diff options
Diffstat (limited to 'include/ata_drive.h')
| -rw-r--r-- | include/ata_drive.h | 43 |
1 files changed, 42 insertions, 1 deletions
diff --git a/include/ata_drive.h b/include/ata_drive.h index cdd8049f0d..1996321012 100644 --- a/include/ata_drive.h +++ b/include/ata_drive.h @@ -16,6 +16,8 @@ #ifndef ATA_DISK_H # define ATA_DISK +#include <block.h> + /* IDE register file */ #define IDE_REG_DATA 0x00 #define IDE_REG_ERR 0x01 @@ -33,6 +35,26 @@ #define IDE_REG_DEV_CTL 0x00 #define IDE_REG_DRV_ADDR 0x01 +#define ATA_CMD_ID_ATA 0xEC +#define ATA_CMD_READ 0x20 +#define ATA_CMD_READ_EXT 0x25 +#define ATA_CMD_WRITE 0x30 +#define ATA_CMD_WRITE_EXT 0x35 + +/* drive's status flags */ +#define ATA_STATUS_BUSY (1 << 7) +#define ATA_STATUS_READY (1 << 6) +#define ATA_STATUS_WR_FLT (1 << 5) +#define ATA_STATUS_DSC (1 << 4) +#define ATA_STATUS_DRQ (1 << 3) +#define ATA_STATUS_CORR (1 << 2) +#define ATA_STATUS_IDX (1 << 1) +#define ATA_STATUS_ERROR (1 << 0) +/* command flags */ +#define LBA_FLAG (1 << 6) +#define ATA_DEVCTL_SOFT_RESET (1 << 2) +#define ATA_DEVCTL_INTR_DISABLE (1 << 1) + /** addresses of each individual IDE drive register */ struct ata_ioports { void __iomem *cmd_addr; @@ -55,8 +77,27 @@ struct ata_ioports { int dataif_be; /* true if 16 bit data register is big endian */ }; +struct ata_port; + +struct ata_port_operations { + int (*read)(struct ata_port *port, void *buf, unsigned int block, int num_blocks); + int (*write)(struct ata_port *port, const void *buf, unsigned int block, int num_blocks); + int (*read_id)(struct ata_port *port, void *buf); + int (*reset)(struct ata_port *port); +}; + +struct ata_port { + struct ata_port_operations *ops; + struct device_d *dev; + void *drvdata; + struct block_device blk; + uint16_t *id; +}; + +int ide_port_register(struct device_d *, struct ata_ioports *); +int ata_port_register(struct ata_port *port); + struct device_d; -extern int register_ata_drive(struct device_d*, struct ata_ioports*); /** * @file |