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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
[cris-mirror.git] / include / linux / ata.h
blob40d150ad7e0714d6bf00dd62a503c3734c0b28d9
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/driver-api/libata.rst
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_1024 = 1024,
49 ATA_MAX_SECTORS_LBA48 = 65535,/* avoid count to be 0000h */
50 ATA_MAX_SECTORS_TAPE = 65535,
51 ATA_MAX_TRIM_RNUM = 64, /* 512-byte payload / (6-byte LBA + 2-byte range per entry) */
52
53 ATA_ID_WORDS = 256,
54 ATA_ID_CONFIG = 0,
55 ATA_ID_CYLS = 1,
56 ATA_ID_HEADS = 3,
57 ATA_ID_SECTORS = 6,
58 ATA_ID_SERNO = 10,
59 ATA_ID_BUF_SIZE = 21,
60 ATA_ID_FW_REV = 23,
61 ATA_ID_PROD = 27,
62 ATA_ID_MAX_MULTSECT = 47,
63 ATA_ID_DWORD_IO = 48, /* before ATA-8 */
64 ATA_ID_TRUSTED = 48, /* ATA-8 and later */
65 ATA_ID_CAPABILITY = 49,
66 ATA_ID_OLD_PIO_MODES = 51,
67 ATA_ID_OLD_DMA_MODES = 52,
68 ATA_ID_FIELD_VALID = 53,
69 ATA_ID_CUR_CYLS = 54,
70 ATA_ID_CUR_HEADS = 55,
71 ATA_ID_CUR_SECTORS = 56,
72 ATA_ID_MULTSECT = 59,
73 ATA_ID_LBA_CAPACITY = 60,
74 ATA_ID_SWDMA_MODES = 62,
75 ATA_ID_MWDMA_MODES = 63,
76 ATA_ID_PIO_MODES = 64,
77 ATA_ID_EIDE_DMA_MIN = 65,
78 ATA_ID_EIDE_DMA_TIME = 66,
79 ATA_ID_EIDE_PIO = 67,
80 ATA_ID_EIDE_PIO_IORDY = 68,
81 ATA_ID_ADDITIONAL_SUPP = 69,
82 ATA_ID_QUEUE_DEPTH = 75,
83 ATA_ID_SATA_CAPABILITY = 76,
84 ATA_ID_SATA_CAPABILITY_2 = 77,
85 ATA_ID_FEATURE_SUPP = 78,
86 ATA_ID_MAJOR_VER = 80,
87 ATA_ID_COMMAND_SET_1 = 82,
88 ATA_ID_COMMAND_SET_2 = 83,
89 ATA_ID_CFSSE = 84,
90 ATA_ID_CFS_ENABLE_1 = 85,
91 ATA_ID_CFS_ENABLE_2 = 86,
92 ATA_ID_CSF_DEFAULT = 87,
93 ATA_ID_UDMA_MODES = 88,
94 ATA_ID_HW_CONFIG = 93,
95 ATA_ID_SPG = 98,
96 ATA_ID_LBA_CAPACITY_2 = 100,
97 ATA_ID_SECTOR_SIZE = 106,
98 ATA_ID_WWN = 108,
99 ATA_ID_LOGICAL_SECTOR_SIZE = 117, /* and 118 */
100 ATA_ID_COMMAND_SET_3 = 119,
101 ATA_ID_COMMAND_SET_4 = 120,
102 ATA_ID_LAST_LUN = 126,
103 ATA_ID_DLF = 128,
104 ATA_ID_CSFO = 129,
105 ATA_ID_CFA_POWER = 160,
106 ATA_ID_CFA_KEY_MGMT = 162,
107 ATA_ID_CFA_MODES = 163,
108 ATA_ID_DATA_SET_MGMT = 169,
109 ATA_ID_SCT_CMD_XPORT = 206,
110 ATA_ID_ROT_SPEED = 217,
111 ATA_ID_PIO4 = (1 << 1),
112
113 ATA_ID_SERNO_LEN = 20,
114 ATA_ID_FW_REV_LEN = 8,
115 ATA_ID_PROD_LEN = 40,
116 ATA_ID_WWN_LEN = 8,
117
118 ATA_PCI_CTL_OFS = 2,
119
120 ATA_PIO0 = (1 << 0),
121 ATA_PIO1 = ATA_PIO0 | (1 << 1),
122 ATA_PIO2 = ATA_PIO1 | (1 << 2),
123 ATA_PIO3 = ATA_PIO2 | (1 << 3),
124 ATA_PIO4 = ATA_PIO3 | (1 << 4),
125 ATA_PIO5 = ATA_PIO4 | (1 << 5),
126 ATA_PIO6 = ATA_PIO5 | (1 << 6),
127
128 ATA_PIO4_ONLY = (1 << 4),
129
130 ATA_SWDMA0 = (1 << 0),
131 ATA_SWDMA1 = ATA_SWDMA0 | (1 << 1),
132 ATA_SWDMA2 = ATA_SWDMA1 | (1 << 2),
133
134 ATA_SWDMA2_ONLY = (1 << 2),
135
136 ATA_MWDMA0 = (1 << 0),
137 ATA_MWDMA1 = ATA_MWDMA0 | (1 << 1),
138 ATA_MWDMA2 = ATA_MWDMA1 | (1 << 2),
139 ATA_MWDMA3 = ATA_MWDMA2 | (1 << 3),
140 ATA_MWDMA4 = ATA_MWDMA3 | (1 << 4),
141
142 ATA_MWDMA12_ONLY = (1 << 1) | (1 << 2),
143 ATA_MWDMA2_ONLY = (1 << 2),
144
145 ATA_UDMA0 = (1 << 0),
146 ATA_UDMA1 = ATA_UDMA0 | (1 << 1),
147 ATA_UDMA2 = ATA_UDMA1 | (1 << 2),
148 ATA_UDMA3 = ATA_UDMA2 | (1 << 3),
149 ATA_UDMA4 = ATA_UDMA3 | (1 << 4),
150 ATA_UDMA5 = ATA_UDMA4 | (1 << 5),
151 ATA_UDMA6 = ATA_UDMA5 | (1 << 6),
152 ATA_UDMA7 = ATA_UDMA6 | (1 << 7),
153 /* ATA_UDMA7 is just for completeness... doesn't exist (yet?). */
154
155 ATA_UDMA24_ONLY = (1 << 2) | (1 << 4),
156
157 ATA_UDMA_MASK_40C = ATA_UDMA2, /* udma0-2 */
158
159 /* DMA-related */
160 ATA_PRD_SZ = 8,
161 ATA_PRD_TBL_SZ = (ATA_MAX_PRD * ATA_PRD_SZ),
162 ATA_PRD_EOT = (1 << 31), /* end-of-table flag */
163
164 ATA_DMA_TABLE_OFS = 4,
165 ATA_DMA_STATUS = 2,
166 ATA_DMA_CMD = 0,
167 ATA_DMA_WR = (1 << 3),
168 ATA_DMA_START = (1 << 0),
169 ATA_DMA_INTR = (1 << 2),
170 ATA_DMA_ERR = (1 << 1),
171 ATA_DMA_ACTIVE = (1 << 0),
172
173 /* bits in ATA command block registers */
174 ATA_HOB = (1 << 7), /* LBA48 selector */
175 ATA_NIEN = (1 << 1), /* disable-irq flag */
176 ATA_LBA = (1 << 6), /* LBA28 selector */
177 ATA_DEV1 = (1 << 4), /* Select Device 1 (slave) */
178 ATA_DEVICE_OBS = (1 << 7) | (1 << 5), /* obs bits in dev reg */
179 ATA_DEVCTL_OBS = (1 << 3), /* obsolete bit in devctl reg */
180 ATA_BUSY = (1 << 7), /* BSY status bit */
181 ATA_DRDY = (1 << 6), /* device ready */
182 ATA_DF = (1 << 5), /* device fault */
183 ATA_DSC = (1 << 4), /* drive seek complete */
184 ATA_DRQ = (1 << 3), /* data request i/o */
185 ATA_CORR = (1 << 2), /* corrected data error */
186 ATA_SENSE = (1 << 1), /* sense code available */
187 ATA_ERR = (1 << 0), /* have an error */
188 ATA_SRST = (1 << 2), /* software reset */
189 ATA_ICRC = (1 << 7), /* interface CRC error */
190 ATA_BBK = ATA_ICRC, /* pre-EIDE: block marked bad */
191 ATA_UNC = (1 << 6), /* uncorrectable media error */
192 ATA_MC = (1 << 5), /* media changed */
193 ATA_IDNF = (1 << 4), /* ID not found */
194 ATA_MCR = (1 << 3), /* media change requested */
195 ATA_ABORTED = (1 << 2), /* command aborted */
196 ATA_TRK0NF = (1 << 1), /* track 0 not found */
197 ATA_AMNF = (1 << 0), /* address mark not found */
198 ATAPI_LFS = 0xF0, /* last failed sense */
199 ATAPI_EOM = ATA_TRK0NF, /* end of media */
200 ATAPI_ILI = ATA_AMNF, /* illegal length indication */
201 ATAPI_IO = (1 << 1),
202 ATAPI_COD = (1 << 0),
203
204 /* ATA command block registers */
205 ATA_REG_DATA = 0x00,
206 ATA_REG_ERR = 0x01,
207 ATA_REG_NSECT = 0x02,
208 ATA_REG_LBAL = 0x03,
209 ATA_REG_LBAM = 0x04,
210 ATA_REG_LBAH = 0x05,
211 ATA_REG_DEVICE = 0x06,
212 ATA_REG_STATUS = 0x07,
213
214 ATA_REG_FEATURE = ATA_REG_ERR, /* and their aliases */
215 ATA_REG_CMD = ATA_REG_STATUS,
216 ATA_REG_BYTEL = ATA_REG_LBAM,
217 ATA_REG_BYTEH = ATA_REG_LBAH,
218 ATA_REG_DEVSEL = ATA_REG_DEVICE,
219 ATA_REG_IRQ = ATA_REG_NSECT,
220
221 /* ATA device commands */
222 ATA_CMD_DEV_RESET = 0x08, /* ATAPI device reset */
223 ATA_CMD_CHK_POWER = 0xE5, /* check power mode */
224 ATA_CMD_STANDBY = 0xE2, /* place in standby power mode */
225 ATA_CMD_IDLE = 0xE3, /* place in idle power mode */
226 ATA_CMD_EDD = 0x90, /* execute device diagnostic */
227 ATA_CMD_DOWNLOAD_MICRO = 0x92,
228 ATA_CMD_DOWNLOAD_MICRO_DMA = 0x93,
229 ATA_CMD_NOP = 0x00,
230 ATA_CMD_FLUSH = 0xE7,
231 ATA_CMD_FLUSH_EXT = 0xEA,
232 ATA_CMD_ID_ATA = 0xEC,
233 ATA_CMD_ID_ATAPI = 0xA1,
234 ATA_CMD_SERVICE = 0xA2,
235 ATA_CMD_READ = 0xC8,
236 ATA_CMD_READ_EXT = 0x25,
237 ATA_CMD_READ_QUEUED = 0x26,
238 ATA_CMD_READ_STREAM_EXT = 0x2B,
239 ATA_CMD_READ_STREAM_DMA_EXT = 0x2A,
240 ATA_CMD_WRITE = 0xCA,
241 ATA_CMD_WRITE_EXT = 0x35,
242 ATA_CMD_WRITE_QUEUED = 0x36,
243 ATA_CMD_WRITE_STREAM_EXT = 0x3B,
244 ATA_CMD_WRITE_STREAM_DMA_EXT = 0x3A,
245 ATA_CMD_WRITE_FUA_EXT = 0x3D,
246 ATA_CMD_WRITE_QUEUED_FUA_EXT = 0x3E,
247 ATA_CMD_FPDMA_READ = 0x60,
248 ATA_CMD_FPDMA_WRITE = 0x61,
249 ATA_CMD_NCQ_NON_DATA = 0x63,
250 ATA_CMD_FPDMA_SEND = 0x64,
251 ATA_CMD_FPDMA_RECV = 0x65,
252 ATA_CMD_PIO_READ = 0x20,
253 ATA_CMD_PIO_READ_EXT = 0x24,
254 ATA_CMD_PIO_WRITE = 0x30,
255 ATA_CMD_PIO_WRITE_EXT = 0x34,
256 ATA_CMD_READ_MULTI = 0xC4,
257 ATA_CMD_READ_MULTI_EXT = 0x29,
258 ATA_CMD_WRITE_MULTI = 0xC5,
259 ATA_CMD_WRITE_MULTI_EXT = 0x39,
260 ATA_CMD_WRITE_MULTI_FUA_EXT = 0xCE,
261 ATA_CMD_SET_FEATURES = 0xEF,
262 ATA_CMD_SET_MULTI = 0xC6,
263 ATA_CMD_PACKET = 0xA0,
264 ATA_CMD_VERIFY = 0x40,
265 ATA_CMD_VERIFY_EXT = 0x42,
266 ATA_CMD_WRITE_UNCORR_EXT = 0x45,
267 ATA_CMD_STANDBYNOW1 = 0xE0,
268 ATA_CMD_IDLEIMMEDIATE = 0xE1,
269 ATA_CMD_SLEEP = 0xE6,
270 ATA_CMD_INIT_DEV_PARAMS = 0x91,
271 ATA_CMD_READ_NATIVE_MAX = 0xF8,
272 ATA_CMD_READ_NATIVE_MAX_EXT = 0x27,
273 ATA_CMD_SET_MAX = 0xF9,
274 ATA_CMD_SET_MAX_EXT = 0x37,
275 ATA_CMD_READ_LOG_EXT = 0x2F,
276 ATA_CMD_WRITE_LOG_EXT = 0x3F,
277 ATA_CMD_READ_LOG_DMA_EXT = 0x47,
278 ATA_CMD_WRITE_LOG_DMA_EXT = 0x57,
279 ATA_CMD_TRUSTED_NONDATA = 0x5B,
280 ATA_CMD_TRUSTED_RCV = 0x5C,
281 ATA_CMD_TRUSTED_RCV_DMA = 0x5D,
282 ATA_CMD_TRUSTED_SND = 0x5E,
283 ATA_CMD_TRUSTED_SND_DMA = 0x5F,
284 ATA_CMD_PMP_READ = 0xE4,
285 ATA_CMD_PMP_READ_DMA = 0xE9,
286 ATA_CMD_PMP_WRITE = 0xE8,
287 ATA_CMD_PMP_WRITE_DMA = 0xEB,
288 ATA_CMD_CONF_OVERLAY = 0xB1,
289 ATA_CMD_SEC_SET_PASS = 0xF1,
290 ATA_CMD_SEC_UNLOCK = 0xF2,
291 ATA_CMD_SEC_ERASE_PREP = 0xF3,
292 ATA_CMD_SEC_ERASE_UNIT = 0xF4,
293 ATA_CMD_SEC_FREEZE_LOCK = 0xF5,
294 ATA_CMD_SEC_DISABLE_PASS = 0xF6,
295 ATA_CMD_CONFIG_STREAM = 0x51,
296 ATA_CMD_SMART = 0xB0,
297 ATA_CMD_MEDIA_LOCK = 0xDE,
298 ATA_CMD_MEDIA_UNLOCK = 0xDF,
299 ATA_CMD_DSM = 0x06,
300 ATA_CMD_CHK_MED_CRD_TYP = 0xD1,
301 ATA_CMD_CFA_REQ_EXT_ERR = 0x03,
302 ATA_CMD_CFA_WRITE_NE = 0x38,
303 ATA_CMD_CFA_TRANS_SECT = 0x87,
304 ATA_CMD_CFA_ERASE = 0xC0,
305 ATA_CMD_CFA_WRITE_MULT_NE = 0xCD,
306 ATA_CMD_REQ_SENSE_DATA = 0x0B,
307 ATA_CMD_SANITIZE_DEVICE = 0xB4,
308 ATA_CMD_ZAC_MGMT_IN = 0x4A,
309 ATA_CMD_ZAC_MGMT_OUT = 0x9F,
310
311 /* marked obsolete in the ATA/ATAPI-7 spec */
312 ATA_CMD_RESTORE = 0x10,
313
314 /* Subcmds for ATA_CMD_FPDMA_RECV */
315 ATA_SUBCMD_FPDMA_RECV_RD_LOG_DMA_EXT = 0x01,
316 ATA_SUBCMD_FPDMA_RECV_ZAC_MGMT_IN = 0x02,
317
318 /* Subcmds for ATA_CMD_FPDMA_SEND */
319 ATA_SUBCMD_FPDMA_SEND_DSM = 0x00,
320 ATA_SUBCMD_FPDMA_SEND_WR_LOG_DMA_EXT = 0x02,
321
322 /* Subcmds for ATA_CMD_NCQ_NON_DATA */
323 ATA_SUBCMD_NCQ_NON_DATA_ABORT_QUEUE = 0x00,
324 ATA_SUBCMD_NCQ_NON_DATA_SET_FEATURES = 0x05,
325 ATA_SUBCMD_NCQ_NON_DATA_ZERO_EXT = 0x06,
326 ATA_SUBCMD_NCQ_NON_DATA_ZAC_MGMT_OUT = 0x07,
327
328 /* Subcmds for ATA_CMD_ZAC_MGMT_IN */
329 ATA_SUBCMD_ZAC_MGMT_IN_REPORT_ZONES = 0x00,
330
331 /* Subcmds for ATA_CMD_ZAC_MGMT_OUT */
332 ATA_SUBCMD_ZAC_MGMT_OUT_CLOSE_ZONE = 0x01,
333 ATA_SUBCMD_ZAC_MGMT_OUT_FINISH_ZONE = 0x02,
334 ATA_SUBCMD_ZAC_MGMT_OUT_OPEN_ZONE = 0x03,
335 ATA_SUBCMD_ZAC_MGMT_OUT_RESET_WRITE_POINTER = 0x04,
336
337 /* READ_LOG_EXT pages */
338 ATA_LOG_DIRECTORY = 0x0,
339 ATA_LOG_SATA_NCQ = 0x10,
340 ATA_LOG_NCQ_NON_DATA = 0x12,
341 ATA_LOG_NCQ_SEND_RECV = 0x13,
342 ATA_LOG_IDENTIFY_DEVICE = 0x30,
343
344 /* Identify device log pages: */
345 ATA_LOG_SECURITY = 0x06,
346 ATA_LOG_SATA_SETTINGS = 0x08,
347 ATA_LOG_ZONED_INFORMATION = 0x09,
348
349 /* Identify device SATA settings log:*/
350 ATA_LOG_DEVSLP_OFFSET = 0x30,
351 ATA_LOG_DEVSLP_SIZE = 0x08,
352 ATA_LOG_DEVSLP_MDAT = 0x00,
353 ATA_LOG_DEVSLP_MDAT_MASK = 0x1F,
354 ATA_LOG_DEVSLP_DETO = 0x01,
355 ATA_LOG_DEVSLP_VALID = 0x07,
356 ATA_LOG_DEVSLP_VALID_MASK = 0x80,
357 ATA_LOG_NCQ_PRIO_OFFSET = 0x09,
358
359 /* NCQ send and receive log */
360 ATA_LOG_NCQ_SEND_RECV_SUBCMDS_OFFSET = 0x00,
361 ATA_LOG_NCQ_SEND_RECV_SUBCMDS_DSM = (1 << 0),
362 ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET = 0x04,
363 ATA_LOG_NCQ_SEND_RECV_DSM_TRIM = (1 << 0),
364 ATA_LOG_NCQ_SEND_RECV_RD_LOG_OFFSET = 0x08,
365 ATA_LOG_NCQ_SEND_RECV_RD_LOG_SUPPORTED = (1 << 0),
366 ATA_LOG_NCQ_SEND_RECV_WR_LOG_OFFSET = 0x0C,
367 ATA_LOG_NCQ_SEND_RECV_WR_LOG_SUPPORTED = (1 << 0),
368 ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_OFFSET = 0x10,
369 ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_OUT_SUPPORTED = (1 << 0),
370 ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_IN_SUPPORTED = (1 << 1),
371 ATA_LOG_NCQ_SEND_RECV_SIZE = 0x14,
372
373 /* NCQ Non-Data log */
374 ATA_LOG_NCQ_NON_DATA_SUBCMDS_OFFSET = 0x00,
375 ATA_LOG_NCQ_NON_DATA_ABORT_OFFSET = 0x00,
376 ATA_LOG_NCQ_NON_DATA_ABORT_NCQ = (1 << 0),
377 ATA_LOG_NCQ_NON_DATA_ABORT_ALL = (1 << 1),
378 ATA_LOG_NCQ_NON_DATA_ABORT_STREAMING = (1 << 2),
379 ATA_LOG_NCQ_NON_DATA_ABORT_NON_STREAMING = (1 << 3),
380 ATA_LOG_NCQ_NON_DATA_ABORT_SELECTED = (1 << 4),
381 ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OFFSET = 0x1C,
382 ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OUT = (1 << 0),
383 ATA_LOG_NCQ_NON_DATA_SIZE = 0x40,
384
385 /* READ/WRITE LONG (obsolete) */
386 ATA_CMD_READ_LONG = 0x22,
387 ATA_CMD_READ_LONG_ONCE = 0x23,
388 ATA_CMD_WRITE_LONG = 0x32,
389 ATA_CMD_WRITE_LONG_ONCE = 0x33,
390
391 /* SETFEATURES stuff */
392 SETFEATURES_XFER = 0x03,
393 XFER_UDMA_7 = 0x47,
394 XFER_UDMA_6 = 0x46,
395 XFER_UDMA_5 = 0x45,
396 XFER_UDMA_4 = 0x44,
397 XFER_UDMA_3 = 0x43,
398 XFER_UDMA_2 = 0x42,
399 XFER_UDMA_1 = 0x41,
400 XFER_UDMA_0 = 0x40,
401 XFER_MW_DMA_4 = 0x24, /* CFA only */
402 XFER_MW_DMA_3 = 0x23, /* CFA only */
403 XFER_MW_DMA_2 = 0x22,
404 XFER_MW_DMA_1 = 0x21,
405 XFER_MW_DMA_0 = 0x20,
406 XFER_SW_DMA_2 = 0x12,
407 XFER_SW_DMA_1 = 0x11,
408 XFER_SW_DMA_0 = 0x10,
409 XFER_PIO_6 = 0x0E, /* CFA only */
410 XFER_PIO_5 = 0x0D, /* CFA only */
411 XFER_PIO_4 = 0x0C,
412 XFER_PIO_3 = 0x0B,
413 XFER_PIO_2 = 0x0A,
414 XFER_PIO_1 = 0x09,
415 XFER_PIO_0 = 0x08,
416 XFER_PIO_SLOW = 0x00,
417
418 SETFEATURES_WC_ON = 0x02, /* Enable write cache */
419 SETFEATURES_WC_OFF = 0x82, /* Disable write cache */
420
421 SETFEATURES_RA_ON = 0xaa, /* Enable read look-ahead */
422 SETFEATURES_RA_OFF = 0x55, /* Disable read look-ahead */
423
424 /* Enable/Disable Automatic Acoustic Management */
425 SETFEATURES_AAM_ON = 0x42,
426 SETFEATURES_AAM_OFF = 0xC2,
427
428 SETFEATURES_SPINUP = 0x07, /* Spin-up drive */
429 SETFEATURES_SPINUP_TIMEOUT = 30000, /* 30s timeout for drive spin-up from PUIS */
430
431 SETFEATURES_SATA_ENABLE = 0x10, /* Enable use of SATA feature */
432 SETFEATURES_SATA_DISABLE = 0x90, /* Disable use of SATA feature */
433
434 /* SETFEATURE Sector counts for SATA features */
435 SATA_FPDMA_OFFSET = 0x01, /* FPDMA non-zero buffer offsets */
436 SATA_FPDMA_AA = 0x02, /* FPDMA Setup FIS Auto-Activate */
437 SATA_DIPM = 0x03, /* Device Initiated Power Management */
438 SATA_FPDMA_IN_ORDER = 0x04, /* FPDMA in-order data delivery */
439 SATA_AN = 0x05, /* Asynchronous Notification */
440 SATA_SSP = 0x06, /* Software Settings Preservation */
441 SATA_DEVSLP = 0x09, /* Device Sleep */
442
443 SETFEATURE_SENSE_DATA = 0xC3, /* Sense Data Reporting feature */
444
445 /* feature values for SET_MAX */
446 ATA_SET_MAX_ADDR = 0x00,
447 ATA_SET_MAX_PASSWD = 0x01,
448 ATA_SET_MAX_LOCK = 0x02,
449 ATA_SET_MAX_UNLOCK = 0x03,
450 ATA_SET_MAX_FREEZE_LOCK = 0x04,
451 ATA_SET_MAX_PASSWD_DMA = 0x05,
452 ATA_SET_MAX_UNLOCK_DMA = 0x06,
453
454 /* feature values for DEVICE CONFIGURATION OVERLAY */
455 ATA_DCO_RESTORE = 0xC0,
456 ATA_DCO_FREEZE_LOCK = 0xC1,
457 ATA_DCO_IDENTIFY = 0xC2,
458 ATA_DCO_SET = 0xC3,
459
460 /* feature values for SMART */
461 ATA_SMART_ENABLE = 0xD8,
462 ATA_SMART_READ_VALUES = 0xD0,
463 ATA_SMART_READ_THRESHOLDS = 0xD1,
464
465 /* feature values for Data Set Management */
466 ATA_DSM_TRIM = 0x01,
467
468 /* password used in LBA Mid / LBA High for executing SMART commands */
469 ATA_SMART_LBAM_PASS = 0x4F,
470 ATA_SMART_LBAH_PASS = 0xC2,
471
472 /* ATAPI stuff */
473 ATAPI_PKT_DMA = (1 << 0),
474 ATAPI_DMADIR = (1 << 2), /* ATAPI data dir:
475 0=to device, 1=to host */
476 ATAPI_CDB_LEN = 16,
477
478 /* PMP stuff */
479 SATA_PMP_MAX_PORTS = 15,
480 SATA_PMP_CTRL_PORT = 15,
481
482 SATA_PMP_GSCR_DWORDS = 128,
483 SATA_PMP_GSCR_PROD_ID = 0,
484 SATA_PMP_GSCR_REV = 1,
485 SATA_PMP_GSCR_PORT_INFO = 2,
486 SATA_PMP_GSCR_ERROR = 32,
487 SATA_PMP_GSCR_ERROR_EN = 33,
488 SATA_PMP_GSCR_FEAT = 64,
489 SATA_PMP_GSCR_FEAT_EN = 96,
490
491 SATA_PMP_PSCR_STATUS = 0,
492 SATA_PMP_PSCR_ERROR = 1,
493 SATA_PMP_PSCR_CONTROL = 2,
494
495 SATA_PMP_FEAT_BIST = (1 << 0),
496 SATA_PMP_FEAT_PMREQ = (1 << 1),
497 SATA_PMP_FEAT_DYNSSC = (1 << 2),
498 SATA_PMP_FEAT_NOTIFY = (1 << 3),
499
500 /* cable types */
501 ATA_CBL_NONE = 0,
502 ATA_CBL_PATA40 = 1,
503 ATA_CBL_PATA80 = 2,
504 ATA_CBL_PATA40_SHORT = 3, /* 40 wire cable to high UDMA spec */
505 ATA_CBL_PATA_UNK = 4, /* don't know, maybe 80c? */
506 ATA_CBL_PATA_IGN = 5, /* don't know, ignore cable handling */
507 ATA_CBL_SATA = 6,
508
509 /* SATA Status and Control Registers */
510 SCR_STATUS = 0,
511 SCR_ERROR = 1,
512 SCR_CONTROL = 2,
513 SCR_ACTIVE = 3,
514 SCR_NOTIFICATION = 4,
515
516 /* SError bits */
517 SERR_DATA_RECOVERED = (1 << 0), /* recovered data error */
518 SERR_COMM_RECOVERED = (1 << 1), /* recovered comm failure */
519 SERR_DATA = (1 << 8), /* unrecovered data error */
520 SERR_PERSISTENT = (1 << 9), /* persistent data/comm error */
521 SERR_PROTOCOL = (1 << 10), /* protocol violation */
522 SERR_INTERNAL = (1 << 11), /* host internal error */
523 SERR_PHYRDY_CHG = (1 << 16), /* PHY RDY changed */
524 SERR_PHY_INT_ERR = (1 << 17), /* PHY internal error */
525 SERR_COMM_WAKE = (1 << 18), /* Comm wake */
526 SERR_10B_8B_ERR = (1 << 19), /* 10b to 8b decode error */
527 SERR_DISPARITY = (1 << 20), /* Disparity */
528 SERR_CRC = (1 << 21), /* CRC error */
529 SERR_HANDSHAKE = (1 << 22), /* Handshake error */
530 SERR_LINK_SEQ_ERR = (1 << 23), /* Link sequence error */
531 SERR_TRANS_ST_ERROR = (1 << 24), /* Transport state trans. error */
532 SERR_UNRECOG_FIS = (1 << 25), /* Unrecognized FIS */
533 SERR_DEV_XCHG = (1 << 26), /* device exchanged */
534 };
535
536 enum ata_prot_flags {
537 /* protocol flags */
538 ATA_PROT_FLAG_PIO = (1 << 0), /* is PIO */
539 ATA_PROT_FLAG_DMA = (1 << 1), /* is DMA */
540 ATA_PROT_FLAG_NCQ = (1 << 2), /* is NCQ */
541 ATA_PROT_FLAG_ATAPI = (1 << 3), /* is ATAPI */
542
543 /* taskfile protocols */
544 ATA_PROT_UNKNOWN = (u8)-1,
545 ATA_PROT_NODATA = 0,
546 ATA_PROT_PIO = ATA_PROT_FLAG_PIO,
547 ATA_PROT_DMA = ATA_PROT_FLAG_DMA,
548 ATA_PROT_NCQ_NODATA = ATA_PROT_FLAG_NCQ,
549 ATA_PROT_NCQ = ATA_PROT_FLAG_DMA | ATA_PROT_FLAG_NCQ,
550 ATAPI_PROT_NODATA = ATA_PROT_FLAG_ATAPI,
551 ATAPI_PROT_PIO = ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_PIO,
552 ATAPI_PROT_DMA = ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_DMA,
553 };
554
555 enum ata_ioctls {
556 ATA_IOC_GET_IO32 = 0x309, /* HDIO_GET_32BIT */
557 ATA_IOC_SET_IO32 = 0x324, /* HDIO_SET_32BIT */
558 };
559
560 /* core structures */
561
562 struct ata_bmdma_prd {
563 __le32 addr;
564 __le32 flags_len;
565 };
566
567 /*
568 * id tests
569 */
570 #define ata_id_is_ata(id) (((id)[ATA_ID_CONFIG] & (1 << 15)) == 0)
571 #define ata_id_has_lba(id) ((id)[ATA_ID_CAPABILITY] & (1 << 9))
572 #define ata_id_has_dma(id) ((id)[ATA_ID_CAPABILITY] & (1 << 8))
573 #define ata_id_has_ncq(id) ((id)[ATA_ID_SATA_CAPABILITY] & (1 << 8))
574 #define ata_id_queue_depth(id) (((id)[ATA_ID_QUEUE_DEPTH] & 0x1f) + 1)
575 #define ata_id_removable(id) ((id)[ATA_ID_CONFIG] & (1 << 7))
576 #define ata_id_has_atapi_AN(id) \
577 ((((id)[ATA_ID_SATA_CAPABILITY] != 0x0000) && \
578 ((id)[ATA_ID_SATA_CAPABILITY] != 0xffff)) && \
579 ((id)[ATA_ID_FEATURE_SUPP] & (1 << 5)))
580 #define ata_id_has_fpdma_aa(id) \
581 ((((id)[ATA_ID_SATA_CAPABILITY] != 0x0000) && \
582 ((id)[ATA_ID_SATA_CAPABILITY] != 0xffff)) && \
583 ((id)[ATA_ID_FEATURE_SUPP] & (1 << 2)))
584 #define ata_id_iordy_disable(id) ((id)[ATA_ID_CAPABILITY] & (1 << 10))
585 #define ata_id_has_iordy(id) ((id)[ATA_ID_CAPABILITY] & (1 << 11))
586 #define ata_id_u32(id,n) \
587 (((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)]))
588 #define ata_id_u64(id,n) \
589 ( ((u64) (id)[(n) + 3] << 48) | \
590 ((u64) (id)[(n) + 2] << 32) | \
591 ((u64) (id)[(n) + 1] << 16) | \
592 ((u64) (id)[(n) + 0]) )
593
594 #define ata_id_cdb_intr(id) (((id)[ATA_ID_CONFIG] & 0x60) == 0x20)
595 #define ata_id_has_da(id) ((id)[ATA_ID_SATA_CAPABILITY_2] & (1 << 4))
596 #define ata_id_has_devslp(id) ((id)[ATA_ID_FEATURE_SUPP] & (1 << 8))
597 #define ata_id_has_ncq_autosense(id) \
598 ((id)[ATA_ID_FEATURE_SUPP] & (1 << 7))
599
600 static inline bool ata_id_has_hipm(const u16 *id)
601 {
602 u16 val = id[ATA_ID_SATA_CAPABILITY];
603
604 if (val == 0 || val == 0xffff)
605 return false;
606
607 return val & (1 << 9);
608 }
609
610 static inline bool ata_id_has_dipm(const u16 *id)
611 {
612 u16 val = id[ATA_ID_FEATURE_SUPP];
613
614 if (val == 0 || val == 0xffff)
615 return false;
616
617 return val & (1 << 3);
618 }
619
620
621 static inline bool ata_id_has_fua(const u16 *id)
622 {
623 if ((id[ATA_ID_CFSSE] & 0xC000) != 0x4000)
624 return false;
625 return id[ATA_ID_CFSSE] & (1 << 6);
626 }
627
628 static inline bool ata_id_has_flush(const u16 *id)
629 {
630 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
631 return false;
632 return id[ATA_ID_COMMAND_SET_2] & (1 << 12);
633 }
634
635 static inline bool ata_id_flush_enabled(const u16 *id)
636 {
637 if (ata_id_has_flush(id) == 0)
638 return false;
639 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
640 return false;
641 return id[ATA_ID_CFS_ENABLE_2] & (1 << 12);
642 }
643
644 static inline bool ata_id_has_flush_ext(const u16 *id)
645 {
646 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
647 return false;
648 return id[ATA_ID_COMMAND_SET_2] & (1 << 13);
649 }
650
651 static inline bool ata_id_flush_ext_enabled(const u16 *id)
652 {
653 if (ata_id_has_flush_ext(id) == 0)
654 return false;
655 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
656 return false;
657 /*
658 * some Maxtor disks have bit 13 defined incorrectly
659 * so check bit 10 too
660 */
661 return (id[ATA_ID_CFS_ENABLE_2] & 0x2400) == 0x2400;
662 }
663
664 static inline u32 ata_id_logical_sector_size(const u16 *id)
665 {
666 /* T13/1699-D Revision 6a, Sep 6, 2008. Page 128.
667 * IDENTIFY DEVICE data, word 117-118.
668 * 0xd000 ignores bit 13 (logical:physical > 1)
669 */
670 if ((id[ATA_ID_SECTOR_SIZE] & 0xd000) == 0x5000)
671 return (((id[ATA_ID_LOGICAL_SECTOR_SIZE+1] << 16)
672 + id[ATA_ID_LOGICAL_SECTOR_SIZE]) * sizeof(u16)) ;
673 return ATA_SECT_SIZE;
674 }
675
676 static inline u8 ata_id_log2_per_physical_sector(const u16 *id)
677 {
678 /* T13/1699-D Revision 6a, Sep 6, 2008. Page 128.
679 * IDENTIFY DEVICE data, word 106.
680 * 0xe000 ignores bit 12 (logical sector > 512 bytes)
681 */
682 if ((id[ATA_ID_SECTOR_SIZE] & 0xe000) == 0x6000)
683 return (id[ATA_ID_SECTOR_SIZE] & 0xf);
684 return 0;
685 }
686
687 /* Offset of logical sectors relative to physical sectors.
688 *
689 * If device has more than one logical sector per physical sector
690 * (aka 512 byte emulation), vendors might offset the "sector 0" address
691 * so sector 63 is "naturally aligned" - e.g. FAT partition table.
692 * This avoids Read/Mod/Write penalties when using FAT partition table
693 * and updating "well aligned" (FS perspective) physical sectors on every
694 * transaction.
695 */
696 static inline u16 ata_id_logical_sector_offset(const u16 *id,
697 u8 log2_per_phys)
698 {
699 u16 word_209 = id[209];
700
701 if ((log2_per_phys > 1) && (word_209 & 0xc000) == 0x4000) {
702 u16 first = word_209 & 0x3fff;
703 if (first > 0)
704 return (1 << log2_per_phys) - first;
705 }
706 return 0;
707 }
708
709 static inline bool ata_id_has_lba48(const u16 *id)
710 {
711 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
712 return false;
713 if (!ata_id_u64(id, ATA_ID_LBA_CAPACITY_2))
714 return false;
715 return id[ATA_ID_COMMAND_SET_2] & (1 << 10);
716 }
717
718 static inline bool ata_id_lba48_enabled(const u16 *id)
719 {
720 if (ata_id_has_lba48(id) == 0)
721 return false;
722 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
723 return false;
724 return id[ATA_ID_CFS_ENABLE_2] & (1 << 10);
725 }
726
727 static inline bool ata_id_hpa_enabled(const u16 *id)
728 {
729 /* Yes children, word 83 valid bits cover word 82 data */
730 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
731 return false;
732 /* And 87 covers 85-87 */
733 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
734 return false;
735 /* Check command sets enabled as well as supported */
736 if ((id[ATA_ID_CFS_ENABLE_1] & (1 << 10)) == 0)
737 return false;
738 return id[ATA_ID_COMMAND_SET_1] & (1 << 10);
739 }
740
741 static inline bool ata_id_has_wcache(const u16 *id)
742 {
743 /* Yes children, word 83 valid bits cover word 82 data */
744 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
745 return false;
746 return id[ATA_ID_COMMAND_SET_1] & (1 << 5);
747 }
748
749 static inline bool ata_id_has_pm(const u16 *id)
750 {
751 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
752 return false;
753 return id[ATA_ID_COMMAND_SET_1] & (1 << 3);
754 }
755
756 static inline bool ata_id_rahead_enabled(const u16 *id)
757 {
758 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
759 return false;
760 return id[ATA_ID_CFS_ENABLE_1] & (1 << 6);
761 }
762
763 static inline bool ata_id_wcache_enabled(const u16 *id)
764 {
765 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
766 return false;
767 return id[ATA_ID_CFS_ENABLE_1] & (1 << 5);
768 }
769
770 static inline bool ata_id_has_read_log_dma_ext(const u16 *id)
771 {
772 /* Word 86 must have bit 15 set */
773 if (!(id[ATA_ID_CFS_ENABLE_2] & (1 << 15)))
774 return false;
775
776 /* READ LOG DMA EXT support can be signaled either from word 119
777 * or from word 120. The format is the same for both words: Bit
778 * 15 must be cleared, bit 14 set and bit 3 set.
779 */
780 if ((id[ATA_ID_COMMAND_SET_3] & 0xC008) == 0x4008 ||
781 (id[ATA_ID_COMMAND_SET_4] & 0xC008) == 0x4008)
782 return true;
783
784 return false;
785 }
786
787 static inline bool ata_id_has_sense_reporting(const u16 *id)
788 {
789 if (!(id[ATA_ID_CFS_ENABLE_2] & (1 << 15)))
790 return false;
791 return id[ATA_ID_COMMAND_SET_3] & (1 << 6);
792 }
793
794 static inline bool ata_id_sense_reporting_enabled(const u16 *id)
795 {
796 if (!(id[ATA_ID_CFS_ENABLE_2] & (1 << 15)))
797 return false;
798 return id[ATA_ID_COMMAND_SET_4] & (1 << 6);
799 }
800
801 /**
802 *
803 * Word: 206 - SCT Command Transport
804 * 15:12 - Vendor Specific
805 * 11:6 - Reserved
806 * 5 - SCT Command Transport Data Tables supported
807 * 4 - SCT Command Transport Features Control supported
808 * 3 - SCT Command Transport Error Recovery Control supported
809 * 2 - SCT Command Transport Write Same supported
810 * 1 - SCT Command Transport Long Sector Access supported
811 * 0 - SCT Command Transport supported
812 */
813 static inline bool ata_id_sct_data_tables(const u16 *id)
814 {
815 return id[ATA_ID_SCT_CMD_XPORT] & (1 << 5) ? true : false;
816 }
817
818 static inline bool ata_id_sct_features_ctrl(const u16 *id)
819 {
820 return id[ATA_ID_SCT_CMD_XPORT] & (1 << 4) ? true : false;
821 }
822
823 static inline bool ata_id_sct_error_recovery_ctrl(const u16 *id)
824 {
825 return id[ATA_ID_SCT_CMD_XPORT] & (1 << 3) ? true : false;
826 }
827
828 static inline bool ata_id_sct_long_sector_access(const u16 *id)
829 {
830 return id[ATA_ID_SCT_CMD_XPORT] & (1 << 1) ? true : false;
831 }
832
833 static inline bool ata_id_sct_supported(const u16 *id)
834 {
835 return id[ATA_ID_SCT_CMD_XPORT] & (1 << 0) ? true : false;
836 }
837
838 /**
839 * ata_id_major_version - get ATA level of drive
840 * @id: Identify data
841 *
842 * Caveats:
843 * ATA-1 considers identify optional
844 * ATA-2 introduces mandatory identify
845 * ATA-3 introduces word 80 and accurate reporting
846 *
847 * The practical impact of this is that ata_id_major_version cannot
848 * reliably report on drives below ATA3.
849 */
850
851 static inline unsigned int ata_id_major_version(const u16 *id)
852 {
853 unsigned int mver;
854
855 if (id[ATA_ID_MAJOR_VER] == 0xFFFF)
856 return 0;
857
858 for (mver = 14; mver >= 1; mver--)
859 if (id[ATA_ID_MAJOR_VER] & (1 << mver))
860 break;
861 return mver;
862 }
863
864 static inline bool ata_id_is_sata(const u16 *id)
865 {
866 /*
867 * See if word 93 is 0 AND drive is at least ATA-5 compatible
868 * verifying that word 80 by casting it to a signed type --
869 * this trick allows us to filter out the reserved values of
870 * 0x0000 and 0xffff along with the earlier ATA revisions...
871 */
872 if (id[ATA_ID_HW_CONFIG] == 0 && (short)id[ATA_ID_MAJOR_VER] >= 0x0020)
873 return true;
874 return false;
875 }
876
877 static inline bool ata_id_has_tpm(const u16 *id)
878 {
879 /* The TPM bits are only valid on ATA8 */
880 if (ata_id_major_version(id) < 8)
881 return false;
882 if ((id[48] & 0xC000) != 0x4000)
883 return false;
884 return id[48] & (1 << 0);
885 }
886
887 static inline bool ata_id_has_dword_io(const u16 *id)
888 {
889 /* ATA 8 reuses this flag for "trusted" computing */
890 if (ata_id_major_version(id) > 7)
891 return false;
892 return id[ATA_ID_DWORD_IO] & (1 << 0);
893 }
894
895 static inline bool ata_id_has_trusted(const u16 *id)
896 {
897 if (ata_id_major_version(id) <= 7)
898 return false;
899 return id[ATA_ID_TRUSTED] & (1 << 0);
900 }
901
902 static inline bool ata_id_has_unload(const u16 *id)
903 {
904 if (ata_id_major_version(id) >= 7 &&
905 (id[ATA_ID_CFSSE] & 0xC000) == 0x4000 &&
906 id[ATA_ID_CFSSE] & (1 << 13))
907 return true;
908 return false;
909 }
910
911 static inline bool ata_id_has_wwn(const u16 *id)
912 {
913 return (id[ATA_ID_CSF_DEFAULT] & 0xC100) == 0x4100;
914 }
915
916 static inline int ata_id_form_factor(const u16 *id)
917 {
918 u16 val = id[168];
919
920 if (ata_id_major_version(id) < 7 || val == 0 || val == 0xffff)
921 return 0;
922
923 val &= 0xf;
924
925 if (val > 5)
926 return 0;
927
928 return val;
929 }
930
931 static inline int ata_id_rotation_rate(const u16 *id)
932 {
933 u16 val = id[217];
934
935 if (ata_id_major_version(id) < 7 || val == 0 || val == 0xffff)
936 return 0;
937
938 if (val > 1 && val < 0x401)
939 return 0;
940
941 return val;
942 }
943
944 static inline bool ata_id_has_ncq_send_and_recv(const u16 *id)
945 {
946 return id[ATA_ID_SATA_CAPABILITY_2] & BIT(6);
947 }
948
949 static inline bool ata_id_has_ncq_non_data(const u16 *id)
950 {
951 return id[ATA_ID_SATA_CAPABILITY_2] & BIT(5);
952 }
953
954 static inline bool ata_id_has_ncq_prio(const u16 *id)
955 {
956 return id[ATA_ID_SATA_CAPABILITY] & BIT(12);
957 }
958
959 static inline bool ata_id_has_trim(const u16 *id)
960 {
961 if (ata_id_major_version(id) >= 7 &&
962 (id[ATA_ID_DATA_SET_MGMT] & 1))
963 return true;
964 return false;
965 }
966
967 static inline bool ata_id_has_zero_after_trim(const u16 *id)
968 {
969 /* DSM supported, deterministic read, and read zero after trim set */
970 if (ata_id_has_trim(id) &&
971 (id[ATA_ID_ADDITIONAL_SUPP] & 0x4020) == 0x4020)
972 return true;
973
974 return false;
975 }
976
977 static inline bool ata_id_current_chs_valid(const u16 *id)
978 {
979 /* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command
980 has not been issued to the device then the values of
981 id[ATA_ID_CUR_CYLS] to id[ATA_ID_CUR_SECTORS] are vendor specific. */
982 return (id[ATA_ID_FIELD_VALID] & 1) && /* Current translation valid */
983 id[ATA_ID_CUR_CYLS] && /* cylinders in current translation */
984 id[ATA_ID_CUR_HEADS] && /* heads in current translation */
985 id[ATA_ID_CUR_HEADS] <= 16 &&
986 id[ATA_ID_CUR_SECTORS]; /* sectors in current translation */
987 }
988
989 static inline bool ata_id_is_cfa(const u16 *id)
990 {
991 if ((id[ATA_ID_CONFIG] == 0x848A) || /* Traditional CF */
992 (id[ATA_ID_CONFIG] == 0x844A)) /* Delkin Devices CF */
993 return true;
994 /*
995 * CF specs don't require specific value in the word 0 anymore and yet
996 * they forbid to report the ATA version in the word 80 and require the
997 * CFA feature set support to be indicated in the word 83 in this case.
998 * Unfortunately, some cards only follow either of this requirements,
999 * and while those that don't indicate CFA feature support need some
1000 * sort of quirk list, it seems impractical for the ones that do...
1001 */
1002 return (id[ATA_ID_COMMAND_SET_2] & 0xC004) == 0x4004;
1003 }
1004
1005 static inline bool ata_id_is_ssd(const u16 *id)
1006 {
1007 return id[ATA_ID_ROT_SPEED] == 0x01;
1008 }
1009
1010 static inline u8 ata_id_zoned_cap(const u16 *id)
1011 {
1012 return (id[ATA_ID_ADDITIONAL_SUPP] & 0x3);
1013 }
1014
1015 static inline bool ata_id_pio_need_iordy(const u16 *id, const u8 pio)
1016 {
1017 /* CF spec. r4.1 Table 22 says no IORDY on PIO5 and PIO6. */
1018 if (pio > 4 && ata_id_is_cfa(id))
1019 return false;
1020 /* For PIO3 and higher it is mandatory. */
1021 if (pio > 2)
1022 return true;
1023 /* Turn it on when possible. */
1024 return ata_id_has_iordy(id);
1025 }
1026
1027 static inline bool ata_drive_40wire(const u16 *dev_id)
1028 {
1029 if (ata_id_is_sata(dev_id))
1030 return false; /* SATA */
1031 if ((dev_id[ATA_ID_HW_CONFIG] & 0xE000) == 0x6000)
1032 return false; /* 80 wire */
1033 return true;
1034 }
1035
1036 static inline bool ata_drive_40wire_relaxed(const u16 *dev_id)
1037 {
1038 if ((dev_id[ATA_ID_HW_CONFIG] & 0x2000) == 0x2000)
1039 return false; /* 80 wire */
1040 return true;
1041 }
1042
1043 static inline int atapi_cdb_len(const u16 *dev_id)
1044 {
1045 u16 tmp = dev_id[ATA_ID_CONFIG] & 0x3;
1046 switch (tmp) {
1047 case 0: return 12;
1048 case 1: return 16;
1049 default: return -1;
1050 }
1051 }
1052
1053 static inline int atapi_command_packet_set(const u16 *dev_id)
1054 {
1055 return (dev_id[ATA_ID_CONFIG] >> 8) & 0x1f;
1056 }
1057
1058 static inline bool atapi_id_dmadir(const u16 *dev_id)
1059 {
1060 return ata_id_major_version(dev_id) >= 7 && (dev_id[62] & 0x8000);
1061 }
1062
1063 /*
1064 * ata_id_is_lba_capacity_ok() performs a sanity check on
1065 * the claimed LBA capacity value for the device.
1066 *
1067 * Returns 1 if LBA capacity looks sensible, 0 otherwise.
1068 *
1069 * It is called only once for each device.
1070 */
1071 static inline bool ata_id_is_lba_capacity_ok(u16 *id)
1072 {
1073 unsigned long lba_sects, chs_sects, head, tail;
1074
1075 /* No non-LBA info .. so valid! */
1076 if (id[ATA_ID_CYLS] == 0)
1077 return true;
1078
1079 lba_sects = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
1080
1081 /*
1082 * The ATA spec tells large drives to return
1083 * C/H/S = 16383/16/63 independent of their size.
1084 * Some drives can be jumpered to use 15 heads instead of 16.
1085 * Some drives can be jumpered to use 4092 cyls instead of 16383.
1086 */
1087 if ((id[ATA_ID_CYLS] == 16383 ||
1088 (id[ATA_ID_CYLS] == 4092 && id[ATA_ID_CUR_CYLS] == 16383)) &&
1089 id[ATA_ID_SECTORS] == 63 &&
1090 (id[ATA_ID_HEADS] == 15 || id[ATA_ID_HEADS] == 16) &&
1091 (lba_sects >= 16383 * 63 * id[ATA_ID_HEADS]))
1092 return true;
1093
1094 chs_sects = id[ATA_ID_CYLS] * id[ATA_ID_HEADS] * id[ATA_ID_SECTORS];
1095
1096 /* perform a rough sanity check on lba_sects: within 10% is OK */
1097 if (lba_sects - chs_sects < chs_sects/10)
1098 return true;
1099
1100 /* some drives have the word order reversed */
1101 head = (lba_sects >> 16) & 0xffff;
1102 tail = lba_sects & 0xffff;
1103 lba_sects = head | (tail << 16);
1104
1105 if (lba_sects - chs_sects < chs_sects/10) {
1106 *(__le32 *)&id[ATA_ID_LBA_CAPACITY] = __cpu_to_le32(lba_sects);
1107 return true; /* LBA capacity is (now) good */
1108 }
1109
1110 return false; /* LBA capacity value may be bad */
1111 }
1112
1113 static inline void ata_id_to_hd_driveid(u16 *id)
1114 {
1115 #ifdef __BIG_ENDIAN
1116 /* accessed in struct hd_driveid as 8-bit values */
1117 id[ATA_ID_MAX_MULTSECT] = __cpu_to_le16(id[ATA_ID_MAX_MULTSECT]);
1118 id[ATA_ID_CAPABILITY] = __cpu_to_le16(id[ATA_ID_CAPABILITY]);
1119 id[ATA_ID_OLD_PIO_MODES] = __cpu_to_le16(id[ATA_ID_OLD_PIO_MODES]);
1120 id[ATA_ID_OLD_DMA_MODES] = __cpu_to_le16(id[ATA_ID_OLD_DMA_MODES]);
1121 id[ATA_ID_MULTSECT] = __cpu_to_le16(id[ATA_ID_MULTSECT]);
1122
1123 /* as 32-bit values */
1124 *(u32 *)&id[ATA_ID_LBA_CAPACITY] = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
1125 *(u32 *)&id[ATA_ID_SPG] = ata_id_u32(id, ATA_ID_SPG);
1126
1127 /* as 64-bit value */
1128 *(u64 *)&id[ATA_ID_LBA_CAPACITY_2] =
1129 ata_id_u64(id, ATA_ID_LBA_CAPACITY_2);
1130 #endif
1131 }
1132
1133 static inline bool ata_ok(u8 status)
1134 {
1135 return ((status & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ | ATA_ERR))
1136 == ATA_DRDY);
1137 }
1138
1139 static inline bool lba_28_ok(u64 block, u32 n_block)
1140 {
1141 /* check the ending block number: must be LESS THAN 0x0fffffff */
1142 return ((block + n_block) < ((1 << 28) - 1)) && (n_block <= ATA_MAX_SECTORS);
1143 }
1144
1145 static inline bool lba_48_ok(u64 block, u32 n_block)
1146 {
1147 /* check the ending block number */
1148 return ((block + n_block - 1) < ((u64)1 << 48)) && (n_block <= ATA_MAX_SECTORS_LBA48);
1149 }
1150
1151 #define sata_pmp_gscr_vendor(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] & 0xffff)
1152 #define sata_pmp_gscr_devid(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] >> 16)
1153 #define sata_pmp_gscr_rev(gscr) (((gscr)[SATA_PMP_GSCR_REV] >> 8) & 0xff)
1154 #define sata_pmp_gscr_ports(gscr) ((gscr)[SATA_PMP_GSCR_PORT_INFO] & 0xf)
1155
1156 #endif /* __LINUX_ATA_H__ */
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