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/*
* Copyright (C) 2008 Freescale Semiconductor, Inc.
* Dave Liu <daveliu@freescale.com>
* port from libata of linux kernel
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
*/
#ifndef __LIBATA_H__
#define __LIBATA_H__
#include <common.h>
/* command
*/
enum ata_cmd {
/* non-NCQ command */
ATA_CMD_DEV_RESET = 0x08, /* ATAPI device reset */
ATA_CMD_FLUSH_CACHE = 0xE7,
ATA_CMD_FLUSH_CACHE_EXT = 0xEA,
ATA_CMD_ID_ATA = 0xEC,
ATA_CMD_ID_ATAPI = 0xA1,
ATA_CMD_READ_DMA = 0xC8,
ATA_CMD_READ_DMA_EXT = 0x25,
ATA_CMD_WRITE_DMA = 0xCA,
ATA_CMD_WRITE_DMA_EXT = 0x35,
ATA_CMD_PIO_READ = 0x20,
ATA_CMD_PIO_READ_EXT = 0x24,
ATA_CMD_PIO_WRITE = 0x30,
ATA_CMD_PIO_WRITE_EXT = 0x34,
ATA_CMD_SET_FEATURES = 0xEF,
/* NCQ command */
ATA_CMD_READ_FPDMA_QUEUED = 0x60,
ATA_CMD_WRITE_FPDMA_QUEUED = 0x61,
};
/* SETFEATURES stuff
*/
enum ata_set_features {
/* 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_4 = 0x24, /* CFA only */
XFER_MW_DMA_3 = 0x23, /* CFA only */
XFER_MW_DMA_2 = 0x22,
XFER_MW_DMA_1 = 0x21,
XFER_MW_DMA_0 = 0x20,
XFER_PIO_6 = 0x0E, /* CFA only */
XFER_PIO_5 = 0x0D, /* CFA only */
XFER_PIO_4 = 0x0C,
XFER_PIO_3 = 0x0B,
XFER_PIO_2 = 0x0A,
XFER_PIO_1 = 0x09,
XFER_PIO_0 = 0x08,
XFER_PIO_SLOW = 0x00,
SETFEATURES_WC_ON = 0x02, /* Enable write cache */
SETFEATURES_WC_OFF = 0x82, /* Disable write cache */
SETFEATURES_SPINUP = 0x07, /* Spin-up drive */
};
enum ata_protocol {
ATA_PROT_UNKNOWN, /* unknown */
ATA_PROT_NODATA, /* no data */
ATA_PROT_PIO, /* PIO data xfer */
ATA_PROT_DMA, /* DMA */
ATA_PROT_NCQ, /* NCQ */
ATA_PROT_ATAPI, /* packet command, PIO data xfer */
ATA_PROT_ATAPI_NODATA, /* packet command, no data */
ATA_PROT_ATAPI_DMA, /* packet command, DMA */
};
enum ata_dev_typed {
ATA_DEV_ATA, /* ATA device */
ATA_DEV_ATAPI, /* ATAPI device */
ATA_DEV_PMP, /* Port Multiplier Port */
ATA_DEV_UNKNOWN, /* unknown */
};
enum {
ATA_SECT_SIZE = 512,
ATA_MAX_SECTORS_128 = 128,
ATA_MAX_SECTORS = 256,
ATA_MAX_SECTORS_LBA48 = 65535,
/* 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_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_ICRC = (1 << 7), /* interface CRC error */
ATA_UNC = (1 << 6), /* uncorrectable media error */
ATA_IDNF = (1 << 4), /* ID not found */
ATA_ABORTED = (1 << 2), /* command aborted */
ATA_ID_WORDS = 256,
ATA_ID_SERNO = 10,
ATA_ID_FW_REV = 23,
ATA_ID_PROD = 27,
ATA_ID_FIELD_VALID = 53,
ATA_ID_LBA_SECTORS = 60,
ATA_ID_MWDMA_MODES = 63,
ATA_ID_PIO_MODES = 64,
ATA_ID_QUEUE_DEPTH = 75,
ATA_ID_SATA_CAP = 76,
ATA_ID_SATA_FEATURES = 78,
ATA_ID_SATA_FEATURES_EN = 79,
ATA_ID_MAJOR_VER = 80,
ATA_ID_MINOR_VER = 81,
ATA_ID_UDMA_MODES = 88,
ATA_ID_LBA48_SECTORS = 100,
ATA_ID_SERNO_LEN = 20,
ATA_ID_FW_REV_LEN = 8,
ATA_ID_PROD_LEN = 40,
ATA_PIO3 = (1 << 0),
ATA_PIO4 = ATA_PIO3 | (1 << 1),
ATA_UDMA0 = (1 << 0),
ATA_UDMA1 = ATA_UDMA0 | (1 << 1),
ATA_UDMA2 = ATA_UDMA1 | (1 << 2),
ATA_UDMA3 = ATA_UDMA2 | (1 << 3),
ATA_UDMA4 = ATA_UDMA3 | (1 << 4),
ATA_UDMA5 = ATA_UDMA4 | (1 << 5),
ATA_UDMA6 = ATA_UDMA5 | (1 << 6),
ATA_UDMA7 = ATA_UDMA6 | (1 << 7),
};
#define ata_id_is_ata(id) (((id)[0] & (1 << 15)) == 0)
#define ata_id_wcache_enabled(id) ((id)[85] & (1 << 5))
#define ata_id_has_fua(id) ((id)[84] & (1 << 6))
#define ata_id_has_flush(id) ((id)[83] & (1 << 12))
#define ata_id_has_flush_ext(id) ((id)[83] & (1 << 13))
#define ata_id_has_lba48(id) ((id)[83] & (1 << 10))
#define ata_id_has_wcache(id) ((id)[82] & (1 << 5))
#define ata_id_has_lba(id) ((id)[49] & (1 << 9))
#define ata_id_has_dma(id) ((id)[49] & (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_u32(id,n) \
(((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)]))
#define ata_id_u64(id,n) \
( ((u64) (id)[(n) + 3] << 48) | \
((u64) (id)[(n) + 2] << 32) | \
((u64) (id)[(n) + 1] << 16) | \
((u64) (id)[(n) + 0]) )
static inline unsigned int ata_id_major_version(const u16 *id)
{
unsigned int mver;
if (id[ATA_ID_MAJOR_VER] == 0xFFFF)
return 0;
for (mver = 14; mver >= 1; mver--)
if (id[ATA_ID_MAJOR_VER] & (1 << mver))
break;
return mver;
}
static inline int ata_id_is_sata(const u16 *id)
{
return ata_id_major_version(id) >= 5 && id[93] == 0;
}
u64 ata_id_n_sectors(u16 *id);
u32 ata_dev_classify(u32 sig);
void ata_id_c_string(const u16 *id, unsigned char *s,
unsigned int ofs, unsigned int len);
void ata_dump_id(u16 *id);
void ata_swap_buf_le16(u16 *buf, unsigned int buf_words);
#endif /* __LIBATA_H__ */
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