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ata: Handle ATA NCQ NO-DATA commands correctly

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Add a new taskfile protocol ATA_PROT_NCQ_NODATA to handle
ATA NCQ NO-DATA commands correctly.
And fixup ata_scsi_zbc_out_xlat() to use it.

Signed-off-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Hannes Reinecke 2016-07-14 09:05:48 +09:00 committed by Tejun Heo
parent 5b51ba6178
commit 5b844b63dd
6 changed files with 12 additions and 2 deletions
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3
drivers/ata/libata-eh.c
View File

@ -2611,7 +2611,8 @@ static void ata_eh_link_report(struct ata_link *link)
[ATA_PROT_NODATA] = "nodata",
[ATA_PROT_PIO] = "pio",
[ATA_PROT_DMA] = "dma",
[ATA_PROT_NCQ] = "ncq",
[ATA_PROT_NCQ] = "ncq dma",
[ATA_PROT_NCQ_NODATA] = "ncq nodata",
[ATAPI_PROT_NODATA] = "nodata",
[ATAPI_PROT_PIO] = "pio",
[ATAPI_PROT_DMA] = "dma",

5
drivers/ata/libata-scsi.c
View File

@ -3082,6 +3082,9 @@ static unsigned int ata_scsi_pass_thru(struct ata_queued_cmd *qc)
goto invalid_fld;
}
if (ata_is_ncq(tf->protocol) && (cdb[2] & 0x3) == 0)
tf->protocol = ATA_PROT_NCQ_NODATA;
/* enable LBA */
tf->flags |= ATA_TFLAG_LBA;
@ -3548,7 +3551,7 @@ static unsigned int ata_scsi_zbc_out_xlat(struct ata_queued_cmd *qc)
if (ata_ncq_enabled(qc->dev) &&
ata_fpdma_zac_mgmt_out_supported(qc->dev)) {
tf->protocol = ATA_PROT_NCQ;
tf->protocol = ATA_PROT_NCQ_NODATA;
tf->command = ATA_CMD_NCQ_NON_DATA;
tf->hob_nsect = ATA_SUBCMD_NCQ_NON_DATA_ZAC_MGMT_OUT;
tf->nsect = qc->tag << 3;

2
drivers/ata/sata_dwc_460ex.c
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@ -290,6 +290,8 @@ static const char *get_prot_descript(u8 protocol)
return "ATA DMA";
case ATA_PROT_NCQ:
return "ATA NCQ";
case ATA_PROT_NCQ_NODATA:
return "ATA NCQ no data";
case ATAPI_PROT_NODATA:
return "ATAPI no data";
case ATAPI_PROT_PIO:

1
include/linux/ata.h
View File

@ -530,6 +530,7 @@ enum ata_tf_protocols {
ATA_PROT_PIO, /* PIO data xfer */
ATA_PROT_DMA, /* DMA */
ATA_PROT_NCQ, /* NCQ */
ATA_PROT_NCQ_NODATA, /* NCQ no data */
ATAPI_PROT_NODATA, /* packet command, no data */
ATAPI_PROT_PIO, /* packet command, PIO data xfer*/
ATAPI_PROT_DMA, /* packet command with special DMA sauce */

2
include/linux/libata.h
View File

@ -1053,6 +1053,8 @@ static inline unsigned int ata_prot_flags(u8 prot)
return ATA_PROT_FLAG_DMA;
case ATA_PROT_NCQ:
return ATA_PROT_FLAG_DMA | ATA_PROT_FLAG_NCQ;
case ATA_PROT_NCQ_NODATA:
return ATA_PROT_FLAG_NCQ;
case ATAPI_PROT_NODATA:
return ATA_PROT_FLAG_ATAPI;
case ATAPI_PROT_PIO:

1
include/trace/events/libata.h
View File

@ -126,6 +126,7 @@
ata_protocol_name(ATA_PROT_PIO), \
ata_protocol_name(ATA_PROT_DMA), \
ata_protocol_name(ATA_PROT_NCQ), \
ata_protocol_name(ATA_PROT_NCQ_NODATA), \
ata_protocol_name(ATAPI_PROT_NODATA), \
ata_protocol_name(ATAPI_PROT_PIO), \
ata_protocol_name(ATAPI_PROT_DMA))