diff options
| author | Alan Cox <alan@lxorguk.ukuu.org.uk> | 2006-10-10 14:28:11 -0700 |
|---|---|---|
| committer | Jeff Garzik <jeff@garzik.org> | 2006-12-01 22:40:25 -0500 |
| commit | fc085150b491bfc186efbca90a14cf907a3060a9 (patch) | |
| tree | b5bf8b6eb6d0dabd8699e6b41c239619590659e2 /include/linux/ata.h | |
| parent | 2f27ce03628acdb81ead4abe914c713e04a3229e (diff) | |
| download | lwn-fc085150b491bfc186efbca90a14cf907a3060a9.tar.gz lwn-fc085150b491bfc186efbca90a14cf907a3060a9.zip | |
[PATCH] libata: add 40pin "short" cable support, honour drive side speed detection
[deweerdt@free.fr: build fix]
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Frederik Deweerdt <deweerdt@free.fr>
Cc: Tejun Heo <htejun@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Diffstat (limited to 'include/linux/ata.h')
| -rw-r--r-- | include/linux/ata.h | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/include/linux/ata.h b/include/linux/ata.h index d89441907024..1df941648a57 100644 --- a/include/linux/ata.h +++ b/include/linux/ata.h @@ -200,8 +200,9 @@ enum { ATA_CBL_NONE = 0, ATA_CBL_PATA40 = 1, ATA_CBL_PATA80 = 2, - ATA_CBL_PATA_UNK = 3, - ATA_CBL_SATA = 4, + ATA_CBL_PATA40_SHORT = 3, /* 40 wire cable to high UDMA spec */ + ATA_CBL_PATA_UNK = 4, + ATA_CBL_SATA = 5, /* SATA Status and Control Registers */ SCR_STATUS = 0, @@ -342,6 +343,15 @@ static inline int ata_id_is_cfa(const u16 *id) return 0; } +static inline int ata_drive_40wire(const u16 *dev_id) +{ + if (ata_id_major_version(dev_id) >= 5 && ata_id_is_sata(dev_id)) + return 0; /* SATA */ + if (dev_id[93] & 0x4000) + return 0; /* 80 wire */ + return 1; +} + static inline int atapi_cdb_len(const u16 *dev_id) { u16 tmp = dev_id[0] & 0x3; |