diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index 11966f90c895e23cc4660edfa7d5eae45d552dcf..6e1d5f6f68a90477bd603b160f4fac0656f6eabc 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -4787,51 +4787,108 @@ static int hpsa_register_scsi(struct ctlr_info *h) return -ENOMEM; } -static int wait_for_device_to_become_ready(struct ctlr_info *h, - unsigned char lunaddr[]) +/* + * Send a TEST_UNIT_READY command to the specified LUN using the specified + * reply queue; returns zero if the unit is ready, and non-zero otherwise. + */ +static int hpsa_send_test_unit_ready(struct ctlr_info *h, + struct CommandList *c, unsigned char lunaddr[], + int reply_queue) +{ + int rc; + + /* Send the Test Unit Ready, fill_cmd can't fail, no mapping */ + (void) fill_cmd(c, TEST_UNIT_READY, h, + NULL, 0, 0, lunaddr, TYPE_CMD); + rc = hpsa_scsi_do_simple_cmd(h, c, reply_queue, NO_TIMEOUT); + if (rc) + return rc; + /* no unmap needed here because no data xfer. */ + + /* Check if the unit is already ready. */ + if (c->err_info->CommandStatus == CMD_SUCCESS) + return 0; + + /* + * The first command sent after reset will receive "unit attention" to + * indicate that the LUN has been reset...this is actually what we're + * looking for (but, success is good too). + */ + if (c->err_info->CommandStatus == CMD_TARGET_STATUS && + c->err_info->ScsiStatus == SAM_STAT_CHECK_CONDITION && + (c->err_info->SenseInfo[2] == NO_SENSE || + c->err_info->SenseInfo[2] == UNIT_ATTENTION)) + return 0; + + return 1; +} + +/* + * Wait for a TEST_UNIT_READY command to complete, retrying as necessary; + * returns zero when the unit is ready, and non-zero when giving up. + */ +static int hpsa_wait_for_test_unit_ready(struct ctlr_info *h, + struct CommandList *c, + unsigned char lunaddr[], int reply_queue) { int rc; int count = 0; int waittime = 1; /* seconds */ - struct CommandList *c; - - c = cmd_alloc(h); /* Send test unit ready until device ready, or give up. */ - while (count < HPSA_TUR_RETRY_LIMIT) { + for (count = 0; count < HPSA_TUR_RETRY_LIMIT; count++) { - /* Wait for a bit. do this first, because if we send + /* + * Wait for a bit. do this first, because if we send * the TUR right away, the reset will just abort it. */ msleep(1000 * waittime); - count++; - rc = 0; /* Device ready. */ + + rc = hpsa_send_test_unit_ready(h, c, lunaddr, reply_queue); + if (!rc) + break; /* Increase wait time with each try, up to a point. */ if (waittime < HPSA_MAX_WAIT_INTERVAL_SECS) - waittime = waittime * 2; + waittime *= 2; - /* Send the Test Unit Ready, fill_cmd can't fail, no mapping */ - (void) fill_cmd(c, TEST_UNIT_READY, h, - NULL, 0, 0, lunaddr, TYPE_CMD); - rc = hpsa_scsi_do_simple_cmd(h, c, DEFAULT_REPLY_QUEUE, - NO_TIMEOUT); - if (rc) - goto do_it_again; - /* no unmap needed here because no data xfer. */ + dev_warn(&h->pdev->dev, + "waiting %d secs for device to become ready.\n", + waittime); + } - if (c->err_info->CommandStatus == CMD_SUCCESS) - break; + return rc; +} - if (c->err_info->CommandStatus == CMD_TARGET_STATUS && - c->err_info->ScsiStatus == SAM_STAT_CHECK_CONDITION && - (c->err_info->SenseInfo[2] == NO_SENSE || - c->err_info->SenseInfo[2] == UNIT_ATTENTION)) +static int wait_for_device_to_become_ready(struct ctlr_info *h, + unsigned char lunaddr[], + int reply_queue) +{ + int first_queue; + int last_queue; + int rq; + int rc = 0; + struct CommandList *c; + + c = cmd_alloc(h); + + /* + * If no specific reply queue was requested, then send the TUR + * repeatedly, requesting a reply on each reply queue; otherwise execute + * the loop exactly once using only the specified queue. + */ + if (reply_queue == DEFAULT_REPLY_QUEUE) { + first_queue = 0; + last_queue = h->nreply_queues - 1; + } else { + first_queue = reply_queue; + last_queue = reply_queue; + } + + for (rq = first_queue; rq <= last_queue; rq++) { + rc = hpsa_wait_for_test_unit_ready(h, c, lunaddr, rq); + if (rc) break; -do_it_again: - dev_warn(&h->pdev->dev, "waiting %d secs " - "for device to become ready.\n", waittime); - rc = 1; /* device not ready. */ } if (rc) @@ -4890,7 +4947,7 @@ static int hpsa_eh_device_reset_handler(struct scsi_cmnd *scsicmd) /* send a reset to the SCSI LUN which the command was sent to */ rc = hpsa_send_reset(h, dev->scsi3addr, HPSA_RESET_TYPE_LUN, DEFAULT_REPLY_QUEUE); - if (rc == 0 && wait_for_device_to_become_ready(h, dev->scsi3addr) == 0) + if (rc == 0) return SUCCESS; dev_warn(&h->pdev->dev, @@ -5086,7 +5143,7 @@ static int hpsa_send_reset_as_abort_ioaccel2(struct ctlr_info *h, } /* wait for device to recover */ - if (wait_for_device_to_become_ready(h, psa) != 0) { + 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%02x%02x%02x%02x%02x%02x%02x%02x\n", psa[0], psa[1], psa[2], psa[3],