diff options
| author | Jeff Garzik <jgarzik@pobox.com> | 2005-09-28 12:11:15 -0400 |
|---|---|---|
| committer | Jeff Garzik <jgarzik@pobox.com> | 2005-09-28 12:11:15 -0400 |
| commit | 64f09c98d7fce21dcb8da9f248e4159eb1ec245e (patch) | |
| tree | e03ed75665d536438fcb79b468a439caacd3d7dc /include/linux | |
| parent | 14be71f4c5c5ad1e222c5202ee6d234e9c8828b7 (diff) | |
| parent | 98ed72deebfd2b55b7e1bb94c8175b1169999212 (diff) | |
/spare/repo/libata-dev branch 'chs-support'
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/ata.h | 14 | ||||
| -rw-r--r-- | include/linux/libata.h | 6 |
2 files changed, 20 insertions, 0 deletions
diff --git a/include/linux/ata.h b/include/linux/ata.h index a5b74efab06..85169ea9eb0 100644 --- a/include/linux/ata.h +++ b/include/linux/ata.h @@ -132,6 +132,7 @@ enum { ATA_CMD_PACKET = 0xA0, ATA_CMD_VERIFY = 0x40, ATA_CMD_VERIFY_EXT = 0x42, + ATA_CMD_INIT_DEV_PARAMS = 0x91, /* SETFEATURES stuff */ SETFEATURES_XFER = 0x03, @@ -181,6 +182,7 @@ enum { ATA_TFLAG_ISADDR = (1 << 1), /* enable r/w to nsect/lba regs */ ATA_TFLAG_DEVICE = (1 << 2), /* enable r/w to device reg */ ATA_TFLAG_WRITE = (1 << 3), /* data dir: host->dev==1 (write) */ + ATA_TFLAG_LBA = (1 << 4), /* enable LBA */ }; enum ata_tf_protocols { @@ -250,6 +252,18 @@ struct ata_taskfile { ((u64) (id)[(n) + 1] << 16) | \ ((u64) (id)[(n) + 0]) ) +static inline int ata_id_current_chs_valid(u16 *id) +{ + /* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command + has not been issued to the device then the values of + id[54] to id[56] are vendor specific. */ + return (id[53] & 0x01) && /* Current translation valid */ + id[54] && /* cylinders in current translation */ + id[55] && /* heads in current translation */ + id[55] <= 16 && + id[56]; /* sectors in current translation */ +} + static inline int atapi_cdb_len(u16 *dev_id) { u16 tmp = dev_id[0] & 0x3; diff --git a/include/linux/libata.h b/include/linux/libata.h index bb2d916bce4..4739a75b983 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -97,6 +97,7 @@ enum { ATA_DFLAG_LBA48 = (1 << 0), /* device supports LBA48 */ ATA_DFLAG_PIO = (1 << 1), /* device currently in PIO mode */ ATA_DFLAG_LOCK_SECTORS = (1 << 2), /* don't adjust max_sectors */ + ATA_DFLAG_LBA = (1 << 3), /* device supports LBA */ ATA_DEV_UNKNOWN = 0, /* unknown device */ ATA_DEV_ATA = 1, /* ATA device */ @@ -282,6 +283,11 @@ struct ata_device { u8 xfer_protocol; /* taskfile xfer protocol */ u8 read_cmd; /* opcode to use on read */ u8 write_cmd; /* opcode to use on write */ + + /* for CHS addressing */ + u16 cylinders; /* Number of cylinders */ + u16 heads; /* Number of heads */ + u16 sectors; /* Number of sectors per track */ }; struct ata_port { |