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Commit 1e9dbc92 authored by Matthew Wilcox's avatar Matthew Wilcox Committed by Jeff Garzik
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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: default avatarMatthew Wilcox <willy@linux.intel.com>
Signed-off-by: default avatarJeff Garzik <jgarzik@redhat.com>
parent 6ad67403

drivers/ata/libata-scsi.c

+19 −1
Original line number Diff line number Diff line
@@ -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;