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tracehook_notify_death: use task_detached() helper
[linux-2.6/mini2440.git] / include / linux / ata.h
blob6617c9f8f2cada78c148907a261c8f4dde5e568e
1
2 /*
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 *
27 */
28
29 #ifndef __LINUX_ATA_H__
30 #define __LINUX_ATA_H__
31
32 #include <linux/types.h>
33 #include <asm/byteorder.h>
34
35 /* defines only for the constants which don't work well as enums */
36 #define ATA_DMA_BOUNDARY 0xffffUL
37 #define ATA_DMA_MASK 0xffffffffULL
38
39 enum {
40 /* various global constants */
41 ATA_MAX_DEVICES = 2, /* per bus/port */
42 ATA_MAX_PRD = 256, /* we could make these 256/256 */
43 ATA_SECT_SIZE = 512,
44 ATA_MAX_SECTORS_128 = 128,
45 ATA_MAX_SECTORS = 256,
46 ATA_MAX_SECTORS_LBA48 = 65535,/* TODO: 65536? */
47 ATA_MAX_SECTORS_TAPE = 65535,
48
49 ATA_ID_WORDS = 256,
50 ATA_ID_CONFIG = 0,
51 ATA_ID_CYLS = 1,
52 ATA_ID_HEADS = 3,
53 ATA_ID_SECTORS = 6,
54 ATA_ID_SERNO = 10,
55 ATA_ID_BUF_SIZE = 21,
56 ATA_ID_FW_REV = 23,
57 ATA_ID_PROD = 27,
58 ATA_ID_MAX_MULTSECT = 47,
59 ATA_ID_DWORD_IO = 48,
60 ATA_ID_CAPABILITY = 49,
61 ATA_ID_OLD_PIO_MODES = 51,
62 ATA_ID_OLD_DMA_MODES = 52,
63 ATA_ID_FIELD_VALID = 53,
64 ATA_ID_CUR_CYLS = 54,
65 ATA_ID_CUR_HEADS = 55,
66 ATA_ID_CUR_SECTORS = 56,
67 ATA_ID_MULTSECT = 59,
68 ATA_ID_LBA_CAPACITY = 60,
69 ATA_ID_SWDMA_MODES = 62,
70 ATA_ID_MWDMA_MODES = 63,
71 ATA_ID_PIO_MODES = 64,
72 ATA_ID_EIDE_DMA_MIN = 65,
73 ATA_ID_EIDE_DMA_TIME = 66,
74 ATA_ID_EIDE_PIO = 67,
75 ATA_ID_EIDE_PIO_IORDY = 68,
76 ATA_ID_QUEUE_DEPTH = 75,
77 ATA_ID_MAJOR_VER = 80,
78 ATA_ID_COMMAND_SET_1 = 82,
79 ATA_ID_COMMAND_SET_2 = 83,
80 ATA_ID_CFSSE = 84,
81 ATA_ID_CFS_ENABLE_1 = 85,
82 ATA_ID_CFS_ENABLE_2 = 86,
83 ATA_ID_CSF_DEFAULT = 87,
84 ATA_ID_UDMA_MODES = 88,
85 ATA_ID_HW_CONFIG = 93,
86 ATA_ID_SPG = 98,
87 ATA_ID_LBA_CAPACITY_2 = 100,
88 ATA_ID_LAST_LUN = 126,
89 ATA_ID_DLF = 128,
90 ATA_ID_CSFO = 129,
91 ATA_ID_CFA_POWER = 160,
92 ATA_ID_CFA_KEY_MGMT = 162,
93 ATA_ID_CFA_MODES = 163,
94 ATA_ID_ROT_SPEED = 217,
95 ATA_ID_PIO4 = (1 << 1),
96
97 ATA_ID_SERNO_LEN = 20,
98 ATA_ID_FW_REV_LEN = 8,
99 ATA_ID_PROD_LEN = 40,
100
101 ATA_PCI_CTL_OFS = 2,
102
103 ATA_PIO0 = (1 << 0),
104 ATA_PIO1 = ATA_PIO0 | (1 << 1),
105 ATA_PIO2 = ATA_PIO1 | (1 << 2),
106 ATA_PIO3 = ATA_PIO2 | (1 << 3),
107 ATA_PIO4 = ATA_PIO3 | (1 << 4),
108 ATA_PIO5 = ATA_PIO4 | (1 << 5),
109 ATA_PIO6 = ATA_PIO5 | (1 << 6),
110
111 ATA_PIO4_ONLY = (1 << 4),
112
113 ATA_SWDMA0 = (1 << 0),
114 ATA_SWDMA1 = ATA_SWDMA0 | (1 << 1),
115 ATA_SWDMA2 = ATA_SWDMA1 | (1 << 2),
116
117 ATA_SWDMA2_ONLY = (1 << 2),
118
119 ATA_MWDMA0 = (1 << 0),
120 ATA_MWDMA1 = ATA_MWDMA0 | (1 << 1),
121 ATA_MWDMA2 = ATA_MWDMA1 | (1 << 2),
122 ATA_MWDMA3 = ATA_MWDMA2 | (1 << 3),
123 ATA_MWDMA4 = ATA_MWDMA3 | (1 << 4),
124
125 ATA_MWDMA12_ONLY = (1 << 1) | (1 << 2),
126 ATA_MWDMA2_ONLY = (1 << 2),
127
128 ATA_UDMA0 = (1 << 0),
129 ATA_UDMA1 = ATA_UDMA0 | (1 << 1),
130 ATA_UDMA2 = ATA_UDMA1 | (1 << 2),
131 ATA_UDMA3 = ATA_UDMA2 | (1 << 3),
132 ATA_UDMA4 = ATA_UDMA3 | (1 << 4),
133 ATA_UDMA5 = ATA_UDMA4 | (1 << 5),
134 ATA_UDMA6 = ATA_UDMA5 | (1 << 6),
135 ATA_UDMA7 = ATA_UDMA6 | (1 << 7),
136 /* ATA_UDMA7 is just for completeness... doesn't exist (yet?). */
137
138 ATA_UDMA24_ONLY = (1 << 2) | (1 << 4),
139
140 ATA_UDMA_MASK_40C = ATA_UDMA2, /* udma0-2 */
141
142 /* DMA-related */
143 ATA_PRD_SZ = 8,
144 ATA_PRD_TBL_SZ = (ATA_MAX_PRD * ATA_PRD_SZ),
145 ATA_PRD_EOT = (1 << 31), /* end-of-table flag */
146
147 ATA_DMA_TABLE_OFS = 4,
148 ATA_DMA_STATUS = 2,
149 ATA_DMA_CMD = 0,
150 ATA_DMA_WR = (1 << 3),
151 ATA_DMA_START = (1 << 0),
152 ATA_DMA_INTR = (1 << 2),
153 ATA_DMA_ERR = (1 << 1),
154 ATA_DMA_ACTIVE = (1 << 0),
155
156 /* bits in ATA command block registers */
157 ATA_HOB = (1 << 7), /* LBA48 selector */
158 ATA_NIEN = (1 << 1), /* disable-irq flag */
159 ATA_LBA = (1 << 6), /* LBA28 selector */
160 ATA_DEV1 = (1 << 4), /* Select Device 1 (slave) */
161 ATA_DEVICE_OBS = (1 << 7) | (1 << 5), /* obs bits in dev reg */
162 ATA_DEVCTL_OBS = (1 << 3), /* obsolete bit in devctl reg */
163 ATA_BUSY = (1 << 7), /* BSY status bit */
164 ATA_DRDY = (1 << 6), /* device ready */
165 ATA_DF = (1 << 5), /* device fault */
166 ATA_DSC = (1 << 4), /* drive seek complete */
167 ATA_DRQ = (1 << 3), /* data request i/o */
168 ATA_CORR = (1 << 2), /* corrected data error */
169 ATA_IDX = (1 << 1), /* index */
170 ATA_ERR = (1 << 0), /* have an error */
171 ATA_SRST = (1 << 2), /* software reset */
172 ATA_ICRC = (1 << 7), /* interface CRC error */
173 ATA_BBK = ATA_ICRC, /* pre-EIDE: block marked bad */
174 ATA_UNC = (1 << 6), /* uncorrectable media error */
175 ATA_MC = (1 << 5), /* media changed */
176 ATA_IDNF = (1 << 4), /* ID not found */
177 ATA_MCR = (1 << 3), /* media change requested */
178 ATA_ABORTED = (1 << 2), /* command aborted */
179 ATA_TRK0NF = (1 << 1), /* track 0 not found */
180 ATA_AMNF = (1 << 0), /* address mark not found */
181 ATAPI_LFS = 0xF0, /* last failed sense */
182 ATAPI_EOM = ATA_TRK0NF, /* end of media */
183 ATAPI_ILI = ATA_AMNF, /* illegal length indication */
184 ATAPI_IO = (1 << 1),
185 ATAPI_COD = (1 << 0),
186
187 /* ATA command block registers */
188 ATA_REG_DATA = 0x00,
189 ATA_REG_ERR = 0x01,
190 ATA_REG_NSECT = 0x02,
191 ATA_REG_LBAL = 0x03,
192 ATA_REG_LBAM = 0x04,
193 ATA_REG_LBAH = 0x05,
194 ATA_REG_DEVICE = 0x06,
195 ATA_REG_STATUS = 0x07,
196
197 ATA_REG_FEATURE = ATA_REG_ERR, /* and their aliases */
198 ATA_REG_CMD = ATA_REG_STATUS,
199 ATA_REG_BYTEL = ATA_REG_LBAM,
200 ATA_REG_BYTEH = ATA_REG_LBAH,
201 ATA_REG_DEVSEL = ATA_REG_DEVICE,
202 ATA_REG_IRQ = ATA_REG_NSECT,
203
204 /* ATA device commands */
205 ATA_CMD_DEV_RESET = 0x08, /* ATAPI device reset */
206 ATA_CMD_CHK_POWER = 0xE5, /* check power mode */
207 ATA_CMD_STANDBY = 0xE2, /* place in standby power mode */
208 ATA_CMD_IDLE = 0xE3, /* place in idle power mode */
209 ATA_CMD_EDD = 0x90, /* execute device diagnostic */
210 ATA_CMD_FLUSH = 0xE7,
211 ATA_CMD_FLUSH_EXT = 0xEA,
212 ATA_CMD_ID_ATA = 0xEC,
213 ATA_CMD_ID_ATAPI = 0xA1,
214 ATA_CMD_READ = 0xC8,
215 ATA_CMD_READ_EXT = 0x25,
216 ATA_CMD_WRITE = 0xCA,
217 ATA_CMD_WRITE_EXT = 0x35,
218 ATA_CMD_WRITE_FUA_EXT = 0x3D,
219 ATA_CMD_FPDMA_READ = 0x60,
220 ATA_CMD_FPDMA_WRITE = 0x61,
221 ATA_CMD_PIO_READ = 0x20,
222 ATA_CMD_PIO_READ_EXT = 0x24,
223 ATA_CMD_PIO_WRITE = 0x30,
224 ATA_CMD_PIO_WRITE_EXT = 0x34,
225 ATA_CMD_READ_MULTI = 0xC4,
226 ATA_CMD_READ_MULTI_EXT = 0x29,
227 ATA_CMD_WRITE_MULTI = 0xC5,
228 ATA_CMD_WRITE_MULTI_EXT = 0x39,
229 ATA_CMD_WRITE_MULTI_FUA_EXT = 0xCE,
230 ATA_CMD_SET_FEATURES = 0xEF,
231 ATA_CMD_SET_MULTI = 0xC6,
232 ATA_CMD_PACKET = 0xA0,
233 ATA_CMD_VERIFY = 0x40,
234 ATA_CMD_VERIFY_EXT = 0x42,
235 ATA_CMD_STANDBYNOW1 = 0xE0,
236 ATA_CMD_IDLEIMMEDIATE = 0xE1,
237 ATA_CMD_SLEEP = 0xE6,
238 ATA_CMD_INIT_DEV_PARAMS = 0x91,
239 ATA_CMD_READ_NATIVE_MAX = 0xF8,
240 ATA_CMD_READ_NATIVE_MAX_EXT = 0x27,
241 ATA_CMD_SET_MAX = 0xF9,
242 ATA_CMD_SET_MAX_EXT = 0x37,
243 ATA_CMD_READ_LOG_EXT = 0x2f,
244 ATA_CMD_PMP_READ = 0xE4,
245 ATA_CMD_PMP_WRITE = 0xE8,
246 ATA_CMD_CONF_OVERLAY = 0xB1,
247 ATA_CMD_SEC_FREEZE_LOCK = 0xF5,
248 ATA_CMD_SMART = 0xB0,
249 ATA_CMD_MEDIA_LOCK = 0xDE,
250 ATA_CMD_MEDIA_UNLOCK = 0xDF,
251 /* marked obsolete in the ATA/ATAPI-7 spec */
252 ATA_CMD_RESTORE = 0x10,
253
254 /* READ_LOG_EXT pages */
255 ATA_LOG_SATA_NCQ = 0x10,
256
257 /* READ/WRITE LONG (obsolete) */
258 ATA_CMD_READ_LONG = 0x22,
259 ATA_CMD_READ_LONG_ONCE = 0x23,
260 ATA_CMD_WRITE_LONG = 0x32,
261 ATA_CMD_WRITE_LONG_ONCE = 0x33,
262
263 /* SETFEATURES stuff */
264 SETFEATURES_XFER = 0x03,
265 XFER_UDMA_7 = 0x47,
266 XFER_UDMA_6 = 0x46,
267 XFER_UDMA_5 = 0x45,
268 XFER_UDMA_4 = 0x44,
269 XFER_UDMA_3 = 0x43,
270 XFER_UDMA_2 = 0x42,
271 XFER_UDMA_1 = 0x41,
272 XFER_UDMA_0 = 0x40,
273 XFER_MW_DMA_4 = 0x24, /* CFA only */
274 XFER_MW_DMA_3 = 0x23, /* CFA only */
275 XFER_MW_DMA_2 = 0x22,
276 XFER_MW_DMA_1 = 0x21,
277 XFER_MW_DMA_0 = 0x20,
278 XFER_SW_DMA_2 = 0x12,
279 XFER_SW_DMA_1 = 0x11,
280 XFER_SW_DMA_0 = 0x10,
281 XFER_PIO_6 = 0x0E, /* CFA only */
282 XFER_PIO_5 = 0x0D, /* CFA only */
283 XFER_PIO_4 = 0x0C,
284 XFER_PIO_3 = 0x0B,
285 XFER_PIO_2 = 0x0A,
286 XFER_PIO_1 = 0x09,
287 XFER_PIO_0 = 0x08,
288 XFER_PIO_SLOW = 0x00,
289
290 SETFEATURES_WC_ON = 0x02, /* Enable write cache */
291 SETFEATURES_WC_OFF = 0x82, /* Disable write cache */
292
293 /* Enable/Disable Automatic Acoustic Management */
294 SETFEATURES_AAM_ON = 0x42,
295 SETFEATURES_AAM_OFF = 0xC2,
296
297 SETFEATURES_SPINUP = 0x07, /* Spin-up drive */
298
299 SETFEATURES_SATA_ENABLE = 0x10, /* Enable use of SATA feature */
300 SETFEATURES_SATA_DISABLE = 0x90, /* Disable use of SATA feature */
301
302 /* SETFEATURE Sector counts for SATA features */
303 SATA_AN = 0x05, /* Asynchronous Notification */
304 SATA_DIPM = 0x03, /* Device Initiated Power Management */
305
306 /* feature values for SET_MAX */
307 ATA_SET_MAX_ADDR = 0x00,
308 ATA_SET_MAX_PASSWD = 0x01,
309 ATA_SET_MAX_LOCK = 0x02,
310 ATA_SET_MAX_UNLOCK = 0x03,
311 ATA_SET_MAX_FREEZE_LOCK = 0x04,
312
313 /* feature values for DEVICE CONFIGURATION OVERLAY */
314 ATA_DCO_RESTORE = 0xC0,
315 ATA_DCO_FREEZE_LOCK = 0xC1,
316 ATA_DCO_IDENTIFY = 0xC2,
317 ATA_DCO_SET = 0xC3,
318
319 /* feature values for SMART */
320 ATA_SMART_ENABLE = 0xD8,
321 ATA_SMART_READ_VALUES = 0xD0,
322 ATA_SMART_READ_THRESHOLDS = 0xD1,
323
324 /* password used in LBA Mid / LBA High for executing SMART commands */
325 ATA_SMART_LBAM_PASS = 0x4F,
326 ATA_SMART_LBAH_PASS = 0xC2,
327
328 /* ATAPI stuff */
329 ATAPI_PKT_DMA = (1 << 0),
330 ATAPI_DMADIR = (1 << 2), /* ATAPI data dir:
331 0=to device, 1=to host */
332 ATAPI_CDB_LEN = 16,
333
334 /* PMP stuff */
335 SATA_PMP_MAX_PORTS = 15,
336 SATA_PMP_CTRL_PORT = 15,
337
338 SATA_PMP_GSCR_DWORDS = 128,
339 SATA_PMP_GSCR_PROD_ID = 0,
340 SATA_PMP_GSCR_REV = 1,
341 SATA_PMP_GSCR_PORT_INFO = 2,
342 SATA_PMP_GSCR_ERROR = 32,
343 SATA_PMP_GSCR_ERROR_EN = 33,
344 SATA_PMP_GSCR_FEAT = 64,
345 SATA_PMP_GSCR_FEAT_EN = 96,
346
347 SATA_PMP_PSCR_STATUS = 0,
348 SATA_PMP_PSCR_ERROR = 1,
349 SATA_PMP_PSCR_CONTROL = 2,
350
351 SATA_PMP_FEAT_BIST = (1 << 0),
352 SATA_PMP_FEAT_PMREQ = (1 << 1),
353 SATA_PMP_FEAT_DYNSSC = (1 << 2),
354 SATA_PMP_FEAT_NOTIFY = (1 << 3),
355
356 /* cable types */
357 ATA_CBL_NONE = 0,
358 ATA_CBL_PATA40 = 1,
359 ATA_CBL_PATA80 = 2,
360 ATA_CBL_PATA40_SHORT = 3, /* 40 wire cable to high UDMA spec */
361 ATA_CBL_PATA_UNK = 4, /* don't know, maybe 80c? */
362 ATA_CBL_PATA_IGN = 5, /* don't know, ignore cable handling */
363 ATA_CBL_SATA = 6,
364
365 /* SATA Status and Control Registers */
366 SCR_STATUS = 0,
367 SCR_ERROR = 1,
368 SCR_CONTROL = 2,
369 SCR_ACTIVE = 3,
370 SCR_NOTIFICATION = 4,
371
372 /* SError bits */
373 SERR_DATA_RECOVERED = (1 << 0), /* recovered data error */
374 SERR_COMM_RECOVERED = (1 << 1), /* recovered comm failure */
375 SERR_DATA = (1 << 8), /* unrecovered data error */
376 SERR_PERSISTENT = (1 << 9), /* persistent data/comm error */
377 SERR_PROTOCOL = (1 << 10), /* protocol violation */
378 SERR_INTERNAL = (1 << 11), /* host internal error */
379 SERR_PHYRDY_CHG = (1 << 16), /* PHY RDY changed */
380 SERR_PHY_INT_ERR = (1 << 17), /* PHY internal error */
381 SERR_COMM_WAKE = (1 << 18), /* Comm wake */
382 SERR_10B_8B_ERR = (1 << 19), /* 10b to 8b decode error */
383 SERR_DISPARITY = (1 << 20), /* Disparity */
384 SERR_CRC = (1 << 21), /* CRC error */
385 SERR_HANDSHAKE = (1 << 22), /* Handshake error */
386 SERR_LINK_SEQ_ERR = (1 << 23), /* Link sequence error */
387 SERR_TRANS_ST_ERROR = (1 << 24), /* Transport state trans. error */
388 SERR_UNRECOG_FIS = (1 << 25), /* Unrecognized FIS */
389 SERR_DEV_XCHG = (1 << 26), /* device exchanged */
390
391 /* struct ata_taskfile flags */
392 ATA_TFLAG_LBA48 = (1 << 0), /* enable 48-bit LBA and "HOB" */
393 ATA_TFLAG_ISADDR = (1 << 1), /* enable r/w to nsect/lba regs */
394 ATA_TFLAG_DEVICE = (1 << 2), /* enable r/w to device reg */
395 ATA_TFLAG_WRITE = (1 << 3), /* data dir: host->dev==1 (write) */
396 ATA_TFLAG_LBA = (1 << 4), /* enable LBA */
397 ATA_TFLAG_FUA = (1 << 5), /* enable FUA */
398 ATA_TFLAG_POLLING = (1 << 6), /* set nIEN to 1 and use polling */
399
400 /* protocol flags */
401 ATA_PROT_FLAG_PIO = (1 << 0), /* is PIO */
402 ATA_PROT_FLAG_DMA = (1 << 1), /* is DMA */
403 ATA_PROT_FLAG_DATA = ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA,
404 ATA_PROT_FLAG_NCQ = (1 << 2), /* is NCQ */
405 ATA_PROT_FLAG_ATAPI = (1 << 3), /* is ATAPI */
406 };
407
408 enum ata_tf_protocols {
409 /* ATA taskfile protocols */
410 ATA_PROT_UNKNOWN, /* unknown/invalid */
411 ATA_PROT_NODATA, /* no data */
412 ATA_PROT_PIO, /* PIO data xfer */
413 ATA_PROT_DMA, /* DMA */
414 ATA_PROT_NCQ, /* NCQ */
415 ATAPI_PROT_NODATA, /* packet command, no data */
416 ATAPI_PROT_PIO, /* packet command, PIO data xfer*/
417 ATAPI_PROT_DMA, /* packet command with special DMA sauce */
418 };
419
420 enum ata_ioctls {
421 ATA_IOC_GET_IO32 = 0x309,
422 ATA_IOC_SET_IO32 = 0x324,
423 };
424
425 /* core structures */
426
427 struct ata_prd {
428 __le32 addr;
429 __le32 flags_len;
430 };
431
432 struct ata_taskfile {
433 unsigned long flags; /* ATA_TFLAG_xxx */
434 u8 protocol; /* ATA_PROT_xxx */
435
436 u8 ctl; /* control reg */
437
438 u8 hob_feature; /* additional data */
439 u8 hob_nsect; /* to support LBA48 */
440 u8 hob_lbal;
441 u8 hob_lbam;
442 u8 hob_lbah;
443
444 u8 feature;
445 u8 nsect;
446 u8 lbal;
447 u8 lbam;
448 u8 lbah;
449
450 u8 device;
451
452 u8 command; /* IO operation */
453 };
454
455 /*
456 * protocol tests
457 */
458 static inline unsigned int ata_prot_flags(u8 prot)
459 {
460 switch (prot) {
461 case ATA_PROT_NODATA:
462 return 0;
463 case ATA_PROT_PIO:
464 return ATA_PROT_FLAG_PIO;
465 case ATA_PROT_DMA:
466 return ATA_PROT_FLAG_DMA;
467 case ATA_PROT_NCQ:
468 return ATA_PROT_FLAG_DMA | ATA_PROT_FLAG_NCQ;
469 case ATAPI_PROT_NODATA:
470 return ATA_PROT_FLAG_ATAPI;
471 case ATAPI_PROT_PIO:
472 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_PIO;
473 case ATAPI_PROT_DMA:
474 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_DMA;
475 }
476 return 0;
477 }
478
479 static inline int ata_is_atapi(u8 prot)
480 {
481 return ata_prot_flags(prot) & ATA_PROT_FLAG_ATAPI;
482 }
483
484 static inline int ata_is_nodata(u8 prot)
485 {
486 return !(ata_prot_flags(prot) & ATA_PROT_FLAG_DATA);
487 }
488
489 static inline int ata_is_pio(u8 prot)
490 {
491 return ata_prot_flags(prot) & ATA_PROT_FLAG_PIO;
492 }
493
494 static inline int ata_is_dma(u8 prot)
495 {
496 return ata_prot_flags(prot) & ATA_PROT_FLAG_DMA;
497 }
498
499 static inline int ata_is_ncq(u8 prot)
500 {
501 return ata_prot_flags(prot) & ATA_PROT_FLAG_NCQ;
502 }
503
504 static inline int ata_is_data(u8 prot)
505 {
506 return ata_prot_flags(prot) & ATA_PROT_FLAG_DATA;
507 }
508
509 /*
510 * id tests
511 */
512 #define ata_id_is_ata(id) (((id)[ATA_ID_CONFIG] & (1 << 15)) == 0)
513 #define ata_id_has_lba(id) ((id)[ATA_ID_CAPABILITY] & (1 << 9))
514 #define ata_id_has_dma(id) ((id)[ATA_ID_CAPABILITY] & (1 << 8))
515 #define ata_id_has_ncq(id) ((id)[76] & (1 << 8))
516 #define ata_id_queue_depth(id) (((id)[ATA_ID_QUEUE_DEPTH] & 0x1f) + 1)
517 #define ata_id_removeable(id) ((id)[ATA_ID_CONFIG] & (1 << 7))
518 #define ata_id_has_atapi_AN(id) \
519 ( (((id)[76] != 0x0000) && ((id)[76] != 0xffff)) && \
520 ((id)[78] & (1 << 5)) )
521 #define ata_id_iordy_disable(id) ((id)[ATA_ID_CAPABILITY] & (1 << 10))
522 #define ata_id_has_iordy(id) ((id)[ATA_ID_CAPABILITY] & (1 << 11))
523 #define ata_id_u32(id,n) \
524 (((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)]))
525 #define ata_id_u64(id,n) \
526 ( ((u64) (id)[(n) + 3] << 48) | \
527 ((u64) (id)[(n) + 2] << 32) | \
528 ((u64) (id)[(n) + 1] << 16) | \
529 ((u64) (id)[(n) + 0]) )
530
531 #define ata_id_cdb_intr(id) (((id)[ATA_ID_CONFIG] & 0x60) == 0x20)
532
533 static inline bool ata_id_has_hipm(const u16 *id)
534 {
535 u16 val = id[76];
536
537 if (val == 0 || val == 0xffff)
538 return false;
539
540 return val & (1 << 9);
541 }
542
543 static inline bool ata_id_has_dipm(const u16 *id)
544 {
545 u16 val = id[78];
546
547 if (val == 0 || val == 0xffff)
548 return false;
549
550 return val & (1 << 3);
551 }
552
553
554 static inline int ata_id_has_fua(const u16 *id)
555 {
556 if ((id[ATA_ID_CFSSE] & 0xC000) != 0x4000)
557 return 0;
558 return id[ATA_ID_CFSSE] & (1 << 6);
559 }
560
561 static inline int ata_id_has_flush(const u16 *id)
562 {
563 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
564 return 0;
565 return id[ATA_ID_COMMAND_SET_2] & (1 << 12);
566 }
567
568 static inline int ata_id_flush_enabled(const u16 *id)
569 {
570 if (ata_id_has_flush(id) == 0)
571 return 0;
572 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
573 return 0;
574 return id[ATA_ID_CFS_ENABLE_2] & (1 << 12);
575 }
576
577 static inline int ata_id_has_flush_ext(const u16 *id)
578 {
579 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
580 return 0;
581 return id[ATA_ID_COMMAND_SET_2] & (1 << 13);
582 }
583
584 static inline int ata_id_flush_ext_enabled(const u16 *id)
585 {
586 if (ata_id_has_flush_ext(id) == 0)
587 return 0;
588 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
589 return 0;
590 /*
591 * some Maxtor disks have bit 13 defined incorrectly
592 * so check bit 10 too
593 */
594 return (id[ATA_ID_CFS_ENABLE_2] & 0x2400) == 0x2400;
595 }
596
597 static inline int ata_id_has_lba48(const u16 *id)
598 {
599 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
600 return 0;
601 if (!ata_id_u64(id, ATA_ID_LBA_CAPACITY_2))
602 return 0;
603 return id[ATA_ID_COMMAND_SET_2] & (1 << 10);
604 }
605
606 static inline int ata_id_lba48_enabled(const u16 *id)
607 {
608 if (ata_id_has_lba48(id) == 0)
609 return 0;
610 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
611 return 0;
612 return id[ATA_ID_CFS_ENABLE_2] & (1 << 10);
613 }
614
615 static inline int ata_id_hpa_enabled(const u16 *id)
616 {
617 /* Yes children, word 83 valid bits cover word 82 data */
618 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
619 return 0;
620 /* And 87 covers 85-87 */
621 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
622 return 0;
623 /* Check command sets enabled as well as supported */
624 if ((id[ATA_ID_CFS_ENABLE_1] & (1 << 10)) == 0)
625 return 0;
626 return id[ATA_ID_COMMAND_SET_1] & (1 << 10);
627 }
628
629 static inline int ata_id_has_wcache(const u16 *id)
630 {
631 /* Yes children, word 83 valid bits cover word 82 data */
632 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
633 return 0;
634 return id[ATA_ID_COMMAND_SET_1] & (1 << 5);
635 }
636
637 static inline int ata_id_has_pm(const u16 *id)
638 {
639 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
640 return 0;
641 return id[ATA_ID_COMMAND_SET_1] & (1 << 3);
642 }
643
644 static inline int ata_id_rahead_enabled(const u16 *id)
645 {
646 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
647 return 0;
648 return id[ATA_ID_CFS_ENABLE_1] & (1 << 6);
649 }
650
651 static inline int ata_id_wcache_enabled(const u16 *id)
652 {
653 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
654 return 0;
655 return id[ATA_ID_CFS_ENABLE_1] & (1 << 5);
656 }
657
658 /**
659 * ata_id_major_version - get ATA level of drive
660 * @id: Identify data
661 *
662 * Caveats:
663 * ATA-1 considers identify optional
664 * ATA-2 introduces mandatory identify
665 * ATA-3 introduces word 80 and accurate reporting
666 *
667 * The practical impact of this is that ata_id_major_version cannot
668 * reliably report on drives below ATA3.
669 */
670
671 static inline unsigned int ata_id_major_version(const u16 *id)
672 {
673 unsigned int mver;
674
675 if (id[ATA_ID_MAJOR_VER] == 0xFFFF)
676 return 0;
677
678 for (mver = 14; mver >= 1; mver--)
679 if (id[ATA_ID_MAJOR_VER] & (1 << mver))
680 break;
681 return mver;
682 }
683
684 static inline int ata_id_is_sata(const u16 *id)
685 {
686 /*
687 * See if word 93 is 0 AND drive is at least ATA-5 compatible
688 * verifying that word 80 by casting it to a signed type --
689 * this trick allows us to filter out the reserved values of
690 * 0x0000 and 0xffff along with the earlier ATA revisions...
691 */
692 if (id[ATA_ID_HW_CONFIG] == 0 && (short)id[ATA_ID_MAJOR_VER] >= 0x0020)
693 return 1;
694 return 0;
695 }
696
697 static inline int ata_id_has_tpm(const u16 *id)
698 {
699 /* The TPM bits are only valid on ATA8 */
700 if (ata_id_major_version(id) < 8)
701 return 0;
702 if ((id[48] & 0xC000) != 0x4000)
703 return 0;
704 return id[48] & (1 << 0);
705 }
706
707 static inline int ata_id_has_dword_io(const u16 *id)
708 {
709 /* ATA 8 reuses this flag for "trusted" computing */
710 if (ata_id_major_version(id) > 7)
711 return 0;
712 if (id[ATA_ID_DWORD_IO] & (1 << 0))
713 return 1;
714 return 0;
715 }
716
717 static inline int ata_id_has_unload(const u16 *id)
718 {
719 if (ata_id_major_version(id) >= 7 &&
720 (id[ATA_ID_CFSSE] & 0xC000) == 0x4000 &&
721 id[ATA_ID_CFSSE] & (1 << 13))
722 return 1;
723 return 0;
724 }
725
726 static inline int ata_id_current_chs_valid(const u16 *id)
727 {
728 /* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command
729 has not been issued to the device then the values of
730 id[ATA_ID_CUR_CYLS] to id[ATA_ID_CUR_SECTORS] are vendor specific. */
731 return (id[ATA_ID_FIELD_VALID] & 1) && /* Current translation valid */
732 id[ATA_ID_CUR_CYLS] && /* cylinders in current translation */
733 id[ATA_ID_CUR_HEADS] && /* heads in current translation */
734 id[ATA_ID_CUR_HEADS] <= 16 &&
735 id[ATA_ID_CUR_SECTORS]; /* sectors in current translation */
736 }
737
738 static inline int ata_id_is_cfa(const u16 *id)
739 {
740 if (id[ATA_ID_CONFIG] == 0x848A) /* Traditional CF */
741 return 1;
742 /*
743 * CF specs don't require specific value in the word 0 anymore and yet
744 * they forbid to report the ATA version in the word 80 and require the
745 * CFA feature set support to be indicated in the word 83 in this case.
746 * Unfortunately, some cards only follow either of this requirements,
747 * and while those that don't indicate CFA feature support need some
748 * sort of quirk list, it seems impractical for the ones that do...
749 */
750 if ((id[ATA_ID_COMMAND_SET_2] & 0xC004) == 0x4004)
751 return 1;
752 return 0;
753 }
754
755 static inline int ata_id_is_ssd(const u16 *id)
756 {
757 return id[ATA_ID_ROT_SPEED] == 0x01;
758 }
759
760 static inline int ata_drive_40wire(const u16 *dev_id)
761 {
762 if (ata_id_is_sata(dev_id))
763 return 0; /* SATA */
764 if ((dev_id[ATA_ID_HW_CONFIG] & 0xE000) == 0x6000)
765 return 0; /* 80 wire */
766 return 1;
767 }
768
769 static inline int ata_drive_40wire_relaxed(const u16 *dev_id)
770 {
771 if ((dev_id[ATA_ID_HW_CONFIG] & 0x2000) == 0x2000)
772 return 0; /* 80 wire */
773 return 1;
774 }
775
776 static inline int atapi_cdb_len(const u16 *dev_id)
777 {
778 u16 tmp = dev_id[ATA_ID_CONFIG] & 0x3;
779 switch (tmp) {
780 case 0: return 12;
781 case 1: return 16;
782 default: return -1;
783 }
784 }
785
786 static inline int atapi_command_packet_set(const u16 *dev_id)
787 {
788 return (dev_id[ATA_ID_CONFIG] >> 8) & 0x1f;
789 }
790
791 static inline int atapi_id_dmadir(const u16 *dev_id)
792 {
793 return ata_id_major_version(dev_id) >= 7 && (dev_id[62] & 0x8000);
794 }
795
796 /*
797 * ata_id_is_lba_capacity_ok() performs a sanity check on
798 * the claimed LBA capacity value for the device.
799 *
800 * Returns 1 if LBA capacity looks sensible, 0 otherwise.
801 *
802 * It is called only once for each device.
803 */
804 static inline int ata_id_is_lba_capacity_ok(u16 *id)
805 {
806 unsigned long lba_sects, chs_sects, head, tail;
807
808 /* No non-LBA info .. so valid! */
809 if (id[ATA_ID_CYLS] == 0)
810 return 1;
811
812 lba_sects = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
813
814 /*
815 * The ATA spec tells large drives to return
816 * C/H/S = 16383/16/63 independent of their size.
817 * Some drives can be jumpered to use 15 heads instead of 16.
818 * Some drives can be jumpered to use 4092 cyls instead of 16383.
819 */
820 if ((id[ATA_ID_CYLS] == 16383 ||
821 (id[ATA_ID_CYLS] == 4092 && id[ATA_ID_CUR_CYLS] == 16383)) &&
822 id[ATA_ID_SECTORS] == 63 &&
823 (id[ATA_ID_HEADS] == 15 || id[ATA_ID_HEADS] == 16) &&
824 (lba_sects >= 16383 * 63 * id[ATA_ID_HEADS]))
825 return 1;
826
827 chs_sects = id[ATA_ID_CYLS] * id[ATA_ID_HEADS] * id[ATA_ID_SECTORS];
828
829 /* perform a rough sanity check on lba_sects: within 10% is OK */
830 if (lba_sects - chs_sects < chs_sects/10)
831 return 1;
832
833 /* some drives have the word order reversed */
834 head = (lba_sects >> 16) & 0xffff;
835 tail = lba_sects & 0xffff;
836 lba_sects = head | (tail << 16);
837
838 if (lba_sects - chs_sects < chs_sects/10) {
839 *(__le32 *)&id[ATA_ID_LBA_CAPACITY] = __cpu_to_le32(lba_sects);
840 return 1; /* LBA capacity is (now) good */
841 }
842
843 return 0; /* LBA capacity value may be bad */
844 }
845
846 static inline void ata_id_to_hd_driveid(u16 *id)
847 {
848 #ifdef __BIG_ENDIAN
849 /* accessed in struct hd_driveid as 8-bit values */
850 id[ATA_ID_MAX_MULTSECT] = __cpu_to_le16(id[ATA_ID_MAX_MULTSECT]);
851 id[ATA_ID_CAPABILITY] = __cpu_to_le16(id[ATA_ID_CAPABILITY]);
852 id[ATA_ID_OLD_PIO_MODES] = __cpu_to_le16(id[ATA_ID_OLD_PIO_MODES]);
853 id[ATA_ID_OLD_DMA_MODES] = __cpu_to_le16(id[ATA_ID_OLD_DMA_MODES]);
854 id[ATA_ID_MULTSECT] = __cpu_to_le16(id[ATA_ID_MULTSECT]);
855
856 /* as 32-bit values */
857 *(u32 *)&id[ATA_ID_LBA_CAPACITY] = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
858 *(u32 *)&id[ATA_ID_SPG] = ata_id_u32(id, ATA_ID_SPG);
859
860 /* as 64-bit value */
861 *(u64 *)&id[ATA_ID_LBA_CAPACITY_2] =
862 ata_id_u64(id, ATA_ID_LBA_CAPACITY_2);
863 #endif
864 }
865
866 static inline int is_multi_taskfile(struct ata_taskfile *tf)
867 {
868 return (tf->command == ATA_CMD_READ_MULTI) ||
869 (tf->command == ATA_CMD_WRITE_MULTI) ||
870 (tf->command == ATA_CMD_READ_MULTI_EXT) ||
871 (tf->command == ATA_CMD_WRITE_MULTI_EXT) ||
872 (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT);
873 }
874
875 static inline int ata_ok(u8 status)
876 {
877 return ((status & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ | ATA_ERR))
878 == ATA_DRDY);
879 }
880
881 static inline int lba_28_ok(u64 block, u32 n_block)
882 {
883 /* check the ending block number */
884 return ((block + n_block) < ((u64)1 << 28)) && (n_block <= 256);
885 }
886
887 static inline int lba_48_ok(u64 block, u32 n_block)
888 {
889 /* check the ending block number */
890 return ((block + n_block - 1) < ((u64)1 << 48)) && (n_block <= 65536);
891 }
892
893 #define sata_pmp_gscr_vendor(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] & 0xffff)
894 #define sata_pmp_gscr_devid(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] >> 16)
895 #define sata_pmp_gscr_rev(gscr) (((gscr)[SATA_PMP_GSCR_REV] >> 8) & 0xff)
896 #define sata_pmp_gscr_ports(gscr) ((gscr)[SATA_PMP_GSCR_PORT_INFO] & 0xf)
897
898 #endif /* __LINUX_ATA_H__ */
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