2 * driver for Microsemi PQI-based storage controllers
3 * Copyright (c) 2016-2017 Microsemi Corporation
4 * Copyright (c) 2016 PMC-Sierra, Inc.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; version 2 of the License.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
13 * NON INFRINGEMENT. See the GNU General Public License for more details.
15 * Questions/Comments/Bugfixes to esc.storagedev@microsemi.com
19 #include <linux/module.h>
20 #include <linux/kernel.h>
21 #include <linux/pci.h>
22 #include <linux/delay.h>
23 #include <linux/interrupt.h>
24 #include <linux/sched.h>
25 #include <linux/rtc.h>
26 #include <linux/bcd.h>
27 #include <linux/reboot.h>
28 #include <linux/cciss_ioctl.h>
29 #include <linux/blk-mq-pci.h>
30 #include <scsi/scsi_host.h>
31 #include <scsi/scsi_cmnd.h>
32 #include <scsi/scsi_device.h>
33 #include <scsi/scsi_eh.h>
34 #include <scsi/scsi_transport_sas.h>
35 #include <asm/unaligned.h>
37 #include "smartpqi_sis.h"
39 #if !defined(BUILD_TIMESTAMP)
40 #define BUILD_TIMESTAMP
43 #define DRIVER_VERSION "1.2.4-070"
44 #define DRIVER_MAJOR 1
45 #define DRIVER_MINOR 2
46 #define DRIVER_RELEASE 4
47 #define DRIVER_REVISION 70
49 #define DRIVER_NAME "Microsemi PQI Driver (v" \
50 DRIVER_VERSION BUILD_TIMESTAMP ")"
51 #define DRIVER_NAME_SHORT "smartpqi"
53 #define PQI_EXTRA_SGL_MEMORY (12 * sizeof(struct pqi_sg_descriptor))
55 MODULE_AUTHOR("Microsemi");
56 MODULE_DESCRIPTION("Driver for Microsemi Smart Family Controller version "
58 MODULE_SUPPORTED_DEVICE("Microsemi Smart Family Controllers");
59 MODULE_VERSION(DRIVER_VERSION);
60 MODULE_LICENSE("GPL");
62 static void pqi_take_ctrl_offline(struct pqi_ctrl_info *ctrl_info);
63 static void pqi_ctrl_offline_worker(struct work_struct *work);
64 static void pqi_retry_raid_bypass_requests(struct pqi_ctrl_info *ctrl_info);
65 static int pqi_scan_scsi_devices(struct pqi_ctrl_info *ctrl_info);
66 static void pqi_scan_start(struct Scsi_Host *shost);
67 static void pqi_start_io(struct pqi_ctrl_info *ctrl_info,
68 struct pqi_queue_group *queue_group, enum pqi_io_path path,
69 struct pqi_io_request *io_request);
70 static int pqi_submit_raid_request_synchronous(struct pqi_ctrl_info *ctrl_info,
71 struct pqi_iu_header *request, unsigned int flags,
72 struct pqi_raid_error_info *error_info, unsigned long timeout_msecs);
73 static int pqi_aio_submit_io(struct pqi_ctrl_info *ctrl_info,
74 struct scsi_cmnd *scmd, u32 aio_handle, u8 *cdb,
75 unsigned int cdb_length, struct pqi_queue_group *queue_group,
76 struct pqi_encryption_info *encryption_info, bool raid_bypass);
77 static void pqi_ofa_ctrl_quiesce(struct pqi_ctrl_info *ctrl_info);
78 static void pqi_ofa_ctrl_unquiesce(struct pqi_ctrl_info *ctrl_info);
79 static int pqi_ofa_ctrl_restart(struct pqi_ctrl_info *ctrl_info);
80 static void pqi_ofa_setup_host_buffer(struct pqi_ctrl_info *ctrl_info,
82 static void pqi_ofa_free_host_buffer(struct pqi_ctrl_info *ctrl_info);
83 static int pqi_ofa_host_memory_update(struct pqi_ctrl_info *ctrl_info);
84 static int pqi_device_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info,
85 struct pqi_scsi_dev *device, unsigned long timeout_secs);
87 /* for flags argument to pqi_submit_raid_request_synchronous() */
88 #define PQI_SYNC_FLAGS_INTERRUPTABLE 0x1
90 static struct scsi_transport_template *pqi_sas_transport_template;
92 static atomic_t pqi_controller_count = ATOMIC_INIT(0);
94 enum pqi_lockup_action {
100 static enum pqi_lockup_action pqi_lockup_action = NONE;
103 enum pqi_lockup_action action;
105 } pqi_lockup_actions[] = {
120 static unsigned int pqi_supported_event_types[] = {
121 PQI_EVENT_TYPE_HOTPLUG,
122 PQI_EVENT_TYPE_HARDWARE,
123 PQI_EVENT_TYPE_PHYSICAL_DEVICE,
124 PQI_EVENT_TYPE_LOGICAL_DEVICE,
126 PQI_EVENT_TYPE_AIO_STATE_CHANGE,
127 PQI_EVENT_TYPE_AIO_CONFIG_CHANGE,
130 static int pqi_disable_device_id_wildcards;
131 module_param_named(disable_device_id_wildcards,
132 pqi_disable_device_id_wildcards, int, 0644);
133 MODULE_PARM_DESC(disable_device_id_wildcards,
134 "Disable device ID wildcards.");
136 static int pqi_disable_heartbeat;
137 module_param_named(disable_heartbeat,
138 pqi_disable_heartbeat, int, 0644);
139 MODULE_PARM_DESC(disable_heartbeat,
140 "Disable heartbeat.");
142 static int pqi_disable_ctrl_shutdown;
143 module_param_named(disable_ctrl_shutdown,
144 pqi_disable_ctrl_shutdown, int, 0644);
145 MODULE_PARM_DESC(disable_ctrl_shutdown,
146 "Disable controller shutdown when controller locked up.");
148 static char *pqi_lockup_action_param;
149 module_param_named(lockup_action,
150 pqi_lockup_action_param, charp, 0644);
151 MODULE_PARM_DESC(lockup_action, "Action to take when controller locked up.\n"
152 "\t\tSupported: none, reboot, panic\n"
153 "\t\tDefault: none");
155 static char *raid_levels[] = {
165 static char *pqi_raid_level_to_string(u8 raid_level)
167 if (raid_level < ARRAY_SIZE(raid_levels))
168 return raid_levels[raid_level];
170 return "RAID UNKNOWN";
175 #define SA_RAID_1 2 /* also used for RAID 10 */
176 #define SA_RAID_5 3 /* also used for RAID 50 */
178 #define SA_RAID_6 5 /* also used for RAID 60 */
179 #define SA_RAID_ADM 6 /* also used for RAID 1+0 ADM */
180 #define SA_RAID_MAX SA_RAID_ADM
181 #define SA_RAID_UNKNOWN 0xff
183 static inline void pqi_scsi_done(struct scsi_cmnd *scmd)
185 pqi_prep_for_scsi_done(scmd);
186 scmd->scsi_done(scmd);
189 static inline void pqi_disable_write_same(struct scsi_device *sdev)
191 sdev->no_write_same = 1;
194 static inline bool pqi_scsi3addr_equal(u8 *scsi3addr1, u8 *scsi3addr2)
196 return memcmp(scsi3addr1, scsi3addr2, 8) == 0;
199 static inline bool pqi_is_logical_device(struct pqi_scsi_dev *device)
201 return !device->is_physical_device;
204 static inline bool pqi_is_external_raid_addr(u8 *scsi3addr)
206 return scsi3addr[2] != 0;
209 static inline void pqi_check_ctrl_health(struct pqi_ctrl_info *ctrl_info)
211 if (ctrl_info->controller_online)
212 if (!sis_is_firmware_running(ctrl_info))
213 pqi_take_ctrl_offline(ctrl_info);
216 static inline bool pqi_is_hba_lunid(u8 *scsi3addr)
218 return pqi_scsi3addr_equal(scsi3addr, RAID_CTLR_LUNID);
221 static inline enum pqi_ctrl_mode pqi_get_ctrl_mode(
222 struct pqi_ctrl_info *ctrl_info)
224 return sis_read_driver_scratch(ctrl_info);
227 static inline void pqi_save_ctrl_mode(struct pqi_ctrl_info *ctrl_info,
228 enum pqi_ctrl_mode mode)
230 sis_write_driver_scratch(ctrl_info, mode);
233 static inline void pqi_ctrl_block_requests(struct pqi_ctrl_info *ctrl_info)
235 ctrl_info->block_requests = true;
236 scsi_block_requests(ctrl_info->scsi_host);
239 static inline void pqi_ctrl_unblock_requests(struct pqi_ctrl_info *ctrl_info)
241 ctrl_info->block_requests = false;
242 wake_up_all(&ctrl_info->block_requests_wait);
243 pqi_retry_raid_bypass_requests(ctrl_info);
244 scsi_unblock_requests(ctrl_info->scsi_host);
247 static unsigned long pqi_wait_if_ctrl_blocked(struct pqi_ctrl_info *ctrl_info,
248 unsigned long timeout_msecs)
250 unsigned long remaining_msecs;
252 if (!pqi_ctrl_blocked(ctrl_info))
253 return timeout_msecs;
255 atomic_inc(&ctrl_info->num_blocked_threads);
257 if (timeout_msecs == NO_TIMEOUT) {
258 wait_event(ctrl_info->block_requests_wait,
259 !pqi_ctrl_blocked(ctrl_info));
260 remaining_msecs = timeout_msecs;
262 unsigned long remaining_jiffies;
265 wait_event_timeout(ctrl_info->block_requests_wait,
266 !pqi_ctrl_blocked(ctrl_info),
267 msecs_to_jiffies(timeout_msecs));
268 remaining_msecs = jiffies_to_msecs(remaining_jiffies);
271 atomic_dec(&ctrl_info->num_blocked_threads);
273 return remaining_msecs;
276 static inline void pqi_ctrl_wait_until_quiesced(struct pqi_ctrl_info *ctrl_info)
278 while (atomic_read(&ctrl_info->num_busy_threads) >
279 atomic_read(&ctrl_info->num_blocked_threads))
280 usleep_range(1000, 2000);
283 static inline bool pqi_device_offline(struct pqi_scsi_dev *device)
285 return device->device_offline;
288 static inline void pqi_device_reset_start(struct pqi_scsi_dev *device)
290 device->in_reset = true;
293 static inline void pqi_device_reset_done(struct pqi_scsi_dev *device)
295 device->in_reset = false;
298 static inline bool pqi_device_in_reset(struct pqi_scsi_dev *device)
300 return device->in_reset;
303 static inline void pqi_ctrl_ofa_start(struct pqi_ctrl_info *ctrl_info)
305 ctrl_info->in_ofa = true;
308 static inline void pqi_ctrl_ofa_done(struct pqi_ctrl_info *ctrl_info)
310 ctrl_info->in_ofa = false;
313 static inline bool pqi_ctrl_in_ofa(struct pqi_ctrl_info *ctrl_info)
315 return ctrl_info->in_ofa;
318 static inline void pqi_device_remove_start(struct pqi_scsi_dev *device)
320 device->in_remove = true;
323 static inline bool pqi_device_in_remove(struct pqi_ctrl_info *ctrl_info,
324 struct pqi_scsi_dev *device)
326 return device->in_remove & !ctrl_info->in_shutdown;
329 static inline void pqi_schedule_rescan_worker_with_delay(
330 struct pqi_ctrl_info *ctrl_info, unsigned long delay)
332 if (pqi_ctrl_offline(ctrl_info))
334 if (pqi_ctrl_in_ofa(ctrl_info))
337 schedule_delayed_work(&ctrl_info->rescan_work, delay);
340 static inline void pqi_schedule_rescan_worker(struct pqi_ctrl_info *ctrl_info)
342 pqi_schedule_rescan_worker_with_delay(ctrl_info, 0);
345 #define PQI_RESCAN_WORK_DELAY (10 * PQI_HZ)
347 static inline void pqi_schedule_rescan_worker_delayed(
348 struct pqi_ctrl_info *ctrl_info)
350 pqi_schedule_rescan_worker_with_delay(ctrl_info, PQI_RESCAN_WORK_DELAY);
353 static inline void pqi_cancel_rescan_worker(struct pqi_ctrl_info *ctrl_info)
355 cancel_delayed_work_sync(&ctrl_info->rescan_work);
358 static inline u32 pqi_read_heartbeat_counter(struct pqi_ctrl_info *ctrl_info)
360 if (!ctrl_info->heartbeat_counter)
363 return readl(ctrl_info->heartbeat_counter);
366 static inline u8 pqi_read_soft_reset_status(struct pqi_ctrl_info *ctrl_info)
368 if (!ctrl_info->soft_reset_status)
371 return readb(ctrl_info->soft_reset_status);
374 static inline void pqi_clear_soft_reset_status(struct pqi_ctrl_info *ctrl_info,
379 if (!ctrl_info->soft_reset_status)
382 status = pqi_read_soft_reset_status(ctrl_info);
384 writeb(status, ctrl_info->soft_reset_status);
387 static int pqi_map_single(struct pci_dev *pci_dev,
388 struct pqi_sg_descriptor *sg_descriptor, void *buffer,
389 size_t buffer_length, enum dma_data_direction data_direction)
391 dma_addr_t bus_address;
393 if (!buffer || buffer_length == 0 || data_direction == DMA_NONE)
396 bus_address = dma_map_single(&pci_dev->dev, buffer, buffer_length,
398 if (dma_mapping_error(&pci_dev->dev, bus_address))
401 put_unaligned_le64((u64)bus_address, &sg_descriptor->address);
402 put_unaligned_le32(buffer_length, &sg_descriptor->length);
403 put_unaligned_le32(CISS_SG_LAST, &sg_descriptor->flags);
408 static void pqi_pci_unmap(struct pci_dev *pci_dev,
409 struct pqi_sg_descriptor *descriptors, int num_descriptors,
410 enum dma_data_direction data_direction)
414 if (data_direction == DMA_NONE)
417 for (i = 0; i < num_descriptors; i++)
418 dma_unmap_single(&pci_dev->dev,
419 (dma_addr_t)get_unaligned_le64(&descriptors[i].address),
420 get_unaligned_le32(&descriptors[i].length),
424 static int pqi_build_raid_path_request(struct pqi_ctrl_info *ctrl_info,
425 struct pqi_raid_path_request *request, u8 cmd,
426 u8 *scsi3addr, void *buffer, size_t buffer_length,
427 u16 vpd_page, enum dma_data_direction *dir)
430 size_t cdb_length = buffer_length;
432 memset(request, 0, sizeof(*request));
434 request->header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO;
435 put_unaligned_le16(offsetof(struct pqi_raid_path_request,
436 sg_descriptors[1]) - PQI_REQUEST_HEADER_LENGTH,
437 &request->header.iu_length);
438 put_unaligned_le32(buffer_length, &request->buffer_length);
439 memcpy(request->lun_number, scsi3addr, sizeof(request->lun_number));
440 request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
441 request->additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_0;
447 request->data_direction = SOP_READ_FLAG;
449 if (vpd_page & VPD_PAGE) {
451 cdb[2] = (u8)vpd_page;
453 cdb[4] = (u8)cdb_length;
455 case CISS_REPORT_LOG:
456 case CISS_REPORT_PHYS:
457 request->data_direction = SOP_READ_FLAG;
459 if (cmd == CISS_REPORT_PHYS)
460 cdb[1] = CISS_REPORT_PHYS_EXTENDED;
462 cdb[1] = CISS_REPORT_LOG_EXTENDED;
463 put_unaligned_be32(cdb_length, &cdb[6]);
465 case CISS_GET_RAID_MAP:
466 request->data_direction = SOP_READ_FLAG;
468 cdb[1] = CISS_GET_RAID_MAP;
469 put_unaligned_be32(cdb_length, &cdb[6]);
472 request->data_direction = SOP_WRITE_FLAG;
474 cdb[6] = BMIC_FLUSH_CACHE;
475 put_unaligned_be16(cdb_length, &cdb[7]);
477 case BMIC_SENSE_DIAG_OPTIONS:
480 case BMIC_IDENTIFY_CONTROLLER:
481 case BMIC_IDENTIFY_PHYSICAL_DEVICE:
482 request->data_direction = SOP_READ_FLAG;
485 put_unaligned_be16(cdb_length, &cdb[7]);
487 case BMIC_SET_DIAG_OPTIONS:
490 case BMIC_WRITE_HOST_WELLNESS:
491 request->data_direction = SOP_WRITE_FLAG;
494 put_unaligned_be16(cdb_length, &cdb[7]);
496 case BMIC_CSMI_PASSTHRU:
497 request->data_direction = SOP_BIDIRECTIONAL;
499 cdb[5] = CSMI_CC_SAS_SMP_PASSTHRU;
501 put_unaligned_be16(cdb_length, &cdb[7]);
504 dev_err(&ctrl_info->pci_dev->dev, "unknown command 0x%c\n",
509 switch (request->data_direction) {
511 *dir = DMA_FROM_DEVICE;
514 *dir = DMA_TO_DEVICE;
516 case SOP_NO_DIRECTION_FLAG:
520 *dir = DMA_BIDIRECTIONAL;
524 return pqi_map_single(ctrl_info->pci_dev, &request->sg_descriptors[0],
525 buffer, buffer_length, *dir);
528 static inline void pqi_reinit_io_request(struct pqi_io_request *io_request)
530 io_request->scmd = NULL;
531 io_request->status = 0;
532 io_request->error_info = NULL;
533 io_request->raid_bypass = false;
536 static struct pqi_io_request *pqi_alloc_io_request(
537 struct pqi_ctrl_info *ctrl_info)
539 struct pqi_io_request *io_request;
540 u16 i = ctrl_info->next_io_request_slot; /* benignly racy */
543 io_request = &ctrl_info->io_request_pool[i];
544 if (atomic_inc_return(&io_request->refcount) == 1)
546 atomic_dec(&io_request->refcount);
547 i = (i + 1) % ctrl_info->max_io_slots;
551 ctrl_info->next_io_request_slot = (i + 1) % ctrl_info->max_io_slots;
553 pqi_reinit_io_request(io_request);
558 static void pqi_free_io_request(struct pqi_io_request *io_request)
560 atomic_dec(&io_request->refcount);
563 static int pqi_send_scsi_raid_request(struct pqi_ctrl_info *ctrl_info, u8 cmd,
564 u8 *scsi3addr, void *buffer, size_t buffer_length, u16 vpd_page,
565 struct pqi_raid_error_info *error_info,
566 unsigned long timeout_msecs)
569 enum dma_data_direction dir;
570 struct pqi_raid_path_request request;
572 rc = pqi_build_raid_path_request(ctrl_info, &request,
573 cmd, scsi3addr, buffer,
574 buffer_length, vpd_page, &dir);
578 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
579 0, error_info, timeout_msecs);
581 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, dir);
585 /* Helper functions for pqi_send_scsi_raid_request */
587 static inline int pqi_send_ctrl_raid_request(struct pqi_ctrl_info *ctrl_info,
588 u8 cmd, void *buffer, size_t buffer_length)
590 return pqi_send_scsi_raid_request(ctrl_info, cmd, RAID_CTLR_LUNID,
591 buffer, buffer_length, 0, NULL, NO_TIMEOUT);
594 static inline int pqi_send_ctrl_raid_with_error(struct pqi_ctrl_info *ctrl_info,
595 u8 cmd, void *buffer, size_t buffer_length,
596 struct pqi_raid_error_info *error_info)
598 return pqi_send_scsi_raid_request(ctrl_info, cmd, RAID_CTLR_LUNID,
599 buffer, buffer_length, 0, error_info, NO_TIMEOUT);
603 static inline int pqi_identify_controller(struct pqi_ctrl_info *ctrl_info,
604 struct bmic_identify_controller *buffer)
606 return pqi_send_ctrl_raid_request(ctrl_info, BMIC_IDENTIFY_CONTROLLER,
607 buffer, sizeof(*buffer));
610 static inline int pqi_scsi_inquiry(struct pqi_ctrl_info *ctrl_info,
611 u8 *scsi3addr, u16 vpd_page, void *buffer, size_t buffer_length)
613 return pqi_send_scsi_raid_request(ctrl_info, INQUIRY, scsi3addr,
614 buffer, buffer_length, vpd_page, NULL, NO_TIMEOUT);
617 static bool pqi_vpd_page_supported(struct pqi_ctrl_info *ctrl_info,
618 u8 *scsi3addr, u16 vpd_page)
623 unsigned char *buf, bufsize;
625 buf = kzalloc(256, GFP_KERNEL);
629 /* Get the size of the page list first */
630 rc = pqi_scsi_inquiry(ctrl_info, scsi3addr,
631 VPD_PAGE | SCSI_VPD_SUPPORTED_PAGES,
632 buf, SCSI_VPD_HEADER_SZ);
634 goto exit_unsupported;
637 if ((pages + SCSI_VPD_HEADER_SZ) <= 255)
638 bufsize = pages + SCSI_VPD_HEADER_SZ;
642 /* Get the whole VPD page list */
643 rc = pqi_scsi_inquiry(ctrl_info, scsi3addr,
644 VPD_PAGE | SCSI_VPD_SUPPORTED_PAGES,
647 goto exit_unsupported;
650 for (i = 1; i <= pages; i++)
651 if (buf[3 + i] == vpd_page)
663 static int pqi_get_device_id(struct pqi_ctrl_info *ctrl_info,
664 u8 *scsi3addr, u8 *device_id, int buflen)
669 if (!pqi_vpd_page_supported(ctrl_info, scsi3addr, SCSI_VPD_DEVICE_ID))
670 return 1; /* function not supported */
672 buf = kzalloc(64, GFP_KERNEL);
676 rc = pqi_scsi_inquiry(ctrl_info, scsi3addr,
677 VPD_PAGE | SCSI_VPD_DEVICE_ID,
682 memcpy(device_id, &buf[SCSI_VPD_DEVICE_ID_IDX], buflen);
690 static int pqi_identify_physical_device(struct pqi_ctrl_info *ctrl_info,
691 struct pqi_scsi_dev *device,
692 struct bmic_identify_physical_device *buffer,
693 size_t buffer_length)
696 enum dma_data_direction dir;
697 u16 bmic_device_index;
698 struct pqi_raid_path_request request;
700 rc = pqi_build_raid_path_request(ctrl_info, &request,
701 BMIC_IDENTIFY_PHYSICAL_DEVICE, RAID_CTLR_LUNID, buffer,
702 buffer_length, 0, &dir);
706 bmic_device_index = CISS_GET_DRIVE_NUMBER(device->scsi3addr);
707 request.cdb[2] = (u8)bmic_device_index;
708 request.cdb[9] = (u8)(bmic_device_index >> 8);
710 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
711 0, NULL, NO_TIMEOUT);
713 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1, dir);
717 static int pqi_flush_cache(struct pqi_ctrl_info *ctrl_info,
718 enum bmic_flush_cache_shutdown_event shutdown_event)
721 struct bmic_flush_cache *flush_cache;
724 * Don't bother trying to flush the cache if the controller is
727 if (pqi_ctrl_offline(ctrl_info))
730 flush_cache = kzalloc(sizeof(*flush_cache), GFP_KERNEL);
734 flush_cache->shutdown_event = shutdown_event;
736 rc = pqi_send_ctrl_raid_request(ctrl_info, SA_FLUSH_CACHE, flush_cache,
737 sizeof(*flush_cache));
744 int pqi_csmi_smp_passthru(struct pqi_ctrl_info *ctrl_info,
745 struct bmic_csmi_smp_passthru_buffer *buffer, size_t buffer_length,
746 struct pqi_raid_error_info *error_info)
748 return pqi_send_ctrl_raid_with_error(ctrl_info, BMIC_CSMI_PASSTHRU,
749 buffer, buffer_length, error_info);
752 #define PQI_FETCH_PTRAID_DATA (1UL<<31)
754 static int pqi_set_diag_rescan(struct pqi_ctrl_info *ctrl_info)
757 struct bmic_diag_options *diag;
759 diag = kzalloc(sizeof(*diag), GFP_KERNEL);
763 rc = pqi_send_ctrl_raid_request(ctrl_info, BMIC_SENSE_DIAG_OPTIONS,
764 diag, sizeof(*diag));
768 diag->options |= cpu_to_le32(PQI_FETCH_PTRAID_DATA);
770 rc = pqi_send_ctrl_raid_request(ctrl_info, BMIC_SET_DIAG_OPTIONS,
771 diag, sizeof(*diag));
778 static inline int pqi_write_host_wellness(struct pqi_ctrl_info *ctrl_info,
779 void *buffer, size_t buffer_length)
781 return pqi_send_ctrl_raid_request(ctrl_info, BMIC_WRITE_HOST_WELLNESS,
782 buffer, buffer_length);
787 struct bmic_host_wellness_driver_version {
789 u8 driver_version_tag[2];
790 __le16 driver_version_length;
791 char driver_version[32];
792 u8 dont_write_tag[2];
798 static int pqi_write_driver_version_to_host_wellness(
799 struct pqi_ctrl_info *ctrl_info)
802 struct bmic_host_wellness_driver_version *buffer;
803 size_t buffer_length;
805 buffer_length = sizeof(*buffer);
807 buffer = kmalloc(buffer_length, GFP_KERNEL);
811 buffer->start_tag[0] = '<';
812 buffer->start_tag[1] = 'H';
813 buffer->start_tag[2] = 'W';
814 buffer->start_tag[3] = '>';
815 buffer->driver_version_tag[0] = 'D';
816 buffer->driver_version_tag[1] = 'V';
817 put_unaligned_le16(sizeof(buffer->driver_version),
818 &buffer->driver_version_length);
819 strncpy(buffer->driver_version, "Linux " DRIVER_VERSION,
820 sizeof(buffer->driver_version) - 1);
821 buffer->driver_version[sizeof(buffer->driver_version) - 1] = '\0';
822 buffer->dont_write_tag[0] = 'D';
823 buffer->dont_write_tag[1] = 'W';
824 buffer->end_tag[0] = 'Z';
825 buffer->end_tag[1] = 'Z';
827 rc = pqi_write_host_wellness(ctrl_info, buffer, buffer_length);
836 struct bmic_host_wellness_time {
841 u8 dont_write_tag[2];
847 static int pqi_write_current_time_to_host_wellness(
848 struct pqi_ctrl_info *ctrl_info)
851 struct bmic_host_wellness_time *buffer;
852 size_t buffer_length;
857 buffer_length = sizeof(*buffer);
859 buffer = kmalloc(buffer_length, GFP_KERNEL);
863 buffer->start_tag[0] = '<';
864 buffer->start_tag[1] = 'H';
865 buffer->start_tag[2] = 'W';
866 buffer->start_tag[3] = '>';
867 buffer->time_tag[0] = 'T';
868 buffer->time_tag[1] = 'D';
869 put_unaligned_le16(sizeof(buffer->time),
870 &buffer->time_length);
872 local_time = ktime_get_real_seconds();
873 time64_to_tm(local_time, -sys_tz.tz_minuteswest * 60, &tm);
874 year = tm.tm_year + 1900;
876 buffer->time[0] = bin2bcd(tm.tm_hour);
877 buffer->time[1] = bin2bcd(tm.tm_min);
878 buffer->time[2] = bin2bcd(tm.tm_sec);
880 buffer->time[4] = bin2bcd(tm.tm_mon + 1);
881 buffer->time[5] = bin2bcd(tm.tm_mday);
882 buffer->time[6] = bin2bcd(year / 100);
883 buffer->time[7] = bin2bcd(year % 100);
885 buffer->dont_write_tag[0] = 'D';
886 buffer->dont_write_tag[1] = 'W';
887 buffer->end_tag[0] = 'Z';
888 buffer->end_tag[1] = 'Z';
890 rc = pqi_write_host_wellness(ctrl_info, buffer, buffer_length);
897 #define PQI_UPDATE_TIME_WORK_INTERVAL (24UL * 60 * 60 * PQI_HZ)
899 static void pqi_update_time_worker(struct work_struct *work)
902 struct pqi_ctrl_info *ctrl_info;
904 ctrl_info = container_of(to_delayed_work(work), struct pqi_ctrl_info,
907 if (pqi_ctrl_offline(ctrl_info))
910 rc = pqi_write_current_time_to_host_wellness(ctrl_info);
912 dev_warn(&ctrl_info->pci_dev->dev,
913 "error updating time on controller\n");
915 schedule_delayed_work(&ctrl_info->update_time_work,
916 PQI_UPDATE_TIME_WORK_INTERVAL);
919 static inline void pqi_schedule_update_time_worker(
920 struct pqi_ctrl_info *ctrl_info)
922 schedule_delayed_work(&ctrl_info->update_time_work, 0);
925 static inline void pqi_cancel_update_time_worker(
926 struct pqi_ctrl_info *ctrl_info)
928 cancel_delayed_work_sync(&ctrl_info->update_time_work);
931 static inline int pqi_report_luns(struct pqi_ctrl_info *ctrl_info, u8 cmd,
932 void *buffer, size_t buffer_length)
934 return pqi_send_ctrl_raid_request(ctrl_info, cmd, buffer,
938 static int pqi_report_phys_logical_luns(struct pqi_ctrl_info *ctrl_info, u8 cmd,
942 size_t lun_list_length;
943 size_t lun_data_length;
944 size_t new_lun_list_length;
945 void *lun_data = NULL;
946 struct report_lun_header *report_lun_header;
948 report_lun_header = kmalloc(sizeof(*report_lun_header), GFP_KERNEL);
949 if (!report_lun_header) {
954 rc = pqi_report_luns(ctrl_info, cmd, report_lun_header,
955 sizeof(*report_lun_header));
959 lun_list_length = get_unaligned_be32(&report_lun_header->list_length);
962 lun_data_length = sizeof(struct report_lun_header) + lun_list_length;
964 lun_data = kmalloc(lun_data_length, GFP_KERNEL);
970 if (lun_list_length == 0) {
971 memcpy(lun_data, report_lun_header, sizeof(*report_lun_header));
975 rc = pqi_report_luns(ctrl_info, cmd, lun_data, lun_data_length);
979 new_lun_list_length = get_unaligned_be32(
980 &((struct report_lun_header *)lun_data)->list_length);
982 if (new_lun_list_length > lun_list_length) {
983 lun_list_length = new_lun_list_length;
989 kfree(report_lun_header);
1001 static inline int pqi_report_phys_luns(struct pqi_ctrl_info *ctrl_info,
1004 return pqi_report_phys_logical_luns(ctrl_info, CISS_REPORT_PHYS,
1008 static inline int pqi_report_logical_luns(struct pqi_ctrl_info *ctrl_info,
1011 return pqi_report_phys_logical_luns(ctrl_info, CISS_REPORT_LOG, buffer);
1014 static int pqi_get_device_lists(struct pqi_ctrl_info *ctrl_info,
1015 struct report_phys_lun_extended **physdev_list,
1016 struct report_log_lun_extended **logdev_list)
1019 size_t logdev_list_length;
1020 size_t logdev_data_length;
1021 struct report_log_lun_extended *internal_logdev_list;
1022 struct report_log_lun_extended *logdev_data;
1023 struct report_lun_header report_lun_header;
1025 rc = pqi_report_phys_luns(ctrl_info, (void **)physdev_list);
1027 dev_err(&ctrl_info->pci_dev->dev,
1028 "report physical LUNs failed\n");
1030 rc = pqi_report_logical_luns(ctrl_info, (void **)logdev_list);
1032 dev_err(&ctrl_info->pci_dev->dev,
1033 "report logical LUNs failed\n");
1036 * Tack the controller itself onto the end of the logical device list.
1039 logdev_data = *logdev_list;
1042 logdev_list_length =
1043 get_unaligned_be32(&logdev_data->header.list_length);
1045 memset(&report_lun_header, 0, sizeof(report_lun_header));
1047 (struct report_log_lun_extended *)&report_lun_header;
1048 logdev_list_length = 0;
1051 logdev_data_length = sizeof(struct report_lun_header) +
1054 internal_logdev_list = kmalloc(logdev_data_length +
1055 sizeof(struct report_log_lun_extended), GFP_KERNEL);
1056 if (!internal_logdev_list) {
1057 kfree(*logdev_list);
1058 *logdev_list = NULL;
1062 memcpy(internal_logdev_list, logdev_data, logdev_data_length);
1063 memset((u8 *)internal_logdev_list + logdev_data_length, 0,
1064 sizeof(struct report_log_lun_extended_entry));
1065 put_unaligned_be32(logdev_list_length +
1066 sizeof(struct report_log_lun_extended_entry),
1067 &internal_logdev_list->header.list_length);
1069 kfree(*logdev_list);
1070 *logdev_list = internal_logdev_list;
1075 static inline void pqi_set_bus_target_lun(struct pqi_scsi_dev *device,
1076 int bus, int target, int lun)
1079 device->target = target;
1083 static void pqi_assign_bus_target_lun(struct pqi_scsi_dev *device)
1091 scsi3addr = device->scsi3addr;
1092 lunid = get_unaligned_le32(scsi3addr);
1094 if (pqi_is_hba_lunid(scsi3addr)) {
1095 /* The specified device is the controller. */
1096 pqi_set_bus_target_lun(device, PQI_HBA_BUS, 0, lunid & 0x3fff);
1097 device->target_lun_valid = true;
1101 if (pqi_is_logical_device(device)) {
1102 if (device->is_external_raid_device) {
1103 bus = PQI_EXTERNAL_RAID_VOLUME_BUS;
1104 target = (lunid >> 16) & 0x3fff;
1107 bus = PQI_RAID_VOLUME_BUS;
1109 lun = lunid & 0x3fff;
1111 pqi_set_bus_target_lun(device, bus, target, lun);
1112 device->target_lun_valid = true;
1117 * Defer target and LUN assignment for non-controller physical devices
1118 * because the SAS transport layer will make these assignments later.
1120 pqi_set_bus_target_lun(device, PQI_PHYSICAL_DEVICE_BUS, 0, 0);
1123 static void pqi_get_raid_level(struct pqi_ctrl_info *ctrl_info,
1124 struct pqi_scsi_dev *device)
1130 raid_level = SA_RAID_UNKNOWN;
1132 buffer = kmalloc(64, GFP_KERNEL);
1134 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr,
1135 VPD_PAGE | CISS_VPD_LV_DEVICE_GEOMETRY, buffer, 64);
1137 raid_level = buffer[8];
1138 if (raid_level > SA_RAID_MAX)
1139 raid_level = SA_RAID_UNKNOWN;
1144 device->raid_level = raid_level;
1147 static int pqi_validate_raid_map(struct pqi_ctrl_info *ctrl_info,
1148 struct pqi_scsi_dev *device, struct raid_map *raid_map)
1152 u32 r5or6_blocks_per_row;
1154 raid_map_size = get_unaligned_le32(&raid_map->structure_size);
1156 if (raid_map_size < offsetof(struct raid_map, disk_data)) {
1157 err_msg = "RAID map too small";
1161 if (device->raid_level == SA_RAID_1) {
1162 if (get_unaligned_le16(&raid_map->layout_map_count) != 2) {
1163 err_msg = "invalid RAID-1 map";
1166 } else if (device->raid_level == SA_RAID_ADM) {
1167 if (get_unaligned_le16(&raid_map->layout_map_count) != 3) {
1168 err_msg = "invalid RAID-1(ADM) map";
1171 } else if ((device->raid_level == SA_RAID_5 ||
1172 device->raid_level == SA_RAID_6) &&
1173 get_unaligned_le16(&raid_map->layout_map_count) > 1) {
1175 r5or6_blocks_per_row =
1176 get_unaligned_le16(&raid_map->strip_size) *
1177 get_unaligned_le16(&raid_map->data_disks_per_row);
1178 if (r5or6_blocks_per_row == 0) {
1179 err_msg = "invalid RAID-5 or RAID-6 map";
1187 dev_warn(&ctrl_info->pci_dev->dev,
1188 "logical device %08x%08x %s\n",
1189 *((u32 *)&device->scsi3addr),
1190 *((u32 *)&device->scsi3addr[4]), err_msg);
1195 static int pqi_get_raid_map(struct pqi_ctrl_info *ctrl_info,
1196 struct pqi_scsi_dev *device)
1200 struct raid_map *raid_map;
1202 raid_map = kmalloc(sizeof(*raid_map), GFP_KERNEL);
1206 rc = pqi_send_scsi_raid_request(ctrl_info, CISS_GET_RAID_MAP,
1207 device->scsi3addr, raid_map, sizeof(*raid_map),
1208 0, NULL, NO_TIMEOUT);
1213 raid_map_size = get_unaligned_le32(&raid_map->structure_size);
1215 if (raid_map_size > sizeof(*raid_map)) {
1219 raid_map = kmalloc(raid_map_size, GFP_KERNEL);
1223 rc = pqi_send_scsi_raid_request(ctrl_info, CISS_GET_RAID_MAP,
1224 device->scsi3addr, raid_map, raid_map_size,
1225 0, NULL, NO_TIMEOUT);
1229 if (get_unaligned_le32(&raid_map->structure_size)
1231 dev_warn(&ctrl_info->pci_dev->dev,
1232 "Requested %d bytes, received %d bytes",
1234 get_unaligned_le32(&raid_map->structure_size));
1239 rc = pqi_validate_raid_map(ctrl_info, device, raid_map);
1243 device->raid_map = raid_map;
1253 static void pqi_get_raid_bypass_status(struct pqi_ctrl_info *ctrl_info,
1254 struct pqi_scsi_dev *device)
1260 buffer = kmalloc(64, GFP_KERNEL);
1264 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr,
1265 VPD_PAGE | CISS_VPD_LV_BYPASS_STATUS, buffer, 64);
1269 #define RAID_BYPASS_STATUS 4
1270 #define RAID_BYPASS_CONFIGURED 0x1
1271 #define RAID_BYPASS_ENABLED 0x2
1273 bypass_status = buffer[RAID_BYPASS_STATUS];
1274 device->raid_bypass_configured =
1275 (bypass_status & RAID_BYPASS_CONFIGURED) != 0;
1276 if (device->raid_bypass_configured &&
1277 (bypass_status & RAID_BYPASS_ENABLED) &&
1278 pqi_get_raid_map(ctrl_info, device) == 0)
1279 device->raid_bypass_enabled = true;
1286 * Use vendor-specific VPD to determine online/offline status of a volume.
1289 static void pqi_get_volume_status(struct pqi_ctrl_info *ctrl_info,
1290 struct pqi_scsi_dev *device)
1294 u8 volume_status = CISS_LV_STATUS_UNAVAILABLE;
1295 bool volume_offline = true;
1297 struct ciss_vpd_logical_volume_status *vpd;
1299 vpd = kmalloc(sizeof(*vpd), GFP_KERNEL);
1303 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr,
1304 VPD_PAGE | CISS_VPD_LV_STATUS, vpd, sizeof(*vpd));
1308 if (vpd->page_code != CISS_VPD_LV_STATUS)
1311 page_length = offsetof(struct ciss_vpd_logical_volume_status,
1312 volume_status) + vpd->page_length;
1313 if (page_length < sizeof(*vpd))
1316 volume_status = vpd->volume_status;
1317 volume_flags = get_unaligned_be32(&vpd->flags);
1318 volume_offline = (volume_flags & CISS_LV_FLAGS_NO_HOST_IO) != 0;
1323 device->volume_status = volume_status;
1324 device->volume_offline = volume_offline;
1327 #define PQI_INQUIRY_PAGE0_RETRIES 3
1329 static int pqi_get_device_info(struct pqi_ctrl_info *ctrl_info,
1330 struct pqi_scsi_dev *device)
1334 unsigned int retries;
1336 if (device->is_expander_smp_device)
1339 buffer = kmalloc(64, GFP_KERNEL);
1343 /* Send an inquiry to the device to see what it is. */
1344 for (retries = 0;;) {
1345 rc = pqi_scsi_inquiry(ctrl_info, device->scsi3addr, 0,
1349 if (pqi_is_logical_device(device) ||
1350 rc != PQI_CMD_STATUS_ABORTED ||
1351 ++retries > PQI_INQUIRY_PAGE0_RETRIES)
1355 scsi_sanitize_inquiry_string(&buffer[8], 8);
1356 scsi_sanitize_inquiry_string(&buffer[16], 16);
1358 device->devtype = buffer[0] & 0x1f;
1359 memcpy(device->vendor, &buffer[8], sizeof(device->vendor));
1360 memcpy(device->model, &buffer[16], sizeof(device->model));
1362 if (pqi_is_logical_device(device) && device->devtype == TYPE_DISK) {
1363 if (device->is_external_raid_device) {
1364 device->raid_level = SA_RAID_UNKNOWN;
1365 device->volume_status = CISS_LV_OK;
1366 device->volume_offline = false;
1368 pqi_get_raid_level(ctrl_info, device);
1369 pqi_get_raid_bypass_status(ctrl_info, device);
1370 pqi_get_volume_status(ctrl_info, device);
1374 if (pqi_get_device_id(ctrl_info, device->scsi3addr,
1375 device->unique_id, sizeof(device->unique_id)) < 0)
1376 dev_warn(&ctrl_info->pci_dev->dev,
1377 "Can't get device id for scsi %d:%d:%d:%d\n",
1378 ctrl_info->scsi_host->host_no,
1379 device->bus, device->target,
1388 static void pqi_get_physical_disk_info(struct pqi_ctrl_info *ctrl_info,
1389 struct pqi_scsi_dev *device,
1390 struct bmic_identify_physical_device *id_phys)
1394 memset(id_phys, 0, sizeof(*id_phys));
1396 rc = pqi_identify_physical_device(ctrl_info, device,
1397 id_phys, sizeof(*id_phys));
1399 device->queue_depth = PQI_PHYSICAL_DISK_DEFAULT_MAX_QUEUE_DEPTH;
1403 device->queue_depth =
1404 get_unaligned_le16(&id_phys->current_queue_depth_limit);
1405 device->device_type = id_phys->device_type;
1406 device->active_path_index = id_phys->active_path_number;
1407 device->path_map = id_phys->redundant_path_present_map;
1408 memcpy(&device->box,
1409 &id_phys->alternate_paths_phys_box_on_port,
1410 sizeof(device->box));
1411 memcpy(&device->phys_connector,
1412 &id_phys->alternate_paths_phys_connector,
1413 sizeof(device->phys_connector));
1414 device->bay = id_phys->phys_bay_in_box;
1417 static void pqi_show_volume_status(struct pqi_ctrl_info *ctrl_info,
1418 struct pqi_scsi_dev *device)
1421 static const char unknown_state_str[] =
1422 "Volume is in an unknown state (%u)";
1423 char unknown_state_buffer[sizeof(unknown_state_str) + 10];
1425 switch (device->volume_status) {
1427 status = "Volume online";
1429 case CISS_LV_FAILED:
1430 status = "Volume failed";
1432 case CISS_LV_NOT_CONFIGURED:
1433 status = "Volume not configured";
1435 case CISS_LV_DEGRADED:
1436 status = "Volume degraded";
1438 case CISS_LV_READY_FOR_RECOVERY:
1439 status = "Volume ready for recovery operation";
1441 case CISS_LV_UNDERGOING_RECOVERY:
1442 status = "Volume undergoing recovery";
1444 case CISS_LV_WRONG_PHYSICAL_DRIVE_REPLACED:
1445 status = "Wrong physical drive was replaced";
1447 case CISS_LV_PHYSICAL_DRIVE_CONNECTION_PROBLEM:
1448 status = "A physical drive not properly connected";
1450 case CISS_LV_HARDWARE_OVERHEATING:
1451 status = "Hardware is overheating";
1453 case CISS_LV_HARDWARE_HAS_OVERHEATED:
1454 status = "Hardware has overheated";
1456 case CISS_LV_UNDERGOING_EXPANSION:
1457 status = "Volume undergoing expansion";
1459 case CISS_LV_NOT_AVAILABLE:
1460 status = "Volume waiting for transforming volume";
1462 case CISS_LV_QUEUED_FOR_EXPANSION:
1463 status = "Volume queued for expansion";
1465 case CISS_LV_DISABLED_SCSI_ID_CONFLICT:
1466 status = "Volume disabled due to SCSI ID conflict";
1468 case CISS_LV_EJECTED:
1469 status = "Volume has been ejected";
1471 case CISS_LV_UNDERGOING_ERASE:
1472 status = "Volume undergoing background erase";
1474 case CISS_LV_READY_FOR_PREDICTIVE_SPARE_REBUILD:
1475 status = "Volume ready for predictive spare rebuild";
1477 case CISS_LV_UNDERGOING_RPI:
1478 status = "Volume undergoing rapid parity initialization";
1480 case CISS_LV_PENDING_RPI:
1481 status = "Volume queued for rapid parity initialization";
1483 case CISS_LV_ENCRYPTED_NO_KEY:
1484 status = "Encrypted volume inaccessible - key not present";
1486 case CISS_LV_UNDERGOING_ENCRYPTION:
1487 status = "Volume undergoing encryption process";
1489 case CISS_LV_UNDERGOING_ENCRYPTION_REKEYING:
1490 status = "Volume undergoing encryption re-keying process";
1492 case CISS_LV_ENCRYPTED_IN_NON_ENCRYPTED_CONTROLLER:
1493 status = "Volume encrypted but encryption is disabled";
1495 case CISS_LV_PENDING_ENCRYPTION:
1496 status = "Volume pending migration to encrypted state";
1498 case CISS_LV_PENDING_ENCRYPTION_REKEYING:
1499 status = "Volume pending encryption rekeying";
1501 case CISS_LV_NOT_SUPPORTED:
1502 status = "Volume not supported on this controller";
1504 case CISS_LV_STATUS_UNAVAILABLE:
1505 status = "Volume status not available";
1508 snprintf(unknown_state_buffer, sizeof(unknown_state_buffer),
1509 unknown_state_str, device->volume_status);
1510 status = unknown_state_buffer;
1514 dev_info(&ctrl_info->pci_dev->dev,
1515 "scsi %d:%d:%d:%d %s\n",
1516 ctrl_info->scsi_host->host_no,
1517 device->bus, device->target, device->lun, status);
1520 static void pqi_rescan_worker(struct work_struct *work)
1522 struct pqi_ctrl_info *ctrl_info;
1524 ctrl_info = container_of(to_delayed_work(work), struct pqi_ctrl_info,
1527 pqi_scan_scsi_devices(ctrl_info);
1530 static int pqi_add_device(struct pqi_ctrl_info *ctrl_info,
1531 struct pqi_scsi_dev *device)
1535 if (pqi_is_logical_device(device))
1536 rc = scsi_add_device(ctrl_info->scsi_host, device->bus,
1537 device->target, device->lun);
1539 rc = pqi_add_sas_device(ctrl_info->sas_host, device);
1544 #define PQI_PENDING_IO_TIMEOUT_SECS 20
1546 static inline void pqi_remove_device(struct pqi_ctrl_info *ctrl_info,
1547 struct pqi_scsi_dev *device)
1551 pqi_device_remove_start(device);
1553 rc = pqi_device_wait_for_pending_io(ctrl_info, device,
1554 PQI_PENDING_IO_TIMEOUT_SECS);
1556 dev_err(&ctrl_info->pci_dev->dev,
1557 "scsi %d:%d:%d:%d removing device with %d outstanding commands\n",
1558 ctrl_info->scsi_host->host_no, device->bus,
1559 device->target, device->lun,
1560 atomic_read(&device->scsi_cmds_outstanding));
1562 if (pqi_is_logical_device(device))
1563 scsi_remove_device(device->sdev);
1565 pqi_remove_sas_device(device);
1568 /* Assumes the SCSI device list lock is held. */
1570 static struct pqi_scsi_dev *pqi_find_scsi_dev(struct pqi_ctrl_info *ctrl_info,
1571 int bus, int target, int lun)
1573 struct pqi_scsi_dev *device;
1575 list_for_each_entry(device, &ctrl_info->scsi_device_list,
1576 scsi_device_list_entry)
1577 if (device->bus == bus && device->target == target &&
1584 static inline bool pqi_device_equal(struct pqi_scsi_dev *dev1,
1585 struct pqi_scsi_dev *dev2)
1587 if (dev1->is_physical_device != dev2->is_physical_device)
1590 if (dev1->is_physical_device)
1591 return dev1->wwid == dev2->wwid;
1593 return memcmp(dev1->volume_id, dev2->volume_id,
1594 sizeof(dev1->volume_id)) == 0;
1597 enum pqi_find_result {
1603 static enum pqi_find_result pqi_scsi_find_entry(struct pqi_ctrl_info *ctrl_info,
1604 struct pqi_scsi_dev *device_to_find,
1605 struct pqi_scsi_dev **matching_device)
1607 struct pqi_scsi_dev *device;
1609 list_for_each_entry(device, &ctrl_info->scsi_device_list,
1610 scsi_device_list_entry) {
1611 if (pqi_scsi3addr_equal(device_to_find->scsi3addr,
1612 device->scsi3addr)) {
1613 *matching_device = device;
1614 if (pqi_device_equal(device_to_find, device)) {
1615 if (device_to_find->volume_offline)
1616 return DEVICE_CHANGED;
1619 return DEVICE_CHANGED;
1623 return DEVICE_NOT_FOUND;
1626 static inline const char *pqi_device_type(struct pqi_scsi_dev *device)
1628 if (device->is_expander_smp_device)
1629 return "Enclosure SMP ";
1631 return scsi_device_type(device->devtype);
1634 #define PQI_DEV_INFO_BUFFER_LENGTH 128
1636 static void pqi_dev_info(struct pqi_ctrl_info *ctrl_info,
1637 char *action, struct pqi_scsi_dev *device)
1640 char buffer[PQI_DEV_INFO_BUFFER_LENGTH];
1642 count = snprintf(buffer, PQI_DEV_INFO_BUFFER_LENGTH,
1643 "%d:%d:", ctrl_info->scsi_host->host_no, device->bus);
1645 if (device->target_lun_valid)
1646 count += snprintf(buffer + count,
1647 PQI_DEV_INFO_BUFFER_LENGTH - count,
1652 count += snprintf(buffer + count,
1653 PQI_DEV_INFO_BUFFER_LENGTH - count,
1656 if (pqi_is_logical_device(device))
1657 count += snprintf(buffer + count,
1658 PQI_DEV_INFO_BUFFER_LENGTH - count,
1660 *((u32 *)&device->scsi3addr),
1661 *((u32 *)&device->scsi3addr[4]));
1663 count += snprintf(buffer + count,
1664 PQI_DEV_INFO_BUFFER_LENGTH - count,
1665 " %016llx", device->sas_address);
1667 count += snprintf(buffer + count, PQI_DEV_INFO_BUFFER_LENGTH - count,
1669 pqi_device_type(device),
1673 if (pqi_is_logical_device(device)) {
1674 if (device->devtype == TYPE_DISK)
1675 count += snprintf(buffer + count,
1676 PQI_DEV_INFO_BUFFER_LENGTH - count,
1677 "SSDSmartPathCap%c En%c %-12s",
1678 device->raid_bypass_configured ? '+' : '-',
1679 device->raid_bypass_enabled ? '+' : '-',
1680 pqi_raid_level_to_string(device->raid_level));
1682 count += snprintf(buffer + count,
1683 PQI_DEV_INFO_BUFFER_LENGTH - count,
1684 "AIO%c", device->aio_enabled ? '+' : '-');
1685 if (device->devtype == TYPE_DISK ||
1686 device->devtype == TYPE_ZBC)
1687 count += snprintf(buffer + count,
1688 PQI_DEV_INFO_BUFFER_LENGTH - count,
1689 " qd=%-6d", device->queue_depth);
1692 dev_info(&ctrl_info->pci_dev->dev, "%s %s\n", action, buffer);
1695 /* Assumes the SCSI device list lock is held. */
1697 static void pqi_scsi_update_device(struct pqi_scsi_dev *existing_device,
1698 struct pqi_scsi_dev *new_device)
1700 existing_device->devtype = new_device->devtype;
1701 existing_device->device_type = new_device->device_type;
1702 existing_device->bus = new_device->bus;
1703 if (new_device->target_lun_valid) {
1704 existing_device->target = new_device->target;
1705 existing_device->lun = new_device->lun;
1706 existing_device->target_lun_valid = true;
1709 /* By definition, the scsi3addr and wwid fields are already the same. */
1711 existing_device->is_physical_device = new_device->is_physical_device;
1712 existing_device->is_external_raid_device =
1713 new_device->is_external_raid_device;
1714 existing_device->is_expander_smp_device =
1715 new_device->is_expander_smp_device;
1716 existing_device->aio_enabled = new_device->aio_enabled;
1717 memcpy(existing_device->vendor, new_device->vendor,
1718 sizeof(existing_device->vendor));
1719 memcpy(existing_device->model, new_device->model,
1720 sizeof(existing_device->model));
1721 existing_device->sas_address = new_device->sas_address;
1722 existing_device->raid_level = new_device->raid_level;
1723 existing_device->queue_depth = new_device->queue_depth;
1724 existing_device->aio_handle = new_device->aio_handle;
1725 existing_device->volume_status = new_device->volume_status;
1726 existing_device->active_path_index = new_device->active_path_index;
1727 existing_device->path_map = new_device->path_map;
1728 existing_device->bay = new_device->bay;
1729 memcpy(existing_device->box, new_device->box,
1730 sizeof(existing_device->box));
1731 memcpy(existing_device->phys_connector, new_device->phys_connector,
1732 sizeof(existing_device->phys_connector));
1733 existing_device->offload_to_mirror = 0;
1734 kfree(existing_device->raid_map);
1735 existing_device->raid_map = new_device->raid_map;
1736 existing_device->raid_bypass_configured =
1737 new_device->raid_bypass_configured;
1738 existing_device->raid_bypass_enabled =
1739 new_device->raid_bypass_enabled;
1740 existing_device->device_offline = false;
1742 /* To prevent this from being freed later. */
1743 new_device->raid_map = NULL;
1746 static inline void pqi_free_device(struct pqi_scsi_dev *device)
1749 kfree(device->raid_map);
1755 * Called when exposing a new device to the OS fails in order to re-adjust
1756 * our internal SCSI device list to match the SCSI ML's view.
1759 static inline void pqi_fixup_botched_add(struct pqi_ctrl_info *ctrl_info,
1760 struct pqi_scsi_dev *device)
1762 unsigned long flags;
1764 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
1765 list_del(&device->scsi_device_list_entry);
1766 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
1768 /* Allow the device structure to be freed later. */
1769 device->keep_device = false;
1772 static inline bool pqi_is_device_added(struct pqi_scsi_dev *device)
1774 if (device->is_expander_smp_device)
1775 return device->sas_port != NULL;
1777 return device->sdev != NULL;
1780 static void pqi_update_device_list(struct pqi_ctrl_info *ctrl_info,
1781 struct pqi_scsi_dev *new_device_list[], unsigned int num_new_devices)
1785 unsigned long flags;
1786 enum pqi_find_result find_result;
1787 struct pqi_scsi_dev *device;
1788 struct pqi_scsi_dev *next;
1789 struct pqi_scsi_dev *matching_device;
1790 LIST_HEAD(add_list);
1791 LIST_HEAD(delete_list);
1794 * The idea here is to do as little work as possible while holding the
1795 * spinlock. That's why we go to great pains to defer anything other
1796 * than updating the internal device list until after we release the
1800 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
1802 /* Assume that all devices in the existing list have gone away. */
1803 list_for_each_entry(device, &ctrl_info->scsi_device_list,
1804 scsi_device_list_entry)
1805 device->device_gone = true;
1807 for (i = 0; i < num_new_devices; i++) {
1808 device = new_device_list[i];
1810 find_result = pqi_scsi_find_entry(ctrl_info, device,
1813 switch (find_result) {
1816 * The newly found device is already in the existing
1819 device->new_device = false;
1820 matching_device->device_gone = false;
1821 pqi_scsi_update_device(matching_device, device);
1823 case DEVICE_NOT_FOUND:
1825 * The newly found device is NOT in the existing device
1828 device->new_device = true;
1830 case DEVICE_CHANGED:
1832 * The original device has gone away and we need to add
1835 device->new_device = true;
1840 /* Process all devices that have gone away. */
1841 list_for_each_entry_safe(device, next, &ctrl_info->scsi_device_list,
1842 scsi_device_list_entry) {
1843 if (device->device_gone) {
1844 list_del(&device->scsi_device_list_entry);
1845 list_add_tail(&device->delete_list_entry, &delete_list);
1849 /* Process all new devices. */
1850 for (i = 0; i < num_new_devices; i++) {
1851 device = new_device_list[i];
1852 if (!device->new_device)
1854 if (device->volume_offline)
1856 list_add_tail(&device->scsi_device_list_entry,
1857 &ctrl_info->scsi_device_list);
1858 list_add_tail(&device->add_list_entry, &add_list);
1859 /* To prevent this device structure from being freed later. */
1860 device->keep_device = true;
1863 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
1865 if (pqi_ctrl_in_ofa(ctrl_info))
1866 pqi_ctrl_ofa_done(ctrl_info);
1868 /* Remove all devices that have gone away. */
1869 list_for_each_entry_safe(device, next, &delete_list,
1870 delete_list_entry) {
1871 if (device->volume_offline) {
1872 pqi_dev_info(ctrl_info, "offline", device);
1873 pqi_show_volume_status(ctrl_info, device);
1875 pqi_dev_info(ctrl_info, "removed", device);
1877 if (pqi_is_device_added(device))
1878 pqi_remove_device(ctrl_info, device);
1879 list_del(&device->delete_list_entry);
1880 pqi_free_device(device);
1884 * Notify the SCSI ML if the queue depth of any existing device has
1887 list_for_each_entry(device, &ctrl_info->scsi_device_list,
1888 scsi_device_list_entry) {
1889 if (device->sdev && device->queue_depth !=
1890 device->advertised_queue_depth) {
1891 device->advertised_queue_depth = device->queue_depth;
1892 scsi_change_queue_depth(device->sdev,
1893 device->advertised_queue_depth);
1897 /* Expose any new devices. */
1898 list_for_each_entry_safe(device, next, &add_list, add_list_entry) {
1899 if (!pqi_is_device_added(device)) {
1900 pqi_dev_info(ctrl_info, "added", device);
1901 rc = pqi_add_device(ctrl_info, device);
1903 dev_warn(&ctrl_info->pci_dev->dev,
1904 "scsi %d:%d:%d:%d addition failed, device not added\n",
1905 ctrl_info->scsi_host->host_no,
1906 device->bus, device->target,
1908 pqi_fixup_botched_add(ctrl_info, device);
1914 static bool pqi_is_supported_device(struct pqi_scsi_dev *device)
1918 if (device->is_expander_smp_device)
1921 is_supported = false;
1923 switch (device->devtype) {
1927 case TYPE_MEDIUM_CHANGER:
1928 case TYPE_ENCLOSURE:
1929 is_supported = true;
1933 * Only support the HBA controller itself as a RAID
1934 * controller. If it's a RAID controller other than
1935 * the HBA itself (an external RAID controller, for
1936 * example), we don't support it.
1938 if (pqi_is_hba_lunid(device->scsi3addr))
1939 is_supported = true;
1943 return is_supported;
1946 static inline bool pqi_skip_device(u8 *scsi3addr)
1948 /* Ignore all masked devices. */
1949 if (MASKED_DEVICE(scsi3addr))
1955 static inline bool pqi_is_device_with_sas_address(struct pqi_scsi_dev *device)
1957 if (!device->is_physical_device)
1960 if (device->is_expander_smp_device)
1963 switch (device->devtype) {
1966 case TYPE_ENCLOSURE:
1973 static inline bool pqi_expose_device(struct pqi_scsi_dev *device)
1975 return !device->is_physical_device ||
1976 !pqi_skip_device(device->scsi3addr);
1979 static int pqi_update_scsi_devices(struct pqi_ctrl_info *ctrl_info)
1983 LIST_HEAD(new_device_list_head);
1984 struct report_phys_lun_extended *physdev_list = NULL;
1985 struct report_log_lun_extended *logdev_list = NULL;
1986 struct report_phys_lun_extended_entry *phys_lun_ext_entry;
1987 struct report_log_lun_extended_entry *log_lun_ext_entry;
1988 struct bmic_identify_physical_device *id_phys = NULL;
1991 struct pqi_scsi_dev **new_device_list = NULL;
1992 struct pqi_scsi_dev *device;
1993 struct pqi_scsi_dev *next;
1994 unsigned int num_new_devices;
1995 unsigned int num_valid_devices;
1996 bool is_physical_device;
1998 static char *out_of_memory_msg =
1999 "failed to allocate memory, device discovery stopped";
2001 rc = pqi_get_device_lists(ctrl_info, &physdev_list, &logdev_list);
2007 get_unaligned_be32(&physdev_list->header.list_length)
2008 / sizeof(physdev_list->lun_entries[0]);
2014 get_unaligned_be32(&logdev_list->header.list_length)
2015 / sizeof(logdev_list->lun_entries[0]);
2019 if (num_physicals) {
2021 * We need this buffer for calls to pqi_get_physical_disk_info()
2022 * below. We allocate it here instead of inside
2023 * pqi_get_physical_disk_info() because it's a fairly large
2026 id_phys = kmalloc(sizeof(*id_phys), GFP_KERNEL);
2028 dev_warn(&ctrl_info->pci_dev->dev, "%s\n",
2035 num_new_devices = num_physicals + num_logicals;
2037 new_device_list = kmalloc_array(num_new_devices,
2038 sizeof(*new_device_list),
2040 if (!new_device_list) {
2041 dev_warn(&ctrl_info->pci_dev->dev, "%s\n", out_of_memory_msg);
2046 for (i = 0; i < num_new_devices; i++) {
2047 device = kzalloc(sizeof(*device), GFP_KERNEL);
2049 dev_warn(&ctrl_info->pci_dev->dev, "%s\n",
2054 list_add_tail(&device->new_device_list_entry,
2055 &new_device_list_head);
2059 num_valid_devices = 0;
2061 for (i = 0; i < num_new_devices; i++) {
2063 if (i < num_physicals) {
2064 is_physical_device = true;
2065 phys_lun_ext_entry = &physdev_list->lun_entries[i];
2066 log_lun_ext_entry = NULL;
2067 scsi3addr = phys_lun_ext_entry->lunid;
2069 is_physical_device = false;
2070 phys_lun_ext_entry = NULL;
2072 &logdev_list->lun_entries[i - num_physicals];
2073 scsi3addr = log_lun_ext_entry->lunid;
2076 if (is_physical_device && pqi_skip_device(scsi3addr))
2080 device = list_next_entry(device, new_device_list_entry);
2082 device = list_first_entry(&new_device_list_head,
2083 struct pqi_scsi_dev, new_device_list_entry);
2085 memcpy(device->scsi3addr, scsi3addr, sizeof(device->scsi3addr));
2086 device->is_physical_device = is_physical_device;
2087 if (is_physical_device) {
2088 if (phys_lun_ext_entry->device_type ==
2089 SA_EXPANDER_SMP_DEVICE)
2090 device->is_expander_smp_device = true;
2092 device->is_external_raid_device =
2093 pqi_is_external_raid_addr(scsi3addr);
2096 /* Gather information about the device. */
2097 rc = pqi_get_device_info(ctrl_info, device);
2098 if (rc == -ENOMEM) {
2099 dev_warn(&ctrl_info->pci_dev->dev, "%s\n",
2104 if (device->is_physical_device)
2105 dev_warn(&ctrl_info->pci_dev->dev,
2106 "obtaining device info failed, skipping physical device %016llx\n",
2108 &phys_lun_ext_entry->wwid));
2110 dev_warn(&ctrl_info->pci_dev->dev,
2111 "obtaining device info failed, skipping logical device %08x%08x\n",
2112 *((u32 *)&device->scsi3addr),
2113 *((u32 *)&device->scsi3addr[4]));
2118 if (!pqi_is_supported_device(device))
2121 pqi_assign_bus_target_lun(device);
2123 if (device->is_physical_device) {
2124 device->wwid = phys_lun_ext_entry->wwid;
2125 if ((phys_lun_ext_entry->device_flags &
2126 REPORT_PHYS_LUN_DEV_FLAG_AIO_ENABLED) &&
2127 phys_lun_ext_entry->aio_handle) {
2128 device->aio_enabled = true;
2129 device->aio_handle =
2130 phys_lun_ext_entry->aio_handle;
2132 if (device->devtype == TYPE_DISK ||
2133 device->devtype == TYPE_ZBC) {
2134 pqi_get_physical_disk_info(ctrl_info,
2138 memcpy(device->volume_id, log_lun_ext_entry->volume_id,
2139 sizeof(device->volume_id));
2142 if (pqi_is_device_with_sas_address(device))
2143 device->sas_address = get_unaligned_be64(&device->wwid);
2145 new_device_list[num_valid_devices++] = device;
2148 pqi_update_device_list(ctrl_info, new_device_list, num_valid_devices);
2151 list_for_each_entry_safe(device, next, &new_device_list_head,
2152 new_device_list_entry) {
2153 if (device->keep_device)
2155 list_del(&device->new_device_list_entry);
2156 pqi_free_device(device);
2159 kfree(new_device_list);
2160 kfree(physdev_list);
2167 static void pqi_remove_all_scsi_devices(struct pqi_ctrl_info *ctrl_info)
2169 unsigned long flags;
2170 struct pqi_scsi_dev *device;
2173 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
2175 device = list_first_entry_or_null(&ctrl_info->scsi_device_list,
2176 struct pqi_scsi_dev, scsi_device_list_entry);
2178 list_del(&device->scsi_device_list_entry);
2180 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock,
2186 if (pqi_is_device_added(device))
2187 pqi_remove_device(ctrl_info, device);
2188 pqi_free_device(device);
2192 static int pqi_scan_scsi_devices(struct pqi_ctrl_info *ctrl_info)
2196 if (pqi_ctrl_offline(ctrl_info))
2199 mutex_lock(&ctrl_info->scan_mutex);
2201 rc = pqi_update_scsi_devices(ctrl_info);
2203 pqi_schedule_rescan_worker_delayed(ctrl_info);
2205 mutex_unlock(&ctrl_info->scan_mutex);
2210 static void pqi_scan_start(struct Scsi_Host *shost)
2212 struct pqi_ctrl_info *ctrl_info;
2214 ctrl_info = shost_to_hba(shost);
2215 if (pqi_ctrl_in_ofa(ctrl_info))
2218 pqi_scan_scsi_devices(ctrl_info);
2221 /* Returns TRUE if scan is finished. */
2223 static int pqi_scan_finished(struct Scsi_Host *shost,
2224 unsigned long elapsed_time)
2226 struct pqi_ctrl_info *ctrl_info;
2228 ctrl_info = shost_priv(shost);
2230 return !mutex_is_locked(&ctrl_info->scan_mutex);
2233 static void pqi_wait_until_scan_finished(struct pqi_ctrl_info *ctrl_info)
2235 mutex_lock(&ctrl_info->scan_mutex);
2236 mutex_unlock(&ctrl_info->scan_mutex);
2239 static void pqi_wait_until_lun_reset_finished(struct pqi_ctrl_info *ctrl_info)
2241 mutex_lock(&ctrl_info->lun_reset_mutex);
2242 mutex_unlock(&ctrl_info->lun_reset_mutex);
2245 static void pqi_wait_until_ofa_finished(struct pqi_ctrl_info *ctrl_info)
2247 mutex_lock(&ctrl_info->ofa_mutex);
2248 mutex_unlock(&ctrl_info->ofa_mutex);
2251 static inline void pqi_set_encryption_info(
2252 struct pqi_encryption_info *encryption_info, struct raid_map *raid_map,
2255 u32 volume_blk_size;
2258 * Set the encryption tweak values based on logical block address.
2259 * If the block size is 512, the tweak value is equal to the LBA.
2260 * For other block sizes, tweak value is (LBA * block size) / 512.
2262 volume_blk_size = get_unaligned_le32(&raid_map->volume_blk_size);
2263 if (volume_blk_size != 512)
2264 first_block = (first_block * volume_blk_size) / 512;
2266 encryption_info->data_encryption_key_index =
2267 get_unaligned_le16(&raid_map->data_encryption_key_index);
2268 encryption_info->encrypt_tweak_lower = lower_32_bits(first_block);
2269 encryption_info->encrypt_tweak_upper = upper_32_bits(first_block);
2273 * Attempt to perform RAID bypass mapping for a logical volume I/O.
2276 #define PQI_RAID_BYPASS_INELIGIBLE 1
2278 static int pqi_raid_bypass_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info,
2279 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
2280 struct pqi_queue_group *queue_group)
2282 struct raid_map *raid_map;
2283 bool is_write = false;
2291 u32 first_row_offset;
2292 u32 last_row_offset;
2297 u32 r5or6_blocks_per_row;
2298 u64 r5or6_first_row;
2300 u32 r5or6_first_row_offset;
2301 u32 r5or6_last_row_offset;
2302 u32 r5or6_first_column;
2303 u32 r5or6_last_column;
2304 u16 data_disks_per_row;
2305 u32 total_disks_per_row;
2306 u16 layout_map_count;
2318 int offload_to_mirror;
2319 struct pqi_encryption_info *encryption_info_ptr;
2320 struct pqi_encryption_info encryption_info;
2321 #if BITS_PER_LONG == 32
2325 /* Check for valid opcode, get LBA and block count. */
2326 switch (scmd->cmnd[0]) {
2331 first_block = (u64)(((scmd->cmnd[1] & 0x1f) << 16) |
2332 (scmd->cmnd[2] << 8) | scmd->cmnd[3]);
2333 block_cnt = (u32)scmd->cmnd[4];
2341 first_block = (u64)get_unaligned_be32(&scmd->cmnd[2]);
2342 block_cnt = (u32)get_unaligned_be16(&scmd->cmnd[7]);
2348 first_block = (u64)get_unaligned_be32(&scmd->cmnd[2]);
2349 block_cnt = get_unaligned_be32(&scmd->cmnd[6]);
2355 first_block = get_unaligned_be64(&scmd->cmnd[2]);
2356 block_cnt = get_unaligned_be32(&scmd->cmnd[10]);
2359 /* Process via normal I/O path. */
2360 return PQI_RAID_BYPASS_INELIGIBLE;
2363 /* Check for write to non-RAID-0. */
2364 if (is_write && device->raid_level != SA_RAID_0)
2365 return PQI_RAID_BYPASS_INELIGIBLE;
2367 if (unlikely(block_cnt == 0))
2368 return PQI_RAID_BYPASS_INELIGIBLE;
2370 last_block = first_block + block_cnt - 1;
2371 raid_map = device->raid_map;
2373 /* Check for invalid block or wraparound. */
2374 if (last_block >= get_unaligned_le64(&raid_map->volume_blk_cnt) ||
2375 last_block < first_block)
2376 return PQI_RAID_BYPASS_INELIGIBLE;
2378 data_disks_per_row = get_unaligned_le16(&raid_map->data_disks_per_row);
2379 strip_size = get_unaligned_le16(&raid_map->strip_size);
2380 layout_map_count = get_unaligned_le16(&raid_map->layout_map_count);
2382 /* Calculate stripe information for the request. */
2383 blocks_per_row = data_disks_per_row * strip_size;
2384 #if BITS_PER_LONG == 32
2385 tmpdiv = first_block;
2386 do_div(tmpdiv, blocks_per_row);
2388 tmpdiv = last_block;
2389 do_div(tmpdiv, blocks_per_row);
2391 first_row_offset = (u32)(first_block - (first_row * blocks_per_row));
2392 last_row_offset = (u32)(last_block - (last_row * blocks_per_row));
2393 tmpdiv = first_row_offset;
2394 do_div(tmpdiv, strip_size);
2395 first_column = tmpdiv;
2396 tmpdiv = last_row_offset;
2397 do_div(tmpdiv, strip_size);
2398 last_column = tmpdiv;
2400 first_row = first_block / blocks_per_row;
2401 last_row = last_block / blocks_per_row;
2402 first_row_offset = (u32)(first_block - (first_row * blocks_per_row));
2403 last_row_offset = (u32)(last_block - (last_row * blocks_per_row));
2404 first_column = first_row_offset / strip_size;
2405 last_column = last_row_offset / strip_size;
2408 /* If this isn't a single row/column then give to the controller. */
2409 if (first_row != last_row || first_column != last_column)
2410 return PQI_RAID_BYPASS_INELIGIBLE;
2412 /* Proceeding with driver mapping. */
2413 total_disks_per_row = data_disks_per_row +
2414 get_unaligned_le16(&raid_map->metadata_disks_per_row);
2415 map_row = ((u32)(first_row >> raid_map->parity_rotation_shift)) %
2416 get_unaligned_le16(&raid_map->row_cnt);
2417 map_index = (map_row * total_disks_per_row) + first_column;
2420 if (device->raid_level == SA_RAID_1) {
2421 if (device->offload_to_mirror)
2422 map_index += data_disks_per_row;
2423 device->offload_to_mirror = !device->offload_to_mirror;
2424 } else if (device->raid_level == SA_RAID_ADM) {
2427 * Handles N-way mirrors (R1-ADM) and R10 with # of drives
2430 offload_to_mirror = device->offload_to_mirror;
2431 if (offload_to_mirror == 0) {
2432 /* use physical disk in the first mirrored group. */
2433 map_index %= data_disks_per_row;
2437 * Determine mirror group that map_index
2440 current_group = map_index / data_disks_per_row;
2442 if (offload_to_mirror != current_group) {
2444 layout_map_count - 1) {
2446 * Select raid index from
2449 map_index += data_disks_per_row;
2453 * Select raid index from first
2456 map_index %= data_disks_per_row;
2460 } while (offload_to_mirror != current_group);
2463 /* Set mirror group to use next time. */
2465 (offload_to_mirror >= layout_map_count - 1) ?
2466 0 : offload_to_mirror + 1;
2467 WARN_ON(offload_to_mirror >= layout_map_count);
2468 device->offload_to_mirror = offload_to_mirror;
2470 * Avoid direct use of device->offload_to_mirror within this
2471 * function since multiple threads might simultaneously
2472 * increment it beyond the range of device->layout_map_count -1.
2474 } else if ((device->raid_level == SA_RAID_5 ||
2475 device->raid_level == SA_RAID_6) && layout_map_count > 1) {
2477 /* Verify first and last block are in same RAID group */
2478 r5or6_blocks_per_row = strip_size * data_disks_per_row;
2479 stripesize = r5or6_blocks_per_row * layout_map_count;
2480 #if BITS_PER_LONG == 32
2481 tmpdiv = first_block;
2482 first_group = do_div(tmpdiv, stripesize);
2483 tmpdiv = first_group;
2484 do_div(tmpdiv, r5or6_blocks_per_row);
2485 first_group = tmpdiv;
2486 tmpdiv = last_block;
2487 last_group = do_div(tmpdiv, stripesize);
2488 tmpdiv = last_group;
2489 do_div(tmpdiv, r5or6_blocks_per_row);
2490 last_group = tmpdiv;
2492 first_group = (first_block % stripesize) / r5or6_blocks_per_row;
2493 last_group = (last_block % stripesize) / r5or6_blocks_per_row;
2495 if (first_group != last_group)
2496 return PQI_RAID_BYPASS_INELIGIBLE;
2498 /* Verify request is in a single row of RAID 5/6 */
2499 #if BITS_PER_LONG == 32
2500 tmpdiv = first_block;
2501 do_div(tmpdiv, stripesize);
2502 first_row = r5or6_first_row = r0_first_row = tmpdiv;
2503 tmpdiv = last_block;
2504 do_div(tmpdiv, stripesize);
2505 r5or6_last_row = r0_last_row = tmpdiv;
2507 first_row = r5or6_first_row = r0_first_row =
2508 first_block / stripesize;
2509 r5or6_last_row = r0_last_row = last_block / stripesize;
2511 if (r5or6_first_row != r5or6_last_row)
2512 return PQI_RAID_BYPASS_INELIGIBLE;
2514 /* Verify request is in a single column */
2515 #if BITS_PER_LONG == 32
2516 tmpdiv = first_block;
2517 first_row_offset = do_div(tmpdiv, stripesize);
2518 tmpdiv = first_row_offset;
2519 first_row_offset = (u32)do_div(tmpdiv, r5or6_blocks_per_row);
2520 r5or6_first_row_offset = first_row_offset;
2521 tmpdiv = last_block;
2522 r5or6_last_row_offset = do_div(tmpdiv, stripesize);
2523 tmpdiv = r5or6_last_row_offset;
2524 r5or6_last_row_offset = do_div(tmpdiv, r5or6_blocks_per_row);
2525 tmpdiv = r5or6_first_row_offset;
2526 do_div(tmpdiv, strip_size);
2527 first_column = r5or6_first_column = tmpdiv;
2528 tmpdiv = r5or6_last_row_offset;
2529 do_div(tmpdiv, strip_size);
2530 r5or6_last_column = tmpdiv;
2532 first_row_offset = r5or6_first_row_offset =
2533 (u32)((first_block % stripesize) %
2534 r5or6_blocks_per_row);
2536 r5or6_last_row_offset =
2537 (u32)((last_block % stripesize) %
2538 r5or6_blocks_per_row);
2540 first_column = r5or6_first_row_offset / strip_size;
2541 r5or6_first_column = first_column;
2542 r5or6_last_column = r5or6_last_row_offset / strip_size;
2544 if (r5or6_first_column != r5or6_last_column)
2545 return PQI_RAID_BYPASS_INELIGIBLE;
2547 /* Request is eligible */
2549 ((u32)(first_row >> raid_map->parity_rotation_shift)) %
2550 get_unaligned_le16(&raid_map->row_cnt);
2552 map_index = (first_group *
2553 (get_unaligned_le16(&raid_map->row_cnt) *
2554 total_disks_per_row)) +
2555 (map_row * total_disks_per_row) + first_column;
2558 aio_handle = raid_map->disk_data[map_index].aio_handle;
2559 disk_block = get_unaligned_le64(&raid_map->disk_starting_blk) +
2560 first_row * strip_size +
2561 (first_row_offset - first_column * strip_size);
2562 disk_block_cnt = block_cnt;
2564 /* Handle differing logical/physical block sizes. */
2565 if (raid_map->phys_blk_shift) {
2566 disk_block <<= raid_map->phys_blk_shift;
2567 disk_block_cnt <<= raid_map->phys_blk_shift;
2570 if (unlikely(disk_block_cnt > 0xffff))
2571 return PQI_RAID_BYPASS_INELIGIBLE;
2573 /* Build the new CDB for the physical disk I/O. */
2574 if (disk_block > 0xffffffff) {
2575 cdb[0] = is_write ? WRITE_16 : READ_16;
2577 put_unaligned_be64(disk_block, &cdb[2]);
2578 put_unaligned_be32(disk_block_cnt, &cdb[10]);
2583 cdb[0] = is_write ? WRITE_10 : READ_10;
2585 put_unaligned_be32((u32)disk_block, &cdb[2]);
2587 put_unaligned_be16((u16)disk_block_cnt, &cdb[7]);
2592 if (get_unaligned_le16(&raid_map->flags) &
2593 RAID_MAP_ENCRYPTION_ENABLED) {
2594 pqi_set_encryption_info(&encryption_info, raid_map,
2596 encryption_info_ptr = &encryption_info;
2598 encryption_info_ptr = NULL;
2601 return pqi_aio_submit_io(ctrl_info, scmd, aio_handle,
2602 cdb, cdb_length, queue_group, encryption_info_ptr, true);
2605 #define PQI_STATUS_IDLE 0x0
2607 #define PQI_CREATE_ADMIN_QUEUE_PAIR 1
2608 #define PQI_DELETE_ADMIN_QUEUE_PAIR 2
2610 #define PQI_DEVICE_STATE_POWER_ON_AND_RESET 0x0
2611 #define PQI_DEVICE_STATE_STATUS_AVAILABLE 0x1
2612 #define PQI_DEVICE_STATE_ALL_REGISTERS_READY 0x2
2613 #define PQI_DEVICE_STATE_ADMIN_QUEUE_PAIR_READY 0x3
2614 #define PQI_DEVICE_STATE_ERROR 0x4
2616 #define PQI_MODE_READY_TIMEOUT_SECS 30
2617 #define PQI_MODE_READY_POLL_INTERVAL_MSECS 1
2619 static int pqi_wait_for_pqi_mode_ready(struct pqi_ctrl_info *ctrl_info)
2621 struct pqi_device_registers __iomem *pqi_registers;
2622 unsigned long timeout;
2626 pqi_registers = ctrl_info->pqi_registers;
2627 timeout = (PQI_MODE_READY_TIMEOUT_SECS * PQI_HZ) + jiffies;
2630 signature = readq(&pqi_registers->signature);
2631 if (memcmp(&signature, PQI_DEVICE_SIGNATURE,
2632 sizeof(signature)) == 0)
2634 if (time_after(jiffies, timeout)) {
2635 dev_err(&ctrl_info->pci_dev->dev,
2636 "timed out waiting for PQI signature\n");
2639 msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS);
2643 status = readb(&pqi_registers->function_and_status_code);
2644 if (status == PQI_STATUS_IDLE)
2646 if (time_after(jiffies, timeout)) {
2647 dev_err(&ctrl_info->pci_dev->dev,
2648 "timed out waiting for PQI IDLE\n");
2651 msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS);
2655 if (readl(&pqi_registers->device_status) ==
2656 PQI_DEVICE_STATE_ALL_REGISTERS_READY)
2658 if (time_after(jiffies, timeout)) {
2659 dev_err(&ctrl_info->pci_dev->dev,
2660 "timed out waiting for PQI all registers ready\n");
2663 msleep(PQI_MODE_READY_POLL_INTERVAL_MSECS);
2669 static inline void pqi_aio_path_disabled(struct pqi_io_request *io_request)
2671 struct pqi_scsi_dev *device;
2673 device = io_request->scmd->device->hostdata;
2674 device->raid_bypass_enabled = false;
2675 device->aio_enabled = false;
2678 static inline void pqi_take_device_offline(struct scsi_device *sdev, char *path)
2680 struct pqi_ctrl_info *ctrl_info;
2681 struct pqi_scsi_dev *device;
2683 device = sdev->hostdata;
2684 if (device->device_offline)
2687 device->device_offline = true;
2688 ctrl_info = shost_to_hba(sdev->host);
2689 pqi_schedule_rescan_worker(ctrl_info);
2690 dev_err(&ctrl_info->pci_dev->dev, "re-scanning %s scsi %d:%d:%d:%d\n",
2691 path, ctrl_info->scsi_host->host_no, device->bus,
2692 device->target, device->lun);
2695 static void pqi_process_raid_io_error(struct pqi_io_request *io_request)
2699 struct scsi_cmnd *scmd;
2700 struct pqi_raid_error_info *error_info;
2701 size_t sense_data_length;
2704 struct scsi_sense_hdr sshdr;
2706 scmd = io_request->scmd;
2710 error_info = io_request->error_info;
2711 scsi_status = error_info->status;
2714 switch (error_info->data_out_result) {
2715 case PQI_DATA_IN_OUT_GOOD:
2717 case PQI_DATA_IN_OUT_UNDERFLOW:
2719 get_unaligned_le32(&error_info->data_out_transferred);
2720 residual_count = scsi_bufflen(scmd) - xfer_count;
2721 scsi_set_resid(scmd, residual_count);
2722 if (xfer_count < scmd->underflow)
2723 host_byte = DID_SOFT_ERROR;
2725 case PQI_DATA_IN_OUT_UNSOLICITED_ABORT:
2726 case PQI_DATA_IN_OUT_ABORTED:
2727 host_byte = DID_ABORT;
2729 case PQI_DATA_IN_OUT_TIMEOUT:
2730 host_byte = DID_TIME_OUT;
2732 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW:
2733 case PQI_DATA_IN_OUT_PROTOCOL_ERROR:
2734 case PQI_DATA_IN_OUT_BUFFER_ERROR:
2735 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_DESCRIPTOR_AREA:
2736 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_BRIDGE:
2737 case PQI_DATA_IN_OUT_ERROR:
2738 case PQI_DATA_IN_OUT_HARDWARE_ERROR:
2739 case PQI_DATA_IN_OUT_PCIE_FABRIC_ERROR:
2740 case PQI_DATA_IN_OUT_PCIE_COMPLETION_TIMEOUT:
2741 case PQI_DATA_IN_OUT_PCIE_COMPLETER_ABORT_RECEIVED:
2742 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST_RECEIVED:
2743 case PQI_DATA_IN_OUT_PCIE_ECRC_CHECK_FAILED:
2744 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST:
2745 case PQI_DATA_IN_OUT_PCIE_ACS_VIOLATION:
2746 case PQI_DATA_IN_OUT_PCIE_TLP_PREFIX_BLOCKED:
2747 case PQI_DATA_IN_OUT_PCIE_POISONED_MEMORY_READ:
2749 host_byte = DID_ERROR;
2753 sense_data_length = get_unaligned_le16(&error_info->sense_data_length);
2754 if (sense_data_length == 0)
2756 get_unaligned_le16(&error_info->response_data_length);
2757 if (sense_data_length) {
2758 if (sense_data_length > sizeof(error_info->data))
2759 sense_data_length = sizeof(error_info->data);
2761 if (scsi_status == SAM_STAT_CHECK_CONDITION &&
2762 scsi_normalize_sense(error_info->data,
2763 sense_data_length, &sshdr) &&
2764 sshdr.sense_key == HARDWARE_ERROR &&
2765 sshdr.asc == 0x3e &&
2766 sshdr.ascq == 0x1) {
2767 pqi_take_device_offline(scmd->device, "RAID");
2768 host_byte = DID_NO_CONNECT;
2771 if (sense_data_length > SCSI_SENSE_BUFFERSIZE)
2772 sense_data_length = SCSI_SENSE_BUFFERSIZE;
2773 memcpy(scmd->sense_buffer, error_info->data,
2777 scmd->result = scsi_status;
2778 set_host_byte(scmd, host_byte);
2781 static void pqi_process_aio_io_error(struct pqi_io_request *io_request)
2785 struct scsi_cmnd *scmd;
2786 struct pqi_aio_error_info *error_info;
2787 size_t sense_data_length;
2790 bool device_offline;
2792 scmd = io_request->scmd;
2793 error_info = io_request->error_info;
2795 sense_data_length = 0;
2796 device_offline = false;
2798 switch (error_info->service_response) {
2799 case PQI_AIO_SERV_RESPONSE_COMPLETE:
2800 scsi_status = error_info->status;
2802 case PQI_AIO_SERV_RESPONSE_FAILURE:
2803 switch (error_info->status) {
2804 case PQI_AIO_STATUS_IO_ABORTED:
2805 scsi_status = SAM_STAT_TASK_ABORTED;
2807 case PQI_AIO_STATUS_UNDERRUN:
2808 scsi_status = SAM_STAT_GOOD;
2809 residual_count = get_unaligned_le32(
2810 &error_info->residual_count);
2811 scsi_set_resid(scmd, residual_count);
2812 xfer_count = scsi_bufflen(scmd) - residual_count;
2813 if (xfer_count < scmd->underflow)
2814 host_byte = DID_SOFT_ERROR;
2816 case PQI_AIO_STATUS_OVERRUN:
2817 scsi_status = SAM_STAT_GOOD;
2819 case PQI_AIO_STATUS_AIO_PATH_DISABLED:
2820 pqi_aio_path_disabled(io_request);
2821 scsi_status = SAM_STAT_GOOD;
2822 io_request->status = -EAGAIN;
2824 case PQI_AIO_STATUS_NO_PATH_TO_DEVICE:
2825 case PQI_AIO_STATUS_INVALID_DEVICE:
2826 if (!io_request->raid_bypass) {
2827 device_offline = true;
2828 pqi_take_device_offline(scmd->device, "AIO");
2829 host_byte = DID_NO_CONNECT;
2831 scsi_status = SAM_STAT_CHECK_CONDITION;
2833 case PQI_AIO_STATUS_IO_ERROR:
2835 scsi_status = SAM_STAT_CHECK_CONDITION;
2839 case PQI_AIO_SERV_RESPONSE_TMF_COMPLETE:
2840 case PQI_AIO_SERV_RESPONSE_TMF_SUCCEEDED:
2841 scsi_status = SAM_STAT_GOOD;
2843 case PQI_AIO_SERV_RESPONSE_TMF_REJECTED:
2844 case PQI_AIO_SERV_RESPONSE_TMF_INCORRECT_LUN:
2846 scsi_status = SAM_STAT_CHECK_CONDITION;
2850 if (error_info->data_present) {
2852 get_unaligned_le16(&error_info->data_length);
2853 if (sense_data_length) {
2854 if (sense_data_length > sizeof(error_info->data))
2855 sense_data_length = sizeof(error_info->data);
2856 if (sense_data_length > SCSI_SENSE_BUFFERSIZE)
2857 sense_data_length = SCSI_SENSE_BUFFERSIZE;
2858 memcpy(scmd->sense_buffer, error_info->data,
2863 if (device_offline && sense_data_length == 0)
2864 scsi_build_sense_buffer(0, scmd->sense_buffer, HARDWARE_ERROR,
2867 scmd->result = scsi_status;
2868 set_host_byte(scmd, host_byte);
2871 static void pqi_process_io_error(unsigned int iu_type,
2872 struct pqi_io_request *io_request)
2875 case PQI_RESPONSE_IU_RAID_PATH_IO_ERROR:
2876 pqi_process_raid_io_error(io_request);
2878 case PQI_RESPONSE_IU_AIO_PATH_IO_ERROR:
2879 pqi_process_aio_io_error(io_request);
2884 static int pqi_interpret_task_management_response(
2885 struct pqi_task_management_response *response)
2889 switch (response->response_code) {
2890 case SOP_TMF_COMPLETE:
2891 case SOP_TMF_FUNCTION_SUCCEEDED:
2894 case SOP_TMF_REJECTED:
2905 static unsigned int pqi_process_io_intr(struct pqi_ctrl_info *ctrl_info,
2906 struct pqi_queue_group *queue_group)
2908 unsigned int num_responses;
2911 struct pqi_io_request *io_request;
2912 struct pqi_io_response *response;
2916 oq_ci = queue_group->oq_ci_copy;
2919 oq_pi = readl(queue_group->oq_pi);
2924 response = queue_group->oq_element_array +
2925 (oq_ci * PQI_OPERATIONAL_OQ_ELEMENT_LENGTH);
2927 request_id = get_unaligned_le16(&response->request_id);
2928 WARN_ON(request_id >= ctrl_info->max_io_slots);
2930 io_request = &ctrl_info->io_request_pool[request_id];
2931 WARN_ON(atomic_read(&io_request->refcount) == 0);
2933 switch (response->header.iu_type) {
2934 case PQI_RESPONSE_IU_RAID_PATH_IO_SUCCESS:
2935 case PQI_RESPONSE_IU_AIO_PATH_IO_SUCCESS:
2936 if (io_request->scmd)
2937 io_request->scmd->result = 0;
2939 case PQI_RESPONSE_IU_GENERAL_MANAGEMENT:
2941 case PQI_RESPONSE_IU_VENDOR_GENERAL:
2942 io_request->status =
2944 &((struct pqi_vendor_general_response *)
2947 case PQI_RESPONSE_IU_TASK_MANAGEMENT:
2948 io_request->status =
2949 pqi_interpret_task_management_response(
2952 case PQI_RESPONSE_IU_AIO_PATH_DISABLED:
2953 pqi_aio_path_disabled(io_request);
2954 io_request->status = -EAGAIN;
2956 case PQI_RESPONSE_IU_RAID_PATH_IO_ERROR:
2957 case PQI_RESPONSE_IU_AIO_PATH_IO_ERROR:
2958 io_request->error_info = ctrl_info->error_buffer +
2959 (get_unaligned_le16(&response->error_index) *
2960 PQI_ERROR_BUFFER_ELEMENT_LENGTH);
2961 pqi_process_io_error(response->header.iu_type,
2965 dev_err(&ctrl_info->pci_dev->dev,
2966 "unexpected IU type: 0x%x\n",
2967 response->header.iu_type);
2971 io_request->io_complete_callback(io_request,
2972 io_request->context);
2975 * Note that the I/O request structure CANNOT BE TOUCHED after
2976 * returning from the I/O completion callback!
2979 oq_ci = (oq_ci + 1) % ctrl_info->num_elements_per_oq;
2982 if (num_responses) {
2983 queue_group->oq_ci_copy = oq_ci;
2984 writel(oq_ci, queue_group->oq_ci);
2987 return num_responses;
2990 static inline unsigned int pqi_num_elements_free(unsigned int pi,
2991 unsigned int ci, unsigned int elements_in_queue)
2993 unsigned int num_elements_used;
2996 num_elements_used = pi - ci;
2998 num_elements_used = elements_in_queue - ci + pi;
3000 return elements_in_queue - num_elements_used - 1;
3003 static void pqi_send_event_ack(struct pqi_ctrl_info *ctrl_info,
3004 struct pqi_event_acknowledge_request *iu, size_t iu_length)
3008 unsigned long flags;
3010 struct pqi_queue_group *queue_group;
3012 queue_group = &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP];
3013 put_unaligned_le16(queue_group->oq_id, &iu->header.response_queue_id);
3016 spin_lock_irqsave(&queue_group->submit_lock[RAID_PATH], flags);
3018 iq_pi = queue_group->iq_pi_copy[RAID_PATH];
3019 iq_ci = readl(queue_group->iq_ci[RAID_PATH]);
3021 if (pqi_num_elements_free(iq_pi, iq_ci,
3022 ctrl_info->num_elements_per_iq))
3025 spin_unlock_irqrestore(
3026 &queue_group->submit_lock[RAID_PATH], flags);
3028 if (pqi_ctrl_offline(ctrl_info))
3032 next_element = queue_group->iq_element_array[RAID_PATH] +
3033 (iq_pi * PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
3035 memcpy(next_element, iu, iu_length);
3037 iq_pi = (iq_pi + 1) % ctrl_info->num_elements_per_iq;
3038 queue_group->iq_pi_copy[RAID_PATH] = iq_pi;
3041 * This write notifies the controller that an IU is available to be
3044 writel(iq_pi, queue_group->iq_pi[RAID_PATH]);
3046 spin_unlock_irqrestore(&queue_group->submit_lock[RAID_PATH], flags);
3049 static void pqi_acknowledge_event(struct pqi_ctrl_info *ctrl_info,
3050 struct pqi_event *event)
3052 struct pqi_event_acknowledge_request request;
3054 memset(&request, 0, sizeof(request));
3056 request.header.iu_type = PQI_REQUEST_IU_ACKNOWLEDGE_VENDOR_EVENT;
3057 put_unaligned_le16(sizeof(request) - PQI_REQUEST_HEADER_LENGTH,
3058 &request.header.iu_length);
3059 request.event_type = event->event_type;
3060 request.event_id = event->event_id;
3061 request.additional_event_id = event->additional_event_id;
3063 pqi_send_event_ack(ctrl_info, &request, sizeof(request));
3066 #define PQI_SOFT_RESET_STATUS_TIMEOUT_SECS 30
3067 #define PQI_SOFT_RESET_STATUS_POLL_INTERVAL_SECS 1
3069 static enum pqi_soft_reset_status pqi_poll_for_soft_reset_status(
3070 struct pqi_ctrl_info *ctrl_info)
3072 unsigned long timeout;
3075 timeout = (PQI_SOFT_RESET_STATUS_TIMEOUT_SECS * PQI_HZ) + jiffies;
3078 status = pqi_read_soft_reset_status(ctrl_info);
3079 if (status & PQI_SOFT_RESET_INITIATE)
3080 return RESET_INITIATE_DRIVER;
3082 if (status & PQI_SOFT_RESET_ABORT)
3085 if (time_after(jiffies, timeout)) {
3086 dev_err(&ctrl_info->pci_dev->dev,
3087 "timed out waiting for soft reset status\n");
3088 return RESET_TIMEDOUT;
3091 if (!sis_is_firmware_running(ctrl_info))
3092 return RESET_NORESPONSE;
3094 ssleep(PQI_SOFT_RESET_STATUS_POLL_INTERVAL_SECS);
3098 static void pqi_process_soft_reset(struct pqi_ctrl_info *ctrl_info,
3099 enum pqi_soft_reset_status reset_status)
3103 switch (reset_status) {
3104 case RESET_INITIATE_DRIVER:
3106 case RESET_TIMEDOUT:
3107 dev_info(&ctrl_info->pci_dev->dev,
3108 "resetting controller %u\n", ctrl_info->ctrl_id);
3109 sis_soft_reset(ctrl_info);
3111 case RESET_INITIATE_FIRMWARE:
3112 rc = pqi_ofa_ctrl_restart(ctrl_info);
3113 pqi_ofa_free_host_buffer(ctrl_info);
3114 dev_info(&ctrl_info->pci_dev->dev,
3115 "Online Firmware Activation for controller %u: %s\n",
3116 ctrl_info->ctrl_id, rc == 0 ? "SUCCESS" : "FAILED");
3119 pqi_ofa_ctrl_unquiesce(ctrl_info);
3120 dev_info(&ctrl_info->pci_dev->dev,
3121 "Online Firmware Activation for controller %u: %s\n",
3122 ctrl_info->ctrl_id, "ABORTED");
3124 case RESET_NORESPONSE:
3125 pqi_ofa_free_host_buffer(ctrl_info);
3126 pqi_take_ctrl_offline(ctrl_info);
3131 static void pqi_ofa_process_event(struct pqi_ctrl_info *ctrl_info,
3132 struct pqi_event *event)
3135 enum pqi_soft_reset_status status;
3137 event_id = get_unaligned_le16(&event->event_id);
3139 mutex_lock(&ctrl_info->ofa_mutex);
3141 if (event_id == PQI_EVENT_OFA_QUIESCE) {
3142 dev_info(&ctrl_info->pci_dev->dev,
3143 "Received Online Firmware Activation quiesce event for controller %u\n",
3144 ctrl_info->ctrl_id);
3145 pqi_ofa_ctrl_quiesce(ctrl_info);
3146 pqi_acknowledge_event(ctrl_info, event);
3147 if (ctrl_info->soft_reset_handshake_supported) {
3148 status = pqi_poll_for_soft_reset_status(ctrl_info);
3149 pqi_process_soft_reset(ctrl_info, status);
3151 pqi_process_soft_reset(ctrl_info,
3152 RESET_INITIATE_FIRMWARE);
3155 } else if (event_id == PQI_EVENT_OFA_MEMORY_ALLOCATION) {
3156 pqi_acknowledge_event(ctrl_info, event);
3157 pqi_ofa_setup_host_buffer(ctrl_info,
3158 le32_to_cpu(event->ofa_bytes_requested));
3159 pqi_ofa_host_memory_update(ctrl_info);
3160 } else if (event_id == PQI_EVENT_OFA_CANCELLED) {
3161 pqi_ofa_free_host_buffer(ctrl_info);
3162 pqi_acknowledge_event(ctrl_info, event);
3163 dev_info(&ctrl_info->pci_dev->dev,
3164 "Online Firmware Activation(%u) cancel reason : %u\n",
3165 ctrl_info->ctrl_id, event->ofa_cancel_reason);
3168 mutex_unlock(&ctrl_info->ofa_mutex);
3171 static void pqi_event_worker(struct work_struct *work)
3174 struct pqi_ctrl_info *ctrl_info;
3175 struct pqi_event *event;
3177 ctrl_info = container_of(work, struct pqi_ctrl_info, event_work);
3179 pqi_ctrl_busy(ctrl_info);
3180 pqi_wait_if_ctrl_blocked(ctrl_info, NO_TIMEOUT);
3181 if (pqi_ctrl_offline(ctrl_info))
3184 pqi_schedule_rescan_worker_delayed(ctrl_info);
3186 event = ctrl_info->events;
3187 for (i = 0; i < PQI_NUM_SUPPORTED_EVENTS; i++) {
3188 if (event->pending) {
3189 event->pending = false;
3190 if (event->event_type == PQI_EVENT_TYPE_OFA) {
3191 pqi_ctrl_unbusy(ctrl_info);
3192 pqi_ofa_process_event(ctrl_info, event);
3195 pqi_acknowledge_event(ctrl_info, event);
3201 pqi_ctrl_unbusy(ctrl_info);
3204 #define PQI_HEARTBEAT_TIMER_INTERVAL (10 * PQI_HZ)
3206 static void pqi_heartbeat_timer_handler(struct timer_list *t)
3209 u32 heartbeat_count;
3210 struct pqi_ctrl_info *ctrl_info = from_timer(ctrl_info, t,
3213 pqi_check_ctrl_health(ctrl_info);
3214 if (pqi_ctrl_offline(ctrl_info))
3217 num_interrupts = atomic_read(&ctrl_info->num_interrupts);
3218 heartbeat_count = pqi_read_heartbeat_counter(ctrl_info);
3220 if (num_interrupts == ctrl_info->previous_num_interrupts) {
3221 if (heartbeat_count == ctrl_info->previous_heartbeat_count) {
3222 dev_err(&ctrl_info->pci_dev->dev,
3223 "no heartbeat detected - last heartbeat count: %u\n",
3225 pqi_take_ctrl_offline(ctrl_info);
3229 ctrl_info->previous_num_interrupts = num_interrupts;
3232 ctrl_info->previous_heartbeat_count = heartbeat_count;
3233 mod_timer(&ctrl_info->heartbeat_timer,
3234 jiffies + PQI_HEARTBEAT_TIMER_INTERVAL);
3237 static void pqi_start_heartbeat_timer(struct pqi_ctrl_info *ctrl_info)
3239 if (!ctrl_info->heartbeat_counter)
3242 ctrl_info->previous_num_interrupts =
3243 atomic_read(&ctrl_info->num_interrupts);
3244 ctrl_info->previous_heartbeat_count =
3245 pqi_read_heartbeat_counter(ctrl_info);
3247 ctrl_info->heartbeat_timer.expires =
3248 jiffies + PQI_HEARTBEAT_TIMER_INTERVAL;
3249 add_timer(&ctrl_info->heartbeat_timer);
3252 static inline void pqi_stop_heartbeat_timer(struct pqi_ctrl_info *ctrl_info)
3254 del_timer_sync(&ctrl_info->heartbeat_timer);
3257 static inline int pqi_event_type_to_event_index(unsigned int event_type)
3261 for (index = 0; index < ARRAY_SIZE(pqi_supported_event_types); index++)
3262 if (event_type == pqi_supported_event_types[index])
3268 static inline bool pqi_is_supported_event(unsigned int event_type)
3270 return pqi_event_type_to_event_index(event_type) != -1;
3273 static void pqi_ofa_capture_event_payload(struct pqi_event *event,
3274 struct pqi_event_response *response)
3278 event_id = get_unaligned_le16(&event->event_id);
3280 if (event->event_type == PQI_EVENT_TYPE_OFA) {
3281 if (event_id == PQI_EVENT_OFA_MEMORY_ALLOCATION) {
3282 event->ofa_bytes_requested =
3283 response->data.ofa_memory_allocation.bytes_requested;
3284 } else if (event_id == PQI_EVENT_OFA_CANCELLED) {
3285 event->ofa_cancel_reason =
3286 response->data.ofa_cancelled.reason;
3291 static unsigned int pqi_process_event_intr(struct pqi_ctrl_info *ctrl_info)
3293 unsigned int num_events;
3296 struct pqi_event_queue *event_queue;
3297 struct pqi_event_response *response;
3298 struct pqi_event *event;
3301 event_queue = &ctrl_info->event_queue;
3303 oq_ci = event_queue->oq_ci_copy;
3306 oq_pi = readl(event_queue->oq_pi);
3311 response = event_queue->oq_element_array +
3312 (oq_ci * PQI_EVENT_OQ_ELEMENT_LENGTH);
3315 pqi_event_type_to_event_index(response->event_type);
3317 if (event_index >= 0) {
3318 if (response->request_acknowlege) {
3319 event = &ctrl_info->events[event_index];
3320 event->pending = true;
3321 event->event_type = response->event_type;
3322 event->event_id = response->event_id;
3323 event->additional_event_id =
3324 response->additional_event_id;
3325 pqi_ofa_capture_event_payload(event, response);
3329 oq_ci = (oq_ci + 1) % PQI_NUM_EVENT_QUEUE_ELEMENTS;
3333 event_queue->oq_ci_copy = oq_ci;
3334 writel(oq_ci, event_queue->oq_ci);
3335 schedule_work(&ctrl_info->event_work);
3341 #define PQI_LEGACY_INTX_MASK 0x1
3343 static inline void pqi_configure_legacy_intx(struct pqi_ctrl_info *ctrl_info,
3347 struct pqi_device_registers __iomem *pqi_registers;
3348 volatile void __iomem *register_addr;
3350 pqi_registers = ctrl_info->pqi_registers;
3353 register_addr = &pqi_registers->legacy_intx_mask_clear;
3355 register_addr = &pqi_registers->legacy_intx_mask_set;
3357 intx_mask = readl(register_addr);
3358 intx_mask |= PQI_LEGACY_INTX_MASK;
3359 writel(intx_mask, register_addr);
3362 static void pqi_change_irq_mode(struct pqi_ctrl_info *ctrl_info,
3363 enum pqi_irq_mode new_mode)
3365 switch (ctrl_info->irq_mode) {
3371 pqi_configure_legacy_intx(ctrl_info, true);
3372 sis_enable_intx(ctrl_info);
3381 pqi_configure_legacy_intx(ctrl_info, false);
3382 sis_enable_msix(ctrl_info);
3387 pqi_configure_legacy_intx(ctrl_info, false);
3394 sis_enable_msix(ctrl_info);
3397 pqi_configure_legacy_intx(ctrl_info, true);
3398 sis_enable_intx(ctrl_info);
3406 ctrl_info->irq_mode = new_mode;
3409 #define PQI_LEGACY_INTX_PENDING 0x1
3411 static inline bool pqi_is_valid_irq(struct pqi_ctrl_info *ctrl_info)
3416 switch (ctrl_info->irq_mode) {
3422 readl(&ctrl_info->pqi_registers->legacy_intx_status);
3423 if (intx_status & PQI_LEGACY_INTX_PENDING)
3437 static irqreturn_t pqi_irq_handler(int irq, void *data)
3439 struct pqi_ctrl_info *ctrl_info;
3440 struct pqi_queue_group *queue_group;
3441 unsigned int num_responses_handled;
3444 ctrl_info = queue_group->ctrl_info;
3446 if (!pqi_is_valid_irq(ctrl_info))
3449 num_responses_handled = pqi_process_io_intr(ctrl_info, queue_group);
3451 if (irq == ctrl_info->event_irq)
3452 num_responses_handled += pqi_process_event_intr(ctrl_info);
3454 if (num_responses_handled)
3455 atomic_inc(&ctrl_info->num_interrupts);
3457 pqi_start_io(ctrl_info, queue_group, RAID_PATH, NULL);
3458 pqi_start_io(ctrl_info, queue_group, AIO_PATH, NULL);
3463 static int pqi_request_irqs(struct pqi_ctrl_info *ctrl_info)
3465 struct pci_dev *pci_dev = ctrl_info->pci_dev;
3469 ctrl_info->event_irq = pci_irq_vector(pci_dev, 0);
3471 for (i = 0; i < ctrl_info->num_msix_vectors_enabled; i++) {
3472 rc = request_irq(pci_irq_vector(pci_dev, i), pqi_irq_handler, 0,
3473 DRIVER_NAME_SHORT, &ctrl_info->queue_groups[i]);
3475 dev_err(&pci_dev->dev,
3476 "irq %u init failed with error %d\n",
3477 pci_irq_vector(pci_dev, i), rc);
3480 ctrl_info->num_msix_vectors_initialized++;
3486 static void pqi_free_irqs(struct pqi_ctrl_info *ctrl_info)
3490 for (i = 0; i < ctrl_info->num_msix_vectors_initialized; i++)
3491 free_irq(pci_irq_vector(ctrl_info->pci_dev, i),
3492 &ctrl_info->queue_groups[i]);
3494 ctrl_info->num_msix_vectors_initialized = 0;
3497 static int pqi_enable_msix_interrupts(struct pqi_ctrl_info *ctrl_info)
3499 int num_vectors_enabled;
3501 num_vectors_enabled = pci_alloc_irq_vectors(ctrl_info->pci_dev,
3502 PQI_MIN_MSIX_VECTORS, ctrl_info->num_queue_groups,
3503 PCI_IRQ_MSIX | PCI_IRQ_AFFINITY);
3504 if (num_vectors_enabled < 0) {
3505 dev_err(&ctrl_info->pci_dev->dev,
3506 "MSI-X init failed with error %d\n",
3507 num_vectors_enabled);
3508 return num_vectors_enabled;
3511 ctrl_info->num_msix_vectors_enabled = num_vectors_enabled;
3512 ctrl_info->irq_mode = IRQ_MODE_MSIX;
3516 static void pqi_disable_msix_interrupts(struct pqi_ctrl_info *ctrl_info)
3518 if (ctrl_info->num_msix_vectors_enabled) {
3519 pci_free_irq_vectors(ctrl_info->pci_dev);
3520 ctrl_info->num_msix_vectors_enabled = 0;
3524 static int pqi_alloc_operational_queues(struct pqi_ctrl_info *ctrl_info)
3527 size_t alloc_length;
3528 size_t element_array_length_per_iq;
3529 size_t element_array_length_per_oq;
3530 void *element_array;
3531 void __iomem *next_queue_index;
3532 void *aligned_pointer;
3533 unsigned int num_inbound_queues;
3534 unsigned int num_outbound_queues;
3535 unsigned int num_queue_indexes;
3536 struct pqi_queue_group *queue_group;
3538 element_array_length_per_iq =
3539 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH *
3540 ctrl_info->num_elements_per_iq;
3541 element_array_length_per_oq =
3542 PQI_OPERATIONAL_OQ_ELEMENT_LENGTH *
3543 ctrl_info->num_elements_per_oq;
3544 num_inbound_queues = ctrl_info->num_queue_groups * 2;
3545 num_outbound_queues = ctrl_info->num_queue_groups;
3546 num_queue_indexes = (ctrl_info->num_queue_groups * 3) + 1;
3548 aligned_pointer = NULL;
3550 for (i = 0; i < num_inbound_queues; i++) {
3551 aligned_pointer = PTR_ALIGN(aligned_pointer,
3552 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3553 aligned_pointer += element_array_length_per_iq;
3556 for (i = 0; i < num_outbound_queues; i++) {
3557 aligned_pointer = PTR_ALIGN(aligned_pointer,
3558 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3559 aligned_pointer += element_array_length_per_oq;
3562 aligned_pointer = PTR_ALIGN(aligned_pointer,
3563 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3564 aligned_pointer += PQI_NUM_EVENT_QUEUE_ELEMENTS *
3565 PQI_EVENT_OQ_ELEMENT_LENGTH;
3567 for (i = 0; i < num_queue_indexes; i++) {
3568 aligned_pointer = PTR_ALIGN(aligned_pointer,
3569 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3570 aligned_pointer += sizeof(pqi_index_t);
3573 alloc_length = (size_t)aligned_pointer +
3574 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT;
3576 alloc_length += PQI_EXTRA_SGL_MEMORY;
3578 ctrl_info->queue_memory_base =
3579 dma_zalloc_coherent(&ctrl_info->pci_dev->dev,
3581 &ctrl_info->queue_memory_base_dma_handle, GFP_KERNEL);
3583 if (!ctrl_info->queue_memory_base)
3586 ctrl_info->queue_memory_length = alloc_length;
3588 element_array = PTR_ALIGN(ctrl_info->queue_memory_base,
3589 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3591 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3592 queue_group = &ctrl_info->queue_groups[i];
3593 queue_group->iq_element_array[RAID_PATH] = element_array;
3594 queue_group->iq_element_array_bus_addr[RAID_PATH] =
3595 ctrl_info->queue_memory_base_dma_handle +
3596 (element_array - ctrl_info->queue_memory_base);
3597 element_array += element_array_length_per_iq;
3598 element_array = PTR_ALIGN(element_array,
3599 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3600 queue_group->iq_element_array[AIO_PATH] = element_array;
3601 queue_group->iq_element_array_bus_addr[AIO_PATH] =
3602 ctrl_info->queue_memory_base_dma_handle +
3603 (element_array - ctrl_info->queue_memory_base);
3604 element_array += element_array_length_per_iq;
3605 element_array = PTR_ALIGN(element_array,
3606 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3609 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3610 queue_group = &ctrl_info->queue_groups[i];
3611 queue_group->oq_element_array = element_array;
3612 queue_group->oq_element_array_bus_addr =
3613 ctrl_info->queue_memory_base_dma_handle +
3614 (element_array - ctrl_info->queue_memory_base);
3615 element_array += element_array_length_per_oq;
3616 element_array = PTR_ALIGN(element_array,
3617 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3620 ctrl_info->event_queue.oq_element_array = element_array;
3621 ctrl_info->event_queue.oq_element_array_bus_addr =
3622 ctrl_info->queue_memory_base_dma_handle +
3623 (element_array - ctrl_info->queue_memory_base);
3624 element_array += PQI_NUM_EVENT_QUEUE_ELEMENTS *
3625 PQI_EVENT_OQ_ELEMENT_LENGTH;
3627 next_queue_index = (void __iomem *)PTR_ALIGN(element_array,
3628 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3630 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3631 queue_group = &ctrl_info->queue_groups[i];
3632 queue_group->iq_ci[RAID_PATH] = next_queue_index;
3633 queue_group->iq_ci_bus_addr[RAID_PATH] =
3634 ctrl_info->queue_memory_base_dma_handle +
3636 (void __iomem *)ctrl_info->queue_memory_base);
3637 next_queue_index += sizeof(pqi_index_t);
3638 next_queue_index = PTR_ALIGN(next_queue_index,
3639 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3640 queue_group->iq_ci[AIO_PATH] = next_queue_index;
3641 queue_group->iq_ci_bus_addr[AIO_PATH] =
3642 ctrl_info->queue_memory_base_dma_handle +
3644 (void __iomem *)ctrl_info->queue_memory_base);
3645 next_queue_index += sizeof(pqi_index_t);
3646 next_queue_index = PTR_ALIGN(next_queue_index,
3647 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3648 queue_group->oq_pi = next_queue_index;
3649 queue_group->oq_pi_bus_addr =
3650 ctrl_info->queue_memory_base_dma_handle +
3652 (void __iomem *)ctrl_info->queue_memory_base);
3653 next_queue_index += sizeof(pqi_index_t);
3654 next_queue_index = PTR_ALIGN(next_queue_index,
3655 PQI_OPERATIONAL_INDEX_ALIGNMENT);
3658 ctrl_info->event_queue.oq_pi = next_queue_index;
3659 ctrl_info->event_queue.oq_pi_bus_addr =
3660 ctrl_info->queue_memory_base_dma_handle +
3662 (void __iomem *)ctrl_info->queue_memory_base);
3667 static void pqi_init_operational_queues(struct pqi_ctrl_info *ctrl_info)
3670 u16 next_iq_id = PQI_MIN_OPERATIONAL_QUEUE_ID;
3671 u16 next_oq_id = PQI_MIN_OPERATIONAL_QUEUE_ID;
3674 * Initialize the backpointers to the controller structure in
3675 * each operational queue group structure.
3677 for (i = 0; i < ctrl_info->num_queue_groups; i++)
3678 ctrl_info->queue_groups[i].ctrl_info = ctrl_info;
3681 * Assign IDs to all operational queues. Note that the IDs
3682 * assigned to operational IQs are independent of the IDs
3683 * assigned to operational OQs.
3685 ctrl_info->event_queue.oq_id = next_oq_id++;
3686 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3687 ctrl_info->queue_groups[i].iq_id[RAID_PATH] = next_iq_id++;
3688 ctrl_info->queue_groups[i].iq_id[AIO_PATH] = next_iq_id++;
3689 ctrl_info->queue_groups[i].oq_id = next_oq_id++;
3693 * Assign MSI-X table entry indexes to all queues. Note that the
3694 * interrupt for the event queue is shared with the first queue group.
3696 ctrl_info->event_queue.int_msg_num = 0;
3697 for (i = 0; i < ctrl_info->num_queue_groups; i++)
3698 ctrl_info->queue_groups[i].int_msg_num = i;
3700 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
3701 spin_lock_init(&ctrl_info->queue_groups[i].submit_lock[0]);
3702 spin_lock_init(&ctrl_info->queue_groups[i].submit_lock[1]);
3703 INIT_LIST_HEAD(&ctrl_info->queue_groups[i].request_list[0]);
3704 INIT_LIST_HEAD(&ctrl_info->queue_groups[i].request_list[1]);
3708 static int pqi_alloc_admin_queues(struct pqi_ctrl_info *ctrl_info)
3710 size_t alloc_length;
3711 struct pqi_admin_queues_aligned *admin_queues_aligned;
3712 struct pqi_admin_queues *admin_queues;
3714 alloc_length = sizeof(struct pqi_admin_queues_aligned) +
3715 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT;
3717 ctrl_info->admin_queue_memory_base =
3718 dma_zalloc_coherent(&ctrl_info->pci_dev->dev,
3720 &ctrl_info->admin_queue_memory_base_dma_handle,
3723 if (!ctrl_info->admin_queue_memory_base)
3726 ctrl_info->admin_queue_memory_length = alloc_length;
3728 admin_queues = &ctrl_info->admin_queues;
3729 admin_queues_aligned = PTR_ALIGN(ctrl_info->admin_queue_memory_base,
3730 PQI_QUEUE_ELEMENT_ARRAY_ALIGNMENT);
3731 admin_queues->iq_element_array =
3732 &admin_queues_aligned->iq_element_array;
3733 admin_queues->oq_element_array =
3734 &admin_queues_aligned->oq_element_array;
3735 admin_queues->iq_ci = &admin_queues_aligned->iq_ci;
3736 admin_queues->oq_pi =
3737 (pqi_index_t __iomem *)&admin_queues_aligned->oq_pi;
3739 admin_queues->iq_element_array_bus_addr =
3740 ctrl_info->admin_queue_memory_base_dma_handle +
3741 (admin_queues->iq_element_array -
3742 ctrl_info->admin_queue_memory_base);
3743 admin_queues->oq_element_array_bus_addr =
3744 ctrl_info->admin_queue_memory_base_dma_handle +
3745 (admin_queues->oq_element_array -
3746 ctrl_info->admin_queue_memory_base);
3747 admin_queues->iq_ci_bus_addr =
3748 ctrl_info->admin_queue_memory_base_dma_handle +
3749 ((void *)admin_queues->iq_ci -
3750 ctrl_info->admin_queue_memory_base);
3751 admin_queues->oq_pi_bus_addr =
3752 ctrl_info->admin_queue_memory_base_dma_handle +
3753 ((void __iomem *)admin_queues->oq_pi -
3754 (void __iomem *)ctrl_info->admin_queue_memory_base);
3759 #define PQI_ADMIN_QUEUE_CREATE_TIMEOUT_JIFFIES PQI_HZ
3760 #define PQI_ADMIN_QUEUE_CREATE_POLL_INTERVAL_MSECS 1
3762 static int pqi_create_admin_queues(struct pqi_ctrl_info *ctrl_info)
3764 struct pqi_device_registers __iomem *pqi_registers;
3765 struct pqi_admin_queues *admin_queues;
3766 unsigned long timeout;
3770 pqi_registers = ctrl_info->pqi_registers;
3771 admin_queues = &ctrl_info->admin_queues;
3773 writeq((u64)admin_queues->iq_element_array_bus_addr,
3774 &pqi_registers->admin_iq_element_array_addr);
3775 writeq((u64)admin_queues->oq_element_array_bus_addr,
3776 &pqi_registers->admin_oq_element_array_addr);
3777 writeq((u64)admin_queues->iq_ci_bus_addr,
3778 &pqi_registers->admin_iq_ci_addr);
3779 writeq((u64)admin_queues->oq_pi_bus_addr,
3780 &pqi_registers->admin_oq_pi_addr);
3782 reg = PQI_ADMIN_IQ_NUM_ELEMENTS |
3783 (PQI_ADMIN_OQ_NUM_ELEMENTS) << 8 |
3784 (admin_queues->int_msg_num << 16);
3785 writel(reg, &pqi_registers->admin_iq_num_elements);
3786 writel(PQI_CREATE_ADMIN_QUEUE_PAIR,
3787 &pqi_registers->function_and_status_code);
3789 timeout = PQI_ADMIN_QUEUE_CREATE_TIMEOUT_JIFFIES + jiffies;
3791 status = readb(&pqi_registers->function_and_status_code);
3792 if (status == PQI_STATUS_IDLE)
3794 if (time_after(jiffies, timeout))
3796 msleep(PQI_ADMIN_QUEUE_CREATE_POLL_INTERVAL_MSECS);
3800 * The offset registers are not initialized to the correct
3801 * offsets until *after* the create admin queue pair command
3802 * completes successfully.
3804 admin_queues->iq_pi = ctrl_info->iomem_base +
3805 PQI_DEVICE_REGISTERS_OFFSET +
3806 readq(&pqi_registers->admin_iq_pi_offset);
3807 admin_queues->oq_ci = ctrl_info->iomem_base +
3808 PQI_DEVICE_REGISTERS_OFFSET +
3809 readq(&pqi_registers->admin_oq_ci_offset);
3814 static void pqi_submit_admin_request(struct pqi_ctrl_info *ctrl_info,
3815 struct pqi_general_admin_request *request)
3817 struct pqi_admin_queues *admin_queues;
3821 admin_queues = &ctrl_info->admin_queues;
3822 iq_pi = admin_queues->iq_pi_copy;
3824 next_element = admin_queues->iq_element_array +
3825 (iq_pi * PQI_ADMIN_IQ_ELEMENT_LENGTH);
3827 memcpy(next_element, request, sizeof(*request));
3829 iq_pi = (iq_pi + 1) % PQI_ADMIN_IQ_NUM_ELEMENTS;
3830 admin_queues->iq_pi_copy = iq_pi;
3833 * This write notifies the controller that an IU is available to be
3836 writel(iq_pi, admin_queues->iq_pi);
3839 #define PQI_ADMIN_REQUEST_TIMEOUT_SECS 60
3841 static int pqi_poll_for_admin_response(struct pqi_ctrl_info *ctrl_info,
3842 struct pqi_general_admin_response *response)
3844 struct pqi_admin_queues *admin_queues;
3847 unsigned long timeout;
3849 admin_queues = &ctrl_info->admin_queues;
3850 oq_ci = admin_queues->oq_ci_copy;
3852 timeout = (PQI_ADMIN_REQUEST_TIMEOUT_SECS * PQI_HZ) + jiffies;
3855 oq_pi = readl(admin_queues->oq_pi);
3858 if (time_after(jiffies, timeout)) {
3859 dev_err(&ctrl_info->pci_dev->dev,
3860 "timed out waiting for admin response\n");
3863 if (!sis_is_firmware_running(ctrl_info))
3865 usleep_range(1000, 2000);
3868 memcpy(response, admin_queues->oq_element_array +
3869 (oq_ci * PQI_ADMIN_OQ_ELEMENT_LENGTH), sizeof(*response));
3871 oq_ci = (oq_ci + 1) % PQI_ADMIN_OQ_NUM_ELEMENTS;
3872 admin_queues->oq_ci_copy = oq_ci;
3873 writel(oq_ci, admin_queues->oq_ci);
3878 static void pqi_start_io(struct pqi_ctrl_info *ctrl_info,
3879 struct pqi_queue_group *queue_group, enum pqi_io_path path,
3880 struct pqi_io_request *io_request)
3882 struct pqi_io_request *next;
3887 unsigned long flags;
3888 unsigned int num_elements_needed;
3889 unsigned int num_elements_to_end_of_queue;
3891 struct pqi_iu_header *request;
3893 spin_lock_irqsave(&queue_group->submit_lock[path], flags);
3896 io_request->queue_group = queue_group;
3897 list_add_tail(&io_request->request_list_entry,
3898 &queue_group->request_list[path]);
3901 iq_pi = queue_group->iq_pi_copy[path];
3903 list_for_each_entry_safe(io_request, next,
3904 &queue_group->request_list[path], request_list_entry) {
3906 request = io_request->iu;
3908 iu_length = get_unaligned_le16(&request->iu_length) +
3909 PQI_REQUEST_HEADER_LENGTH;
3910 num_elements_needed =
3911 DIV_ROUND_UP(iu_length,
3912 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
3914 iq_ci = readl(queue_group->iq_ci[path]);
3916 if (num_elements_needed > pqi_num_elements_free(iq_pi, iq_ci,
3917 ctrl_info->num_elements_per_iq))
3920 put_unaligned_le16(queue_group->oq_id,
3921 &request->response_queue_id);
3923 next_element = queue_group->iq_element_array[path] +
3924 (iq_pi * PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
3926 num_elements_to_end_of_queue =
3927 ctrl_info->num_elements_per_iq - iq_pi;
3929 if (num_elements_needed <= num_elements_to_end_of_queue) {
3930 memcpy(next_element, request, iu_length);
3932 copy_count = num_elements_to_end_of_queue *
3933 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH;
3934 memcpy(next_element, request, copy_count);
3935 memcpy(queue_group->iq_element_array[path],
3936 (u8 *)request + copy_count,
3937 iu_length - copy_count);
3940 iq_pi = (iq_pi + num_elements_needed) %
3941 ctrl_info->num_elements_per_iq;
3943 list_del(&io_request->request_list_entry);
3946 if (iq_pi != queue_group->iq_pi_copy[path]) {
3947 queue_group->iq_pi_copy[path] = iq_pi;
3949 * This write notifies the controller that one or more IUs are
3950 * available to be processed.
3952 writel(iq_pi, queue_group->iq_pi[path]);
3955 spin_unlock_irqrestore(&queue_group->submit_lock[path], flags);
3958 #define PQI_WAIT_FOR_COMPLETION_IO_TIMEOUT_SECS 10
3960 static int pqi_wait_for_completion_io(struct pqi_ctrl_info *ctrl_info,
3961 struct completion *wait)
3966 if (wait_for_completion_io_timeout(wait,
3967 PQI_WAIT_FOR_COMPLETION_IO_TIMEOUT_SECS * PQI_HZ)) {
3972 pqi_check_ctrl_health(ctrl_info);
3973 if (pqi_ctrl_offline(ctrl_info)) {
3982 static void pqi_raid_synchronous_complete(struct pqi_io_request *io_request,
3985 struct completion *waiting = context;
3990 static int pqi_process_raid_io_error_synchronous(struct pqi_raid_error_info
3995 switch (error_info->data_out_result) {
3996 case PQI_DATA_IN_OUT_GOOD:
3997 if (error_info->status == SAM_STAT_GOOD)
4000 case PQI_DATA_IN_OUT_UNDERFLOW:
4001 if (error_info->status == SAM_STAT_GOOD ||
4002 error_info->status == SAM_STAT_CHECK_CONDITION)
4005 case PQI_DATA_IN_OUT_ABORTED:
4006 rc = PQI_CMD_STATUS_ABORTED;
4013 static int pqi_submit_raid_request_synchronous(struct pqi_ctrl_info *ctrl_info,
4014 struct pqi_iu_header *request, unsigned int flags,
4015 struct pqi_raid_error_info *error_info, unsigned long timeout_msecs)
4018 struct pqi_io_request *io_request;
4019 unsigned long start_jiffies;
4020 unsigned long msecs_blocked;
4022 DECLARE_COMPLETION_ONSTACK(wait);
4025 * Note that specifying PQI_SYNC_FLAGS_INTERRUPTABLE and a timeout value
4026 * are mutually exclusive.
4029 if (flags & PQI_SYNC_FLAGS_INTERRUPTABLE) {
4030 if (down_interruptible(&ctrl_info->sync_request_sem))
4031 return -ERESTARTSYS;
4033 if (timeout_msecs == NO_TIMEOUT) {
4034 down(&ctrl_info->sync_request_sem);
4036 start_jiffies = jiffies;
4037 if (down_timeout(&ctrl_info->sync_request_sem,
4038 msecs_to_jiffies(timeout_msecs)))
4041 jiffies_to_msecs(jiffies - start_jiffies);
4042 if (msecs_blocked >= timeout_msecs)
4044 timeout_msecs -= msecs_blocked;
4048 pqi_ctrl_busy(ctrl_info);
4049 timeout_msecs = pqi_wait_if_ctrl_blocked(ctrl_info, timeout_msecs);
4050 if (timeout_msecs == 0) {
4051 pqi_ctrl_unbusy(ctrl_info);
4056 if (pqi_ctrl_offline(ctrl_info)) {
4057 pqi_ctrl_unbusy(ctrl_info);
4062 io_request = pqi_alloc_io_request(ctrl_info);
4064 put_unaligned_le16(io_request->index,
4065 &(((struct pqi_raid_path_request *)request)->request_id));
4067 if (request->iu_type == PQI_REQUEST_IU_RAID_PATH_IO)
4068 ((struct pqi_raid_path_request *)request)->error_index =
4069 ((struct pqi_raid_path_request *)request)->request_id;
4071 iu_length = get_unaligned_le16(&request->iu_length) +
4072 PQI_REQUEST_HEADER_LENGTH;
4073 memcpy(io_request->iu, request, iu_length);
4075 io_request->io_complete_callback = pqi_raid_synchronous_complete;
4076 io_request->context = &wait;
4078 pqi_start_io(ctrl_info,
4079 &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP], RAID_PATH,
4082 pqi_ctrl_unbusy(ctrl_info);
4084 if (timeout_msecs == NO_TIMEOUT) {
4085 pqi_wait_for_completion_io(ctrl_info, &wait);
4087 if (!wait_for_completion_io_timeout(&wait,
4088 msecs_to_jiffies(timeout_msecs))) {
4089 dev_warn(&ctrl_info->pci_dev->dev,
4090 "command timed out\n");
4096 if (io_request->error_info)
4097 memcpy(error_info, io_request->error_info,
4098 sizeof(*error_info));
4100 memset(error_info, 0, sizeof(*error_info));
4101 } else if (rc == 0 && io_request->error_info) {
4102 rc = pqi_process_raid_io_error_synchronous(
4103 io_request->error_info);
4106 pqi_free_io_request(io_request);
4109 up(&ctrl_info->sync_request_sem);
4114 static int pqi_validate_admin_response(
4115 struct pqi_general_admin_response *response, u8 expected_function_code)
4117 if (response->header.iu_type != PQI_RESPONSE_IU_GENERAL_ADMIN)
4120 if (get_unaligned_le16(&response->header.iu_length) !=
4121 PQI_GENERAL_ADMIN_IU_LENGTH)
4124 if (response->function_code != expected_function_code)
4127 if (response->status != PQI_GENERAL_ADMIN_STATUS_SUCCESS)
4133 static int pqi_submit_admin_request_synchronous(
4134 struct pqi_ctrl_info *ctrl_info,
4135 struct pqi_general_admin_request *request,
4136 struct pqi_general_admin_response *response)
4140 pqi_submit_admin_request(ctrl_info, request);
4142 rc = pqi_poll_for_admin_response(ctrl_info, response);
4145 rc = pqi_validate_admin_response(response,
4146 request->function_code);
4151 static int pqi_report_device_capability(struct pqi_ctrl_info *ctrl_info)
4154 struct pqi_general_admin_request request;
4155 struct pqi_general_admin_response response;
4156 struct pqi_device_capability *capability;
4157 struct pqi_iu_layer_descriptor *sop_iu_layer_descriptor;
4159 capability = kmalloc(sizeof(*capability), GFP_KERNEL);
4163 memset(&request, 0, sizeof(request));
4165 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4166 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4167 &request.header.iu_length);
4168 request.function_code =
4169 PQI_GENERAL_ADMIN_FUNCTION_REPORT_DEVICE_CAPABILITY;
4170 put_unaligned_le32(sizeof(*capability),
4171 &request.data.report_device_capability.buffer_length);
4173 rc = pqi_map_single(ctrl_info->pci_dev,
4174 &request.data.report_device_capability.sg_descriptor,
4175 capability, sizeof(*capability),
4180 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4183 pqi_pci_unmap(ctrl_info->pci_dev,
4184 &request.data.report_device_capability.sg_descriptor, 1,
4190 if (response.status != PQI_GENERAL_ADMIN_STATUS_SUCCESS) {
4195 ctrl_info->max_inbound_queues =
4196 get_unaligned_le16(&capability->max_inbound_queues);
4197 ctrl_info->max_elements_per_iq =
4198 get_unaligned_le16(&capability->max_elements_per_iq);
4199 ctrl_info->max_iq_element_length =
4200 get_unaligned_le16(&capability->max_iq_element_length)
4202 ctrl_info->max_outbound_queues =
4203 get_unaligned_le16(&capability->max_outbound_queues);
4204 ctrl_info->max_elements_per_oq =
4205 get_unaligned_le16(&capability->max_elements_per_oq);
4206 ctrl_info->max_oq_element_length =
4207 get_unaligned_le16(&capability->max_oq_element_length)
4210 sop_iu_layer_descriptor =
4211 &capability->iu_layer_descriptors[PQI_PROTOCOL_SOP];
4213 ctrl_info->max_inbound_iu_length_per_firmware =
4215 &sop_iu_layer_descriptor->max_inbound_iu_length);
4216 ctrl_info->inbound_spanning_supported =
4217 sop_iu_layer_descriptor->inbound_spanning_supported;
4218 ctrl_info->outbound_spanning_supported =
4219 sop_iu_layer_descriptor->outbound_spanning_supported;
4227 static int pqi_validate_device_capability(struct pqi_ctrl_info *ctrl_info)
4229 if (ctrl_info->max_iq_element_length <
4230 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) {
4231 dev_err(&ctrl_info->pci_dev->dev,
4232 "max. inbound queue element length of %d is less than the required length of %d\n",
4233 ctrl_info->max_iq_element_length,
4234 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
4238 if (ctrl_info->max_oq_element_length <
4239 PQI_OPERATIONAL_OQ_ELEMENT_LENGTH) {
4240 dev_err(&ctrl_info->pci_dev->dev,
4241 "max. outbound queue element length of %d is less than the required length of %d\n",
4242 ctrl_info->max_oq_element_length,
4243 PQI_OPERATIONAL_OQ_ELEMENT_LENGTH);
4247 if (ctrl_info->max_inbound_iu_length_per_firmware <
4248 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) {
4249 dev_err(&ctrl_info->pci_dev->dev,
4250 "max. inbound IU length of %u is less than the min. required length of %d\n",
4251 ctrl_info->max_inbound_iu_length_per_firmware,
4252 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
4256 if (!ctrl_info->inbound_spanning_supported) {
4257 dev_err(&ctrl_info->pci_dev->dev,
4258 "the controller does not support inbound spanning\n");
4262 if (ctrl_info->outbound_spanning_supported) {
4263 dev_err(&ctrl_info->pci_dev->dev,
4264 "the controller supports outbound spanning but this driver does not\n");
4271 static int pqi_create_event_queue(struct pqi_ctrl_info *ctrl_info)
4274 struct pqi_event_queue *event_queue;
4275 struct pqi_general_admin_request request;
4276 struct pqi_general_admin_response response;
4278 event_queue = &ctrl_info->event_queue;
4281 * Create OQ (Outbound Queue - device to host queue) to dedicate
4284 memset(&request, 0, sizeof(request));
4285 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4286 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4287 &request.header.iu_length);
4288 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_OQ;
4289 put_unaligned_le16(event_queue->oq_id,
4290 &request.data.create_operational_oq.queue_id);
4291 put_unaligned_le64((u64)event_queue->oq_element_array_bus_addr,
4292 &request.data.create_operational_oq.element_array_addr);
4293 put_unaligned_le64((u64)event_queue->oq_pi_bus_addr,
4294 &request.data.create_operational_oq.pi_addr);
4295 put_unaligned_le16(PQI_NUM_EVENT_QUEUE_ELEMENTS,
4296 &request.data.create_operational_oq.num_elements);
4297 put_unaligned_le16(PQI_EVENT_OQ_ELEMENT_LENGTH / 16,
4298 &request.data.create_operational_oq.element_length);
4299 request.data.create_operational_oq.queue_protocol = PQI_PROTOCOL_SOP;
4300 put_unaligned_le16(event_queue->int_msg_num,
4301 &request.data.create_operational_oq.int_msg_num);
4303 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4308 event_queue->oq_ci = ctrl_info->iomem_base +
4309 PQI_DEVICE_REGISTERS_OFFSET +
4311 &response.data.create_operational_oq.oq_ci_offset);
4316 static int pqi_create_queue_group(struct pqi_ctrl_info *ctrl_info,
4317 unsigned int group_number)
4320 struct pqi_queue_group *queue_group;
4321 struct pqi_general_admin_request request;
4322 struct pqi_general_admin_response response;
4324 queue_group = &ctrl_info->queue_groups[group_number];
4327 * Create IQ (Inbound Queue - host to device queue) for
4330 memset(&request, 0, sizeof(request));
4331 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4332 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4333 &request.header.iu_length);
4334 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_IQ;
4335 put_unaligned_le16(queue_group->iq_id[RAID_PATH],
4336 &request.data.create_operational_iq.queue_id);
4338 (u64)queue_group->iq_element_array_bus_addr[RAID_PATH],
4339 &request.data.create_operational_iq.element_array_addr);
4340 put_unaligned_le64((u64)queue_group->iq_ci_bus_addr[RAID_PATH],
4341 &request.data.create_operational_iq.ci_addr);
4342 put_unaligned_le16(ctrl_info->num_elements_per_iq,
4343 &request.data.create_operational_iq.num_elements);
4344 put_unaligned_le16(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH / 16,
4345 &request.data.create_operational_iq.element_length);
4346 request.data.create_operational_iq.queue_protocol = PQI_PROTOCOL_SOP;
4348 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4351 dev_err(&ctrl_info->pci_dev->dev,
4352 "error creating inbound RAID queue\n");
4356 queue_group->iq_pi[RAID_PATH] = ctrl_info->iomem_base +
4357 PQI_DEVICE_REGISTERS_OFFSET +
4359 &response.data.create_operational_iq.iq_pi_offset);
4362 * Create IQ (Inbound Queue - host to device queue) for
4363 * Advanced I/O (AIO) path.
4365 memset(&request, 0, sizeof(request));
4366 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4367 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4368 &request.header.iu_length);
4369 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_IQ;
4370 put_unaligned_le16(queue_group->iq_id[AIO_PATH],
4371 &request.data.create_operational_iq.queue_id);
4372 put_unaligned_le64((u64)queue_group->
4373 iq_element_array_bus_addr[AIO_PATH],
4374 &request.data.create_operational_iq.element_array_addr);
4375 put_unaligned_le64((u64)queue_group->iq_ci_bus_addr[AIO_PATH],
4376 &request.data.create_operational_iq.ci_addr);
4377 put_unaligned_le16(ctrl_info->num_elements_per_iq,
4378 &request.data.create_operational_iq.num_elements);
4379 put_unaligned_le16(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH / 16,
4380 &request.data.create_operational_iq.element_length);
4381 request.data.create_operational_iq.queue_protocol = PQI_PROTOCOL_SOP;
4383 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4386 dev_err(&ctrl_info->pci_dev->dev,
4387 "error creating inbound AIO queue\n");
4391 queue_group->iq_pi[AIO_PATH] = ctrl_info->iomem_base +
4392 PQI_DEVICE_REGISTERS_OFFSET +
4394 &response.data.create_operational_iq.iq_pi_offset);
4397 * Designate the 2nd IQ as the AIO path. By default, all IQs are
4398 * assumed to be for RAID path I/O unless we change the queue's
4401 memset(&request, 0, sizeof(request));
4402 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4403 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4404 &request.header.iu_length);
4405 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CHANGE_IQ_PROPERTY;
4406 put_unaligned_le16(queue_group->iq_id[AIO_PATH],
4407 &request.data.change_operational_iq_properties.queue_id);
4408 put_unaligned_le32(PQI_IQ_PROPERTY_IS_AIO_QUEUE,
4409 &request.data.change_operational_iq_properties.vendor_specific);
4411 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4414 dev_err(&ctrl_info->pci_dev->dev,
4415 "error changing queue property\n");
4420 * Create OQ (Outbound Queue - device to host queue).
4422 memset(&request, 0, sizeof(request));
4423 request.header.iu_type = PQI_REQUEST_IU_GENERAL_ADMIN;
4424 put_unaligned_le16(PQI_GENERAL_ADMIN_IU_LENGTH,
4425 &request.header.iu_length);
4426 request.function_code = PQI_GENERAL_ADMIN_FUNCTION_CREATE_OQ;
4427 put_unaligned_le16(queue_group->oq_id,
4428 &request.data.create_operational_oq.queue_id);
4429 put_unaligned_le64((u64)queue_group->oq_element_array_bus_addr,
4430 &request.data.create_operational_oq.element_array_addr);
4431 put_unaligned_le64((u64)queue_group->oq_pi_bus_addr,
4432 &request.data.create_operational_oq.pi_addr);
4433 put_unaligned_le16(ctrl_info->num_elements_per_oq,
4434 &request.data.create_operational_oq.num_elements);
4435 put_unaligned_le16(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH / 16,
4436 &request.data.create_operational_oq.element_length);
4437 request.data.create_operational_oq.queue_protocol = PQI_PROTOCOL_SOP;
4438 put_unaligned_le16(queue_group->int_msg_num,
4439 &request.data.create_operational_oq.int_msg_num);
4441 rc = pqi_submit_admin_request_synchronous(ctrl_info, &request,
4444 dev_err(&ctrl_info->pci_dev->dev,
4445 "error creating outbound queue\n");
4449 queue_group->oq_ci = ctrl_info->iomem_base +
4450 PQI_DEVICE_REGISTERS_OFFSET +
4452 &response.data.create_operational_oq.oq_ci_offset);
4457 static int pqi_create_queues(struct pqi_ctrl_info *ctrl_info)
4462 rc = pqi_create_event_queue(ctrl_info);
4464 dev_err(&ctrl_info->pci_dev->dev,
4465 "error creating event queue\n");
4469 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
4470 rc = pqi_create_queue_group(ctrl_info, i);
4472 dev_err(&ctrl_info->pci_dev->dev,
4473 "error creating queue group number %u/%u\n",
4474 i, ctrl_info->num_queue_groups);
4482 #define PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH \
4483 (offsetof(struct pqi_event_config, descriptors) + \
4484 (PQI_MAX_EVENT_DESCRIPTORS * sizeof(struct pqi_event_descriptor)))
4486 static int pqi_configure_events(struct pqi_ctrl_info *ctrl_info,
4491 struct pqi_event_config *event_config;
4492 struct pqi_event_descriptor *event_descriptor;
4493 struct pqi_general_management_request request;
4495 event_config = kmalloc(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
4500 memset(&request, 0, sizeof(request));
4502 request.header.iu_type = PQI_REQUEST_IU_REPORT_VENDOR_EVENT_CONFIG;
4503 put_unaligned_le16(offsetof(struct pqi_general_management_request,
4504 data.report_event_configuration.sg_descriptors[1]) -
4505 PQI_REQUEST_HEADER_LENGTH, &request.header.iu_length);
4506 put_unaligned_le32(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
4507 &request.data.report_event_configuration.buffer_length);
4509 rc = pqi_map_single(ctrl_info->pci_dev,
4510 request.data.report_event_configuration.sg_descriptors,
4511 event_config, PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
4516 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
4517 0, NULL, NO_TIMEOUT);
4519 pqi_pci_unmap(ctrl_info->pci_dev,
4520 request.data.report_event_configuration.sg_descriptors, 1,
4526 for (i = 0; i < event_config->num_event_descriptors; i++) {
4527 event_descriptor = &event_config->descriptors[i];
4528 if (enable_events &&
4529 pqi_is_supported_event(event_descriptor->event_type))
4530 put_unaligned_le16(ctrl_info->event_queue.oq_id,
4531 &event_descriptor->oq_id);
4533 put_unaligned_le16(0, &event_descriptor->oq_id);
4536 memset(&request, 0, sizeof(request));
4538 request.header.iu_type = PQI_REQUEST_IU_SET_VENDOR_EVENT_CONFIG;
4539 put_unaligned_le16(offsetof(struct pqi_general_management_request,
4540 data.report_event_configuration.sg_descriptors[1]) -
4541 PQI_REQUEST_HEADER_LENGTH, &request.header.iu_length);
4542 put_unaligned_le32(PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
4543 &request.data.report_event_configuration.buffer_length);
4545 rc = pqi_map_single(ctrl_info->pci_dev,
4546 request.data.report_event_configuration.sg_descriptors,
4547 event_config, PQI_REPORT_EVENT_CONFIG_BUFFER_LENGTH,
4552 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header, 0,
4555 pqi_pci_unmap(ctrl_info->pci_dev,
4556 request.data.report_event_configuration.sg_descriptors, 1,
4560 kfree(event_config);
4565 static inline int pqi_enable_events(struct pqi_ctrl_info *ctrl_info)
4567 return pqi_configure_events(ctrl_info, true);
4570 static inline int pqi_disable_events(struct pqi_ctrl_info *ctrl_info)
4572 return pqi_configure_events(ctrl_info, false);
4575 static void pqi_free_all_io_requests(struct pqi_ctrl_info *ctrl_info)
4579 size_t sg_chain_buffer_length;
4580 struct pqi_io_request *io_request;
4582 if (!ctrl_info->io_request_pool)
4585 dev = &ctrl_info->pci_dev->dev;
4586 sg_chain_buffer_length = ctrl_info->sg_chain_buffer_length;
4587 io_request = ctrl_info->io_request_pool;
4589 for (i = 0; i < ctrl_info->max_io_slots; i++) {
4590 kfree(io_request->iu);
4591 if (!io_request->sg_chain_buffer)
4593 dma_free_coherent(dev, sg_chain_buffer_length,
4594 io_request->sg_chain_buffer,
4595 io_request->sg_chain_buffer_dma_handle);
4599 kfree(ctrl_info->io_request_pool);
4600 ctrl_info->io_request_pool = NULL;
4603 static inline int pqi_alloc_error_buffer(struct pqi_ctrl_info *ctrl_info)
4605 ctrl_info->error_buffer = dma_zalloc_coherent(&ctrl_info->pci_dev->dev,
4606 ctrl_info->error_buffer_length,
4607 &ctrl_info->error_buffer_dma_handle, GFP_KERNEL);
4609 if (!ctrl_info->error_buffer)
4615 static int pqi_alloc_io_resources(struct pqi_ctrl_info *ctrl_info)
4618 void *sg_chain_buffer;
4619 size_t sg_chain_buffer_length;
4620 dma_addr_t sg_chain_buffer_dma_handle;
4622 struct pqi_io_request *io_request;
4624 ctrl_info->io_request_pool =
4625 kcalloc(ctrl_info->max_io_slots,
4626 sizeof(ctrl_info->io_request_pool[0]), GFP_KERNEL);
4628 if (!ctrl_info->io_request_pool) {
4629 dev_err(&ctrl_info->pci_dev->dev,
4630 "failed to allocate I/O request pool\n");
4634 dev = &ctrl_info->pci_dev->dev;
4635 sg_chain_buffer_length = ctrl_info->sg_chain_buffer_length;
4636 io_request = ctrl_info->io_request_pool;
4638 for (i = 0; i < ctrl_info->max_io_slots; i++) {
4640 kmalloc(ctrl_info->max_inbound_iu_length, GFP_KERNEL);
4642 if (!io_request->iu) {
4643 dev_err(&ctrl_info->pci_dev->dev,
4644 "failed to allocate IU buffers\n");
4648 sg_chain_buffer = dma_alloc_coherent(dev,
4649 sg_chain_buffer_length, &sg_chain_buffer_dma_handle,
4652 if (!sg_chain_buffer) {
4653 dev_err(&ctrl_info->pci_dev->dev,
4654 "failed to allocate PQI scatter-gather chain buffers\n");
4658 io_request->index = i;
4659 io_request->sg_chain_buffer = sg_chain_buffer;
4660 io_request->sg_chain_buffer_dma_handle =
4661 sg_chain_buffer_dma_handle;
4668 pqi_free_all_io_requests(ctrl_info);
4674 * Calculate required resources that are sized based on max. outstanding
4675 * requests and max. transfer size.
4678 static void pqi_calculate_io_resources(struct pqi_ctrl_info *ctrl_info)
4680 u32 max_transfer_size;
4683 ctrl_info->scsi_ml_can_queue =
4684 ctrl_info->max_outstanding_requests - PQI_RESERVED_IO_SLOTS;
4685 ctrl_info->max_io_slots = ctrl_info->max_outstanding_requests;
4687 ctrl_info->error_buffer_length =
4688 ctrl_info->max_io_slots * PQI_ERROR_BUFFER_ELEMENT_LENGTH;
4691 max_transfer_size = min(ctrl_info->max_transfer_size,
4692 PQI_MAX_TRANSFER_SIZE_KDUMP);
4694 max_transfer_size = min(ctrl_info->max_transfer_size,
4695 PQI_MAX_TRANSFER_SIZE);
4697 max_sg_entries = max_transfer_size / PAGE_SIZE;
4699 /* +1 to cover when the buffer is not page-aligned. */
4702 max_sg_entries = min(ctrl_info->max_sg_entries, max_sg_entries);
4704 max_transfer_size = (max_sg_entries - 1) * PAGE_SIZE;
4706 ctrl_info->sg_chain_buffer_length =
4707 (max_sg_entries * sizeof(struct pqi_sg_descriptor)) +
4708 PQI_EXTRA_SGL_MEMORY;
4709 ctrl_info->sg_tablesize = max_sg_entries;
4710 ctrl_info->max_sectors = max_transfer_size / 512;
4713 static void pqi_calculate_queue_resources(struct pqi_ctrl_info *ctrl_info)
4715 int num_queue_groups;
4716 u16 num_elements_per_iq;
4717 u16 num_elements_per_oq;
4719 if (reset_devices) {
4720 num_queue_groups = 1;
4723 int max_queue_groups;
4725 max_queue_groups = min(ctrl_info->max_inbound_queues / 2,
4726 ctrl_info->max_outbound_queues - 1);
4727 max_queue_groups = min(max_queue_groups, PQI_MAX_QUEUE_GROUPS);
4729 num_cpus = num_online_cpus();
4730 num_queue_groups = min(num_cpus, ctrl_info->max_msix_vectors);
4731 num_queue_groups = min(num_queue_groups, max_queue_groups);
4734 ctrl_info->num_queue_groups = num_queue_groups;
4735 ctrl_info->max_hw_queue_index = num_queue_groups - 1;
4738 * Make sure that the max. inbound IU length is an even multiple
4739 * of our inbound element length.
4741 ctrl_info->max_inbound_iu_length =
4742 (ctrl_info->max_inbound_iu_length_per_firmware /
4743 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) *
4744 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH;
4746 num_elements_per_iq =
4747 (ctrl_info->max_inbound_iu_length /
4748 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
4750 /* Add one because one element in each queue is unusable. */
4751 num_elements_per_iq++;
4753 num_elements_per_iq = min(num_elements_per_iq,
4754 ctrl_info->max_elements_per_iq);
4756 num_elements_per_oq = ((num_elements_per_iq - 1) * 2) + 1;
4757 num_elements_per_oq = min(num_elements_per_oq,
4758 ctrl_info->max_elements_per_oq);
4760 ctrl_info->num_elements_per_iq = num_elements_per_iq;
4761 ctrl_info->num_elements_per_oq = num_elements_per_oq;
4763 ctrl_info->max_sg_per_iu =
4764 ((ctrl_info->max_inbound_iu_length -
4765 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH) /
4766 sizeof(struct pqi_sg_descriptor)) +
4767 PQI_MAX_EMBEDDED_SG_DESCRIPTORS;
4770 static inline void pqi_set_sg_descriptor(
4771 struct pqi_sg_descriptor *sg_descriptor, struct scatterlist *sg)
4773 u64 address = (u64)sg_dma_address(sg);
4774 unsigned int length = sg_dma_len(sg);
4776 put_unaligned_le64(address, &sg_descriptor->address);
4777 put_unaligned_le32(length, &sg_descriptor->length);
4778 put_unaligned_le32(0, &sg_descriptor->flags);
4781 static int pqi_build_raid_sg_list(struct pqi_ctrl_info *ctrl_info,
4782 struct pqi_raid_path_request *request, struct scsi_cmnd *scmd,
4783 struct pqi_io_request *io_request)
4789 unsigned int num_sg_in_iu;
4790 unsigned int max_sg_per_iu;
4791 struct scatterlist *sg;
4792 struct pqi_sg_descriptor *sg_descriptor;
4794 sg_count = scsi_dma_map(scmd);
4798 iu_length = offsetof(struct pqi_raid_path_request, sg_descriptors) -
4799 PQI_REQUEST_HEADER_LENGTH;
4804 sg = scsi_sglist(scmd);
4805 sg_descriptor = request->sg_descriptors;
4806 max_sg_per_iu = ctrl_info->max_sg_per_iu - 1;
4812 pqi_set_sg_descriptor(sg_descriptor, sg);
4819 if (i == max_sg_per_iu) {
4821 (u64)io_request->sg_chain_buffer_dma_handle,
4822 &sg_descriptor->address);
4823 put_unaligned_le32((sg_count - num_sg_in_iu)
4824 * sizeof(*sg_descriptor),
4825 &sg_descriptor->length);
4826 put_unaligned_le32(CISS_SG_CHAIN,
4827 &sg_descriptor->flags);
4830 sg_descriptor = io_request->sg_chain_buffer;
4835 put_unaligned_le32(CISS_SG_LAST, &sg_descriptor->flags);
4836 request->partial = chained;
4837 iu_length += num_sg_in_iu * sizeof(*sg_descriptor);
4840 put_unaligned_le16(iu_length, &request->header.iu_length);
4845 static int pqi_build_aio_sg_list(struct pqi_ctrl_info *ctrl_info,
4846 struct pqi_aio_path_request *request, struct scsi_cmnd *scmd,
4847 struct pqi_io_request *io_request)
4853 unsigned int num_sg_in_iu;
4854 unsigned int max_sg_per_iu;
4855 struct scatterlist *sg;
4856 struct pqi_sg_descriptor *sg_descriptor;
4858 sg_count = scsi_dma_map(scmd);
4862 iu_length = offsetof(struct pqi_aio_path_request, sg_descriptors) -
4863 PQI_REQUEST_HEADER_LENGTH;
4869 sg = scsi_sglist(scmd);
4870 sg_descriptor = request->sg_descriptors;
4871 max_sg_per_iu = ctrl_info->max_sg_per_iu - 1;
4876 pqi_set_sg_descriptor(sg_descriptor, sg);
4883 if (i == max_sg_per_iu) {
4885 (u64)io_request->sg_chain_buffer_dma_handle,
4886 &sg_descriptor->address);
4887 put_unaligned_le32((sg_count - num_sg_in_iu)
4888 * sizeof(*sg_descriptor),
4889 &sg_descriptor->length);
4890 put_unaligned_le32(CISS_SG_CHAIN,
4891 &sg_descriptor->flags);
4894 sg_descriptor = io_request->sg_chain_buffer;
4899 put_unaligned_le32(CISS_SG_LAST, &sg_descriptor->flags);
4900 request->partial = chained;
4901 iu_length += num_sg_in_iu * sizeof(*sg_descriptor);
4904 put_unaligned_le16(iu_length, &request->header.iu_length);
4905 request->num_sg_descriptors = num_sg_in_iu;
4910 static void pqi_raid_io_complete(struct pqi_io_request *io_request,
4913 struct scsi_cmnd *scmd;
4915 scmd = io_request->scmd;
4916 pqi_free_io_request(io_request);
4917 scsi_dma_unmap(scmd);
4918 pqi_scsi_done(scmd);
4921 static int pqi_raid_submit_scsi_cmd_with_io_request(
4922 struct pqi_ctrl_info *ctrl_info, struct pqi_io_request *io_request,
4923 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
4924 struct pqi_queue_group *queue_group)
4928 struct pqi_raid_path_request *request;
4930 io_request->io_complete_callback = pqi_raid_io_complete;
4931 io_request->scmd = scmd;
4933 request = io_request->iu;
4935 offsetof(struct pqi_raid_path_request, sg_descriptors));
4937 request->header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO;
4938 put_unaligned_le32(scsi_bufflen(scmd), &request->buffer_length);
4939 request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
4940 put_unaligned_le16(io_request->index, &request->request_id);
4941 request->error_index = request->request_id;
4942 memcpy(request->lun_number, device->scsi3addr,
4943 sizeof(request->lun_number));
4945 cdb_length = min_t(size_t, scmd->cmd_len, sizeof(request->cdb));
4946 memcpy(request->cdb, scmd->cmnd, cdb_length);
4948 switch (cdb_length) {
4953 /* No bytes in the Additional CDB bytes field */
4954 request->additional_cdb_bytes_usage =
4955 SOP_ADDITIONAL_CDB_BYTES_0;
4958 /* 4 bytes in the Additional cdb field */
4959 request->additional_cdb_bytes_usage =
4960 SOP_ADDITIONAL_CDB_BYTES_4;
4963 /* 8 bytes in the Additional cdb field */
4964 request->additional_cdb_bytes_usage =
4965 SOP_ADDITIONAL_CDB_BYTES_8;
4968 /* 12 bytes in the Additional cdb field */
4969 request->additional_cdb_bytes_usage =
4970 SOP_ADDITIONAL_CDB_BYTES_12;
4974 /* 16 bytes in the Additional cdb field */
4975 request->additional_cdb_bytes_usage =
4976 SOP_ADDITIONAL_CDB_BYTES_16;
4980 switch (scmd->sc_data_direction) {
4982 request->data_direction = SOP_READ_FLAG;
4984 case DMA_FROM_DEVICE:
4985 request->data_direction = SOP_WRITE_FLAG;
4988 request->data_direction = SOP_NO_DIRECTION_FLAG;
4990 case DMA_BIDIRECTIONAL:
4991 request->data_direction = SOP_BIDIRECTIONAL;
4994 dev_err(&ctrl_info->pci_dev->dev,
4995 "unknown data direction: %d\n",
4996 scmd->sc_data_direction);
5000 rc = pqi_build_raid_sg_list(ctrl_info, request, scmd, io_request);
5002 pqi_free_io_request(io_request);
5003 return SCSI_MLQUEUE_HOST_BUSY;
5006 pqi_start_io(ctrl_info, queue_group, RAID_PATH, io_request);
5011 static inline int pqi_raid_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info,
5012 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
5013 struct pqi_queue_group *queue_group)
5015 struct pqi_io_request *io_request;
5017 io_request = pqi_alloc_io_request(ctrl_info);
5019 return pqi_raid_submit_scsi_cmd_with_io_request(ctrl_info, io_request,
5020 device, scmd, queue_group);
5023 static inline void pqi_schedule_bypass_retry(struct pqi_ctrl_info *ctrl_info)
5025 if (!pqi_ctrl_blocked(ctrl_info))
5026 schedule_work(&ctrl_info->raid_bypass_retry_work);
5029 static bool pqi_raid_bypass_retry_needed(struct pqi_io_request *io_request)
5031 struct scsi_cmnd *scmd;
5032 struct pqi_scsi_dev *device;
5033 struct pqi_ctrl_info *ctrl_info;
5035 if (!io_request->raid_bypass)
5038 scmd = io_request->scmd;
5039 if ((scmd->result & 0xff) == SAM_STAT_GOOD)
5041 if (host_byte(scmd->result) == DID_NO_CONNECT)
5044 device = scmd->device->hostdata;
5045 if (pqi_device_offline(device))
5048 ctrl_info = shost_to_hba(scmd->device->host);
5049 if (pqi_ctrl_offline(ctrl_info))
5055 static inline void pqi_add_to_raid_bypass_retry_list(
5056 struct pqi_ctrl_info *ctrl_info,
5057 struct pqi_io_request *io_request, bool at_head)
5059 unsigned long flags;
5061 spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags);
5063 list_add(&io_request->request_list_entry,
5064 &ctrl_info->raid_bypass_retry_list);
5066 list_add_tail(&io_request->request_list_entry,
5067 &ctrl_info->raid_bypass_retry_list);
5068 spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags);
5071 static void pqi_queued_raid_bypass_complete(struct pqi_io_request *io_request,
5074 struct scsi_cmnd *scmd;
5076 scmd = io_request->scmd;
5077 pqi_free_io_request(io_request);
5078 pqi_scsi_done(scmd);
5081 static void pqi_queue_raid_bypass_retry(struct pqi_io_request *io_request)
5083 struct scsi_cmnd *scmd;
5084 struct pqi_ctrl_info *ctrl_info;
5086 io_request->io_complete_callback = pqi_queued_raid_bypass_complete;
5087 scmd = io_request->scmd;
5089 ctrl_info = shost_to_hba(scmd->device->host);
5091 pqi_add_to_raid_bypass_retry_list(ctrl_info, io_request, false);
5092 pqi_schedule_bypass_retry(ctrl_info);
5095 static int pqi_retry_raid_bypass(struct pqi_io_request *io_request)
5097 struct scsi_cmnd *scmd;
5098 struct pqi_scsi_dev *device;
5099 struct pqi_ctrl_info *ctrl_info;
5100 struct pqi_queue_group *queue_group;
5102 scmd = io_request->scmd;
5103 device = scmd->device->hostdata;
5104 if (pqi_device_in_reset(device)) {
5105 pqi_free_io_request(io_request);
5106 set_host_byte(scmd, DID_RESET);
5107 pqi_scsi_done(scmd);
5111 ctrl_info = shost_to_hba(scmd->device->host);
5112 queue_group = io_request->queue_group;
5114 pqi_reinit_io_request(io_request);
5116 return pqi_raid_submit_scsi_cmd_with_io_request(ctrl_info, io_request,
5117 device, scmd, queue_group);
5120 static inline struct pqi_io_request *pqi_next_queued_raid_bypass_request(
5121 struct pqi_ctrl_info *ctrl_info)
5123 unsigned long flags;
5124 struct pqi_io_request *io_request;
5126 spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags);
5127 io_request = list_first_entry_or_null(
5128 &ctrl_info->raid_bypass_retry_list,
5129 struct pqi_io_request, request_list_entry);
5131 list_del(&io_request->request_list_entry);
5132 spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags);
5137 static void pqi_retry_raid_bypass_requests(struct pqi_ctrl_info *ctrl_info)
5140 struct pqi_io_request *io_request;
5142 pqi_ctrl_busy(ctrl_info);
5145 if (pqi_ctrl_blocked(ctrl_info))
5147 io_request = pqi_next_queued_raid_bypass_request(ctrl_info);
5150 rc = pqi_retry_raid_bypass(io_request);
5152 pqi_add_to_raid_bypass_retry_list(ctrl_info, io_request,
5154 pqi_schedule_bypass_retry(ctrl_info);
5159 pqi_ctrl_unbusy(ctrl_info);
5162 static void pqi_raid_bypass_retry_worker(struct work_struct *work)
5164 struct pqi_ctrl_info *ctrl_info;
5166 ctrl_info = container_of(work, struct pqi_ctrl_info,
5167 raid_bypass_retry_work);
5168 pqi_retry_raid_bypass_requests(ctrl_info);
5171 static void pqi_clear_all_queued_raid_bypass_retries(
5172 struct pqi_ctrl_info *ctrl_info)
5174 unsigned long flags;
5176 spin_lock_irqsave(&ctrl_info->raid_bypass_retry_list_lock, flags);
5177 INIT_LIST_HEAD(&ctrl_info->raid_bypass_retry_list);
5178 spin_unlock_irqrestore(&ctrl_info->raid_bypass_retry_list_lock, flags);
5181 static void pqi_aio_io_complete(struct pqi_io_request *io_request,
5184 struct scsi_cmnd *scmd;
5186 scmd = io_request->scmd;
5187 scsi_dma_unmap(scmd);
5188 if (io_request->status == -EAGAIN)
5189 set_host_byte(scmd, DID_IMM_RETRY);
5190 else if (pqi_raid_bypass_retry_needed(io_request)) {
5191 pqi_queue_raid_bypass_retry(io_request);
5194 pqi_free_io_request(io_request);
5195 pqi_scsi_done(scmd);
5198 static inline int pqi_aio_submit_scsi_cmd(struct pqi_ctrl_info *ctrl_info,
5199 struct pqi_scsi_dev *device, struct scsi_cmnd *scmd,
5200 struct pqi_queue_group *queue_group)
5202 return pqi_aio_submit_io(ctrl_info, scmd, device->aio_handle,
5203 scmd->cmnd, scmd->cmd_len, queue_group, NULL, false);
5206 static int pqi_aio_submit_io(struct pqi_ctrl_info *ctrl_info,
5207 struct scsi_cmnd *scmd, u32 aio_handle, u8 *cdb,
5208 unsigned int cdb_length, struct pqi_queue_group *queue_group,
5209 struct pqi_encryption_info *encryption_info, bool raid_bypass)
5212 struct pqi_io_request *io_request;
5213 struct pqi_aio_path_request *request;
5215 io_request = pqi_alloc_io_request(ctrl_info);
5216 io_request->io_complete_callback = pqi_aio_io_complete;
5217 io_request->scmd = scmd;
5218 io_request->raid_bypass = raid_bypass;
5220 request = io_request->iu;
5222 offsetof(struct pqi_raid_path_request, sg_descriptors));
5224 request->header.iu_type = PQI_REQUEST_IU_AIO_PATH_IO;
5225 put_unaligned_le32(aio_handle, &request->nexus_id);
5226 put_unaligned_le32(scsi_bufflen(scmd), &request->buffer_length);
5227 request->task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
5228 put_unaligned_le16(io_request->index, &request->request_id);
5229 request->error_index = request->request_id;
5230 if (cdb_length > sizeof(request->cdb))
5231 cdb_length = sizeof(request->cdb);
5232 request->cdb_length = cdb_length;
5233 memcpy(request->cdb, cdb, cdb_length);
5235 switch (scmd->sc_data_direction) {
5237 request->data_direction = SOP_READ_FLAG;
5239 case DMA_FROM_DEVICE:
5240 request->data_direction = SOP_WRITE_FLAG;
5243 request->data_direction = SOP_NO_DIRECTION_FLAG;
5245 case DMA_BIDIRECTIONAL:
5246 request->data_direction = SOP_BIDIRECTIONAL;
5249 dev_err(&ctrl_info->pci_dev->dev,
5250 "unknown data direction: %d\n",
5251 scmd->sc_data_direction);
5255 if (encryption_info) {
5256 request->encryption_enable = true;
5257 put_unaligned_le16(encryption_info->data_encryption_key_index,
5258 &request->data_encryption_key_index);
5259 put_unaligned_le32(encryption_info->encrypt_tweak_lower,
5260 &request->encrypt_tweak_lower);
5261 put_unaligned_le32(encryption_info->encrypt_tweak_upper,
5262 &request->encrypt_tweak_upper);
5265 rc = pqi_build_aio_sg_list(ctrl_info, request, scmd, io_request);
5267 pqi_free_io_request(io_request);
5268 return SCSI_MLQUEUE_HOST_BUSY;
5271 pqi_start_io(ctrl_info, queue_group, AIO_PATH, io_request);
5276 static inline u16 pqi_get_hw_queue(struct pqi_ctrl_info *ctrl_info,
5277 struct scsi_cmnd *scmd)
5281 hw_queue = blk_mq_unique_tag_to_hwq(blk_mq_unique_tag(scmd->request));
5282 if (hw_queue > ctrl_info->max_hw_queue_index)
5289 * This function gets called just before we hand the completed SCSI request
5293 void pqi_prep_for_scsi_done(struct scsi_cmnd *scmd)
5295 struct pqi_scsi_dev *device;
5297 if (!scmd->device) {
5298 set_host_byte(scmd, DID_NO_CONNECT);
5302 device = scmd->device->hostdata;
5304 set_host_byte(scmd, DID_NO_CONNECT);
5308 atomic_dec(&device->scsi_cmds_outstanding);
5311 static int pqi_scsi_queue_command(struct Scsi_Host *shost,
5312 struct scsi_cmnd *scmd)
5315 struct pqi_ctrl_info *ctrl_info;
5316 struct pqi_scsi_dev *device;
5318 struct pqi_queue_group *queue_group;
5321 device = scmd->device->hostdata;
5322 ctrl_info = shost_to_hba(shost);
5325 set_host_byte(scmd, DID_NO_CONNECT);
5326 pqi_scsi_done(scmd);
5330 atomic_inc(&device->scsi_cmds_outstanding);
5332 if (pqi_ctrl_offline(ctrl_info) || pqi_device_in_remove(ctrl_info,
5334 set_host_byte(scmd, DID_NO_CONNECT);
5335 pqi_scsi_done(scmd);
5339 pqi_ctrl_busy(ctrl_info);
5340 if (pqi_ctrl_blocked(ctrl_info) || pqi_device_in_reset(device) ||
5341 pqi_ctrl_in_ofa(ctrl_info)) {
5342 rc = SCSI_MLQUEUE_HOST_BUSY;
5347 * This is necessary because the SML doesn't zero out this field during
5352 hw_queue = pqi_get_hw_queue(ctrl_info, scmd);
5353 queue_group = &ctrl_info->queue_groups[hw_queue];
5355 if (pqi_is_logical_device(device)) {
5356 raid_bypassed = false;
5357 if (device->raid_bypass_enabled &&
5358 !blk_rq_is_passthrough(scmd->request)) {
5359 rc = pqi_raid_bypass_submit_scsi_cmd(ctrl_info, device,
5361 if (rc == 0 || rc == SCSI_MLQUEUE_HOST_BUSY)
5362 raid_bypassed = true;
5365 rc = pqi_raid_submit_scsi_cmd(ctrl_info, device, scmd,
5368 if (device->aio_enabled)
5369 rc = pqi_aio_submit_scsi_cmd(ctrl_info, device, scmd,
5372 rc = pqi_raid_submit_scsi_cmd(ctrl_info, device, scmd,
5377 pqi_ctrl_unbusy(ctrl_info);
5379 atomic_dec(&device->scsi_cmds_outstanding);
5384 static int pqi_wait_until_queued_io_drained(struct pqi_ctrl_info *ctrl_info,
5385 struct pqi_queue_group *queue_group)
5388 unsigned long flags;
5391 for (path = 0; path < 2; path++) {
5394 &queue_group->submit_lock[path], flags);
5396 list_empty(&queue_group->request_list[path]);
5397 spin_unlock_irqrestore(
5398 &queue_group->submit_lock[path], flags);
5401 pqi_check_ctrl_health(ctrl_info);
5402 if (pqi_ctrl_offline(ctrl_info))
5404 usleep_range(1000, 2000);
5411 static int pqi_wait_until_inbound_queues_empty(struct pqi_ctrl_info *ctrl_info)
5416 struct pqi_queue_group *queue_group;
5420 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
5421 queue_group = &ctrl_info->queue_groups[i];
5423 rc = pqi_wait_until_queued_io_drained(ctrl_info, queue_group);
5427 for (path = 0; path < 2; path++) {
5428 iq_pi = queue_group->iq_pi_copy[path];
5431 iq_ci = readl(queue_group->iq_ci[path]);
5434 pqi_check_ctrl_health(ctrl_info);
5435 if (pqi_ctrl_offline(ctrl_info))
5437 usleep_range(1000, 2000);
5445 static void pqi_fail_io_queued_for_device(struct pqi_ctrl_info *ctrl_info,
5446 struct pqi_scsi_dev *device)
5450 struct pqi_queue_group *queue_group;
5451 unsigned long flags;
5452 struct pqi_io_request *io_request;
5453 struct pqi_io_request *next;
5454 struct scsi_cmnd *scmd;
5455 struct pqi_scsi_dev *scsi_device;
5457 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
5458 queue_group = &ctrl_info->queue_groups[i];
5460 for (path = 0; path < 2; path++) {
5462 &queue_group->submit_lock[path], flags);
5464 list_for_each_entry_safe(io_request, next,
5465 &queue_group->request_list[path],
5466 request_list_entry) {
5467 scmd = io_request->scmd;
5471 scsi_device = scmd->device->hostdata;
5472 if (scsi_device != device)
5475 list_del(&io_request->request_list_entry);
5476 set_host_byte(scmd, DID_RESET);
5477 pqi_scsi_done(scmd);
5480 spin_unlock_irqrestore(
5481 &queue_group->submit_lock[path], flags);
5486 static void pqi_fail_io_queued_for_all_devices(struct pqi_ctrl_info *ctrl_info)
5490 struct pqi_queue_group *queue_group;
5491 unsigned long flags;
5492 struct pqi_io_request *io_request;
5493 struct pqi_io_request *next;
5494 struct scsi_cmnd *scmd;
5496 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
5497 queue_group = &ctrl_info->queue_groups[i];
5499 for (path = 0; path < 2; path++) {
5500 spin_lock_irqsave(&queue_group->submit_lock[path],
5503 list_for_each_entry_safe(io_request, next,
5504 &queue_group->request_list[path],
5505 request_list_entry) {
5507 scmd = io_request->scmd;
5511 list_del(&io_request->request_list_entry);
5512 set_host_byte(scmd, DID_RESET);
5513 pqi_scsi_done(scmd);
5516 spin_unlock_irqrestore(
5517 &queue_group->submit_lock[path], flags);
5522 static int pqi_device_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info,
5523 struct pqi_scsi_dev *device, unsigned long timeout_secs)
5525 unsigned long timeout;
5527 timeout = (timeout_secs * PQI_HZ) + jiffies;
5529 while (atomic_read(&device->scsi_cmds_outstanding)) {
5530 pqi_check_ctrl_health(ctrl_info);
5531 if (pqi_ctrl_offline(ctrl_info))
5533 if (timeout_secs != NO_TIMEOUT) {
5534 if (time_after(jiffies, timeout)) {
5535 dev_err(&ctrl_info->pci_dev->dev,
5536 "timed out waiting for pending IO\n");
5540 usleep_range(1000, 2000);
5546 static int pqi_ctrl_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info,
5547 unsigned long timeout_secs)
5550 unsigned long flags;
5551 unsigned long timeout;
5552 struct pqi_scsi_dev *device;
5554 timeout = (timeout_secs * PQI_HZ) + jiffies;
5558 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
5559 list_for_each_entry(device, &ctrl_info->scsi_device_list,
5560 scsi_device_list_entry) {
5561 if (atomic_read(&device->scsi_cmds_outstanding)) {
5566 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock,
5572 pqi_check_ctrl_health(ctrl_info);
5573 if (pqi_ctrl_offline(ctrl_info))
5576 if (timeout_secs != NO_TIMEOUT) {
5577 if (time_after(jiffies, timeout)) {
5578 dev_err(&ctrl_info->pci_dev->dev,
5579 "timed out waiting for pending IO\n");
5583 usleep_range(1000, 2000);
5589 static void pqi_lun_reset_complete(struct pqi_io_request *io_request,
5592 struct completion *waiting = context;
5597 #define PQI_LUN_RESET_TIMEOUT_SECS 10
5599 static int pqi_wait_for_lun_reset_completion(struct pqi_ctrl_info *ctrl_info,
5600 struct pqi_scsi_dev *device, struct completion *wait)
5605 if (wait_for_completion_io_timeout(wait,
5606 PQI_LUN_RESET_TIMEOUT_SECS * PQI_HZ)) {
5611 pqi_check_ctrl_health(ctrl_info);
5612 if (pqi_ctrl_offline(ctrl_info)) {
5621 static int pqi_lun_reset(struct pqi_ctrl_info *ctrl_info,
5622 struct pqi_scsi_dev *device)
5625 struct pqi_io_request *io_request;
5626 DECLARE_COMPLETION_ONSTACK(wait);
5627 struct pqi_task_management_request *request;
5629 io_request = pqi_alloc_io_request(ctrl_info);
5630 io_request->io_complete_callback = pqi_lun_reset_complete;
5631 io_request->context = &wait;
5633 request = io_request->iu;
5634 memset(request, 0, sizeof(*request));
5636 request->header.iu_type = PQI_REQUEST_IU_TASK_MANAGEMENT;
5637 put_unaligned_le16(sizeof(*request) - PQI_REQUEST_HEADER_LENGTH,
5638 &request->header.iu_length);
5639 put_unaligned_le16(io_request->index, &request->request_id);
5640 memcpy(request->lun_number, device->scsi3addr,
5641 sizeof(request->lun_number));
5642 request->task_management_function = SOP_TASK_MANAGEMENT_LUN_RESET;
5644 pqi_start_io(ctrl_info,
5645 &ctrl_info->queue_groups[PQI_DEFAULT_QUEUE_GROUP], RAID_PATH,
5648 rc = pqi_wait_for_lun_reset_completion(ctrl_info, device, &wait);
5650 rc = io_request->status;
5652 pqi_free_io_request(io_request);
5657 #define PQI_LUN_RESET_RETRIES 3
5658 #define PQI_LUN_RESET_RETRY_INTERVAL_MSECS 10000
5659 /* Performs a reset at the LUN level. */
5661 static int _pqi_device_reset(struct pqi_ctrl_info *ctrl_info,
5662 struct pqi_scsi_dev *device)
5665 unsigned int retries;
5666 unsigned long timeout_secs;
5668 for (retries = 0;;) {
5669 rc = pqi_lun_reset(ctrl_info, device);
5670 if (rc != -EAGAIN ||
5671 ++retries > PQI_LUN_RESET_RETRIES)
5673 msleep(PQI_LUN_RESET_RETRY_INTERVAL_MSECS);
5675 timeout_secs = rc ? PQI_LUN_RESET_TIMEOUT_SECS : NO_TIMEOUT;
5677 rc |= pqi_device_wait_for_pending_io(ctrl_info, device, timeout_secs);
5679 return rc == 0 ? SUCCESS : FAILED;
5682 static int pqi_device_reset(struct pqi_ctrl_info *ctrl_info,
5683 struct pqi_scsi_dev *device)
5687 mutex_lock(&ctrl_info->lun_reset_mutex);
5689 pqi_ctrl_block_requests(ctrl_info);
5690 pqi_ctrl_wait_until_quiesced(ctrl_info);
5691 pqi_fail_io_queued_for_device(ctrl_info, device);
5692 rc = pqi_wait_until_inbound_queues_empty(ctrl_info);
5693 pqi_device_reset_start(device);
5694 pqi_ctrl_unblock_requests(ctrl_info);
5699 rc = _pqi_device_reset(ctrl_info, device);
5701 pqi_device_reset_done(device);
5703 mutex_unlock(&ctrl_info->lun_reset_mutex);
5707 static int pqi_eh_device_reset_handler(struct scsi_cmnd *scmd)
5710 struct Scsi_Host *shost;
5711 struct pqi_ctrl_info *ctrl_info;
5712 struct pqi_scsi_dev *device;
5714 shost = scmd->device->host;
5715 ctrl_info = shost_to_hba(shost);
5716 device = scmd->device->hostdata;
5718 dev_err(&ctrl_info->pci_dev->dev,
5719 "resetting scsi %d:%d:%d:%d\n",
5720 shost->host_no, device->bus, device->target, device->lun);
5722 pqi_check_ctrl_health(ctrl_info);
5723 if (pqi_ctrl_offline(ctrl_info)) {
5724 dev_err(&ctrl_info->pci_dev->dev,
5725 "controller %u offlined - cannot send device reset\n",
5726 ctrl_info->ctrl_id);
5731 pqi_wait_until_ofa_finished(ctrl_info);
5733 rc = pqi_device_reset(ctrl_info, device);
5735 dev_err(&ctrl_info->pci_dev->dev,
5736 "reset of scsi %d:%d:%d:%d: %s\n",
5737 shost->host_no, device->bus, device->target, device->lun,
5738 rc == SUCCESS ? "SUCCESS" : "FAILED");
5743 static int pqi_slave_alloc(struct scsi_device *sdev)
5745 struct pqi_scsi_dev *device;
5746 unsigned long flags;
5747 struct pqi_ctrl_info *ctrl_info;
5748 struct scsi_target *starget;
5749 struct sas_rphy *rphy;
5751 ctrl_info = shost_to_hba(sdev->host);
5753 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
5755 if (sdev_channel(sdev) == PQI_PHYSICAL_DEVICE_BUS) {
5756 starget = scsi_target(sdev);
5757 rphy = target_to_rphy(starget);
5758 device = pqi_find_device_by_sas_rphy(ctrl_info, rphy);
5760 device->target = sdev_id(sdev);
5761 device->lun = sdev->lun;
5762 device->target_lun_valid = true;
5765 device = pqi_find_scsi_dev(ctrl_info, sdev_channel(sdev),
5766 sdev_id(sdev), sdev->lun);
5770 sdev->hostdata = device;
5771 device->sdev = sdev;
5772 if (device->queue_depth) {
5773 device->advertised_queue_depth = device->queue_depth;
5774 scsi_change_queue_depth(sdev,
5775 device->advertised_queue_depth);
5777 if (pqi_is_logical_device(device))
5778 pqi_disable_write_same(sdev);
5780 sdev->allow_restart = 1;
5783 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
5788 static int pqi_map_queues(struct Scsi_Host *shost)
5790 struct pqi_ctrl_info *ctrl_info = shost_to_hba(shost);
5792 return blk_mq_pci_map_queues(&shost->tag_set.map[0],
5793 ctrl_info->pci_dev, 0);
5796 static int pqi_getpciinfo_ioctl(struct pqi_ctrl_info *ctrl_info,
5799 struct pci_dev *pci_dev;
5800 u32 subsystem_vendor;
5801 u32 subsystem_device;
5802 cciss_pci_info_struct pciinfo;
5807 pci_dev = ctrl_info->pci_dev;
5809 pciinfo.domain = pci_domain_nr(pci_dev->bus);
5810 pciinfo.bus = pci_dev->bus->number;
5811 pciinfo.dev_fn = pci_dev->devfn;
5812 subsystem_vendor = pci_dev->subsystem_vendor;
5813 subsystem_device = pci_dev->subsystem_device;
5814 pciinfo.board_id = ((subsystem_device << 16) & 0xffff0000) |
5817 if (copy_to_user(arg, &pciinfo, sizeof(pciinfo)))
5823 static int pqi_getdrivver_ioctl(void __user *arg)
5830 version = (DRIVER_MAJOR << 28) | (DRIVER_MINOR << 24) |
5831 (DRIVER_RELEASE << 16) | DRIVER_REVISION;
5833 if (copy_to_user(arg, &version, sizeof(version)))
5839 struct ciss_error_info {
5842 size_t sense_data_length;
5845 static void pqi_error_info_to_ciss(struct pqi_raid_error_info *pqi_error_info,
5846 struct ciss_error_info *ciss_error_info)
5848 int ciss_cmd_status;
5849 size_t sense_data_length;
5851 switch (pqi_error_info->data_out_result) {
5852 case PQI_DATA_IN_OUT_GOOD:
5853 ciss_cmd_status = CISS_CMD_STATUS_SUCCESS;
5855 case PQI_DATA_IN_OUT_UNDERFLOW:
5856 ciss_cmd_status = CISS_CMD_STATUS_DATA_UNDERRUN;
5858 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW:
5859 ciss_cmd_status = CISS_CMD_STATUS_DATA_OVERRUN;
5861 case PQI_DATA_IN_OUT_PROTOCOL_ERROR:
5862 case PQI_DATA_IN_OUT_BUFFER_ERROR:
5863 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_DESCRIPTOR_AREA:
5864 case PQI_DATA_IN_OUT_BUFFER_OVERFLOW_BRIDGE:
5865 case PQI_DATA_IN_OUT_ERROR:
5866 ciss_cmd_status = CISS_CMD_STATUS_PROTOCOL_ERROR;
5868 case PQI_DATA_IN_OUT_HARDWARE_ERROR:
5869 case PQI_DATA_IN_OUT_PCIE_FABRIC_ERROR:
5870 case PQI_DATA_IN_OUT_PCIE_COMPLETION_TIMEOUT:
5871 case PQI_DATA_IN_OUT_PCIE_COMPLETER_ABORT_RECEIVED:
5872 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST_RECEIVED:
5873 case PQI_DATA_IN_OUT_PCIE_ECRC_CHECK_FAILED:
5874 case PQI_DATA_IN_OUT_PCIE_UNSUPPORTED_REQUEST:
5875 case PQI_DATA_IN_OUT_PCIE_ACS_VIOLATION:
5876 case PQI_DATA_IN_OUT_PCIE_TLP_PREFIX_BLOCKED:
5877 case PQI_DATA_IN_OUT_PCIE_POISONED_MEMORY_READ:
5878 ciss_cmd_status = CISS_CMD_STATUS_HARDWARE_ERROR;
5880 case PQI_DATA_IN_OUT_UNSOLICITED_ABORT:
5881 ciss_cmd_status = CISS_CMD_STATUS_UNSOLICITED_ABORT;
5883 case PQI_DATA_IN_OUT_ABORTED:
5884 ciss_cmd_status = CISS_CMD_STATUS_ABORTED;
5886 case PQI_DATA_IN_OUT_TIMEOUT:
5887 ciss_cmd_status = CISS_CMD_STATUS_TIMEOUT;
5890 ciss_cmd_status = CISS_CMD_STATUS_TARGET_STATUS;
5895 get_unaligned_le16(&pqi_error_info->sense_data_length);
5896 if (sense_data_length == 0)
5898 get_unaligned_le16(&pqi_error_info->response_data_length);
5899 if (sense_data_length)
5900 if (sense_data_length > sizeof(pqi_error_info->data))
5901 sense_data_length = sizeof(pqi_error_info->data);
5903 ciss_error_info->scsi_status = pqi_error_info->status;
5904 ciss_error_info->command_status = ciss_cmd_status;
5905 ciss_error_info->sense_data_length = sense_data_length;
5908 static int pqi_passthru_ioctl(struct pqi_ctrl_info *ctrl_info, void __user *arg)
5911 char *kernel_buffer = NULL;
5913 size_t sense_data_length;
5914 IOCTL_Command_struct iocommand;
5915 struct pqi_raid_path_request request;
5916 struct pqi_raid_error_info pqi_error_info;
5917 struct ciss_error_info ciss_error_info;
5919 if (pqi_ctrl_offline(ctrl_info))
5923 if (!capable(CAP_SYS_RAWIO))
5925 if (copy_from_user(&iocommand, arg, sizeof(iocommand)))
5927 if (iocommand.buf_size < 1 &&
5928 iocommand.Request.Type.Direction != XFER_NONE)
5930 if (iocommand.Request.CDBLen > sizeof(request.cdb))
5932 if (iocommand.Request.Type.Type != TYPE_CMD)
5935 switch (iocommand.Request.Type.Direction) {
5939 case XFER_READ | XFER_WRITE:
5945 if (iocommand.buf_size > 0) {
5946 kernel_buffer = kmalloc(iocommand.buf_size, GFP_KERNEL);
5949 if (iocommand.Request.Type.Direction & XFER_WRITE) {
5950 if (copy_from_user(kernel_buffer, iocommand.buf,
5951 iocommand.buf_size)) {
5956 memset(kernel_buffer, 0, iocommand.buf_size);
5960 memset(&request, 0, sizeof(request));
5962 request.header.iu_type = PQI_REQUEST_IU_RAID_PATH_IO;
5963 iu_length = offsetof(struct pqi_raid_path_request, sg_descriptors) -
5964 PQI_REQUEST_HEADER_LENGTH;
5965 memcpy(request.lun_number, iocommand.LUN_info.LunAddrBytes,
5966 sizeof(request.lun_number));
5967 memcpy(request.cdb, iocommand.Request.CDB, iocommand.Request.CDBLen);
5968 request.additional_cdb_bytes_usage = SOP_ADDITIONAL_CDB_BYTES_0;
5970 switch (iocommand.Request.Type.Direction) {
5972 request.data_direction = SOP_NO_DIRECTION_FLAG;
5975 request.data_direction = SOP_WRITE_FLAG;
5978 request.data_direction = SOP_READ_FLAG;
5980 case XFER_READ | XFER_WRITE:
5981 request.data_direction = SOP_BIDIRECTIONAL;
5985 request.task_attribute = SOP_TASK_ATTRIBUTE_SIMPLE;
5987 if (iocommand.buf_size > 0) {
5988 put_unaligned_le32(iocommand.buf_size, &request.buffer_length);
5990 rc = pqi_map_single(ctrl_info->pci_dev,
5991 &request.sg_descriptors[0], kernel_buffer,
5992 iocommand.buf_size, DMA_BIDIRECTIONAL);
5996 iu_length += sizeof(request.sg_descriptors[0]);
5999 put_unaligned_le16(iu_length, &request.header.iu_length);
6001 rc = pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
6002 PQI_SYNC_FLAGS_INTERRUPTABLE, &pqi_error_info, NO_TIMEOUT);
6004 if (iocommand.buf_size > 0)
6005 pqi_pci_unmap(ctrl_info->pci_dev, request.sg_descriptors, 1,
6008 memset(&iocommand.error_info, 0, sizeof(iocommand.error_info));
6011 pqi_error_info_to_ciss(&pqi_error_info, &ciss_error_info);
6012 iocommand.error_info.ScsiStatus = ciss_error_info.scsi_status;
6013 iocommand.error_info.CommandStatus =
6014 ciss_error_info.command_status;
6015 sense_data_length = ciss_error_info.sense_data_length;
6016 if (sense_data_length) {
6017 if (sense_data_length >
6018 sizeof(iocommand.error_info.SenseInfo))
6020 sizeof(iocommand.error_info.SenseInfo);
6021 memcpy(iocommand.error_info.SenseInfo,
6022 pqi_error_info.data, sense_data_length);
6023 iocommand.error_info.SenseLen = sense_data_length;
6027 if (copy_to_user(arg, &iocommand, sizeof(iocommand))) {
6032 if (rc == 0 && iocommand.buf_size > 0 &&
6033 (iocommand.Request.Type.Direction & XFER_READ)) {
6034 if (copy_to_user(iocommand.buf, kernel_buffer,
6035 iocommand.buf_size)) {
6041 kfree(kernel_buffer);
6046 static int pqi_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
6049 struct pqi_ctrl_info *ctrl_info;
6051 ctrl_info = shost_to_hba(sdev->host);
6053 if (pqi_ctrl_in_ofa(ctrl_info))
6057 case CCISS_DEREGDISK:
6058 case CCISS_REGNEWDISK:
6060 rc = pqi_scan_scsi_devices(ctrl_info);
6062 case CCISS_GETPCIINFO:
6063 rc = pqi_getpciinfo_ioctl(ctrl_info, arg);
6065 case CCISS_GETDRIVVER:
6066 rc = pqi_getdrivver_ioctl(arg);
6068 case CCISS_PASSTHRU:
6069 rc = pqi_passthru_ioctl(ctrl_info, arg);
6079 static ssize_t pqi_version_show(struct device *dev,
6080 struct device_attribute *attr, char *buffer)
6083 struct Scsi_Host *shost;
6084 struct pqi_ctrl_info *ctrl_info;
6086 shost = class_to_shost(dev);
6087 ctrl_info = shost_to_hba(shost);
6089 count += snprintf(buffer + count, PAGE_SIZE - count,
6090 " driver: %s\n", DRIVER_VERSION BUILD_TIMESTAMP);
6092 count += snprintf(buffer + count, PAGE_SIZE - count,
6093 "firmware: %s\n", ctrl_info->firmware_version);
6098 static ssize_t pqi_host_rescan_store(struct device *dev,
6099 struct device_attribute *attr, const char *buffer, size_t count)
6101 struct Scsi_Host *shost = class_to_shost(dev);
6103 pqi_scan_start(shost);
6108 static ssize_t pqi_lockup_action_show(struct device *dev,
6109 struct device_attribute *attr, char *buffer)
6114 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) {
6115 if (pqi_lockup_actions[i].action == pqi_lockup_action)
6116 count += snprintf(buffer + count, PAGE_SIZE - count,
6117 "[%s] ", pqi_lockup_actions[i].name);
6119 count += snprintf(buffer + count, PAGE_SIZE - count,
6120 "%s ", pqi_lockup_actions[i].name);
6123 count += snprintf(buffer + count, PAGE_SIZE - count, "\n");
6128 static ssize_t pqi_lockup_action_store(struct device *dev,
6129 struct device_attribute *attr, const char *buffer, size_t count)
6133 char action_name_buffer[32];
6135 strlcpy(action_name_buffer, buffer, sizeof(action_name_buffer));
6136 action_name = strstrip(action_name_buffer);
6138 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) {
6139 if (strcmp(action_name, pqi_lockup_actions[i].name) == 0) {
6140 pqi_lockup_action = pqi_lockup_actions[i].action;
6148 static DEVICE_ATTR(version, 0444, pqi_version_show, NULL);
6149 static DEVICE_ATTR(rescan, 0200, NULL, pqi_host_rescan_store);
6150 static DEVICE_ATTR(lockup_action, 0644,
6151 pqi_lockup_action_show, pqi_lockup_action_store);
6153 static struct device_attribute *pqi_shost_attrs[] = {
6156 &dev_attr_lockup_action,
6160 static ssize_t pqi_unique_id_show(struct device *dev,
6161 struct device_attribute *attr, char *buffer)
6163 struct pqi_ctrl_info *ctrl_info;
6164 struct scsi_device *sdev;
6165 struct pqi_scsi_dev *device;
6166 unsigned long flags;
6167 unsigned char uid[16];
6169 sdev = to_scsi_device(dev);
6170 ctrl_info = shost_to_hba(sdev->host);
6172 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
6174 device = sdev->hostdata;
6176 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock,
6180 memcpy(uid, device->unique_id, sizeof(uid));
6182 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
6184 return snprintf(buffer, PAGE_SIZE,
6185 "%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X%02X\n",
6186 uid[0], uid[1], uid[2], uid[3],
6187 uid[4], uid[5], uid[6], uid[7],
6188 uid[8], uid[9], uid[10], uid[11],
6189 uid[12], uid[13], uid[14], uid[15]);
6192 static ssize_t pqi_lunid_show(struct device *dev,
6193 struct device_attribute *attr, char *buffer)
6195 struct pqi_ctrl_info *ctrl_info;
6196 struct scsi_device *sdev;
6197 struct pqi_scsi_dev *device;
6198 unsigned long flags;
6201 sdev = to_scsi_device(dev);
6202 ctrl_info = shost_to_hba(sdev->host);
6204 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
6206 device = sdev->hostdata;
6208 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock,
6212 memcpy(lunid, device->scsi3addr, sizeof(lunid));
6214 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
6216 return snprintf(buffer, PAGE_SIZE, "0x%8phN\n", lunid);
6220 static ssize_t pqi_path_info_show(struct device *dev,
6221 struct device_attribute *attr, char *buf)
6223 struct pqi_ctrl_info *ctrl_info;
6224 struct scsi_device *sdev;
6225 struct pqi_scsi_dev *device;
6226 unsigned long flags;
6231 u8 path_map_index = 0;
6233 unsigned char phys_connector[2];
6235 sdev = to_scsi_device(dev);
6236 ctrl_info = shost_to_hba(sdev->host);
6238 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
6240 device = sdev->hostdata;
6242 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock,
6248 for (i = 0; i < MAX_PATHS; i++) {
6249 path_map_index = 1<<i;
6250 if (i == device->active_path_index)
6252 else if (device->path_map & path_map_index)
6253 active = "Inactive";
6257 output_len += scnprintf(buf + output_len,
6258 PAGE_SIZE - output_len,
6259 "[%d:%d:%d:%d] %20.20s ",
6260 ctrl_info->scsi_host->host_no,
6261 device->bus, device->target,
6263 scsi_device_type(device->devtype));
6265 if (device->devtype == TYPE_RAID ||
6266 pqi_is_logical_device(device))
6269 memcpy(&phys_connector, &device->phys_connector[i],
6270 sizeof(phys_connector));
6271 if (phys_connector[0] < '0')
6272 phys_connector[0] = '0';
6273 if (phys_connector[1] < '0')
6274 phys_connector[1] = '0';
6276 output_len += scnprintf(buf + output_len,
6277 PAGE_SIZE - output_len,
6278 "PORT: %.2s ", phys_connector);
6280 box = device->box[i];
6281 if (box != 0 && box != 0xFF)
6282 output_len += scnprintf(buf + output_len,
6283 PAGE_SIZE - output_len,
6286 if ((device->devtype == TYPE_DISK ||
6287 device->devtype == TYPE_ZBC) &&
6288 pqi_expose_device(device))
6289 output_len += scnprintf(buf + output_len,
6290 PAGE_SIZE - output_len,
6294 output_len += scnprintf(buf + output_len,
6295 PAGE_SIZE - output_len,
6299 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
6304 static ssize_t pqi_sas_address_show(struct device *dev,
6305 struct device_attribute *attr, char *buffer)
6307 struct pqi_ctrl_info *ctrl_info;
6308 struct scsi_device *sdev;
6309 struct pqi_scsi_dev *device;
6310 unsigned long flags;
6313 sdev = to_scsi_device(dev);
6314 ctrl_info = shost_to_hba(sdev->host);
6316 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
6318 device = sdev->hostdata;
6319 if (pqi_is_logical_device(device)) {
6320 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock,
6324 sas_address = device->sas_address;
6326 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
6328 return snprintf(buffer, PAGE_SIZE, "0x%016llx\n", sas_address);
6331 static ssize_t pqi_ssd_smart_path_enabled_show(struct device *dev,
6332 struct device_attribute *attr, char *buffer)
6334 struct pqi_ctrl_info *ctrl_info;
6335 struct scsi_device *sdev;
6336 struct pqi_scsi_dev *device;
6337 unsigned long flags;
6339 sdev = to_scsi_device(dev);
6340 ctrl_info = shost_to_hba(sdev->host);
6342 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
6344 device = sdev->hostdata;
6345 buffer[0] = device->raid_bypass_enabled ? '1' : '0';
6349 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
6354 static ssize_t pqi_raid_level_show(struct device *dev,
6355 struct device_attribute *attr, char *buffer)
6357 struct pqi_ctrl_info *ctrl_info;
6358 struct scsi_device *sdev;
6359 struct pqi_scsi_dev *device;
6360 unsigned long flags;
6363 sdev = to_scsi_device(dev);
6364 ctrl_info = shost_to_hba(sdev->host);
6366 spin_lock_irqsave(&ctrl_info->scsi_device_list_lock, flags);
6368 device = sdev->hostdata;
6370 if (pqi_is_logical_device(device))
6371 raid_level = pqi_raid_level_to_string(device->raid_level);
6375 spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags);
6377 return snprintf(buffer, PAGE_SIZE, "%s\n", raid_level);
6380 static DEVICE_ATTR(lunid, 0444, pqi_lunid_show, NULL);
6381 static DEVICE_ATTR(unique_id, 0444, pqi_unique_id_show, NULL);
6382 static DEVICE_ATTR(path_info, 0444, pqi_path_info_show, NULL);
6383 static DEVICE_ATTR(sas_address, 0444, pqi_sas_address_show, NULL);
6384 static DEVICE_ATTR(ssd_smart_path_enabled, 0444,
6385 pqi_ssd_smart_path_enabled_show, NULL);
6386 static DEVICE_ATTR(raid_level, 0444, pqi_raid_level_show, NULL);
6388 static struct device_attribute *pqi_sdev_attrs[] = {
6390 &dev_attr_unique_id,
6391 &dev_attr_path_info,
6392 &dev_attr_sas_address,
6393 &dev_attr_ssd_smart_path_enabled,
6394 &dev_attr_raid_level,
6398 static struct scsi_host_template pqi_driver_template = {
6399 .module = THIS_MODULE,
6400 .name = DRIVER_NAME_SHORT,
6401 .proc_name = DRIVER_NAME_SHORT,
6402 .queuecommand = pqi_scsi_queue_command,
6403 .scan_start = pqi_scan_start,
6404 .scan_finished = pqi_scan_finished,
6406 .eh_device_reset_handler = pqi_eh_device_reset_handler,
6408 .slave_alloc = pqi_slave_alloc,
6409 .map_queues = pqi_map_queues,
6410 .sdev_attrs = pqi_sdev_attrs,
6411 .shost_attrs = pqi_shost_attrs,
6414 static int pqi_register_scsi(struct pqi_ctrl_info *ctrl_info)
6417 struct Scsi_Host *shost;
6419 shost = scsi_host_alloc(&pqi_driver_template, sizeof(ctrl_info));
6421 dev_err(&ctrl_info->pci_dev->dev,
6422 "scsi_host_alloc failed for controller %u\n",
6423 ctrl_info->ctrl_id);
6428 shost->n_io_port = 0;
6429 shost->this_id = -1;
6430 shost->max_channel = PQI_MAX_BUS;
6431 shost->max_cmd_len = MAX_COMMAND_SIZE;
6432 shost->max_lun = ~0;
6434 shost->max_sectors = ctrl_info->max_sectors;
6435 shost->can_queue = ctrl_info->scsi_ml_can_queue;
6436 shost->cmd_per_lun = shost->can_queue;
6437 shost->sg_tablesize = ctrl_info->sg_tablesize;
6438 shost->transportt = pqi_sas_transport_template;
6439 shost->irq = pci_irq_vector(ctrl_info->pci_dev, 0);
6440 shost->unique_id = shost->irq;
6441 shost->nr_hw_queues = ctrl_info->num_queue_groups;
6442 shost->hostdata[0] = (unsigned long)ctrl_info;
6444 rc = scsi_add_host(shost, &ctrl_info->pci_dev->dev);
6446 dev_err(&ctrl_info->pci_dev->dev,
6447 "scsi_add_host failed for controller %u\n",
6448 ctrl_info->ctrl_id);
6452 rc = pqi_add_sas_host(shost, ctrl_info);
6454 dev_err(&ctrl_info->pci_dev->dev,
6455 "add SAS host failed for controller %u\n",
6456 ctrl_info->ctrl_id);
6460 ctrl_info->scsi_host = shost;
6465 scsi_remove_host(shost);
6467 scsi_host_put(shost);
6472 static void pqi_unregister_scsi(struct pqi_ctrl_info *ctrl_info)
6474 struct Scsi_Host *shost;
6476 pqi_delete_sas_host(ctrl_info);
6478 shost = ctrl_info->scsi_host;
6482 scsi_remove_host(shost);
6483 scsi_host_put(shost);
6486 static int pqi_wait_for_pqi_reset_completion(struct pqi_ctrl_info *ctrl_info)
6489 struct pqi_device_registers __iomem *pqi_registers;
6490 unsigned long timeout;
6491 unsigned int timeout_msecs;
6492 union pqi_reset_register reset_reg;
6494 pqi_registers = ctrl_info->pqi_registers;
6495 timeout_msecs = readw(&pqi_registers->max_reset_timeout) * 100;
6496 timeout = msecs_to_jiffies(timeout_msecs) + jiffies;
6499 msleep(PQI_RESET_POLL_INTERVAL_MSECS);
6500 reset_reg.all_bits = readl(&pqi_registers->device_reset);
6501 if (reset_reg.bits.reset_action == PQI_RESET_ACTION_COMPLETED)
6503 pqi_check_ctrl_health(ctrl_info);
6504 if (pqi_ctrl_offline(ctrl_info)) {
6508 if (time_after(jiffies, timeout)) {
6517 static int pqi_reset(struct pqi_ctrl_info *ctrl_info)
6520 union pqi_reset_register reset_reg;
6522 if (ctrl_info->pqi_reset_quiesce_supported) {
6523 rc = sis_pqi_reset_quiesce(ctrl_info);
6525 dev_err(&ctrl_info->pci_dev->dev,
6526 "PQI reset failed during quiesce with error %d\n",
6532 reset_reg.all_bits = 0;
6533 reset_reg.bits.reset_type = PQI_RESET_TYPE_HARD_RESET;
6534 reset_reg.bits.reset_action = PQI_RESET_ACTION_RESET;
6536 writel(reset_reg.all_bits, &ctrl_info->pqi_registers->device_reset);
6538 rc = pqi_wait_for_pqi_reset_completion(ctrl_info);
6540 dev_err(&ctrl_info->pci_dev->dev,
6541 "PQI reset failed with error %d\n", rc);
6546 static int pqi_get_ctrl_firmware_version(struct pqi_ctrl_info *ctrl_info)
6549 struct bmic_identify_controller *identify;
6551 identify = kmalloc(sizeof(*identify), GFP_KERNEL);
6555 rc = pqi_identify_controller(ctrl_info, identify);
6559 memcpy(ctrl_info->firmware_version, identify->firmware_version,
6560 sizeof(identify->firmware_version));
6561 ctrl_info->firmware_version[sizeof(identify->firmware_version)] = '\0';
6562 snprintf(ctrl_info->firmware_version +
6563 strlen(ctrl_info->firmware_version),
6564 sizeof(ctrl_info->firmware_version),
6565 "-%u", get_unaligned_le16(&identify->firmware_build_number));
6573 struct pqi_config_table_section_info {
6574 struct pqi_ctrl_info *ctrl_info;
6577 void __iomem *section_iomem_addr;
6580 static inline bool pqi_is_firmware_feature_supported(
6581 struct pqi_config_table_firmware_features *firmware_features,
6582 unsigned int bit_position)
6584 unsigned int byte_index;
6586 byte_index = bit_position / BITS_PER_BYTE;
6588 if (byte_index >= le16_to_cpu(firmware_features->num_elements))
6591 return firmware_features->features_supported[byte_index] &
6592 (1 << (bit_position % BITS_PER_BYTE)) ? true : false;
6595 static inline bool pqi_is_firmware_feature_enabled(
6596 struct pqi_config_table_firmware_features *firmware_features,
6597 void __iomem *firmware_features_iomem_addr,
6598 unsigned int bit_position)
6600 unsigned int byte_index;
6601 u8 __iomem *features_enabled_iomem_addr;
6603 byte_index = (bit_position / BITS_PER_BYTE) +
6604 (le16_to_cpu(firmware_features->num_elements) * 2);
6606 features_enabled_iomem_addr = firmware_features_iomem_addr +
6607 offsetof(struct pqi_config_table_firmware_features,
6608 features_supported) + byte_index;
6610 return *((__force u8 *)features_enabled_iomem_addr) &
6611 (1 << (bit_position % BITS_PER_BYTE)) ? true : false;
6614 static inline void pqi_request_firmware_feature(
6615 struct pqi_config_table_firmware_features *firmware_features,
6616 unsigned int bit_position)
6618 unsigned int byte_index;
6620 byte_index = (bit_position / BITS_PER_BYTE) +
6621 le16_to_cpu(firmware_features->num_elements);
6623 firmware_features->features_supported[byte_index] |=
6624 (1 << (bit_position % BITS_PER_BYTE));
6627 static int pqi_config_table_update(struct pqi_ctrl_info *ctrl_info,
6628 u16 first_section, u16 last_section)
6630 struct pqi_vendor_general_request request;
6632 memset(&request, 0, sizeof(request));
6634 request.header.iu_type = PQI_REQUEST_IU_VENDOR_GENERAL;
6635 put_unaligned_le16(sizeof(request) - PQI_REQUEST_HEADER_LENGTH,
6636 &request.header.iu_length);
6637 put_unaligned_le16(PQI_VENDOR_GENERAL_CONFIG_TABLE_UPDATE,
6638 &request.function_code);
6639 put_unaligned_le16(first_section,
6640 &request.data.config_table_update.first_section);
6641 put_unaligned_le16(last_section,
6642 &request.data.config_table_update.last_section);
6644 return pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
6645 0, NULL, NO_TIMEOUT);
6648 static int pqi_enable_firmware_features(struct pqi_ctrl_info *ctrl_info,
6649 struct pqi_config_table_firmware_features *firmware_features,
6650 void __iomem *firmware_features_iomem_addr)
6652 void *features_requested;
6653 void __iomem *features_requested_iomem_addr;
6655 features_requested = firmware_features->features_supported +
6656 le16_to_cpu(firmware_features->num_elements);
6658 features_requested_iomem_addr = firmware_features_iomem_addr +
6659 (features_requested - (void *)firmware_features);
6661 memcpy_toio(features_requested_iomem_addr, features_requested,
6662 le16_to_cpu(firmware_features->num_elements));
6664 return pqi_config_table_update(ctrl_info,
6665 PQI_CONFIG_TABLE_SECTION_FIRMWARE_FEATURES,
6666 PQI_CONFIG_TABLE_SECTION_FIRMWARE_FEATURES);
6669 struct pqi_firmware_feature {
6671 unsigned int feature_bit;
6674 void (*feature_status)(struct pqi_ctrl_info *ctrl_info,
6675 struct pqi_firmware_feature *firmware_feature);
6678 static void pqi_firmware_feature_status(struct pqi_ctrl_info *ctrl_info,
6679 struct pqi_firmware_feature *firmware_feature)
6681 if (!firmware_feature->supported) {
6682 dev_info(&ctrl_info->pci_dev->dev, "%s not supported by controller\n",
6683 firmware_feature->feature_name);
6687 if (firmware_feature->enabled) {
6688 dev_info(&ctrl_info->pci_dev->dev,
6689 "%s enabled\n", firmware_feature->feature_name);
6693 dev_err(&ctrl_info->pci_dev->dev, "failed to enable %s\n",
6694 firmware_feature->feature_name);
6697 static inline void pqi_firmware_feature_update(struct pqi_ctrl_info *ctrl_info,
6698 struct pqi_firmware_feature *firmware_feature)
6700 if (firmware_feature->feature_status)
6701 firmware_feature->feature_status(ctrl_info, firmware_feature);
6704 static DEFINE_MUTEX(pqi_firmware_features_mutex);
6706 static struct pqi_firmware_feature pqi_firmware_features[] = {
6708 .feature_name = "Online Firmware Activation",
6709 .feature_bit = PQI_FIRMWARE_FEATURE_OFA,
6710 .feature_status = pqi_firmware_feature_status,
6713 .feature_name = "Serial Management Protocol",
6714 .feature_bit = PQI_FIRMWARE_FEATURE_SMP,
6715 .feature_status = pqi_firmware_feature_status,
6718 .feature_name = "New Soft Reset Handshake",
6719 .feature_bit = PQI_FIRMWARE_FEATURE_SOFT_RESET_HANDSHAKE,
6720 .feature_status = pqi_firmware_feature_status,
6724 static void pqi_process_firmware_features(
6725 struct pqi_config_table_section_info *section_info)
6728 struct pqi_ctrl_info *ctrl_info;
6729 struct pqi_config_table_firmware_features *firmware_features;
6730 void __iomem *firmware_features_iomem_addr;
6732 unsigned int num_features_supported;
6734 ctrl_info = section_info->ctrl_info;
6735 firmware_features = section_info->section;
6736 firmware_features_iomem_addr = section_info->section_iomem_addr;
6738 for (i = 0, num_features_supported = 0;
6739 i < ARRAY_SIZE(pqi_firmware_features); i++) {
6740 if (pqi_is_firmware_feature_supported(firmware_features,
6741 pqi_firmware_features[i].feature_bit)) {
6742 pqi_firmware_features[i].supported = true;
6743 num_features_supported++;
6745 pqi_firmware_feature_update(ctrl_info,
6746 &pqi_firmware_features[i]);
6750 if (num_features_supported == 0)
6753 for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) {
6754 if (!pqi_firmware_features[i].supported)
6756 pqi_request_firmware_feature(firmware_features,
6757 pqi_firmware_features[i].feature_bit);
6760 rc = pqi_enable_firmware_features(ctrl_info, firmware_features,
6761 firmware_features_iomem_addr);
6763 dev_err(&ctrl_info->pci_dev->dev,
6764 "failed to enable firmware features in PQI configuration table\n");
6765 for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) {
6766 if (!pqi_firmware_features[i].supported)
6768 pqi_firmware_feature_update(ctrl_info,
6769 &pqi_firmware_features[i]);
6774 ctrl_info->soft_reset_handshake_supported = false;
6775 for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) {
6776 if (!pqi_firmware_features[i].supported)
6778 if (pqi_is_firmware_feature_enabled(firmware_features,
6779 firmware_features_iomem_addr,
6780 pqi_firmware_features[i].feature_bit)) {
6781 pqi_firmware_features[i].enabled = true;
6782 if (pqi_firmware_features[i].feature_bit ==
6783 PQI_FIRMWARE_FEATURE_SOFT_RESET_HANDSHAKE)
6784 ctrl_info->soft_reset_handshake_supported =
6787 pqi_firmware_feature_update(ctrl_info,
6788 &pqi_firmware_features[i]);
6792 static void pqi_init_firmware_features(void)
6796 for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) {
6797 pqi_firmware_features[i].supported = false;
6798 pqi_firmware_features[i].enabled = false;
6802 static void pqi_process_firmware_features_section(
6803 struct pqi_config_table_section_info *section_info)
6805 mutex_lock(&pqi_firmware_features_mutex);
6806 pqi_init_firmware_features();
6807 pqi_process_firmware_features(section_info);
6808 mutex_unlock(&pqi_firmware_features_mutex);
6811 static int pqi_process_config_table(struct pqi_ctrl_info *ctrl_info)
6815 void __iomem *table_iomem_addr;
6816 struct pqi_config_table *config_table;
6817 struct pqi_config_table_section_header *section;
6818 struct pqi_config_table_section_info section_info;
6820 table_length = ctrl_info->config_table_length;
6821 if (table_length == 0)
6824 config_table = kmalloc(table_length, GFP_KERNEL);
6825 if (!config_table) {
6826 dev_err(&ctrl_info->pci_dev->dev,
6827 "failed to allocate memory for PQI configuration table\n");
6832 * Copy the config table contents from I/O memory space into the
6835 table_iomem_addr = ctrl_info->iomem_base +
6836 ctrl_info->config_table_offset;
6837 memcpy_fromio(config_table, table_iomem_addr, table_length);
6839 section_info.ctrl_info = ctrl_info;
6841 get_unaligned_le32(&config_table->first_section_offset);
6843 while (section_offset) {
6844 section = (void *)config_table + section_offset;
6846 section_info.section = section;
6847 section_info.section_offset = section_offset;
6848 section_info.section_iomem_addr =
6849 table_iomem_addr + section_offset;
6851 switch (get_unaligned_le16(§ion->section_id)) {
6852 case PQI_CONFIG_TABLE_SECTION_FIRMWARE_FEATURES:
6853 pqi_process_firmware_features_section(§ion_info);
6855 case PQI_CONFIG_TABLE_SECTION_HEARTBEAT:
6856 if (pqi_disable_heartbeat)
6857 dev_warn(&ctrl_info->pci_dev->dev,
6858 "heartbeat disabled by module parameter\n");
6860 ctrl_info->heartbeat_counter =
6864 struct pqi_config_table_heartbeat,
6867 case PQI_CONFIG_TABLE_SECTION_SOFT_RESET:
6868 ctrl_info->soft_reset_status =
6871 offsetof(struct pqi_config_table_soft_reset,
6877 get_unaligned_le16(§ion->next_section_offset);
6880 kfree(config_table);
6885 /* Switches the controller from PQI mode back into SIS mode. */
6887 static int pqi_revert_to_sis_mode(struct pqi_ctrl_info *ctrl_info)
6891 pqi_change_irq_mode(ctrl_info, IRQ_MODE_NONE);
6892 rc = pqi_reset(ctrl_info);
6895 rc = sis_reenable_sis_mode(ctrl_info);
6897 dev_err(&ctrl_info->pci_dev->dev,
6898 "re-enabling SIS mode failed with error %d\n", rc);
6901 pqi_save_ctrl_mode(ctrl_info, SIS_MODE);
6907 * If the controller isn't already in SIS mode, this function forces it into
6911 static int pqi_force_sis_mode(struct pqi_ctrl_info *ctrl_info)
6913 if (!sis_is_firmware_running(ctrl_info))
6916 if (pqi_get_ctrl_mode(ctrl_info) == SIS_MODE)
6919 if (sis_is_kernel_up(ctrl_info)) {
6920 pqi_save_ctrl_mode(ctrl_info, SIS_MODE);
6924 return pqi_revert_to_sis_mode(ctrl_info);
6927 static int pqi_ctrl_init(struct pqi_ctrl_info *ctrl_info)
6931 rc = pqi_force_sis_mode(ctrl_info);
6936 * Wait until the controller is ready to start accepting SIS
6939 rc = sis_wait_for_ctrl_ready(ctrl_info);
6944 * Get the controller properties. This allows us to determine
6945 * whether or not it supports PQI mode.
6947 rc = sis_get_ctrl_properties(ctrl_info);
6949 dev_err(&ctrl_info->pci_dev->dev,
6950 "error obtaining controller properties\n");
6954 rc = sis_get_pqi_capabilities(ctrl_info);
6956 dev_err(&ctrl_info->pci_dev->dev,
6957 "error obtaining controller capabilities\n");
6961 if (reset_devices) {
6962 if (ctrl_info->max_outstanding_requests >
6963 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP)
6964 ctrl_info->max_outstanding_requests =
6965 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP;
6967 if (ctrl_info->max_outstanding_requests >
6968 PQI_MAX_OUTSTANDING_REQUESTS)
6969 ctrl_info->max_outstanding_requests =
6970 PQI_MAX_OUTSTANDING_REQUESTS;
6973 pqi_calculate_io_resources(ctrl_info);
6975 rc = pqi_alloc_error_buffer(ctrl_info);
6977 dev_err(&ctrl_info->pci_dev->dev,
6978 "failed to allocate PQI error buffer\n");
6983 * If the function we are about to call succeeds, the
6984 * controller will transition from legacy SIS mode
6987 rc = sis_init_base_struct_addr(ctrl_info);
6989 dev_err(&ctrl_info->pci_dev->dev,
6990 "error initializing PQI mode\n");
6994 /* Wait for the controller to complete the SIS -> PQI transition. */
6995 rc = pqi_wait_for_pqi_mode_ready(ctrl_info);
6997 dev_err(&ctrl_info->pci_dev->dev,
6998 "transition to PQI mode failed\n");
7002 /* From here on, we are running in PQI mode. */
7003 ctrl_info->pqi_mode_enabled = true;
7004 pqi_save_ctrl_mode(ctrl_info, PQI_MODE);
7006 rc = pqi_alloc_admin_queues(ctrl_info);
7008 dev_err(&ctrl_info->pci_dev->dev,
7009 "failed to allocate admin queues\n");
7013 rc = pqi_create_admin_queues(ctrl_info);
7015 dev_err(&ctrl_info->pci_dev->dev,
7016 "error creating admin queues\n");
7020 rc = pqi_report_device_capability(ctrl_info);
7022 dev_err(&ctrl_info->pci_dev->dev,
7023 "obtaining device capability failed\n");
7027 rc = pqi_validate_device_capability(ctrl_info);
7031 pqi_calculate_queue_resources(ctrl_info);
7033 rc = pqi_enable_msix_interrupts(ctrl_info);
7037 if (ctrl_info->num_msix_vectors_enabled < ctrl_info->num_queue_groups) {
7038 ctrl_info->max_msix_vectors =
7039 ctrl_info->num_msix_vectors_enabled;
7040 pqi_calculate_queue_resources(ctrl_info);
7043 rc = pqi_alloc_io_resources(ctrl_info);
7047 rc = pqi_alloc_operational_queues(ctrl_info);
7049 dev_err(&ctrl_info->pci_dev->dev,
7050 "failed to allocate operational queues\n");
7054 pqi_init_operational_queues(ctrl_info);
7056 rc = pqi_request_irqs(ctrl_info);
7060 rc = pqi_create_queues(ctrl_info);
7064 pqi_change_irq_mode(ctrl_info, IRQ_MODE_MSIX);
7066 ctrl_info->controller_online = true;
7068 rc = pqi_process_config_table(ctrl_info);
7072 pqi_start_heartbeat_timer(ctrl_info);
7074 rc = pqi_enable_events(ctrl_info);
7076 dev_err(&ctrl_info->pci_dev->dev,
7077 "error enabling events\n");
7081 /* Register with the SCSI subsystem. */
7082 rc = pqi_register_scsi(ctrl_info);
7086 rc = pqi_get_ctrl_firmware_version(ctrl_info);
7088 dev_err(&ctrl_info->pci_dev->dev,
7089 "error obtaining firmware version\n");
7093 rc = pqi_set_diag_rescan(ctrl_info);
7095 dev_err(&ctrl_info->pci_dev->dev,
7096 "error enabling multi-lun rescan\n");
7100 rc = pqi_write_driver_version_to_host_wellness(ctrl_info);
7102 dev_err(&ctrl_info->pci_dev->dev,
7103 "error updating host wellness\n");
7107 pqi_schedule_update_time_worker(ctrl_info);
7109 pqi_scan_scsi_devices(ctrl_info);
7114 static void pqi_reinit_queues(struct pqi_ctrl_info *ctrl_info)
7117 struct pqi_admin_queues *admin_queues;
7118 struct pqi_event_queue *event_queue;
7120 admin_queues = &ctrl_info->admin_queues;
7121 admin_queues->iq_pi_copy = 0;
7122 admin_queues->oq_ci_copy = 0;
7123 writel(0, admin_queues->oq_pi);
7125 for (i = 0; i < ctrl_info->num_queue_groups; i++) {
7126 ctrl_info->queue_groups[i].iq_pi_copy[RAID_PATH] = 0;
7127 ctrl_info->queue_groups[i].iq_pi_copy[AIO_PATH] = 0;
7128 ctrl_info->queue_groups[i].oq_ci_copy = 0;
7130 writel(0, ctrl_info->queue_groups[i].iq_ci[RAID_PATH]);
7131 writel(0, ctrl_info->queue_groups[i].iq_ci[AIO_PATH]);
7132 writel(0, ctrl_info->queue_groups[i].oq_pi);
7135 event_queue = &ctrl_info->event_queue;
7136 writel(0, event_queue->oq_pi);
7137 event_queue->oq_ci_copy = 0;
7140 static int pqi_ctrl_init_resume(struct pqi_ctrl_info *ctrl_info)
7144 rc = pqi_force_sis_mode(ctrl_info);
7149 * Wait until the controller is ready to start accepting SIS
7152 rc = sis_wait_for_ctrl_ready_resume(ctrl_info);
7157 * Get the controller properties. This allows us to determine
7158 * whether or not it supports PQI mode.
7160 rc = sis_get_ctrl_properties(ctrl_info);
7162 dev_err(&ctrl_info->pci_dev->dev,
7163 "error obtaining controller properties\n");
7167 rc = sis_get_pqi_capabilities(ctrl_info);
7169 dev_err(&ctrl_info->pci_dev->dev,
7170 "error obtaining controller capabilities\n");
7175 * If the function we are about to call succeeds, the
7176 * controller will transition from legacy SIS mode
7179 rc = sis_init_base_struct_addr(ctrl_info);
7181 dev_err(&ctrl_info->pci_dev->dev,
7182 "error initializing PQI mode\n");
7186 /* Wait for the controller to complete the SIS -> PQI transition. */
7187 rc = pqi_wait_for_pqi_mode_ready(ctrl_info);
7189 dev_err(&ctrl_info->pci_dev->dev,
7190 "transition to PQI mode failed\n");
7194 /* From here on, we are running in PQI mode. */
7195 ctrl_info->pqi_mode_enabled = true;
7196 pqi_save_ctrl_mode(ctrl_info, PQI_MODE);
7198 pqi_reinit_queues(ctrl_info);
7200 rc = pqi_create_admin_queues(ctrl_info);
7202 dev_err(&ctrl_info->pci_dev->dev,
7203 "error creating admin queues\n");
7207 rc = pqi_create_queues(ctrl_info);
7211 pqi_change_irq_mode(ctrl_info, IRQ_MODE_MSIX);
7213 ctrl_info->controller_online = true;
7214 pqi_ctrl_unblock_requests(ctrl_info);
7216 rc = pqi_process_config_table(ctrl_info);
7220 pqi_start_heartbeat_timer(ctrl_info);
7222 rc = pqi_enable_events(ctrl_info);
7224 dev_err(&ctrl_info->pci_dev->dev,
7225 "error enabling events\n");
7229 rc = pqi_get_ctrl_firmware_version(ctrl_info);
7231 dev_err(&ctrl_info->pci_dev->dev,
7232 "error obtaining firmware version\n");
7236 rc = pqi_set_diag_rescan(ctrl_info);
7238 dev_err(&ctrl_info->pci_dev->dev,
7239 "error enabling multi-lun rescan\n");
7243 rc = pqi_write_driver_version_to_host_wellness(ctrl_info);
7245 dev_err(&ctrl_info->pci_dev->dev,
7246 "error updating host wellness\n");
7250 pqi_schedule_update_time_worker(ctrl_info);
7252 pqi_scan_scsi_devices(ctrl_info);
7257 static inline int pqi_set_pcie_completion_timeout(struct pci_dev *pci_dev,
7260 return pcie_capability_clear_and_set_word(pci_dev, PCI_EXP_DEVCTL2,
7261 PCI_EXP_DEVCTL2_COMP_TIMEOUT, timeout);
7264 static int pqi_pci_init(struct pqi_ctrl_info *ctrl_info)
7269 rc = pci_enable_device(ctrl_info->pci_dev);
7271 dev_err(&ctrl_info->pci_dev->dev,
7272 "failed to enable PCI device\n");
7276 if (sizeof(dma_addr_t) > 4)
7277 mask = DMA_BIT_MASK(64);
7279 mask = DMA_BIT_MASK(32);
7281 rc = dma_set_mask(&ctrl_info->pci_dev->dev, mask);
7283 dev_err(&ctrl_info->pci_dev->dev, "failed to set DMA mask\n");
7284 goto disable_device;
7287 rc = pci_request_regions(ctrl_info->pci_dev, DRIVER_NAME_SHORT);
7289 dev_err(&ctrl_info->pci_dev->dev,
7290 "failed to obtain PCI resources\n");
7291 goto disable_device;
7294 ctrl_info->iomem_base = ioremap_nocache(pci_resource_start(
7295 ctrl_info->pci_dev, 0),
7296 sizeof(struct pqi_ctrl_registers));
7297 if (!ctrl_info->iomem_base) {
7298 dev_err(&ctrl_info->pci_dev->dev,
7299 "failed to map memory for controller registers\n");
7301 goto release_regions;
7304 #define PCI_EXP_COMP_TIMEOUT_65_TO_210_MS 0x6
7306 /* Increase the PCIe completion timeout. */
7307 rc = pqi_set_pcie_completion_timeout(ctrl_info->pci_dev,
7308 PCI_EXP_COMP_TIMEOUT_65_TO_210_MS);
7310 dev_err(&ctrl_info->pci_dev->dev,
7311 "failed to set PCIe completion timeout\n");
7312 goto release_regions;
7315 /* Enable bus mastering. */
7316 pci_set_master(ctrl_info->pci_dev);
7318 ctrl_info->registers = ctrl_info->iomem_base;
7319 ctrl_info->pqi_registers = &ctrl_info->registers->pqi_registers;
7321 pci_set_drvdata(ctrl_info->pci_dev, ctrl_info);
7326 pci_release_regions(ctrl_info->pci_dev);
7328 pci_disable_device(ctrl_info->pci_dev);
7333 static void pqi_cleanup_pci_init(struct pqi_ctrl_info *ctrl_info)
7335 iounmap(ctrl_info->iomem_base);
7336 pci_release_regions(ctrl_info->pci_dev);
7337 if (pci_is_enabled(ctrl_info->pci_dev))
7338 pci_disable_device(ctrl_info->pci_dev);
7339 pci_set_drvdata(ctrl_info->pci_dev, NULL);
7342 static struct pqi_ctrl_info *pqi_alloc_ctrl_info(int numa_node)
7344 struct pqi_ctrl_info *ctrl_info;
7346 ctrl_info = kzalloc_node(sizeof(struct pqi_ctrl_info),
7347 GFP_KERNEL, numa_node);
7351 mutex_init(&ctrl_info->scan_mutex);
7352 mutex_init(&ctrl_info->lun_reset_mutex);
7353 mutex_init(&ctrl_info->ofa_mutex);
7355 INIT_LIST_HEAD(&ctrl_info->scsi_device_list);
7356 spin_lock_init(&ctrl_info->scsi_device_list_lock);
7358 INIT_WORK(&ctrl_info->event_work, pqi_event_worker);
7359 atomic_set(&ctrl_info->num_interrupts, 0);
7361 INIT_DELAYED_WORK(&ctrl_info->rescan_work, pqi_rescan_worker);
7362 INIT_DELAYED_WORK(&ctrl_info->update_time_work, pqi_update_time_worker);
7364 timer_setup(&ctrl_info->heartbeat_timer, pqi_heartbeat_timer_handler, 0);
7365 INIT_WORK(&ctrl_info->ctrl_offline_work, pqi_ctrl_offline_worker);
7367 sema_init(&ctrl_info->sync_request_sem,
7368 PQI_RESERVED_IO_SLOTS_SYNCHRONOUS_REQUESTS);
7369 init_waitqueue_head(&ctrl_info->block_requests_wait);
7371 INIT_LIST_HEAD(&ctrl_info->raid_bypass_retry_list);
7372 spin_lock_init(&ctrl_info->raid_bypass_retry_list_lock);
7373 INIT_WORK(&ctrl_info->raid_bypass_retry_work,
7374 pqi_raid_bypass_retry_worker);
7376 ctrl_info->ctrl_id = atomic_inc_return(&pqi_controller_count) - 1;
7377 ctrl_info->irq_mode = IRQ_MODE_NONE;
7378 ctrl_info->max_msix_vectors = PQI_MAX_MSIX_VECTORS;
7383 static inline void pqi_free_ctrl_info(struct pqi_ctrl_info *ctrl_info)
7388 static void pqi_free_interrupts(struct pqi_ctrl_info *ctrl_info)
7390 pqi_free_irqs(ctrl_info);
7391 pqi_disable_msix_interrupts(ctrl_info);
7394 static void pqi_free_ctrl_resources(struct pqi_ctrl_info *ctrl_info)
7396 pqi_stop_heartbeat_timer(ctrl_info);
7397 pqi_free_interrupts(ctrl_info);
7398 if (ctrl_info->queue_memory_base)
7399 dma_free_coherent(&ctrl_info->pci_dev->dev,
7400 ctrl_info->queue_memory_length,
7401 ctrl_info->queue_memory_base,
7402 ctrl_info->queue_memory_base_dma_handle);
7403 if (ctrl_info->admin_queue_memory_base)
7404 dma_free_coherent(&ctrl_info->pci_dev->dev,
7405 ctrl_info->admin_queue_memory_length,
7406 ctrl_info->admin_queue_memory_base,
7407 ctrl_info->admin_queue_memory_base_dma_handle);
7408 pqi_free_all_io_requests(ctrl_info);
7409 if (ctrl_info->error_buffer)
7410 dma_free_coherent(&ctrl_info->pci_dev->dev,
7411 ctrl_info->error_buffer_length,
7412 ctrl_info->error_buffer,
7413 ctrl_info->error_buffer_dma_handle);
7414 if (ctrl_info->iomem_base)
7415 pqi_cleanup_pci_init(ctrl_info);
7416 pqi_free_ctrl_info(ctrl_info);
7419 static void pqi_remove_ctrl(struct pqi_ctrl_info *ctrl_info)
7421 pqi_cancel_rescan_worker(ctrl_info);
7422 pqi_cancel_update_time_worker(ctrl_info);
7423 pqi_remove_all_scsi_devices(ctrl_info);
7424 pqi_unregister_scsi(ctrl_info);
7425 if (ctrl_info->pqi_mode_enabled)
7426 pqi_revert_to_sis_mode(ctrl_info);
7427 pqi_free_ctrl_resources(ctrl_info);
7430 static void pqi_ofa_ctrl_quiesce(struct pqi_ctrl_info *ctrl_info)
7432 pqi_cancel_update_time_worker(ctrl_info);
7433 pqi_cancel_rescan_worker(ctrl_info);
7434 pqi_wait_until_lun_reset_finished(ctrl_info);
7435 pqi_wait_until_scan_finished(ctrl_info);
7436 pqi_ctrl_ofa_start(ctrl_info);
7437 pqi_ctrl_block_requests(ctrl_info);
7438 pqi_ctrl_wait_until_quiesced(ctrl_info);
7439 pqi_ctrl_wait_for_pending_io(ctrl_info, PQI_PENDING_IO_TIMEOUT_SECS);
7440 pqi_fail_io_queued_for_all_devices(ctrl_info);
7441 pqi_wait_until_inbound_queues_empty(ctrl_info);
7442 pqi_stop_heartbeat_timer(ctrl_info);
7443 ctrl_info->pqi_mode_enabled = false;
7444 pqi_save_ctrl_mode(ctrl_info, SIS_MODE);
7447 static void pqi_ofa_ctrl_unquiesce(struct pqi_ctrl_info *ctrl_info)
7449 pqi_ofa_free_host_buffer(ctrl_info);
7450 ctrl_info->pqi_mode_enabled = true;
7451 pqi_save_ctrl_mode(ctrl_info, PQI_MODE);
7452 ctrl_info->controller_online = true;
7453 pqi_ctrl_unblock_requests(ctrl_info);
7454 pqi_start_heartbeat_timer(ctrl_info);
7455 pqi_schedule_update_time_worker(ctrl_info);
7456 pqi_clear_soft_reset_status(ctrl_info,
7457 PQI_SOFT_RESET_ABORT);
7458 pqi_scan_scsi_devices(ctrl_info);
7461 static int pqi_ofa_alloc_mem(struct pqi_ctrl_info *ctrl_info,
7462 u32 total_size, u32 chunk_size)
7467 struct pqi_sg_descriptor *mem_descriptor = NULL;
7469 struct pqi_ofa_memory *ofap;
7471 dev = &ctrl_info->pci_dev->dev;
7473 sg_count = (total_size + chunk_size - 1);
7474 sg_count /= chunk_size;
7476 ofap = ctrl_info->pqi_ofa_mem_virt_addr;
7478 if (sg_count*chunk_size < total_size)
7481 ctrl_info->pqi_ofa_chunk_virt_addr =
7482 kcalloc(sg_count, sizeof(void *), GFP_KERNEL);
7483 if (!ctrl_info->pqi_ofa_chunk_virt_addr)
7486 for (size = 0, i = 0; size < total_size; size += chunk_size, i++) {
7487 dma_addr_t dma_handle;
7489 ctrl_info->pqi_ofa_chunk_virt_addr[i] =
7490 dma_zalloc_coherent(dev, chunk_size, &dma_handle,
7493 if (!ctrl_info->pqi_ofa_chunk_virt_addr[i])
7496 mem_descriptor = &ofap->sg_descriptor[i];
7497 put_unaligned_le64 ((u64) dma_handle, &mem_descriptor->address);
7498 put_unaligned_le32 (chunk_size, &mem_descriptor->length);
7501 if (!size || size < total_size)
7502 goto out_free_chunks;
7504 put_unaligned_le32(CISS_SG_LAST, &mem_descriptor->flags);
7505 put_unaligned_le16(sg_count, &ofap->num_memory_descriptors);
7506 put_unaligned_le32(size, &ofap->bytes_allocated);
7512 mem_descriptor = &ofap->sg_descriptor[i];
7513 dma_free_coherent(dev, chunk_size,
7514 ctrl_info->pqi_ofa_chunk_virt_addr[i],
7515 get_unaligned_le64(&mem_descriptor->address));
7517 kfree(ctrl_info->pqi_ofa_chunk_virt_addr);
7520 put_unaligned_le32 (0, &ofap->bytes_allocated);
7524 static int pqi_ofa_alloc_host_buffer(struct pqi_ctrl_info *ctrl_info)
7530 total_size = le32_to_cpu(
7531 ctrl_info->pqi_ofa_mem_virt_addr->bytes_allocated);
7532 min_chunk_size = total_size / PQI_OFA_MAX_SG_DESCRIPTORS;
7534 for (chunk_sz = total_size; chunk_sz >= min_chunk_size; chunk_sz /= 2)
7535 if (!pqi_ofa_alloc_mem(ctrl_info, total_size, chunk_sz))
7541 static void pqi_ofa_setup_host_buffer(struct pqi_ctrl_info *ctrl_info,
7542 u32 bytes_requested)
7544 struct pqi_ofa_memory *pqi_ofa_memory;
7547 dev = &ctrl_info->pci_dev->dev;
7548 pqi_ofa_memory = dma_zalloc_coherent(dev,
7549 PQI_OFA_MEMORY_DESCRIPTOR_LENGTH,
7550 &ctrl_info->pqi_ofa_mem_dma_handle,
7553 if (!pqi_ofa_memory)
7556 put_unaligned_le16(PQI_OFA_VERSION, &pqi_ofa_memory->version);
7557 memcpy(&pqi_ofa_memory->signature, PQI_OFA_SIGNATURE,
7558 sizeof(pqi_ofa_memory->signature));
7559 pqi_ofa_memory->bytes_allocated = cpu_to_le32(bytes_requested);
7561 ctrl_info->pqi_ofa_mem_virt_addr = pqi_ofa_memory;
7563 if (pqi_ofa_alloc_host_buffer(ctrl_info) < 0) {
7564 dev_err(dev, "Failed to allocate host buffer of size = %u",
7569 static void pqi_ofa_free_host_buffer(struct pqi_ctrl_info *ctrl_info)
7572 struct pqi_sg_descriptor *mem_descriptor;
7573 struct pqi_ofa_memory *ofap;
7575 ofap = ctrl_info->pqi_ofa_mem_virt_addr;
7580 if (!ofap->bytes_allocated)
7583 mem_descriptor = ofap->sg_descriptor;
7585 for (i = 0; i < get_unaligned_le16(&ofap->num_memory_descriptors);
7587 dma_free_coherent(&ctrl_info->pci_dev->dev,
7588 get_unaligned_le32(&mem_descriptor[i].length),
7589 ctrl_info->pqi_ofa_chunk_virt_addr[i],
7590 get_unaligned_le64(&mem_descriptor[i].address));
7592 kfree(ctrl_info->pqi_ofa_chunk_virt_addr);
7595 dma_free_coherent(&ctrl_info->pci_dev->dev,
7596 PQI_OFA_MEMORY_DESCRIPTOR_LENGTH, ofap,
7597 ctrl_info->pqi_ofa_mem_dma_handle);
7598 ctrl_info->pqi_ofa_mem_virt_addr = NULL;
7601 static int pqi_ofa_host_memory_update(struct pqi_ctrl_info *ctrl_info)
7603 struct pqi_vendor_general_request request;
7605 struct pqi_ofa_memory *ofap;
7607 memset(&request, 0, sizeof(request));
7609 ofap = ctrl_info->pqi_ofa_mem_virt_addr;
7611 request.header.iu_type = PQI_REQUEST_IU_VENDOR_GENERAL;
7612 put_unaligned_le16(sizeof(request) - PQI_REQUEST_HEADER_LENGTH,
7613 &request.header.iu_length);
7614 put_unaligned_le16(PQI_VENDOR_GENERAL_HOST_MEMORY_UPDATE,
7615 &request.function_code);
7618 size = offsetof(struct pqi_ofa_memory, sg_descriptor) +
7619 get_unaligned_le16(&ofap->num_memory_descriptors) *
7620 sizeof(struct pqi_sg_descriptor);
7622 put_unaligned_le64((u64)ctrl_info->pqi_ofa_mem_dma_handle,
7623 &request.data.ofa_memory_allocation.buffer_address);
7624 put_unaligned_le32(size,
7625 &request.data.ofa_memory_allocation.buffer_length);
7629 return pqi_submit_raid_request_synchronous(ctrl_info, &request.header,
7630 0, NULL, NO_TIMEOUT);
7633 #define PQI_POST_RESET_DELAY_B4_MSGU_READY 5000
7635 static int pqi_ofa_ctrl_restart(struct pqi_ctrl_info *ctrl_info)
7637 msleep(PQI_POST_RESET_DELAY_B4_MSGU_READY);
7638 return pqi_ctrl_init_resume(ctrl_info);
7641 static void pqi_perform_lockup_action(void)
7643 switch (pqi_lockup_action) {
7645 panic("FATAL: Smart Family Controller lockup detected");
7648 emergency_restart();
7656 static struct pqi_raid_error_info pqi_ctrl_offline_raid_error_info = {
7657 .data_out_result = PQI_DATA_IN_OUT_HARDWARE_ERROR,
7658 .status = SAM_STAT_CHECK_CONDITION,
7661 static void pqi_fail_all_outstanding_requests(struct pqi_ctrl_info *ctrl_info)
7664 struct pqi_io_request *io_request;
7665 struct scsi_cmnd *scmd;
7667 for (i = 0; i < ctrl_info->max_io_slots; i++) {
7668 io_request = &ctrl_info->io_request_pool[i];
7669 if (atomic_read(&io_request->refcount) == 0)
7672 scmd = io_request->scmd;
7674 set_host_byte(scmd, DID_NO_CONNECT);
7676 io_request->status = -ENXIO;
7677 io_request->error_info =
7678 &pqi_ctrl_offline_raid_error_info;
7681 io_request->io_complete_callback(io_request,
7682 io_request->context);
7686 static void pqi_take_ctrl_offline_deferred(struct pqi_ctrl_info *ctrl_info)
7688 pqi_perform_lockup_action();
7689 pqi_stop_heartbeat_timer(ctrl_info);
7690 pqi_free_interrupts(ctrl_info);
7691 pqi_cancel_rescan_worker(ctrl_info);
7692 pqi_cancel_update_time_worker(ctrl_info);
7693 pqi_ctrl_wait_until_quiesced(ctrl_info);
7694 pqi_fail_all_outstanding_requests(ctrl_info);
7695 pqi_clear_all_queued_raid_bypass_retries(ctrl_info);
7696 pqi_ctrl_unblock_requests(ctrl_info);
7699 static void pqi_ctrl_offline_worker(struct work_struct *work)
7701 struct pqi_ctrl_info *ctrl_info;
7703 ctrl_info = container_of(work, struct pqi_ctrl_info, ctrl_offline_work);
7704 pqi_take_ctrl_offline_deferred(ctrl_info);
7707 static void pqi_take_ctrl_offline(struct pqi_ctrl_info *ctrl_info)
7709 if (!ctrl_info->controller_online)
7712 ctrl_info->controller_online = false;
7713 ctrl_info->pqi_mode_enabled = false;
7714 pqi_ctrl_block_requests(ctrl_info);
7715 if (!pqi_disable_ctrl_shutdown)
7716 sis_shutdown_ctrl(ctrl_info);
7717 pci_disable_device(ctrl_info->pci_dev);
7718 dev_err(&ctrl_info->pci_dev->dev, "controller offline\n");
7719 schedule_work(&ctrl_info->ctrl_offline_work);
7722 static void pqi_print_ctrl_info(struct pci_dev *pci_dev,
7723 const struct pci_device_id *id)
7725 char *ctrl_description;
7727 if (id->driver_data)
7728 ctrl_description = (char *)id->driver_data;
7730 ctrl_description = "Microsemi Smart Family Controller";
7732 dev_info(&pci_dev->dev, "%s found\n", ctrl_description);
7735 static int pqi_pci_probe(struct pci_dev *pci_dev,
7736 const struct pci_device_id *id)
7740 struct pqi_ctrl_info *ctrl_info;
7742 pqi_print_ctrl_info(pci_dev, id);
7744 if (pqi_disable_device_id_wildcards &&
7745 id->subvendor == PCI_ANY_ID &&
7746 id->subdevice == PCI_ANY_ID) {
7747 dev_warn(&pci_dev->dev,
7748 "controller not probed because device ID wildcards are disabled\n");
7752 if (id->subvendor == PCI_ANY_ID || id->subdevice == PCI_ANY_ID)
7753 dev_warn(&pci_dev->dev,
7754 "controller device ID matched using wildcards\n");
7756 node = dev_to_node(&pci_dev->dev);
7757 if (node == NUMA_NO_NODE) {
7758 cp_node = cpu_to_node(0);
7759 if (cp_node == NUMA_NO_NODE)
7761 set_dev_node(&pci_dev->dev, cp_node);
7764 ctrl_info = pqi_alloc_ctrl_info(node);
7766 dev_err(&pci_dev->dev,
7767 "failed to allocate controller info block\n");
7771 ctrl_info->pci_dev = pci_dev;
7773 rc = pqi_pci_init(ctrl_info);
7777 rc = pqi_ctrl_init(ctrl_info);
7784 pqi_remove_ctrl(ctrl_info);
7789 static void pqi_pci_remove(struct pci_dev *pci_dev)
7791 struct pqi_ctrl_info *ctrl_info;
7793 ctrl_info = pci_get_drvdata(pci_dev);
7797 ctrl_info->in_shutdown = true;
7799 pqi_remove_ctrl(ctrl_info);
7802 static void pqi_shutdown(struct pci_dev *pci_dev)
7805 struct pqi_ctrl_info *ctrl_info;
7807 ctrl_info = pci_get_drvdata(pci_dev);
7812 * Write all data in the controller's battery-backed cache to
7815 rc = pqi_flush_cache(ctrl_info, SHUTDOWN);
7816 pqi_free_interrupts(ctrl_info);
7817 pqi_reset(ctrl_info);
7822 dev_warn(&pci_dev->dev,
7823 "unable to flush controller cache\n");
7826 static void pqi_process_lockup_action_param(void)
7830 if (!pqi_lockup_action_param)
7833 for (i = 0; i < ARRAY_SIZE(pqi_lockup_actions); i++) {
7834 if (strcmp(pqi_lockup_action_param,
7835 pqi_lockup_actions[i].name) == 0) {
7836 pqi_lockup_action = pqi_lockup_actions[i].action;
7841 pr_warn("%s: invalid lockup action setting \"%s\" - supported settings: none, reboot, panic\n",
7842 DRIVER_NAME_SHORT, pqi_lockup_action_param);
7845 static void pqi_process_module_params(void)
7847 pqi_process_lockup_action_param();
7850 static __maybe_unused int pqi_suspend(struct pci_dev *pci_dev, pm_message_t state)
7852 struct pqi_ctrl_info *ctrl_info;
7854 ctrl_info = pci_get_drvdata(pci_dev);
7856 pqi_disable_events(ctrl_info);
7857 pqi_cancel_update_time_worker(ctrl_info);
7858 pqi_cancel_rescan_worker(ctrl_info);
7859 pqi_wait_until_scan_finished(ctrl_info);
7860 pqi_wait_until_lun_reset_finished(ctrl_info);
7861 pqi_wait_until_ofa_finished(ctrl_info);
7862 pqi_flush_cache(ctrl_info, SUSPEND);
7863 pqi_ctrl_block_requests(ctrl_info);
7864 pqi_ctrl_wait_until_quiesced(ctrl_info);
7865 pqi_wait_until_inbound_queues_empty(ctrl_info);
7866 pqi_ctrl_wait_for_pending_io(ctrl_info, NO_TIMEOUT);
7867 pqi_stop_heartbeat_timer(ctrl_info);
7869 if (state.event == PM_EVENT_FREEZE)
7872 pci_save_state(pci_dev);
7873 pci_set_power_state(pci_dev, pci_choose_state(pci_dev, state));
7875 ctrl_info->controller_online = false;
7876 ctrl_info->pqi_mode_enabled = false;
7881 static __maybe_unused int pqi_resume(struct pci_dev *pci_dev)
7884 struct pqi_ctrl_info *ctrl_info;
7886 ctrl_info = pci_get_drvdata(pci_dev);
7888 if (pci_dev->current_state != PCI_D0) {
7889 ctrl_info->max_hw_queue_index = 0;
7890 pqi_free_interrupts(ctrl_info);
7891 pqi_change_irq_mode(ctrl_info, IRQ_MODE_INTX);
7892 rc = request_irq(pci_irq_vector(pci_dev, 0), pqi_irq_handler,
7893 IRQF_SHARED, DRIVER_NAME_SHORT,
7894 &ctrl_info->queue_groups[0]);
7896 dev_err(&ctrl_info->pci_dev->dev,
7897 "irq %u init failed with error %d\n",
7901 pqi_start_heartbeat_timer(ctrl_info);
7902 pqi_ctrl_unblock_requests(ctrl_info);
7906 pci_set_power_state(pci_dev, PCI_D0);
7907 pci_restore_state(pci_dev);
7909 return pqi_ctrl_init_resume(ctrl_info);
7912 /* Define the PCI IDs for the controllers that we support. */
7913 static const struct pci_device_id pqi_pci_id_table[] = {
7915 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7919 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7923 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7927 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7931 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7935 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7939 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7943 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7947 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7951 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7955 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7959 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7963 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7967 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7971 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7975 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7979 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7983 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7987 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7991 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7995 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
7999 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8003 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8007 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8011 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8015 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8019 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8020 PCI_VENDOR_ID_ADAPTEC2, 0x0110)
8023 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8024 PCI_VENDOR_ID_ADAPTEC2, 0x0608)
8027 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8028 PCI_VENDOR_ID_ADAPTEC2, 0x0800)
8031 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8032 PCI_VENDOR_ID_ADAPTEC2, 0x0801)
8035 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8036 PCI_VENDOR_ID_ADAPTEC2, 0x0802)
8039 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8040 PCI_VENDOR_ID_ADAPTEC2, 0x0803)
8043 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8044 PCI_VENDOR_ID_ADAPTEC2, 0x0804)
8047 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8048 PCI_VENDOR_ID_ADAPTEC2, 0x0805)
8051 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8052 PCI_VENDOR_ID_ADAPTEC2, 0x0806)
8055 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8056 PCI_VENDOR_ID_ADAPTEC2, 0x0807)
8059 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8060 PCI_VENDOR_ID_ADAPTEC2, 0x0900)
8063 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8064 PCI_VENDOR_ID_ADAPTEC2, 0x0901)
8067 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8068 PCI_VENDOR_ID_ADAPTEC2, 0x0902)
8071 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8072 PCI_VENDOR_ID_ADAPTEC2, 0x0903)
8075 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8076 PCI_VENDOR_ID_ADAPTEC2, 0x0904)
8079 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8080 PCI_VENDOR_ID_ADAPTEC2, 0x0905)
8083 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8084 PCI_VENDOR_ID_ADAPTEC2, 0x0906)
8087 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8088 PCI_VENDOR_ID_ADAPTEC2, 0x0907)
8091 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8092 PCI_VENDOR_ID_ADAPTEC2, 0x0908)
8095 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8096 PCI_VENDOR_ID_ADAPTEC2, 0x090a)
8099 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8100 PCI_VENDOR_ID_ADAPTEC2, 0x1200)
8103 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8104 PCI_VENDOR_ID_ADAPTEC2, 0x1201)
8107 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8108 PCI_VENDOR_ID_ADAPTEC2, 0x1202)
8111 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8112 PCI_VENDOR_ID_ADAPTEC2, 0x1280)
8115 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8116 PCI_VENDOR_ID_ADAPTEC2, 0x1281)
8119 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8120 PCI_VENDOR_ID_ADAPTEC2, 0x1282)
8123 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8124 PCI_VENDOR_ID_ADAPTEC2, 0x1300)
8127 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8128 PCI_VENDOR_ID_ADAPTEC2, 0x1301)
8131 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8132 PCI_VENDOR_ID_ADAPTEC2, 0x1302)
8135 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8136 PCI_VENDOR_ID_ADAPTEC2, 0x1303)
8139 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8140 PCI_VENDOR_ID_ADAPTEC2, 0x1380)
8143 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8144 PCI_VENDOR_ID_ADVANTECH, 0x8312)
8147 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8148 PCI_VENDOR_ID_DELL, 0x1fe0)
8151 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8152 PCI_VENDOR_ID_HP, 0x0600)
8155 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8156 PCI_VENDOR_ID_HP, 0x0601)
8159 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8160 PCI_VENDOR_ID_HP, 0x0602)
8163 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8164 PCI_VENDOR_ID_HP, 0x0603)
8167 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8168 PCI_VENDOR_ID_HP, 0x0609)
8171 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8172 PCI_VENDOR_ID_HP, 0x0650)
8175 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8176 PCI_VENDOR_ID_HP, 0x0651)
8179 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8180 PCI_VENDOR_ID_HP, 0x0652)
8183 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8184 PCI_VENDOR_ID_HP, 0x0653)
8187 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8188 PCI_VENDOR_ID_HP, 0x0654)
8191 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8192 PCI_VENDOR_ID_HP, 0x0655)
8195 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8196 PCI_VENDOR_ID_HP, 0x0700)
8199 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8200 PCI_VENDOR_ID_HP, 0x0701)
8203 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8204 PCI_VENDOR_ID_HP, 0x1001)
8207 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8208 PCI_VENDOR_ID_HP, 0x1100)
8211 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8212 PCI_VENDOR_ID_HP, 0x1101)
8215 PCI_DEVICE_SUB(PCI_VENDOR_ID_ADAPTEC2, 0x028f,
8216 PCI_ANY_ID, PCI_ANY_ID)
8221 MODULE_DEVICE_TABLE(pci, pqi_pci_id_table);
8223 static struct pci_driver pqi_pci_driver = {
8224 .name = DRIVER_NAME_SHORT,
8225 .id_table = pqi_pci_id_table,
8226 .probe = pqi_pci_probe,
8227 .remove = pqi_pci_remove,
8228 .shutdown = pqi_shutdown,
8229 #if defined(CONFIG_PM)
8230 .suspend = pqi_suspend,
8231 .resume = pqi_resume,
8235 static int __init pqi_init(void)
8239 pr_info(DRIVER_NAME "\n");
8241 pqi_sas_transport_template =
8242 sas_attach_transport(&pqi_sas_transport_functions);
8243 if (!pqi_sas_transport_template)
8246 pqi_process_module_params();
8248 rc = pci_register_driver(&pqi_pci_driver);
8250 sas_release_transport(pqi_sas_transport_template);
8255 static void __exit pqi_cleanup(void)
8257 pci_unregister_driver(&pqi_pci_driver);
8258 sas_release_transport(pqi_sas_transport_template);
8261 module_init(pqi_init);
8262 module_exit(pqi_cleanup);
8264 static void __attribute__((unused)) verify_structures(void)
8266 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
8267 sis_host_to_ctrl_doorbell) != 0x20);
8268 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
8269 sis_interrupt_mask) != 0x34);
8270 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
8271 sis_ctrl_to_host_doorbell) != 0x9c);
8272 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
8273 sis_ctrl_to_host_doorbell_clear) != 0xa0);
8274 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
8275 sis_driver_scratch) != 0xb0);
8276 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
8277 sis_firmware_status) != 0xbc);
8278 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
8279 sis_mailbox) != 0x1000);
8280 BUILD_BUG_ON(offsetof(struct pqi_ctrl_registers,
8281 pqi_registers) != 0x4000);
8283 BUILD_BUG_ON(offsetof(struct pqi_iu_header,
8285 BUILD_BUG_ON(offsetof(struct pqi_iu_header,
8287 BUILD_BUG_ON(offsetof(struct pqi_iu_header,
8288 response_queue_id) != 0x4);
8289 BUILD_BUG_ON(offsetof(struct pqi_iu_header,
8291 BUILD_BUG_ON(sizeof(struct pqi_iu_header) != 0x8);
8293 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
8295 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
8296 service_response) != 0x1);
8297 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
8298 data_present) != 0x2);
8299 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
8301 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
8302 residual_count) != 0x4);
8303 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
8304 data_length) != 0x8);
8305 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
8307 BUILD_BUG_ON(offsetof(struct pqi_aio_error_info,
8309 BUILD_BUG_ON(sizeof(struct pqi_aio_error_info) != 0x10c);
8311 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
8312 data_in_result) != 0x0);
8313 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
8314 data_out_result) != 0x1);
8315 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
8317 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
8319 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
8320 status_qualifier) != 0x6);
8321 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
8322 sense_data_length) != 0x8);
8323 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
8324 response_data_length) != 0xa);
8325 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
8326 data_in_transferred) != 0xc);
8327 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
8328 data_out_transferred) != 0x10);
8329 BUILD_BUG_ON(offsetof(struct pqi_raid_error_info,
8331 BUILD_BUG_ON(sizeof(struct pqi_raid_error_info) != 0x114);
8333 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8335 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8336 function_and_status_code) != 0x8);
8337 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8338 max_admin_iq_elements) != 0x10);
8339 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8340 max_admin_oq_elements) != 0x11);
8341 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8342 admin_iq_element_length) != 0x12);
8343 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8344 admin_oq_element_length) != 0x13);
8345 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8346 max_reset_timeout) != 0x14);
8347 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8348 legacy_intx_status) != 0x18);
8349 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8350 legacy_intx_mask_set) != 0x1c);
8351 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8352 legacy_intx_mask_clear) != 0x20);
8353 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8354 device_status) != 0x40);
8355 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8356 admin_iq_pi_offset) != 0x48);
8357 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8358 admin_oq_ci_offset) != 0x50);
8359 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8360 admin_iq_element_array_addr) != 0x58);
8361 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8362 admin_oq_element_array_addr) != 0x60);
8363 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8364 admin_iq_ci_addr) != 0x68);
8365 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8366 admin_oq_pi_addr) != 0x70);
8367 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8368 admin_iq_num_elements) != 0x78);
8369 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8370 admin_oq_num_elements) != 0x79);
8371 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8372 admin_queue_int_msg_num) != 0x7a);
8373 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8374 device_error) != 0x80);
8375 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8376 error_details) != 0x88);
8377 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8378 device_reset) != 0x90);
8379 BUILD_BUG_ON(offsetof(struct pqi_device_registers,
8380 power_action) != 0x94);
8381 BUILD_BUG_ON(sizeof(struct pqi_device_registers) != 0x100);
8383 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8384 header.iu_type) != 0);
8385 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8386 header.iu_length) != 2);
8387 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8388 header.work_area) != 6);
8389 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8391 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8392 function_code) != 10);
8393 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8394 data.report_device_capability.buffer_length) != 44);
8395 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8396 data.report_device_capability.sg_descriptor) != 48);
8397 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8398 data.create_operational_iq.queue_id) != 12);
8399 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8400 data.create_operational_iq.element_array_addr) != 16);
8401 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8402 data.create_operational_iq.ci_addr) != 24);
8403 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8404 data.create_operational_iq.num_elements) != 32);
8405 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8406 data.create_operational_iq.element_length) != 34);
8407 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8408 data.create_operational_iq.queue_protocol) != 36);
8409 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8410 data.create_operational_oq.queue_id) != 12);
8411 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8412 data.create_operational_oq.element_array_addr) != 16);
8413 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8414 data.create_operational_oq.pi_addr) != 24);
8415 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8416 data.create_operational_oq.num_elements) != 32);
8417 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8418 data.create_operational_oq.element_length) != 34);
8419 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8420 data.create_operational_oq.queue_protocol) != 36);
8421 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8422 data.create_operational_oq.int_msg_num) != 40);
8423 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8424 data.create_operational_oq.coalescing_count) != 42);
8425 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8426 data.create_operational_oq.min_coalescing_time) != 44);
8427 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8428 data.create_operational_oq.max_coalescing_time) != 48);
8429 BUILD_BUG_ON(offsetof(struct pqi_general_admin_request,
8430 data.delete_operational_queue.queue_id) != 12);
8431 BUILD_BUG_ON(sizeof(struct pqi_general_admin_request) != 64);
8432 BUILD_BUG_ON(FIELD_SIZEOF(struct pqi_general_admin_request,
8433 data.create_operational_iq) != 64 - 11);
8434 BUILD_BUG_ON(FIELD_SIZEOF(struct pqi_general_admin_request,
8435 data.create_operational_oq) != 64 - 11);
8436 BUILD_BUG_ON(FIELD_SIZEOF(struct pqi_general_admin_request,
8437 data.delete_operational_queue) != 64 - 11);
8439 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
8440 header.iu_type) != 0);
8441 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
8442 header.iu_length) != 2);
8443 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
8444 header.work_area) != 6);
8445 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
8447 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
8448 function_code) != 10);
8449 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
8451 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
8452 data.create_operational_iq.status_descriptor) != 12);
8453 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
8454 data.create_operational_iq.iq_pi_offset) != 16);
8455 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
8456 data.create_operational_oq.status_descriptor) != 12);
8457 BUILD_BUG_ON(offsetof(struct pqi_general_admin_response,
8458 data.create_operational_oq.oq_ci_offset) != 16);
8459 BUILD_BUG_ON(sizeof(struct pqi_general_admin_response) != 64);
8461 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8462 header.iu_type) != 0);
8463 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8464 header.iu_length) != 2);
8465 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8466 header.response_queue_id) != 4);
8467 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8468 header.work_area) != 6);
8469 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8471 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8473 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8474 buffer_length) != 12);
8475 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8477 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8478 protocol_specific) != 24);
8479 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8480 error_index) != 27);
8481 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8483 BUILD_BUG_ON(offsetof(struct pqi_raid_path_request,
8484 sg_descriptors) != 64);
8485 BUILD_BUG_ON(sizeof(struct pqi_raid_path_request) !=
8486 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
8488 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8489 header.iu_type) != 0);
8490 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8491 header.iu_length) != 2);
8492 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8493 header.response_queue_id) != 4);
8494 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8495 header.work_area) != 6);
8496 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8498 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8500 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8501 buffer_length) != 16);
8502 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8503 data_encryption_key_index) != 22);
8504 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8505 encrypt_tweak_lower) != 24);
8506 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8507 encrypt_tweak_upper) != 28);
8508 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8510 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8511 error_index) != 48);
8512 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8513 num_sg_descriptors) != 50);
8514 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8516 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8518 BUILD_BUG_ON(offsetof(struct pqi_aio_path_request,
8519 sg_descriptors) != 64);
8520 BUILD_BUG_ON(sizeof(struct pqi_aio_path_request) !=
8521 PQI_OPERATIONAL_IQ_ELEMENT_LENGTH);
8523 BUILD_BUG_ON(offsetof(struct pqi_io_response,
8524 header.iu_type) != 0);
8525 BUILD_BUG_ON(offsetof(struct pqi_io_response,
8526 header.iu_length) != 2);
8527 BUILD_BUG_ON(offsetof(struct pqi_io_response,
8529 BUILD_BUG_ON(offsetof(struct pqi_io_response,
8530 error_index) != 10);
8532 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
8533 header.iu_type) != 0);
8534 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
8535 header.iu_length) != 2);
8536 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
8537 header.response_queue_id) != 4);
8538 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
8540 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
8541 data.report_event_configuration.buffer_length) != 12);
8542 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
8543 data.report_event_configuration.sg_descriptors) != 16);
8544 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
8545 data.set_event_configuration.global_event_oq_id) != 10);
8546 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
8547 data.set_event_configuration.buffer_length) != 12);
8548 BUILD_BUG_ON(offsetof(struct pqi_general_management_request,
8549 data.set_event_configuration.sg_descriptors) != 16);
8551 BUILD_BUG_ON(offsetof(struct pqi_iu_layer_descriptor,
8552 max_inbound_iu_length) != 6);
8553 BUILD_BUG_ON(offsetof(struct pqi_iu_layer_descriptor,
8554 max_outbound_iu_length) != 14);
8555 BUILD_BUG_ON(sizeof(struct pqi_iu_layer_descriptor) != 16);
8557 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8559 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8560 iq_arbitration_priority_support_bitmask) != 8);
8561 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8562 maximum_aw_a) != 9);
8563 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8564 maximum_aw_b) != 10);
8565 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8566 maximum_aw_c) != 11);
8567 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8568 max_inbound_queues) != 16);
8569 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8570 max_elements_per_iq) != 18);
8571 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8572 max_iq_element_length) != 24);
8573 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8574 min_iq_element_length) != 26);
8575 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8576 max_outbound_queues) != 30);
8577 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8578 max_elements_per_oq) != 32);
8579 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8580 intr_coalescing_time_granularity) != 34);
8581 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8582 max_oq_element_length) != 36);
8583 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8584 min_oq_element_length) != 38);
8585 BUILD_BUG_ON(offsetof(struct pqi_device_capability,
8586 iu_layer_descriptors) != 64);
8587 BUILD_BUG_ON(sizeof(struct pqi_device_capability) != 576);
8589 BUILD_BUG_ON(offsetof(struct pqi_event_descriptor,
8591 BUILD_BUG_ON(offsetof(struct pqi_event_descriptor,
8593 BUILD_BUG_ON(sizeof(struct pqi_event_descriptor) != 4);
8595 BUILD_BUG_ON(offsetof(struct pqi_event_config,
8596 num_event_descriptors) != 2);
8597 BUILD_BUG_ON(offsetof(struct pqi_event_config,
8600 BUILD_BUG_ON(PQI_NUM_SUPPORTED_EVENTS !=
8601 ARRAY_SIZE(pqi_supported_event_types));
8603 BUILD_BUG_ON(offsetof(struct pqi_event_response,
8604 header.iu_type) != 0);
8605 BUILD_BUG_ON(offsetof(struct pqi_event_response,
8606 header.iu_length) != 2);
8607 BUILD_BUG_ON(offsetof(struct pqi_event_response,
8609 BUILD_BUG_ON(offsetof(struct pqi_event_response,
8611 BUILD_BUG_ON(offsetof(struct pqi_event_response,
8612 additional_event_id) != 12);
8613 BUILD_BUG_ON(offsetof(struct pqi_event_response,
8615 BUILD_BUG_ON(sizeof(struct pqi_event_response) != 32);
8617 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
8618 header.iu_type) != 0);
8619 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
8620 header.iu_length) != 2);
8621 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
8623 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
8625 BUILD_BUG_ON(offsetof(struct pqi_event_acknowledge_request,
8626 additional_event_id) != 12);
8627 BUILD_BUG_ON(sizeof(struct pqi_event_acknowledge_request) != 16);
8629 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
8630 header.iu_type) != 0);
8631 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
8632 header.iu_length) != 2);
8633 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
8635 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
8637 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
8639 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
8640 protocol_specific) != 24);
8641 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
8642 outbound_queue_id_to_manage) != 26);
8643 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
8644 request_id_to_manage) != 28);
8645 BUILD_BUG_ON(offsetof(struct pqi_task_management_request,
8646 task_management_function) != 30);
8647 BUILD_BUG_ON(sizeof(struct pqi_task_management_request) != 32);
8649 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
8650 header.iu_type) != 0);
8651 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
8652 header.iu_length) != 2);
8653 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
8655 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
8657 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
8658 additional_response_info) != 12);
8659 BUILD_BUG_ON(offsetof(struct pqi_task_management_response,
8660 response_code) != 15);
8661 BUILD_BUG_ON(sizeof(struct pqi_task_management_response) != 16);
8663 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
8664 configured_logical_drive_count) != 0);
8665 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
8666 configuration_signature) != 1);
8667 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
8668 firmware_version) != 5);
8669 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
8670 extended_logical_unit_count) != 154);
8671 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
8672 firmware_build_number) != 190);
8673 BUILD_BUG_ON(offsetof(struct bmic_identify_controller,
8674 controller_mode) != 292);
8676 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
8677 phys_bay_in_box) != 115);
8678 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
8679 device_type) != 120);
8680 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
8681 redundant_path_present_map) != 1736);
8682 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
8683 active_path_number) != 1738);
8684 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
8685 alternate_paths_phys_connector) != 1739);
8686 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
8687 alternate_paths_phys_box_on_port) != 1755);
8688 BUILD_BUG_ON(offsetof(struct bmic_identify_physical_device,
8689 current_queue_depth_limit) != 1796);
8690 BUILD_BUG_ON(sizeof(struct bmic_identify_physical_device) != 2560);
8692 BUILD_BUG_ON(PQI_ADMIN_IQ_NUM_ELEMENTS > 255);
8693 BUILD_BUG_ON(PQI_ADMIN_OQ_NUM_ELEMENTS > 255);
8694 BUILD_BUG_ON(PQI_ADMIN_IQ_ELEMENT_LENGTH %
8695 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0);
8696 BUILD_BUG_ON(PQI_ADMIN_OQ_ELEMENT_LENGTH %
8697 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0);
8698 BUILD_BUG_ON(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH > 1048560);
8699 BUILD_BUG_ON(PQI_OPERATIONAL_IQ_ELEMENT_LENGTH %
8700 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0);
8701 BUILD_BUG_ON(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH > 1048560);
8702 BUILD_BUG_ON(PQI_OPERATIONAL_OQ_ELEMENT_LENGTH %
8703 PQI_QUEUE_ELEMENT_LENGTH_ALIGNMENT != 0);
8705 BUILD_BUG_ON(PQI_RESERVED_IO_SLOTS >= PQI_MAX_OUTSTANDING_REQUESTS);
8706 BUILD_BUG_ON(PQI_RESERVED_IO_SLOTS >=
8707 PQI_MAX_OUTSTANDING_REQUESTS_KDUMP);