diff options
author | Mahesh Rajashekhara <mahesh.rajashekhara@microsemi.com> | 2018-12-18 17:39:07 -0600 |
---|---|---|
committer | Martin K. Petersen <martin.petersen@oracle.com> | 2018-12-19 22:27:52 -0500 |
commit | 4fd22c13ad4409ee44a121b54855bb48d2afd58a (patch) | |
tree | 12654a739003b43b0bd59400eea1d852cbd59b41 /drivers/scsi/smartpqi | |
parent | 65111785acccb836ec75263b03b0e33f21e74f47 (diff) | |
download | linux-4fd22c13ad4409ee44a121b54855bb48d2afd58a.tar.bz2 |
scsi: smartpqi: add ofa support
- when OFA event occurs, driver will stop traffic to RAID/HBA path. Driver
waits for all the outstanding requests to complete.
- Driver sends OFA event acknowledgment to firmware.
- Driver will wait until the new firmware is up and running.
- Driver will free up the resources.
- Driver calls SIS/PQI initialization and rescans the device list.
- Driver will resume the traffic to RAID/HBA path.
Reviewed-by: Murthy Bhat <murthy.bhat@microsemi.com>
Signed-off-by: Mahesh Rajashekhara <mahesh.rajashekhara@microsemi.com>
Signed-off-by: Don Brace <don.brace@microsemi.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/smartpqi')
-rw-r--r-- | drivers/scsi/smartpqi/smartpqi.h | 76 | ||||
-rw-r--r-- | drivers/scsi/smartpqi/smartpqi_init.c | 587 | ||||
-rw-r--r-- | drivers/scsi/smartpqi/smartpqi_sis.c | 13 | ||||
-rw-r--r-- | drivers/scsi/smartpqi/smartpqi_sis.h | 1 |
4 files changed, 634 insertions, 43 deletions
diff --git a/drivers/scsi/smartpqi/smartpqi.h b/drivers/scsi/smartpqi/smartpqi.h index ba499a636f43..af962368818b 100644 --- a/drivers/scsi/smartpqi/smartpqi.h +++ b/drivers/scsi/smartpqi/smartpqi.h @@ -100,6 +100,12 @@ struct pqi_ctrl_registers { struct pqi_device_registers pqi_registers; /* 4000h */ }; +#if ((HZ) < 1000) +#define PQI_HZ 1000 +#else +#define PQI_HZ (HZ) +#endif + #define PQI_DEVICE_REGISTERS_OFFSET 0x4000 enum pqi_io_path { @@ -350,6 +356,10 @@ struct pqi_event_config { #define PQI_MAX_EVENT_DESCRIPTORS 255 +#define PQI_EVENT_OFA_MEMORY_ALLOCATION 0x0 +#define PQI_EVENT_OFA_QUIESCE 0x1 +#define PQI_EVENT_OFA_CANCELLED 0x2 + struct pqi_event_response { struct pqi_iu_header header; u8 event_type; @@ -357,7 +367,17 @@ struct pqi_event_response { u8 request_acknowlege : 1; __le16 event_id; __le32 additional_event_id; - u8 data[16]; + union { + struct { + __le32 bytes_requested; + u8 reserved[12]; + } ofa_memory_allocation; + + struct { + __le16 reason; /* reason for cancellation */ + u8 reserved[14]; + } ofa_cancelled; + } data; }; struct pqi_event_acknowledge_request { @@ -420,6 +440,25 @@ struct pqi_vendor_general_response { }; #define PQI_VENDOR_GENERAL_CONFIG_TABLE_UPDATE 0 +#define PQI_VENDOR_GENERAL_HOST_MEMORY_UPDATE 1 + +#define PQI_OFA_VERSION 1 +#define PQI_OFA_SIGNATURE "OFA_QRM" +#define PQI_OFA_MAX_SG_DESCRIPTORS 64 + +#define PQI_OFA_MEMORY_DESCRIPTOR_LENGTH \ + (offsetof(struct pqi_ofa_memory, sg_descriptor) + \ + (PQI_OFA_MAX_SG_DESCRIPTORS * sizeof(struct pqi_sg_descriptor))) + +struct pqi_ofa_memory { + __le64 signature; /* "OFA_QRM" */ + __le16 version; /* version of this struct(1 = 1st version) */ + u8 reserved[62]; + __le32 bytes_allocated; /* total allocated memory in bytes */ + __le16 num_memory_descriptors; + u8 reserved1[2]; + struct pqi_sg_descriptor sg_descriptor[1]; +}; struct pqi_aio_error_info { u8 status; @@ -526,6 +565,7 @@ struct pqi_raid_error_info { #define PQI_EVENT_TYPE_HARDWARE 0x2 #define PQI_EVENT_TYPE_PHYSICAL_DEVICE 0x4 #define PQI_EVENT_TYPE_LOGICAL_DEVICE 0x5 +#define PQI_EVENT_TYPE_OFA 0xfb #define PQI_EVENT_TYPE_AIO_STATE_CHANGE 0xfd #define PQI_EVENT_TYPE_AIO_CONFIG_CHANGE 0xfe @@ -685,6 +725,7 @@ struct pqi_encryption_info { #define PQI_CONFIG_TABLE_SECTION_FIRMWARE_ERRATA 2 #define PQI_CONFIG_TABLE_SECTION_DEBUG 3 #define PQI_CONFIG_TABLE_SECTION_HEARTBEAT 4 +#define PQI_CONFIG_TABLE_SECTION_SOFT_RESET 5 struct pqi_config_table { u8 signature[8]; /* "CFGTABLE" */ @@ -724,8 +765,9 @@ struct pqi_config_table_firmware_features { /* u8 features_enabled[]; */ }; -#define PQI_FIRMWARE_FEATURE_OFA 0 -#define PQI_FIRMWARE_FEATURE_SMP 1 +#define PQI_FIRMWARE_FEATURE_OFA 0 +#define PQI_FIRMWARE_FEATURE_SMP 1 +#define PQI_FIRMWARE_FEATURE_SOFT_RESET_HANDSHAKE 11 struct pqi_config_table_debug { struct pqi_config_table_section_header header; @@ -737,6 +779,22 @@ struct pqi_config_table_heartbeat { __le32 heartbeat_counter; }; +struct pqi_config_table_soft_reset { + struct pqi_config_table_section_header header; + u8 soft_reset_status; +}; + +#define PQI_SOFT_RESET_INITIATE 0x1 +#define PQI_SOFT_RESET_ABORT 0x2 + +enum pqi_soft_reset_status { + RESET_INITIATE_FIRMWARE, + RESET_INITIATE_DRIVER, + RESET_ABORT, + RESET_NORESPONSE, + RESET_TIMEDOUT +}; + union pqi_reset_register { struct { u32 reset_type : 3; @@ -1000,13 +1058,15 @@ struct pqi_io_request { struct list_head request_list_entry; }; -#define PQI_NUM_SUPPORTED_EVENTS 6 +#define PQI_NUM_SUPPORTED_EVENTS 7 struct pqi_event { bool pending; u8 event_type; __le16 event_id; __le32 additional_event_id; + __le32 ofa_bytes_requested; + __le16 ofa_cancel_reason; }; #define PQI_RESERVED_IO_SLOTS_LUN_RESET 1 @@ -1067,13 +1127,16 @@ struct pqi_ctrl_info { struct mutex scan_mutex; struct mutex lun_reset_mutex; + struct mutex ofa_mutex; /* serialize ofa */ bool controller_online; bool block_requests; bool in_shutdown; + bool in_ofa; u8 inbound_spanning_supported : 1; u8 outbound_spanning_supported : 1; u8 pqi_mode_enabled : 1; u8 pqi_reset_quiesce_supported : 1; + u8 soft_reset_handshake_supported : 1; struct list_head scsi_device_list; spinlock_t scsi_device_list_lock; @@ -1094,6 +1157,7 @@ struct pqi_ctrl_info { int previous_num_interrupts; u32 previous_heartbeat_count; __le32 __iomem *heartbeat_counter; + u8 __iomem *soft_reset_status; struct timer_list heartbeat_timer; struct work_struct ctrl_offline_work; @@ -1105,6 +1169,10 @@ struct pqi_ctrl_info { struct list_head raid_bypass_retry_list; spinlock_t raid_bypass_retry_list_lock; struct work_struct raid_bypass_retry_work; + + struct pqi_ofa_memory *pqi_ofa_mem_virt_addr; + dma_addr_t pqi_ofa_mem_dma_handle; + void **pqi_ofa_chunk_virt_addr; }; enum pqi_ctrl_mode { diff --git a/drivers/scsi/smartpqi/smartpqi_init.c b/drivers/scsi/smartpqi/smartpqi_init.c index 4e384e0fcaa9..c2d09eb8a528 100644 --- a/drivers/scsi/smartpqi/smartpqi_init.c +++ b/drivers/scsi/smartpqi/smartpqi_init.c @@ -74,6 +74,13 @@ static int pqi_aio_submit_io(struct pqi_ctrl_info *ctrl_info, struct scsi_cmnd *scmd, u32 aio_handle, u8 *cdb, unsigned int cdb_length, struct pqi_queue_group *queue_group, struct pqi_encryption_info *encryption_info, bool raid_bypass); +static void pqi_ofa_ctrl_quiesce(struct pqi_ctrl_info *ctrl_info); +static void pqi_ofa_ctrl_unquiesce(struct pqi_ctrl_info *ctrl_info); +static int pqi_ofa_ctrl_restart(struct pqi_ctrl_info *ctrl_info); +static void pqi_ofa_setup_host_buffer(struct pqi_ctrl_info *ctrl_info, + u32 bytes_requested); +static void pqi_ofa_free_host_buffer(struct pqi_ctrl_info *ctrl_info); +static int pqi_ofa_host_memory_update(struct pqi_ctrl_info *ctrl_info); static int pqi_device_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info, struct pqi_scsi_dev *device, unsigned long timeout_secs); @@ -115,6 +122,7 @@ static unsigned int pqi_supported_event_types[] = { PQI_EVENT_TYPE_HARDWARE, PQI_EVENT_TYPE_PHYSICAL_DEVICE, PQI_EVENT_TYPE_LOGICAL_DEVICE, + PQI_EVENT_TYPE_OFA, PQI_EVENT_TYPE_AIO_STATE_CHANGE, PQI_EVENT_TYPE_AIO_CONFIG_CHANGE, }; @@ -292,6 +300,21 @@ static inline bool pqi_device_in_reset(struct pqi_scsi_dev *device) return device->in_reset; } +static inline void pqi_ctrl_ofa_start(struct pqi_ctrl_info *ctrl_info) +{ + ctrl_info->in_ofa = true; +} + +static inline void pqi_ctrl_ofa_done(struct pqi_ctrl_info *ctrl_info) +{ + ctrl_info->in_ofa = false; +} + +static inline bool pqi_ctrl_in_ofa(struct pqi_ctrl_info *ctrl_info) +{ + return ctrl_info->in_ofa; +} + static inline void pqi_device_remove_start(struct pqi_scsi_dev *device) { device->in_remove = true; @@ -308,6 +331,8 @@ static inline void pqi_schedule_rescan_worker_with_delay( { if (pqi_ctrl_offline(ctrl_info)) return; + if (pqi_ctrl_in_ofa(ctrl_info)) + return; schedule_delayed_work(&ctrl_info->rescan_work, delay); } @@ -317,7 +342,7 @@ static inline void pqi_schedule_rescan_worker(struct pqi_ctrl_info *ctrl_info) pqi_schedule_rescan_worker_with_delay(ctrl_info, 0); } -#define PQI_RESCAN_WORK_DELAY (10 * HZ) +#define PQI_RESCAN_WORK_DELAY (10 * PQI_HZ) static inline void pqi_schedule_rescan_worker_delayed( struct pqi_ctrl_info *ctrl_info) @@ -338,6 +363,27 @@ static inline u32 pqi_read_heartbeat_counter(struct pqi_ctrl_info *ctrl_info) return readl(ctrl_info->heartbeat_counter); } +static inline u8 pqi_read_soft_reset_status(struct pqi_ctrl_info *ctrl_info) +{ + if (!ctrl_info->soft_reset_status) + return 0; + + return readb(ctrl_info->soft_reset_status); +} + +static inline void pqi_clear_soft_reset_status(struct pqi_ctrl_info *ctrl_info, + u8 clear) +{ + u8 status; + + if (!ctrl_info->soft_reset_status) + return; + + status = pqi_read_soft_reset_status(ctrl_info); + status &= ~clear; + writeb(status, ctrl_info->soft_reset_status); +} + static int pqi_map_single(struct pci_dev *pci_dev, struct pqi_sg_descriptor *sg_descriptor, void *buffer, size_t buffer_length, enum dma_data_direction data_direction) @@ -846,7 +892,7 @@ static int pqi_write_current_time_to_host_wellness( return rc; } -#define PQI_UPDATE_TIME_WORK_INTERVAL (24UL * 60 * 60 * HZ) +#define PQI_UPDATE_TIME_WORK_INTERVAL (24UL * 60 * 60 * PQI_HZ) static void pqi_update_time_worker(struct work_struct *work) { @@ -1814,6 +1860,9 @@ static void pqi_update_device_list(struct pqi_ctrl_info *ctrl_info, spin_unlock_irqrestore(&ctrl_info->scsi_device_list_lock, flags); + if (pqi_ctrl_in_ofa(ctrl_info)) + pqi_ctrl_ofa_done(ctrl_info); + /* Remove all devices that have gone away. */ list_for_each_entry_safe(device, next, &delete_list, delete_list_entry) { @@ -2158,7 +2207,13 @@ static int pqi_scan_scsi_devices(struct pqi_ctrl_info *ctrl_info) static void pqi_scan_start(struct Scsi_Host *shost) { - pqi_scan_scsi_devices(shost_to_hba(shost)); + struct pqi_ctrl_info *ctrl_info; + + ctrl_info = shost_to_hba(shost); + if (pqi_ctrl_in_ofa(ctrl_info)) + return; + + pqi_scan_scsi_devices(ctrl_info); } /* Returns TRUE if scan is finished. */ @@ -2185,6 +2240,12 @@ static void pqi_wait_until_lun_reset_finished(struct pqi_ctrl_info *ctrl_info) mutex_unlock(&ctrl_info->lun_reset_mutex); } +static void pqi_wait_until_ofa_finished(struct pqi_ctrl_info *ctrl_info) +{ + mutex_lock(&ctrl_info->ofa_mutex); + mutex_unlock(&ctrl_info->ofa_mutex); +} + static inline void pqi_set_encryption_info( struct pqi_encryption_info *encryption_info, struct raid_map *raid_map, u64 first_block) @@ -2561,7 +2622,7 @@ static int pqi_wait_for_pqi_mode_ready(struct pqi_ctrl_info *ctrl_info) u8 status; pqi_registers = ctrl_info->pqi_registers; - timeout = (PQI_MODE_READY_TIMEOUT_SECS * HZ) + jiffies; + timeout = (PQI_MODE_READY_TIMEOUT_SECS * PQI_HZ) + jiffies; while (1) { signature = readq(&pqi_registers->signature); @@ -3000,6 +3061,111 @@ static void pqi_acknowledge_event(struct pqi_ctrl_info *ctrl_info, pqi_send_event_ack(ctrl_info, &request, sizeof(request)); } +#define PQI_SOFT_RESET_STATUS_TIMEOUT_SECS 30 +#define PQI_SOFT_RESET_STATUS_POLL_INTERVAL_SECS 1 + +static enum pqi_soft_reset_status pqi_poll_for_soft_reset_status( + struct pqi_ctrl_info *ctrl_info) +{ + unsigned long timeout; + u8 status; + + timeout = (PQI_SOFT_RESET_STATUS_TIMEOUT_SECS * PQI_HZ) + jiffies; + + while (1) { + status = pqi_read_soft_reset_status(ctrl_info); + if (status & PQI_SOFT_RESET_INITIATE) + return RESET_INITIATE_DRIVER; + + if (status & PQI_SOFT_RESET_ABORT) + return RESET_ABORT; + + if (time_after(jiffies, timeout)) { + dev_err(&ctrl_info->pci_dev->dev, + "timed out waiting for soft reset status\n"); + return RESET_TIMEDOUT; + } + + if (!sis_is_firmware_running(ctrl_info)) + return RESET_NORESPONSE; + + ssleep(PQI_SOFT_RESET_STATUS_POLL_INTERVAL_SECS); + } +} + +static void pqi_process_soft_reset(struct pqi_ctrl_info *ctrl_info, + enum pqi_soft_reset_status reset_status) +{ + int rc; + + switch (reset_status) { + case RESET_INITIATE_DRIVER: + /* fall through */ + case RESET_TIMEDOUT: + dev_info(&ctrl_info->pci_dev->dev, + "resetting controller %u\n", ctrl_info->ctrl_id); + sis_soft_reset(ctrl_info); + /* fall through */ + case RESET_INITIATE_FIRMWARE: + rc = pqi_ofa_ctrl_restart(ctrl_info); + pqi_ofa_free_host_buffer(ctrl_info); + dev_info(&ctrl_info->pci_dev->dev, + "Online Firmware Activation for controller %u: %s\n", + ctrl_info->ctrl_id, rc == 0 ? "SUCCESS" : "FAILED"); + break; + case RESET_ABORT: + pqi_ofa_ctrl_unquiesce(ctrl_info); + dev_info(&ctrl_info->pci_dev->dev, + "Online Firmware Activation for controller %u: %s\n", + ctrl_info->ctrl_id, "ABORTED"); + break; + case RESET_NORESPONSE: + pqi_ofa_free_host_buffer(ctrl_info); + pqi_take_ctrl_offline(ctrl_info); + break; + } +} + +static void pqi_ofa_process_event(struct pqi_ctrl_info *ctrl_info, + struct pqi_event *event) +{ + u16 event_id; + enum pqi_soft_reset_status status; + + event_id = get_unaligned_le16(&event->event_id); + + mutex_lock(&ctrl_info->ofa_mutex); + + if (event_id == PQI_EVENT_OFA_QUIESCE) { + dev_info(&ctrl_info->pci_dev->dev, + "Received Online Firmware Activation quiesce event for controller %u\n", + ctrl_info->ctrl_id); + pqi_ofa_ctrl_quiesce(ctrl_info); + pqi_acknowledge_event(ctrl_info, event); + if (ctrl_info->soft_reset_handshake_supported) { + status = pqi_poll_for_soft_reset_status(ctrl_info); + pqi_process_soft_reset(ctrl_info, status); + } else { + pqi_process_soft_reset(ctrl_info, + RESET_INITIATE_FIRMWARE); + } + + } else if (event_id == PQI_EVENT_OFA_MEMORY_ALLOCATION) { + pqi_acknowledge_event(ctrl_info, event); + pqi_ofa_setup_host_buffer(ctrl_info, + le32_to_cpu(event->ofa_bytes_requested)); + pqi_ofa_host_memory_update(ctrl_info); + } else if (event_id == PQI_EVENT_OFA_CANCELLED) { + pqi_ofa_free_host_buffer(ctrl_info); + pqi_acknowledge_event(ctrl_info, event); + dev_info(&ctrl_info->pci_dev->dev, + "Online Firmware Activation(%u) cancel reason : %u\n", + ctrl_info->ctrl_id, event->ofa_cancel_reason); + } + + mutex_unlock(&ctrl_info->ofa_mutex); +} + static void pqi_event_worker(struct work_struct *work) { unsigned int i; @@ -3019,6 +3185,11 @@ static void pqi_event_worker(struct work_struct *work) for (i = 0; i < PQI_NUM_SUPPORTED_EVENTS; i++) { if (event->pending) { event->pending = false; + if (event->event_type == PQI_EVENT_TYPE_OFA) { + pqi_ctrl_unbusy(ctrl_info); + pqi_ofa_process_event(ctrl_info, event); + return; + } pqi_acknowledge_event(ctrl_info, event); } event++; @@ -3028,7 +3199,7 @@ out: pqi_ctrl_unbusy(ctrl_info); } -#define PQI_HEARTBEAT_TIMER_INTERVAL (10 * HZ) +#define PQI_HEARTBEAT_TIMER_INTERVAL (10 * PQI_HZ) static void pqi_heartbeat_timer_handler(struct timer_list *t) { @@ -3097,6 +3268,24 @@ static inline bool pqi_is_supported_event(unsigned int event_type) return pqi_event_type_to_event_index(event_type) != -1; } +static void pqi_ofa_capture_event_payload(struct pqi_event *event, + struct pqi_event_response *response) +{ + u16 event_id; + + event_id = get_unaligned_le16(&event->event_id); + + if (event->event_type == PQI_EVENT_TYPE_OFA) { + if (event_id == PQI_EVENT_OFA_MEMORY_ALLOCATION) { + event->ofa_bytes_requested = + response->data.ofa_memory_allocation.bytes_requested; + } else if (event_id == PQI_EVENT_OFA_CANCELLED) { + event->ofa_cancel_reason = + response->data.ofa_cancelled.reason; + } + } +} + static unsigned int pqi_process_event_intr(struct pqi_ctrl_info *ctrl_info) { unsigned int num_events; @@ -3131,6 +3320,7 @@ static unsigned int pqi_process_event_intr(struct pqi_ctrl_info *ctrl_info) event->event_id = response->event_id; event->additional_event_id = response->additional_event_id; + pqi_ofa_capture_event_payload(event, response); } } @@ -3564,7 +3754,7 @@ static int pqi_alloc_admin_queues(struct pqi_ctrl_info *ctrl_info) return 0; } -#define PQI_ADMIN_QUEUE_CREATE_TIMEOUT_JIFFIES HZ +#define PQI_ADMIN_QUEUE_CREATE_TIMEOUT_JIFFIES PQI_HZ #define PQI_ADMIN_QUEUE_CREATE_POLL_INTERVAL_MSECS 1 static int pqi_create_admin_queues(struct pqi_ctrl_info *ctrl_info) @@ -3657,7 +3847,7 @@ static int pqi_poll_for_admin_response(struct pqi_ctrl_info *ctrl_info, admin_queues = &ctrl_info->admin_queues; oq_ci = admin_queues->oq_ci_copy; - timeout = (PQI_ADMIN_REQUEST_TIMEOUT_SECS * HZ) + jiffies; + timeout = (PQI_ADMIN_REQUEST_TIMEOUT_SECS * PQI_HZ) + jiffies; while (1) { oq_pi = readl(admin_queues->oq_pi); @@ -3772,7 +3962,7 @@ static int pqi_wait_for_completion_io(struct pqi_ctrl_info *ctrl_info, while (1) { if (wait_for_completion_io_timeout(wait, - PQI_WAIT_FOR_COMPLETION_IO_TIMEOUT_SECS * HZ)) { + PQI_WAIT_FOR_COMPLETION_IO_TIMEOUT_SECS * PQI_HZ)) { rc = 0; break; } @@ -5145,7 +5335,8 @@ static int pqi_scsi_queue_command(struct Scsi_Host *shost, } pqi_ctrl_busy(ctrl_info); - if (pqi_ctrl_blocked(ctrl_info) || pqi_device_in_reset(device)) { + if (pqi_ctrl_blocked(ctrl_info) || pqi_device_in_reset(device) || + pqi_ctrl_in_ofa(ctrl_info)) { rc = SCSI_MLQUEUE_HOST_BUSY; goto out; } @@ -5290,12 +5481,48 @@ static void pqi_fail_io_queued_for_device(struct pqi_ctrl_info *ctrl_info, } } +static void pqi_fail_io_queued_for_all_devices(struct pqi_ctrl_info *ctrl_info) +{ + unsigned int i; + unsigned int path; + struct pqi_queue_group *queue_group; + unsigned long flags; + struct pqi_io_request *io_request; + struct pqi_io_request *next; + struct scsi_cmnd *scmd; + + for (i = 0; i < ctrl_info->num_queue_groups; i++) { + queue_group = &ctrl_info->queue_groups[i]; + + for (path = 0; path < 2; path++) { + spin_lock_irqsave(&queue_group->submit_lock[path], + flags); + + list_for_each_entry_safe(io_request, next, + &queue_group->request_list[path], + request_list_entry) { + + scmd = io_request->scmd; + if (!scmd) + continue; + + list_del(&io_request->request_list_entry); + set_host_byte(scmd, DID_RESET); + pqi_scsi_done(scmd); + } + + spin_unlock_irqrestore( + &queue_group->submit_lock[path], flags); + } + } +} + static int pqi_device_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info, struct pqi_scsi_dev *device, unsigned long timeout_secs) { unsigned long timeout; - timeout = (timeout_secs * HZ) + jiffies; + timeout = (timeout_secs * PQI_HZ) + jiffies; while (atomic_read(&device->scsi_cmds_outstanding)) { pqi_check_ctrl_health(ctrl_info); @@ -5314,12 +5541,15 @@ static int pqi_device_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info, return 0; } -static int pqi_ctrl_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info) +static int pqi_ctrl_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info, + unsigned long timeout_secs) { bool io_pending; unsigned long flags; + unsigned long timeout; struct pqi_scsi_dev *device; + timeout = (timeout_secs * PQI_HZ) + jiffies; while (1) { io_pending = false; @@ -5341,6 +5571,13 @@ static int pqi_ctrl_wait_for_pending_io(struct pqi_ctrl_info *ctrl_info) if (pqi_ctrl_offline(ctrl_info)) return -ENXIO; + if (timeout_secs != NO_TIMEOUT) { + if (time_after(jiffies, timeout)) { + dev_err(&ctrl_info->pci_dev->dev, + "timed out waiting for pending IO\n"); + return -ETIMEDOUT; + } + } usleep_range(1000, 2000); } @@ -5364,7 +5601,7 @@ static int pqi_wait_for_lun_reset_completion(struct pqi_ctrl_info *ctrl_info, while (1) { if (wait_for_completion_io_timeout(wait, - PQI_LUN_RESET_TIMEOUT_SECS * HZ)) { + PQI_LUN_RESET_TIMEOUT_SECS * PQI_HZ)) { rc = 0; break; } @@ -5419,11 +5656,12 @@ static int pqi_lun_reset(struct pqi_ctrl_info *ctrl_info, #define PQI_LUN_RESET_RETRY_INTERVAL_MSECS 10000 /* Performs a reset at the LUN level. */ -static int pqi_device_reset(struct pqi_ctrl_info *ctrl_info, +static int _pqi_device_reset(struct pqi_ctrl_info *ctrl_info, struct pqi_scsi_dev *device) { int rc; unsigned int retries; + unsigned long timeout_secs; for (retries = 0;;) { rc = pqi_lun_reset(ctrl_info, device); @@ -5432,13 +5670,38 @@ static int pqi_device_reset(struct pqi_ctrl_info *ctrl_info, break; msleep(PQI_LUN_RESET_RETRY_INTERVAL_MSECS); } - if (rc == 0) - rc = pqi_device_wait_for_pending_io(ctrl_info, - device, NO_TIMEOUT); + timeout_secs = rc ? PQI_LUN_RESET_TIMEOUT_SECS : NO_TIMEOUT; + + rc |= pqi_device_wait_for_pending_io(ctrl_info, device, timeout_secs); return rc == 0 ? SUCCESS : FAILED; } +static int pqi_device_reset(struct pqi_ctrl_info *ctrl_info, + struct pqi_scsi_dev *device) +{ + int rc; + + mutex_lock(&ctrl_info->lun_reset_mutex); + + pqi_ctrl_block_requests(ctrl_info); + pqi_ctrl_wait_until_quiesced(ctrl_info); + pqi_fail_io_queued_for_device(ctrl_info, device); + rc = pqi_wait_until_inbound_queues_empty(ctrl_info); + pqi_device_reset_start(device); + pqi_ctrl_unblock_requests(ctrl_info); + + if (rc) + rc = FAILED; + else + rc = _pqi_device_reset(ctrl_info, device); + + pqi_device_reset_done(device); + + mutex_unlock(&ctrl_info->lun_reset_mutex); + return rc; +} + static int pqi_eh_device_reset_handler(struct scsi_cmnd *scmd) { int rc; @@ -5456,28 +5719,16 @@ static int pqi_eh_device_reset_handler(struct scsi_cmnd *scmd) pqi_check_ctrl_health(ctrl_info); if (pqi_ctrl_offline(ctrl_info)) { + dev_err(&ctrl_info->pci_dev->dev, + "controller %u offlined - cannot send device reset\n", + ctrl_info->ctrl_id); rc = FAILED; goto out; } - mutex_lock(&ctrl_info->lun_reset_mutex); - - pqi_ctrl_block_requests(ctrl_info); - pqi_ctrl_wait_until_quiesced(ctrl_info); - pqi_fail_io_queued_for_device(ctrl_info, device); - rc = pqi_wait_until_inbound_queues_empty(ctrl_info); - pqi_device_reset_start(device); - pqi_ctrl_unblock_requests(ctrl_info); - - if (rc) - rc = FAILED; - else - rc = pqi_device_reset(ctrl_info, device); - - pqi_device_reset_done(device); - - mutex_unlock(&ctrl_info->lun_reset_mutex); + pqi_wait_until_ofa_finished(ctrl_info); + rc = pqi_device_reset(ctrl_info, device); out: dev_err(&ctrl_info->pci_dev->dev, "reset of scsi %d:%d:%d:%d: %s\n", @@ -5796,6 +6047,9 @@ static int pqi_ioctl(struct scsi_device *sdev, int cmd, void __user *arg) ctrl_info = shost_to_hba(sdev->host); + if (pqi_ctrl_in_ofa(ctrl_info)) + return -EBUSY; + switch (cmd) { case CCISS_DEREGDISK: case CCISS_REGNEWDISK: @@ -6457,6 +6711,11 @@ static struct pqi_firmware_feature pqi_firmware_features[] = { .feature_bit = PQI_FIRMWARE_FEATURE_SMP, .feature_status = pqi_firmware_feature_status, }, + { + .feature_name = "New Soft Reset Handshake", + .feature_bit = PQI_FIRMWARE_FEATURE_SOFT_RESET_HANDSHAKE, + .feature_status = pqi_firmware_feature_status, + }, }; static void pqi_process_firmware_features( @@ -6509,13 +6768,19 @@ static void pqi_process_firmware_features( return; } + ctrl_info->soft_reset_handshake_supported = false; for (i = 0; i < ARRAY_SIZE(pqi_firmware_features); i++) { if (!pqi_firmware_features[i].supported) continue; if (pqi_is_firmware_feature_enabled(firmware_features, firmware_features_iomem_addr, - pqi_firmware_features[i].feature_bit)) + pqi_firmware_features[i].feature_bit)) { pqi_firmware_features[i].enabled = true; + if (pqi_firmware_features[i].feature_bit == + PQI_FIRMWARE_FEATURE_SOFT_RESET_HANDSHAKE) + ctrl_info->soft_reset_handshake_supported = + true; + } pqi_firmware_feature_update(ctrl_info, &pqi_firmware_features[i]); } @@ -6596,6 +6861,13 @@ static int pqi_process_config_table(struct pqi_ctrl_info *ctrl_info) struct pqi_config_table_heartbeat, heartbeat_counter); break; + case PQI_CONFIG_TABLE_SECTION_SOFT_RESET: + ctrl_info->soft_reset_status = + table_iomem_addr + + section_offset + + offsetof(struct pqi_config_table_soft_reset, + soft_reset_status); + break; } section_offset = @@ -6879,6 +7151,24 @@ static int pqi_ctrl_init_resume(struct pqi_ctrl_info *ctrl_info) return rc; /* + * Get the controller properties. This allows us to determine + * whether or not it supports PQI mode. + */ + rc = sis_get_ctrl_properties(ctrl_info); + if (rc) { + dev_err(&ctrl_info->pci_dev->dev, + "error obtaining controller properties\n"); + return rc; + } + + rc = sis_get_pqi_capabilities(ctrl_info); + if (rc) { + dev_err(&ctrl_info->pci_dev->dev, + "error obtaining controller capabilities\n"); + return rc; + } + + /* * If the function we are about to call succeeds, the * controller will transition from legacy SIS mode * into PQI mode. @@ -6918,9 +7208,14 @@ static int pqi_ctrl_init_resume(struct pqi_ctrl_info *ctrl_info) pqi_change_irq_mode(ctrl_info, IRQ_MODE_MSIX); ctrl_info->controller_online = true; - pqi_start_heartbeat_timer(ctrl_info); pqi_ctrl_unblock_requests(ctrl_info); + rc = pqi_process_config_table(ctrl_info); + if (rc) + return rc; + + pqi_start_heartbeat_timer(ctrl_info); + rc = pqi_enable_events(ctrl_info); if (rc) { dev_err(&ctrl_info->pci_dev->dev, @@ -6928,6 +7223,13 @@ static int pqi_ctrl_init_resume(struct pqi_ctrl_info *ctrl_info) return rc; } + rc = pqi_get_ctrl_firmware_version(ctrl_info); + if (rc) { + dev_err(&ctrl_info->pci_dev->dev, + "error obtaining firmware version\n"); + return rc; + } + rc = pqi_set_diag_rescan(ctrl_info); if (rc) { dev_err(&ctrl_info->pci_dev->dev, @@ -7045,6 +7347,7 @@ static struct pqi_ctrl_info *pqi_alloc_ctrl_info(int numa_node) mutex_init(&ctrl_info->scan_mutex); mutex_init(&ctrl_info->lun_reset_mutex); + mutex_init(&ctrl_info->ofa_mutex); INIT_LIST_HEAD(&ctrl_info->scsi_device_list); spin_lock_init(&ctrl_info->scsi_device_list_lock); @@ -7121,6 +7424,217 @@ static void pqi_remove_ctrl(struct pqi_ctrl_info *ctrl_info) pqi_free_ctrl_resources(ctrl_info); } +static void pqi_ofa_ctrl_quiesce(struct pqi_ctrl_info *ctrl_info) +{ + pqi_cancel_update_time_worker(ctrl_info); + pqi_cancel_rescan_worker(ctrl_info); + pqi_wait_until_lun_reset_finished(ctrl_info); + pqi_wait_until_scan_finished(ctrl_info); + pqi_ctrl_ofa_start(ctrl_info); + pqi_ctrl_block_requests(ctrl_info); + pqi_ctrl_wait_until_quiesced(ctrl_info); + pqi_ctrl_wait_for_pending_io(ctrl_info, PQI_PENDING_IO_TIMEOUT_SECS); + pqi_fail_io_queued_for_all_devices(ctrl_info); + pqi_wait_until_inbound_queues_empty(ctrl_info); + pqi_stop_heartbeat_timer(ctrl_info); + ctrl_info->pqi_mode_enabled = false; + pqi_save_ctrl_mode(ctrl_info, SIS_MODE); +} + +static void pqi_ofa_ctrl_unquiesce(struct pqi_ctrl_info *ctrl_info) +{ + pqi_ofa_free_host_buffer(ctrl_info); + ctrl_info->pqi_mode_enabled = true; + pqi_save_ctrl_mode(ctrl_info, PQI_MODE); + ctrl_info->controller_online = true; + pqi_ctrl_unblock_requests(ctrl_info); + pqi_start_heartbeat_timer(ctrl_info); + pqi_schedule_update_time_worker(ctrl_info); + pqi_clear_soft_reset_status(ctrl_info, + PQI_SOFT_RESET_ABORT); + pqi_scan_scsi_devices(ctrl_info); +} + +static int pqi_ofa_alloc_mem(struct pqi_ctrl_info *ctrl_info, + u32 total_size, u32 chunk_size) +{ + u32 sg_count; + u32 size; + int i; + struct pqi_sg_descriptor *mem_descriptor = NULL; + struct device *dev; + struct pqi_ofa_memory *ofap; + + dev = &ctrl_info->pci_dev->dev; + + sg_count = (total_size + chunk_size - 1); + do_div(sg_count, chunk_size); + + ofap = ctrl_info->pqi_ofa_mem_virt_addr; + + if (sg_count*chunk_size < total_size) + goto out; + + ctrl_info->pqi_ofa_chunk_virt_addr = + kcalloc(sg_count, sizeof(void *), GFP_KERNEL); + if (!ctrl_info->pqi_ofa_chunk_virt_addr) + goto out; + + for (size = 0, i = 0; size < total_size; size += chunk_size, i++) { + dma_addr_t dma_handle; + + ctrl_info->pqi_ofa_chunk_virt_addr[i] = + dma_zalloc_coherent(dev, chunk_size, &dma_handle, + GFP_KERNEL); + + if (!ctrl_info->pqi_ofa_chunk_virt_addr[i]) + break; + + mem_descriptor = &ofap->sg_descriptor[i]; + put_unaligned_le64 ((u64) dma_handle, &mem_descriptor->address); + put_unaligned_le32 (chunk_size, &mem_descriptor->length); + } + + if (!size || size < total_size) + goto out_free_chunks; + + put_unaligned_le32(CISS_SG_LAST, &mem_descriptor->flags); + put_unaligned_le16(sg_count, &ofap->num_memory_descriptors); + put_unaligned_le32(size, &ofap->bytes_allocated); + + return 0; + +out_free_chunks: + while (--i >= 0) { + mem_descriptor = &ofap->sg_descriptor[i]; + dma_free_coherent(dev, chunk_size, + ctrl_info->pqi_ofa_chunk_virt_addr[i], + get_unaligned_le64(&mem_descriptor->address)); + } + kfree(ctrl_info->pqi_ofa_chunk_virt_addr); + +out: + put_unaligned_le32 (0, &ofap->bytes_allocated); + return -ENOMEM; +} + +static int pqi_ofa_alloc_host_buffer(struct pqi_ctrl_info *ctrl_info) +{ + u32 total_size; + u32 min_chunk_size; + u32 chunk_sz; + + total_size = le32_to_cpu( + ctrl_info->pqi_ofa_mem_virt_addr->bytes_allocated); + min_chunk_size = total_size / PQI_OFA_MAX_SG_DESCRIPTORS; + + for (chunk_sz = total_size; chunk_sz >= min_chunk_size; chunk_sz /= 2) + if (!pqi_ofa_alloc_mem(ctrl_info, total_size, chunk_sz)) + return 0; + + return -ENOMEM; +} + +static void pqi_ofa_setup_host_buffer(struct pqi_ctrl_info *ctrl_info, + u32 bytes_requested) +{ + struct pqi_ofa_memory *pqi_ofa_memory; + struct device *dev; + + dev = &ctrl_info->pci_dev->dev; + pqi_ofa_memory = dma_zalloc_coherent(dev, + PQI_OFA_MEMORY_DESCRIPTOR_LENGTH, + &ctrl_info->pqi_ofa_mem_dma_handle, + GFP_KERNEL); + + if (!pqi_ofa_memory) + return; + + put_unaligned_le16(PQI_OFA_VERSION, &pqi_ofa_memory->version); + memcpy(&pqi_ofa_memory->signature, PQI_OFA_SIGNATURE, + sizeof(pqi_ofa_memory->signature)); + pqi_ofa_memory->bytes_allocated = cpu_to_le32(bytes_requested); + + ctrl_info->pqi_ofa_mem_virt_addr = pqi_ofa_memory; + + if (pqi_ofa_alloc_host_buffer(ctrl_info) < 0) { + dev_err(dev, "Failed to allocate host buffer of size = %u", + bytes_requested); + } +} + +static void pqi_ofa_free_host_buffer(struct pqi_ctrl_info *ctrl_info) +{ + int i; + struct pqi_sg_descriptor *mem_descriptor; + struct pqi_ofa_memory *ofap; + + ofap = ctrl_info->pqi_ofa_mem_virt_addr; + + if (!ofap) + return; + + if (!ofap->bytes_allocated) + goto out; + + mem_descriptor = ofap->sg_descriptor; + + for (i = 0; i < get_unaligned_le16(&ofap->num_memory_descriptors); + i++) { + dma_free_coherent(&ctrl_info->pci_dev->dev, + get_unaligned_le32(&mem_descriptor[i].length), + ctrl_info->pqi_ofa_chunk_virt_addr[i], + get_unaligned_le64(&mem_descriptor[i].address)); + } + kfree(ctrl_info->pqi_ofa_chunk_virt_addr); + +out: + dma_free_coherent(&ctrl_info->pci_dev->dev, + PQI_OFA_MEMORY_DESCRIPTOR_LENGTH, ofap, + ctrl_info->pqi_ofa_mem_dma_handle); + ctrl_info->pqi_ofa_mem_virt_addr = NULL; +} + +static int pqi_ofa_host_memory_update(struct pqi_ctrl_info *ctrl_info) +{ + struct pqi_vendor_general_request request; + size_t size; + struct pqi_ofa_memory *ofap; + + memset(&request, 0, sizeof(request)); + + ofap = ctrl_info->pqi_ofa_mem_virt_addr; + + request.header.iu_type = PQI_REQUEST_IU_VENDOR_GENERAL; + put_unaligned_le16(sizeof(request) - PQI_REQUEST_HEADER_LENGTH, + &request.header.iu_length); + put_unaligned_le16(PQI_VENDOR_GENERAL_HOST_MEMORY_UPDATE, + &request.function_code); + + if (ofap) { + size = offsetof(struct pqi_ofa_memory, sg_descriptor) + + get_unaligned_le16(&ofap->num_memory_descriptors) * + sizeof(struct pqi_sg_descriptor); + + put_unaligned_le64((u64)ctrl_info->pqi_ofa_mem_dma_handle, + &request.data.ofa_memory_allocation.buffer_address); + put_unaligned_le32(size, + &request.data.ofa_memory_allocation.buffer_length); + + } + + return pqi_submit_raid_request_synchronous(ctrl_info, &request.header, + 0, NULL, NO_TIMEOUT); +} + +#define PQI_POST_RESET_DELAY_B4_MSGU_READY 5000 + +static int pqi_ofa_ctrl_restart(struct pqi_ctrl_info *ctrl_info) +{ + msleep(PQI_POST_RESET_DELAY_B4_MSGU_READY); + return pqi_ctrl_init_resume(ctrl_info); +} + static void pqi_perform_lockup_action(void) { switch (pqi_lockup_action) { @@ -7340,11 +7854,12 @@ static __maybe_unused int pqi_suspend(struct pci_dev *pci_dev, pm_message_t stat pqi_cancel_rescan_worker(ctrl_info); pqi_wait_until_scan_finished(ctrl_info); pqi_wait_until_lun_reset_finished(ctrl_info); + pqi_wait_until_ofa_finished(ctrl_info); pqi_flush_cache(ctrl_info, SUSPEND); pqi_ctrl_block_requests(ctrl_info); pqi_ctrl_wait_until_quiesced(ctrl_info); pqi_wait_until_inbound_queues_empty(ctrl_info); - pqi_ctrl_wait_for_pending_io(ctrl_info); + pqi_ctrl_wait_for_pending_io(ctrl_info, NO_TIMEOUT); pqi_stop_heartbeat_timer(ctrl_info); if (state.event == PM_EVENT_FREEZE) diff --git a/drivers/scsi/smartpqi/smartpqi_sis.c b/drivers/scsi/smartpqi/smartpqi_sis.c index 9d3043df22af..dcd11c6418cc 100644 --- a/drivers/scsi/smartpqi/smartpqi_sis.c +++ b/drivers/scsi/smartpqi/smartpqi_sis.c @@ -34,6 +34,7 @@ #define SIS_REENABLE_SIS_MODE 0x1 #define SIS_ENABLE_MSIX 0x40 #define SIS_ENABLE_INTX 0x80 +#define SIS_SOFT_RESET 0x100 #define SIS_CMD_READY 0x200 #define SIS_TRIGGER_SHUTDOWN 0x800000 #define SIS_PQI_RESET_QUIESCE 0x1000000 @@ -90,7 +91,7 @@ static int sis_wait_for_ctrl_ready_with_timeout(struct pqi_ctrl_info *ctrl_info, unsigned long timeout; u32 status; - timeout = (timeout_secs * HZ) + jiffies; + timeout = (timeout_secs * PQI_HZ) + jiffies; while (1) { status = readl(&ctrl_info->registers->sis_firmware_status); @@ -202,7 +203,7 @@ static int sis_send_sync_cmd(struct pqi_ctrl_info *ctrl_info, * the top of the loop in order to give the controller time to start * processing the command before we start polling. */ - timeout = (SIS_CMD_COMPLETE_TIMEOUT_SECS * HZ) + jiffies; + timeout = (SIS_CMD_COMPLETE_TIMEOUT_SECS * PQI_HZ) + jiffies; while (1) { msleep(SIS_CMD_COMPLETE_POLL_INTERVAL_MSECS); doorbell = readl(®isters->sis_ctrl_to_host_doorbell); @@ -348,7 +349,7 @@ static int sis_wait_for_doorbell_bit_to_clear( u32 doorbell_register; unsigned long timeout; - timeout = (SIS_DOORBELL_BIT_CLEAR_TIMEOUT_SECS * HZ) + jiffies; + timeout = (SIS_DOORBELL_BIT_CLEAR_TIMEOUT_SECS * PQI_HZ) + jiffies; while (1) { doorbell_register = @@ -420,6 +421,12 @@ u32 sis_read_driver_scratch(struct pqi_ctrl_info *ctrl_info) return readl(&ctrl_info->registers->sis_driver_scratch); } +void sis_soft_reset(struct pqi_ctrl_info *ctrl_info) +{ + writel(SIS_SOFT_RESET, + &ctrl_info->registers->sis_host_to_ctrl_doorbell); +} + static void __attribute__((unused)) verify_structures(void) { BUILD_BUG_ON(offsetof(struct sis_base_struct, diff --git a/drivers/scsi/smartpqi/smartpqi_sis.h b/drivers/scsi/smartpqi/smartpqi_sis.h index 2bf889dbf5ab..d018cb9c3f82 100644 --- a/drivers/scsi/smartpqi/smartpqi_sis.h +++ b/drivers/scsi/smartpqi/smartpqi_sis.h @@ -33,5 +33,6 @@ int sis_pqi_reset_quiesce(struct pqi_ctrl_info *ctrl_info); int sis_reenable_sis_mode(struct pqi_ctrl_info *ctrl_info); void sis_write_driver_scratch(struct pqi_ctrl_info *ctrl_info, u32 value); u32 sis_read_driver_scratch(struct pqi_ctrl_info *ctrl_info); +void sis_soft_reset(struct pqi_ctrl_info *ctrl_info); #endif /* _SMARTPQI_SIS_H */ |