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ata: add missing ATA_ID_* defines (take 2)
[deliverable/linux.git] / include / linux / ata.h
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
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
38 enum {
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,
43 ATA_MAX_SECTORS_128 = 128,
44 ATA_MAX_SECTORS = 256,
45 ATA_MAX_SECTORS_LBA48 = 65535,/* TODO: 65536? */
46 ATA_MAX_SECTORS_TAPE = 65535,
47
48 ATA_ID_WORDS = 256,
49 ATA_ID_CONFIG = 0,
50 ATA_ID_CYLS = 1,
51 ATA_ID_HEADS = 3,
52 ATA_ID_SECTORS = 6,
53 ATA_ID_SERNO = 10,
54 ATA_ID_BUF_SIZE = 21,
55 ATA_ID_FW_REV = 23,
56 ATA_ID_PROD = 27,
57 ATA_ID_MAX_MULTSECT = 47,
58 ATA_ID_DWORD_IO = 48,
59 ATA_ID_CAPABILITY = 49,
60 ATA_ID_OLD_PIO_MODES = 51,
61 ATA_ID_OLD_DMA_MODES = 52,
62 ATA_ID_FIELD_VALID = 53,
63 ATA_ID_CUR_CYLS = 54,
64 ATA_ID_CUR_HEADS = 55,
65 ATA_ID_CUR_SECTORS = 56,
66 ATA_ID_MULTSECT = 59,
67 ATA_ID_LBA_CAPACITY = 60,
68 ATA_ID_SWDMA_MODES = 62,
69 ATA_ID_MWDMA_MODES = 63,
70 ATA_ID_PIO_MODES = 64,
71 ATA_ID_EIDE_DMA_MIN = 65,
72 ATA_ID_EIDE_DMA_TIME = 66,
73 ATA_ID_EIDE_PIO = 67,
74 ATA_ID_EIDE_PIO_IORDY = 68,
75 ATA_ID_QUEUE_DEPTH = 75,
76 ATA_ID_MAJOR_VER = 80,
77 ATA_ID_COMMAND_SET_1 = 82,
78 ATA_ID_COMMAND_SET_2 = 83,
79 ATA_ID_CFSSE = 84,
80 ATA_ID_CFS_ENABLE_1 = 85,
81 ATA_ID_CFS_ENABLE_2 = 86,
82 ATA_ID_CSF_DEFAULT = 87,
83 ATA_ID_UDMA_MODES = 88,
84 ATA_ID_HW_CONFIG = 93,
85 ATA_ID_SPG = 98,
86 ATA_ID_LBA_CAPACITY_2 = 100,
87 ATA_ID_LAST_LUN = 126,
88 ATA_ID_DLF = 128,
89 ATA_ID_CSFO = 129,
90 ATA_ID_CFA_POWER = 160,
91 ATA_ID_PIO4 = (1 << 1),
92
93 ATA_ID_SERNO_LEN = 20,
94 ATA_ID_FW_REV_LEN = 8,
95 ATA_ID_PROD_LEN = 40,
96
97 ATA_PCI_CTL_OFS = 2,
98
99 ATA_PIO0 = (1 << 0),
100 ATA_PIO1 = ATA_PIO0 | (1 << 1),
101 ATA_PIO2 = ATA_PIO1 | (1 << 2),
102 ATA_PIO3 = ATA_PIO2 | (1 << 3),
103 ATA_PIO4 = ATA_PIO3 | (1 << 4),
104 ATA_PIO5 = ATA_PIO4 | (1 << 5),
105 ATA_PIO6 = ATA_PIO5 | (1 << 6),
106
107 ATA_SWDMA0 = (1 << 0),
108 ATA_SWDMA1 = ATA_SWDMA0 | (1 << 1),
109 ATA_SWDMA2 = ATA_SWDMA1 | (1 << 2),
110
111 ATA_SWDMA2_ONLY = (1 << 2),
112
113 ATA_MWDMA0 = (1 << 0),
114 ATA_MWDMA1 = ATA_MWDMA0 | (1 << 1),
115 ATA_MWDMA2 = ATA_MWDMA1 | (1 << 2),
116
117 ATA_MWDMA12_ONLY = (1 << 1) | (1 << 2),
118 ATA_MWDMA2_ONLY = (1 << 2),
119
120 ATA_UDMA0 = (1 << 0),
121 ATA_UDMA1 = ATA_UDMA0 | (1 << 1),
122 ATA_UDMA2 = ATA_UDMA1 | (1 << 2),
123 ATA_UDMA3 = ATA_UDMA2 | (1 << 3),
124 ATA_UDMA4 = ATA_UDMA3 | (1 << 4),
125 ATA_UDMA5 = ATA_UDMA4 | (1 << 5),
126 ATA_UDMA6 = ATA_UDMA5 | (1 << 6),
127 ATA_UDMA7 = ATA_UDMA6 | (1 << 7),
128 /* ATA_UDMA7 is just for completeness... doesn't exist (yet?). */
129
130 ATA_UDMA_MASK_40C = ATA_UDMA2, /* udma0-2 */
131
132 /* DMA-related */
133 ATA_PRD_SZ = 8,
134 ATA_PRD_TBL_SZ = (ATA_MAX_PRD * ATA_PRD_SZ),
135 ATA_PRD_EOT = (1 << 31), /* end-of-table flag */
136
137 ATA_DMA_TABLE_OFS = 4,
138 ATA_DMA_STATUS = 2,
139 ATA_DMA_CMD = 0,
140 ATA_DMA_WR = (1 << 3),
141 ATA_DMA_START = (1 << 0),
142 ATA_DMA_INTR = (1 << 2),
143 ATA_DMA_ERR = (1 << 1),
144 ATA_DMA_ACTIVE = (1 << 0),
145
146 /* bits in ATA command block registers */
147 ATA_HOB = (1 << 7), /* LBA48 selector */
148 ATA_NIEN = (1 << 1), /* disable-irq flag */
149 ATA_LBA = (1 << 6), /* LBA28 selector */
150 ATA_DEV1 = (1 << 4), /* Select Device 1 (slave) */
151 ATA_DEVICE_OBS = (1 << 7) | (1 << 5), /* obs bits in dev reg */
152 ATA_DEVCTL_OBS = (1 << 3), /* obsolete bit in devctl reg */
153 ATA_BUSY = (1 << 7), /* BSY status bit */
154 ATA_DRDY = (1 << 6), /* device ready */
155 ATA_DF = (1 << 5), /* device fault */
156 ATA_DRQ = (1 << 3), /* data request i/o */
157 ATA_ERR = (1 << 0), /* have an error */
158 ATA_SRST = (1 << 2), /* software reset */
159 ATA_ICRC = (1 << 7), /* interface CRC error */
160 ATA_UNC = (1 << 6), /* uncorrectable media error */
161 ATA_IDNF = (1 << 4), /* ID not found */
162 ATA_ABORTED = (1 << 2), /* command aborted */
163
164 /* ATA command block registers */
165 ATA_REG_DATA = 0x00,
166 ATA_REG_ERR = 0x01,
167 ATA_REG_NSECT = 0x02,
168 ATA_REG_LBAL = 0x03,
169 ATA_REG_LBAM = 0x04,
170 ATA_REG_LBAH = 0x05,
171 ATA_REG_DEVICE = 0x06,
172 ATA_REG_STATUS = 0x07,
173
174 ATA_REG_FEATURE = ATA_REG_ERR, /* and their aliases */
175 ATA_REG_CMD = ATA_REG_STATUS,
176 ATA_REG_BYTEL = ATA_REG_LBAM,
177 ATA_REG_BYTEH = ATA_REG_LBAH,
178 ATA_REG_DEVSEL = ATA_REG_DEVICE,
179 ATA_REG_IRQ = ATA_REG_NSECT,
180
181 /* ATA device commands */
182 ATA_CMD_DEV_RESET = 0x08, /* ATAPI device reset */
183 ATA_CMD_CHK_POWER = 0xE5, /* check power mode */
184 ATA_CMD_STANDBY = 0xE2, /* place in standby power mode */
185 ATA_CMD_IDLE = 0xE3, /* place in idle power mode */
186 ATA_CMD_EDD = 0x90, /* execute device diagnostic */
187 ATA_CMD_FLUSH = 0xE7,
188 ATA_CMD_FLUSH_EXT = 0xEA,
189 ATA_CMD_ID_ATA = 0xEC,
190 ATA_CMD_ID_ATAPI = 0xA1,
191 ATA_CMD_READ = 0xC8,
192 ATA_CMD_READ_EXT = 0x25,
193 ATA_CMD_WRITE = 0xCA,
194 ATA_CMD_WRITE_EXT = 0x35,
195 ATA_CMD_WRITE_FUA_EXT = 0x3D,
196 ATA_CMD_FPDMA_READ = 0x60,
197 ATA_CMD_FPDMA_WRITE = 0x61,
198 ATA_CMD_PIO_READ = 0x20,
199 ATA_CMD_PIO_READ_EXT = 0x24,
200 ATA_CMD_PIO_WRITE = 0x30,
201 ATA_CMD_PIO_WRITE_EXT = 0x34,
202 ATA_CMD_READ_MULTI = 0xC4,
203 ATA_CMD_READ_MULTI_EXT = 0x29,
204 ATA_CMD_WRITE_MULTI = 0xC5,
205 ATA_CMD_WRITE_MULTI_EXT = 0x39,
206 ATA_CMD_WRITE_MULTI_FUA_EXT = 0xCE,
207 ATA_CMD_SET_FEATURES = 0xEF,
208 ATA_CMD_SET_MULTI = 0xC6,
209 ATA_CMD_PACKET = 0xA0,
210 ATA_CMD_VERIFY = 0x40,
211 ATA_CMD_VERIFY_EXT = 0x42,
212 ATA_CMD_STANDBYNOW1 = 0xE0,
213 ATA_CMD_IDLEIMMEDIATE = 0xE1,
214 ATA_CMD_SLEEP = 0xE6,
215 ATA_CMD_INIT_DEV_PARAMS = 0x91,
216 ATA_CMD_READ_NATIVE_MAX = 0xF8,
217 ATA_CMD_READ_NATIVE_MAX_EXT = 0x27,
218 ATA_CMD_SET_MAX = 0xF9,
219 ATA_CMD_SET_MAX_EXT = 0x37,
220 ATA_CMD_READ_LOG_EXT = 0x2f,
221 ATA_CMD_PMP_READ = 0xE4,
222 ATA_CMD_PMP_WRITE = 0xE8,
223 ATA_CMD_CONF_OVERLAY = 0xB1,
224 ATA_CMD_SEC_FREEZE_LOCK = 0xF5,
225
226 /* READ_LOG_EXT pages */
227 ATA_LOG_SATA_NCQ = 0x10,
228
229 /* READ/WRITE LONG (obsolete) */
230 ATA_CMD_READ_LONG = 0x22,
231 ATA_CMD_READ_LONG_ONCE = 0x23,
232 ATA_CMD_WRITE_LONG = 0x32,
233 ATA_CMD_WRITE_LONG_ONCE = 0x33,
234
235 /* SETFEATURES stuff */
236 SETFEATURES_XFER = 0x03,
237 XFER_UDMA_7 = 0x47,
238 XFER_UDMA_6 = 0x46,
239 XFER_UDMA_5 = 0x45,
240 XFER_UDMA_4 = 0x44,
241 XFER_UDMA_3 = 0x43,
242 XFER_UDMA_2 = 0x42,
243 XFER_UDMA_1 = 0x41,
244 XFER_UDMA_0 = 0x40,
245 XFER_MW_DMA_4 = 0x24, /* CFA only */
246 XFER_MW_DMA_3 = 0x23, /* CFA only */
247 XFER_MW_DMA_2 = 0x22,
248 XFER_MW_DMA_1 = 0x21,
249 XFER_MW_DMA_0 = 0x20,
250 XFER_SW_DMA_2 = 0x12,
251 XFER_SW_DMA_1 = 0x11,
252 XFER_SW_DMA_0 = 0x10,
253 XFER_PIO_6 = 0x0E, /* CFA only */
254 XFER_PIO_5 = 0x0D, /* CFA only */
255 XFER_PIO_4 = 0x0C,
256 XFER_PIO_3 = 0x0B,
257 XFER_PIO_2 = 0x0A,
258 XFER_PIO_1 = 0x09,
259 XFER_PIO_0 = 0x08,
260 XFER_PIO_SLOW = 0x00,
261
262 SETFEATURES_WC_ON = 0x02, /* Enable write cache */
263 SETFEATURES_WC_OFF = 0x82, /* Disable write cache */
264
265 SETFEATURES_SPINUP = 0x07, /* Spin-up drive */
266
267 SETFEATURES_SATA_ENABLE = 0x10, /* Enable use of SATA feature */
268 SETFEATURES_SATA_DISABLE = 0x90, /* Disable use of SATA feature */
269
270 /* SETFEATURE Sector counts for SATA features */
271 SATA_AN = 0x05, /* Asynchronous Notification */
272 SATA_DIPM = 0x03, /* Device Initiated Power Management */
273
274 /* feature values for SET_MAX */
275 ATA_SET_MAX_ADDR = 0x00,
276 ATA_SET_MAX_PASSWD = 0x01,
277 ATA_SET_MAX_LOCK = 0x02,
278 ATA_SET_MAX_UNLOCK = 0x03,
279 ATA_SET_MAX_FREEZE_LOCK = 0x04,
280
281 /* feature values for DEVICE CONFIGURATION OVERLAY */
282 ATA_DCO_RESTORE = 0xC0,
283 ATA_DCO_FREEZE_LOCK = 0xC1,
284 ATA_DCO_IDENTIFY = 0xC2,
285 ATA_DCO_SET = 0xC3,
286
287 /* ATAPI stuff */
288 ATAPI_PKT_DMA = (1 << 0),
289 ATAPI_DMADIR = (1 << 2), /* ATAPI data dir:
290 0=to device, 1=to host */
291 ATAPI_CDB_LEN = 16,
292
293 /* PMP stuff */
294 SATA_PMP_MAX_PORTS = 15,
295 SATA_PMP_CTRL_PORT = 15,
296
297 SATA_PMP_GSCR_DWORDS = 128,
298 SATA_PMP_GSCR_PROD_ID = 0,
299 SATA_PMP_GSCR_REV = 1,
300 SATA_PMP_GSCR_PORT_INFO = 2,
301 SATA_PMP_GSCR_ERROR = 32,
302 SATA_PMP_GSCR_ERROR_EN = 33,
303 SATA_PMP_GSCR_FEAT = 64,
304 SATA_PMP_GSCR_FEAT_EN = 96,
305
306 SATA_PMP_PSCR_STATUS = 0,
307 SATA_PMP_PSCR_ERROR = 1,
308 SATA_PMP_PSCR_CONTROL = 2,
309
310 SATA_PMP_FEAT_BIST = (1 << 0),
311 SATA_PMP_FEAT_PMREQ = (1 << 1),
312 SATA_PMP_FEAT_DYNSSC = (1 << 2),
313 SATA_PMP_FEAT_NOTIFY = (1 << 3),
314
315 /* cable types */
316 ATA_CBL_NONE = 0,
317 ATA_CBL_PATA40 = 1,
318 ATA_CBL_PATA80 = 2,
319 ATA_CBL_PATA40_SHORT = 3, /* 40 wire cable to high UDMA spec */
320 ATA_CBL_PATA_UNK = 4, /* don't know, maybe 80c? */
321 ATA_CBL_PATA_IGN = 5, /* don't know, ignore cable handling */
322 ATA_CBL_SATA = 6,
323
324 /* SATA Status and Control Registers */
325 SCR_STATUS = 0,
326 SCR_ERROR = 1,
327 SCR_CONTROL = 2,
328 SCR_ACTIVE = 3,
329 SCR_NOTIFICATION = 4,
330
331 /* SError bits */
332 SERR_DATA_RECOVERED = (1 << 0), /* recovered data error */
333 SERR_COMM_RECOVERED = (1 << 1), /* recovered comm failure */
334 SERR_DATA = (1 << 8), /* unrecovered data error */
335 SERR_PERSISTENT = (1 << 9), /* persistent data/comm error */
336 SERR_PROTOCOL = (1 << 10), /* protocol violation */
337 SERR_INTERNAL = (1 << 11), /* host internal error */
338 SERR_PHYRDY_CHG = (1 << 16), /* PHY RDY changed */
339 SERR_PHY_INT_ERR = (1 << 17), /* PHY internal error */
340 SERR_COMM_WAKE = (1 << 18), /* Comm wake */
341 SERR_10B_8B_ERR = (1 << 19), /* 10b to 8b decode error */
342 SERR_DISPARITY = (1 << 20), /* Disparity */
343 SERR_CRC = (1 << 21), /* CRC error */
344 SERR_HANDSHAKE = (1 << 22), /* Handshake error */
345 SERR_LINK_SEQ_ERR = (1 << 23), /* Link sequence error */
346 SERR_TRANS_ST_ERROR = (1 << 24), /* Transport state trans. error */
347 SERR_UNRECOG_FIS = (1 << 25), /* Unrecognized FIS */
348 SERR_DEV_XCHG = (1 << 26), /* device exchanged */
349
350 /* struct ata_taskfile flags */
351 ATA_TFLAG_LBA48 = (1 << 0), /* enable 48-bit LBA and "HOB" */
352 ATA_TFLAG_ISADDR = (1 << 1), /* enable r/w to nsect/lba regs */
353 ATA_TFLAG_DEVICE = (1 << 2), /* enable r/w to device reg */
354 ATA_TFLAG_WRITE = (1 << 3), /* data dir: host->dev==1 (write) */
355 ATA_TFLAG_LBA = (1 << 4), /* enable LBA */
356 ATA_TFLAG_FUA = (1 << 5), /* enable FUA */
357 ATA_TFLAG_POLLING = (1 << 6), /* set nIEN to 1 and use polling */
358
359 /* protocol flags */
360 ATA_PROT_FLAG_PIO = (1 << 0), /* is PIO */
361 ATA_PROT_FLAG_DMA = (1 << 1), /* is DMA */
362 ATA_PROT_FLAG_DATA = ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA,
363 ATA_PROT_FLAG_NCQ = (1 << 2), /* is NCQ */
364 ATA_PROT_FLAG_ATAPI = (1 << 3), /* is ATAPI */
365 };
366
367 enum ata_tf_protocols {
368 /* ATA taskfile protocols */
369 ATA_PROT_UNKNOWN, /* unknown/invalid */
370 ATA_PROT_NODATA, /* no data */
371 ATA_PROT_PIO, /* PIO data xfer */
372 ATA_PROT_DMA, /* DMA */
373 ATA_PROT_NCQ, /* NCQ */
374 ATAPI_PROT_NODATA, /* packet command, no data */
375 ATAPI_PROT_PIO, /* packet command, PIO data xfer*/
376 ATAPI_PROT_DMA, /* packet command with special DMA sauce */
377 };
378
379 enum ata_ioctls {
380 ATA_IOC_GET_IO32 = 0x309,
381 ATA_IOC_SET_IO32 = 0x324,
382 };
383
384 /* core structures */
385
386 struct ata_prd {
387 __le32 addr;
388 __le32 flags_len;
389 };
390
391 struct ata_taskfile {
392 unsigned long flags; /* ATA_TFLAG_xxx */
393 u8 protocol; /* ATA_PROT_xxx */
394
395 u8 ctl; /* control reg */
396
397 u8 hob_feature; /* additional data */
398 u8 hob_nsect; /* to support LBA48 */
399 u8 hob_lbal;
400 u8 hob_lbam;
401 u8 hob_lbah;
402
403 u8 feature;
404 u8 nsect;
405 u8 lbal;
406 u8 lbam;
407 u8 lbah;
408
409 u8 device;
410
411 u8 command; /* IO operation */
412 };
413
414 /*
415 * protocol tests
416 */
417 static inline unsigned int ata_prot_flags(u8 prot)
418 {
419 switch (prot) {
420 case ATA_PROT_NODATA:
421 return 0;
422 case ATA_PROT_PIO:
423 return ATA_PROT_FLAG_PIO;
424 case ATA_PROT_DMA:
425 return ATA_PROT_FLAG_DMA;
426 case ATA_PROT_NCQ:
427 return ATA_PROT_FLAG_DMA | ATA_PROT_FLAG_NCQ;
428 case ATAPI_PROT_NODATA:
429 return ATA_PROT_FLAG_ATAPI;
430 case ATAPI_PROT_PIO:
431 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_PIO;
432 case ATAPI_PROT_DMA:
433 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_DMA;
434 }
435 return 0;
436 }
437
438 static inline int ata_is_atapi(u8 prot)
439 {
440 return ata_prot_flags(prot) & ATA_PROT_FLAG_ATAPI;
441 }
442
443 static inline int ata_is_nodata(u8 prot)
444 {
445 return !(ata_prot_flags(prot) & ATA_PROT_FLAG_DATA);
446 }
447
448 static inline int ata_is_pio(u8 prot)
449 {
450 return ata_prot_flags(prot) & ATA_PROT_FLAG_PIO;
451 }
452
453 static inline int ata_is_dma(u8 prot)
454 {
455 return ata_prot_flags(prot) & ATA_PROT_FLAG_DMA;
456 }
457
458 static inline int ata_is_ncq(u8 prot)
459 {
460 return ata_prot_flags(prot) & ATA_PROT_FLAG_NCQ;
461 }
462
463 static inline int ata_is_data(u8 prot)
464 {
465 return ata_prot_flags(prot) & ATA_PROT_FLAG_DATA;
466 }
467
468 /*
469 * id tests
470 */
471 #define ata_id_is_ata(id) (((id)[ATA_ID_CONFIG] & (1 << 15)) == 0)
472 #define ata_id_has_lba(id) ((id)[ATA_ID_CAPABILITY] & (1 << 9))
473 #define ata_id_has_dma(id) ((id)[ATA_ID_CAPABILITY] & (1 << 8))
474 #define ata_id_has_ncq(id) ((id)[76] & (1 << 8))
475 #define ata_id_queue_depth(id) (((id)[ATA_ID_QUEUE_DEPTH] & 0x1f) + 1)
476 #define ata_id_removeable(id) ((id)[ATA_ID_CONFIG] & (1 << 7))
477 #define ata_id_has_atapi_AN(id) \
478 ( (((id)[76] != 0x0000) && ((id)[76] != 0xffff)) && \
479 ((id)[78] & (1 << 5)) )
480 #define ata_id_iordy_disable(id) ((id)[ATA_ID_CAPABILITY] & (1 << 10))
481 #define ata_id_has_iordy(id) ((id)[ATA_ID_CAPABILITY] & (1 << 11))
482 #define ata_id_u32(id,n) \
483 (((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)]))
484 #define ata_id_u64(id,n) \
485 ( ((u64) (id)[(n) + 3] << 48) | \
486 ((u64) (id)[(n) + 2] << 32) | \
487 ((u64) (id)[(n) + 1] << 16) | \
488 ((u64) (id)[(n) + 0]) )
489
490 #define ata_id_cdb_intr(id) (((id)[ATA_ID_CONFIG] & 0x60) == 0x20)
491
492 static inline bool ata_id_has_hipm(const u16 *id)
493 {
494 u16 val = id[76];
495
496 if (val == 0 || val == 0xffff)
497 return false;
498
499 return val & (1 << 9);
500 }
501
502 static inline bool ata_id_has_dipm(const u16 *id)
503 {
504 u16 val = id[78];
505
506 if (val == 0 || val == 0xffff)
507 return false;
508
509 return val & (1 << 3);
510 }
511
512
513 static inline int ata_id_has_fua(const u16 *id)
514 {
515 if ((id[ATA_ID_CFSSE] & 0xC000) != 0x4000)
516 return 0;
517 return id[ATA_ID_CFSSE] & (1 << 6);
518 }
519
520 static inline int ata_id_has_flush(const u16 *id)
521 {
522 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
523 return 0;
524 return id[ATA_ID_COMMAND_SET_2] & (1 << 12);
525 }
526
527 static inline int ata_id_has_flush_ext(const u16 *id)
528 {
529 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
530 return 0;
531 return id[ATA_ID_COMMAND_SET_2] & (1 << 13);
532 }
533
534 static inline int ata_id_has_lba48(const u16 *id)
535 {
536 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
537 return 0;
538 if (!ata_id_u64(id, ATA_ID_LBA_CAPACITY_2))
539 return 0;
540 return id[ATA_ID_COMMAND_SET_2] & (1 << 10);
541 }
542
543 static inline int ata_id_hpa_enabled(const u16 *id)
544 {
545 /* Yes children, word 83 valid bits cover word 82 data */
546 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
547 return 0;
548 /* And 87 covers 85-87 */
549 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
550 return 0;
551 /* Check command sets enabled as well as supported */
552 if ((id[ATA_ID_CFS_ENABLE_1] & (1 << 10)) == 0)
553 return 0;
554 return id[ATA_ID_COMMAND_SET_1] & (1 << 10);
555 }
556
557 static inline int ata_id_has_wcache(const u16 *id)
558 {
559 /* Yes children, word 83 valid bits cover word 82 data */
560 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
561 return 0;
562 return id[ATA_ID_COMMAND_SET_1] & (1 << 5);
563 }
564
565 static inline int ata_id_has_pm(const u16 *id)
566 {
567 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
568 return 0;
569 return id[ATA_ID_COMMAND_SET_1] & (1 << 3);
570 }
571
572 static inline int ata_id_rahead_enabled(const u16 *id)
573 {
574 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
575 return 0;
576 return id[ATA_ID_CFS_ENABLE_1] & (1 << 6);
577 }
578
579 static inline int ata_id_wcache_enabled(const u16 *id)
580 {
581 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
582 return 0;
583 return id[ATA_ID_CFS_ENABLE_1] & (1 << 5);
584 }
585
586 /**
587 * ata_id_major_version - get ATA level of drive
588 * @id: Identify data
589 *
590 * Caveats:
591 * ATA-1 considers identify optional
592 * ATA-2 introduces mandatory identify
593 * ATA-3 introduces word 80 and accurate reporting
594 *
595 * The practical impact of this is that ata_id_major_version cannot
596 * reliably report on drives below ATA3.
597 */
598
599 static inline unsigned int ata_id_major_version(const u16 *id)
600 {
601 unsigned int mver;
602
603 if (id[ATA_ID_MAJOR_VER] == 0xFFFF)
604 return 0;
605
606 for (mver = 14; mver >= 1; mver--)
607 if (id[ATA_ID_MAJOR_VER] & (1 << mver))
608 break;
609 return mver;
610 }
611
612 static inline int ata_id_is_sata(const u16 *id)
613 {
614 return ata_id_major_version(id) >= 5 && id[ATA_ID_HW_CONFIG] == 0;
615 }
616
617 static inline int ata_id_has_tpm(const u16 *id)
618 {
619 /* The TPM bits are only valid on ATA8 */
620 if (ata_id_major_version(id) < 8)
621 return 0;
622 if ((id[48] & 0xC000) != 0x4000)
623 return 0;
624 return id[48] & (1 << 0);
625 }
626
627 static inline int ata_id_has_dword_io(const u16 *id)
628 {
629 /* ATA 8 reuses this flag for "trusted" computing */
630 if (ata_id_major_version(id) > 7)
631 return 0;
632 if (id[ATA_ID_DWORD_IO] & (1 << 0))
633 return 1;
634 return 0;
635 }
636
637 static inline int ata_id_current_chs_valid(const u16 *id)
638 {
639 /* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command
640 has not been issued to the device then the values of
641 id[ATA_ID_CUR_CYLS] to id[ATA_ID_CUR_SECTORS] are vendor specific. */
642 return (id[ATA_ID_FIELD_VALID] & 1) && /* Current translation valid */
643 id[ATA_ID_CUR_CYLS] && /* cylinders in current translation */
644 id[ATA_ID_CUR_HEADS] && /* heads in current translation */
645 id[ATA_ID_CUR_HEADS] <= 16 &&
646 id[ATA_ID_CUR_SECTORS]; /* sectors in current translation */
647 }
648
649 static inline int ata_id_is_cfa(const u16 *id)
650 {
651 if (id[ATA_ID_CONFIG] == 0x848A) /* Standard CF */
652 return 1;
653 /* Could be CF hiding as standard ATA */
654 if (ata_id_major_version(id) >= 3 &&
655 id[ATA_ID_COMMAND_SET_1] != 0xFFFF &&
656 (id[ATA_ID_COMMAND_SET_1] & (1 << 2)))
657 return 1;
658 return 0;
659 }
660
661 static inline int ata_drive_40wire(const u16 *dev_id)
662 {
663 if (ata_id_is_sata(dev_id))
664 return 0; /* SATA */
665 if ((dev_id[ATA_ID_HW_CONFIG] & 0xE000) == 0x6000)
666 return 0; /* 80 wire */
667 return 1;
668 }
669
670 static inline int ata_drive_40wire_relaxed(const u16 *dev_id)
671 {
672 if ((dev_id[ATA_ID_HW_CONFIG] & 0x2000) == 0x2000)
673 return 0; /* 80 wire */
674 return 1;
675 }
676
677 static inline int atapi_cdb_len(const u16 *dev_id)
678 {
679 u16 tmp = dev_id[ATA_ID_CONFIG] & 0x3;
680 switch (tmp) {
681 case 0: return 12;
682 case 1: return 16;
683 default: return -1;
684 }
685 }
686
687 static inline int atapi_command_packet_set(const u16 *dev_id)
688 {
689 return (dev_id[ATA_ID_CONFIG] >> 8) & 0x1f;
690 }
691
692 static inline int atapi_id_dmadir(const u16 *dev_id)
693 {
694 return ata_id_major_version(dev_id) >= 7 && (dev_id[62] & 0x8000);
695 }
696
697 static inline int is_multi_taskfile(struct ata_taskfile *tf)
698 {
699 return (tf->command == ATA_CMD_READ_MULTI) ||
700 (tf->command == ATA_CMD_WRITE_MULTI) ||
701 (tf->command == ATA_CMD_READ_MULTI_EXT) ||
702 (tf->command == ATA_CMD_WRITE_MULTI_EXT) ||
703 (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT);
704 }
705
706 static inline int ata_ok(u8 status)
707 {
708 return ((status & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ | ATA_ERR))
709 == ATA_DRDY);
710 }
711
712 static inline int lba_28_ok(u64 block, u32 n_block)
713 {
714 /* check the ending block number */
715 return ((block + n_block - 1) < ((u64)1 << 28)) && (n_block <= 256);
716 }
717
718 static inline int lba_48_ok(u64 block, u32 n_block)
719 {
720 /* check the ending block number */
721 return ((block + n_block - 1) < ((u64)1 << 48)) && (n_block <= 65536);
722 }
723
724 #define sata_pmp_gscr_vendor(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] & 0xffff)
725 #define sata_pmp_gscr_devid(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] >> 16)
726 #define sata_pmp_gscr_rev(gscr) (((gscr)[SATA_PMP_GSCR_REV] >> 8) & 0xff)
727 #define sata_pmp_gscr_ports(gscr) ((gscr)[SATA_PMP_GSCR_PORT_INFO] & 0xf)
728
729 #endif /* __LINUX_ATA_H__ */
Linux kernel - Deliverables
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