1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * driver for Microchip PQI-based storage controllers
4 * Copyright (c) 2019-2022 Microchip Technology Inc. and its subsidiaries
5 * Copyright (c) 2016-2018 Microsemi Corporation
6 * Copyright (c) 2016 PMC-Sierra, Inc.
7 *
8 * Questions/Comments/Bugfixes to storagedev@microchip.com
9 *
10 */
11
12 #include <linux/module.h>
13 #include <linux/kernel.h>
14 #include <linux/pci.h>
15 #include <linux/delay.h>
16 #include <linux/interrupt.h>
17 #include <linux/sched.h>
18 #include <linux/rtc.h>
19 #include <linux/bcd.h>
20 #include <linux/reboot.h>
21 #include <linux/cciss_ioctl.h>
22 #include <linux/blk-mq-pci.h>
23 #include <scsi/scsi_host.h>
24 #include <scsi/scsi_cmnd.h>
25 #include <scsi/scsi_device.h>
26 #include <scsi/scsi_eh.h>
27 #include <scsi/scsi_transport_sas.h>
28 #include <asm/unaligned.h>
29 #include "smartpqi.h"
30 #include "smartpqi_sis.h"
31
32 #if !defined(BUILD_TIMESTAMP)
33 #define BUILD_TIMESTAMP
34 #endif
35
36 #define DRIVER_VERSION "2.1.18-045"
37 #define DRIVER_MAJOR 2
38 #define DRIVER_MINOR 1
39 #define DRIVER_RELEASE 18
40 #define DRIVER_REVISION 45
41
42 #define DRIVER_NAME "Microchip SmartPQI Driver (v" \
43 DRIVER_VERSION BUILD_TIMESTAMP ")"
44 #define DRIVER_NAME_SHORT "smartpqi"
45
46 #define PQI_EXTRA_SGL_MEMORY (12 * sizeof(struct pqi_sg_descriptor))
47
48 #define PQI_POST_RESET_DELAY_SECS 5
49 #define PQI_POST_OFA_RESET_DELAY_UPON_TIMEOUT_SECS 10
50
51 MODULE_AUTHOR("Microchip");
52 MODULE_DESCRIPTION("Driver for Microchip Smart Family Controller version "
53 DRIVER_VERSION);
54 MODULE_VERSION(DRIVER_VERSION);
55 MODULE_LICENSE("GPL");
56
57 struct pqi_cmd_priv {
58 int this_residual;
59 };
60
pqi_cmd_priv(struct scsi_cmnd * cmd)61 static struct pqi_cmd_priv *pqi_cmd_priv(struct scsi_cmnd *cmd)
62 {
63 return scsi_cmd_priv(cmd);
64 }
65
66 static void pqi_verify_structures(void);
67 static void pqi_take_ctrl_offline(struct pqi_ctrl_info *ctrl_info,
68 enum pqi_ctrl_shutdown_reason ctrl_shutdown_reason);
69 static void pqi_ctrl_offline_worker(struct work_struct *work);
70 static int pqi_scan_scsi_devices(struct pqi_ctrl_info *ctrl_info);
71 static void pqi_scan_start(struct Scsi_Host *shost);
72 static void pqi_start_io(struct pqi_ctrl_info *ctrl_info,
73 struct pqi_queue_group *queue_group, enum pqi_io_path path,
74 struct pqi_io_request *io_request);
75 static int pqi_submit_raid_request_synchronous(struct pqi_ctrl_info *ctrl_info,
76 struct pqi_iu_header *request, unsigned int flags,
77 struct pqi_raid_error_info *error_info);
78 static int pqi_aio_submit_io(struct pqi_ctrl_info *ctrl_info,
79 struct scsi_cmnd *scmd, u32 aio_handle, u8 *cdb,
80 unsigned int cdb_length, struct pqi_queue_group *queue_group,
81 struct pqi_encryption_info *encryption_info, bool raid_bypass, bool io_high_prio);
82 static int pqi_aio_submit_r1_write_io(struct pqi_ctrl_info *ctrl_info,
83 struct scsi_cmnd *scmd, struct pqi_queue_group *queue_group,
84 struct pqi_encryption_info *encryption_info, struct pqi_scsi_dev *device,
85 struct pqi_scsi_dev_raid_map_data *rmd);
86 static int pqi_aio_submit_r56_write_io(struct pqi_ctrl_info *ctrl_info,
87 struct scsi_cmnd *scmd, struct pqi_queue_group *queue_group,
88 struct pqi_encryption_info *encryption_info, struct pqi_scsi_dev *device,
89 struct pqi_scsi_dev_raid_map_data *rmd);
90 static void pqi_ofa_ctrl_quiesce(struct pqi_ctrl_info *ctrl_info);
91 static void pqi_ofa_ctrl_unquiesce(struct pqi_ctrl_info *ctrl_info);
92 static int pqi_ofa_ctrl_restart(struct pqi_ctrl_info *ctrl_info, unsigned int delay_secs);
93 static void pqi_ofa_setup_host_buffer(struct pqi_ctrl_info *ctrl_info);
94 static void pqi_ofa_free_host_buffer(struct pqi_ctrl_info *ctrl_info);
95 static int pqi_ofa_host_memory_update(struct pqi_ctrl_info *ctrl_info);
96 static int pqi_device_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info,
97 struct pqi_scsi_dev *device, u8 lun, unsigned long timeout_msecs);
98 static void pqi_fail_all_outstanding_requests(struct pqi_ctrl_info *ctrl_info);
99
100 /* for flags argument to pqi_submit_raid_request_synchronous() */
101 #define PQI_SYNC_FLAGS_INTERRUPTABLE 0x1
102
103 static struct scsi_transport_template *pqi_sas_transport_template;
104
105 static atomic_t pqi_controller_count = ATOMIC_INIT(0);
106
107 enum pqi_lockup_action {
108 NONE,
109 REBOOT,
110 PANIC
111 };
112
113 static enum pqi_lockup_action pqi_lockup_action = NONE;
114
115 static struct {
116 enum pqi_lockup_action action;
117 char *name;
118 } pqi_lockup_actions[] = {
119 {
120 .action = NONE,
121 .name = "none",
122 },
123 {
124 .action = REBOOT,
125 .name = "reboot",
126 },
127 {
128 .action = PANIC,
129 .name = "panic",
130 },
131 };
132
133 static unsigned int pqi_supported_event_types[] = {
134 PQI_EVENT_TYPE_HOTPLUG,
135 PQI_EVENT_TYPE_HARDWARE,
136 PQI_EVENT_TYPE_PHYSICAL_DEVICE,
137 PQI_EVENT_TYPE_LOGICAL_DEVICE,
138 PQI_EVENT_TYPE_OFA,
139 PQI_EVENT_TYPE_AIO_STATE_CHANGE,
140 PQI_EVENT_TYPE_AIO_CONFIG_CHANGE,
141 };
142
143 static int pqi_disable_device_id_wildcards;
144 module_param_named(disable_device_id_wildcards,
145 pqi_disable_device_id_wildcards, int, 0644);
146 MODULE_PARM_DESC(disable_device_id_wildcards,
147 "Disable device ID wildcards.");
148
149 static int pqi_disable_heartbeat;
150 module_param_named(disable_heartbeat,
151 pqi_disable_heartbeat, int, 0644);
152 MODULE_PARM_DESC(disable_heartbeat,
153 "Disable heartbeat.");
154
155 static int pqi_disable_ctrl_shutdown;
156 module_param_named(disable_ctrl_shutdown,
157 pqi_disable_ctrl_shutdown, int, 0644);
158 MODULE_PARM_DESC(disable_ctrl_shutdown,
159 "Disable controller shutdown when controller locked up.");
160
161 static char *pqi_lockup_action_param;
162 module_param_named(lockup_action,
163 pqi_lockup_action_param, charp, 0644);
164 MODULE_PARM_DESC(lockup_action, "Action to take when controller locked up.\n"
165 "\t\tSupported: none, reboot, panic\n"
166 "\t\tDefault: none");
167
168 static int pqi_expose_ld_first;
169 module_param_named(expose_ld_first,
170 pqi_expose_ld_first, int, 0644);
171 MODULE_PARM_DESC(expose_ld_first, "Expose logical drives before physical drives.");
172
173 static int pqi_hide_vsep;
174 module_param_named(hide_vsep,
175 pqi_hide_vsep, int, 0644);
176 MODULE_PARM_DESC(hide_vsep, "Hide the virtual SEP for direct attached drives.");
177
178 static int pqi_disable_managed_interrupts;
179 module_param_named(disable_managed_interrupts,
180 pqi_disable_managed_interrupts, int, 0644);
181 MODULE_PARM_DESC(disable_managed_interrupts,
182 "Disable the kernel automatically assigning SMP affinity to IRQs.");
183
184 static unsigned int pqi_ctrl_ready_timeout_secs;
185 module_param_named(ctrl_ready_timeout,
186 pqi_ctrl_ready_timeout_secs, uint, 0644);
187 MODULE_PARM_DESC(ctrl_ready_timeout,
188 "Timeout in seconds for driver to wait for controller ready.");
189
190 static char *raid_levels[] = {
191 "RAID-0",
192 "RAID-4",
193 "RAID-1(1+0)",
194 "RAID-5",
195 "RAID-5+1",
196 "RAID-6",
197 "RAID-1(Triple)",
198 };
199
pqi_raid_level_to_string(u8 raid_level)200 static char *pqi_raid_level_to_string(u8 raid_level)
201 {
202 if (raid_level < ARRAY_SIZE(raid_levels))
203 return raid_levels[raid_level];
204
205 return "RAID UNKNOWN";
206 }
207
208 #define SA_RAID_0 0
209 #define SA_RAID_4 1
210 #define SA_RAID_1 2 /* also used for RAID 10 */
211 #define SA_RAID_5 3 /* also used for RAID 50 */
212 #define SA_RAID_51 4
213 #define SA_RAID_6 5 /* also used for RAID 60 */
214 #define SA_RAID_TRIPLE 6 /* also used for RAID 1+0 Triple */
215 #define SA_RAID_MAX SA_RAID_TRIPLE
216 #define SA_RAID_UNKNOWN 0xff
217
pqi_scsi_done(struct scsi_cmnd * scmd)218 static inline void pqi_scsi_done(struct scsi_cmnd *scmd)
219 {
220 pqi_prep_for_scsi_done(scmd);
221 scsi_done(scmd);
222 }
223
pqi_disable_write_same(struct scsi_device * sdev)224 static inline void pqi_disable_write_same(struct scsi_device *sdev)
225 {
226 sdev->no_write_same = 1;
227 }
228
pqi_scsi3addr_equal(u8 * scsi3addr1,u8 * scsi3addr2)229 static inline bool pqi_scsi3addr_equal(u8 *scsi3addr1, u8 *scsi3addr2)
230 {
231 return memcmp(scsi3addr1, scsi3addr2, 8) == 0;
232 }
233
pqi_is_logical_device(struct pqi_scsi_dev * device)234 static inline bool pqi_is_logical_device(struct pqi_scsi_dev *device)
235 {
236 return !device->is_physical_device;
237 }
238
pqi_is_external_raid_addr(u8 * scsi3addr)239 static inline bool pqi_is_external_raid_addr(u8 *scsi3addr)
240 {
241 return scsi3addr[2] != 0;
242 }
243
pqi_ctrl_offline(struct pqi_ctrl_info * ctrl_info)244 static inline bool pqi_ctrl_offline(struct pqi_ctrl_info *ctrl_info)
245 {
246 return !ctrl_info->controller_online;
247 }
248
pqi_check_ctrl_health(struct pqi_ctrl_info * ctrl_info)249 static inline void pqi_check_ctrl_health(struct pqi_ctrl_info *ctrl_info)
250 {
251 if (ctrl_info->controller_online)
252 if (!sis_is_firmware_running(ctrl_info))
253 pqi_take_ctrl_offline(ctrl_info, PQI_FIRMWARE_KERNEL_NOT_UP);
254 }
255
pqi_is_hba_lunid(u8 * scsi3addr)256 static inline bool pqi_is_hba_lunid(u8 *scsi3addr)
257 {
258 return pqi_scsi3addr_equal(scsi3addr, RAID_CTLR_LUNID);
259 }
260
261 #define PQI_DRIVER_SCRATCH_PQI_MODE 0x1
262 #define PQI_DRIVER_SCRATCH_FW_TRIAGE_SUPPORTED 0x2
263
pqi_get_ctrl_mode(struct pqi_ctrl_info * ctrl_info)264 static inline enum pqi_ctrl_mode pqi_get_ctrl_mode(struct pqi_ctrl_info *ctrl_info)
265 {
266 return sis_read_driver_scratch(ctrl_info) & PQI_DRIVER_SCRATCH_PQI_MODE ? PQI_MODE : SIS_MODE;
267 }
268
pqi_save_ctrl_mode(struct pqi_ctrl_info * ctrl_info,enum pqi_ctrl_mode mode)269 static inline void pqi_save_ctrl_mode(struct pqi_ctrl_info *ctrl_info,
270 enum pqi_ctrl_mode mode)
271 {
272 u32 driver_scratch;
273
274 driver_scratch = sis_read_driver_scratch(ctrl_info);
275
276 if (mode == PQI_MODE)
277 driver_scratch |= PQI_DRIVER_SCRATCH_PQI_MODE;
278 else
279 driver_scratch &= ~PQI_DRIVER_SCRATCH_PQI_MODE;
280
281 sis_write_driver_scratch(ctrl_info, driver_scratch);
282 }
283
pqi_is_fw_triage_supported(struct pqi_ctrl_info * ctrl_info)284 static inline bool pqi_is_fw_triage_supported(struct pqi_ctrl_info *ctrl_info)
285 {
286 return (sis_read_driver_scratch(ctrl_info) & PQI_DRIVER_SCRATCH_FW_TRIAGE_SUPPORTED) != 0;
287 }
288
pqi_save_fw_triage_setting(struct pqi_ctrl_info * ctrl_info,bool is_supported)289 static inline void pqi_save_fw_triage_setting(struct pqi_ctrl_info *ctrl_info, bool is_supported)
290 {
291 u32 driver_scratch;
292
293 driver_scratch = sis_read_driver_scratch(ctrl_info);
294
295 if (is_supported)
296 driver_scratch |= PQI_DRIVER_SCRATCH_FW_TRIAGE_SUPPORTED;
297 else
298 driver_scratch &= ~PQI_DRIVER_SCRATCH_FW_TRIAGE_SUPPORTED;
299
300 sis_write_driver_scratch(ctrl_info, driver_scratch);
301 }
302
pqi_ctrl_block_scan(struct pqi_ctrl_info * ctrl_info)303 static inline void pqi_ctrl_block_scan(struct pqi_ctrl_info *ctrl_info)
304 {
305 ctrl_info->scan_blocked = true;
306 mutex_lock(&ctrl_info->scan_mutex);
307 }
308
pqi_ctrl_unblock_scan(struct pqi_ctrl_info * ctrl_info)309 static inline void pqi_ctrl_unblock_scan(struct pqi_ctrl_info *ctrl_info)
310 {
311 ctrl_info->scan_blocked = false;
312 mutex_unlock(&ctrl_info->scan_mutex);
313 }
314
pqi_ctrl_scan_blocked(struct pqi_ctrl_info * ctrl_info)315 static inline bool pqi_ctrl_scan_blocked(struct pqi_ctrl_info *ctrl_info)
316 {
317 return ctrl_info->scan_blocked;
318 }
319
pqi_ctrl_block_device_reset(struct pqi_ctrl_info * ctrl_info)320 static inline void pqi_ctrl_block_device_reset(struct pqi_ctrl_info *ctrl_info)
321 {
322 mutex_lock(&ctrl_info->lun_reset_mutex);
323 }
324
pqi_ctrl_unblock_device_reset(struct pqi_ctrl_info * ctrl_info)325 static inline void pqi_ctrl_unblock_device_reset(struct pqi_ctrl_info *ctrl_info)
326 {
327 mutex_unlock(&ctrl_info->lun_reset_mutex);
328 }
329
pqi_scsi_block_requests(struct pqi_ctrl_info * ctrl_info)330 static inline void pqi_scsi_block_requests(struct pqi_ctrl_info *ctrl_info)
331 {
332 struct Scsi_Host *shost;
333 unsigned int num_loops;
334 int msecs_sleep;
335
336 shost = ctrl_info->scsi_host;
337
338 scsi_block_requests(shost);
339
340 num_loops = 0;
341 msecs_sleep = 20;
342 while (scsi_host_busy(shost)) {
343 num_loops++;
344 if (num_loops == 10)
345 msecs_sleep = 500;
346 msleep(msecs_sleep);
347 }
348 }
349
pqi_scsi_unblock_requests(struct pqi_ctrl_info * ctrl_info)350 static inline void pqi_scsi_unblock_requests(struct pqi_ctrl_info *ctrl_info)
351 {
352 scsi_unblock_requests(ctrl_info->scsi_host);
353 }
354
pqi_ctrl_busy(struct pqi_ctrl_info * ctrl_info)355 static inline void pqi_ctrl_busy(struct pqi_ctrl_info *ctrl_info)
356 {
357 atomic_inc(&ctrl_info->num_busy_threads);
358 }
359
pqi_ctrl_unbusy(struct pqi_ctrl_info * ctrl_info)360 static inline void pqi_ctrl_unbusy(struct pqi_ctrl_info *ctrl_info)
361 {
362 atomic_dec(&ctrl_info->num_busy_threads);
363 }
364
pqi_ctrl_blocked(struct pqi_ctrl_info * ctrl_info)365 static inline bool pqi_ctrl_blocked(struct pqi_ctrl_info *ctrl_info)
366 {
367 return ctrl_info->block_requests;
368 }
369
pqi_ctrl_block_requests(struct pqi_ctrl_info * ctrl_info)370 static inline void pqi_ctrl_block_requests(struct pqi_ctrl_info *ctrl_info)
371 {
372 ctrl_info->block_requests = true;
373 }
374
pqi_ctrl_unblock_requests(struct pqi_ctrl_info * ctrl_info)375 static inline void pqi_ctrl_unblock_requests(struct pqi_ctrl_info *ctrl_info)
376 {
377 ctrl_info->block_requests = false;
378 wake_up_all(&ctrl_info->block_requests_wait);
379 }
380
pqi_wait_if_ctrl_blocked(struct pqi_ctrl_info * ctrl_info)381 static void pqi_wait_if_ctrl_blocked(struct pqi_ctrl_info *ctrl_info)
382 {
383 if (!pqi_ctrl_blocked(ctrl_info))
384 return;
385
386 atomic_inc(&ctrl_info->num_blocked_threads);
387 wait_event(ctrl_info->block_requests_wait,
388 !pqi_ctrl_blocked(ctrl_info));
389 atomic_dec(&ctrl_info->num_blocked_threads);
390 }
391
392 #define PQI_QUIESCE_WARNING_TIMEOUT_SECS 10
393
pqi_ctrl_wait_until_quiesced(struct pqi_ctrl_info * ctrl_info)394 static inline void pqi_ctrl_wait_until_quiesced(struct pqi_ctrl_info *ctrl_info)
395 {
396 unsigned long start_jiffies;
397 unsigned long warning_timeout;
398 bool displayed_warning;
399
400 displayed_warning = false;
401 start_jiffies = jiffies;
402 warning_timeout = (PQI_QUIESCE_WARNING_TIMEOUT_SECS * HZ) + start_jiffies;
403
404 while (atomic_read(&ctrl_info->num_busy_threads) >
405 atomic_read(&ctrl_info->num_blocked_threads)) {
406 if (time_after(jiffies, warning_timeout)) {
407 dev_warn(&ctrl_info->pci_dev->dev,
408 "waiting %u seconds for driver activity to quiesce\n",
409 jiffies_to_msecs(jiffies - start_jiffies) / 1000);
410 displayed_warning = true;
411 warning_timeout = (PQI_QUIESCE_WARNING_TIMEOUT_SECS * HZ) + jiffies;
412 }
413 usleep_range(1000, 2000);
414 }
415
416 if (displayed_warning)
417 dev_warn(&ctrl_info->pci_dev->dev,
418 "driver activity quiesced after waiting for %u seconds\n",
419 jiffies_to_msecs(jiffies - start_jiffies) / 1000);
420 }
421
pqi_device_offline(struct pqi_scsi_dev * device)422 static inline bool pqi_device_offline(struct pqi_scsi_dev *device)
423 {
424 return device->device_offline;
425 }
426
pqi_ctrl_ofa_start(struct pqi_ctrl_info * ctrl_info)427 static inline void pqi_ctrl_ofa_start(struct pqi_ctrl_info *ctrl_info)
428 {
429 mutex_lock(&ctrl_info->ofa_mutex);
430 }
431
pqi_ctrl_ofa_done(struct pqi_ctrl_info * ctrl_info)432 static inline void pqi_ctrl_ofa_done(struct pqi_ctrl_info *ctrl_info)
433 {
434 mutex_unlock(&ctrl_info->ofa_mutex);
435 }
436
pqi_wait_until_ofa_finished(struct pqi_ctrl_info * ctrl_info)437 static inline void pqi_wait_until_ofa_finished(struct pqi_ctrl_info *ctrl_info)
438 {
439 mutex_lock(&ctrl_info->ofa_mutex);
440 mutex_unlock(&ctrl_info->ofa_mutex);
441 }
442
pqi_ofa_in_progress(struct pqi_ctrl_info * ctrl_info)443 static inline bool pqi_ofa_in_progress(struct pqi_ctrl_info *ctrl_info)
444 {
445 return mutex_is_locked(&ctrl_info->ofa_mutex);
446 }
447
pqi_device_remove_start(struct pqi_scsi_dev * device)448 static inline void pqi_device_remove_start(struct pqi_scsi_dev *device)
449 {
450 device->in_remove = true;
451 }
452
pqi_device_in_remove(struct pqi_scsi_dev * device)453 static inline bool pqi_device_in_remove(struct pqi_scsi_dev *device)
454 {
455 return device->in_remove;
456 }
457
pqi_event_type_to_event_index(unsigned int event_type)458 static inline int pqi_event_type_to_event_index(unsigned int event_type)
459 {
460 int index;
461
462 for (index = 0; index < ARRAY_SIZE(pqi_supported_event_types); index++)
463 if (event_type == pqi_supported_event_types[index])
464 return index;
465
466 return -1;
467 }
468
pqi_is_supported_event(unsigned int event_type)469 static inline bool pqi_is_supported_event(unsigned int event_type)
470 {
471 return pqi_event_type_to_event_index(event_type) != -1;
472 }
473
pqi_schedule_rescan_worker_with_delay(struct pqi_ctrl_info * ctrl_info,unsigned long delay)474 static inline void pqi_schedule_rescan_worker_with_delay(struct pqi_ctrl_info *ctrl_info,
475 unsigned long delay)
476 {
477 if (pqi_ctrl_offline(ctrl_info))
478 return;
479
480 schedule_delayed_work(&ctrl_info->rescan_work, delay);
481 }
482
pqi_schedule_rescan_worker(struct pqi_ctrl_info * ctrl_info)483 static inline void pqi_schedule_rescan_worker(struct pqi_ctrl_info *ctrl_info)
484 {
485 pqi_schedule_rescan_worker_with_delay(ctrl_info, 0);
486 }
487
488 #define PQI_RESCAN_WORK_DELAY (10 * HZ)
489
pqi_schedule_rescan_worker_delayed(struct pqi_ctrl_info * ctrl_info)490 static inline void pqi_schedule_rescan_worker_delayed(struct pqi_ctrl_info *ctrl_info)
491 {
492 pqi_schedule_rescan_worker_with_delay(ctrl_info, PQI_RESCAN_WORK_DELAY);
493 }
494
pqi_cancel_rescan_worker(struct pqi_ctrl_info * ctrl_info)495 static inline void pqi_cancel_rescan_worker(struct pqi_ctrl_info *ctrl_info)
496 {
497 cancel_delayed_work_sync(&ctrl_info->rescan_work);
498 }
499
pqi_read_heartbeat_counter(struct pqi_ctrl_info * ctrl_info)500 static inline u32 pqi_read_heartbeat_counter(struct pqi_ctrl_info *ctrl_info)
501 {
502 if (!ctrl_info->heartbeat_counter)
503 return 0;
504
505 return readl(ctrl_info->heartbeat_counter);
506 }
507
pqi_read_soft_reset_status(struct pqi_ctrl_info * ctrl_info)508 static inline u8 pqi_read_soft_reset_status(struct pqi_ctrl_info *ctrl_info)
509 {
510 return readb(ctrl_info->soft_reset_status);
511 }
512
pqi_clear_soft_reset_status(struct pqi_ctrl_info * ctrl_info)513 static inline void pqi_clear_soft_reset_status(struct pqi_ctrl_info *ctrl_info)
514 {
515 u8 status;
516
517 status = pqi_read_soft_reset_status(ctrl_info);
518 status &= ~PQI_SOFT_RESET_ABORT;
519 writeb(status, ctrl_info->soft_reset_status);
520 }
521
pqi_map_single(struct pci_dev * pci_dev,struct pqi_sg_descriptor * sg_descriptor,void * buffer,size_t buffer_length,enum dma_data_direction data_direction)522 static int pqi_map_single(struct pci_dev *pci_dev,
523 struct pqi_sg_descriptor *sg_descriptor, void *buffer,
524 size_t buffer_length, enum dma_data_direction data_direction)
525 {
526 dma_addr_t bus_address;
527
528 if (!buffer || buffer_length == 0 || data_direction == DMA_NONE)
529 return 0;
530
531 bus_address = dma_map_single(&pci_dev->dev, buffer, buffer_length,
532 data_direction);
533 if (dma_mapping_error(&pci_dev->dev, bus_address))
534 return -ENOMEM;
535
536 put_unaligned_le64((u64)bus_address, &sg_descriptor->address);
537 put_unaligned_le32(buffer_length, &sg_descriptor->length);
538 put_unaligned_le32(CISS_SG_LAST, &sg_descriptor->flags);
539
540 return 0;
541 }
542
pqi_pci_unmap(struct pci_dev * pci_dev,struct pqi_sg_descriptor * descriptors,int num_descriptors,enum dma_data_direction data_direction)543 static void pqi_pci_unmap(struct pci_dev *pci_dev,
544 struct pqi_sg_descriptor *descriptors, int num_descriptors,
545 enum dma_data_direction data_direction)
546 {
547 int i;
548
549 if (data_direction == DMA_NONE)
550 return;
551
552 for (i = 0; i < num_descriptors; i++)
553 dma_unmap_single(&pci_dev->dev,
554 (dma_addr_t)get_unaligned_le64(&descriptors[i].address),
555 get_unaligned_le32(&descriptors[i].length),
556 data_direction);
557 }
558
pqi_build_raid_path_request(struct pqi_ctrl_info * ctrl_info,struct pqi_raid_path_request * request,u8 cmd,u8 * scsi3addr,void * buffer,size_t buffer_length,u16 vpd_page,enum dma_data_direction * dir)559 static int pqi_build_raid_path_request(struct pqi_ctrl_info *ctrl_info,
560 struct pqi_raid_path_request *request, u8 cmd,
561 u8 *scsi3addr, void *buffer, size_t buffer_length,
562 u16 vpd_page, enum dma_data_direction *dir)
563 {
564 u8 *cdb;
565 size_t cdb_length = buffer_length;
566
567 memset(request, 0, sizeof(*request));
568
569 request->header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO;
570 put_unaligned_le16(offsetof(struct pqi_raid_path_request,
571 sg_descriptors[1]) - PQI_REQUEST_HEADER_LENGTH,
572 &request->header.iu_length);
573 put_unaligned_le32(buffer_length, &request->buffer_length);
574 memcpy(request->lun_number, scsi3addr, sizeof(request->lun_number));
575 request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
576 request->additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_0;
577
578 cdb = request->cdb;
579
580 switch (cmd) {
581 case TEST_UNIT_READY:
582 request->data_direction = SOP_READ_FLAG;
583 cdb[0] = TEST_UNIT_READY;
584 break;
585 case INQUIRY:
586 request->data_direction = SOP_READ_FLAG;
587 cdb[0] = INQUIRY;
588 if (vpd_page & VPD_PAGE) {
589 cdb[1] = 0x1;
590 cdb[2] = (u8)vpd_page;
591 }
592 cdb[4] = (u8)cdb_length;
593 break;
594 case CISS_REPORT_LOG:
595 case CISS_REPORT_PHYS:
596 request->data_direction = SOP_READ_FLAG;
597 cdb[0] = cmd;
598 if (cmd == CISS_REPORT_PHYS) {
599 if (ctrl_info->rpl_extended_format_4_5_supported)
600 cdb[1] = CISS_REPORT_PHYS_FLAG_EXTENDED_FORMAT_4;
601 else
602 cdb[1] = CISS_REPORT_PHYS_FLAG_EXTENDED_FORMAT_2;
603 } else {
604 cdb[1] = ctrl_info->ciss_report_log_flags;
605 }
606 put_unaligned_be32(cdb_length, &cdb[6]);
607 break;
608 case CISS_GET_RAID_MAP:
609 request->data_direction = SOP_READ_FLAG;
610 cdb[0] = CISS_READ;
611 cdb[1] = CISS_GET_RAID_MAP;
612 put_unaligned_be32(cdb_length, &cdb[6]);
613 break;
614 case SA_FLUSH_CACHE:
615 request->header.driver_flags = PQI_DRIVER_NONBLOCKABLE_REQUEST;
616 request->data_direction = SOP_WRITE_FLAG;
617 cdb[0] = BMIC_WRITE;
618 cdb[6] = BMIC_FLUSH_CACHE;
619 put_unaligned_be16(cdb_length, &cdb[7]);
620 break;
621 case BMIC_SENSE_DIAG_OPTIONS:
622 cdb_length = 0;
623 fallthrough;
624 case BMIC_IDENTIFY_CONTROLLER:
625 case BMIC_IDENTIFY_PHYSICAL_DEVICE:
626 case BMIC_SENSE_SUBSYSTEM_INFORMATION:
627 case BMIC_SENSE_FEATURE:
628 request->data_direction = SOP_READ_FLAG;
629 cdb[0] = BMIC_READ;
630 cdb[6] = cmd;
631 put_unaligned_be16(cdb_length, &cdb[7]);
632 break;
633 case BMIC_SET_DIAG_OPTIONS:
634 cdb_length = 0;
635 fallthrough;
636 case BMIC_WRITE_HOST_WELLNESS:
637 request->data_direction = SOP_WRITE_FLAG;
638 cdb[0] = BMIC_WRITE;
639 cdb[6] = cmd;
640 put_unaligned_be16(cdb_length, &cdb[7]);
641 break;
642 case BMIC_CSMI_PASSTHRU:
643 request->data_direction = SOP_BIDIRECTIONAL;
644 cdb[0] = BMIC_WRITE;
645 cdb[5] = CSMI_CC_SAS_SMP_PASSTHRU;
646 cdb[6] = cmd;
647 put_unaligned_be16(cdb_length, &cdb[7]);
648 break;
649 default:
650 dev_err(&ctrl_info->pci_dev->dev, "unknown command 0x%c\n", cmd);
651 break;
652 }
653
654 switch (request->data_direction) {
655 case SOP_READ_FLAG:
656 *dir = DMA_FROM_DEVICE;
657 break;
658 case SOP_WRITE_FLAG:
659 *dir = DMA_TO_DEVICE;
660 break;
661 case SOP_NO_DIRECTION_FLAG:
662 *dir = DMA_NONE;
663 break;
664 default:
665 *dir = DMA_BIDIRECTIONAL;
666 break;
667 }
668
669 return pqi_map_single(ctrl_info->pci_dev, &request->sg_descriptors[0],
670 buffer, buffer_length, *dir);
671 }
672
pqi_reinit_io_request(struct pqi_io_request * io_request)673 static inline void pqi_reinit_io_request(struct pqi_io_request *io_request)
674 {
675 io_request->scmd = NULL;
676 io_request->status = 0;
677 io_request->error_info = NULL;
678 io_request->raid_bypass = false;
679 }
680
pqi_alloc_io_request(struct pqi_ctrl_info * ctrl_info)681 static struct pqi_io_request *pqi_alloc_io_request(
682 struct pqi_ctrl_info *ctrl_info)
683 {
684 struct pqi_io_request *io_request;
685 u16 i = ctrl_info->next_io_request_slot; /* benignly racy */
686
687 while (1) {
688 io_request = &ctrl_info->io_request_pool[i];
689 if (atomic_inc_return(&io_request->refcount) == 1)
690 break;
691 atomic_dec(&io_request->refcount);
692 i = (i + 1) % ctrl_info->max_io_slots;
693 }
694
695 /* benignly racy */
696 ctrl_info->next_io_request_slot = (i + 1) % ctrl_info->max_io_slots;
697
698 pqi_reinit_io_request(io_request);
699
700 return io_request;
701 }
702
pqi_free_io_request(struct pqi_io_request * io_request)703 static void pqi_free_io_request(struct pqi_io_request *io_request)
704 {
705 atomic_dec(&io_request->refcount);
706 }
707
pqi_send_scsi_raid_request(struct pqi_ctrl_info * ctrl_info,u8 cmd,u8 * scsi3addr,void * buffer,size_t buffer_length,u16 vpd_page,struct pqi_raid_error_info * error_info)708 static int pqi_send_scsi_raid_request(struct pqi_ctrl_info *ctrl_info, u8 cmd,
709 u8 *scsi3addr, void *buffer, size_t buffer_length, u16 vpd_page,
710 struct pqi_raid_error_info *error_info)
711 {
712 int rc;
713 struct pqi_raid_path_request request;
714 enum dma_data_direction dir;
715
716 rc = pqi_build_raid_path_request(ctrl_info, &request, cmd, scsi3addr,
717 buffer, buffer_length, vpd_page, &dir);
718 if (rc)
719 return rc;
720
721 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0, error_info);
722
723 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, dir);
724
725 return rc;
726 }
727
728 /* helper functions for pqi_send_scsi_raid_request */
729
pqi_send_ctrl_raid_request(struct pqi_ctrl_info * ctrl_info,u8 cmd,void * buffer,size_t buffer_length)730 static inline int pqi_send_ctrl_raid_request(struct pqi_ctrl_info *ctrl_info,
731 u8 cmd, void *buffer, size_t buffer_length)
732 {
733 return pqi_send_scsi_raid_request(ctrl_info, cmd, RAID_CTLR_LUNID,
734 buffer, buffer_length, 0, NULL);
735 }
736
pqi_send_ctrl_raid_with_error(struct pqi_ctrl_info * ctrl_info,u8 cmd,void * buffer,size_t buffer_length,struct pqi_raid_error_info * error_info)737 static inline int pqi_send_ctrl_raid_with_error(struct pqi_ctrl_info *ctrl_info,
738 u8 cmd, void *buffer, size_t buffer_length,
739 struct pqi_raid_error_info *error_info)
740 {
741 return pqi_send_scsi_raid_request(ctrl_info, cmd, RAID_CTLR_LUNID,
742 buffer, buffer_length, 0, error_info);
743 }
744
pqi_identify_controller(struct pqi_ctrl_info * ctrl_info,struct bmic_identify_controller * buffer)745 static inline int pqi_identify_controller(struct pqi_ctrl_info *ctrl_info,
746 struct bmic_identify_controller *buffer)
747 {
748 return pqi_send_ctrl_raid_request(ctrl_info, BMIC_IDENTIFY_CONTROLLER,
749 buffer, sizeof(*buffer));
750 }
751
pqi_sense_subsystem_info(struct pqi_ctrl_info * ctrl_info,struct bmic_sense_subsystem_info * sense_info)752 static inline int pqi_sense_subsystem_info(struct pqi_ctrl_info *ctrl_info,
753 struct bmic_sense_subsystem_info *sense_info)
754 {
755 return pqi_send_ctrl_raid_request(ctrl_info,
756 BMIC_SENSE_SUBSYSTEM_INFORMATION, sense_info,
757 sizeof(*sense_info));
758 }
759
pqi_scsi_inquiry(struct pqi_ctrl_info * ctrl_info,u8 * scsi3addr,u16 vpd_page,void * buffer,size_t buffer_length)760 static inline int pqi_scsi_inquiry(struct pqi_ctrl_info *ctrl_info,
761 u8 *scsi3addr, u16 vpd_page, void *buffer, size_t buffer_length)
762 {
763 return pqi_send_scsi_raid_request(ctrl_info, INQUIRY, scsi3addr,
764 buffer, buffer_length, vpd_page, NULL);
765 }
766
pqi_identify_physical_device(struct pqi_ctrl_info * ctrl_info,struct pqi_scsi_dev * device,struct bmic_identify_physical_device * buffer,size_t buffer_length)767 static int pqi_identify_physical_device(struct pqi_ctrl_info *ctrl_info,
768 struct pqi_scsi_dev *device,
769 struct bmic_identify_physical_device *buffer, size_t buffer_length)
770 {
771 int rc;
772 enum dma_data_direction dir;
773 u16 bmic_device_index;
774 struct pqi_raid_path_request request;
775
776 rc = pqi_build_raid_path_request(ctrl_info, &request,
777 BMIC_IDENTIFY_PHYSICAL_DEVICE, RAID_CTLR_LUNID, buffer,
778 buffer_length, 0, &dir);
779 if (rc)
780 return rc;
781
782 bmic_device_index = CISS_GET_DRIVE_NUMBER(device->scsi3addr);
783 request.cdb[2] = (u8)bmic_device_index;
784 request.cdb[9] = (u8)(bmic_device_index >> 8);
785
786 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0, NULL);
787
788 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, dir);
789
790 return rc;
791 }
792
pqi_aio_limit_to_bytes(__le16 * limit)793 static inline u32 pqi_aio_limit_to_bytes(__le16 *limit)
794 {
795 u32 bytes;
796
797 bytes = get_unaligned_le16(limit);
798 if (bytes == 0)
799 bytes = ~0;
800 else
801 bytes *= 1024;
802
803 return bytes;
804 }
805
806 #pragma pack(1)
807
808 struct bmic_sense_feature_buffer {
809 struct bmic_sense_feature_buffer_header header;
810 struct bmic_sense_feature_io_page_aio_subpage aio_subpage;
811 };
812
813 #pragma pack()
814
815 #define MINIMUM_AIO_SUBPAGE_BUFFER_LENGTH \
816 offsetofend(struct bmic_sense_feature_buffer, \
817 aio_subpage.max_write_raid_1_10_3drive)
818
819 #define MINIMUM_AIO_SUBPAGE_LENGTH \
820 (offsetofend(struct bmic_sense_feature_io_page_aio_subpage, \
821 max_write_raid_1_10_3drive) - \
822 sizeof_field(struct bmic_sense_feature_io_page_aio_subpage, header))
823
pqi_get_advanced_raid_bypass_config(struct pqi_ctrl_info * ctrl_info)824 static int pqi_get_advanced_raid_bypass_config(struct pqi_ctrl_info *ctrl_info)
825 {
826 int rc;
827 enum dma_data_direction dir;
828 struct pqi_raid_path_request request;
829 struct bmic_sense_feature_buffer *buffer;
830
831 buffer = kmalloc(sizeof(*buffer), GFP_KERNEL);
832 if (!buffer)
833 return -ENOMEM;
834
835 rc = pqi_build_raid_path_request(ctrl_info, &request, BMIC_SENSE_FEATURE, RAID_CTLR_LUNID,
836 buffer, sizeof(*buffer), 0, &dir);
837 if (rc)
838 goto error;
839
840 request.cdb[2] = BMIC_SENSE_FEATURE_IO_PAGE;
841 request.cdb[3] = BMIC_SENSE_FEATURE_IO_PAGE_AIO_SUBPAGE;
842
843 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0, NULL);
844
845 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, dir);
846
847 if (rc)
848 goto error;
849
850 if (buffer->header.page_code != BMIC_SENSE_FEATURE_IO_PAGE ||
851 buffer->header.subpage_code !=
852 BMIC_SENSE_FEATURE_IO_PAGE_AIO_SUBPAGE ||
853 get_unaligned_le16(&buffer->header.buffer_length) <
854 MINIMUM_AIO_SUBPAGE_BUFFER_LENGTH ||
855 buffer->aio_subpage.header.page_code !=
856 BMIC_SENSE_FEATURE_IO_PAGE ||
857 buffer->aio_subpage.header.subpage_code !=
858 BMIC_SENSE_FEATURE_IO_PAGE_AIO_SUBPAGE ||
859 get_unaligned_le16(&buffer->aio_subpage.header.page_length) <
860 MINIMUM_AIO_SUBPAGE_LENGTH) {
861 goto error;
862 }
863
864 ctrl_info->max_transfer_encrypted_sas_sata =
865 pqi_aio_limit_to_bytes(
866 &buffer->aio_subpage.max_transfer_encrypted_sas_sata);
867
868 ctrl_info->max_transfer_encrypted_nvme =
869 pqi_aio_limit_to_bytes(
870 &buffer->aio_subpage.max_transfer_encrypted_nvme);
871
872 ctrl_info->max_write_raid_5_6 =
873 pqi_aio_limit_to_bytes(
874 &buffer->aio_subpage.max_write_raid_5_6);
875
876 ctrl_info->max_write_raid_1_10_2drive =
877 pqi_aio_limit_to_bytes(
878 &buffer->aio_subpage.max_write_raid_1_10_2drive);
879
880 ctrl_info->max_write_raid_1_10_3drive =
881 pqi_aio_limit_to_bytes(
882 &buffer->aio_subpage.max_write_raid_1_10_3drive);
883
884 error:
885 kfree(buffer);
886
887 return rc;
888 }
889
pqi_flush_cache(struct pqi_ctrl_info * ctrl_info,enum bmic_flush_cache_shutdown_event shutdown_event)890 static int pqi_flush_cache(struct pqi_ctrl_info *ctrl_info,
891 enum bmic_flush_cache_shutdown_event shutdown_event)
892 {
893 int rc;
894 struct bmic_flush_cache *flush_cache;
895
896 flush_cache = kzalloc(sizeof(*flush_cache), GFP_KERNEL);
897 if (!flush_cache)
898 return -ENOMEM;
899
900 flush_cache->shutdown_event = shutdown_event;
901
902 rc = pqi_send_ctrl_raid_request(ctrl_info, SA_FLUSH_CACHE, flush_cache,
903 sizeof(*flush_cache));
904
905 kfree(flush_cache);
906
907 return rc;
908 }
909
pqi_csmi_smp_passthru(struct pqi_ctrl_info * ctrl_info,struct bmic_csmi_smp_passthru_buffer * buffer,size_t buffer_length,struct pqi_raid_error_info * error_info)910 int pqi_csmi_smp_passthru(struct pqi_ctrl_info *ctrl_info,
911 struct bmic_csmi_smp_passthru_buffer *buffer, size_t buffer_length,
912 struct pqi_raid_error_info *error_info)
913 {
914 return pqi_send_ctrl_raid_with_error(ctrl_info, BMIC_CSMI_PASSTHRU,
915 buffer, buffer_length, error_info);
916 }
917
918 #define PQI_FETCH_PTRAID_DATA (1 << 31)
919
pqi_set_diag_rescan(struct pqi_ctrl_info * ctrl_info)920 static int pqi_set_diag_rescan(struct pqi_ctrl_info *ctrl_info)
921 {
922 int rc;
923 struct bmic_diag_options *diag;
924
925 diag = kzalloc(sizeof(*diag), GFP_KERNEL);
926 if (!diag)
927 return -ENOMEM;
928
929 rc = pqi_send_ctrl_raid_request(ctrl_info, BMIC_SENSE_DIAG_OPTIONS,
930 diag, sizeof(*diag));
931 if (rc)
932 goto out;
933
934 diag->options |= cpu_to_le32(PQI_FETCH_PTRAID_DATA);
935
936 rc = pqi_send_ctrl_raid_request(ctrl_info, BMIC_SET_DIAG_OPTIONS, diag,
937 sizeof(*diag));
938
939 out:
940 kfree(diag);
941
942 return rc;
943 }
944
pqi_write_host_wellness(struct pqi_ctrl_info * ctrl_info,void * buffer,size_t buffer_length)945 static inline int pqi_write_host_wellness(struct pqi_ctrl_info *ctrl_info,
946 void *buffer, size_t buffer_length)
947 {
948 return pqi_send_ctrl_raid_request(ctrl_info, BMIC_WRITE_HOST_WELLNESS,
949 buffer, buffer_length);
950 }
951
952 #pragma pack(1)
953
954 struct bmic_host_wellness_driver_version {
955 u8 start_tag[4];
956 u8 driver_version_tag[2];
957 __le16 driver_version_length;
958 char driver_version[32];
959 u8 dont_write_tag[2];
960 u8 end_tag[2];
961 };
962
963 #pragma pack()
964
pqi_write_driver_version_to_host_wellness(struct pqi_ctrl_info * ctrl_info)965 static int pqi_write_driver_version_to_host_wellness(
966 struct pqi_ctrl_info *ctrl_info)
967 {
968 int rc;
969 struct bmic_host_wellness_driver_version *buffer;
970 size_t buffer_length;
971
972 buffer_length = sizeof(*buffer);
973
974 buffer = kmalloc(buffer_length, GFP_KERNEL);
975 if (!buffer)
976 return -ENOMEM;
977
978 buffer->start_tag[0] = '<';
979 buffer->start_tag[1] = 'H';
980 buffer->start_tag[2] = 'W';
981 buffer->start_tag[3] = '>';
982 buffer->driver_version_tag[0] = 'D';
983 buffer->driver_version_tag[1] = 'V';
984 put_unaligned_le16(sizeof(buffer->driver_version),
985 &buffer->driver_version_length);
986 strncpy(buffer->driver_version, "Linux " DRIVER_VERSION,
987 sizeof(buffer->driver_version) - 1);
988 buffer->driver_version[sizeof(buffer->driver_version) - 1] = '\0';
989 buffer->dont_write_tag[0] = 'D';
990 buffer->dont_write_tag[1] = 'W';
991 buffer->end_tag[0] = 'Z';
992 buffer->end_tag[1] = 'Z';
993
994 rc = pqi_write_host_wellness(ctrl_info, buffer, buffer_length);
995
996 kfree(buffer);
997
998 return rc;
999 }
1000
1001 #pragma pack(1)
1002
1003 struct bmic_host_wellness_time {
1004 u8 start_tag[4];
1005 u8 time_tag[2];
1006 __le16 time_length;
1007 u8 time[8];
1008 u8 dont_write_tag[2];
1009 u8 end_tag[2];
1010 };
1011
1012 #pragma pack()
1013
pqi_write_current_time_to_host_wellness(struct pqi_ctrl_info * ctrl_info)1014 static int pqi_write_current_time_to_host_wellness(
1015 struct pqi_ctrl_info *ctrl_info)
1016 {
1017 int rc;
1018 struct bmic_host_wellness_time *buffer;
1019 size_t buffer_length;
1020 time64_t local_time;
1021 unsigned int year;
1022 struct tm tm;
1023
1024 buffer_length = sizeof(*buffer);
1025
1026 buffer = kmalloc(buffer_length, GFP_KERNEL);
1027 if (!buffer)
1028 return -ENOMEM;
1029
1030 buffer->start_tag[0] = '<';
1031 buffer->start_tag[1] = 'H';
1032 buffer->start_tag[2] = 'W';
1033 buffer->start_tag[3] = '>';
1034 buffer->time_tag[0] = 'T';
1035 buffer->time_tag[1] = 'D';
1036 put_unaligned_le16(sizeof(buffer->time),
1037 &buffer->time_length);
1038
1039 local_time = ktime_get_real_seconds();
1040 time64_to_tm(local_time, -sys_tz.tz_minuteswest * 60, &tm);
1041 year = tm.tm_year + 1900;
1042
1043 buffer->time[0] = bin2bcd(tm.tm_hour);
1044 buffer->time[1] = bin2bcd(tm.tm_min);
1045 buffer->time[2] = bin2bcd(tm.tm_sec);
1046 buffer->time[3] = 0;
1047 buffer->time[4] = bin2bcd(tm.tm_mon + 1);
1048 buffer->time[5] = bin2bcd(tm.tm_mday);
1049 buffer->time[6] = bin2bcd(year / 100);
1050 buffer->time[7] = bin2bcd(year % 100);
1051
1052 buffer->dont_write_tag[0] = 'D';
1053 buffer->dont_write_tag[1] = 'W';
1054 buffer->end_tag[0] = 'Z';
1055 buffer->end_tag[1] = 'Z';
1056
1057 rc = pqi_write_host_wellness(ctrl_info, buffer, buffer_length);
1058
1059 kfree(buffer);
1060
1061 return rc;
1062 }
1063
1064 #define PQI_UPDATE_TIME_WORK_INTERVAL (24UL * 60 * 60 * HZ)
1065
pqi_update_time_worker(struct work_struct * work)1066 static void pqi_update_time_worker(struct work_struct *work)
1067 {
1068 int rc;
1069 struct pqi_ctrl_info *ctrl_info;
1070
1071 ctrl_info = container_of(to_delayed_work(work), struct pqi_ctrl_info,
1072 update_time_work);
1073
1074 rc = pqi_write_current_time_to_host_wellness(ctrl_info);
1075 if (rc)
1076 dev_warn(&ctrl_info->pci_dev->dev,
1077 "error updating time on controller\n");
1078
1079 schedule_delayed_work(&ctrl_info->update_time_work,
1080 PQI_UPDATE_TIME_WORK_INTERVAL);
1081 }
1082
pqi_schedule_update_time_worker(struct pqi_ctrl_info * ctrl_info)1083 static inline void pqi_schedule_update_time_worker(struct pqi_ctrl_info *ctrl_info)
1084 {
1085 schedule_delayed_work(&ctrl_info->update_time_work, 0);
1086 }
1087
pqi_cancel_update_time_worker(struct pqi_ctrl_info * ctrl_info)1088 static inline void pqi_cancel_update_time_worker(struct pqi_ctrl_info *ctrl_info)
1089 {
1090 cancel_delayed_work_sync(&ctrl_info->update_time_work);
1091 }
1092
pqi_report_luns(struct pqi_ctrl_info * ctrl_info,u8 cmd,void * buffer,size_t buffer_length)1093 static inline int pqi_report_luns(struct pqi_ctrl_info *ctrl_info, u8 cmd, void *buffer,
1094 size_t buffer_length)
1095 {
1096 return pqi_send_ctrl_raid_request(ctrl_info, cmd, buffer, buffer_length);
1097 }
1098
pqi_report_phys_logical_luns(struct pqi_ctrl_info * ctrl_info,u8 cmd,void ** buffer)1099 static int pqi_report_phys_logical_luns(struct pqi_ctrl_info *ctrl_info, u8 cmd, void **buffer)
1100 {
1101 int rc;
1102 size_t lun_list_length;
1103 size_t lun_data_length;
1104 size_t new_lun_list_length;
1105 void *lun_data = NULL;
1106 struct report_lun_header *report_lun_header;
1107
1108 report_lun_header = kmalloc(sizeof(*report_lun_header), GFP_KERNEL);
1109 if (!report_lun_header) {
1110 rc = -ENOMEM;
1111 goto out;
1112 }
1113
1114 rc = pqi_report_luns(ctrl_info, cmd, report_lun_header, sizeof(*report_lun_header));
1115 if (rc)
1116 goto out;
1117
1118 lun_list_length = get_unaligned_be32(&report_lun_header->list_length);
1119
1120 again:
1121 lun_data_length = sizeof(struct report_lun_header) + lun_list_length;
1122
1123 lun_data = kmalloc(lun_data_length, GFP_KERNEL);
1124 if (!lun_data) {
1125 rc = -ENOMEM;
1126 goto out;
1127 }
1128
1129 if (lun_list_length == 0) {
1130 memcpy(lun_data, report_lun_header, sizeof(*report_lun_header));
1131 goto out;
1132 }
1133
1134 rc = pqi_report_luns(ctrl_info, cmd, lun_data, lun_data_length);
1135 if (rc)
1136 goto out;
1137
1138 new_lun_list_length =
1139 get_unaligned_be32(&((struct report_lun_header *)lun_data)->list_length);
1140
1141 if (new_lun_list_length > lun_list_length) {
1142 lun_list_length = new_lun_list_length;
1143 kfree(lun_data);
1144 goto again;
1145 }
1146
1147 out:
1148 kfree(report_lun_header);
1149
1150 if (rc) {
1151 kfree(lun_data);
1152 lun_data = NULL;
1153 }
1154
1155 *buffer = lun_data;
1156
1157 return rc;
1158 }
1159
pqi_report_phys_luns(struct pqi_ctrl_info * ctrl_info,void ** buffer)1160 static inline int pqi_report_phys_luns(struct pqi_ctrl_info *ctrl_info, void **buffer)
1161 {
1162 int rc;
1163 unsigned int i;
1164 u8 rpl_response_format;
1165 u32 num_physicals;
1166 size_t rpl_16byte_wwid_list_length;
1167 void *rpl_list;
1168 struct report_lun_header *rpl_header;
1169 struct report_phys_lun_8byte_wwid_list *rpl_8byte_wwid_list;
1170 struct report_phys_lun_16byte_wwid_list *rpl_16byte_wwid_list;
1171
1172 rc = pqi_report_phys_logical_luns(ctrl_info, CISS_REPORT_PHYS, &rpl_list);
1173 if (rc)
1174 return rc;
1175
1176 if (ctrl_info->rpl_extended_format_4_5_supported) {
1177 rpl_header = rpl_list;
1178 rpl_response_format = rpl_header->flags & CISS_REPORT_PHYS_FLAG_EXTENDED_FORMAT_MASK;
1179 if (rpl_response_format == CISS_REPORT_PHYS_FLAG_EXTENDED_FORMAT_4) {
1180 *buffer = rpl_list;
1181 return 0;
1182 } else if (rpl_response_format != CISS_REPORT_PHYS_FLAG_EXTENDED_FORMAT_2) {
1183 dev_err(&ctrl_info->pci_dev->dev,
1184 "RPL returned unsupported data format %u\n",
1185 rpl_response_format);
1186 return -EINVAL;
1187 } else {
1188 dev_warn(&ctrl_info->pci_dev->dev,
1189 "RPL returned extended format 2 instead of 4\n");
1190 }
1191 }
1192
1193 rpl_8byte_wwid_list = rpl_list;
1194 num_physicals = get_unaligned_be32(&rpl_8byte_wwid_list->header.list_length) / sizeof(rpl_8byte_wwid_list->lun_entries[0]);
1195 rpl_16byte_wwid_list_length = sizeof(struct report_lun_header) + (num_physicals * sizeof(struct report_phys_lun_16byte_wwid));
1196
1197 rpl_16byte_wwid_list = kmalloc(rpl_16byte_wwid_list_length, GFP_KERNEL);
1198 if (!rpl_16byte_wwid_list)
1199 return -ENOMEM;
1200
1201 put_unaligned_be32(num_physicals * sizeof(struct report_phys_lun_16byte_wwid),
1202 &rpl_16byte_wwid_list->header.list_length);
1203 rpl_16byte_wwid_list->header.flags = rpl_8byte_wwid_list->header.flags;
1204
1205 for (i = 0; i < num_physicals; i++) {
1206 memcpy(&rpl_16byte_wwid_list->lun_entries[i].lunid, &rpl_8byte_wwid_list->lun_entries[i].lunid, sizeof(rpl_8byte_wwid_list->lun_entries[i].lunid));
1207 memcpy(&rpl_16byte_wwid_list->lun_entries[i].wwid[0], &rpl_8byte_wwid_list->lun_entries[i].wwid, sizeof(rpl_8byte_wwid_list->lun_entries[i].wwid));
1208 memset(&rpl_16byte_wwid_list->lun_entries[i].wwid[8], 0, 8);
1209 rpl_16byte_wwid_list->lun_entries[i].device_type = rpl_8byte_wwid_list->lun_entries[i].device_type;
1210 rpl_16byte_wwid_list->lun_entries[i].device_flags = rpl_8byte_wwid_list->lun_entries[i].device_flags;
1211 rpl_16byte_wwid_list->lun_entries[i].lun_count = rpl_8byte_wwid_list->lun_entries[i].lun_count;
1212 rpl_16byte_wwid_list->lun_entries[i].redundant_paths = rpl_8byte_wwid_list->lun_entries[i].redundant_paths;
1213 rpl_16byte_wwid_list->lun_entries[i].aio_handle = rpl_8byte_wwid_list->lun_entries[i].aio_handle;
1214 }
1215
1216 kfree(rpl_8byte_wwid_list);
1217 *buffer = rpl_16byte_wwid_list;
1218
1219 return 0;
1220 }
1221
pqi_report_logical_luns(struct pqi_ctrl_info * ctrl_info,void ** buffer)1222 static inline int pqi_report_logical_luns(struct pqi_ctrl_info *ctrl_info, void **buffer)
1223 {
1224 return pqi_report_phys_logical_luns(ctrl_info, CISS_REPORT_LOG, buffer);
1225 }
1226
pqi_get_device_lists(struct pqi_ctrl_info * ctrl_info,struct report_phys_lun_16byte_wwid_list ** physdev_list,struct report_log_lun_list ** logdev_list)1227 static int pqi_get_device_lists(struct pqi_ctrl_info *ctrl_info,
1228 struct report_phys_lun_16byte_wwid_list **physdev_list,
1229 struct report_log_lun_list **logdev_list)
1230 {
1231 int rc;
1232 size_t logdev_list_length;
1233 size_t logdev_data_length;
1234 struct report_log_lun_list *internal_logdev_list;
1235 struct report_log_lun_list *logdev_data;
1236 struct report_lun_header report_lun_header;
1237
1238 rc = pqi_report_phys_luns(ctrl_info, (void **)physdev_list);
1239 if (rc)
1240 dev_err(&ctrl_info->pci_dev->dev,
1241 "report physical LUNs failed\n");
1242
1243 rc = pqi_report_logical_luns(ctrl_info, (void **)logdev_list);
1244 if (rc)
1245 dev_err(&ctrl_info->pci_dev->dev,
1246 "report logical LUNs failed\n");
1247
1248 /*
1249 * Tack the controller itself onto the end of the logical device list.
1250 */
1251
1252 logdev_data = *logdev_list;
1253
1254 if (logdev_data) {
1255 logdev_list_length =
1256 get_unaligned_be32(&logdev_data->header.list_length);
1257 } else {
1258 memset(&report_lun_header, 0, sizeof(report_lun_header));
1259 logdev_data =
1260 (struct report_log_lun_list *)&report_lun_header;
1261 logdev_list_length = 0;
1262 }
1263
1264 logdev_data_length = sizeof(struct report_lun_header) +
1265 logdev_list_length;
1266
1267 internal_logdev_list = kmalloc(logdev_data_length +
1268 sizeof(struct report_log_lun), GFP_KERNEL);
1269 if (!internal_logdev_list) {
1270 kfree(*logdev_list);
1271 *logdev_list = NULL;
1272 return -ENOMEM;
1273 }
1274
1275 memcpy(internal_logdev_list, logdev_data, logdev_data_length);
1276 memset((u8 *)internal_logdev_list + logdev_data_length, 0,
1277 sizeof(struct report_log_lun));
1278 put_unaligned_be32(logdev_list_length +
1279 sizeof(struct report_log_lun),
1280 &internal_logdev_list->header.list_length);
1281
1282 kfree(*logdev_list);
1283 *logdev_list = internal_logdev_list;
1284
1285 return 0;
1286 }
1287
pqi_set_bus_target_lun(struct pqi_scsi_dev * device,int bus,int target,int lun)1288 static inline void pqi_set_bus_target_lun(struct pqi_scsi_dev *device,
1289 int bus, int target, int lun)
1290 {
1291 device->bus = bus;
1292 device->target = target;
1293 device->lun = lun;
1294 }
1295
pqi_assign_bus_target_lun(struct pqi_scsi_dev * device)1296 static void pqi_assign_bus_target_lun(struct pqi_scsi_dev *device)
1297 {
1298 u8 *scsi3addr;
1299 u32 lunid;
1300 int bus;
1301 int target;
1302 int lun;
1303
1304 scsi3addr = device->scsi3addr;
1305 lunid = get_unaligned_le32(scsi3addr);
1306
1307 if (pqi_is_hba_lunid(scsi3addr)) {
1308 /* The specified device is the controller. */
1309 pqi_set_bus_target_lun(device, PQI_HBA_BUS, 0, lunid & 0x3fff);
1310 device->target_lun_valid = true;
1311 return;
1312 }
1313
1314 if (pqi_is_logical_device(device)) {
1315 if (device->is_external_raid_device) {
1316 bus = PQI_EXTERNAL_RAID_VOLUME_BUS;
1317 target = (lunid >> 16) & 0x3fff;
1318 lun = lunid & 0xff;
1319 } else {
1320 bus = PQI_RAID_VOLUME_BUS;
1321 target = 0;
1322 lun = lunid & 0x3fff;
1323 }
1324 pqi_set_bus_target_lun(device, bus, target, lun);
1325 device->target_lun_valid = true;
1326 return;
1327 }
1328
1329 /*
1330 * Defer target and LUN assignment for non-controller physical devices
1331 * because the SAS transport layer will make these assignments later.
1332 */
1333 pqi_set_bus_target_lun(device, PQI_PHYSICAL_DEVICE_BUS, 0, 0);
1334 }
1335
pqi_get_raid_level(struct pqi_ctrl_info * ctrl_info,struct pqi_scsi_dev * device)1336 static void pqi_get_raid_level(struct pqi_ctrl_info *ctrl_info,
1337 struct pqi_scsi_dev *device)
1338 {
1339 int rc;
1340 u8 raid_level;
1341 u8 *buffer;
1342
1343 raid_level = SA_RAID_UNKNOWN;
1344
1345 buffer = kmalloc(64, GFP_KERNEL);
1346 if (buffer) {
1347 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr,
1348 VPD_PAGE | CISS_VPD_LV_DEVICE_GEOMETRY, buffer, 64);
1349 if (rc == 0) {
1350 raid_level = buffer[8];
1351 if (raid_level > SA_RAID_MAX)
1352 raid_level = SA_RAID_UNKNOWN;
1353 }
1354 kfree(buffer);
1355 }
1356
1357 device->raid_level = raid_level;
1358 }
1359
pqi_validate_raid_map(struct pqi_ctrl_info * ctrl_info,struct pqi_scsi_dev * device,struct raid_map * raid_map)1360 static int pqi_validate_raid_map(struct pqi_ctrl_info *ctrl_info,
1361 struct pqi_scsi_dev *device, struct raid_map *raid_map)
1362 {
1363 char *err_msg;
1364 u32 raid_map_size;
1365 u32 r5or6_blocks_per_row;
1366
1367 raid_map_size = get_unaligned_le32(&raid_map->structure_size);
1368
1369 if (raid_map_size < offsetof(struct raid_map, disk_data)) {
1370 err_msg = "RAID map too small";
1371 goto bad_raid_map;
1372 }
1373
1374 if (device->raid_level == SA_RAID_1) {
1375 if (get_unaligned_le16(&raid_map->layout_map_count) != 2) {
1376 err_msg = "invalid RAID-1 map";
1377 goto bad_raid_map;
1378 }
1379 } else if (device->raid_level == SA_RAID_TRIPLE) {
1380 if (get_unaligned_le16(&raid_map->layout_map_count) != 3) {
1381 err_msg = "invalid RAID-1(Triple) map";
1382 goto bad_raid_map;
1383 }
1384 } else if ((device->raid_level == SA_RAID_5 ||
1385 device->raid_level == SA_RAID_6) &&
1386 get_unaligned_le16(&raid_map->layout_map_count) > 1) {
1387 /* RAID 50/60 */
1388 r5or6_blocks_per_row =
1389 get_unaligned_le16(&raid_map->strip_size) *
1390 get_unaligned_le16(&raid_map->data_disks_per_row);
1391 if (r5or6_blocks_per_row == 0) {
1392 err_msg = "invalid RAID-5 or RAID-6 map";
1393 goto bad_raid_map;
1394 }
1395 }
1396
1397 return 0;
1398
1399 bad_raid_map:
1400 dev_warn(&ctrl_info->pci_dev->dev,
1401 "logical device %08x%08x %s\n",
1402 *((u32 *)&device->scsi3addr),
1403 *((u32 *)&device->scsi3addr[4]), err_msg);
1404
1405 return -EINVAL;
1406 }
1407
pqi_get_raid_map(struct pqi_ctrl_info * ctrl_info,struct pqi_scsi_dev * device)1408 static int pqi_get_raid_map(struct pqi_ctrl_info *ctrl_info,
1409 struct pqi_scsi_dev *device)
1410 {
1411 int rc;
1412 u32 raid_map_size;
1413 struct raid_map *raid_map;
1414
1415 raid_map = kmalloc(sizeof(*raid_map), GFP_KERNEL);
1416 if (!raid_map)
1417 return -ENOMEM;
1418
1419 rc = pqi_send_scsi_raid_request(ctrl_info, CISS_GET_RAID_MAP,
1420 device->scsi3addr, raid_map, sizeof(*raid_map), 0, NULL);
1421 if (rc)
1422 goto error;
1423
1424 raid_map_size = get_unaligned_le32(&raid_map->structure_size);
1425
1426 if (raid_map_size > sizeof(*raid_map)) {
1427
1428 kfree(raid_map);
1429
1430 raid_map = kmalloc(raid_map_size, GFP_KERNEL);
1431 if (!raid_map)
1432 return -ENOMEM;
1433
1434 rc = pqi_send_scsi_raid_request(ctrl_info, CISS_GET_RAID_MAP,
1435 device->scsi3addr, raid_map, raid_map_size, 0, NULL);
1436 if (rc)
1437 goto error;
1438
1439 if (get_unaligned_le32(&raid_map->structure_size)
1440 != raid_map_size) {
1441 dev_warn(&ctrl_info->pci_dev->dev,
1442 "requested %u bytes, received %u bytes\n",
1443 raid_map_size,
1444 get_unaligned_le32(&raid_map->structure_size));
1445 rc = -EINVAL;
1446 goto error;
1447 }
1448 }
1449
1450 rc = pqi_validate_raid_map(ctrl_info, device, raid_map);
1451 if (rc)
1452 goto error;
1453
1454 device->raid_map = raid_map;
1455
1456 return 0;
1457
1458 error:
1459 kfree(raid_map);
1460
1461 return rc;
1462 }
1463
pqi_set_max_transfer_encrypted(struct pqi_ctrl_info * ctrl_info,struct pqi_scsi_dev * device)1464 static void pqi_set_max_transfer_encrypted(struct pqi_ctrl_info *ctrl_info,
1465 struct pqi_scsi_dev *device)
1466 {
1467 if (!ctrl_info->lv_drive_type_mix_valid) {
1468 device->max_transfer_encrypted = ~0;
1469 return;
1470 }
1471
1472 switch (LV_GET_DRIVE_TYPE_MIX(device->scsi3addr)) {
1473 case LV_DRIVE_TYPE_MIX_SAS_HDD_ONLY:
1474 case LV_DRIVE_TYPE_MIX_SATA_HDD_ONLY:
1475 case LV_DRIVE_TYPE_MIX_SAS_OR_SATA_SSD_ONLY:
1476 case LV_DRIVE_TYPE_MIX_SAS_SSD_ONLY:
1477 case LV_DRIVE_TYPE_MIX_SATA_SSD_ONLY:
1478 case LV_DRIVE_TYPE_MIX_SAS_ONLY:
1479 case LV_DRIVE_TYPE_MIX_SATA_ONLY:
1480 device->max_transfer_encrypted =
1481 ctrl_info->max_transfer_encrypted_sas_sata;
1482 break;
1483 case LV_DRIVE_TYPE_MIX_NVME_ONLY:
1484 device->max_transfer_encrypted =
1485 ctrl_info->max_transfer_encrypted_nvme;
1486 break;
1487 case LV_DRIVE_TYPE_MIX_UNKNOWN:
1488 case LV_DRIVE_TYPE_MIX_NO_RESTRICTION:
1489 default:
1490 device->max_transfer_encrypted =
1491 min(ctrl_info->max_transfer_encrypted_sas_sata,
1492 ctrl_info->max_transfer_encrypted_nvme);
1493 break;
1494 }
1495 }
1496
pqi_get_raid_bypass_status(struct pqi_ctrl_info * ctrl_info,struct pqi_scsi_dev * device)1497 static void pqi_get_raid_bypass_status(struct pqi_ctrl_info *ctrl_info,
1498 struct pqi_scsi_dev *device)
1499 {
1500 int rc;
1501 u8 *buffer;
1502 u8 bypass_status;
1503
1504 buffer = kmalloc(64, GFP_KERNEL);
1505 if (!buffer)
1506 return;
1507
1508 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr,
1509 VPD_PAGE | CISS_VPD_LV_BYPASS_STATUS, buffer, 64);
1510 if (rc)
1511 goto out;
1512
1513 #define RAID_BYPASS_STATUS 4
1514 #define RAID_BYPASS_CONFIGURED 0x1
1515 #define RAID_BYPASS_ENABLED 0x2
1516
1517 bypass_status = buffer[RAID_BYPASS_STATUS];
1518 device->raid_bypass_configured =
1519 (bypass_status & RAID_BYPASS_CONFIGURED) != 0;
1520 if (device->raid_bypass_configured &&
1521 (bypass_status & RAID_BYPASS_ENABLED) &&
1522 pqi_get_raid_map(ctrl_info, device) == 0) {
1523 device->raid_bypass_enabled = true;
1524 if (get_unaligned_le16(&device->raid_map->flags) &
1525 RAID_MAP_ENCRYPTION_ENABLED)
1526 pqi_set_max_transfer_encrypted(ctrl_info, device);
1527 }
1528
1529 out:
1530 kfree(buffer);
1531 }
1532
1533 /*
1534 * Use vendor-specific VPD to determine online/offline status of a volume.
1535 */
1536
pqi_get_volume_status(struct pqi_ctrl_info * ctrl_info,struct pqi_scsi_dev * device)1537 static void pqi_get_volume_status(struct pqi_ctrl_info *ctrl_info,
1538 struct pqi_scsi_dev *device)
1539 {
1540 int rc;
1541 size_t page_length;
1542 u8 volume_status = CISS_LV_STATUS_UNAVAILABLE;
1543 bool volume_offline = true;
1544 u32 volume_flags;
1545 struct ciss_vpd_logical_volume_status *vpd;
1546
1547 vpd = kmalloc(sizeof(*vpd), GFP_KERNEL);
1548 if (!vpd)
1549 goto no_buffer;
1550
1551 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr,
1552 VPD_PAGE | CISS_VPD_LV_STATUS, vpd, sizeof(*vpd));
1553 if (rc)
1554 goto out;
1555
1556 if (vpd->page_code != CISS_VPD_LV_STATUS)
1557 goto out;
1558
1559 page_length = offsetof(struct ciss_vpd_logical_volume_status,
1560 volume_status) + vpd->page_length;
1561 if (page_length < sizeof(*vpd))
1562 goto out;
1563
1564 volume_status = vpd->volume_status;
1565 volume_flags = get_unaligned_be32(&vpd->flags);
1566 volume_offline = (volume_flags & CISS_LV_FLAGS_NO_HOST_IO) != 0;
1567
1568 out:
1569 kfree(vpd);
1570 no_buffer:
1571 device->volume_status = volume_status;
1572 device->volume_offline = volume_offline;
1573 }
1574
1575 #define PQI_DEVICE_NCQ_PRIO_SUPPORTED 0x01
1576 #define PQI_DEVICE_PHY_MAP_SUPPORTED 0x10
1577
pqi_get_physical_device_info(struct pqi_ctrl_info * ctrl_info,struct pqi_scsi_dev * device,struct bmic_identify_physical_device * id_phys)1578 static int pqi_get_physical_device_info(struct pqi_ctrl_info *ctrl_info,
1579 struct pqi_scsi_dev *device,
1580 struct bmic_identify_physical_device *id_phys)
1581 {
1582 int rc;
1583
1584 memset(id_phys, 0, sizeof(*id_phys));
1585
1586 rc = pqi_identify_physical_device(ctrl_info, device,
1587 id_phys, sizeof(*id_phys));
1588 if (rc) {
1589 device->queue_depth = PQI_PHYSICAL_DISK_DEFAULT_MAX_QUEUE_DEPTH;
1590 return rc;
1591 }
1592
1593 scsi_sanitize_inquiry_string(&id_phys->model[0], 8);
1594 scsi_sanitize_inquiry_string(&id_phys->model[8], 16);
1595
1596 memcpy(device->vendor, &id_phys->model[0], sizeof(device->vendor));
1597 memcpy(device->model, &id_phys->model[8], sizeof(device->model));
1598
1599 device->box_index = id_phys->box_index;
1600 device->phys_box_on_bus = id_phys->phys_box_on_bus;
1601 device->phy_connected_dev_type = id_phys->phy_connected_dev_type[0];
1602 device->queue_depth =
1603 get_unaligned_le16(&id_phys->current_queue_depth_limit);
1604 device->active_path_index = id_phys->active_path_number;
1605 device->path_map = id_phys->redundant_path_present_map;
1606 memcpy(&device->box,
1607 &id_phys->alternate_paths_phys_box_on_port,
1608 sizeof(device->box));
1609 memcpy(&device->phys_connector,
1610 &id_phys->alternate_paths_phys_connector,
1611 sizeof(device->phys_connector));
1612 device->bay = id_phys->phys_bay_in_box;
1613 device->multi_lun_device_lun_count = id_phys->multi_lun_device_lun_count;
1614 if (!device->multi_lun_device_lun_count)
1615 device->multi_lun_device_lun_count = 1;
1616 if ((id_phys->even_more_flags & PQI_DEVICE_PHY_MAP_SUPPORTED) &&
1617 id_phys->phy_count)
1618 device->phy_id =
1619 id_phys->phy_to_phy_map[device->active_path_index];
1620 else
1621 device->phy_id = 0xFF;
1622
1623 device->ncq_prio_support =
1624 ((get_unaligned_le32(&id_phys->misc_drive_flags) >> 16) &
1625 PQI_DEVICE_NCQ_PRIO_SUPPORTED);
1626
1627 return 0;
1628 }
1629
pqi_get_logical_device_info(struct pqi_ctrl_info * ctrl_info,struct pqi_scsi_dev * device)1630 static int pqi_get_logical_device_info(struct pqi_ctrl_info *ctrl_info,
1631 struct pqi_scsi_dev *device)
1632 {
1633 int rc;
1634 u8 *buffer;
1635
1636 buffer = kmalloc(64, GFP_KERNEL);
1637 if (!buffer)
1638 return -ENOMEM;
1639
1640 /* Send an inquiry to the device to see what it is. */
1641 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr, 0, buffer, 64);
1642 if (rc)
1643 goto out;
1644
1645 scsi_sanitize_inquiry_string(&buffer[8], 8);
1646 scsi_sanitize_inquiry_string(&buffer[16], 16);
1647
1648 device->devtype = buffer[0] & 0x1f;
1649 memcpy(device->vendor, &buffer[8], sizeof(device->vendor));
1650 memcpy(device->model, &buffer[16], sizeof(device->model));
1651
1652 if (device->devtype == TYPE_DISK) {
1653 if (device->is_external_raid_device) {
1654 device->raid_level = SA_RAID_UNKNOWN;
1655 device->volume_status = CISS_LV_OK;
1656 device->volume_offline = false;
1657 } else {
1658 pqi_get_raid_level(ctrl_info, device);
1659 pqi_get_raid_bypass_status(ctrl_info, device);
1660 pqi_get_volume_status(ctrl_info, device);
1661 }
1662 }
1663
1664 out:
1665 kfree(buffer);
1666
1667 return rc;
1668 }
1669
1670 /*
1671 * Prevent adding drive to OS for some corner cases such as a drive
1672 * undergoing a sanitize operation. Some OSes will continue to poll
1673 * the drive until the sanitize completes, which can take hours,
1674 * resulting in long bootup delays. Commands such as TUR, READ_CAP
1675 * are allowed, but READ/WRITE cause check condition. So the OS
1676 * cannot check/read the partition table.
1677 * Note: devices that have completed sanitize must be re-enabled
1678 * using the management utility.
1679 */
pqi_keep_device_offline(struct pqi_ctrl_info * ctrl_info,struct pqi_scsi_dev * device)1680 static bool pqi_keep_device_offline(struct pqi_ctrl_info *ctrl_info,
1681 struct pqi_scsi_dev *device)
1682 {
1683 u8 scsi_status;
1684 int rc;
1685 enum dma_data_direction dir;
1686 char *buffer;
1687 int buffer_length = 64;
1688 size_t sense_data_length;
1689 struct scsi_sense_hdr sshdr;
1690 struct pqi_raid_path_request request;
1691 struct pqi_raid_error_info error_info;
1692 bool offline = false; /* Assume keep online */
1693
1694 /* Do not check controllers. */
1695 if (pqi_is_hba_lunid(device->scsi3addr))
1696 return false;
1697
1698 /* Do not check LVs. */
1699 if (pqi_is_logical_device(device))
1700 return false;
1701
1702 buffer = kmalloc(buffer_length, GFP_KERNEL);
1703 if (!buffer)
1704 return false; /* Assume not offline */
1705
1706 /* Check for SANITIZE in progress using TUR */
1707 rc = pqi_build_raid_path_request(ctrl_info, &request,
1708 TEST_UNIT_READY, RAID_CTLR_LUNID, buffer,
1709 buffer_length, 0, &dir);
1710 if (rc)
1711 goto out; /* Assume not offline */
1712
1713 memcpy(request.lun_number, device->scsi3addr, sizeof(request.lun_number));
1714
1715 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0, &error_info);
1716
1717 if (rc)
1718 goto out; /* Assume not offline */
1719
1720 scsi_status = error_info.status;
1721 sense_data_length = get_unaligned_le16(&error_info.sense_data_length);
1722 if (sense_data_length == 0)
1723 sense_data_length =
1724 get_unaligned_le16(&error_info.response_data_length);
1725 if (sense_data_length) {
1726 if (sense_data_length > sizeof(error_info.data))
1727 sense_data_length = sizeof(error_info.data);
1728
1729 /*
1730 * Check for sanitize in progress: asc:0x04, ascq: 0x1b
1731 */
1732 if (scsi_status == SAM_STAT_CHECK_CONDITION &&
1733 scsi_normalize_sense(error_info.data,
1734 sense_data_length, &sshdr) &&
1735 sshdr.sense_key == NOT_READY &&
1736 sshdr.asc == 0x04 &&
1737 sshdr.ascq == 0x1b) {
1738 device->device_offline = true;
1739 offline = true;
1740 goto out; /* Keep device offline */
1741 }
1742 }
1743
1744 out:
1745 kfree(buffer);
1746 return offline;
1747 }
1748
pqi_get_device_info(struct pqi_ctrl_info * ctrl_info,struct pqi_scsi_dev * device,struct bmic_identify_physical_device * id_phys)1749 static int pqi_get_device_info(struct pqi_ctrl_info *ctrl_info,
1750 struct pqi_scsi_dev *device,
1751 struct bmic_identify_physical_device *id_phys)
1752 {
1753 int rc;
1754
1755 if (device->is_expander_smp_device)
1756 return 0;
1757
1758 if (pqi_is_logical_device(device))
1759 rc = pqi_get_logical_device_info(ctrl_info, device);
1760 else
1761 rc = pqi_get_physical_device_info(ctrl_info, device, id_phys);
1762
1763 return rc;
1764 }
1765
pqi_show_volume_status(struct pqi_ctrl_info * ctrl_info,struct pqi_scsi_dev * device)1766 static void pqi_show_volume_status(struct pqi_ctrl_info *ctrl_info,
1767 struct pqi_scsi_dev *device)
1768 {
1769 char *status;
1770 static const char unknown_state_str[] =
1771 "Volume is in an unknown state (%u)";
1772 char unknown_state_buffer[sizeof(unknown_state_str) + 10];
1773
1774 switch (device->volume_status) {
1775 case CISS_LV_OK:
1776 status = "Volume online";
1777 break;
1778 case CISS_LV_FAILED:
1779 status = "Volume failed";
1780 break;
1781 case CISS_LV_NOT_CONFIGURED:
1782 status = "Volume not configured";
1783 break;
1784 case CISS_LV_DEGRADED:
1785 status = "Volume degraded";
1786 break;
1787 case CISS_LV_READY_FOR_RECOVERY:
1788 status = "Volume ready for recovery operation";
1789 break;
1790 case CISS_LV_UNDERGOING_RECOVERY:
1791 status = "Volume undergoing recovery";
1792 break;
1793 case CISS_LV_WRONG_PHYSICAL_DRIVE_REPLACED:
1794 status = "Wrong physical drive was replaced";
1795 break;
1796 case CISS_LV_PHYSICAL_DRIVE_CONNECTION_PROBLEM:
1797 status = "A physical drive not properly connected";
1798 break;
1799 case CISS_LV_HARDWARE_OVERHEATING:
1800 status = "Hardware is overheating";
1801 break;
1802 case CISS_LV_HARDWARE_HAS_OVERHEATED:
1803 status = "Hardware has overheated";
1804 break;
1805 case CISS_LV_UNDERGOING_EXPANSION:
1806 status = "Volume undergoing expansion";
1807 break;
1808 case CISS_LV_NOT_AVAILABLE:
1809 status = "Volume waiting for transforming volume";
1810 break;
1811 case CISS_LV_QUEUED_FOR_EXPANSION:
1812 status = "Volume queued for expansion";
1813 break;
1814 case CISS_LV_DISABLED_SCSI_ID_CONFLICT:
1815 status = "Volume disabled due to SCSI ID conflict";
1816 break;
1817 case CISS_LV_EJECTED:
1818 status = "Volume has been ejected";
1819 break;
1820 case CISS_LV_UNDERGOING_ERASE:
1821 status = "Volume undergoing background erase";
1822 break;
1823 case CISS_LV_READY_FOR_PREDICTIVE_SPARE_REBUILD:
1824 status = "Volume ready for predictive spare rebuild";
1825 break;
1826 case CISS_LV_UNDERGOING_RPI:
1827 status = "Volume undergoing rapid parity initialization";
1828 break;
1829 case CISS_LV_PENDING_RPI:
1830 status = "Volume queued for rapid parity initialization";
1831 break;
1832 case CISS_LV_ENCRYPTED_NO_KEY:
1833 status = "Encrypted volume inaccessible - key not present";
1834 break;
1835 case CISS_LV_UNDERGOING_ENCRYPTION:
1836 status = "Volume undergoing encryption process";
1837 break;
1838 case CISS_LV_UNDERGOING_ENCRYPTION_REKEYING:
1839 status = "Volume undergoing encryption re-keying process";
1840 break;
1841 case CISS_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER:
1842 status = "Volume encrypted but encryption is disabled";
1843 break;
1844 case CISS_LV_PENDING_ENCRYPTION:
1845 status = "Volume pending migration to encrypted state";
1846 break;
1847 case CISS_LV_PENDING_ENCRYPTION_REKEYING:
1848 status = "Volume pending encryption rekeying";
1849 break;
1850 case CISS_LV_NOT_SUPPORTED:
1851 status = "Volume not supported on this controller";
1852 break;
1853 case CISS_LV_STATUS_UNAVAILABLE:
1854 status = "Volume status not available";
1855 break;
1856 default:
1857 snprintf(unknown_state_buffer, sizeof(unknown_state_buffer),
1858 unknown_state_str, device->volume_status);
1859 status = unknown_state_buffer;
1860 break;
1861 }
1862
1863 dev_info(&ctrl_info->pci_dev->dev,
1864 "scsi %d:%d:%d:%d %s\n",
1865 ctrl_info->scsi_host->host_no,
1866 device->bus, device->target, device->lun, status);
1867 }
1868
pqi_rescan_worker(struct work_struct * work)1869 static void pqi_rescan_worker(struct work_struct *work)
1870 {
1871 struct pqi_ctrl_info *ctrl_info;
1872
1873 ctrl_info = container_of(to_delayed_work(work), struct pqi_ctrl_info,
1874 rescan_work);
1875
1876 pqi_scan_scsi_devices(ctrl_info);
1877 }
1878
pqi_add_device(struct pqi_ctrl_info * ctrl_info,struct pqi_scsi_dev * device)1879 static int pqi_add_device(struct pqi_ctrl_info *ctrl_info,
1880 struct pqi_scsi_dev *device)
1881 {
1882 int rc;
1883
1884 if (pqi_is_logical_device(device))
1885 rc = scsi_add_device(ctrl_info->scsi_host, device->bus,
1886 device->target, device->lun);
1887 else
1888 rc = pqi_add_sas_device(ctrl_info->sas_host, device);
1889
1890 return rc;
1891 }
1892
1893 #define PQI_REMOVE_DEVICE_PENDING_IO_TIMEOUT_MSECS (20 * 1000)
1894
pqi_remove_device(struct pqi_ctrl_info * ctrl_info,struct pqi_scsi_dev * device)1895 static inline void pqi_remove_device(struct pqi_ctrl_info *ctrl_info, struct pqi_scsi_dev *device)
1896 {
1897 int rc;
1898 int lun;
1899
1900 for (lun = 0; lun < device->multi_lun_device_lun_count; lun++) {
1901 rc = pqi_device_wait_for_pending_io(ctrl_info, device, lun,
1902 PQI_REMOVE_DEVICE_PENDING_IO_TIMEOUT_MSECS);
1903 if (rc)
1904 dev_err(&ctrl_info->pci_dev->dev,
1905 "scsi %d:%d:%d:%d removing device with %d outstanding command(s)\n",
1906 ctrl_info->scsi_host->host_no, device->bus,
1907 device->target, lun,
1908 atomic_read(&device->scsi_cmds_outstanding[lun]));
1909 }
1910
1911 if (pqi_is_logical_device(device))
1912 scsi_remove_device(device->sdev);
1913 else
1914 pqi_remove_sas_device(device);
1915
1916 pqi_device_remove_start(device);
1917 }
1918
1919 /* Assumes the SCSI device list lock is held. */
1920
pqi_find_scsi_dev(struct pqi_ctrl_info * ctrl_info,int bus,int target,int lun)1921 static struct pqi_scsi_dev *pqi_find_scsi_dev(struct pqi_ctrl_info *ctrl_info,
1922 int bus, int target, int lun)
1923 {
1924 struct pqi_scsi_dev *device;
1925
1926 list_for_each_entry(device, &ctrl_info->scsi_device_list, scsi_device_list_entry)
1927 if (device->bus == bus && device->target == target && device->lun == lun)
1928 return device;
1929
1930 return NULL;
1931 }
1932
pqi_device_equal(struct pqi_scsi_dev * dev1,struct pqi_scsi_dev * dev2)1933 static inline bool pqi_device_equal(struct pqi_scsi_dev *dev1, struct pqi_scsi_dev *dev2)
1934 {
1935 if (dev1->is_physical_device != dev2->is_physical_device)
1936 return false;
1937
1938 if (dev1->is_physical_device)
1939 return memcmp(dev1->wwid, dev2->wwid, sizeof(dev1->wwid)) == 0;
1940
1941 return memcmp(dev1->volume_id, dev2->volume_id, sizeof(dev1->volume_id)) == 0;
1942 }
1943
1944 enum pqi_find_result {
1945 DEVICE_NOT_FOUND,
1946 DEVICE_CHANGED,
1947 DEVICE_SAME,
1948 };
1949
pqi_scsi_find_entry(struct pqi_ctrl_info * ctrl_info,struct pqi_scsi_dev * device_to_find,struct pqi_scsi_dev ** matching_device)1950 static enum pqi_find_result pqi_scsi_find_entry(struct pqi_ctrl_info *ctrl_info,
1951 struct pqi_scsi_dev *device_to_find, struct pqi_scsi_dev **matching_device)
1952 {
1953 struct pqi_scsi_dev *device;
1954
1955 list_for_each_entry(device, &ctrl_info->scsi_device_list, scsi_device_list_entry) {
1956 if (pqi_scsi3addr_equal(device_to_find->scsi3addr, device->scsi3addr)) {
1957 *matching_device = device;
1958 if (pqi_device_equal(device_to_find, device)) {
1959 if (device_to_find->volume_offline)
1960 return DEVICE_CHANGED;
1961 return DEVICE_SAME;
1962 }
1963 return DEVICE_CHANGED;
1964 }
1965 }
1966
1967 return DEVICE_NOT_FOUND;
1968 }
1969
pqi_device_type(struct pqi_scsi_dev * device)1970 static inline const char *pqi_device_type(struct pqi_scsi_dev *device)
1971 {
1972 if (device->is_expander_smp_device)
1973 return "Enclosure SMP ";
1974
1975 return scsi_device_type(device->devtype);
1976 }
1977
1978 #define PQI_DEV_INFO_BUFFER_LENGTH 128
1979
pqi_dev_info(struct pqi_ctrl_info * ctrl_info,char * action,struct pqi_scsi_dev * device)1980 static void pqi_dev_info(struct pqi_ctrl_info *ctrl_info,
1981 char *action, struct pqi_scsi_dev *device)
1982 {
1983 ssize_t count;
1984 char buffer[PQI_DEV_INFO_BUFFER_LENGTH];
1985
1986 count = scnprintf(buffer, PQI_DEV_INFO_BUFFER_LENGTH,
1987 "%d:%d:", ctrl_info->scsi_host->host_no, device->bus);
1988
1989 if (device->target_lun_valid)
1990 count += scnprintf(buffer + count,
1991 PQI_DEV_INFO_BUFFER_LENGTH - count,
1992 "%d:%d",
1993 device->target,
1994 device->lun);
1995 else
1996 count += scnprintf(buffer + count,
1997 PQI_DEV_INFO_BUFFER_LENGTH - count,
1998 "-:-");
1999
2000 if (pqi_is_logical_device(device))
2001 count += scnprintf(buffer + count,
2002 PQI_DEV_INFO_BUFFER_LENGTH - count,
2003 " %08x%08x",
2004 *((u32 *)&device->scsi3addr),
2005 *((u32 *)&device->scsi3addr[4]));
2006 else
2007 count += scnprintf(buffer + count,
2008 PQI_DEV_INFO_BUFFER_LENGTH - count,
2009 " %016llx%016llx",
2010 get_unaligned_be64(&device->wwid[0]),
2011 get_unaligned_be64(&device->wwid[8]));
2012
2013 count += scnprintf(buffer + count, PQI_DEV_INFO_BUFFER_LENGTH - count,
2014 " %s %.8s %.16s ",
2015 pqi_device_type(device),
2016 device->vendor,
2017 device->model);
2018
2019 if (pqi_is_logical_device(device)) {
2020 if (device->devtype == TYPE_DISK)
2021 count += scnprintf(buffer + count,
2022 PQI_DEV_INFO_BUFFER_LENGTH - count,
2023 "SSDSmartPathCap%c En%c %-12s",
2024 device->raid_bypass_configured ? '+' : '-',
2025 device->raid_bypass_enabled ? '+' : '-',
2026 pqi_raid_level_to_string(device->raid_level));
2027 } else {
2028 count += scnprintf(buffer + count,
2029 PQI_DEV_INFO_BUFFER_LENGTH - count,
2030 "AIO%c", device->aio_enabled ? '+' : '-');
2031 if (device->devtype == TYPE_DISK ||
2032 device->devtype == TYPE_ZBC)
2033 count += scnprintf(buffer + count,
2034 PQI_DEV_INFO_BUFFER_LENGTH - count,
2035 " qd=%-6d", device->queue_depth);
2036 }
2037
2038 dev_info(&ctrl_info->pci_dev->dev, "%s %s\n", action, buffer);
2039 }
2040
pqi_raid_maps_equal(struct raid_map * raid_map1,struct raid_map * raid_map2)2041 static bool pqi_raid_maps_equal(struct raid_map *raid_map1, struct raid_map *raid_map2)
2042 {
2043 u32 raid_map1_size;
2044 u32 raid_map2_size;
2045
2046 if (raid_map1 == NULL || raid_map2 == NULL)
2047 return raid_map1 == raid_map2;
2048
2049 raid_map1_size = get_unaligned_le32(&raid_map1->structure_size);
2050 raid_map2_size = get_unaligned_le32(&raid_map2->structure_size);
2051
2052 if (raid_map1_size != raid_map2_size)
2053 return false;
2054
2055 return memcmp(raid_map1, raid_map2, raid_map1_size) == 0;
2056 }
2057
2058 /* Assumes the SCSI device list lock is held. */
2059
pqi_scsi_update_device(struct pqi_ctrl_info * ctrl_info,struct pqi_scsi_dev * existing_device,struct pqi_scsi_dev * new_device)2060 static void pqi_scsi_update_device(struct pqi_ctrl_info *ctrl_info,
2061 struct pqi_scsi_dev *existing_device, struct pqi_scsi_dev *new_device)
2062 {
2063 existing_device->device_type = new_device->device_type;
2064 existing_device->bus = new_device->bus;
2065 if (new_device->target_lun_valid) {
2066 existing_device->target = new_device->target;
2067 existing_device->lun = new_device->lun;
2068 existing_device->target_lun_valid = true;
2069 }
2070
2071 /* By definition, the scsi3addr and wwid fields are already the same. */
2072
2073 existing_device->is_physical_device = new_device->is_physical_device;
2074 memcpy(existing_device->vendor, new_device->vendor, sizeof(existing_device->vendor));
2075 memcpy(existing_device->model, new_device->model, sizeof(existing_device->model));
2076 existing_device->sas_address = new_device->sas_address;
2077 existing_device->queue_depth = new_device->queue_depth;
2078 existing_device->device_offline = false;
2079
2080 if (pqi_is_logical_device(existing_device)) {
2081 existing_device->is_external_raid_device = new_device->is_external_raid_device;
2082
2083 if (existing_device->devtype == TYPE_DISK) {
2084 existing_device->raid_level = new_device->raid_level;
2085 existing_device->volume_status = new_device->volume_status;
2086 if (ctrl_info->logical_volume_rescan_needed)
2087 existing_device->rescan = true;
2088 memset(existing_device->next_bypass_group, 0, sizeof(existing_device->next_bypass_group));
2089 if (!pqi_raid_maps_equal(existing_device->raid_map, new_device->raid_map)) {
2090 kfree(existing_device->raid_map);
2091 existing_device->raid_map = new_device->raid_map;
2092 /* To prevent this from being freed later. */
2093 new_device->raid_map = NULL;
2094 }
2095 existing_device->raid_bypass_configured = new_device->raid_bypass_configured;
2096 existing_device->raid_bypass_enabled = new_device->raid_bypass_enabled;
2097 }
2098 } else {
2099 existing_device->aio_enabled = new_device->aio_enabled;
2100 existing_device->aio_handle = new_device->aio_handle;
2101 existing_device->is_expander_smp_device = new_device->is_expander_smp_device;
2102 existing_device->active_path_index = new_device->active_path_index;
2103 existing_device->phy_id = new_device->phy_id;
2104 existing_device->path_map = new_device->path_map;
2105 existing_device->bay = new_device->bay;
2106 existing_device->box_index = new_device->box_index;
2107 existing_device->phys_box_on_bus = new_device->phys_box_on_bus;
2108 existing_device->phy_connected_dev_type = new_device->phy_connected_dev_type;
2109 memcpy(existing_device->box, new_device->box, sizeof(existing_device->box));
2110 memcpy(existing_device->phys_connector, new_device->phys_connector, sizeof(existing_device->phys_connector));
2111
2112 existing_device->multi_lun_device_lun_count = new_device->multi_lun_device_lun_count;
2113 if (existing_device->multi_lun_device_lun_count == 0)
2114 existing_device->multi_lun_device_lun_count = 1;
2115 }
2116 }
2117
pqi_free_device(struct pqi_scsi_dev * device)2118 static inline void pqi_free_device(struct pqi_scsi_dev *device)
2119 {
2120 if (device) {
2121 kfree(device->raid_map);
2122 kfree(device);
2123 }
2124 }
2125
2126 /*
2127 * Called when exposing a new device to the OS fails in order to re-adjust
2128 * our internal SCSI device list to match the SCSI ML's view.
2129 */
2130
pqi_fixup_botched_add(struct pqi_ctrl_info * ctrl_info,struct pqi_scsi_dev * device)2131 static inline void pqi_fixup_botched_add(struct pqi_ctrl_info *ctrl_info,
2132 struct pqi_scsi_dev *device)
2133 {
2134 unsigned long flags;
2135
2136 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
2137 list_del(&device->scsi_device_list_entry);
2138 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
2139
2140 /* Allow the device structure to be freed later. */
2141 device->keep_device = false;
2142 }
2143
pqi_is_device_added(struct pqi_scsi_dev * device)2144 static inline bool pqi_is_device_added(struct pqi_scsi_dev *device)
2145 {
2146 if (device->is_expander_smp_device)
2147 return device->sas_port != NULL;
2148
2149 return device->sdev != NULL;
2150 }
2151
pqi_update_device_list(struct pqi_ctrl_info * ctrl_info,struct pqi_scsi_dev * new_device_list[],unsigned int num_new_devices)2152 static void pqi_update_device_list(struct pqi_ctrl_info *ctrl_info,
2153 struct pqi_scsi_dev *new_device_list[], unsigned int num_new_devices)
2154 {
2155 int rc;
2156 unsigned int i;
2157 unsigned long flags;
2158 enum pqi_find_result find_result;
2159 struct pqi_scsi_dev *device;
2160 struct pqi_scsi_dev *next;
2161 struct pqi_scsi_dev *matching_device;
2162 LIST_HEAD(add_list);
2163 LIST_HEAD(delete_list);
2164
2165 /*
2166 * The idea here is to do as little work as possible while holding the
2167 * spinlock. That's why we go to great pains to defer anything other
2168 * than updating the internal device list until after we release the
2169 * spinlock.
2170 */
2171
2172 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
2173
2174 /* Assume that all devices in the existing list have gone away. */
2175 list_for_each_entry(device, &ctrl_info->scsi_device_list, scsi_device_list_entry)
2176 device->device_gone = true;
2177
2178 for (i = 0; i < num_new_devices; i++) {
2179 device = new_device_list[i];
2180
2181 find_result = pqi_scsi_find_entry(ctrl_info, device,
2182 &matching_device);
2183
2184 switch (find_result) {
2185 case DEVICE_SAME:
2186 /*
2187 * The newly found device is already in the existing
2188 * device list.
2189 */
2190 device->new_device = false;
2191 matching_device->device_gone = false;
2192 pqi_scsi_update_device(ctrl_info, matching_device, device);
2193 break;
2194 case DEVICE_NOT_FOUND:
2195 /*
2196 * The newly found device is NOT in the existing device
2197 * list.
2198 */
2199 device->new_device = true;
2200 break;
2201 case DEVICE_CHANGED:
2202 /*
2203 * The original device has gone away and we need to add
2204 * the new device.
2205 */
2206 device->new_device = true;
2207 break;
2208 }
2209 }
2210
2211 /* Process all devices that have gone away. */
2212 list_for_each_entry_safe(device, next, &ctrl_info->scsi_device_list,
2213 scsi_device_list_entry) {
2214 if (device->device_gone) {
2215 list_del(&device->scsi_device_list_entry);
2216 list_add_tail(&device->delete_list_entry, &delete_list);
2217 }
2218 }
2219
2220 /* Process all new devices. */
2221 for (i = 0; i < num_new_devices; i++) {
2222 device = new_device_list[i];
2223 if (!device->new_device)
2224 continue;
2225 if (device->volume_offline)
2226 continue;
2227 list_add_tail(&device->scsi_device_list_entry,
2228 &ctrl_info->scsi_device_list);
2229 list_add_tail(&device->add_list_entry, &add_list);
2230 /* To prevent this device structure from being freed later. */
2231 device->keep_device = true;
2232 }
2233
2234 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
2235
2236 /*
2237 * If OFA is in progress and there are devices that need to be deleted,
2238 * allow any pending reset operations to continue and unblock any SCSI
2239 * requests before removal.
2240 */
2241 if (pqi_ofa_in_progress(ctrl_info)) {
2242 list_for_each_entry_safe(device, next, &delete_list, delete_list_entry)
2243 if (pqi_is_device_added(device))
2244 pqi_device_remove_start(device);
2245 pqi_ctrl_unblock_device_reset(ctrl_info);
2246 pqi_scsi_unblock_requests(ctrl_info);
2247 }
2248
2249 /* Remove all devices that have gone away. */
2250 list_for_each_entry_safe(device, next, &delete_list, delete_list_entry) {
2251 if (device->volume_offline) {
2252 pqi_dev_info(ctrl_info, "offline", device);
2253 pqi_show_volume_status(ctrl_info, device);
2254 } else {
2255 pqi_dev_info(ctrl_info, "removed", device);
2256 }
2257 if (pqi_is_device_added(device))
2258 pqi_remove_device(ctrl_info, device);
2259 list_del(&device->delete_list_entry);
2260 pqi_free_device(device);
2261 }
2262
2263 /*
2264 * Notify the SML of any existing device changes such as;
2265 * queue depth, device size.
2266 */
2267 list_for_each_entry(device, &ctrl_info->scsi_device_list, scsi_device_list_entry) {
2268 if (device->sdev && device->queue_depth != device->advertised_queue_depth) {
2269 device->advertised_queue_depth = device->queue_depth;
2270 scsi_change_queue_depth(device->sdev, device->advertised_queue_depth);
2271 if (device->rescan) {
2272 scsi_rescan_device(&device->sdev->sdev_gendev);
2273 device->rescan = false;
2274 }
2275 }
2276 }
2277
2278 /* Expose any new devices. */
2279 list_for_each_entry_safe(device, next, &add_list, add_list_entry) {
2280 if (!pqi_is_device_added(device)) {
2281 rc = pqi_add_device(ctrl_info, device);
2282 if (rc == 0) {
2283 pqi_dev_info(ctrl_info, "added", device);
2284 } else {
2285 dev_warn(&ctrl_info->pci_dev->dev,
2286 "scsi %d:%d:%d:%d addition failed, device not added\n",
2287 ctrl_info->scsi_host->host_no,
2288 device->bus, device->target,
2289 device->lun);
2290 pqi_fixup_botched_add(ctrl_info, device);
2291 }
2292 }
2293 }
2294
2295 ctrl_info->logical_volume_rescan_needed = false;
2296
2297 }
2298
pqi_is_supported_device(struct pqi_scsi_dev * device)2299 static inline bool pqi_is_supported_device(struct pqi_scsi_dev *device)
2300 {
2301 /*
2302 * Only support the HBA controller itself as a RAID
2303 * controller. If it's a RAID controller other than
2304 * the HBA itself (an external RAID controller, for
2305 * example), we don't support it.
2306 */
2307 if (device->device_type == SA_DEVICE_TYPE_CONTROLLER &&
2308 !pqi_is_hba_lunid(device->scsi3addr))
2309 return false;
2310
2311 return true;
2312 }
2313
pqi_skip_device(u8 * scsi3addr)2314 static inline bool pqi_skip_device(u8 *scsi3addr)
2315 {
2316 /* Ignore all masked devices. */
2317 if (MASKED_DEVICE(scsi3addr))
2318 return true;
2319
2320 return false;
2321 }
2322
pqi_mask_device(u8 * scsi3addr)2323 static inline void pqi_mask_device(u8 *scsi3addr)
2324 {
2325 scsi3addr[3] |= 0xc0;
2326 }
2327
pqi_is_multipath_device(struct pqi_scsi_dev * device)2328 static inline bool pqi_is_multipath_device(struct pqi_scsi_dev *device)
2329 {
2330 if (pqi_is_logical_device(device))
2331 return false;
2332
2333 return (device->path_map & (device->path_map - 1)) != 0;
2334 }
2335
pqi_expose_device(struct pqi_scsi_dev * device)2336 static inline bool pqi_expose_device(struct pqi_scsi_dev *device)
2337 {
2338 return !device->is_physical_device || !pqi_skip_device(device->scsi3addr);
2339 }
2340
pqi_update_scsi_devices(struct pqi_ctrl_info * ctrl_info)2341 static int pqi_update_scsi_devices(struct pqi_ctrl_info *ctrl_info)
2342 {
2343 int i;
2344 int rc;
2345 LIST_HEAD(new_device_list_head);
2346 struct report_phys_lun_16byte_wwid_list *physdev_list = NULL;
2347 struct report_log_lun_list *logdev_list = NULL;
2348 struct report_phys_lun_16byte_wwid *phys_lun;
2349 struct report_log_lun *log_lun;
2350 struct bmic_identify_physical_device *id_phys = NULL;
2351 u32 num_physicals;
2352 u32 num_logicals;
2353 struct pqi_scsi_dev **new_device_list = NULL;
2354 struct pqi_scsi_dev *device;
2355 struct pqi_scsi_dev *next;
2356 unsigned int num_new_devices;
2357 unsigned int num_valid_devices;
2358 bool is_physical_device;
2359 u8 *scsi3addr;
2360 unsigned int physical_index;
2361 unsigned int logical_index;
2362 static char *out_of_memory_msg =
2363 "failed to allocate memory, device discovery stopped";
2364
2365 rc = pqi_get_device_lists(ctrl_info, &physdev_list, &logdev_list);
2366 if (rc)
2367 goto out;
2368
2369 if (physdev_list)
2370 num_physicals =
2371 get_unaligned_be32(&physdev_list->header.list_length)
2372 / sizeof(physdev_list->lun_entries[0]);
2373 else
2374 num_physicals = 0;
2375
2376 if (logdev_list)
2377 num_logicals =
2378 get_unaligned_be32(&logdev_list->header.list_length)
2379 / sizeof(logdev_list->lun_entries[0]);
2380 else
2381 num_logicals = 0;
2382
2383 if (num_physicals) {
2384 /*
2385 * We need this buffer for calls to pqi_get_physical_disk_info()
2386 * below. We allocate it here instead of inside
2387 * pqi_get_physical_disk_info() because it's a fairly large
2388 * buffer.
2389 */
2390 id_phys = kmalloc(sizeof(*id_phys), GFP_KERNEL);
2391 if (!id_phys) {
2392 dev_warn(&ctrl_info->pci_dev->dev, "%s\n",
2393 out_of_memory_msg);
2394 rc = -ENOMEM;
2395 goto out;
2396 }
2397
2398 if (pqi_hide_vsep) {
2399 for (i = num_physicals - 1; i >= 0; i--) {
2400 phys_lun = &physdev_list->lun_entries[i];
2401 if (CISS_GET_DRIVE_NUMBER(phys_lun->lunid) == PQI_VSEP_CISS_BTL) {
2402 pqi_mask_device(phys_lun->lunid);
2403 break;
2404 }
2405 }
2406 }
2407 }
2408
2409 if (num_logicals &&
2410 (logdev_list->header.flags & CISS_REPORT_LOG_FLAG_DRIVE_TYPE_MIX))
2411 ctrl_info->lv_drive_type_mix_valid = true;
2412
2413 num_new_devices = num_physicals + num_logicals;
2414
2415 new_device_list = kmalloc_array(num_new_devices,
2416 sizeof(*new_device_list),
2417 GFP_KERNEL);
2418 if (!new_device_list) {
2419 dev_warn(&ctrl_info->pci_dev->dev, "%s\n", out_of_memory_msg);
2420 rc = -ENOMEM;
2421 goto out;
2422 }
2423
2424 for (i = 0; i < num_new_devices; i++) {
2425 device = kzalloc(sizeof(*device), GFP_KERNEL);
2426 if (!device) {
2427 dev_warn(&ctrl_info->pci_dev->dev, "%s\n",
2428 out_of_memory_msg);
2429 rc = -ENOMEM;
2430 goto out;
2431 }
2432 list_add_tail(&device->new_device_list_entry,
2433 &new_device_list_head);
2434 }
2435
2436 device = NULL;
2437 num_valid_devices = 0;
2438 physical_index = 0;
2439 logical_index = 0;
2440
2441 for (i = 0; i < num_new_devices; i++) {
2442
2443 if ((!pqi_expose_ld_first && i < num_physicals) ||
2444 (pqi_expose_ld_first && i >= num_logicals)) {
2445 is_physical_device = true;
2446 phys_lun = &physdev_list->lun_entries[physical_index++];
2447 log_lun = NULL;
2448 scsi3addr = phys_lun->lunid;
2449 } else {
2450 is_physical_device = false;
2451 phys_lun = NULL;
2452 log_lun = &logdev_list->lun_entries[logical_index++];
2453 scsi3addr = log_lun->lunid;
2454 }
2455
2456 if (is_physical_device && pqi_skip_device(scsi3addr))
2457 continue;
2458
2459 if (device)
2460 device = list_next_entry(device, new_device_list_entry);
2461 else
2462 device = list_first_entry(&new_device_list_head,
2463 struct pqi_scsi_dev, new_device_list_entry);
2464
2465 memcpy(device->scsi3addr, scsi3addr, sizeof(device->scsi3addr));
2466 device->is_physical_device = is_physical_device;
2467 if (is_physical_device) {
2468 device->device_type = phys_lun->device_type;
2469 if (device->device_type == SA_DEVICE_TYPE_EXPANDER_SMP)
2470 device->is_expander_smp_device = true;
2471 } else {
2472 device->is_external_raid_device =
2473 pqi_is_external_raid_addr(scsi3addr);
2474 }
2475
2476 if (!pqi_is_supported_device(device))
2477 continue;
2478
2479 /* Do not present disks that the OS cannot fully probe */
2480 if (pqi_keep_device_offline(ctrl_info, device))
2481 continue;
2482
2483 /* Gather information about the device. */
2484 rc = pqi_get_device_info(ctrl_info, device, id_phys);
2485 if (rc == -ENOMEM) {
2486 dev_warn(&ctrl_info->pci_dev->dev, "%s\n",
2487 out_of_memory_msg);
2488 goto out;
2489 }
2490 if (rc) {
2491 if (device->is_physical_device)
2492 dev_warn(&ctrl_info->pci_dev->dev,
2493 "obtaining device info failed, skipping physical device %016llx%016llx\n",
2494 get_unaligned_be64(&phys_lun->wwid[0]),
2495 get_unaligned_be64(&phys_lun->wwid[8]));
2496 else
2497 dev_warn(&ctrl_info->pci_dev->dev,
2498 "obtaining device info failed, skipping logical device %08x%08x\n",
2499 *((u32 *)&device->scsi3addr),
2500 *((u32 *)&device->scsi3addr[4]));
2501 rc = 0;
2502 continue;
2503 }
2504
2505 pqi_assign_bus_target_lun(device);
2506
2507 if (device->is_physical_device) {
2508 memcpy(device->wwid, phys_lun->wwid, sizeof(device->wwid));
2509 if ((phys_lun->device_flags &
2510 CISS_REPORT_PHYS_DEV_FLAG_AIO_ENABLED) &&
2511 phys_lun->aio_handle) {
2512 device->aio_enabled = true;
2513 device->aio_handle =
2514 phys_lun->aio_handle;
2515 }
2516 } else {
2517 memcpy(device->volume_id, log_lun->volume_id,
2518 sizeof(device->volume_id));
2519 }
2520
2521 device->sas_address = get_unaligned_be64(&device->wwid[0]);
2522
2523 new_device_list[num_valid_devices++] = device;
2524 }
2525
2526 pqi_update_device_list(ctrl_info, new_device_list, num_valid_devices);
2527
2528 out:
2529 list_for_each_entry_safe(device, next, &new_device_list_head,
2530 new_device_list_entry) {
2531 if (device->keep_device)
2532 continue;
2533 list_del(&device->new_device_list_entry);
2534 pqi_free_device(device);
2535 }
2536
2537 kfree(new_device_list);
2538 kfree(physdev_list);
2539 kfree(logdev_list);
2540 kfree(id_phys);
2541
2542 return rc;
2543 }
2544
pqi_scan_scsi_devices(struct pqi_ctrl_info * ctrl_info)2545 static int pqi_scan_scsi_devices(struct pqi_ctrl_info *ctrl_info)
2546 {
2547 int rc;
2548 int mutex_acquired;
2549
2550 if (pqi_ctrl_offline(ctrl_info))
2551 return -ENXIO;
2552
2553 mutex_acquired = mutex_trylock(&ctrl_info->scan_mutex);
2554
2555 if (!mutex_acquired) {
2556 if (pqi_ctrl_scan_blocked(ctrl_info))
2557 return -EBUSY;
2558 pqi_schedule_rescan_worker_delayed(ctrl_info);
2559 return -EINPROGRESS;
2560 }
2561
2562 rc = pqi_update_scsi_devices(ctrl_info);
2563 if (rc && !pqi_ctrl_scan_blocked(ctrl_info))
2564 pqi_schedule_rescan_worker_delayed(ctrl_info);
2565
2566 mutex_unlock(&ctrl_info->scan_mutex);
2567
2568 return rc;
2569 }
2570
pqi_scan_start(struct Scsi_Host * shost)2571 static void pqi_scan_start(struct Scsi_Host *shost)
2572 {
2573 struct pqi_ctrl_info *ctrl_info;
2574
2575 ctrl_info = shost_to_hba(shost);
2576
2577 pqi_scan_scsi_devices(ctrl_info);
2578 }
2579
2580 /* Returns TRUE if scan is finished. */
2581
pqi_scan_finished(struct Scsi_Host * shost,unsigned long elapsed_time)2582 static int pqi_scan_finished(struct Scsi_Host *shost,
2583 unsigned long elapsed_time)
2584 {
2585 struct pqi_ctrl_info *ctrl_info;
2586
2587 ctrl_info = shost_priv(shost);
2588
2589 return !mutex_is_locked(&ctrl_info->scan_mutex);
2590 }
2591
pqi_set_encryption_info(struct pqi_encryption_info * encryption_info,struct raid_map * raid_map,u64 first_block)2592 static inline void pqi_set_encryption_info(struct pqi_encryption_info *encryption_info,
2593 struct raid_map *raid_map, u64 first_block)
2594 {
2595 u32 volume_blk_size;
2596
2597 /*
2598 * Set the encryption tweak values based on logical block address.
2599 * If the block size is 512, the tweak value is equal to the LBA.
2600 * For other block sizes, tweak value is (LBA * block size) / 512.
2601 */
2602 volume_blk_size = get_unaligned_le32(&raid_map->volume_blk_size);
2603 if (volume_blk_size != 512)
2604 first_block = (first_block * volume_blk_size) / 512;
2605
2606 encryption_info->data_encryption_key_index =
2607 get_unaligned_le16(&raid_map->data_encryption_key_index);
2608 encryption_info->encrypt_tweak_lower = lower_32_bits(first_block);
2609 encryption_info->encrypt_tweak_upper = upper_32_bits(first_block);
2610 }
2611
2612 /*
2613 * Attempt to perform RAID bypass mapping for a logical volume I/O.
2614 */
2615
pqi_aio_raid_level_supported(struct pqi_ctrl_info * ctrl_info,struct pqi_scsi_dev_raid_map_data * rmd)2616 static bool pqi_aio_raid_level_supported(struct pqi_ctrl_info *ctrl_info,
2617 struct pqi_scsi_dev_raid_map_data *rmd)
2618 {
2619 bool is_supported = true;
2620
2621 switch (rmd->raid_level) {
2622 case SA_RAID_0:
2623 break;
2624 case SA_RAID_1:
2625 if (rmd->is_write && (!ctrl_info->enable_r1_writes ||
2626 rmd->data_length > ctrl_info->max_write_raid_1_10_2drive))
2627 is_supported = false;
2628 break;
2629 case SA_RAID_TRIPLE:
2630 if (rmd->is_write && (!ctrl_info->enable_r1_writes ||
2631 rmd->data_length > ctrl_info->max_write_raid_1_10_3drive))
2632 is_supported = false;
2633 break;
2634 case SA_RAID_5:
2635 if (rmd->is_write && (!ctrl_info->enable_r5_writes ||
2636 rmd->data_length > ctrl_info->max_write_raid_5_6))
2637 is_supported = false;
2638 break;
2639 case SA_RAID_6:
2640 if (rmd->is_write && (!ctrl_info->enable_r6_writes ||
2641 rmd->data_length > ctrl_info->max_write_raid_5_6))
2642 is_supported = false;
2643 break;
2644 default:
2645 is_supported = false;
2646 break;
2647 }
2648
2649 return is_supported;
2650 }
2651
2652 #define PQI_RAID_BYPASS_INELIGIBLE 1
2653
pqi_get_aio_lba_and_block_count(struct scsi_cmnd * scmd,struct pqi_scsi_dev_raid_map_data * rmd)2654 static int pqi_get_aio_lba_and_block_count(struct scsi_cmnd *scmd,
2655 struct pqi_scsi_dev_raid_map_data *rmd)
2656 {
2657 /* Check for valid opcode, get LBA and block count. */
2658 switch (scmd->cmnd[0]) {
2659 case WRITE_6:
2660 rmd->is_write = true;
2661 fallthrough;
2662 case READ_6:
2663 rmd->first_block = (u64)(((scmd->cmnd[1] & 0x1f) << 16) |
2664 (scmd->cmnd[2] << 8) | scmd->cmnd[3]);
2665 rmd->block_cnt = (u32)scmd->cmnd[4];
2666 if (rmd->block_cnt == 0)
2667 rmd->block_cnt = 256;
2668 break;
2669 case WRITE_10:
2670 rmd->is_write = true;
2671 fallthrough;
2672 case READ_10:
2673 rmd->first_block = (u64)get_unaligned_be32(&scmd->cmnd[2]);
2674 rmd->block_cnt = (u32)get_unaligned_be16(&scmd->cmnd[7]);
2675 break;
2676 case WRITE_12:
2677 rmd->is_write = true;
2678 fallthrough;
2679 case READ_12:
2680 rmd->first_block = (u64)get_unaligned_be32(&scmd->cmnd[2]);
2681 rmd->block_cnt = get_unaligned_be32(&scmd->cmnd[6]);
2682 break;
2683 case WRITE_16:
2684 rmd->is_write = true;
2685 fallthrough;
2686 case READ_16:
2687 rmd->first_block = get_unaligned_be64(&scmd->cmnd[2]);
2688 rmd->block_cnt = get_unaligned_be32(&scmd->cmnd[10]);
2689 break;
2690 default:
2691 /* Process via normal I/O path. */
2692 return PQI_RAID_BYPASS_INELIGIBLE;
2693 }
2694
2695 put_unaligned_le32(scsi_bufflen(scmd), &rmd->data_length);
2696
2697 return 0;
2698 }
2699
pci_get_aio_common_raid_map_values(struct pqi_ctrl_info * ctrl_info,struct pqi_scsi_dev_raid_map_data * rmd,struct raid_map * raid_map)2700 static int pci_get_aio_common_raid_map_values(struct pqi_ctrl_info *ctrl_info,
2701 struct pqi_scsi_dev_raid_map_data *rmd, struct raid_map *raid_map)
2702 {
2703 #if BITS_PER_LONG == 32
2704 u64 tmpdiv;
2705 #endif
2706
2707 rmd->last_block = rmd->first_block + rmd->block_cnt - 1;
2708
2709 /* Check for invalid block or wraparound. */
2710 if (rmd->last_block >=
2711 get_unaligned_le64(&raid_map->volume_blk_cnt) ||
2712 rmd->last_block < rmd->first_block)
2713 return PQI_RAID_BYPASS_INELIGIBLE;
2714
2715 rmd->data_disks_per_row =
2716 get_unaligned_le16(&raid_map->data_disks_per_row);
2717 rmd->strip_size = get_unaligned_le16(&raid_map->strip_size);
2718 rmd->layout_map_count = get_unaligned_le16(&raid_map->layout_map_count);
2719
2720 /* Calculate stripe information for the request. */
2721 rmd->blocks_per_row = rmd->data_disks_per_row * rmd->strip_size;
2722 if (rmd->blocks_per_row == 0) /* Used as a divisor in many calculations */
2723 return PQI_RAID_BYPASS_INELIGIBLE;
2724 #if BITS_PER_LONG == 32
2725 tmpdiv = rmd->first_block;
2726 do_div(tmpdiv, rmd->blocks_per_row);
2727 rmd->first_row = tmpdiv;
2728 tmpdiv = rmd->last_block;
2729 do_div(tmpdiv, rmd->blocks_per_row);
2730 rmd->last_row = tmpdiv;
2731 rmd->first_row_offset = (u32)(rmd->first_block - (rmd->first_row * rmd->blocks_per_row));
2732 rmd->last_row_offset = (u32)(rmd->last_block - (rmd->last_row * rmd->blocks_per_row));
2733 tmpdiv = rmd->first_row_offset;
2734 do_div(tmpdiv, rmd->strip_size);
2735 rmd->first_column = tmpdiv;
2736 tmpdiv = rmd->last_row_offset;
2737 do_div(tmpdiv, rmd->strip_size);
2738 rmd->last_column = tmpdiv;
2739 #else
2740 rmd->first_row = rmd->first_block / rmd->blocks_per_row;
2741 rmd->last_row = rmd->last_block / rmd->blocks_per_row;
2742 rmd->first_row_offset = (u32)(rmd->first_block -
2743 (rmd->first_row * rmd->blocks_per_row));
2744 rmd->last_row_offset = (u32)(rmd->last_block - (rmd->last_row *
2745 rmd->blocks_per_row));
2746 rmd->first_column = rmd->first_row_offset / rmd->strip_size;
2747 rmd->last_column = rmd->last_row_offset / rmd->strip_size;
2748 #endif
2749
2750 /* If this isn't a single row/column then give to the controller. */
2751 if (rmd->first_row != rmd->last_row ||
2752 rmd->first_column != rmd->last_column)
2753 return PQI_RAID_BYPASS_INELIGIBLE;
2754
2755 /* Proceeding with driver mapping. */
2756 rmd->total_disks_per_row = rmd->data_disks_per_row +
2757 get_unaligned_le16(&raid_map->metadata_disks_per_row);
2758 rmd->map_row = ((u32)(rmd->first_row >>
2759 raid_map->parity_rotation_shift)) %
2760 get_unaligned_le16(&raid_map->row_cnt);
2761 rmd->map_index = (rmd->map_row * rmd->total_disks_per_row) +
2762 rmd->first_column;
2763
2764 return 0;
2765 }
2766
pqi_calc_aio_r5_or_r6(struct pqi_scsi_dev_raid_map_data * rmd,struct raid_map * raid_map)2767 static int pqi_calc_aio_r5_or_r6(struct pqi_scsi_dev_raid_map_data *rmd,
2768 struct raid_map *raid_map)
2769 {
2770 #if BITS_PER_LONG == 32
2771 u64 tmpdiv;
2772 #endif
2773
2774 if (rmd->blocks_per_row == 0) /* Used as a divisor in many calculations */
2775 return PQI_RAID_BYPASS_INELIGIBLE;
2776
2777 /* RAID 50/60 */
2778 /* Verify first and last block are in same RAID group. */
2779 rmd->stripesize = rmd->blocks_per_row * rmd->layout_map_count;
2780 #if BITS_PER_LONG == 32
2781 tmpdiv = rmd->first_block;
2782 rmd->first_group = do_div(tmpdiv, rmd->stripesize);
2783 tmpdiv = rmd->first_group;
2784 do_div(tmpdiv, rmd->blocks_per_row);
2785 rmd->first_group = tmpdiv;
2786 tmpdiv = rmd->last_block;
2787 rmd->last_group = do_div(tmpdiv, rmd->stripesize);
2788 tmpdiv = rmd->last_group;
2789 do_div(tmpdiv, rmd->blocks_per_row);
2790 rmd->last_group = tmpdiv;
2791 #else
2792 rmd->first_group = (rmd->first_block % rmd->stripesize) / rmd->blocks_per_row;
2793 rmd->last_group = (rmd->last_block % rmd->stripesize) / rmd->blocks_per_row;
2794 #endif
2795 if (rmd->first_group != rmd->last_group)
2796 return PQI_RAID_BYPASS_INELIGIBLE;
2797
2798 /* Verify request is in a single row of RAID 5/6. */
2799 #if BITS_PER_LONG == 32
2800 tmpdiv = rmd->first_block;
2801 do_div(tmpdiv, rmd->stripesize);
2802 rmd->first_row = tmpdiv;
2803 rmd->r5or6_first_row = tmpdiv;
2804 tmpdiv = rmd->last_block;
2805 do_div(tmpdiv, rmd->stripesize);
2806 rmd->r5or6_last_row = tmpdiv;
2807 #else
2808 rmd->first_row = rmd->r5or6_first_row =
2809 rmd->first_block / rmd->stripesize;
2810 rmd->r5or6_last_row = rmd->last_block / rmd->stripesize;
2811 #endif
2812 if (rmd->r5or6_first_row != rmd->r5or6_last_row)
2813 return PQI_RAID_BYPASS_INELIGIBLE;
2814
2815 /* Verify request is in a single column. */
2816 #if BITS_PER_LONG == 32
2817 tmpdiv = rmd->first_block;
2818 rmd->first_row_offset = do_div(tmpdiv, rmd->stripesize);
2819 tmpdiv = rmd->first_row_offset;
2820 rmd->first_row_offset = (u32)do_div(tmpdiv, rmd->blocks_per_row);
2821 rmd->r5or6_first_row_offset = rmd->first_row_offset;
2822 tmpdiv = rmd->last_block;
2823 rmd->r5or6_last_row_offset = do_div(tmpdiv, rmd->stripesize);
2824 tmpdiv = rmd->r5or6_last_row_offset;
2825 rmd->r5or6_last_row_offset = do_div(tmpdiv, rmd->blocks_per_row);
2826 tmpdiv = rmd->r5or6_first_row_offset;
2827 do_div(tmpdiv, rmd->strip_size);
2828 rmd->first_column = rmd->r5or6_first_column = tmpdiv;
2829 tmpdiv = rmd->r5or6_last_row_offset;
2830 do_div(tmpdiv, rmd->strip_size);
2831 rmd->r5or6_last_column = tmpdiv;
2832 #else
2833 rmd->first_row_offset = rmd->r5or6_first_row_offset =
2834 (u32)((rmd->first_block % rmd->stripesize) %
2835 rmd->blocks_per_row);
2836
2837 rmd->r5or6_last_row_offset =
2838 (u32)((rmd->last_block % rmd->stripesize) %
2839 rmd->blocks_per_row);
2840
2841 rmd->first_column =
2842 rmd->r5or6_first_row_offset / rmd->strip_size;
2843 rmd->r5or6_first_column = rmd->first_column;
2844 rmd->r5or6_last_column = rmd->r5or6_last_row_offset / rmd->strip_size;
2845 #endif
2846 if (rmd->r5or6_first_column != rmd->r5or6_last_column)
2847 return PQI_RAID_BYPASS_INELIGIBLE;
2848
2849 /* Request is eligible. */
2850 rmd->map_row =
2851 ((u32)(rmd->first_row >> raid_map->parity_rotation_shift)) %
2852 get_unaligned_le16(&raid_map->row_cnt);
2853
2854 rmd->map_index = (rmd->first_group *
2855 (get_unaligned_le16(&raid_map->row_cnt) *
2856 rmd->total_disks_per_row)) +
2857 (rmd->map_row * rmd->total_disks_per_row) + rmd->first_column;
2858
2859 if (rmd->is_write) {
2860 u32 index;
2861
2862 /*
2863 * p_parity_it_nexus and q_parity_it_nexus are pointers to the
2864 * parity entries inside the device's raid_map.
2865 *
2866 * A device's RAID map is bounded by: number of RAID disks squared.
2867 *
2868 * The devices RAID map size is checked during device
2869 * initialization.
2870 */
2871 index = DIV_ROUND_UP(rmd->map_index + 1, rmd->total_disks_per_row);
2872 index *= rmd->total_disks_per_row;
2873 index -= get_unaligned_le16(&raid_map->metadata_disks_per_row);
2874
2875 rmd->p_parity_it_nexus = raid_map->disk_data[index].aio_handle;
2876 if (rmd->raid_level == SA_RAID_6) {
2877 rmd->q_parity_it_nexus = raid_map->disk_data[index + 1].aio_handle;
2878 rmd->xor_mult = raid_map->disk_data[rmd->map_index].xor_mult[1];
2879 }
2880 #if BITS_PER_LONG == 32
2881 tmpdiv = rmd->first_block;
2882 do_div(tmpdiv, rmd->blocks_per_row);
2883 rmd->row = tmpdiv;
2884 #else
2885 rmd->row = rmd->first_block / rmd->blocks_per_row;
2886 #endif
2887 }
2888
2889 return 0;
2890 }
2891
pqi_set_aio_cdb(struct pqi_scsi_dev_raid_map_data * rmd)2892 static void pqi_set_aio_cdb(struct pqi_scsi_dev_raid_map_data *rmd)
2893 {
2894 /* Build the new CDB for the physical disk I/O. */
2895 if (rmd->disk_block > 0xffffffff) {
2896 rmd->cdb[0] = rmd->is_write ? WRITE_16 : READ_16;
2897 rmd->cdb[1] = 0;
2898 put_unaligned_be64(rmd->disk_block, &rmd->cdb[2]);
2899 put_unaligned_be32(rmd->disk_block_cnt, &rmd->cdb[10]);
2900 rmd->cdb[14] = 0;
2901 rmd->cdb[15] = 0;
2902 rmd->cdb_length = 16;
2903 } else {
2904 rmd->cdb[0] = rmd->is_write ? WRITE_10 : READ_10;
2905 rmd->cdb[1] = 0;
2906 put_unaligned_be32((u32)rmd->disk_block, &rmd->cdb[2]);
2907 rmd->cdb[6] = 0;
2908 put_unaligned_be16((u16)rmd->disk_block_cnt, &rmd->cdb[7]);
2909 rmd->cdb[9] = 0;
2910 rmd->cdb_length = 10;
2911 }
2912 }
2913
pqi_calc_aio_r1_nexus(struct raid_map * raid_map,struct pqi_scsi_dev_raid_map_data * rmd)2914 static void pqi_calc_aio_r1_nexus(struct raid_map *raid_map,
2915 struct pqi_scsi_dev_raid_map_data *rmd)
2916 {
2917 u32 index;
2918 u32 group;
2919
2920 group = rmd->map_index / rmd->data_disks_per_row;
2921
2922 index = rmd->map_index - (group * rmd->data_disks_per_row);
2923 rmd->it_nexus[0] = raid_map->disk_data[index].aio_handle;
2924 index += rmd->data_disks_per_row;
2925 rmd->it_nexus[1] = raid_map->disk_data[index].aio_handle;
2926 if (rmd->layout_map_count > 2) {
2927 index += rmd->data_disks_per_row;
2928 rmd->it_nexus[2] = raid_map->disk_data[index].aio_handle;
2929 }
2930
2931 rmd->num_it_nexus_entries = rmd->layout_map_count;
2932 }
2933
pqi_raid_bypass_submit_scsi_cmd(struct pqi_ctrl_info * ctrl_info,struct pqi_scsi_dev * device,struct scsi_cmnd * scmd,struct pqi_queue_group * queue_group)2934 static int pqi_raid_bypass_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info,
2935 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
2936 struct pqi_queue_group *queue_group)
2937 {
2938 int rc;
2939 struct raid_map *raid_map;
2940 u32 group;
2941 u32 next_bypass_group;
2942 struct pqi_encryption_info *encryption_info_ptr;
2943 struct pqi_encryption_info encryption_info;
2944 struct pqi_scsi_dev_raid_map_data rmd = { 0 };
2945
2946 rc = pqi_get_aio_lba_and_block_count(scmd, &rmd);
2947 if (rc)
2948 return PQI_RAID_BYPASS_INELIGIBLE;
2949
2950 rmd.raid_level = device->raid_level;
2951
2952 if (!pqi_aio_raid_level_supported(ctrl_info, &rmd))
2953 return PQI_RAID_BYPASS_INELIGIBLE;
2954
2955 if (unlikely(rmd.block_cnt == 0))
2956 return PQI_RAID_BYPASS_INELIGIBLE;
2957
2958 raid_map = device->raid_map;
2959
2960 rc = pci_get_aio_common_raid_map_values(ctrl_info, &rmd, raid_map);
2961 if (rc)
2962 return PQI_RAID_BYPASS_INELIGIBLE;
2963
2964 if (device->raid_level == SA_RAID_1 ||
2965 device->raid_level == SA_RAID_TRIPLE) {
2966 if (rmd.is_write) {
2967 pqi_calc_aio_r1_nexus(raid_map, &rmd);
2968 } else {
2969 group = device->next_bypass_group[rmd.map_index];
2970 next_bypass_group = group + 1;
2971 if (next_bypass_group >= rmd.layout_map_count)
2972 next_bypass_group = 0;
2973 device->next_bypass_group[rmd.map_index] = next_bypass_group;
2974 rmd.map_index += group * rmd.data_disks_per_row;
2975 }
2976 } else if ((device->raid_level == SA_RAID_5 ||
2977 device->raid_level == SA_RAID_6) &&
2978 (rmd.layout_map_count > 1 || rmd.is_write)) {
2979 rc = pqi_calc_aio_r5_or_r6(&rmd, raid_map);
2980 if (rc)
2981 return PQI_RAID_BYPASS_INELIGIBLE;
2982 }
2983
2984 if (unlikely(rmd.map_index >= RAID_MAP_MAX_ENTRIES))
2985 return PQI_RAID_BYPASS_INELIGIBLE;
2986
2987 rmd.aio_handle = raid_map->disk_data[rmd.map_index].aio_handle;
2988 rmd.disk_block = get_unaligned_le64(&raid_map->disk_starting_blk) +
2989 rmd.first_row * rmd.strip_size +
2990 (rmd.first_row_offset - rmd.first_column * rmd.strip_size);
2991 rmd.disk_block_cnt = rmd.block_cnt;
2992
2993 /* Handle differing logical/physical block sizes. */
2994 if (raid_map->phys_blk_shift) {
2995 rmd.disk_block <<= raid_map->phys_blk_shift;
2996 rmd.disk_block_cnt <<= raid_map->phys_blk_shift;
2997 }
2998
2999 if (unlikely(rmd.disk_block_cnt > 0xffff))
3000 return PQI_RAID_BYPASS_INELIGIBLE;
3001
3002 pqi_set_aio_cdb(&rmd);
3003
3004 if (get_unaligned_le16(&raid_map->flags) & RAID_MAP_ENCRYPTION_ENABLED) {
3005 if (rmd.data_length > device->max_transfer_encrypted)
3006 return PQI_RAID_BYPASS_INELIGIBLE;
3007 pqi_set_encryption_info(&encryption_info, raid_map, rmd.first_block);
3008 encryption_info_ptr = &encryption_info;
3009 } else {
3010 encryption_info_ptr = NULL;
3011 }
3012
3013 if (rmd.is_write) {
3014 switch (device->raid_level) {
3015 case SA_RAID_1:
3016 case SA_RAID_TRIPLE:
3017 return pqi_aio_submit_r1_write_io(ctrl_info, scmd, queue_group,
3018 encryption_info_ptr, device, &rmd);
3019 case SA_RAID_5:
3020 case SA_RAID_6:
3021 return pqi_aio_submit_r56_write_io(ctrl_info, scmd, queue_group,
3022 encryption_info_ptr, device, &rmd);
3023 }
3024 }
3025
3026 return pqi_aio_submit_io(ctrl_info, scmd, rmd.aio_handle,
3027 rmd.cdb, rmd.cdb_length, queue_group,
3028 encryption_info_ptr, true, false);
3029 }
3030
3031 #define PQI_STATUS_IDLE 0x0
3032
3033 #define PQI_CREATE_ADMIN_QUEUE_PAIR 1
3034 #define PQI_DELETE_ADMIN_QUEUE_PAIR 2
3035
3036 #define PQI_DEVICE_STATE_POWER_ON_AND_RESET 0x0
3037 #define PQI_DEVICE_STATE_STATUS_AVAILABLE 0x1
3038 #define PQI_DEVICE_STATE_ALL_REGISTERS_READY 0x2
3039 #define PQI_DEVICE_STATE_ADMIN_QUEUE_PAIR_READY 0x3
3040 #define PQI_DEVICE_STATE_ERROR 0x4
3041
3042 #define PQI_MODE_READY_TIMEOUT_SECS 30
3043 #define PQI_MODE_READY_POLL_INTERVAL_MSECS 1
3044
pqi_wait_for_pqi_mode_ready(struct pqi_ctrl_info * ctrl_info)3045 static int pqi_wait_for_pqi_mode_ready(struct pqi_ctrl_info *ctrl_info)
3046 {
3047 struct pqi_device_registers __iomem *pqi_registers;
3048 unsigned long timeout;
3049 u64 signature;
3050 u8 status;
3051
3052 pqi_registers = ctrl_info->pqi_registers;
3053 timeout = (PQI_MODE_READY_TIMEOUT_SECS * HZ) + jiffies;
3054
3055 while (1) {
3056 signature = readq(&pqi_registers->signature);
3057 if (memcmp(&signature, PQI_DEVICE_SIGNATURE,
3058 sizeof(signature)) == 0)
3059 break;
3060 if (time_after(jiffies, timeout)) {
3061 dev_err(&ctrl_info->pci_dev->dev,
3062 "timed out waiting for PQI signature\n");
3063 return -ETIMEDOUT;
3064 }
3065 msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS);
3066 }
3067
3068 while (1) {
3069 status = readb(&pqi_registers->function_and_status_code);
3070 if (status == PQI_STATUS_IDLE)
3071 break;
3072 if (time_after(jiffies, timeout)) {
3073 dev_err(&ctrl_info->pci_dev->dev,
3074 "timed out waiting for PQI IDLE\n");
3075 return -ETIMEDOUT;
3076 }
3077 msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS);
3078 }
3079
3080 while (1) {
3081 if (readl(&pqi_registers->device_status) ==
3082 PQI_DEVICE_STATE_ALL_REGISTERS_READY)
3083 break;
3084 if (time_after(jiffies, timeout)) {
3085 dev_err(&ctrl_info->pci_dev->dev,
3086 "timed out waiting for PQI all registers ready\n");
3087 return -ETIMEDOUT;
3088 }
3089 msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS);
3090 }
3091
3092 return 0;
3093 }
3094
pqi_aio_path_disabled(struct pqi_io_request * io_request)3095 static inline void pqi_aio_path_disabled(struct pqi_io_request *io_request)
3096 {
3097 struct pqi_scsi_dev *device;
3098
3099 device = io_request->scmd->device->hostdata;
3100 device->raid_bypass_enabled = false;
3101 device->aio_enabled = false;
3102 }
3103
pqi_take_device_offline(struct scsi_device * sdev,char * path)3104 static inline void pqi_take_device_offline(struct scsi_device *sdev, char *path)
3105 {
3106 struct pqi_ctrl_info *ctrl_info;
3107 struct pqi_scsi_dev *device;
3108
3109 device = sdev->hostdata;
3110 if (device->device_offline)
3111 return;
3112
3113 device->device_offline = true;
3114 ctrl_info = shost_to_hba(sdev->host);
3115 pqi_schedule_rescan_worker(ctrl_info);
3116 dev_err(&ctrl_info->pci_dev->dev, "re-scanning %s scsi %d:%d:%d:%d\n",
3117 path, ctrl_info->scsi_host->host_no, device->bus,
3118 device->target, device->lun);
3119 }
3120
pqi_process_raid_io_error(struct pqi_io_request * io_request)3121 static void pqi_process_raid_io_error(struct pqi_io_request *io_request)
3122 {
3123 u8 scsi_status;
3124 u8 host_byte;
3125 struct scsi_cmnd *scmd;
3126 struct pqi_raid_error_info *error_info;
3127 size_t sense_data_length;
3128 int residual_count;
3129 int xfer_count;
3130 struct scsi_sense_hdr sshdr;
3131
3132 scmd = io_request->scmd;
3133 if (!scmd)
3134 return;
3135
3136 error_info = io_request->error_info;
3137 scsi_status = error_info->status;
3138 host_byte = DID_OK;
3139
3140 switch (error_info->data_out_result) {
3141 case PQI_DATA_IN_OUT_GOOD:
3142 break;
3143 case PQI_DATA_IN_OUT_UNDERFLOW:
3144 xfer_count =
3145 get_unaligned_le32(&error_info->data_out_transferred);
3146 residual_count = scsi_bufflen(scmd) - xfer_count;
3147 scsi_set_resid(scmd, residual_count);
3148 if (xfer_count < scmd->underflow)
3149 host_byte = DID_SOFT_ERROR;
3150 break;
3151 case PQI_DATA_IN_OUT_UNSOLICITED_ABORT:
3152 case PQI_DATA_IN_OUT_ABORTED:
3153 host_byte = DID_ABORT;
3154 break;
3155 case PQI_DATA_IN_OUT_TIMEOUT:
3156 host_byte = DID_TIME_OUT;
3157 break;
3158 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW:
3159 case PQI_DATA_IN_OUT_PROTOCOL_ERROR:
3160 case PQI_DATA_IN_OUT_BUFFER_ERROR:
3161 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_DESCRIPTOR_AREA:
3162 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_BRIDGE:
3163 case PQI_DATA_IN_OUT_ERROR:
3164 case PQI_DATA_IN_OUT_HARDWARE_ERROR:
3165 case PQI_DATA_IN_OUT_PCIE_FABRIC_ERROR:
3166 case PQI_DATA_IN_OUT_PCIE_COMPLETION_TIMEOUT:
3167 case PQI_DATA_IN_OUT_PCIE_COMPLETER_ABORT_RECEIVED:
3168 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST_RECEIVED:
3169 case PQI_DATA_IN_OUT_PCIE_ECRC_CHECK_FAILED:
3170 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST:
3171 case PQI_DATA_IN_OUT_PCIE_ACS_VIOLATION:
3172 case PQI_DATA_IN_OUT_PCIE_TLP_PREFIX_BLOCKED:
3173 case PQI_DATA_IN_OUT_PCIE_POISONED_MEMORY_READ:
3174 default:
3175 host_byte = DID_ERROR;
3176 break;
3177 }
3178
3179 sense_data_length = get_unaligned_le16(&error_info->sense_data_length);
3180 if (sense_data_length == 0)
3181 sense_data_length =
3182 get_unaligned_le16(&error_info->response_data_length);
3183 if (sense_data_length) {
3184 if (sense_data_length > sizeof(error_info->data))
3185 sense_data_length = sizeof(error_info->data);
3186
3187 if (scsi_status == SAM_STAT_CHECK_CONDITION &&
3188 scsi_normalize_sense(error_info->data,
3189 sense_data_length, &sshdr) &&
3190 sshdr.sense_key == HARDWARE_ERROR &&
3191 sshdr.asc == 0x3e) {
3192 struct pqi_ctrl_info *ctrl_info = shost_to_hba(scmd->device->host);
3193 struct pqi_scsi_dev *device = scmd->device->hostdata;
3194
3195 switch (sshdr.ascq) {
3196 case 0x1: /* LOGICAL UNIT FAILURE */
3197 if (printk_ratelimit())
3198 scmd_printk(KERN_ERR, scmd, "received 'logical unit failure' from controller for scsi %d:%d:%d:%d\n",
3199 ctrl_info->scsi_host->host_no, device->bus, device->target, device->lun);
3200 pqi_take_device_offline(scmd->device, "RAID");
3201 host_byte = DID_NO_CONNECT;
3202 break;
3203
3204 default: /* See http://www.t10.org/lists/asc-num.htm#ASC_3E */
3205 if (printk_ratelimit())
3206 scmd_printk(KERN_ERR, scmd, "received unhandled error %d from controller for scsi %d:%d:%d:%d\n",
3207 sshdr.ascq, ctrl_info->scsi_host->host_no, device->bus, device->target, device->lun);
3208 break;
3209 }
3210 }
3211
3212 if (sense_data_length > SCSI_SENSE_BUFFERSIZE)
3213 sense_data_length = SCSI_SENSE_BUFFERSIZE;
3214 memcpy(scmd->sense_buffer, error_info->data,
3215 sense_data_length);
3216 }
3217
3218 scmd->result = scsi_status;
3219 set_host_byte(scmd, host_byte);
3220 }
3221
pqi_process_aio_io_error(struct pqi_io_request * io_request)3222 static void pqi_process_aio_io_error(struct pqi_io_request *io_request)
3223 {
3224 u8 scsi_status;
3225 u8 host_byte;
3226 struct scsi_cmnd *scmd;
3227 struct pqi_aio_error_info *error_info;
3228 size_t sense_data_length;
3229 int residual_count;
3230 int xfer_count;
3231 bool device_offline;
3232 struct pqi_scsi_dev *device;
3233
3234 scmd = io_request->scmd;
3235 error_info = io_request->error_info;
3236 host_byte = DID_OK;
3237 sense_data_length = 0;
3238 device_offline = false;
3239 device = scmd->device->hostdata;
3240
3241 switch (error_info->service_response) {
3242 case PQI_AIO_SERV_RESPONSE_COMPLETE:
3243 scsi_status = error_info->status;
3244 break;
3245 case PQI_AIO_SERV_RESPONSE_FAILURE:
3246 switch (error_info->status) {
3247 case PQI_AIO_STATUS_IO_ABORTED:
3248 scsi_status = SAM_STAT_TASK_ABORTED;
3249 break;
3250 case PQI_AIO_STATUS_UNDERRUN:
3251 scsi_status = SAM_STAT_GOOD;
3252 residual_count = get_unaligned_le32(
3253 &error_info->residual_count);
3254 scsi_set_resid(scmd, residual_count);
3255 xfer_count = scsi_bufflen(scmd) - residual_count;
3256 if (xfer_count < scmd->underflow)
3257 host_byte = DID_SOFT_ERROR;
3258 break;
3259 case PQI_AIO_STATUS_OVERRUN:
3260 scsi_status = SAM_STAT_GOOD;
3261 break;
3262 case PQI_AIO_STATUS_AIO_PATH_DISABLED:
3263 pqi_aio_path_disabled(io_request);
3264 if (pqi_is_multipath_device(device)) {
3265 pqi_device_remove_start(device);
3266 host_byte = DID_NO_CONNECT;
3267 scsi_status = SAM_STAT_CHECK_CONDITION;
3268 } else {
3269 scsi_status = SAM_STAT_GOOD;
3270 io_request->status = -EAGAIN;
3271 }
3272 break;
3273 case PQI_AIO_STATUS_NO_PATH_TO_DEVICE:
3274 case PQI_AIO_STATUS_INVALID_DEVICE:
3275 if (!io_request->raid_bypass) {
3276 device_offline = true;
3277 pqi_take_device_offline(scmd->device, "AIO");
3278 host_byte = DID_NO_CONNECT;
3279 }
3280 scsi_status = SAM_STAT_CHECK_CONDITION;
3281 break;
3282 case PQI_AIO_STATUS_IO_ERROR:
3283 default:
3284 scsi_status = SAM_STAT_CHECK_CONDITION;
3285 break;
3286 }
3287 break;
3288 case PQI_AIO_SERV_RESPONSE_TMF_COMPLETE:
3289 case PQI_AIO_SERV_RESPONSE_TMF_SUCCEEDED:
3290 scsi_status = SAM_STAT_GOOD;
3291 break;
3292 case PQI_AIO_SERV_RESPONSE_TMF_REJECTED:
3293 case PQI_AIO_SERV_RESPONSE_TMF_INCORRECT_LUN:
3294 default:
3295 scsi_status = SAM_STAT_CHECK_CONDITION;
3296 break;
3297 }
3298
3299 if (error_info->data_present) {
3300 sense_data_length =
3301 get_unaligned_le16(&error_info->data_length);
3302 if (sense_data_length) {
3303 if (sense_data_length > sizeof(error_info->data))
3304 sense_data_length = sizeof(error_info->data);
3305 if (sense_data_length > SCSI_SENSE_BUFFERSIZE)
3306 sense_data_length = SCSI_SENSE_BUFFERSIZE;
3307 memcpy(scmd->sense_buffer, error_info->data,
3308 sense_data_length);
3309 }
3310 }
3311
3312 if (device_offline && sense_data_length == 0)
3313 scsi_build_sense(scmd, 0, HARDWARE_ERROR, 0x3e, 0x1);
3314
3315 scmd->result = scsi_status;
3316 set_host_byte(scmd, host_byte);
3317 }
3318
pqi_process_io_error(unsigned int iu_type,struct pqi_io_request * io_request)3319 static void pqi_process_io_error(unsigned int iu_type,
3320 struct pqi_io_request *io_request)
3321 {
3322 switch (iu_type) {
3323 case PQI_RESPONSE_IU_RAID_PATH_IO_ERROR:
3324 pqi_process_raid_io_error(io_request);
3325 break;
3326 case PQI_RESPONSE_IU_AIO_PATH_IO_ERROR:
3327 pqi_process_aio_io_error(io_request);
3328 break;
3329 }
3330 }
3331
pqi_interpret_task_management_response(struct pqi_ctrl_info * ctrl_info,struct pqi_task_management_response * response)3332 static int pqi_interpret_task_management_response(struct pqi_ctrl_info *ctrl_info,
3333 struct pqi_task_management_response *response)
3334 {
3335 int rc;
3336
3337 switch (response->response_code) {
3338 case SOP_TMF_COMPLETE:
3339 case SOP_TMF_FUNCTION_SUCCEEDED:
3340 rc = 0;
3341 break;
3342 case SOP_TMF_REJECTED:
3343 rc = -EAGAIN;
3344 break;
3345 case SOP_RC_INCORRECT_LOGICAL_UNIT:
3346 rc = -ENODEV;
3347 break;
3348 default:
3349 rc = -EIO;
3350 break;
3351 }
3352
3353 if (rc)
3354 dev_err(&ctrl_info->pci_dev->dev,
3355 "Task Management Function error: %d (response code: %u)\n", rc, response->response_code);
3356
3357 return rc;
3358 }
3359
pqi_invalid_response(struct pqi_ctrl_info * ctrl_info,enum pqi_ctrl_shutdown_reason ctrl_shutdown_reason)3360 static inline void pqi_invalid_response(struct pqi_ctrl_info *ctrl_info,
3361 enum pqi_ctrl_shutdown_reason ctrl_shutdown_reason)
3362 {
3363 pqi_take_ctrl_offline(ctrl_info, ctrl_shutdown_reason);
3364 }
3365
pqi_process_io_intr(struct pqi_ctrl_info * ctrl_info,struct pqi_queue_group * queue_group)3366 static int pqi_process_io_intr(struct pqi_ctrl_info *ctrl_info, struct pqi_queue_group *queue_group)
3367 {
3368 int num_responses;
3369 pqi_index_t oq_pi;
3370 pqi_index_t oq_ci;
3371 struct pqi_io_request *io_request;
3372 struct pqi_io_response *response;
3373 u16 request_id;
3374
3375 num_responses = 0;
3376 oq_ci = queue_group->oq_ci_copy;
3377
3378 while (1) {
3379 oq_pi = readl(queue_group->oq_pi);
3380 if (oq_pi >= ctrl_info->num_elements_per_oq) {
3381 pqi_invalid_response(ctrl_info, PQI_IO_PI_OUT_OF_RANGE);
3382 dev_err(&ctrl_info->pci_dev->dev,
3383 "I/O interrupt: producer index (%u) out of range (0-%u): consumer index: %u\n",
3384 oq_pi, ctrl_info->num_elements_per_oq - 1, oq_ci);
3385 return -1;
3386 }
3387 if (oq_pi == oq_ci)
3388 break;
3389
3390 num_responses++;
3391 response = queue_group->oq_element_array +
3392 (oq_ci * PQI_OPERATIONAL_OQ_ELEMENT_LENGTH);
3393
3394 request_id = get_unaligned_le16(&response->request_id);
3395 if (request_id >= ctrl_info->max_io_slots) {
3396 pqi_invalid_response(ctrl_info, PQI_INVALID_REQ_ID);
3397 dev_err(&ctrl_info->pci_dev->dev,
3398 "request ID in response (%u) out of range (0-%u): producer index: %u consumer index: %u\n",
3399 request_id, ctrl_info->max_io_slots - 1, oq_pi, oq_ci);
3400 return -1;
3401 }
3402
3403 io_request = &ctrl_info->io_request_pool[request_id];
3404 if (atomic_read(&io_request->refcount) == 0) {
3405 pqi_invalid_response(ctrl_info, PQI_UNMATCHED_REQ_ID);
3406 dev_err(&ctrl_info->pci_dev->dev,
3407 "request ID in response (%u) does not match an outstanding I/O request: producer index: %u consumer index: %u\n",
3408 request_id, oq_pi, oq_ci);
3409 return -1;
3410 }
3411
3412 switch (response->header.iu_type) {
3413 case PQI_RESPONSE_IU_RAID_PATH_IO_SUCCESS:
3414 case PQI_RESPONSE_IU_AIO_PATH_IO_SUCCESS:
3415 if (io_request->scmd)
3416 io_request->scmd->result = 0;
3417 fallthrough;
3418 case PQI_RESPONSE_IU_GENERAL_MANAGEMENT:
3419 break;
3420 case PQI_RESPONSE_IU_VENDOR_GENERAL:
3421 io_request->status =
3422 get_unaligned_le16(
3423 &((struct pqi_vendor_general_response *)response)->status);
3424 break;
3425 case PQI_RESPONSE_IU_TASK_MANAGEMENT:
3426 io_request->status = pqi_interpret_task_management_response(ctrl_info,
3427 (void *)response);
3428 break;
3429 case PQI_RESPONSE_IU_AIO_PATH_DISABLED:
3430 pqi_aio_path_disabled(io_request);
3431 io_request->status = -EAGAIN;
3432 break;
3433 case PQI_RESPONSE_IU_RAID_PATH_IO_ERROR:
3434 case PQI_RESPONSE_IU_AIO_PATH_IO_ERROR:
3435 io_request->error_info = ctrl_info->error_buffer +
3436 (get_unaligned_le16(&response->error_index) *
3437 PQI_ERROR_BUFFER_ELEMENT_LENGTH);
3438 pqi_process_io_error(response->header.iu_type, io_request);
3439 break;
3440 default:
3441 pqi_invalid_response(ctrl_info, PQI_UNEXPECTED_IU_TYPE);
3442 dev_err(&ctrl_info->pci_dev->dev,
3443 "unexpected IU type: 0x%x: producer index: %u consumer index: %u\n",
3444 response->header.iu_type, oq_pi, oq_ci);
3445 return -1;
3446 }
3447
3448 io_request->io_complete_callback(io_request, io_request->context);
3449
3450 /*
3451 * Note that the I/O request structure CANNOT BE TOUCHED after
3452 * returning from the I/O completion callback!
3453 */
3454 oq_ci = (oq_ci + 1) % ctrl_info->num_elements_per_oq;
3455 }
3456
3457 if (num_responses) {
3458 queue_group->oq_ci_copy = oq_ci;
3459 writel(oq_ci, queue_group->oq_ci);
3460 }
3461
3462 return num_responses;
3463 }
3464
pqi_num_elements_free(unsigned int pi,unsigned int ci,unsigned int elements_in_queue)3465 static inline unsigned int pqi_num_elements_free(unsigned int pi,
3466 unsigned int ci, unsigned int elements_in_queue)
3467 {
3468 unsigned int num_elements_used;
3469
3470 if (pi >= ci)
3471 num_elements_used = pi - ci;
3472 else
3473 num_elements_used = elements_in_queue - ci + pi;
3474
3475 return elements_in_queue - num_elements_used - 1;
3476 }
3477
pqi_send_event_ack(struct pqi_ctrl_info * ctrl_info,struct pqi_event_acknowledge_request * iu,size_t iu_length)3478 static void pqi_send_event_ack(struct pqi_ctrl_info *ctrl_info,
3479 struct pqi_event_acknowledge_request *iu, size_t iu_length)
3480 {
3481 pqi_index_t iq_pi;
3482 pqi_index_t iq_ci;
3483 unsigned long flags;
3484 void *next_element;
3485 struct pqi_queue_group *queue_group;
3486
3487 queue_group = &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP];
3488 put_unaligned_le16(queue_group->oq_id, &iu->header.response_queue_id);
3489
3490 while (1) {
3491 spin_lock_irqsave(&queue_group->submit_lock[RAID_PATH], flags);
3492
3493 iq_pi = queue_group->iq_pi_copy[RAID_PATH];
3494 iq_ci = readl(queue_group->iq_ci[RAID_PATH]);
3495
3496 if (pqi_num_elements_free(iq_pi, iq_ci,
3497 ctrl_info->num_elements_per_iq))
3498 break;
3499
3500 spin_unlock_irqrestore(
3501 &queue_group->submit_lock[RAID_PATH], flags);
3502
3503 if (pqi_ctrl_offline(ctrl_info))
3504 return;
3505 }
3506
3507 next_element = queue_group->iq_element_array[RAID_PATH] +
3508 (iq_pi * PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
3509
3510 memcpy(next_element, iu, iu_length);
3511
3512 iq_pi = (iq_pi + 1) % ctrl_info->num_elements_per_iq;
3513 queue_group->iq_pi_copy[RAID_PATH] = iq_pi;
3514
3515 /*
3516 * This write notifies the controller that an IU is available to be
3517 * processed.
3518 */
3519 writel(iq_pi, queue_group->iq_pi[RAID_PATH]);
3520
3521 spin_unlock_irqrestore(&queue_group->submit_lock[RAID_PATH], flags);
3522 }
3523
pqi_acknowledge_event(struct pqi_ctrl_info * ctrl_info,struct pqi_event * event)3524 static void pqi_acknowledge_event(struct pqi_ctrl_info *ctrl_info,
3525 struct pqi_event *event)
3526 {
3527 struct pqi_event_acknowledge_request request;
3528
3529 memset(&request, 0, sizeof(request));
3530
3531 request.header.iu_type = PQI_REQUEST_IU_ACKNOWLEDGE_VENDOR_EVENT;
3532 put_unaligned_le16(sizeof(request) - PQI_REQUEST_HEADER_LENGTH,
3533 &request.header.iu_length);
3534 request.event_type = event->event_type;
3535 put_unaligned_le16(event->event_id, &request.event_id);
3536 put_unaligned_le32(event->additional_event_id, &request.additional_event_id);
3537
3538 pqi_send_event_ack(ctrl_info, &request, sizeof(request));
3539 }
3540
3541 #define PQI_SOFT_RESET_STATUS_TIMEOUT_SECS 30
3542 #define PQI_SOFT_RESET_STATUS_POLL_INTERVAL_SECS 1
3543
pqi_poll_for_soft_reset_status(struct pqi_ctrl_info * ctrl_info)3544 static enum pqi_soft_reset_status pqi_poll_for_soft_reset_status(
3545 struct pqi_ctrl_info *ctrl_info)
3546 {
3547 u8 status;
3548 unsigned long timeout;
3549
3550 timeout = (PQI_SOFT_RESET_STATUS_TIMEOUT_SECS * HZ) + jiffies;
3551
3552 while (1) {
3553 status = pqi_read_soft_reset_status(ctrl_info);
3554 if (status & PQI_SOFT_RESET_INITIATE)
3555 return RESET_INITIATE_DRIVER;
3556
3557 if (status & PQI_SOFT_RESET_ABORT)
3558 return RESET_ABORT;
3559
3560 if (!sis_is_firmware_running(ctrl_info))
3561 return RESET_NORESPONSE;
3562
3563 if (time_after(jiffies, timeout)) {
3564 dev_warn(&ctrl_info->pci_dev->dev,
3565 "timed out waiting for soft reset status\n");
3566 return RESET_TIMEDOUT;
3567 }
3568
3569 ssleep(PQI_SOFT_RESET_STATUS_POLL_INTERVAL_SECS);
3570 }
3571 }
3572
pqi_process_soft_reset(struct pqi_ctrl_info * ctrl_info)3573 static void pqi_process_soft_reset(struct pqi_ctrl_info *ctrl_info)
3574 {
3575 int rc;
3576 unsigned int delay_secs;
3577 enum pqi_soft_reset_status reset_status;
3578
3579 if (ctrl_info->soft_reset_handshake_supported)
3580 reset_status = pqi_poll_for_soft_reset_status(ctrl_info);
3581 else
3582 reset_status = RESET_INITIATE_FIRMWARE;
3583
3584 delay_secs = PQI_POST_RESET_DELAY_SECS;
3585
3586 switch (reset_status) {
3587 case RESET_TIMEDOUT:
3588 delay_secs = PQI_POST_OFA_RESET_DELAY_UPON_TIMEOUT_SECS;
3589 fallthrough;
3590 case RESET_INITIATE_DRIVER:
3591 dev_info(&ctrl_info->pci_dev->dev,
3592 "Online Firmware Activation: resetting controller\n");
3593 sis_soft_reset(ctrl_info);
3594 fallthrough;
3595 case RESET_INITIATE_FIRMWARE:
3596 ctrl_info->pqi_mode_enabled = false;
3597 pqi_save_ctrl_mode(ctrl_info, SIS_MODE);
3598 rc = pqi_ofa_ctrl_restart(ctrl_info, delay_secs);
3599 pqi_ofa_free_host_buffer(ctrl_info);
3600 pqi_ctrl_ofa_done(ctrl_info);
3601 dev_info(&ctrl_info->pci_dev->dev,
3602 "Online Firmware Activation: %s\n",
3603 rc == 0 ? "SUCCESS" : "FAILED");
3604 break;
3605 case RESET_ABORT:
3606 dev_info(&ctrl_info->pci_dev->dev,
3607 "Online Firmware Activation ABORTED\n");
3608 if (ctrl_info->soft_reset_handshake_supported)
3609 pqi_clear_soft_reset_status(ctrl_info);
3610 pqi_ofa_free_host_buffer(ctrl_info);
3611 pqi_ctrl_ofa_done(ctrl_info);
3612 pqi_ofa_ctrl_unquiesce(ctrl_info);
3613 break;
3614 case RESET_NORESPONSE:
3615 fallthrough;
3616 default:
3617 dev_err(&ctrl_info->pci_dev->dev,
3618 "unexpected Online Firmware Activation reset status: 0x%x\n",
3619 reset_status);
3620 pqi_ofa_free_host_buffer(ctrl_info);
3621 pqi_ctrl_ofa_done(ctrl_info);
3622 pqi_ofa_ctrl_unquiesce(ctrl_info);
3623 pqi_take_ctrl_offline(ctrl_info, PQI_OFA_RESPONSE_TIMEOUT);
3624 break;
3625 }
3626 }
3627
pqi_ofa_memory_alloc_worker(struct work_struct * work)3628 static void pqi_ofa_memory_alloc_worker(struct work_struct *work)
3629 {
3630 struct pqi_ctrl_info *ctrl_info;
3631
3632 ctrl_info = container_of(work, struct pqi_ctrl_info, ofa_memory_alloc_work);
3633
3634 pqi_ctrl_ofa_start(ctrl_info);
3635 pqi_ofa_setup_host_buffer(ctrl_info);
3636 pqi_ofa_host_memory_update(ctrl_info);
3637 }
3638
pqi_ofa_quiesce_worker(struct work_struct * work)3639 static void pqi_ofa_quiesce_worker(struct work_struct *work)
3640 {
3641 struct pqi_ctrl_info *ctrl_info;
3642 struct pqi_event *event;
3643
3644 ctrl_info = container_of(work, struct pqi_ctrl_info, ofa_quiesce_work);
3645
3646 event = &ctrl_info->events[pqi_event_type_to_event_index(PQI_EVENT_TYPE_OFA)];
3647
3648 pqi_ofa_ctrl_quiesce(ctrl_info);
3649 pqi_acknowledge_event(ctrl_info, event);
3650 pqi_process_soft_reset(ctrl_info);
3651 }
3652
pqi_ofa_process_event(struct pqi_ctrl_info * ctrl_info,struct pqi_event * event)3653 static bool pqi_ofa_process_event(struct pqi_ctrl_info *ctrl_info,
3654 struct pqi_event *event)
3655 {
3656 bool ack_event;
3657
3658 ack_event = true;
3659
3660 switch (event->event_id) {
3661 case PQI_EVENT_OFA_MEMORY_ALLOCATION:
3662 dev_info(&ctrl_info->pci_dev->dev,
3663 "received Online Firmware Activation memory allocation request\n");
3664 schedule_work(&ctrl_info->ofa_memory_alloc_work);
3665 break;
3666 case PQI_EVENT_OFA_QUIESCE:
3667 dev_info(&ctrl_info->pci_dev->dev,
3668 "received Online Firmware Activation quiesce request\n");
3669 schedule_work(&ctrl_info->ofa_quiesce_work);
3670 ack_event = false;
3671 break;
3672 case PQI_EVENT_OFA_CANCELED:
3673 dev_info(&ctrl_info->pci_dev->dev,
3674 "received Online Firmware Activation cancel request: reason: %u\n",
3675 ctrl_info->ofa_cancel_reason);
3676 pqi_ofa_free_host_buffer(ctrl_info);
3677 pqi_ctrl_ofa_done(ctrl_info);
3678 break;
3679 default:
3680 dev_err(&ctrl_info->pci_dev->dev,
3681 "received unknown Online Firmware Activation request: event ID: %u\n",
3682 event->event_id);
3683 break;
3684 }
3685
3686 return ack_event;
3687 }
3688
pqi_disable_raid_bypass(struct pqi_ctrl_info * ctrl_info)3689 static void pqi_disable_raid_bypass(struct pqi_ctrl_info *ctrl_info)
3690 {
3691 unsigned long flags;
3692 struct pqi_scsi_dev *device;
3693
3694 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
3695
3696 list_for_each_entry(device, &ctrl_info->scsi_device_list, scsi_device_list_entry)
3697 if (device->raid_bypass_enabled)
3698 device->raid_bypass_enabled = false;
3699
3700 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
3701 }
3702
pqi_event_worker(struct work_struct * work)3703 static void pqi_event_worker(struct work_struct *work)
3704 {
3705 unsigned int i;
3706 bool rescan_needed;
3707 struct pqi_ctrl_info *ctrl_info;
3708 struct pqi_event *event;
3709 bool ack_event;
3710
3711 ctrl_info = container_of(work, struct pqi_ctrl_info, event_work);
3712
3713 pqi_ctrl_busy(ctrl_info);
3714 pqi_wait_if_ctrl_blocked(ctrl_info);
3715 if (pqi_ctrl_offline(ctrl_info))
3716 goto out;
3717
3718 rescan_needed = false;
3719 event = ctrl_info->events;
3720 for (i = 0; i < PQI_NUM_SUPPORTED_EVENTS; i++) {
3721 if (event->pending) {
3722 event->pending = false;
3723 if (event->event_type == PQI_EVENT_TYPE_OFA) {
3724 ack_event = pqi_ofa_process_event(ctrl_info, event);
3725 } else {
3726 ack_event = true;
3727 rescan_needed = true;
3728 if (event->event_type == PQI_EVENT_TYPE_LOGICAL_DEVICE)
3729 ctrl_info->logical_volume_rescan_needed = true;
3730 else if (event->event_type == PQI_EVENT_TYPE_AIO_STATE_CHANGE)
3731 pqi_disable_raid_bypass(ctrl_info);
3732 }
3733 if (ack_event)
3734 pqi_acknowledge_event(ctrl_info, event);
3735 }
3736 event++;
3737 }
3738
3739 #define PQI_RESCAN_WORK_FOR_EVENT_DELAY (5 * HZ)
3740
3741 if (rescan_needed)
3742 pqi_schedule_rescan_worker_with_delay(ctrl_info,
3743 PQI_RESCAN_WORK_FOR_EVENT_DELAY);
3744
3745 out:
3746 pqi_ctrl_unbusy(ctrl_info);
3747 }
3748
3749 #define PQI_HEARTBEAT_TIMER_INTERVAL (10 * HZ)
3750
pqi_heartbeat_timer_handler(struct timer_list * t)3751 static void pqi_heartbeat_timer_handler(struct timer_list *t)
3752 {
3753 int num_interrupts;
3754 u32 heartbeat_count;
3755 struct pqi_ctrl_info *ctrl_info = from_timer(ctrl_info, t, heartbeat_timer);
3756
3757 pqi_check_ctrl_health(ctrl_info);
3758 if (pqi_ctrl_offline(ctrl_info))
3759 return;
3760
3761 num_interrupts = atomic_read(&ctrl_info->num_interrupts);
3762 heartbeat_count = pqi_read_heartbeat_counter(ctrl_info);
3763
3764 if (num_interrupts == ctrl_info->previous_num_interrupts) {
3765 if (heartbeat_count == ctrl_info->previous_heartbeat_count) {
3766 dev_err(&ctrl_info->pci_dev->dev,
3767 "no heartbeat detected - last heartbeat count: %u\n",
3768 heartbeat_count);
3769 pqi_take_ctrl_offline(ctrl_info, PQI_NO_HEARTBEAT);
3770 return;
3771 }
3772 } else {
3773 ctrl_info->previous_num_interrupts = num_interrupts;
3774 }
3775
3776 ctrl_info->previous_heartbeat_count = heartbeat_count;
3777 mod_timer(&ctrl_info->heartbeat_timer,
3778 jiffies + PQI_HEARTBEAT_TIMER_INTERVAL);
3779 }
3780
pqi_start_heartbeat_timer(struct pqi_ctrl_info * ctrl_info)3781 static void pqi_start_heartbeat_timer(struct pqi_ctrl_info *ctrl_info)
3782 {
3783 if (!ctrl_info->heartbeat_counter)
3784 return;
3785
3786 ctrl_info->previous_num_interrupts =
3787 atomic_read(&ctrl_info->num_interrupts);
3788 ctrl_info->previous_heartbeat_count =
3789 pqi_read_heartbeat_counter(ctrl_info);
3790
3791 ctrl_info->heartbeat_timer.expires =
3792 jiffies + PQI_HEARTBEAT_TIMER_INTERVAL;
3793 add_timer(&ctrl_info->heartbeat_timer);
3794 }
3795
pqi_stop_heartbeat_timer(struct pqi_ctrl_info * ctrl_info)3796 static inline void pqi_stop_heartbeat_timer(struct pqi_ctrl_info *ctrl_info)
3797 {
3798 del_timer_sync(&ctrl_info->heartbeat_timer);
3799 }
3800
pqi_ofa_capture_event_payload(struct pqi_ctrl_info * ctrl_info,struct pqi_event * event,struct pqi_event_response * response)3801 static void pqi_ofa_capture_event_payload(struct pqi_ctrl_info *ctrl_info,
3802 struct pqi_event *event, struct pqi_event_response *response)
3803 {
3804 switch (event->event_id) {
3805 case PQI_EVENT_OFA_MEMORY_ALLOCATION:
3806 ctrl_info->ofa_bytes_requested =
3807 get_unaligned_le32(&response->data.ofa_memory_allocation.bytes_requested);
3808 break;
3809 case PQI_EVENT_OFA_CANCELED:
3810 ctrl_info->ofa_cancel_reason =
3811 get_unaligned_le16(&response->data.ofa_cancelled.reason);
3812 break;
3813 }
3814 }
3815
pqi_process_event_intr(struct pqi_ctrl_info * ctrl_info)3816 static int pqi_process_event_intr(struct pqi_ctrl_info *ctrl_info)
3817 {
3818 int num_events;
3819 pqi_index_t oq_pi;
3820 pqi_index_t oq_ci;
3821 struct pqi_event_queue *event_queue;
3822 struct pqi_event_response *response;
3823 struct pqi_event *event;
3824 int event_index;
3825
3826 event_queue = &ctrl_info->event_queue;
3827 num_events = 0;
3828 oq_ci = event_queue->oq_ci_copy;
3829
3830 while (1) {
3831 oq_pi = readl(event_queue->oq_pi);
3832 if (oq_pi >= PQI_NUM_EVENT_QUEUE_ELEMENTS) {
3833 pqi_invalid_response(ctrl_info, PQI_EVENT_PI_OUT_OF_RANGE);
3834 dev_err(&ctrl_info->pci_dev->dev,
3835 "event interrupt: producer index (%u) out of range (0-%u): consumer index: %u\n",
3836 oq_pi, PQI_NUM_EVENT_QUEUE_ELEMENTS - 1, oq_ci);
3837 return -1;
3838 }
3839
3840 if (oq_pi == oq_ci)
3841 break;
3842
3843 num_events++;
3844 response = event_queue->oq_element_array + (oq_ci * PQI_EVENT_OQ_ELEMENT_LENGTH);
3845
3846 event_index = pqi_event_type_to_event_index(response->event_type);
3847
3848 if (event_index >= 0 && response->request_acknowledge) {
3849 event = &ctrl_info->events[event_index];
3850 event->pending = true;
3851 event->event_type = response->event_type;
3852 event->event_id = get_unaligned_le16(&response->event_id);
3853 event->additional_event_id =
3854 get_unaligned_le32(&response->additional_event_id);
3855 if (event->event_type == PQI_EVENT_TYPE_OFA)
3856 pqi_ofa_capture_event_payload(ctrl_info, event, response);
3857 }
3858
3859 oq_ci = (oq_ci + 1) % PQI_NUM_EVENT_QUEUE_ELEMENTS;
3860 }
3861
3862 if (num_events) {
3863 event_queue->oq_ci_copy = oq_ci;
3864 writel(oq_ci, event_queue->oq_ci);
3865 schedule_work(&ctrl_info->event_work);
3866 }
3867
3868 return num_events;
3869 }
3870
3871 #define PQI_LEGACY_INTX_MASK 0x1
3872
pqi_configure_legacy_intx(struct pqi_ctrl_info * ctrl_info,bool enable_intx)3873 static inline void pqi_configure_legacy_intx(struct pqi_ctrl_info *ctrl_info, bool enable_intx)
3874 {
3875 u32 intx_mask;
3876 struct pqi_device_registers __iomem *pqi_registers;
3877 volatile void __iomem *register_addr;
3878
3879 pqi_registers = ctrl_info->pqi_registers;
3880
3881 if (enable_intx)
3882 register_addr = &pqi_registers->legacy_intx_mask_clear;
3883 else
3884 register_addr = &pqi_registers->legacy_intx_mask_set;
3885
3886 intx_mask = readl(register_addr);
3887 intx_mask |= PQI_LEGACY_INTX_MASK;
3888 writel(intx_mask, register_addr);
3889 }
3890
pqi_change_irq_mode(struct pqi_ctrl_info * ctrl_info,enum pqi_irq_mode new_mode)3891 static void pqi_change_irq_mode(struct pqi_ctrl_info *ctrl_info,
3892 enum pqi_irq_mode new_mode)
3893 {
3894 switch (ctrl_info->irq_mode) {
3895 case IRQ_MODE_MSIX:
3896 switch (new_mode) {
3897 case IRQ_MODE_MSIX:
3898 break;
3899 case IRQ_MODE_INTX:
3900 pqi_configure_legacy_intx(ctrl_info, true);
3901 sis_enable_intx(ctrl_info);
3902 break;
3903 case IRQ_MODE_NONE:
3904 break;
3905 }
3906 break;
3907 case IRQ_MODE_INTX:
3908 switch (new_mode) {
3909 case IRQ_MODE_MSIX:
3910 pqi_configure_legacy_intx(ctrl_info, false);
3911 sis_enable_msix(ctrl_info);
3912 break;
3913 case IRQ_MODE_INTX:
3914 break;
3915 case IRQ_MODE_NONE:
3916 pqi_configure_legacy_intx(ctrl_info, false);
3917 break;
3918 }
3919 break;
3920 case IRQ_MODE_NONE:
3921 switch (new_mode) {
3922 case IRQ_MODE_MSIX:
3923 sis_enable_msix(ctrl_info);
3924 break;
3925 case IRQ_MODE_INTX:
3926 pqi_configure_legacy_intx(ctrl_info, true);
3927 sis_enable_intx(ctrl_info);
3928 break;
3929 case IRQ_MODE_NONE:
3930 break;
3931 }
3932 break;
3933 }
3934
3935 ctrl_info->irq_mode = new_mode;
3936 }
3937
3938 #define PQI_LEGACY_INTX_PENDING 0x1
3939
pqi_is_valid_irq(struct pqi_ctrl_info * ctrl_info)3940 static inline bool pqi_is_valid_irq(struct pqi_ctrl_info *ctrl_info)
3941 {
3942 bool valid_irq;
3943 u32 intx_status;
3944
3945 switch (ctrl_info->irq_mode) {
3946 case IRQ_MODE_MSIX:
3947 valid_irq = true;
3948 break;
3949 case IRQ_MODE_INTX:
3950 intx_status = readl(&ctrl_info->pqi_registers->legacy_intx_status);
3951 if (intx_status & PQI_LEGACY_INTX_PENDING)
3952 valid_irq = true;
3953 else
3954 valid_irq = false;
3955 break;
3956 case IRQ_MODE_NONE:
3957 default:
3958 valid_irq = false;
3959 break;
3960 }
3961
3962 return valid_irq;
3963 }
3964
pqi_irq_handler(int irq,void * data)3965 static irqreturn_t pqi_irq_handler(int irq, void *data)
3966 {
3967 struct pqi_ctrl_info *ctrl_info;
3968 struct pqi_queue_group *queue_group;
3969 int num_io_responses_handled;
3970 int num_events_handled;
3971
3972 queue_group = data;
3973 ctrl_info = queue_group->ctrl_info;
3974
3975 if (!pqi_is_valid_irq(ctrl_info))
3976 return IRQ_NONE;
3977
3978 num_io_responses_handled = pqi_process_io_intr(ctrl_info, queue_group);
3979 if (num_io_responses_handled < 0)
3980 goto out;
3981
3982 if (irq == ctrl_info->event_irq) {
3983 num_events_handled = pqi_process_event_intr(ctrl_info);
3984 if (num_events_handled < 0)
3985 goto out;
3986 } else {
3987 num_events_handled = 0;
3988 }
3989
3990 if (num_io_responses_handled + num_events_handled > 0)
3991 atomic_inc(&ctrl_info->num_interrupts);
3992
3993 pqi_start_io(ctrl_info, queue_group, RAID_PATH, NULL);
3994 pqi_start_io(ctrl_info, queue_group, AIO_PATH, NULL);
3995
3996 out:
3997 return IRQ_HANDLED;
3998 }
3999
pqi_request_irqs(struct pqi_ctrl_info * ctrl_info)4000 static int pqi_request_irqs(struct pqi_ctrl_info *ctrl_info)
4001 {
4002 struct pci_dev *pci_dev = ctrl_info->pci_dev;
4003 int i;
4004 int rc;
4005
4006 ctrl_info->event_irq = pci_irq_vector(pci_dev, 0);
4007
4008 for (i = 0; i < ctrl_info->num_msix_vectors_enabled; i++) {
4009 rc = request_irq(pci_irq_vector(pci_dev, i), pqi_irq_handler, 0,
4010 DRIVER_NAME_SHORT, &ctrl_info->queue_groups[i]);
4011 if (rc) {
4012 dev_err(&pci_dev->dev,
4013 "irq %u init failed with error %d\n",
4014 pci_irq_vector(pci_dev, i), rc);
4015 return rc;
4016 }
4017 ctrl_info->num_msix_vectors_initialized++;
4018 }
4019
4020 return 0;
4021 }
4022
pqi_free_irqs(struct pqi_ctrl_info * ctrl_info)4023 static void pqi_free_irqs(struct pqi_ctrl_info *ctrl_info)
4024 {
4025 int i;
4026
4027 for (i = 0; i < ctrl_info->num_msix_vectors_initialized; i++)
4028 free_irq(pci_irq_vector(ctrl_info->pci_dev, i),
4029 &ctrl_info->queue_groups[i]);
4030
4031 ctrl_info->num_msix_vectors_initialized = 0;
4032 }
4033
pqi_enable_msix_interrupts(struct pqi_ctrl_info * ctrl_info)4034 static int pqi_enable_msix_interrupts(struct pqi_ctrl_info *ctrl_info)
4035 {
4036 int num_vectors_enabled;
4037 unsigned int flags = PCI_IRQ_MSIX;
4038
4039 if (!pqi_disable_managed_interrupts)
4040 flags |= PCI_IRQ_AFFINITY;
4041
4042 num_vectors_enabled = pci_alloc_irq_vectors(ctrl_info->pci_dev,
4043 PQI_MIN_MSIX_VECTORS, ctrl_info->num_queue_groups,
4044 flags);
4045 if (num_vectors_enabled < 0) {
4046 dev_err(&ctrl_info->pci_dev->dev,
4047 "MSI-X init failed with error %d\n",
4048 num_vectors_enabled);
4049 return num_vectors_enabled;
4050 }
4051
4052 ctrl_info->num_msix_vectors_enabled = num_vectors_enabled;
4053 ctrl_info->irq_mode = IRQ_MODE_MSIX;
4054 return 0;
4055 }
4056
pqi_disable_msix_interrupts(struct pqi_ctrl_info * ctrl_info)4057 static void pqi_disable_msix_interrupts(struct pqi_ctrl_info *ctrl_info)
4058 {
4059 if (ctrl_info->num_msix_vectors_enabled) {
4060 pci_free_irq_vectors(ctrl_info->pci_dev);
4061 ctrl_info->num_msix_vectors_enabled = 0;
4062 }
4063 }
4064
pqi_alloc_operational_queues(struct pqi_ctrl_info * ctrl_info)4065 static int pqi_alloc_operational_queues(struct pqi_ctrl_info *ctrl_info)
4066 {
4067 unsigned int i;
4068 size_t alloc_length;
4069 size_t element_array_length_per_iq;
4070 size_t element_array_length_per_oq;
4071 void *element_array;
4072 void __iomem *next_queue_index;
4073 void *aligned_pointer;
4074 unsigned int num_inbound_queues;
4075 unsigned int num_outbound_queues;
4076 unsigned int num_queue_indexes;
4077 struct pqi_queue_group *queue_group;
4078
4079 element_array_length_per_iq =
4080 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH *
4081 ctrl_info->num_elements_per_iq;
4082 element_array_length_per_oq =
4083 PQI_OPERATIONAL_OQ_ELEMENT_LENGTH *
4084 ctrl_info->num_elements_per_oq;
4085 num_inbound_queues = ctrl_info->num_queue_groups * 2;
4086 num_outbound_queues = ctrl_info->num_queue_groups;
4087 num_queue_indexes = (ctrl_info->num_queue_groups * 3) + 1;
4088
4089 aligned_pointer = NULL;
4090
4091 for (i = 0; i < num_inbound_queues; i++) {
4092 aligned_pointer = PTR_ALIGN(aligned_pointer,
4093 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
4094 aligned_pointer += element_array_length_per_iq;
4095 }
4096
4097 for (i = 0; i < num_outbound_queues; i++) {
4098 aligned_pointer = PTR_ALIGN(aligned_pointer,
4099 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
4100 aligned_pointer += element_array_length_per_oq;
4101 }
4102
4103 aligned_pointer = PTR_ALIGN(aligned_pointer,
4104 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
4105 aligned_pointer += PQI_NUM_EVENT_QUEUE_ELEMENTS *
4106 PQI_EVENT_OQ_ELEMENT_LENGTH;
4107
4108 for (i = 0; i < num_queue_indexes; i++) {
4109 aligned_pointer = PTR_ALIGN(aligned_pointer,
4110 PQI_OPERATIONAL_INDEX_ALIGNMENT);
4111 aligned_pointer += sizeof(pqi_index_t);
4112 }
4113
4114 alloc_length = (size_t)aligned_pointer +
4115 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT;
4116
4117 alloc_length += PQI_EXTRA_SGL_MEMORY;
4118
4119 ctrl_info->queue_memory_base =
4120 dma_alloc_coherent(&ctrl_info->pci_dev->dev, alloc_length,
4121 &ctrl_info->queue_memory_base_dma_handle,
4122 GFP_KERNEL);
4123
4124 if (!ctrl_info->queue_memory_base)
4125 return -ENOMEM;
4126
4127 ctrl_info->queue_memory_length = alloc_length;
4128
4129 element_array = PTR_ALIGN(ctrl_info->queue_memory_base,
4130 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
4131
4132 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
4133 queue_group = &ctrl_info->queue_groups[i];
4134 queue_group->iq_element_array[RAID_PATH] = element_array;
4135 queue_group->iq_element_array_bus_addr[RAID_PATH] =
4136 ctrl_info->queue_memory_base_dma_handle +
4137 (element_array - ctrl_info->queue_memory_base);
4138 element_array += element_array_length_per_iq;
4139 element_array = PTR_ALIGN(element_array,
4140 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
4141 queue_group->iq_element_array[AIO_PATH] = element_array;
4142 queue_group->iq_element_array_bus_addr[AIO_PATH] =
4143 ctrl_info->queue_memory_base_dma_handle +
4144 (element_array - ctrl_info->queue_memory_base);
4145 element_array += element_array_length_per_iq;
4146 element_array = PTR_ALIGN(element_array,
4147 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
4148 }
4149
4150 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
4151 queue_group = &ctrl_info->queue_groups[i];
4152 queue_group->oq_element_array = element_array;
4153 queue_group->oq_element_array_bus_addr =
4154 ctrl_info->queue_memory_base_dma_handle +
4155 (element_array - ctrl_info->queue_memory_base);
4156 element_array += element_array_length_per_oq;
4157 element_array = PTR_ALIGN(element_array,
4158 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
4159 }
4160
4161 ctrl_info->event_queue.oq_element_array = element_array;
4162 ctrl_info->event_queue.oq_element_array_bus_addr =
4163 ctrl_info->queue_memory_base_dma_handle +
4164 (element_array - ctrl_info->queue_memory_base);
4165 element_array += PQI_NUM_EVENT_QUEUE_ELEMENTS *
4166 PQI_EVENT_OQ_ELEMENT_LENGTH;
4167
4168 next_queue_index = (void __iomem *)PTR_ALIGN(element_array,
4169 PQI_OPERATIONAL_INDEX_ALIGNMENT);
4170
4171 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
4172 queue_group = &ctrl_info->queue_groups[i];
4173 queue_group->iq_ci[RAID_PATH] = next_queue_index;
4174 queue_group->iq_ci_bus_addr[RAID_PATH] =
4175 ctrl_info->queue_memory_base_dma_handle +
4176 (next_queue_index -
4177 (void __iomem *)ctrl_info->queue_memory_base);
4178 next_queue_index += sizeof(pqi_index_t);
4179 next_queue_index = PTR_ALIGN(next_queue_index,
4180 PQI_OPERATIONAL_INDEX_ALIGNMENT);
4181 queue_group->iq_ci[AIO_PATH] = next_queue_index;
4182 queue_group->iq_ci_bus_addr[AIO_PATH] =
4183 ctrl_info->queue_memory_base_dma_handle +
4184 (next_queue_index -
4185 (void __iomem *)ctrl_info->queue_memory_base);
4186 next_queue_index += sizeof(pqi_index_t);
4187 next_queue_index = PTR_ALIGN(next_queue_index,
4188 PQI_OPERATIONAL_INDEX_ALIGNMENT);
4189 queue_group->oq_pi = next_queue_index;
4190 queue_group->oq_pi_bus_addr =
4191 ctrl_info->queue_memory_base_dma_handle +
4192 (next_queue_index -
4193 (void __iomem *)ctrl_info->queue_memory_base);
4194 next_queue_index += sizeof(pqi_index_t);
4195 next_queue_index = PTR_ALIGN(next_queue_index,
4196 PQI_OPERATIONAL_INDEX_ALIGNMENT);
4197 }
4198
4199 ctrl_info->event_queue.oq_pi = next_queue_index;
4200 ctrl_info->event_queue.oq_pi_bus_addr =
4201 ctrl_info->queue_memory_base_dma_handle +
4202 (next_queue_index -
4203 (void __iomem *)ctrl_info->queue_memory_base);
4204
4205 return 0;
4206 }
4207
pqi_init_operational_queues(struct pqi_ctrl_info * ctrl_info)4208 static void pqi_init_operational_queues(struct pqi_ctrl_info *ctrl_info)
4209 {
4210 unsigned int i;
4211 u16 next_iq_id = PQI_MIN_OPERATIONAL_QUEUE_ID;
4212 u16 next_oq_id = PQI_MIN_OPERATIONAL_QUEUE_ID;
4213
4214 /*
4215 * Initialize the backpointers to the controller structure in
4216 * each operational queue group structure.
4217 */
4218 for (i = 0; i < ctrl_info->num_queue_groups; i++)
4219 ctrl_info->queue_groups[i].ctrl_info = ctrl_info;
4220
4221 /*
4222 * Assign IDs to all operational queues. Note that the IDs
4223 * assigned to operational IQs are independent of the IDs
4224 * assigned to operational OQs.
4225 */
4226 ctrl_info->event_queue.oq_id = next_oq_id++;
4227 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
4228 ctrl_info->queue_groups[i].iq_id[RAID_PATH] = next_iq_id++;
4229 ctrl_info->queue_groups[i].iq_id[AIO_PATH] = next_iq_id++;
4230 ctrl_info->queue_groups[i].oq_id = next_oq_id++;
4231 }
4232
4233 /*
4234 * Assign MSI-X table entry indexes to all queues. Note that the
4235 * interrupt for the event queue is shared with the first queue group.
4236 */
4237 ctrl_info->event_queue.int_msg_num = 0;
4238 for (i = 0; i < ctrl_info->num_queue_groups; i++)
4239 ctrl_info->queue_groups[i].int_msg_num = i;
4240
4241 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
4242 spin_lock_init(&ctrl_info->queue_groups[i].submit_lock[0]);
4243 spin_lock_init(&ctrl_info->queue_groups[i].submit_lock[1]);
4244 INIT_LIST_HEAD(&ctrl_info->queue_groups[i].request_list[0]);
4245 INIT_LIST_HEAD(&ctrl_info->queue_groups[i].request_list[1]);
4246 }
4247 }
4248
pqi_alloc_admin_queues(struct pqi_ctrl_info * ctrl_info)4249 static int pqi_alloc_admin_queues(struct pqi_ctrl_info *ctrl_info)
4250 {
4251 size_t alloc_length;
4252 struct pqi_admin_queues_aligned *admin_queues_aligned;
4253 struct pqi_admin_queues *admin_queues;
4254
4255 alloc_length = sizeof(struct pqi_admin_queues_aligned) +
4256 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT;
4257
4258 ctrl_info->admin_queue_memory_base =
4259 dma_alloc_coherent(&ctrl_info->pci_dev->dev, alloc_length,
4260 &ctrl_info->admin_queue_memory_base_dma_handle,
4261 GFP_KERNEL);
4262
4263 if (!ctrl_info->admin_queue_memory_base)
4264 return -ENOMEM;
4265
4266 ctrl_info->admin_queue_memory_length = alloc_length;
4267
4268 admin_queues = &ctrl_info->admin_queues;
4269 admin_queues_aligned = PTR_ALIGN(ctrl_info->admin_queue_memory_base,
4270 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
4271 admin_queues->iq_element_array =
4272 &admin_queues_aligned->iq_element_array;
4273 admin_queues->oq_element_array =
4274 &admin_queues_aligned->oq_element_array;
4275 admin_queues->iq_ci =
4276 (pqi_index_t __iomem *)&admin_queues_aligned->iq_ci;
4277 admin_queues->oq_pi =
4278 (pqi_index_t __iomem *)&admin_queues_aligned->oq_pi;
4279
4280 admin_queues->iq_element_array_bus_addr =
4281 ctrl_info->admin_queue_memory_base_dma_handle +
4282 (admin_queues->iq_element_array -
4283 ctrl_info->admin_queue_memory_base);
4284 admin_queues->oq_element_array_bus_addr =
4285 ctrl_info->admin_queue_memory_base_dma_handle +
4286 (admin_queues->oq_element_array -
4287 ctrl_info->admin_queue_memory_base);
4288 admin_queues->iq_ci_bus_addr =
4289 ctrl_info->admin_queue_memory_base_dma_handle +
4290 ((void __iomem *)admin_queues->iq_ci -
4291 (void __iomem *)ctrl_info->admin_queue_memory_base);
4292 admin_queues->oq_pi_bus_addr =
4293 ctrl_info->admin_queue_memory_base_dma_handle +
4294 ((void __iomem *)admin_queues->oq_pi -
4295 (void __iomem *)ctrl_info->admin_queue_memory_base);
4296
4297 return 0;
4298 }
4299
4300 #define PQI_ADMIN_QUEUE_CREATE_TIMEOUT_JIFFIES HZ
4301 #define PQI_ADMIN_QUEUE_CREATE_POLL_INTERVAL_MSECS 1
4302
pqi_create_admin_queues(struct pqi_ctrl_info * ctrl_info)4303 static int pqi_create_admin_queues(struct pqi_ctrl_info *ctrl_info)
4304 {
4305 struct pqi_device_registers __iomem *pqi_registers;
4306 struct pqi_admin_queues *admin_queues;
4307 unsigned long timeout;
4308 u8 status;
4309 u32 reg;
4310
4311 pqi_registers = ctrl_info->pqi_registers;
4312 admin_queues = &ctrl_info->admin_queues;
4313
4314 writeq((u64)admin_queues->iq_element_array_bus_addr,
4315 &pqi_registers->admin_iq_element_array_addr);
4316 writeq((u64)admin_queues->oq_element_array_bus_addr,
4317 &pqi_registers->admin_oq_element_array_addr);
4318 writeq((u64)admin_queues->iq_ci_bus_addr,
4319 &pqi_registers->admin_iq_ci_addr);
4320 writeq((u64)admin_queues->oq_pi_bus_addr,
4321 &pqi_registers->admin_oq_pi_addr);
4322
4323 reg = PQI_ADMIN_IQ_NUM_ELEMENTS |
4324 (PQI_ADMIN_OQ_NUM_ELEMENTS << 8) |
4325 (admin_queues->int_msg_num << 16);
4326 writel(reg, &pqi_registers->admin_iq_num_elements);
4327
4328 writel(PQI_CREATE_ADMIN_QUEUE_PAIR,
4329 &pqi_registers->function_and_status_code);
4330
4331 timeout = PQI_ADMIN_QUEUE_CREATE_TIMEOUT_JIFFIES + jiffies;
4332 while (1) {
4333 msleep(PQI_ADMIN_QUEUE_CREATE_POLL_INTERVAL_MSECS);
4334 status = readb(&pqi_registers->function_and_status_code);
4335 if (status == PQI_STATUS_IDLE)
4336 break;
4337 if (time_after(jiffies, timeout))
4338 return -ETIMEDOUT;
4339 }
4340
4341 /*
4342 * The offset registers are not initialized to the correct
4343 * offsets until *after* the create admin queue pair command
4344 * completes successfully.
4345 */
4346 admin_queues->iq_pi = ctrl_info->iomem_base +
4347 PQI_DEVICE_REGISTERS_OFFSET +
4348 readq(&pqi_registers->admin_iq_pi_offset);
4349 admin_queues->oq_ci = ctrl_info->iomem_base +
4350 PQI_DEVICE_REGISTERS_OFFSET +
4351 readq(&pqi_registers->admin_oq_ci_offset);
4352
4353 return 0;
4354 }
4355
pqi_submit_admin_request(struct pqi_ctrl_info * ctrl_info,struct pqi_general_admin_request * request)4356 static void pqi_submit_admin_request(struct pqi_ctrl_info *ctrl_info,
4357 struct pqi_general_admin_request *request)
4358 {
4359 struct pqi_admin_queues *admin_queues;
4360 void *next_element;
4361 pqi_index_t iq_pi;
4362
4363 admin_queues = &ctrl_info->admin_queues;
4364 iq_pi = admin_queues->iq_pi_copy;
4365
4366 next_element = admin_queues->iq_element_array +
4367 (iq_pi * PQI_ADMIN_IQ_ELEMENT_LENGTH);
4368
4369 memcpy(next_element, request, sizeof(*request));
4370
4371 iq_pi = (iq_pi + 1) % PQI_ADMIN_IQ_NUM_ELEMENTS;
4372 admin_queues->iq_pi_copy = iq_pi;
4373
4374 /*
4375 * This write notifies the controller that an IU is available to be
4376 * processed.
4377 */
4378 writel(iq_pi, admin_queues->iq_pi);
4379 }
4380
4381 #define PQI_ADMIN_REQUEST_TIMEOUT_SECS 60
4382
pqi_poll_for_admin_response(struct pqi_ctrl_info * ctrl_info,struct pqi_general_admin_response * response)4383 static int pqi_poll_for_admin_response(struct pqi_ctrl_info *ctrl_info,
4384 struct pqi_general_admin_response *response)
4385 {
4386 struct pqi_admin_queues *admin_queues;
4387 pqi_index_t oq_pi;
4388 pqi_index_t oq_ci;
4389 unsigned long timeout;
4390
4391 admin_queues = &ctrl_info->admin_queues;
4392 oq_ci = admin_queues->oq_ci_copy;
4393
4394 timeout = (PQI_ADMIN_REQUEST_TIMEOUT_SECS * HZ) + jiffies;
4395
4396 while (1) {
4397 oq_pi = readl(admin_queues->oq_pi);
4398 if (oq_pi != oq_ci)
4399 break;
4400 if (time_after(jiffies, timeout)) {
4401 dev_err(&ctrl_info->pci_dev->dev,
4402 "timed out waiting for admin response\n");
4403 return -ETIMEDOUT;
4404 }
4405 if (!sis_is_firmware_running(ctrl_info))
4406 return -ENXIO;
4407 usleep_range(1000, 2000);
4408 }
4409
4410 memcpy(response, admin_queues->oq_element_array +
4411 (oq_ci * PQI_ADMIN_OQ_ELEMENT_LENGTH), sizeof(*response));
4412
4413 oq_ci = (oq_ci + 1) % PQI_ADMIN_OQ_NUM_ELEMENTS;
4414 admin_queues->oq_ci_copy = oq_ci;
4415 writel(oq_ci, admin_queues->oq_ci);
4416
4417 return 0;
4418 }
4419
pqi_start_io(struct pqi_ctrl_info * ctrl_info,struct pqi_queue_group * queue_group,enum pqi_io_path path,struct pqi_io_request * io_request)4420 static void pqi_start_io(struct pqi_ctrl_info *ctrl_info,
4421 struct pqi_queue_group *queue_group, enum pqi_io_path path,
4422 struct pqi_io_request *io_request)
4423 {
4424 struct pqi_io_request *next;
4425 void *next_element;
4426 pqi_index_t iq_pi;
4427 pqi_index_t iq_ci;
4428 size_t iu_length;
4429 unsigned long flags;
4430 unsigned int num_elements_needed;
4431 unsigned int num_elements_to_end_of_queue;
4432 size_t copy_count;
4433 struct pqi_iu_header *request;
4434
4435 spin_lock_irqsave(&queue_group->submit_lock[path], flags);
4436
4437 if (io_request) {
4438 io_request->queue_group = queue_group;
4439 list_add_tail(&io_request->request_list_entry,
4440 &queue_group->request_list[path]);
4441 }
4442
4443 iq_pi = queue_group->iq_pi_copy[path];
4444
4445 list_for_each_entry_safe(io_request, next,
4446 &queue_group->request_list[path], request_list_entry) {
4447
4448 request = io_request->iu;
4449
4450 iu_length = get_unaligned_le16(&request->iu_length) +
4451 PQI_REQUEST_HEADER_LENGTH;
4452 num_elements_needed =
4453 DIV_ROUND_UP(iu_length,
4454 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
4455
4456 iq_ci = readl(queue_group->iq_ci[path]);
4457
4458 if (num_elements_needed > pqi_num_elements_free(iq_pi, iq_ci,
4459 ctrl_info->num_elements_per_iq))
4460 break;
4461
4462 put_unaligned_le16(queue_group->oq_id,
4463 &request->response_queue_id);
4464
4465 next_element = queue_group->iq_element_array[path] +
4466 (iq_pi * PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
4467
4468 num_elements_to_end_of_queue =
4469 ctrl_info->num_elements_per_iq - iq_pi;
4470
4471 if (num_elements_needed <= num_elements_to_end_of_queue) {
4472 memcpy(next_element, request, iu_length);
4473 } else {
4474 copy_count = num_elements_to_end_of_queue *
4475 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH;
4476 memcpy(next_element, request, copy_count);
4477 memcpy(queue_group->iq_element_array[path],
4478 (u8 *)request + copy_count,
4479 iu_length - copy_count);
4480 }
4481
4482 iq_pi = (iq_pi + num_elements_needed) %
4483 ctrl_info->num_elements_per_iq;
4484
4485 list_del(&io_request->request_list_entry);
4486 }
4487
4488 if (iq_pi != queue_group->iq_pi_copy[path]) {
4489 queue_group->iq_pi_copy[path] = iq_pi;
4490 /*
4491 * This write notifies the controller that one or more IUs are
4492 * available to be processed.
4493 */
4494 writel(iq_pi, queue_group->iq_pi[path]);
4495 }
4496
4497 spin_unlock_irqrestore(&queue_group->submit_lock[path], flags);
4498 }
4499
4500 #define PQI_WAIT_FOR_COMPLETION_IO_TIMEOUT_SECS 10
4501
pqi_wait_for_completion_io(struct pqi_ctrl_info * ctrl_info,struct completion * wait)4502 static int pqi_wait_for_completion_io(struct pqi_ctrl_info *ctrl_info,
4503 struct completion *wait)
4504 {
4505 int rc;
4506
4507 while (1) {
4508 if (wait_for_completion_io_timeout(wait,
4509 PQI_WAIT_FOR_COMPLETION_IO_TIMEOUT_SECS * HZ)) {
4510 rc = 0;
4511 break;
4512 }
4513
4514 pqi_check_ctrl_health(ctrl_info);
4515 if (pqi_ctrl_offline(ctrl_info)) {
4516 rc = -ENXIO;
4517 break;
4518 }
4519 }
4520
4521 return rc;
4522 }
4523
pqi_raid_synchronous_complete(struct pqi_io_request * io_request,void * context)4524 static void pqi_raid_synchronous_complete(struct pqi_io_request *io_request,
4525 void *context)
4526 {
4527 struct completion *waiting = context;
4528
4529 complete(waiting);
4530 }
4531
pqi_process_raid_io_error_synchronous(struct pqi_raid_error_info * error_info)4532 static int pqi_process_raid_io_error_synchronous(
4533 struct pqi_raid_error_info *error_info)
4534 {
4535 int rc = -EIO;
4536
4537 switch (error_info->data_out_result) {
4538 case PQI_DATA_IN_OUT_GOOD:
4539 if (error_info->status == SAM_STAT_GOOD)
4540 rc = 0;
4541 break;
4542 case PQI_DATA_IN_OUT_UNDERFLOW:
4543 if (error_info->status == SAM_STAT_GOOD ||
4544 error_info->status == SAM_STAT_CHECK_CONDITION)
4545 rc = 0;
4546 break;
4547 case PQI_DATA_IN_OUT_ABORTED:
4548 rc = PQI_CMD_STATUS_ABORTED;
4549 break;
4550 }
4551
4552 return rc;
4553 }
4554
pqi_is_blockable_request(struct pqi_iu_header * request)4555 static inline bool pqi_is_blockable_request(struct pqi_iu_header *request)
4556 {
4557 return (request->driver_flags & PQI_DRIVER_NONBLOCKABLE_REQUEST) == 0;
4558 }
4559
pqi_submit_raid_request_synchronous(struct pqi_ctrl_info * ctrl_info,struct pqi_iu_header * request,unsigned int flags,struct pqi_raid_error_info * error_info)4560 static int pqi_submit_raid_request_synchronous(struct pqi_ctrl_info *ctrl_info,
4561 struct pqi_iu_header *request, unsigned int flags,
4562 struct pqi_raid_error_info *error_info)
4563 {
4564 int rc = 0;
4565 struct pqi_io_request *io_request;
4566 size_t iu_length;
4567 DECLARE_COMPLETION_ONSTACK(wait);
4568
4569 if (flags & PQI_SYNC_FLAGS_INTERRUPTABLE) {
4570 if (down_interruptible(&ctrl_info->sync_request_sem))
4571 return -ERESTARTSYS;
4572 } else {
4573 down(&ctrl_info->sync_request_sem);
4574 }
4575
4576 pqi_ctrl_busy(ctrl_info);
4577 /*
4578 * Wait for other admin queue updates such as;
4579 * config table changes, OFA memory updates, ...
4580 */
4581 if (pqi_is_blockable_request(request))
4582 pqi_wait_if_ctrl_blocked(ctrl_info);
4583
4584 if (pqi_ctrl_offline(ctrl_info)) {
4585 rc = -ENXIO;
4586 goto out;
4587 }
4588
4589 io_request = pqi_alloc_io_request(ctrl_info);
4590
4591 put_unaligned_le16(io_request->index,
4592 &(((struct pqi_raid_path_request *)request)->request_id));
4593
4594 if (request->iu_type == PQI_REQUEST_IU_RAID_PATH_IO)
4595 ((struct pqi_raid_path_request *)request)->error_index =
4596 ((struct pqi_raid_path_request *)request)->request_id;
4597
4598 iu_length = get_unaligned_le16(&request->iu_length) +
4599 PQI_REQUEST_HEADER_LENGTH;
4600 memcpy(io_request->iu, request, iu_length);
4601
4602 io_request->io_complete_callback = pqi_raid_synchronous_complete;
4603 io_request->context = &wait;
4604
4605 pqi_start_io(ctrl_info, &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP], RAID_PATH,
4606 io_request);
4607
4608 pqi_wait_for_completion_io(ctrl_info, &wait);
4609
4610 if (error_info) {
4611 if (io_request->error_info)
4612 memcpy(error_info, io_request->error_info, sizeof(*error_info));
4613 else
4614 memset(error_info, 0, sizeof(*error_info));
4615 } else if (rc == 0 && io_request->error_info) {
4616 rc = pqi_process_raid_io_error_synchronous(io_request->error_info);
4617 }
4618
4619 pqi_free_io_request(io_request);
4620
4621 out:
4622 pqi_ctrl_unbusy(ctrl_info);
4623 up(&ctrl_info->sync_request_sem);
4624
4625 return rc;
4626 }
4627
pqi_validate_admin_response(struct pqi_general_admin_response * response,u8 expected_function_code)4628 static int pqi_validate_admin_response(
4629 struct pqi_general_admin_response *response, u8 expected_function_code)
4630 {
4631 if (response->header.iu_type != PQI_RESPONSE_IU_GENERAL_ADMIN)
4632 return -EINVAL;
4633
4634 if (get_unaligned_le16(&response->header.iu_length) !=
4635 PQI_GENERAL_ADMIN_IU_LENGTH)
4636 return -EINVAL;
4637
4638 if (response->function_code != expected_function_code)
4639 return -EINVAL;
4640
4641 if (response->status != PQI_GENERAL_ADMIN_STATUS_SUCCESS)
4642 return -EINVAL;
4643
4644 return 0;
4645 }
4646
pqi_submit_admin_request_synchronous(struct pqi_ctrl_info * ctrl_info,struct pqi_general_admin_request * request,struct pqi_general_admin_response * response)4647 static int pqi_submit_admin_request_synchronous(
4648 struct pqi_ctrl_info *ctrl_info,
4649 struct pqi_general_admin_request *request,
4650 struct pqi_general_admin_response *response)
4651 {
4652 int rc;
4653
4654 pqi_submit_admin_request(ctrl_info, request);
4655
4656 rc = pqi_poll_for_admin_response(ctrl_info, response);
4657
4658 if (rc == 0)
4659 rc = pqi_validate_admin_response(response, request->function_code);
4660
4661 return rc;
4662 }
4663
pqi_report_device_capability(struct pqi_ctrl_info * ctrl_info)4664 static int pqi_report_device_capability(struct pqi_ctrl_info *ctrl_info)
4665 {
4666 int rc;
4667 struct pqi_general_admin_request request;
4668 struct pqi_general_admin_response response;
4669 struct pqi_device_capability *capability;
4670 struct pqi_iu_layer_descriptor *sop_iu_layer_descriptor;
4671
4672 capability = kmalloc(sizeof(*capability), GFP_KERNEL);
4673 if (!capability)
4674 return -ENOMEM;
4675
4676 memset(&request, 0, sizeof(request));
4677
4678 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4679 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4680 &request.header.iu_length);
4681 request.function_code =
4682 PQI_GENERAL_ADMIN_FUNCTION_REPORT_DEVICE_CAPABILITY;
4683 put_unaligned_le32(sizeof(*capability),
4684 &request.data.report_device_capability.buffer_length);
4685
4686 rc = pqi_map_single(ctrl_info->pci_dev,
4687 &request.data.report_device_capability.sg_descriptor,
4688 capability, sizeof(*capability),
4689 DMA_FROM_DEVICE);
4690 if (rc)
4691 goto out;
4692
4693 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request, &response);
4694
4695 pqi_pci_unmap(ctrl_info->pci_dev,
4696 &request.data.report_device_capability.sg_descriptor, 1,
4697 DMA_FROM_DEVICE);
4698
4699 if (rc)
4700 goto out;
4701
4702 if (response.status != PQI_GENERAL_ADMIN_STATUS_SUCCESS) {
4703 rc = -EIO;
4704 goto out;
4705 }
4706
4707 ctrl_info->max_inbound_queues =
4708 get_unaligned_le16(&capability->max_inbound_queues);
4709 ctrl_info->max_elements_per_iq =
4710 get_unaligned_le16(&capability->max_elements_per_iq);
4711 ctrl_info->max_iq_element_length =
4712 get_unaligned_le16(&capability->max_iq_element_length)
4713 * 16;
4714 ctrl_info->max_outbound_queues =
4715 get_unaligned_le16(&capability->max_outbound_queues);
4716 ctrl_info->max_elements_per_oq =
4717 get_unaligned_le16(&capability->max_elements_per_oq);
4718 ctrl_info->max_oq_element_length =
4719 get_unaligned_le16(&capability->max_oq_element_length)
4720 * 16;
4721
4722 sop_iu_layer_descriptor =
4723 &capability->iu_layer_descriptors[PQI_PROTOCOL_SOP];
4724
4725 ctrl_info->max_inbound_iu_length_per_firmware =
4726 get_unaligned_le16(
4727 &sop_iu_layer_descriptor->max_inbound_iu_length);
4728 ctrl_info->inbound_spanning_supported =
4729 sop_iu_layer_descriptor->inbound_spanning_supported;
4730 ctrl_info->outbound_spanning_supported =
4731 sop_iu_layer_descriptor->outbound_spanning_supported;
4732
4733 out:
4734 kfree(capability);
4735
4736 return rc;
4737 }
4738
pqi_validate_device_capability(struct pqi_ctrl_info * ctrl_info)4739 static int pqi_validate_device_capability(struct pqi_ctrl_info *ctrl_info)
4740 {
4741 if (ctrl_info->max_iq_element_length <
4742 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) {
4743 dev_err(&ctrl_info->pci_dev->dev,
4744 "max. inbound queue element length of %d is less than the required length of %d\n",
4745 ctrl_info->max_iq_element_length,
4746 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
4747 return -EINVAL;
4748 }
4749
4750 if (ctrl_info->max_oq_element_length <
4751 PQI_OPERATIONAL_OQ_ELEMENT_LENGTH) {
4752 dev_err(&ctrl_info->pci_dev->dev,
4753 "max. outbound queue element length of %d is less than the required length of %d\n",
4754 ctrl_info->max_oq_element_length,
4755 PQI_OPERATIONAL_OQ_ELEMENT_LENGTH);
4756 return -EINVAL;
4757 }
4758
4759 if (ctrl_info->max_inbound_iu_length_per_firmware <
4760 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) {
4761 dev_err(&ctrl_info->pci_dev->dev,
4762 "max. inbound IU length of %u is less than the min. required length of %d\n",
4763 ctrl_info->max_inbound_iu_length_per_firmware,
4764 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
4765 return -EINVAL;
4766 }
4767
4768 if (!ctrl_info->inbound_spanning_supported) {
4769 dev_err(&ctrl_info->pci_dev->dev,
4770 "the controller does not support inbound spanning\n");
4771 return -EINVAL;
4772 }
4773
4774 if (ctrl_info->outbound_spanning_supported) {
4775 dev_err(&ctrl_info->pci_dev->dev,
4776 "the controller supports outbound spanning but this driver does not\n");
4777 return -EINVAL;
4778 }
4779
4780 return 0;
4781 }
4782
pqi_create_event_queue(struct pqi_ctrl_info * ctrl_info)4783 static int pqi_create_event_queue(struct pqi_ctrl_info *ctrl_info)
4784 {
4785 int rc;
4786 struct pqi_event_queue *event_queue;
4787 struct pqi_general_admin_request request;
4788 struct pqi_general_admin_response response;
4789
4790 event_queue = &ctrl_info->event_queue;
4791
4792 /*
4793 * Create OQ (Outbound Queue - device to host queue) to dedicate
4794 * to events.
4795 */
4796 memset(&request, 0, sizeof(request));
4797 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4798 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4799 &request.header.iu_length);
4800 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_OQ;
4801 put_unaligned_le16(event_queue->oq_id,
4802 &request.data.create_operational_oq.queue_id);
4803 put_unaligned_le64((u64)event_queue->oq_element_array_bus_addr,
4804 &request.data.create_operational_oq.element_array_addr);
4805 put_unaligned_le64((u64)event_queue->oq_pi_bus_addr,
4806 &request.data.create_operational_oq.pi_addr);
4807 put_unaligned_le16(PQI_NUM_EVENT_QUEUE_ELEMENTS,
4808 &request.data.create_operational_oq.num_elements);
4809 put_unaligned_le16(PQI_EVENT_OQ_ELEMENT_LENGTH / 16,
4810 &request.data.create_operational_oq.element_length);
4811 request.data.create_operational_oq.queue_protocol = PQI_PROTOCOL_SOP;
4812 put_unaligned_le16(event_queue->int_msg_num,
4813 &request.data.create_operational_oq.int_msg_num);
4814
4815 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4816 &response);
4817 if (rc)
4818 return rc;
4819
4820 event_queue->oq_ci = ctrl_info->iomem_base +
4821 PQI_DEVICE_REGISTERS_OFFSET +
4822 get_unaligned_le64(
4823 &response.data.create_operational_oq.oq_ci_offset);
4824
4825 return 0;
4826 }
4827
pqi_create_queue_group(struct pqi_ctrl_info * ctrl_info,unsigned int group_number)4828 static int pqi_create_queue_group(struct pqi_ctrl_info *ctrl_info,
4829 unsigned int group_number)
4830 {
4831 int rc;
4832 struct pqi_queue_group *queue_group;
4833 struct pqi_general_admin_request request;
4834 struct pqi_general_admin_response response;
4835
4836 queue_group = &ctrl_info->queue_groups[group_number];
4837
4838 /*
4839 * Create IQ (Inbound Queue - host to device queue) for
4840 * RAID path.
4841 */
4842 memset(&request, 0, sizeof(request));
4843 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4844 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4845 &request.header.iu_length);
4846 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_IQ;
4847 put_unaligned_le16(queue_group->iq_id[RAID_PATH],
4848 &request.data.create_operational_iq.queue_id);
4849 put_unaligned_le64(
4850 (u64)queue_group->iq_element_array_bus_addr[RAID_PATH],
4851 &request.data.create_operational_iq.element_array_addr);
4852 put_unaligned_le64((u64)queue_group->iq_ci_bus_addr[RAID_PATH],
4853 &request.data.create_operational_iq.ci_addr);
4854 put_unaligned_le16(ctrl_info->num_elements_per_iq,
4855 &request.data.create_operational_iq.num_elements);
4856 put_unaligned_le16(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH / 16,
4857 &request.data.create_operational_iq.element_length);
4858 request.data.create_operational_iq.queue_protocol = PQI_PROTOCOL_SOP;
4859
4860 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4861 &response);
4862 if (rc) {
4863 dev_err(&ctrl_info->pci_dev->dev,
4864 "error creating inbound RAID queue\n");
4865 return rc;
4866 }
4867
4868 queue_group->iq_pi[RAID_PATH] = ctrl_info->iomem_base +
4869 PQI_DEVICE_REGISTERS_OFFSET +
4870 get_unaligned_le64(
4871 &response.data.create_operational_iq.iq_pi_offset);
4872
4873 /*
4874 * Create IQ (Inbound Queue - host to device queue) for
4875 * Advanced I/O (AIO) path.
4876 */
4877 memset(&request, 0, sizeof(request));
4878 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4879 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4880 &request.header.iu_length);
4881 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_IQ;
4882 put_unaligned_le16(queue_group->iq_id[AIO_PATH],
4883 &request.data.create_operational_iq.queue_id);
4884 put_unaligned_le64((u64)queue_group->
4885 iq_element_array_bus_addr[AIO_PATH],
4886 &request.data.create_operational_iq.element_array_addr);
4887 put_unaligned_le64((u64)queue_group->iq_ci_bus_addr[AIO_PATH],
4888 &request.data.create_operational_iq.ci_addr);
4889 put_unaligned_le16(ctrl_info->num_elements_per_iq,
4890 &request.data.create_operational_iq.num_elements);
4891 put_unaligned_le16(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH / 16,
4892 &request.data.create_operational_iq.element_length);
4893 request.data.create_operational_iq.queue_protocol = PQI_PROTOCOL_SOP;
4894
4895 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4896 &response);
4897 if (rc) {
4898 dev_err(&ctrl_info->pci_dev->dev,
4899 "error creating inbound AIO queue\n");
4900 return rc;
4901 }
4902
4903 queue_group->iq_pi[AIO_PATH] = ctrl_info->iomem_base +
4904 PQI_DEVICE_REGISTERS_OFFSET +
4905 get_unaligned_le64(
4906 &response.data.create_operational_iq.iq_pi_offset);
4907
4908 /*
4909 * Designate the 2nd IQ as the AIO path. By default, all IQs are
4910 * assumed to be for RAID path I/O unless we change the queue's
4911 * property.
4912 */
4913 memset(&request, 0, sizeof(request));
4914 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4915 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4916 &request.header.iu_length);
4917 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CHANGE_IQ_PROPERTY;
4918 put_unaligned_le16(queue_group->iq_id[AIO_PATH],
4919 &request.data.change_operational_iq_properties.queue_id);
4920 put_unaligned_le32(PQI_IQ_PROPERTY_IS_AIO_QUEUE,
4921 &request.data.change_operational_iq_properties.vendor_specific);
4922
4923 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4924 &response);
4925 if (rc) {
4926 dev_err(&ctrl_info->pci_dev->dev,
4927 "error changing queue property\n");
4928 return rc;
4929 }
4930
4931 /*
4932 * Create OQ (Outbound Queue - device to host queue).
4933 */
4934 memset(&request, 0, sizeof(request));
4935 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4936 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4937 &request.header.iu_length);
4938 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_OQ;
4939 put_unaligned_le16(queue_group->oq_id,
4940 &request.data.create_operational_oq.queue_id);
4941 put_unaligned_le64((u64)queue_group->oq_element_array_bus_addr,
4942 &request.data.create_operational_oq.element_array_addr);
4943 put_unaligned_le64((u64)queue_group->oq_pi_bus_addr,
4944 &request.data.create_operational_oq.pi_addr);
4945 put_unaligned_le16(ctrl_info->num_elements_per_oq,
4946 &request.data.create_operational_oq.num_elements);
4947 put_unaligned_le16(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH / 16,
4948 &request.data.create_operational_oq.element_length);
4949 request.data.create_operational_oq.queue_protocol = PQI_PROTOCOL_SOP;
4950 put_unaligned_le16(queue_group->int_msg_num,
4951 &request.data.create_operational_oq.int_msg_num);
4952
4953 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4954 &response);
4955 if (rc) {
4956 dev_err(&ctrl_info->pci_dev->dev,
4957 "error creating outbound queue\n");
4958 return rc;
4959 }
4960
4961 queue_group->oq_ci = ctrl_info->iomem_base +
4962 PQI_DEVICE_REGISTERS_OFFSET +
4963 get_unaligned_le64(
4964 &response.data.create_operational_oq.oq_ci_offset);
4965
4966 return 0;
4967 }
4968
pqi_create_queues(struct pqi_ctrl_info * ctrl_info)4969 static int pqi_create_queues(struct pqi_ctrl_info *ctrl_info)
4970 {
4971 int rc;
4972 unsigned int i;
4973
4974 rc = pqi_create_event_queue(ctrl_info);
4975 if (rc) {
4976 dev_err(&ctrl_info->pci_dev->dev,
4977 "error creating event queue\n");
4978 return rc;
4979 }
4980
4981 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
4982 rc = pqi_create_queue_group(ctrl_info, i);
4983 if (rc) {
4984 dev_err(&ctrl_info->pci_dev->dev,
4985 "error creating queue group number %u/%u\n",
4986 i, ctrl_info->num_queue_groups);
4987 return rc;
4988 }
4989 }
4990
4991 return 0;
4992 }
4993
4994 #define PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH \
4995 struct_size((struct pqi_event_config *)0, descriptors, PQI_MAX_EVENT_DESCRIPTORS)
4996
pqi_configure_events(struct pqi_ctrl_info * ctrl_info,bool enable_events)4997 static int pqi_configure_events(struct pqi_ctrl_info *ctrl_info,
4998 bool enable_events)
4999 {
5000 int rc;
5001 unsigned int i;
5002 struct pqi_event_config *event_config;
5003 struct pqi_event_descriptor *event_descriptor;
5004 struct pqi_general_management_request request;
5005
5006 event_config = kmalloc(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
5007 GFP_KERNEL);
5008 if (!event_config)
5009 return -ENOMEM;
5010
5011 memset(&request, 0, sizeof(request));
5012
5013 request.header.iu_type = PQI_REQUEST_IU_REPORT_VENDOR_EVENT_CONFIG;
5014 put_unaligned_le16(offsetof(struct pqi_general_management_request,
5015 data.report_event_configuration.sg_descriptors[1]) -
5016 PQI_REQUEST_HEADER_LENGTH, &request.header.iu_length);
5017 put_unaligned_le32(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
5018 &request.data.report_event_configuration.buffer_length);
5019
5020 rc = pqi_map_single(ctrl_info->pci_dev,
5021 request.data.report_event_configuration.sg_descriptors,
5022 event_config, PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
5023 DMA_FROM_DEVICE);
5024 if (rc)
5025 goto out;
5026
5027 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0, NULL);
5028
5029 pqi_pci_unmap(ctrl_info->pci_dev,
5030 request.data.report_event_configuration.sg_descriptors, 1,
5031 DMA_FROM_DEVICE);
5032
5033 if (rc)
5034 goto out;
5035
5036 for (i = 0; i < event_config->num_event_descriptors; i++) {
5037 event_descriptor = &event_config->descriptors[i];
5038 if (enable_events &&
5039 pqi_is_supported_event(event_descriptor->event_type))
5040 put_unaligned_le16(ctrl_info->event_queue.oq_id,
5041 &event_descriptor->oq_id);
5042 else
5043 put_unaligned_le16(0, &event_descriptor->oq_id);
5044 }
5045
5046 memset(&request, 0, sizeof(request));
5047
5048 request.header.iu_type = PQI_REQUEST_IU_SET_VENDOR_EVENT_CONFIG;
5049 put_unaligned_le16(offsetof(struct pqi_general_management_request,
5050 data.report_event_configuration.sg_descriptors[1]) -
5051 PQI_REQUEST_HEADER_LENGTH, &request.header.iu_length);
5052 put_unaligned_le32(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
5053 &request.data.report_event_configuration.buffer_length);
5054
5055 rc = pqi_map_single(ctrl_info->pci_dev,
5056 request.data.report_event_configuration.sg_descriptors,
5057 event_config, PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
5058 DMA_TO_DEVICE);
5059 if (rc)
5060 goto out;
5061
5062 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0, NULL);
5063
5064 pqi_pci_unmap(ctrl_info->pci_dev,
5065 request.data.report_event_configuration.sg_descriptors, 1,
5066 DMA_TO_DEVICE);
5067
5068 out:
5069 kfree(event_config);
5070
5071 return rc;
5072 }
5073
pqi_enable_events(struct pqi_ctrl_info * ctrl_info)5074 static inline int pqi_enable_events(struct pqi_ctrl_info *ctrl_info)
5075 {
5076 return pqi_configure_events(ctrl_info, true);
5077 }
5078
pqi_free_all_io_requests(struct pqi_ctrl_info * ctrl_info)5079 static void pqi_free_all_io_requests(struct pqi_ctrl_info *ctrl_info)
5080 {
5081 unsigned int i;
5082 struct device *dev;
5083 size_t sg_chain_buffer_length;
5084 struct pqi_io_request *io_request;
5085
5086 if (!ctrl_info->io_request_pool)
5087 return;
5088
5089 dev = &ctrl_info->pci_dev->dev;
5090 sg_chain_buffer_length = ctrl_info->sg_chain_buffer_length;
5091 io_request = ctrl_info->io_request_pool;
5092
5093 for (i = 0; i < ctrl_info->max_io_slots; i++) {
5094 kfree(io_request->iu);
5095 if (!io_request->sg_chain_buffer)
5096 break;
5097 dma_free_coherent(dev, sg_chain_buffer_length,
5098 io_request->sg_chain_buffer,
5099 io_request->sg_chain_buffer_dma_handle);
5100 io_request++;
5101 }
5102
5103 kfree(ctrl_info->io_request_pool);
5104 ctrl_info->io_request_pool = NULL;
5105 }
5106
pqi_alloc_error_buffer(struct pqi_ctrl_info * ctrl_info)5107 static inline int pqi_alloc_error_buffer(struct pqi_ctrl_info *ctrl_info)
5108 {
5109 ctrl_info->error_buffer = dma_alloc_coherent(&ctrl_info->pci_dev->dev,
5110 ctrl_info->error_buffer_length,
5111 &ctrl_info->error_buffer_dma_handle,
5112 GFP_KERNEL);
5113 if (!ctrl_info->error_buffer)
5114 return -ENOMEM;
5115
5116 return 0;
5117 }
5118
pqi_alloc_io_resources(struct pqi_ctrl_info * ctrl_info)5119 static int pqi_alloc_io_resources(struct pqi_ctrl_info *ctrl_info)
5120 {
5121 unsigned int i;
5122 void *sg_chain_buffer;
5123 size_t sg_chain_buffer_length;
5124 dma_addr_t sg_chain_buffer_dma_handle;
5125 struct device *dev;
5126 struct pqi_io_request *io_request;
5127
5128 ctrl_info->io_request_pool = kcalloc(ctrl_info->max_io_slots,
5129 sizeof(ctrl_info->io_request_pool[0]), GFP_KERNEL);
5130
5131 if (!ctrl_info->io_request_pool) {
5132 dev_err(&ctrl_info->pci_dev->dev,
5133 "failed to allocate I/O request pool\n");
5134 goto error;
5135 }
5136
5137 dev = &ctrl_info->pci_dev->dev;
5138 sg_chain_buffer_length = ctrl_info->sg_chain_buffer_length;
5139 io_request = ctrl_info->io_request_pool;
5140
5141 for (i = 0; i < ctrl_info->max_io_slots; i++) {
5142 io_request->iu = kmalloc(ctrl_info->max_inbound_iu_length, GFP_KERNEL);
5143
5144 if (!io_request->iu) {
5145 dev_err(&ctrl_info->pci_dev->dev,
5146 "failed to allocate IU buffers\n");
5147 goto error;
5148 }
5149
5150 sg_chain_buffer = dma_alloc_coherent(dev,
5151 sg_chain_buffer_length, &sg_chain_buffer_dma_handle,
5152 GFP_KERNEL);
5153
5154 if (!sg_chain_buffer) {
5155 dev_err(&ctrl_info->pci_dev->dev,
5156 "failed to allocate PQI scatter-gather chain buffers\n");
5157 goto error;
5158 }
5159
5160 io_request->index = i;
5161 io_request->sg_chain_buffer = sg_chain_buffer;
5162 io_request->sg_chain_buffer_dma_handle = sg_chain_buffer_dma_handle;
5163 io_request++;
5164 }
5165
5166 return 0;
5167
5168 error:
5169 pqi_free_all_io_requests(ctrl_info);
5170
5171 return -ENOMEM;
5172 }
5173
5174 /*
5175 * Calculate required resources that are sized based on max. outstanding
5176 * requests and max. transfer size.
5177 */
5178
pqi_calculate_io_resources(struct pqi_ctrl_info * ctrl_info)5179 static void pqi_calculate_io_resources(struct pqi_ctrl_info *ctrl_info)
5180 {
5181 u32 max_transfer_size;
5182 u32 max_sg_entries;
5183
5184 ctrl_info->scsi_ml_can_queue =
5185 ctrl_info->max_outstanding_requests - PQI_RESERVED_IO_SLOTS;
5186 ctrl_info->max_io_slots = ctrl_info->max_outstanding_requests;
5187
5188 ctrl_info->error_buffer_length =
5189 ctrl_info->max_io_slots * PQI_ERROR_BUFFER_ELEMENT_LENGTH;
5190
5191 if (reset_devices)
5192 max_transfer_size = min(ctrl_info->max_transfer_size,
5193 PQI_MAX_TRANSFER_SIZE_KDUMP);
5194 else
5195 max_transfer_size = min(ctrl_info->max_transfer_size,
5196 PQI_MAX_TRANSFER_SIZE);
5197
5198 max_sg_entries = max_transfer_size / PAGE_SIZE;
5199
5200 /* +1 to cover when the buffer is not page-aligned. */
5201 max_sg_entries++;
5202
5203 max_sg_entries = min(ctrl_info->max_sg_entries, max_sg_entries);
5204
5205 max_transfer_size = (max_sg_entries - 1) * PAGE_SIZE;
5206
5207 ctrl_info->sg_chain_buffer_length =
5208 (max_sg_entries * sizeof(struct pqi_sg_descriptor)) +
5209 PQI_EXTRA_SGL_MEMORY;
5210 ctrl_info->sg_tablesize = max_sg_entries;
5211 ctrl_info->max_sectors = max_transfer_size / 512;
5212 }
5213
pqi_calculate_queue_resources(struct pqi_ctrl_info * ctrl_info)5214 static void pqi_calculate_queue_resources(struct pqi_ctrl_info *ctrl_info)
5215 {
5216 int num_queue_groups;
5217 u16 num_elements_per_iq;
5218 u16 num_elements_per_oq;
5219
5220 if (reset_devices) {
5221 num_queue_groups = 1;
5222 } else {
5223 int num_cpus;
5224 int max_queue_groups;
5225
5226 max_queue_groups = min(ctrl_info->max_inbound_queues / 2,
5227 ctrl_info->max_outbound_queues - 1);
5228 max_queue_groups = min(max_queue_groups, PQI_MAX_QUEUE_GROUPS);
5229
5230 num_cpus = num_online_cpus();
5231 num_queue_groups = min(num_cpus, ctrl_info->max_msix_vectors);
5232 num_queue_groups = min(num_queue_groups, max_queue_groups);
5233 }
5234
5235 ctrl_info->num_queue_groups = num_queue_groups;
5236 ctrl_info->max_hw_queue_index = num_queue_groups - 1;
5237
5238 /*
5239 * Make sure that the max. inbound IU length is an even multiple
5240 * of our inbound element length.
5241 */
5242 ctrl_info->max_inbound_iu_length =
5243 (ctrl_info->max_inbound_iu_length_per_firmware /
5244 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) *
5245 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH;
5246
5247 num_elements_per_iq =
5248 (ctrl_info->max_inbound_iu_length /
5249 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
5250
5251 /* Add one because one element in each queue is unusable. */
5252 num_elements_per_iq++;
5253
5254 num_elements_per_iq = min(num_elements_per_iq,
5255 ctrl_info->max_elements_per_iq);
5256
5257 num_elements_per_oq = ((num_elements_per_iq - 1) * 2) + 1;
5258 num_elements_per_oq = min(num_elements_per_oq,
5259 ctrl_info->max_elements_per_oq);
5260
5261 ctrl_info->num_elements_per_iq = num_elements_per_iq;
5262 ctrl_info->num_elements_per_oq = num_elements_per_oq;
5263
5264 ctrl_info->max_sg_per_iu =
5265 ((ctrl_info->max_inbound_iu_length -
5266 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) /
5267 sizeof(struct pqi_sg_descriptor)) +
5268 PQI_MAX_EMBEDDED_SG_DESCRIPTORS;
5269
5270 ctrl_info->max_sg_per_r56_iu =
5271 ((ctrl_info->max_inbound_iu_length -
5272 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) /
5273 sizeof(struct pqi_sg_descriptor)) +
5274 PQI_MAX_EMBEDDED_R56_SG_DESCRIPTORS;
5275 }
5276
pqi_set_sg_descriptor(struct pqi_sg_descriptor * sg_descriptor,struct scatterlist * sg)5277 static inline void pqi_set_sg_descriptor(struct pqi_sg_descriptor *sg_descriptor,
5278 struct scatterlist *sg)
5279 {
5280 u64 address = (u64)sg_dma_address(sg);
5281 unsigned int length = sg_dma_len(sg);
5282
5283 put_unaligned_le64(address, &sg_descriptor->address);
5284 put_unaligned_le32(length, &sg_descriptor->length);
5285 put_unaligned_le32(0, &sg_descriptor->flags);
5286 }
5287
pqi_build_sg_list(struct pqi_sg_descriptor * sg_descriptor,struct scatterlist * sg,int sg_count,struct pqi_io_request * io_request,int max_sg_per_iu,bool * chained)5288 static unsigned int pqi_build_sg_list(struct pqi_sg_descriptor *sg_descriptor,
5289 struct scatterlist *sg, int sg_count, struct pqi_io_request *io_request,
5290 int max_sg_per_iu, bool *chained)
5291 {
5292 int i;
5293 unsigned int num_sg_in_iu;
5294
5295 *chained = false;
5296 i = 0;
5297 num_sg_in_iu = 0;
5298 max_sg_per_iu--; /* Subtract 1 to leave room for chain marker. */
5299
5300 while (1) {
5301 pqi_set_sg_descriptor(sg_descriptor, sg);
5302 if (!*chained)
5303 num_sg_in_iu++;
5304 i++;
5305 if (i == sg_count)
5306 break;
5307 sg_descriptor++;
5308 if (i == max_sg_per_iu) {
5309 put_unaligned_le64((u64)io_request->sg_chain_buffer_dma_handle,
5310 &sg_descriptor->address);
5311 put_unaligned_le32((sg_count - num_sg_in_iu) * sizeof(*sg_descriptor),
5312 &sg_descriptor->length);
5313 put_unaligned_le32(CISS_SG_CHAIN, &sg_descriptor->flags);
5314 *chained = true;
5315 num_sg_in_iu++;
5316 sg_descriptor = io_request->sg_chain_buffer;
5317 }
5318 sg = sg_next(sg);
5319 }
5320
5321 put_unaligned_le32(CISS_SG_LAST, &sg_descriptor->flags);
5322
5323 return num_sg_in_iu;
5324 }
5325
pqi_build_raid_sg_list(struct pqi_ctrl_info * ctrl_info,struct pqi_raid_path_request * request,struct scsi_cmnd * scmd,struct pqi_io_request * io_request)5326 static int pqi_build_raid_sg_list(struct pqi_ctrl_info *ctrl_info,
5327 struct pqi_raid_path_request *request, struct scsi_cmnd *scmd,
5328 struct pqi_io_request *io_request)
5329 {
5330 u16 iu_length;
5331 int sg_count;
5332 bool chained;
5333 unsigned int num_sg_in_iu;
5334 struct scatterlist *sg;
5335 struct pqi_sg_descriptor *sg_descriptor;
5336
5337 sg_count = scsi_dma_map(scmd);
5338 if (sg_count < 0)
5339 return sg_count;
5340
5341 iu_length = offsetof(struct pqi_raid_path_request, sg_descriptors) -
5342 PQI_REQUEST_HEADER_LENGTH;
5343
5344 if (sg_count == 0)
5345 goto out;
5346
5347 sg = scsi_sglist(scmd);
5348 sg_descriptor = request->sg_descriptors;
5349
5350 num_sg_in_iu = pqi_build_sg_list(sg_descriptor, sg, sg_count, io_request,
5351 ctrl_info->max_sg_per_iu, &chained);
5352
5353 request->partial = chained;
5354 iu_length += num_sg_in_iu * sizeof(*sg_descriptor);
5355
5356 out:
5357 put_unaligned_le16(iu_length, &request->header.iu_length);
5358
5359 return 0;
5360 }
5361
pqi_build_aio_r1_sg_list(struct pqi_ctrl_info * ctrl_info,struct pqi_aio_r1_path_request * request,struct scsi_cmnd * scmd,struct pqi_io_request * io_request)5362 static int pqi_build_aio_r1_sg_list(struct pqi_ctrl_info *ctrl_info,
5363 struct pqi_aio_r1_path_request *request, struct scsi_cmnd *scmd,
5364 struct pqi_io_request *io_request)
5365 {
5366 u16 iu_length;
5367 int sg_count;
5368 bool chained;
5369 unsigned int num_sg_in_iu;
5370 struct scatterlist *sg;
5371 struct pqi_sg_descriptor *sg_descriptor;
5372
5373 sg_count = scsi_dma_map(scmd);
5374 if (sg_count < 0)
5375 return sg_count;
5376
5377 iu_length = offsetof(struct pqi_aio_r1_path_request, sg_descriptors) -
5378 PQI_REQUEST_HEADER_LENGTH;
5379 num_sg_in_iu = 0;
5380
5381 if (sg_count == 0)
5382 goto out;
5383
5384 sg = scsi_sglist(scmd);
5385 sg_descriptor = request->sg_descriptors;
5386
5387 num_sg_in_iu = pqi_build_sg_list(sg_descriptor, sg, sg_count, io_request,
5388 ctrl_info->max_sg_per_iu, &chained);
5389
5390 request->partial = chained;
5391 iu_length += num_sg_in_iu * sizeof(*sg_descriptor);
5392
5393 out:
5394 put_unaligned_le16(iu_length, &request->header.iu_length);
5395 request->num_sg_descriptors = num_sg_in_iu;
5396
5397 return 0;
5398 }
5399
pqi_build_aio_r56_sg_list(struct pqi_ctrl_info * ctrl_info,struct pqi_aio_r56_path_request * request,struct scsi_cmnd * scmd,struct pqi_io_request * io_request)5400 static int pqi_build_aio_r56_sg_list(struct pqi_ctrl_info *ctrl_info,
5401 struct pqi_aio_r56_path_request *request, struct scsi_cmnd *scmd,
5402 struct pqi_io_request *io_request)
5403 {
5404 u16 iu_length;
5405 int sg_count;
5406 bool chained;
5407 unsigned int num_sg_in_iu;
5408 struct scatterlist *sg;
5409 struct pqi_sg_descriptor *sg_descriptor;
5410
5411 sg_count = scsi_dma_map(scmd);
5412 if (sg_count < 0)
5413 return sg_count;
5414
5415 iu_length = offsetof(struct pqi_aio_r56_path_request, sg_descriptors) -
5416 PQI_REQUEST_HEADER_LENGTH;
5417 num_sg_in_iu = 0;
5418
5419 if (sg_count != 0) {
5420 sg = scsi_sglist(scmd);
5421 sg_descriptor = request->sg_descriptors;
5422
5423 num_sg_in_iu = pqi_build_sg_list(sg_descriptor, sg, sg_count, io_request,
5424 ctrl_info->max_sg_per_r56_iu, &chained);
5425
5426 request->partial = chained;
5427 iu_length += num_sg_in_iu * sizeof(*sg_descriptor);
5428 }
5429
5430 put_unaligned_le16(iu_length, &request->header.iu_length);
5431 request->num_sg_descriptors = num_sg_in_iu;
5432
5433 return 0;
5434 }
5435
pqi_build_aio_sg_list(struct pqi_ctrl_info * ctrl_info,struct pqi_aio_path_request * request,struct scsi_cmnd * scmd,struct pqi_io_request * io_request)5436 static int pqi_build_aio_sg_list(struct pqi_ctrl_info *ctrl_info,
5437 struct pqi_aio_path_request *request, struct scsi_cmnd *scmd,
5438 struct pqi_io_request *io_request)
5439 {
5440 u16 iu_length;
5441 int sg_count;
5442 bool chained;
5443 unsigned int num_sg_in_iu;
5444 struct scatterlist *sg;
5445 struct pqi_sg_descriptor *sg_descriptor;
5446
5447 sg_count = scsi_dma_map(scmd);
5448 if (sg_count < 0)
5449 return sg_count;
5450
5451 iu_length = offsetof(struct pqi_aio_path_request, sg_descriptors) -
5452 PQI_REQUEST_HEADER_LENGTH;
5453 num_sg_in_iu = 0;
5454
5455 if (sg_count == 0)
5456 goto out;
5457
5458 sg = scsi_sglist(scmd);
5459 sg_descriptor = request->sg_descriptors;
5460
5461 num_sg_in_iu = pqi_build_sg_list(sg_descriptor, sg, sg_count, io_request,
5462 ctrl_info->max_sg_per_iu, &chained);
5463
5464 request->partial = chained;
5465 iu_length += num_sg_in_iu * sizeof(*sg_descriptor);
5466
5467 out:
5468 put_unaligned_le16(iu_length, &request->header.iu_length);
5469 request->num_sg_descriptors = num_sg_in_iu;
5470
5471 return 0;
5472 }
5473
pqi_raid_io_complete(struct pqi_io_request * io_request,void * context)5474 static void pqi_raid_io_complete(struct pqi_io_request *io_request,
5475 void *context)
5476 {
5477 struct scsi_cmnd *scmd;
5478
5479 scmd = io_request->scmd;
5480 pqi_free_io_request(io_request);
5481 scsi_dma_unmap(scmd);
5482 pqi_scsi_done(scmd);
5483 }
5484
pqi_raid_submit_scsi_cmd_with_io_request(struct pqi_ctrl_info * ctrl_info,struct pqi_io_request * io_request,struct pqi_scsi_dev * device,struct scsi_cmnd * scmd,struct pqi_queue_group * queue_group)5485 static int pqi_raid_submit_scsi_cmd_with_io_request(
5486 struct pqi_ctrl_info *ctrl_info, struct pqi_io_request *io_request,
5487 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
5488 struct pqi_queue_group *queue_group)
5489 {
5490 int rc;
5491 size_t cdb_length;
5492 struct pqi_raid_path_request *request;
5493
5494 io_request->io_complete_callback = pqi_raid_io_complete;
5495 io_request->scmd = scmd;
5496
5497 request = io_request->iu;
5498 memset(request, 0, offsetof(struct pqi_raid_path_request, sg_descriptors));
5499
5500 request->header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO;
5501 put_unaligned_le32(scsi_bufflen(scmd), &request->buffer_length);
5502 request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
5503 put_unaligned_le16(io_request->index, &request->request_id);
5504 request->error_index = request->request_id;
5505 memcpy(request->lun_number, device->scsi3addr, sizeof(request->lun_number));
5506 request->ml_device_lun_number = (u8)scmd->device->lun;
5507
5508 cdb_length = min_t(size_t, scmd->cmd_len, sizeof(request->cdb));
5509 memcpy(request->cdb, scmd->cmnd, cdb_length);
5510
5511 switch (cdb_length) {
5512 case 6:
5513 case 10:
5514 case 12:
5515 case 16:
5516 request->additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_0;
5517 break;
5518 case 20:
5519 request->additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_4;
5520 break;
5521 case 24:
5522 request->additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_8;
5523 break;
5524 case 28:
5525 request->additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_12;
5526 break;
5527 case 32:
5528 default:
5529 request->additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_16;
5530 break;
5531 }
5532
5533 switch (scmd->sc_data_direction) {
5534 case DMA_FROM_DEVICE:
5535 request->data_direction = SOP_READ_FLAG;
5536 break;
5537 case DMA_TO_DEVICE:
5538 request->data_direction = SOP_WRITE_FLAG;
5539 break;
5540 case DMA_NONE:
5541 request->data_direction = SOP_NO_DIRECTION_FLAG;
5542 break;
5543 case DMA_BIDIRECTIONAL:
5544 request->data_direction = SOP_BIDIRECTIONAL;
5545 break;
5546 default:
5547 dev_err(&ctrl_info->pci_dev->dev,
5548 "unknown data direction: %d\n",
5549 scmd->sc_data_direction);
5550 break;
5551 }
5552
5553 rc = pqi_build_raid_sg_list(ctrl_info, request, scmd, io_request);
5554 if (rc) {
5555 pqi_free_io_request(io_request);
5556 return SCSI_MLQUEUE_HOST_BUSY;
5557 }
5558
5559 pqi_start_io(ctrl_info, queue_group, RAID_PATH, io_request);
5560
5561 return 0;
5562 }
5563
pqi_raid_submit_scsi_cmd(struct pqi_ctrl_info * ctrl_info,struct pqi_scsi_dev * device,struct scsi_cmnd * scmd,struct pqi_queue_group * queue_group)5564 static inline int pqi_raid_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info,
5565 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
5566 struct pqi_queue_group *queue_group)
5567 {
5568 struct pqi_io_request *io_request;
5569
5570 io_request = pqi_alloc_io_request(ctrl_info);
5571
5572 return pqi_raid_submit_scsi_cmd_with_io_request(ctrl_info, io_request,
5573 device, scmd, queue_group);
5574 }
5575
pqi_raid_bypass_retry_needed(struct pqi_io_request * io_request)5576 static bool pqi_raid_bypass_retry_needed(struct pqi_io_request *io_request)
5577 {
5578 struct scsi_cmnd *scmd;
5579 struct pqi_scsi_dev *device;
5580 struct pqi_ctrl_info *ctrl_info;
5581
5582 if (!io_request->raid_bypass)
5583 return false;
5584
5585 scmd = io_request->scmd;
5586 if ((scmd->result & 0xff) == SAM_STAT_GOOD)
5587 return false;
5588 if (host_byte(scmd->result) == DID_NO_CONNECT)
5589 return false;
5590
5591 device = scmd->device->hostdata;
5592 if (pqi_device_offline(device) || pqi_device_in_remove(device))
5593 return false;
5594
5595 ctrl_info = shost_to_hba(scmd->device->host);
5596 if (pqi_ctrl_offline(ctrl_info))
5597 return false;
5598
5599 return true;
5600 }
5601
pqi_aio_io_complete(struct pqi_io_request * io_request,void * context)5602 static void pqi_aio_io_complete(struct pqi_io_request *io_request,
5603 void *context)
5604 {
5605 struct scsi_cmnd *scmd;
5606
5607 scmd = io_request->scmd;
5608 scsi_dma_unmap(scmd);
5609 if (io_request->status == -EAGAIN || pqi_raid_bypass_retry_needed(io_request)) {
5610 set_host_byte(scmd, DID_IMM_RETRY);
5611 pqi_cmd_priv(scmd)->this_residual++;
5612 }
5613
5614 pqi_free_io_request(io_request);
5615 pqi_scsi_done(scmd);
5616 }
5617
pqi_is_io_high_priority(struct pqi_ctrl_info * ctrl_info,struct pqi_scsi_dev * device,struct scsi_cmnd * scmd)5618 static inline bool pqi_is_io_high_priority(struct pqi_ctrl_info *ctrl_info,
5619 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd)
5620 {
5621 bool io_high_prio;
5622 int priority_class;
5623
5624 io_high_prio = false;
5625
5626 if (device->ncq_prio_enable) {
5627 priority_class =
5628 IOPRIO_PRIO_CLASS(req_get_ioprio(scsi_cmd_to_rq(scmd)));
5629 if (priority_class == IOPRIO_CLASS_RT) {
5630 /* Set NCQ priority for read/write commands. */
5631 switch (scmd->cmnd[0]) {
5632 case WRITE_16:
5633 case READ_16:
5634 case WRITE_12:
5635 case READ_12:
5636 case WRITE_10:
5637 case READ_10:
5638 case WRITE_6:
5639 case READ_6:
5640 io_high_prio = true;
5641 break;
5642 }
5643 }
5644 }
5645
5646 return io_high_prio;
5647 }
5648
pqi_aio_submit_scsi_cmd(struct pqi_ctrl_info * ctrl_info,struct pqi_scsi_dev * device,struct scsi_cmnd * scmd,struct pqi_queue_group * queue_group)5649 static inline int pqi_aio_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info,
5650 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
5651 struct pqi_queue_group *queue_group)
5652 {
5653 bool io_high_prio;
5654
5655 io_high_prio = pqi_is_io_high_priority(ctrl_info, device, scmd);
5656
5657 return pqi_aio_submit_io(ctrl_info, scmd, device->aio_handle,
5658 scmd->cmnd, scmd->cmd_len, queue_group, NULL,
5659 false, io_high_prio);
5660 }
5661
pqi_aio_submit_io(struct pqi_ctrl_info * ctrl_info,struct scsi_cmnd * scmd,u32 aio_handle,u8 * cdb,unsigned int cdb_length,struct pqi_queue_group * queue_group,struct pqi_encryption_info * encryption_info,bool raid_bypass,bool io_high_prio)5662 static int pqi_aio_submit_io(struct pqi_ctrl_info *ctrl_info,
5663 struct scsi_cmnd *scmd, u32 aio_handle, u8 *cdb,
5664 unsigned int cdb_length, struct pqi_queue_group *queue_group,
5665 struct pqi_encryption_info *encryption_info, bool raid_bypass,
5666 bool io_high_prio)
5667 {
5668 int rc;
5669 struct pqi_io_request *io_request;
5670 struct pqi_aio_path_request *request;
5671 struct pqi_scsi_dev *device;
5672
5673 device = scmd->device->hostdata;
5674 io_request = pqi_alloc_io_request(ctrl_info);
5675 io_request->io_complete_callback = pqi_aio_io_complete;
5676 io_request->scmd = scmd;
5677 io_request->raid_bypass = raid_bypass;
5678
5679 request = io_request->iu;
5680 memset(request, 0, offsetof(struct pqi_aio_path_request, sg_descriptors));
5681
5682 request->header.iu_type = PQI_REQUEST_IU_AIO_PATH_IO;
5683 put_unaligned_le32(aio_handle, &request->nexus_id);
5684 put_unaligned_le32(scsi_bufflen(scmd), &request->buffer_length);
5685 request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
5686 request->command_priority = io_high_prio;
5687 put_unaligned_le16(io_request->index, &request->request_id);
5688 request->error_index = request->request_id;
5689 if (!pqi_is_logical_device(device) && ctrl_info->multi_lun_device_supported)
5690 put_unaligned_le64(((scmd->device->lun) << 8), &request->lun_number);
5691 if (cdb_length > sizeof(request->cdb))
5692 cdb_length = sizeof(request->cdb);
5693 request->cdb_length = cdb_length;
5694 memcpy(request->cdb, cdb, cdb_length);
5695
5696 switch (scmd->sc_data_direction) {
5697 case DMA_TO_DEVICE:
5698 request->data_direction = SOP_READ_FLAG;
5699 break;
5700 case DMA_FROM_DEVICE:
5701 request->data_direction = SOP_WRITE_FLAG;
5702 break;
5703 case DMA_NONE:
5704 request->data_direction = SOP_NO_DIRECTION_FLAG;
5705 break;
5706 case DMA_BIDIRECTIONAL:
5707 request->data_direction = SOP_BIDIRECTIONAL;
5708 break;
5709 default:
5710 dev_err(&ctrl_info->pci_dev->dev,
5711 "unknown data direction: %d\n",
5712 scmd->sc_data_direction);
5713 break;
5714 }
5715
5716 if (encryption_info) {
5717 request->encryption_enable = true;
5718 put_unaligned_le16(encryption_info->data_encryption_key_index,
5719 &request->data_encryption_key_index);
5720 put_unaligned_le32(encryption_info->encrypt_tweak_lower,
5721 &request->encrypt_tweak_lower);
5722 put_unaligned_le32(encryption_info->encrypt_tweak_upper,
5723 &request->encrypt_tweak_upper);
5724 }
5725
5726 rc = pqi_build_aio_sg_list(ctrl_info, request, scmd, io_request);
5727 if (rc) {
5728 pqi_free_io_request(io_request);
5729 return SCSI_MLQUEUE_HOST_BUSY;
5730 }
5731
5732 pqi_start_io(ctrl_info, queue_group, AIO_PATH, io_request);
5733
5734 return 0;
5735 }
5736
pqi_aio_submit_r1_write_io(struct pqi_ctrl_info * ctrl_info,struct scsi_cmnd * scmd,struct pqi_queue_group * queue_group,struct pqi_encryption_info * encryption_info,struct pqi_scsi_dev * device,struct pqi_scsi_dev_raid_map_data * rmd)5737 static int pqi_aio_submit_r1_write_io(struct pqi_ctrl_info *ctrl_info,
5738 struct scsi_cmnd *scmd, struct pqi_queue_group *queue_group,
5739 struct pqi_encryption_info *encryption_info, struct pqi_scsi_dev *device,
5740 struct pqi_scsi_dev_raid_map_data *rmd)
5741 {
5742 int rc;
5743 struct pqi_io_request *io_request;
5744 struct pqi_aio_r1_path_request *r1_request;
5745
5746 io_request = pqi_alloc_io_request(ctrl_info);
5747 io_request->io_complete_callback = pqi_aio_io_complete;
5748 io_request->scmd = scmd;
5749 io_request->raid_bypass = true;
5750
5751 r1_request = io_request->iu;
5752 memset(r1_request, 0, offsetof(struct pqi_aio_r1_path_request, sg_descriptors));
5753
5754 r1_request->header.iu_type = PQI_REQUEST_IU_AIO_PATH_RAID1_IO;
5755 put_unaligned_le16(*(u16 *)device->scsi3addr & 0x3fff, &r1_request->volume_id);
5756 r1_request->num_drives = rmd->num_it_nexus_entries;
5757 put_unaligned_le32(rmd->it_nexus[0], &r1_request->it_nexus_1);
5758 put_unaligned_le32(rmd->it_nexus[1], &r1_request->it_nexus_2);
5759 if (rmd->num_it_nexus_entries == 3)
5760 put_unaligned_le32(rmd->it_nexus[2], &r1_request->it_nexus_3);
5761
5762 put_unaligned_le32(scsi_bufflen(scmd), &r1_request->data_length);
5763 r1_request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
5764 put_unaligned_le16(io_request->index, &r1_request->request_id);
5765 r1_request->error_index = r1_request->request_id;
5766 if (rmd->cdb_length > sizeof(r1_request->cdb))
5767 rmd->cdb_length = sizeof(r1_request->cdb);
5768 r1_request->cdb_length = rmd->cdb_length;
5769 memcpy(r1_request->cdb, rmd->cdb, rmd->cdb_length);
5770
5771 /* The direction is always write. */
5772 r1_request->data_direction = SOP_READ_FLAG;
5773
5774 if (encryption_info) {
5775 r1_request->encryption_enable = true;
5776 put_unaligned_le16(encryption_info->data_encryption_key_index,
5777 &r1_request->data_encryption_key_index);
5778 put_unaligned_le32(encryption_info->encrypt_tweak_lower,
5779 &r1_request->encrypt_tweak_lower);
5780 put_unaligned_le32(encryption_info->encrypt_tweak_upper,
5781 &r1_request->encrypt_tweak_upper);
5782 }
5783
5784 rc = pqi_build_aio_r1_sg_list(ctrl_info, r1_request, scmd, io_request);
5785 if (rc) {
5786 pqi_free_io_request(io_request);
5787 return SCSI_MLQUEUE_HOST_BUSY;
5788 }
5789
5790 pqi_start_io(ctrl_info, queue_group, AIO_PATH, io_request);
5791
5792 return 0;
5793 }
5794
pqi_aio_submit_r56_write_io(struct pqi_ctrl_info * ctrl_info,struct scsi_cmnd * scmd,struct pqi_queue_group * queue_group,struct pqi_encryption_info * encryption_info,struct pqi_scsi_dev * device,struct pqi_scsi_dev_raid_map_data * rmd)5795 static int pqi_aio_submit_r56_write_io(struct pqi_ctrl_info *ctrl_info,
5796 struct scsi_cmnd *scmd, struct pqi_queue_group *queue_group,
5797 struct pqi_encryption_info *encryption_info, struct pqi_scsi_dev *device,
5798 struct pqi_scsi_dev_raid_map_data *rmd)
5799 {
5800 int rc;
5801 struct pqi_io_request *io_request;
5802 struct pqi_aio_r56_path_request *r56_request;
5803
5804 io_request = pqi_alloc_io_request(ctrl_info);
5805 io_request->io_complete_callback = pqi_aio_io_complete;
5806 io_request->scmd = scmd;
5807 io_request->raid_bypass = true;
5808
5809 r56_request = io_request->iu;
5810 memset(r56_request, 0, offsetof(struct pqi_aio_r56_path_request, sg_descriptors));
5811
5812 if (device->raid_level == SA_RAID_5 || device->raid_level == SA_RAID_51)
5813 r56_request->header.iu_type = PQI_REQUEST_IU_AIO_PATH_RAID5_IO;
5814 else
5815 r56_request->header.iu_type = PQI_REQUEST_IU_AIO_PATH_RAID6_IO;
5816
5817 put_unaligned_le16(*(u16 *)device->scsi3addr & 0x3fff, &r56_request->volume_id);
5818 put_unaligned_le32(rmd->aio_handle, &r56_request->data_it_nexus);
5819 put_unaligned_le32(rmd->p_parity_it_nexus, &r56_request->p_parity_it_nexus);
5820 if (rmd->raid_level == SA_RAID_6) {
5821 put_unaligned_le32(rmd->q_parity_it_nexus, &r56_request->q_parity_it_nexus);
5822 r56_request->xor_multiplier = rmd->xor_mult;
5823 }
5824 put_unaligned_le32(scsi_bufflen(scmd), &r56_request->data_length);
5825 r56_request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
5826 put_unaligned_le64(rmd->row, &r56_request->row);
5827
5828 put_unaligned_le16(io_request->index, &r56_request->request_id);
5829 r56_request->error_index = r56_request->request_id;
5830
5831 if (rmd->cdb_length > sizeof(r56_request->cdb))
5832 rmd->cdb_length = sizeof(r56_request->cdb);
5833 r56_request->cdb_length = rmd->cdb_length;
5834 memcpy(r56_request->cdb, rmd->cdb, rmd->cdb_length);
5835
5836 /* The direction is always write. */
5837 r56_request->data_direction = SOP_READ_FLAG;
5838
5839 if (encryption_info) {
5840 r56_request->encryption_enable = true;
5841 put_unaligned_le16(encryption_info->data_encryption_key_index,
5842 &r56_request->data_encryption_key_index);
5843 put_unaligned_le32(encryption_info->encrypt_tweak_lower,
5844 &r56_request->encrypt_tweak_lower);
5845 put_unaligned_le32(encryption_info->encrypt_tweak_upper,
5846 &r56_request->encrypt_tweak_upper);
5847 }
5848
5849 rc = pqi_build_aio_r56_sg_list(ctrl_info, r56_request, scmd, io_request);
5850 if (rc) {
5851 pqi_free_io_request(io_request);
5852 return SCSI_MLQUEUE_HOST_BUSY;
5853 }
5854
5855 pqi_start_io(ctrl_info, queue_group, AIO_PATH, io_request);
5856
5857 return 0;
5858 }
5859
pqi_get_hw_queue(struct pqi_ctrl_info * ctrl_info,struct scsi_cmnd * scmd)5860 static inline u16 pqi_get_hw_queue(struct pqi_ctrl_info *ctrl_info,
5861 struct scsi_cmnd *scmd)
5862 {
5863 u16 hw_queue;
5864
5865 hw_queue = blk_mq_unique_tag_to_hwq(blk_mq_unique_tag(scsi_cmd_to_rq(scmd)));
5866 if (hw_queue > ctrl_info->max_hw_queue_index)
5867 hw_queue = 0;
5868
5869 return hw_queue;
5870 }
5871
pqi_is_bypass_eligible_request(struct scsi_cmnd * scmd)5872 static inline bool pqi_is_bypass_eligible_request(struct scsi_cmnd *scmd)
5873 {
5874 if (blk_rq_is_passthrough(scsi_cmd_to_rq(scmd)))
5875 return false;
5876
5877 return pqi_cmd_priv(scmd)->this_residual == 0;
5878 }
5879
5880 /*
5881 * This function gets called just before we hand the completed SCSI request
5882 * back to the SML.
5883 */
5884
pqi_prep_for_scsi_done(struct scsi_cmnd * scmd)5885 void pqi_prep_for_scsi_done(struct scsi_cmnd *scmd)
5886 {
5887 struct pqi_scsi_dev *device;
5888
5889 if (!scmd->device) {
5890 set_host_byte(scmd, DID_NO_CONNECT);
5891 return;
5892 }
5893
5894 device = scmd->device->hostdata;
5895 if (!device) {
5896 set_host_byte(scmd, DID_NO_CONNECT);
5897 return;
5898 }
5899
5900 atomic_dec(&device->scsi_cmds_outstanding[scmd->device->lun]);
5901 }
5902
pqi_is_parity_write_stream(struct pqi_ctrl_info * ctrl_info,struct scsi_cmnd * scmd)5903 static bool pqi_is_parity_write_stream(struct pqi_ctrl_info *ctrl_info,
5904 struct scsi_cmnd *scmd)
5905 {
5906 u32 oldest_jiffies;
5907 u8 lru_index;
5908 int i;
5909 int rc;
5910 struct pqi_scsi_dev *device;
5911 struct pqi_stream_data *pqi_stream_data;
5912 struct pqi_scsi_dev_raid_map_data rmd;
5913
5914 if (!ctrl_info->enable_stream_detection)
5915 return false;
5916
5917 rc = pqi_get_aio_lba_and_block_count(scmd, &rmd);
5918 if (rc)
5919 return false;
5920
5921 /* Check writes only. */
5922 if (!rmd.is_write)
5923 return false;
5924
5925 device = scmd->device->hostdata;
5926
5927 /* Check for RAID 5/6 streams. */
5928 if (device->raid_level != SA_RAID_5 && device->raid_level != SA_RAID_6)
5929 return false;
5930
5931 /*
5932 * If controller does not support AIO RAID{5,6} writes, need to send
5933 * requests down non-AIO path.
5934 */
5935 if ((device->raid_level == SA_RAID_5 && !ctrl_info->enable_r5_writes) ||
5936 (device->raid_level == SA_RAID_6 && !ctrl_info->enable_r6_writes))
5937 return true;
5938
5939 lru_index = 0;
5940 oldest_jiffies = INT_MAX;
5941 for (i = 0; i < NUM_STREAMS_PER_LUN; i++) {
5942 pqi_stream_data = &device->stream_data[i];
5943 /*
5944 * Check for adjacent request or request is within
5945 * the previous request.
5946 */
5947 if ((pqi_stream_data->next_lba &&
5948 rmd.first_block >= pqi_stream_data->next_lba) &&
5949 rmd.first_block <= pqi_stream_data->next_lba +
5950 rmd.block_cnt) {
5951 pqi_stream_data->next_lba = rmd.first_block +
5952 rmd.block_cnt;
5953 pqi_stream_data->last_accessed = jiffies;
5954 return true;
5955 }
5956
5957 /* unused entry */
5958 if (pqi_stream_data->last_accessed == 0) {
5959 lru_index = i;
5960 break;
5961 }
5962
5963 /* Find entry with oldest last accessed time. */
5964 if (pqi_stream_data->last_accessed <= oldest_jiffies) {
5965 oldest_jiffies = pqi_stream_data->last_accessed;
5966 lru_index = i;
5967 }
5968 }
5969
5970 /* Set LRU entry. */
5971 pqi_stream_data = &device->stream_data[lru_index];
5972 pqi_stream_data->last_accessed = jiffies;
5973 pqi_stream_data->next_lba = rmd.first_block + rmd.block_cnt;
5974
5975 return false;
5976 }
5977
pqi_scsi_queue_command(struct Scsi_Host * shost,struct scsi_cmnd * scmd)5978 static int pqi_scsi_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
5979 {
5980 int rc;
5981 struct pqi_ctrl_info *ctrl_info;
5982 struct pqi_scsi_dev *device;
5983 u16 hw_queue;
5984 struct pqi_queue_group *queue_group;
5985 bool raid_bypassed;
5986
5987 device = scmd->device->hostdata;
5988
5989 if (!device) {
5990 set_host_byte(scmd, DID_NO_CONNECT);
5991 pqi_scsi_done(scmd);
5992 return 0;
5993 }
5994
5995 atomic_inc(&device->scsi_cmds_outstanding[scmd->device->lun]);
5996
5997 ctrl_info = shost_to_hba(shost);
5998
5999 if (pqi_ctrl_offline(ctrl_info) || pqi_device_in_remove(device)) {
6000 set_host_byte(scmd, DID_NO_CONNECT);
6001 pqi_scsi_done(scmd);
6002 return 0;
6003 }
6004
6005 if (pqi_ctrl_blocked(ctrl_info)) {
6006 rc = SCSI_MLQUEUE_HOST_BUSY;
6007 goto out;
6008 }
6009
6010 /*
6011 * This is necessary because the SML doesn't zero out this field during
6012 * error recovery.
6013 */
6014 scmd->result = 0;
6015
6016 hw_queue = pqi_get_hw_queue(ctrl_info, scmd);
6017 queue_group = &ctrl_info->queue_groups[hw_queue];
6018
6019 if (pqi_is_logical_device(device)) {
6020 raid_bypassed = false;
6021 if (device->raid_bypass_enabled &&
6022 pqi_is_bypass_eligible_request(scmd) &&
6023 !pqi_is_parity_write_stream(ctrl_info, scmd)) {
6024 rc = pqi_raid_bypass_submit_scsi_cmd(ctrl_info, device, scmd, queue_group);
6025 if (rc == 0 || rc == SCSI_MLQUEUE_HOST_BUSY) {
6026 raid_bypassed = true;
6027 atomic_inc(&device->raid_bypass_cnt);
6028 }
6029 }
6030 if (!raid_bypassed)
6031 rc = pqi_raid_submit_scsi_cmd(ctrl_info, device, scmd, queue_group);
6032 } else {
6033 if (device->aio_enabled)
6034 rc = pqi_aio_submit_scsi_cmd(ctrl_info, device, scmd, queue_group);
6035 else
6036 rc = pqi_raid_submit_scsi_cmd(ctrl_info, device, scmd, queue_group);
6037 }
6038
6039 out:
6040 if (rc)
6041 atomic_dec(&device->scsi_cmds_outstanding[scmd->device->lun]);
6042
6043 return rc;
6044 }
6045
pqi_queued_io_count(struct pqi_ctrl_info * ctrl_info)6046 static unsigned int pqi_queued_io_count(struct pqi_ctrl_info *ctrl_info)
6047 {
6048 unsigned int i;
6049 unsigned int path;
6050 unsigned long flags;
6051 unsigned int queued_io_count;
6052 struct pqi_queue_group *queue_group;
6053 struct pqi_io_request *io_request;
6054
6055 queued_io_count = 0;
6056
6057 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
6058 queue_group = &ctrl_info->queue_groups[i];
6059 for (path = 0; path < 2; path++) {
6060 spin_lock_irqsave(&queue_group->submit_lock[path], flags);
6061 list_for_each_entry(io_request, &queue_group->request_list[path], request_list_entry)
6062 queued_io_count++;
6063 spin_unlock_irqrestore(&queue_group->submit_lock[path], flags);
6064 }
6065 }
6066
6067 return queued_io_count;
6068 }
6069
pqi_nonempty_inbound_queue_count(struct pqi_ctrl_info * ctrl_info)6070 static unsigned int pqi_nonempty_inbound_queue_count(struct pqi_ctrl_info *ctrl_info)
6071 {
6072 unsigned int i;
6073 unsigned int path;
6074 unsigned int nonempty_inbound_queue_count;
6075 struct pqi_queue_group *queue_group;
6076 pqi_index_t iq_pi;
6077 pqi_index_t iq_ci;
6078
6079 nonempty_inbound_queue_count = 0;
6080
6081 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
6082 queue_group = &ctrl_info->queue_groups[i];
6083 for (path = 0; path < 2; path++) {
6084 iq_pi = queue_group->iq_pi_copy[path];
6085 iq_ci = readl(queue_group->iq_ci[path]);
6086 if (iq_ci != iq_pi)
6087 nonempty_inbound_queue_count++;
6088 }
6089 }
6090
6091 return nonempty_inbound_queue_count;
6092 }
6093
6094 #define PQI_INBOUND_QUEUES_NONEMPTY_WARNING_TIMEOUT_SECS 10
6095
pqi_wait_until_inbound_queues_empty(struct pqi_ctrl_info * ctrl_info)6096 static int pqi_wait_until_inbound_queues_empty(struct pqi_ctrl_info *ctrl_info)
6097 {
6098 unsigned long start_jiffies;
6099 unsigned long warning_timeout;
6100 unsigned int queued_io_count;
6101 unsigned int nonempty_inbound_queue_count;
6102 bool displayed_warning;
6103
6104 displayed_warning = false;
6105 start_jiffies = jiffies;
6106 warning_timeout = (PQI_INBOUND_QUEUES_NONEMPTY_WARNING_TIMEOUT_SECS * HZ) + start_jiffies;
6107
6108 while (1) {
6109 queued_io_count = pqi_queued_io_count(ctrl_info);
6110 nonempty_inbound_queue_count = pqi_nonempty_inbound_queue_count(ctrl_info);
6111 if (queued_io_count == 0 && nonempty_inbound_queue_count == 0)
6112 break;
6113 pqi_check_ctrl_health(ctrl_info);
6114 if (pqi_ctrl_offline(ctrl_info))
6115 return -ENXIO;
6116 if (time_after(jiffies, warning_timeout)) {
6117 dev_warn(&ctrl_info->pci_dev->dev,
6118 "waiting %u seconds for queued I/O to drain (queued I/O count: %u; non-empty inbound queue count: %u)\n",
6119 jiffies_to_msecs(jiffies - start_jiffies) / 1000, queued_io_count, nonempty_inbound_queue_count);
6120 displayed_warning = true;
6121 warning_timeout = (PQI_INBOUND_QUEUES_NONEMPTY_WARNING_TIMEOUT_SECS * HZ) + jiffies;
6122 }
6123 usleep_range(1000, 2000);
6124 }
6125
6126 if (displayed_warning)
6127 dev_warn(&ctrl_info->pci_dev->dev,
6128 "queued I/O drained after waiting for %u seconds\n",
6129 jiffies_to_msecs(jiffies - start_jiffies) / 1000);
6130
6131 return 0;
6132 }
6133
pqi_fail_io_queued_for_device(struct pqi_ctrl_info * ctrl_info,struct pqi_scsi_dev * device)6134 static void pqi_fail_io_queued_for_device(struct pqi_ctrl_info *ctrl_info,
6135 struct pqi_scsi_dev *device)
6136 {
6137 unsigned int i;
6138 unsigned int path;
6139 struct pqi_queue_group *queue_group;
6140 unsigned long flags;
6141 struct pqi_io_request *io_request;
6142 struct pqi_io_request *next;
6143 struct scsi_cmnd *scmd;
6144 struct pqi_scsi_dev *scsi_device;
6145
6146 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
6147 queue_group = &ctrl_info->queue_groups[i];
6148
6149 for (path = 0; path < 2; path++) {
6150 spin_lock_irqsave(
6151 &queue_group->submit_lock[path], flags);
6152
6153 list_for_each_entry_safe(io_request, next,
6154 &queue_group->request_list[path],
6155 request_list_entry) {
6156
6157 scmd = io_request->scmd;
6158 if (!scmd)
6159 continue;
6160
6161 scsi_device = scmd->device->hostdata;
6162 if (scsi_device != device)
6163 continue;
6164
6165 list_del(&io_request->request_list_entry);
6166 set_host_byte(scmd, DID_RESET);
6167 pqi_free_io_request(io_request);
6168 scsi_dma_unmap(scmd);
6169 pqi_scsi_done(scmd);
6170 }
6171
6172 spin_unlock_irqrestore(
6173 &queue_group->submit_lock[path], flags);
6174 }
6175 }
6176 }
6177
6178 #define PQI_PENDING_IO_WARNING_TIMEOUT_SECS 10
6179
pqi_device_wait_for_pending_io(struct pqi_ctrl_info * ctrl_info,struct pqi_scsi_dev * device,u8 lun,unsigned long timeout_msecs)6180 static int pqi_device_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info,
6181 struct pqi_scsi_dev *device, u8 lun, unsigned long timeout_msecs)
6182 {
6183 int cmds_outstanding;
6184 unsigned long start_jiffies;
6185 unsigned long warning_timeout;
6186 unsigned long msecs_waiting;
6187
6188 start_jiffies = jiffies;
6189 warning_timeout = (PQI_PENDING_IO_WARNING_TIMEOUT_SECS * HZ) + start_jiffies;
6190
6191 while ((cmds_outstanding = atomic_read(&device->scsi_cmds_outstanding[lun])) > 0) {
6192 if (ctrl_info->ctrl_removal_state != PQI_CTRL_GRACEFUL_REMOVAL) {
6193 pqi_check_ctrl_health(ctrl_info);
6194 if (pqi_ctrl_offline(ctrl_info))
6195 return -ENXIO;
6196 }
6197 msecs_waiting = jiffies_to_msecs(jiffies - start_jiffies);
6198 if (msecs_waiting >= timeout_msecs) {
6199 dev_err(&ctrl_info->pci_dev->dev,
6200 "scsi %d:%d:%d:%d: timed out after %lu seconds waiting for %d outstanding command(s)\n",
6201 ctrl_info->scsi_host->host_no, device->bus, device->target,
6202 lun, msecs_waiting / 1000, cmds_outstanding);
6203 return -ETIMEDOUT;
6204 }
6205 if (time_after(jiffies, warning_timeout)) {
6206 dev_warn(&ctrl_info->pci_dev->dev,
6207 "scsi %d:%d:%d:%d: waiting %lu seconds for %d outstanding command(s)\n",
6208 ctrl_info->scsi_host->host_no, device->bus, device->target,
6209 lun, msecs_waiting / 1000, cmds_outstanding);
6210 warning_timeout = (PQI_PENDING_IO_WARNING_TIMEOUT_SECS * HZ) + jiffies;
6211 }
6212 usleep_range(1000, 2000);
6213 }
6214
6215 return 0;
6216 }
6217
pqi_lun_reset_complete(struct pqi_io_request * io_request,void * context)6218 static void pqi_lun_reset_complete(struct pqi_io_request *io_request,
6219 void *context)
6220 {
6221 struct completion *waiting = context;
6222
6223 complete(waiting);
6224 }
6225
6226 #define PQI_LUN_RESET_POLL_COMPLETION_SECS 10
6227
pqi_wait_for_lun_reset_completion(struct pqi_ctrl_info * ctrl_info,struct pqi_scsi_dev * device,u8 lun,struct completion * wait)6228 static int pqi_wait_for_lun_reset_completion(struct pqi_ctrl_info *ctrl_info,
6229 struct pqi_scsi_dev *device, u8 lun, struct completion *wait)
6230 {
6231 int rc;
6232 unsigned int wait_secs;
6233 int cmds_outstanding;
6234
6235 wait_secs = 0;
6236
6237 while (1) {
6238 if (wait_for_completion_io_timeout(wait,
6239 PQI_LUN_RESET_POLL_COMPLETION_SECS * HZ)) {
6240 rc = 0;
6241 break;
6242 }
6243
6244 pqi_check_ctrl_health(ctrl_info);
6245 if (pqi_ctrl_offline(ctrl_info)) {
6246 rc = -ENXIO;
6247 break;
6248 }
6249
6250 wait_secs += PQI_LUN_RESET_POLL_COMPLETION_SECS;
6251 cmds_outstanding = atomic_read(&device->scsi_cmds_outstanding[lun]);
6252 dev_warn(&ctrl_info->pci_dev->dev,
6253 "scsi %d:%d:%d:%d: waiting %u seconds for LUN reset to complete (%d command(s) outstanding)\n",
6254 ctrl_info->scsi_host->host_no, device->bus, device->target, lun, wait_secs, cmds_outstanding);
6255 }
6256
6257 return rc;
6258 }
6259
6260 #define PQI_LUN_RESET_FIRMWARE_TIMEOUT_SECS 30
6261
pqi_lun_reset(struct pqi_ctrl_info * ctrl_info,struct scsi_cmnd * scmd)6262 static int pqi_lun_reset(struct pqi_ctrl_info *ctrl_info, struct scsi_cmnd *scmd)
6263 {
6264 int rc;
6265 struct pqi_io_request *io_request;
6266 DECLARE_COMPLETION_ONSTACK(wait);
6267 struct pqi_task_management_request *request;
6268 struct pqi_scsi_dev *device;
6269
6270 device = scmd->device->hostdata;
6271 io_request = pqi_alloc_io_request(ctrl_info);
6272 io_request->io_complete_callback = pqi_lun_reset_complete;
6273 io_request->context = &wait;
6274
6275 request = io_request->iu;
6276 memset(request, 0, sizeof(*request));
6277
6278 request->header.iu_type = PQI_REQUEST_IU_TASK_MANAGEMENT;
6279 put_unaligned_le16(sizeof(*request) - PQI_REQUEST_HEADER_LENGTH,
6280 &request->header.iu_length);
6281 put_unaligned_le16(io_request->index, &request->request_id);
6282 memcpy(request->lun_number, device->scsi3addr,
6283 sizeof(request->lun_number));
6284 if (!pqi_is_logical_device(device) && ctrl_info->multi_lun_device_supported)
6285 request->ml_device_lun_number = (u8)scmd->device->lun;
6286 request->task_management_function = SOP_TASK_MANAGEMENT_LUN_RESET;
6287 if (ctrl_info->tmf_iu_timeout_supported)
6288 put_unaligned_le16(PQI_LUN_RESET_FIRMWARE_TIMEOUT_SECS, &request->timeout);
6289
6290 pqi_start_io(ctrl_info, &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP], RAID_PATH,
6291 io_request);
6292
6293 rc = pqi_wait_for_lun_reset_completion(ctrl_info, device, (u8)scmd->device->lun, &wait);
6294 if (rc == 0)
6295 rc = io_request->status;
6296
6297 pqi_free_io_request(io_request);
6298
6299 return rc;
6300 }
6301
6302 #define PQI_LUN_RESET_RETRIES 3
6303 #define PQI_LUN_RESET_RETRY_INTERVAL_MSECS (10 * 1000)
6304 #define PQI_LUN_RESET_PENDING_IO_TIMEOUT_MSECS (10 * 60 * 1000)
6305 #define PQI_LUN_RESET_FAILED_PENDING_IO_TIMEOUT_MSECS (2 * 60 * 1000)
6306
pqi_lun_reset_with_retries(struct pqi_ctrl_info * ctrl_info,struct scsi_cmnd * scmd)6307 static int pqi_lun_reset_with_retries(struct pqi_ctrl_info *ctrl_info, struct scsi_cmnd *scmd)
6308 {
6309 int reset_rc;
6310 int wait_rc;
6311 unsigned int retries;
6312 unsigned long timeout_msecs;
6313 struct pqi_scsi_dev *device;
6314
6315 device = scmd->device->hostdata;
6316 for (retries = 0;;) {
6317 reset_rc = pqi_lun_reset(ctrl_info, scmd);
6318 if (reset_rc == 0 || reset_rc == -ENODEV || ++retries > PQI_LUN_RESET_RETRIES)
6319 break;
6320 msleep(PQI_LUN_RESET_RETRY_INTERVAL_MSECS);
6321 }
6322
6323 timeout_msecs = reset_rc ? PQI_LUN_RESET_FAILED_PENDING_IO_TIMEOUT_MSECS :
6324 PQI_LUN_RESET_PENDING_IO_TIMEOUT_MSECS;
6325
6326 wait_rc = pqi_device_wait_for_pending_io(ctrl_info, device, scmd->device->lun, timeout_msecs);
6327 if (wait_rc && reset_rc == 0)
6328 reset_rc = wait_rc;
6329
6330 return reset_rc == 0 ? SUCCESS : FAILED;
6331 }
6332
pqi_device_reset(struct pqi_ctrl_info * ctrl_info,struct scsi_cmnd * scmd)6333 static int pqi_device_reset(struct pqi_ctrl_info *ctrl_info, struct scsi_cmnd *scmd)
6334 {
6335 int rc;
6336 struct pqi_scsi_dev *device;
6337
6338 device = scmd->device->hostdata;
6339 pqi_ctrl_block_requests(ctrl_info);
6340 pqi_ctrl_wait_until_quiesced(ctrl_info);
6341 pqi_fail_io_queued_for_device(ctrl_info, device);
6342 rc = pqi_wait_until_inbound_queues_empty(ctrl_info);
6343 if (rc)
6344 rc = FAILED;
6345 else
6346 rc = pqi_lun_reset_with_retries(ctrl_info, scmd);
6347 pqi_ctrl_unblock_requests(ctrl_info);
6348
6349 return rc;
6350 }
6351
pqi_eh_device_reset_handler(struct scsi_cmnd * scmd)6352 static int pqi_eh_device_reset_handler(struct scsi_cmnd *scmd)
6353 {
6354 int rc;
6355 struct Scsi_Host *shost;
6356 struct pqi_ctrl_info *ctrl_info;
6357 struct pqi_scsi_dev *device;
6358
6359 shost = scmd->device->host;
6360 ctrl_info = shost_to_hba(shost);
6361 device = scmd->device->hostdata;
6362
6363 mutex_lock(&ctrl_info->lun_reset_mutex);
6364
6365 dev_err(&ctrl_info->pci_dev->dev,
6366 "resetting scsi %d:%d:%d:%d due to cmd 0x%02x\n",
6367 shost->host_no,
6368 device->bus, device->target, (u32)scmd->device->lun,
6369 scmd->cmd_len > 0 ? scmd->cmnd[0] : 0xff);
6370
6371 pqi_check_ctrl_health(ctrl_info);
6372 if (pqi_ctrl_offline(ctrl_info))
6373 rc = FAILED;
6374 else
6375 rc = pqi_device_reset(ctrl_info, scmd);
6376
6377 dev_err(&ctrl_info->pci_dev->dev,
6378 "reset of scsi %d:%d:%d:%d: %s\n",
6379 shost->host_no, device->bus, device->target, (u32)scmd->device->lun,
6380 rc == SUCCESS ? "SUCCESS" : "FAILED");
6381
6382 mutex_unlock(&ctrl_info->lun_reset_mutex);
6383
6384 return rc;
6385 }
6386
pqi_slave_alloc(struct scsi_device * sdev)6387 static int pqi_slave_alloc(struct scsi_device *sdev)
6388 {
6389 struct pqi_scsi_dev *device;
6390 unsigned long flags;
6391 struct pqi_ctrl_info *ctrl_info;
6392 struct scsi_target *starget;
6393 struct sas_rphy *rphy;
6394
6395 ctrl_info = shost_to_hba(sdev->host);
6396
6397 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
6398
6399 if (sdev_channel(sdev) == PQI_PHYSICAL_DEVICE_BUS) {
6400 starget = scsi_target(sdev);
6401 rphy = target_to_rphy(starget);
6402 device = pqi_find_device_by_sas_rphy(ctrl_info, rphy);
6403 if (device) {
6404 if (device->target_lun_valid) {
6405 device->ignore_device = true;
6406 } else {
6407 device->target = sdev_id(sdev);
6408 device->lun = sdev->lun;
6409 device->target_lun_valid = true;
6410 }
6411 }
6412 } else {
6413 device = pqi_find_scsi_dev(ctrl_info, sdev_channel(sdev),
6414 sdev_id(sdev), sdev->lun);
6415 }
6416
6417 if (device) {
6418 sdev->hostdata = device;
6419 device->sdev = sdev;
6420 if (device->queue_depth) {
6421 device->advertised_queue_depth = device->queue_depth;
6422 scsi_change_queue_depth(sdev,
6423 device->advertised_queue_depth);
6424 }
6425 if (pqi_is_logical_device(device)) {
6426 pqi_disable_write_same(sdev);
6427 } else {
6428 sdev->allow_restart = 1;
6429 if (device->device_type == SA_DEVICE_TYPE_NVME)
6430 pqi_disable_write_same(sdev);
6431 }
6432 }
6433
6434 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
6435
6436 return 0;
6437 }
6438
pqi_map_queues(struct Scsi_Host * shost)6439 static void pqi_map_queues(struct Scsi_Host *shost)
6440 {
6441 struct pqi_ctrl_info *ctrl_info = shost_to_hba(shost);
6442
6443 blk_mq_pci_map_queues(&shost->tag_set.map[HCTX_TYPE_DEFAULT],
6444 ctrl_info->pci_dev, 0);
6445 }
6446
pqi_is_tape_changer_device(struct pqi_scsi_dev * device)6447 static inline bool pqi_is_tape_changer_device(struct pqi_scsi_dev *device)
6448 {
6449 return device->devtype == TYPE_TAPE || device->devtype == TYPE_MEDIUM_CHANGER;
6450 }
6451
pqi_slave_configure(struct scsi_device * sdev)6452 static int pqi_slave_configure(struct scsi_device *sdev)
6453 {
6454 int rc = 0;
6455 struct pqi_scsi_dev *device;
6456
6457 device = sdev->hostdata;
6458 device->devtype = sdev->type;
6459
6460 if (pqi_is_tape_changer_device(device) && device->ignore_device) {
6461 rc = -ENXIO;
6462 device->ignore_device = false;
6463 }
6464
6465 return rc;
6466 }
6467
pqi_slave_destroy(struct scsi_device * sdev)6468 static void pqi_slave_destroy(struct scsi_device *sdev)
6469 {
6470 struct pqi_ctrl_info *ctrl_info;
6471 struct pqi_scsi_dev *device;
6472 int mutex_acquired;
6473 unsigned long flags;
6474
6475 ctrl_info = shost_to_hba(sdev->host);
6476
6477 mutex_acquired = mutex_trylock(&ctrl_info->scan_mutex);
6478 if (!mutex_acquired)
6479 return;
6480
6481 device = sdev->hostdata;
6482 if (!device) {
6483 mutex_unlock(&ctrl_info->scan_mutex);
6484 return;
6485 }
6486
6487 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
6488 list_del(&device->scsi_device_list_entry);
6489 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
6490
6491 mutex_unlock(&ctrl_info->scan_mutex);
6492
6493 pqi_dev_info(ctrl_info, "removed", device);
6494 pqi_free_device(device);
6495 }
6496
pqi_getpciinfo_ioctl(struct pqi_ctrl_info * ctrl_info,void __user * arg)6497 static int pqi_getpciinfo_ioctl(struct pqi_ctrl_info *ctrl_info, void __user *arg)
6498 {
6499 struct pci_dev *pci_dev;
6500 u32 subsystem_vendor;
6501 u32 subsystem_device;
6502 cciss_pci_info_struct pciinfo;
6503
6504 if (!arg)
6505 return -EINVAL;
6506
6507 pci_dev = ctrl_info->pci_dev;
6508
6509 pciinfo.domain = pci_domain_nr(pci_dev->bus);
6510 pciinfo.bus = pci_dev->bus->number;
6511 pciinfo.dev_fn = pci_dev->devfn;
6512 subsystem_vendor = pci_dev->subsystem_vendor;
6513 subsystem_device = pci_dev->subsystem_device;
6514 pciinfo.board_id = ((subsystem_device << 16) & 0xffff0000) | subsystem_vendor;
6515
6516 if (copy_to_user(arg, &pciinfo, sizeof(pciinfo)))
6517 return -EFAULT;
6518
6519 return 0;
6520 }
6521
pqi_getdrivver_ioctl(void __user * arg)6522 static int pqi_getdrivver_ioctl(void __user *arg)
6523 {
6524 u32 version;
6525
6526 if (!arg)
6527 return -EINVAL;
6528
6529 version = (DRIVER_MAJOR << 28) | (DRIVER_MINOR << 24) |
6530 (DRIVER_RELEASE << 16) | DRIVER_REVISION;
6531
6532 if (copy_to_user(arg, &version, sizeof(version)))
6533 return -EFAULT;
6534
6535 return 0;
6536 }
6537
6538 struct ciss_error_info {
6539 u8 scsi_status;
6540 int command_status;
6541 size_t sense_data_length;
6542 };
6543
pqi_error_info_to_ciss(struct pqi_raid_error_info * pqi_error_info,struct ciss_error_info * ciss_error_info)6544 static void pqi_error_info_to_ciss(struct pqi_raid_error_info *pqi_error_info,
6545 struct ciss_error_info *ciss_error_info)
6546 {
6547 int ciss_cmd_status;
6548 size_t sense_data_length;
6549
6550 switch (pqi_error_info->data_out_result) {
6551 case PQI_DATA_IN_OUT_GOOD:
6552 ciss_cmd_status = CISS_CMD_STATUS_SUCCESS;
6553 break;
6554 case PQI_DATA_IN_OUT_UNDERFLOW:
6555 ciss_cmd_status = CISS_CMD_STATUS_DATA_UNDERRUN;
6556 break;
6557 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW:
6558 ciss_cmd_status = CISS_CMD_STATUS_DATA_OVERRUN;
6559 break;
6560 case PQI_DATA_IN_OUT_PROTOCOL_ERROR:
6561 case PQI_DATA_IN_OUT_BUFFER_ERROR:
6562 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_DESCRIPTOR_AREA:
6563 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_BRIDGE:
6564 case PQI_DATA_IN_OUT_ERROR:
6565 ciss_cmd_status = CISS_CMD_STATUS_PROTOCOL_ERROR;
6566 break;
6567 case PQI_DATA_IN_OUT_HARDWARE_ERROR:
6568 case PQI_DATA_IN_OUT_PCIE_FABRIC_ERROR:
6569 case PQI_DATA_IN_OUT_PCIE_COMPLETION_TIMEOUT:
6570 case PQI_DATA_IN_OUT_PCIE_COMPLETER_ABORT_RECEIVED:
6571 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST_RECEIVED:
6572 case PQI_DATA_IN_OUT_PCIE_ECRC_CHECK_FAILED:
6573 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST:
6574 case PQI_DATA_IN_OUT_PCIE_ACS_VIOLATION:
6575 case PQI_DATA_IN_OUT_PCIE_TLP_PREFIX_BLOCKED:
6576 case PQI_DATA_IN_OUT_PCIE_POISONED_MEMORY_READ:
6577 ciss_cmd_status = CISS_CMD_STATUS_HARDWARE_ERROR;
6578 break;
6579 case PQI_DATA_IN_OUT_UNSOLICITED_ABORT:
6580 ciss_cmd_status = CISS_CMD_STATUS_UNSOLICITED_ABORT;
6581 break;
6582 case PQI_DATA_IN_OUT_ABORTED:
6583 ciss_cmd_status = CISS_CMD_STATUS_ABORTED;
6584 break;
6585 case PQI_DATA_IN_OUT_TIMEOUT:
6586 ciss_cmd_status = CISS_CMD_STATUS_TIMEOUT;
6587 break;
6588 default:
6589 ciss_cmd_status = CISS_CMD_STATUS_TARGET_STATUS;
6590 break;
6591 }
6592
6593 sense_data_length =
6594 get_unaligned_le16(&pqi_error_info->sense_data_length);
6595 if (sense_data_length == 0)
6596 sense_data_length =
6597 get_unaligned_le16(&pqi_error_info->response_data_length);
6598 if (sense_data_length)
6599 if (sense_data_length > sizeof(pqi_error_info->data))
6600 sense_data_length = sizeof(pqi_error_info->data);
6601
6602 ciss_error_info->scsi_status = pqi_error_info->status;
6603 ciss_error_info->command_status = ciss_cmd_status;
6604 ciss_error_info->sense_data_length = sense_data_length;
6605 }
6606
pqi_passthru_ioctl(struct pqi_ctrl_info * ctrl_info,void __user * arg)6607 static int pqi_passthru_ioctl(struct pqi_ctrl_info *ctrl_info, void __user *arg)
6608 {
6609 int rc;
6610 char *kernel_buffer = NULL;
6611 u16 iu_length;
6612 size_t sense_data_length;
6613 IOCTL_Command_struct iocommand;
6614 struct pqi_raid_path_request request;
6615 struct pqi_raid_error_info pqi_error_info;
6616 struct ciss_error_info ciss_error_info;
6617
6618 if (pqi_ctrl_offline(ctrl_info))
6619 return -ENXIO;
6620 if (pqi_ofa_in_progress(ctrl_info) && pqi_ctrl_blocked(ctrl_info))
6621 return -EBUSY;
6622 if (!arg)
6623 return -EINVAL;
6624 if (!capable(CAP_SYS_RAWIO))
6625 return -EPERM;
6626 if (copy_from_user(&iocommand, arg, sizeof(iocommand)))
6627 return -EFAULT;
6628 if (iocommand.buf_size < 1 &&
6629 iocommand.Request.Type.Direction != XFER_NONE)
6630 return -EINVAL;
6631 if (iocommand.Request.CDBLen > sizeof(request.cdb))
6632 return -EINVAL;
6633 if (iocommand.Request.Type.Type != TYPE_CMD)
6634 return -EINVAL;
6635
6636 switch (iocommand.Request.Type.Direction) {
6637 case XFER_NONE:
6638 case XFER_WRITE:
6639 case XFER_READ:
6640 case XFER_READ | XFER_WRITE:
6641 break;
6642 default:
6643 return -EINVAL;
6644 }
6645
6646 if (iocommand.buf_size > 0) {
6647 kernel_buffer = kmalloc(iocommand.buf_size, GFP_KERNEL);
6648 if (!kernel_buffer)
6649 return -ENOMEM;
6650 if (iocommand.Request.Type.Direction & XFER_WRITE) {
6651 if (copy_from_user(kernel_buffer, iocommand.buf,
6652 iocommand.buf_size)) {
6653 rc = -EFAULT;
6654 goto out;
6655 }
6656 } else {
6657 memset(kernel_buffer, 0, iocommand.buf_size);
6658 }
6659 }
6660
6661 memset(&request, 0, sizeof(request));
6662
6663 request.header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO;
6664 iu_length = offsetof(struct pqi_raid_path_request, sg_descriptors) -
6665 PQI_REQUEST_HEADER_LENGTH;
6666 memcpy(request.lun_number, iocommand.LUN_info.LunAddrBytes,
6667 sizeof(request.lun_number));
6668 memcpy(request.cdb, iocommand.Request.CDB, iocommand.Request.CDBLen);
6669 request.additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_0;
6670
6671 switch (iocommand.Request.Type.Direction) {
6672 case XFER_NONE:
6673 request.data_direction = SOP_NO_DIRECTION_FLAG;
6674 break;
6675 case XFER_WRITE:
6676 request.data_direction = SOP_WRITE_FLAG;
6677 break;
6678 case XFER_READ:
6679 request.data_direction = SOP_READ_FLAG;
6680 break;
6681 case XFER_READ | XFER_WRITE:
6682 request.data_direction = SOP_BIDIRECTIONAL;
6683 break;
6684 }
6685
6686 request.task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
6687
6688 if (iocommand.buf_size > 0) {
6689 put_unaligned_le32(iocommand.buf_size, &request.buffer_length);
6690
6691 rc = pqi_map_single(ctrl_info->pci_dev,
6692 &request.sg_descriptors[0], kernel_buffer,
6693 iocommand.buf_size, DMA_BIDIRECTIONAL);
6694 if (rc)
6695 goto out;
6696
6697 iu_length += sizeof(request.sg_descriptors[0]);
6698 }
6699
6700 put_unaligned_le16(iu_length, &request.header.iu_length);
6701
6702 if (ctrl_info->raid_iu_timeout_supported)
6703 put_unaligned_le32(iocommand.Request.Timeout, &request.timeout);
6704
6705 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
6706 PQI_SYNC_FLAGS_INTERRUPTABLE, &pqi_error_info);
6707
6708 if (iocommand.buf_size > 0)
6709 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1,
6710 DMA_BIDIRECTIONAL);
6711
6712 memset(&iocommand.error_info, 0, sizeof(iocommand.error_info));
6713
6714 if (rc == 0) {
6715 pqi_error_info_to_ciss(&pqi_error_info, &ciss_error_info);
6716 iocommand.error_info.ScsiStatus = ciss_error_info.scsi_status;
6717 iocommand.error_info.CommandStatus =
6718 ciss_error_info.command_status;
6719 sense_data_length = ciss_error_info.sense_data_length;
6720 if (sense_data_length) {
6721 if (sense_data_length >
6722 sizeof(iocommand.error_info.SenseInfo))
6723 sense_data_length =
6724 sizeof(iocommand.error_info.SenseInfo);
6725 memcpy(iocommand.error_info.SenseInfo,
6726 pqi_error_info.data, sense_data_length);
6727 iocommand.error_info.SenseLen = sense_data_length;
6728 }
6729 }
6730
6731 if (copy_to_user(arg, &iocommand, sizeof(iocommand))) {
6732 rc = -EFAULT;
6733 goto out;
6734 }
6735
6736 if (rc == 0 && iocommand.buf_size > 0 &&
6737 (iocommand.Request.Type.Direction & XFER_READ)) {
6738 if (copy_to_user(iocommand.buf, kernel_buffer,
6739 iocommand.buf_size)) {
6740 rc = -EFAULT;
6741 }
6742 }
6743
6744 out:
6745 kfree(kernel_buffer);
6746
6747 return rc;
6748 }
6749
pqi_ioctl(struct scsi_device * sdev,unsigned int cmd,void __user * arg)6750 static int pqi_ioctl(struct scsi_device *sdev, unsigned int cmd,
6751 void __user *arg)
6752 {
6753 int rc;
6754 struct pqi_ctrl_info *ctrl_info;
6755
6756 ctrl_info = shost_to_hba(sdev->host);
6757
6758 switch (cmd) {
6759 case CCISS_DEREGDISK:
6760 case CCISS_REGNEWDISK:
6761 case CCISS_REGNEWD:
6762 rc = pqi_scan_scsi_devices(ctrl_info);
6763 break;
6764 case CCISS_GETPCIINFO:
6765 rc = pqi_getpciinfo_ioctl(ctrl_info, arg);
6766 break;
6767 case CCISS_GETDRIVVER:
6768 rc = pqi_getdrivver_ioctl(arg);
6769 break;
6770 case CCISS_PASSTHRU:
6771 rc = pqi_passthru_ioctl(ctrl_info, arg);
6772 break;
6773 default:
6774 rc = -EINVAL;
6775 break;
6776 }
6777
6778 return rc;
6779 }
6780
pqi_firmware_version_show(struct device * dev,struct device_attribute * attr,char * buffer)6781 static ssize_t pqi_firmware_version_show(struct device *dev,
6782 struct device_attribute *attr, char *buffer)
6783 {
6784 struct Scsi_Host *shost;
6785 struct pqi_ctrl_info *ctrl_info;
6786
6787 shost = class_to_shost(dev);
6788 ctrl_info = shost_to_hba(shost);
6789
6790 return scnprintf(buffer, PAGE_SIZE, "%s\n", ctrl_info->firmware_version);
6791 }
6792
pqi_driver_version_show(struct device * dev,struct device_attribute * attr,char * buffer)6793 static ssize_t pqi_driver_version_show(struct device *dev,
6794 struct device_attribute *attr, char *buffer)
6795 {
6796 return scnprintf(buffer, PAGE_SIZE, "%s\n", DRIVER_VERSION BUILD_TIMESTAMP);
6797 }
6798
pqi_serial_number_show(struct device * dev,struct device_attribute * attr,char * buffer)6799 static ssize_t pqi_serial_number_show(struct device *dev,
6800 struct device_attribute *attr, char *buffer)
6801 {
6802 struct Scsi_Host *shost;
6803 struct pqi_ctrl_info *ctrl_info;
6804
6805 shost = class_to_shost(dev);
6806 ctrl_info = shost_to_hba(shost);
6807
6808 return scnprintf(buffer, PAGE_SIZE, "%s\n", ctrl_info->serial_number);
6809 }
6810
pqi_model_show(struct device * dev,struct device_attribute * attr,char * buffer)6811 static ssize_t pqi_model_show(struct device *dev,
6812 struct device_attribute *attr, char *buffer)
6813 {
6814 struct Scsi_Host *shost;
6815 struct pqi_ctrl_info *ctrl_info;
6816
6817 shost = class_to_shost(dev);
6818 ctrl_info = shost_to_hba(shost);
6819
6820 return scnprintf(buffer, PAGE_SIZE, "%s\n", ctrl_info->model);
6821 }
6822
pqi_vendor_show(struct device * dev,struct device_attribute * attr,char * buffer)6823 static ssize_t pqi_vendor_show(struct device *dev,
6824 struct device_attribute *attr, char *buffer)
6825 {
6826 struct Scsi_Host *shost;
6827 struct pqi_ctrl_info *ctrl_info;
6828
6829 shost = class_to_shost(dev);
6830 ctrl_info = shost_to_hba(shost);
6831
6832 return scnprintf(buffer, PAGE_SIZE, "%s\n", ctrl_info->vendor);
6833 }
6834
pqi_host_rescan_store(struct device * dev,struct device_attribute * attr,const char * buffer,size_t count)6835 static ssize_t pqi_host_rescan_store(struct device *dev,
6836 struct device_attribute *attr, const char *buffer, size_t count)
6837 {
6838 struct Scsi_Host *shost = class_to_shost(dev);
6839
6840 pqi_scan_start(shost);
6841
6842 return count;
6843 }
6844
pqi_lockup_action_show(struct device * dev,struct device_attribute * attr,char * buffer)6845 static ssize_t pqi_lockup_action_show(struct device *dev,
6846 struct device_attribute *attr, char *buffer)
6847 {
6848 int count = 0;
6849 unsigned int i;
6850
6851 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) {
6852 if (pqi_lockup_actions[i].action == pqi_lockup_action)
6853 count += scnprintf(buffer + count, PAGE_SIZE - count,
6854 "[%s] ", pqi_lockup_actions[i].name);
6855 else
6856 count += scnprintf(buffer + count, PAGE_SIZE - count,
6857 "%s ", pqi_lockup_actions[i].name);
6858 }
6859
6860 count += scnprintf(buffer + count, PAGE_SIZE - count, "\n");
6861
6862 return count;
6863 }
6864
pqi_lockup_action_store(struct device * dev,struct device_attribute * attr,const char * buffer,size_t count)6865 static ssize_t pqi_lockup_action_store(struct device *dev,
6866 struct device_attribute *attr, const char *buffer, size_t count)
6867 {
6868 unsigned int i;
6869 char *action_name;
6870 char action_name_buffer[32];
6871
6872 strlcpy(action_name_buffer, buffer, sizeof(action_name_buffer));
6873 action_name = strstrip(action_name_buffer);
6874
6875 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) {
6876 if (strcmp(action_name, pqi_lockup_actions[i].name) == 0) {
6877 pqi_lockup_action = pqi_lockup_actions[i].action;
6878 return count;
6879 }
6880 }
6881
6882 return -EINVAL;
6883 }
6884
pqi_host_enable_stream_detection_show(struct device * dev,struct device_attribute * attr,char * buffer)6885 static ssize_t pqi_host_enable_stream_detection_show(struct device *dev,
6886 struct device_attribute *attr, char *buffer)
6887 {
6888 struct Scsi_Host *shost = class_to_shost(dev);
6889 struct pqi_ctrl_info *ctrl_info = shost_to_hba(shost);
6890
6891 return scnprintf(buffer, 10, "%x\n",
6892 ctrl_info->enable_stream_detection);
6893 }
6894
pqi_host_enable_stream_detection_store(struct device * dev,struct device_attribute * attr,const char * buffer,size_t count)6895 static ssize_t pqi_host_enable_stream_detection_store(struct device *dev,
6896 struct device_attribute *attr, const char *buffer, size_t count)
6897 {
6898 struct Scsi_Host *shost = class_to_shost(dev);
6899 struct pqi_ctrl_info *ctrl_info = shost_to_hba(shost);
6900 u8 set_stream_detection = 0;
6901
6902 if (kstrtou8(buffer, 0, &set_stream_detection))
6903 return -EINVAL;
6904
6905 if (set_stream_detection > 0)
6906 set_stream_detection = 1;
6907
6908 ctrl_info->enable_stream_detection = set_stream_detection;
6909
6910 return count;
6911 }
6912
pqi_host_enable_r5_writes_show(struct device * dev,struct device_attribute * attr,char * buffer)6913 static ssize_t pqi_host_enable_r5_writes_show(struct device *dev,
6914 struct device_attribute *attr, char *buffer)
6915 {
6916 struct Scsi_Host *shost = class_to_shost(dev);
6917 struct pqi_ctrl_info *ctrl_info = shost_to_hba(shost);
6918
6919 return scnprintf(buffer, 10, "%x\n", ctrl_info->enable_r5_writes);
6920 }
6921
pqi_host_enable_r5_writes_store(struct device * dev,struct device_attribute * attr,const char * buffer,size_t count)6922 static ssize_t pqi_host_enable_r5_writes_store(struct device *dev,
6923 struct device_attribute *attr, const char *buffer, size_t count)
6924 {
6925 struct Scsi_Host *shost = class_to_shost(dev);
6926 struct pqi_ctrl_info *ctrl_info = shost_to_hba(shost);
6927 u8 set_r5_writes = 0;
6928
6929 if (kstrtou8(buffer, 0, &set_r5_writes))
6930 return -EINVAL;
6931
6932 if (set_r5_writes > 0)
6933 set_r5_writes = 1;
6934
6935 ctrl_info->enable_r5_writes = set_r5_writes;
6936
6937 return count;
6938 }
6939
pqi_host_enable_r6_writes_show(struct device * dev,struct device_attribute * attr,char * buffer)6940 static ssize_t pqi_host_enable_r6_writes_show(struct device *dev,
6941 struct device_attribute *attr, char *buffer)
6942 {
6943 struct Scsi_Host *shost = class_to_shost(dev);
6944 struct pqi_ctrl_info *ctrl_info = shost_to_hba(shost);
6945
6946 return scnprintf(buffer, 10, "%x\n", ctrl_info->enable_r6_writes);
6947 }
6948
pqi_host_enable_r6_writes_store(struct device * dev,struct device_attribute * attr,const char * buffer,size_t count)6949 static ssize_t pqi_host_enable_r6_writes_store(struct device *dev,
6950 struct device_attribute *attr, const char *buffer, size_t count)
6951 {
6952 struct Scsi_Host *shost = class_to_shost(dev);
6953 struct pqi_ctrl_info *ctrl_info = shost_to_hba(shost);
6954 u8 set_r6_writes = 0;
6955
6956 if (kstrtou8(buffer, 0, &set_r6_writes))
6957 return -EINVAL;
6958
6959 if (set_r6_writes > 0)
6960 set_r6_writes = 1;
6961
6962 ctrl_info->enable_r6_writes = set_r6_writes;
6963
6964 return count;
6965 }
6966
6967 static DEVICE_ATTR(driver_version, 0444, pqi_driver_version_show, NULL);
6968 static DEVICE_ATTR(firmware_version, 0444, pqi_firmware_version_show, NULL);
6969 static DEVICE_ATTR(model, 0444, pqi_model_show, NULL);
6970 static DEVICE_ATTR(serial_number, 0444, pqi_serial_number_show, NULL);
6971 static DEVICE_ATTR(vendor, 0444, pqi_vendor_show, NULL);
6972 static DEVICE_ATTR(rescan, 0200, NULL, pqi_host_rescan_store);
6973 static DEVICE_ATTR(lockup_action, 0644, pqi_lockup_action_show,
6974 pqi_lockup_action_store);
6975 static DEVICE_ATTR(enable_stream_detection, 0644,
6976 pqi_host_enable_stream_detection_show,
6977 pqi_host_enable_stream_detection_store);
6978 static DEVICE_ATTR(enable_r5_writes, 0644,
6979 pqi_host_enable_r5_writes_show, pqi_host_enable_r5_writes_store);
6980 static DEVICE_ATTR(enable_r6_writes, 0644,
6981 pqi_host_enable_r6_writes_show, pqi_host_enable_r6_writes_store);
6982
6983 static struct attribute *pqi_shost_attrs[] = {
6984 &dev_attr_driver_version.attr,
6985 &dev_attr_firmware_version.attr,
6986 &dev_attr_model.attr,
6987 &dev_attr_serial_number.attr,
6988 &dev_attr_vendor.attr,
6989 &dev_attr_rescan.attr,
6990 &dev_attr_lockup_action.attr,
6991 &dev_attr_enable_stream_detection.attr,
6992 &dev_attr_enable_r5_writes.attr,
6993 &dev_attr_enable_r6_writes.attr,
6994 NULL
6995 };
6996
6997 ATTRIBUTE_GROUPS(pqi_shost);
6998
pqi_unique_id_show(struct device * dev,struct device_attribute * attr,char * buffer)6999 static ssize_t pqi_unique_id_show(struct device *dev,
7000 struct device_attribute *attr, char *buffer)
7001 {
7002 struct pqi_ctrl_info *ctrl_info;
7003 struct scsi_device *sdev;
7004 struct pqi_scsi_dev *device;
7005 unsigned long flags;
7006 u8 unique_id[16];
7007
7008 sdev = to_scsi_device(dev);
7009 ctrl_info = shost_to_hba(sdev->host);
7010
7011 if (pqi_ctrl_offline(ctrl_info))
7012 return -ENODEV;
7013
7014 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
7015
7016 device = sdev->hostdata;
7017 if (!device) {
7018 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
7019 return -ENODEV;
7020 }
7021
7022 if (device->is_physical_device)
7023 memcpy(unique_id, device->wwid, sizeof(device->wwid));
7024 else
7025 memcpy(unique_id, device->volume_id, sizeof(device->volume_id));
7026
7027 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
7028
7029 return scnprintf(buffer, PAGE_SIZE,
7030 "%02X%02X%02X%02X%02X%02X%02X%02X"
7031 "%02X%02X%02X%02X%02X%02X%02X%02X\n",
7032 unique_id[0], unique_id[1], unique_id[2], unique_id[3],
7033 unique_id[4], unique_id[5], unique_id[6], unique_id[7],
7034 unique_id[8], unique_id[9], unique_id[10], unique_id[11],
7035 unique_id[12], unique_id[13], unique_id[14], unique_id[15]);
7036 }
7037
pqi_lunid_show(struct device * dev,struct device_attribute * attr,char * buffer)7038 static ssize_t pqi_lunid_show(struct device *dev,
7039 struct device_attribute *attr, char *buffer)
7040 {
7041 struct pqi_ctrl_info *ctrl_info;
7042 struct scsi_device *sdev;
7043 struct pqi_scsi_dev *device;
7044 unsigned long flags;
7045 u8 lunid[8];
7046
7047 sdev = to_scsi_device(dev);
7048 ctrl_info = shost_to_hba(sdev->host);
7049
7050 if (pqi_ctrl_offline(ctrl_info))
7051 return -ENODEV;
7052
7053 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
7054
7055 device = sdev->hostdata;
7056 if (!device) {
7057 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
7058 return -ENODEV;
7059 }
7060
7061 memcpy(lunid, device->scsi3addr, sizeof(lunid));
7062
7063 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
7064
7065 return scnprintf(buffer, PAGE_SIZE, "0x%8phN\n", lunid);
7066 }
7067
7068 #define MAX_PATHS 8
7069
pqi_path_info_show(struct device * dev,struct device_attribute * attr,char * buf)7070 static ssize_t pqi_path_info_show(struct device *dev,
7071 struct device_attribute *attr, char *buf)
7072 {
7073 struct pqi_ctrl_info *ctrl_info;
7074 struct scsi_device *sdev;
7075 struct pqi_scsi_dev *device;
7076 unsigned long flags;
7077 int i;
7078 int output_len = 0;
7079 u8 box;
7080 u8 bay;
7081 u8 path_map_index;
7082 char *active;
7083 u8 phys_connector[2];
7084
7085 sdev = to_scsi_device(dev);
7086 ctrl_info = shost_to_hba(sdev->host);
7087
7088 if (pqi_ctrl_offline(ctrl_info))
7089 return -ENODEV;
7090
7091 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
7092
7093 device = sdev->hostdata;
7094 if (!device) {
7095 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
7096 return -ENODEV;
7097 }
7098
7099 bay = device->bay;
7100 for (i = 0; i < MAX_PATHS; i++) {
7101 path_map_index = 1 << i;
7102 if (i == device->active_path_index)
7103 active = "Active";
7104 else if (device->path_map & path_map_index)
7105 active = "Inactive";
7106 else
7107 continue;
7108
7109 output_len += scnprintf(buf + output_len,
7110 PAGE_SIZE - output_len,
7111 "[%d:%d:%d:%d] %20.20s ",
7112 ctrl_info->scsi_host->host_no,
7113 device->bus, device->target,
7114 device->lun,
7115 scsi_device_type(device->devtype));
7116
7117 if (device->devtype == TYPE_RAID ||
7118 pqi_is_logical_device(device))
7119 goto end_buffer;
7120
7121 memcpy(&phys_connector, &device->phys_connector[i],
7122 sizeof(phys_connector));
7123 if (phys_connector[0] < '0')
7124 phys_connector[0] = '0';
7125 if (phys_connector[1] < '0')
7126 phys_connector[1] = '0';
7127
7128 output_len += scnprintf(buf + output_len,
7129 PAGE_SIZE - output_len,
7130 "PORT: %.2s ", phys_connector);
7131
7132 box = device->box[i];
7133 if (box != 0 && box != 0xFF)
7134 output_len += scnprintf(buf + output_len,
7135 PAGE_SIZE - output_len,
7136 "BOX: %hhu ", box);
7137
7138 if ((device->devtype == TYPE_DISK ||
7139 device->devtype == TYPE_ZBC) &&
7140 pqi_expose_device(device))
7141 output_len += scnprintf(buf + output_len,
7142 PAGE_SIZE - output_len,
7143 "BAY: %hhu ", bay);
7144
7145 end_buffer:
7146 output_len += scnprintf(buf + output_len,
7147 PAGE_SIZE - output_len,
7148 "%s\n", active);
7149 }
7150
7151 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
7152
7153 return output_len;
7154 }
7155
pqi_sas_address_show(struct device * dev,struct device_attribute * attr,char * buffer)7156 static ssize_t pqi_sas_address_show(struct device *dev,
7157 struct device_attribute *attr, char *buffer)
7158 {
7159 struct pqi_ctrl_info *ctrl_info;
7160 struct scsi_device *sdev;
7161 struct pqi_scsi_dev *device;
7162 unsigned long flags;
7163 u64 sas_address;
7164
7165 sdev = to_scsi_device(dev);
7166 ctrl_info = shost_to_hba(sdev->host);
7167
7168 if (pqi_ctrl_offline(ctrl_info))
7169 return -ENODEV;
7170
7171 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
7172
7173 device = sdev->hostdata;
7174 if (!device) {
7175 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
7176 return -ENODEV;
7177 }
7178
7179 sas_address = device->sas_address;
7180
7181 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
7182
7183 return scnprintf(buffer, PAGE_SIZE, "0x%016llx\n", sas_address);
7184 }
7185
pqi_ssd_smart_path_enabled_show(struct device * dev,struct device_attribute * attr,char * buffer)7186 static ssize_t pqi_ssd_smart_path_enabled_show(struct device *dev,
7187 struct device_attribute *attr, char *buffer)
7188 {
7189 struct pqi_ctrl_info *ctrl_info;
7190 struct scsi_device *sdev;
7191 struct pqi_scsi_dev *device;
7192 unsigned long flags;
7193
7194 sdev = to_scsi_device(dev);
7195 ctrl_info = shost_to_hba(sdev->host);
7196
7197 if (pqi_ctrl_offline(ctrl_info))
7198 return -ENODEV;
7199
7200 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
7201
7202 device = sdev->hostdata;
7203 if (!device) {
7204 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
7205 return -ENODEV;
7206 }
7207
7208 buffer[0] = device->raid_bypass_enabled ? '1' : '0';
7209 buffer[1] = '\n';
7210 buffer[2] = '\0';
7211
7212 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
7213
7214 return 2;
7215 }
7216
pqi_raid_level_show(struct device * dev,struct device_attribute * attr,char * buffer)7217 static ssize_t pqi_raid_level_show(struct device *dev,
7218 struct device_attribute *attr, char *buffer)
7219 {
7220 struct pqi_ctrl_info *ctrl_info;
7221 struct scsi_device *sdev;
7222 struct pqi_scsi_dev *device;
7223 unsigned long flags;
7224 char *raid_level;
7225
7226 sdev = to_scsi_device(dev);
7227 ctrl_info = shost_to_hba(sdev->host);
7228
7229 if (pqi_ctrl_offline(ctrl_info))
7230 return -ENODEV;
7231
7232 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
7233
7234 device = sdev->hostdata;
7235 if (!device) {
7236 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
7237 return -ENODEV;
7238 }
7239
7240 if (pqi_is_logical_device(device))
7241 raid_level = pqi_raid_level_to_string(device->raid_level);
7242 else
7243 raid_level = "N/A";
7244
7245 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
7246
7247 return scnprintf(buffer, PAGE_SIZE, "%s\n", raid_level);
7248 }
7249
pqi_raid_bypass_cnt_show(struct device * dev,struct device_attribute * attr,char * buffer)7250 static ssize_t pqi_raid_bypass_cnt_show(struct device *dev,
7251 struct device_attribute *attr, char *buffer)
7252 {
7253 struct pqi_ctrl_info *ctrl_info;
7254 struct scsi_device *sdev;
7255 struct pqi_scsi_dev *device;
7256 unsigned long flags;
7257 int raid_bypass_cnt;
7258
7259 sdev = to_scsi_device(dev);
7260 ctrl_info = shost_to_hba(sdev->host);
7261
7262 if (pqi_ctrl_offline(ctrl_info))
7263 return -ENODEV;
7264
7265 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
7266
7267 device = sdev->hostdata;
7268 if (!device) {
7269 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
7270 return -ENODEV;
7271 }
7272
7273 raid_bypass_cnt = atomic_read(&device->raid_bypass_cnt);
7274
7275 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
7276
7277 return scnprintf(buffer, PAGE_SIZE, "0x%x\n", raid_bypass_cnt);
7278 }
7279
pqi_sas_ncq_prio_enable_show(struct device * dev,struct device_attribute * attr,char * buf)7280 static ssize_t pqi_sas_ncq_prio_enable_show(struct device *dev,
7281 struct device_attribute *attr, char *buf)
7282 {
7283 struct pqi_ctrl_info *ctrl_info;
7284 struct scsi_device *sdev;
7285 struct pqi_scsi_dev *device;
7286 unsigned long flags;
7287 int output_len = 0;
7288
7289 sdev = to_scsi_device(dev);
7290 ctrl_info = shost_to_hba(sdev->host);
7291
7292 if (pqi_ctrl_offline(ctrl_info))
7293 return -ENODEV;
7294
7295 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
7296
7297 device = sdev->hostdata;
7298 if (!device) {
7299 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
7300 return -ENODEV;
7301 }
7302
7303 output_len = snprintf(buf, PAGE_SIZE, "%d\n",
7304 device->ncq_prio_enable);
7305 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
7306
7307 return output_len;
7308 }
7309
pqi_sas_ncq_prio_enable_store(struct device * dev,struct device_attribute * attr,const char * buf,size_t count)7310 static ssize_t pqi_sas_ncq_prio_enable_store(struct device *dev,
7311 struct device_attribute *attr,
7312 const char *buf, size_t count)
7313 {
7314 struct pqi_ctrl_info *ctrl_info;
7315 struct scsi_device *sdev;
7316 struct pqi_scsi_dev *device;
7317 unsigned long flags;
7318 u8 ncq_prio_enable = 0;
7319
7320 if (kstrtou8(buf, 0, &ncq_prio_enable))
7321 return -EINVAL;
7322
7323 sdev = to_scsi_device(dev);
7324 ctrl_info = shost_to_hba(sdev->host);
7325
7326 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
7327
7328 device = sdev->hostdata;
7329
7330 if (!device) {
7331 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
7332 return -ENODEV;
7333 }
7334
7335 if (!device->ncq_prio_support ||
7336 !device->is_physical_device) {
7337 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
7338 return -EINVAL;
7339 }
7340
7341 device->ncq_prio_enable = ncq_prio_enable;
7342
7343 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
7344
7345 return strlen(buf);
7346 }
7347
7348 static DEVICE_ATTR(lunid, 0444, pqi_lunid_show, NULL);
7349 static DEVICE_ATTR(unique_id, 0444, pqi_unique_id_show, NULL);
7350 static DEVICE_ATTR(path_info, 0444, pqi_path_info_show, NULL);
7351 static DEVICE_ATTR(sas_address, 0444, pqi_sas_address_show, NULL);
7352 static DEVICE_ATTR(ssd_smart_path_enabled, 0444, pqi_ssd_smart_path_enabled_show, NULL);
7353 static DEVICE_ATTR(raid_level, 0444, pqi_raid_level_show, NULL);
7354 static DEVICE_ATTR(raid_bypass_cnt, 0444, pqi_raid_bypass_cnt_show, NULL);
7355 static DEVICE_ATTR(sas_ncq_prio_enable, 0644,
7356 pqi_sas_ncq_prio_enable_show, pqi_sas_ncq_prio_enable_store);
7357
7358 static struct attribute *pqi_sdev_attrs[] = {
7359 &dev_attr_lunid.attr,
7360 &dev_attr_unique_id.attr,
7361 &dev_attr_path_info.attr,
7362 &dev_attr_sas_address.attr,
7363 &dev_attr_ssd_smart_path_enabled.attr,
7364 &dev_attr_raid_level.attr,
7365 &dev_attr_raid_bypass_cnt.attr,
7366 &dev_attr_sas_ncq_prio_enable.attr,
7367 NULL
7368 };
7369
7370 ATTRIBUTE_GROUPS(pqi_sdev);
7371
7372 static struct scsi_host_template pqi_driver_template = {
7373 .module = THIS_MODULE,
7374 .name = DRIVER_NAME_SHORT,
7375 .proc_name = DRIVER_NAME_SHORT,
7376 .queuecommand = pqi_scsi_queue_command,
7377 .scan_start = pqi_scan_start,
7378 .scan_finished = pqi_scan_finished,
7379 .this_id = -1,
7380 .eh_device_reset_handler = pqi_eh_device_reset_handler,
7381 .ioctl = pqi_ioctl,
7382 .slave_alloc = pqi_slave_alloc,
7383 .slave_configure = pqi_slave_configure,
7384 .slave_destroy = pqi_slave_destroy,
7385 .map_queues = pqi_map_queues,
7386 .sdev_groups = pqi_sdev_groups,
7387 .shost_groups = pqi_shost_groups,
7388 .cmd_size = sizeof(struct pqi_cmd_priv),
7389 };
7390
pqi_register_scsi(struct pqi_ctrl_info * ctrl_info)7391 static int pqi_register_scsi(struct pqi_ctrl_info *ctrl_info)
7392 {
7393 int rc;
7394 struct Scsi_Host *shost;
7395
7396 shost = scsi_host_alloc(&pqi_driver_template, sizeof(ctrl_info));
7397 if (!shost) {
7398 dev_err(&ctrl_info->pci_dev->dev, "scsi_host_alloc failed\n");
7399 return -ENOMEM;
7400 }
7401
7402 shost->io_port = 0;
7403 shost->n_io_port = 0;
7404 shost->this_id = -1;
7405 shost->max_channel = PQI_MAX_BUS;
7406 shost->max_cmd_len = MAX_COMMAND_SIZE;
7407 shost->max_lun = PQI_MAX_LUNS_PER_DEVICE;
7408 shost->max_lun = ~0;
7409 shost->max_id = ~0;
7410 shost->max_sectors = ctrl_info->max_sectors;
7411 shost->can_queue = ctrl_info->scsi_ml_can_queue;
7412 shost->cmd_per_lun = shost->can_queue;
7413 shost->sg_tablesize = ctrl_info->sg_tablesize;
7414 shost->transportt = pqi_sas_transport_template;
7415 shost->irq = pci_irq_vector(ctrl_info->pci_dev, 0);
7416 shost->unique_id = shost->irq;
7417 shost->nr_hw_queues = ctrl_info->num_queue_groups;
7418 shost->host_tagset = 1;
7419 shost->hostdata[0] = (unsigned long)ctrl_info;
7420
7421 rc = scsi_add_host(shost, &ctrl_info->pci_dev->dev);
7422 if (rc) {
7423 dev_err(&ctrl_info->pci_dev->dev, "scsi_add_host failed\n");
7424 goto free_host;
7425 }
7426
7427 rc = pqi_add_sas_host(shost, ctrl_info);
7428 if (rc) {
7429 dev_err(&ctrl_info->pci_dev->dev, "add SAS host failed\n");
7430 goto remove_host;
7431 }
7432
7433 ctrl_info->scsi_host = shost;
7434
7435 return 0;
7436
7437 remove_host:
7438 scsi_remove_host(shost);
7439 free_host:
7440 scsi_host_put(shost);
7441
7442 return rc;
7443 }
7444
pqi_unregister_scsi(struct pqi_ctrl_info * ctrl_info)7445 static void pqi_unregister_scsi(struct pqi_ctrl_info *ctrl_info)
7446 {
7447 struct Scsi_Host *shost;
7448
7449 pqi_delete_sas_host(ctrl_info);
7450
7451 shost = ctrl_info->scsi_host;
7452 if (!shost)
7453 return;
7454
7455 scsi_remove_host(shost);
7456 scsi_host_put(shost);
7457 }
7458
pqi_wait_for_pqi_reset_completion(struct pqi_ctrl_info * ctrl_info)7459 static int pqi_wait_for_pqi_reset_completion(struct pqi_ctrl_info *ctrl_info)
7460 {
7461 int rc = 0;
7462 struct pqi_device_registers __iomem *pqi_registers;
7463 unsigned long timeout;
7464 unsigned int timeout_msecs;
7465 union pqi_reset_register reset_reg;
7466
7467 pqi_registers = ctrl_info->pqi_registers;
7468 timeout_msecs = readw(&pqi_registers->max_reset_timeout) * 100;
7469 timeout = msecs_to_jiffies(timeout_msecs) + jiffies;
7470
7471 while (1) {
7472 msleep(PQI_RESET_POLL_INTERVAL_MSECS);
7473 reset_reg.all_bits = readl(&pqi_registers->device_reset);
7474 if (reset_reg.bits.reset_action == PQI_RESET_ACTION_COMPLETED)
7475 break;
7476 if (!sis_is_firmware_running(ctrl_info)) {
7477 rc = -ENXIO;
7478 break;
7479 }
7480 if (time_after(jiffies, timeout)) {
7481 rc = -ETIMEDOUT;
7482 break;
7483 }
7484 }
7485
7486 return rc;
7487 }
7488
pqi_reset(struct pqi_ctrl_info * ctrl_info)7489 static int pqi_reset(struct pqi_ctrl_info *ctrl_info)
7490 {
7491 int rc;
7492 union pqi_reset_register reset_reg;
7493
7494 if (ctrl_info->pqi_reset_quiesce_supported) {
7495 rc = sis_pqi_reset_quiesce(ctrl_info);
7496 if (rc) {
7497 dev_err(&ctrl_info->pci_dev->dev,
7498 "PQI reset failed during quiesce with error %d\n", rc);
7499 return rc;
7500 }
7501 }
7502
7503 reset_reg.all_bits = 0;
7504 reset_reg.bits.reset_type = PQI_RESET_TYPE_HARD_RESET;
7505 reset_reg.bits.reset_action = PQI_RESET_ACTION_RESET;
7506
7507 writel(reset_reg.all_bits, &ctrl_info->pqi_registers->device_reset);
7508
7509 rc = pqi_wait_for_pqi_reset_completion(ctrl_info);
7510 if (rc)
7511 dev_err(&ctrl_info->pci_dev->dev,
7512 "PQI reset failed with error %d\n", rc);
7513
7514 return rc;
7515 }
7516
pqi_get_ctrl_serial_number(struct pqi_ctrl_info * ctrl_info)7517 static int pqi_get_ctrl_serial_number(struct pqi_ctrl_info *ctrl_info)
7518 {
7519 int rc;
7520 struct bmic_sense_subsystem_info *sense_info;
7521
7522 sense_info = kzalloc(sizeof(*sense_info), GFP_KERNEL);
7523 if (!sense_info)
7524 return -ENOMEM;
7525
7526 rc = pqi_sense_subsystem_info(ctrl_info, sense_info);
7527 if (rc)
7528 goto out;
7529
7530 memcpy(ctrl_info->serial_number, sense_info->ctrl_serial_number,
7531 sizeof(sense_info->ctrl_serial_number));
7532 ctrl_info->serial_number[sizeof(sense_info->ctrl_serial_number)] = '\0';
7533
7534 out:
7535 kfree(sense_info);
7536
7537 return rc;
7538 }
7539
pqi_get_ctrl_product_details(struct pqi_ctrl_info * ctrl_info)7540 static int pqi_get_ctrl_product_details(struct pqi_ctrl_info *ctrl_info)
7541 {
7542 int rc;
7543 struct bmic_identify_controller *identify;
7544
7545 identify = kmalloc(sizeof(*identify), GFP_KERNEL);
7546 if (!identify)
7547 return -ENOMEM;
7548
7549 rc = pqi_identify_controller(ctrl_info, identify);
7550 if (rc)
7551 goto out;
7552
7553 if (get_unaligned_le32(&identify->extra_controller_flags) &
7554 BMIC_IDENTIFY_EXTRA_FLAGS_LONG_FW_VERSION_SUPPORTED) {
7555 memcpy(ctrl_info->firmware_version,
7556 identify->firmware_version_long,
7557 sizeof(identify->firmware_version_long));
7558 } else {
7559 memcpy(ctrl_info->firmware_version,
7560 identify->firmware_version_short,
7561 sizeof(identify->firmware_version_short));
7562 ctrl_info->firmware_version
7563 [sizeof(identify->firmware_version_short)] = '\0';
7564 snprintf(ctrl_info->firmware_version +
7565 strlen(ctrl_info->firmware_version),
7566 sizeof(ctrl_info->firmware_version) -
7567 sizeof(identify->firmware_version_short),
7568 "-%u",
7569 get_unaligned_le16(&identify->firmware_build_number));
7570 }
7571
7572 memcpy(ctrl_info->model, identify->product_id,
7573 sizeof(identify->product_id));
7574 ctrl_info->model[sizeof(identify->product_id)] = '\0';
7575
7576 memcpy(ctrl_info->vendor, identify->vendor_id,
7577 sizeof(identify->vendor_id));
7578 ctrl_info->vendor[sizeof(identify->vendor_id)] = '\0';
7579
7580 dev_info(&ctrl_info->pci_dev->dev,
7581 "Firmware version: %s\n", ctrl_info->firmware_version);
7582
7583 out:
7584 kfree(identify);
7585
7586 return rc;
7587 }
7588
7589 struct pqi_config_table_section_info {
7590 struct pqi_ctrl_info *ctrl_info;
7591 void *section;
7592 u32 section_offset;
7593 void __iomem *section_iomem_addr;
7594 };
7595
pqi_is_firmware_feature_supported(struct pqi_config_table_firmware_features * firmware_features,unsigned int bit_position)7596 static inline bool pqi_is_firmware_feature_supported(
7597 struct pqi_config_table_firmware_features *firmware_features,
7598 unsigned int bit_position)
7599 {
7600 unsigned int byte_index;
7601
7602 byte_index = bit_position / BITS_PER_BYTE;
7603
7604 if (byte_index >= le16_to_cpu(firmware_features->num_elements))
7605 return false;
7606
7607 return firmware_features->features_supported[byte_index] &
7608 (1 << (bit_position % BITS_PER_BYTE)) ? true : false;
7609 }
7610
pqi_is_firmware_feature_enabled(struct pqi_config_table_firmware_features * firmware_features,void __iomem * firmware_features_iomem_addr,unsigned int bit_position)7611 static inline bool pqi_is_firmware_feature_enabled(
7612 struct pqi_config_table_firmware_features *firmware_features,
7613 void __iomem *firmware_features_iomem_addr,
7614 unsigned int bit_position)
7615 {
7616 unsigned int byte_index;
7617 u8 __iomem *features_enabled_iomem_addr;
7618
7619 byte_index = (bit_position / BITS_PER_BYTE) +
7620 (le16_to_cpu(firmware_features->num_elements) * 2);
7621
7622 features_enabled_iomem_addr = firmware_features_iomem_addr +
7623 offsetof(struct pqi_config_table_firmware_features,
7624 features_supported) + byte_index;
7625
7626 return *((__force u8 *)features_enabled_iomem_addr) &
7627 (1 << (bit_position % BITS_PER_BYTE)) ? true : false;
7628 }
7629
pqi_request_firmware_feature(struct pqi_config_table_firmware_features * firmware_features,unsigned int bit_position)7630 static inline void pqi_request_firmware_feature(
7631 struct pqi_config_table_firmware_features *firmware_features,
7632 unsigned int bit_position)
7633 {
7634 unsigned int byte_index;
7635
7636 byte_index = (bit_position / BITS_PER_BYTE) +
7637 le16_to_cpu(firmware_features->num_elements);
7638
7639 firmware_features->features_supported[byte_index] |=
7640 (1 << (bit_position % BITS_PER_BYTE));
7641 }
7642
pqi_config_table_update(struct pqi_ctrl_info * ctrl_info,u16 first_section,u16 last_section)7643 static int pqi_config_table_update(struct pqi_ctrl_info *ctrl_info,
7644 u16 first_section, u16 last_section)
7645 {
7646 struct pqi_vendor_general_request request;
7647
7648 memset(&request, 0, sizeof(request));
7649
7650 request.header.iu_type = PQI_REQUEST_IU_VENDOR_GENERAL;
7651 put_unaligned_le16(sizeof(request) - PQI_REQUEST_HEADER_LENGTH,
7652 &request.header.iu_length);
7653 put_unaligned_le16(PQI_VENDOR_GENERAL_CONFIG_TABLE_UPDATE,
7654 &request.function_code);
7655 put_unaligned_le16(first_section,
7656 &request.data.config_table_update.first_section);
7657 put_unaligned_le16(last_section,
7658 &request.data.config_table_update.last_section);
7659
7660 return pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0, NULL);
7661 }
7662
pqi_enable_firmware_features(struct pqi_ctrl_info * ctrl_info,struct pqi_config_table_firmware_features * firmware_features,void __iomem * firmware_features_iomem_addr)7663 static int pqi_enable_firmware_features(struct pqi_ctrl_info *ctrl_info,
7664 struct pqi_config_table_firmware_features *firmware_features,
7665 void __iomem *firmware_features_iomem_addr)
7666 {
7667 void *features_requested;
7668 void __iomem *features_requested_iomem_addr;
7669 void __iomem *host_max_known_feature_iomem_addr;
7670
7671 features_requested = firmware_features->features_supported +
7672 le16_to_cpu(firmware_features->num_elements);
7673
7674 features_requested_iomem_addr = firmware_features_iomem_addr +
7675 (features_requested - (void *)firmware_features);
7676
7677 memcpy_toio(features_requested_iomem_addr, features_requested,
7678 le16_to_cpu(firmware_features->num_elements));
7679
7680 if (pqi_is_firmware_feature_supported(firmware_features,
7681 PQI_FIRMWARE_FEATURE_MAX_KNOWN_FEATURE)) {
7682 host_max_known_feature_iomem_addr =
7683 features_requested_iomem_addr +
7684 (le16_to_cpu(firmware_features->num_elements) * 2) +
7685 sizeof(__le16);
7686 writew(PQI_FIRMWARE_FEATURE_MAXIMUM,
7687 host_max_known_feature_iomem_addr);
7688 }
7689
7690 return pqi_config_table_update(ctrl_info,
7691 PQI_CONFIG_TABLE_SECTION_FIRMWARE_FEATURES,
7692 PQI_CONFIG_TABLE_SECTION_FIRMWARE_FEATURES);
7693 }
7694
7695 struct pqi_firmware_feature {
7696 char *feature_name;
7697 unsigned int feature_bit;
7698 bool supported;
7699 bool enabled;
7700 void (*feature_status)(struct pqi_ctrl_info *ctrl_info,
7701 struct pqi_firmware_feature *firmware_feature);
7702 };
7703
pqi_firmware_feature_status(struct pqi_ctrl_info * ctrl_info,struct pqi_firmware_feature * firmware_feature)7704 static void pqi_firmware_feature_status(struct pqi_ctrl_info *ctrl_info,
7705 struct pqi_firmware_feature *firmware_feature)
7706 {
7707 if (!firmware_feature->supported) {
7708 dev_info(&ctrl_info->pci_dev->dev, "%s not supported by controller\n",
7709 firmware_feature->feature_name);
7710 return;
7711 }
7712
7713 if (firmware_feature->enabled) {
7714 dev_info(&ctrl_info->pci_dev->dev,
7715 "%s enabled\n", firmware_feature->feature_name);
7716 return;
7717 }
7718
7719 dev_err(&ctrl_info->pci_dev->dev, "failed to enable %s\n",
7720 firmware_feature->feature_name);
7721 }
7722
pqi_ctrl_update_feature_flags(struct pqi_ctrl_info * ctrl_info,struct pqi_firmware_feature * firmware_feature)7723 static void pqi_ctrl_update_feature_flags(struct pqi_ctrl_info *ctrl_info,
7724 struct pqi_firmware_feature *firmware_feature)
7725 {
7726 switch (firmware_feature->feature_bit) {
7727 case PQI_FIRMWARE_FEATURE_RAID_1_WRITE_BYPASS:
7728 ctrl_info->enable_r1_writes = firmware_feature->enabled;
7729 break;
7730 case PQI_FIRMWARE_FEATURE_RAID_5_WRITE_BYPASS:
7731 ctrl_info->enable_r5_writes = firmware_feature->enabled;
7732 break;
7733 case PQI_FIRMWARE_FEATURE_RAID_6_WRITE_BYPASS:
7734 ctrl_info->enable_r6_writes = firmware_feature->enabled;
7735 break;
7736 case PQI_FIRMWARE_FEATURE_SOFT_RESET_HANDSHAKE:
7737 ctrl_info->soft_reset_handshake_supported =
7738 firmware_feature->enabled &&
7739 pqi_read_soft_reset_status(ctrl_info);
7740 break;
7741 case PQI_FIRMWARE_FEATURE_RAID_IU_TIMEOUT:
7742 ctrl_info->raid_iu_timeout_supported = firmware_feature->enabled;
7743 break;
7744 case PQI_FIRMWARE_FEATURE_TMF_IU_TIMEOUT:
7745 ctrl_info->tmf_iu_timeout_supported = firmware_feature->enabled;
7746 break;
7747 case PQI_FIRMWARE_FEATURE_FW_TRIAGE:
7748 ctrl_info->firmware_triage_supported = firmware_feature->enabled;
7749 pqi_save_fw_triage_setting(ctrl_info, firmware_feature->enabled);
7750 break;
7751 case PQI_FIRMWARE_FEATURE_RPL_EXTENDED_FORMAT_4_5:
7752 ctrl_info->rpl_extended_format_4_5_supported = firmware_feature->enabled;
7753 break;
7754 case PQI_FIRMWARE_FEATURE_MULTI_LUN_DEVICE_SUPPORT:
7755 ctrl_info->multi_lun_device_supported = firmware_feature->enabled;
7756 break;
7757 }
7758
7759 pqi_firmware_feature_status(ctrl_info, firmware_feature);
7760 }
7761
pqi_firmware_feature_update(struct pqi_ctrl_info * ctrl_info,struct pqi_firmware_feature * firmware_feature)7762 static inline void pqi_firmware_feature_update(struct pqi_ctrl_info *ctrl_info,
7763 struct pqi_firmware_feature *firmware_feature)
7764 {
7765 if (firmware_feature->feature_status)
7766 firmware_feature->feature_status(ctrl_info, firmware_feature);
7767 }
7768
7769 static DEFINE_MUTEX(pqi_firmware_features_mutex);
7770
7771 static struct pqi_firmware_feature pqi_firmware_features[] = {
7772 {
7773 .feature_name = "Online Firmware Activation",
7774 .feature_bit = PQI_FIRMWARE_FEATURE_OFA,
7775 .feature_status = pqi_firmware_feature_status,
7776 },
7777 {
7778 .feature_name = "Serial Management Protocol",
7779 .feature_bit = PQI_FIRMWARE_FEATURE_SMP,
7780 .feature_status = pqi_firmware_feature_status,
7781 },
7782 {
7783 .feature_name = "Maximum Known Feature",
7784 .feature_bit = PQI_FIRMWARE_FEATURE_MAX_KNOWN_FEATURE,
7785 .feature_status = pqi_firmware_feature_status,
7786 },
7787 {
7788 .feature_name = "RAID 0 Read Bypass",
7789 .feature_bit = PQI_FIRMWARE_FEATURE_RAID_0_READ_BYPASS,
7790 .feature_status = pqi_firmware_feature_status,
7791 },
7792 {
7793 .feature_name = "RAID 1 Read Bypass",
7794 .feature_bit = PQI_FIRMWARE_FEATURE_RAID_1_READ_BYPASS,
7795 .feature_status = pqi_firmware_feature_status,
7796 },
7797 {
7798 .feature_name = "RAID 5 Read Bypass",
7799 .feature_bit = PQI_FIRMWARE_FEATURE_RAID_5_READ_BYPASS,
7800 .feature_status = pqi_firmware_feature_status,
7801 },
7802 {
7803 .feature_name = "RAID 6 Read Bypass",
7804 .feature_bit = PQI_FIRMWARE_FEATURE_RAID_6_READ_BYPASS,
7805 .feature_status = pqi_firmware_feature_status,
7806 },
7807 {
7808 .feature_name = "RAID 0 Write Bypass",
7809 .feature_bit = PQI_FIRMWARE_FEATURE_RAID_0_WRITE_BYPASS,
7810 .feature_status = pqi_firmware_feature_status,
7811 },
7812 {
7813 .feature_name = "RAID 1 Write Bypass",
7814 .feature_bit = PQI_FIRMWARE_FEATURE_RAID_1_WRITE_BYPASS,
7815 .feature_status = pqi_ctrl_update_feature_flags,
7816 },
7817 {
7818 .feature_name = "RAID 5 Write Bypass",
7819 .feature_bit = PQI_FIRMWARE_FEATURE_RAID_5_WRITE_BYPASS,
7820 .feature_status = pqi_ctrl_update_feature_flags,
7821 },
7822 {
7823 .feature_name = "RAID 6 Write Bypass",
7824 .feature_bit = PQI_FIRMWARE_FEATURE_RAID_6_WRITE_BYPASS,
7825 .feature_status = pqi_ctrl_update_feature_flags,
7826 },
7827 {
7828 .feature_name = "New Soft Reset Handshake",
7829 .feature_bit = PQI_FIRMWARE_FEATURE_SOFT_RESET_HANDSHAKE,
7830 .feature_status = pqi_ctrl_update_feature_flags,
7831 },
7832 {
7833 .feature_name = "RAID IU Timeout",
7834 .feature_bit = PQI_FIRMWARE_FEATURE_RAID_IU_TIMEOUT,
7835 .feature_status = pqi_ctrl_update_feature_flags,
7836 },
7837 {
7838 .feature_name = "TMF IU Timeout",
7839 .feature_bit = PQI_FIRMWARE_FEATURE_TMF_IU_TIMEOUT,
7840 .feature_status = pqi_ctrl_update_feature_flags,
7841 },
7842 {
7843 .feature_name = "RAID Bypass on encrypted logical volumes on NVMe",
7844 .feature_bit = PQI_FIRMWARE_FEATURE_RAID_BYPASS_ON_ENCRYPTED_NVME,
7845 .feature_status = pqi_firmware_feature_status,
7846 },
7847 {
7848 .feature_name = "Firmware Triage",
7849 .feature_bit = PQI_FIRMWARE_FEATURE_FW_TRIAGE,
7850 .feature_status = pqi_ctrl_update_feature_flags,
7851 },
7852 {
7853 .feature_name = "RPL Extended Formats 4 and 5",
7854 .feature_bit = PQI_FIRMWARE_FEATURE_RPL_EXTENDED_FORMAT_4_5,
7855 .feature_status = pqi_ctrl_update_feature_flags,
7856 },
7857 {
7858 .feature_name = "Multi-LUN Target",
7859 .feature_bit = PQI_FIRMWARE_FEATURE_MULTI_LUN_DEVICE_SUPPORT,
7860 .feature_status = pqi_ctrl_update_feature_flags,
7861 },
7862 };
7863
pqi_process_firmware_features(struct pqi_config_table_section_info * section_info)7864 static void pqi_process_firmware_features(
7865 struct pqi_config_table_section_info *section_info)
7866 {
7867 int rc;
7868 struct pqi_ctrl_info *ctrl_info;
7869 struct pqi_config_table_firmware_features *firmware_features;
7870 void __iomem *firmware_features_iomem_addr;
7871 unsigned int i;
7872 unsigned int num_features_supported;
7873
7874 ctrl_info = section_info->ctrl_info;
7875 firmware_features = section_info->section;
7876 firmware_features_iomem_addr = section_info->section_iomem_addr;
7877
7878 for (i = 0, num_features_supported = 0;
7879 i < ARRAY_SIZE(pqi_firmware_features); i++) {
7880 if (pqi_is_firmware_feature_supported(firmware_features,
7881 pqi_firmware_features[i].feature_bit)) {
7882 pqi_firmware_features[i].supported = true;
7883 num_features_supported++;
7884 } else {
7885 pqi_firmware_feature_update(ctrl_info,
7886 &pqi_firmware_features[i]);
7887 }
7888 }
7889
7890 if (num_features_supported == 0)
7891 return;
7892
7893 for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) {
7894 if (!pqi_firmware_features[i].supported)
7895 continue;
7896 pqi_request_firmware_feature(firmware_features,
7897 pqi_firmware_features[i].feature_bit);
7898 }
7899
7900 rc = pqi_enable_firmware_features(ctrl_info, firmware_features,
7901 firmware_features_iomem_addr);
7902 if (rc) {
7903 dev_err(&ctrl_info->pci_dev->dev,
7904 "failed to enable firmware features in PQI configuration table\n");
7905 for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) {
7906 if (!pqi_firmware_features[i].supported)
7907 continue;
7908 pqi_firmware_feature_update(ctrl_info,
7909 &pqi_firmware_features[i]);
7910 }
7911 return;
7912 }
7913
7914 for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) {
7915 if (!pqi_firmware_features[i].supported)
7916 continue;
7917 if (pqi_is_firmware_feature_enabled(firmware_features,
7918 firmware_features_iomem_addr,
7919 pqi_firmware_features[i].feature_bit)) {
7920 pqi_firmware_features[i].enabled = true;
7921 }
7922 pqi_firmware_feature_update(ctrl_info,
7923 &pqi_firmware_features[i]);
7924 }
7925 }
7926
pqi_init_firmware_features(void)7927 static void pqi_init_firmware_features(void)
7928 {
7929 unsigned int i;
7930
7931 for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) {
7932 pqi_firmware_features[i].supported = false;
7933 pqi_firmware_features[i].enabled = false;
7934 }
7935 }
7936
pqi_process_firmware_features_section(struct pqi_config_table_section_info * section_info)7937 static void pqi_process_firmware_features_section(
7938 struct pqi_config_table_section_info *section_info)
7939 {
7940 mutex_lock(&pqi_firmware_features_mutex);
7941 pqi_init_firmware_features();
7942 pqi_process_firmware_features(section_info);
7943 mutex_unlock(&pqi_firmware_features_mutex);
7944 }
7945
7946 /*
7947 * Reset all controller settings that can be initialized during the processing
7948 * of the PQI Configuration Table.
7949 */
7950
pqi_ctrl_reset_config(struct pqi_ctrl_info * ctrl_info)7951 static void pqi_ctrl_reset_config(struct pqi_ctrl_info *ctrl_info)
7952 {
7953 ctrl_info->heartbeat_counter = NULL;
7954 ctrl_info->soft_reset_status = NULL;
7955 ctrl_info->soft_reset_handshake_supported = false;
7956 ctrl_info->enable_r1_writes = false;
7957 ctrl_info->enable_r5_writes = false;
7958 ctrl_info->enable_r6_writes = false;
7959 ctrl_info->raid_iu_timeout_supported = false;
7960 ctrl_info->tmf_iu_timeout_supported = false;
7961 ctrl_info->firmware_triage_supported = false;
7962 ctrl_info->rpl_extended_format_4_5_supported = false;
7963 ctrl_info->multi_lun_device_supported = false;
7964 }
7965
pqi_process_config_table(struct pqi_ctrl_info * ctrl_info)7966 static int pqi_process_config_table(struct pqi_ctrl_info *ctrl_info)
7967 {
7968 u32 table_length;
7969 u32 section_offset;
7970 bool firmware_feature_section_present;
7971 void __iomem *table_iomem_addr;
7972 struct pqi_config_table *config_table;
7973 struct pqi_config_table_section_header *section;
7974 struct pqi_config_table_section_info section_info;
7975 struct pqi_config_table_section_info feature_section_info;
7976
7977 table_length = ctrl_info->config_table_length;
7978 if (table_length == 0)
7979 return 0;
7980
7981 config_table = kmalloc(table_length, GFP_KERNEL);
7982 if (!config_table) {
7983 dev_err(&ctrl_info->pci_dev->dev,
7984 "failed to allocate memory for PQI configuration table\n");
7985 return -ENOMEM;
7986 }
7987
7988 /*
7989 * Copy the config table contents from I/O memory space into the
7990 * temporary buffer.
7991 */
7992 table_iomem_addr = ctrl_info->iomem_base + ctrl_info->config_table_offset;
7993 memcpy_fromio(config_table, table_iomem_addr, table_length);
7994
7995 firmware_feature_section_present = false;
7996 section_info.ctrl_info = ctrl_info;
7997 section_offset = get_unaligned_le32(&config_table->first_section_offset);
7998
7999 while (section_offset) {
8000 section = (void *)config_table + section_offset;
8001
8002 section_info.section = section;
8003 section_info.section_offset = section_offset;
8004 section_info.section_iomem_addr = table_iomem_addr + section_offset;
8005
8006 switch (get_unaligned_le16(§ion->section_id)) {
8007 case PQI_CONFIG_TABLE_SECTION_FIRMWARE_FEATURES:
8008 firmware_feature_section_present = true;
8009 feature_section_info = section_info;
8010 break;
8011 case PQI_CONFIG_TABLE_SECTION_HEARTBEAT:
8012 if (pqi_disable_heartbeat)
8013 dev_warn(&ctrl_info->pci_dev->dev,
8014 "heartbeat disabled by module parameter\n");
8015 else
8016 ctrl_info->heartbeat_counter =
8017 table_iomem_addr +
8018 section_offset +
8019 offsetof(struct pqi_config_table_heartbeat,
8020 heartbeat_counter);
8021 break;
8022 case PQI_CONFIG_TABLE_SECTION_SOFT_RESET:
8023 ctrl_info->soft_reset_status =
8024 table_iomem_addr +
8025 section_offset +
8026 offsetof(struct pqi_config_table_soft_reset,
8027 soft_reset_status);
8028 break;
8029 }
8030
8031 section_offset = get_unaligned_le16(§ion->next_section_offset);
8032 }
8033
8034 /*
8035 * We process the firmware feature section after all other sections
8036 * have been processed so that the feature bit callbacks can take
8037 * into account the settings configured by other sections.
8038 */
8039 if (firmware_feature_section_present)
8040 pqi_process_firmware_features_section(&feature_section_info);
8041
8042 kfree(config_table);
8043
8044 return 0;
8045 }
8046
8047 /* Switches the controller from PQI mode back into SIS mode. */
8048
pqi_revert_to_sis_mode(struct pqi_ctrl_info * ctrl_info)8049 static int pqi_revert_to_sis_mode(struct pqi_ctrl_info *ctrl_info)
8050 {
8051 int rc;
8052
8053 pqi_change_irq_mode(ctrl_info, IRQ_MODE_NONE);
8054 rc = pqi_reset(ctrl_info);
8055 if (rc)
8056 return rc;
8057 rc = sis_reenable_sis_mode(ctrl_info);
8058 if (rc) {
8059 dev_err(&ctrl_info->pci_dev->dev,
8060 "re-enabling SIS mode failed with error %d\n", rc);
8061 return rc;
8062 }
8063 pqi_save_ctrl_mode(ctrl_info, SIS_MODE);
8064
8065 return 0;
8066 }
8067
8068 /*
8069 * If the controller isn't already in SIS mode, this function forces it into
8070 * SIS mode.
8071 */
8072
pqi_force_sis_mode(struct pqi_ctrl_info * ctrl_info)8073 static int pqi_force_sis_mode(struct pqi_ctrl_info *ctrl_info)
8074 {
8075 if (!sis_is_firmware_running(ctrl_info))
8076 return -ENXIO;
8077
8078 if (pqi_get_ctrl_mode(ctrl_info) == SIS_MODE)
8079 return 0;
8080
8081 if (sis_is_kernel_up(ctrl_info)) {
8082 pqi_save_ctrl_mode(ctrl_info, SIS_MODE);
8083 return 0;
8084 }
8085
8086 return pqi_revert_to_sis_mode(ctrl_info);
8087 }
8088
pqi_perform_lockup_action(void)8089 static void pqi_perform_lockup_action(void)
8090 {
8091 switch (pqi_lockup_action) {
8092 case PANIC:
8093 panic("FATAL: Smart Family Controller lockup detected");
8094 break;
8095 case REBOOT:
8096 emergency_restart();
8097 break;
8098 case NONE:
8099 default:
8100 break;
8101 }
8102 }
8103
pqi_ctrl_init(struct pqi_ctrl_info * ctrl_info)8104 static int pqi_ctrl_init(struct pqi_ctrl_info *ctrl_info)
8105 {
8106 int rc;
8107 u32 product_id;
8108
8109 if (reset_devices) {
8110 if (pqi_is_fw_triage_supported(ctrl_info)) {
8111 rc = sis_wait_for_fw_triage_completion(ctrl_info);
8112 if (rc)
8113 return rc;
8114 }
8115 sis_soft_reset(ctrl_info);
8116 ssleep(PQI_POST_RESET_DELAY_SECS);
8117 } else {
8118 rc = pqi_force_sis_mode(ctrl_info);
8119 if (rc)
8120 return rc;
8121 }
8122
8123 /*
8124 * Wait until the controller is ready to start accepting SIS
8125 * commands.
8126 */
8127 rc = sis_wait_for_ctrl_ready(ctrl_info);
8128 if (rc) {
8129 if (reset_devices) {
8130 dev_err(&ctrl_info->pci_dev->dev,
8131 "kdump init failed with error %d\n", rc);
8132 pqi_lockup_action = REBOOT;
8133 pqi_perform_lockup_action();
8134 }
8135 return rc;
8136 }
8137
8138 /*
8139 * Get the controller properties. This allows us to determine
8140 * whether or not it supports PQI mode.
8141 */
8142 rc = sis_get_ctrl_properties(ctrl_info);
8143 if (rc) {
8144 dev_err(&ctrl_info->pci_dev->dev,
8145 "error obtaining controller properties\n");
8146 return rc;
8147 }
8148
8149 rc = sis_get_pqi_capabilities(ctrl_info);
8150 if (rc) {
8151 dev_err(&ctrl_info->pci_dev->dev,
8152 "error obtaining controller capabilities\n");
8153 return rc;
8154 }
8155
8156 product_id = sis_get_product_id(ctrl_info);
8157 ctrl_info->product_id = (u8)product_id;
8158 ctrl_info->product_revision = (u8)(product_id >> 8);
8159
8160 if (reset_devices) {
8161 if (ctrl_info->max_outstanding_requests >
8162 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP)
8163 ctrl_info->max_outstanding_requests =
8164 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP;
8165 } else {
8166 if (ctrl_info->max_outstanding_requests >
8167 PQI_MAX_OUTSTANDING_REQUESTS)
8168 ctrl_info->max_outstanding_requests =
8169 PQI_MAX_OUTSTANDING_REQUESTS;
8170 }
8171
8172 pqi_calculate_io_resources(ctrl_info);
8173
8174 rc = pqi_alloc_error_buffer(ctrl_info);
8175 if (rc) {
8176 dev_err(&ctrl_info->pci_dev->dev,
8177 "failed to allocate PQI error buffer\n");
8178 return rc;
8179 }
8180
8181 /*
8182 * If the function we are about to call succeeds, the
8183 * controller will transition from legacy SIS mode
8184 * into PQI mode.
8185 */
8186 rc = sis_init_base_struct_addr(ctrl_info);
8187 if (rc) {
8188 dev_err(&ctrl_info->pci_dev->dev,
8189 "error initializing PQI mode\n");
8190 return rc;
8191 }
8192
8193 /* Wait for the controller to complete the SIS -> PQI transition. */
8194 rc = pqi_wait_for_pqi_mode_ready(ctrl_info);
8195 if (rc) {
8196 dev_err(&ctrl_info->pci_dev->dev,
8197 "transition to PQI mode failed\n");
8198 return rc;
8199 }
8200
8201 /* From here on, we are running in PQI mode. */
8202 ctrl_info->pqi_mode_enabled = true;
8203 pqi_save_ctrl_mode(ctrl_info, PQI_MODE);
8204
8205 rc = pqi_alloc_admin_queues(ctrl_info);
8206 if (rc) {
8207 dev_err(&ctrl_info->pci_dev->dev,
8208 "failed to allocate admin queues\n");
8209 return rc;
8210 }
8211
8212 rc = pqi_create_admin_queues(ctrl_info);
8213 if (rc) {
8214 dev_err(&ctrl_info->pci_dev->dev,
8215 "error creating admin queues\n");
8216 return rc;
8217 }
8218
8219 rc = pqi_report_device_capability(ctrl_info);
8220 if (rc) {
8221 dev_err(&ctrl_info->pci_dev->dev,
8222 "obtaining device capability failed\n");
8223 return rc;
8224 }
8225
8226 rc = pqi_validate_device_capability(ctrl_info);
8227 if (rc)
8228 return rc;
8229
8230 pqi_calculate_queue_resources(ctrl_info);
8231
8232 rc = pqi_enable_msix_interrupts(ctrl_info);
8233 if (rc)
8234 return rc;
8235
8236 if (ctrl_info->num_msix_vectors_enabled < ctrl_info->num_queue_groups) {
8237 ctrl_info->max_msix_vectors =
8238 ctrl_info->num_msix_vectors_enabled;
8239 pqi_calculate_queue_resources(ctrl_info);
8240 }
8241
8242 rc = pqi_alloc_io_resources(ctrl_info);
8243 if (rc)
8244 return rc;
8245
8246 rc = pqi_alloc_operational_queues(ctrl_info);
8247 if (rc) {
8248 dev_err(&ctrl_info->pci_dev->dev,
8249 "failed to allocate operational queues\n");
8250 return rc;
8251 }
8252
8253 pqi_init_operational_queues(ctrl_info);
8254
8255 rc = pqi_create_queues(ctrl_info);
8256 if (rc)
8257 return rc;
8258
8259 rc = pqi_request_irqs(ctrl_info);
8260 if (rc)
8261 return rc;
8262
8263 pqi_change_irq_mode(ctrl_info, IRQ_MODE_MSIX);
8264
8265 ctrl_info->controller_online = true;
8266
8267 rc = pqi_process_config_table(ctrl_info);
8268 if (rc)
8269 return rc;
8270
8271 pqi_start_heartbeat_timer(ctrl_info);
8272
8273 if (ctrl_info->enable_r5_writes || ctrl_info->enable_r6_writes) {
8274 rc = pqi_get_advanced_raid_bypass_config(ctrl_info);
8275 if (rc) { /* Supported features not returned correctly. */
8276 dev_err(&ctrl_info->pci_dev->dev,
8277 "error obtaining advanced RAID bypass configuration\n");
8278 return rc;
8279 }
8280 ctrl_info->ciss_report_log_flags |=
8281 CISS_REPORT_LOG_FLAG_DRIVE_TYPE_MIX;
8282 }
8283
8284 rc = pqi_enable_events(ctrl_info);
8285 if (rc) {
8286 dev_err(&ctrl_info->pci_dev->dev,
8287 "error enabling events\n");
8288 return rc;
8289 }
8290
8291 /* Register with the SCSI subsystem. */
8292 rc = pqi_register_scsi(ctrl_info);
8293 if (rc)
8294 return rc;
8295
8296 rc = pqi_get_ctrl_product_details(ctrl_info);
8297 if (rc) {
8298 dev_err(&ctrl_info->pci_dev->dev,
8299 "error obtaining product details\n");
8300 return rc;
8301 }
8302
8303 rc = pqi_get_ctrl_serial_number(ctrl_info);
8304 if (rc) {
8305 dev_err(&ctrl_info->pci_dev->dev,
8306 "error obtaining ctrl serial number\n");
8307 return rc;
8308 }
8309
8310 rc = pqi_set_diag_rescan(ctrl_info);
8311 if (rc) {
8312 dev_err(&ctrl_info->pci_dev->dev,
8313 "error enabling multi-lun rescan\n");
8314 return rc;
8315 }
8316
8317 rc = pqi_write_driver_version_to_host_wellness(ctrl_info);
8318 if (rc) {
8319 dev_err(&ctrl_info->pci_dev->dev,
8320 "error updating host wellness\n");
8321 return rc;
8322 }
8323
8324 pqi_schedule_update_time_worker(ctrl_info);
8325
8326 pqi_scan_scsi_devices(ctrl_info);
8327
8328 return 0;
8329 }
8330
pqi_reinit_queues(struct pqi_ctrl_info * ctrl_info)8331 static void pqi_reinit_queues(struct pqi_ctrl_info *ctrl_info)
8332 {
8333 unsigned int i;
8334 struct pqi_admin_queues *admin_queues;
8335 struct pqi_event_queue *event_queue;
8336
8337 admin_queues = &ctrl_info->admin_queues;
8338 admin_queues->iq_pi_copy = 0;
8339 admin_queues->oq_ci_copy = 0;
8340 writel(0, admin_queues->oq_pi);
8341
8342 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
8343 ctrl_info->queue_groups[i].iq_pi_copy[RAID_PATH] = 0;
8344 ctrl_info->queue_groups[i].iq_pi_copy[AIO_PATH] = 0;
8345 ctrl_info->queue_groups[i].oq_ci_copy = 0;
8346
8347 writel(0, ctrl_info->queue_groups[i].iq_ci[RAID_PATH]);
8348 writel(0, ctrl_info->queue_groups[i].iq_ci[AIO_PATH]);
8349 writel(0, ctrl_info->queue_groups[i].oq_pi);
8350 }
8351
8352 event_queue = &ctrl_info->event_queue;
8353 writel(0, event_queue->oq_pi);
8354 event_queue->oq_ci_copy = 0;
8355 }
8356
pqi_ctrl_init_resume(struct pqi_ctrl_info * ctrl_info)8357 static int pqi_ctrl_init_resume(struct pqi_ctrl_info *ctrl_info)
8358 {
8359 int rc;
8360
8361 rc = pqi_force_sis_mode(ctrl_info);
8362 if (rc)
8363 return rc;
8364
8365 /*
8366 * Wait until the controller is ready to start accepting SIS
8367 * commands.
8368 */
8369 rc = sis_wait_for_ctrl_ready_resume(ctrl_info);
8370 if (rc)
8371 return rc;
8372
8373 /*
8374 * Get the controller properties. This allows us to determine
8375 * whether or not it supports PQI mode.
8376 */
8377 rc = sis_get_ctrl_properties(ctrl_info);
8378 if (rc) {
8379 dev_err(&ctrl_info->pci_dev->dev,
8380 "error obtaining controller properties\n");
8381 return rc;
8382 }
8383
8384 rc = sis_get_pqi_capabilities(ctrl_info);
8385 if (rc) {
8386 dev_err(&ctrl_info->pci_dev->dev,
8387 "error obtaining controller capabilities\n");
8388 return rc;
8389 }
8390
8391 /*
8392 * If the function we are about to call succeeds, the
8393 * controller will transition from legacy SIS mode
8394 * into PQI mode.
8395 */
8396 rc = sis_init_base_struct_addr(ctrl_info);
8397 if (rc) {
8398 dev_err(&ctrl_info->pci_dev->dev,
8399 "error initializing PQI mode\n");
8400 return rc;
8401 }
8402
8403 /* Wait for the controller to complete the SIS -> PQI transition. */
8404 rc = pqi_wait_for_pqi_mode_ready(ctrl_info);
8405 if (rc) {
8406 dev_err(&ctrl_info->pci_dev->dev,
8407 "transition to PQI mode failed\n");
8408 return rc;
8409 }
8410
8411 /* From here on, we are running in PQI mode. */
8412 ctrl_info->pqi_mode_enabled = true;
8413 pqi_save_ctrl_mode(ctrl_info, PQI_MODE);
8414
8415 pqi_reinit_queues(ctrl_info);
8416
8417 rc = pqi_create_admin_queues(ctrl_info);
8418 if (rc) {
8419 dev_err(&ctrl_info->pci_dev->dev,
8420 "error creating admin queues\n");
8421 return rc;
8422 }
8423
8424 rc = pqi_create_queues(ctrl_info);
8425 if (rc)
8426 return rc;
8427
8428 pqi_change_irq_mode(ctrl_info, IRQ_MODE_MSIX);
8429
8430 ctrl_info->controller_online = true;
8431 pqi_ctrl_unblock_requests(ctrl_info);
8432
8433 pqi_ctrl_reset_config(ctrl_info);
8434
8435 rc = pqi_process_config_table(ctrl_info);
8436 if (rc)
8437 return rc;
8438
8439 pqi_start_heartbeat_timer(ctrl_info);
8440
8441 if (ctrl_info->enable_r5_writes || ctrl_info->enable_r6_writes) {
8442 rc = pqi_get_advanced_raid_bypass_config(ctrl_info);
8443 if (rc) {
8444 dev_err(&ctrl_info->pci_dev->dev,
8445 "error obtaining advanced RAID bypass configuration\n");
8446 return rc;
8447 }
8448 ctrl_info->ciss_report_log_flags |=
8449 CISS_REPORT_LOG_FLAG_DRIVE_TYPE_MIX;
8450 }
8451
8452 rc = pqi_enable_events(ctrl_info);
8453 if (rc) {
8454 dev_err(&ctrl_info->pci_dev->dev,
8455 "error enabling events\n");
8456 return rc;
8457 }
8458
8459 rc = pqi_get_ctrl_product_details(ctrl_info);
8460 if (rc) {
8461 dev_err(&ctrl_info->pci_dev->dev,
8462 "error obtaining product details\n");
8463 return rc;
8464 }
8465
8466 rc = pqi_set_diag_rescan(ctrl_info);
8467 if (rc) {
8468 dev_err(&ctrl_info->pci_dev->dev,
8469 "error enabling multi-lun rescan\n");
8470 return rc;
8471 }
8472
8473 rc = pqi_write_driver_version_to_host_wellness(ctrl_info);
8474 if (rc) {
8475 dev_err(&ctrl_info->pci_dev->dev,
8476 "error updating host wellness\n");
8477 return rc;
8478 }
8479
8480 if (pqi_ofa_in_progress(ctrl_info))
8481 pqi_ctrl_unblock_scan(ctrl_info);
8482
8483 pqi_scan_scsi_devices(ctrl_info);
8484
8485 return 0;
8486 }
8487
pqi_set_pcie_completion_timeout(struct pci_dev * pci_dev,u16 timeout)8488 static inline int pqi_set_pcie_completion_timeout(struct pci_dev *pci_dev, u16 timeout)
8489 {
8490 int rc;
8491
8492 rc = pcie_capability_clear_and_set_word(pci_dev, PCI_EXP_DEVCTL2,
8493 PCI_EXP_DEVCTL2_COMP_TIMEOUT, timeout);
8494
8495 return pcibios_err_to_errno(rc);
8496 }
8497
pqi_pci_init(struct pqi_ctrl_info * ctrl_info)8498 static int pqi_pci_init(struct pqi_ctrl_info *ctrl_info)
8499 {
8500 int rc;
8501 u64 mask;
8502
8503 rc = pci_enable_device(ctrl_info->pci_dev);
8504 if (rc) {
8505 dev_err(&ctrl_info->pci_dev->dev,
8506 "failed to enable PCI device\n");
8507 return rc;
8508 }
8509
8510 if (sizeof(dma_addr_t) > 4)
8511 mask = DMA_BIT_MASK(64);
8512 else
8513 mask = DMA_BIT_MASK(32);
8514
8515 rc = dma_set_mask_and_coherent(&ctrl_info->pci_dev->dev, mask);
8516 if (rc) {
8517 dev_err(&ctrl_info->pci_dev->dev, "failed to set DMA mask\n");
8518 goto disable_device;
8519 }
8520
8521 rc = pci_request_regions(ctrl_info->pci_dev, DRIVER_NAME_SHORT);
8522 if (rc) {
8523 dev_err(&ctrl_info->pci_dev->dev,
8524 "failed to obtain PCI resources\n");
8525 goto disable_device;
8526 }
8527
8528 ctrl_info->iomem_base = ioremap(pci_resource_start(
8529 ctrl_info->pci_dev, 0),
8530 sizeof(struct pqi_ctrl_registers));
8531 if (!ctrl_info->iomem_base) {
8532 dev_err(&ctrl_info->pci_dev->dev,
8533 "failed to map memory for controller registers\n");
8534 rc = -ENOMEM;
8535 goto release_regions;
8536 }
8537
8538 #define PCI_EXP_COMP_TIMEOUT_65_TO_210_MS 0x6
8539
8540 /* Increase the PCIe completion timeout. */
8541 rc = pqi_set_pcie_completion_timeout(ctrl_info->pci_dev,
8542 PCI_EXP_COMP_TIMEOUT_65_TO_210_MS);
8543 if (rc) {
8544 dev_err(&ctrl_info->pci_dev->dev,
8545 "failed to set PCIe completion timeout\n");
8546 goto release_regions;
8547 }
8548
8549 /* Enable bus mastering. */
8550 pci_set_master(ctrl_info->pci_dev);
8551
8552 ctrl_info->registers = ctrl_info->iomem_base;
8553 ctrl_info->pqi_registers = &ctrl_info->registers->pqi_registers;
8554
8555 pci_set_drvdata(ctrl_info->pci_dev, ctrl_info);
8556
8557 return 0;
8558
8559 release_regions:
8560 pci_release_regions(ctrl_info->pci_dev);
8561 disable_device:
8562 pci_disable_device(ctrl_info->pci_dev);
8563
8564 return rc;
8565 }
8566
pqi_cleanup_pci_init(struct pqi_ctrl_info * ctrl_info)8567 static void pqi_cleanup_pci_init(struct pqi_ctrl_info *ctrl_info)
8568 {
8569 iounmap(ctrl_info->iomem_base);
8570 pci_release_regions(ctrl_info->pci_dev);
8571 if (pci_is_enabled(ctrl_info->pci_dev))
8572 pci_disable_device(ctrl_info->pci_dev);
8573 pci_set_drvdata(ctrl_info->pci_dev, NULL);
8574 }
8575
pqi_alloc_ctrl_info(int numa_node)8576 static struct pqi_ctrl_info *pqi_alloc_ctrl_info(int numa_node)
8577 {
8578 struct pqi_ctrl_info *ctrl_info;
8579
8580 ctrl_info = kzalloc_node(sizeof(struct pqi_ctrl_info),
8581 GFP_KERNEL, numa_node);
8582 if (!ctrl_info)
8583 return NULL;
8584
8585 mutex_init(&ctrl_info->scan_mutex);
8586 mutex_init(&ctrl_info->lun_reset_mutex);
8587 mutex_init(&ctrl_info->ofa_mutex);
8588
8589 INIT_LIST_HEAD(&ctrl_info->scsi_device_list);
8590 spin_lock_init(&ctrl_info->scsi_device_list_lock);
8591
8592 INIT_WORK(&ctrl_info->event_work, pqi_event_worker);
8593 atomic_set(&ctrl_info->num_interrupts, 0);
8594
8595 INIT_DELAYED_WORK(&ctrl_info->rescan_work, pqi_rescan_worker);
8596 INIT_DELAYED_WORK(&ctrl_info->update_time_work, pqi_update_time_worker);
8597
8598 timer_setup(&ctrl_info->heartbeat_timer, pqi_heartbeat_timer_handler, 0);
8599 INIT_WORK(&ctrl_info->ctrl_offline_work, pqi_ctrl_offline_worker);
8600
8601 INIT_WORK(&ctrl_info->ofa_memory_alloc_work, pqi_ofa_memory_alloc_worker);
8602 INIT_WORK(&ctrl_info->ofa_quiesce_work, pqi_ofa_quiesce_worker);
8603
8604 sema_init(&ctrl_info->sync_request_sem,
8605 PQI_RESERVED_IO_SLOTS_SYNCHRONOUS_REQUESTS);
8606 init_waitqueue_head(&ctrl_info->block_requests_wait);
8607
8608 ctrl_info->ctrl_id = atomic_inc_return(&pqi_controller_count) - 1;
8609 ctrl_info->irq_mode = IRQ_MODE_NONE;
8610 ctrl_info->max_msix_vectors = PQI_MAX_MSIX_VECTORS;
8611
8612 ctrl_info->ciss_report_log_flags = CISS_REPORT_LOG_FLAG_UNIQUE_LUN_ID;
8613 ctrl_info->max_transfer_encrypted_sas_sata =
8614 PQI_DEFAULT_MAX_TRANSFER_ENCRYPTED_SAS_SATA;
8615 ctrl_info->max_transfer_encrypted_nvme =
8616 PQI_DEFAULT_MAX_TRANSFER_ENCRYPTED_NVME;
8617 ctrl_info->max_write_raid_5_6 = PQI_DEFAULT_MAX_WRITE_RAID_5_6;
8618 ctrl_info->max_write_raid_1_10_2drive = ~0;
8619 ctrl_info->max_write_raid_1_10_3drive = ~0;
8620 ctrl_info->disable_managed_interrupts = pqi_disable_managed_interrupts;
8621
8622 return ctrl_info;
8623 }
8624
pqi_free_ctrl_info(struct pqi_ctrl_info * ctrl_info)8625 static inline void pqi_free_ctrl_info(struct pqi_ctrl_info *ctrl_info)
8626 {
8627 kfree(ctrl_info);
8628 }
8629
pqi_free_interrupts(struct pqi_ctrl_info * ctrl_info)8630 static void pqi_free_interrupts(struct pqi_ctrl_info *ctrl_info)
8631 {
8632 pqi_free_irqs(ctrl_info);
8633 pqi_disable_msix_interrupts(ctrl_info);
8634 }
8635
pqi_free_ctrl_resources(struct pqi_ctrl_info * ctrl_info)8636 static void pqi_free_ctrl_resources(struct pqi_ctrl_info *ctrl_info)
8637 {
8638 pqi_free_interrupts(ctrl_info);
8639 if (ctrl_info->queue_memory_base)
8640 dma_free_coherent(&ctrl_info->pci_dev->dev,
8641 ctrl_info->queue_memory_length,
8642 ctrl_info->queue_memory_base,
8643 ctrl_info->queue_memory_base_dma_handle);
8644 if (ctrl_info->admin_queue_memory_base)
8645 dma_free_coherent(&ctrl_info->pci_dev->dev,
8646 ctrl_info->admin_queue_memory_length,
8647 ctrl_info->admin_queue_memory_base,
8648 ctrl_info->admin_queue_memory_base_dma_handle);
8649 pqi_free_all_io_requests(ctrl_info);
8650 if (ctrl_info->error_buffer)
8651 dma_free_coherent(&ctrl_info->pci_dev->dev,
8652 ctrl_info->error_buffer_length,
8653 ctrl_info->error_buffer,
8654 ctrl_info->error_buffer_dma_handle);
8655 if (ctrl_info->iomem_base)
8656 pqi_cleanup_pci_init(ctrl_info);
8657 pqi_free_ctrl_info(ctrl_info);
8658 }
8659
pqi_remove_ctrl(struct pqi_ctrl_info * ctrl_info)8660 static void pqi_remove_ctrl(struct pqi_ctrl_info *ctrl_info)
8661 {
8662 ctrl_info->controller_online = false;
8663 pqi_stop_heartbeat_timer(ctrl_info);
8664 pqi_ctrl_block_requests(ctrl_info);
8665 pqi_cancel_rescan_worker(ctrl_info);
8666 pqi_cancel_update_time_worker(ctrl_info);
8667 if (ctrl_info->ctrl_removal_state == PQI_CTRL_SURPRISE_REMOVAL) {
8668 pqi_fail_all_outstanding_requests(ctrl_info);
8669 ctrl_info->pqi_mode_enabled = false;
8670 }
8671 pqi_unregister_scsi(ctrl_info);
8672 if (ctrl_info->pqi_mode_enabled)
8673 pqi_revert_to_sis_mode(ctrl_info);
8674 pqi_free_ctrl_resources(ctrl_info);
8675 }
8676
pqi_ofa_ctrl_quiesce(struct pqi_ctrl_info * ctrl_info)8677 static void pqi_ofa_ctrl_quiesce(struct pqi_ctrl_info *ctrl_info)
8678 {
8679 pqi_ctrl_block_scan(ctrl_info);
8680 pqi_scsi_block_requests(ctrl_info);
8681 pqi_ctrl_block_device_reset(ctrl_info);
8682 pqi_ctrl_block_requests(ctrl_info);
8683 pqi_ctrl_wait_until_quiesced(ctrl_info);
8684 pqi_stop_heartbeat_timer(ctrl_info);
8685 }
8686
pqi_ofa_ctrl_unquiesce(struct pqi_ctrl_info * ctrl_info)8687 static void pqi_ofa_ctrl_unquiesce(struct pqi_ctrl_info *ctrl_info)
8688 {
8689 pqi_start_heartbeat_timer(ctrl_info);
8690 pqi_ctrl_unblock_requests(ctrl_info);
8691 pqi_ctrl_unblock_device_reset(ctrl_info);
8692 pqi_scsi_unblock_requests(ctrl_info);
8693 pqi_ctrl_unblock_scan(ctrl_info);
8694 }
8695
pqi_ofa_alloc_mem(struct pqi_ctrl_info * ctrl_info,u32 total_size,u32 chunk_size)8696 static int pqi_ofa_alloc_mem(struct pqi_ctrl_info *ctrl_info, u32 total_size, u32 chunk_size)
8697 {
8698 int i;
8699 u32 sg_count;
8700 struct device *dev;
8701 struct pqi_ofa_memory *ofap;
8702 struct pqi_sg_descriptor *mem_descriptor;
8703 dma_addr_t dma_handle;
8704
8705 ofap = ctrl_info->pqi_ofa_mem_virt_addr;
8706
8707 sg_count = DIV_ROUND_UP(total_size, chunk_size);
8708 if (sg_count == 0 || sg_count > PQI_OFA_MAX_SG_DESCRIPTORS)
8709 goto out;
8710
8711 ctrl_info->pqi_ofa_chunk_virt_addr = kmalloc_array(sg_count, sizeof(void *), GFP_KERNEL);
8712 if (!ctrl_info->pqi_ofa_chunk_virt_addr)
8713 goto out;
8714
8715 dev = &ctrl_info->pci_dev->dev;
8716
8717 for (i = 0; i < sg_count; i++) {
8718 ctrl_info->pqi_ofa_chunk_virt_addr[i] =
8719 dma_alloc_coherent(dev, chunk_size, &dma_handle, GFP_KERNEL);
8720 if (!ctrl_info->pqi_ofa_chunk_virt_addr[i])
8721 goto out_free_chunks;
8722 mem_descriptor = &ofap->sg_descriptor[i];
8723 put_unaligned_le64((u64)dma_handle, &mem_descriptor->address);
8724 put_unaligned_le32(chunk_size, &mem_descriptor->length);
8725 }
8726
8727 put_unaligned_le32(CISS_SG_LAST, &mem_descriptor->flags);
8728 put_unaligned_le16(sg_count, &ofap->num_memory_descriptors);
8729 put_unaligned_le32(sg_count * chunk_size, &ofap->bytes_allocated);
8730
8731 return 0;
8732
8733 out_free_chunks:
8734 while (--i >= 0) {
8735 mem_descriptor = &ofap->sg_descriptor[i];
8736 dma_free_coherent(dev, chunk_size,
8737 ctrl_info->pqi_ofa_chunk_virt_addr[i],
8738 get_unaligned_le64(&mem_descriptor->address));
8739 }
8740 kfree(ctrl_info->pqi_ofa_chunk_virt_addr);
8741
8742 out:
8743 return -ENOMEM;
8744 }
8745
pqi_ofa_alloc_host_buffer(struct pqi_ctrl_info * ctrl_info)8746 static int pqi_ofa_alloc_host_buffer(struct pqi_ctrl_info *ctrl_info)
8747 {
8748 u32 total_size;
8749 u32 chunk_size;
8750 u32 min_chunk_size;
8751
8752 if (ctrl_info->ofa_bytes_requested == 0)
8753 return 0;
8754
8755 total_size = PAGE_ALIGN(ctrl_info->ofa_bytes_requested);
8756 min_chunk_size = DIV_ROUND_UP(total_size, PQI_OFA_MAX_SG_DESCRIPTORS);
8757 min_chunk_size = PAGE_ALIGN(min_chunk_size);
8758
8759 for (chunk_size = total_size; chunk_size >= min_chunk_size;) {
8760 if (pqi_ofa_alloc_mem(ctrl_info, total_size, chunk_size) == 0)
8761 return 0;
8762 chunk_size /= 2;
8763 chunk_size = PAGE_ALIGN(chunk_size);
8764 }
8765
8766 return -ENOMEM;
8767 }
8768
pqi_ofa_setup_host_buffer(struct pqi_ctrl_info * ctrl_info)8769 static void pqi_ofa_setup_host_buffer(struct pqi_ctrl_info *ctrl_info)
8770 {
8771 struct device *dev;
8772 struct pqi_ofa_memory *ofap;
8773
8774 dev = &ctrl_info->pci_dev->dev;
8775
8776 ofap = dma_alloc_coherent(dev, sizeof(*ofap),
8777 &ctrl_info->pqi_ofa_mem_dma_handle, GFP_KERNEL);
8778 if (!ofap)
8779 return;
8780
8781 ctrl_info->pqi_ofa_mem_virt_addr = ofap;
8782
8783 if (pqi_ofa_alloc_host_buffer(ctrl_info) < 0) {
8784 dev_err(dev,
8785 "failed to allocate host buffer for Online Firmware Activation\n");
8786 dma_free_coherent(dev, sizeof(*ofap), ofap, ctrl_info->pqi_ofa_mem_dma_handle);
8787 ctrl_info->pqi_ofa_mem_virt_addr = NULL;
8788 return;
8789 }
8790
8791 put_unaligned_le16(PQI_OFA_VERSION, &ofap->version);
8792 memcpy(&ofap->signature, PQI_OFA_SIGNATURE, sizeof(ofap->signature));
8793 }
8794
pqi_ofa_free_host_buffer(struct pqi_ctrl_info * ctrl_info)8795 static void pqi_ofa_free_host_buffer(struct pqi_ctrl_info *ctrl_info)
8796 {
8797 unsigned int i;
8798 struct device *dev;
8799 struct pqi_ofa_memory *ofap;
8800 struct pqi_sg_descriptor *mem_descriptor;
8801 unsigned int num_memory_descriptors;
8802
8803 ofap = ctrl_info->pqi_ofa_mem_virt_addr;
8804 if (!ofap)
8805 return;
8806
8807 dev = &ctrl_info->pci_dev->dev;
8808
8809 if (get_unaligned_le32(&ofap->bytes_allocated) == 0)
8810 goto out;
8811
8812 mem_descriptor = ofap->sg_descriptor;
8813 num_memory_descriptors =
8814 get_unaligned_le16(&ofap->num_memory_descriptors);
8815
8816 for (i = 0; i < num_memory_descriptors; i++) {
8817 dma_free_coherent(dev,
8818 get_unaligned_le32(&mem_descriptor[i].length),
8819 ctrl_info->pqi_ofa_chunk_virt_addr[i],
8820 get_unaligned_le64(&mem_descriptor[i].address));
8821 }
8822 kfree(ctrl_info->pqi_ofa_chunk_virt_addr);
8823
8824 out:
8825 dma_free_coherent(dev, sizeof(*ofap), ofap,
8826 ctrl_info->pqi_ofa_mem_dma_handle);
8827 ctrl_info->pqi_ofa_mem_virt_addr = NULL;
8828 }
8829
pqi_ofa_host_memory_update(struct pqi_ctrl_info * ctrl_info)8830 static int pqi_ofa_host_memory_update(struct pqi_ctrl_info *ctrl_info)
8831 {
8832 u32 buffer_length;
8833 struct pqi_vendor_general_request request;
8834 struct pqi_ofa_memory *ofap;
8835
8836 memset(&request, 0, sizeof(request));
8837
8838 request.header.iu_type = PQI_REQUEST_IU_VENDOR_GENERAL;
8839 put_unaligned_le16(sizeof(request) - PQI_REQUEST_HEADER_LENGTH,
8840 &request.header.iu_length);
8841 put_unaligned_le16(PQI_VENDOR_GENERAL_HOST_MEMORY_UPDATE,
8842 &request.function_code);
8843
8844 ofap = ctrl_info->pqi_ofa_mem_virt_addr;
8845
8846 if (ofap) {
8847 buffer_length = offsetof(struct pqi_ofa_memory, sg_descriptor) +
8848 get_unaligned_le16(&ofap->num_memory_descriptors) *
8849 sizeof(struct pqi_sg_descriptor);
8850
8851 put_unaligned_le64((u64)ctrl_info->pqi_ofa_mem_dma_handle,
8852 &request.data.ofa_memory_allocation.buffer_address);
8853 put_unaligned_le32(buffer_length,
8854 &request.data.ofa_memory_allocation.buffer_length);
8855 }
8856
8857 return pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0, NULL);
8858 }
8859
pqi_ofa_ctrl_restart(struct pqi_ctrl_info * ctrl_info,unsigned int delay_secs)8860 static int pqi_ofa_ctrl_restart(struct pqi_ctrl_info *ctrl_info, unsigned int delay_secs)
8861 {
8862 ssleep(delay_secs);
8863
8864 return pqi_ctrl_init_resume(ctrl_info);
8865 }
8866
8867 static struct pqi_raid_error_info pqi_ctrl_offline_raid_error_info = {
8868 .data_out_result = PQI_DATA_IN_OUT_HARDWARE_ERROR,
8869 .status = SAM_STAT_CHECK_CONDITION,
8870 };
8871
pqi_fail_all_outstanding_requests(struct pqi_ctrl_info * ctrl_info)8872 static void pqi_fail_all_outstanding_requests(struct pqi_ctrl_info *ctrl_info)
8873 {
8874 unsigned int i;
8875 struct pqi_io_request *io_request;
8876 struct scsi_cmnd *scmd;
8877 struct scsi_device *sdev;
8878
8879 for (i = 0; i < ctrl_info->max_io_slots; i++) {
8880 io_request = &ctrl_info->io_request_pool[i];
8881 if (atomic_read(&io_request->refcount) == 0)
8882 continue;
8883
8884 scmd = io_request->scmd;
8885 if (scmd) {
8886 sdev = scmd->device;
8887 if (!sdev || !scsi_device_online(sdev)) {
8888 pqi_free_io_request(io_request);
8889 continue;
8890 } else {
8891 set_host_byte(scmd, DID_NO_CONNECT);
8892 }
8893 } else {
8894 io_request->status = -ENXIO;
8895 io_request->error_info =
8896 &pqi_ctrl_offline_raid_error_info;
8897 }
8898
8899 io_request->io_complete_callback(io_request,
8900 io_request->context);
8901 }
8902 }
8903
pqi_take_ctrl_offline_deferred(struct pqi_ctrl_info * ctrl_info)8904 static void pqi_take_ctrl_offline_deferred(struct pqi_ctrl_info *ctrl_info)
8905 {
8906 pqi_perform_lockup_action();
8907 pqi_stop_heartbeat_timer(ctrl_info);
8908 pqi_free_interrupts(ctrl_info);
8909 pqi_cancel_rescan_worker(ctrl_info);
8910 pqi_cancel_update_time_worker(ctrl_info);
8911 pqi_ctrl_wait_until_quiesced(ctrl_info);
8912 pqi_fail_all_outstanding_requests(ctrl_info);
8913 pqi_ctrl_unblock_requests(ctrl_info);
8914 }
8915
pqi_ctrl_offline_worker(struct work_struct * work)8916 static void pqi_ctrl_offline_worker(struct work_struct *work)
8917 {
8918 struct pqi_ctrl_info *ctrl_info;
8919
8920 ctrl_info = container_of(work, struct pqi_ctrl_info, ctrl_offline_work);
8921 pqi_take_ctrl_offline_deferred(ctrl_info);
8922 }
8923
pqi_take_ctrl_offline(struct pqi_ctrl_info * ctrl_info,enum pqi_ctrl_shutdown_reason ctrl_shutdown_reason)8924 static void pqi_take_ctrl_offline(struct pqi_ctrl_info *ctrl_info,
8925 enum pqi_ctrl_shutdown_reason ctrl_shutdown_reason)
8926 {
8927 if (!ctrl_info->controller_online)
8928 return;
8929
8930 ctrl_info->controller_online = false;
8931 ctrl_info->pqi_mode_enabled = false;
8932 pqi_ctrl_block_requests(ctrl_info);
8933 if (!pqi_disable_ctrl_shutdown)
8934 sis_shutdown_ctrl(ctrl_info, ctrl_shutdown_reason);
8935 pci_disable_device(ctrl_info->pci_dev);
8936 dev_err(&ctrl_info->pci_dev->dev, "controller offline\n");
8937 schedule_work(&ctrl_info->ctrl_offline_work);
8938 }
8939
pqi_print_ctrl_info(struct pci_dev * pci_dev,const struct pci_device_id * id)8940 static void pqi_print_ctrl_info(struct pci_dev *pci_dev,
8941 const struct pci_device_id *id)
8942 {
8943 char *ctrl_description;
8944
8945 if (id->driver_data)
8946 ctrl_description = (char *)id->driver_data;
8947 else
8948 ctrl_description = "Microchip Smart Family Controller";
8949
8950 dev_info(&pci_dev->dev, "%s found\n", ctrl_description);
8951 }
8952
pqi_pci_probe(struct pci_dev * pci_dev,const struct pci_device_id * id)8953 static int pqi_pci_probe(struct pci_dev *pci_dev,
8954 const struct pci_device_id *id)
8955 {
8956 int rc;
8957 int node;
8958 struct pqi_ctrl_info *ctrl_info;
8959
8960 pqi_print_ctrl_info(pci_dev, id);
8961
8962 if (pqi_disable_device_id_wildcards &&
8963 id->subvendor == PCI_ANY_ID &&
8964 id->subdevice == PCI_ANY_ID) {
8965 dev_warn(&pci_dev->dev,
8966 "controller not probed because device ID wildcards are disabled\n");
8967 return -ENODEV;
8968 }
8969
8970 if (id->subvendor == PCI_ANY_ID || id->subdevice == PCI_ANY_ID)
8971 dev_warn(&pci_dev->dev,
8972 "controller device ID matched using wildcards\n");
8973
8974 node = dev_to_node(&pci_dev->dev);
8975 if (node == NUMA_NO_NODE) {
8976 node = cpu_to_node(0);
8977 if (node == NUMA_NO_NODE)
8978 node = 0;
8979 set_dev_node(&pci_dev->dev, node);
8980 }
8981
8982 ctrl_info = pqi_alloc_ctrl_info(node);
8983 if (!ctrl_info) {
8984 dev_err(&pci_dev->dev,
8985 "failed to allocate controller info block\n");
8986 return -ENOMEM;
8987 }
8988
8989 ctrl_info->pci_dev = pci_dev;
8990
8991 rc = pqi_pci_init(ctrl_info);
8992 if (rc)
8993 goto error;
8994
8995 rc = pqi_ctrl_init(ctrl_info);
8996 if (rc)
8997 goto error;
8998
8999 return 0;
9000
9001 error:
9002 pqi_remove_ctrl(ctrl_info);
9003
9004 return rc;
9005 }
9006
pqi_pci_remove(struct pci_dev * pci_dev)9007 static void pqi_pci_remove(struct pci_dev *pci_dev)
9008 {
9009 struct pqi_ctrl_info *ctrl_info;
9010 u16 vendor_id;
9011
9012 ctrl_info = pci_get_drvdata(pci_dev);
9013 if (!ctrl_info)
9014 return;
9015
9016 pci_read_config_word(ctrl_info->pci_dev, PCI_SUBSYSTEM_VENDOR_ID, &vendor_id);
9017 if (vendor_id == 0xffff)
9018 ctrl_info->ctrl_removal_state = PQI_CTRL_SURPRISE_REMOVAL;
9019 else
9020 ctrl_info->ctrl_removal_state = PQI_CTRL_GRACEFUL_REMOVAL;
9021
9022 pqi_remove_ctrl(ctrl_info);
9023 }
9024
pqi_crash_if_pending_command(struct pqi_ctrl_info * ctrl_info)9025 static void pqi_crash_if_pending_command(struct pqi_ctrl_info *ctrl_info)
9026 {
9027 unsigned int i;
9028 struct pqi_io_request *io_request;
9029 struct scsi_cmnd *scmd;
9030
9031 for (i = 0; i < ctrl_info->max_io_slots; i++) {
9032 io_request = &ctrl_info->io_request_pool[i];
9033 if (atomic_read(&io_request->refcount) == 0)
9034 continue;
9035 scmd = io_request->scmd;
9036 WARN_ON(scmd != NULL); /* IO command from SML */
9037 WARN_ON(scmd == NULL); /* Non-IO cmd or driver initiated*/
9038 }
9039 }
9040
pqi_shutdown(struct pci_dev * pci_dev)9041 static void pqi_shutdown(struct pci_dev *pci_dev)
9042 {
9043 int rc;
9044 struct pqi_ctrl_info *ctrl_info;
9045 enum bmic_flush_cache_shutdown_event shutdown_event;
9046
9047 ctrl_info = pci_get_drvdata(pci_dev);
9048 if (!ctrl_info) {
9049 dev_err(&pci_dev->dev,
9050 "cache could not be flushed\n");
9051 return;
9052 }
9053
9054 pqi_wait_until_ofa_finished(ctrl_info);
9055
9056 pqi_scsi_block_requests(ctrl_info);
9057 pqi_ctrl_block_device_reset(ctrl_info);
9058 pqi_ctrl_block_requests(ctrl_info);
9059 pqi_ctrl_wait_until_quiesced(ctrl_info);
9060
9061 if (system_state == SYSTEM_RESTART)
9062 shutdown_event = RESTART;
9063 else
9064 shutdown_event = SHUTDOWN;
9065
9066 /*
9067 * Write all data in the controller's battery-backed cache to
9068 * storage.
9069 */
9070 rc = pqi_flush_cache(ctrl_info, shutdown_event);
9071 if (rc)
9072 dev_err(&pci_dev->dev,
9073 "unable to flush controller cache\n");
9074
9075 pqi_crash_if_pending_command(ctrl_info);
9076 pqi_reset(ctrl_info);
9077 }
9078
pqi_process_lockup_action_param(void)9079 static void pqi_process_lockup_action_param(void)
9080 {
9081 unsigned int i;
9082
9083 if (!pqi_lockup_action_param)
9084 return;
9085
9086 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) {
9087 if (strcmp(pqi_lockup_action_param,
9088 pqi_lockup_actions[i].name) == 0) {
9089 pqi_lockup_action = pqi_lockup_actions[i].action;
9090 return;
9091 }
9092 }
9093
9094 pr_warn("%s: invalid lockup action setting \"%s\" - supported settings: none, reboot, panic\n",
9095 DRIVER_NAME_SHORT, pqi_lockup_action_param);
9096 }
9097
9098 #define PQI_CTRL_READY_TIMEOUT_PARAM_MIN_SECS 30
9099 #define PQI_CTRL_READY_TIMEOUT_PARAM_MAX_SECS (30 * 60)
9100
pqi_process_ctrl_ready_timeout_param(void)9101 static void pqi_process_ctrl_ready_timeout_param(void)
9102 {
9103 if (pqi_ctrl_ready_timeout_secs == 0)
9104 return;
9105
9106 if (pqi_ctrl_ready_timeout_secs < PQI_CTRL_READY_TIMEOUT_PARAM_MIN_SECS) {
9107 pr_warn("%s: ctrl_ready_timeout parm of %u second(s) is less than minimum timeout of %d seconds - setting timeout to %d seconds\n",
9108 DRIVER_NAME_SHORT, pqi_ctrl_ready_timeout_secs, PQI_CTRL_READY_TIMEOUT_PARAM_MIN_SECS, PQI_CTRL_READY_TIMEOUT_PARAM_MIN_SECS);
9109 pqi_ctrl_ready_timeout_secs = PQI_CTRL_READY_TIMEOUT_PARAM_MIN_SECS;
9110 } else if (pqi_ctrl_ready_timeout_secs > PQI_CTRL_READY_TIMEOUT_PARAM_MAX_SECS) {
9111 pr_warn("%s: ctrl_ready_timeout parm of %u seconds is greater than maximum timeout of %d seconds - setting timeout to %d seconds\n",
9112 DRIVER_NAME_SHORT, pqi_ctrl_ready_timeout_secs, PQI_CTRL_READY_TIMEOUT_PARAM_MAX_SECS, PQI_CTRL_READY_TIMEOUT_PARAM_MAX_SECS);
9113 pqi_ctrl_ready_timeout_secs = PQI_CTRL_READY_TIMEOUT_PARAM_MAX_SECS;
9114 }
9115
9116 sis_ctrl_ready_timeout_secs = pqi_ctrl_ready_timeout_secs;
9117 }
9118
pqi_process_module_params(void)9119 static void pqi_process_module_params(void)
9120 {
9121 pqi_process_lockup_action_param();
9122 pqi_process_ctrl_ready_timeout_param();
9123 }
9124
9125 #if defined(CONFIG_PM)
9126
pqi_get_flush_cache_shutdown_event(struct pci_dev * pci_dev)9127 static inline enum bmic_flush_cache_shutdown_event pqi_get_flush_cache_shutdown_event(struct pci_dev *pci_dev)
9128 {
9129 if (pci_dev->subsystem_vendor == PCI_VENDOR_ID_ADAPTEC2 && pci_dev->subsystem_device == 0x1304)
9130 return RESTART;
9131
9132 return SUSPEND;
9133 }
9134
pqi_suspend_or_freeze(struct device * dev,bool suspend)9135 static int pqi_suspend_or_freeze(struct device *dev, bool suspend)
9136 {
9137 struct pci_dev *pci_dev;
9138 struct pqi_ctrl_info *ctrl_info;
9139
9140 pci_dev = to_pci_dev(dev);
9141 ctrl_info = pci_get_drvdata(pci_dev);
9142
9143 pqi_wait_until_ofa_finished(ctrl_info);
9144
9145 pqi_ctrl_block_scan(ctrl_info);
9146 pqi_scsi_block_requests(ctrl_info);
9147 pqi_ctrl_block_device_reset(ctrl_info);
9148 pqi_ctrl_block_requests(ctrl_info);
9149 pqi_ctrl_wait_until_quiesced(ctrl_info);
9150
9151 if (suspend) {
9152 enum bmic_flush_cache_shutdown_event shutdown_event;
9153
9154 shutdown_event = pqi_get_flush_cache_shutdown_event(pci_dev);
9155 pqi_flush_cache(ctrl_info, shutdown_event);
9156 }
9157
9158 pqi_stop_heartbeat_timer(ctrl_info);
9159 pqi_crash_if_pending_command(ctrl_info);
9160 pqi_free_irqs(ctrl_info);
9161
9162 ctrl_info->controller_online = false;
9163 ctrl_info->pqi_mode_enabled = false;
9164
9165 return 0;
9166 }
9167
pqi_suspend(struct device * dev)9168 static __maybe_unused int pqi_suspend(struct device *dev)
9169 {
9170 return pqi_suspend_or_freeze(dev, true);
9171 }
9172
pqi_resume_or_restore(struct device * dev)9173 static int pqi_resume_or_restore(struct device *dev)
9174 {
9175 int rc;
9176 struct pci_dev *pci_dev;
9177 struct pqi_ctrl_info *ctrl_info;
9178
9179 pci_dev = to_pci_dev(dev);
9180 ctrl_info = pci_get_drvdata(pci_dev);
9181
9182 rc = pqi_request_irqs(ctrl_info);
9183 if (rc)
9184 return rc;
9185
9186 pqi_ctrl_unblock_device_reset(ctrl_info);
9187 pqi_ctrl_unblock_requests(ctrl_info);
9188 pqi_scsi_unblock_requests(ctrl_info);
9189 pqi_ctrl_unblock_scan(ctrl_info);
9190
9191 ssleep(PQI_POST_RESET_DELAY_SECS);
9192
9193 return pqi_ctrl_init_resume(ctrl_info);
9194 }
9195
pqi_freeze(struct device * dev)9196 static int pqi_freeze(struct device *dev)
9197 {
9198 return pqi_suspend_or_freeze(dev, false);
9199 }
9200
pqi_thaw(struct device * dev)9201 static int pqi_thaw(struct device *dev)
9202 {
9203 int rc;
9204 struct pci_dev *pci_dev;
9205 struct pqi_ctrl_info *ctrl_info;
9206
9207 pci_dev = to_pci_dev(dev);
9208 ctrl_info = pci_get_drvdata(pci_dev);
9209
9210 rc = pqi_request_irqs(ctrl_info);
9211 if (rc)
9212 return rc;
9213
9214 ctrl_info->controller_online = true;
9215 ctrl_info->pqi_mode_enabled = true;
9216
9217 pqi_ctrl_unblock_device_reset(ctrl_info);
9218 pqi_ctrl_unblock_requests(ctrl_info);
9219 pqi_scsi_unblock_requests(ctrl_info);
9220 pqi_ctrl_unblock_scan(ctrl_info);
9221
9222 return 0;
9223 }
9224
pqi_poweroff(struct device * dev)9225 static int pqi_poweroff(struct device *dev)
9226 {
9227 struct pci_dev *pci_dev;
9228 struct pqi_ctrl_info *ctrl_info;
9229 enum bmic_flush_cache_shutdown_event shutdown_event;
9230
9231 pci_dev = to_pci_dev(dev);
9232 ctrl_info = pci_get_drvdata(pci_dev);
9233
9234 shutdown_event = pqi_get_flush_cache_shutdown_event(pci_dev);
9235 pqi_flush_cache(ctrl_info, shutdown_event);
9236
9237 return 0;
9238 }
9239
9240 static const struct dev_pm_ops pqi_pm_ops = {
9241 .suspend = pqi_suspend,
9242 .resume = pqi_resume_or_restore,
9243 .freeze = pqi_freeze,
9244 .thaw = pqi_thaw,
9245 .poweroff = pqi_poweroff,
9246 .restore = pqi_resume_or_restore,
9247 };
9248
9249 #endif /* CONFIG_PM */
9250
9251 /* Define the PCI IDs for the controllers that we support. */
9252 static const struct pci_device_id pqi_pci_id_table[] = {
9253 {
9254 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9255 0x105b, 0x1211)
9256 },
9257 {
9258 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9259 0x105b, 0x1321)
9260 },
9261 {
9262 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9263 0x152d, 0x8a22)
9264 },
9265 {
9266 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9267 0x152d, 0x8a23)
9268 },
9269 {
9270 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9271 0x152d, 0x8a24)
9272 },
9273 {
9274 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9275 0x152d, 0x8a36)
9276 },
9277 {
9278 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9279 0x152d, 0x8a37)
9280 },
9281 {
9282 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9283 0x193d, 0x1104)
9284 },
9285 {
9286 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9287 0x193d, 0x1105)
9288 },
9289 {
9290 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9291 0x193d, 0x1106)
9292 },
9293 {
9294 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9295 0x193d, 0x1107)
9296 },
9297 {
9298 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9299 0x193d, 0x1108)
9300 },
9301 {
9302 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9303 0x193d, 0x1109)
9304 },
9305 {
9306 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9307 0x193d, 0x8460)
9308 },
9309 {
9310 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9311 0x193d, 0x8461)
9312 },
9313 {
9314 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9315 0x193d, 0xc460)
9316 },
9317 {
9318 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9319 0x193d, 0xc461)
9320 },
9321 {
9322 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9323 0x193d, 0xf460)
9324 },
9325 {
9326 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9327 0x193d, 0xf461)
9328 },
9329 {
9330 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9331 0x1bd4, 0x0045)
9332 },
9333 {
9334 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9335 0x1bd4, 0x0046)
9336 },
9337 {
9338 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9339 0x1bd4, 0x0047)
9340 },
9341 {
9342 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9343 0x1bd4, 0x0048)
9344 },
9345 {
9346 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9347 0x1bd4, 0x004a)
9348 },
9349 {
9350 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9351 0x1bd4, 0x004b)
9352 },
9353 {
9354 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9355 0x1bd4, 0x004c)
9356 },
9357 {
9358 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9359 0x1bd4, 0x004f)
9360 },
9361 {
9362 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9363 0x1bd4, 0x0051)
9364 },
9365 {
9366 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9367 0x1bd4, 0x0052)
9368 },
9369 {
9370 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9371 0x1bd4, 0x0053)
9372 },
9373 {
9374 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9375 0x1bd4, 0x0054)
9376 },
9377 {
9378 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9379 0x1bd4, 0x006b)
9380 },
9381 {
9382 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9383 0x1bd4, 0x006c)
9384 },
9385 {
9386 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9387 0x1bd4, 0x006d)
9388 },
9389 {
9390 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9391 0x1bd4, 0x006f)
9392 },
9393 {
9394 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9395 0x1bd4, 0x0070)
9396 },
9397 {
9398 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9399 0x1bd4, 0x0071)
9400 },
9401 {
9402 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9403 0x1bd4, 0x0072)
9404 },
9405 {
9406 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9407 0x19e5, 0xd227)
9408 },
9409 {
9410 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9411 0x19e5, 0xd228)
9412 },
9413 {
9414 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9415 0x19e5, 0xd229)
9416 },
9417 {
9418 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9419 0x19e5, 0xd22a)
9420 },
9421 {
9422 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9423 0x19e5, 0xd22b)
9424 },
9425 {
9426 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9427 0x19e5, 0xd22c)
9428 },
9429 {
9430 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9431 PCI_VENDOR_ID_ADAPTEC2, 0x0110)
9432 },
9433 {
9434 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9435 PCI_VENDOR_ID_ADAPTEC2, 0x0608)
9436 },
9437 {
9438 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9439 PCI_VENDOR_ID_ADAPTEC2, 0x0659)
9440 },
9441 {
9442 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9443 PCI_VENDOR_ID_ADAPTEC2, 0x0800)
9444 },
9445 {
9446 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9447 PCI_VENDOR_ID_ADAPTEC2, 0x0801)
9448 },
9449 {
9450 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9451 PCI_VENDOR_ID_ADAPTEC2, 0x0802)
9452 },
9453 {
9454 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9455 PCI_VENDOR_ID_ADAPTEC2, 0x0803)
9456 },
9457 {
9458 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9459 PCI_VENDOR_ID_ADAPTEC2, 0x0804)
9460 },
9461 {
9462 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9463 PCI_VENDOR_ID_ADAPTEC2, 0x0805)
9464 },
9465 {
9466 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9467 PCI_VENDOR_ID_ADAPTEC2, 0x0806)
9468 },
9469 {
9470 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9471 PCI_VENDOR_ID_ADAPTEC2, 0x0807)
9472 },
9473 {
9474 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9475 PCI_VENDOR_ID_ADAPTEC2, 0x0808)
9476 },
9477 {
9478 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9479 PCI_VENDOR_ID_ADAPTEC2, 0x0809)
9480 },
9481 {
9482 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9483 PCI_VENDOR_ID_ADAPTEC2, 0x080a)
9484 },
9485 {
9486 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9487 PCI_VENDOR_ID_ADAPTEC2, 0x0900)
9488 },
9489 {
9490 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9491 PCI_VENDOR_ID_ADAPTEC2, 0x0901)
9492 },
9493 {
9494 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9495 PCI_VENDOR_ID_ADAPTEC2, 0x0902)
9496 },
9497 {
9498 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9499 PCI_VENDOR_ID_ADAPTEC2, 0x0903)
9500 },
9501 {
9502 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9503 PCI_VENDOR_ID_ADAPTEC2, 0x0904)
9504 },
9505 {
9506 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9507 PCI_VENDOR_ID_ADAPTEC2, 0x0905)
9508 },
9509 {
9510 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9511 PCI_VENDOR_ID_ADAPTEC2, 0x0906)
9512 },
9513 {
9514 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9515 PCI_VENDOR_ID_ADAPTEC2, 0x0907)
9516 },
9517 {
9518 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9519 PCI_VENDOR_ID_ADAPTEC2, 0x0908)
9520 },
9521 {
9522 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9523 PCI_VENDOR_ID_ADAPTEC2, 0x090a)
9524 },
9525 {
9526 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9527 PCI_VENDOR_ID_ADAPTEC2, 0x1200)
9528 },
9529 {
9530 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9531 PCI_VENDOR_ID_ADAPTEC2, 0x1201)
9532 },
9533 {
9534 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9535 PCI_VENDOR_ID_ADAPTEC2, 0x1202)
9536 },
9537 {
9538 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9539 PCI_VENDOR_ID_ADAPTEC2, 0x1280)
9540 },
9541 {
9542 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9543 PCI_VENDOR_ID_ADAPTEC2, 0x1281)
9544 },
9545 {
9546 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9547 PCI_VENDOR_ID_ADAPTEC2, 0x1282)
9548 },
9549 {
9550 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9551 PCI_VENDOR_ID_ADAPTEC2, 0x1300)
9552 },
9553 {
9554 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9555 PCI_VENDOR_ID_ADAPTEC2, 0x1301)
9556 },
9557 {
9558 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9559 PCI_VENDOR_ID_ADAPTEC2, 0x1302)
9560 },
9561 {
9562 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9563 PCI_VENDOR_ID_ADAPTEC2, 0x1303)
9564 },
9565 {
9566 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9567 PCI_VENDOR_ID_ADAPTEC2, 0x1304)
9568 },
9569 {
9570 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9571 PCI_VENDOR_ID_ADAPTEC2, 0x1380)
9572 },
9573 {
9574 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9575 PCI_VENDOR_ID_ADAPTEC2, 0x1400)
9576 },
9577 {
9578 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9579 PCI_VENDOR_ID_ADAPTEC2, 0x1402)
9580 },
9581 {
9582 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9583 PCI_VENDOR_ID_ADAPTEC2, 0x1410)
9584 },
9585 {
9586 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9587 PCI_VENDOR_ID_ADAPTEC2, 0x1411)
9588 },
9589 {
9590 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9591 PCI_VENDOR_ID_ADAPTEC2, 0x1412)
9592 },
9593 {
9594 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9595 PCI_VENDOR_ID_ADAPTEC2, 0x1420)
9596 },
9597 {
9598 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9599 PCI_VENDOR_ID_ADAPTEC2, 0x1430)
9600 },
9601 {
9602 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9603 PCI_VENDOR_ID_ADAPTEC2, 0x1440)
9604 },
9605 {
9606 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9607 PCI_VENDOR_ID_ADAPTEC2, 0x1441)
9608 },
9609 {
9610 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9611 PCI_VENDOR_ID_ADAPTEC2, 0x1450)
9612 },
9613 {
9614 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9615 PCI_VENDOR_ID_ADAPTEC2, 0x1452)
9616 },
9617 {
9618 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9619 PCI_VENDOR_ID_ADAPTEC2, 0x1460)
9620 },
9621 {
9622 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9623 PCI_VENDOR_ID_ADAPTEC2, 0x1461)
9624 },
9625 {
9626 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9627 PCI_VENDOR_ID_ADAPTEC2, 0x1462)
9628 },
9629 {
9630 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9631 PCI_VENDOR_ID_ADAPTEC2, 0x1463)
9632 },
9633 {
9634 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9635 PCI_VENDOR_ID_ADAPTEC2, 0x1470)
9636 },
9637 {
9638 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9639 PCI_VENDOR_ID_ADAPTEC2, 0x1471)
9640 },
9641 {
9642 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9643 PCI_VENDOR_ID_ADAPTEC2, 0x1472)
9644 },
9645 {
9646 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9647 PCI_VENDOR_ID_ADAPTEC2, 0x1473)
9648 },
9649 {
9650 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9651 PCI_VENDOR_ID_ADAPTEC2, 0x1474)
9652 },
9653 {
9654 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9655 PCI_VENDOR_ID_ADAPTEC2, 0x1480)
9656 },
9657 {
9658 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9659 PCI_VENDOR_ID_ADAPTEC2, 0x1490)
9660 },
9661 {
9662 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9663 PCI_VENDOR_ID_ADAPTEC2, 0x1491)
9664 },
9665 {
9666 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9667 PCI_VENDOR_ID_ADAPTEC2, 0x14a0)
9668 },
9669 {
9670 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9671 PCI_VENDOR_ID_ADAPTEC2, 0x14a1)
9672 },
9673 {
9674 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9675 PCI_VENDOR_ID_ADAPTEC2, 0x14a2)
9676 },
9677 {
9678 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9679 PCI_VENDOR_ID_ADAPTEC2, 0x14a4)
9680 },
9681 {
9682 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9683 PCI_VENDOR_ID_ADAPTEC2, 0x14a5)
9684 },
9685 {
9686 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9687 PCI_VENDOR_ID_ADAPTEC2, 0x14a6)
9688 },
9689 {
9690 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9691 PCI_VENDOR_ID_ADAPTEC2, 0x14b0)
9692 },
9693 {
9694 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9695 PCI_VENDOR_ID_ADAPTEC2, 0x14b1)
9696 },
9697 {
9698 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9699 PCI_VENDOR_ID_ADAPTEC2, 0x14c0)
9700 },
9701 {
9702 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9703 PCI_VENDOR_ID_ADAPTEC2, 0x14c1)
9704 },
9705 {
9706 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9707 PCI_VENDOR_ID_ADAPTEC2, 0x14c2)
9708 },
9709 {
9710 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9711 PCI_VENDOR_ID_ADAPTEC2, 0x14d0)
9712 },
9713 {
9714 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9715 PCI_VENDOR_ID_ADAPTEC2, 0x14e0)
9716 },
9717 {
9718 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9719 PCI_VENDOR_ID_ADAPTEC2, 0x14f0)
9720 },
9721 {
9722 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9723 PCI_VENDOR_ID_ADVANTECH, 0x8312)
9724 },
9725 {
9726 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9727 PCI_VENDOR_ID_DELL, 0x1fe0)
9728 },
9729 {
9730 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9731 PCI_VENDOR_ID_HP, 0x0600)
9732 },
9733 {
9734 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9735 PCI_VENDOR_ID_HP, 0x0601)
9736 },
9737 {
9738 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9739 PCI_VENDOR_ID_HP, 0x0602)
9740 },
9741 {
9742 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9743 PCI_VENDOR_ID_HP, 0x0603)
9744 },
9745 {
9746 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9747 PCI_VENDOR_ID_HP, 0x0609)
9748 },
9749 {
9750 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9751 PCI_VENDOR_ID_HP, 0x0650)
9752 },
9753 {
9754 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9755 PCI_VENDOR_ID_HP, 0x0651)
9756 },
9757 {
9758 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9759 PCI_VENDOR_ID_HP, 0x0652)
9760 },
9761 {
9762 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9763 PCI_VENDOR_ID_HP, 0x0653)
9764 },
9765 {
9766 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9767 PCI_VENDOR_ID_HP, 0x0654)
9768 },
9769 {
9770 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9771 PCI_VENDOR_ID_HP, 0x0655)
9772 },
9773 {
9774 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9775 PCI_VENDOR_ID_HP, 0x0700)
9776 },
9777 {
9778 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9779 PCI_VENDOR_ID_HP, 0x0701)
9780 },
9781 {
9782 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9783 PCI_VENDOR_ID_HP, 0x1001)
9784 },
9785 {
9786 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9787 PCI_VENDOR_ID_HP, 0x1002)
9788 },
9789 {
9790 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9791 PCI_VENDOR_ID_HP, 0x1100)
9792 },
9793 {
9794 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9795 PCI_VENDOR_ID_HP, 0x1101)
9796 },
9797 {
9798 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9799 0x1590, 0x0294)
9800 },
9801 {
9802 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9803 0x1590, 0x02db)
9804 },
9805 {
9806 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9807 0x1590, 0x02dc)
9808 },
9809 {
9810 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9811 0x1590, 0x032e)
9812 },
9813 {
9814 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9815 0x1590, 0x036f)
9816 },
9817 {
9818 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9819 0x1590, 0x0381)
9820 },
9821 {
9822 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9823 0x1590, 0x0382)
9824 },
9825 {
9826 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9827 0x1590, 0x0383)
9828 },
9829 {
9830 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9831 0x1d8d, 0x0800)
9832 },
9833 {
9834 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9835 0x1d8d, 0x0908)
9836 },
9837 {
9838 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9839 0x1d8d, 0x0806)
9840 },
9841 {
9842 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9843 0x1d8d, 0x0916)
9844 },
9845 {
9846 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9847 PCI_VENDOR_ID_GIGABYTE, 0x1000)
9848 },
9849 {
9850 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9851 0x1dfc, 0x3161)
9852 },
9853 {
9854 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9855 0x1f0c, 0x3161)
9856 },
9857 {
9858 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9859 0x1cf2, 0x5445)
9860 },
9861 {
9862 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9863 0x1cf2, 0x5446)
9864 },
9865 {
9866 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9867 0x1cf2, 0x5447)
9868 },
9869 {
9870 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9871 0x1cf2, 0x5449)
9872 },
9873 {
9874 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9875 0x1cf2, 0x544a)
9876 },
9877 {
9878 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9879 0x1cf2, 0x544b)
9880 },
9881 {
9882 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9883 0x1cf2, 0x544d)
9884 },
9885 {
9886 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9887 0x1cf2, 0x544e)
9888 },
9889 {
9890 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9891 0x1cf2, 0x544f)
9892 },
9893 {
9894 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9895 0x1cf2, 0x0b27)
9896 },
9897 {
9898 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9899 0x1cf2, 0x0b29)
9900 },
9901 {
9902 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9903 0x1cf2, 0x0b45)
9904 },
9905 {
9906 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9907 0x1cc4, 0x0101)
9908 },
9909 {
9910 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9911 0x1cc4, 0x0201)
9912 },
9913 {
9914 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9915 PCI_VENDOR_ID_LENOVO, 0x0220)
9916 },
9917 {
9918 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9919 PCI_VENDOR_ID_LENOVO, 0x0221)
9920 },
9921 {
9922 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9923 PCI_VENDOR_ID_LENOVO, 0x0520)
9924 },
9925 {
9926 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9927 PCI_VENDOR_ID_LENOVO, 0x0522)
9928 },
9929 {
9930 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9931 PCI_VENDOR_ID_LENOVO, 0x0620)
9932 },
9933 {
9934 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9935 PCI_VENDOR_ID_LENOVO, 0x0621)
9936 },
9937 {
9938 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9939 PCI_VENDOR_ID_LENOVO, 0x0622)
9940 },
9941 {
9942 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9943 PCI_VENDOR_ID_LENOVO, 0x0623)
9944 },
9945 {
9946 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
9947 PCI_ANY_ID, PCI_ANY_ID)
9948 },
9949 { 0 }
9950 };
9951
9952 MODULE_DEVICE_TABLE(pci, pqi_pci_id_table);
9953
9954 static struct pci_driver pqi_pci_driver = {
9955 .name = DRIVER_NAME_SHORT,
9956 .id_table = pqi_pci_id_table,
9957 .probe = pqi_pci_probe,
9958 .remove = pqi_pci_remove,
9959 .shutdown = pqi_shutdown,
9960 #if defined(CONFIG_PM)
9961 .driver = {
9962 .pm = &pqi_pm_ops
9963 },
9964 #endif
9965 };
9966
pqi_init(void)9967 static int __init pqi_init(void)
9968 {
9969 int rc;
9970
9971 pr_info(DRIVER_NAME "\n");
9972 pqi_verify_structures();
9973 sis_verify_structures();
9974
9975 pqi_sas_transport_template = sas_attach_transport(&pqi_sas_transport_functions);
9976 if (!pqi_sas_transport_template)
9977 return -ENODEV;
9978
9979 pqi_process_module_params();
9980
9981 rc = pci_register_driver(&pqi_pci_driver);
9982 if (rc)
9983 sas_release_transport(pqi_sas_transport_template);
9984
9985 return rc;
9986 }
9987
pqi_cleanup(void)9988 static void __exit pqi_cleanup(void)
9989 {
9990 pci_unregister_driver(&pqi_pci_driver);
9991 sas_release_transport(pqi_sas_transport_template);
9992 }
9993
9994 module_init(pqi_init);
9995 module_exit(pqi_cleanup);
9996
pqi_verify_structures(void)9997 static void pqi_verify_structures(void)
9998 {
9999 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
10000 sis_host_to_ctrl_doorbell) != 0x20);
10001 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
10002 sis_interrupt_mask) != 0x34);
10003 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
10004 sis_ctrl_to_host_doorbell) != 0x9c);
10005 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
10006 sis_ctrl_to_host_doorbell_clear) != 0xa0);
10007 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
10008 sis_driver_scratch) != 0xb0);
10009 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
10010 sis_product_identifier) != 0xb4);
10011 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
10012 sis_firmware_status) != 0xbc);
10013 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
10014 sis_ctrl_shutdown_reason_code) != 0xcc);
10015 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
10016 sis_mailbox) != 0x1000);
10017 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
10018 pqi_registers) != 0x4000);
10019
10020 BUILD_BUG_ON(offsetof(struct pqi_iu_header,
10021 iu_type) != 0x0);
10022 BUILD_BUG_ON(offsetof(struct pqi_iu_header,
10023 iu_length) != 0x2);
10024 BUILD_BUG_ON(offsetof(struct pqi_iu_header,
10025 response_queue_id) != 0x4);
10026 BUILD_BUG_ON(offsetof(struct pqi_iu_header,
10027 driver_flags) != 0x6);
10028 BUILD_BUG_ON(sizeof(struct pqi_iu_header) != 0x8);
10029
10030 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
10031 status) != 0x0);
10032 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
10033 service_response) != 0x1);
10034 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
10035 data_present) != 0x2);
10036 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
10037 reserved) != 0x3);
10038 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
10039 residual_count) != 0x4);
10040 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
10041 data_length) != 0x8);
10042 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
10043 reserved1) != 0xa);
10044 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
10045 data) != 0xc);
10046 BUILD_BUG_ON(sizeof(struct pqi_aio_error_info) != 0x10c);
10047
10048 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
10049 data_in_result) != 0x0);
10050 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
10051 data_out_result) != 0x1);
10052 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
10053 reserved) != 0x2);
10054 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
10055 status) != 0x5);
10056 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
10057 status_qualifier) != 0x6);
10058 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
10059 sense_data_length) != 0x8);
10060 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
10061 response_data_length) != 0xa);
10062 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
10063 data_in_transferred) != 0xc);
10064 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
10065 data_out_transferred) != 0x10);
10066 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
10067 data) != 0x14);
10068 BUILD_BUG_ON(sizeof(struct pqi_raid_error_info) != 0x114);
10069
10070 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10071 signature) != 0x0);
10072 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10073 function_and_status_code) != 0x8);
10074 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10075 max_admin_iq_elements) != 0x10);
10076 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10077 max_admin_oq_elements) != 0x11);
10078 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10079 admin_iq_element_length) != 0x12);
10080 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10081 admin_oq_element_length) != 0x13);
10082 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10083 max_reset_timeout) != 0x14);
10084 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10085 legacy_intx_status) != 0x18);
10086 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10087 legacy_intx_mask_set) != 0x1c);
10088 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10089 legacy_intx_mask_clear) != 0x20);
10090 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10091 device_status) != 0x40);
10092 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10093 admin_iq_pi_offset) != 0x48);
10094 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10095 admin_oq_ci_offset) != 0x50);
10096 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10097 admin_iq_element_array_addr) != 0x58);
10098 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10099 admin_oq_element_array_addr) != 0x60);
10100 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10101 admin_iq_ci_addr) != 0x68);
10102 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10103 admin_oq_pi_addr) != 0x70);
10104 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10105 admin_iq_num_elements) != 0x78);
10106 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10107 admin_oq_num_elements) != 0x79);
10108 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10109 admin_queue_int_msg_num) != 0x7a);
10110 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10111 device_error) != 0x80);
10112 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10113 error_details) != 0x88);
10114 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10115 device_reset) != 0x90);
10116 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
10117 power_action) != 0x94);
10118 BUILD_BUG_ON(sizeof(struct pqi_device_registers) != 0x100);
10119
10120 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10121 header.iu_type) != 0);
10122 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10123 header.iu_length) != 2);
10124 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10125 header.driver_flags) != 6);
10126 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10127 request_id) != 8);
10128 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10129 function_code) != 10);
10130 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10131 data.report_device_capability.buffer_length) != 44);
10132 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10133 data.report_device_capability.sg_descriptor) != 48);
10134 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10135 data.create_operational_iq.queue_id) != 12);
10136 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10137 data.create_operational_iq.element_array_addr) != 16);
10138 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10139 data.create_operational_iq.ci_addr) != 24);
10140 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10141 data.create_operational_iq.num_elements) != 32);
10142 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10143 data.create_operational_iq.element_length) != 34);
10144 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10145 data.create_operational_iq.queue_protocol) != 36);
10146 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10147 data.create_operational_oq.queue_id) != 12);
10148 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10149 data.create_operational_oq.element_array_addr) != 16);
10150 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10151 data.create_operational_oq.pi_addr) != 24);
10152 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10153 data.create_operational_oq.num_elements) != 32);
10154 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10155 data.create_operational_oq.element_length) != 34);
10156 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10157 data.create_operational_oq.queue_protocol) != 36);
10158 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10159 data.create_operational_oq.int_msg_num) != 40);
10160 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10161 data.create_operational_oq.coalescing_count) != 42);
10162 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10163 data.create_operational_oq.min_coalescing_time) != 44);
10164 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10165 data.create_operational_oq.max_coalescing_time) != 48);
10166 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
10167 data.delete_operational_queue.queue_id) != 12);
10168 BUILD_BUG_ON(sizeof(struct pqi_general_admin_request) != 64);
10169 BUILD_BUG_ON(sizeof_field(struct pqi_general_admin_request,
10170 data.create_operational_iq) != 64 - 11);
10171 BUILD_BUG_ON(sizeof_field(struct pqi_general_admin_request,
10172 data.create_operational_oq) != 64 - 11);
10173 BUILD_BUG_ON(sizeof_field(struct pqi_general_admin_request,
10174 data.delete_operational_queue) != 64 - 11);
10175
10176 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
10177 header.iu_type) != 0);
10178 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
10179 header.iu_length) != 2);
10180 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
10181 header.driver_flags) != 6);
10182 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
10183 request_id) != 8);
10184 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
10185 function_code) != 10);
10186 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
10187 status) != 11);
10188 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
10189 data.create_operational_iq.status_descriptor) != 12);
10190 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
10191 data.create_operational_iq.iq_pi_offset) != 16);
10192 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
10193 data.create_operational_oq.status_descriptor) != 12);
10194 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
10195 data.create_operational_oq.oq_ci_offset) != 16);
10196 BUILD_BUG_ON(sizeof(struct pqi_general_admin_response) != 64);
10197
10198 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
10199 header.iu_type) != 0);
10200 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
10201 header.iu_length) != 2);
10202 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
10203 header.response_queue_id) != 4);
10204 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
10205 header.driver_flags) != 6);
10206 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
10207 request_id) != 8);
10208 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
10209 nexus_id) != 10);
10210 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
10211 buffer_length) != 12);
10212 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
10213 lun_number) != 16);
10214 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
10215 protocol_specific) != 24);
10216 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
10217 error_index) != 27);
10218 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
10219 cdb) != 32);
10220 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
10221 timeout) != 60);
10222 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
10223 sg_descriptors) != 64);
10224 BUILD_BUG_ON(sizeof(struct pqi_raid_path_request) !=
10225 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
10226
10227 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
10228 header.iu_type) != 0);
10229 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
10230 header.iu_length) != 2);
10231 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
10232 header.response_queue_id) != 4);
10233 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
10234 header.driver_flags) != 6);
10235 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
10236 request_id) != 8);
10237 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
10238 nexus_id) != 12);
10239 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
10240 buffer_length) != 16);
10241 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
10242 data_encryption_key_index) != 22);
10243 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
10244 encrypt_tweak_lower) != 24);
10245 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
10246 encrypt_tweak_upper) != 28);
10247 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
10248 cdb) != 32);
10249 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
10250 error_index) != 48);
10251 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
10252 num_sg_descriptors) != 50);
10253 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
10254 cdb_length) != 51);
10255 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
10256 lun_number) != 52);
10257 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
10258 sg_descriptors) != 64);
10259 BUILD_BUG_ON(sizeof(struct pqi_aio_path_request) !=
10260 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
10261
10262 BUILD_BUG_ON(offsetof(struct pqi_io_response,
10263 header.iu_type) != 0);
10264 BUILD_BUG_ON(offsetof(struct pqi_io_response,
10265 header.iu_length) != 2);
10266 BUILD_BUG_ON(offsetof(struct pqi_io_response,
10267 request_id) != 8);
10268 BUILD_BUG_ON(offsetof(struct pqi_io_response,
10269 error_index) != 10);
10270
10271 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
10272 header.iu_type) != 0);
10273 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
10274 header.iu_length) != 2);
10275 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
10276 header.response_queue_id) != 4);
10277 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
10278 request_id) != 8);
10279 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
10280 data.report_event_configuration.buffer_length) != 12);
10281 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
10282 data.report_event_configuration.sg_descriptors) != 16);
10283 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
10284 data.set_event_configuration.global_event_oq_id) != 10);
10285 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
10286 data.set_event_configuration.buffer_length) != 12);
10287 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
10288 data.set_event_configuration.sg_descriptors) != 16);
10289
10290 BUILD_BUG_ON(offsetof(struct pqi_iu_layer_descriptor,
10291 max_inbound_iu_length) != 6);
10292 BUILD_BUG_ON(offsetof(struct pqi_iu_layer_descriptor,
10293 max_outbound_iu_length) != 14);
10294 BUILD_BUG_ON(sizeof(struct pqi_iu_layer_descriptor) != 16);
10295
10296 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
10297 data_length) != 0);
10298 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
10299 iq_arbitration_priority_support_bitmask) != 8);
10300 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
10301 maximum_aw_a) != 9);
10302 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
10303 maximum_aw_b) != 10);
10304 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
10305 maximum_aw_c) != 11);
10306 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
10307 max_inbound_queues) != 16);
10308 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
10309 max_elements_per_iq) != 18);
10310 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
10311 max_iq_element_length) != 24);
10312 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
10313 min_iq_element_length) != 26);
10314 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
10315 max_outbound_queues) != 30);
10316 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
10317 max_elements_per_oq) != 32);
10318 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
10319 intr_coalescing_time_granularity) != 34);
10320 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
10321 max_oq_element_length) != 36);
10322 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
10323 min_oq_element_length) != 38);
10324 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
10325 iu_layer_descriptors) != 64);
10326 BUILD_BUG_ON(sizeof(struct pqi_device_capability) != 576);
10327
10328 BUILD_BUG_ON(offsetof(struct pqi_event_descriptor,
10329 event_type) != 0);
10330 BUILD_BUG_ON(offsetof(struct pqi_event_descriptor,
10331 oq_id) != 2);
10332 BUILD_BUG_ON(sizeof(struct pqi_event_descriptor) != 4);
10333
10334 BUILD_BUG_ON(offsetof(struct pqi_event_config,
10335 num_event_descriptors) != 2);
10336 BUILD_BUG_ON(offsetof(struct pqi_event_config,
10337 descriptors) != 4);
10338
10339 BUILD_BUG_ON(PQI_NUM_SUPPORTED_EVENTS !=
10340 ARRAY_SIZE(pqi_supported_event_types));
10341
10342 BUILD_BUG_ON(offsetof(struct pqi_event_response,
10343 header.iu_type) != 0);
10344 BUILD_BUG_ON(offsetof(struct pqi_event_response,
10345 header.iu_length) != 2);
10346 BUILD_BUG_ON(offsetof(struct pqi_event_response,
10347 event_type) != 8);
10348 BUILD_BUG_ON(offsetof(struct pqi_event_response,
10349 event_id) != 10);
10350 BUILD_BUG_ON(offsetof(struct pqi_event_response,
10351 additional_event_id) != 12);
10352 BUILD_BUG_ON(offsetof(struct pqi_event_response,
10353 data) != 16);
10354 BUILD_BUG_ON(sizeof(struct pqi_event_response) != 32);
10355
10356 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
10357 header.iu_type) != 0);
10358 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
10359 header.iu_length) != 2);
10360 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
10361 event_type) != 8);
10362 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
10363 event_id) != 10);
10364 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
10365 additional_event_id) != 12);
10366 BUILD_BUG_ON(sizeof(struct pqi_event_acknowledge_request) != 16);
10367
10368 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
10369 header.iu_type) != 0);
10370 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
10371 header.iu_length) != 2);
10372 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
10373 request_id) != 8);
10374 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
10375 nexus_id) != 10);
10376 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
10377 timeout) != 14);
10378 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
10379 lun_number) != 16);
10380 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
10381 protocol_specific) != 24);
10382 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
10383 outbound_queue_id_to_manage) != 26);
10384 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
10385 request_id_to_manage) != 28);
10386 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
10387 task_management_function) != 30);
10388 BUILD_BUG_ON(sizeof(struct pqi_task_management_request) != 32);
10389
10390 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
10391 header.iu_type) != 0);
10392 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
10393 header.iu_length) != 2);
10394 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
10395 request_id) != 8);
10396 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
10397 nexus_id) != 10);
10398 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
10399 additional_response_info) != 12);
10400 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
10401 response_code) != 15);
10402 BUILD_BUG_ON(sizeof(struct pqi_task_management_response) != 16);
10403
10404 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
10405 configured_logical_drive_count) != 0);
10406 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
10407 configuration_signature) != 1);
10408 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
10409 firmware_version_short) != 5);
10410 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
10411 extended_logical_unit_count) != 154);
10412 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
10413 firmware_build_number) != 190);
10414 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
10415 vendor_id) != 200);
10416 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
10417 product_id) != 208);
10418 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
10419 extra_controller_flags) != 286);
10420 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
10421 controller_mode) != 292);
10422 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
10423 spare_part_number) != 293);
10424 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
10425 firmware_version_long) != 325);
10426
10427 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
10428 phys_bay_in_box) != 115);
10429 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
10430 device_type) != 120);
10431 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
10432 redundant_path_present_map) != 1736);
10433 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
10434 active_path_number) != 1738);
10435 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
10436 alternate_paths_phys_connector) != 1739);
10437 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
10438 alternate_paths_phys_box_on_port) != 1755);
10439 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
10440 current_queue_depth_limit) != 1796);
10441 BUILD_BUG_ON(sizeof(struct bmic_identify_physical_device) != 2560);
10442
10443 BUILD_BUG_ON(sizeof(struct bmic_sense_feature_buffer_header) != 4);
10444 BUILD_BUG_ON(offsetof(struct bmic_sense_feature_buffer_header,
10445 page_code) != 0);
10446 BUILD_BUG_ON(offsetof(struct bmic_sense_feature_buffer_header,
10447 subpage_code) != 1);
10448 BUILD_BUG_ON(offsetof(struct bmic_sense_feature_buffer_header,
10449 buffer_length) != 2);
10450
10451 BUILD_BUG_ON(sizeof(struct bmic_sense_feature_page_header) != 4);
10452 BUILD_BUG_ON(offsetof(struct bmic_sense_feature_page_header,
10453 page_code) != 0);
10454 BUILD_BUG_ON(offsetof(struct bmic_sense_feature_page_header,
10455 subpage_code) != 1);
10456 BUILD_BUG_ON(offsetof(struct bmic_sense_feature_page_header,
10457 page_length) != 2);
10458
10459 BUILD_BUG_ON(sizeof(struct bmic_sense_feature_io_page_aio_subpage)
10460 != 18);
10461 BUILD_BUG_ON(offsetof(struct bmic_sense_feature_io_page_aio_subpage,
10462 header) != 0);
10463 BUILD_BUG_ON(offsetof(struct bmic_sense_feature_io_page_aio_subpage,
10464 firmware_read_support) != 4);
10465 BUILD_BUG_ON(offsetof(struct bmic_sense_feature_io_page_aio_subpage,
10466 driver_read_support) != 5);
10467 BUILD_BUG_ON(offsetof(struct bmic_sense_feature_io_page_aio_subpage,
10468 firmware_write_support) != 6);
10469 BUILD_BUG_ON(offsetof(struct bmic_sense_feature_io_page_aio_subpage,
10470 driver_write_support) != 7);
10471 BUILD_BUG_ON(offsetof(struct bmic_sense_feature_io_page_aio_subpage,
10472 max_transfer_encrypted_sas_sata) != 8);
10473 BUILD_BUG_ON(offsetof(struct bmic_sense_feature_io_page_aio_subpage,
10474 max_transfer_encrypted_nvme) != 10);
10475 BUILD_BUG_ON(offsetof(struct bmic_sense_feature_io_page_aio_subpage,
10476 max_write_raid_5_6) != 12);
10477 BUILD_BUG_ON(offsetof(struct bmic_sense_feature_io_page_aio_subpage,
10478 max_write_raid_1_10_2drive) != 14);
10479 BUILD_BUG_ON(offsetof(struct bmic_sense_feature_io_page_aio_subpage,
10480 max_write_raid_1_10_3drive) != 16);
10481
10482 BUILD_BUG_ON(PQI_ADMIN_IQ_NUM_ELEMENTS > 255);
10483 BUILD_BUG_ON(PQI_ADMIN_OQ_NUM_ELEMENTS > 255);
10484 BUILD_BUG_ON(PQI_ADMIN_IQ_ELEMENT_LENGTH %
10485 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0);
10486 BUILD_BUG_ON(PQI_ADMIN_OQ_ELEMENT_LENGTH %
10487 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0);
10488 BUILD_BUG_ON(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH > 1048560);
10489 BUILD_BUG_ON(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH %
10490 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0);
10491 BUILD_BUG_ON(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH > 1048560);
10492 BUILD_BUG_ON(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH %
10493 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0);
10494
10495 BUILD_BUG_ON(PQI_RESERVED_IO_SLOTS >= PQI_MAX_OUTSTANDING_REQUESTS);
10496 BUILD_BUG_ON(PQI_RESERVED_IO_SLOTS >=
10497 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP);
10498 }
10499
