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[PATCH] libata: add ATA_QCFLAG_IO

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Add a new qc flag ATA_QCFLAG_IO.  This flag gets set for normal IO
commands originating from SCSI midlayer.  This information will be
used by EH to determine transfer speed reconfiguration.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Tejun Heo 2006-04-02 18:51:53 +09:00 committed by Jeff Garzik
parent e8384607d4
commit 2719736779
2 changed files with 3 additions and 1 deletions
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1
drivers/scsi/libata-scsi.c
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@ -1188,6 +1188,7 @@ static unsigned int ata_scsi_rw_xlat(struct ata_queued_cmd *qc, const u8 *scsicm
u64 block; u64 block;
u32 n_block; u32 n_block;
qc->flags |= ATA_QCFLAG_IO;
tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE; tf->flags |= ATA_TFLAG_ISADDR | ATA_TFLAG_DEVICE;
if (scsicmd[0] == WRITE_10 || scsicmd[0] == WRITE_6 || if (scsicmd[0] == WRITE_10 || scsicmd[0] == WRITE_6 ||

3
include/linux/libata.h
View File

@ -161,7 +161,8 @@ enum {
ATA_QCFLAG_SG = (1 << 1), /* have s/g table? */ ATA_QCFLAG_SG = (1 << 1), /* have s/g table? */
ATA_QCFLAG_SINGLE = (1 << 2), /* no s/g, just a single buffer */ ATA_QCFLAG_SINGLE = (1 << 2), /* no s/g, just a single buffer */
ATA_QCFLAG_DMAMAP = ATA_QCFLAG_SG | ATA_QCFLAG_SINGLE, ATA_QCFLAG_DMAMAP = ATA_QCFLAG_SG | ATA_QCFLAG_SINGLE,
ATA_QCFLAG_EH_SCHEDULED = (1 << 3), /* EH scheduled */ ATA_QCFLAG_IO = (1 << 3), /* standard IO command */
ATA_QCFLAG_EH_SCHEDULED = (1 << 4), /* EH scheduled */
/* host set flags */ /* host set flags */
ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host_set only */ ATA_HOST_SIMPLEX = (1 << 0), /* Host is simplex, one DMA channel per host_set only */