diff options
| author | Matthew Wilcox <matthew@wil.cx> | 2008-06-19 13:13:38 -0600 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2008-07-14 15:59:33 -0400 |
| commit | 1e9dbc9291738149577cc488fd441f061815e02e (patch) | |
| tree | 34d8cf8a8f339d0fad6c7741aa3bee2d033bac70 /drivers | |
| parent | 6ad67403da47e833d9e418caf7f28295c9472e11 (diff) | |
| download | lwn-1e9dbc9291738149577cc488fd441f061815e02e.tar.gz lwn-1e9dbc9291738149577cc488fd441f061815e02e.zip | |
[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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/ata/libata-scsi.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index b578b11caa7b..479c29e2e25c 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -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; |