summaryrefslogtreecommitdiff
path: root/include/libata.h
blob: a5d1c4fac8b8da70963d013b527d8318f066c000 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
/*
 * 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__ */