diff options
| author | Hannes Reinecke <hare@suse.de> | 2011-03-07 08:56:44 +0100 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@pobox.com> | 2011-03-14 02:59:37 -0400 |
| commit | 6b3b9d73e08d8939aaf54f85bb47495171f49e20 (patch) | |
| tree | 585aa0ee0cee78b1fb773073712bae5fd2467d72 | |
| parent | 60a230e4a62be6837335911b09101bd8aeb7c95a (diff) | |
libata: Include WWN ID in inquiry VPD emulation
As per SAT-3 the WWN ID should be included in the VPD page 0x83
(device identification) emulation.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
| -rw-r--r-- | drivers/ata/libata-scsi.c | 11 | ||||
| -rw-r--r-- | include/linux/ata.h | 7 |
2 files changed, 18 insertions, 0 deletions
diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c index c11675f34b9..a8341999135 100644 --- a/drivers/ata/libata-scsi.c +++ b/drivers/ata/libata-scsi.c @@ -2056,6 +2056,17 @@ static unsigned int ata_scsiop_inq_83(struct ata_scsi_args *args, u8 *rbuf) ATA_ID_SERNO_LEN); num += ATA_ID_SERNO_LEN; + if (ata_id_has_wwn(args->id)) { + /* SAT defined lu world wide name */ + /* piv=0, assoc=lu, code_set=binary, designator=NAA */ + rbuf[num + 0] = 1; + rbuf[num + 1] = 3; + rbuf[num + 3] = ATA_ID_WWN_LEN; + num += 4; + ata_id_string(args->id, (unsigned char *) rbuf + num, + ATA_ID_WWN, ATA_ID_WWN_LEN); + num += ATA_ID_WWN_LEN; + } rbuf[3] = num - 4; /* page len (assume less than 256 bytes) */ return 0; } diff --git a/include/linux/ata.h b/include/linux/ata.h index 0c4929fa34d..198e1ea2b2e 100644 --- a/include/linux/ata.h +++ b/include/linux/ata.h @@ -89,6 +89,7 @@ enum { ATA_ID_SPG = 98, ATA_ID_LBA_CAPACITY_2 = 100, ATA_ID_SECTOR_SIZE = 106, + ATA_ID_WWN = 108, ATA_ID_LOGICAL_SECTOR_SIZE = 117, /* and 118 */ ATA_ID_LAST_LUN = 126, ATA_ID_DLF = 128, @@ -103,6 +104,7 @@ enum { ATA_ID_SERNO_LEN = 20, ATA_ID_FW_REV_LEN = 8, ATA_ID_PROD_LEN = 40, + ATA_ID_WWN_LEN = 8, ATA_PCI_CTL_OFS = 2, @@ -815,6 +817,11 @@ static inline int ata_id_has_unload(const u16 *id) return 0; } +static inline bool ata_id_has_wwn(const u16 *id) +{ + return (id[ATA_ID_CSF_DEFAULT] & 0xC100) == 0x4100; +} + static inline int ata_id_form_factor(const u16 *id) { u16 val = id[168]; |