blob: 23a22df039d8c64664b9f85582e16594a600b16a [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001
2/*
Jeff Garzikaf36d7f2005-08-28 20:18:39 -04003 * Copyright 2003-2004 Red Hat, Inc. All rights reserved.
4 * Copyright 2003-2004 Jeff Garzik
5 *
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2, or (at your option)
10 * any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; see the file COPYING. If not, write to
19 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
20 *
21 *
22 * libata documentation is available via 'make {ps|pdf}docs',
23 * as Documentation/DocBook/libata.*
24 *
25 * Hardware documentation available from http://www.t13.org/
26 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070027 */
28
29#ifndef __LINUX_ATA_H__
30#define __LINUX_ATA_H__
31
32#include <linux/types.h>
33
34/* defines only for the constants which don't work well as enums */
35#define ATA_DMA_BOUNDARY 0xffffUL
36#define ATA_DMA_MASK 0xffffffffULL
37
38enum {
39 /* various global constants */
40 ATA_MAX_DEVICES = 2, /* per bus/port */
41 ATA_MAX_PRD = 256, /* we could make these 256/256 */
42 ATA_SECT_SIZE = 512,
Albert Lee18d6e9d2007-04-02 11:34:15 +080043 ATA_MAX_SECTORS_128 = 128,
Jeff Garzik8b881b02006-06-11 09:59:27 -040044 ATA_MAX_SECTORS = 256,
45 ATA_MAX_SECTORS_LBA48 = 65535,/* TODO: 65536? */
Linus Torvalds1da177e2005-04-16 15:20:36 -070046
47 ATA_ID_WORDS = 256,
Tejun Heoa0cf7332007-01-02 20:18:49 +090048 ATA_ID_SERNO = 10,
49 ATA_ID_FW_REV = 23,
50 ATA_ID_PROD = 27,
Alan Cox11e29e22005-10-21 18:46:32 -040051 ATA_ID_OLD_PIO_MODES = 51,
52 ATA_ID_FIELD_VALID = 53,
Linus Torvalds1da177e2005-04-16 15:20:36 -070053 ATA_ID_MWDMA_MODES = 63,
Alan Cox11e29e22005-10-21 18:46:32 -040054 ATA_ID_PIO_MODES = 64,
55 ATA_ID_EIDE_DMA_MIN = 65,
56 ATA_ID_EIDE_PIO = 67,
57 ATA_ID_EIDE_PIO_IORDY = 68,
Linus Torvalds1da177e2005-04-16 15:20:36 -070058 ATA_ID_UDMA_MODES = 88,
Alan Cox11e29e22005-10-21 18:46:32 -040059 ATA_ID_MAJOR_VER = 80,
Linus Torvalds1da177e2005-04-16 15:20:36 -070060 ATA_ID_PIO4 = (1 << 1),
61
Tejun Heoa0cf7332007-01-02 20:18:49 +090062 ATA_ID_SERNO_LEN = 20,
63 ATA_ID_FW_REV_LEN = 8,
64 ATA_ID_PROD_LEN = 40,
65
Linus Torvalds1da177e2005-04-16 15:20:36 -070066 ATA_PCI_CTL_OFS = 2,
Bartlomiej Zolnierkiewicz4099d142007-07-20 01:11:59 +020067
68 ATA_PIO0 = (1 << 0),
69 ATA_PIO1 = ATA_PIO0 | (1 << 1),
70 ATA_PIO2 = ATA_PIO1 | (1 << 2),
71 ATA_PIO3 = ATA_PIO2 | (1 << 3),
72 ATA_PIO4 = ATA_PIO3 | (1 << 4),
73 ATA_PIO5 = ATA_PIO4 | (1 << 5),
74 ATA_PIO6 = ATA_PIO5 | (1 << 6),
75
Linus Torvalds1da177e2005-04-16 15:20:36 -070076 ATA_UDMA0 = (1 << 0),
77 ATA_UDMA1 = ATA_UDMA0 | (1 << 1),
78 ATA_UDMA2 = ATA_UDMA1 | (1 << 2),
79 ATA_UDMA3 = ATA_UDMA2 | (1 << 3),
80 ATA_UDMA4 = ATA_UDMA3 | (1 << 4),
81 ATA_UDMA5 = ATA_UDMA4 | (1 << 5),
82 ATA_UDMA6 = ATA_UDMA5 | (1 << 6),
83 ATA_UDMA7 = ATA_UDMA6 | (1 << 7),
84 /* ATA_UDMA7 is just for completeness... doesn't exist (yet?). */
85
86 ATA_UDMA_MASK_40C = ATA_UDMA2, /* udma0-2 */
87
88 /* DMA-related */
89 ATA_PRD_SZ = 8,
90 ATA_PRD_TBL_SZ = (ATA_MAX_PRD * ATA_PRD_SZ),
91 ATA_PRD_EOT = (1 << 31), /* end-of-table flag */
92
93 ATA_DMA_TABLE_OFS = 4,
94 ATA_DMA_STATUS = 2,
95 ATA_DMA_CMD = 0,
96 ATA_DMA_WR = (1 << 3),
97 ATA_DMA_START = (1 << 0),
98 ATA_DMA_INTR = (1 << 2),
99 ATA_DMA_ERR = (1 << 1),
100 ATA_DMA_ACTIVE = (1 << 0),
101
102 /* bits in ATA command block registers */
103 ATA_HOB = (1 << 7), /* LBA48 selector */
104 ATA_NIEN = (1 << 1), /* disable-irq flag */
105 ATA_LBA = (1 << 6), /* LBA28 selector */
106 ATA_DEV1 = (1 << 4), /* Select Device 1 (slave) */
107 ATA_DEVICE_OBS = (1 << 7) | (1 << 5), /* obs bits in dev reg */
108 ATA_DEVCTL_OBS = (1 << 3), /* obsolete bit in devctl reg */
109 ATA_BUSY = (1 << 7), /* BSY status bit */
110 ATA_DRDY = (1 << 6), /* device ready */
111 ATA_DF = (1 << 5), /* device fault */
112 ATA_DRQ = (1 << 3), /* data request i/o */
113 ATA_ERR = (1 << 0), /* have an error */
114 ATA_SRST = (1 << 2), /* software reset */
Tejun Heo9be1e972006-05-15 20:58:17 +0900115 ATA_ICRC = (1 << 7), /* interface CRC error */
116 ATA_UNC = (1 << 6), /* uncorrectable media error */
117 ATA_IDNF = (1 << 4), /* ID not found */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118 ATA_ABORTED = (1 << 2), /* command aborted */
119
120 /* ATA command block registers */
121 ATA_REG_DATA = 0x00,
122 ATA_REG_ERR = 0x01,
123 ATA_REG_NSECT = 0x02,
124 ATA_REG_LBAL = 0x03,
125 ATA_REG_LBAM = 0x04,
126 ATA_REG_LBAH = 0x05,
127 ATA_REG_DEVICE = 0x06,
128 ATA_REG_STATUS = 0x07,
129
130 ATA_REG_FEATURE = ATA_REG_ERR, /* and their aliases */
131 ATA_REG_CMD = ATA_REG_STATUS,
132 ATA_REG_BYTEL = ATA_REG_LBAM,
133 ATA_REG_BYTEH = ATA_REG_LBAH,
134 ATA_REG_DEVSEL = ATA_REG_DEVICE,
135 ATA_REG_IRQ = ATA_REG_NSECT,
136
137 /* ATA device commands */
Jeff Garzikab2181c2007-05-28 08:30:36 -0400138 ATA_CMD_DEV_RESET = 0x08, /* ATAPI device reset */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700139 ATA_CMD_CHK_POWER = 0xE5, /* check power mode */
Douglas Gilbert972dcaf2005-08-11 03:35:53 -0400140 ATA_CMD_STANDBY = 0xE2, /* place in standby power mode */
141 ATA_CMD_IDLE = 0xE3, /* place in idle power mode */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700142 ATA_CMD_EDD = 0x90, /* execute device diagnostic */
143 ATA_CMD_FLUSH = 0xE7,
144 ATA_CMD_FLUSH_EXT = 0xEA,
145 ATA_CMD_ID_ATA = 0xEC,
146 ATA_CMD_ID_ATAPI = 0xA1,
147 ATA_CMD_READ = 0xC8,
148 ATA_CMD_READ_EXT = 0x25,
149 ATA_CMD_WRITE = 0xCA,
150 ATA_CMD_WRITE_EXT = 0x35,
Tejun Heo9a3dccc2006-01-06 09:56:18 +0100151 ATA_CMD_WRITE_FUA_EXT = 0x3D,
Tejun Heo88e49032006-05-15 21:03:38 +0900152 ATA_CMD_FPDMA_READ = 0x60,
153 ATA_CMD_FPDMA_WRITE = 0x61,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700154 ATA_CMD_PIO_READ = 0x20,
155 ATA_CMD_PIO_READ_EXT = 0x24,
156 ATA_CMD_PIO_WRITE = 0x30,
157 ATA_CMD_PIO_WRITE_EXT = 0x34,
Albert Lee8cbd6df2005-10-12 15:06:27 +0800158 ATA_CMD_READ_MULTI = 0xC4,
159 ATA_CMD_READ_MULTI_EXT = 0x29,
160 ATA_CMD_WRITE_MULTI = 0xC5,
161 ATA_CMD_WRITE_MULTI_EXT = 0x39,
Tejun Heo9a3dccc2006-01-06 09:56:18 +0100162 ATA_CMD_WRITE_MULTI_FUA_EXT = 0xCE,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700163 ATA_CMD_SET_FEATURES = 0xEF,
Albert Lee2c3d2a42007-06-07 16:01:17 +0800164 ATA_CMD_SET_MULTI = 0xC6,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700165 ATA_CMD_PACKET = 0xA0,
166 ATA_CMD_VERIFY = 0x40,
167 ATA_CMD_VERIFY_EXT = 0x42,
Jens Axboe9b847542006-01-06 09:28:07 +0100168 ATA_CMD_STANDBYNOW1 = 0xE0,
169 ATA_CMD_IDLEIMMEDIATE = 0xE1,
Albert Lee8bf62ec2005-05-12 15:29:42 -0400170 ATA_CMD_INIT_DEV_PARAMS = 0x91,
Alan Coxb6782722006-03-21 15:52:49 +0000171 ATA_CMD_READ_NATIVE_MAX = 0xF8,
172 ATA_CMD_READ_NATIVE_MAX_EXT = 0x27,
Alan Cox1e999732007-04-11 00:23:13 +0100173 ATA_CMD_SET_MAX = 0xF9,
174 ATA_CMD_SET_MAX_EXT = 0x37,
Tejun Heo88e49032006-05-15 21:03:38 +0900175 ATA_CMD_READ_LOG_EXT = 0x2f,
Tejun Heo814600e2007-07-01 19:05:58 +0900176 ATA_CMD_PMP_READ = 0xE4,
177 ATA_CMD_PMP_WRITE = 0xE8,
Tejun Heo88e49032006-05-15 21:03:38 +0900178
179 /* READ_LOG_EXT pages */
180 ATA_LOG_SATA_NCQ = 0x10,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700181
Mark Lord5a5dbd12007-03-16 10:22:26 -0400182 /* READ/WRITE LONG (obsolete) */
183 ATA_CMD_READ_LONG = 0x22,
184 ATA_CMD_READ_LONG_ONCE = 0x23,
185 ATA_CMD_WRITE_LONG = 0x32,
186 ATA_CMD_WRITE_LONG_ONCE = 0x33,
187
Linus Torvalds1da177e2005-04-16 15:20:36 -0700188 /* SETFEATURES stuff */
189 SETFEATURES_XFER = 0x03,
190 XFER_UDMA_7 = 0x47,
191 XFER_UDMA_6 = 0x46,
192 XFER_UDMA_5 = 0x45,
193 XFER_UDMA_4 = 0x44,
194 XFER_UDMA_3 = 0x43,
195 XFER_UDMA_2 = 0x42,
196 XFER_UDMA_1 = 0x41,
197 XFER_UDMA_0 = 0x40,
Alan Coxb352e572006-08-10 18:52:12 +0100198 XFER_MW_DMA_4 = 0x24, /* CFA only */
199 XFER_MW_DMA_3 = 0x23, /* CFA only */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700200 XFER_MW_DMA_2 = 0x22,
201 XFER_MW_DMA_1 = 0x21,
202 XFER_MW_DMA_0 = 0x20,
Alan Coxb4b52db2005-09-26 12:48:41 +0100203 XFER_SW_DMA_2 = 0x12,
204 XFER_SW_DMA_1 = 0x11,
205 XFER_SW_DMA_0 = 0x10,
Alan Coxb352e572006-08-10 18:52:12 +0100206 XFER_PIO_6 = 0x0E, /* CFA only */
207 XFER_PIO_5 = 0x0D, /* CFA only */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700208 XFER_PIO_4 = 0x0C,
209 XFER_PIO_3 = 0x0B,
210 XFER_PIO_2 = 0x0A,
211 XFER_PIO_1 = 0x09,
212 XFER_PIO_0 = 0x08,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700213 XFER_PIO_SLOW = 0x00,
214
zhao, forrest3057ac32006-06-12 12:01:34 +0800215 SETFEATURES_WC_ON = 0x02, /* Enable write cache */
216 SETFEATURES_WC_OFF = 0x82, /* Disable write cache */
217
Mark Lord169439c2007-04-17 18:26:07 -0400218 SETFEATURES_SPINUP = 0x07, /* Spin-up drive */
219
Linus Torvalds1da177e2005-04-16 15:20:36 -0700220 /* ATAPI stuff */
221 ATAPI_PKT_DMA = (1 << 0),
222 ATAPI_DMADIR = (1 << 2), /* ATAPI data dir:
223 0=to device, 1=to host */
224 ATAPI_CDB_LEN = 16,
225
Tejun Heo814600e2007-07-01 19:05:58 +0900226 /* PMP stuff */
227 SATA_PMP_MAX_PORTS = 15,
228 SATA_PMP_CTRL_PORT = 15,
229
230 SATA_PMP_GSCR_DWORDS = 128,
231 SATA_PMP_GSCR_PROD_ID = 0,
232 SATA_PMP_GSCR_REV = 1,
233 SATA_PMP_GSCR_PORT_INFO = 2,
234 SATA_PMP_GSCR_ERROR = 32,
235 SATA_PMP_GSCR_ERROR_EN = 33,
236 SATA_PMP_GSCR_FEAT = 64,
237 SATA_PMP_GSCR_FEAT_EN = 96,
238
239 SATA_PMP_PSCR_STATUS = 0,
240 SATA_PMP_PSCR_ERROR = 1,
241 SATA_PMP_PSCR_CONTROL = 2,
242
243 SATA_PMP_FEAT_BIST = (1 << 0),
244 SATA_PMP_FEAT_PMREQ = (1 << 1),
245 SATA_PMP_FEAT_DYNSSC = (1 << 2),
246 SATA_PMP_FEAT_NOTIFY = (1 << 3),
247
Linus Torvalds1da177e2005-04-16 15:20:36 -0700248 /* cable types */
249 ATA_CBL_NONE = 0,
250 ATA_CBL_PATA40 = 1,
251 ATA_CBL_PATA80 = 2,
Alan Coxfc085152006-10-10 14:28:11 -0700252 ATA_CBL_PATA40_SHORT = 3, /* 40 wire cable to high UDMA spec */
253 ATA_CBL_PATA_UNK = 4,
254 ATA_CBL_SATA = 5,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700255
256 /* SATA Status and Control Registers */
257 SCR_STATUS = 0,
258 SCR_ERROR = 1,
259 SCR_CONTROL = 2,
260 SCR_ACTIVE = 3,
261 SCR_NOTIFICATION = 4,
262
Tejun Heo9be1e972006-05-15 20:58:17 +0900263 /* SError bits */
264 SERR_DATA_RECOVERED = (1 << 0), /* recovered data error */
265 SERR_COMM_RECOVERED = (1 << 1), /* recovered comm failure */
266 SERR_DATA = (1 << 8), /* unrecovered data error */
267 SERR_PERSISTENT = (1 << 9), /* persistent data/comm error */
268 SERR_PROTOCOL = (1 << 10), /* protocol violation */
269 SERR_INTERNAL = (1 << 11), /* host internal error */
270 SERR_PHYRDY_CHG = (1 << 16), /* PHY RDY changed */
271 SERR_DEV_XCHG = (1 << 26), /* device exchanged */
272
Linus Torvalds1da177e2005-04-16 15:20:36 -0700273 /* struct ata_taskfile flags */
274 ATA_TFLAG_LBA48 = (1 << 0), /* enable 48-bit LBA and "HOB" */
275 ATA_TFLAG_ISADDR = (1 << 1), /* enable r/w to nsect/lba regs */
276 ATA_TFLAG_DEVICE = (1 << 2), /* enable r/w to device reg */
277 ATA_TFLAG_WRITE = (1 << 3), /* data dir: host->dev==1 (write) */
Albert Lee8bf62ec2005-05-12 15:29:42 -0400278 ATA_TFLAG_LBA = (1 << 4), /* enable LBA */
Tejun Heo9a3dccc2006-01-06 09:56:18 +0100279 ATA_TFLAG_FUA = (1 << 5), /* enable FUA */
Jeff Garzikea9b3952006-01-17 10:29:06 -0500280 ATA_TFLAG_POLLING = (1 << 6), /* set nIEN to 1 and use polling */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700281};
282
283enum ata_tf_protocols {
284 /* ATA taskfile protocols */
285 ATA_PROT_UNKNOWN, /* unknown/invalid */
286 ATA_PROT_NODATA, /* no data */
Albert Lee1dce5892007-06-07 15:49:22 +0800287 ATA_PROT_PIO, /* PIO data xfer */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700288 ATA_PROT_DMA, /* DMA */
Tejun Heo88e49032006-05-15 21:03:38 +0900289 ATA_PROT_NCQ, /* NCQ */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700290 ATA_PROT_ATAPI, /* packet command, PIO data xfer*/
291 ATA_PROT_ATAPI_NODATA, /* packet command, no data */
292 ATA_PROT_ATAPI_DMA, /* packet command with special DMA sauce */
293};
294
295enum ata_ioctls {
296 ATA_IOC_GET_IO32 = 0x309,
297 ATA_IOC_SET_IO32 = 0x324,
298};
299
300/* core structures */
301
302struct ata_prd {
303 u32 addr;
304 u32 flags_len;
305};
306
307struct ata_taskfile {
308 unsigned long flags; /* ATA_TFLAG_xxx */
309 u8 protocol; /* ATA_PROT_xxx */
310
311 u8 ctl; /* control reg */
312
313 u8 hob_feature; /* additional data */
314 u8 hob_nsect; /* to support LBA48 */
315 u8 hob_lbal;
316 u8 hob_lbam;
317 u8 hob_lbah;
318
319 u8 feature;
320 u8 nsect;
321 u8 lbal;
322 u8 lbam;
323 u8 lbah;
324
325 u8 device;
326
327 u8 command; /* IO operation */
328};
329
330#define ata_id_is_ata(id) (((id)[0] & (1 << 15)) == 0)
331#define ata_id_rahead_enabled(id) ((id)[85] & (1 << 6))
332#define ata_id_wcache_enabled(id) ((id)[85] & (1 << 5))
Alan Coxb6782722006-03-21 15:52:49 +0000333#define ata_id_hpa_enabled(id) ((id)[85] & (1 << 10))
Tejun Heo9a3dccc2006-01-06 09:56:18 +0100334#define ata_id_has_fua(id) ((id)[84] & (1 << 6))
335#define ata_id_has_flush(id) ((id)[83] & (1 << 12))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700336#define ata_id_has_flush_ext(id) ((id)[83] & (1 << 13))
337#define ata_id_has_lba48(id) ((id)[83] & (1 << 10))
Alan Coxb6782722006-03-21 15:52:49 +0000338#define ata_id_has_hpa(id) ((id)[82] & (1 << 10))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700339#define ata_id_has_wcache(id) ((id)[82] & (1 << 5))
340#define ata_id_has_pm(id) ((id)[82] & (1 << 3))
341#define ata_id_has_lba(id) ((id)[49] & (1 << 9))
342#define ata_id_has_dma(id) ((id)[49] & (1 << 8))
Tejun Heo88e49032006-05-15 21:03:38 +0900343#define ata_id_has_ncq(id) ((id)[76] & (1 << 8))
344#define ata_id_queue_depth(id) (((id)[75] & 0x1f) + 1)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345#define ata_id_removeable(id) ((id)[0] & (1 << 7))
Alan Coxb6782722006-03-21 15:52:49 +0000346#define ata_id_has_dword_io(id) ((id)[50] & (1 << 0))
Alan49554c12007-02-05 16:17:19 +0000347#define ata_id_iordy_disable(id) ((id)[49] & (1 << 10))
348#define ata_id_has_iordy(id) ((id)[49] & (1 << 9))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700349#define ata_id_u32(id,n) \
350 (((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)]))
351#define ata_id_u64(id,n) \
352 ( ((u64) (id)[(n) + 3] << 48) | \
353 ((u64) (id)[(n) + 2] << 32) | \
354 ((u64) (id)[(n) + 1] << 16) | \
355 ((u64) (id)[(n) + 0]) )
356
Albert Lee312f7da2005-09-27 17:38:03 +0800357#define ata_id_cdb_intr(id) (((id)[0] & 0x60) == 0x20)
358
Tejun Heo3d2ca912006-02-12 22:47:04 +0900359static inline unsigned int ata_id_major_version(const u16 *id)
360{
361 unsigned int mver;
362
Alan Coxb352e572006-08-10 18:52:12 +0100363 if (id[ATA_ID_MAJOR_VER] == 0xFFFF)
364 return 0;
365
Tejun Heo3d2ca912006-02-12 22:47:04 +0900366 for (mver = 14; mver >= 1; mver--)
367 if (id[ATA_ID_MAJOR_VER] & (1 << mver))
368 break;
369 return mver;
370}
371
Tejun Heo32d90912007-02-21 20:25:08 +0900372static inline int ata_id_is_sata(const u16 *id)
373{
374 return ata_id_major_version(id) >= 5 && id[93] == 0;
375}
376
Jeff Garzik057ace52005-10-22 14:27:05 -0400377static inline int ata_id_current_chs_valid(const u16 *id)
Albert Lee8bf62ec2005-05-12 15:29:42 -0400378{
Jeff Garzik9bec2e32006-08-31 00:02:15 -0400379 /* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command
380 has not been issued to the device then the values of
Albert Lee8bf62ec2005-05-12 15:29:42 -0400381 id[54] to id[56] are vendor specific. */
382 return (id[53] & 0x01) && /* Current translation valid */
383 id[54] && /* cylinders in current translation */
384 id[55] && /* heads in current translation */
385 id[55] <= 16 &&
386 id[56]; /* sectors in current translation */
387}
388
Alan Coxb352e572006-08-10 18:52:12 +0100389static inline int ata_id_is_cfa(const u16 *id)
390{
391 u16 v = id[0];
392 if (v == 0x848A) /* Standard CF */
393 return 1;
394 /* Could be CF hiding as standard ATA */
395 if (ata_id_major_version(id) >= 3 && id[82] != 0xFFFF &&
396 (id[82] & ( 1 << 2)))
397 return 1;
398 return 0;
399}
400
Alan Coxfc085152006-10-10 14:28:11 -0700401static inline int ata_drive_40wire(const u16 *dev_id)
402{
Tejun Heo32d90912007-02-21 20:25:08 +0900403 if (ata_id_is_sata(dev_id))
Alan Coxfc085152006-10-10 14:28:11 -0700404 return 0; /* SATA */
Tejun Heo61f216c2007-02-05 23:21:19 +0900405 if ((dev_id[93] & 0xE000) == 0x6000)
Alan Coxfc085152006-10-10 14:28:11 -0700406 return 0; /* 80 wire */
407 return 1;
408}
409
Jeff Garzik057ace52005-10-22 14:27:05 -0400410static inline int atapi_cdb_len(const u16 *dev_id)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700411{
412 u16 tmp = dev_id[0] & 0x3;
413 switch (tmp) {
414 case 0: return 12;
415 case 1: return 16;
416 default: return -1;
417 }
418}
419
Jeff Garzik057ace52005-10-22 14:27:05 -0400420static inline int is_atapi_taskfile(const struct ata_taskfile *tf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700421{
422 return (tf->protocol == ATA_PROT_ATAPI) ||
423 (tf->protocol == ATA_PROT_ATAPI_NODATA) ||
424 (tf->protocol == ATA_PROT_ATAPI_DMA);
425}
426
Albert Lee07f6f7d2005-11-01 19:33:20 +0800427static inline int is_multi_taskfile(struct ata_taskfile *tf)
428{
429 return (tf->command == ATA_CMD_READ_MULTI) ||
430 (tf->command == ATA_CMD_WRITE_MULTI) ||
431 (tf->command == ATA_CMD_READ_MULTI_EXT) ||
Albert Leec2956a32006-03-03 10:34:05 +0800432 (tf->command == ATA_CMD_WRITE_MULTI_EXT) ||
433 (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT);
Albert Lee07f6f7d2005-11-01 19:33:20 +0800434}
435
Linus Torvalds1da177e2005-04-16 15:20:36 -0700436static inline int ata_ok(u8 status)
437{
438 return ((status & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ | ATA_ERR))
439 == ATA_DRDY);
440}
441
Albert Leec6a33e22005-10-12 15:12:26 +0800442static inline int lba_28_ok(u64 block, u32 n_block)
443{
444 /* check the ending block number */
445 return ((block + n_block - 1) < ((u64)1 << 28)) && (n_block <= 256);
446}
447
448static inline int lba_48_ok(u64 block, u32 n_block)
449{
450 /* check the ending block number */
451 return ((block + n_block - 1) < ((u64)1 << 48)) && (n_block <= 65536);
452}
453
Tejun Heo814600e2007-07-01 19:05:58 +0900454#define sata_pmp_gscr_vendor(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] & 0xffff)
455#define sata_pmp_gscr_devid(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] >> 16)
456#define sata_pmp_gscr_rev(gscr) (((gscr)[SATA_PMP_GSCR_REV] >> 8) & 0xff)
457#define sata_pmp_gscr_ports(gscr) ((gscr)[SATA_PMP_GSCR_PORT_INFO] & 0xf)
458
Linus Torvalds1da177e2005-04-16 15:20:36 -0700459#endif /* __LINUX_ATA_H__ */