | |
534 | ||
535 | for (i = 0; i < SCI_MAX_REMOTE_DEVICES; i++) { | |
536 | struct isci_remote_device *idev = &ihost->devices[i]; | |
537 | ||
abec912d DW |
538 | INIT_LIST_HEAD(&idev->node); |
539 | } | |
6f231dda DW |
540 | |
541 | shost = scsi_host_alloc(&isci_sht, sizeof(void *)); | |
542 | if (!shost) | |
543 | return NULL; | |
6f231dda | 544 | |
9fee607f JS |
545 | dev_info(&pdev->dev, "%sSCU controller %d: phy 3-0 cables: " |
546 | "{%s, %s, %s, %s}\n", | |
abec912d DW |
547 | (is_cable_select_overridden() ? "* " : ""), ihost->id, |
548 | lookup_cable_names(decode_cable_selection(ihost, 3)), | |
549 | lookup_cable_names(decode_cable_selection(ihost, 2)), | |
550 | lookup_cable_names(decode_cable_selection(ihost, 1)), | |
551 | lookup_cable_names(decode_cable_selection(ihost, 0))); | |
9fee607f | 552 | |
abec912d | 553 | err = isci_host_init(ihost); |
6f231dda DW |
554 | if (err) |
555 | goto err_shost; | |
556 | ||
abec912d | 557 | SHOST_TO_SAS_HA(shost) = &ihost->sas_ha; |
1136a022 | 558 | ihost->sas_ha.shost = shost; |
6f231dda DW |
559 | shost->transportt = isci_transport_template; |
560 | ||
561 | shost->max_id = ~0; | |
562 | shost->max_lun = ~0; | |
563 | shost->max_cmd_len = MAX_COMMAND_SIZE; | |
564 | ||
cc29a1b0 LG |
565 | /* turn on DIF support */ |
566 | scsi_host_set_prot(shost, | |
567 | SHOST_DIF_TYPE1_PROTECTION | | |
568 | SHOST_DIF_TYPE2_PROTECTION | | |
569 | SHOST_DIF_TYPE3_PROTECTION); | |
570 | scsi_host_set_guard(shost, SHOST_DIX_GUARD_CRC); | |
571 | ||
6f231dda DW |
572 | err = scsi_add_host(shost, &pdev->dev); |
573 | if (err) | |
574 | goto err_shost; | |
575 | ||
abec912d | 576 | err = isci_register_sas_ha(ihost); |
6f231dda DW |
577 | if (err) |
578 | goto err_shost_remove; | |
579 | ||
abec912d | 580 | return ihost; |
6f231dda DW |
581 | |
582 | err_shost_remove: | |
583 | scsi_remove_host(shost); | |
584 | err_shost: | |
585 | scsi_host_put(shost); | |
586 | ||
587 | return NULL; | |
588 | } | |
589 | ||
6f039790 | 590 | static int isci_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) |
6f231dda DW |
591 | { |
592 | struct isci_pci_info *pci_info; | |
593 | int err, i; | |
594 | struct isci_host *isci_host; | |
858d4aa7 | 595 | const struct firmware *fw = NULL; |
d37ee7e8 | 596 | struct isci_orom *orom = NULL; |
4711ba10 | 597 | char *source = "(platform)"; |
6f231dda | 598 | |
dc00c8b6 DW |
599 | dev_info(&pdev->dev, "driver configured for rev: %d silicon\n", |
600 | pdev->revision); | |
6f231dda DW |
601 | |
602 | pci_info = devm_kzalloc(&pdev->dev, sizeof(*pci_info), GFP_KERNEL); | |
603 | if (!pci_info) | |
604 | return -ENOMEM; | |
605 | pci_set_drvdata(pdev, pci_info); | |
606 | ||
69f4cab1 | 607 | if (efi_rt_services_supported(EFI_RT_SUPPORTED_GET_VARIABLE)) |
8db37aab | 608 | orom = isci_get_efi_var(pdev); |
d37ee7e8 DW |
609 | |
610 | if (!orom) | |
d044af17 DW |
611 | orom = isci_request_oprom(pdev); |
612 | ||
fc25f79a | 613 | for (i = 0; orom && i < num_controllers(pdev); i++) { |
594e566a DJ |
614 | if (sci_oem_parameters_validate(&orom->ctrl[i], |
615 | orom->hdr.version)) { | |
2d70de5a DW |
616 | dev_warn(&pdev->dev, |
617 | "[%d]: invalid oem parameters detected, falling back to firmware\n", i); | |
2d70de5a DW |
618 | orom = NULL; |
619 | break; | |
620 | } | |
621 | } | |
622 | ||
d044af17 | 623 | if (!orom) { |
4711ba10 | 624 | source = "(firmware)"; |
d044af17 DW |
625 | orom = isci_request_firmware(pdev, fw); |
626 | if (!orom) { | |
627 | /* TODO convert this to WARN_TAINT_ONCE once the | |
628 | * orom/efi parameter support is widely available | |
629 | */ | |
630 | dev_warn(&pdev->dev, | |
631 | "Loading user firmware failed, using default " | |
632 | "values\n"); | |
633 | dev_warn(&pdev->dev, | |
634 | "Default OEM configuration being used: 4 " | |
635 | "narrow ports, and default SAS Addresses\n"); | |
858d4aa7 | 636 | } |
858d4aa7 DJ |
637 | } |
638 | ||
d044af17 | 639 | if (orom) |
3b67c1f3 | 640 | dev_info(&pdev->dev, |
4711ba10 | 641 | "OEM SAS parameters (version: %u.%u) loaded %s\n", |
3b67c1f3 | 642 | (orom->hdr.version & 0xf0) >> 4, |
4711ba10 | 643 | (orom->hdr.version & 0xf), source); |
3b67c1f3 | 644 | |
d044af17 DW |
645 | pci_info->orom = orom; |
646 | ||
6f231dda DW |
647 | err = isci_pci_init(pdev); |
648 | if (err) | |
649 | return err; | |
650 | ||
651 | for (i = 0; i < num_controllers(pdev); i++) { | |
652 | struct isci_host *h = isci_host_alloc(pdev, i); | |
653 | ||
654 | if (!h) { | |
655 | err = -ENOMEM; | |
656 | goto err_host_alloc; | |
657 | } | |
b329aff1 | 658 | pci_info->hosts[i] = h; |
6f231dda DW |
659 | } |
660 | ||
661 | err = isci_setup_interrupts(pdev); | |
662 | if (err) | |
663 | goto err_host_alloc; | |
664 | ||
b329aff1 | 665 | for_each_isci_host(i, isci_host, pdev) |
d1dc5e2d | 666 | scsi_scan_host(to_shost(isci_host)); |
6f231dda DW |
667 | |
668 | return 0; | |
669 | ||
670 | err_host_alloc: | |
b329aff1 | 671 | for_each_isci_host(i, isci_host, pdev) |
34cad85d | 672 | isci_unregister(isci_host); |
6f231dda DW |
673 | return err; |
674 | } | |
675 | ||
6f039790 | 676 | static void isci_pci_remove(struct pci_dev *pdev) |
6f231dda | 677 | { |
d9dcb4ba | 678 | struct isci_host *ihost; |
b329aff1 | 679 | int i; |
6f231dda | 680 | |
d9dcb4ba | 681 | for_each_isci_host(i, ihost, pdev) { |
13de2c54 | 682 | wait_for_start(ihost); |
d9dcb4ba DW |
683 | isci_unregister(ihost); |
684 | isci_host_deinit(ihost); | |
6f231dda DW |
685 | } |
686 | } | |
687 | ||
4eeb587e | 688 | #ifdef CONFIG_PM_SLEEP |
e468dc11 AW |
689 | static int isci_suspend(struct device *dev) |
690 | { | |
691 | struct pci_dev *pdev = to_pci_dev(dev); | |
692 | struct isci_host *ihost; | |
693 | int i; | |
694 | ||
695 | for_each_isci_host(i, ihost, pdev) { | |
696 | sas_suspend_ha(&ihost->sas_ha); | |
697 | isci_host_deinit(ihost); | |
698 | } | |
699 | ||
e468dc11 AW |
700 | return 0; |
701 | } | |
702 | ||
703 | static int isci_resume(struct device *dev) | |
704 | { | |
705 | struct pci_dev *pdev = to_pci_dev(dev); | |
706 | struct isci_host *ihost; | |
44ff81f2 | 707 | int i; |
e468dc11 AW |
708 | |
709 | for_each_isci_host(i, ihost, pdev) { | |
710 | sas_prep_resume_ha(&ihost->sas_ha); | |
711 | ||
712 | isci_host_init(ihost); | |
1136a022 | 713 | isci_host_start(ihost->sas_ha.shost); |
e468dc11 AW |
714 | wait_for_start(ihost); |
715 | ||
716 | sas_resume_ha(&ihost->sas_ha); | |
717 | } | |
718 | ||
719 | return 0; | |
720 | } | |
4eeb587e | 721 | #endif |
e468dc11 AW |
722 | |
723 | static SIMPLE_DEV_PM_OPS(isci_pm_ops, isci_suspend, isci_resume); | |
e468dc11 | 724 | |
f942f32e DW |
725 | static struct pci_driver isci_pci_driver = { |
726 | .name = DRV_NAME, | |
727 | .id_table = isci_id_table, | |
728 | .probe = isci_pci_probe, | |
6f039790 | 729 | .remove = isci_pci_remove, |
e468dc11 | 730 | .driver.pm = &isci_pm_ops, |
f942f32e DW |
731 | }; |
732 | ||
6f231dda DW |
733 | static __init int isci_init(void) |
734 | { | |
d9c37390 | 735 | int err; |
6f231dda | 736 | |
98e2a5a3 DW |
737 | pr_info("%s: Intel(R) C600 SAS Controller Driver - version %s\n", |
738 | DRV_NAME, DRV_VERSION); | |
6f231dda | 739 | |
6f231dda DW |
740 | isci_transport_template = sas_domain_attach_transport(&isci_transport_ops); |
741 | if (!isci_transport_template) | |
d9c37390 | 742 | return -ENOMEM; |
6f231dda DW |
743 | |
744 | err = pci_register_driver(&isci_pci_driver); | |
745 | if (err) | |
d9c37390 | 746 | sas_release_transport(isci_transport_template); |
6f231dda DW |
747 | |
748 | return err; | |
749 | } | |
750 | ||
751 | static __exit void isci_exit(void) | |
752 | { | |
753 | pci_unregister_driver(&isci_pci_driver); | |
754 | sas_release_transport(isci_transport_template); | |
6f231dda DW |
755 | } |
756 | ||
95f8bf93 | 757 | MODULE_DESCRIPTION("Intel(R) C600 Series Chipset SAS Controller driver"); |
6f231dda DW |
758 | MODULE_LICENSE("Dual BSD/GPL"); |
759 | MODULE_FIRMWARE(ISCI_FW_NAME); | |
760 | module_init(isci_init); | |
761 | module_exit(isci_exit); |