-enum {
- ATA_MAX_DEVICES = 1, /* per bus/port */
- ATA_MAX_PRD = 256, /* we could make these 256/256 */
- ATA_SECT_SIZE = 256, /*256 words per sector */
-
- /* bits in ATA command block registers */
- ATA_HOB = (1 << 7), /* LBA48 selector */
- ATA_NIEN = (1 << 1), /* disable-irq flag */
- /*ATA_LBA = (1 << 6), */ /* LBA28 selector */
- ATA_DEV1 = (1 << 4), /* Select Device 1 (slave) */
- ATA_DEVICE_OBS = (1 << 7) | (1 << 5), /* obs bits in dev reg */
- ATA_DEVCTL_OBS = (1 << 3), /* obsolete bit in devctl reg */
- ATA_BUSY = (1 << 7), /* BSY status bit */
- ATA_DRDY = (1 << 6), /* device ready */
- ATA_DF = (1 << 5), /* device fault */
- ATA_DRQ = (1 << 3), /* data request i/o */
- ATA_ERR = (1 << 0), /* have an error */
- ATA_SRST = (1 << 2), /* software reset */
- ATA_ABORTED = (1 << 2), /* command aborted */
- /* ATA command block registers */
- ATA_REG_DATA = 0x00,
- ATA_REG_ERR = 0x01,
- ATA_REG_NSECT = 0x02,
- ATA_REG_LBAL = 0x03,
- ATA_REG_LBAM = 0x04,
- ATA_REG_LBAH = 0x05,
- ATA_REG_DEVICE = 0x06,
- ATA_REG_STATUS = 0x07,
- ATA_PCI_CTL_OFS = 0x02,
- /* and their aliases */
- ATA_REG_FEATURE = ATA_REG_ERR,
- ATA_REG_CMD = ATA_REG_STATUS,
- ATA_REG_BYTEL = ATA_REG_LBAM,
- ATA_REG_BYTEH = ATA_REG_LBAH,
- ATA_REG_DEVSEL = ATA_REG_DEVICE,
- ATA_REG_IRQ = ATA_REG_NSECT,
-
- /* SETFEATURES stuff */
- SETFEATURES_XFER = 0x03,
- XFER_UDMA_7 = 0x47,
- XFER_UDMA_6 = 0x46,
- XFER_UDMA_5 = 0x45,
- XFER_UDMA_4 = 0x44,
- XFER_UDMA_3 = 0x43,
- XFER_UDMA_2 = 0x42,
- XFER_UDMA_1 = 0x41,
- XFER_UDMA_0 = 0x40,
- XFER_MW_DMA_2 = 0x22,
- XFER_MW_DMA_1 = 0x21,
- XFER_MW_DMA_0 = 0x20,
- XFER_PIO_4 = 0x0C,
- XFER_PIO_3 = 0x0B,
- XFER_PIO_2 = 0x0A,
- XFER_PIO_1 = 0x09,
- XFER_PIO_0 = 0x08,
- XFER_SW_DMA_2 = 0x12,
- XFER_SW_DMA_1 = 0x11,
- XFER_SW_DMA_0 = 0x10,
- XFER_PIO_SLOW = 0x00
-};
-/*
- * ATA Commands (only mandatory commands listed here)
- */
-#define ATA_CMD_READ 0x20 /* Read Sectors (with retries) */
-#define ATA_CMD_READN 0x21 /* Read Sectors ( no retries) */
-#define ATA_CMD_WRITE 0x30 /* Write Sectores (with retries)*/
-#define ATA_CMD_WRITEN 0x31 /* Write Sectors ( no retries)*/
-#define ATA_CMD_VRFY 0x40 /* Read Verify (with retries) */
-#define ATA_CMD_VRFYN 0x41 /* Read verify ( no retries) */
-#define ATA_CMD_SEEK 0x70 /* Seek */
-#define ATA_CMD_DIAG 0x90 /* Execute Device Diagnostic */
-#define ATA_CMD_INIT 0x91 /* Initialize Device Parameters */
-#define ATA_CMD_RD_MULT 0xC4 /* Read Multiple */
-#define ATA_CMD_WR_MULT 0xC5 /* Write Multiple */
-#define ATA_CMD_SETMULT 0xC6 /* Set Multiple Mode */
-#define ATA_CMD_RD_DMA 0xC8 /* Read DMA (with retries) */
-#define ATA_CMD_RD_DMAN 0xC9 /* Read DMS ( no retries) */
-#define ATA_CMD_WR_DMA 0xCA /* Write DMA (with retries) */
-#define ATA_CMD_WR_DMAN 0xCB /* Write DMA ( no retires) */
-#define ATA_CMD_IDENT 0xEC /* Identify Device */
-#define ATA_CMD_SETF 0xEF /* Set Features */
-#define ATA_CMD_CHK_PWR 0xE5 /* Check Power Mode */
-
-#define ATA_CMD_READ_EXT 0x24 /* Read Sectors (with retries) with 48bit addressing */
-#define ATA_CMD_WRITE_EXT 0x34 /* Write Sectores (with retries) with 48bit addressing */
-#define ATA_CMD_VRFY_EXT 0x42 /* Read Verify (with retries) with 48bit addressing */
-