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libata: xfer_mask is unsigned long not unsigned int
[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
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,
18d6e9d5 43 ATA_MAX_SECTORS_128 = 128,
8b881b04
JG		 44 ATA_MAX_SECTORS = 256,
45 ATA_MAX_SECTORS_LBA48 = 65535,/* TODO: 65536? */
f8d8e579 46 ATA_MAX_SECTORS_TAPE = 65535,
1da177e4
LT		 47
48 ATA_ID_WORDS = 256,
a0cf733b
TH		 49 ATA_ID_SERNO = 10,
50 ATA_ID_FW_REV = 23,
51 ATA_ID_PROD = 27,
11e29e21
AC		 52 ATA_ID_OLD_PIO_MODES = 51,
53 ATA_ID_FIELD_VALID = 53,
1da177e4 54 ATA_ID_MWDMA_MODES = 63,
11e29e21
AC		 55 ATA_ID_PIO_MODES = 64,
56 ATA_ID_EIDE_DMA_MIN = 65,
57 ATA_ID_EIDE_PIO = 67,
58 ATA_ID_EIDE_PIO_IORDY = 68,
1da177e4 59 ATA_ID_UDMA_MODES = 88,
11e29e21 60 ATA_ID_MAJOR_VER = 80,
1da177e4
LT		 61 ATA_ID_PIO4 = (1 << 1),
62
a0cf733b
TH		 63 ATA_ID_SERNO_LEN = 20,
64 ATA_ID_FW_REV_LEN = 8,
65 ATA_ID_PROD_LEN = 40,
66
1da177e4 67 ATA_PCI_CTL_OFS = 2,
4099d143
BZ		 68
69 ATA_PIO0 = (1 << 0),
70 ATA_PIO1 = ATA_PIO0 | (1 << 1),
71 ATA_PIO2 = ATA_PIO1 | (1 << 2),
72 ATA_PIO3 = ATA_PIO2 | (1 << 3),
73 ATA_PIO4 = ATA_PIO3 | (1 << 4),
74 ATA_PIO5 = ATA_PIO4 | (1 << 5),
75 ATA_PIO6 = ATA_PIO5 | (1 << 6),
76
91a6d4ed
BZ		 77 ATA_SWDMA0 = (1 << 0),
78 ATA_SWDMA1 = ATA_SWDMA0 | (1 << 1),
79 ATA_SWDMA2 = ATA_SWDMA1 | (1 << 2),
80
81 ATA_SWDMA2_ONLY = (1 << 2),
82
83 ATA_MWDMA0 = (1 << 0),
84 ATA_MWDMA1 = ATA_MWDMA0 | (1 << 1),
85 ATA_MWDMA2 = ATA_MWDMA1 | (1 << 2),
86
87 ATA_MWDMA12_ONLY = (1 << 1) | (1 << 2),
88 ATA_MWDMA2_ONLY = (1 << 2),
89
1da177e4
LT		 90 ATA_UDMA0 = (1 << 0),
91 ATA_UDMA1 = ATA_UDMA0 | (1 << 1),
92 ATA_UDMA2 = ATA_UDMA1 | (1 << 2),
93 ATA_UDMA3 = ATA_UDMA2 | (1 << 3),
94 ATA_UDMA4 = ATA_UDMA3 | (1 << 4),
95 ATA_UDMA5 = ATA_UDMA4 | (1 << 5),
96 ATA_UDMA6 = ATA_UDMA5 | (1 << 6),
97 ATA_UDMA7 = ATA_UDMA6 | (1 << 7),
98 /* ATA_UDMA7 is just for completeness... doesn't exist (yet?). */
99
100 ATA_UDMA_MASK_40C = ATA_UDMA2, /* udma0-2 */
101
102 /* DMA-related */
103 ATA_PRD_SZ = 8,
104 ATA_PRD_TBL_SZ = (ATA_MAX_PRD * ATA_PRD_SZ),
105 ATA_PRD_EOT = (1 << 31), /* end-of-table flag */
106
107 ATA_DMA_TABLE_OFS = 4,
108 ATA_DMA_STATUS = 2,
109 ATA_DMA_CMD = 0,
110 ATA_DMA_WR = (1 << 3),
111 ATA_DMA_START = (1 << 0),
112 ATA_DMA_INTR = (1 << 2),
113 ATA_DMA_ERR = (1 << 1),
114 ATA_DMA_ACTIVE = (1 << 0),
115
116 /* bits in ATA command block registers */
117 ATA_HOB = (1 << 7), /* LBA48 selector */
118 ATA_NIEN = (1 << 1), /* disable-irq flag */
119 ATA_LBA = (1 << 6), /* LBA28 selector */
120 ATA_DEV1 = (1 << 4), /* Select Device 1 (slave) */
121 ATA_DEVICE_OBS = (1 << 7) | (1 << 5), /* obs bits in dev reg */
122 ATA_DEVCTL_OBS = (1 << 3), /* obsolete bit in devctl reg */
123 ATA_BUSY = (1 << 7), /* BSY status bit */
124 ATA_DRDY = (1 << 6), /* device ready */
125 ATA_DF = (1 << 5), /* device fault */
126 ATA_DRQ = (1 << 3), /* data request i/o */
127 ATA_ERR = (1 << 0), /* have an error */
128 ATA_SRST = (1 << 2), /* software reset */
9be1e979
TH		 129 ATA_ICRC = (1 << 7), /* interface CRC error */
130 ATA_UNC = (1 << 6), /* uncorrectable media error */
131 ATA_IDNF = (1 << 4), /* ID not found */
1da177e4
LT		 132 ATA_ABORTED = (1 << 2), /* command aborted */
133
134 /* ATA command block registers */
135 ATA_REG_DATA = 0x00,
136 ATA_REG_ERR = 0x01,
137 ATA_REG_NSECT = 0x02,
138 ATA_REG_LBAL = 0x03,
139 ATA_REG_LBAM = 0x04,
140 ATA_REG_LBAH = 0x05,
141 ATA_REG_DEVICE = 0x06,
142 ATA_REG_STATUS = 0x07,
143
144 ATA_REG_FEATURE = ATA_REG_ERR, /* and their aliases */
145 ATA_REG_CMD = ATA_REG_STATUS,
146 ATA_REG_BYTEL = ATA_REG_LBAM,
147 ATA_REG_BYTEH = ATA_REG_LBAH,
148 ATA_REG_DEVSEL = ATA_REG_DEVICE,
149 ATA_REG_IRQ = ATA_REG_NSECT,
150
151 /* ATA device commands */
ab2181cf 152 ATA_CMD_DEV_RESET = 0x08, /* ATAPI device reset */
1da177e4 153 ATA_CMD_CHK_POWER = 0xE5, /* check power mode */
972dcafb
DG		 154 ATA_CMD_STANDBY = 0xE2, /* place in standby power mode */
155 ATA_CMD_IDLE = 0xE3, /* place in idle power mode */
1da177e4
LT		 156 ATA_CMD_EDD = 0x90, /* execute device diagnostic */
157 ATA_CMD_FLUSH = 0xE7,
158 ATA_CMD_FLUSH_EXT = 0xEA,
159 ATA_CMD_ID_ATA = 0xEC,
160 ATA_CMD_ID_ATAPI = 0xA1,
161 ATA_CMD_READ = 0xC8,
162 ATA_CMD_READ_EXT = 0x25,
163 ATA_CMD_WRITE = 0xCA,
164 ATA_CMD_WRITE_EXT = 0x35,
9a3dccc4 165 ATA_CMD_WRITE_FUA_EXT = 0x3D,
88e49034
TH		 166 ATA_CMD_FPDMA_READ = 0x60,
167 ATA_CMD_FPDMA_WRITE = 0x61,
1da177e4
LT		 168 ATA_CMD_PIO_READ = 0x20,
169 ATA_CMD_PIO_READ_EXT = 0x24,
170 ATA_CMD_PIO_WRITE = 0x30,
171 ATA_CMD_PIO_WRITE_EXT = 0x34,
8cbd6df1
AL		 172 ATA_CMD_READ_MULTI = 0xC4,
173 ATA_CMD_READ_MULTI_EXT = 0x29,
174 ATA_CMD_WRITE_MULTI = 0xC5,
175 ATA_CMD_WRITE_MULTI_EXT = 0x39,
9a3dccc4 176 ATA_CMD_WRITE_MULTI_FUA_EXT = 0xCE,
1da177e4 177 ATA_CMD_SET_FEATURES = 0xEF,
2c3d2a46 178 ATA_CMD_SET_MULTI = 0xC6,
1da177e4
LT		 179 ATA_CMD_PACKET = 0xA0,
180 ATA_CMD_VERIFY = 0x40,
181 ATA_CMD_VERIFY_EXT = 0x42,
2dcb407e
JG		 182 ATA_CMD_STANDBYNOW1 = 0xE0,
183 ATA_CMD_IDLEIMMEDIATE = 0xE1,
054a5fba 184 ATA_CMD_SLEEP = 0xE6,
8bf62ece 185 ATA_CMD_INIT_DEV_PARAMS = 0x91,
b6782728
AC		 186 ATA_CMD_READ_NATIVE_MAX = 0xF8,
187 ATA_CMD_READ_NATIVE_MAX_EXT = 0x27,
1e999736
AC		 188 ATA_CMD_SET_MAX = 0xF9,
189 ATA_CMD_SET_MAX_EXT = 0x37,
88e49034 190 ATA_CMD_READ_LOG_EXT = 0x2f,
814600ee
TH		 191 ATA_CMD_PMP_READ = 0xE4,
192 ATA_CMD_PMP_WRITE = 0xE8,
ce2e0abb
TH		 193 ATA_CMD_CONF_OVERLAY = 0xB1,
194 ATA_CMD_SEC_FREEZE_LOCK = 0xF5,
88e49034
TH		 195
196 /* READ_LOG_EXT pages */
197 ATA_LOG_SATA_NCQ = 0x10,
1da177e4 198
5a5dbd18
ML		 199 /* READ/WRITE LONG (obsolete) */
200 ATA_CMD_READ_LONG = 0x22,
201 ATA_CMD_READ_LONG_ONCE = 0x23,
202 ATA_CMD_WRITE_LONG = 0x32,
203 ATA_CMD_WRITE_LONG_ONCE = 0x33,
204
1da177e4
LT		 205 /* SETFEATURES stuff */
206 SETFEATURES_XFER = 0x03,
207 XFER_UDMA_7 = 0x47,
208 XFER_UDMA_6 = 0x46,
209 XFER_UDMA_5 = 0x45,
210 XFER_UDMA_4 = 0x44,
211 XFER_UDMA_3 = 0x43,
212 XFER_UDMA_2 = 0x42,
213 XFER_UDMA_1 = 0x41,
214 XFER_UDMA_0 = 0x40,
b352e57d
AC		 215 XFER_MW_DMA_4 = 0x24, /* CFA only */
216 XFER_MW_DMA_3 = 0x23, /* CFA only */
1da177e4
LT		 217 XFER_MW_DMA_2 = 0x22,
218 XFER_MW_DMA_1 = 0x21,
219 XFER_MW_DMA_0 = 0x20,
b4b52db7
AC		 220 XFER_SW_DMA_2 = 0x12,
221 XFER_SW_DMA_1 = 0x11,
222 XFER_SW_DMA_0 = 0x10,
b352e57d
AC		 223 XFER_PIO_6 = 0x0E, /* CFA only */
224 XFER_PIO_5 = 0x0D, /* CFA only */
1da177e4
LT		 225 XFER_PIO_4 = 0x0C,
226 XFER_PIO_3 = 0x0B,
227 XFER_PIO_2 = 0x0A,
228 XFER_PIO_1 = 0x09,
229 XFER_PIO_0 = 0x08,
1da177e4
LT		 230 XFER_PIO_SLOW = 0x00,
231
3057ac3c 232 SETFEATURES_WC_ON = 0x02, /* Enable write cache */
233 SETFEATURES_WC_OFF = 0x82, /* Disable write cache */
234
169439c2
ML		 235 SETFEATURES_SPINUP = 0x07, /* Spin-up drive */
236
9f45cbd3
KCA		 237 SETFEATURES_SATA_ENABLE = 0x10, /* Enable use of SATA feature */
238 SETFEATURES_SATA_DISABLE = 0x90, /* Disable use of SATA feature */
239
240 /* SETFEATURE Sector counts for SATA features */
241 SATA_AN = 0x05, /* Asynchronous Notification */
ca77329f 242 SATA_DIPM = 0x03, /* Device Initiated Power Management */
9f45cbd3 243
ce2e0abb
TH		 244 /* feature values for SET_MAX */
245 ATA_SET_MAX_ADDR = 0x00,
246 ATA_SET_MAX_PASSWD = 0x01,
247 ATA_SET_MAX_LOCK = 0x02,
248 ATA_SET_MAX_UNLOCK = 0x03,
249 ATA_SET_MAX_FREEZE_LOCK = 0x04,
250
251 /* feature values for DEVICE CONFIGURATION OVERLAY */
252 ATA_DCO_RESTORE = 0xC0,
253 ATA_DCO_FREEZE_LOCK = 0xC1,
254 ATA_DCO_IDENTIFY = 0xC2,
255 ATA_DCO_SET = 0xC3,
256
1da177e4
LT		 257 /* ATAPI stuff */
258 ATAPI_PKT_DMA = (1 << 0),
259 ATAPI_DMADIR = (1 << 2), /* ATAPI data dir:
260 0=to device, 1=to host */
261 ATAPI_CDB_LEN = 16,
262
814600ee
TH		 263 /* PMP stuff */
264 SATA_PMP_MAX_PORTS = 15,
265 SATA_PMP_CTRL_PORT = 15,
266
267 SATA_PMP_GSCR_DWORDS = 128,
268 SATA_PMP_GSCR_PROD_ID = 0,
269 SATA_PMP_GSCR_REV = 1,
270 SATA_PMP_GSCR_PORT_INFO = 2,
271 SATA_PMP_GSCR_ERROR = 32,
272 SATA_PMP_GSCR_ERROR_EN = 33,
273 SATA_PMP_GSCR_FEAT = 64,
274 SATA_PMP_GSCR_FEAT_EN = 96,
275
276 SATA_PMP_PSCR_STATUS = 0,
277 SATA_PMP_PSCR_ERROR = 1,
278 SATA_PMP_PSCR_CONTROL = 2,
279
280 SATA_PMP_FEAT_BIST = (1 << 0),
281 SATA_PMP_FEAT_PMREQ = (1 << 1),
282 SATA_PMP_FEAT_DYNSSC = (1 << 2),
283 SATA_PMP_FEAT_NOTIFY = (1 << 3),
284
1da177e4
LT		 285 /* cable types */
286 ATA_CBL_NONE = 0,
287 ATA_CBL_PATA40 = 1,
288 ATA_CBL_PATA80 = 2,
fc085150
AC		 289 ATA_CBL_PATA40_SHORT = 3, /* 40 wire cable to high UDMA spec */
290 ATA_CBL_PATA_UNK = 4,
291 ATA_CBL_SATA = 5,
1da177e4
LT		 292
293 /* SATA Status and Control Registers */
294 SCR_STATUS = 0,
295 SCR_ERROR = 1,
296 SCR_CONTROL = 2,
297 SCR_ACTIVE = 3,
298 SCR_NOTIFICATION = 4,
299
9be1e979
TH		 300 /* SError bits */
301 SERR_DATA_RECOVERED = (1 << 0), /* recovered data error */
302 SERR_COMM_RECOVERED = (1 << 1), /* recovered comm failure */
303 SERR_DATA = (1 << 8), /* unrecovered data error */
304 SERR_PERSISTENT = (1 << 9), /* persistent data/comm error */
305 SERR_PROTOCOL = (1 << 10), /* protocol violation */
306 SERR_INTERNAL = (1 << 11), /* host internal error */
307 SERR_PHYRDY_CHG = (1 << 16), /* PHY RDY changed */
1333e194
RH		 308 SERR_PHY_INT_ERR = (1 << 17), /* PHY internal error */
309 SERR_COMM_WAKE = (1 << 18), /* Comm wake */
310 SERR_10B_8B_ERR = (1 << 19), /* 10b to 8b decode error */
311 SERR_DISPARITY = (1 << 20), /* Disparity */
312 SERR_CRC = (1 << 21), /* CRC error */
313 SERR_HANDSHAKE = (1 << 22), /* Handshake error */
314 SERR_LINK_SEQ_ERR = (1 << 23), /* Link sequence error */
315 SERR_TRANS_ST_ERROR = (1 << 24), /* Transport state trans. error */
316 SERR_UNRECOG_FIS = (1 << 25), /* Unrecognized FIS */
9be1e979
TH		 317 SERR_DEV_XCHG = (1 << 26), /* device exchanged */
318
1da177e4
LT		 319 /* struct ata_taskfile flags */
320 ATA_TFLAG_LBA48 = (1 << 0), /* enable 48-bit LBA and "HOB" */
321 ATA_TFLAG_ISADDR = (1 << 1), /* enable r/w to nsect/lba regs */
322 ATA_TFLAG_DEVICE = (1 << 2), /* enable r/w to device reg */
323 ATA_TFLAG_WRITE = (1 << 3), /* data dir: host->dev==1 (write) */
8bf62ece 324 ATA_TFLAG_LBA = (1 << 4), /* enable LBA */
9a3dccc4 325 ATA_TFLAG_FUA = (1 << 5), /* enable FUA */
ea9b395f 326 ATA_TFLAG_POLLING = (1 << 6), /* set nIEN to 1 and use polling */
405e66b3
TH		 327
328 /* protocol flags */
329 ATA_PROT_FLAG_PIO = (1 << 0), /* is PIO */
330 ATA_PROT_FLAG_DMA = (1 << 1), /* is DMA */
331 ATA_PROT_FLAG_DATA = ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA,
332 ATA_PROT_FLAG_NCQ = (1 << 2), /* is NCQ */
333 ATA_PROT_FLAG_ATAPI = (1 << 3), /* is ATAPI */
1da177e4
LT		 334};
335
336enum ata_tf_protocols {
337 /* ATA taskfile protocols */
338 ATA_PROT_UNKNOWN, /* unknown/invalid */
339 ATA_PROT_NODATA, /* no data */
1dce589c 340 ATA_PROT_PIO, /* PIO data xfer */
1da177e4 341 ATA_PROT_DMA, /* DMA */
88e49034 342 ATA_PROT_NCQ, /* NCQ */
1da177e4
LT		 343 ATA_PROT_ATAPI, /* packet command, PIO data xfer*/
344 ATA_PROT_ATAPI_NODATA, /* packet command, no data */
345 ATA_PROT_ATAPI_DMA, /* packet command with special DMA sauce */
346};
347
348enum ata_ioctls {
349 ATA_IOC_GET_IO32 = 0x309,
350 ATA_IOC_SET_IO32 = 0x324,
351};
352
353/* core structures */
354
355struct ata_prd {
356 u32 addr;
357 u32 flags_len;
358};
359
360struct ata_taskfile {
361 unsigned long flags; /* ATA_TFLAG_xxx */
362 u8 protocol; /* ATA_PROT_xxx */
363
364 u8 ctl; /* control reg */
365
366 u8 hob_feature; /* additional data */
367 u8 hob_nsect; /* to support LBA48 */
368 u8 hob_lbal;
369 u8 hob_lbam;
370 u8 hob_lbah;
371
372 u8 feature;
373 u8 nsect;
374 u8 lbal;
375 u8 lbam;
376 u8 lbah;
377
378 u8 device;
379
380 u8 command; /* IO operation */
381};
382
405e66b3
TH		 383/*
384 * protocol tests
385 */
386static inline unsigned int ata_prot_flags(u8 prot)
387{
388 switch (prot) {
389 case ATA_PROT_NODATA:
390 return 0;
391 case ATA_PROT_PIO:
392 return ATA_PROT_FLAG_PIO;
393 case ATA_PROT_DMA:
394 return ATA_PROT_FLAG_DMA;
395 case ATA_PROT_NCQ:
396 return ATA_PROT_FLAG_DMA | ATA_PROT_FLAG_NCQ;
397 case ATA_PROT_ATAPI_NODATA:
398 return ATA_PROT_FLAG_ATAPI;
399 case ATA_PROT_ATAPI:
400 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_PIO;
401 case ATA_PROT_ATAPI_DMA:
402 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_DMA;
403 }
404 return 0;
405}
406
407static inline int ata_is_atapi(u8 prot)
408{
409 return ata_prot_flags(prot) & ATA_PROT_FLAG_ATAPI;
410}
411
412static inline int ata_is_nodata(u8 prot)
413{
414 return !(ata_prot_flags(prot) & ATA_PROT_FLAG_DATA);
415}
416
417static inline int ata_is_pio(u8 prot)
418{
419 return ata_prot_flags(prot) & ATA_PROT_FLAG_PIO;
420}
421
422static inline int ata_is_dma(u8 prot)
423{
424 return ata_prot_flags(prot) & ATA_PROT_FLAG_DMA;
425}
426
427static inline int ata_is_ncq(u8 prot)
428{
429 return ata_prot_flags(prot) & ATA_PROT_FLAG_NCQ;
430}
431
432static inline int ata_is_data(u8 prot)
433{
434 return ata_prot_flags(prot) & ATA_PROT_FLAG_DATA;
435}
436
437/*
438 * id tests
439 */
1da177e4 440#define ata_id_is_ata(id) (((id)[0] & (1 << 15)) == 0)
1da177e4
LT		 441#define ata_id_has_lba(id) ((id)[49] & (1 << 9))
442#define ata_id_has_dma(id) ((id)[49] & (1 << 8))
88e49034
TH		 443#define ata_id_has_ncq(id) ((id)[76] & (1 << 8))
444#define ata_id_queue_depth(id) (((id)[75] & 0x1f) + 1)
1da177e4 445#define ata_id_removeable(id) ((id)[0] & (1 << 7))
854c73a2 446#define ata_id_has_atapi_AN(id) \
9f45cbd3
KCA		 447 ( (((id)[76] != 0x0000) && ((id)[76] != 0xffff)) && \
448 ((id)[78] & (1 << 5)) )
49554c19 449#define ata_id_iordy_disable(id) ((id)[49] & (1 << 10))
0bc2a79a 450#define ata_id_has_iordy(id) ((id)[49] & (1 << 11))
1da177e4
LT		 451#define ata_id_u32(id,n) \
452 (((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)]))
453#define ata_id_u64(id,n) \
454 ( ((u64) (id)[(n) + 3] << 48) | \
455 ((u64) (id)[(n) + 2] << 32) | \
456 ((u64) (id)[(n) + 1] << 16) | \
457 ((u64) (id)[(n) + 0]) )
458
312f7da2
AL		 459#define ata_id_cdb_intr(id) (((id)[0] & 0x60) == 0x20)
460
ca77329f
KCA		 461static inline bool ata_id_has_hipm(const u16 *id)
462{
463 u16 val = id[76];
464
465 if (val == 0 || val == 0xffff)
466 return false;
467
468 return val & (1 << 9);
469}
470
471static inline bool ata_id_has_dipm(const u16 *id)
472{
473 u16 val = id[78];
474
475 if (val == 0 || val == 0xffff)
476 return false;
477
478 return val & (1 << 3);
479}
480
ae8d4ee7 481
c7293870
AC		 482static inline int ata_id_has_fua(const u16 *id)
483{
484 if ((id[84] & 0xC000) != 0x4000)
485 return 0;
486 return id[84] & (1 << 6);
487}
488
489static inline int ata_id_has_flush(const u16 *id)
490{
491 if ((id[83] & 0xC000) != 0x4000)
492 return 0;
493 return id[83] & (1 << 12);
494}
495
496static inline int ata_id_has_flush_ext(const u16 *id)
497{
498 if ((id[83] & 0xC000) != 0x4000)
499 return 0;
500 return id[83] & (1 << 13);
501}
502
503static inline int ata_id_has_lba48(const u16 *id)
504{
505 if ((id[83] & 0xC000) != 0x4000)
506 return 0;
17bd9a2f
GU		 507 if (!ata_id_u64(id, 100))
508 return 0;
c7293870
AC		 509 return id[83] & (1 << 10);
510}
511
512static inline int ata_id_hpa_enabled(const u16 *id)
513{
514 /* Yes children, word 83 valid bits cover word 82 data */
515 if ((id[83] & 0xC000) != 0x4000)
516 return 0;
517 /* And 87 covers 85-87 */
518 if ((id[87] & 0xC000) != 0x4000)
519 return 0;
520 /* Check command sets enabled as well as supported */
521 if ((id[85] & ( 1 << 10)) == 0)
522 return 0;
523 return id[82] & (1 << 10);
524}
525
526static inline int ata_id_has_wcache(const u16 *id)
527{
528 /* Yes children, word 83 valid bits cover word 82 data */
529 if ((id[83] & 0xC000) != 0x4000)
530 return 0;
531 return id[82] & (1 << 5);
532}
533
534static inline int ata_id_has_pm(const u16 *id)
535{
536 if ((id[83] & 0xC000) != 0x4000)
537 return 0;
538 return id[82] & (1 << 3);
539}
540
541static inline int ata_id_rahead_enabled(const u16 *id)
542{
543 if ((id[87] & 0xC000) != 0x4000)
544 return 0;
545 return id[85] & (1 << 6);
546}
547
548static inline int ata_id_wcache_enabled(const u16 *id)
549{
550 if ((id[87] & 0xC000) != 0x4000)
551 return 0;
552 return id[85] & (1 << 5);
553}
554
555/**
556 * ata_id_major_version - get ATA level of drive
557 * @id: Identify data
558 *
559 * Caveats:
560 * ATA-1 considers identify optional
561 * ATA-2 introduces mandatory identify
562 * ATA-3 introduces word 80 and accurate reporting
563 *
564 * The practical impact of this is that ata_id_major_version cannot
2dcb407e 565 * reliably report on drives below ATA3.
c7293870
AC		 566 */
567
3d2ca910
TH		 568static inline unsigned int ata_id_major_version(const u16 *id)
569{
570 unsigned int mver;
571
b352e57d
AC		 572 if (id[ATA_ID_MAJOR_VER] == 0xFFFF)
573 return 0;
574
3d2ca910
TH		 575 for (mver = 14; mver >= 1; mver--)
576 if (id[ATA_ID_MAJOR_VER] & (1 << mver))
577 break;
578 return mver;
579}
580
32d90911
TH		 581static inline int ata_id_is_sata(const u16 *id)
582{
583 return ata_id_major_version(id) >= 5 && id[93] == 0;
584}
585
ae8d4ee7
AC		 586static inline int ata_id_has_tpm(const u16 *id)
587{
588 /* The TPM bits are only valid on ATA8 */
589 if (ata_id_major_version(id) < 8)
590 return 0;
591 if ((id[48] & 0xC000) != 0x4000)
592 return 0;
593 return id[48] & (1 << 0);
594}
595
596static inline int ata_id_has_dword_io(const u16 *id)
597{
598 /* ATA 8 reuses this flag for "trusted" computing */
599 if (ata_id_major_version(id) > 7)
600 return 0;
601 if (id[48] & (1 << 0))
602 return 1;
603 return 0;
604}
605
057ace5e 606static inline int ata_id_current_chs_valid(const u16 *id)
8bf62ece 607{
9bec2e38
JG		 608 /* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command
609 has not been issued to the device then the values of
8bf62ece
AL		 610 id[54] to id[56] are vendor specific. */
611 return (id[53] & 0x01) && /* Current translation valid */
612 id[54] && /* cylinders in current translation */
613 id[55] && /* heads in current translation */
614 id[55] <= 16 &&
615 id[56]; /* sectors in current translation */
616}
617
b352e57d
AC		 618static inline int ata_id_is_cfa(const u16 *id)
619{
620 u16 v = id[0];
621 if (v == 0x848A) /* Standard CF */
622 return 1;
623 /* Could be CF hiding as standard ATA */
624 if (ata_id_major_version(id) >= 3 && id[82] != 0xFFFF &&
625 (id[82] & ( 1 << 2)))
626 return 1;
627 return 0;
628}
629
fc085150
AC		 630static inline int ata_drive_40wire(const u16 *dev_id)
631{
32d90911 632 if (ata_id_is_sata(dev_id))
fc085150 633 return 0; /* SATA */
61f216c7 634 if ((dev_id[93] & 0xE000) == 0x6000)
fc085150
AC		 635 return 0; /* 80 wire */
636 return 1;
637}
638
6bbfd53d
AC		 639static inline int ata_drive_40wire_relaxed(const u16 *dev_id)
640{
6bbfd53d
AC		 641 if ((dev_id[93] & 0x2000) == 0x2000)
642 return 0; /* 80 wire */
643 return 1;
644}
645
057ace5e 646static inline int atapi_cdb_len(const u16 *dev_id)
1da177e4
LT		 647{
648 u16 tmp = dev_id[0] & 0x3;
649 switch (tmp) {
650 case 0: return 12;
651 case 1: return 16;
652 default: return -1;
653 }
654}
655
f8d8e579
TB		 656static inline int atapi_command_packet_set(const u16 *dev_id)
657{
658 return (dev_id[0] >> 8) & 0x1f;
659}
660
07f6f7d0
AL		 661static inline int is_multi_taskfile(struct ata_taskfile *tf)
662{
663 return (tf->command == ATA_CMD_READ_MULTI) ||
664 (tf->command == ATA_CMD_WRITE_MULTI) ||
665 (tf->command == ATA_CMD_READ_MULTI_EXT) ||
c2956a3b
AL		 666 (tf->command == ATA_CMD_WRITE_MULTI_EXT) ||
667 (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT);
07f6f7d0
AL		 668}
669
1da177e4
LT		 670static inline int ata_ok(u8 status)
671{
672 return ((status & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ | ATA_ERR))
673 == ATA_DRDY);
674}
675
c6a33e24
AL		 676static inline int lba_28_ok(u64 block, u32 n_block)
677{
678 /* check the ending block number */
679 return ((block + n_block - 1) < ((u64)1 << 28)) && (n_block <= 256);
680}
681
682static inline int lba_48_ok(u64 block, u32 n_block)
683{
684 /* check the ending block number */
685 return ((block + n_block - 1) < ((u64)1 << 48)) && (n_block <= 65536);
686}
687
814600ee
TH		 688#define sata_pmp_gscr_vendor(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] & 0xffff)
689#define sata_pmp_gscr_devid(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] >> 16)
690#define sata_pmp_gscr_rev(gscr) (((gscr)[SATA_PMP_GSCR_REV] >> 8) & 0xff)
691#define sata_pmp_gscr_ports(gscr) ((gscr)[SATA_PMP_GSCR_PORT_INFO] & 0xf)
692
1da177e4 693#endif /* __LINUX_ATA_H__ */
kernel source for telekom puls (alcatel/mediatek)