diff options
Diffstat (limited to 'drivers/scsi/device_handler')
-rw-r--r-- | drivers/scsi/device_handler/scsi_dh_emc.c | 247 | ||||
-rw-r--r-- | drivers/scsi/device_handler/scsi_dh_hp_sw.c | 222 | ||||
-rw-r--r-- | drivers/scsi/device_handler/scsi_dh_rdac.c | 174 |
3 files changed, 172 insertions, 471 deletions
diff --git a/drivers/scsi/device_handler/scsi_dh_emc.c b/drivers/scsi/device_handler/scsi_dh_emc.c index 5b80746980b8..4a7679f6c73d 100644 --- a/drivers/scsi/device_handler/scsi_dh_emc.c +++ b/drivers/scsi/device_handler/scsi_dh_emc.c @@ -88,12 +88,6 @@ struct clariion_dh_data { */ unsigned char buffer[CLARIION_BUFFER_SIZE]; /* - * SCSI sense buffer for commands -- assumes serial issuance - * and completion sequence of all commands for same multipath. - */ - unsigned char sense[SCSI_SENSE_BUFFERSIZE]; - unsigned int senselen; - /* * LUN state */ int lun_state; @@ -116,44 +110,38 @@ struct clariion_dh_data { /* * Parse MODE_SELECT cmd reply. */ -static int trespass_endio(struct scsi_device *sdev, char *sense) +static int trespass_endio(struct scsi_device *sdev, + struct scsi_sense_hdr *sshdr) { int err = SCSI_DH_IO; - struct scsi_sense_hdr sshdr; - - if (!scsi_normalize_sense(sense, SCSI_SENSE_BUFFERSIZE, &sshdr)) { - sdev_printk(KERN_ERR, sdev, "%s: Found valid sense data 0x%2x, " - "0x%2x, 0x%2x while sending CLARiiON trespass " - "command.\n", CLARIION_NAME, sshdr.sense_key, - sshdr.asc, sshdr.ascq); - if ((sshdr.sense_key == 0x05) && (sshdr.asc == 0x04) && - (sshdr.ascq == 0x00)) { - /* - * Array based copy in progress -- do not send - * mode_select or copy will be aborted mid-stream. - */ - sdev_printk(KERN_INFO, sdev, "%s: Array Based Copy in " - "progress while sending CLARiiON trespass " - "command.\n", CLARIION_NAME); - err = SCSI_DH_DEV_TEMP_BUSY; - } else if ((sshdr.sense_key == 0x02) && (sshdr.asc == 0x04) && - (sshdr.ascq == 0x03)) { - /* - * LUN Not Ready - Manual Intervention Required - * indicates in-progress ucode upgrade (NDU). - */ - sdev_printk(KERN_INFO, sdev, "%s: Detected in-progress " - "ucode upgrade NDU operation while sending " - "CLARiiON trespass command.\n", CLARIION_NAME); - err = SCSI_DH_DEV_TEMP_BUSY; - } else - err = SCSI_DH_DEV_FAILED; - } else { - sdev_printk(KERN_INFO, sdev, - "%s: failed to send MODE SELECT, no sense available\n", - CLARIION_NAME); - } + sdev_printk(KERN_ERR, sdev, "%s: Found valid sense data 0x%2x, " + "0x%2x, 0x%2x while sending CLARiiON trespass " + "command.\n", CLARIION_NAME, sshdr->sense_key, + sshdr->asc, sshdr->ascq); + + if (sshdr->sense_key == 0x05 && sshdr->asc == 0x04 && + sshdr->ascq == 0x00) { + /* + * Array based copy in progress -- do not send + * mode_select or copy will be aborted mid-stream. + */ + sdev_printk(KERN_INFO, sdev, "%s: Array Based Copy in " + "progress while sending CLARiiON trespass " + "command.\n", CLARIION_NAME); + err = SCSI_DH_DEV_TEMP_BUSY; + } else if (sshdr->sense_key == 0x02 && sshdr->asc == 0x04 && + sshdr->ascq == 0x03) { + /* + * LUN Not Ready - Manual Intervention Required + * indicates in-progress ucode upgrade (NDU). + */ + sdev_printk(KERN_INFO, sdev, "%s: Detected in-progress " + "ucode upgrade NDU operation while sending " + "CLARiiON trespass command.\n", CLARIION_NAME); + err = SCSI_DH_DEV_TEMP_BUSY; + } else + err = SCSI_DH_DEV_FAILED; return err; } @@ -257,103 +245,15 @@ out: return sp_model; } -/* - * Get block request for REQ_BLOCK_PC command issued to path. Currently - * limited to MODE_SELECT (trespass) and INQUIRY (VPD page 0xC0) commands. - * - * Uses data and sense buffers in hardware handler context structure and - * assumes serial servicing of commands, both issuance and completion. - */ -static struct request *get_req(struct scsi_device *sdev, int cmd, - unsigned char *buffer) -{ - struct request *rq; - int len = 0; - - rq = blk_get_request(sdev->request_queue, - (cmd != INQUIRY) ? WRITE : READ, GFP_NOIO); - if (IS_ERR(rq)) { - sdev_printk(KERN_INFO, sdev, "get_req: blk_get_request failed"); - return NULL; - } - - blk_rq_set_block_pc(rq); - rq->cmd_len = COMMAND_SIZE(cmd); - rq->cmd[0] = cmd; - - switch (cmd) { - case MODE_SELECT: - len = sizeof(short_trespass); - rq->cmd[1] = 0x10; - rq->cmd[4] = len; - break; - case MODE_SELECT_10: - len = sizeof(long_trespass); - rq->cmd[1] = 0x10; - rq->cmd[8] = len; - break; - case INQUIRY: - len = CLARIION_BUFFER_SIZE; - rq->cmd[4] = len; - memset(buffer, 0, len); - break; - default: - BUG_ON(1); - break; - } - - rq->cmd_flags |= REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT | - REQ_FAILFAST_DRIVER; - rq->timeout = CLARIION_TIMEOUT; - rq->retries = CLARIION_RETRIES; - - if (blk_rq_map_kern(rq->q, rq, buffer, len, GFP_NOIO)) { - blk_put_request(rq); - return NULL; - } - - return rq; -} - -static int send_inquiry_cmd(struct scsi_device *sdev, int page, - struct clariion_dh_data *csdev) -{ - struct request *rq = get_req(sdev, INQUIRY, csdev->buffer); - int err; - - if (!rq) - return SCSI_DH_RES_TEMP_UNAVAIL; - - rq->sense = csdev->sense; - memset(rq->sense, 0, SCSI_SENSE_BUFFERSIZE); - rq->sense_len = csdev->senselen = 0; - - rq->cmd[0] = INQUIRY; - if (page != 0) { - rq->cmd[1] = 1; - rq->cmd[2] = page; - } - err = blk_execute_rq(sdev->request_queue, NULL, rq, 1); - if (err == -EIO) { - sdev_printk(KERN_INFO, sdev, - "%s: failed to send %s INQUIRY: %x\n", - CLARIION_NAME, page?"EVPD":"standard", - rq->errors); - csdev->senselen = rq->sense_len; - err = SCSI_DH_IO; - } - - blk_put_request(rq); - - return err; -} - static int send_trespass_cmd(struct scsi_device *sdev, struct clariion_dh_data *csdev) { - struct request *rq; unsigned char *page22; - int err, len, cmd; + unsigned char cdb[COMMAND_SIZE(MODE_SELECT)]; + int err, res = SCSI_DH_OK, len; + struct scsi_sense_hdr sshdr; + u64 req_flags = REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT | + REQ_FAILFAST_DRIVER; if (csdev->flags & CLARIION_SHORT_TRESPASS) { page22 = short_trespass; @@ -361,40 +261,37 @@ static int send_trespass_cmd(struct scsi_device *sdev, /* Set Honor Reservations bit */ page22[6] |= 0x80; len = sizeof(short_trespass); - cmd = MODE_SELECT; + cdb[0] = MODE_SELECT; + cdb[1] = 0x10; + cdb[4] = len; } else { page22 = long_trespass; if (!(csdev->flags & CLARIION_HONOR_RESERVATIONS)) /* Set Honor Reservations bit */ page22[10] |= 0x80; len = sizeof(long_trespass); - cmd = MODE_SELECT_10; + cdb[0] = MODE_SELECT_10; + cdb[8] = len; } BUG_ON((len > CLARIION_BUFFER_SIZE)); memcpy(csdev->buffer, page22, len); - rq = get_req(sdev, cmd, csdev->buffer); - if (!rq) - return SCSI_DH_RES_TEMP_UNAVAIL; - - rq->sense = csdev->sense; - memset(rq->sense, 0, SCSI_SENSE_BUFFERSIZE); - rq->sense_len = csdev->senselen = 0; - - err = blk_execute_rq(sdev->request_queue, NULL, rq, 1); - if (err == -EIO) { - if (rq->sense_len) { - err = trespass_endio(sdev, csdev->sense); - } else { + err = scsi_execute_req_flags(sdev, cdb, DMA_TO_DEVICE, + csdev->buffer, len, &sshdr, + CLARIION_TIMEOUT * HZ, CLARIION_RETRIES, + NULL, req_flags, 0); + if (err) { + if (scsi_sense_valid(&sshdr)) + res = trespass_endio(sdev, &sshdr); + else { sdev_printk(KERN_INFO, sdev, "%s: failed to send MODE SELECT: %x\n", - CLARIION_NAME, rq->errors); + CLARIION_NAME, err); + res = SCSI_DH_IO; } } - blk_put_request(rq); - - return err; + return res; } static int clariion_check_sense(struct scsi_device *sdev, @@ -464,21 +361,7 @@ static int clariion_std_inquiry(struct scsi_device *sdev, int err; char *sp_model; - err = send_inquiry_cmd(sdev, 0, csdev); - if (err != SCSI_DH_OK && csdev->senselen) { - struct scsi_sense_hdr sshdr; - - if (scsi_normalize_sense(csdev->sense, SCSI_SENSE_BUFFERSIZE, - &sshdr)) { - sdev_printk(KERN_ERR, sdev, "%s: INQUIRY sense code " - "%02x/%02x/%02x\n", CLARIION_NAME, - sshdr.sense_key, sshdr.asc, sshdr.ascq); - } - err = SCSI_DH_IO; - goto out; - } - - sp_model = parse_sp_model(sdev, csdev->buffer); + sp_model = parse_sp_model(sdev, sdev->inquiry); if (!sp_model) { err = SCSI_DH_DEV_UNSUPP; goto out; @@ -500,30 +383,12 @@ out: static int clariion_send_inquiry(struct scsi_device *sdev, struct clariion_dh_data *csdev) { - int err, retry = CLARIION_RETRIES; - -retry: - err = send_inquiry_cmd(sdev, 0xC0, csdev); - if (err != SCSI_DH_OK && csdev->senselen) { - struct scsi_sense_hdr sshdr; - - err = scsi_normalize_sense(csdev->sense, SCSI_SENSE_BUFFERSIZE, - &sshdr); - if (!err) - return SCSI_DH_IO; - - err = clariion_check_sense(sdev, &sshdr); - if (retry > 0 && err == ADD_TO_MLQUEUE) { - retry--; - goto retry; - } - sdev_printk(KERN_ERR, sdev, "%s: INQUIRY sense code " - "%02x/%02x/%02x\n", CLARIION_NAME, - sshdr.sense_key, sshdr.asc, sshdr.ascq); - err = SCSI_DH_IO; - } else { + int err = SCSI_DH_IO; + + if (!scsi_get_vpd_page(sdev, 0xC0, csdev->buffer, + CLARIION_BUFFER_SIZE)) err = parse_sp_info_reply(sdev, csdev); - } + return err; } diff --git a/drivers/scsi/device_handler/scsi_dh_hp_sw.c b/drivers/scsi/device_handler/scsi_dh_hp_sw.c index 308e87195dc1..be43c940636d 100644 --- a/drivers/scsi/device_handler/scsi_dh_hp_sw.c +++ b/drivers/scsi/device_handler/scsi_dh_hp_sw.c @@ -38,13 +38,10 @@ #define HP_SW_PATH_PASSIVE 1 struct hp_sw_dh_data { - unsigned char sense[SCSI_SENSE_BUFFERSIZE]; int path_state; int retries; int retry_cnt; struct scsi_device *sdev; - activate_complete callback_fn; - void *callback_data; }; static int hp_sw_start_stop(struct hp_sw_dh_data *); @@ -56,43 +53,34 @@ static int hp_sw_start_stop(struct hp_sw_dh_data *); * * Returns SCSI_DH_DEV_OFFLINED if the sdev is on the passive path */ -static int tur_done(struct scsi_device *sdev, unsigned char *sense) +static int tur_done(struct scsi_device *sdev, struct hp_sw_dh_data *h, + struct scsi_sense_hdr *sshdr) { - struct scsi_sense_hdr sshdr; - int ret; + int ret = SCSI_DH_IO; - ret = scsi_normalize_sense(sense, SCSI_SENSE_BUFFERSIZE, &sshdr); - if (!ret) { - sdev_printk(KERN_WARNING, sdev, - "%s: sending tur failed, no sense available\n", - HP_SW_NAME); - ret = SCSI_DH_IO; - goto done; - } - switch (sshdr.sense_key) { + switch (sshdr->sense_key) { case UNIT_ATTENTION: ret = SCSI_DH_IMM_RETRY; break; case NOT_READY: - if ((sshdr.asc == 0x04) && (sshdr.ascq == 2)) { + if (sshdr->asc == 0x04 && sshdr->ascq == 2) { /* * LUN not ready - Initialization command required * * This is the passive path */ - ret = SCSI_DH_DEV_OFFLINED; + h->path_state = HP_SW_PATH_PASSIVE; + ret = SCSI_DH_OK; break; } /* Fallthrough */ default: sdev_printk(KERN_WARNING, sdev, "%s: sending tur failed, sense %x/%x/%x\n", - HP_SW_NAME, sshdr.sense_key, sshdr.asc, - sshdr.ascq); + HP_SW_NAME, sshdr->sense_key, sshdr->asc, + sshdr->ascq); break; } - -done: return ret; } @@ -105,131 +93,36 @@ done: */ static int hp_sw_tur(struct scsi_device *sdev, struct hp_sw_dh_data *h) { - struct request *req; - int ret; + unsigned char cmd[6] = { TEST_UNIT_READY }; + struct scsi_sense_hdr sshdr; + int ret = SCSI_DH_OK, res; + u64 req_flags = REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT | + REQ_FAILFAST_DRIVER; retry: - req = blk_get_request(sdev->request_queue, WRITE, GFP_NOIO); - if (IS_ERR(req)) - return SCSI_DH_RES_TEMP_UNAVAIL; - - blk_rq_set_block_pc(req); - req->cmd_flags |= REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT | - REQ_FAILFAST_DRIVER; - req->cmd_len = COMMAND_SIZE(TEST_UNIT_READY); - req->cmd[0] = TEST_UNIT_READY; - req->timeout = HP_SW_TIMEOUT; - req->sense = h->sense; - memset(req->sense, 0, SCSI_SENSE_BUFFERSIZE); - req->sense_len = 0; - - ret = blk_execute_rq(req->q, NULL, req, 1); - if (ret == -EIO) { - if (req->sense_len > 0) { - ret = tur_done(sdev, h->sense); - } else { + res = scsi_execute_req_flags(sdev, cmd, DMA_NONE, NULL, 0, &sshdr, + HP_SW_TIMEOUT, HP_SW_RETRIES, + NULL, req_flags, 0); + if (res) { + if (scsi_sense_valid(&sshdr)) + ret = tur_done(sdev, h, &sshdr); + else { sdev_printk(KERN_WARNING, sdev, "%s: sending tur failed with %x\n", - HP_SW_NAME, req->errors); + HP_SW_NAME, res); ret = SCSI_DH_IO; } } else { h->path_state = HP_SW_PATH_ACTIVE; ret = SCSI_DH_OK; } - if (ret == SCSI_DH_IMM_RETRY) { - blk_put_request(req); + if (ret == SCSI_DH_IMM_RETRY) goto retry; - } - if (ret == SCSI_DH_DEV_OFFLINED) { - h->path_state = HP_SW_PATH_PASSIVE; - ret = SCSI_DH_OK; - } - - blk_put_request(req); return ret; } /* - * start_done - Handle START STOP UNIT return status - * @sdev: sdev the command has been sent to - * @errors: blk error code - */ -static int start_done(struct scsi_device *sdev, unsigned char *sense) -{ - struct scsi_sense_hdr sshdr; - int rc; - - rc = scsi_normalize_sense(sense, SCSI_SENSE_BUFFERSIZE, &sshdr); - if (!rc) { - sdev_printk(KERN_WARNING, sdev, - "%s: sending start_stop_unit failed, " - "no sense available\n", - HP_SW_NAME); - return SCSI_DH_IO; - } - switch (sshdr.sense_key) { - case NOT_READY: - if ((sshdr.asc == 0x04) && (sshdr.ascq == 3)) { - /* - * LUN not ready - manual intervention required - * - * Switch-over in progress, retry. - */ - rc = SCSI_DH_RETRY; - break; - } - /* fall through */ - default: - sdev_printk(KERN_WARNING, sdev, - "%s: sending start_stop_unit failed, sense %x/%x/%x\n", - HP_SW_NAME, sshdr.sense_key, sshdr.asc, - sshdr.ascq); - rc = SCSI_DH_IO; - } - - return rc; -} - -static void start_stop_endio(struct request *req, int error) -{ - struct hp_sw_dh_data *h = req->end_io_data; - unsigned err = SCSI_DH_OK; - - if (error || host_byte(req->errors) != DID_OK || - msg_byte(req->errors) != COMMAND_COMPLETE) { - sdev_printk(KERN_WARNING, h->sdev, - "%s: sending start_stop_unit failed with %x\n", - HP_SW_NAME, req->errors); - err = SCSI_DH_IO; - goto done; - } - - if (req->sense_len > 0) { - err = start_done(h->sdev, h->sense); - if (err == SCSI_DH_RETRY) { - err = SCSI_DH_IO; - if (--h->retry_cnt) { - blk_put_request(req); - err = hp_sw_start_stop(h); - if (err == SCSI_DH_OK) - return; - } - } - } -done: - req->end_io_data = NULL; - __blk_put_request(req->q, req); - if (h->callback_fn) { - h->callback_fn(h->callback_data, err); - h->callback_fn = h->callback_data = NULL; - } - return; - -} - -/* * hp_sw_start_stop - Send START STOP UNIT command * @sdev: sdev command should be sent to * @@ -237,26 +130,48 @@ done: */ static int hp_sw_start_stop(struct hp_sw_dh_data *h) { - struct request *req; - - req = blk_get_request(h->sdev->request_queue, WRITE, GFP_ATOMIC); - if (IS_ERR(req)) - return SCSI_DH_RES_TEMP_UNAVAIL; - - blk_rq_set_block_pc(req); - req->cmd_flags |= REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT | - REQ_FAILFAST_DRIVER; - req->cmd_len = COMMAND_SIZE(START_STOP); - req->cmd[0] = START_STOP; - req->cmd[4] = 1; /* Start spin cycle */ - req->timeout = HP_SW_TIMEOUT; - req->sense = h->sense; - memset(req->sense, 0, SCSI_SENSE_BUFFERSIZE); - req->sense_len = 0; - req->end_io_data = h; + unsigned char cmd[6] = { START_STOP, 0, 0, 0, 1, 0 }; + struct scsi_sense_hdr sshdr; + struct scsi_device *sdev = h->sdev; + int res, rc = SCSI_DH_OK; + int retry_cnt = HP_SW_RETRIES; + u64 req_flags = REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT | + REQ_FAILFAST_DRIVER; - blk_execute_rq_nowait(req->q, NULL, req, 1, start_stop_endio); - return SCSI_DH_OK; +retry: + res = scsi_execute_req_flags(sdev, cmd, DMA_NONE, NULL, 0, &sshdr, + HP_SW_TIMEOUT, HP_SW_RETRIES, + NULL, req_flags, 0); + if (res) { + if (!scsi_sense_valid(&sshdr)) { + sdev_printk(KERN_WARNING, sdev, + "%s: sending start_stop_unit failed, " + "no sense available\n", HP_SW_NAME); + return SCSI_DH_IO; + } + switch (sshdr.sense_key) { + case NOT_READY: + if (sshdr.asc == 0x04 && sshdr.ascq == 3) { + /* + * LUN not ready - manual intervention required + * + * Switch-over in progress, retry. + */ + if (--retry_cnt) + goto retry; + rc = SCSI_DH_RETRY; + break; + } + /* fall through */ + default: + sdev_printk(KERN_WARNING, sdev, + "%s: sending start_stop_unit failed, " + "sense %x/%x/%x\n", HP_SW_NAME, + sshdr.sense_key, sshdr.asc, sshdr.ascq); + rc = SCSI_DH_IO; + } + } + return rc; } static int hp_sw_prep_fn(struct scsi_device *sdev, struct request *req) @@ -290,15 +205,8 @@ static int hp_sw_activate(struct scsi_device *sdev, ret = hp_sw_tur(sdev, h); - if (ret == SCSI_DH_OK && h->path_state == HP_SW_PATH_PASSIVE) { - h->retry_cnt = h->retries; - h->callback_fn = fn; - h->callback_data = data; + if (ret == SCSI_DH_OK && h->path_state == HP_SW_PATH_PASSIVE) ret = hp_sw_start_stop(h); - if (ret == SCSI_DH_OK) - return 0; - h->callback_fn = h->callback_data = NULL; - } if (fn) fn(data, ret); diff --git a/drivers/scsi/device_handler/scsi_dh_rdac.c b/drivers/scsi/device_handler/scsi_dh_rdac.c index 00d9c326158e..b64eaae8533d 100644 --- a/drivers/scsi/device_handler/scsi_dh_rdac.c +++ b/drivers/scsi/device_handler/scsi_dh_rdac.c @@ -205,7 +205,6 @@ struct rdac_dh_data { #define RDAC_NON_PREFERRED 1 char preferred; - unsigned char sense[SCSI_SENSE_BUFFERSIZE]; union { struct c2_inquiry c2; struct c4_inquiry c4; @@ -262,40 +261,12 @@ do { \ sdev_printk(KERN_INFO, sdev, RDAC_NAME ": " f "\n", ## arg); \ } while (0); -static struct request *get_rdac_req(struct scsi_device *sdev, - void *buffer, unsigned buflen, int rw) +static unsigned int rdac_failover_get(struct rdac_controller *ctlr, + struct list_head *list, + unsigned char *cdb) { - struct request *rq; - struct request_queue *q = sdev->request_queue; - - rq = blk_get_request(q, rw, GFP_NOIO); - - if (IS_ERR(rq)) { - sdev_printk(KERN_INFO, sdev, - "get_rdac_req: blk_get_request failed.\n"); - return NULL; - } - blk_rq_set_block_pc(rq); - - if (buflen && blk_rq_map_kern(q, rq, buffer, buflen, GFP_NOIO)) { - blk_put_request(rq); - sdev_printk(KERN_INFO, sdev, - "get_rdac_req: blk_rq_map_kern failed.\n"); - return NULL; - } - - rq->cmd_flags |= REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT | - REQ_FAILFAST_DRIVER; - rq->retries = RDAC_RETRIES; - rq->timeout = RDAC_TIMEOUT; - - return rq; -} - -static struct request *rdac_failover_get(struct scsi_device *sdev, - struct rdac_dh_data *h, struct list_head *list) -{ - struct request *rq; + struct scsi_device *sdev = ctlr->ms_sdev; + struct rdac_dh_data *h = sdev->handler_data; struct rdac_mode_common *common; unsigned data_size; struct rdac_queue_data *qdata; @@ -332,27 +303,17 @@ static struct request *rdac_failover_get(struct scsi_device *sdev, lun_table[qdata->h->lun] = 0x81; } - /* get request for block layer packet command */ - rq = get_rdac_req(sdev, &h->ctlr->mode_select, data_size, WRITE); - if (!rq) - return NULL; - /* Prepare the command. */ if (h->ctlr->use_ms10) { - rq->cmd[0] = MODE_SELECT_10; - rq->cmd[7] = data_size >> 8; - rq->cmd[8] = data_size & 0xff; + cdb[0] = MODE_SELECT_10; + cdb[7] = data_size >> 8; + cdb[8] = data_size & 0xff; } else { - rq->cmd[0] = MODE_SELECT; - rq->cmd[4] = data_size; + cdb[0] = MODE_SELECT; + cdb[4] = data_size; } - rq->cmd_len = COMMAND_SIZE(rq->cmd[0]); - - rq->sense = h->sense; - memset(rq->sense, 0, SCSI_SENSE_BUFFERSIZE); - rq->sense_len = 0; - return rq; + return data_size; } static void release_controller(struct kref *kref) @@ -400,46 +361,14 @@ static struct rdac_controller *get_controller(int index, char *array_name, return ctlr; } -static int submit_inquiry(struct scsi_device *sdev, int page_code, - unsigned int len, struct rdac_dh_data *h) -{ - struct request *rq; - struct request_queue *q = sdev->request_queue; - int err = SCSI_DH_RES_TEMP_UNAVAIL; - - rq = get_rdac_req(sdev, &h->inq, len, READ); - if (!rq) - goto done; - - /* Prepare the command. */ - rq->cmd[0] = INQUIRY; - rq->cmd[1] = 1; - rq->cmd[2] = page_code; - rq->cmd[4] = len; - rq->cmd_len = COMMAND_SIZE(INQUIRY); - - rq->sense = h->sense; - memset(rq->sense, 0, SCSI_SENSE_BUFFERSIZE); - rq->sense_len = 0; - - err = blk_execute_rq(q, NULL, rq, 1); - if (err == -EIO) - err = SCSI_DH_IO; - - blk_put_request(rq); -done: - return err; -} - static int get_lun_info(struct scsi_device *sdev, struct rdac_dh_data *h, char *array_name, u8 *array_id) { - int err, i; - struct c8_inquiry *inqp; + int err = SCSI_DH_IO, i; + struct c8_inquiry *inqp = &h->inq.c8; - err = submit_inquiry(sdev, 0xC8, sizeof(struct c8_inquiry), h); - if (err == SCSI_DH_OK) { - inqp = &h->inq.c8; + if (!scsi_get_vpd_page(sdev, 0xC8, (unsigned char *)inqp, + sizeof(struct c8_inquiry))) { if (inqp->page_code != 0xc8) return SCSI_DH_NOSYS; if (inqp->page_id[0] != 'e' || inqp->page_id[1] != 'd' || @@ -453,20 +382,20 @@ static int get_lun_info(struct scsi_device *sdev, struct rdac_dh_data *h, *(array_name+ARRAY_LABEL_LEN-1) = '\0'; memset(array_id, 0, UNIQUE_ID_LEN); memcpy(array_id, inqp->array_unique_id, inqp->array_uniq_id_len); + err = SCSI_DH_OK; } return err; } static int check_ownership(struct scsi_device *sdev, struct rdac_dh_data *h) { - int err, access_state; + int err = SCSI_DH_IO, access_state; struct rdac_dh_data *tmp; - struct c9_inquiry *inqp; + struct c9_inquiry *inqp = &h->inq.c9; h->state = RDAC_STATE_ACTIVE; - err = submit_inquiry(sdev, 0xC9, sizeof(struct c9_inquiry), h); - if (err == SCSI_DH_OK) { - inqp = &h->inq.c9; + if (!scsi_get_vpd_page(sdev, 0xC9, (unsigned char *)inqp, + sizeof(struct c9_inquiry))) { /* detect the operating mode */ if ((inqp->avte_cvp >> 5) & 0x1) h->mode = RDAC_MODE_IOSHIP; /* LUN in IOSHIP mode */ @@ -501,6 +430,7 @@ static int check_ownership(struct scsi_device *sdev, struct rdac_dh_data *h) tmp->sdev->access_state = access_state; } rcu_read_unlock(); + err = SCSI_DH_OK; } return err; @@ -509,12 +439,11 @@ static int check_ownership(struct scsi_device *sdev, struct rdac_dh_data *h) static int initialize_controller(struct scsi_device *sdev, struct rdac_dh_data *h, char *array_name, u8 *array_id) { - int err, index; - struct c4_inquiry *inqp; + int err = SCSI_DH_IO, index; + struct c4_inquiry *inqp = &h->inq.c4; - err = submit_inquiry(sdev, 0xC4, sizeof(struct c4_inquiry), h); - if (err == SCSI_DH_OK) { - inqp = &h->inq.c4; + if (!scsi_get_vpd_page(sdev, 0xC4, (unsigned char *)inqp, + sizeof(struct c4_inquiry))) { /* get the controller index */ if (inqp->slot_id[1] == 0x31) index = 0; @@ -530,18 +459,18 @@ static int initialize_controller(struct scsi_device *sdev, h->sdev = sdev; } spin_unlock(&list_lock); + err = SCSI_DH_OK; } return err; } static int set_mode_select(struct scsi_device *sdev, struct rdac_dh_data *h) { - int err; - struct c2_inquiry *inqp; + int err = SCSI_DH_IO; + struct c2_inquiry *inqp = &h->inq.c2; - err = submit_inquiry(sdev, 0xC2, sizeof(struct c2_inquiry), h); - if (err == SCSI_DH_OK) { - inqp = &h->inq.c2; + if (!scsi_get_vpd_page(sdev, 0xC2, (unsigned char *)inqp, + sizeof(struct c2_inquiry))) { /* * If more than MODE6_MAX_LUN luns are supported, use * mode select 10 @@ -550,36 +479,35 @@ static int set_mode_select(struct scsi_device *sdev, struct rdac_dh_data *h) h->ctlr->use_ms10 = 1; else h->ctlr->use_ms10 = 0; + err = SCSI_DH_OK; } return err; } static int mode_select_handle_sense(struct scsi_device *sdev, - unsigned char *sensebuf) + struct scsi_sense_hdr *sense_hdr) { - struct scsi_sense_hdr sense_hdr; - int err = SCSI_DH_IO, ret; + int err = SCSI_DH_IO; struct rdac_dh_data *h = sdev->handler_data; - ret = scsi_normalize_sense(sensebuf, SCSI_SENSE_BUFFERSIZE, &sense_hdr); - if (!ret) + if (!scsi_sense_valid(sense_hdr)) goto done; - switch (sense_hdr.sense_key) { + switch (sense_hdr->sense_key) { case NO_SENSE: case ABORTED_COMMAND: case UNIT_ATTENTION: err = SCSI_DH_RETRY; break; case NOT_READY: - if (sense_hdr.asc == 0x04 && sense_hdr.ascq == 0x01) + if (sense_hdr->asc == 0x04 && sense_hdr->ascq == 0x01) /* LUN Not Ready and is in the Process of Becoming * Ready */ err = SCSI_DH_RETRY; break; case ILLEGAL_REQUEST: - if (sense_hdr.asc == 0x91 && sense_hdr.ascq == 0x36) + if (sense_hdr->asc == 0x91 && sense_hdr->ascq == 0x36) /* * Command Lock contention */ @@ -592,7 +520,7 @@ static int mode_select_handle_sense(struct scsi_device *sdev, RDAC_LOG(RDAC_LOG_FAILOVER, sdev, "array %s, ctlr %d, " "MODE_SELECT returned with sense %02x/%02x/%02x", (char *) h->ctlr->array_name, h->ctlr->index, - sense_hdr.sense_key, sense_hdr.asc, sense_hdr.ascq); + sense_hdr->sense_key, sense_hdr->asc, sense_hdr->ascq); done: return err; @@ -602,13 +530,16 @@ static void send_mode_select(struct work_struct *work) { struct rdac_controller *ctlr = container_of(work, struct rdac_controller, ms_work); - struct request *rq; struct scsi_device *sdev = ctlr->ms_sdev; struct rdac_dh_data *h = sdev->handler_data; - struct request_queue *q = sdev->request_queue; - int err, retry_cnt = RDAC_RETRY_COUNT; + int err = SCSI_DH_OK, retry_cnt = RDAC_RETRY_COUNT; struct rdac_queue_data *tmp, *qdata; LIST_HEAD(list); + unsigned char cdb[COMMAND_SIZE(MODE_SELECT_10)]; + struct scsi_sense_hdr sshdr; + unsigned int data_size; + u64 req_flags = REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT | + REQ_FAILFAST_DRIVER; spin_lock(&ctlr->ms_lock); list_splice_init(&ctlr->ms_head, &list); @@ -616,21 +547,19 @@ static void send_mode_select(struct work_struct *work) ctlr->ms_sdev = NULL; spin_unlock(&ctlr->ms_lock); -retry: - err = SCSI_DH_RES_TEMP_UNAVAIL; - rq = rdac_failover_get(sdev, h, &list); - if (!rq) - goto done; + retry: + data_size = rdac_failover_get(ctlr, &list, cdb); RDAC_LOG(RDAC_LOG_FAILOVER, sdev, "array %s, ctlr %d, " "%s MODE_SELECT command", (char *) h->ctlr->array_name, h->ctlr->index, (retry_cnt == RDAC_RETRY_COUNT) ? "queueing" : "retrying"); - err = blk_execute_rq(q, NULL, rq, 1); - blk_put_request(rq); - if (err != SCSI_DH_OK) { - err = mode_select_handle_sense(sdev, h->sense); + if (scsi_execute_req_flags(sdev, cdb, DMA_TO_DEVICE, + &h->ctlr->mode_select, data_size, &sshdr, + RDAC_TIMEOUT * HZ, + RDAC_RETRIES, NULL, req_flags, 0)) { + err = mode_select_handle_sense(sdev, &sshdr); if (err == SCSI_DH_RETRY && retry_cnt--) goto retry; if (err == SCSI_DH_IMM_RETRY) @@ -643,7 +572,6 @@ retry: (char *) h->ctlr->array_name, h->ctlr->index); } -done: list_for_each_entry_safe(qdata, tmp, &list, entry) { list_del(&qdata->entry); if (err == SCSI_DH_OK) |