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libata: cosmetic updates
[GitHub/mt8127/android_kernel_alcatel_ttab.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,
37014c64 78 ATA_ID_QUEUE_DEPTH = 75,
11e29e21 79 ATA_ID_MAJOR_VER = 80,
37014c64
BZ		 80 ATA_ID_COMMAND_SET_1 = 82,
81 ATA_ID_COMMAND_SET_2 = 83,
82 ATA_ID_CFSSE = 84,
83 ATA_ID_CFS_ENABLE_1 = 85,
84 ATA_ID_CFS_ENABLE_2 = 86,
85 ATA_ID_CSF_DEFAULT = 87,
86 ATA_ID_UDMA_MODES = 88,
87 ATA_ID_HW_CONFIG = 93,
88 ATA_ID_SPG = 98,
89 ATA_ID_LBA_CAPACITY_2 = 100,
90 ATA_ID_LAST_LUN = 126,
91 ATA_ID_DLF = 128,
92 ATA_ID_CSFO = 129,
93 ATA_ID_CFA_POWER = 160,
d42ad15b
SS		 94 ATA_ID_CFA_KEY_MGMT = 162,
95 ATA_ID_CFA_MODES = 163,
0c659b82 96 ATA_ID_DATA_SET_MGMT = 169,
8bff7c6b 97 ATA_ID_ROT_SPEED = 217,
1da177e4
LT		 98 ATA_ID_PIO4 = (1 << 1),
99
a0cf733b
TH		 100 ATA_ID_SERNO_LEN = 20,
101 ATA_ID_FW_REV_LEN = 8,
102 ATA_ID_PROD_LEN = 40,
103
1da177e4 104 ATA_PCI_CTL_OFS = 2,
4099d143
BZ		 105
106 ATA_PIO0 = (1 << 0),
107 ATA_PIO1 = ATA_PIO0 | (1 << 1),
108 ATA_PIO2 = ATA_PIO1 | (1 << 2),
109 ATA_PIO3 = ATA_PIO2 | (1 << 3),
110 ATA_PIO4 = ATA_PIO3 | (1 << 4),
111 ATA_PIO5 = ATA_PIO4 | (1 << 5),
112 ATA_PIO6 = ATA_PIO5 | (1 << 6),
113
22ddbd1e
EIB		 114 ATA_PIO4_ONLY = (1 << 4),
115
91a6d4ed
BZ		 116 ATA_SWDMA0 = (1 << 0),
117 ATA_SWDMA1 = ATA_SWDMA0 | (1 << 1),
118 ATA_SWDMA2 = ATA_SWDMA1 | (1 << 2),
119
120 ATA_SWDMA2_ONLY = (1 << 2),
121
122 ATA_MWDMA0 = (1 << 0),
123 ATA_MWDMA1 = ATA_MWDMA0 | (1 << 1),
124 ATA_MWDMA2 = ATA_MWDMA1 | (1 << 2),
22ddbd1e
EIB		 125 ATA_MWDMA3 = ATA_MWDMA2 | (1 << 3),
126 ATA_MWDMA4 = ATA_MWDMA3 | (1 << 4),
91a6d4ed
BZ		 127
128 ATA_MWDMA12_ONLY = (1 << 1) | (1 << 2),
129 ATA_MWDMA2_ONLY = (1 << 2),
130
1da177e4
LT		 131 ATA_UDMA0 = (1 << 0),
132 ATA_UDMA1 = ATA_UDMA0 | (1 << 1),
133 ATA_UDMA2 = ATA_UDMA1 | (1 << 2),
134 ATA_UDMA3 = ATA_UDMA2 | (1 << 3),
135 ATA_UDMA4 = ATA_UDMA3 | (1 << 4),
136 ATA_UDMA5 = ATA_UDMA4 | (1 << 5),
137 ATA_UDMA6 = ATA_UDMA5 | (1 << 6),
138 ATA_UDMA7 = ATA_UDMA6 | (1 << 7),
139 /* ATA_UDMA7 is just for completeness... doesn't exist (yet?). */
140
22ddbd1e
EIB		 141 ATA_UDMA24_ONLY = (1 << 2) | (1 << 4),
142
1da177e4
LT		 143 ATA_UDMA_MASK_40C = ATA_UDMA2, /* udma0-2 */
144
145 /* DMA-related */
146 ATA_PRD_SZ = 8,
147 ATA_PRD_TBL_SZ = (ATA_MAX_PRD * ATA_PRD_SZ),
148 ATA_PRD_EOT = (1 << 31), /* end-of-table flag */
149
150 ATA_DMA_TABLE_OFS = 4,
151 ATA_DMA_STATUS = 2,
152 ATA_DMA_CMD = 0,
153 ATA_DMA_WR = (1 << 3),
154 ATA_DMA_START = (1 << 0),
155 ATA_DMA_INTR = (1 << 2),
156 ATA_DMA_ERR = (1 << 1),
157 ATA_DMA_ACTIVE = (1 << 0),
158
159 /* bits in ATA command block registers */
160 ATA_HOB = (1 << 7), /* LBA48 selector */
161 ATA_NIEN = (1 << 1), /* disable-irq flag */
162 ATA_LBA = (1 << 6), /* LBA28 selector */
163 ATA_DEV1 = (1 << 4), /* Select Device 1 (slave) */
164 ATA_DEVICE_OBS = (1 << 7) | (1 << 5), /* obs bits in dev reg */
165 ATA_DEVCTL_OBS = (1 << 3), /* obsolete bit in devctl reg */
166 ATA_BUSY = (1 << 7), /* BSY status bit */
167 ATA_DRDY = (1 << 6), /* device ready */
168 ATA_DF = (1 << 5), /* device fault */
b5911620 169 ATA_DSC = (1 << 4), /* drive seek complete */
1da177e4 170 ATA_DRQ = (1 << 3), /* data request i/o */
b5911620
BZ		 171 ATA_CORR = (1 << 2), /* corrected data error */
172 ATA_IDX = (1 << 1), /* index */
1da177e4
LT		 173 ATA_ERR = (1 << 0), /* have an error */
174 ATA_SRST = (1 << 2), /* software reset */
9be1e979 175 ATA_ICRC = (1 << 7), /* interface CRC error */
b5911620 176 ATA_BBK = ATA_ICRC, /* pre-EIDE: block marked bad */
9be1e979 177 ATA_UNC = (1 << 6), /* uncorrectable media error */
b5911620 178 ATA_MC = (1 << 5), /* media changed */
9be1e979 179 ATA_IDNF = (1 << 4), /* ID not found */
b5911620 180 ATA_MCR = (1 << 3), /* media change requested */
1da177e4 181 ATA_ABORTED = (1 << 2), /* command aborted */
b5911620
BZ		 182 ATA_TRK0NF = (1 << 1), /* track 0 not found */
183 ATA_AMNF = (1 << 0), /* address mark not found */
184 ATAPI_LFS = 0xF0, /* last failed sense */
185 ATAPI_EOM = ATA_TRK0NF, /* end of media */
186 ATAPI_ILI = ATA_AMNF, /* illegal length indication */
187 ATAPI_IO = (1 << 1),
188 ATAPI_COD = (1 << 0),
1da177e4
LT		 189
190 /* ATA command block registers */
191 ATA_REG_DATA = 0x00,
192 ATA_REG_ERR = 0x01,
193 ATA_REG_NSECT = 0x02,
194 ATA_REG_LBAL = 0x03,
195 ATA_REG_LBAM = 0x04,
196 ATA_REG_LBAH = 0x05,
197 ATA_REG_DEVICE = 0x06,
198 ATA_REG_STATUS = 0x07,
199
200 ATA_REG_FEATURE = ATA_REG_ERR, /* and their aliases */
201 ATA_REG_CMD = ATA_REG_STATUS,
202 ATA_REG_BYTEL = ATA_REG_LBAM,
203 ATA_REG_BYTEH = ATA_REG_LBAH,
204 ATA_REG_DEVSEL = ATA_REG_DEVICE,
205 ATA_REG_IRQ = ATA_REG_NSECT,
206
207 /* ATA device commands */
ab2181cf 208 ATA_CMD_DEV_RESET = 0x08, /* ATAPI device reset */
1da177e4 209 ATA_CMD_CHK_POWER = 0xE5, /* check power mode */
972dcafb
DG		 210 ATA_CMD_STANDBY = 0xE2, /* place in standby power mode */
211 ATA_CMD_IDLE = 0xE3, /* place in idle power mode */
1da177e4 212 ATA_CMD_EDD = 0x90, /* execute device diagnostic */
6521148c
RH		 213 ATA_CMD_DOWNLOAD_MICRO = 0x92,
214 ATA_CMD_NOP = 0x00,
1da177e4
LT		 215 ATA_CMD_FLUSH = 0xE7,
216 ATA_CMD_FLUSH_EXT = 0xEA,
217 ATA_CMD_ID_ATA = 0xEC,
218 ATA_CMD_ID_ATAPI = 0xA1,
6521148c 219 ATA_CMD_SERVICE = 0xA2,
1da177e4
LT		 220 ATA_CMD_READ = 0xC8,
221 ATA_CMD_READ_EXT = 0x25,
6521148c
RH		 222 ATA_CMD_READ_QUEUED = 0x26,
223 ATA_CMD_READ_STREAM_EXT = 0x2B,
224 ATA_CMD_READ_STREAM_DMA_EXT = 0x2A,
1da177e4
LT		 225 ATA_CMD_WRITE = 0xCA,
226 ATA_CMD_WRITE_EXT = 0x35,
6521148c
RH		 227 ATA_CMD_WRITE_QUEUED = 0x36,
228 ATA_CMD_WRITE_STREAM_EXT = 0x3B,
229 ATA_CMD_WRITE_STREAM_DMA_EXT = 0x3A,
9a3dccc4 230 ATA_CMD_WRITE_FUA_EXT = 0x3D,
6521148c 231 ATA_CMD_WRITE_QUEUED_FUA_EXT = 0x3E,
88e49034
TH		 232 ATA_CMD_FPDMA_READ = 0x60,
233 ATA_CMD_FPDMA_WRITE = 0x61,
1da177e4
LT		 234 ATA_CMD_PIO_READ = 0x20,
235 ATA_CMD_PIO_READ_EXT = 0x24,
236 ATA_CMD_PIO_WRITE = 0x30,
237 ATA_CMD_PIO_WRITE_EXT = 0x34,
8cbd6df1
AL		 238 ATA_CMD_READ_MULTI = 0xC4,
239 ATA_CMD_READ_MULTI_EXT = 0x29,
240 ATA_CMD_WRITE_MULTI = 0xC5,
241 ATA_CMD_WRITE_MULTI_EXT = 0x39,
9a3dccc4 242 ATA_CMD_WRITE_MULTI_FUA_EXT = 0xCE,
1da177e4 243 ATA_CMD_SET_FEATURES = 0xEF,
2c3d2a46 244 ATA_CMD_SET_MULTI = 0xC6,
1da177e4
LT		 245 ATA_CMD_PACKET = 0xA0,
246 ATA_CMD_VERIFY = 0x40,
247 ATA_CMD_VERIFY_EXT = 0x42,
6521148c 248 ATA_CMD_WRITE_UNCORR_EXT = 0x45,
2dcb407e
JG		 249 ATA_CMD_STANDBYNOW1 = 0xE0,
250 ATA_CMD_IDLEIMMEDIATE = 0xE1,
054a5fba 251 ATA_CMD_SLEEP = 0xE6,
8bf62ece 252 ATA_CMD_INIT_DEV_PARAMS = 0x91,
b6782728
AC		 253 ATA_CMD_READ_NATIVE_MAX = 0xF8,
254 ATA_CMD_READ_NATIVE_MAX_EXT = 0x27,
1e999736
AC		 255 ATA_CMD_SET_MAX = 0xF9,
256 ATA_CMD_SET_MAX_EXT = 0x37,
6521148c
RH		 257 ATA_CMD_READ_LOG_EXT = 0x2F,
258 ATA_CMD_WRITE_LOG_EXT = 0x3F,
259 ATA_CMD_READ_LOG_DMA_EXT = 0x47,
260 ATA_CMD_WRITE_LOG_DMA_EXT = 0x57,
261 ATA_CMD_TRUSTED_RCV = 0x5C,
262 ATA_CMD_TRUSTED_RCV_DMA = 0x5D,
263 ATA_CMD_TRUSTED_SND = 0x5E,
264 ATA_CMD_TRUSTED_SND_DMA = 0x5F,
814600ee
TH		 265 ATA_CMD_PMP_READ = 0xE4,
266 ATA_CMD_PMP_WRITE = 0xE8,
ce2e0abb 267 ATA_CMD_CONF_OVERLAY = 0xB1,
6521148c
RH		 268 ATA_CMD_SEC_SET_PASS = 0xF1,
269 ATA_CMD_SEC_UNLOCK = 0xF2,
270 ATA_CMD_SEC_ERASE_PREP = 0xF3,
271 ATA_CMD_SEC_ERASE_UNIT = 0xF4,
ce2e0abb 272 ATA_CMD_SEC_FREEZE_LOCK = 0xF5,
6521148c
RH		 273 ATA_CMD_SEC_DISABLE_PASS = 0xF6,
274 ATA_CMD_CONFIG_STREAM = 0x51,
476d9894
BZ		 275 ATA_CMD_SMART = 0xB0,
276 ATA_CMD_MEDIA_LOCK = 0xDE,
277 ATA_CMD_MEDIA_UNLOCK = 0xDF,
0c659b82 278 ATA_CMD_DSM = 0x06,
6521148c
RH		 279 ATA_CMD_CHK_MED_CRD_TYP = 0xD1,
280 ATA_CMD_CFA_REQ_EXT_ERR = 0x03,
281 ATA_CMD_CFA_WRITE_NE = 0x38,
282 ATA_CMD_CFA_TRANS_SECT = 0x87,
283 ATA_CMD_CFA_ERASE = 0xC0,
284 ATA_CMD_CFA_WRITE_MULT_NE = 0xCD,
476d9894
BZ		 285 /* marked obsolete in the ATA/ATAPI-7 spec */
286 ATA_CMD_RESTORE = 0x10,
88e49034
TH		 287
288 /* READ_LOG_EXT pages */
289 ATA_LOG_SATA_NCQ = 0x10,
1da177e4 290
5a5dbd18
ML		 291 /* READ/WRITE LONG (obsolete) */
292 ATA_CMD_READ_LONG = 0x22,
293 ATA_CMD_READ_LONG_ONCE = 0x23,
294 ATA_CMD_WRITE_LONG = 0x32,
295 ATA_CMD_WRITE_LONG_ONCE = 0x33,
296
1da177e4
LT		 297 /* SETFEATURES stuff */
298 SETFEATURES_XFER = 0x03,
299 XFER_UDMA_7 = 0x47,
300 XFER_UDMA_6 = 0x46,
301 XFER_UDMA_5 = 0x45,
302 XFER_UDMA_4 = 0x44,
303 XFER_UDMA_3 = 0x43,
304 XFER_UDMA_2 = 0x42,
305 XFER_UDMA_1 = 0x41,
306 XFER_UDMA_0 = 0x40,
b352e57d
AC		 307 XFER_MW_DMA_4 = 0x24, /* CFA only */
308 XFER_MW_DMA_3 = 0x23, /* CFA only */
1da177e4
LT		 309 XFER_MW_DMA_2 = 0x22,
310 XFER_MW_DMA_1 = 0x21,
311 XFER_MW_DMA_0 = 0x20,
b4b52db7
AC		 312 XFER_SW_DMA_2 = 0x12,
313 XFER_SW_DMA_1 = 0x11,
314 XFER_SW_DMA_0 = 0x10,
b352e57d
AC		 315 XFER_PIO_6 = 0x0E, /* CFA only */
316 XFER_PIO_5 = 0x0D, /* CFA only */
1da177e4
LT		 317 XFER_PIO_4 = 0x0C,
318 XFER_PIO_3 = 0x0B,
319 XFER_PIO_2 = 0x0A,
320 XFER_PIO_1 = 0x09,
321 XFER_PIO_0 = 0x08,
1da177e4
LT		 322 XFER_PIO_SLOW = 0x00,
323
3057ac3c 324 SETFEATURES_WC_ON = 0x02, /* Enable write cache */
325 SETFEATURES_WC_OFF = 0x82, /* Disable write cache */
326
476d9894
BZ		 327 /* Enable/Disable Automatic Acoustic Management */
328 SETFEATURES_AAM_ON = 0x42,
329 SETFEATURES_AAM_OFF = 0xC2,
330
169439c2
ML		 331 SETFEATURES_SPINUP = 0x07, /* Spin-up drive */
332
9f45cbd3
KCA		 333 SETFEATURES_SATA_ENABLE = 0x10, /* Enable use of SATA feature */
334 SETFEATURES_SATA_DISABLE = 0x90, /* Disable use of SATA feature */
335
336 /* SETFEATURE Sector counts for SATA features */
f1bce7f8
TH		 337 SATA_FPDMA_AA = 0x02, /* FPDMA Setup FIS Auto-Activate */
338 SATA_DIPM = 0x03, /* Device Initiated Power Management */
339 SATA_AN = 0x05, /* Asynchronous Notification */
9f45cbd3 340
ce2e0abb
TH		 341 /* feature values for SET_MAX */
342 ATA_SET_MAX_ADDR = 0x00,
343 ATA_SET_MAX_PASSWD = 0x01,
344 ATA_SET_MAX_LOCK = 0x02,
345 ATA_SET_MAX_UNLOCK = 0x03,
346 ATA_SET_MAX_FREEZE_LOCK = 0x04,
347
348 /* feature values for DEVICE CONFIGURATION OVERLAY */
349 ATA_DCO_RESTORE = 0xC0,
350 ATA_DCO_FREEZE_LOCK = 0xC1,
351 ATA_DCO_IDENTIFY = 0xC2,
352 ATA_DCO_SET = 0xC3,
353
476d9894
BZ		 354 /* feature values for SMART */
355 ATA_SMART_ENABLE = 0xD8,
356 ATA_SMART_READ_VALUES = 0xD0,
357 ATA_SMART_READ_THRESHOLDS = 0xD1,
358
0c659b82
MW		 359 /* feature values for Data Set Management */
360 ATA_DSM_TRIM = 0x01,
361
476d9894
BZ		 362 /* password used in LBA Mid / LBA High for executing SMART commands */
363 ATA_SMART_LBAM_PASS = 0x4F,
364 ATA_SMART_LBAH_PASS = 0xC2,
365
1da177e4
LT		 366 /* ATAPI stuff */
367 ATAPI_PKT_DMA = (1 << 0),
368 ATAPI_DMADIR = (1 << 2), /* ATAPI data dir:
369 0=to device, 1=to host */
370 ATAPI_CDB_LEN = 16,
371
814600ee
TH		 372 /* PMP stuff */
373 SATA_PMP_MAX_PORTS = 15,
374 SATA_PMP_CTRL_PORT = 15,
375
376 SATA_PMP_GSCR_DWORDS = 128,
377 SATA_PMP_GSCR_PROD_ID = 0,
378 SATA_PMP_GSCR_REV = 1,
379 SATA_PMP_GSCR_PORT_INFO = 2,
380 SATA_PMP_GSCR_ERROR = 32,
381 SATA_PMP_GSCR_ERROR_EN = 33,
382 SATA_PMP_GSCR_FEAT = 64,
383 SATA_PMP_GSCR_FEAT_EN = 96,
384
385 SATA_PMP_PSCR_STATUS = 0,
386 SATA_PMP_PSCR_ERROR = 1,
387 SATA_PMP_PSCR_CONTROL = 2,
388
389 SATA_PMP_FEAT_BIST = (1 << 0),
390 SATA_PMP_FEAT_PMREQ = (1 << 1),
391 SATA_PMP_FEAT_DYNSSC = (1 << 2),
392 SATA_PMP_FEAT_NOTIFY = (1 << 3),
393
1da177e4
LT		 394 /* cable types */
395 ATA_CBL_NONE = 0,
396 ATA_CBL_PATA40 = 1,
397 ATA_CBL_PATA80 = 2,
c88f90c3
TH		 398 ATA_CBL_PATA40_SHORT = 3, /* 40 wire cable to high UDMA spec */
399 ATA_CBL_PATA_UNK = 4, /* don't know, maybe 80c? */
400 ATA_CBL_PATA_IGN = 5, /* don't know, ignore cable handling */
401 ATA_CBL_SATA = 6,
1da177e4
LT		 402
403 /* SATA Status and Control Registers */
404 SCR_STATUS = 0,
405 SCR_ERROR = 1,
406 SCR_CONTROL = 2,
407 SCR_ACTIVE = 3,
408 SCR_NOTIFICATION = 4,
409
9be1e979
TH		 410 /* SError bits */
411 SERR_DATA_RECOVERED = (1 << 0), /* recovered data error */
412 SERR_COMM_RECOVERED = (1 << 1), /* recovered comm failure */
413 SERR_DATA = (1 << 8), /* unrecovered data error */
414 SERR_PERSISTENT = (1 << 9), /* persistent data/comm error */
415 SERR_PROTOCOL = (1 << 10), /* protocol violation */
416 SERR_INTERNAL = (1 << 11), /* host internal error */
417 SERR_PHYRDY_CHG = (1 << 16), /* PHY RDY changed */
1333e194
RH		 418 SERR_PHY_INT_ERR = (1 << 17), /* PHY internal error */
419 SERR_COMM_WAKE = (1 << 18), /* Comm wake */
420 SERR_10B_8B_ERR = (1 << 19), /* 10b to 8b decode error */
421 SERR_DISPARITY = (1 << 20), /* Disparity */
422 SERR_CRC = (1 << 21), /* CRC error */
423 SERR_HANDSHAKE = (1 << 22), /* Handshake error */
424 SERR_LINK_SEQ_ERR = (1 << 23), /* Link sequence error */
425 SERR_TRANS_ST_ERROR = (1 << 24), /* Transport state trans. error */
426 SERR_UNRECOG_FIS = (1 << 25), /* Unrecognized FIS */
9be1e979
TH		 427 SERR_DEV_XCHG = (1 << 26), /* device exchanged */
428
1da177e4
LT		 429 /* struct ata_taskfile flags */
430 ATA_TFLAG_LBA48 = (1 << 0), /* enable 48-bit LBA and "HOB" */
431 ATA_TFLAG_ISADDR = (1 << 1), /* enable r/w to nsect/lba regs */
432 ATA_TFLAG_DEVICE = (1 << 2), /* enable r/w to device reg */
433 ATA_TFLAG_WRITE = (1 << 3), /* data dir: host->dev==1 (write) */
8bf62ece 434 ATA_TFLAG_LBA = (1 << 4), /* enable LBA */
9a3dccc4 435 ATA_TFLAG_FUA = (1 << 5), /* enable FUA */
ea9b395f 436 ATA_TFLAG_POLLING = (1 << 6), /* set nIEN to 1 and use polling */
405e66b3
TH		 437
438 /* protocol flags */
439 ATA_PROT_FLAG_PIO = (1 << 0), /* is PIO */
440 ATA_PROT_FLAG_DMA = (1 << 1), /* is DMA */
441 ATA_PROT_FLAG_DATA = ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA,
442 ATA_PROT_FLAG_NCQ = (1 << 2), /* is NCQ */
443 ATA_PROT_FLAG_ATAPI = (1 << 3), /* is ATAPI */
1da177e4
LT		 444};
445
446enum ata_tf_protocols {
447 /* ATA taskfile protocols */
448 ATA_PROT_UNKNOWN, /* unknown/invalid */
449 ATA_PROT_NODATA, /* no data */
1dce589c 450 ATA_PROT_PIO, /* PIO data xfer */
1da177e4 451 ATA_PROT_DMA, /* DMA */
88e49034 452 ATA_PROT_NCQ, /* NCQ */
0dc36888
TH		 453 ATAPI_PROT_NODATA, /* packet command, no data */
454 ATAPI_PROT_PIO, /* packet command, PIO data xfer*/
455 ATAPI_PROT_DMA, /* packet command with special DMA sauce */
1da177e4
LT		 456};
457
458enum ata_ioctls {
459 ATA_IOC_GET_IO32 = 0x309,
460 ATA_IOC_SET_IO32 = 0x324,
461};
462
463/* core structures */
464
465struct ata_prd {
4ca4e439
AV		 466 __le32 addr;
467 __le32 flags_len;
1da177e4
LT		 468};
469
470struct ata_taskfile {
471 unsigned long flags; /* ATA_TFLAG_xxx */
472 u8 protocol; /* ATA_PROT_xxx */
473
474 u8 ctl; /* control reg */
475
476 u8 hob_feature; /* additional data */
477 u8 hob_nsect; /* to support LBA48 */
478 u8 hob_lbal;
479 u8 hob_lbam;
480 u8 hob_lbah;
481
482 u8 feature;
483 u8 nsect;
484 u8 lbal;
485 u8 lbam;
486 u8 lbah;
487
488 u8 device;
489
490 u8 command; /* IO operation */
491};
492
405e66b3
TH		 493/*
494 * protocol tests
495 */
496static inline unsigned int ata_prot_flags(u8 prot)
497{
498 switch (prot) {
499 case ATA_PROT_NODATA:
500 return 0;
501 case ATA_PROT_PIO:
502 return ATA_PROT_FLAG_PIO;
503 case ATA_PROT_DMA:
504 return ATA_PROT_FLAG_DMA;
505 case ATA_PROT_NCQ:
506 return ATA_PROT_FLAG_DMA | ATA_PROT_FLAG_NCQ;
0dc36888 507 case ATAPI_PROT_NODATA:
405e66b3 508 return ATA_PROT_FLAG_ATAPI;
0dc36888 509 case ATAPI_PROT_PIO:
405e66b3 510 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_PIO;
0dc36888 511 case ATAPI_PROT_DMA:
405e66b3
TH		 512 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_DMA;
513 }
514 return 0;
515}
516
517static inline int ata_is_atapi(u8 prot)
518{
519 return ata_prot_flags(prot) & ATA_PROT_FLAG_ATAPI;
520}
521
522static inline int ata_is_nodata(u8 prot)
523{
524 return !(ata_prot_flags(prot) & ATA_PROT_FLAG_DATA);
525}
526
527static inline int ata_is_pio(u8 prot)
528{
529 return ata_prot_flags(prot) & ATA_PROT_FLAG_PIO;
530}
531
532static inline int ata_is_dma(u8 prot)
533{
534 return ata_prot_flags(prot) & ATA_PROT_FLAG_DMA;
535}
536
537static inline int ata_is_ncq(u8 prot)
538{
539 return ata_prot_flags(prot) & ATA_PROT_FLAG_NCQ;
540}
541
542static inline int ata_is_data(u8 prot)
543{
544 return ata_prot_flags(prot) & ATA_PROT_FLAG_DATA;
545}
546
547/*
548 * id tests
549 */
37014c64
BZ		 550#define ata_id_is_ata(id) (((id)[ATA_ID_CONFIG] & (1 << 15)) == 0)
551#define ata_id_has_lba(id) ((id)[ATA_ID_CAPABILITY] & (1 << 9))
552#define ata_id_has_dma(id) ((id)[ATA_ID_CAPABILITY] & (1 << 8))
88e49034 553#define ata_id_has_ncq(id) ((id)[76] & (1 << 8))
37014c64
BZ		 554#define ata_id_queue_depth(id) (((id)[ATA_ID_QUEUE_DEPTH] & 0x1f) + 1)
555#define ata_id_removeable(id) ((id)[ATA_ID_CONFIG] & (1 << 7))
854c73a2 556#define ata_id_has_atapi_AN(id) \
9f45cbd3
KCA		 557 ( (((id)[76] != 0x0000) && ((id)[76] != 0xffff)) && \
558 ((id)[78] & (1 << 5)) )
388539f3
SL		 559#define ata_id_has_fpdma_aa(id) \
560 ( (((id)[76] != 0x0000) && ((id)[76] != 0xffff)) && \
561 ((id)[78] & (1 << 2)) )
37014c64
BZ		 562#define ata_id_iordy_disable(id) ((id)[ATA_ID_CAPABILITY] & (1 << 10))
563#define ata_id_has_iordy(id) ((id)[ATA_ID_CAPABILITY] & (1 << 11))
1da177e4
LT		 564#define ata_id_u32(id,n) \
565 (((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)]))
566#define ata_id_u64(id,n) \
567 ( ((u64) (id)[(n) + 3] << 48) | \
568 ((u64) (id)[(n) + 2] << 32) | \
569 ((u64) (id)[(n) + 1] << 16) | \
570 ((u64) (id)[(n) + 0]) )
571
37014c64 572#define ata_id_cdb_intr(id) (((id)[ATA_ID_CONFIG] & 0x60) == 0x20)
312f7da2 573
ca77329f
KCA		 574static inline bool ata_id_has_hipm(const u16 *id)
575{
576 u16 val = id[76];
577
578 if (val == 0 || val == 0xffff)
579 return false;
580
581 return val & (1 << 9);
582}
583
584static inline bool ata_id_has_dipm(const u16 *id)
585{
586 u16 val = id[78];
587
588 if (val == 0 || val == 0xffff)
589 return false;
590
591 return val & (1 << 3);
592}
593
ae8d4ee7 594
c7293870
AC		 595static inline int ata_id_has_fua(const u16 *id)
596{
37014c64 597 if ((id[ATA_ID_CFSSE] & 0xC000) != 0x4000)
c7293870 598 return 0;
37014c64 599 return id[ATA_ID_CFSSE] & (1 << 6);
c7293870
AC		 600}
601
602static inline int ata_id_has_flush(const u16 *id)
603{
37014c64 604 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
c7293870 605 return 0;
37014c64 606 return id[ATA_ID_COMMAND_SET_2] & (1 << 12);
c7293870
AC		 607}
608
4b58f17d
BZ		 609static inline int ata_id_flush_enabled(const u16 *id)
610{
611 if (ata_id_has_flush(id) == 0)
612 return 0;
613 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
614 return 0;
615 return id[ATA_ID_CFS_ENABLE_2] & (1 << 12);
616}
617
c7293870
AC		 618static inline int ata_id_has_flush_ext(const u16 *id)
619{
37014c64 620 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
c7293870 621 return 0;
37014c64 622 return id[ATA_ID_COMMAND_SET_2] & (1 << 13);
c7293870
AC		 623}
624
ff2779b5
BZ		 625static inline int ata_id_flush_ext_enabled(const u16 *id)
626{
627 if (ata_id_has_flush_ext(id) == 0)
628 return 0;
629 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
630 return 0;
631 /*
632 * some Maxtor disks have bit 13 defined incorrectly
633 * so check bit 10 too
634 */
635 return (id[ATA_ID_CFS_ENABLE_2] & 0x2400) == 0x2400;
636}
637
c7293870
AC		 638static inline int ata_id_has_lba48(const u16 *id)
639{
37014c64 640 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
c7293870 641 return 0;
37014c64 642 if (!ata_id_u64(id, ATA_ID_LBA_CAPACITY_2))
17bd9a2f 643 return 0;
37014c64 644 return id[ATA_ID_COMMAND_SET_2] & (1 << 10);
c7293870
AC		 645}
646
942dcd85
BZ		 647static inline int ata_id_lba48_enabled(const u16 *id)
648{
649 if (ata_id_has_lba48(id) == 0)
650 return 0;
651 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
652 return 0;
653 return id[ATA_ID_CFS_ENABLE_2] & (1 << 10);
654}
655
c7293870
AC		 656static inline int ata_id_hpa_enabled(const u16 *id)
657{
658 /* Yes children, word 83 valid bits cover word 82 data */
37014c64 659 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
c7293870
AC		 660 return 0;
661 /* And 87 covers 85-87 */
37014c64 662 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
c7293870
AC		 663 return 0;
664 /* Check command sets enabled as well as supported */
37014c64 665 if ((id[ATA_ID_CFS_ENABLE_1] & (1 << 10)) == 0)
c7293870 666 return 0;
37014c64 667 return id[ATA_ID_COMMAND_SET_1] & (1 << 10);
c7293870
AC		 668}
669
670static inline int ata_id_has_wcache(const u16 *id)
671{
672 /* Yes children, word 83 valid bits cover word 82 data */
37014c64 673 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
c7293870 674 return 0;
37014c64 675 return id[ATA_ID_COMMAND_SET_1] & (1 << 5);
c7293870
AC		 676}
677
678static inline int ata_id_has_pm(const u16 *id)
679{
37014c64 680 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
c7293870 681 return 0;
37014c64 682 return id[ATA_ID_COMMAND_SET_1] & (1 << 3);
c7293870
AC		 683}
684
685static inline int ata_id_rahead_enabled(const u16 *id)
686{
37014c64 687 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
c7293870 688 return 0;
37014c64 689 return id[ATA_ID_CFS_ENABLE_1] & (1 << 6);
c7293870
AC		 690}
691
692static inline int ata_id_wcache_enabled(const u16 *id)
693{
37014c64 694 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
c7293870 695 return 0;
37014c64 696 return id[ATA_ID_CFS_ENABLE_1] & (1 << 5);
c7293870
AC		 697}
698
699/**
700 * ata_id_major_version - get ATA level of drive
701 * @id: Identify data
702 *
703 * Caveats:
704 * ATA-1 considers identify optional
705 * ATA-2 introduces mandatory identify
706 * ATA-3 introduces word 80 and accurate reporting
707 *
708 * The practical impact of this is that ata_id_major_version cannot
2dcb407e 709 * reliably report on drives below ATA3.
c7293870
AC		 710 */
711
3d2ca910
TH		 712static inline unsigned int ata_id_major_version(const u16 *id)
713{
714 unsigned int mver;
715
b352e57d
AC		 716 if (id[ATA_ID_MAJOR_VER] == 0xFFFF)
717 return 0;
718
3d2ca910
TH		 719 for (mver = 14; mver >= 1; mver--)
720 if (id[ATA_ID_MAJOR_VER] & (1 << mver))
721 break;
722 return mver;
723}
724
32d90911
TH		 725static inline int ata_id_is_sata(const u16 *id)
726{
367d7e78
BZ		 727 /*
728 * See if word 93 is 0 AND drive is at least ATA-5 compatible
729 * verifying that word 80 by casting it to a signed type --
730 * this trick allows us to filter out the reserved values of
731 * 0x0000 and 0xffff along with the earlier ATA revisions...
732 */
733 if (id[ATA_ID_HW_CONFIG] == 0 && (short)id[ATA_ID_MAJOR_VER] >= 0x0020)
734 return 1;
735 return 0;
32d90911
TH		 736}
737
ae8d4ee7
AC		 738static inline int ata_id_has_tpm(const u16 *id)
739{
740 /* The TPM bits are only valid on ATA8 */
741 if (ata_id_major_version(id) < 8)
742 return 0;
743 if ((id[48] & 0xC000) != 0x4000)
744 return 0;
745 return id[48] & (1 << 0);
746}
747
748static inline int ata_id_has_dword_io(const u16 *id)
749{
750 /* ATA 8 reuses this flag for "trusted" computing */
751 if (ata_id_major_version(id) > 7)
752 return 0;
37014c64 753 if (id[ATA_ID_DWORD_IO] & (1 << 0))
ae8d4ee7
AC		 754 return 1;
755 return 0;
756}
757
ea6ce53c
EO		 758static inline int ata_id_has_unload(const u16 *id)
759{
760 if (ata_id_major_version(id) >= 7 &&
761 (id[ATA_ID_CFSSE] & 0xC000) == 0x4000 &&
762 id[ATA_ID_CFSSE] & (1 << 13))
763 return 1;
764 return 0;
765}
766
4bca3286
MP		 767static inline int ata_id_form_factor(const u16 *id)
768{
769 u16 val = id[168];
770
771 if (ata_id_major_version(id) < 7 || val == 0 || val == 0xffff)
772 return 0;
773
774 val &= 0xf;
775
776 if (val > 5)
777 return 0;
778
779 return val;
780}
781
782static inline int ata_id_rotation_rate(const u16 *id)
783{
784 u16 val = id[217];
785
786 if (ata_id_major_version(id) < 7 || val == 0 || val == 0xffff)
787 return 0;
788
789 if (val > 1 && val < 0x401)
790 return 0;
791
792 return val;
793}
794
0c659b82
MW		 795static inline int ata_id_has_trim(const u16 *id)
796{
797 if (ata_id_major_version(id) >= 7 &&
798 (id[ATA_ID_DATA_SET_MGMT] & 1))
799 return 1;
800 return 0;
801}
802
057ace5e 803static inline int ata_id_current_chs_valid(const u16 *id)
8bf62ece 804{
9bec2e38
JG		 805 /* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command
806 has not been issued to the device then the values of
37014c64
BZ		 807 id[ATA_ID_CUR_CYLS] to id[ATA_ID_CUR_SECTORS] are vendor specific. */
808 return (id[ATA_ID_FIELD_VALID] & 1) && /* Current translation valid */
809 id[ATA_ID_CUR_CYLS] && /* cylinders in current translation */
810 id[ATA_ID_CUR_HEADS] && /* heads in current translation */
811 id[ATA_ID_CUR_HEADS] <= 16 &&
812 id[ATA_ID_CUR_SECTORS]; /* sectors in current translation */
8bf62ece
AL		 813}
814
b352e57d
AC		 815static inline int ata_id_is_cfa(const u16 *id)
816{
2999b58b 817 if (id[ATA_ID_CONFIG] == 0x848A) /* Traditional CF */
b352e57d 818 return 1;
2999b58b
SS		 819 /*
820 * CF specs don't require specific value in the word 0 anymore and yet
821 * they forbid to report the ATA version in the word 80 and require the
822 * CFA feature set support to be indicated in the word 83 in this case.
823 * Unfortunately, some cards only follow either of this requirements,
824 * and while those that don't indicate CFA feature support need some
825 * sort of quirk list, it seems impractical for the ones that do...
826 */
827 if ((id[ATA_ID_COMMAND_SET_2] & 0xC004) == 0x4004)
b352e57d
AC		 828 return 1;
829 return 0;
830}
831
8bff7c6b
JA		 832static inline int ata_id_is_ssd(const u16 *id)
833{
834 return id[ATA_ID_ROT_SPEED] == 0x01;
835}
836
6dae44f9
BZ		 837static inline int ata_id_pio_need_iordy(const u16 *id, const u8 pio)
838{
839 /* CF spec. r4.1 Table 22 says no IORDY on PIO5 and PIO6. */
840 if (pio > 4 && ata_id_is_cfa(id))
841 return 0;
842 /* For PIO3 and higher it is mandatory. */
843 if (pio > 2)
844 return 1;
845 /* Turn it on when possible. */
846 if (ata_id_has_iordy(id))
847 return 1;
848 return 0;
849}
850
fc085150
AC		 851static inline int ata_drive_40wire(const u16 *dev_id)
852{
32d90911 853 if (ata_id_is_sata(dev_id))
fc085150 854 return 0; /* SATA */
37014c64 855 if ((dev_id[ATA_ID_HW_CONFIG] & 0xE000) == 0x6000)
fc085150
AC		 856 return 0; /* 80 wire */
857 return 1;
858}
859
6bbfd53d
AC		 860static inline int ata_drive_40wire_relaxed(const u16 *dev_id)
861{
37014c64 862 if ((dev_id[ATA_ID_HW_CONFIG] & 0x2000) == 0x2000)
6bbfd53d
AC		 863 return 0; /* 80 wire */
864 return 1;
865}
866
057ace5e 867static inline int atapi_cdb_len(const u16 *dev_id)
1da177e4 868{
37014c64 869 u16 tmp = dev_id[ATA_ID_CONFIG] & 0x3;
1da177e4
LT		 870 switch (tmp) {
871 case 0: return 12;
872 case 1: return 16;
873 default: return -1;
874 }
875}
876
f8d8e579
TB		 877static inline int atapi_command_packet_set(const u16 *dev_id)
878{
37014c64 879 return (dev_id[ATA_ID_CONFIG] >> 8) & 0x1f;
f8d8e579
TB		 880}
881
91163006
TH		 882static inline int atapi_id_dmadir(const u16 *dev_id)
883{
884 return ata_id_major_version(dev_id) >= 7 && (dev_id[62] & 0x8000);
885}
886
a02227c9
BZ		 887/*
888 * ata_id_is_lba_capacity_ok() performs a sanity check on
889 * the claimed LBA capacity value for the device.
890 *
891 * Returns 1 if LBA capacity looks sensible, 0 otherwise.
892 *
893 * It is called only once for each device.
894 */
895static inline int ata_id_is_lba_capacity_ok(u16 *id)
896{
897 unsigned long lba_sects, chs_sects, head, tail;
898
899 /* No non-LBA info .. so valid! */
900 if (id[ATA_ID_CYLS] == 0)
901 return 1;
902
903 lba_sects = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
904
905 /*
906 * The ATA spec tells large drives to return
907 * C/H/S = 16383/16/63 independent of their size.
908 * Some drives can be jumpered to use 15 heads instead of 16.
909 * Some drives can be jumpered to use 4092 cyls instead of 16383.
910 */
911 if ((id[ATA_ID_CYLS] == 16383 ||
912 (id[ATA_ID_CYLS] == 4092 && id[ATA_ID_CUR_CYLS] == 16383)) &&
913 id[ATA_ID_SECTORS] == 63 &&
914 (id[ATA_ID_HEADS] == 15 || id[ATA_ID_HEADS] == 16) &&
915 (lba_sects >= 16383 * 63 * id[ATA_ID_HEADS]))
916 return 1;
917
918 chs_sects = id[ATA_ID_CYLS] * id[ATA_ID_HEADS] * id[ATA_ID_SECTORS];
919
920 /* perform a rough sanity check on lba_sects: within 10% is OK */
921 if (lba_sects - chs_sects < chs_sects/10)
922 return 1;
923
924 /* some drives have the word order reversed */
925 head = (lba_sects >> 16) & 0xffff;
926 tail = lba_sects & 0xffff;
927 lba_sects = head | (tail << 16);
928
929 if (lba_sects - chs_sects < chs_sects/10) {
930 *(__le32 *)&id[ATA_ID_LBA_CAPACITY] = __cpu_to_le32(lba_sects);
931 return 1; /* LBA capacity is (now) good */
932 }
933
934 return 0; /* LBA capacity value may be bad */
935}
936
93734a23
BZ		 937static inline void ata_id_to_hd_driveid(u16 *id)
938{
939#ifdef __BIG_ENDIAN
940 /* accessed in struct hd_driveid as 8-bit values */
941 id[ATA_ID_MAX_MULTSECT] = __cpu_to_le16(id[ATA_ID_MAX_MULTSECT]);
942 id[ATA_ID_CAPABILITY] = __cpu_to_le16(id[ATA_ID_CAPABILITY]);
943 id[ATA_ID_OLD_PIO_MODES] = __cpu_to_le16(id[ATA_ID_OLD_PIO_MODES]);
944 id[ATA_ID_OLD_DMA_MODES] = __cpu_to_le16(id[ATA_ID_OLD_DMA_MODES]);
945 id[ATA_ID_MULTSECT] = __cpu_to_le16(id[ATA_ID_MULTSECT]);
946
947 /* as 32-bit values */
948 *(u32 *)&id[ATA_ID_LBA_CAPACITY] = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
949 *(u32 *)&id[ATA_ID_SPG] = ata_id_u32(id, ATA_ID_SPG);
950
951 /* as 64-bit value */
952 *(u64 *)&id[ATA_ID_LBA_CAPACITY_2] =
953 ata_id_u64(id, ATA_ID_LBA_CAPACITY_2);
954#endif
955}
956
0c659b82
MW		 957/*
958 * Write up to 'max' LBA Range Entries to the buffer that will cover the
959 * extent from sector to sector + count. This is used for TRIM and for
960 * ADD LBA(S) TO NV CACHE PINNED SET.
961 */
962static inline unsigned ata_set_lba_range_entries(void *_buffer, unsigned max,
963 u64 sector, unsigned long count)
964{
965 __le64 *buffer = _buffer;
966 unsigned i = 0;
967
968 while (i < max) {
969 u64 entry = sector |
970 ((u64)(count > 0xffff ? 0xffff : count) << 48);
971 buffer[i++] = __cpu_to_le64(entry);
972 if (count <= 0xffff)
973 break;
974 count -= 0xffff;
975 sector += 0xffff;
976 }
977
978 max = ALIGN(i * 8, 512);
979 memset(buffer + i, 0, max - i * 8);
980 return max;
981}
982
07f6f7d0
AL		 983static inline int is_multi_taskfile(struct ata_taskfile *tf)
984{
985 return (tf->command == ATA_CMD_READ_MULTI) ||
986 (tf->command == ATA_CMD_WRITE_MULTI) ||
987 (tf->command == ATA_CMD_READ_MULTI_EXT) ||
c2956a3b
AL		 988 (tf->command == ATA_CMD_WRITE_MULTI_EXT) ||
989 (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT);
07f6f7d0
AL		 990}
991
1da177e4
LT		 992static inline int ata_ok(u8 status)
993{
994 return ((status & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ | ATA_ERR))
995 == ATA_DRDY);
996}
997
c6a33e24
AL		 998static inline int lba_28_ok(u64 block, u32 n_block)
999{
1000 /* check the ending block number */
97b697a1 1001 return ((block + n_block) < ((u64)1 << 28)) && (n_block <= 256);
c6a33e24
AL		 1002}
1003
1004static inline int lba_48_ok(u64 block, u32 n_block)
1005{
1006 /* check the ending block number */
1007 return ((block + n_block - 1) < ((u64)1 << 48)) && (n_block <= 65536);
1008}
1009
814600ee
TH		 1010#define sata_pmp_gscr_vendor(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] & 0xffff)
1011#define sata_pmp_gscr_devid(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] >> 16)
1012#define sata_pmp_gscr_rev(gscr) (((gscr)[SATA_PMP_GSCR_REV] >> 8) & 0xff)
1013#define sata_pmp_gscr_ports(gscr) ((gscr)[SATA_PMP_GSCR_PORT_INFO] & 0xf)
1014
1da177e4 1015#endif /* __LINUX_ATA_H__ */
kernel source for telekom puls (alcatel/mediatek)