diff options
Diffstat (limited to 'drivers/scsi')
-rw-r--r-- | drivers/scsi/ahci.c | 1 | ||||
-rw-r--r-- | drivers/scsi/ata_piix.c | 1 | ||||
-rw-r--r-- | drivers/scsi/hosts.c | 9 | ||||
-rw-r--r-- | drivers/scsi/ide-scsi.c | 4 | ||||
-rw-r--r-- | drivers/scsi/libata-core.c | 31 | ||||
-rw-r--r-- | drivers/scsi/libata-scsi.c | 32 | ||||
-rw-r--r-- | drivers/scsi/libata.h | 4 | ||||
-rw-r--r-- | drivers/scsi/sata_mv.c | 1 | ||||
-rw-r--r-- | drivers/scsi/sata_nv.c | 1 | ||||
-rw-r--r-- | drivers/scsi/sata_promise.c | 1 | ||||
-rw-r--r-- | drivers/scsi/sata_sil.c | 1 | ||||
-rw-r--r-- | drivers/scsi/sata_sil24.c | 1 | ||||
-rw-r--r-- | drivers/scsi/sata_sis.c | 1 | ||||
-rw-r--r-- | drivers/scsi/sata_svw.c | 1 | ||||
-rw-r--r-- | drivers/scsi/sata_sx4.c | 1 | ||||
-rw-r--r-- | drivers/scsi/sata_uli.c | 1 | ||||
-rw-r--r-- | drivers/scsi/sata_via.c | 1 | ||||
-rw-r--r-- | drivers/scsi/sata_vsc.c | 1 | ||||
-rw-r--r-- | drivers/scsi/scsi_lib.c | 50 | ||||
-rw-r--r-- | drivers/scsi/sd.c | 85 |
20 files changed, 103 insertions, 125 deletions
diff --git a/drivers/scsi/ahci.c b/drivers/scsi/ahci.c index 887eaa2a3eb..d113290b5fc 100644 --- a/drivers/scsi/ahci.c +++ b/drivers/scsi/ahci.c @@ -214,7 +214,6 @@ static struct scsi_host_template ahci_sht = { .dma_boundary = AHCI_DMA_BOUNDARY, .slave_configure = ata_scsi_slave_config, .bios_param = ata_std_bios_param, - .ordered_flush = 1, }; static const struct ata_port_operations ahci_ops = { diff --git a/drivers/scsi/ata_piix.c b/drivers/scsi/ata_piix.c index f7963034002..557788ec4ee 100644 --- a/drivers/scsi/ata_piix.c +++ b/drivers/scsi/ata_piix.c @@ -187,7 +187,6 @@ static struct scsi_host_template piix_sht = { .dma_boundary = ATA_DMA_BOUNDARY, .slave_configure = ata_scsi_slave_config, .bios_param = ata_std_bios_param, - .ordered_flush = 1, .resume = ata_scsi_device_resume, .suspend = ata_scsi_device_suspend, }; diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c index 5b9c2c5a7f0..66783c860a1 100644 --- a/drivers/scsi/hosts.c +++ b/drivers/scsi/hosts.c @@ -347,17 +347,8 @@ struct Scsi_Host *scsi_host_alloc(struct scsi_host_template *sht, int privsize) shost->cmd_per_lun = sht->cmd_per_lun; shost->unchecked_isa_dma = sht->unchecked_isa_dma; shost->use_clustering = sht->use_clustering; - shost->ordered_flush = sht->ordered_flush; shost->ordered_tag = sht->ordered_tag; - /* - * hosts/devices that do queueing must support ordered tags - */ - if (shost->can_queue > 1 && shost->ordered_flush) { - printk(KERN_ERR "scsi: ordered flushes don't support queueing\n"); - shost->ordered_flush = 0; - } - if (sht->max_host_blocked) shost->max_host_blocked = sht->max_host_blocked; else diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c index 4cb1f3ed910..3c688ef5466 100644 --- a/drivers/scsi/ide-scsi.c +++ b/drivers/scsi/ide-scsi.c @@ -1046,7 +1046,7 @@ static int idescsi_eh_reset (struct scsi_cmnd *cmd) /* kill current request */ blkdev_dequeue_request(req); - end_that_request_last(req); + end_that_request_last(req, 0); if (req->flags & REQ_SENSE) kfree(scsi->pc->buffer); kfree(scsi->pc); @@ -1056,7 +1056,7 @@ static int idescsi_eh_reset (struct scsi_cmnd *cmd) /* now nuke the drive queue */ while ((req = elv_next_request(drive->queue))) { blkdev_dequeue_request(req); - end_that_request_last(req); + end_that_request_last(req, 0); } HWGROUP(drive)->rq = NULL; diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c index 9c66d405939..f55b9b3f7b3 100644 --- a/drivers/scsi/libata-core.c +++ b/drivers/scsi/libata-core.c @@ -562,16 +562,28 @@ static const u8 ata_rw_cmds[] = { ATA_CMD_WRITE_MULTI, ATA_CMD_READ_MULTI_EXT, ATA_CMD_WRITE_MULTI_EXT, + 0, + 0, + 0, + ATA_CMD_WRITE_MULTI_FUA_EXT, /* pio */ ATA_CMD_PIO_READ, ATA_CMD_PIO_WRITE, ATA_CMD_PIO_READ_EXT, ATA_CMD_PIO_WRITE_EXT, + 0, + 0, + 0, + 0, /* dma */ ATA_CMD_READ, ATA_CMD_WRITE, ATA_CMD_READ_EXT, - ATA_CMD_WRITE_EXT + ATA_CMD_WRITE_EXT, + 0, + 0, + 0, + ATA_CMD_WRITE_FUA_EXT }; /** @@ -584,25 +596,32 @@ static const u8 ata_rw_cmds[] = { * LOCKING: * caller. */ -void ata_rwcmd_protocol(struct ata_queued_cmd *qc) +int ata_rwcmd_protocol(struct ata_queued_cmd *qc) { struct ata_taskfile *tf = &qc->tf; struct ata_device *dev = qc->dev; + u8 cmd; - int index, lba48, write; + int index, fua, lba48, write; + fua = (tf->flags & ATA_TFLAG_FUA) ? 4 : 0; lba48 = (tf->flags & ATA_TFLAG_LBA48) ? 2 : 0; write = (tf->flags & ATA_TFLAG_WRITE) ? 1 : 0; if (dev->flags & ATA_DFLAG_PIO) { tf->protocol = ATA_PROT_PIO; - index = dev->multi_count ? 0 : 4; + index = dev->multi_count ? 0 : 8; } else { tf->protocol = ATA_PROT_DMA; - index = 8; + index = 16; } - tf->command = ata_rw_cmds[index + lba48 + write]; + cmd = ata_rw_cmds[index + fua + lba48 + write]; + if (cmd) { + tf->command = cmd; + return 0; + } + return -1; } static const char * const xfer_mode_str[] = { diff --git a/drivers/scsi/libata-scsi.c b/drivers/scsi/libata-scsi.c index c1ebede14a4..cfbceb50471 100644 --- a/drivers/scsi/libata-scsi.c +++ b/drivers/scsi/libata-scsi.c @@ -1096,11 +1096,13 @@ static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc, const u8 *scsicm scsicmd[0] == WRITE_16) tf->flags |= ATA_TFLAG_WRITE; - /* Calculate the SCSI LBA and transfer length. */ + /* Calculate the SCSI LBA, transfer length and FUA. */ switch (scsicmd[0]) { case READ_10: case WRITE_10: scsi_10_lba_len(scsicmd, &block, &n_block); + if (unlikely(scsicmd[1] & (1 << 3))) + tf->flags |= ATA_TFLAG_FUA; break; case READ_6: case WRITE_6: @@ -1115,6 +1117,8 @@ static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc, const u8 *scsicm case READ_16: case WRITE_16: scsi_16_lba_len(scsicmd, &block, &n_block); + if (unlikely(scsicmd[1] & (1 << 3))) + tf->flags |= ATA_TFLAG_FUA; break; default: DPRINTK("no-byte command\n"); @@ -1158,7 +1162,8 @@ static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc, const u8 *scsicm tf->device |= (block >> 24) & 0xf; } - ata_rwcmd_protocol(qc); + if (unlikely(ata_rwcmd_protocol(qc) < 0)) + goto invalid_fld; qc->nsect = n_block; tf->nsect = n_block & 0xff; @@ -1176,7 +1181,8 @@ static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc, const u8 *scsicm if ((block >> 28) || (n_block > 256)) goto out_of_range; - ata_rwcmd_protocol(qc); + if (unlikely(ata_rwcmd_protocol(qc) < 0)) + goto invalid_fld; /* Convert LBA to CHS */ track = (u32)block / dev->sectors; @@ -1711,6 +1717,7 @@ static unsigned int ata_msense_rw_recovery(u8 **ptr_io, const u8 *last) unsigned int ata_scsiop_mode_sense(struct ata_scsi_args *args, u8 *rbuf, unsigned int buflen) { + struct ata_device *dev = args->dev; u8 *scsicmd = args->cmd->cmnd, *p, *last; const u8 sat_blk_desc[] = { 0, 0, 0, 0, /* number of blocks: sat unspecified */ @@ -1719,6 +1726,7 @@ unsigned int ata_scsiop_mode_sense(struct ata_scsi_args *args, u8 *rbuf, }; u8 pg, spg; unsigned int ebd, page_control, six_byte, output_len, alloc_len, minlen; + u8 dpofua; VPRINTK("ENTER\n"); @@ -1787,9 +1795,17 @@ unsigned int ata_scsiop_mode_sense(struct ata_scsi_args *args, u8 *rbuf, if (minlen < 1) return 0; + + dpofua = 0; + if (ata_id_has_fua(args->id) && dev->flags & ATA_DFLAG_LBA48 && + (!(dev->flags & ATA_DFLAG_PIO) || dev->multi_count)) + dpofua = 1 << 4; + if (six_byte) { output_len--; rbuf[0] = output_len; + if (minlen > 2) + rbuf[2] |= dpofua; if (ebd) { if (minlen > 3) rbuf[3] = sizeof(sat_blk_desc); @@ -1802,6 +1818,8 @@ unsigned int ata_scsiop_mode_sense(struct ata_scsi_args *args, u8 *rbuf, rbuf[0] = output_len >> 8; if (minlen > 1) rbuf[1] = output_len; + if (minlen > 3) + rbuf[3] |= dpofua; if (ebd) { if (minlen > 7) rbuf[7] = sizeof(sat_blk_desc); @@ -2462,7 +2480,7 @@ int ata_scsi_queuecmd(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)) if (xlat_func) ata_scsi_translate(ap, dev, cmd, done, xlat_func); else - ata_scsi_simulate(dev->id, cmd, done); + ata_scsi_simulate(ap, dev, cmd, done); } else ata_scsi_translate(ap, dev, cmd, done, atapi_xlat); @@ -2485,14 +2503,16 @@ out_unlock: * spin_lock_irqsave(host_set lock) */ -void ata_scsi_simulate(u16 *id, +void ata_scsi_simulate(struct ata_port *ap, struct ata_device *dev, struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)) { struct ata_scsi_args args; const u8 *scsicmd = cmd->cmnd; - args.id = id; + args.ap = ap; + args.dev = dev; + args.id = dev->id; args.cmd = cmd; args.done = done; diff --git a/drivers/scsi/libata.h b/drivers/scsi/libata.h index 251e53bdc6e..e03ce48b7b4 100644 --- a/drivers/scsi/libata.h +++ b/drivers/scsi/libata.h @@ -32,6 +32,8 @@ #define DRV_VERSION "1.20" /* must be exactly four chars */ struct ata_scsi_args { + struct ata_port *ap; + struct ata_device *dev; u16 *id; struct scsi_cmnd *cmd; void (*done)(struct scsi_cmnd *); @@ -41,7 +43,7 @@ struct ata_scsi_args { extern int atapi_enabled; extern struct ata_queued_cmd *ata_qc_new_init(struct ata_port *ap, struct ata_device *dev); -extern void ata_rwcmd_protocol(struct ata_queued_cmd *qc); +extern int ata_rwcmd_protocol(struct ata_queued_cmd *qc); extern void ata_qc_free(struct ata_queued_cmd *qc); extern int ata_qc_issue(struct ata_queued_cmd *qc); extern int ata_check_atapi_dma(struct ata_queued_cmd *qc); diff --git a/drivers/scsi/sata_mv.c b/drivers/scsi/sata_mv.c index b2bf16a9bf4..cd54244058b 100644 --- a/drivers/scsi/sata_mv.c +++ b/drivers/scsi/sata_mv.c @@ -374,7 +374,6 @@ static struct scsi_host_template mv_sht = { .dma_boundary = MV_DMA_BOUNDARY, .slave_configure = ata_scsi_slave_config, .bios_param = ata_std_bios_param, - .ordered_flush = 1, }; static const struct ata_port_operations mv5_ops = { diff --git a/drivers/scsi/sata_nv.c b/drivers/scsi/sata_nv.c index 4954896dfdb..c0cf52cb975 100644 --- a/drivers/scsi/sata_nv.c +++ b/drivers/scsi/sata_nv.c @@ -235,7 +235,6 @@ static struct scsi_host_template nv_sht = { .dma_boundary = ATA_DMA_BOUNDARY, .slave_configure = ata_scsi_slave_config, .bios_param = ata_std_bios_param, - .ordered_flush = 1, }; static const struct ata_port_operations nv_ops = { diff --git a/drivers/scsi/sata_promise.c b/drivers/scsi/sata_promise.c index da7fa04b8a7..3d1ea09a06a 100644 --- a/drivers/scsi/sata_promise.c +++ b/drivers/scsi/sata_promise.c @@ -114,7 +114,6 @@ static struct scsi_host_template pdc_ata_sht = { .dma_boundary = ATA_DMA_BOUNDARY, .slave_configure = ata_scsi_slave_config, .bios_param = ata_std_bios_param, - .ordered_flush = 1, }; static const struct ata_port_operations pdc_sata_ops = { diff --git a/drivers/scsi/sata_sil.c b/drivers/scsi/sata_sil.c index d2053487c73..b017f85e6d6 100644 --- a/drivers/scsi/sata_sil.c +++ b/drivers/scsi/sata_sil.c @@ -147,7 +147,6 @@ static struct scsi_host_template sil_sht = { .dma_boundary = ATA_DMA_BOUNDARY, .slave_configure = ata_scsi_slave_config, .bios_param = ata_std_bios_param, - .ordered_flush = 1, }; static const struct ata_port_operations sil_ops = { diff --git a/drivers/scsi/sata_sil24.c b/drivers/scsi/sata_sil24.c index a0ad3ed2200..923130185a9 100644 --- a/drivers/scsi/sata_sil24.c +++ b/drivers/scsi/sata_sil24.c @@ -292,7 +292,6 @@ static struct scsi_host_template sil24_sht = { .dma_boundary = ATA_DMA_BOUNDARY, .slave_configure = ata_scsi_slave_config, .bios_param = ata_std_bios_param, - .ordered_flush = 1, /* NCQ not supported yet */ }; static const struct ata_port_operations sil24_ops = { diff --git a/drivers/scsi/sata_sis.c b/drivers/scsi/sata_sis.c index 32e12620b16..2df8c5632ac 100644 --- a/drivers/scsi/sata_sis.c +++ b/drivers/scsi/sata_sis.c @@ -99,7 +99,6 @@ static struct scsi_host_template sis_sht = { .dma_boundary = ATA_DMA_BOUNDARY, .slave_configure = ata_scsi_slave_config, .bios_param = ata_std_bios_param, - .ordered_flush = 1, }; static const struct ata_port_operations sis_ops = { diff --git a/drivers/scsi/sata_svw.c b/drivers/scsi/sata_svw.c index 6e7f7c83a75..668373590aa 100644 --- a/drivers/scsi/sata_svw.c +++ b/drivers/scsi/sata_svw.c @@ -303,7 +303,6 @@ static struct scsi_host_template k2_sata_sht = { .proc_info = k2_sata_proc_info, #endif .bios_param = ata_std_bios_param, - .ordered_flush = 1, }; diff --git a/drivers/scsi/sata_sx4.c b/drivers/scsi/sata_sx4.c index 94b253b80da..bc87c16c80d 100644 --- a/drivers/scsi/sata_sx4.c +++ b/drivers/scsi/sata_sx4.c @@ -194,7 +194,6 @@ static struct scsi_host_template pdc_sata_sht = { .dma_boundary = ATA_DMA_BOUNDARY, .slave_configure = ata_scsi_slave_config, .bios_param = ata_std_bios_param, - .ordered_flush = 1, }; static const struct ata_port_operations pdc_20621_ops = { diff --git a/drivers/scsi/sata_uli.c b/drivers/scsi/sata_uli.c index b2422a0f25c..9635ca70097 100644 --- a/drivers/scsi/sata_uli.c +++ b/drivers/scsi/sata_uli.c @@ -87,7 +87,6 @@ static struct scsi_host_template uli_sht = { .dma_boundary = ATA_DMA_BOUNDARY, .slave_configure = ata_scsi_slave_config, .bios_param = ata_std_bios_param, - .ordered_flush = 1, }; static const struct ata_port_operations uli_ops = { diff --git a/drivers/scsi/sata_via.c b/drivers/scsi/sata_via.c index c76215692da..6d5b0a794cf 100644 --- a/drivers/scsi/sata_via.c +++ b/drivers/scsi/sata_via.c @@ -106,7 +106,6 @@ static struct scsi_host_template svia_sht = { .dma_boundary = ATA_DMA_BOUNDARY, .slave_configure = ata_scsi_slave_config, .bios_param = ata_std_bios_param, - .ordered_flush = 1, }; static const struct ata_port_operations svia_sata_ops = { diff --git a/drivers/scsi/sata_vsc.c b/drivers/scsi/sata_vsc.c index fcfa486965b..2e2c3b7acb0 100644 --- a/drivers/scsi/sata_vsc.c +++ b/drivers/scsi/sata_vsc.c @@ -235,7 +235,6 @@ static struct scsi_host_template vsc_sata_sht = { .dma_boundary = ATA_DMA_BOUNDARY, .slave_configure = ata_scsi_slave_config, .bios_param = ata_std_bios_param, - .ordered_flush = 1, }; diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index a7f3f0c84db..ba93d6e66d4 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -308,7 +308,7 @@ struct scsi_io_context { static kmem_cache_t *scsi_io_context_cache; -static void scsi_end_async(struct request *req) +static void scsi_end_async(struct request *req, int uptodate) { struct scsi_io_context *sioc = req->end_io_data; @@ -791,7 +791,7 @@ static struct scsi_cmnd *scsi_end_request(struct scsi_cmnd *cmd, int uptodate, spin_lock_irqsave(q->queue_lock, flags); if (blk_rq_tagged(req)) blk_queue_end_tag(q, req); - end_that_request_last(req); + end_that_request_last(req, uptodate); spin_unlock_irqrestore(q->queue_lock, flags); /* @@ -932,9 +932,6 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes, int sense_valid = 0; int sense_deferred = 0; - if (blk_complete_barrier_rq(q, req, good_bytes >> 9)) - return; - /* * Free up any indirection buffers we allocated for DMA purposes. * For the case of a READ, we need to copy the data out of the @@ -1199,38 +1196,6 @@ static int scsi_init_io(struct scsi_cmnd *cmd) return BLKPREP_KILL; } -static int scsi_prepare_flush_fn(request_queue_t *q, struct request *rq) -{ - struct scsi_device *sdev = q->queuedata; - struct scsi_driver *drv; - - if (sdev->sdev_state == SDEV_RUNNING) { - drv = *(struct scsi_driver **) rq->rq_disk->private_data; - - if (drv->prepare_flush) - return drv->prepare_flush(q, rq); - } - - return 0; -} - -static void scsi_end_flush_fn(request_queue_t *q, struct request *rq) -{ - struct scsi_device *sdev = q->queuedata; - struct request *flush_rq = rq->end_io_data; - struct scsi_driver *drv; - - if (flush_rq->errors) { - printk("scsi: barrier error, disabling flush support\n"); - blk_queue_ordered(q, QUEUE_ORDERED_NONE); - } - - if (sdev->sdev_state == SDEV_RUNNING) { - drv = *(struct scsi_driver **) rq->rq_disk->private_data; - drv->end_flush(q, rq); - } -} - static int scsi_issue_flush_fn(request_queue_t *q, struct gendisk *disk, sector_t *error_sector) { @@ -1703,17 +1668,6 @@ struct request_queue *scsi_alloc_queue(struct scsi_device *sdev) blk_queue_segment_boundary(q, shost->dma_boundary); blk_queue_issue_flush_fn(q, scsi_issue_flush_fn); - /* - * ordered tags are superior to flush ordering - */ - if (shost->ordered_tag) - blk_queue_ordered(q, QUEUE_ORDERED_TAG); - else if (shost->ordered_flush) { - blk_queue_ordered(q, QUEUE_ORDERED_FLUSH); - q->prepare_flush_fn = scsi_prepare_flush_fn; - q->end_flush_fn = scsi_end_flush_fn; - } - if (!shost->use_clustering) clear_bit(QUEUE_FLAG_CLUSTER, &q->queue_flags); return q; diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index 3d3ad7d1b77..32d4d8d7b9f 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -102,6 +102,7 @@ struct scsi_disk { u8 write_prot; unsigned WCE : 1; /* state of disk WCE bit */ unsigned RCD : 1; /* state of disk RCD bit, unused */ + unsigned DPOFUA : 1; /* state of disk DPOFUA bit */ }; static DEFINE_IDR(sd_index_idr); @@ -121,8 +122,7 @@ static void sd_shutdown(struct device *dev); static void sd_rescan(struct device *); static int sd_init_command(struct scsi_cmnd *); static int sd_issue_flush(struct device *, sector_t *); -static void sd_end_flush(request_queue_t *, struct request *); -static int sd_prepare_flush(request_queue_t *, struct request *); +static void sd_prepare_flush(request_queue_t *, struct request *); static void sd_read_capacity(struct scsi_disk *sdkp, char *diskname, unsigned char *buffer); @@ -137,8 +137,6 @@ static struct scsi_driver sd_template = { .rescan = sd_rescan, .init_command = sd_init_command, .issue_flush = sd_issue_flush, - .prepare_flush = sd_prepare_flush, - .end_flush = sd_end_flush, }; /* @@ -346,6 +344,7 @@ static int sd_init_command(struct scsi_cmnd * SCpnt) if (block > 0xffffffff) { SCpnt->cmnd[0] += READ_16 - READ_6; + SCpnt->cmnd[1] |= blk_fua_rq(rq) ? 0x8 : 0; SCpnt->cmnd[2] = sizeof(block) > 4 ? (unsigned char) (block >> 56) & 0xff : 0; SCpnt->cmnd[3] = sizeof(block) > 4 ? (unsigned char) (block >> 48) & 0xff : 0; SCpnt->cmnd[4] = sizeof(block) > 4 ? (unsigned char) (block >> 40) & 0xff : 0; @@ -365,6 +364,7 @@ static int sd_init_command(struct scsi_cmnd * SCpnt) this_count = 0xffff; SCpnt->cmnd[0] += READ_10 - READ_6; + SCpnt->cmnd[1] |= blk_fua_rq(rq) ? 0x8 : 0; SCpnt->cmnd[2] = (unsigned char) (block >> 24) & 0xff; SCpnt->cmnd[3] = (unsigned char) (block >> 16) & 0xff; SCpnt->cmnd[4] = (unsigned char) (block >> 8) & 0xff; @@ -373,6 +373,17 @@ static int sd_init_command(struct scsi_cmnd * SCpnt) SCpnt->cmnd[7] = (unsigned char) (this_count >> 8) & 0xff; SCpnt->cmnd[8] = (unsigned char) this_count & 0xff; } else { + if (unlikely(blk_fua_rq(rq))) { + /* + * This happens only if this drive failed + * 10byte rw command with ILLEGAL_REQUEST + * during operation and thus turned off + * use_10_for_rw. + */ + printk(KERN_ERR "sd: FUA write on READ/WRITE(6) drive\n"); + return 0; + } + SCpnt->cmnd[1] |= (unsigned char) ((block >> 16) & 0x1f); SCpnt->cmnd[2] = (unsigned char) ((block >> 8) & 0xff); SCpnt->cmnd[3] = (unsigned char) block & 0xff; @@ -729,42 +740,13 @@ static int sd_issue_flush(struct device *dev, sector_t *error_sector) return ret; } -static void sd_end_flush(request_queue_t *q, struct request *flush_rq) -{ - struct request *rq = flush_rq->end_io_data; - struct scsi_cmnd *cmd = rq->special; - unsigned int bytes = rq->hard_nr_sectors << 9; - - if (!flush_rq->errors) { - spin_unlock(q->queue_lock); - scsi_io_completion(cmd, bytes, 0); - spin_lock(q->queue_lock); - } else if (blk_barrier_postflush(rq)) { - spin_unlock(q->queue_lock); - scsi_io_completion(cmd, 0, bytes); - spin_lock(q->queue_lock); - } else { - /* - * force journal abort of barriers - */ - end_that_request_first(rq, -EOPNOTSUPP, rq->hard_nr_sectors); - end_that_request_last(rq); - } -} - -static int sd_prepare_flush(request_queue_t *q, struct request *rq) +static void sd_prepare_flush(request_queue_t *q, struct request *rq) { - struct scsi_device *sdev = q->queuedata; - struct scsi_disk *sdkp = dev_get_drvdata(&sdev->sdev_gendev); - - if (!sdkp || !sdkp->WCE) - return 0; - memset(rq->cmd, 0, sizeof(rq->cmd)); - rq->flags |= REQ_BLOCK_PC | REQ_SOFTBARRIER; + rq->flags |= REQ_BLOCK_PC; rq->timeout = SD_TIMEOUT; rq->cmd[0] = SYNCHRONIZE_CACHE; - return 1; + rq->cmd_len = 10; } static void sd_rescan(struct device *dev) @@ -1427,10 +1409,18 @@ sd_read_cache_type(struct scsi_disk *sdkp, char *diskname, sdkp->RCD = 0; } + sdkp->DPOFUA = (data.device_specific & 0x10) != 0; + if (sdkp->DPOFUA && !sdkp->device->use_10_for_rw) { + printk(KERN_NOTICE "SCSI device %s: uses " + "READ/WRITE(6), disabling FUA\n", diskname); + sdkp->DPOFUA = 0; + } + ct = sdkp->RCD + 2*sdkp->WCE; - printk(KERN_NOTICE "SCSI device %s: drive cache: %s\n", - diskname, types[ct]); + printk(KERN_NOTICE "SCSI device %s: drive cache: %s%s\n", + diskname, types[ct], + sdkp->DPOFUA ? " w/ FUA" : ""); return; } @@ -1462,6 +1452,7 @@ static int sd_revalidate_disk(struct gendisk *disk) struct scsi_disk *sdkp = scsi_disk(disk); struct scsi_device *sdp = sdkp->device; unsigned char *buffer; + unsigned ordered; SCSI_LOG_HLQUEUE(3, printk("sd_revalidate_disk: disk=%s\n", disk->disk_name)); @@ -1498,7 +1489,21 @@ static int sd_revalidate_disk(struct gendisk *disk) sd_read_write_protect_flag(sdkp, disk->disk_name, buffer); sd_read_cache_type(sdkp, disk->disk_name, buffer); } - + + /* + * We now have all cache related info, determine how we deal + * with ordered requests. Note that as the current SCSI + * dispatch function can alter request order, we cannot use + * QUEUE_ORDERED_TAG_* even when ordered tag is supported. + */ + if (sdkp->WCE) + ordered = sdkp->DPOFUA + ? QUEUE_ORDERED_DRAIN_FUA : QUEUE_ORDERED_DRAIN_FLUSH; + else + ordered = QUEUE_ORDERED_DRAIN; + + blk_queue_ordered(sdkp->disk->queue, ordered, sd_prepare_flush); + set_capacity(disk, sdkp->capacity); kfree(buffer); @@ -1598,6 +1603,7 @@ static int sd_probe(struct device *dev) strcpy(gd->devfs_name, sdp->devfs_name); gd->private_data = &sdkp->driver; + gd->queue = sdkp->device->request_queue; sd_revalidate_disk(gd); @@ -1605,7 +1611,6 @@ static int sd_probe(struct device *dev) gd->flags = GENHD_FL_DRIVERFS; if (sdp->removable) gd->flags |= GENHD_FL_REMOVABLE; - gd->queue = sdkp->device->request_queue; dev_set_drvdata(dev, sdkp); add_disk(gd); |