diff options
Diffstat (limited to 'drivers/scsi/hpsa.c')
| -rw-r--r-- | drivers/scsi/hpsa.c | 849 |
1 files changed, 191 insertions, 658 deletions
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index 73daace478cb..9934947073e6 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -60,7 +60,7 @@ * HPSA_DRIVER_VERSION must be 3 byte values (0-255) separated by '.' * with an optional trailing '-' followed by a byte value (0-255). */ -#define HPSA_DRIVER_VERSION "3.4.18-0" +#define HPSA_DRIVER_VERSION "3.4.20-0" #define DRIVER_NAME "HP HPSA Driver (v " HPSA_DRIVER_VERSION ")" #define HPSA "hpsa" @@ -258,7 +258,6 @@ static int hpsa_scan_finished(struct Scsi_Host *sh, static int hpsa_change_queue_depth(struct scsi_device *sdev, int qdepth); static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd); -static int hpsa_eh_abort_handler(struct scsi_cmnd *scsicmd); static int hpsa_slave_alloc(struct scsi_device *sdev); static int hpsa_slave_configure(struct scsi_device *sdev); static void hpsa_slave_destroy(struct scsi_device *sdev); @@ -326,7 +325,7 @@ static inline bool hpsa_is_cmd_idle(struct CommandList *c) static inline bool hpsa_is_pending_event(struct CommandList *c) { - return c->abort_pending || c->reset_pending; + return c->reset_pending; } /* extract sense key, asc, and ascq from sense data. -1 means invalid. */ @@ -581,12 +580,6 @@ static u32 soft_unresettable_controller[] = { 0x409D0E11, /* Smart Array 6400 EM */ }; -static u32 needs_abort_tags_swizzled[] = { - 0x323D103C, /* Smart Array P700m */ - 0x324a103C, /* Smart Array P712m */ - 0x324b103C, /* SmartArray P711m */ -}; - static int board_id_in_array(u32 a[], int nelems, u32 board_id) { int i; @@ -615,12 +608,6 @@ static int ctlr_is_resettable(u32 board_id) ctlr_is_soft_resettable(board_id); } -static int ctlr_needs_abort_tags_swizzled(u32 board_id) -{ - return board_id_in_array(needs_abort_tags_swizzled, - ARRAY_SIZE(needs_abort_tags_swizzled), board_id); -} - static ssize_t host_show_resettable(struct device *dev, struct device_attribute *attr, char *buf) { @@ -928,8 +915,8 @@ static struct device_attribute *hpsa_shost_attrs[] = { NULL, }; -#define HPSA_NRESERVED_CMDS (HPSA_CMDS_RESERVED_FOR_ABORTS + \ - HPSA_CMDS_RESERVED_FOR_DRIVER + HPSA_MAX_CONCURRENT_PASSTHRUS) +#define HPSA_NRESERVED_CMDS (HPSA_CMDS_RESERVED_FOR_DRIVER +\ + HPSA_MAX_CONCURRENT_PASSTHRUS) static struct scsi_host_template hpsa_driver_template = { .module = THIS_MODULE, @@ -941,7 +928,6 @@ static struct scsi_host_template hpsa_driver_template = { .change_queue_depth = hpsa_change_queue_depth, .this_id = -1, .use_clustering = ENABLE_CLUSTERING, - .eh_abort_handler = hpsa_eh_abort_handler, .eh_device_reset_handler = hpsa_eh_device_reset_handler, .ioctl = hpsa_ioctl, .slave_alloc = hpsa_slave_alloc, @@ -1110,6 +1096,7 @@ static int is_firmware_flash_cmd(u8 *cdb) */ #define HEARTBEAT_SAMPLE_INTERVAL_DURING_FLASH (240 * HZ) #define HEARTBEAT_SAMPLE_INTERVAL (30 * HZ) +#define HPSA_EVENT_MONITOR_INTERVAL (15 * HZ) static void dial_down_lockup_detection_during_fw_flash(struct ctlr_info *h, struct CommandList *c) { @@ -1859,10 +1846,13 @@ static void adjust_hpsa_scsi_table(struct ctlr_info *h, * A reset can cause a device status to change * re-schedule the scan to see what happened. */ + spin_lock_irqsave(&h->reset_lock, flags); if (h->reset_in_progress) { h->drv_req_rescan = 1; + spin_unlock_irqrestore(&h->reset_lock, flags); return; } + spin_unlock_irqrestore(&h->reset_lock, flags); added = kzalloc(sizeof(*added) * HPSA_MAX_DEVICES, GFP_KERNEL); removed = kzalloc(sizeof(*removed) * HPSA_MAX_DEVICES, GFP_KERNEL); @@ -2066,10 +2056,13 @@ static int hpsa_slave_configure(struct scsi_device *sdev) sd = sdev->hostdata; sdev->no_uld_attach = !sd || !sd->expose_device; - if (sd) - queue_depth = sd->queue_depth != 0 ? - sd->queue_depth : sdev->host->can_queue; - else + if (sd) { + if (sd->external) + queue_depth = EXTERNAL_QD; + else + queue_depth = sd->queue_depth != 0 ? + sd->queue_depth : sdev->host->can_queue; + } else queue_depth = sdev->host->can_queue; scsi_change_queue_depth(sdev, queue_depth); @@ -2354,26 +2347,12 @@ static void hpsa_cmd_resolve_events(struct ctlr_info *h, bool do_wake = false; /* - * Prevent the following race in the abort handler: - * - * 1. LLD is requested to abort a SCSI command - * 2. The SCSI command completes - * 3. The struct CommandList associated with step 2 is made available - * 4. New I/O request to LLD to another LUN re-uses struct CommandList - * 5. Abort handler follows scsi_cmnd->host_scribble and - * finds struct CommandList and tries to aborts it - * Now we have aborted the wrong command. - * - * Reset c->scsi_cmd here so that the abort or reset handler will know + * Reset c->scsi_cmd here so that the reset handler will know * this command has completed. Then, check to see if the handler is * waiting for this command, and, if so, wake it. */ c->scsi_cmd = SCSI_CMD_IDLE; mb(); /* Declare command idle before checking for pending events. */ - if (c->abort_pending) { - do_wake = true; - c->abort_pending = false; - } if (c->reset_pending) { unsigned long flags; struct hpsa_scsi_dev_t *dev; @@ -2416,20 +2395,6 @@ static void hpsa_retry_cmd(struct ctlr_info *h, struct CommandList *c) queue_work_on(raw_smp_processor_id(), h->resubmit_wq, &c->work); } -static void hpsa_set_scsi_cmd_aborted(struct scsi_cmnd *cmd) -{ - cmd->result = DID_ABORT << 16; -} - -static void hpsa_cmd_abort_and_free(struct ctlr_info *h, struct CommandList *c, - struct scsi_cmnd *cmd) -{ - hpsa_set_scsi_cmd_aborted(cmd); - dev_warn(&h->pdev->dev, "CDB %16phN was aborted with status 0x%x\n", - c->Request.CDB, c->err_info->ScsiStatus); - hpsa_cmd_resolve_and_free(h, c); -} - static void process_ioaccel2_completion(struct ctlr_info *h, struct CommandList *c, struct scsi_cmnd *cmd, struct hpsa_scsi_dev_t *dev) @@ -2554,12 +2519,9 @@ static void complete_scsi_command(struct CommandList *cp) return hpsa_cmd_free_and_done(h, cp, cmd); } - if ((unlikely(hpsa_is_pending_event(cp)))) { + if ((unlikely(hpsa_is_pending_event(cp)))) if (cp->reset_pending) return hpsa_cmd_free_and_done(h, cp, cmd); - if (cp->abort_pending) - return hpsa_cmd_abort_and_free(h, cp, cmd); - } if (cp->cmd_type == CMD_IOACCEL2) return process_ioaccel2_completion(h, cp, cmd, dev); @@ -2679,8 +2641,8 @@ static void complete_scsi_command(struct CommandList *cp) cp->Request.CDB); break; case CMD_ABORTED: - /* Return now to avoid calling scsi_done(). */ - return hpsa_cmd_abort_and_free(h, cp, cmd); + cmd->result = DID_ABORT << 16; + break; case CMD_ABORT_FAILED: cmd->result = DID_ERROR << 16; dev_warn(&h->pdev->dev, "CDB %16phN : abort failed\n", @@ -3090,7 +3052,7 @@ static int hpsa_do_reset(struct ctlr_info *h, struct hpsa_scsi_dev_t *dev, if (unlikely(rc)) atomic_set(&dev->reset_cmds_out, 0); else - wait_for_device_to_become_ready(h, scsi3addr, 0); + rc = wait_for_device_to_become_ready(h, scsi3addr, 0); mutex_unlock(&h->reset_mutex); return rc; @@ -3353,6 +3315,11 @@ static void hpsa_get_enclosure_info(struct ctlr_info *h, bmic_device_index = GET_BMIC_DRIVE_NUMBER(&rle->lunid[0]); + if (encl_dev->target == -1 || encl_dev->lun == -1) { + rc = IO_OK; + goto out; + } + if (bmic_device_index == 0xFF00 || MASKED_DEVICE(&rle->lunid[0])) { rc = IO_OK; goto out; @@ -3781,53 +3748,6 @@ static unsigned char hpsa_volume_offline(struct ctlr_info *h, return HPSA_LV_OK; } -/* - * Find out if a logical device supports aborts by simply trying one. - * Smart Array may claim not to support aborts on logical drives, but - * if a MSA2000 * is connected, the drives on that will be presented - * by the Smart Array as logical drives, and aborts may be sent to - * those devices successfully. So the simplest way to find out is - * to simply try an abort and see how the device responds. - */ -static int hpsa_device_supports_aborts(struct ctlr_info *h, - unsigned char *scsi3addr) -{ - struct CommandList *c; - struct ErrorInfo *ei; - int rc = 0; - - u64 tag = (u64) -1; /* bogus tag */ - - /* Assume that physical devices support aborts */ - if (!is_logical_dev_addr_mode(scsi3addr)) - return 1; - - c = cmd_alloc(h); - - (void) fill_cmd(c, HPSA_ABORT_MSG, h, &tag, 0, 0, scsi3addr, TYPE_MSG); - (void) hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE, - DEFAULT_TIMEOUT); - /* no unmap needed here because no data xfer. */ - ei = c->err_info; - switch (ei->CommandStatus) { - case CMD_INVALID: - rc = 0; - break; - case CMD_UNABORTABLE: - case CMD_ABORT_FAILED: - rc = 1; - break; - case CMD_TMF_STATUS: - rc = hpsa_evaluate_tmf_status(h, c); - break; - default: - rc = 0; - break; - } - cmd_free(h, c); - return rc; -} - static int hpsa_update_device_info(struct ctlr_info *h, unsigned char scsi3addr[], struct hpsa_scsi_dev_t *this_device, unsigned char *is_OBDR_device) @@ -3907,6 +3827,9 @@ static int hpsa_update_device_info(struct ctlr_info *h, this_device->queue_depth = h->nr_cmds; } + if (this_device->external) + this_device->queue_depth = EXTERNAL_QD; + if (is_OBDR_device) { /* See if this is a One-Button-Disaster-Recovery device * by looking for "$DR-10" at offset 43 in inquiry data. @@ -3924,31 +3847,6 @@ bail_out: return rc; } -static void hpsa_update_device_supports_aborts(struct ctlr_info *h, - struct hpsa_scsi_dev_t *dev, u8 *scsi3addr) -{ - unsigned long flags; - int rc, entry; - /* - * See if this device supports aborts. If we already know - * the device, we already know if it supports aborts, otherwise - * we have to find out if it supports aborts by trying one. - */ - spin_lock_irqsave(&h->devlock, flags); - rc = hpsa_scsi_find_entry(dev, h->dev, h->ndevices, &entry); - if ((rc == DEVICE_SAME || rc == DEVICE_UPDATED) && - entry >= 0 && entry < h->ndevices) { - dev->supports_aborts = h->dev[entry]->supports_aborts; - spin_unlock_irqrestore(&h->devlock, flags); - } else { - spin_unlock_irqrestore(&h->devlock, flags); - dev->supports_aborts = - hpsa_device_supports_aborts(h, scsi3addr); - if (dev->supports_aborts < 0) - dev->supports_aborts = 0; - } -} - /* * Helper function to assign bus, target, lun mapping of devices. * Logical drive target and lun are assigned at this time, but @@ -3986,35 +3884,6 @@ static void figure_bus_target_lun(struct ctlr_info *h, 0, lunid & 0x3fff); } - -/* - * Get address of physical disk used for an ioaccel2 mode command: - * 1. Extract ioaccel2 handle from the command. - * 2. Find a matching ioaccel2 handle from list of physical disks. - * 3. Return: - * 1 and set scsi3addr to address of matching physical - * 0 if no matching physical disk was found. - */ -static int hpsa_get_pdisk_of_ioaccel2(struct ctlr_info *h, - struct CommandList *ioaccel2_cmd_to_abort, unsigned char *scsi3addr) -{ - struct io_accel2_cmd *c2 = - &h->ioaccel2_cmd_pool[ioaccel2_cmd_to_abort->cmdindex]; - unsigned long flags; - int i; - - spin_lock_irqsave(&h->devlock, flags); - for (i = 0; i < h->ndevices; i++) - if (h->dev[i]->ioaccel_handle == le32_to_cpu(c2->scsi_nexus)) { - memcpy(scsi3addr, h->dev[i]->scsi3addr, - sizeof(h->dev[i]->scsi3addr)); - spin_unlock_irqrestore(&h->devlock, flags); - return 1; - } - spin_unlock_irqrestore(&h->devlock, flags); - return 0; -} - static int figure_external_status(struct ctlr_info *h, int raid_ctlr_position, int i, int nphysicals, int nlocal_logicals) { @@ -4115,14 +3984,6 @@ static void hpsa_get_ioaccel_drive_info(struct ctlr_info *h, int rc; struct ext_report_lun_entry *rle; - /* - * external targets don't support BMIC - */ - if (dev->external) { - dev->queue_depth = 7; - return; - } - rle = &rlep->LUN[rle_index]; dev->ioaccel_handle = rle->ioaccel_handle; @@ -4387,7 +4248,6 @@ static void hpsa_update_scsi_devices(struct ctlr_info *h) } figure_bus_target_lun(h, lunaddrbytes, tmpdevice); - hpsa_update_device_supports_aborts(h, tmpdevice, lunaddrbytes); this_device = currentsd[ncurrent]; /* Turn on discovery_polling if there are ext target devices. @@ -4584,7 +4444,55 @@ sglist_finished: return 0; } -#define IO_ACCEL_INELIGIBLE (1) +#define BUFLEN 128 +static inline void warn_zero_length_transfer(struct ctlr_info *h, + u8 *cdb, int cdb_len, + const char *func) +{ + char buf[BUFLEN]; + int outlen; + int i; + + outlen = scnprintf(buf, BUFLEN, + "%s: Blocking zero-length request: CDB:", func); + for (i = 0; i < cdb_len; i++) + outlen += scnprintf(buf+outlen, BUFLEN - outlen, + "%02hhx", cdb[i]); + dev_warn(&h->pdev->dev, "%s\n", buf); +} + +#define IO_ACCEL_INELIGIBLE 1 +/* zero-length transfers trigger hardware errors. */ +static bool is_zero_length_transfer(u8 *cdb) +{ + u32 block_cnt; + + /* Block zero-length transfer sizes on certain commands. */ + switch (cdb[0]) { + case READ_10: + case WRITE_10: + case VERIFY: /* 0x2F */ + case WRITE_VERIFY: /* 0x2E */ + block_cnt = get_unaligned_be16(&cdb[7]); + break; + case READ_12: + case WRITE_12: + case VERIFY_12: /* 0xAF */ + case WRITE_VERIFY_12: /* 0xAE */ + block_cnt = get_unaligned_be32(&cdb[6]); + break; + case READ_16: + case WRITE_16: + case VERIFY_16: /* 0x8F */ + block_cnt = get_unaligned_be32(&cdb[10]); + break; + default: + return false; + } + + return block_cnt == 0; +} + static int fixup_ioaccel_cdb(u8 *cdb, int *cdb_len) { int is_write = 0; @@ -4651,6 +4559,12 @@ static int hpsa_scsi_ioaccel1_queue_command(struct ctlr_info *h, BUG_ON(cmd->cmd_len > IOACCEL1_IOFLAGS_CDBLEN_MAX); + if (is_zero_length_transfer(cdb)) { + warn_zero_length_transfer(h, cdb, cdb_len, __func__); + atomic_dec(&phys_disk->ioaccel_cmds_out); + return IO_ACCEL_INELIGIBLE; + } + if (fixup_ioaccel_cdb(cdb, &cdb_len)) { atomic_dec(&phys_disk->ioaccel_cmds_out); return IO_ACCEL_INELIGIBLE; @@ -4815,6 +4729,12 @@ static int hpsa_scsi_ioaccel2_queue_command(struct ctlr_info *h, BUG_ON(scsi_sg_count(cmd) > h->maxsgentries); + if (is_zero_length_transfer(cdb)) { + warn_zero_length_transfer(h, cdb, cdb_len, __func__); + atomic_dec(&phys_disk->ioaccel_cmds_out); + return IO_ACCEL_INELIGIBLE; + } + if (fixup_ioaccel_cdb(cdb, &cdb_len)) { atomic_dec(&phys_disk->ioaccel_cmds_out); return IO_ACCEL_INELIGIBLE; @@ -5460,9 +5380,7 @@ static void hpsa_command_resubmit_worker(struct work_struct *work) return hpsa_cmd_free_and_done(c->h, c, cmd); } if (c->reset_pending) - return hpsa_cmd_resolve_and_free(c->h, c); - if (c->abort_pending) - return hpsa_cmd_abort_and_free(c->h, c, cmd); + return hpsa_cmd_free_and_done(c->h, c, cmd); if (c->cmd_type == CMD_IOACCEL2) { struct ctlr_info *h = c->h; struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex]; @@ -5613,10 +5531,14 @@ static void hpsa_scan_start(struct Scsi_Host *sh) /* * Do the scan after a reset completion */ + spin_lock_irqsave(&h->reset_lock, flags); if (h->reset_in_progress) { h->drv_req_rescan = 1; + spin_unlock_irqrestore(&h->reset_lock, flags); + hpsa_scan_complete(h); return; } + spin_unlock_irqrestore(&h->reset_lock, flags); hpsa_update_scsi_devices(h); @@ -5828,24 +5750,37 @@ static int wait_for_device_to_become_ready(struct ctlr_info *h, */ static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd) { - int rc; + int rc = SUCCESS; struct ctlr_info *h; struct hpsa_scsi_dev_t *dev; u8 reset_type; char msg[48]; + unsigned long flags; /* find the controller to which the command to be aborted was sent */ h = sdev_to_hba(scsicmd->device); if (h == NULL) /* paranoia */ return FAILED; - if (lockup_detected(h)) - return FAILED; + spin_lock_irqsave(&h->reset_lock, flags); + h->reset_in_progress = 1; + spin_unlock_irqrestore(&h->reset_lock, flags); + + if (lockup_detected(h)) { + rc = FAILED; + goto return_reset_status; + } dev = scsicmd->device->hostdata; if (!dev) { dev_err(&h->pdev->dev, "%s: device lookup failed\n", __func__); - return FAILED; + rc = FAILED; + goto return_reset_status; + } + + if (dev->devtype == TYPE_ENCLOSURE) { + rc = SUCCESS; + goto return_reset_status; } /* if controller locked up, we can guarantee command won't complete */ @@ -5854,7 +5789,8 @@ static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd) "cmd %d RESET FAILED, lockup detected", hpsa_get_cmd_index(scsicmd)); hpsa_show_dev_msg(KERN_WARNING, h, dev, msg); - return FAILED; + rc = FAILED; + goto return_reset_status; } /* this reset request might be the result of a lockup; check */ @@ -5863,12 +5799,15 @@ static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd) "cmd %d RESET FAILED, new lockup detected", hpsa_get_cmd_index(scsicmd)); hpsa_show_dev_msg(KERN_WARNING, h, dev, msg); - return FAILED; + rc = FAILED; + goto return_reset_status; } /* Do not attempt on controller */ - if (is_hba_lunid(dev->scsi3addr)) - return SUCCESS; + if (is_hba_lunid(dev->scsi3addr)) { + rc = SUCCESS; + goto return_reset_status; + } if (is_logical_dev_addr_mode(dev->scsi3addr)) reset_type = HPSA_DEVICE_RESET_MSG; @@ -5879,446 +5818,26 @@ static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd) reset_type == HPSA_DEVICE_RESET_MSG ? "logical " : "physical "); hpsa_show_dev_msg(KERN_WARNING, h, dev, msg); - h->reset_in_progress = 1; - /* send a reset to the SCSI LUN which the command was sent to */ rc = hpsa_do_reset(h, dev, dev->scsi3addr, reset_type, DEFAULT_REPLY_QUEUE); + if (rc == 0) + rc = SUCCESS; + else + rc = FAILED; + sprintf(msg, "reset %s %s", reset_type == HPSA_DEVICE_RESET_MSG ? "logical " : "physical ", - rc == 0 ? "completed successfully" : "failed"); + rc == SUCCESS ? "completed successfully" : "failed"); hpsa_show_dev_msg(KERN_WARNING, h, dev, msg); - h->reset_in_progress = 0; - return rc == 0 ? SUCCESS : FAILED; -} - -static void swizzle_abort_tag(u8 *tag) -{ - u8 original_tag[8]; - - memcpy(original_tag, tag, 8); - tag[0] = original_tag[3]; - tag[1] = original_tag[2]; - tag[2] = original_tag[1]; - tag[3] = original_tag[0]; - tag[4] = original_tag[7]; - tag[5] = original_tag[6]; - tag[6] = original_tag[5]; - tag[7] = original_tag[4]; -} - -static void hpsa_get_tag(struct ctlr_info *h, - struct CommandList *c, __le32 *taglower, __le32 *tagupper) -{ - u64 tag; - if (c->cmd_type == CMD_IOACCEL1) { - struct io_accel1_cmd *cm1 = (struct io_accel1_cmd *) - &h->ioaccel_cmd_pool[c->cmdindex]; - tag = le64_to_cpu(cm1->tag); - *tagupper = cpu_to_le32(tag >> 32); - *taglower = cpu_to_le32(tag); - return; - } - if (c->cmd_type == CMD_IOACCEL2) { - struct io_accel2_cmd *cm2 = (struct io_accel2_cmd *) - &h->ioaccel2_cmd_pool[c->cmdindex]; - /* upper tag not used in ioaccel2 mode */ - memset(tagupper, 0, sizeof(*tagupper)); - *taglower = cm2->Tag; - return; - } - tag = le64_to_cpu(c->Header.tag); - *tagupper = cpu_to_le32(tag >> 32); - *taglower = cpu_to_le32(tag); -} - -static int hpsa_send_abort(struct ctlr_info *h, unsigned char *scsi3addr, - struct CommandList *abort, int reply_queue) -{ - int rc = IO_OK; - struct CommandList *c; - struct ErrorInfo *ei; - __le32 tagupper, taglower; - - c = cmd_alloc(h); - - /* fill_cmd can't fail here, no buffer to map */ - (void) fill_cmd(c, HPSA_ABORT_MSG, h, &abort->Header.tag, - 0, 0, scsi3addr, TYPE_MSG); - if (h->needs_abort_tags_swizzled) - swizzle_abort_tag(&c->Request.CDB[4]); - (void) hpsa_scsi_do_simple_cmd(h, c, reply_queue, DEFAULT_TIMEOUT); - hpsa_get_tag(h, abort, &taglower, &tagupper); - dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: do_simple_cmd(abort) completed.\n", - __func__, tagupper, taglower); - /* no unmap needed here because no data xfer. */ - - ei = c->err_info; - switch (ei->CommandStatus) { - case CMD_SUCCESS: - break; - case CMD_TMF_STATUS: - rc = hpsa_evaluate_tmf_status(h, c); - break; - case CMD_UNABORTABLE: /* Very common, don't make noise. */ - rc = -1; - break; - default: - dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: interpreting error.\n", - __func__, tagupper, taglower); - hpsa_scsi_interpret_error(h, c); - rc = -1; - break; - } - cmd_free(h, c); - dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: Finished.\n", - __func__, tagupper, taglower); - return rc; -} - -static void setup_ioaccel2_abort_cmd(struct CommandList *c, struct ctlr_info *h, - struct CommandList *command_to_abort, int reply_queue) -{ - struct io_accel2_cmd *c2 = &h->ioaccel2_cmd_pool[c->cmdindex]; - struct hpsa_tmf_struct *ac = (struct hpsa_tmf_struct *) c2; - struct io_accel2_cmd *c2a = - &h->ioaccel2_cmd_pool[command_to_abort->cmdindex]; - struct scsi_cmnd *scmd = command_to_abort->scsi_cmd; - struct hpsa_scsi_dev_t *dev = scmd->device->hostdata; - if (!dev) - return; - - /* - * We're overlaying struct hpsa_tmf_struct on top of something which - * was allocated as a struct io_accel2_cmd, so we better be sure it - * actually fits, and doesn't overrun the error info space. - */ - BUILD_BUG_ON(sizeof(struct hpsa_tmf_struct) > - sizeof(struct io_accel2_cmd)); - BUG_ON(offsetof(struct io_accel2_cmd, error_data) < - offsetof(struct hpsa_tmf_struct, error_len) + - sizeof(ac->error_len)); - - c->cmd_type = IOACCEL2_TMF; - c->scsi_cmd = SCSI_CMD_BUSY; - - /* Adjust the DMA address to point to the accelerated command buffer */ - c->busaddr = (u32) h->ioaccel2_cmd_pool_dhandle + - (c->cmdindex * sizeof(struct io_accel2_cmd)); - BUG_ON(c->busaddr & 0x0000007F); - - memset(ac, 0, sizeof(*c2)); /* yes this is correct */ - ac->iu_type = IOACCEL2_IU_TMF_TYPE; - ac->reply_queue = reply_queue; - ac->tmf = IOACCEL2_TMF_ABORT; - ac->it_nexus = cpu_to_le32(dev->ioaccel_handle); - memset(ac->lun_id, 0, sizeof(ac->lun_id)); - ac->tag = cpu_to_le64(c->cmdindex << DIRECT_LOOKUP_SHIFT); - ac->abort_tag = cpu_to_le64(le32_to_cpu(c2a->Tag)); - ac->error_ptr = cpu_to_le64(c->busaddr + - offsetof(struct io_accel2_cmd, error_data)); - ac->error_len = cpu_to_le32(sizeof(c2->error_data)); -} - -/* ioaccel2 path firmware cannot handle abort task requests. - * Change abort requests to physical target reset, and send to the - * address of the physical disk used for the ioaccel 2 command. - * Return 0 on success (IO_OK) - * -1 on failure - */ - -static int hpsa_send_reset_as_abort_ioaccel2(struct ctlr_info *h, - unsigned char *scsi3addr, struct CommandList *abort, int reply_queue) -{ - int rc = IO_OK; - struct scsi_cmnd *scmd; /* scsi command within request being aborted */ - struct hpsa_scsi_dev_t *dev; /* device to which scsi cmd was sent */ - unsigned char phys_scsi3addr[8]; /* addr of phys disk with volume */ - unsigned char *psa = &phys_scsi3addr[0]; - - /* Get a pointer to the hpsa logical device. */ - scmd = abort->scsi_cmd; - dev = (struct hpsa_scsi_dev_t *)(scmd->device->hostdata); - if (dev == NULL) { - dev_warn(&h->pdev->dev, - "Cannot abort: no device pointer for command.\n"); - return -1; /* not abortable */ - } - - if (h->raid_offload_debug > 0) - dev_info(&h->pdev->dev, - "scsi %d:%d:%d:%d %s scsi3addr 0x%8phN\n", - h->scsi_host->host_no, dev->bus, dev->target, dev->lun, - "Reset as abort", scsi3addr); - - if (!dev->offload_enabled) { - dev_warn(&h->pdev->dev, - "Can't abort: device is not operating in HP SSD Smart Path mode.\n"); - return -1; /* not abortable */ - } - - /* Incoming scsi3addr is logical addr. We need physical disk addr. */ - if (!hpsa_get_pdisk_of_ioaccel2(h, abort, psa)) { - dev_warn(&h->pdev->dev, "Can't abort: Failed lookup of physical address.\n"); - return -1; /* not abortable */ - } - - /* send the reset */ - if (h->raid_offload_debug > 0) - dev_info(&h->pdev->dev, - "Reset as abort: Resetting physical device at scsi3addr 0x%8phN\n", - psa); - rc = hpsa_do_reset(h, dev, psa, HPSA_PHYS_TARGET_RESET, reply_queue); - if (rc != 0) { - dev_warn(&h->pdev->dev, - "Reset as abort: Failed on physical device at scsi3addr 0x%8phN\n", - psa); - return rc; /* failed to reset */ - } - - /* wait for device to recover */ - if (wait_for_device_to_become_ready(h, psa, reply_queue) != 0) { - dev_warn(&h->pdev->dev, - "Reset as abort: Failed: Device never recovered from reset: 0x%8phN\n", - psa); - return -1; /* failed to recover */ - } - - /* device recovered */ - dev_info(&h->pdev->dev, - "Reset as abort: Device recovered from reset: scsi3addr 0x%8phN\n", - psa); - - return rc; /* success */ -} - -static int hpsa_send_abort_ioaccel2(struct ctlr_info *h, - struct CommandList *abort, int reply_queue) -{ - int rc = IO_OK; - struct CommandList *c; - __le32 taglower, tagupper; - struct hpsa_scsi_dev_t *dev; - struct io_accel2_cmd *c2; - - dev = abort->scsi_cmd->device->hostdata; - if (!dev) - return -1; - - if (!dev->offload_enabled && !dev->hba_ioaccel_enabled) - return -1; - - c = cmd_alloc(h); - setup_ioaccel2_abort_cmd(c, h, abort, reply_queue); - c2 = &h->ioaccel2_cmd_pool[c->cmdindex]; - (void) hpsa_scsi_do_simple_cmd(h, c, reply_queue, DEFAULT_TIMEOUT); - hpsa_get_tag(h, abort, &taglower, &tagupper); - dev_dbg(&h->pdev->dev, - "%s: Tag:0x%08x:%08x: do_simple_cmd(ioaccel2 abort) completed.\n", - __func__, tagupper, taglower); - /* no unmap needed here because no data xfer. */ - - dev_dbg(&h->pdev->dev, - "%s: Tag:0x%08x:%08x: abort service response = 0x%02x.\n", - __func__, tagupper, taglower, c2->error_data.serv_response); - switch (c2->error_data.serv_response) { - case IOACCEL2_SERV_RESPONSE_TMF_COMPLETE: - case IOACCEL2_SERV_RESPONSE_TMF_SUCCESS: - rc = 0; - break; - case IOACCEL2_SERV_RESPONSE_TMF_REJECTED: - case IOACCEL2_SERV_RESPONSE_FAILURE: - case IOACCEL2_SERV_RESPONSE_TMF_WRONG_LUN: - rc = -1; - break; - default: - dev_warn(&h->pdev->dev, - "%s: Tag:0x%08x:%08x: unknown abort service response 0x%02x\n", - __func__, tagupper, taglower, - c2->error_data.serv_response); - rc = -1; - } - cmd_free(h, c); - dev_dbg(&h->pdev->dev, "%s: Tag:0x%08x:%08x: Finished.\n", __func__, - tagupper, taglower); +return_reset_status: + spin_lock_irqsave(&h->reset_lock, flags); + h->reset_in_progress = 0; + spin_unlock_irqrestore(&h->reset_lock, flags); return rc; } -static int hpsa_send_abort_both_ways(struct ctlr_info *h, - struct hpsa_scsi_dev_t *dev, struct CommandList *abort, int reply_queue) -{ - /* - * ioccelerator mode 2 commands should be aborted via the - * accelerated path, since RAID path is unaware of these commands, - * but not all underlying firmware can handle abort TMF. - * Change abort to physical device reset when abort TMF is unsupported. - */ - if (abort->cmd_type == CMD_IOACCEL2) { - if ((HPSATMF_IOACCEL_ENABLED & h->TMFSupportFlags) || - dev->physical_device) - return hpsa_send_abort_ioaccel2(h, abort, - reply_queue); - else - return hpsa_send_reset_as_abort_ioaccel2(h, - dev->scsi3addr, - abort, reply_queue); - } - return hpsa_send_abort(h, dev->scsi3addr, abort, reply_queue); -} - -/* Find out which reply queue a command was meant to return on */ -static int hpsa_extract_reply_queue(struct ctlr_info *h, - struct CommandList *c) -{ - if (c->cmd_type == CMD_IOACCEL2) - return h->ioaccel2_cmd_pool[c->cmdindex].reply_queue; - return c->Header.ReplyQueue; -} - -/* - * Limit concurrency of abort commands to prevent - * over-subscription of commands - */ -static inline int wait_for_available_abort_cmd(struct ctlr_info *h) -{ -#define ABORT_CMD_WAIT_MSECS 5000 - return !wait_event_timeout(h->abort_cmd_wait_queue, - atomic_dec_if_positive(&h->abort_cmds_available) >= 0, - msecs_to_jiffies(ABORT_CMD_WAIT_MSECS)); -} - -/* Send an abort for the specified command. - * If the device and controller support it, - * send a task abort request. - */ -static int hpsa_eh_abort_handler(struct scsi_cmnd *sc) -{ - - int rc; - struct ctlr_info *h; - struct hpsa_scsi_dev_t *dev; - struct CommandList *abort; /* pointer to command to be aborted */ - struct scsi_cmnd *as; /* ptr to scsi cmd inside aborted command. */ - char msg[256]; /* For debug messaging. */ - int ml = 0; - __le32 tagupper, taglower; - int refcount, reply_queue; - - if (sc == NULL) - return FAILED; - - if (sc->device == NULL) - return FAILED; - - /* Find the controller of the command to be aborted */ - h = sdev_to_hba(sc->device); - if (h == NULL) - return FAILED; - - /* Find the device of the command to be aborted */ - dev = sc->device->hostdata; - if (!dev) { - dev_err(&h->pdev->dev, "%s FAILED, Device lookup failed.\n", - msg); - return FAILED; - } - - /* If controller locked up, we can guarantee command won't complete */ - if (lockup_detected(h)) { - hpsa_show_dev_msg(KERN_WARNING, h, dev, - "ABORT FAILED, lockup detected"); - return FAILED; - } - - /* This is a good time to check if controller lockup has occurred */ - if (detect_controller_lockup(h)) { - hpsa_show_dev_msg(KERN_WARNING, h, dev, - "ABORT FAILED, new lockup detected"); - return FAILED; - } - - /* Check that controller supports some kind of task abort */ - if (!(HPSATMF_PHYS_TASK_ABORT & h->TMFSupportFlags) && - !(HPSATMF_LOG_TASK_ABORT & h->TMFSupportFlags)) - return FAILED; - - memset(msg, 0, sizeof(msg)); - ml += sprintf(msg+ml, "scsi %d:%d:%d:%llu %s %p", - h->scsi_host->host_no, sc->device->channel, - sc->device->id, sc->device->lun, - "Aborting command", sc); - - /* Get SCSI command to be aborted */ - abort = (struct CommandList *) sc->host_scribble; - if (abort == NULL) { - /* This can happen if the command already completed. */ - return SUCCESS; - } - refcount = atomic_inc_return(&abort->refcount); - if (refcount == 1) { /* Command is done already. */ - cmd_free(h, abort); - return SUCCESS; - } - - /* Don't bother trying the abort if we know it won't work. */ - if (abort->cmd_type != CMD_IOACCEL2 && - abort->cmd_type != CMD_IOACCEL1 && !dev->supports_aborts) { - cmd_free(h, abort); - return FAILED; - } - - /* - * Check that we're aborting the right command. - * It's possible the CommandList already completed and got re-used. - */ - if (abort->scsi_cmd != sc) { - cmd_free(h, abort); - return SUCCESS; - } - - abort->abort_pending = true; - hpsa_get_tag(h, abort, &taglower, &tagupper); - reply_queue = hpsa_extract_reply_queue(h, abort); - ml += sprintf(msg+ml, "Tag:0x%08x:%08x ", tagupper, taglower); - as = abort->scsi_cmd; - if (as != NULL) - ml += sprintf(msg+ml, - "CDBLen: %d CDB: 0x%02x%02x... SN: 0x%lx ", - as->cmd_len, as->cmnd[0], as->cmnd[1], - as->serial_number); - dev_warn(&h->pdev->dev, "%s BEING SENT\n", msg); - hpsa_show_dev_msg(KERN_WARNING, h, dev, "Aborting command"); - - /* - * Command is in flight, or possibly already completed - * by the firmware (but not to the scsi mid layer) but we can't - * distinguish which. Send the abort down. - */ - if (wait_for_available_abort_cmd(h)) { - dev_warn(&h->pdev->dev, - "%s FAILED, timeout waiting for an abort command to become available.\n", - msg); - cmd_free(h, abort); - return FAILED; - } - rc = hpsa_send_abort_both_ways(h, dev, abort, reply_queue); - atomic_inc(&h->abort_cmds_available); - wake_up_all(&h->abort_cmd_wait_queue); - if (rc != 0) { - dev_warn(&h->pdev->dev, "%s SENT, FAILED\n", msg); - hpsa_show_dev_msg(KERN_WARNING, h, dev, - "FAILED to abort command"); - cmd_free(h, abort); - return FAILED; - } - dev_info(&h->pdev->dev, "%s SENT, SUCCESS\n", msg); - wait_event(h->event_sync_wait_queue, - abort->scsi_cmd != sc || lockup_detected(h)); - cmd_free(h, abort); - return !lockup_detected(h) ? SUCCESS : FAILED; -} - /* * For operations with an associated SCSI command, a command block is allocated * at init, and managed by cmd_tagged_alloc() and cmd_tagged_free() using the @@ -6364,9 +5883,7 @@ static void cmd_tagged_free(struct ctlr_info *h, struct CommandList *c) { /* * Release our reference to the block. We don't need to do anything - * else to free it, because it is accessed by index. (There's no point - * in checking the result of the decrement, since we cannot guarantee - * that there isn't a concurrent abort which is also accessing it.) + * else to free it, because it is accessed by index. */ (void)atomic_dec(&c->refcount); } @@ -6905,7 +6422,6 @@ static int fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h, int cmd_type) { int pci_dir = XFER_NONE; - u64 tag; /* for commands to be aborted */ c->cmd_type = CMD_IOCTL_PEND; c->scsi_cmd = SCSI_CMD_BUSY; @@ -7089,27 +6605,6 @@ static int fill_cmd(struct CommandList *c, u8 cmd, struct ctlr_info *h, c->Request.CDB[6] = 0x00; c->Request.CDB[7] = 0x00; break; - case HPSA_ABORT_MSG: - memcpy(&tag, buff, sizeof(tag)); - dev_dbg(&h->pdev->dev, - "Abort Tag:0x%016llx using rqst Tag:0x%016llx", - tag, c->Header.tag); - c->Request.CDBLen = 16; - c->Request.type_attr_dir = - TYPE_ATTR_DIR(cmd_type, - ATTR_SIMPLE, XFER_WRITE); - c->Request.Timeout = 0; /* Don't time out */ - c->Request.CDB[0] = HPSA_TASK_MANAGEMENT; - c->Request.CDB[1] = HPSA_TMF_ABORT_TASK; - c->Request.CDB[2] = 0x00; /* reserved */ - c->Request.CDB[3] = 0x00; /* reserved */ - /* Tag to abort goes in CDB[4]-CDB[11] */ - memcpy(&c->Request.CDB[4], &tag, sizeof(tag)); - c->Request.CDB[12] = 0x00; /* reserved */ - c->Request.CDB[13] = 0x00; /* reserved */ - c->Request.CDB[14] = 0x00; /* reserved */ - c->Request.CDB[15] = 0x00; /* reserved */ - break; default: dev_warn(&h->pdev->dev, "unknown message type %d\n", cmd); @@ -8067,9 +7562,6 @@ static int hpsa_pci_init(struct ctlr_info *h) h->product_name = products[prod_index].product_name; h->access = *(products[prod_index].access); - h->needs_abort_tags_swizzled = - ctlr_needs_abort_tags_swizzled(h->board_id); - pci_disable_link_state(h->pdev, PCIE_LINK_STATE_L0S | PCIE_LINK_STATE_L1 | PCIE_LINK_STATE_CLKPM); @@ -8627,41 +8119,79 @@ out: return rc; } -static void hpsa_rescan_ctlr_worker(struct work_struct *work) +static void hpsa_perform_rescan(struct ctlr_info *h) { + struct Scsi_Host *sh = NULL; unsigned long flags; - struct ctlr_info *h = container_of(to_delayed_work(work), - struct ctlr_info, rescan_ctlr_work); - - - if (h->remove_in_progress) - return; /* * Do the scan after the reset */ + spin_lock_irqsave(&h->reset_lock, flags); if (h->reset_in_progress) { h->drv_req_rescan = 1; + spin_unlock_irqrestore(&h->reset_lock, flags); return; } + spin_unlock_irqrestore(&h->reset_lock, flags); + + sh = scsi_host_get(h->scsi_host); + if (sh != NULL) { + hpsa_scan_start(sh); + scsi_host_put(sh); + h->drv_req_rescan = 0; + } +} + +/* + * watch for controller events + */ +static void hpsa_event_monitor_worker(struct work_struct *work) +{ + struct ctlr_info *h = container_of(to_delayed_work(work), + struct ctlr_info, event_monitor_work); + unsigned long flags; + + spin_lock_irqsave(&h->lock, flags); + if (h->remove_in_progress) { + spin_unlock_irqrestore(&h->lock, flags); + return; + } + spin_unlock_irqrestore(&h->lock, flags); - if (hpsa_ctlr_needs_rescan(h) || hpsa_offline_devices_ready(h)) { - scsi_host_get(h->scsi_host); + if (hpsa_ctlr_needs_rescan(h)) { hpsa_ack_ctlr_events(h); - hpsa_scan_start(h->scsi_host); - scsi_host_put(h->scsi_host); + hpsa_perform_rescan(h); + } + + spin_lock_irqsave(&h->lock, flags); + if (!h->remove_in_progress) + schedule_delayed_work(&h->event_monitor_work, + HPSA_EVENT_MONITOR_INTERVAL); + spin_unlock_irqrestore(&h->lock, flags); +} + +static void hpsa_rescan_ctlr_worker(struct work_struct *work) +{ + unsigned long flags; + struct ctlr_info *h = container_of(to_delayed_work(work), + struct ctlr_info, rescan_ctlr_work); + + spin_lock_irqsave(&h->lock, flags); + if (h->remove_in_progress) { + spin_unlock_irqrestore(&h->lock, flags); + return; + } + spin_unlock_irqrestore(&h->lock, flags); + + if (h->drv_req_rescan || hpsa_offline_devices_ready(h)) { + hpsa_perform_rescan(h); } else if (h->discovery_polling) { hpsa_disable_rld_caching(h); if (hpsa_luns_changed(h)) { - struct Scsi_Host *sh = NULL; - dev_info(&h->pdev->dev, "driver discovery polling rescan.\n"); - sh = scsi_host_get(h->scsi_host); - if (sh != NULL) { - hpsa_scan_start(sh); - scsi_host_put(sh); - } + hpsa_perform_rescan(h); } } spin_lock_irqsave(&h->lock, flags); @@ -8750,8 +8280,8 @@ reinit_after_soft_reset: spin_lock_init(&h->lock); spin_lock_init(&h->offline_device_lock); spin_lock_init(&h->scan_lock); + spin_lock_init(&h->reset_lock); atomic_set(&h->passthru_cmds_avail, HPSA_MAX_CONCURRENT_PASSTHRUS); - atomic_set(&h->abort_cmds_available, HPSA_CMDS_RESERVED_FOR_ABORTS); /* Allocate and clear per-cpu variable lockup_detected */ h->lockup_detected = alloc_percpu(u32); @@ -8803,7 +8333,6 @@ reinit_after_soft_reset: if (rc) goto clean5; /* cmd, irq, shost, pci, lu, aer/h */ init_waitqueue_head(&h->scan_wait_queue); - init_waitqueue_head(&h->abort_cmd_wait_queue); init_waitqueue_head(&h->event_sync_wait_queue); mutex_init(&h->reset_mutex); h->scan_finished = 1; /* no scan currently in progress */ @@ -8926,6 +8455,9 @@ reinit_after_soft_reset: INIT_DELAYED_WORK(&h->rescan_ctlr_work, hpsa_rescan_ctlr_worker); queue_delayed_work(h->rescan_ctlr_wq, &h->rescan_ctlr_work, h->heartbeat_sample_interval); + INIT_DELAYED_WORK(&h->event_monitor_work, hpsa_event_monitor_worker); + schedule_delayed_work(&h->event_monitor_work, + HPSA_EVENT_MONITOR_INTERVAL); return 0; clean7: /* perf, sg, cmd, irq, shost, pci, lu, aer/h */ @@ -9094,6 +8626,7 @@ static void hpsa_remove_one(struct pci_dev *pdev) spin_unlock_irqrestore(&h->lock, flags); cancel_delayed_work_sync(&h->monitor_ctlr_work); cancel_delayed_work_sync(&h->rescan_ctlr_work); + cancel_delayed_work_sync(&h->event_monitor_work); destroy_workqueue(h->rescan_ctlr_wq); destroy_workqueue(h->resubmit_wq); |