diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/ata.h | 71 |
1 files changed, 64 insertions, 7 deletions
diff --git a/include/linux/ata.h b/include/linux/ata.h index 3fbe6d7..43fecf6 100644 --- a/include/linux/ata.h +++ b/include/linux/ata.h @@ -324,6 +324,13 @@ enum { ATA_TFLAG_LBA = (1 << 4), /* enable LBA */ ATA_TFLAG_FUA = (1 << 5), /* enable FUA */ ATA_TFLAG_POLLING = (1 << 6), /* set nIEN to 1 and use polling */ + + /* protocol flags */ + ATA_PROT_FLAG_PIO = (1 << 0), /* is PIO */ + ATA_PROT_FLAG_DMA = (1 << 1), /* is DMA */ + ATA_PROT_FLAG_DATA = ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA, + ATA_PROT_FLAG_NCQ = (1 << 2), /* is NCQ */ + ATA_PROT_FLAG_ATAPI = (1 << 3), /* is ATAPI */ }; enum ata_tf_protocols { @@ -373,6 +380,63 @@ struct ata_taskfile { u8 command; /* IO operation */ }; +/* + * protocol tests + */ +static inline unsigned int ata_prot_flags(u8 prot) +{ + switch (prot) { + case ATA_PROT_NODATA: + return 0; + case ATA_PROT_PIO: + return ATA_PROT_FLAG_PIO; + case ATA_PROT_DMA: + return ATA_PROT_FLAG_DMA; + case ATA_PROT_NCQ: + return ATA_PROT_FLAG_DMA | ATA_PROT_FLAG_NCQ; + case ATA_PROT_ATAPI_NODATA: + return ATA_PROT_FLAG_ATAPI; + case ATA_PROT_ATAPI: + return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_PIO; + case ATA_PROT_ATAPI_DMA: + return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_DMA; + } + return 0; +} + +static inline int ata_is_atapi(u8 prot) +{ + return ata_prot_flags(prot) & ATA_PROT_FLAG_ATAPI; +} + +static inline int ata_is_nodata(u8 prot) +{ + return !(ata_prot_flags(prot) & ATA_PROT_FLAG_DATA); +} + +static inline int ata_is_pio(u8 prot) +{ + return ata_prot_flags(prot) & ATA_PROT_FLAG_PIO; +} + +static inline int ata_is_dma(u8 prot) +{ + return ata_prot_flags(prot) & ATA_PROT_FLAG_DMA; +} + +static inline int ata_is_ncq(u8 prot) +{ + return ata_prot_flags(prot) & ATA_PROT_FLAG_NCQ; +} + +static inline int ata_is_data(u8 prot) +{ + return ata_prot_flags(prot) & ATA_PROT_FLAG_DATA; +} + +/* + * 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)) @@ -594,13 +658,6 @@ static inline int atapi_command_packet_set(const u16 *dev_id) return (dev_id[0] >> 8) & 0x1f; } -static inline int is_atapi_taskfile(const struct ata_taskfile *tf) -{ - return (tf->protocol == ATA_PROT_ATAPI) || - (tf->protocol == ATA_PROT_ATAPI_NODATA) || - (tf->protocol == ATA_PROT_ATAPI_DMA); -} - static inline int is_multi_taskfile(struct ata_taskfile *tf) { return (tf->command == ATA_CMD_READ_MULTI) || |
