diff options
| author | Martin K. Petersen <martin.petersen@oracle.com> | 2010-09-10 01:23:18 -0400 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@redhat.com> | 2010-10-21 20:21:05 -0400 |
| commit | 02e0a60477d839b8f8f974790192f5230f2371d2 (patch) | |
| tree | 4efb429536201d93a290a17a8806e269cc59fc38 /drivers | |
| parent | 9950110cf0f79db91c0103876f3a58c9069243eb (diff) | |
libata: Signal that our SATL supports WRITE SAME(16) with UNMAP
Until now identifying that a device supports WRITE SAME(16) with the
UNMAP bit set has been black magic. Implement support for the SBC-3
Thin Provisioning VPD page and set the TPWS bit.
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/ata/libata-scsi.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index 56f6224fd6e..d050e073e57 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -1972,6 +1972,7 @@ static unsigned int ata_scsiop_inq_00(struct ata_scsi_args *args, u8 *rbuf) 0x89, /* page 0x89, ata info page */ 0xb0, /* page 0xb0, block limits page */ 0xb1, /* page 0xb1, block device characteristics page */ + 0xb2, /* page 0xb2, thin provisioning page */ }; rbuf[3] = sizeof(pages); /* number of supported VPD pages */ @@ -2140,6 +2141,16 @@ static unsigned int ata_scsiop_inq_b1(struct ata_scsi_args *args, u8 *rbuf) return 0; } +static unsigned int ata_scsiop_inq_b2(struct ata_scsi_args *args, u8 *rbuf) +{ + /* SCSI Thin Provisioning VPD page: SBC-3 rev 22 or later */ + rbuf[1] = 0xb2; + rbuf[3] = 0x4; + rbuf[5] = 1 << 6; /* TPWS */ + + return 0; +} + /** * ata_scsiop_noop - Command handler that simply returns success. * @args: device IDENTIFY data / SCSI command of interest. @@ -3252,6 +3263,9 @@ void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd, case 0xb1: ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b1); break; + case 0xb2: + ata_scsi_rbuf_fill(&args, ata_scsiop_inq_b2); + break; default: ata_scsi_invalid_field(cmd, done); break; |