redonkable/remarkable-linux
redonkable/remarkable-linux
1
0
Fork 0
Code Releases Activity

libata-scsi: Update SATL for ZAC drives

Browse source 
ZAC (zoned-access command) drives translate into ZBC (Zoned block
command) device type for SCSI. So implement the correct mappings
into libata-scsi and update the SCSI command set versions.

Acked-by: Christoph Hellwig <hch@lst.de>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Hannes Reinecke 2014-11-05 13:08:22 +01:00 committed by Tejun Heo
parent 9162c6579b
commit f9ca5ab832
1 changed files with 24 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

25
drivers/ata/libata-scsi.c
View file

@ -1969,6 +1969,7 @@ static void ata_scsi_rbuf_fill(struct ata_scsi_args *args,
static unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf)
{
const u8 versions[] = {
0x00,
0x60, /* SAM-3 (no version claimed) */
0x03,
@ -1977,6 +1978,20 @@ static unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf)
0x02,
0x60 /* SPC-3 (no version claimed) */
};
const u8 versions_zbc[] = {
0x00,
0xA0, /* SAM-5 (no version claimed) */
0x04,
0xC0, /* SBC-3 (no version claimed) */
0x04,
0x60, /* SPC-4 (no version claimed) */
0x60,
0x20, /* ZBC (no version claimed) */
};
u8 hdr[] = {
TYPE_DISK,
0,
@ -1991,6 +2006,11 @@ static unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf)
if (ata_id_removeable(args->id))
hdr[1] |= (1 << 7);
if (args->dev->class == ATA_DEV_ZAC) {
hdr[0] = TYPE_ZBC;
hdr[2] = 0x6; /* ZBC is defined in SPC-4 */
}
memcpy(rbuf, hdr, sizeof(hdr));
memcpy(&rbuf[8], "ATA ", 8);
ata_id_string(args->id, &rbuf[16], ATA_ID_PROD, 16);
@ -2003,7 +2023,10 @@ static unsigned int ata_scsiop_inq_std(struct ata_scsi_args *args, u8 *rbuf)
if (rbuf[32] == 0 || rbuf[32] == ' ')
memcpy(&rbuf[32], "n/a ", 4);
memcpy(rbuf + 59, versions, sizeof(versions));
if (args->dev->class == ATA_DEV_ZAC)
memcpy(rbuf + 58, versions_zbc, sizeof(versions_zbc));
else
memcpy(rbuf + 58, versions, sizeof(versions));
return 0;
}