diff options
| author |   Hannes Reinecke <hare@suse.de> | 2015-03-27 16:46:35 +0100 |
|---|---|---|
| committer |   Tejun Heo <tj@kernel.org> | 2015-03-27 11:59:22 -0400 |
| commit | 42b966fbf35da9c87f08d98f9b8978edf9e717cf (patch) | |
| tree | a7fd32da1b3a746cab71966d42a08aeeb0d7203d /drivers/ata | |
| parent | libata: use status bit definitions in ata_dump_status() (diff) | |
| download | linux-dev-42b966fbf35da9c87f08d98f9b8978edf9e717cf.tar.xz linux-dev-42b966fbf35da9c87f08d98f9b8978edf9e717cf.zip | |
libata: Implement NCQ autosense
Some newer devices support NCQ autosense (cf ACS-4), so we should
be using it to retrieve the sense code and speed up recovery.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'drivers/ata')
| -rw-r--r-- | drivers/ata/libata-eh.c | 18 | ||||
| -rw-r--r-- | drivers/ata/libata-scsi.c | 9 | ||||
| -rw-r--r-- | drivers/ata/libata.h | 1 |
3 files changed, 26 insertions, 2 deletions
diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c index 50ffd4e98978..c9b19949708c 100644 --- a/drivers/ata/libata-eh.c +++ b/drivers/ata/libata-eh.c @@ -1580,6 +1580,8 @@ static int ata_eh_read_log_10h(struct ata_device *dev, tf->hob_lbah = buf[10]; tf->nsect = buf[12]; tf->hob_nsect = buf[13]; + if (ata_id_has_ncq_autosense(dev->id)) + tf->auxiliary = buf[14] << 16 | buf[15] << 8 | buf[16]; return 0; } @@ -1777,6 +1779,18 @@ void ata_eh_analyze_ncq_error(struct ata_link *link) memcpy(&qc->result_tf, &tf, sizeof(tf)); qc->result_tf.flags = ATA_TFLAG_ISADDR | ATA_TFLAG_LBA | ATA_TFLAG_LBA48; qc->err_mask |= AC_ERR_DEV | AC_ERR_NCQ; + if (qc->result_tf.auxiliary) { + char sense_key, asc, ascq; + + sense_key = (qc->result_tf.auxiliary >> 16) & 0xff; + asc = (qc->result_tf.auxiliary >> 8) & 0xff; + ascq = qc->result_tf.auxiliary & 0xff; + ata_dev_dbg(dev, "NCQ Autosense %02x/%02x/%02x\n", + sense_key, asc, ascq); + ata_scsi_set_sense(qc->scsicmd, sense_key, asc, ascq); + qc->flags |= ATA_QCFLAG_SENSE_VALID; + } + ehc->i.err_mask &= ~AC_ERR_DEV; } @@ -1806,6 +1820,10 @@ static unsigned int ata_eh_analyze_tf(struct ata_queued_cmd *qc, return ATA_EH_RESET; } + /* Set by NCQ autosense */ + if (qc->flags & ATA_QCFLAG_SENSE_VALID) + return 0; + if (stat & (ATA_ERR | ATA_DF)) qc->err_mask |= AC_ERR_DEV; else diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index bb57d81083ca..3ac5be3acdbe 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -270,8 +270,11 @@ DEVICE_ATTR(unload_heads, S_IRUGO | S_IWUSR, ata_scsi_park_show, ata_scsi_park_store); EXPORT_SYMBOL_GPL(dev_attr_unload_heads); -static void ata_scsi_set_sense(struct scsi_cmnd *cmd, u8 sk, u8 asc, u8 ascq) +void ata_scsi_set_sense(struct scsi_cmnd *cmd, u8 sk, u8 asc, u8 ascq) { + if (!cmd) + return; + cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; scsi_build_sense_buffer(0, cmd->sense_buffer, sk, asc, ascq); @@ -1777,7 +1780,9 @@ static void ata_scsi_qc_complete(struct ata_queued_cmd *qc) ((cdb[2] & 0x20) || need_sense)) { ata_gen_passthru_sense(qc); } else { - if (!need_sense) { + if (qc->flags & ATA_QCFLAG_SENSE_VALID) { + cmd->result = SAM_STAT_CHECK_CONDITION; + } else if (!need_sense) { cmd->result = SAM_STAT_GOOD; } else { /* TODO: decide which descriptor format to use diff --git a/drivers/ata/libata.h b/drivers/ata/libata.h index f840ca18a7c0..8cfdd9616d16 100644 --- a/drivers/ata/libata.h +++ b/drivers/ata/libata.h @@ -137,6 +137,7 @@ extern int ata_scsi_add_hosts(struct ata_host *host, struct scsi_host_template *sht); extern void ata_scsi_scan_host(struct ata_port *ap, int sync); extern int ata_scsi_offline_dev(struct ata_device *dev); +extern void ata_scsi_set_sense(struct scsi_cmnd *cmd, u8 sk, u8 asc, u8 ascq); extern void ata_scsi_media_change_notify(struct ata_device *dev); extern void ata_scsi_hotplug(struct work_struct *work); extern void ata_schedule_scsi_eh(struct Scsi_Host *shost); |