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| author | Gwendal Grignou <gwendal@google.com> | 2013-01-18 19:56:43 +0100 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2013-02-20 23:13:17 +0100 |
| commit | 84a9a8cd9d0aa93c17e5815ab8a9cc4c0a765c63 (patch) | |
| tree | ac32afc022d5885e278b61a0f6eaf7730ccc2a92 /drivers/ata | |
| parent | [libata] Convert to devm_ioremap_resource() (diff) | |
| download | linux-84a9a8cd9d0aa93c17e5815ab8a9cc4c0a765c63.tar.xz linux-84a9a8cd9d0aa93c17e5815ab8a9cc4c0a765c63.zip | |
[libata] Set proper SK when CK_COND is set.
When the user application sends a ATA_12 or ATA_16 PASSTHROUGH
scsi command, put the task file register in the sense data with the
proper Sense Key. Instead of NO SENSE, set RECOVERED, as
specified in [SAT2]12.2.5 Table 92.
Tested:
Using udev ata_id to generate a passthrough command, IDENTIFY:
before:
sd 0:0:0:0: [sda] CDB: ATA command pass through(12)/Blank: \
a1 08 2e 00 01 00 00 00 00 ec 00 00
sd 0:0:0:0: [sda] Sense Key : No Sense [current] [descriptor]
Descriptor sense data with sense descriptors (in hex):
72 00 00 00 00 00 00 0e 09 0c 00 00 00 00 00 3f
00 18 00 a6 e0 50
after
sd 0:0:0:0: [sda] CDB: ATA command pass through(12)/Blank: \
a1 08 2e 00 01 00 00 00 00 ec 00 00
sd 0:0:0:0: [sda] Sense Key : Recovered Error [current] [descriptor]
Descriptor sense data with sense descriptors (in hex):
72 01 00 1d 00 00 00 0e 09 0c 00 00 00 01 00 00
00 00 00 00 00 50
Signed-off-by: Gwendal Grignou <gwendal@google.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/ata')
| -rw-r--r-- | drivers/ata/libata-scsi.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index 1ff018525e3b..318b41358187 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -933,7 +933,11 @@ static void ata_to_sense_error(unsigned id, u8 drv_stat, u8 drv_err, u8 *sk, * block specified for the ATA pass through commands. Regardless * of whether the command errored or not, return a sense * block. Copy all controller registers into the sense - * block. Clear sense key, ASC & ASCQ if there is no error. + * block. If there was no error, we get the request from an ATA + * passthrough command, so we use the following sense data: + * sk = RECOVERED ERROR + * asc,ascq = ATA PASS-THROUGH INFORMATION AVAILABLE + * * * LOCKING: * None. @@ -959,6 +963,10 @@ static void ata_gen_passthru_sense(struct ata_queued_cmd *qc) ata_to_sense_error(qc->ap->print_id, tf->command, tf->feature, &sb[1], &sb[2], &sb[3], verbose); sb[1] &= 0x0f; + } else { + sb[1] = RECOVERED_ERROR; + sb[2] = 0; + sb[3] = 0x1D; } /* @@ -1733,10 +1741,12 @@ static void ata_scsi_qc_complete(struct ata_queued_cmd *qc) /* For ATA pass thru (SAT) commands, generate a sense block if * user mandated it or if there's an error. Note that if we - * generate because the user forced us to, a check condition - * is generated and the ATA register values are returned + * generate because the user forced us to [CK_COND =1], a check + * condition is generated and the ATA register values are returned * whether the command completed successfully or not. If there - * was no error, SK, ASC and ASCQ will all be zero. + * was no error, we use the following sense data: + * sk = RECOVERED ERROR + * asc,ascq = ATA PASS-THROUGH INFORMATION AVAILABLE */ if (((cdb[0] == ATA_16) || (cdb[0] == ATA_12)) && ((cdb[2] & 0x20) || need_sense)) { |