diff options
| -rw-r--r-- | include/linux/ata.h | 122 |
1 files changed, 76 insertions, 46 deletions
diff --git a/include/linux/ata.h b/include/linux/ata.h index 1c622e2b0504..03fff6239b3c 100644 --- a/include/linux/ata.h +++ b/include/linux/ata.h @@ -46,18 +46,48 @@ enum { ATA_MAX_SECTORS_TAPE = 65535, ATA_ID_WORDS = 256, + ATA_ID_CONFIG = 0, + ATA_ID_CYLS = 1, + ATA_ID_HEADS = 3, + ATA_ID_SECTORS = 6, ATA_ID_SERNO = 10, + ATA_ID_BUF_SIZE = 21, ATA_ID_FW_REV = 23, ATA_ID_PROD = 27, + ATA_ID_MAX_MULTSECT = 47, + ATA_ID_DWORD_IO = 48, + ATA_ID_CAPABILITY = 49, ATA_ID_OLD_PIO_MODES = 51, + ATA_ID_OLD_DMA_MODES = 52, ATA_ID_FIELD_VALID = 53, + ATA_ID_CUR_CYLS = 54, + ATA_ID_CUR_HEADS = 55, + ATA_ID_CUR_SECTORS = 56, + ATA_ID_MULTSECT = 59, + ATA_ID_LBA_CAPACITY = 60, + ATA_ID_SWDMA_MODES = 62, ATA_ID_MWDMA_MODES = 63, ATA_ID_PIO_MODES = 64, ATA_ID_EIDE_DMA_MIN = 65, + ATA_ID_EIDE_DMA_TIME = 66, ATA_ID_EIDE_PIO = 67, ATA_ID_EIDE_PIO_IORDY = 68, - ATA_ID_UDMA_MODES = 88, + ATA_ID_QUEUE_DEPTH = 75, ATA_ID_MAJOR_VER = 80, + ATA_ID_COMMAND_SET_1 = 82, + ATA_ID_COMMAND_SET_2 = 83, + ATA_ID_CFSSE = 84, + ATA_ID_CFS_ENABLE_1 = 85, + ATA_ID_CFS_ENABLE_2 = 86, + ATA_ID_CSF_DEFAULT = 87, + ATA_ID_UDMA_MODES = 88, + ATA_ID_HW_CONFIG = 93, + ATA_ID_SPG = 98, + ATA_ID_LBA_CAPACITY_2 = 100, + ATA_ID_LAST_LUN = 126, + ATA_ID_DLF = 128, + ATA_ID_CSFO = 129, + ATA_ID_CFA_POWER = 160, ATA_ID_PIO4 = (1 << 1), ATA_ID_SERNO_LEN = 20, @@ -438,17 +468,17 @@ static inline int ata_is_data(u8 prot) /* * id tests */ -#define ata_id_is_ata(id) (((id)[0] & (1 << 15)) == 0) -#define ata_id_has_lba(id) ((id)[49] & (1 << 9)) -#define ata_id_has_dma(id) ((id)[49] & (1 << 8)) +#define ata_id_is_ata(id) (((id)[ATA_ID_CONFIG] & (1 << 15)) == 0) +#define ata_id_has_lba(id) ((id)[ATA_ID_CAPABILITY] & (1 << 9)) +#define ata_id_has_dma(id) ((id)[ATA_ID_CAPABILITY] & (1 << 8)) #define ata_id_has_ncq(id) ((id)[76] & (1 << 8)) -#define ata_id_queue_depth(id) (((id)[75] & 0x1f) + 1) -#define ata_id_removeable(id) ((id)[0] & (1 << 7)) +#define ata_id_queue_depth(id) (((id)[ATA_ID_QUEUE_DEPTH] & 0x1f) + 1) +#define ata_id_removeable(id) ((id)[ATA_ID_CONFIG] & (1 << 7)) #define ata_id_has_atapi_AN(id) \ ( (((id)[76] != 0x0000) && ((id)[76] != 0xffff)) && \ ((id)[78] & (1 << 5)) ) -#define ata_id_iordy_disable(id) ((id)[49] & (1 << 10)) -#define ata_id_has_iordy(id) ((id)[49] & (1 << 11)) +#define ata_id_iordy_disable(id) ((id)[ATA_ID_CAPABILITY] & (1 << 10)) +#define ata_id_has_iordy(id) ((id)[ATA_ID_CAPABILITY] & (1 << 11)) #define ata_id_u32(id,n) \ (((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)])) #define ata_id_u64(id,n) \ @@ -457,7 +487,7 @@ static inline int ata_is_data(u8 prot) ((u64) (id)[(n) + 1] << 16) | \ ((u64) (id)[(n) + 0]) ) -#define ata_id_cdb_intr(id) (((id)[0] & 0x60) == 0x20) +#define ata_id_cdb_intr(id) (((id)[ATA_ID_CONFIG] & 0x60) == 0x20) static inline bool ata_id_has_hipm(const u16 *id) { @@ -482,75 +512,75 @@ static inline bool ata_id_has_dipm(const u16 *id) static inline int ata_id_has_fua(const u16 *id) { - if ((id[84] & 0xC000) != 0x4000) + if ((id[ATA_ID_CFSSE] & 0xC000) != 0x4000) return 0; - return id[84] & (1 << 6); + return id[ATA_ID_CFSSE] & (1 << 6); } static inline int ata_id_has_flush(const u16 *id) { - if ((id[83] & 0xC000) != 0x4000) + if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) return 0; - return id[83] & (1 << 12); + return id[ATA_ID_COMMAND_SET_2] & (1 << 12); } static inline int ata_id_has_flush_ext(const u16 *id) { - if ((id[83] & 0xC000) != 0x4000) + if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) return 0; - return id[83] & (1 << 13); + return id[ATA_ID_COMMAND_SET_2] & (1 << 13); } static inline int ata_id_has_lba48(const u16 *id) { - if ((id[83] & 0xC000) != 0x4000) + if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) return 0; - if (!ata_id_u64(id, 100)) + if (!ata_id_u64(id, ATA_ID_LBA_CAPACITY_2)) return 0; - return id[83] & (1 << 10); + return id[ATA_ID_COMMAND_SET_2] & (1 << 10); } static inline int ata_id_hpa_enabled(const u16 *id) { /* Yes children, word 83 valid bits cover word 82 data */ - if ((id[83] & 0xC000) != 0x4000) + if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) return 0; /* And 87 covers 85-87 */ - if ((id[87] & 0xC000) != 0x4000) + if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) return 0; /* Check command sets enabled as well as supported */ - if ((id[85] & ( 1 << 10)) == 0) + if ((id[ATA_ID_CFS_ENABLE_1] & (1 << 10)) == 0) return 0; - return id[82] & (1 << 10); + return id[ATA_ID_COMMAND_SET_1] & (1 << 10); } static inline int ata_id_has_wcache(const u16 *id) { /* Yes children, word 83 valid bits cover word 82 data */ - if ((id[83] & 0xC000) != 0x4000) + if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) return 0; - return id[82] & (1 << 5); + return id[ATA_ID_COMMAND_SET_1] & (1 << 5); } static inline int ata_id_has_pm(const u16 *id) { - if ((id[83] & 0xC000) != 0x4000) + if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000) return 0; - return id[82] & (1 << 3); + return id[ATA_ID_COMMAND_SET_1] & (1 << 3); } static inline int ata_id_rahead_enabled(const u16 *id) { - if ((id[87] & 0xC000) != 0x4000) + if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) return 0; - return id[85] & (1 << 6); + return id[ATA_ID_CFS_ENABLE_1] & (1 << 6); } static inline int ata_id_wcache_enabled(const u16 *id) { - if ((id[87] & 0xC000) != 0x4000) + if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000) return 0; - return id[85] & (1 << 5); + return id[ATA_ID_CFS_ENABLE_1] & (1 << 5); } /** @@ -581,7 +611,7 @@ static inline unsigned int ata_id_major_version(const u16 *id) static inline int ata_id_is_sata(const u16 *id) { - return ata_id_major_version(id) >= 5 && id[93] == 0; + return ata_id_major_version(id) >= 5 && id[ATA_ID_HW_CONFIG] == 0; } static inline int ata_id_has_tpm(const u16 *id) @@ -599,7 +629,7 @@ static inline int ata_id_has_dword_io(const u16 *id) /* ATA 8 reuses this flag for "trusted" computing */ if (ata_id_major_version(id) > 7) return 0; - if (id[48] & (1 << 0)) + if (id[ATA_ID_DWORD_IO] & (1 << 0)) return 1; return 0; } @@ -608,22 +638,22 @@ static inline int ata_id_current_chs_valid(const 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 */ + id[ATA_ID_CUR_CYLS] to id[ATA_ID_CUR_SECTORS] are vendor specific. */ + return (id[ATA_ID_FIELD_VALID] & 1) && /* Current translation valid */ + id[ATA_ID_CUR_CYLS] && /* cylinders in current translation */ + id[ATA_ID_CUR_HEADS] && /* heads in current translation */ + id[ATA_ID_CUR_HEADS] <= 16 && + id[ATA_ID_CUR_SECTORS]; /* sectors in current translation */ } static inline int ata_id_is_cfa(const u16 *id) { - u16 v = id[0]; - if (v == 0x848A) /* Standard CF */ + if (id[ATA_ID_CONFIG] == 0x848A) /* Standard CF */ return 1; /* Could be CF hiding as standard ATA */ - if (ata_id_major_version(id) >= 3 && id[82] != 0xFFFF && - (id[82] & ( 1 << 2))) + if (ata_id_major_version(id) >= 3 && + id[ATA_ID_COMMAND_SET_1] != 0xFFFF && + (id[ATA_ID_COMMAND_SET_1] & (1 << 2))) return 1; return 0; } @@ -632,21 +662,21 @@ static inline int ata_drive_40wire(const u16 *dev_id) { if (ata_id_is_sata(dev_id)) return 0; /* SATA */ - if ((dev_id[93] & 0xE000) == 0x6000) + if ((dev_id[ATA_ID_HW_CONFIG] & 0xE000) == 0x6000) return 0; /* 80 wire */ return 1; } static inline int ata_drive_40wire_relaxed(const u16 *dev_id) { - if ((dev_id[93] & 0x2000) == 0x2000) + if ((dev_id[ATA_ID_HW_CONFIG] & 0x2000) == 0x2000) return 0; /* 80 wire */ return 1; } static inline int atapi_cdb_len(const u16 *dev_id) { - u16 tmp = dev_id[0] & 0x3; + u16 tmp = dev_id[ATA_ID_CONFIG] & 0x3; switch (tmp) { case 0: return 12; case 1: return 16; @@ -656,7 +686,7 @@ static inline int atapi_cdb_len(const u16 *dev_id) static inline int atapi_command_packet_set(const u16 *dev_id) { - return (dev_id[0] >> 8) & 0x1f; + return (dev_id[ATA_ID_CONFIG] >> 8) & 0x1f; } static inline int atapi_id_dmadir(const u16 *dev_id) |