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Merge tag 'remoteproc-for-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/ohad...
[deliverable/linux.git] / include / linux / ata.h
CommitLineData
1da177e4
LT		 1
2/*
af36d7f0
JG		 3 * 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 *
1da177e4
LT		 27 */
28
29#ifndef __LINUX_ATA_H__
30#define __LINUX_ATA_H__
31
0c659b82
MW		 32#include <linux/kernel.h>
33#include <linux/string.h>
1da177e4 34#include <linux/types.h>
93734a23 35#include <asm/byteorder.h>
1da177e4
LT		 36
37/* defines only for the constants which don't work well as enums */
38#define ATA_DMA_BOUNDARY 0xffffUL
39#define ATA_DMA_MASK 0xffffffffULL
40
41enum {
42 /* various global constants */
43 ATA_MAX_DEVICES = 2, /* per bus/port */
44 ATA_MAX_PRD = 256, /* we could make these 256/256 */
45 ATA_SECT_SIZE = 512,
18d6e9d5 46 ATA_MAX_SECTORS_128 = 128,
8b881b04
JG		 47 ATA_MAX_SECTORS = 256,
48 ATA_MAX_SECTORS_LBA48 = 65535,/* TODO: 65536? */
f8d8e579 49 ATA_MAX_SECTORS_TAPE = 65535,
1da177e4
LT		 50
51 ATA_ID_WORDS = 256,
37014c64
BZ		 52 ATA_ID_CONFIG = 0,
53 ATA_ID_CYLS = 1,
54 ATA_ID_HEADS = 3,
55 ATA_ID_SECTORS = 6,
a0cf733b 56 ATA_ID_SERNO = 10,
37014c64 57 ATA_ID_BUF_SIZE = 21,
a0cf733b
TH		 58 ATA_ID_FW_REV = 23,
59 ATA_ID_PROD = 27,
37014c64
BZ		 60 ATA_ID_MAX_MULTSECT = 47,
61 ATA_ID_DWORD_IO = 48,
62 ATA_ID_CAPABILITY = 49,
11e29e21 63 ATA_ID_OLD_PIO_MODES = 51,
37014c64 64 ATA_ID_OLD_DMA_MODES = 52,
11e29e21 65 ATA_ID_FIELD_VALID = 53,
37014c64
BZ		 66 ATA_ID_CUR_CYLS = 54,
67 ATA_ID_CUR_HEADS = 55,
68 ATA_ID_CUR_SECTORS = 56,
69 ATA_ID_MULTSECT = 59,
70 ATA_ID_LBA_CAPACITY = 60,
71 ATA_ID_SWDMA_MODES = 62,
1da177e4 72 ATA_ID_MWDMA_MODES = 63,
11e29e21
AC		 73 ATA_ID_PIO_MODES = 64,
74 ATA_ID_EIDE_DMA_MIN = 65,
37014c64 75 ATA_ID_EIDE_DMA_TIME = 66,
11e29e21
AC		 76 ATA_ID_EIDE_PIO = 67,
77 ATA_ID_EIDE_PIO_IORDY = 68,
e78db4df 78 ATA_ID_ADDITIONAL_SUPP = 69,
37014c64 79 ATA_ID_QUEUE_DEPTH = 75,
583661a8
SH		 80 ATA_ID_SATA_CAPABILITY = 76,
81 ATA_ID_SATA_CAPABILITY_2 = 77,
82 ATA_ID_FEATURE_SUPP = 78,
11e29e21 83 ATA_ID_MAJOR_VER = 80,
37014c64
BZ		 84 ATA_ID_COMMAND_SET_1 = 82,
85 ATA_ID_COMMAND_SET_2 = 83,
86 ATA_ID_CFSSE = 84,
87 ATA_ID_CFS_ENABLE_1 = 85,
88 ATA_ID_CFS_ENABLE_2 = 86,
89 ATA_ID_CSF_DEFAULT = 87,
90 ATA_ID_UDMA_MODES = 88,
91 ATA_ID_HW_CONFIG = 93,
92 ATA_ID_SPG = 98,
93 ATA_ID_LBA_CAPACITY_2 = 100,
18f0f978 94 ATA_ID_SECTOR_SIZE = 106,
6b3b9d73 95 ATA_ID_WWN = 108,
295124dc 96 ATA_ID_LOGICAL_SECTOR_SIZE = 117, /* and 118 */
37014c64
BZ		 97 ATA_ID_LAST_LUN = 126,
98 ATA_ID_DLF = 128,
99 ATA_ID_CSFO = 129,
100 ATA_ID_CFA_POWER = 160,
d42ad15b
SS		 101 ATA_ID_CFA_KEY_MGMT = 162,
102 ATA_ID_CFA_MODES = 163,
0c659b82 103 ATA_ID_DATA_SET_MGMT = 169,
8bff7c6b 104 ATA_ID_ROT_SPEED = 217,
1da177e4
LT		 105 ATA_ID_PIO4 = (1 << 1),
106
a0cf733b
TH		 107 ATA_ID_SERNO_LEN = 20,
108 ATA_ID_FW_REV_LEN = 8,
109 ATA_ID_PROD_LEN = 40,
6b3b9d73 110 ATA_ID_WWN_LEN = 8,
a0cf733b 111
1da177e4 112 ATA_PCI_CTL_OFS = 2,
4099d143
BZ		 113
114 ATA_PIO0 = (1 << 0),
115 ATA_PIO1 = ATA_PIO0 | (1 << 1),
116 ATA_PIO2 = ATA_PIO1 | (1 << 2),
117 ATA_PIO3 = ATA_PIO2 | (1 << 3),
118 ATA_PIO4 = ATA_PIO3 | (1 << 4),
119 ATA_PIO5 = ATA_PIO4 | (1 << 5),
120 ATA_PIO6 = ATA_PIO5 | (1 << 6),
121
22ddbd1e
EIB		 122 ATA_PIO4_ONLY = (1 << 4),
123
91a6d4ed
BZ		 124 ATA_SWDMA0 = (1 << 0),
125 ATA_SWDMA1 = ATA_SWDMA0 | (1 << 1),
126 ATA_SWDMA2 = ATA_SWDMA1 | (1 << 2),
127
128 ATA_SWDMA2_ONLY = (1 << 2),
129
130 ATA_MWDMA0 = (1 << 0),
131 ATA_MWDMA1 = ATA_MWDMA0 | (1 << 1),
132 ATA_MWDMA2 = ATA_MWDMA1 | (1 << 2),
22ddbd1e
EIB		 133 ATA_MWDMA3 = ATA_MWDMA2 | (1 << 3),
134 ATA_MWDMA4 = ATA_MWDMA3 | (1 << 4),
91a6d4ed
BZ		 135
136 ATA_MWDMA12_ONLY = (1 << 1) | (1 << 2),
137 ATA_MWDMA2_ONLY = (1 << 2),
138
1da177e4
LT		 139 ATA_UDMA0 = (1 << 0),
140 ATA_UDMA1 = ATA_UDMA0 | (1 << 1),
141 ATA_UDMA2 = ATA_UDMA1 | (1 << 2),
142 ATA_UDMA3 = ATA_UDMA2 | (1 << 3),
143 ATA_UDMA4 = ATA_UDMA3 | (1 << 4),
144 ATA_UDMA5 = ATA_UDMA4 | (1 << 5),
145 ATA_UDMA6 = ATA_UDMA5 | (1 << 6),
146 ATA_UDMA7 = ATA_UDMA6 | (1 << 7),
147 /* ATA_UDMA7 is just for completeness... doesn't exist (yet?). */
148
22ddbd1e
EIB		 149 ATA_UDMA24_ONLY = (1 << 2) | (1 << 4),
150
1da177e4
LT		 151 ATA_UDMA_MASK_40C = ATA_UDMA2, /* udma0-2 */
152
153 /* DMA-related */
154 ATA_PRD_SZ = 8,
155 ATA_PRD_TBL_SZ = (ATA_MAX_PRD * ATA_PRD_SZ),
156 ATA_PRD_EOT = (1 << 31), /* end-of-table flag */
157
158 ATA_DMA_TABLE_OFS = 4,
159 ATA_DMA_STATUS = 2,
160 ATA_DMA_CMD = 0,
161 ATA_DMA_WR = (1 << 3),
162 ATA_DMA_START = (1 << 0),
163 ATA_DMA_INTR = (1 << 2),
164 ATA_DMA_ERR = (1 << 1),
165 ATA_DMA_ACTIVE = (1 << 0),
166
167 /* bits in ATA command block registers */
168 ATA_HOB = (1 << 7), /* LBA48 selector */
169 ATA_NIEN = (1 << 1), /* disable-irq flag */
170 ATA_LBA = (1 << 6), /* LBA28 selector */
171 ATA_DEV1 = (1 << 4), /* Select Device 1 (slave) */
172 ATA_DEVICE_OBS = (1 << 7) | (1 << 5), /* obs bits in dev reg */
173 ATA_DEVCTL_OBS = (1 << 3), /* obsolete bit in devctl reg */
174 ATA_BUSY = (1 << 7), /* BSY status bit */
175 ATA_DRDY = (1 << 6), /* device ready */
176 ATA_DF = (1 << 5), /* device fault */
b5911620 177 ATA_DSC = (1 << 4), /* drive seek complete */
1da177e4 178 ATA_DRQ = (1 << 3), /* data request i/o */
b5911620
BZ		 179 ATA_CORR = (1 << 2), /* corrected data error */
180 ATA_IDX = (1 << 1), /* index */
1da177e4
LT		 181 ATA_ERR = (1 << 0), /* have an error */
182 ATA_SRST = (1 << 2), /* software reset */
9be1e979 183 ATA_ICRC = (1 << 7), /* interface CRC error */
b5911620 184 ATA_BBK = ATA_ICRC, /* pre-EIDE: block marked bad */
9be1e979 185 ATA_UNC = (1 << 6), /* uncorrectable media error */
b5911620 186 ATA_MC = (1 << 5), /* media changed */
9be1e979 187 ATA_IDNF = (1 << 4), /* ID not found */
b5911620 188 ATA_MCR = (1 << 3), /* media change requested */
1da177e4 189 ATA_ABORTED = (1 << 2), /* command aborted */
b5911620
BZ		 190 ATA_TRK0NF = (1 << 1), /* track 0 not found */
191 ATA_AMNF = (1 << 0), /* address mark not found */
192 ATAPI_LFS = 0xF0, /* last failed sense */
193 ATAPI_EOM = ATA_TRK0NF, /* end of media */
194 ATAPI_ILI = ATA_AMNF, /* illegal length indication */
195 ATAPI_IO = (1 << 1),
196 ATAPI_COD = (1 << 0),
1da177e4
LT		 197
198 /* ATA command block registers */
199 ATA_REG_DATA = 0x00,
200 ATA_REG_ERR = 0x01,
201 ATA_REG_NSECT = 0x02,
202 ATA_REG_LBAL = 0x03,
203 ATA_REG_LBAM = 0x04,
204 ATA_REG_LBAH = 0x05,
205 ATA_REG_DEVICE = 0x06,
206 ATA_REG_STATUS = 0x07,
207
208 ATA_REG_FEATURE = ATA_REG_ERR, /* and their aliases */
209 ATA_REG_CMD = ATA_REG_STATUS,
210 ATA_REG_BYTEL = ATA_REG_LBAM,
211 ATA_REG_BYTEH = ATA_REG_LBAH,
212 ATA_REG_DEVSEL = ATA_REG_DEVICE,
213 ATA_REG_IRQ = ATA_REG_NSECT,
214
215 /* ATA device commands */
ab2181cf 216 ATA_CMD_DEV_RESET = 0x08, /* ATAPI device reset */
1da177e4 217 ATA_CMD_CHK_POWER = 0xE5, /* check power mode */
972dcafb
DG		 218 ATA_CMD_STANDBY = 0xE2, /* place in standby power mode */
219 ATA_CMD_IDLE = 0xE3, /* place in idle power mode */
1da177e4 220 ATA_CMD_EDD = 0x90, /* execute device diagnostic */
6521148c
RH		 221 ATA_CMD_DOWNLOAD_MICRO = 0x92,
222 ATA_CMD_NOP = 0x00,
1da177e4
LT		 223 ATA_CMD_FLUSH = 0xE7,
224 ATA_CMD_FLUSH_EXT = 0xEA,
225 ATA_CMD_ID_ATA = 0xEC,
226 ATA_CMD_ID_ATAPI = 0xA1,
6521148c 227 ATA_CMD_SERVICE = 0xA2,
1da177e4
LT		 228 ATA_CMD_READ = 0xC8,
229 ATA_CMD_READ_EXT = 0x25,
6521148c
RH		 230 ATA_CMD_READ_QUEUED = 0x26,
231 ATA_CMD_READ_STREAM_EXT = 0x2B,
232 ATA_CMD_READ_STREAM_DMA_EXT = 0x2A,
1da177e4
LT		 233 ATA_CMD_WRITE = 0xCA,
234 ATA_CMD_WRITE_EXT = 0x35,
6521148c
RH		 235 ATA_CMD_WRITE_QUEUED = 0x36,
236 ATA_CMD_WRITE_STREAM_EXT = 0x3B,
237 ATA_CMD_WRITE_STREAM_DMA_EXT = 0x3A,
9a3dccc4 238 ATA_CMD_WRITE_FUA_EXT = 0x3D,
6521148c 239 ATA_CMD_WRITE_QUEUED_FUA_EXT = 0x3E,
88e49034
TH		 240 ATA_CMD_FPDMA_READ = 0x60,
241 ATA_CMD_FPDMA_WRITE = 0x61,
1da177e4
LT		 242 ATA_CMD_PIO_READ = 0x20,
243 ATA_CMD_PIO_READ_EXT = 0x24,
244 ATA_CMD_PIO_WRITE = 0x30,
245 ATA_CMD_PIO_WRITE_EXT = 0x34,
8cbd6df1
AL		 246 ATA_CMD_READ_MULTI = 0xC4,
247 ATA_CMD_READ_MULTI_EXT = 0x29,
248 ATA_CMD_WRITE_MULTI = 0xC5,
249 ATA_CMD_WRITE_MULTI_EXT = 0x39,
9a3dccc4 250 ATA_CMD_WRITE_MULTI_FUA_EXT = 0xCE,
1da177e4 251 ATA_CMD_SET_FEATURES = 0xEF,
2c3d2a46 252 ATA_CMD_SET_MULTI = 0xC6,
1da177e4
LT		 253 ATA_CMD_PACKET = 0xA0,
254 ATA_CMD_VERIFY = 0x40,
255 ATA_CMD_VERIFY_EXT = 0x42,
6521148c 256 ATA_CMD_WRITE_UNCORR_EXT = 0x45,
2dcb407e
JG		 257 ATA_CMD_STANDBYNOW1 = 0xE0,
258 ATA_CMD_IDLEIMMEDIATE = 0xE1,
054a5fba 259 ATA_CMD_SLEEP = 0xE6,
8bf62ece 260 ATA_CMD_INIT_DEV_PARAMS = 0x91,
b6782728
AC		 261 ATA_CMD_READ_NATIVE_MAX = 0xF8,
262 ATA_CMD_READ_NATIVE_MAX_EXT = 0x27,
1e999736
AC		 263 ATA_CMD_SET_MAX = 0xF9,
264 ATA_CMD_SET_MAX_EXT = 0x37,
6521148c
RH		 265 ATA_CMD_READ_LOG_EXT = 0x2F,
266 ATA_CMD_WRITE_LOG_EXT = 0x3F,
267 ATA_CMD_READ_LOG_DMA_EXT = 0x47,
268 ATA_CMD_WRITE_LOG_DMA_EXT = 0x57,
269 ATA_CMD_TRUSTED_RCV = 0x5C,
270 ATA_CMD_TRUSTED_RCV_DMA = 0x5D,
271 ATA_CMD_TRUSTED_SND = 0x5E,
272 ATA_CMD_TRUSTED_SND_DMA = 0x5F,
814600ee
TH		 273 ATA_CMD_PMP_READ = 0xE4,
274 ATA_CMD_PMP_WRITE = 0xE8,
ce2e0abb 275 ATA_CMD_CONF_OVERLAY = 0xB1,
6521148c
RH		 276 ATA_CMD_SEC_SET_PASS = 0xF1,
277 ATA_CMD_SEC_UNLOCK = 0xF2,
278 ATA_CMD_SEC_ERASE_PREP = 0xF3,
279 ATA_CMD_SEC_ERASE_UNIT = 0xF4,
ce2e0abb 280 ATA_CMD_SEC_FREEZE_LOCK = 0xF5,
6521148c
RH		 281 ATA_CMD_SEC_DISABLE_PASS = 0xF6,
282 ATA_CMD_CONFIG_STREAM = 0x51,
476d9894
BZ		 283 ATA_CMD_SMART = 0xB0,
284 ATA_CMD_MEDIA_LOCK = 0xDE,
285 ATA_CMD_MEDIA_UNLOCK = 0xDF,
0c659b82 286 ATA_CMD_DSM = 0x06,
6521148c
RH		 287 ATA_CMD_CHK_MED_CRD_TYP = 0xD1,
288 ATA_CMD_CFA_REQ_EXT_ERR = 0x03,
289 ATA_CMD_CFA_WRITE_NE = 0x38,
290 ATA_CMD_CFA_TRANS_SECT = 0x87,
291 ATA_CMD_CFA_ERASE = 0xC0,
292 ATA_CMD_CFA_WRITE_MULT_NE = 0xCD,
476d9894
BZ		 293 /* marked obsolete in the ATA/ATAPI-7 spec */
294 ATA_CMD_RESTORE = 0x10,
88e49034
TH		 295
296 /* READ_LOG_EXT pages */
297 ATA_LOG_SATA_NCQ = 0x10,
65fe1f0f
SH		 298 ATA_LOG_SATA_ID_DEV_DATA = 0x30,
299 ATA_LOG_SATA_SETTINGS = 0x08,
300 ATA_LOG_DEVSLP_MDAT = 0x30,
301 ATA_LOG_DEVSLP_MDAT_MASK = 0x1F,
302 ATA_LOG_DEVSLP_DETO = 0x31,
303 ATA_LOG_DEVSLP_VALID = 0x37,
304 ATA_LOG_DEVSLP_VALID_MASK = 0x80,
1da177e4 305
5a5dbd18
ML		 306 /* READ/WRITE LONG (obsolete) */
307 ATA_CMD_READ_LONG = 0x22,
308 ATA_CMD_READ_LONG_ONCE = 0x23,
309 ATA_CMD_WRITE_LONG = 0x32,
310 ATA_CMD_WRITE_LONG_ONCE = 0x33,
311
1da177e4
LT		 312 /* SETFEATURES stuff */
313 SETFEATURES_XFER = 0x03,
314 XFER_UDMA_7 = 0x47,
315 XFER_UDMA_6 = 0x46,
316 XFER_UDMA_5 = 0x45,
317 XFER_UDMA_4 = 0x44,
318 XFER_UDMA_3 = 0x43,
319 XFER_UDMA_2 = 0x42,
320 XFER_UDMA_1 = 0x41,
321 XFER_UDMA_0 = 0x40,
b352e57d
AC		 322 XFER_MW_DMA_4 = 0x24, /* CFA only */
323 XFER_MW_DMA_3 = 0x23, /* CFA only */
1da177e4
LT		 324 XFER_MW_DMA_2 = 0x22,
325 XFER_MW_DMA_1 = 0x21,
326 XFER_MW_DMA_0 = 0x20,
b4b52db7
AC		 327 XFER_SW_DMA_2 = 0x12,
328 XFER_SW_DMA_1 = 0x11,
329 XFER_SW_DMA_0 = 0x10,
b352e57d
AC		 330 XFER_PIO_6 = 0x0E, /* CFA only */
331 XFER_PIO_5 = 0x0D, /* CFA only */
1da177e4
LT		 332 XFER_PIO_4 = 0x0C,
333 XFER_PIO_3 = 0x0B,
334 XFER_PIO_2 = 0x0A,
335 XFER_PIO_1 = 0x09,
336 XFER_PIO_0 = 0x08,
1da177e4
LT		 337 XFER_PIO_SLOW = 0x00,
338
3057ac3c 339 SETFEATURES_WC_ON = 0x02, /* Enable write cache */
340 SETFEATURES_WC_OFF = 0x82, /* Disable write cache */
341
476d9894
BZ		 342 /* Enable/Disable Automatic Acoustic Management */
343 SETFEATURES_AAM_ON = 0x42,
344 SETFEATURES_AAM_OFF = 0xC2,
345
169439c2
ML		 346 SETFEATURES_SPINUP = 0x07, /* Spin-up drive */
347
9f45cbd3
KCA		 348 SETFEATURES_SATA_ENABLE = 0x10, /* Enable use of SATA feature */
349 SETFEATURES_SATA_DISABLE = 0x90, /* Disable use of SATA feature */
350
351 /* SETFEATURE Sector counts for SATA features */
fa5b561c 352 SATA_FPDMA_OFFSET = 0x01, /* FPDMA non-zero buffer offsets */
f1bce7f8
TH		 353 SATA_FPDMA_AA = 0x02, /* FPDMA Setup FIS Auto-Activate */
354 SATA_DIPM = 0x03, /* Device Initiated Power Management */
fa5b561c 355 SATA_FPDMA_IN_ORDER = 0x04, /* FPDMA in-order data delivery */
f1bce7f8 356 SATA_AN = 0x05, /* Asynchronous Notification */
fa5b561c 357 SATA_SSP = 0x06, /* Software Settings Preservation */
65fe1f0f 358 SATA_DEVSLP = 0x09, /* Device Sleep */
9f45cbd3 359
ce2e0abb
TH		 360 /* feature values for SET_MAX */
361 ATA_SET_MAX_ADDR = 0x00,
362 ATA_SET_MAX_PASSWD = 0x01,
363 ATA_SET_MAX_LOCK = 0x02,
364 ATA_SET_MAX_UNLOCK = 0x03,
365 ATA_SET_MAX_FREEZE_LOCK = 0x04,
366
367 /* feature values for DEVICE CONFIGURATION OVERLAY */
368 ATA_DCO_RESTORE = 0xC0,
369 ATA_DCO_FREEZE_LOCK = 0xC1,
370 ATA_DCO_IDENTIFY = 0xC2,
371 ATA_DCO_SET = 0xC3,
372
476d9894
BZ		 373 /* feature values for SMART */
374 ATA_SMART_ENABLE = 0xD8,
375 ATA_SMART_READ_VALUES = 0xD0,
376 ATA_SMART_READ_THRESHOLDS = 0xD1,
377
0c659b82
MW		 378 /* feature values for Data Set Management */
379 ATA_DSM_TRIM = 0x01,
380
476d9894
BZ		 381 /* password used in LBA Mid / LBA High for executing SMART commands */
382 ATA_SMART_LBAM_PASS = 0x4F,
383 ATA_SMART_LBAH_PASS = 0xC2,
384
1da177e4
LT		 385 /* ATAPI stuff */
386 ATAPI_PKT_DMA = (1 << 0),
387 ATAPI_DMADIR = (1 << 2), /* ATAPI data dir:
388 0=to device, 1=to host */
389 ATAPI_CDB_LEN = 16,
390
814600ee
TH		 391 /* PMP stuff */
392 SATA_PMP_MAX_PORTS = 15,
393 SATA_PMP_CTRL_PORT = 15,
394
395 SATA_PMP_GSCR_DWORDS = 128,
396 SATA_PMP_GSCR_PROD_ID = 0,
397 SATA_PMP_GSCR_REV = 1,
398 SATA_PMP_GSCR_PORT_INFO = 2,
399 SATA_PMP_GSCR_ERROR = 32,
400 SATA_PMP_GSCR_ERROR_EN = 33,
401 SATA_PMP_GSCR_FEAT = 64,
402 SATA_PMP_GSCR_FEAT_EN = 96,
403
404 SATA_PMP_PSCR_STATUS = 0,
405 SATA_PMP_PSCR_ERROR = 1,
406 SATA_PMP_PSCR_CONTROL = 2,
407
408 SATA_PMP_FEAT_BIST = (1 << 0),
409 SATA_PMP_FEAT_PMREQ = (1 << 1),
410 SATA_PMP_FEAT_DYNSSC = (1 << 2),
411 SATA_PMP_FEAT_NOTIFY = (1 << 3),
412
1da177e4
LT		 413 /* cable types */
414 ATA_CBL_NONE = 0,
415 ATA_CBL_PATA40 = 1,
416 ATA_CBL_PATA80 = 2,
c88f90c3
TH		 417 ATA_CBL_PATA40_SHORT = 3, /* 40 wire cable to high UDMA spec */
418 ATA_CBL_PATA_UNK = 4, /* don't know, maybe 80c? */
419 ATA_CBL_PATA_IGN = 5, /* don't know, ignore cable handling */
420 ATA_CBL_SATA = 6,
1da177e4
LT		 421
422 /* SATA Status and Control Registers */
423 SCR_STATUS = 0,
424 SCR_ERROR = 1,
425 SCR_CONTROL = 2,
426 SCR_ACTIVE = 3,
427 SCR_NOTIFICATION = 4,
428
9be1e979
TH		 429 /* SError bits */
430 SERR_DATA_RECOVERED = (1 << 0), /* recovered data error */
431 SERR_COMM_RECOVERED = (1 << 1), /* recovered comm failure */
432 SERR_DATA = (1 << 8), /* unrecovered data error */
433 SERR_PERSISTENT = (1 << 9), /* persistent data/comm error */
434 SERR_PROTOCOL = (1 << 10), /* protocol violation */
435 SERR_INTERNAL = (1 << 11), /* host internal error */
436 SERR_PHYRDY_CHG = (1 << 16), /* PHY RDY changed */
1333e194
RH		 437 SERR_PHY_INT_ERR = (1 << 17), /* PHY internal error */
438 SERR_COMM_WAKE = (1 << 18), /* Comm wake */
439 SERR_10B_8B_ERR = (1 << 19), /* 10b to 8b decode error */
440 SERR_DISPARITY = (1 << 20), /* Disparity */
441 SERR_CRC = (1 << 21), /* CRC error */
442 SERR_HANDSHAKE = (1 << 22), /* Handshake error */
443 SERR_LINK_SEQ_ERR = (1 << 23), /* Link sequence error */
444 SERR_TRANS_ST_ERROR = (1 << 24), /* Transport state trans. error */
445 SERR_UNRECOG_FIS = (1 << 25), /* Unrecognized FIS */
9be1e979
TH		 446 SERR_DEV_XCHG = (1 << 26), /* device exchanged */
447
1da177e4
LT		 448 /* struct ata_taskfile flags */
449 ATA_TFLAG_LBA48 = (1 << 0), /* enable 48-bit LBA and "HOB" */
450 ATA_TFLAG_ISADDR = (1 << 1), /* enable r/w to nsect/lba regs */
451 ATA_TFLAG_DEVICE = (1 << 2), /* enable r/w to device reg */
452 ATA_TFLAG_WRITE = (1 << 3), /* data dir: host->dev==1 (write) */
8bf62ece 453 ATA_TFLAG_LBA = (1 << 4), /* enable LBA */
9a3dccc4 454 ATA_TFLAG_FUA = (1 << 5), /* enable FUA */
ea9b395f 455 ATA_TFLAG_POLLING = (1 << 6), /* set nIEN to 1 and use polling */
405e66b3
TH		 456
457 /* protocol flags */
458 ATA_PROT_FLAG_PIO = (1 << 0), /* is PIO */
459 ATA_PROT_FLAG_DMA = (1 << 1), /* is DMA */
460 ATA_PROT_FLAG_DATA = ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA,
461 ATA_PROT_FLAG_NCQ = (1 << 2), /* is NCQ */
462 ATA_PROT_FLAG_ATAPI = (1 << 3), /* is ATAPI */
1da177e4
LT		 463};
464
465enum ata_tf_protocols {
466 /* ATA taskfile protocols */
467 ATA_PROT_UNKNOWN, /* unknown/invalid */
468 ATA_PROT_NODATA, /* no data */
1dce589c 469 ATA_PROT_PIO, /* PIO data xfer */
1da177e4 470 ATA_PROT_DMA, /* DMA */
88e49034 471 ATA_PROT_NCQ, /* NCQ */
0dc36888
TH		 472 ATAPI_PROT_NODATA, /* packet command, no data */
473 ATAPI_PROT_PIO, /* packet command, PIO data xfer*/
474 ATAPI_PROT_DMA, /* packet command with special DMA sauce */
1da177e4
LT		 475};
476
477enum ata_ioctls {
478 ATA_IOC_GET_IO32 = 0x309,
479 ATA_IOC_SET_IO32 = 0x324,
480};
481
482/* core structures */
483
f60d7011 484struct ata_bmdma_prd {
4ca4e439
AV		 485 __le32 addr;
486 __le32 flags_len;
1da177e4
LT		 487};
488
489struct ata_taskfile {
490 unsigned long flags; /* ATA_TFLAG_xxx */
491 u8 protocol; /* ATA_PROT_xxx */
492
493 u8 ctl; /* control reg */
494
495 u8 hob_feature; /* additional data */
496 u8 hob_nsect; /* to support LBA48 */
497 u8 hob_lbal;
498 u8 hob_lbam;
499 u8 hob_lbah;
500
501 u8 feature;
502 u8 nsect;
503 u8 lbal;
504 u8 lbam;
505 u8 lbah;
506
507 u8 device;
508
509 u8 command; /* IO operation */
510};
511
405e66b3
TH		 512/*
513 * protocol tests
514 */
515static inline unsigned int ata_prot_flags(u8 prot)
516{
517 switch (prot) {
518 case ATA_PROT_NODATA:
519 return 0;
520 case ATA_PROT_PIO:
521 return ATA_PROT_FLAG_PIO;
522 case ATA_PROT_DMA:
523 return ATA_PROT_FLAG_DMA;
524 case ATA_PROT_NCQ:
525 return ATA_PROT_FLAG_DMA | ATA_PROT_FLAG_NCQ;
0dc36888 526 case ATAPI_PROT_NODATA:
405e66b3 527 return ATA_PROT_FLAG_ATAPI;
0dc36888 528 case ATAPI_PROT_PIO:
405e66b3 529 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_PIO;
0dc36888 530 case ATAPI_PROT_DMA:
405e66b3
TH		 531 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_DMA;
532 }
533 return 0;
534}
535
536static inline int ata_is_atapi(u8 prot)
537{
538 return ata_prot_flags(prot) & ATA_PROT_FLAG_ATAPI;
539}
540
541static inline int ata_is_nodata(u8 prot)
542{
543 return !(ata_prot_flags(prot) & ATA_PROT_FLAG_DATA);
544}
545
546static inline int ata_is_pio(u8 prot)
547{
548 return ata_prot_flags(prot) & ATA_PROT_FLAG_PIO;
549}
550
551static inline int ata_is_dma(u8 prot)
552{
553 return ata_prot_flags(prot) & ATA_PROT_FLAG_DMA;
554}
555
556static inline int ata_is_ncq(u8 prot)
557{
558 return ata_prot_flags(prot) & ATA_PROT_FLAG_NCQ;
559}
560
561static inline int ata_is_data(u8 prot)
562{
563 return ata_prot_flags(prot) & ATA_PROT_FLAG_DATA;
564}
565
566/*
567 * id tests
568 */
37014c64
BZ		 569#define ata_id_is_ata(id) (((id)[ATA_ID_CONFIG] & (1 << 15)) == 0)
570#define ata_id_has_lba(id) ((id)[ATA_ID_CAPABILITY] & (1 << 9))
571#define ata_id_has_dma(id) ((id)[ATA_ID_CAPABILITY] & (1 << 8))
583661a8 572#define ata_id_has_ncq(id) ((id)[ATA_ID_SATA_CAPABILITY] & (1 << 8))
37014c64
BZ		 573#define ata_id_queue_depth(id) (((id)[ATA_ID_QUEUE_DEPTH] & 0x1f) + 1)
574#define ata_id_removeable(id) ((id)[ATA_ID_CONFIG] & (1 << 7))
854c73a2 575#define ata_id_has_atapi_AN(id) \
583661a8
SH		 576 ((((id)[ATA_ID_SATA_CAPABILITY] != 0x0000) && \
577 ((id)[ATA_ID_SATA_CAPABILITY] != 0xffff)) && \
578 ((id)[ATA_ID_FEATURE_SUPP] & (1 << 5)))
388539f3 579#define ata_id_has_fpdma_aa(id) \
583661a8
SH		 580 ((((id)[ATA_ID_SATA_CAPABILITY] != 0x0000) && \
581 ((id)[ATA_ID_SATA_CAPABILITY] != 0xffff)) && \
582 ((id)[ATA_ID_FEATURE_SUPP] & (1 << 2)))
37014c64
BZ		 583#define ata_id_iordy_disable(id) ((id)[ATA_ID_CAPABILITY] & (1 << 10))
584#define ata_id_has_iordy(id) ((id)[ATA_ID_CAPABILITY] & (1 << 11))
1da177e4
LT		 585#define ata_id_u32(id,n) \
586 (((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)]))
587#define ata_id_u64(id,n) \
588 ( ((u64) (id)[(n) + 3] << 48) | \
589 ((u64) (id)[(n) + 2] << 32) | \
590 ((u64) (id)[(n) + 1] << 16) | \
591 ((u64) (id)[(n) + 0]) )
592
37014c64 593#define ata_id_cdb_intr(id) (((id)[ATA_ID_CONFIG] & 0x60) == 0x20)
583661a8 594#define ata_id_has_da(id) ((id)[ATA_ID_SATA_CAPABILITY_2] & (1 << 4))
65fe1f0f 595#define ata_id_has_devslp(id) ((id)[ATA_ID_FEATURE_SUPP] & (1 << 8))
312f7da2 596
ca77329f
KCA		 597static inline bool ata_id_has_hipm(const u16 *id)
598{
583661a8 599 u16 val = id[ATA_ID_SATA_CAPABILITY];
ca77329f
KCA		 600
601 if (val == 0 || val == 0xffff)
602 return false;
603
604 return val & (1 << 9);
605}
606
607static inline bool ata_id_has_dipm(const u16 *id)
608{
583661a8 609 u16 val = id[ATA_ID_FEATURE_SUPP];
ca77329f
KCA		 610
611 if (val == 0 || val == 0xffff)
612 return false;
613
614 return val & (1 << 3);
615}
616
ae8d4ee7 617
4dce8ba9 618static inline bool ata_id_has_fua(const u16 *id)
c7293870 619{
37014c64 620 if ((id[ATA_ID_CFSSE] & 0xC000) != 0x4000)
4dce8ba9 621 return false;
37014c64 622 return id[ATA_ID_CFSSE] & (1 << 6);
c7293870
AC		 623}
624
4dce8ba9 625static inline bool ata_id_has_flush(const u16 *id)
c7293870 626{
37014c64 627 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
4dce8ba9 628 return false;
37014c64 629 return id[ATA_ID_COMMAND_SET_2] & (1 << 12);
c7293870
AC		 630}
631
4dce8ba9 632static inline bool ata_id_flush_enabled(const u16 *id)
4b58f17d
BZ		 633{
634 if (ata_id_has_flush(id) == 0)
4dce8ba9 635 return false;
4b58f17d 636 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
4dce8ba9 637 return false;
4b58f17d
BZ		 638 return id[ATA_ID_CFS_ENABLE_2] & (1 << 12);
639}
640
4dce8ba9 641static inline bool ata_id_has_flush_ext(const u16 *id)
c7293870 642{
37014c64 643 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
4dce8ba9 644 return false;
37014c64 645 return id[ATA_ID_COMMAND_SET_2] & (1 << 13);
c7293870
AC		 646}
647
4dce8ba9 648static inline bool ata_id_flush_ext_enabled(const u16 *id)
ff2779b5
BZ		 649{
650 if (ata_id_has_flush_ext(id) == 0)
4dce8ba9 651 return false;
ff2779b5 652 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
4dce8ba9 653 return false;
ff2779b5
BZ		 654 /*
655 * some Maxtor disks have bit 13 defined incorrectly
656 * so check bit 10 too
657 */
658 return (id[ATA_ID_CFS_ENABLE_2] & 0x2400) == 0x2400;
659}
660
295124dc 661static inline u32 ata_id_logical_sector_size(const u16 *id)
18f0f978 662{
295124dc
GG		 663 /* T13/1699-D Revision 6a, Sep 6, 2008. Page 128.
664 * IDENTIFY DEVICE data, word 117-118.
665 * 0xd000 ignores bit 13 (logical:physical > 1)
666 */
667 if ((id[ATA_ID_SECTOR_SIZE] & 0xd000) == 0x5000)
668 return (((id[ATA_ID_LOGICAL_SECTOR_SIZE+1] << 16)
669 + id[ATA_ID_LOGICAL_SECTOR_SIZE]) * sizeof(u16)) ;
670 return ATA_SECT_SIZE;
671}
672
673static inline u8 ata_id_log2_per_physical_sector(const u16 *id)
674{
675 /* T13/1699-D Revision 6a, Sep 6, 2008. Page 128.
676 * IDENTIFY DEVICE data, word 106.
677 * 0xe000 ignores bit 12 (logical sector > 512 bytes)
678 */
679 if ((id[ATA_ID_SECTOR_SIZE] & 0xe000) == 0x6000)
680 return (id[ATA_ID_SECTOR_SIZE] & 0xf);
681 return 0;
18f0f978
CH		 682}
683
295124dc
GG		 684/* Offset of logical sectors relative to physical sectors.
685 *
686 * If device has more than one logical sector per physical sector
687 * (aka 512 byte emulation), vendors might offset the "sector 0" address
688 * so sector 63 is "naturally aligned" - e.g. FAT partition table.
689 * This avoids Read/Mod/Write penalties when using FAT partition table
690 * and updating "well aligned" (FS perspective) physical sectors on every
691 * transaction.
692 */
693static inline u16 ata_id_logical_sector_offset(const u16 *id,
694 u8 log2_per_phys)
18f0f978 695{
295124dc
GG		 696 u16 word_209 = id[209];
697
698 if ((log2_per_phys > 1) && (word_209 & 0xc000) == 0x4000) {
699 u16 first = word_209 & 0x3fff;
700 if (first > 0)
701 return (1 << log2_per_phys) - first;
702 }
703 return 0;
18f0f978
CH		 704}
705
4dce8ba9 706static inline bool ata_id_has_lba48(const u16 *id)
c7293870 707{
37014c64 708 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
4dce8ba9 709 return false;
37014c64 710 if (!ata_id_u64(id, ATA_ID_LBA_CAPACITY_2))
4dce8ba9 711 return false;
37014c64 712 return id[ATA_ID_COMMAND_SET_2] & (1 << 10);
c7293870
AC		 713}
714
4dce8ba9 715static inline bool ata_id_lba48_enabled(const u16 *id)
942dcd85
BZ		 716{
717 if (ata_id_has_lba48(id) == 0)
4dce8ba9 718 return false;
942dcd85 719 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
4dce8ba9 720 return false;
942dcd85
BZ		 721 return id[ATA_ID_CFS_ENABLE_2] & (1 << 10);
722}
723
4dce8ba9 724static inline bool ata_id_hpa_enabled(const u16 *id)
c7293870
AC		 725{
726 /* Yes children, word 83 valid bits cover word 82 data */
37014c64 727 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
4dce8ba9 728 return false;
c7293870 729 /* And 87 covers 85-87 */
37014c64 730 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
4dce8ba9 731 return false;
c7293870 732 /* Check command sets enabled as well as supported */
37014c64 733 if ((id[ATA_ID_CFS_ENABLE_1] & (1 << 10)) == 0)
4dce8ba9 734 return false;
37014c64 735 return id[ATA_ID_COMMAND_SET_1] & (1 << 10);
c7293870
AC		 736}
737
4dce8ba9 738static inline bool ata_id_has_wcache(const u16 *id)
c7293870
AC		 739{
740 /* Yes children, word 83 valid bits cover word 82 data */
37014c64 741 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
4dce8ba9 742 return false;
37014c64 743 return id[ATA_ID_COMMAND_SET_1] & (1 << 5);
c7293870
AC		 744}
745
4dce8ba9 746static inline bool ata_id_has_pm(const u16 *id)
c7293870 747{
37014c64 748 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
4dce8ba9 749 return false;
37014c64 750 return id[ATA_ID_COMMAND_SET_1] & (1 << 3);
c7293870
AC		 751}
752
4dce8ba9 753static inline bool ata_id_rahead_enabled(const u16 *id)
c7293870 754{
37014c64 755 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
4dce8ba9 756 return false;
37014c64 757 return id[ATA_ID_CFS_ENABLE_1] & (1 << 6);
c7293870
AC		 758}
759
4dce8ba9 760static inline bool ata_id_wcache_enabled(const u16 *id)
c7293870 761{
37014c64 762 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
4dce8ba9 763 return false;
37014c64 764 return id[ATA_ID_CFS_ENABLE_1] & (1 << 5);
c7293870
AC		 765}
766
767/**
768 * ata_id_major_version - get ATA level of drive
769 * @id: Identify data
770 *
771 * Caveats:
772 * ATA-1 considers identify optional
773 * ATA-2 introduces mandatory identify
774 * ATA-3 introduces word 80 and accurate reporting
775 *
776 * The practical impact of this is that ata_id_major_version cannot
2dcb407e 777 * reliably report on drives below ATA3.
c7293870
AC		 778 */
779
3d2ca910
TH		 780static inline unsigned int ata_id_major_version(const u16 *id)
781{
782 unsigned int mver;
783
b352e57d
AC		 784 if (id[ATA_ID_MAJOR_VER] == 0xFFFF)
785 return 0;
786
3d2ca910
TH		 787 for (mver = 14; mver >= 1; mver--)
788 if (id[ATA_ID_MAJOR_VER] & (1 << mver))
789 break;
790 return mver;
791}
792
4dce8ba9 793static inline bool ata_id_is_sata(const u16 *id)
32d90911 794{
367d7e78
BZ		 795 /*
796 * See if word 93 is 0 AND drive is at least ATA-5 compatible
797 * verifying that word 80 by casting it to a signed type --
798 * this trick allows us to filter out the reserved values of
799 * 0x0000 and 0xffff along with the earlier ATA revisions...
800 */
801 if (id[ATA_ID_HW_CONFIG] == 0 && (short)id[ATA_ID_MAJOR_VER] >= 0x0020)
4dce8ba9
HR		 802 return true;
803 return false;
32d90911
TH		 804}
805
4dce8ba9 806static inline bool ata_id_has_tpm(const u16 *id)
ae8d4ee7
AC		 807{
808 /* The TPM bits are only valid on ATA8 */
809 if (ata_id_major_version(id) < 8)
4dce8ba9 810 return false;
ae8d4ee7 811 if ((id[48] & 0xC000) != 0x4000)
4dce8ba9 812 return false;
ae8d4ee7
AC		 813 return id[48] & (1 << 0);
814}
815
4dce8ba9 816static inline bool ata_id_has_dword_io(const u16 *id)
ae8d4ee7
AC		 817{
818 /* ATA 8 reuses this flag for "trusted" computing */
819 if (ata_id_major_version(id) > 7)
4dce8ba9
HR		 820 return false;
821 return id[ATA_ID_DWORD_IO] & (1 << 0);
ae8d4ee7
AC		 822}
823
4dce8ba9 824static inline bool ata_id_has_unload(const u16 *id)
ea6ce53c
EO		 825{
826 if (ata_id_major_version(id) >= 7 &&
827 (id[ATA_ID_CFSSE] & 0xC000) == 0x4000 &&
828 id[ATA_ID_CFSSE] & (1 << 13))
4dce8ba9
HR		 829 return true;
830 return false;
ea6ce53c
EO		 831}
832
6b3b9d73
HR		 833static inline bool ata_id_has_wwn(const u16 *id)
834{
835 return (id[ATA_ID_CSF_DEFAULT] & 0xC100) == 0x4100;
836}
837
4bca3286
MP		 838static inline int ata_id_form_factor(const u16 *id)
839{
840 u16 val = id[168];
841
842 if (ata_id_major_version(id) < 7 || val == 0 || val == 0xffff)
843 return 0;
844
845 val &= 0xf;
846
847 if (val > 5)
848 return 0;
849
850 return val;
851}
852
853static inline int ata_id_rotation_rate(const u16 *id)
854{
855 u16 val = id[217];
856
857 if (ata_id_major_version(id) < 7 || val == 0 || val == 0xffff)
858 return 0;
859
860 if (val > 1 && val < 0x401)
861 return 0;
862
863 return val;
864}
865
4dce8ba9 866static inline bool ata_id_has_trim(const u16 *id)
0c659b82
MW		 867{
868 if (ata_id_major_version(id) >= 7 &&
869 (id[ATA_ID_DATA_SET_MGMT] & 1))
4dce8ba9
HR		 870 return true;
871 return false;
0c659b82
MW		 872}
873
4dce8ba9 874static inline bool ata_id_has_zero_after_trim(const u16 *id)
e78db4df
MP		 875{
876 /* DSM supported, deterministic read, and read zero after trim set */
877 if (ata_id_has_trim(id) &&
878 (id[ATA_ID_ADDITIONAL_SUPP] & 0x4020) == 0x4020)
4dce8ba9 879 return true;
e78db4df 880
4dce8ba9 881 return false;
e78db4df
MP		 882}
883
4dce8ba9 884static inline bool ata_id_current_chs_valid(const u16 *id)
8bf62ece 885{
9bec2e38
JG		 886 /* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command
887 has not been issued to the device then the values of
37014c64
BZ		 888 id[ATA_ID_CUR_CYLS] to id[ATA_ID_CUR_SECTORS] are vendor specific. */
889 return (id[ATA_ID_FIELD_VALID] & 1) && /* Current translation valid */
890 id[ATA_ID_CUR_CYLS] && /* cylinders in current translation */
891 id[ATA_ID_CUR_HEADS] && /* heads in current translation */
892 id[ATA_ID_CUR_HEADS] <= 16 &&
893 id[ATA_ID_CUR_SECTORS]; /* sectors in current translation */
8bf62ece
AL		 894}
895
4dce8ba9 896static inline bool ata_id_is_cfa(const u16 *id)
b352e57d 897{
4b7d1c05
BG		 898 if ((id[ATA_ID_CONFIG] == 0x848A) || /* Traditional CF */
899 (id[ATA_ID_CONFIG] == 0x844A)) /* Delkin Devices CF */
4dce8ba9 900 return true;
2999b58b
SS		 901 /*
902 * CF specs don't require specific value in the word 0 anymore and yet
903 * they forbid to report the ATA version in the word 80 and require the
904 * CFA feature set support to be indicated in the word 83 in this case.
905 * Unfortunately, some cards only follow either of this requirements,
906 * and while those that don't indicate CFA feature support need some
907 * sort of quirk list, it seems impractical for the ones that do...
908 */
4dce8ba9 909 return (id[ATA_ID_COMMAND_SET_2] & 0xC004) == 0x4004;
b352e57d
AC		 910}
911
4dce8ba9 912static inline bool ata_id_is_ssd(const u16 *id)
8bff7c6b
JA		 913{
914 return id[ATA_ID_ROT_SPEED] == 0x01;
915}
916
4dce8ba9 917static inline bool ata_id_pio_need_iordy(const u16 *id, const u8 pio)
6dae44f9
BZ		 918{
919 /* CF spec. r4.1 Table 22 says no IORDY on PIO5 and PIO6. */
920 if (pio > 4 && ata_id_is_cfa(id))
4dce8ba9 921 return false;
6dae44f9
BZ		 922 /* For PIO3 and higher it is mandatory. */
923 if (pio > 2)
4dce8ba9 924 return true;
6dae44f9 925 /* Turn it on when possible. */
4dce8ba9 926 return ata_id_has_iordy(id);
6dae44f9
BZ		 927}
928
4dce8ba9 929static inline bool ata_drive_40wire(const u16 *dev_id)
fc085150 930{
32d90911 931 if (ata_id_is_sata(dev_id))
4dce8ba9 932 return false; /* SATA */
37014c64 933 if ((dev_id[ATA_ID_HW_CONFIG] & 0xE000) == 0x6000)
4dce8ba9
HR		 934 return false; /* 80 wire */
935 return true;
fc085150
AC		 936}
937
4dce8ba9 938static inline bool ata_drive_40wire_relaxed(const u16 *dev_id)
6bbfd53d 939{
37014c64 940 if ((dev_id[ATA_ID_HW_CONFIG] & 0x2000) == 0x2000)
4dce8ba9
HR		 941 return false; /* 80 wire */
942 return true;
6bbfd53d
AC		 943}
944
057ace5e 945static inline int atapi_cdb_len(const u16 *dev_id)
1da177e4 946{
37014c64 947 u16 tmp = dev_id[ATA_ID_CONFIG] & 0x3;
1da177e4
LT		 948 switch (tmp) {
949 case 0: return 12;
950 case 1: return 16;
951 default: return -1;
952 }
953}
954
4dce8ba9 955static inline bool atapi_command_packet_set(const u16 *dev_id)
f8d8e579 956{
37014c64 957 return (dev_id[ATA_ID_CONFIG] >> 8) & 0x1f;
f8d8e579
TB		 958}
959
4dce8ba9 960static inline bool atapi_id_dmadir(const u16 *dev_id)
91163006
TH		 961{
962 return ata_id_major_version(dev_id) >= 7 && (dev_id[62] & 0x8000);
963}
964
a02227c9
BZ		 965/*
966 * ata_id_is_lba_capacity_ok() performs a sanity check on
967 * the claimed LBA capacity value for the device.
968 *
969 * Returns 1 if LBA capacity looks sensible, 0 otherwise.
970 *
971 * It is called only once for each device.
972 */
4dce8ba9 973static inline bool ata_id_is_lba_capacity_ok(u16 *id)
a02227c9
BZ		 974{
975 unsigned long lba_sects, chs_sects, head, tail;
976
977 /* No non-LBA info .. so valid! */
978 if (id[ATA_ID_CYLS] == 0)
4dce8ba9 979 return true;
a02227c9
BZ		 980
981 lba_sects = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
982
983 /*
984 * The ATA spec tells large drives to return
985 * C/H/S = 16383/16/63 independent of their size.
986 * Some drives can be jumpered to use 15 heads instead of 16.
987 * Some drives can be jumpered to use 4092 cyls instead of 16383.
988 */
989 if ((id[ATA_ID_CYLS] == 16383 ||
990 (id[ATA_ID_CYLS] == 4092 && id[ATA_ID_CUR_CYLS] == 16383)) &&
991 id[ATA_ID_SECTORS] == 63 &&
992 (id[ATA_ID_HEADS] == 15 || id[ATA_ID_HEADS] == 16) &&
993 (lba_sects >= 16383 * 63 * id[ATA_ID_HEADS]))
4dce8ba9 994 return true;
a02227c9
BZ		 995
996 chs_sects = id[ATA_ID_CYLS] * id[ATA_ID_HEADS] * id[ATA_ID_SECTORS];
997
998 /* perform a rough sanity check on lba_sects: within 10% is OK */
999 if (lba_sects - chs_sects < chs_sects/10)
4dce8ba9 1000 return true;
a02227c9
BZ		 1001
1002 /* some drives have the word order reversed */
1003 head = (lba_sects >> 16) & 0xffff;
1004 tail = lba_sects & 0xffff;
1005 lba_sects = head | (tail << 16);
1006
1007 if (lba_sects - chs_sects < chs_sects/10) {
1008 *(__le32 *)&id[ATA_ID_LBA_CAPACITY] = __cpu_to_le32(lba_sects);
4dce8ba9 1009 return true; /* LBA capacity is (now) good */
a02227c9
BZ		 1010 }
1011
4dce8ba9 1012 return false; /* LBA capacity value may be bad */
a02227c9
BZ		 1013}
1014
93734a23
BZ		 1015static inline void ata_id_to_hd_driveid(u16 *id)
1016{
1017#ifdef __BIG_ENDIAN
1018 /* accessed in struct hd_driveid as 8-bit values */
1019 id[ATA_ID_MAX_MULTSECT] = __cpu_to_le16(id[ATA_ID_MAX_MULTSECT]);
1020 id[ATA_ID_CAPABILITY] = __cpu_to_le16(id[ATA_ID_CAPABILITY]);
1021 id[ATA_ID_OLD_PIO_MODES] = __cpu_to_le16(id[ATA_ID_OLD_PIO_MODES]);
1022 id[ATA_ID_OLD_DMA_MODES] = __cpu_to_le16(id[ATA_ID_OLD_DMA_MODES]);
1023 id[ATA_ID_MULTSECT] = __cpu_to_le16(id[ATA_ID_MULTSECT]);
1024
1025 /* as 32-bit values */
1026 *(u32 *)&id[ATA_ID_LBA_CAPACITY] = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
1027 *(u32 *)&id[ATA_ID_SPG] = ata_id_u32(id, ATA_ID_SPG);
1028
1029 /* as 64-bit value */
1030 *(u64 *)&id[ATA_ID_LBA_CAPACITY_2] =
1031 ata_id_u64(id, ATA_ID_LBA_CAPACITY_2);
1032#endif
1033}
1034
0c659b82 1035/*
d0634c4a
MP		 1036 * Write LBA Range Entries to the buffer that will cover the extent from
1037 * sector to sector + count. This is used for TRIM and for ADD LBA(S)
1038 * TO NV CACHE PINNED SET.
0c659b82 1039 */
d0634c4a
MP		 1040static inline unsigned ata_set_lba_range_entries(void *_buffer,
1041 unsigned buf_size, u64 sector, unsigned long count)
0c659b82
MW		 1042{
1043 __le64 *buffer = _buffer;
d0634c4a 1044 unsigned i = 0, used_bytes;
0c659b82 1045
d0634c4a 1046 while (i < buf_size / 8 ) { /* 6-byte LBA + 2-byte range per entry */
0c659b82
MW		 1047 u64 entry = sector |
1048 ((u64)(count > 0xffff ? 0xffff : count) << 48);
1049 buffer[i++] = __cpu_to_le64(entry);
1050 if (count <= 0xffff)
1051 break;
1052 count -= 0xffff;
1053 sector += 0xffff;
1054 }
1055
d0634c4a
MP		 1056 used_bytes = ALIGN(i * 8, 512);
1057 memset(buffer + i, 0, used_bytes - i * 8);
1058 return used_bytes;
0c659b82
MW		 1059}
1060
07f6f7d0
AL		 1061static inline int is_multi_taskfile(struct ata_taskfile *tf)
1062{
1063 return (tf->command == ATA_CMD_READ_MULTI) ||
1064 (tf->command == ATA_CMD_WRITE_MULTI) ||
1065 (tf->command == ATA_CMD_READ_MULTI_EXT) ||
c2956a3b
AL		 1066 (tf->command == ATA_CMD_WRITE_MULTI_EXT) ||
1067 (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT);
07f6f7d0
AL		 1068}
1069
4dce8ba9 1070static inline bool ata_ok(u8 status)
1da177e4
LT		 1071{
1072 return ((status & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ | ATA_ERR))
1073 == ATA_DRDY);
1074}
1075
4dce8ba9 1076static inline bool lba_28_ok(u64 block, u32 n_block)
c6a33e24 1077{
45c4d015
ML		 1078 /* check the ending block number: must be LESS THAN 0x0fffffff */
1079 return ((block + n_block) < ((1 << 28) - 1)) && (n_block <= 256);
c6a33e24
AL		 1080}
1081
4dce8ba9 1082static inline bool lba_48_ok(u64 block, u32 n_block)
c6a33e24
AL		 1083{
1084 /* check the ending block number */
1085 return ((block + n_block - 1) < ((u64)1 << 48)) && (n_block <= 65536);
1086}
1087
814600ee
TH		 1088#define sata_pmp_gscr_vendor(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] & 0xffff)
1089#define sata_pmp_gscr_devid(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] >> 16)
1090#define sata_pmp_gscr_rev(gscr) (((gscr)[SATA_PMP_GSCR_REV] >> 8) & 0xff)
1091#define sata_pmp_gscr_ports(gscr) ((gscr)[SATA_PMP_GSCR_PORT_INFO] & 0xf)
1092
1da177e4 1093#endif /* __LINUX_ATA_H__ */
Linux kernel - Deliverables
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