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libata-scsi: generate correct ATA pass-through sense

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Generate ATA pass-through sense for both fixed and descriptor
format sense.

Signed-off-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Hannes Reinecke 2016-04-04 11:44:02 +02:00 committed by Tejun Heo
parent 3852e37382
commit 11093cb1ef
1 changed files with 58 additions and 33 deletions
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91
drivers/ata/libata-scsi.c
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@ -1016,43 +1016,68 @@ static void ata_gen_passthru_sense(struct ata_queued_cmd *qc)
&sense_key, &asc, &ascq, verbose);
ata_scsi_set_sense(cmd, sense_key, asc, ascq);
} else {
/* ATA PASS-THROUGH INFORMATION AVAILABLE */
ata_scsi_set_sense(cmd, RECOVERED_ERROR, 0, 0x1D);
/*
* ATA PASS-THROUGH INFORMATION AVAILABLE
* Always in descriptor format sense.
*/
scsi_build_sense_buffer(1, cmd->sense_buffer,
RECOVERED_ERROR, 0, 0x1D);
}
/*
* Sense data is current and format is descriptor.
*/
sb[0] = 0x72;
if ((cmd->sense_buffer[0] & 0x7f) >= 0x72) {
u8 len;
desc[0] = 0x09;
/* descriptor format */
len = sb[7];
desc = (char *)scsi_sense_desc_find(sb, len + 8, 9);
if (!desc) {
if (SCSI_SENSE_BUFFERSIZE < len + 14)
return;
sb[7] = len + 14;
desc = sb + 8 + len;
}
desc[0] = 9;
desc[1] = 12;
/*
* Copy registers into sense buffer.
*/
desc[2] = 0x00;
desc[3] = tf->feature; /* == error reg */
desc[5] = tf->nsect;
desc[7] = tf->lbal;
desc[9] = tf->lbam;
desc[11] = tf->lbah;
desc[12] = tf->device;
desc[13] = tf->command; /* == status reg */
/* set length of additional sense data */
sb[7] = 14;
desc[1] = 12;
/*
* Copy registers into sense buffer.
*/
desc[2] = 0x00;
desc[3] = tf->feature; /* == error reg */
desc[5] = tf->nsect;
desc[7] = tf->lbal;
desc[9] = tf->lbam;
desc[11] = tf->lbah;
desc[12] = tf->device;
desc[13] = tf->command; /* == status reg */
/*
* Fill in Extend bit, and the high order bytes
* if applicable.
*/
if (tf->flags & ATA_TFLAG_LBA48) {
desc[2] |= 0x01;
desc[4] = tf->hob_nsect;
desc[6] = tf->hob_lbal;
desc[8] = tf->hob_lbam;
desc[10] = tf->hob_lbah;
/*
* Fill in Extend bit, and the high order bytes
* if applicable.
*/
if (tf->flags & ATA_TFLAG_LBA48) {
desc[2] |= 0x01;
desc[4] = tf->hob_nsect;
desc[6] = tf->hob_lbal;
desc[8] = tf->hob_lbam;
desc[10] = tf->hob_lbah;
}
} else {
/* Fixed sense format */
desc[0] = tf->feature;
desc[1] = tf->command; /* status */
desc[2] = tf->device;
desc[3] = tf->nsect;
desc[0] = 0;
if (tf->flags & ATA_TFLAG_LBA48) {
desc[8] |= 0x80;
if (tf->hob_nsect)
desc[8] |= 0x40;
if (tf->hob_lbal || tf->hob_lbam || tf->hob_lbah)
desc[8] |= 0x20;
}
desc[9] = tf->lbal;
desc[10] = tf->lbam;
desc[11] = tf->lbah;
}
}