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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 | |
98e2a5a3 | 68 | #define MAJ 1 |
d3fd2e2b | 69 | #define MIN 1 |
98e2a5a3 DW |
70 | #define BUILD 0 |
71 | #define DRV_VERSION __stringify(MAJ) "." __stringify(MIN) "." \ | |
72 | __stringify(BUILD) | |
73 | ||
74 | MODULE_VERSION(DRV_VERSION); | |
75 | ||
6f231dda | 76 | static struct scsi_transport_template *isci_transport_template; |
6f231dda DW |
77 | |
78 | static DEFINE_PCI_DEVICE_TABLE(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 | ||
6f231dda DW |
94 | MODULE_DEVICE_TABLE(pci, isci_id_table); |
95 | ||
6f231dda | 96 | /* linux isci specific settings */ |
6f231dda | 97 | |
6024d38b | 98 | unsigned char no_outbound_task_to = 2; |
b5f18a20 DJ |
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 | ||
be168a3b | 118 | unsigned char phy_gen = SCIC_SDS_PARM_GEN2_SPEED; |
b5f18a20 DJ |
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 | ||
7000f7c7 | 122 | unsigned char max_concurr_spinup; |
b5f18a20 DJ |
123 | module_param(max_concurr_spinup, byte, 0); |
124 | MODULE_PARM_DESC(max_concurr_spinup, "Max concurrent device spinup"); | |
125 | ||
9fee607f JS |
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 | ||
3a7bda83 DJ |
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 | ||
6f231dda DW |
150 | static struct scsi_host_template isci_sht = { |
151 | ||
152 | .module = THIS_MODULE, | |
153 | .name = DRV_NAME, | |
92cd5115 | 154 | .proc_name = DRV_NAME, |
6f231dda DW |
155 | .queuecommand = sas_queuecommand, |
156 | .target_alloc = sas_target_alloc, | |
157 | .slave_configure = sas_slave_configure, | |
6f231dda DW |
158 | .scan_finished = isci_host_scan_finished, |
159 | .scan_start = isci_host_scan_start, | |
160 | .change_queue_depth = sas_change_queue_depth, | |
161 | .change_queue_type = sas_change_queue_type, | |
162 | .bios_param = sas_bios_param, | |
163 | .can_queue = ISCI_CAN_QUEUE_VAL, | |
164 | .cmd_per_lun = 1, | |
165 | .this_id = -1, | |
166 | .sg_tablesize = SG_ALL, | |
167 | .max_sectors = SCSI_DEFAULT_MAX_SECTORS, | |
168 | .use_clustering = ENABLE_CLUSTERING, | |
6f231dda DW |
169 | .target_destroy = sas_target_destroy, |
170 | .ioctl = sas_ioctl, | |
3a7bda83 | 171 | .shost_attrs = isci_host_attrs, |
6f231dda DW |
172 | }; |
173 | ||
174 | static struct sas_domain_function_template isci_transport_ops = { | |
175 | ||
176 | /* The class calls these to notify the LLDD of an event. */ | |
177 | .lldd_port_formed = isci_port_formed, | |
178 | .lldd_port_deformed = isci_port_deformed, | |
179 | ||
180 | /* The class calls these when a device is found or gone. */ | |
181 | .lldd_dev_found = isci_remote_device_found, | |
182 | .lldd_dev_gone = isci_remote_device_gone, | |
183 | ||
184 | .lldd_execute_task = isci_task_execute_task, | |
185 | /* Task Management Functions. Must be called from process context. */ | |
186 | .lldd_abort_task = isci_task_abort_task, | |
187 | .lldd_abort_task_set = isci_task_abort_task_set, | |
188 | .lldd_clear_aca = isci_task_clear_aca, | |
189 | .lldd_clear_task_set = isci_task_clear_task_set, | |
190 | .lldd_I_T_nexus_reset = isci_task_I_T_nexus_reset, | |
191 | .lldd_lu_reset = isci_task_lu_reset, | |
192 | .lldd_query_task = isci_task_query_task, | |
193 | ||
687833a0 DW |
194 | /* ata recovery called from ata-eh */ |
195 | .lldd_ata_check_ready = isci_ata_check_ready, | |
196 | ||
6f231dda DW |
197 | /* Port and Adapter management */ |
198 | .lldd_clear_nexus_port = isci_task_clear_nexus_port, | |
199 | .lldd_clear_nexus_ha = isci_task_clear_nexus_ha, | |
200 | ||
201 | /* Phy management */ | |
202 | .lldd_control_phy = isci_phy_control, | |
ad4f4c1d DW |
203 | |
204 | /* GPIO support */ | |
205 | .lldd_write_gpio = isci_gpio_write, | |
6f231dda DW |
206 | }; |
207 | ||
208 | ||
209 | /****************************************************************************** | |
210 | * P R O T E C T E D M E T H O D S | |
211 | ******************************************************************************/ | |
212 | ||
213 | ||
214 | ||
215 | /** | |
216 | * isci_register_sas_ha() - This method initializes various lldd | |
217 | * specific members of the sas_ha struct and calls the libsas | |
218 | * sas_register_ha() function. | |
219 | * @isci_host: This parameter specifies the lldd specific wrapper for the | |
220 | * libsas sas_ha struct. | |
221 | * | |
4907cb7b | 222 | * This method returns an error code indicating success or failure. The user |
6f231dda DW |
223 | * should check for possible memory allocation error return otherwise, a zero |
224 | * indicates success. | |
225 | */ | |
226 | static int isci_register_sas_ha(struct isci_host *isci_host) | |
227 | { | |
228 | int i; | |
229 | struct sas_ha_struct *sas_ha = &(isci_host->sas_ha); | |
230 | struct asd_sas_phy **sas_phys; | |
231 | struct asd_sas_port **sas_ports; | |
232 | ||
233 | sas_phys = devm_kzalloc(&isci_host->pdev->dev, | |
234 | SCI_MAX_PHYS * sizeof(void *), | |
235 | GFP_KERNEL); | |
236 | if (!sas_phys) | |
237 | return -ENOMEM; | |
238 | ||
239 | sas_ports = devm_kzalloc(&isci_host->pdev->dev, | |
240 | SCI_MAX_PORTS * sizeof(void *), | |
241 | GFP_KERNEL); | |
242 | if (!sas_ports) | |
243 | return -ENOMEM; | |
244 | ||
6f231dda DW |
245 | sas_ha->sas_ha_name = DRV_NAME; |
246 | sas_ha->lldd_module = THIS_MODULE; | |
150fc6fc | 247 | sas_ha->sas_addr = &isci_host->phys[0].sas_addr[0]; |
6f231dda | 248 | |
6f231dda | 249 | for (i = 0; i < SCI_MAX_PHYS; i++) { |
e531381e | 250 | sas_phys[i] = &isci_host->phys[i].sas_phy; |
c132f692 | 251 | sas_ports[i] = &isci_host->sas_ports[i]; |
6f231dda DW |
252 | } |
253 | ||
254 | sas_ha->sas_phy = sas_phys; | |
255 | sas_ha->sas_port = sas_ports; | |
256 | sas_ha->num_phys = SCI_MAX_PHYS; | |
257 | ||
258 | sas_ha->lldd_queue_size = ISCI_CAN_QUEUE_VAL; | |
259 | sas_ha->lldd_max_execute_num = 1; | |
260 | sas_ha->strict_wide_ports = 1; | |
261 | ||
262 | sas_register_ha(sas_ha); | |
263 | ||
264 | return 0; | |
265 | } | |
266 | ||
34cad85d DW |
267 | static void isci_unregister(struct isci_host *isci_host) |
268 | { | |
269 | struct Scsi_Host *shost; | |
270 | ||
6f231dda DW |
271 | if (!isci_host) |
272 | return; | |
273 | ||
34cad85d | 274 | sas_unregister_ha(&isci_host->sas_ha); |
6f231dda | 275 | |
d1dc5e2d DW |
276 | shost = to_shost(isci_host); |
277 | sas_remove_host(shost); | |
278 | scsi_remove_host(shost); | |
279 | scsi_host_put(shost); | |
6f231dda DW |
280 | } |
281 | ||
282 | static int __devinit isci_pci_init(struct pci_dev *pdev) | |
283 | { | |
cc3dbd0a | 284 | int err, bar_num, bar_mask = 0; |
6f231dda DW |
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 | ||
6f231dda DW |
325 | static 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); | |
f942f32e | 333 | |
6f231dda DW |
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 | ||
341 | static int isci_setup_interrupts(struct pci_dev *pdev) | |
342 | { | |
343 | int err, i, num_msix; | |
31e824ed | 344 | struct isci_host *ihost; |
6f231dda DW |
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 | for (i = 0; i < num_msix; i++) | |
354 | pci_info->msix_entries[i].entry = i; | |
355 | ||
356 | err = pci_enable_msix(pdev, pci_info->msix_entries, num_msix); | |
357 | if (err) | |
358 | goto intx; | |
359 | ||
360 | for (i = 0; i < num_msix; i++) { | |
361 | int id = i / SCI_NUM_MSI_X_INT; | |
362 | struct msix_entry *msix = &pci_info->msix_entries[i]; | |
92f4f0f5 DW |
363 | irq_handler_t isr; |
364 | ||
31e824ed | 365 | ihost = pci_info->hosts[id]; |
92f4f0f5 DW |
366 | /* odd numbered vectors are error interrupts */ |
367 | if (i & 1) | |
368 | isr = isci_error_isr; | |
369 | else | |
370 | isr = isci_msix_isr; | |
6f231dda | 371 | |
92f4f0f5 | 372 | err = devm_request_irq(&pdev->dev, msix->vector, isr, 0, |
31e824ed | 373 | DRV_NAME"-msix", ihost); |
6f231dda DW |
374 | if (!err) |
375 | continue; | |
376 | ||
377 | dev_info(&pdev->dev, "msix setup failed falling back to intx\n"); | |
378 | while (i--) { | |
379 | id = i / SCI_NUM_MSI_X_INT; | |
31e824ed | 380 | ihost = pci_info->hosts[id]; |
6f231dda | 381 | msix = &pci_info->msix_entries[i]; |
31e824ed | 382 | devm_free_irq(&pdev->dev, msix->vector, ihost); |
6f231dda DW |
383 | } |
384 | pci_disable_msix(pdev); | |
385 | goto intx; | |
386 | } | |
6f231dda DW |
387 | return 0; |
388 | ||
389 | intx: | |
31e824ed DW |
390 | for_each_isci_host(i, ihost, pdev) { |
391 | err = devm_request_irq(&pdev->dev, pdev->irq, isci_intx_isr, | |
392 | IRQF_SHARED, DRV_NAME"-intx", ihost); | |
393 | if (err) | |
394 | break; | |
395 | } | |
6f231dda DW |
396 | return err; |
397 | } | |
398 | ||
abec912d DW |
399 | static void isci_user_parameters_get(struct sci_user_parameters *u) |
400 | { | |
401 | int i; | |
402 | ||
403 | for (i = 0; i < SCI_MAX_PHYS; i++) { | |
404 | struct sci_phy_user_params *u_phy = &u->phys[i]; | |
405 | ||
406 | u_phy->max_speed_generation = phy_gen; | |
407 | ||
408 | /* we are not exporting these for now */ | |
409 | u_phy->align_insertion_frequency = 0x7f; | |
410 | u_phy->in_connection_align_insertion_frequency = 0xff; | |
411 | u_phy->notify_enable_spin_up_insertion_frequency = 0x33; | |
412 | } | |
413 | ||
414 | u->stp_inactivity_timeout = stp_inactive_to; | |
415 | u->ssp_inactivity_timeout = ssp_inactive_to; | |
416 | u->stp_max_occupancy_timeout = stp_max_occ_to; | |
417 | u->ssp_max_occupancy_timeout = ssp_max_occ_to; | |
418 | u->no_outbound_task_timeout = no_outbound_task_to; | |
419 | u->max_concurr_spinup = max_concurr_spinup; | |
420 | } | |
421 | ||
422 | static enum sci_status sci_user_parameters_set(struct isci_host *ihost, | |
423 | struct sci_user_parameters *sci_parms) | |
424 | { | |
425 | u16 index; | |
426 | ||
427 | /* | |
428 | * Validate the user parameters. If they are not legal, then | |
429 | * return a failure. | |
430 | */ | |
431 | for (index = 0; index < SCI_MAX_PHYS; index++) { | |
432 | struct sci_phy_user_params *u; | |
433 | ||
434 | u = &sci_parms->phys[index]; | |
435 | ||
436 | if (!((u->max_speed_generation <= SCIC_SDS_PARM_MAX_SPEED) && | |
437 | (u->max_speed_generation > SCIC_SDS_PARM_NO_SPEED))) | |
438 | return SCI_FAILURE_INVALID_PARAMETER_VALUE; | |
439 | ||
440 | if (u->in_connection_align_insertion_frequency < 3) | |
441 | return SCI_FAILURE_INVALID_PARAMETER_VALUE; | |
442 | ||
443 | if ((u->in_connection_align_insertion_frequency < 3) || | |
444 | (u->align_insertion_frequency == 0) || | |
445 | (u->notify_enable_spin_up_insertion_frequency == 0)) | |
446 | return SCI_FAILURE_INVALID_PARAMETER_VALUE; | |
447 | } | |
448 | ||
449 | if ((sci_parms->stp_inactivity_timeout == 0) || | |
450 | (sci_parms->ssp_inactivity_timeout == 0) || | |
451 | (sci_parms->stp_max_occupancy_timeout == 0) || | |
452 | (sci_parms->ssp_max_occupancy_timeout == 0) || | |
453 | (sci_parms->no_outbound_task_timeout == 0)) | |
454 | return SCI_FAILURE_INVALID_PARAMETER_VALUE; | |
455 | ||
456 | memcpy(&ihost->user_parameters, sci_parms, sizeof(*sci_parms)); | |
457 | ||
458 | return SCI_SUCCESS; | |
459 | } | |
460 | ||
461 | static void sci_oem_defaults(struct isci_host *ihost) | |
462 | { | |
463 | /* these defaults are overridden by the platform / firmware */ | |
464 | struct sci_user_parameters *user = &ihost->user_parameters; | |
465 | struct sci_oem_params *oem = &ihost->oem_parameters; | |
466 | int i; | |
467 | ||
468 | /* Default to APC mode. */ | |
469 | oem->controller.mode_type = SCIC_PORT_AUTOMATIC_CONFIGURATION_MODE; | |
470 | ||
471 | /* Default to APC mode. */ | |
472 | oem->controller.max_concurr_spin_up = 1; | |
473 | ||
474 | /* Default to no SSC operation. */ | |
475 | oem->controller.do_enable_ssc = false; | |
476 | ||
477 | /* Default to short cables on all phys. */ | |
478 | oem->controller.cable_selection_mask = 0; | |
479 | ||
480 | /* Initialize all of the port parameter information to narrow ports. */ | |
481 | for (i = 0; i < SCI_MAX_PORTS; i++) | |
482 | oem->ports[i].phy_mask = 0; | |
483 | ||
484 | /* Initialize all of the phy parameter information. */ | |
485 | for (i = 0; i < SCI_MAX_PHYS; i++) { | |
486 | /* Default to 3G (i.e. Gen 2). */ | |
487 | user->phys[i].max_speed_generation = SCIC_SDS_PARM_GEN2_SPEED; | |
488 | ||
489 | /* the frequencies cannot be 0 */ | |
490 | user->phys[i].align_insertion_frequency = 0x7f; | |
491 | user->phys[i].in_connection_align_insertion_frequency = 0xff; | |
492 | user->phys[i].notify_enable_spin_up_insertion_frequency = 0x33; | |
493 | ||
494 | /* Previous Vitesse based expanders had a arbitration issue that | |
495 | * is worked around by having the upper 32-bits of SAS address | |
496 | * with a value greater then the Vitesse company identifier. | |
497 | * Hence, usage of 0x5FCFFFFF. | |
498 | */ | |
499 | oem->phys[i].sas_address.low = 0x1 + ihost->id; | |
500 | oem->phys[i].sas_address.high = 0x5FCFFFFF; | |
501 | } | |
502 | ||
503 | user->stp_inactivity_timeout = 5; | |
504 | user->ssp_inactivity_timeout = 5; | |
505 | user->stp_max_occupancy_timeout = 5; | |
506 | user->ssp_max_occupancy_timeout = 20; | |
507 | user->no_outbound_task_timeout = 2; | |
508 | } | |
509 | ||
6f231dda DW |
510 | static struct isci_host *isci_host_alloc(struct pci_dev *pdev, int id) |
511 | { | |
abec912d DW |
512 | struct isci_orom *orom = to_pci_info(pdev)->orom; |
513 | struct sci_user_parameters sci_user_params; | |
514 | u8 oem_version = ISCI_ROM_VER_1_0; | |
515 | struct isci_host *ihost; | |
6f231dda | 516 | struct Scsi_Host *shost; |
abec912d | 517 | int err, i; |
6f231dda | 518 | |
abec912d DW |
519 | ihost = devm_kzalloc(&pdev->dev, sizeof(*ihost), GFP_KERNEL); |
520 | if (!ihost) | |
521 | return NULL; | |
522 | ||
523 | ihost->pdev = pdev; | |
524 | ihost->id = id; | |
525 | spin_lock_init(&ihost->scic_lock); | |
526 | init_waitqueue_head(&ihost->eventq); | |
527 | ihost->sas_ha.dev = &ihost->pdev->dev; | |
528 | ihost->sas_ha.lldd_ha = ihost; | |
529 | tasklet_init(&ihost->completion_tasklet, | |
530 | isci_host_completion_routine, (unsigned long)ihost); | |
531 | ||
532 | /* validate module parameters */ | |
533 | /* TODO: kill struct sci_user_parameters and reference directly */ | |
534 | sci_oem_defaults(ihost); | |
535 | isci_user_parameters_get(&sci_user_params); | |
536 | if (sci_user_parameters_set(ihost, &sci_user_params)) { | |
537 | dev_warn(&pdev->dev, | |
538 | "%s: sci_user_parameters_set failed\n", __func__); | |
539 | return NULL; | |
540 | } | |
541 | ||
542 | /* sanity check platform (or 'firmware') oem parameters */ | |
543 | if (orom) { | |
544 | if (id < 0 || id >= SCI_MAX_CONTROLLERS || id > orom->hdr.num_elements) { | |
545 | dev_warn(&pdev->dev, "parsing firmware oem parameters failed\n"); | |
546 | return NULL; | |
547 | } | |
548 | ihost->oem_parameters = orom->ctrl[id]; | |
549 | oem_version = orom->hdr.version; | |
550 | } | |
551 | ||
552 | /* validate oem parameters (platform, firmware, or built-in defaults) */ | |
553 | if (sci_oem_parameters_validate(&ihost->oem_parameters, oem_version)) { | |
554 | dev_warn(&pdev->dev, "oem parameter validation failed\n"); | |
6f231dda | 555 | return NULL; |
abec912d DW |
556 | } |
557 | ||
abec912d DW |
558 | for (i = 0; i < SCI_MAX_PORTS; i++) { |
559 | struct isci_port *iport = &ihost->ports[i]; | |
560 | ||
561 | INIT_LIST_HEAD(&iport->remote_dev_list); | |
562 | iport->isci_host = ihost; | |
563 | } | |
6f231dda | 564 | |
abec912d DW |
565 | for (i = 0; i < SCI_MAX_PHYS; i++) |
566 | isci_phy_init(&ihost->phys[i], ihost, i); | |
567 | ||
568 | for (i = 0; i < SCI_MAX_REMOTE_DEVICES; i++) { | |
569 | struct isci_remote_device *idev = &ihost->devices[i]; | |
570 | ||
abec912d DW |
571 | INIT_LIST_HEAD(&idev->node); |
572 | } | |
6f231dda DW |
573 | |
574 | shost = scsi_host_alloc(&isci_sht, sizeof(void *)); | |
575 | if (!shost) | |
576 | return NULL; | |
6f231dda | 577 | |
9fee607f JS |
578 | dev_info(&pdev->dev, "%sSCU controller %d: phy 3-0 cables: " |
579 | "{%s, %s, %s, %s}\n", | |
abec912d DW |
580 | (is_cable_select_overridden() ? "* " : ""), ihost->id, |
581 | lookup_cable_names(decode_cable_selection(ihost, 3)), | |
582 | lookup_cable_names(decode_cable_selection(ihost, 2)), | |
583 | lookup_cable_names(decode_cable_selection(ihost, 1)), | |
584 | lookup_cable_names(decode_cable_selection(ihost, 0))); | |
9fee607f | 585 | |
abec912d | 586 | err = isci_host_init(ihost); |
6f231dda DW |
587 | if (err) |
588 | goto err_shost; | |
589 | ||
abec912d DW |
590 | SHOST_TO_SAS_HA(shost) = &ihost->sas_ha; |
591 | ihost->sas_ha.core.shost = shost; | |
6f231dda DW |
592 | shost->transportt = isci_transport_template; |
593 | ||
594 | shost->max_id = ~0; | |
595 | shost->max_lun = ~0; | |
596 | shost->max_cmd_len = MAX_COMMAND_SIZE; | |
597 | ||
598 | err = scsi_add_host(shost, &pdev->dev); | |
599 | if (err) | |
600 | goto err_shost; | |
601 | ||
abec912d | 602 | err = isci_register_sas_ha(ihost); |
6f231dda DW |
603 | if (err) |
604 | goto err_shost_remove; | |
605 | ||
abec912d | 606 | return ihost; |
6f231dda DW |
607 | |
608 | err_shost_remove: | |
609 | scsi_remove_host(shost); | |
610 | err_shost: | |
611 | scsi_host_put(shost); | |
612 | ||
613 | return NULL; | |
614 | } | |
615 | ||
6f231dda DW |
616 | static int __devinit isci_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id) |
617 | { | |
618 | struct isci_pci_info *pci_info; | |
619 | int err, i; | |
620 | struct isci_host *isci_host; | |
858d4aa7 | 621 | const struct firmware *fw = NULL; |
d37ee7e8 | 622 | struct isci_orom *orom = NULL; |
4711ba10 | 623 | char *source = "(platform)"; |
6f231dda | 624 | |
dc00c8b6 DW |
625 | dev_info(&pdev->dev, "driver configured for rev: %d silicon\n", |
626 | pdev->revision); | |
6f231dda DW |
627 | |
628 | pci_info = devm_kzalloc(&pdev->dev, sizeof(*pci_info), GFP_KERNEL); | |
629 | if (!pci_info) | |
630 | return -ENOMEM; | |
631 | pci_set_drvdata(pdev, pci_info); | |
632 | ||
8db37aab DJ |
633 | if (efi_enabled) |
634 | orom = isci_get_efi_var(pdev); | |
d37ee7e8 DW |
635 | |
636 | if (!orom) | |
d044af17 DW |
637 | orom = isci_request_oprom(pdev); |
638 | ||
fc25f79a | 639 | for (i = 0; orom && i < num_controllers(pdev); i++) { |
594e566a DJ |
640 | if (sci_oem_parameters_validate(&orom->ctrl[i], |
641 | orom->hdr.version)) { | |
2d70de5a DW |
642 | dev_warn(&pdev->dev, |
643 | "[%d]: invalid oem parameters detected, falling back to firmware\n", i); | |
644 | devm_kfree(&pdev->dev, orom); | |
645 | orom = NULL; | |
646 | break; | |
647 | } | |
648 | } | |
649 | ||
d044af17 | 650 | if (!orom) { |
4711ba10 | 651 | source = "(firmware)"; |
d044af17 DW |
652 | orom = isci_request_firmware(pdev, fw); |
653 | if (!orom) { | |
654 | /* TODO convert this to WARN_TAINT_ONCE once the | |
655 | * orom/efi parameter support is widely available | |
656 | */ | |
657 | dev_warn(&pdev->dev, | |
658 | "Loading user firmware failed, using default " | |
659 | "values\n"); | |
660 | dev_warn(&pdev->dev, | |
661 | "Default OEM configuration being used: 4 " | |
662 | "narrow ports, and default SAS Addresses\n"); | |
858d4aa7 | 663 | } |
858d4aa7 DJ |
664 | } |
665 | ||
d044af17 | 666 | if (orom) |
3b67c1f3 | 667 | dev_info(&pdev->dev, |
4711ba10 | 668 | "OEM SAS parameters (version: %u.%u) loaded %s\n", |
3b67c1f3 | 669 | (orom->hdr.version & 0xf0) >> 4, |
4711ba10 | 670 | (orom->hdr.version & 0xf), source); |
3b67c1f3 | 671 | |
d044af17 DW |
672 | pci_info->orom = orom; |
673 | ||
6f231dda DW |
674 | err = isci_pci_init(pdev); |
675 | if (err) | |
676 | return err; | |
677 | ||
678 | for (i = 0; i < num_controllers(pdev); i++) { | |
679 | struct isci_host *h = isci_host_alloc(pdev, i); | |
680 | ||
681 | if (!h) { | |
682 | err = -ENOMEM; | |
683 | goto err_host_alloc; | |
684 | } | |
b329aff1 | 685 | pci_info->hosts[i] = h; |
3d2d7525 DJ |
686 | |
687 | /* turn on DIF support */ | |
d1dc5e2d | 688 | scsi_host_set_prot(to_shost(h), |
3d2d7525 DJ |
689 | SHOST_DIF_TYPE1_PROTECTION | |
690 | SHOST_DIF_TYPE2_PROTECTION | | |
691 | SHOST_DIF_TYPE3_PROTECTION); | |
d1dc5e2d | 692 | scsi_host_set_guard(to_shost(h), SHOST_DIX_GUARD_CRC); |
6f231dda DW |
693 | } |
694 | ||
695 | err = isci_setup_interrupts(pdev); | |
696 | if (err) | |
697 | goto err_host_alloc; | |
698 | ||
b329aff1 | 699 | for_each_isci_host(i, isci_host, pdev) |
d1dc5e2d | 700 | scsi_scan_host(to_shost(isci_host)); |
6f231dda DW |
701 | |
702 | return 0; | |
703 | ||
704 | err_host_alloc: | |
b329aff1 | 705 | for_each_isci_host(i, isci_host, pdev) |
34cad85d | 706 | isci_unregister(isci_host); |
6f231dda DW |
707 | return err; |
708 | } | |
709 | ||
710 | static void __devexit isci_pci_remove(struct pci_dev *pdev) | |
711 | { | |
d9dcb4ba | 712 | struct isci_host *ihost; |
b329aff1 | 713 | int i; |
6f231dda | 714 | |
d9dcb4ba | 715 | for_each_isci_host(i, ihost, pdev) { |
13de2c54 | 716 | wait_for_start(ihost); |
d9dcb4ba DW |
717 | isci_unregister(ihost); |
718 | isci_host_deinit(ihost); | |
6f231dda DW |
719 | } |
720 | } | |
721 | ||
f942f32e DW |
722 | static struct pci_driver isci_pci_driver = { |
723 | .name = DRV_NAME, | |
724 | .id_table = isci_id_table, | |
725 | .probe = isci_pci_probe, | |
726 | .remove = __devexit_p(isci_pci_remove), | |
727 | }; | |
728 | ||
6f231dda DW |
729 | static __init int isci_init(void) |
730 | { | |
d9c37390 | 731 | int err; |
6f231dda | 732 | |
98e2a5a3 DW |
733 | pr_info("%s: Intel(R) C600 SAS Controller Driver - version %s\n", |
734 | DRV_NAME, DRV_VERSION); | |
6f231dda | 735 | |
6f231dda DW |
736 | isci_transport_template = sas_domain_attach_transport(&isci_transport_ops); |
737 | if (!isci_transport_template) | |
d9c37390 | 738 | return -ENOMEM; |
6f231dda DW |
739 | |
740 | err = pci_register_driver(&isci_pci_driver); | |
741 | if (err) | |
d9c37390 | 742 | sas_release_transport(isci_transport_template); |
6f231dda DW |
743 | |
744 | return err; | |
745 | } | |
746 | ||
747 | static __exit void isci_exit(void) | |
748 | { | |
749 | pci_unregister_driver(&isci_pci_driver); | |
750 | sas_release_transport(isci_transport_template); | |
6f231dda DW |
751 | } |
752 | ||
753 | MODULE_LICENSE("Dual BSD/GPL"); | |
754 | MODULE_FIRMWARE(ISCI_FW_NAME); | |
755 | module_init(isci_init); | |
756 | module_exit(isci_exit); |