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Merge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[linux-2.6/linux-2.6-openrd.git] / include / linux / ata.h
blob38a6948ce0c2cd7a50917c1a82570d851196f053
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/kernel.h>
33 #include <linux/string.h>
34 #include <linux/types.h>
35 #include <asm/byteorder.h>
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
41 enum {
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,
46 ATA_MAX_SECTORS_128 = 128,
47 ATA_MAX_SECTORS = 256,
48 ATA_MAX_SECTORS_LBA48 = 65535,/* TODO: 65536? */
49 ATA_MAX_SECTORS_TAPE = 65535,
50
51 ATA_ID_WORDS = 256,
52 ATA_ID_CONFIG = 0,
53 ATA_ID_CYLS = 1,
54 ATA_ID_HEADS = 3,
55 ATA_ID_SECTORS = 6,
56 ATA_ID_SERNO = 10,
57 ATA_ID_BUF_SIZE = 21,
58 ATA_ID_FW_REV = 23,
59 ATA_ID_PROD = 27,
60 ATA_ID_MAX_MULTSECT = 47,
61 ATA_ID_DWORD_IO = 48,
62 ATA_ID_CAPABILITY = 49,
63 ATA_ID_OLD_PIO_MODES = 51,
64 ATA_ID_OLD_DMA_MODES = 52,
65 ATA_ID_FIELD_VALID = 53,
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,
72 ATA_ID_MWDMA_MODES = 63,
73 ATA_ID_PIO_MODES = 64,
74 ATA_ID_EIDE_DMA_MIN = 65,
75 ATA_ID_EIDE_DMA_TIME = 66,
76 ATA_ID_EIDE_PIO = 67,
77 ATA_ID_EIDE_PIO_IORDY = 68,
78 ATA_ID_ADDITIONAL_SUPP = 69,
79 ATA_ID_QUEUE_DEPTH = 75,
80 ATA_ID_MAJOR_VER = 80,
81 ATA_ID_COMMAND_SET_1 = 82,
82 ATA_ID_COMMAND_SET_2 = 83,
83 ATA_ID_CFSSE = 84,
84 ATA_ID_CFS_ENABLE_1 = 85,
85 ATA_ID_CFS_ENABLE_2 = 86,
86 ATA_ID_CSF_DEFAULT = 87,
87 ATA_ID_UDMA_MODES = 88,
88 ATA_ID_HW_CONFIG = 93,
89 ATA_ID_SPG = 98,
90 ATA_ID_LBA_CAPACITY_2 = 100,
91 ATA_ID_SECTOR_SIZE = 106,
92 ATA_ID_LAST_LUN = 126,
93 ATA_ID_DLF = 128,
94 ATA_ID_CSFO = 129,
95 ATA_ID_CFA_POWER = 160,
96 ATA_ID_CFA_KEY_MGMT = 162,
97 ATA_ID_CFA_MODES = 163,
98 ATA_ID_DATA_SET_MGMT = 169,
99 ATA_ID_ROT_SPEED = 217,
100 ATA_ID_PIO4 = (1 << 1),
101
102 ATA_ID_SERNO_LEN = 20,
103 ATA_ID_FW_REV_LEN = 8,
104 ATA_ID_PROD_LEN = 40,
105
106 ATA_PCI_CTL_OFS = 2,
107
108 ATA_PIO0 = (1 << 0),
109 ATA_PIO1 = ATA_PIO0 | (1 << 1),
110 ATA_PIO2 = ATA_PIO1 | (1 << 2),
111 ATA_PIO3 = ATA_PIO2 | (1 << 3),
112 ATA_PIO4 = ATA_PIO3 | (1 << 4),
113 ATA_PIO5 = ATA_PIO4 | (1 << 5),
114 ATA_PIO6 = ATA_PIO5 | (1 << 6),
115
116 ATA_PIO4_ONLY = (1 << 4),
117
118 ATA_SWDMA0 = (1 << 0),
119 ATA_SWDMA1 = ATA_SWDMA0 | (1 << 1),
120 ATA_SWDMA2 = ATA_SWDMA1 | (1 << 2),
121
122 ATA_SWDMA2_ONLY = (1 << 2),
123
124 ATA_MWDMA0 = (1 << 0),
125 ATA_MWDMA1 = ATA_MWDMA0 | (1 << 1),
126 ATA_MWDMA2 = ATA_MWDMA1 | (1 << 2),
127 ATA_MWDMA3 = ATA_MWDMA2 | (1 << 3),
128 ATA_MWDMA4 = ATA_MWDMA3 | (1 << 4),
129
130 ATA_MWDMA12_ONLY = (1 << 1) | (1 << 2),
131 ATA_MWDMA2_ONLY = (1 << 2),
132
133 ATA_UDMA0 = (1 << 0),
134 ATA_UDMA1 = ATA_UDMA0 | (1 << 1),
135 ATA_UDMA2 = ATA_UDMA1 | (1 << 2),
136 ATA_UDMA3 = ATA_UDMA2 | (1 << 3),
137 ATA_UDMA4 = ATA_UDMA3 | (1 << 4),
138 ATA_UDMA5 = ATA_UDMA4 | (1 << 5),
139 ATA_UDMA6 = ATA_UDMA5 | (1 << 6),
140 ATA_UDMA7 = ATA_UDMA6 | (1 << 7),
141 /* ATA_UDMA7 is just for completeness... doesn't exist (yet?). */
142
143 ATA_UDMA24_ONLY = (1 << 2) | (1 << 4),
144
145 ATA_UDMA_MASK_40C = ATA_UDMA2, /* udma0-2 */
146
147 /* DMA-related */
148 ATA_PRD_SZ = 8,
149 ATA_PRD_TBL_SZ = (ATA_MAX_PRD * ATA_PRD_SZ),
150 ATA_PRD_EOT = (1 << 31), /* end-of-table flag */
151
152 ATA_DMA_TABLE_OFS = 4,
153 ATA_DMA_STATUS = 2,
154 ATA_DMA_CMD = 0,
155 ATA_DMA_WR = (1 << 3),
156 ATA_DMA_START = (1 << 0),
157 ATA_DMA_INTR = (1 << 2),
158 ATA_DMA_ERR = (1 << 1),
159 ATA_DMA_ACTIVE = (1 << 0),
160
161 /* bits in ATA command block registers */
162 ATA_HOB = (1 << 7), /* LBA48 selector */
163 ATA_NIEN = (1 << 1), /* disable-irq flag */
164 ATA_LBA = (1 << 6), /* LBA28 selector */
165 ATA_DEV1 = (1 << 4), /* Select Device 1 (slave) */
166 ATA_DEVICE_OBS = (1 << 7) | (1 << 5), /* obs bits in dev reg */
167 ATA_DEVCTL_OBS = (1 << 3), /* obsolete bit in devctl reg */
168 ATA_BUSY = (1 << 7), /* BSY status bit */
169 ATA_DRDY = (1 << 6), /* device ready */
170 ATA_DF = (1 << 5), /* device fault */
171 ATA_DSC = (1 << 4), /* drive seek complete */
172 ATA_DRQ = (1 << 3), /* data request i/o */
173 ATA_CORR = (1 << 2), /* corrected data error */
174 ATA_IDX = (1 << 1), /* index */
175 ATA_ERR = (1 << 0), /* have an error */
176 ATA_SRST = (1 << 2), /* software reset */
177 ATA_ICRC = (1 << 7), /* interface CRC error */
178 ATA_BBK = ATA_ICRC, /* pre-EIDE: block marked bad */
179 ATA_UNC = (1 << 6), /* uncorrectable media error */
180 ATA_MC = (1 << 5), /* media changed */
181 ATA_IDNF = (1 << 4), /* ID not found */
182 ATA_MCR = (1 << 3), /* media change requested */
183 ATA_ABORTED = (1 << 2), /* command aborted */
184 ATA_TRK0NF = (1 << 1), /* track 0 not found */
185 ATA_AMNF = (1 << 0), /* address mark not found */
186 ATAPI_LFS = 0xF0, /* last failed sense */
187 ATAPI_EOM = ATA_TRK0NF, /* end of media */
188 ATAPI_ILI = ATA_AMNF, /* illegal length indication */
189 ATAPI_IO = (1 << 1),
190 ATAPI_COD = (1 << 0),
191
192 /* ATA command block registers */
193 ATA_REG_DATA = 0x00,
194 ATA_REG_ERR = 0x01,
195 ATA_REG_NSECT = 0x02,
196 ATA_REG_LBAL = 0x03,
197 ATA_REG_LBAM = 0x04,
198 ATA_REG_LBAH = 0x05,
199 ATA_REG_DEVICE = 0x06,
200 ATA_REG_STATUS = 0x07,
201
202 ATA_REG_FEATURE = ATA_REG_ERR, /* and their aliases */
203 ATA_REG_CMD = ATA_REG_STATUS,
204 ATA_REG_BYTEL = ATA_REG_LBAM,
205 ATA_REG_BYTEH = ATA_REG_LBAH,
206 ATA_REG_DEVSEL = ATA_REG_DEVICE,
207 ATA_REG_IRQ = ATA_REG_NSECT,
208
209 /* ATA device commands */
210 ATA_CMD_DEV_RESET = 0x08, /* ATAPI device reset */
211 ATA_CMD_CHK_POWER = 0xE5, /* check power mode */
212 ATA_CMD_STANDBY = 0xE2, /* place in standby power mode */
213 ATA_CMD_IDLE = 0xE3, /* place in idle power mode */
214 ATA_CMD_EDD = 0x90, /* execute device diagnostic */
215 ATA_CMD_DOWNLOAD_MICRO = 0x92,
216 ATA_CMD_NOP = 0x00,
217 ATA_CMD_FLUSH = 0xE7,
218 ATA_CMD_FLUSH_EXT = 0xEA,
219 ATA_CMD_ID_ATA = 0xEC,
220 ATA_CMD_ID_ATAPI = 0xA1,
221 ATA_CMD_SERVICE = 0xA2,
222 ATA_CMD_READ = 0xC8,
223 ATA_CMD_READ_EXT = 0x25,
224 ATA_CMD_READ_QUEUED = 0x26,
225 ATA_CMD_READ_STREAM_EXT = 0x2B,
226 ATA_CMD_READ_STREAM_DMA_EXT = 0x2A,
227 ATA_CMD_WRITE = 0xCA,
228 ATA_CMD_WRITE_EXT = 0x35,
229 ATA_CMD_WRITE_QUEUED = 0x36,
230 ATA_CMD_WRITE_STREAM_EXT = 0x3B,
231 ATA_CMD_WRITE_STREAM_DMA_EXT = 0x3A,
232 ATA_CMD_WRITE_FUA_EXT = 0x3D,
233 ATA_CMD_WRITE_QUEUED_FUA_EXT = 0x3E,
234 ATA_CMD_FPDMA_READ = 0x60,
235 ATA_CMD_FPDMA_WRITE = 0x61,
236 ATA_CMD_PIO_READ = 0x20,
237 ATA_CMD_PIO_READ_EXT = 0x24,
238 ATA_CMD_PIO_WRITE = 0x30,
239 ATA_CMD_PIO_WRITE_EXT = 0x34,
240 ATA_CMD_READ_MULTI = 0xC4,
241 ATA_CMD_READ_MULTI_EXT = 0x29,
242 ATA_CMD_WRITE_MULTI = 0xC5,
243 ATA_CMD_WRITE_MULTI_EXT = 0x39,
244 ATA_CMD_WRITE_MULTI_FUA_EXT = 0xCE,
245 ATA_CMD_SET_FEATURES = 0xEF,
246 ATA_CMD_SET_MULTI = 0xC6,
247 ATA_CMD_PACKET = 0xA0,
248 ATA_CMD_VERIFY = 0x40,
249 ATA_CMD_VERIFY_EXT = 0x42,
250 ATA_CMD_WRITE_UNCORR_EXT = 0x45,
251 ATA_CMD_STANDBYNOW1 = 0xE0,
252 ATA_CMD_IDLEIMMEDIATE = 0xE1,
253 ATA_CMD_SLEEP = 0xE6,
254 ATA_CMD_INIT_DEV_PARAMS = 0x91,
255 ATA_CMD_READ_NATIVE_MAX = 0xF8,
256 ATA_CMD_READ_NATIVE_MAX_EXT = 0x27,
257 ATA_CMD_SET_MAX = 0xF9,
258 ATA_CMD_SET_MAX_EXT = 0x37,
259 ATA_CMD_READ_LOG_EXT = 0x2F,
260 ATA_CMD_WRITE_LOG_EXT = 0x3F,
261 ATA_CMD_READ_LOG_DMA_EXT = 0x47,
262 ATA_CMD_WRITE_LOG_DMA_EXT = 0x57,
263 ATA_CMD_TRUSTED_RCV = 0x5C,
264 ATA_CMD_TRUSTED_RCV_DMA = 0x5D,
265 ATA_CMD_TRUSTED_SND = 0x5E,
266 ATA_CMD_TRUSTED_SND_DMA = 0x5F,
267 ATA_CMD_PMP_READ = 0xE4,
268 ATA_CMD_PMP_WRITE = 0xE8,
269 ATA_CMD_CONF_OVERLAY = 0xB1,
270 ATA_CMD_SEC_SET_PASS = 0xF1,
271 ATA_CMD_SEC_UNLOCK = 0xF2,
272 ATA_CMD_SEC_ERASE_PREP = 0xF3,
273 ATA_CMD_SEC_ERASE_UNIT = 0xF4,
274 ATA_CMD_SEC_FREEZE_LOCK = 0xF5,
275 ATA_CMD_SEC_DISABLE_PASS = 0xF6,
276 ATA_CMD_CONFIG_STREAM = 0x51,
277 ATA_CMD_SMART = 0xB0,
278 ATA_CMD_MEDIA_LOCK = 0xDE,
279 ATA_CMD_MEDIA_UNLOCK = 0xDF,
280 ATA_CMD_DSM = 0x06,
281 ATA_CMD_CHK_MED_CRD_TYP = 0xD1,
282 ATA_CMD_CFA_REQ_EXT_ERR = 0x03,
283 ATA_CMD_CFA_WRITE_NE = 0x38,
284 ATA_CMD_CFA_TRANS_SECT = 0x87,
285 ATA_CMD_CFA_ERASE = 0xC0,
286 ATA_CMD_CFA_WRITE_MULT_NE = 0xCD,
287 /* marked obsolete in the ATA/ATAPI-7 spec */
288 ATA_CMD_RESTORE = 0x10,
289
290 /* READ_LOG_EXT pages */
291 ATA_LOG_SATA_NCQ = 0x10,
292
293 /* READ/WRITE LONG (obsolete) */
294 ATA_CMD_READ_LONG = 0x22,
295 ATA_CMD_READ_LONG_ONCE = 0x23,
296 ATA_CMD_WRITE_LONG = 0x32,
297 ATA_CMD_WRITE_LONG_ONCE = 0x33,
298
299 /* SETFEATURES stuff */
300 SETFEATURES_XFER = 0x03,
301 XFER_UDMA_7 = 0x47,
302 XFER_UDMA_6 = 0x46,
303 XFER_UDMA_5 = 0x45,
304 XFER_UDMA_4 = 0x44,
305 XFER_UDMA_3 = 0x43,
306 XFER_UDMA_2 = 0x42,
307 XFER_UDMA_1 = 0x41,
308 XFER_UDMA_0 = 0x40,
309 XFER_MW_DMA_4 = 0x24, /* CFA only */
310 XFER_MW_DMA_3 = 0x23, /* CFA only */
311 XFER_MW_DMA_2 = 0x22,
312 XFER_MW_DMA_1 = 0x21,
313 XFER_MW_DMA_0 = 0x20,
314 XFER_SW_DMA_2 = 0x12,
315 XFER_SW_DMA_1 = 0x11,
316 XFER_SW_DMA_0 = 0x10,
317 XFER_PIO_6 = 0x0E, /* CFA only */
318 XFER_PIO_5 = 0x0D, /* CFA only */
319 XFER_PIO_4 = 0x0C,
320 XFER_PIO_3 = 0x0B,
321 XFER_PIO_2 = 0x0A,
322 XFER_PIO_1 = 0x09,
323 XFER_PIO_0 = 0x08,
324 XFER_PIO_SLOW = 0x00,
325
326 SETFEATURES_WC_ON = 0x02, /* Enable write cache */
327 SETFEATURES_WC_OFF = 0x82, /* Disable write cache */
328
329 /* Enable/Disable Automatic Acoustic Management */
330 SETFEATURES_AAM_ON = 0x42,
331 SETFEATURES_AAM_OFF = 0xC2,
332
333 SETFEATURES_SPINUP = 0x07, /* Spin-up drive */
334
335 SETFEATURES_SATA_ENABLE = 0x10, /* Enable use of SATA feature */
336 SETFEATURES_SATA_DISABLE = 0x90, /* Disable use of SATA feature */
337
338 /* SETFEATURE Sector counts for SATA features */
339 SATA_FPDMA_OFFSET = 0x01, /* FPDMA non-zero buffer offsets */
340 SATA_FPDMA_AA = 0x02, /* FPDMA Setup FIS Auto-Activate */
341 SATA_DIPM = 0x03, /* Device Initiated Power Management */
342 SATA_FPDMA_IN_ORDER = 0x04, /* FPDMA in-order data delivery */
343 SATA_AN = 0x05, /* Asynchronous Notification */
344 SATA_SSP = 0x06, /* Software Settings Preservation */
345
346 /* feature values for SET_MAX */
347 ATA_SET_MAX_ADDR = 0x00,
348 ATA_SET_MAX_PASSWD = 0x01,
349 ATA_SET_MAX_LOCK = 0x02,
350 ATA_SET_MAX_UNLOCK = 0x03,
351 ATA_SET_MAX_FREEZE_LOCK = 0x04,
352
353 /* feature values for DEVICE CONFIGURATION OVERLAY */
354 ATA_DCO_RESTORE = 0xC0,
355 ATA_DCO_FREEZE_LOCK = 0xC1,
356 ATA_DCO_IDENTIFY = 0xC2,
357 ATA_DCO_SET = 0xC3,
358
359 /* feature values for SMART */
360 ATA_SMART_ENABLE = 0xD8,
361 ATA_SMART_READ_VALUES = 0xD0,
362 ATA_SMART_READ_THRESHOLDS = 0xD1,
363
364 /* feature values for Data Set Management */
365 ATA_DSM_TRIM = 0x01,
366
367 /* password used in LBA Mid / LBA High for executing SMART commands */
368 ATA_SMART_LBAM_PASS = 0x4F,
369 ATA_SMART_LBAH_PASS = 0xC2,
370
371 /* ATAPI stuff */
372 ATAPI_PKT_DMA = (1 << 0),
373 ATAPI_DMADIR = (1 << 2), /* ATAPI data dir:
374 0=to device, 1=to host */
375 ATAPI_CDB_LEN = 16,
376
377 /* PMP stuff */
378 SATA_PMP_MAX_PORTS = 15,
379 SATA_PMP_CTRL_PORT = 15,
380
381 SATA_PMP_GSCR_DWORDS = 128,
382 SATA_PMP_GSCR_PROD_ID = 0,
383 SATA_PMP_GSCR_REV = 1,
384 SATA_PMP_GSCR_PORT_INFO = 2,
385 SATA_PMP_GSCR_ERROR = 32,
386 SATA_PMP_GSCR_ERROR_EN = 33,
387 SATA_PMP_GSCR_FEAT = 64,
388 SATA_PMP_GSCR_FEAT_EN = 96,
389
390 SATA_PMP_PSCR_STATUS = 0,
391 SATA_PMP_PSCR_ERROR = 1,
392 SATA_PMP_PSCR_CONTROL = 2,
393
394 SATA_PMP_FEAT_BIST = (1 << 0),
395 SATA_PMP_FEAT_PMREQ = (1 << 1),
396 SATA_PMP_FEAT_DYNSSC = (1 << 2),
397 SATA_PMP_FEAT_NOTIFY = (1 << 3),
398
399 /* cable types */
400 ATA_CBL_NONE = 0,
401 ATA_CBL_PATA40 = 1,
402 ATA_CBL_PATA80 = 2,
403 ATA_CBL_PATA40_SHORT = 3, /* 40 wire cable to high UDMA spec */
404 ATA_CBL_PATA_UNK = 4, /* don't know, maybe 80c? */
405 ATA_CBL_PATA_IGN = 5, /* don't know, ignore cable handling */
406 ATA_CBL_SATA = 6,
407
408 /* SATA Status and Control Registers */
409 SCR_STATUS = 0,
410 SCR_ERROR = 1,
411 SCR_CONTROL = 2,
412 SCR_ACTIVE = 3,
413 SCR_NOTIFICATION = 4,
414
415 /* SError bits */
416 SERR_DATA_RECOVERED = (1 << 0), /* recovered data error */
417 SERR_COMM_RECOVERED = (1 << 1), /* recovered comm failure */
418 SERR_DATA = (1 << 8), /* unrecovered data error */
419 SERR_PERSISTENT = (1 << 9), /* persistent data/comm error */
420 SERR_PROTOCOL = (1 << 10), /* protocol violation */
421 SERR_INTERNAL = (1 << 11), /* host internal error */
422 SERR_PHYRDY_CHG = (1 << 16), /* PHY RDY changed */
423 SERR_PHY_INT_ERR = (1 << 17), /* PHY internal error */
424 SERR_COMM_WAKE = (1 << 18), /* Comm wake */
425 SERR_10B_8B_ERR = (1 << 19), /* 10b to 8b decode error */
426 SERR_DISPARITY = (1 << 20), /* Disparity */
427 SERR_CRC = (1 << 21), /* CRC error */
428 SERR_HANDSHAKE = (1 << 22), /* Handshake error */
429 SERR_LINK_SEQ_ERR = (1 << 23), /* Link sequence error */
430 SERR_TRANS_ST_ERROR = (1 << 24), /* Transport state trans. error */
431 SERR_UNRECOG_FIS = (1 << 25), /* Unrecognized FIS */
432 SERR_DEV_XCHG = (1 << 26), /* device exchanged */
433
434 /* struct ata_taskfile flags */
435 ATA_TFLAG_LBA48 = (1 << 0), /* enable 48-bit LBA and "HOB" */
436 ATA_TFLAG_ISADDR = (1 << 1), /* enable r/w to nsect/lba regs */
437 ATA_TFLAG_DEVICE = (1 << 2), /* enable r/w to device reg */
438 ATA_TFLAG_WRITE = (1 << 3), /* data dir: host->dev==1 (write) */
439 ATA_TFLAG_LBA = (1 << 4), /* enable LBA */
440 ATA_TFLAG_FUA = (1 << 5), /* enable FUA */
441 ATA_TFLAG_POLLING = (1 << 6), /* set nIEN to 1 and use polling */
442
443 /* protocol flags */
444 ATA_PROT_FLAG_PIO = (1 << 0), /* is PIO */
445 ATA_PROT_FLAG_DMA = (1 << 1), /* is DMA */
446 ATA_PROT_FLAG_DATA = ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA,
447 ATA_PROT_FLAG_NCQ = (1 << 2), /* is NCQ */
448 ATA_PROT_FLAG_ATAPI = (1 << 3), /* is ATAPI */
449 };
450
451 enum ata_tf_protocols {
452 /* ATA taskfile protocols */
453 ATA_PROT_UNKNOWN, /* unknown/invalid */
454 ATA_PROT_NODATA, /* no data */
455 ATA_PROT_PIO, /* PIO data xfer */
456 ATA_PROT_DMA, /* DMA */
457 ATA_PROT_NCQ, /* NCQ */
458 ATAPI_PROT_NODATA, /* packet command, no data */
459 ATAPI_PROT_PIO, /* packet command, PIO data xfer*/
460 ATAPI_PROT_DMA, /* packet command with special DMA sauce */
461 };
462
463 enum ata_ioctls {
464 ATA_IOC_GET_IO32 = 0x309,
465 ATA_IOC_SET_IO32 = 0x324,
466 };
467
468 /* core structures */
469
470 struct ata_prd {
471 __le32 addr;
472 __le32 flags_len;
473 };
474
475 struct ata_taskfile {
476 unsigned long flags; /* ATA_TFLAG_xxx */
477 u8 protocol; /* ATA_PROT_xxx */
478
479 u8 ctl; /* control reg */
480
481 u8 hob_feature; /* additional data */
482 u8 hob_nsect; /* to support LBA48 */
483 u8 hob_lbal;
484 u8 hob_lbam;
485 u8 hob_lbah;
486
487 u8 feature;
488 u8 nsect;
489 u8 lbal;
490 u8 lbam;
491 u8 lbah;
492
493 u8 device;
494
495 u8 command; /* IO operation */
496 };
497
498 /*
499 * protocol tests
500 */
501 static inline unsigned int ata_prot_flags(u8 prot)
502 {
503 switch (prot) {
504 case ATA_PROT_NODATA:
505 return 0;
506 case ATA_PROT_PIO:
507 return ATA_PROT_FLAG_PIO;
508 case ATA_PROT_DMA:
509 return ATA_PROT_FLAG_DMA;
510 case ATA_PROT_NCQ:
511 return ATA_PROT_FLAG_DMA | ATA_PROT_FLAG_NCQ;
512 case ATAPI_PROT_NODATA:
513 return ATA_PROT_FLAG_ATAPI;
514 case ATAPI_PROT_PIO:
515 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_PIO;
516 case ATAPI_PROT_DMA:
517 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_DMA;
518 }
519 return 0;
520 }
521
522 static inline int ata_is_atapi(u8 prot)
523 {
524 return ata_prot_flags(prot) & ATA_PROT_FLAG_ATAPI;
525 }
526
527 static inline int ata_is_nodata(u8 prot)
528 {
529 return !(ata_prot_flags(prot) & ATA_PROT_FLAG_DATA);
530 }
531
532 static inline int ata_is_pio(u8 prot)
533 {
534 return ata_prot_flags(prot) & ATA_PROT_FLAG_PIO;
535 }
536
537 static inline int ata_is_dma(u8 prot)
538 {
539 return ata_prot_flags(prot) & ATA_PROT_FLAG_DMA;
540 }
541
542 static inline int ata_is_ncq(u8 prot)
543 {
544 return ata_prot_flags(prot) & ATA_PROT_FLAG_NCQ;
545 }
546
547 static inline int ata_is_data(u8 prot)
548 {
549 return ata_prot_flags(prot) & ATA_PROT_FLAG_DATA;
550 }
551
552 /*
553 * id tests
554 */
555 #define ata_id_is_ata(id) (((id)[ATA_ID_CONFIG] & (1 << 15)) == 0)
556 #define ata_id_has_lba(id) ((id)[ATA_ID_CAPABILITY] & (1 << 9))
557 #define ata_id_has_dma(id) ((id)[ATA_ID_CAPABILITY] & (1 << 8))
558 #define ata_id_has_ncq(id) ((id)[76] & (1 << 8))
559 #define ata_id_queue_depth(id) (((id)[ATA_ID_QUEUE_DEPTH] & 0x1f) + 1)
560 #define ata_id_removeable(id) ((id)[ATA_ID_CONFIG] & (1 << 7))
561 #define ata_id_has_atapi_AN(id) \
562 ( (((id)[76] != 0x0000) && ((id)[76] != 0xffff)) && \
563 ((id)[78] & (1 << 5)) )
564 #define ata_id_has_fpdma_aa(id) \
565 ( (((id)[76] != 0x0000) && ((id)[76] != 0xffff)) && \
566 ((id)[78] & (1 << 2)) )
567 #define ata_id_iordy_disable(id) ((id)[ATA_ID_CAPABILITY] & (1 << 10))
568 #define ata_id_has_iordy(id) ((id)[ATA_ID_CAPABILITY] & (1 << 11))
569 #define ata_id_u32(id,n) \
570 (((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)]))
571 #define ata_id_u64(id,n) \
572 ( ((u64) (id)[(n) + 3] << 48) | \
573 ((u64) (id)[(n) + 2] << 32) | \
574 ((u64) (id)[(n) + 1] << 16) | \
575 ((u64) (id)[(n) + 0]) )
576
577 #define ata_id_cdb_intr(id) (((id)[ATA_ID_CONFIG] & 0x60) == 0x20)
578
579 static inline bool ata_id_has_hipm(const u16 *id)
580 {
581 u16 val = id[76];
582
583 if (val == 0 || val == 0xffff)
584 return false;
585
586 return val & (1 << 9);
587 }
588
589 static inline bool ata_id_has_dipm(const u16 *id)
590 {
591 u16 val = id[78];
592
593 if (val == 0 || val == 0xffff)
594 return false;
595
596 return val & (1 << 3);
597 }
598
599
600 static inline int ata_id_has_fua(const u16 *id)
601 {
602 if ((id[ATA_ID_CFSSE] & 0xC000) != 0x4000)
603 return 0;
604 return id[ATA_ID_CFSSE] & (1 << 6);
605 }
606
607 static inline int ata_id_has_flush(const u16 *id)
608 {
609 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
610 return 0;
611 return id[ATA_ID_COMMAND_SET_2] & (1 << 12);
612 }
613
614 static inline int ata_id_flush_enabled(const u16 *id)
615 {
616 if (ata_id_has_flush(id) == 0)
617 return 0;
618 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
619 return 0;
620 return id[ATA_ID_CFS_ENABLE_2] & (1 << 12);
621 }
622
623 static inline int ata_id_has_flush_ext(const u16 *id)
624 {
625 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
626 return 0;
627 return id[ATA_ID_COMMAND_SET_2] & (1 << 13);
628 }
629
630 static inline int ata_id_flush_ext_enabled(const u16 *id)
631 {
632 if (ata_id_has_flush_ext(id) == 0)
633 return 0;
634 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
635 return 0;
636 /*
637 * some Maxtor disks have bit 13 defined incorrectly
638 * so check bit 10 too
639 */
640 return (id[ATA_ID_CFS_ENABLE_2] & 0x2400) == 0x2400;
641 }
642
643 static inline int ata_id_has_large_logical_sectors(const u16 *id)
644 {
645 if ((id[ATA_ID_SECTOR_SIZE] & 0xc000) != 0x4000)
646 return 0;
647 return id[ATA_ID_SECTOR_SIZE] & (1 << 13);
648 }
649
650 static inline u8 ata_id_logical_per_physical_sectors(const u16 *id)
651 {
652 return id[ATA_ID_SECTOR_SIZE] & 0xf;
653 }
654
655 static inline int ata_id_has_lba48(const u16 *id)
656 {
657 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
658 return 0;
659 if (!ata_id_u64(id, ATA_ID_LBA_CAPACITY_2))
660 return 0;
661 return id[ATA_ID_COMMAND_SET_2] & (1 << 10);
662 }
663
664 static inline int ata_id_lba48_enabled(const u16 *id)
665 {
666 if (ata_id_has_lba48(id) == 0)
667 return 0;
668 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
669 return 0;
670 return id[ATA_ID_CFS_ENABLE_2] & (1 << 10);
671 }
672
673 static inline int ata_id_hpa_enabled(const u16 *id)
674 {
675 /* Yes children, word 83 valid bits cover word 82 data */
676 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
677 return 0;
678 /* And 87 covers 85-87 */
679 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
680 return 0;
681 /* Check command sets enabled as well as supported */
682 if ((id[ATA_ID_CFS_ENABLE_1] & (1 << 10)) == 0)
683 return 0;
684 return id[ATA_ID_COMMAND_SET_1] & (1 << 10);
685 }
686
687 static inline int ata_id_has_wcache(const u16 *id)
688 {
689 /* Yes children, word 83 valid bits cover word 82 data */
690 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
691 return 0;
692 return id[ATA_ID_COMMAND_SET_1] & (1 << 5);
693 }
694
695 static inline int ata_id_has_pm(const u16 *id)
696 {
697 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
698 return 0;
699 return id[ATA_ID_COMMAND_SET_1] & (1 << 3);
700 }
701
702 static inline int ata_id_rahead_enabled(const u16 *id)
703 {
704 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
705 return 0;
706 return id[ATA_ID_CFS_ENABLE_1] & (1 << 6);
707 }
708
709 static inline int ata_id_wcache_enabled(const u16 *id)
710 {
711 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
712 return 0;
713 return id[ATA_ID_CFS_ENABLE_1] & (1 << 5);
714 }
715
716 /**
717 * ata_id_major_version - get ATA level of drive
718 * @id: Identify data
719 *
720 * Caveats:
721 * ATA-1 considers identify optional
722 * ATA-2 introduces mandatory identify
723 * ATA-3 introduces word 80 and accurate reporting
724 *
725 * The practical impact of this is that ata_id_major_version cannot
726 * reliably report on drives below ATA3.
727 */
728
729 static inline unsigned int ata_id_major_version(const u16 *id)
730 {
731 unsigned int mver;
732
733 if (id[ATA_ID_MAJOR_VER] == 0xFFFF)
734 return 0;
735
736 for (mver = 14; mver >= 1; mver--)
737 if (id[ATA_ID_MAJOR_VER] & (1 << mver))
738 break;
739 return mver;
740 }
741
742 static inline int ata_id_is_sata(const u16 *id)
743 {
744 /*
745 * See if word 93 is 0 AND drive is at least ATA-5 compatible
746 * verifying that word 80 by casting it to a signed type --
747 * this trick allows us to filter out the reserved values of
748 * 0x0000 and 0xffff along with the earlier ATA revisions...
749 */
750 if (id[ATA_ID_HW_CONFIG] == 0 && (short)id[ATA_ID_MAJOR_VER] >= 0x0020)
751 return 1;
752 return 0;
753 }
754
755 static inline int ata_id_has_tpm(const u16 *id)
756 {
757 /* The TPM bits are only valid on ATA8 */
758 if (ata_id_major_version(id) < 8)
759 return 0;
760 if ((id[48] & 0xC000) != 0x4000)
761 return 0;
762 return id[48] & (1 << 0);
763 }
764
765 static inline int ata_id_has_dword_io(const u16 *id)
766 {
767 /* ATA 8 reuses this flag for "trusted" computing */
768 if (ata_id_major_version(id) > 7)
769 return 0;
770 if (id[ATA_ID_DWORD_IO] & (1 << 0))
771 return 1;
772 return 0;
773 }
774
775 static inline int ata_id_has_unload(const u16 *id)
776 {
777 if (ata_id_major_version(id) >= 7 &&
778 (id[ATA_ID_CFSSE] & 0xC000) == 0x4000 &&
779 id[ATA_ID_CFSSE] & (1 << 13))
780 return 1;
781 return 0;
782 }
783
784 static inline int ata_id_form_factor(const u16 *id)
785 {
786 u16 val = id[168];
787
788 if (ata_id_major_version(id) < 7 || val == 0 || val == 0xffff)
789 return 0;
790
791 val &= 0xf;
792
793 if (val > 5)
794 return 0;
795
796 return val;
797 }
798
799 static inline int ata_id_rotation_rate(const u16 *id)
800 {
801 u16 val = id[217];
802
803 if (ata_id_major_version(id) < 7 || val == 0 || val == 0xffff)
804 return 0;
805
806 if (val > 1 && val < 0x401)
807 return 0;
808
809 return val;
810 }
811
812 static inline int ata_id_has_trim(const u16 *id)
813 {
814 if (ata_id_major_version(id) >= 7 &&
815 (id[ATA_ID_DATA_SET_MGMT] & 1))
816 return 1;
817 return 0;
818 }
819
820 static inline int ata_id_has_zero_after_trim(const u16 *id)
821 {
822 /* DSM supported, deterministic read, and read zero after trim set */
823 if (ata_id_has_trim(id) &&
824 (id[ATA_ID_ADDITIONAL_SUPP] & 0x4020) == 0x4020)
825 return 1;
826
827 return 0;
828 }
829
830 static inline int ata_id_current_chs_valid(const u16 *id)
831 {
832 /* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command
833 has not been issued to the device then the values of
834 id[ATA_ID_CUR_CYLS] to id[ATA_ID_CUR_SECTORS] are vendor specific. */
835 return (id[ATA_ID_FIELD_VALID] & 1) && /* Current translation valid */
836 id[ATA_ID_CUR_CYLS] && /* cylinders in current translation */
837 id[ATA_ID_CUR_HEADS] && /* heads in current translation */
838 id[ATA_ID_CUR_HEADS] <= 16 &&
839 id[ATA_ID_CUR_SECTORS]; /* sectors in current translation */
840 }
841
842 static inline int ata_id_is_cfa(const u16 *id)
843 {
844 if (id[ATA_ID_CONFIG] == 0x848A) /* Traditional CF */
845 return 1;
846 /*
847 * CF specs don't require specific value in the word 0 anymore and yet
848 * they forbid to report the ATA version in the word 80 and require the
849 * CFA feature set support to be indicated in the word 83 in this case.
850 * Unfortunately, some cards only follow either of this requirements,
851 * and while those that don't indicate CFA feature support need some
852 * sort of quirk list, it seems impractical for the ones that do...
853 */
854 if ((id[ATA_ID_COMMAND_SET_2] & 0xC004) == 0x4004)
855 return 1;
856 return 0;
857 }
858
859 static inline int ata_id_is_ssd(const u16 *id)
860 {
861 return id[ATA_ID_ROT_SPEED] == 0x01;
862 }
863
864 static inline int ata_id_pio_need_iordy(const u16 *id, const u8 pio)
865 {
866 /* CF spec. r4.1 Table 22 says no IORDY on PIO5 and PIO6. */
867 if (pio > 4 && ata_id_is_cfa(id))
868 return 0;
869 /* For PIO3 and higher it is mandatory. */
870 if (pio > 2)
871 return 1;
872 /* Turn it on when possible. */
873 if (ata_id_has_iordy(id))
874 return 1;
875 return 0;
876 }
877
878 static inline int ata_drive_40wire(const u16 *dev_id)
879 {
880 if (ata_id_is_sata(dev_id))
881 return 0; /* SATA */
882 if ((dev_id[ATA_ID_HW_CONFIG] & 0xE000) == 0x6000)
883 return 0; /* 80 wire */
884 return 1;
885 }
886
887 static inline int ata_drive_40wire_relaxed(const u16 *dev_id)
888 {
889 if ((dev_id[ATA_ID_HW_CONFIG] & 0x2000) == 0x2000)
890 return 0; /* 80 wire */
891 return 1;
892 }
893
894 static inline int atapi_cdb_len(const u16 *dev_id)
895 {
896 u16 tmp = dev_id[ATA_ID_CONFIG] & 0x3;
897 switch (tmp) {
898 case 0: return 12;
899 case 1: return 16;
900 default: return -1;
901 }
902 }
903
904 static inline int atapi_command_packet_set(const u16 *dev_id)
905 {
906 return (dev_id[ATA_ID_CONFIG] >> 8) & 0x1f;
907 }
908
909 static inline int atapi_id_dmadir(const u16 *dev_id)
910 {
911 return ata_id_major_version(dev_id) >= 7 && (dev_id[62] & 0x8000);
912 }
913
914 /*
915 * ata_id_is_lba_capacity_ok() performs a sanity check on
916 * the claimed LBA capacity value for the device.
917 *
918 * Returns 1 if LBA capacity looks sensible, 0 otherwise.
919 *
920 * It is called only once for each device.
921 */
922 static inline int ata_id_is_lba_capacity_ok(u16 *id)
923 {
924 unsigned long lba_sects, chs_sects, head, tail;
925
926 /* No non-LBA info .. so valid! */
927 if (id[ATA_ID_CYLS] == 0)
928 return 1;
929
930 lba_sects = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
931
932 /*
933 * The ATA spec tells large drives to return
934 * C/H/S = 16383/16/63 independent of their size.
935 * Some drives can be jumpered to use 15 heads instead of 16.
936 * Some drives can be jumpered to use 4092 cyls instead of 16383.
937 */
938 if ((id[ATA_ID_CYLS] == 16383 ||
939 (id[ATA_ID_CYLS] == 4092 && id[ATA_ID_CUR_CYLS] == 16383)) &&
940 id[ATA_ID_SECTORS] == 63 &&
941 (id[ATA_ID_HEADS] == 15 || id[ATA_ID_HEADS] == 16) &&
942 (lba_sects >= 16383 * 63 * id[ATA_ID_HEADS]))
943 return 1;
944
945 chs_sects = id[ATA_ID_CYLS] * id[ATA_ID_HEADS] * id[ATA_ID_SECTORS];
946
947 /* perform a rough sanity check on lba_sects: within 10% is OK */
948 if (lba_sects - chs_sects < chs_sects/10)
949 return 1;
950
951 /* some drives have the word order reversed */
952 head = (lba_sects >> 16) & 0xffff;
953 tail = lba_sects & 0xffff;
954 lba_sects = head | (tail << 16);
955
956 if (lba_sects - chs_sects < chs_sects/10) {
957 *(__le32 *)&id[ATA_ID_LBA_CAPACITY] = __cpu_to_le32(lba_sects);
958 return 1; /* LBA capacity is (now) good */
959 }
960
961 return 0; /* LBA capacity value may be bad */
962 }
963
964 static inline void ata_id_to_hd_driveid(u16 *id)
965 {
966 #ifdef __BIG_ENDIAN
967 /* accessed in struct hd_driveid as 8-bit values */
968 id[ATA_ID_MAX_MULTSECT] = __cpu_to_le16(id[ATA_ID_MAX_MULTSECT]);
969 id[ATA_ID_CAPABILITY] = __cpu_to_le16(id[ATA_ID_CAPABILITY]);
970 id[ATA_ID_OLD_PIO_MODES] = __cpu_to_le16(id[ATA_ID_OLD_PIO_MODES]);
971 id[ATA_ID_OLD_DMA_MODES] = __cpu_to_le16(id[ATA_ID_OLD_DMA_MODES]);
972 id[ATA_ID_MULTSECT] = __cpu_to_le16(id[ATA_ID_MULTSECT]);
973
974 /* as 32-bit values */
975 *(u32 *)&id[ATA_ID_LBA_CAPACITY] = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
976 *(u32 *)&id[ATA_ID_SPG] = ata_id_u32(id, ATA_ID_SPG);
977
978 /* as 64-bit value */
979 *(u64 *)&id[ATA_ID_LBA_CAPACITY_2] =
980 ata_id_u64(id, ATA_ID_LBA_CAPACITY_2);
981 #endif
982 }
983
984 /*
985 * Write LBA Range Entries to the buffer that will cover the extent from
986 * sector to sector + count. This is used for TRIM and for ADD LBA(S)
987 * TO NV CACHE PINNED SET.
988 */
989 static inline unsigned ata_set_lba_range_entries(void *_buffer,
990 unsigned buf_size, u64 sector, unsigned long count)
991 {
992 __le64 *buffer = _buffer;
993 unsigned i = 0, used_bytes;
994
995 while (i < buf_size / 8 ) { /* 6-byte LBA + 2-byte range per entry */
996 u64 entry = sector |
997 ((u64)(count > 0xffff ? 0xffff : count) << 48);
998 buffer[i++] = __cpu_to_le64(entry);
999 if (count <= 0xffff)
1000 break;
1001 count -= 0xffff;
1002 sector += 0xffff;
1003 }
1004
1005 used_bytes = ALIGN(i * 8, 512);
1006 memset(buffer + i, 0, used_bytes - i * 8);
1007 return used_bytes;
1008 }
1009
1010 static inline int is_multi_taskfile(struct ata_taskfile *tf)
1011 {
1012 return (tf->command == ATA_CMD_READ_MULTI) ||
1013 (tf->command == ATA_CMD_WRITE_MULTI) ||
1014 (tf->command == ATA_CMD_READ_MULTI_EXT) ||
1015 (tf->command == ATA_CMD_WRITE_MULTI_EXT) ||
1016 (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT);
1017 }
1018
1019 static inline int ata_ok(u8 status)
1020 {
1021 return ((status & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ | ATA_ERR))
1022 == ATA_DRDY);
1023 }
1024
1025 static inline int lba_28_ok(u64 block, u32 n_block)
1026 {
1027 /* check the ending block number */
1028 return ((block + n_block) < ((u64)1 << 28)) && (n_block <= 256);
1029 }
1030
1031 static inline int lba_48_ok(u64 block, u32 n_block)
1032 {
1033 /* check the ending block number */
1034 return ((block + n_block - 1) < ((u64)1 << 48)) && (n_block <= 65536);
1035 }
1036
1037 #define sata_pmp_gscr_vendor(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] & 0xffff)
1038 #define sata_pmp_gscr_devid(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] >> 16)
1039 #define sata_pmp_gscr_rev(gscr) (((gscr)[SATA_PMP_GSCR_REV] >> 8) & 0xff)
1040 #define sata_pmp_gscr_ports(gscr) ((gscr)[SATA_PMP_GSCR_PORT_INFO] & 0xf)
1041
1042 #endif /* __LINUX_ATA_H__ */
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