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Dave Liuffc664e2008-03-26 22:51:44 +08001/*
2 * Copyright (C) 2008 Freescale Semiconductor, Inc.
3 * Dave Liu <daveliu@freescale.com>
4 * port from libata of linux kernel
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation; either version 2 of
9 * the License, or (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
19 * MA 02111-1307 USA
20 *
21 */
22
23#ifndef __LIBATA_H__
24#define __LIBATA_H__
25
26#include <common.h>
27
28/* command
29 */
30enum ata_cmd {
31 /* non-NCQ command */
32 ATA_CMD_DEV_RESET = 0x08, /* ATAPI device reset */
33 ATA_CMD_FLUSH_CACHE = 0xE7,
34 ATA_CMD_FLUSH_CACHE_EXT = 0xEA,
35 ATA_CMD_ID_ATA = 0xEC,
36 ATA_CMD_ID_ATAPI = 0xA1,
37 ATA_CMD_READ_DMA = 0xC8,
38 ATA_CMD_READ_DMA_EXT = 0x25,
39 ATA_CMD_WRITE_DMA = 0xCA,
40 ATA_CMD_WRITE_DMA_EXT = 0x35,
41 ATA_CMD_PIO_READ = 0x20,
42 ATA_CMD_PIO_READ_EXT = 0x24,
43 ATA_CMD_PIO_WRITE = 0x30,
44 ATA_CMD_PIO_WRITE_EXT = 0x34,
45 ATA_CMD_SET_FEATURES = 0xEF,
46
47 /* NCQ command */
48 ATA_CMD_READ_FPDMA_QUEUED = 0x60,
49 ATA_CMD_WRITE_FPDMA_QUEUED = 0x61,
50};
51
52/* SETFEATURES stuff
53 */
54enum ata_set_features {
55 /* SETFEATURES stuff */
56 SETFEATURES_XFER = 0x03,
57 XFER_UDMA_7 = 0x47,
58 XFER_UDMA_6 = 0x46,
59 XFER_UDMA_5 = 0x45,
60 XFER_UDMA_4 = 0x44,
61 XFER_UDMA_3 = 0x43,
62 XFER_UDMA_2 = 0x42,
63 XFER_UDMA_1 = 0x41,
64 XFER_UDMA_0 = 0x40,
65 XFER_MW_DMA_4 = 0x24, /* CFA only */
66 XFER_MW_DMA_3 = 0x23, /* CFA only */
67 XFER_MW_DMA_2 = 0x22,
68 XFER_MW_DMA_1 = 0x21,
69 XFER_MW_DMA_0 = 0x20,
70 XFER_PIO_6 = 0x0E, /* CFA only */
71 XFER_PIO_5 = 0x0D, /* CFA only */
72 XFER_PIO_4 = 0x0C,
73 XFER_PIO_3 = 0x0B,
74 XFER_PIO_2 = 0x0A,
75 XFER_PIO_1 = 0x09,
76 XFER_PIO_0 = 0x08,
77 XFER_PIO_SLOW = 0x00,
78
79 SETFEATURES_WC_ON = 0x02, /* Enable write cache */
80 SETFEATURES_WC_OFF = 0x82, /* Disable write cache */
81
82 SETFEATURES_SPINUP = 0x07, /* Spin-up drive */
83};
84
85enum ata_protocol {
86 ATA_PROT_UNKNOWN, /* unknown */
87 ATA_PROT_NODATA, /* no data */
88 ATA_PROT_PIO, /* PIO data xfer */
89 ATA_PROT_DMA, /* DMA */
90 ATA_PROT_NCQ, /* NCQ */
91 ATA_PROT_ATAPI, /* packet command, PIO data xfer */
92 ATA_PROT_ATAPI_NODATA, /* packet command, no data */
93 ATA_PROT_ATAPI_DMA, /* packet command, DMA */
94};
95
96enum ata_dev_typed {
97 ATA_DEV_ATA, /* ATA device */
98 ATA_DEV_ATAPI, /* ATAPI device */
99 ATA_DEV_PMP, /* Port Multiplier Port */
100 ATA_DEV_UNKNOWN, /* unknown */
101};
102
103enum {
104 ATA_SECT_SIZE = 512,
105 ATA_MAX_SECTORS_128 = 128,
106 ATA_MAX_SECTORS = 256,
107 ATA_MAX_SECTORS_LBA48 = 65535,
108
109 /* bits in ATA command block registers */
110 ATA_HOB = (1 << 7), /* LBA48 selector */
111 ATA_NIEN = (1 << 1), /* disable-irq flag */
112 ATA_LBA = (1 << 6), /* LBA28 selector */
113 ATA_DEV1 = (1 << 4), /* Select Device 1 (slave) */
114 ATA_BUSY = (1 << 7), /* BSY status bit */
115 ATA_DRDY = (1 << 6), /* device ready */
116 ATA_DF = (1 << 5), /* device fault */
117 ATA_DRQ = (1 << 3), /* data request i/o */
118 ATA_ERR = (1 << 0), /* have an error */
119 ATA_SRST = (1 << 2), /* software reset */
120 ATA_ICRC = (1 << 7), /* interface CRC error */
121 ATA_UNC = (1 << 6), /* uncorrectable media error */
122 ATA_IDNF = (1 << 4), /* ID not found */
123 ATA_ABORTED = (1 << 2), /* command aborted */
124
125 ATA_ID_WORDS = 256,
126 ATA_ID_SERNO = 10,
127 ATA_ID_FW_REV = 23,
128 ATA_ID_PROD = 27,
129 ATA_ID_FIELD_VALID = 53,
130 ATA_ID_LBA_SECTORS = 60,
131 ATA_ID_MWDMA_MODES = 63,
132 ATA_ID_PIO_MODES = 64,
133 ATA_ID_QUEUE_DEPTH = 75,
134 ATA_ID_SATA_CAP = 76,
135 ATA_ID_SATA_FEATURES = 78,
136 ATA_ID_SATA_FEATURES_EN = 79,
137 ATA_ID_MAJOR_VER = 80,
138 ATA_ID_MINOR_VER = 81,
139 ATA_ID_UDMA_MODES = 88,
140 ATA_ID_LBA48_SECTORS = 100,
141
142 ATA_ID_SERNO_LEN = 20,
143 ATA_ID_FW_REV_LEN = 8,
144 ATA_ID_PROD_LEN = 40,
145
146 ATA_PIO3 = (1 << 0),
147 ATA_PIO4 = ATA_PIO3 | (1 << 1),
148
149 ATA_UDMA0 = (1 << 0),
150 ATA_UDMA1 = ATA_UDMA0 | (1 << 1),
151 ATA_UDMA2 = ATA_UDMA1 | (1 << 2),
152 ATA_UDMA3 = ATA_UDMA2 | (1 << 3),
153 ATA_UDMA4 = ATA_UDMA3 | (1 << 4),
154 ATA_UDMA5 = ATA_UDMA4 | (1 << 5),
155 ATA_UDMA6 = ATA_UDMA5 | (1 << 6),
156 ATA_UDMA7 = ATA_UDMA6 | (1 << 7),
157};
158
159#define ata_id_is_ata(id) (((id)[0] & (1 << 15)) == 0)
160#define ata_id_wcache_enabled(id) ((id)[85] & (1 << 5))
161#define ata_id_has_fua(id) ((id)[84] & (1 << 6))
162#define ata_id_has_flush(id) ((id)[83] & (1 << 12))
163#define ata_id_has_flush_ext(id) ((id)[83] & (1 << 13))
164#define ata_id_has_lba48(id) ((id)[83] & (1 << 10))
165#define ata_id_has_wcache(id) ((id)[82] & (1 << 5))
166#define ata_id_has_lba(id) ((id)[49] & (1 << 9))
167#define ata_id_has_dma(id) ((id)[49] & (1 << 8))
168#define ata_id_has_ncq(id) ((id)[76] & (1 << 8))
169#define ata_id_queue_depth(id) (((id)[75] & 0x1f) + 1)
170
Wolfgang Denkd049cc72008-03-27 00:03:57 +0100171#define ata_id_u32(id,n) \
172 (((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)]))
173#define ata_id_u64(id,n) \
174 ( ((u64) (id)[(n) + 3] << 48) | \
175 ((u64) (id)[(n) + 2] << 32) | \
176 ((u64) (id)[(n) + 1] << 16) | \
177 ((u64) (id)[(n) + 0]) )
Dave Liuffc664e2008-03-26 22:51:44 +0800178
179
180static inline unsigned int ata_id_major_version(const u16 *id)
181{
182 unsigned int mver;
183
184 if (id[ATA_ID_MAJOR_VER] == 0xFFFF)
185 return 0;
186
187 for (mver = 14; mver >= 1; mver--)
188 if (id[ATA_ID_MAJOR_VER] & (1 << mver))
189 break;
190 return mver;
191}
192
193static inline int ata_id_is_sata(const u16 *id)
194{
195 return ata_id_major_version(id) >= 5 && id[93] == 0;
196}
197
198u64 ata_id_n_sectors(u16 *id);
199u32 ata_dev_classify(u32 sig);
200void ata_id_c_string(const u16 *id, unsigned char *s,
201 unsigned int ofs, unsigned int len);
202void ata_dump_id(u16 *id);
203void ata_swap_buf_le16(u16 *buf, unsigned int buf_words);
204
205#endif /* __LIBATA_H__ */