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Merge branch 'mini2440-dev-unlikely' into mini2440-dev
[linux-2.6/mini2440.git] / include / linux / ata.h
blob4fb357312b3bf4b4484879fa5ede0942e39fb15f
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_QUEUE_DEPTH = 75,
79 ATA_ID_MAJOR_VER = 80,
80 ATA_ID_COMMAND_SET_1 = 82,
81 ATA_ID_COMMAND_SET_2 = 83,
82 ATA_ID_CFSSE = 84,
83 ATA_ID_CFS_ENABLE_1 = 85,
84 ATA_ID_CFS_ENABLE_2 = 86,
85 ATA_ID_CSF_DEFAULT = 87,
86 ATA_ID_UDMA_MODES = 88,
87 ATA_ID_HW_CONFIG = 93,
88 ATA_ID_SPG = 98,
89 ATA_ID_LBA_CAPACITY_2 = 100,
90 ATA_ID_LAST_LUN = 126,
91 ATA_ID_DLF = 128,
92 ATA_ID_CSFO = 129,
93 ATA_ID_CFA_POWER = 160,
94 ATA_ID_CFA_KEY_MGMT = 162,
95 ATA_ID_CFA_MODES = 163,
96 ATA_ID_DATA_SET_MGMT = 169,
97 ATA_ID_ROT_SPEED = 217,
98 ATA_ID_PIO4 = (1 << 1),
99
100 ATA_ID_SERNO_LEN = 20,
101 ATA_ID_FW_REV_LEN = 8,
102 ATA_ID_PROD_LEN = 40,
103
104 ATA_PCI_CTL_OFS = 2,
105
106 ATA_PIO0 = (1 << 0),
107 ATA_PIO1 = ATA_PIO0 | (1 << 1),
108 ATA_PIO2 = ATA_PIO1 | (1 << 2),
109 ATA_PIO3 = ATA_PIO2 | (1 << 3),
110 ATA_PIO4 = ATA_PIO3 | (1 << 4),
111 ATA_PIO5 = ATA_PIO4 | (1 << 5),
112 ATA_PIO6 = ATA_PIO5 | (1 << 6),
113
114 ATA_PIO4_ONLY = (1 << 4),
115
116 ATA_SWDMA0 = (1 << 0),
117 ATA_SWDMA1 = ATA_SWDMA0 | (1 << 1),
118 ATA_SWDMA2 = ATA_SWDMA1 | (1 << 2),
119
120 ATA_SWDMA2_ONLY = (1 << 2),
121
122 ATA_MWDMA0 = (1 << 0),
123 ATA_MWDMA1 = ATA_MWDMA0 | (1 << 1),
124 ATA_MWDMA2 = ATA_MWDMA1 | (1 << 2),
125 ATA_MWDMA3 = ATA_MWDMA2 | (1 << 3),
126 ATA_MWDMA4 = ATA_MWDMA3 | (1 << 4),
127
128 ATA_MWDMA12_ONLY = (1 << 1) | (1 << 2),
129 ATA_MWDMA2_ONLY = (1 << 2),
130
131 ATA_UDMA0 = (1 << 0),
132 ATA_UDMA1 = ATA_UDMA0 | (1 << 1),
133 ATA_UDMA2 = ATA_UDMA1 | (1 << 2),
134 ATA_UDMA3 = ATA_UDMA2 | (1 << 3),
135 ATA_UDMA4 = ATA_UDMA3 | (1 << 4),
136 ATA_UDMA5 = ATA_UDMA4 | (1 << 5),
137 ATA_UDMA6 = ATA_UDMA5 | (1 << 6),
138 ATA_UDMA7 = ATA_UDMA6 | (1 << 7),
139 /* ATA_UDMA7 is just for completeness... doesn't exist (yet?). */
140
141 ATA_UDMA24_ONLY = (1 << 2) | (1 << 4),
142
143 ATA_UDMA_MASK_40C = ATA_UDMA2, /* udma0-2 */
144
145 /* DMA-related */
146 ATA_PRD_SZ = 8,
147 ATA_PRD_TBL_SZ = (ATA_MAX_PRD * ATA_PRD_SZ),
148 ATA_PRD_EOT = (1 << 31), /* end-of-table flag */
149
150 ATA_DMA_TABLE_OFS = 4,
151 ATA_DMA_STATUS = 2,
152 ATA_DMA_CMD = 0,
153 ATA_DMA_WR = (1 << 3),
154 ATA_DMA_START = (1 << 0),
155 ATA_DMA_INTR = (1 << 2),
156 ATA_DMA_ERR = (1 << 1),
157 ATA_DMA_ACTIVE = (1 << 0),
158
159 /* bits in ATA command block registers */
160 ATA_HOB = (1 << 7), /* LBA48 selector */
161 ATA_NIEN = (1 << 1), /* disable-irq flag */
162 ATA_LBA = (1 << 6), /* LBA28 selector */
163 ATA_DEV1 = (1 << 4), /* Select Device 1 (slave) */
164 ATA_DEVICE_OBS = (1 << 7) | (1 << 5), /* obs bits in dev reg */
165 ATA_DEVCTL_OBS = (1 << 3), /* obsolete bit in devctl reg */
166 ATA_BUSY = (1 << 7), /* BSY status bit */
167 ATA_DRDY = (1 << 6), /* device ready */
168 ATA_DF = (1 << 5), /* device fault */
169 ATA_DSC = (1 << 4), /* drive seek complete */
170 ATA_DRQ = (1 << 3), /* data request i/o */
171 ATA_CORR = (1 << 2), /* corrected data error */
172 ATA_IDX = (1 << 1), /* index */
173 ATA_ERR = (1 << 0), /* have an error */
174 ATA_SRST = (1 << 2), /* software reset */
175 ATA_ICRC = (1 << 7), /* interface CRC error */
176 ATA_BBK = ATA_ICRC, /* pre-EIDE: block marked bad */
177 ATA_UNC = (1 << 6), /* uncorrectable media error */
178 ATA_MC = (1 << 5), /* media changed */
179 ATA_IDNF = (1 << 4), /* ID not found */
180 ATA_MCR = (1 << 3), /* media change requested */
181 ATA_ABORTED = (1 << 2), /* command aborted */
182 ATA_TRK0NF = (1 << 1), /* track 0 not found */
183 ATA_AMNF = (1 << 0), /* address mark not found */
184 ATAPI_LFS = 0xF0, /* last failed sense */
185 ATAPI_EOM = ATA_TRK0NF, /* end of media */
186 ATAPI_ILI = ATA_AMNF, /* illegal length indication */
187 ATAPI_IO = (1 << 1),
188 ATAPI_COD = (1 << 0),
189
190 /* ATA command block registers */
191 ATA_REG_DATA = 0x00,
192 ATA_REG_ERR = 0x01,
193 ATA_REG_NSECT = 0x02,
194 ATA_REG_LBAL = 0x03,
195 ATA_REG_LBAM = 0x04,
196 ATA_REG_LBAH = 0x05,
197 ATA_REG_DEVICE = 0x06,
198 ATA_REG_STATUS = 0x07,
199
200 ATA_REG_FEATURE = ATA_REG_ERR, /* and their aliases */
201 ATA_REG_CMD = ATA_REG_STATUS,
202 ATA_REG_BYTEL = ATA_REG_LBAM,
203 ATA_REG_BYTEH = ATA_REG_LBAH,
204 ATA_REG_DEVSEL = ATA_REG_DEVICE,
205 ATA_REG_IRQ = ATA_REG_NSECT,
206
207 /* ATA device commands */
208 ATA_CMD_DEV_RESET = 0x08, /* ATAPI device reset */
209 ATA_CMD_CHK_POWER = 0xE5, /* check power mode */
210 ATA_CMD_STANDBY = 0xE2, /* place in standby power mode */
211 ATA_CMD_IDLE = 0xE3, /* place in idle power mode */
212 ATA_CMD_EDD = 0x90, /* execute device diagnostic */
213 ATA_CMD_DOWNLOAD_MICRO = 0x92,
214 ATA_CMD_NOP = 0x00,
215 ATA_CMD_FLUSH = 0xE7,
216 ATA_CMD_FLUSH_EXT = 0xEA,
217 ATA_CMD_ID_ATA = 0xEC,
218 ATA_CMD_ID_ATAPI = 0xA1,
219 ATA_CMD_SERVICE = 0xA2,
220 ATA_CMD_READ = 0xC8,
221 ATA_CMD_READ_EXT = 0x25,
222 ATA_CMD_READ_QUEUED = 0x26,
223 ATA_CMD_READ_STREAM_EXT = 0x2B,
224 ATA_CMD_READ_STREAM_DMA_EXT = 0x2A,
225 ATA_CMD_WRITE = 0xCA,
226 ATA_CMD_WRITE_EXT = 0x35,
227 ATA_CMD_WRITE_QUEUED = 0x36,
228 ATA_CMD_WRITE_STREAM_EXT = 0x3B,
229 ATA_CMD_WRITE_STREAM_DMA_EXT = 0x3A,
230 ATA_CMD_WRITE_FUA_EXT = 0x3D,
231 ATA_CMD_WRITE_QUEUED_FUA_EXT = 0x3E,
232 ATA_CMD_FPDMA_READ = 0x60,
233 ATA_CMD_FPDMA_WRITE = 0x61,
234 ATA_CMD_PIO_READ = 0x20,
235 ATA_CMD_PIO_READ_EXT = 0x24,
236 ATA_CMD_PIO_WRITE = 0x30,
237 ATA_CMD_PIO_WRITE_EXT = 0x34,
238 ATA_CMD_READ_MULTI = 0xC4,
239 ATA_CMD_READ_MULTI_EXT = 0x29,
240 ATA_CMD_WRITE_MULTI = 0xC5,
241 ATA_CMD_WRITE_MULTI_EXT = 0x39,
242 ATA_CMD_WRITE_MULTI_FUA_EXT = 0xCE,
243 ATA_CMD_SET_FEATURES = 0xEF,
244 ATA_CMD_SET_MULTI = 0xC6,
245 ATA_CMD_PACKET = 0xA0,
246 ATA_CMD_VERIFY = 0x40,
247 ATA_CMD_VERIFY_EXT = 0x42,
248 ATA_CMD_WRITE_UNCORR_EXT = 0x45,
249 ATA_CMD_STANDBYNOW1 = 0xE0,
250 ATA_CMD_IDLEIMMEDIATE = 0xE1,
251 ATA_CMD_SLEEP = 0xE6,
252 ATA_CMD_INIT_DEV_PARAMS = 0x91,
253 ATA_CMD_READ_NATIVE_MAX = 0xF8,
254 ATA_CMD_READ_NATIVE_MAX_EXT = 0x27,
255 ATA_CMD_SET_MAX = 0xF9,
256 ATA_CMD_SET_MAX_EXT = 0x37,
257 ATA_CMD_READ_LOG_EXT = 0x2F,
258 ATA_CMD_WRITE_LOG_EXT = 0x3F,
259 ATA_CMD_READ_LOG_DMA_EXT = 0x47,
260 ATA_CMD_WRITE_LOG_DMA_EXT = 0x57,
261 ATA_CMD_TRUSTED_RCV = 0x5C,
262 ATA_CMD_TRUSTED_RCV_DMA = 0x5D,
263 ATA_CMD_TRUSTED_SND = 0x5E,
264 ATA_CMD_TRUSTED_SND_DMA = 0x5F,
265 ATA_CMD_PMP_READ = 0xE4,
266 ATA_CMD_PMP_WRITE = 0xE8,
267 ATA_CMD_CONF_OVERLAY = 0xB1,
268 ATA_CMD_SEC_SET_PASS = 0xF1,
269 ATA_CMD_SEC_UNLOCK = 0xF2,
270 ATA_CMD_SEC_ERASE_PREP = 0xF3,
271 ATA_CMD_SEC_ERASE_UNIT = 0xF4,
272 ATA_CMD_SEC_FREEZE_LOCK = 0xF5,
273 ATA_CMD_SEC_DISABLE_PASS = 0xF6,
274 ATA_CMD_CONFIG_STREAM = 0x51,
275 ATA_CMD_SMART = 0xB0,
276 ATA_CMD_MEDIA_LOCK = 0xDE,
277 ATA_CMD_MEDIA_UNLOCK = 0xDF,
278 ATA_CMD_DSM = 0x06,
279 ATA_CMD_CHK_MED_CRD_TYP = 0xD1,
280 ATA_CMD_CFA_REQ_EXT_ERR = 0x03,
281 ATA_CMD_CFA_WRITE_NE = 0x38,
282 ATA_CMD_CFA_TRANS_SECT = 0x87,
283 ATA_CMD_CFA_ERASE = 0xC0,
284 ATA_CMD_CFA_WRITE_MULT_NE = 0xCD,
285 /* marked obsolete in the ATA/ATAPI-7 spec */
286 ATA_CMD_RESTORE = 0x10,
287
288 /* READ_LOG_EXT pages */
289 ATA_LOG_SATA_NCQ = 0x10,
290
291 /* READ/WRITE LONG (obsolete) */
292 ATA_CMD_READ_LONG = 0x22,
293 ATA_CMD_READ_LONG_ONCE = 0x23,
294 ATA_CMD_WRITE_LONG = 0x32,
295 ATA_CMD_WRITE_LONG_ONCE = 0x33,
296
297 /* SETFEATURES stuff */
298 SETFEATURES_XFER = 0x03,
299 XFER_UDMA_7 = 0x47,
300 XFER_UDMA_6 = 0x46,
301 XFER_UDMA_5 = 0x45,
302 XFER_UDMA_4 = 0x44,
303 XFER_UDMA_3 = 0x43,
304 XFER_UDMA_2 = 0x42,
305 XFER_UDMA_1 = 0x41,
306 XFER_UDMA_0 = 0x40,
307 XFER_MW_DMA_4 = 0x24, /* CFA only */
308 XFER_MW_DMA_3 = 0x23, /* CFA only */
309 XFER_MW_DMA_2 = 0x22,
310 XFER_MW_DMA_1 = 0x21,
311 XFER_MW_DMA_0 = 0x20,
312 XFER_SW_DMA_2 = 0x12,
313 XFER_SW_DMA_1 = 0x11,
314 XFER_SW_DMA_0 = 0x10,
315 XFER_PIO_6 = 0x0E, /* CFA only */
316 XFER_PIO_5 = 0x0D, /* CFA only */
317 XFER_PIO_4 = 0x0C,
318 XFER_PIO_3 = 0x0B,
319 XFER_PIO_2 = 0x0A,
320 XFER_PIO_1 = 0x09,
321 XFER_PIO_0 = 0x08,
322 XFER_PIO_SLOW = 0x00,
323
324 SETFEATURES_WC_ON = 0x02, /* Enable write cache */
325 SETFEATURES_WC_OFF = 0x82, /* Disable write cache */
326
327 /* Enable/Disable Automatic Acoustic Management */
328 SETFEATURES_AAM_ON = 0x42,
329 SETFEATURES_AAM_OFF = 0xC2,
330
331 SETFEATURES_SPINUP = 0x07, /* Spin-up drive */
332
333 SETFEATURES_SATA_ENABLE = 0x10, /* Enable use of SATA feature */
334 SETFEATURES_SATA_DISABLE = 0x90, /* Disable use of SATA feature */
335
336 /* SETFEATURE Sector counts for SATA features */
337 SATA_FPDMA_OFFSET = 0x01, /* FPDMA non-zero buffer offsets */
338 SATA_FPDMA_AA = 0x02, /* FPDMA Setup FIS Auto-Activate */
339 SATA_DIPM = 0x03, /* Device Initiated Power Management */
340 SATA_FPDMA_IN_ORDER = 0x04, /* FPDMA in-order data delivery */
341 SATA_AN = 0x05, /* Asynchronous Notification */
342 SATA_SSP = 0x06, /* Software Settings Preservation */
343
344 /* feature values for SET_MAX */
345 ATA_SET_MAX_ADDR = 0x00,
346 ATA_SET_MAX_PASSWD = 0x01,
347 ATA_SET_MAX_LOCK = 0x02,
348 ATA_SET_MAX_UNLOCK = 0x03,
349 ATA_SET_MAX_FREEZE_LOCK = 0x04,
350
351 /* feature values for DEVICE CONFIGURATION OVERLAY */
352 ATA_DCO_RESTORE = 0xC0,
353 ATA_DCO_FREEZE_LOCK = 0xC1,
354 ATA_DCO_IDENTIFY = 0xC2,
355 ATA_DCO_SET = 0xC3,
356
357 /* feature values for SMART */
358 ATA_SMART_ENABLE = 0xD8,
359 ATA_SMART_READ_VALUES = 0xD0,
360 ATA_SMART_READ_THRESHOLDS = 0xD1,
361
362 /* feature values for Data Set Management */
363 ATA_DSM_TRIM = 0x01,
364
365 /* password used in LBA Mid / LBA High for executing SMART commands */
366 ATA_SMART_LBAM_PASS = 0x4F,
367 ATA_SMART_LBAH_PASS = 0xC2,
368
369 /* ATAPI stuff */
370 ATAPI_PKT_DMA = (1 << 0),
371 ATAPI_DMADIR = (1 << 2), /* ATAPI data dir:
372 0=to device, 1=to host */
373 ATAPI_CDB_LEN = 16,
374
375 /* PMP stuff */
376 SATA_PMP_MAX_PORTS = 15,
377 SATA_PMP_CTRL_PORT = 15,
378
379 SATA_PMP_GSCR_DWORDS = 128,
380 SATA_PMP_GSCR_PROD_ID = 0,
381 SATA_PMP_GSCR_REV = 1,
382 SATA_PMP_GSCR_PORT_INFO = 2,
383 SATA_PMP_GSCR_ERROR = 32,
384 SATA_PMP_GSCR_ERROR_EN = 33,
385 SATA_PMP_GSCR_FEAT = 64,
386 SATA_PMP_GSCR_FEAT_EN = 96,
387
388 SATA_PMP_PSCR_STATUS = 0,
389 SATA_PMP_PSCR_ERROR = 1,
390 SATA_PMP_PSCR_CONTROL = 2,
391
392 SATA_PMP_FEAT_BIST = (1 << 0),
393 SATA_PMP_FEAT_PMREQ = (1 << 1),
394 SATA_PMP_FEAT_DYNSSC = (1 << 2),
395 SATA_PMP_FEAT_NOTIFY = (1 << 3),
396
397 /* cable types */
398 ATA_CBL_NONE = 0,
399 ATA_CBL_PATA40 = 1,
400 ATA_CBL_PATA80 = 2,
401 ATA_CBL_PATA40_SHORT = 3, /* 40 wire cable to high UDMA spec */
402 ATA_CBL_PATA_UNK = 4, /* don't know, maybe 80c? */
403 ATA_CBL_PATA_IGN = 5, /* don't know, ignore cable handling */
404 ATA_CBL_SATA = 6,
405
406 /* SATA Status and Control Registers */
407 SCR_STATUS = 0,
408 SCR_ERROR = 1,
409 SCR_CONTROL = 2,
410 SCR_ACTIVE = 3,
411 SCR_NOTIFICATION = 4,
412
413 /* SError bits */
414 SERR_DATA_RECOVERED = (1 << 0), /* recovered data error */
415 SERR_COMM_RECOVERED = (1 << 1), /* recovered comm failure */
416 SERR_DATA = (1 << 8), /* unrecovered data error */
417 SERR_PERSISTENT = (1 << 9), /* persistent data/comm error */
418 SERR_PROTOCOL = (1 << 10), /* protocol violation */
419 SERR_INTERNAL = (1 << 11), /* host internal error */
420 SERR_PHYRDY_CHG = (1 << 16), /* PHY RDY changed */
421 SERR_PHY_INT_ERR = (1 << 17), /* PHY internal error */
422 SERR_COMM_WAKE = (1 << 18), /* Comm wake */
423 SERR_10B_8B_ERR = (1 << 19), /* 10b to 8b decode error */
424 SERR_DISPARITY = (1 << 20), /* Disparity */
425 SERR_CRC = (1 << 21), /* CRC error */
426 SERR_HANDSHAKE = (1 << 22), /* Handshake error */
427 SERR_LINK_SEQ_ERR = (1 << 23), /* Link sequence error */
428 SERR_TRANS_ST_ERROR = (1 << 24), /* Transport state trans. error */
429 SERR_UNRECOG_FIS = (1 << 25), /* Unrecognized FIS */
430 SERR_DEV_XCHG = (1 << 26), /* device exchanged */
431
432 /* struct ata_taskfile flags */
433 ATA_TFLAG_LBA48 = (1 << 0), /* enable 48-bit LBA and "HOB" */
434 ATA_TFLAG_ISADDR = (1 << 1), /* enable r/w to nsect/lba regs */
435 ATA_TFLAG_DEVICE = (1 << 2), /* enable r/w to device reg */
436 ATA_TFLAG_WRITE = (1 << 3), /* data dir: host->dev==1 (write) */
437 ATA_TFLAG_LBA = (1 << 4), /* enable LBA */
438 ATA_TFLAG_FUA = (1 << 5), /* enable FUA */
439 ATA_TFLAG_POLLING = (1 << 6), /* set nIEN to 1 and use polling */
440
441 /* protocol flags */
442 ATA_PROT_FLAG_PIO = (1 << 0), /* is PIO */
443 ATA_PROT_FLAG_DMA = (1 << 1), /* is DMA */
444 ATA_PROT_FLAG_DATA = ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA,
445 ATA_PROT_FLAG_NCQ = (1 << 2), /* is NCQ */
446 ATA_PROT_FLAG_ATAPI = (1 << 3), /* is ATAPI */
447 };
448
449 enum ata_tf_protocols {
450 /* ATA taskfile protocols */
451 ATA_PROT_UNKNOWN, /* unknown/invalid */
452 ATA_PROT_NODATA, /* no data */
453 ATA_PROT_PIO, /* PIO data xfer */
454 ATA_PROT_DMA, /* DMA */
455 ATA_PROT_NCQ, /* NCQ */
456 ATAPI_PROT_NODATA, /* packet command, no data */
457 ATAPI_PROT_PIO, /* packet command, PIO data xfer*/
458 ATAPI_PROT_DMA, /* packet command with special DMA sauce */
459 };
460
461 enum ata_ioctls {
462 ATA_IOC_GET_IO32 = 0x309,
463 ATA_IOC_SET_IO32 = 0x324,
464 };
465
466 /* core structures */
467
468 struct ata_prd {
469 __le32 addr;
470 __le32 flags_len;
471 };
472
473 struct ata_taskfile {
474 unsigned long flags; /* ATA_TFLAG_xxx */
475 u8 protocol; /* ATA_PROT_xxx */
476
477 u8 ctl; /* control reg */
478
479 u8 hob_feature; /* additional data */
480 u8 hob_nsect; /* to support LBA48 */
481 u8 hob_lbal;
482 u8 hob_lbam;
483 u8 hob_lbah;
484
485 u8 feature;
486 u8 nsect;
487 u8 lbal;
488 u8 lbam;
489 u8 lbah;
490
491 u8 device;
492
493 u8 command; /* IO operation */
494 };
495
496 /*
497 * protocol tests
498 */
499 static inline unsigned int ata_prot_flags(u8 prot)
500 {
501 switch (prot) {
502 case ATA_PROT_NODATA:
503 return 0;
504 case ATA_PROT_PIO:
505 return ATA_PROT_FLAG_PIO;
506 case ATA_PROT_DMA:
507 return ATA_PROT_FLAG_DMA;
508 case ATA_PROT_NCQ:
509 return ATA_PROT_FLAG_DMA | ATA_PROT_FLAG_NCQ;
510 case ATAPI_PROT_NODATA:
511 return ATA_PROT_FLAG_ATAPI;
512 case ATAPI_PROT_PIO:
513 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_PIO;
514 case ATAPI_PROT_DMA:
515 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_DMA;
516 }
517 return 0;
518 }
519
520 static inline int ata_is_atapi(u8 prot)
521 {
522 return ata_prot_flags(prot) & ATA_PROT_FLAG_ATAPI;
523 }
524
525 static inline int ata_is_nodata(u8 prot)
526 {
527 return !(ata_prot_flags(prot) & ATA_PROT_FLAG_DATA);
528 }
529
530 static inline int ata_is_pio(u8 prot)
531 {
532 return ata_prot_flags(prot) & ATA_PROT_FLAG_PIO;
533 }
534
535 static inline int ata_is_dma(u8 prot)
536 {
537 return ata_prot_flags(prot) & ATA_PROT_FLAG_DMA;
538 }
539
540 static inline int ata_is_ncq(u8 prot)
541 {
542 return ata_prot_flags(prot) & ATA_PROT_FLAG_NCQ;
543 }
544
545 static inline int ata_is_data(u8 prot)
546 {
547 return ata_prot_flags(prot) & ATA_PROT_FLAG_DATA;
548 }
549
550 /*
551 * id tests
552 */
553 #define ata_id_is_ata(id) (((id)[ATA_ID_CONFIG] & (1 << 15)) == 0)
554 #define ata_id_has_lba(id) ((id)[ATA_ID_CAPABILITY] & (1 << 9))
555 #define ata_id_has_dma(id) ((id)[ATA_ID_CAPABILITY] & (1 << 8))
556 #define ata_id_has_ncq(id) ((id)[76] & (1 << 8))
557 #define ata_id_queue_depth(id) (((id)[ATA_ID_QUEUE_DEPTH] & 0x1f) + 1)
558 #define ata_id_removeable(id) ((id)[ATA_ID_CONFIG] & (1 << 7))
559 #define ata_id_has_atapi_AN(id) \
560 ( (((id)[76] != 0x0000) && ((id)[76] != 0xffff)) && \
561 ((id)[78] & (1 << 5)) )
562 #define ata_id_has_fpdma_aa(id) \
563 ( (((id)[76] != 0x0000) && ((id)[76] != 0xffff)) && \
564 ((id)[78] & (1 << 2)) )
565 #define ata_id_iordy_disable(id) ((id)[ATA_ID_CAPABILITY] & (1 << 10))
566 #define ata_id_has_iordy(id) ((id)[ATA_ID_CAPABILITY] & (1 << 11))
567 #define ata_id_u32(id,n) \
568 (((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)]))
569 #define ata_id_u64(id,n) \
570 ( ((u64) (id)[(n) + 3] << 48) | \
571 ((u64) (id)[(n) + 2] << 32) | \
572 ((u64) (id)[(n) + 1] << 16) | \
573 ((u64) (id)[(n) + 0]) )
574
575 #define ata_id_cdb_intr(id) (((id)[ATA_ID_CONFIG] & 0x60) == 0x20)
576
577 static inline bool ata_id_has_hipm(const u16 *id)
578 {
579 u16 val = id[76];
580
581 if (val == 0 || val == 0xffff)
582 return false;
583
584 return val & (1 << 9);
585 }
586
587 static inline bool ata_id_has_dipm(const u16 *id)
588 {
589 u16 val = id[78];
590
591 if (val == 0 || val == 0xffff)
592 return false;
593
594 return val & (1 << 3);
595 }
596
597
598 static inline int ata_id_has_fua(const u16 *id)
599 {
600 if ((id[ATA_ID_CFSSE] & 0xC000) != 0x4000)
601 return 0;
602 return id[ATA_ID_CFSSE] & (1 << 6);
603 }
604
605 static inline int ata_id_has_flush(const u16 *id)
606 {
607 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
608 return 0;
609 return id[ATA_ID_COMMAND_SET_2] & (1 << 12);
610 }
611
612 static inline int ata_id_flush_enabled(const u16 *id)
613 {
614 if (ata_id_has_flush(id) == 0)
615 return 0;
616 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
617 return 0;
618 return id[ATA_ID_CFS_ENABLE_2] & (1 << 12);
619 }
620
621 static inline int ata_id_has_flush_ext(const u16 *id)
622 {
623 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
624 return 0;
625 return id[ATA_ID_COMMAND_SET_2] & (1 << 13);
626 }
627
628 static inline int ata_id_flush_ext_enabled(const u16 *id)
629 {
630 if (ata_id_has_flush_ext(id) == 0)
631 return 0;
632 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
633 return 0;
634 /*
635 * some Maxtor disks have bit 13 defined incorrectly
636 * so check bit 10 too
637 */
638 return (id[ATA_ID_CFS_ENABLE_2] & 0x2400) == 0x2400;
639 }
640
641 static inline int ata_id_has_lba48(const u16 *id)
642 {
643 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
644 return 0;
645 if (!ata_id_u64(id, ATA_ID_LBA_CAPACITY_2))
646 return 0;
647 return id[ATA_ID_COMMAND_SET_2] & (1 << 10);
648 }
649
650 static inline int ata_id_lba48_enabled(const u16 *id)
651 {
652 if (ata_id_has_lba48(id) == 0)
653 return 0;
654 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
655 return 0;
656 return id[ATA_ID_CFS_ENABLE_2] & (1 << 10);
657 }
658
659 static inline int ata_id_hpa_enabled(const u16 *id)
660 {
661 /* Yes children, word 83 valid bits cover word 82 data */
662 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
663 return 0;
664 /* And 87 covers 85-87 */
665 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
666 return 0;
667 /* Check command sets enabled as well as supported */
668 if ((id[ATA_ID_CFS_ENABLE_1] & (1 << 10)) == 0)
669 return 0;
670 return id[ATA_ID_COMMAND_SET_1] & (1 << 10);
671 }
672
673 static inline int ata_id_has_wcache(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 return id[ATA_ID_COMMAND_SET_1] & (1 << 5);
679 }
680
681 static inline int ata_id_has_pm(const u16 *id)
682 {
683 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
684 return 0;
685 return id[ATA_ID_COMMAND_SET_1] & (1 << 3);
686 }
687
688 static inline int ata_id_rahead_enabled(const u16 *id)
689 {
690 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
691 return 0;
692 return id[ATA_ID_CFS_ENABLE_1] & (1 << 6);
693 }
694
695 static inline int ata_id_wcache_enabled(const u16 *id)
696 {
697 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
698 return 0;
699 return id[ATA_ID_CFS_ENABLE_1] & (1 << 5);
700 }
701
702 /**
703 * ata_id_major_version - get ATA level of drive
704 * @id: Identify data
705 *
706 * Caveats:
707 * ATA-1 considers identify optional
708 * ATA-2 introduces mandatory identify
709 * ATA-3 introduces word 80 and accurate reporting
710 *
711 * The practical impact of this is that ata_id_major_version cannot
712 * reliably report on drives below ATA3.
713 */
714
715 static inline unsigned int ata_id_major_version(const u16 *id)
716 {
717 unsigned int mver;
718
719 if (id[ATA_ID_MAJOR_VER] == 0xFFFF)
720 return 0;
721
722 for (mver = 14; mver >= 1; mver--)
723 if (id[ATA_ID_MAJOR_VER] & (1 << mver))
724 break;
725 return mver;
726 }
727
728 static inline int ata_id_is_sata(const u16 *id)
729 {
730 /*
731 * See if word 93 is 0 AND drive is at least ATA-5 compatible
732 * verifying that word 80 by casting it to a signed type --
733 * this trick allows us to filter out the reserved values of
734 * 0x0000 and 0xffff along with the earlier ATA revisions...
735 */
736 if (id[ATA_ID_HW_CONFIG] == 0 && (short)id[ATA_ID_MAJOR_VER] >= 0x0020)
737 return 1;
738 return 0;
739 }
740
741 static inline int ata_id_has_tpm(const u16 *id)
742 {
743 /* The TPM bits are only valid on ATA8 */
744 if (ata_id_major_version(id) < 8)
745 return 0;
746 if ((id[48] & 0xC000) != 0x4000)
747 return 0;
748 return id[48] & (1 << 0);
749 }
750
751 static inline int ata_id_has_dword_io(const u16 *id)
752 {
753 /* ATA 8 reuses this flag for "trusted" computing */
754 if (ata_id_major_version(id) > 7)
755 return 0;
756 if (id[ATA_ID_DWORD_IO] & (1 << 0))
757 return 1;
758 return 0;
759 }
760
761 static inline int ata_id_has_unload(const u16 *id)
762 {
763 if (ata_id_major_version(id) >= 7 &&
764 (id[ATA_ID_CFSSE] & 0xC000) == 0x4000 &&
765 id[ATA_ID_CFSSE] & (1 << 13))
766 return 1;
767 return 0;
768 }
769
770 static inline int ata_id_form_factor(const u16 *id)
771 {
772 u16 val = id[168];
773
774 if (ata_id_major_version(id) < 7 || val == 0 || val == 0xffff)
775 return 0;
776
777 val &= 0xf;
778
779 if (val > 5)
780 return 0;
781
782 return val;
783 }
784
785 static inline int ata_id_rotation_rate(const u16 *id)
786 {
787 u16 val = id[217];
788
789 if (ata_id_major_version(id) < 7 || val == 0 || val == 0xffff)
790 return 0;
791
792 if (val > 1 && val < 0x401)
793 return 0;
794
795 return val;
796 }
797
798 static inline int ata_id_has_trim(const u16 *id)
799 {
800 if (ata_id_major_version(id) >= 7 &&
801 (id[ATA_ID_DATA_SET_MGMT] & 1))
802 return 1;
803 return 0;
804 }
805
806 static inline int ata_id_current_chs_valid(const u16 *id)
807 {
808 /* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command
809 has not been issued to the device then the values of
810 id[ATA_ID_CUR_CYLS] to id[ATA_ID_CUR_SECTORS] are vendor specific. */
811 return (id[ATA_ID_FIELD_VALID] & 1) && /* Current translation valid */
812 id[ATA_ID_CUR_CYLS] && /* cylinders in current translation */
813 id[ATA_ID_CUR_HEADS] && /* heads in current translation */
814 id[ATA_ID_CUR_HEADS] <= 16 &&
815 id[ATA_ID_CUR_SECTORS]; /* sectors in current translation */
816 }
817
818 static inline int ata_id_is_cfa(const u16 *id)
819 {
820 if (id[ATA_ID_CONFIG] == 0x848A) /* Traditional CF */
821 return 1;
822 /*
823 * CF specs don't require specific value in the word 0 anymore and yet
824 * they forbid to report the ATA version in the word 80 and require the
825 * CFA feature set support to be indicated in the word 83 in this case.
826 * Unfortunately, some cards only follow either of this requirements,
827 * and while those that don't indicate CFA feature support need some
828 * sort of quirk list, it seems impractical for the ones that do...
829 */
830 if ((id[ATA_ID_COMMAND_SET_2] & 0xC004) == 0x4004)
831 return 1;
832 return 0;
833 }
834
835 static inline int ata_id_is_ssd(const u16 *id)
836 {
837 return id[ATA_ID_ROT_SPEED] == 0x01;
838 }
839
840 static inline int ata_id_pio_need_iordy(const u16 *id, const u8 pio)
841 {
842 /* CF spec. r4.1 Table 22 says no IORDY on PIO5 and PIO6. */
843 if (pio > 4 && ata_id_is_cfa(id))
844 return 0;
845 /* For PIO3 and higher it is mandatory. */
846 if (pio > 2)
847 return 1;
848 /* Turn it on when possible. */
849 if (ata_id_has_iordy(id))
850 return 1;
851 return 0;
852 }
853
854 static inline int ata_drive_40wire(const u16 *dev_id)
855 {
856 if (ata_id_is_sata(dev_id))
857 return 0; /* SATA */
858 if ((dev_id[ATA_ID_HW_CONFIG] & 0xE000) == 0x6000)
859 return 0; /* 80 wire */
860 return 1;
861 }
862
863 static inline int ata_drive_40wire_relaxed(const u16 *dev_id)
864 {
865 if ((dev_id[ATA_ID_HW_CONFIG] & 0x2000) == 0x2000)
866 return 0; /* 80 wire */
867 return 1;
868 }
869
870 static inline int atapi_cdb_len(const u16 *dev_id)
871 {
872 u16 tmp = dev_id[ATA_ID_CONFIG] & 0x3;
873 switch (tmp) {
874 case 0: return 12;
875 case 1: return 16;
876 default: return -1;
877 }
878 }
879
880 static inline int atapi_command_packet_set(const u16 *dev_id)
881 {
882 return (dev_id[ATA_ID_CONFIG] >> 8) & 0x1f;
883 }
884
885 static inline int atapi_id_dmadir(const u16 *dev_id)
886 {
887 return ata_id_major_version(dev_id) >= 7 && (dev_id[62] & 0x8000);
888 }
889
890 /*
891 * ata_id_is_lba_capacity_ok() performs a sanity check on
892 * the claimed LBA capacity value for the device.
893 *
894 * Returns 1 if LBA capacity looks sensible, 0 otherwise.
895 *
896 * It is called only once for each device.
897 */
898 static inline int ata_id_is_lba_capacity_ok(u16 *id)
899 {
900 unsigned long lba_sects, chs_sects, head, tail;
901
902 /* No non-LBA info .. so valid! */
903 if (id[ATA_ID_CYLS] == 0)
904 return 1;
905
906 lba_sects = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
907
908 /*
909 * The ATA spec tells large drives to return
910 * C/H/S = 16383/16/63 independent of their size.
911 * Some drives can be jumpered to use 15 heads instead of 16.
912 * Some drives can be jumpered to use 4092 cyls instead of 16383.
913 */
914 if ((id[ATA_ID_CYLS] == 16383 ||
915 (id[ATA_ID_CYLS] == 4092 && id[ATA_ID_CUR_CYLS] == 16383)) &&
916 id[ATA_ID_SECTORS] == 63 &&
917 (id[ATA_ID_HEADS] == 15 || id[ATA_ID_HEADS] == 16) &&
918 (lba_sects >= 16383 * 63 * id[ATA_ID_HEADS]))
919 return 1;
920
921 chs_sects = id[ATA_ID_CYLS] * id[ATA_ID_HEADS] * id[ATA_ID_SECTORS];
922
923 /* perform a rough sanity check on lba_sects: within 10% is OK */
924 if (lba_sects - chs_sects < chs_sects/10)
925 return 1;
926
927 /* some drives have the word order reversed */
928 head = (lba_sects >> 16) & 0xffff;
929 tail = lba_sects & 0xffff;
930 lba_sects = head | (tail << 16);
931
932 if (lba_sects - chs_sects < chs_sects/10) {
933 *(__le32 *)&id[ATA_ID_LBA_CAPACITY] = __cpu_to_le32(lba_sects);
934 return 1; /* LBA capacity is (now) good */
935 }
936
937 return 0; /* LBA capacity value may be bad */
938 }
939
940 static inline void ata_id_to_hd_driveid(u16 *id)
941 {
942 #ifdef __BIG_ENDIAN
943 /* accessed in struct hd_driveid as 8-bit values */
944 id[ATA_ID_MAX_MULTSECT] = __cpu_to_le16(id[ATA_ID_MAX_MULTSECT]);
945 id[ATA_ID_CAPABILITY] = __cpu_to_le16(id[ATA_ID_CAPABILITY]);
946 id[ATA_ID_OLD_PIO_MODES] = __cpu_to_le16(id[ATA_ID_OLD_PIO_MODES]);
947 id[ATA_ID_OLD_DMA_MODES] = __cpu_to_le16(id[ATA_ID_OLD_DMA_MODES]);
948 id[ATA_ID_MULTSECT] = __cpu_to_le16(id[ATA_ID_MULTSECT]);
949
950 /* as 32-bit values */
951 *(u32 *)&id[ATA_ID_LBA_CAPACITY] = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
952 *(u32 *)&id[ATA_ID_SPG] = ata_id_u32(id, ATA_ID_SPG);
953
954 /* as 64-bit value */
955 *(u64 *)&id[ATA_ID_LBA_CAPACITY_2] =
956 ata_id_u64(id, ATA_ID_LBA_CAPACITY_2);
957 #endif
958 }
959
960 /*
961 * Write up to 'max' LBA Range Entries to the buffer that will cover the
962 * extent from sector to sector + count. This is used for TRIM and for
963 * ADD LBA(S) TO NV CACHE PINNED SET.
964 */
965 static inline unsigned ata_set_lba_range_entries(void *_buffer, unsigned max,
966 u64 sector, unsigned long count)
967 {
968 __le64 *buffer = _buffer;
969 unsigned i = 0;
970
971 while (i < max) {
972 u64 entry = sector |
973 ((u64)(count > 0xffff ? 0xffff : count) << 48);
974 buffer[i++] = __cpu_to_le64(entry);
975 if (count <= 0xffff)
976 break;
977 count -= 0xffff;
978 sector += 0xffff;
979 }
980
981 max = ALIGN(i * 8, 512);
982 memset(buffer + i, 0, max - i * 8);
983 return max;
984 }
985
986 static inline int is_multi_taskfile(struct ata_taskfile *tf)
987 {
988 return (tf->command == ATA_CMD_READ_MULTI) ||
989 (tf->command == ATA_CMD_WRITE_MULTI) ||
990 (tf->command == ATA_CMD_READ_MULTI_EXT) ||
991 (tf->command == ATA_CMD_WRITE_MULTI_EXT) ||
992 (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT);
993 }
994
995 static inline int ata_ok(u8 status)
996 {
997 return ((status & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ | ATA_ERR))
998 == ATA_DRDY);
999 }
1000
1001 static inline int lba_28_ok(u64 block, u32 n_block)
1002 {
1003 /* check the ending block number */
1004 return ((block + n_block) < ((u64)1 << 28)) && (n_block <= 256);
1005 }
1006
1007 static inline int lba_48_ok(u64 block, u32 n_block)
1008 {
1009 /* check the ending block number */
1010 return ((block + n_block - 1) < ((u64)1 << 48)) && (n_block <= 65536);
1011 }
1012
1013 #define sata_pmp_gscr_vendor(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] & 0xffff)
1014 #define sata_pmp_gscr_devid(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] >> 16)
1015 #define sata_pmp_gscr_rev(gscr) (((gscr)[SATA_PMP_GSCR_REV] >> 8) & 0xff)
1016 #define sata_pmp_gscr_ports(gscr) ((gscr)[SATA_PMP_GSCR_PORT_INFO] & 0xf)
1017
1018 #endif /* __LINUX_ATA_H__ */
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