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[libata] Add support for VPD page b1 

SCSI VPD page b1 reports the nominal rotation speed and physical size
of the device.  Devices that conform to ATA-8 can return this information
in words 217 and 168 of the identify data.

Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
This commit is contained in:
Matthew Wilcox 2008-06-19 13:13:38 -06:00 committed by Jeff Garzik
parent 6ad67403da
commit 1e9dbc9291
1 changed files with 19 additions and 1 deletions
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20
drivers/ata/libata-scsi.c
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@ -1857,7 +1857,9 @@ static unsigned int ata_scsiop_inq_00(struct ata_scsi_args *args, u8 *rbuf)
const u8 pages[] = {
0x00, /* page 0x00, this page */
0x80, /* page 0x80, unit serial no page */
0x83 /* page 0x83, device ident page */
0x83, /* page 0x83, device ident page */
0x89, /* page 0x89, ata info page */
0xb1, /* page 0xb1, block device characteristics page */
};
rbuf[3] = sizeof(pages); /* number of supported VPD pages */
@ -1978,6 +1980,19 @@ static unsigned int ata_scsiop_inq_89(struct ata_scsi_args *args, u8 *rbuf)
return 0;
}
static unsigned int ata_scsiop_inq_b1(struct ata_scsi_args *args, u8 *rbuf)
{
rbuf[1] = 0xb1;
rbuf[3] = 0x3c;
if (ata_id_major_version(args->id) > 7) {
rbuf[4] = args->id[217] >> 8;
rbuf[5] = args->id[217];
rbuf[7] = args->id[168] & 0xf;
}
return 0;
}
/**
* ata_scsiop_noop - Command handler that simply returns success.
* @args: device IDENTIFY data / SCSI command of interest.
@ -2999,6 +3014,9 @@ void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd,
case 0x89:
ata_scsi_rbuf_fill(&args, ata_scsiop_inq_89);
break;
case 0xb1:
ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b1);
break;
default:
ata_scsi_invalid_field(cmd, done);
break;