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1/* SPDX-License-Identifier: GPL-2.0-or-later */
2
3/*
4 * Copyright 2003-2004 Red Hat, Inc. All rights reserved.
5 * Copyright 2003-2004 Jeff Garzik
6 *
7 * libata documentation is available via 'make {ps|pdf}docs',
8 * as Documentation/driver-api/libata.rst
9 *
10 * Hardware documentation available from http://www.t13.org/
11 */
12
13#ifndef __LINUX_ATA_H__
14#define __LINUX_ATA_H__
15
16#include <linux/bits.h>
17#include <linux/string.h>
18#include <linux/types.h>
19#include <asm/byteorder.h>
20
21/* defines only for the constants which don't work well as enums */
22#define ATA_DMA_BOUNDARY 0xffffUL
23#define ATA_DMA_MASK 0xffffffffULL
24
25enum {
26 /* various global constants */
27 ATA_MAX_DEVICES = 2, /* per bus/port */
28 ATA_MAX_PRD = 256, /* we could make these 256/256 */
29 ATA_SECT_SIZE = 512,
30 ATA_MAX_SECTORS_128 = 128,
31 ATA_MAX_SECTORS = 256,
32 ATA_MAX_SECTORS_1024 = 1024,
33 ATA_MAX_SECTORS_LBA48 = 65535,/* avoid count to be 0000h */
34 ATA_MAX_SECTORS_TAPE = 65535,
35 ATA_MAX_TRIM_RNUM = 64, /* 512-byte payload / (6-byte LBA + 2-byte range per entry) */
36
37 ATA_ID_WORDS = 256,
38 ATA_ID_CONFIG = 0,
39 ATA_ID_CYLS = 1,
40 ATA_ID_HEADS = 3,
41 ATA_ID_SECTORS = 6,
42 ATA_ID_SERNO = 10,
43 ATA_ID_BUF_SIZE = 21,
44 ATA_ID_FW_REV = 23,
45 ATA_ID_PROD = 27,
46 ATA_ID_MAX_MULTSECT = 47,
47 ATA_ID_DWORD_IO = 48, /* before ATA-8 */
48 ATA_ID_TRUSTED = 48, /* ATA-8 and later */
49 ATA_ID_CAPABILITY = 49,
50 ATA_ID_OLD_PIO_MODES = 51,
51 ATA_ID_OLD_DMA_MODES = 52,
52 ATA_ID_FIELD_VALID = 53,
53 ATA_ID_CUR_CYLS = 54,
54 ATA_ID_CUR_HEADS = 55,
55 ATA_ID_CUR_SECTORS = 56,
56 ATA_ID_MULTSECT = 59,
57 ATA_ID_LBA_CAPACITY = 60,
58 ATA_ID_SWDMA_MODES = 62,
59 ATA_ID_MWDMA_MODES = 63,
60 ATA_ID_PIO_MODES = 64,
61 ATA_ID_EIDE_DMA_MIN = 65,
62 ATA_ID_EIDE_DMA_TIME = 66,
63 ATA_ID_EIDE_PIO = 67,
64 ATA_ID_EIDE_PIO_IORDY = 68,
65 ATA_ID_ADDITIONAL_SUPP = 69,
66 ATA_ID_QUEUE_DEPTH = 75,
67 ATA_ID_SATA_CAPABILITY = 76,
68 ATA_ID_SATA_CAPABILITY_2 = 77,
69 ATA_ID_FEATURE_SUPP = 78,
70 ATA_ID_MAJOR_VER = 80,
71 ATA_ID_COMMAND_SET_1 = 82,
72 ATA_ID_COMMAND_SET_2 = 83,
73 ATA_ID_CFSSE = 84,
74 ATA_ID_CFS_ENABLE_1 = 85,
75 ATA_ID_CFS_ENABLE_2 = 86,
76 ATA_ID_CSF_DEFAULT = 87,
77 ATA_ID_UDMA_MODES = 88,
78 ATA_ID_HW_CONFIG = 93,
79 ATA_ID_SPG = 98,
80 ATA_ID_LBA_CAPACITY_2 = 100,
81 ATA_ID_SECTOR_SIZE = 106,
82 ATA_ID_WWN = 108,
83 ATA_ID_LOGICAL_SECTOR_SIZE = 117, /* and 118 */
84 ATA_ID_COMMAND_SET_3 = 119,
85 ATA_ID_COMMAND_SET_4 = 120,
86 ATA_ID_LAST_LUN = 126,
87 ATA_ID_DLF = 128,
88 ATA_ID_CSFO = 129,
89 ATA_ID_CFA_POWER = 160,
90 ATA_ID_CFA_KEY_MGMT = 162,
91 ATA_ID_CFA_MODES = 163,
92 ATA_ID_DATA_SET_MGMT = 169,
93 ATA_ID_SCT_CMD_XPORT = 206,
94 ATA_ID_ROT_SPEED = 217,
95 ATA_ID_PIO4 = (1 << 1),
96
97 ATA_ID_SERNO_LEN = 20,
98 ATA_ID_FW_REV_LEN = 8,
99 ATA_ID_PROD_LEN = 40,
100 ATA_ID_WWN_LEN = 8,
101
102 ATA_PCI_CTL_OFS = 2,
103
104 ATA_PIO0 = (1 << 0),
105 ATA_PIO1 = ATA_PIO0 | (1 << 1),
106 ATA_PIO2 = ATA_PIO1 | (1 << 2),
107 ATA_PIO3 = ATA_PIO2 | (1 << 3),
108 ATA_PIO4 = ATA_PIO3 | (1 << 4),
109 ATA_PIO5 = ATA_PIO4 | (1 << 5),
110 ATA_PIO6 = ATA_PIO5 | (1 << 6),
111
112 ATA_PIO4_ONLY = (1 << 4),
113
114 ATA_SWDMA0 = (1 << 0),
115 ATA_SWDMA1 = ATA_SWDMA0 | (1 << 1),
116 ATA_SWDMA2 = ATA_SWDMA1 | (1 << 2),
117
118 ATA_SWDMA2_ONLY = (1 << 2),
119
120 ATA_MWDMA0 = (1 << 0),
121 ATA_MWDMA1 = ATA_MWDMA0 | (1 << 1),
122 ATA_MWDMA2 = ATA_MWDMA1 | (1 << 2),
123 ATA_MWDMA3 = ATA_MWDMA2 | (1 << 3),
124 ATA_MWDMA4 = ATA_MWDMA3 | (1 << 4),
125
126 ATA_MWDMA12_ONLY = (1 << 1) | (1 << 2),
127 ATA_MWDMA2_ONLY = (1 << 2),
128
129 ATA_UDMA0 = (1 << 0),
130 ATA_UDMA1 = ATA_UDMA0 | (1 << 1),
131 ATA_UDMA2 = ATA_UDMA1 | (1 << 2),
132 ATA_UDMA3 = ATA_UDMA2 | (1 << 3),
133 ATA_UDMA4 = ATA_UDMA3 | (1 << 4),
134 ATA_UDMA5 = ATA_UDMA4 | (1 << 5),
135 ATA_UDMA6 = ATA_UDMA5 | (1 << 6),
136 ATA_UDMA7 = ATA_UDMA6 | (1 << 7),
137 /* ATA_UDMA7 is just for completeness... doesn't exist (yet?). */
138
139 ATA_UDMA24_ONLY = (1 << 2) | (1 << 4),
140
141 ATA_UDMA_MASK_40C = ATA_UDMA2, /* udma0-2 */
142
143 /* DMA-related */
144 ATA_PRD_SZ = 8,
145 ATA_PRD_TBL_SZ = (ATA_MAX_PRD * ATA_PRD_SZ),
146 ATA_PRD_EOT = (1 << 31), /* end-of-table flag */
147
148 ATA_DMA_TABLE_OFS = 4,
149 ATA_DMA_STATUS = 2,
150 ATA_DMA_CMD = 0,
151 ATA_DMA_WR = (1 << 3),
152 ATA_DMA_START = (1 << 0),
153 ATA_DMA_INTR = (1 << 2),
154 ATA_DMA_ERR = (1 << 1),
155 ATA_DMA_ACTIVE = (1 << 0),
156
157 /* bits in ATA command block registers */
158 ATA_HOB = (1 << 7), /* LBA48 selector */
159 ATA_NIEN = (1 << 1), /* disable-irq flag */
160 ATA_LBA = (1 << 6), /* LBA28 selector */
161 ATA_DEV1 = (1 << 4), /* Select Device 1 (slave) */
162 ATA_DEVICE_OBS = (1 << 7) | (1 << 5), /* obs bits in dev reg */
163 ATA_DEVCTL_OBS = (1 << 3), /* obsolete bit in devctl reg */
164 ATA_BUSY = (1 << 7), /* BSY status bit */
165 ATA_DRDY = (1 << 6), /* device ready */
166 ATA_DF = (1 << 5), /* device fault */
167 ATA_DSC = (1 << 4), /* drive seek complete */
168 ATA_DRQ = (1 << 3), /* data request i/o */
169 ATA_CORR = (1 << 2), /* corrected data error */
170 ATA_SENSE = (1 << 1), /* sense code available */
171 ATA_ERR = (1 << 0), /* have an error */
172 ATA_SRST = (1 << 2), /* software reset */
173 ATA_ICRC = (1 << 7), /* interface CRC error */
174 ATA_BBK = ATA_ICRC, /* pre-EIDE: block marked bad */
175 ATA_UNC = (1 << 6), /* uncorrectable media error */
176 ATA_MC = (1 << 5), /* media changed */
177 ATA_IDNF = (1 << 4), /* ID not found */
178 ATA_MCR = (1 << 3), /* media change requested */
179 ATA_ABORTED = (1 << 2), /* command aborted */
180 ATA_TRK0NF = (1 << 1), /* track 0 not found */
181 ATA_AMNF = (1 << 0), /* address mark not found */
182 ATAPI_LFS = 0xF0, /* last failed sense */
183 ATAPI_EOM = ATA_TRK0NF, /* end of media */
184 ATAPI_ILI = ATA_AMNF, /* illegal length indication */
185 ATAPI_IO = (1 << 1),
186 ATAPI_COD = (1 << 0),
187
188 /* ATA command block registers */
189 ATA_REG_DATA = 0x00,
190 ATA_REG_ERR = 0x01,
191 ATA_REG_NSECT = 0x02,
192 ATA_REG_LBAL = 0x03,
193 ATA_REG_LBAM = 0x04,
194 ATA_REG_LBAH = 0x05,
195 ATA_REG_DEVICE = 0x06,
196 ATA_REG_STATUS = 0x07,
197
198 ATA_REG_FEATURE = ATA_REG_ERR, /* and their aliases */
199 ATA_REG_CMD = ATA_REG_STATUS,
200 ATA_REG_BYTEL = ATA_REG_LBAM,
201 ATA_REG_BYTEH = ATA_REG_LBAH,
202 ATA_REG_DEVSEL = ATA_REG_DEVICE,
203 ATA_REG_IRQ = ATA_REG_NSECT,
204
205 /* ATA device commands */
206 ATA_CMD_DEV_RESET = 0x08, /* ATAPI device reset */
207 ATA_CMD_CHK_POWER = 0xE5, /* check power mode */
208 ATA_CMD_STANDBY = 0xE2, /* place in standby power mode */
209 ATA_CMD_IDLE = 0xE3, /* place in idle power mode */
210 ATA_CMD_EDD = 0x90, /* execute device diagnostic */
211 ATA_CMD_DOWNLOAD_MICRO = 0x92,
212 ATA_CMD_DOWNLOAD_MICRO_DMA = 0x93,
213 ATA_CMD_NOP = 0x00,
214 ATA_CMD_FLUSH = 0xE7,
215 ATA_CMD_FLUSH_EXT = 0xEA,
216 ATA_CMD_ID_ATA = 0xEC,
217 ATA_CMD_ID_ATAPI = 0xA1,
218 ATA_CMD_SERVICE = 0xA2,
219 ATA_CMD_READ = 0xC8,
220 ATA_CMD_READ_EXT = 0x25,
221 ATA_CMD_READ_QUEUED = 0x26,
222 ATA_CMD_READ_STREAM_EXT = 0x2B,
223 ATA_CMD_READ_STREAM_DMA_EXT = 0x2A,
224 ATA_CMD_WRITE = 0xCA,
225 ATA_CMD_WRITE_EXT = 0x35,
226 ATA_CMD_WRITE_QUEUED = 0x36,
227 ATA_CMD_WRITE_STREAM_EXT = 0x3B,
228 ATA_CMD_WRITE_STREAM_DMA_EXT = 0x3A,
229 ATA_CMD_WRITE_FUA_EXT = 0x3D,
230 ATA_CMD_WRITE_QUEUED_FUA_EXT = 0x3E,
231 ATA_CMD_FPDMA_READ = 0x60,
232 ATA_CMD_FPDMA_WRITE = 0x61,
233 ATA_CMD_NCQ_NON_DATA = 0x63,
234 ATA_CMD_FPDMA_SEND = 0x64,
235 ATA_CMD_FPDMA_RECV = 0x65,
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_NONDATA = 0x5B,
264 ATA_CMD_TRUSTED_RCV = 0x5C,
265 ATA_CMD_TRUSTED_RCV_DMA = 0x5D,
266 ATA_CMD_TRUSTED_SND = 0x5E,
267 ATA_CMD_TRUSTED_SND_DMA = 0x5F,
268 ATA_CMD_PMP_READ = 0xE4,
269 ATA_CMD_PMP_READ_DMA = 0xE9,
270 ATA_CMD_PMP_WRITE = 0xE8,
271 ATA_CMD_PMP_WRITE_DMA = 0xEB,
272 ATA_CMD_CONF_OVERLAY = 0xB1,
273 ATA_CMD_SEC_SET_PASS = 0xF1,
274 ATA_CMD_SEC_UNLOCK = 0xF2,
275 ATA_CMD_SEC_ERASE_PREP = 0xF3,
276 ATA_CMD_SEC_ERASE_UNIT = 0xF4,
277 ATA_CMD_SEC_FREEZE_LOCK = 0xF5,
278 ATA_CMD_SEC_DISABLE_PASS = 0xF6,
279 ATA_CMD_CONFIG_STREAM = 0x51,
280 ATA_CMD_SMART = 0xB0,
281 ATA_CMD_MEDIA_LOCK = 0xDE,
282 ATA_CMD_MEDIA_UNLOCK = 0xDF,
283 ATA_CMD_DSM = 0x06,
284 ATA_CMD_CHK_MED_CRD_TYP = 0xD1,
285 ATA_CMD_CFA_REQ_EXT_ERR = 0x03,
286 ATA_CMD_CFA_WRITE_NE = 0x38,
287 ATA_CMD_CFA_TRANS_SECT = 0x87,
288 ATA_CMD_CFA_ERASE = 0xC0,
289 ATA_CMD_CFA_WRITE_MULT_NE = 0xCD,
290 ATA_CMD_REQ_SENSE_DATA = 0x0B,
291 ATA_CMD_SANITIZE_DEVICE = 0xB4,
292 ATA_CMD_ZAC_MGMT_IN = 0x4A,
293 ATA_CMD_ZAC_MGMT_OUT = 0x9F,
294
295 /* marked obsolete in the ATA/ATAPI-7 spec */
296 ATA_CMD_RESTORE = 0x10,
297
298 /* Subcmds for ATA_CMD_FPDMA_RECV */
299 ATA_SUBCMD_FPDMA_RECV_RD_LOG_DMA_EXT = 0x01,
300 ATA_SUBCMD_FPDMA_RECV_ZAC_MGMT_IN = 0x02,
301
302 /* Subcmds for ATA_CMD_FPDMA_SEND */
303 ATA_SUBCMD_FPDMA_SEND_DSM = 0x00,
304 ATA_SUBCMD_FPDMA_SEND_WR_LOG_DMA_EXT = 0x02,
305
306 /* Subcmds for ATA_CMD_NCQ_NON_DATA */
307 ATA_SUBCMD_NCQ_NON_DATA_ABORT_QUEUE = 0x00,
308 ATA_SUBCMD_NCQ_NON_DATA_SET_FEATURES = 0x05,
309 ATA_SUBCMD_NCQ_NON_DATA_ZERO_EXT = 0x06,
310 ATA_SUBCMD_NCQ_NON_DATA_ZAC_MGMT_OUT = 0x07,
311
312 /* Subcmds for ATA_CMD_ZAC_MGMT_IN */
313 ATA_SUBCMD_ZAC_MGMT_IN_REPORT_ZONES = 0x00,
314
315 /* Subcmds for ATA_CMD_ZAC_MGMT_OUT */
316 ATA_SUBCMD_ZAC_MGMT_OUT_CLOSE_ZONE = 0x01,
317 ATA_SUBCMD_ZAC_MGMT_OUT_FINISH_ZONE = 0x02,
318 ATA_SUBCMD_ZAC_MGMT_OUT_OPEN_ZONE = 0x03,
319 ATA_SUBCMD_ZAC_MGMT_OUT_RESET_WRITE_POINTER = 0x04,
320
321 /* READ_LOG_EXT pages */
322 ATA_LOG_DIRECTORY = 0x0,
323 ATA_LOG_SATA_NCQ = 0x10,
324 ATA_LOG_NCQ_NON_DATA = 0x12,
325 ATA_LOG_NCQ_SEND_RECV = 0x13,
326 ATA_LOG_IDENTIFY_DEVICE = 0x30,
327
328 /* Identify device log pages: */
329 ATA_LOG_SECURITY = 0x06,
330 ATA_LOG_SATA_SETTINGS = 0x08,
331 ATA_LOG_ZONED_INFORMATION = 0x09,
332
333 /* Identify device SATA settings log:*/
334 ATA_LOG_DEVSLP_OFFSET = 0x30,
335 ATA_LOG_DEVSLP_SIZE = 0x08,
336 ATA_LOG_DEVSLP_MDAT = 0x00,
337 ATA_LOG_DEVSLP_MDAT_MASK = 0x1F,
338 ATA_LOG_DEVSLP_DETO = 0x01,
339 ATA_LOG_DEVSLP_VALID = 0x07,
340 ATA_LOG_DEVSLP_VALID_MASK = 0x80,
341 ATA_LOG_NCQ_PRIO_OFFSET = 0x09,
342
343 /* NCQ send and receive log */
344 ATA_LOG_NCQ_SEND_RECV_SUBCMDS_OFFSET = 0x00,
345 ATA_LOG_NCQ_SEND_RECV_SUBCMDS_DSM = (1 << 0),
346 ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET = 0x04,
347 ATA_LOG_NCQ_SEND_RECV_DSM_TRIM = (1 << 0),
348 ATA_LOG_NCQ_SEND_RECV_RD_LOG_OFFSET = 0x08,
349 ATA_LOG_NCQ_SEND_RECV_RD_LOG_SUPPORTED = (1 << 0),
350 ATA_LOG_NCQ_SEND_RECV_WR_LOG_OFFSET = 0x0C,
351 ATA_LOG_NCQ_SEND_RECV_WR_LOG_SUPPORTED = (1 << 0),
352 ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_OFFSET = 0x10,
353 ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_OUT_SUPPORTED = (1 << 0),
354 ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_IN_SUPPORTED = (1 << 1),
355 ATA_LOG_NCQ_SEND_RECV_SIZE = 0x14,
356
357 /* NCQ Non-Data log */
358 ATA_LOG_NCQ_NON_DATA_SUBCMDS_OFFSET = 0x00,
359 ATA_LOG_NCQ_NON_DATA_ABORT_OFFSET = 0x00,
360 ATA_LOG_NCQ_NON_DATA_ABORT_NCQ = (1 << 0),
361 ATA_LOG_NCQ_NON_DATA_ABORT_ALL = (1 << 1),
362 ATA_LOG_NCQ_NON_DATA_ABORT_STREAMING = (1 << 2),
363 ATA_LOG_NCQ_NON_DATA_ABORT_NON_STREAMING = (1 << 3),
364 ATA_LOG_NCQ_NON_DATA_ABORT_SELECTED = (1 << 4),
365 ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OFFSET = 0x1C,
366 ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OUT = (1 << 0),
367 ATA_LOG_NCQ_NON_DATA_SIZE = 0x40,
368
369 /* READ/WRITE LONG (obsolete) */
370 ATA_CMD_READ_LONG = 0x22,
371 ATA_CMD_READ_LONG_ONCE = 0x23,
372 ATA_CMD_WRITE_LONG = 0x32,
373 ATA_CMD_WRITE_LONG_ONCE = 0x33,
374
375 /* SETFEATURES stuff */
376 SETFEATURES_XFER = 0x03,
377 XFER_UDMA_7 = 0x47,
378 XFER_UDMA_6 = 0x46,
379 XFER_UDMA_5 = 0x45,
380 XFER_UDMA_4 = 0x44,
381 XFER_UDMA_3 = 0x43,
382 XFER_UDMA_2 = 0x42,
383 XFER_UDMA_1 = 0x41,
384 XFER_UDMA_0 = 0x40,
385 XFER_MW_DMA_4 = 0x24, /* CFA only */
386 XFER_MW_DMA_3 = 0x23, /* CFA only */
387 XFER_MW_DMA_2 = 0x22,
388 XFER_MW_DMA_1 = 0x21,
389 XFER_MW_DMA_0 = 0x20,
390 XFER_SW_DMA_2 = 0x12,
391 XFER_SW_DMA_1 = 0x11,
392 XFER_SW_DMA_0 = 0x10,
393 XFER_PIO_6 = 0x0E, /* CFA only */
394 XFER_PIO_5 = 0x0D, /* CFA only */
395 XFER_PIO_4 = 0x0C,
396 XFER_PIO_3 = 0x0B,
397 XFER_PIO_2 = 0x0A,
398 XFER_PIO_1 = 0x09,
399 XFER_PIO_0 = 0x08,
400 XFER_PIO_SLOW = 0x00,
401
402 SETFEATURES_WC_ON = 0x02, /* Enable write cache */
403 SETFEATURES_WC_OFF = 0x82, /* Disable write cache */
404
405 SETFEATURES_RA_ON = 0xaa, /* Enable read look-ahead */
406 SETFEATURES_RA_OFF = 0x55, /* Disable read look-ahead */
407
408 /* Enable/Disable Automatic Acoustic Management */
409 SETFEATURES_AAM_ON = 0x42,
410 SETFEATURES_AAM_OFF = 0xC2,
411
412 SETFEATURES_SPINUP = 0x07, /* Spin-up drive */
413 SETFEATURES_SPINUP_TIMEOUT = 30000, /* 30s timeout for drive spin-up from PUIS */
414
415 SETFEATURES_SATA_ENABLE = 0x10, /* Enable use of SATA feature */
416 SETFEATURES_SATA_DISABLE = 0x90, /* Disable use of SATA feature */
417
418 /* SETFEATURE Sector counts for SATA features */
419 SATA_FPDMA_OFFSET = 0x01, /* FPDMA non-zero buffer offsets */
420 SATA_FPDMA_AA = 0x02, /* FPDMA Setup FIS Auto-Activate */
421 SATA_DIPM = 0x03, /* Device Initiated Power Management */
422 SATA_FPDMA_IN_ORDER = 0x04, /* FPDMA in-order data delivery */
423 SATA_AN = 0x05, /* Asynchronous Notification */
424 SATA_SSP = 0x06, /* Software Settings Preservation */
425 SATA_DEVSLP = 0x09, /* Device Sleep */
426
427 SETFEATURE_SENSE_DATA = 0xC3, /* Sense Data Reporting feature */
428
429 /* feature values for SET_MAX */
430 ATA_SET_MAX_ADDR = 0x00,
431 ATA_SET_MAX_PASSWD = 0x01,
432 ATA_SET_MAX_LOCK = 0x02,
433 ATA_SET_MAX_UNLOCK = 0x03,
434 ATA_SET_MAX_FREEZE_LOCK = 0x04,
435 ATA_SET_MAX_PASSWD_DMA = 0x05,
436 ATA_SET_MAX_UNLOCK_DMA = 0x06,
437
438 /* feature values for DEVICE CONFIGURATION OVERLAY */
439 ATA_DCO_RESTORE = 0xC0,
440 ATA_DCO_FREEZE_LOCK = 0xC1,
441 ATA_DCO_IDENTIFY = 0xC2,
442 ATA_DCO_SET = 0xC3,
443
444 /* feature values for SMART */
445 ATA_SMART_ENABLE = 0xD8,
446 ATA_SMART_READ_VALUES = 0xD0,
447 ATA_SMART_READ_THRESHOLDS = 0xD1,
448
449 /* feature values for Data Set Management */
450 ATA_DSM_TRIM = 0x01,
451
452 /* password used in LBA Mid / LBA High for executing SMART commands */
453 ATA_SMART_LBAM_PASS = 0x4F,
454 ATA_SMART_LBAH_PASS = 0xC2,
455
456 /* ATAPI stuff */
457 ATAPI_PKT_DMA = (1 << 0),
458 ATAPI_DMADIR = (1 << 2), /* ATAPI data dir:
459 0=to device, 1=to host */
460 ATAPI_CDB_LEN = 16,
461
462 /* PMP stuff */
463 SATA_PMP_MAX_PORTS = 15,
464 SATA_PMP_CTRL_PORT = 15,
465
466 SATA_PMP_GSCR_DWORDS = 128,
467 SATA_PMP_GSCR_PROD_ID = 0,
468 SATA_PMP_GSCR_REV = 1,
469 SATA_PMP_GSCR_PORT_INFO = 2,
470 SATA_PMP_GSCR_ERROR = 32,
471 SATA_PMP_GSCR_ERROR_EN = 33,
472 SATA_PMP_GSCR_FEAT = 64,
473 SATA_PMP_GSCR_FEAT_EN = 96,
474
475 SATA_PMP_PSCR_STATUS = 0,
476 SATA_PMP_PSCR_ERROR = 1,
477 SATA_PMP_PSCR_CONTROL = 2,
478
479 SATA_PMP_FEAT_BIST = (1 << 0),
480 SATA_PMP_FEAT_PMREQ = (1 << 1),
481 SATA_PMP_FEAT_DYNSSC = (1 << 2),
482 SATA_PMP_FEAT_NOTIFY = (1 << 3),
483
484 /* cable types */
485 ATA_CBL_NONE = 0,
486 ATA_CBL_PATA40 = 1,
487 ATA_CBL_PATA80 = 2,
488 ATA_CBL_PATA40_SHORT = 3, /* 40 wire cable to high UDMA spec */
489 ATA_CBL_PATA_UNK = 4, /* don't know, maybe 80c? */
490 ATA_CBL_PATA_IGN = 5, /* don't know, ignore cable handling */
491 ATA_CBL_SATA = 6,
492
493 /* SATA Status and Control Registers */
494 SCR_STATUS = 0,
495 SCR_ERROR = 1,
496 SCR_CONTROL = 2,
497 SCR_ACTIVE = 3,
498 SCR_NOTIFICATION = 4,
499
500 /* SError bits */
501 SERR_DATA_RECOVERED = (1 << 0), /* recovered data error */
502 SERR_COMM_RECOVERED = (1 << 1), /* recovered comm failure */
503 SERR_DATA = (1 << 8), /* unrecovered data error */
504 SERR_PERSISTENT = (1 << 9), /* persistent data/comm error */
505 SERR_PROTOCOL = (1 << 10), /* protocol violation */
506 SERR_INTERNAL = (1 << 11), /* host internal error */
507 SERR_PHYRDY_CHG = (1 << 16), /* PHY RDY changed */
508 SERR_PHY_INT_ERR = (1 << 17), /* PHY internal error */
509 SERR_COMM_WAKE = (1 << 18), /* Comm wake */
510 SERR_10B_8B_ERR = (1 << 19), /* 10b to 8b decode error */
511 SERR_DISPARITY = (1 << 20), /* Disparity */
512 SERR_CRC = (1 << 21), /* CRC error */
513 SERR_HANDSHAKE = (1 << 22), /* Handshake error */
514 SERR_LINK_SEQ_ERR = (1 << 23), /* Link sequence error */
515 SERR_TRANS_ST_ERROR = (1 << 24), /* Transport state trans. error */
516 SERR_UNRECOG_FIS = (1 << 25), /* Unrecognized FIS */
517 SERR_DEV_XCHG = (1 << 26), /* device exchanged */
518};
519
520enum ata_prot_flags {
521 /* protocol flags */
522 ATA_PROT_FLAG_PIO = (1 << 0), /* is PIO */
523 ATA_PROT_FLAG_DMA = (1 << 1), /* is DMA */
524 ATA_PROT_FLAG_NCQ = (1 << 2), /* is NCQ */
525 ATA_PROT_FLAG_ATAPI = (1 << 3), /* is ATAPI */
526
527 /* taskfile protocols */
528 ATA_PROT_UNKNOWN = (u8)-1,
529 ATA_PROT_NODATA = 0,
530 ATA_PROT_PIO = ATA_PROT_FLAG_PIO,
531 ATA_PROT_DMA = ATA_PROT_FLAG_DMA,
532 ATA_PROT_NCQ_NODATA = ATA_PROT_FLAG_NCQ,
533 ATA_PROT_NCQ = ATA_PROT_FLAG_DMA | ATA_PROT_FLAG_NCQ,
534 ATAPI_PROT_NODATA = ATA_PROT_FLAG_ATAPI,
535 ATAPI_PROT_PIO = ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_PIO,
536 ATAPI_PROT_DMA = ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_DMA,
537};
538
539enum ata_ioctls {
540 ATA_IOC_GET_IO32 = 0x309, /* HDIO_GET_32BIT */
541 ATA_IOC_SET_IO32 = 0x324, /* HDIO_SET_32BIT */
542};
543
544/* core structures */
545
546struct ata_bmdma_prd {
547 __le32 addr;
548 __le32 flags_len;
549};
550
551/*
552 * id tests
553 */
554#define ata_id_is_ata(id) (((id)[ATA_ID_CONFIG] & (1 << 15)) == 0)
555#define ata_id_has_lba(id) ((id)[ATA_ID_CAPABILITY] & (1 << 9))
556#define ata_id_has_dma(id) ((id)[ATA_ID_CAPABILITY] & (1 << 8))
557#define ata_id_has_ncq(id) ((id)[ATA_ID_SATA_CAPABILITY] & (1 << 8))
558#define ata_id_queue_depth(id) (((id)[ATA_ID_QUEUE_DEPTH] & 0x1f) + 1)
559#define ata_id_removable(id) ((id)[ATA_ID_CONFIG] & (1 << 7))
560#define ata_id_has_atapi_AN(id) \
561 ((((id)[ATA_ID_SATA_CAPABILITY] != 0x0000) && \
562 ((id)[ATA_ID_SATA_CAPABILITY] != 0xffff)) && \
563 ((id)[ATA_ID_FEATURE_SUPP] & (1 << 5)))
564#define ata_id_has_fpdma_aa(id) \
565 ((((id)[ATA_ID_SATA_CAPABILITY] != 0x0000) && \
566 ((id)[ATA_ID_SATA_CAPABILITY] != 0xffff)) && \
567 ((id)[ATA_ID_FEATURE_SUPP] & (1 << 2)))
568#define ata_id_iordy_disable(id) ((id)[ATA_ID_CAPABILITY] & (1 << 10))
569#define ata_id_has_iordy(id) ((id)[ATA_ID_CAPABILITY] & (1 << 11))
570#define ata_id_u32(id,n) \
571 (((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)]))
572#define ata_id_u64(id,n) \
573 ( ((u64) (id)[(n) + 3] << 48) | \
574 ((u64) (id)[(n) + 2] << 32) | \
575 ((u64) (id)[(n) + 1] << 16) | \
576 ((u64) (id)[(n) + 0]) )
577
578#define ata_id_cdb_intr(id) (((id)[ATA_ID_CONFIG] & 0x60) == 0x20)
579#define ata_id_has_da(id) ((id)[ATA_ID_SATA_CAPABILITY_2] & (1 << 4))
580#define ata_id_has_devslp(id) ((id)[ATA_ID_FEATURE_SUPP] & (1 << 8))
581#define ata_id_has_ncq_autosense(id) \
582 ((id)[ATA_ID_FEATURE_SUPP] & (1 << 7))
583
584static inline bool ata_id_has_hipm(const u16 *id)
585{
586 u16 val = id[ATA_ID_SATA_CAPABILITY];
587
588 if (val == 0 || val == 0xffff)
589 return false;
590
591 return val & (1 << 9);
592}
593
594static inline bool ata_id_has_dipm(const u16 *id)
595{
596 u16 val = id[ATA_ID_FEATURE_SUPP];
597
598 if (val == 0 || val == 0xffff)
599 return false;
600
601 return val & (1 << 3);
602}
603
604
605static inline bool ata_id_has_fua(const u16 *id)
606{
607 if ((id[ATA_ID_CFSSE] & 0xC000) != 0x4000)
608 return false;
609 return id[ATA_ID_CFSSE] & (1 << 6);
610}
611
612static inline bool ata_id_has_flush(const u16 *id)
613{
614 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
615 return false;
616 return id[ATA_ID_COMMAND_SET_2] & (1 << 12);
617}
618
619static inline bool ata_id_flush_enabled(const u16 *id)
620{
621 if (ata_id_has_flush(id) == 0)
622 return false;
623 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
624 return false;
625 return id[ATA_ID_CFS_ENABLE_2] & (1 << 12);
626}
627
628static inline bool ata_id_has_flush_ext(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 << 13);
633}
634
635static inline bool ata_id_flush_ext_enabled(const u16 *id)
636{
637 if (ata_id_has_flush_ext(id) == 0)
638 return false;
639 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
640 return false;
641 /*
642 * some Maxtor disks have bit 13 defined incorrectly
643 * so check bit 10 too
644 */
645 return (id[ATA_ID_CFS_ENABLE_2] & 0x2400) == 0x2400;
646}
647
648static inline u32 ata_id_logical_sector_size(const u16 *id)
649{
650 /* T13/1699-D Revision 6a, Sep 6, 2008. Page 128.
651 * IDENTIFY DEVICE data, word 117-118.
652 * 0xd000 ignores bit 13 (logical:physical > 1)
653 */
654 if ((id[ATA_ID_SECTOR_SIZE] & 0xd000) == 0x5000)
655 return (((id[ATA_ID_LOGICAL_SECTOR_SIZE+1] << 16)
656 + id[ATA_ID_LOGICAL_SECTOR_SIZE]) * sizeof(u16)) ;
657 return ATA_SECT_SIZE;
658}
659
660static inline u8 ata_id_log2_per_physical_sector(const u16 *id)
661{
662 /* T13/1699-D Revision 6a, Sep 6, 2008. Page 128.
663 * IDENTIFY DEVICE data, word 106.
664 * 0xe000 ignores bit 12 (logical sector > 512 bytes)
665 */
666 if ((id[ATA_ID_SECTOR_SIZE] & 0xe000) == 0x6000)
667 return (id[ATA_ID_SECTOR_SIZE] & 0xf);
668 return 0;
669}
670
671/* Offset of logical sectors relative to physical sectors.
672 *
673 * If device has more than one logical sector per physical sector
674 * (aka 512 byte emulation), vendors might offset the "sector 0" address
675 * so sector 63 is "naturally aligned" - e.g. FAT partition table.
676 * This avoids Read/Mod/Write penalties when using FAT partition table
677 * and updating "well aligned" (FS perspective) physical sectors on every
678 * transaction.
679 */
680static inline u16 ata_id_logical_sector_offset(const u16 *id,
681 u8 log2_per_phys)
682{
683 u16 word_209 = id[209];
684
685 if ((log2_per_phys > 1) && (word_209 & 0xc000) == 0x4000) {
686 u16 first = word_209 & 0x3fff;
687 if (first > 0)
688 return (1 << log2_per_phys) - first;
689 }
690 return 0;
691}
692
693static inline bool ata_id_has_lba48(const u16 *id)
694{
695 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
696 return false;
697 if (!ata_id_u64(id, ATA_ID_LBA_CAPACITY_2))
698 return false;
699 return id[ATA_ID_COMMAND_SET_2] & (1 << 10);
700}
701
702static inline bool ata_id_lba48_enabled(const u16 *id)
703{
704 if (ata_id_has_lba48(id) == 0)
705 return false;
706 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
707 return false;
708 return id[ATA_ID_CFS_ENABLE_2] & (1 << 10);
709}
710
711static inline bool ata_id_hpa_enabled(const u16 *id)
712{
713 /* Yes children, word 83 valid bits cover word 82 data */
714 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
715 return false;
716 /* And 87 covers 85-87 */
717 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
718 return false;
719 /* Check command sets enabled as well as supported */
720 if ((id[ATA_ID_CFS_ENABLE_1] & (1 << 10)) == 0)
721 return false;
722 return id[ATA_ID_COMMAND_SET_1] & (1 << 10);
723}
724
725static inline bool ata_id_has_wcache(const u16 *id)
726{
727 /* Yes children, word 83 valid bits cover word 82 data */
728 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
729 return false;
730 return id[ATA_ID_COMMAND_SET_1] & (1 << 5);
731}
732
733static inline bool ata_id_has_pm(const u16 *id)
734{
735 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
736 return false;
737 return id[ATA_ID_COMMAND_SET_1] & (1 << 3);
738}
739
740static inline bool ata_id_rahead_enabled(const u16 *id)
741{
742 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
743 return false;
744 return id[ATA_ID_CFS_ENABLE_1] & (1 << 6);
745}
746
747static inline bool ata_id_wcache_enabled(const u16 *id)
748{
749 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
750 return false;
751 return id[ATA_ID_CFS_ENABLE_1] & (1 << 5);
752}
753
754static inline bool ata_id_has_read_log_dma_ext(const u16 *id)
755{
756 /* Word 86 must have bit 15 set */
757 if (!(id[ATA_ID_CFS_ENABLE_2] & (1 << 15)))
758 return false;
759
760 /* READ LOG DMA EXT support can be signaled either from word 119
761 * or from word 120. The format is the same for both words: Bit
762 * 15 must be cleared, bit 14 set and bit 3 set.
763 */
764 if ((id[ATA_ID_COMMAND_SET_3] & 0xC008) == 0x4008 ||
765 (id[ATA_ID_COMMAND_SET_4] & 0xC008) == 0x4008)
766 return true;
767
768 return false;
769}
770
771static inline bool ata_id_has_sense_reporting(const u16 *id)
772{
773 if (!(id[ATA_ID_CFS_ENABLE_2] & (1 << 15)))
774 return false;
775 return id[ATA_ID_COMMAND_SET_3] & (1 << 6);
776}
777
778static inline bool ata_id_sense_reporting_enabled(const u16 *id)
779{
780 if (!(id[ATA_ID_CFS_ENABLE_2] & (1 << 15)))
781 return false;
782 return id[ATA_ID_COMMAND_SET_4] & (1 << 6);
783}
784
785/**
786 *
787 * Word: 206 - SCT Command Transport
788 * 15:12 - Vendor Specific
789 * 11:6 - Reserved
790 * 5 - SCT Command Transport Data Tables supported
791 * 4 - SCT Command Transport Features Control supported
792 * 3 - SCT Command Transport Error Recovery Control supported
793 * 2 - SCT Command Transport Write Same supported
794 * 1 - SCT Command Transport Long Sector Access supported
795 * 0 - SCT Command Transport supported
796 */
797static inline bool ata_id_sct_data_tables(const u16 *id)
798{
799 return id[ATA_ID_SCT_CMD_XPORT] & (1 << 5) ? true : false;
800}
801
802static inline bool ata_id_sct_features_ctrl(const u16 *id)
803{
804 return id[ATA_ID_SCT_CMD_XPORT] & (1 << 4) ? true : false;
805}
806
807static inline bool ata_id_sct_error_recovery_ctrl(const u16 *id)
808{
809 return id[ATA_ID_SCT_CMD_XPORT] & (1 << 3) ? true : false;
810}
811
812static inline bool ata_id_sct_long_sector_access(const u16 *id)
813{
814 return id[ATA_ID_SCT_CMD_XPORT] & (1 << 1) ? true : false;
815}
816
817static inline bool ata_id_sct_supported(const u16 *id)
818{
819 return id[ATA_ID_SCT_CMD_XPORT] & (1 << 0) ? true : false;
820}
821
822/**
823 * ata_id_major_version - get ATA level of drive
824 * @id: Identify data
825 *
826 * Caveats:
827 * ATA-1 considers identify optional
828 * ATA-2 introduces mandatory identify
829 * ATA-3 introduces word 80 and accurate reporting
830 *
831 * The practical impact of this is that ata_id_major_version cannot
832 * reliably report on drives below ATA3.
833 */
834
835static inline unsigned int ata_id_major_version(const u16 *id)
836{
837 unsigned int mver;
838
839 if (id[ATA_ID_MAJOR_VER] == 0xFFFF)
840 return 0;
841
842 for (mver = 14; mver >= 1; mver--)
843 if (id[ATA_ID_MAJOR_VER] & (1 << mver))
844 break;
845 return mver;
846}
847
848static inline bool ata_id_is_sata(const u16 *id)
849{
850 /*
851 * See if word 93 is 0 AND drive is at least ATA-5 compatible
852 * verifying that word 80 by casting it to a signed type --
853 * this trick allows us to filter out the reserved values of
854 * 0x0000 and 0xffff along with the earlier ATA revisions...
855 */
856 if (id[ATA_ID_HW_CONFIG] == 0 && (short)id[ATA_ID_MAJOR_VER] >= 0x0020)
857 return true;
858 return false;
859}
860
861static inline bool ata_id_has_tpm(const u16 *id)
862{
863 /* The TPM bits are only valid on ATA8 */
864 if (ata_id_major_version(id) < 8)
865 return false;
866 if ((id[48] & 0xC000) != 0x4000)
867 return false;
868 return id[48] & (1 << 0);
869}
870
871static inline bool ata_id_has_dword_io(const u16 *id)
872{
873 /* ATA 8 reuses this flag for "trusted" computing */
874 if (ata_id_major_version(id) > 7)
875 return false;
876 return id[ATA_ID_DWORD_IO] & (1 << 0);
877}
878
879static inline bool ata_id_has_trusted(const u16 *id)
880{
881 if (ata_id_major_version(id) <= 7)
882 return false;
883 return id[ATA_ID_TRUSTED] & (1 << 0);
884}
885
886static inline bool ata_id_has_unload(const u16 *id)
887{
888 if (ata_id_major_version(id) >= 7 &&
889 (id[ATA_ID_CFSSE] & 0xC000) == 0x4000 &&
890 id[ATA_ID_CFSSE] & (1 << 13))
891 return true;
892 return false;
893}
894
895static inline bool ata_id_has_wwn(const u16 *id)
896{
897 return (id[ATA_ID_CSF_DEFAULT] & 0xC100) == 0x4100;
898}
899
900static inline int ata_id_form_factor(const u16 *id)
901{
902 u16 val = id[168];
903
904 if (ata_id_major_version(id) < 7 || val == 0 || val == 0xffff)
905 return 0;
906
907 val &= 0xf;
908
909 if (val > 5)
910 return 0;
911
912 return val;
913}
914
915static inline int ata_id_rotation_rate(const u16 *id)
916{
917 u16 val = id[217];
918
919 if (ata_id_major_version(id) < 7 || val == 0 || val == 0xffff)
920 return 0;
921
922 if (val > 1 && val < 0x401)
923 return 0;
924
925 return val;
926}
927
928static inline bool ata_id_has_ncq_send_and_recv(const u16 *id)
929{
930 return id[ATA_ID_SATA_CAPABILITY_2] & BIT(6);
931}
932
933static inline bool ata_id_has_ncq_non_data(const u16 *id)
934{
935 return id[ATA_ID_SATA_CAPABILITY_2] & BIT(5);
936}
937
938static inline bool ata_id_has_ncq_prio(const u16 *id)
939{
940 return id[ATA_ID_SATA_CAPABILITY] & BIT(12);
941}
942
943static inline bool ata_id_has_trim(const u16 *id)
944{
945 if (ata_id_major_version(id) >= 7 &&
946 (id[ATA_ID_DATA_SET_MGMT] & 1))
947 return true;
948 return false;
949}
950
951static inline bool ata_id_has_zero_after_trim(const u16 *id)
952{
953 /* DSM supported, deterministic read, and read zero after trim set */
954 if (ata_id_has_trim(id) &&
955 (id[ATA_ID_ADDITIONAL_SUPP] & 0x4020) == 0x4020)
956 return true;
957
958 return false;
959}
960
961static inline bool ata_id_current_chs_valid(const u16 *id)
962{
963 /* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command
964 has not been issued to the device then the values of
965 id[ATA_ID_CUR_CYLS] to id[ATA_ID_CUR_SECTORS] are vendor specific. */
966 return (id[ATA_ID_FIELD_VALID] & 1) && /* Current translation valid */
967 id[ATA_ID_CUR_CYLS] && /* cylinders in current translation */
968 id[ATA_ID_CUR_HEADS] && /* heads in current translation */
969 id[ATA_ID_CUR_HEADS] <= 16 &&
970 id[ATA_ID_CUR_SECTORS]; /* sectors in current translation */
971}
972
973static inline bool ata_id_is_cfa(const u16 *id)
974{
975 if ((id[ATA_ID_CONFIG] == 0x848A) || /* Traditional CF */
976 (id[ATA_ID_CONFIG] == 0x844A)) /* Delkin Devices CF */
977 return true;
978 /*
979 * CF specs don't require specific value in the word 0 anymore and yet
980 * they forbid to report the ATA version in the word 80 and require the
981 * CFA feature set support to be indicated in the word 83 in this case.
982 * Unfortunately, some cards only follow either of this requirements,
983 * and while those that don't indicate CFA feature support need some
984 * sort of quirk list, it seems impractical for the ones that do...
985 */
986 return (id[ATA_ID_COMMAND_SET_2] & 0xC004) == 0x4004;
987}
988
989static inline bool ata_id_is_ssd(const u16 *id)
990{
991 return id[ATA_ID_ROT_SPEED] == 0x01;
992}
993
994static inline u8 ata_id_zoned_cap(const u16 *id)
995{
996 return (id[ATA_ID_ADDITIONAL_SUPP] & 0x3);
997}
998
999static inline bool ata_id_pio_need_iordy(const u16 *id, const u8 pio)
1000{
1001 /* CF spec. r4.1 Table 22 says no IORDY on PIO5 and PIO6. */
1002 if (pio > 4 && ata_id_is_cfa(id))
1003 return false;
1004 /* For PIO3 and higher it is mandatory. */
1005 if (pio > 2)
1006 return true;
1007 /* Turn it on when possible. */
1008 return ata_id_has_iordy(id);
1009}
1010
1011static inline bool ata_drive_40wire(const u16 *dev_id)
1012{
1013 if (ata_id_is_sata(dev_id))
1014 return false; /* SATA */
1015 if ((dev_id[ATA_ID_HW_CONFIG] & 0xE000) == 0x6000)
1016 return false; /* 80 wire */
1017 return true;
1018}
1019
1020static inline bool ata_drive_40wire_relaxed(const u16 *dev_id)
1021{
1022 if ((dev_id[ATA_ID_HW_CONFIG] & 0x2000) == 0x2000)
1023 return false; /* 80 wire */
1024 return true;
1025}
1026
1027static inline int atapi_cdb_len(const u16 *dev_id)
1028{
1029 u16 tmp = dev_id[ATA_ID_CONFIG] & 0x3;
1030 switch (tmp) {
1031 case 0: return 12;
1032 case 1: return 16;
1033 default: return -1;
1034 }
1035}
1036
1037static inline int atapi_command_packet_set(const u16 *dev_id)
1038{
1039 return (dev_id[ATA_ID_CONFIG] >> 8) & 0x1f;
1040}
1041
1042static inline bool atapi_id_dmadir(const u16 *dev_id)
1043{
1044 return ata_id_major_version(dev_id) >= 7 && (dev_id[62] & 0x8000);
1045}
1046
1047/*
1048 * ata_id_is_lba_capacity_ok() performs a sanity check on
1049 * the claimed LBA capacity value for the device.
1050 *
1051 * Returns 1 if LBA capacity looks sensible, 0 otherwise.
1052 *
1053 * It is called only once for each device.
1054 */
1055static inline bool ata_id_is_lba_capacity_ok(u16 *id)
1056{
1057 unsigned long lba_sects, chs_sects, head, tail;
1058
1059 /* No non-LBA info .. so valid! */
1060 if (id[ATA_ID_CYLS] == 0)
1061 return true;
1062
1063 lba_sects = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
1064
1065 /*
1066 * The ATA spec tells large drives to return
1067 * C/H/S = 16383/16/63 independent of their size.
1068 * Some drives can be jumpered to use 15 heads instead of 16.
1069 * Some drives can be jumpered to use 4092 cyls instead of 16383.
1070 */
1071 if ((id[ATA_ID_CYLS] == 16383 ||
1072 (id[ATA_ID_CYLS] == 4092 && id[ATA_ID_CUR_CYLS] == 16383)) &&
1073 id[ATA_ID_SECTORS] == 63 &&
1074 (id[ATA_ID_HEADS] == 15 || id[ATA_ID_HEADS] == 16) &&
1075 (lba_sects >= 16383 * 63 * id[ATA_ID_HEADS]))
1076 return true;
1077
1078 chs_sects = id[ATA_ID_CYLS] * id[ATA_ID_HEADS] * id[ATA_ID_SECTORS];
1079
1080 /* perform a rough sanity check on lba_sects: within 10% is OK */
1081 if (lba_sects - chs_sects < chs_sects/10)
1082 return true;
1083
1084 /* some drives have the word order reversed */
1085 head = (lba_sects >> 16) & 0xffff;
1086 tail = lba_sects & 0xffff;
1087 lba_sects = head | (tail << 16);
1088
1089 if (lba_sects - chs_sects < chs_sects/10) {
1090 *(__le32 *)&id[ATA_ID_LBA_CAPACITY] = __cpu_to_le32(lba_sects);
1091 return true; /* LBA capacity is (now) good */
1092 }
1093
1094 return false; /* LBA capacity value may be bad */
1095}
1096
1097static inline void ata_id_to_hd_driveid(u16 *id)
1098{
1099#ifdef __BIG_ENDIAN
1100 /* accessed in struct hd_driveid as 8-bit values */
1101 id[ATA_ID_MAX_MULTSECT] = __cpu_to_le16(id[ATA_ID_MAX_MULTSECT]);
1102 id[ATA_ID_CAPABILITY] = __cpu_to_le16(id[ATA_ID_CAPABILITY]);
1103 id[ATA_ID_OLD_PIO_MODES] = __cpu_to_le16(id[ATA_ID_OLD_PIO_MODES]);
1104 id[ATA_ID_OLD_DMA_MODES] = __cpu_to_le16(id[ATA_ID_OLD_DMA_MODES]);
1105 id[ATA_ID_MULTSECT] = __cpu_to_le16(id[ATA_ID_MULTSECT]);
1106
1107 /* as 32-bit values */
1108 *(u32 *)&id[ATA_ID_LBA_CAPACITY] = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
1109 *(u32 *)&id[ATA_ID_SPG] = ata_id_u32(id, ATA_ID_SPG);
1110
1111 /* as 64-bit value */
1112 *(u64 *)&id[ATA_ID_LBA_CAPACITY_2] =
1113 ata_id_u64(id, ATA_ID_LBA_CAPACITY_2);
1114#endif
1115}
1116
1117static inline bool ata_ok(u8 status)
1118{
1119 return ((status & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ | ATA_ERR))
1120 == ATA_DRDY);
1121}
1122
1123static inline bool lba_28_ok(u64 block, u32 n_block)
1124{
1125 /* check the ending block number: must be LESS THAN 0x0fffffff */
1126 return ((block + n_block) < ((1 << 28) - 1)) && (n_block <= ATA_MAX_SECTORS);
1127}
1128
1129static inline bool lba_48_ok(u64 block, u32 n_block)
1130{
1131 /* check the ending block number */
1132 return ((block + n_block - 1) < ((u64)1 << 48)) && (n_block <= ATA_MAX_SECTORS_LBA48);
1133}
1134
1135#define sata_pmp_gscr_vendor(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] & 0xffff)
1136#define sata_pmp_gscr_devid(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] >> 16)
1137#define sata_pmp_gscr_rev(gscr) (((gscr)[SATA_PMP_GSCR_REV] >> 8) & 0xff)
1138#define sata_pmp_gscr_ports(gscr) ((gscr)[SATA_PMP_GSCR_PORT_INFO] & 0xf)
1139
1140#endif /* __LINUX_ATA_H__ */
1
2/*
3 * Copyright 2003-2004 Red Hat, Inc. All rights reserved.
4 * Copyright 2003-2004 Jeff Garzik
5 *
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2, or (at your option)
10 * any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; see the file COPYING. If not, write to
19 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
20 *
21 *
22 * libata documentation is available via 'make {ps|pdf}docs',
23 * as Documentation/DocBook/libata.*
24 *
25 * Hardware documentation available from http://www.t13.org/
26 *
27 */
28
29#ifndef __LINUX_ATA_H__
30#define __LINUX_ATA_H__
31
32#include <linux/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
41enum {
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_SATA_CAPABILITY = 76,
81 ATA_ID_SATA_CAPABILITY_2 = 77,
82 ATA_ID_FEATURE_SUPP = 78,
83 ATA_ID_MAJOR_VER = 80,
84 ATA_ID_COMMAND_SET_1 = 82,
85 ATA_ID_COMMAND_SET_2 = 83,
86 ATA_ID_CFSSE = 84,
87 ATA_ID_CFS_ENABLE_1 = 85,
88 ATA_ID_CFS_ENABLE_2 = 86,
89 ATA_ID_CSF_DEFAULT = 87,
90 ATA_ID_UDMA_MODES = 88,
91 ATA_ID_HW_CONFIG = 93,
92 ATA_ID_SPG = 98,
93 ATA_ID_LBA_CAPACITY_2 = 100,
94 ATA_ID_SECTOR_SIZE = 106,
95 ATA_ID_WWN = 108,
96 ATA_ID_LOGICAL_SECTOR_SIZE = 117, /* and 118 */
97 ATA_ID_LAST_LUN = 126,
98 ATA_ID_DLF = 128,
99 ATA_ID_CSFO = 129,
100 ATA_ID_CFA_POWER = 160,
101 ATA_ID_CFA_KEY_MGMT = 162,
102 ATA_ID_CFA_MODES = 163,
103 ATA_ID_DATA_SET_MGMT = 169,
104 ATA_ID_ROT_SPEED = 217,
105 ATA_ID_PIO4 = (1 << 1),
106
107 ATA_ID_SERNO_LEN = 20,
108 ATA_ID_FW_REV_LEN = 8,
109 ATA_ID_PROD_LEN = 40,
110 ATA_ID_WWN_LEN = 8,
111
112 ATA_PCI_CTL_OFS = 2,
113
114 ATA_PIO0 = (1 << 0),
115 ATA_PIO1 = ATA_PIO0 | (1 << 1),
116 ATA_PIO2 = ATA_PIO1 | (1 << 2),
117 ATA_PIO3 = ATA_PIO2 | (1 << 3),
118 ATA_PIO4 = ATA_PIO3 | (1 << 4),
119 ATA_PIO5 = ATA_PIO4 | (1 << 5),
120 ATA_PIO6 = ATA_PIO5 | (1 << 6),
121
122 ATA_PIO4_ONLY = (1 << 4),
123
124 ATA_SWDMA0 = (1 << 0),
125 ATA_SWDMA1 = ATA_SWDMA0 | (1 << 1),
126 ATA_SWDMA2 = ATA_SWDMA1 | (1 << 2),
127
128 ATA_SWDMA2_ONLY = (1 << 2),
129
130 ATA_MWDMA0 = (1 << 0),
131 ATA_MWDMA1 = ATA_MWDMA0 | (1 << 1),
132 ATA_MWDMA2 = ATA_MWDMA1 | (1 << 2),
133 ATA_MWDMA3 = ATA_MWDMA2 | (1 << 3),
134 ATA_MWDMA4 = ATA_MWDMA3 | (1 << 4),
135
136 ATA_MWDMA12_ONLY = (1 << 1) | (1 << 2),
137 ATA_MWDMA2_ONLY = (1 << 2),
138
139 ATA_UDMA0 = (1 << 0),
140 ATA_UDMA1 = ATA_UDMA0 | (1 << 1),
141 ATA_UDMA2 = ATA_UDMA1 | (1 << 2),
142 ATA_UDMA3 = ATA_UDMA2 | (1 << 3),
143 ATA_UDMA4 = ATA_UDMA3 | (1 << 4),
144 ATA_UDMA5 = ATA_UDMA4 | (1 << 5),
145 ATA_UDMA6 = ATA_UDMA5 | (1 << 6),
146 ATA_UDMA7 = ATA_UDMA6 | (1 << 7),
147 /* ATA_UDMA7 is just for completeness... doesn't exist (yet?). */
148
149 ATA_UDMA24_ONLY = (1 << 2) | (1 << 4),
150
151 ATA_UDMA_MASK_40C = ATA_UDMA2, /* udma0-2 */
152
153 /* DMA-related */
154 ATA_PRD_SZ = 8,
155 ATA_PRD_TBL_SZ = (ATA_MAX_PRD * ATA_PRD_SZ),
156 ATA_PRD_EOT = (1 << 31), /* end-of-table flag */
157
158 ATA_DMA_TABLE_OFS = 4,
159 ATA_DMA_STATUS = 2,
160 ATA_DMA_CMD = 0,
161 ATA_DMA_WR = (1 << 3),
162 ATA_DMA_START = (1 << 0),
163 ATA_DMA_INTR = (1 << 2),
164 ATA_DMA_ERR = (1 << 1),
165 ATA_DMA_ACTIVE = (1 << 0),
166
167 /* bits in ATA command block registers */
168 ATA_HOB = (1 << 7), /* LBA48 selector */
169 ATA_NIEN = (1 << 1), /* disable-irq flag */
170 ATA_LBA = (1 << 6), /* LBA28 selector */
171 ATA_DEV1 = (1 << 4), /* Select Device 1 (slave) */
172 ATA_DEVICE_OBS = (1 << 7) | (1 << 5), /* obs bits in dev reg */
173 ATA_DEVCTL_OBS = (1 << 3), /* obsolete bit in devctl reg */
174 ATA_BUSY = (1 << 7), /* BSY status bit */
175 ATA_DRDY = (1 << 6), /* device ready */
176 ATA_DF = (1 << 5), /* device fault */
177 ATA_DSC = (1 << 4), /* drive seek complete */
178 ATA_DRQ = (1 << 3), /* data request i/o */
179 ATA_CORR = (1 << 2), /* corrected data error */
180 ATA_IDX = (1 << 1), /* index */
181 ATA_ERR = (1 << 0), /* have an error */
182 ATA_SRST = (1 << 2), /* software reset */
183 ATA_ICRC = (1 << 7), /* interface CRC error */
184 ATA_BBK = ATA_ICRC, /* pre-EIDE: block marked bad */
185 ATA_UNC = (1 << 6), /* uncorrectable media error */
186 ATA_MC = (1 << 5), /* media changed */
187 ATA_IDNF = (1 << 4), /* ID not found */
188 ATA_MCR = (1 << 3), /* media change requested */
189 ATA_ABORTED = (1 << 2), /* command aborted */
190 ATA_TRK0NF = (1 << 1), /* track 0 not found */
191 ATA_AMNF = (1 << 0), /* address mark not found */
192 ATAPI_LFS = 0xF0, /* last failed sense */
193 ATAPI_EOM = ATA_TRK0NF, /* end of media */
194 ATAPI_ILI = ATA_AMNF, /* illegal length indication */
195 ATAPI_IO = (1 << 1),
196 ATAPI_COD = (1 << 0),
197
198 /* ATA command block registers */
199 ATA_REG_DATA = 0x00,
200 ATA_REG_ERR = 0x01,
201 ATA_REG_NSECT = 0x02,
202 ATA_REG_LBAL = 0x03,
203 ATA_REG_LBAM = 0x04,
204 ATA_REG_LBAH = 0x05,
205 ATA_REG_DEVICE = 0x06,
206 ATA_REG_STATUS = 0x07,
207
208 ATA_REG_FEATURE = ATA_REG_ERR, /* and their aliases */
209 ATA_REG_CMD = ATA_REG_STATUS,
210 ATA_REG_BYTEL = ATA_REG_LBAM,
211 ATA_REG_BYTEH = ATA_REG_LBAH,
212 ATA_REG_DEVSEL = ATA_REG_DEVICE,
213 ATA_REG_IRQ = ATA_REG_NSECT,
214
215 /* ATA device commands */
216 ATA_CMD_DEV_RESET = 0x08, /* ATAPI device reset */
217 ATA_CMD_CHK_POWER = 0xE5, /* check power mode */
218 ATA_CMD_STANDBY = 0xE2, /* place in standby power mode */
219 ATA_CMD_IDLE = 0xE3, /* place in idle power mode */
220 ATA_CMD_EDD = 0x90, /* execute device diagnostic */
221 ATA_CMD_DOWNLOAD_MICRO = 0x92,
222 ATA_CMD_DOWNLOAD_MICRO_DMA = 0x93,
223 ATA_CMD_NOP = 0x00,
224 ATA_CMD_FLUSH = 0xE7,
225 ATA_CMD_FLUSH_EXT = 0xEA,
226 ATA_CMD_ID_ATA = 0xEC,
227 ATA_CMD_ID_ATAPI = 0xA1,
228 ATA_CMD_SERVICE = 0xA2,
229 ATA_CMD_READ = 0xC8,
230 ATA_CMD_READ_EXT = 0x25,
231 ATA_CMD_READ_QUEUED = 0x26,
232 ATA_CMD_READ_STREAM_EXT = 0x2B,
233 ATA_CMD_READ_STREAM_DMA_EXT = 0x2A,
234 ATA_CMD_WRITE = 0xCA,
235 ATA_CMD_WRITE_EXT = 0x35,
236 ATA_CMD_WRITE_QUEUED = 0x36,
237 ATA_CMD_WRITE_STREAM_EXT = 0x3B,
238 ATA_CMD_WRITE_STREAM_DMA_EXT = 0x3A,
239 ATA_CMD_WRITE_FUA_EXT = 0x3D,
240 ATA_CMD_WRITE_QUEUED_FUA_EXT = 0x3E,
241 ATA_CMD_FPDMA_READ = 0x60,
242 ATA_CMD_FPDMA_WRITE = 0x61,
243 ATA_CMD_FPDMA_SEND = 0x64,
244 ATA_CMD_FPDMA_RECV = 0x65,
245 ATA_CMD_PIO_READ = 0x20,
246 ATA_CMD_PIO_READ_EXT = 0x24,
247 ATA_CMD_PIO_WRITE = 0x30,
248 ATA_CMD_PIO_WRITE_EXT = 0x34,
249 ATA_CMD_READ_MULTI = 0xC4,
250 ATA_CMD_READ_MULTI_EXT = 0x29,
251 ATA_CMD_WRITE_MULTI = 0xC5,
252 ATA_CMD_WRITE_MULTI_EXT = 0x39,
253 ATA_CMD_WRITE_MULTI_FUA_EXT = 0xCE,
254 ATA_CMD_SET_FEATURES = 0xEF,
255 ATA_CMD_SET_MULTI = 0xC6,
256 ATA_CMD_PACKET = 0xA0,
257 ATA_CMD_VERIFY = 0x40,
258 ATA_CMD_VERIFY_EXT = 0x42,
259 ATA_CMD_WRITE_UNCORR_EXT = 0x45,
260 ATA_CMD_STANDBYNOW1 = 0xE0,
261 ATA_CMD_IDLEIMMEDIATE = 0xE1,
262 ATA_CMD_SLEEP = 0xE6,
263 ATA_CMD_INIT_DEV_PARAMS = 0x91,
264 ATA_CMD_READ_NATIVE_MAX = 0xF8,
265 ATA_CMD_READ_NATIVE_MAX_EXT = 0x27,
266 ATA_CMD_SET_MAX = 0xF9,
267 ATA_CMD_SET_MAX_EXT = 0x37,
268 ATA_CMD_READ_LOG_EXT = 0x2F,
269 ATA_CMD_WRITE_LOG_EXT = 0x3F,
270 ATA_CMD_READ_LOG_DMA_EXT = 0x47,
271 ATA_CMD_WRITE_LOG_DMA_EXT = 0x57,
272 ATA_CMD_TRUSTED_NONDATA = 0x5B,
273 ATA_CMD_TRUSTED_RCV = 0x5C,
274 ATA_CMD_TRUSTED_RCV_DMA = 0x5D,
275 ATA_CMD_TRUSTED_SND = 0x5E,
276 ATA_CMD_TRUSTED_SND_DMA = 0x5F,
277 ATA_CMD_PMP_READ = 0xE4,
278 ATA_CMD_PMP_READ_DMA = 0xE9,
279 ATA_CMD_PMP_WRITE = 0xE8,
280 ATA_CMD_PMP_WRITE_DMA = 0xEB,
281 ATA_CMD_CONF_OVERLAY = 0xB1,
282 ATA_CMD_SEC_SET_PASS = 0xF1,
283 ATA_CMD_SEC_UNLOCK = 0xF2,
284 ATA_CMD_SEC_ERASE_PREP = 0xF3,
285 ATA_CMD_SEC_ERASE_UNIT = 0xF4,
286 ATA_CMD_SEC_FREEZE_LOCK = 0xF5,
287 ATA_CMD_SEC_DISABLE_PASS = 0xF6,
288 ATA_CMD_CONFIG_STREAM = 0x51,
289 ATA_CMD_SMART = 0xB0,
290 ATA_CMD_MEDIA_LOCK = 0xDE,
291 ATA_CMD_MEDIA_UNLOCK = 0xDF,
292 ATA_CMD_DSM = 0x06,
293 ATA_CMD_CHK_MED_CRD_TYP = 0xD1,
294 ATA_CMD_CFA_REQ_EXT_ERR = 0x03,
295 ATA_CMD_CFA_WRITE_NE = 0x38,
296 ATA_CMD_CFA_TRANS_SECT = 0x87,
297 ATA_CMD_CFA_ERASE = 0xC0,
298 ATA_CMD_CFA_WRITE_MULT_NE = 0xCD,
299 ATA_CMD_REQ_SENSE_DATA = 0x0B,
300 ATA_CMD_SANITIZE_DEVICE = 0xB4,
301
302 /* marked obsolete in the ATA/ATAPI-7 spec */
303 ATA_CMD_RESTORE = 0x10,
304
305 /* Subcmds for ATA_CMD_FPDMA_SEND */
306 ATA_SUBCMD_FPDMA_SEND_DSM = 0x00,
307 ATA_SUBCMD_FPDMA_SEND_WR_LOG_DMA_EXT = 0x02,
308
309 /* READ_LOG_EXT pages */
310 ATA_LOG_SATA_NCQ = 0x10,
311 ATA_LOG_NCQ_SEND_RECV = 0x13,
312 ATA_LOG_SATA_ID_DEV_DATA = 0x30,
313 ATA_LOG_SATA_SETTINGS = 0x08,
314 ATA_LOG_DEVSLP_OFFSET = 0x30,
315 ATA_LOG_DEVSLP_SIZE = 0x08,
316 ATA_LOG_DEVSLP_MDAT = 0x00,
317 ATA_LOG_DEVSLP_MDAT_MASK = 0x1F,
318 ATA_LOG_DEVSLP_DETO = 0x01,
319 ATA_LOG_DEVSLP_VALID = 0x07,
320 ATA_LOG_DEVSLP_VALID_MASK = 0x80,
321
322 /* NCQ send and receive log */
323 ATA_LOG_NCQ_SEND_RECV_SUBCMDS_OFFSET = 0x00,
324 ATA_LOG_NCQ_SEND_RECV_SUBCMDS_DSM = (1 << 0),
325 ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET = 0x04,
326 ATA_LOG_NCQ_SEND_RECV_DSM_TRIM = (1 << 0),
327 ATA_LOG_NCQ_SEND_RECV_RD_LOG_OFFSET = 0x08,
328 ATA_LOG_NCQ_SEND_RECV_WR_LOG_OFFSET = 0x0C,
329 ATA_LOG_NCQ_SEND_RECV_SIZE = 0x10,
330
331 /* READ/WRITE LONG (obsolete) */
332 ATA_CMD_READ_LONG = 0x22,
333 ATA_CMD_READ_LONG_ONCE = 0x23,
334 ATA_CMD_WRITE_LONG = 0x32,
335 ATA_CMD_WRITE_LONG_ONCE = 0x33,
336
337 /* SETFEATURES stuff */
338 SETFEATURES_XFER = 0x03,
339 XFER_UDMA_7 = 0x47,
340 XFER_UDMA_6 = 0x46,
341 XFER_UDMA_5 = 0x45,
342 XFER_UDMA_4 = 0x44,
343 XFER_UDMA_3 = 0x43,
344 XFER_UDMA_2 = 0x42,
345 XFER_UDMA_1 = 0x41,
346 XFER_UDMA_0 = 0x40,
347 XFER_MW_DMA_4 = 0x24, /* CFA only */
348 XFER_MW_DMA_3 = 0x23, /* CFA only */
349 XFER_MW_DMA_2 = 0x22,
350 XFER_MW_DMA_1 = 0x21,
351 XFER_MW_DMA_0 = 0x20,
352 XFER_SW_DMA_2 = 0x12,
353 XFER_SW_DMA_1 = 0x11,
354 XFER_SW_DMA_0 = 0x10,
355 XFER_PIO_6 = 0x0E, /* CFA only */
356 XFER_PIO_5 = 0x0D, /* CFA only */
357 XFER_PIO_4 = 0x0C,
358 XFER_PIO_3 = 0x0B,
359 XFER_PIO_2 = 0x0A,
360 XFER_PIO_1 = 0x09,
361 XFER_PIO_0 = 0x08,
362 XFER_PIO_SLOW = 0x00,
363
364 SETFEATURES_WC_ON = 0x02, /* Enable write cache */
365 SETFEATURES_WC_OFF = 0x82, /* Disable write cache */
366
367 /* Enable/Disable Automatic Acoustic Management */
368 SETFEATURES_AAM_ON = 0x42,
369 SETFEATURES_AAM_OFF = 0xC2,
370
371 SETFEATURES_SPINUP = 0x07, /* Spin-up drive */
372
373 SETFEATURES_SATA_ENABLE = 0x10, /* Enable use of SATA feature */
374 SETFEATURES_SATA_DISABLE = 0x90, /* Disable use of SATA feature */
375
376 /* SETFEATURE Sector counts for SATA features */
377 SATA_FPDMA_OFFSET = 0x01, /* FPDMA non-zero buffer offsets */
378 SATA_FPDMA_AA = 0x02, /* FPDMA Setup FIS Auto-Activate */
379 SATA_DIPM = 0x03, /* Device Initiated Power Management */
380 SATA_FPDMA_IN_ORDER = 0x04, /* FPDMA in-order data delivery */
381 SATA_AN = 0x05, /* Asynchronous Notification */
382 SATA_SSP = 0x06, /* Software Settings Preservation */
383 SATA_DEVSLP = 0x09, /* Device Sleep */
384
385 /* feature values for SET_MAX */
386 ATA_SET_MAX_ADDR = 0x00,
387 ATA_SET_MAX_PASSWD = 0x01,
388 ATA_SET_MAX_LOCK = 0x02,
389 ATA_SET_MAX_UNLOCK = 0x03,
390 ATA_SET_MAX_FREEZE_LOCK = 0x04,
391
392 /* feature values for DEVICE CONFIGURATION OVERLAY */
393 ATA_DCO_RESTORE = 0xC0,
394 ATA_DCO_FREEZE_LOCK = 0xC1,
395 ATA_DCO_IDENTIFY = 0xC2,
396 ATA_DCO_SET = 0xC3,
397
398 /* feature values for SMART */
399 ATA_SMART_ENABLE = 0xD8,
400 ATA_SMART_READ_VALUES = 0xD0,
401 ATA_SMART_READ_THRESHOLDS = 0xD1,
402
403 /* feature values for Data Set Management */
404 ATA_DSM_TRIM = 0x01,
405
406 /* password used in LBA Mid / LBA High for executing SMART commands */
407 ATA_SMART_LBAM_PASS = 0x4F,
408 ATA_SMART_LBAH_PASS = 0xC2,
409
410 /* ATAPI stuff */
411 ATAPI_PKT_DMA = (1 << 0),
412 ATAPI_DMADIR = (1 << 2), /* ATAPI data dir:
413 0=to device, 1=to host */
414 ATAPI_CDB_LEN = 16,
415
416 /* PMP stuff */
417 SATA_PMP_MAX_PORTS = 15,
418 SATA_PMP_CTRL_PORT = 15,
419
420 SATA_PMP_GSCR_DWORDS = 128,
421 SATA_PMP_GSCR_PROD_ID = 0,
422 SATA_PMP_GSCR_REV = 1,
423 SATA_PMP_GSCR_PORT_INFO = 2,
424 SATA_PMP_GSCR_ERROR = 32,
425 SATA_PMP_GSCR_ERROR_EN = 33,
426 SATA_PMP_GSCR_FEAT = 64,
427 SATA_PMP_GSCR_FEAT_EN = 96,
428
429 SATA_PMP_PSCR_STATUS = 0,
430 SATA_PMP_PSCR_ERROR = 1,
431 SATA_PMP_PSCR_CONTROL = 2,
432
433 SATA_PMP_FEAT_BIST = (1 << 0),
434 SATA_PMP_FEAT_PMREQ = (1 << 1),
435 SATA_PMP_FEAT_DYNSSC = (1 << 2),
436 SATA_PMP_FEAT_NOTIFY = (1 << 3),
437
438 /* cable types */
439 ATA_CBL_NONE = 0,
440 ATA_CBL_PATA40 = 1,
441 ATA_CBL_PATA80 = 2,
442 ATA_CBL_PATA40_SHORT = 3, /* 40 wire cable to high UDMA spec */
443 ATA_CBL_PATA_UNK = 4, /* don't know, maybe 80c? */
444 ATA_CBL_PATA_IGN = 5, /* don't know, ignore cable handling */
445 ATA_CBL_SATA = 6,
446
447 /* SATA Status and Control Registers */
448 SCR_STATUS = 0,
449 SCR_ERROR = 1,
450 SCR_CONTROL = 2,
451 SCR_ACTIVE = 3,
452 SCR_NOTIFICATION = 4,
453
454 /* SError bits */
455 SERR_DATA_RECOVERED = (1 << 0), /* recovered data error */
456 SERR_COMM_RECOVERED = (1 << 1), /* recovered comm failure */
457 SERR_DATA = (1 << 8), /* unrecovered data error */
458 SERR_PERSISTENT = (1 << 9), /* persistent data/comm error */
459 SERR_PROTOCOL = (1 << 10), /* protocol violation */
460 SERR_INTERNAL = (1 << 11), /* host internal error */
461 SERR_PHYRDY_CHG = (1 << 16), /* PHY RDY changed */
462 SERR_PHY_INT_ERR = (1 << 17), /* PHY internal error */
463 SERR_COMM_WAKE = (1 << 18), /* Comm wake */
464 SERR_10B_8B_ERR = (1 << 19), /* 10b to 8b decode error */
465 SERR_DISPARITY = (1 << 20), /* Disparity */
466 SERR_CRC = (1 << 21), /* CRC error */
467 SERR_HANDSHAKE = (1 << 22), /* Handshake error */
468 SERR_LINK_SEQ_ERR = (1 << 23), /* Link sequence error */
469 SERR_TRANS_ST_ERROR = (1 << 24), /* Transport state trans. error */
470 SERR_UNRECOG_FIS = (1 << 25), /* Unrecognized FIS */
471 SERR_DEV_XCHG = (1 << 26), /* device exchanged */
472};
473
474enum ata_tf_protocols {
475 /* ATA taskfile protocols */
476 ATA_PROT_UNKNOWN, /* unknown/invalid */
477 ATA_PROT_NODATA, /* no data */
478 ATA_PROT_PIO, /* PIO data xfer */
479 ATA_PROT_DMA, /* DMA */
480 ATA_PROT_NCQ, /* NCQ */
481 ATAPI_PROT_NODATA, /* packet command, no data */
482 ATAPI_PROT_PIO, /* packet command, PIO data xfer*/
483 ATAPI_PROT_DMA, /* packet command with special DMA sauce */
484};
485
486enum ata_ioctls {
487 ATA_IOC_GET_IO32 = 0x309,
488 ATA_IOC_SET_IO32 = 0x324,
489};
490
491/* core structures */
492
493struct ata_bmdma_prd {
494 __le32 addr;
495 __le32 flags_len;
496};
497
498/*
499 * id tests
500 */
501#define ata_id_is_ata(id) (((id)[ATA_ID_CONFIG] & (1 << 15)) == 0)
502#define ata_id_has_lba(id) ((id)[ATA_ID_CAPABILITY] & (1 << 9))
503#define ata_id_has_dma(id) ((id)[ATA_ID_CAPABILITY] & (1 << 8))
504#define ata_id_has_ncq(id) ((id)[ATA_ID_SATA_CAPABILITY] & (1 << 8))
505#define ata_id_queue_depth(id) (((id)[ATA_ID_QUEUE_DEPTH] & 0x1f) + 1)
506#define ata_id_removeable(id) ((id)[ATA_ID_CONFIG] & (1 << 7))
507#define ata_id_has_atapi_AN(id) \
508 ((((id)[ATA_ID_SATA_CAPABILITY] != 0x0000) && \
509 ((id)[ATA_ID_SATA_CAPABILITY] != 0xffff)) && \
510 ((id)[ATA_ID_FEATURE_SUPP] & (1 << 5)))
511#define ata_id_has_fpdma_aa(id) \
512 ((((id)[ATA_ID_SATA_CAPABILITY] != 0x0000) && \
513 ((id)[ATA_ID_SATA_CAPABILITY] != 0xffff)) && \
514 ((id)[ATA_ID_FEATURE_SUPP] & (1 << 2)))
515#define ata_id_iordy_disable(id) ((id)[ATA_ID_CAPABILITY] & (1 << 10))
516#define ata_id_has_iordy(id) ((id)[ATA_ID_CAPABILITY] & (1 << 11))
517#define ata_id_u32(id,n) \
518 (((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)]))
519#define ata_id_u64(id,n) \
520 ( ((u64) (id)[(n) + 3] << 48) | \
521 ((u64) (id)[(n) + 2] << 32) | \
522 ((u64) (id)[(n) + 1] << 16) | \
523 ((u64) (id)[(n) + 0]) )
524
525#define ata_id_cdb_intr(id) (((id)[ATA_ID_CONFIG] & 0x60) == 0x20)
526#define ata_id_has_da(id) ((id)[ATA_ID_SATA_CAPABILITY_2] & (1 << 4))
527#define ata_id_has_devslp(id) ((id)[ATA_ID_FEATURE_SUPP] & (1 << 8))
528
529static inline bool ata_id_has_hipm(const u16 *id)
530{
531 u16 val = id[ATA_ID_SATA_CAPABILITY];
532
533 if (val == 0 || val == 0xffff)
534 return false;
535
536 return val & (1 << 9);
537}
538
539static inline bool ata_id_has_dipm(const u16 *id)
540{
541 u16 val = id[ATA_ID_FEATURE_SUPP];
542
543 if (val == 0 || val == 0xffff)
544 return false;
545
546 return val & (1 << 3);
547}
548
549
550static inline bool ata_id_has_fua(const u16 *id)
551{
552 if ((id[ATA_ID_CFSSE] & 0xC000) != 0x4000)
553 return false;
554 return id[ATA_ID_CFSSE] & (1 << 6);
555}
556
557static inline bool ata_id_has_flush(const u16 *id)
558{
559 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
560 return false;
561 return id[ATA_ID_COMMAND_SET_2] & (1 << 12);
562}
563
564static inline bool ata_id_flush_enabled(const u16 *id)
565{
566 if (ata_id_has_flush(id) == 0)
567 return false;
568 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
569 return false;
570 return id[ATA_ID_CFS_ENABLE_2] & (1 << 12);
571}
572
573static inline bool ata_id_has_flush_ext(const u16 *id)
574{
575 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
576 return false;
577 return id[ATA_ID_COMMAND_SET_2] & (1 << 13);
578}
579
580static inline bool ata_id_flush_ext_enabled(const u16 *id)
581{
582 if (ata_id_has_flush_ext(id) == 0)
583 return false;
584 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
585 return false;
586 /*
587 * some Maxtor disks have bit 13 defined incorrectly
588 * so check bit 10 too
589 */
590 return (id[ATA_ID_CFS_ENABLE_2] & 0x2400) == 0x2400;
591}
592
593static inline u32 ata_id_logical_sector_size(const u16 *id)
594{
595 /* T13/1699-D Revision 6a, Sep 6, 2008. Page 128.
596 * IDENTIFY DEVICE data, word 117-118.
597 * 0xd000 ignores bit 13 (logical:physical > 1)
598 */
599 if ((id[ATA_ID_SECTOR_SIZE] & 0xd000) == 0x5000)
600 return (((id[ATA_ID_LOGICAL_SECTOR_SIZE+1] << 16)
601 + id[ATA_ID_LOGICAL_SECTOR_SIZE]) * sizeof(u16)) ;
602 return ATA_SECT_SIZE;
603}
604
605static inline u8 ata_id_log2_per_physical_sector(const u16 *id)
606{
607 /* T13/1699-D Revision 6a, Sep 6, 2008. Page 128.
608 * IDENTIFY DEVICE data, word 106.
609 * 0xe000 ignores bit 12 (logical sector > 512 bytes)
610 */
611 if ((id[ATA_ID_SECTOR_SIZE] & 0xe000) == 0x6000)
612 return (id[ATA_ID_SECTOR_SIZE] & 0xf);
613 return 0;
614}
615
616/* Offset of logical sectors relative to physical sectors.
617 *
618 * If device has more than one logical sector per physical sector
619 * (aka 512 byte emulation), vendors might offset the "sector 0" address
620 * so sector 63 is "naturally aligned" - e.g. FAT partition table.
621 * This avoids Read/Mod/Write penalties when using FAT partition table
622 * and updating "well aligned" (FS perspective) physical sectors on every
623 * transaction.
624 */
625static inline u16 ata_id_logical_sector_offset(const u16 *id,
626 u8 log2_per_phys)
627{
628 u16 word_209 = id[209];
629
630 if ((log2_per_phys > 1) && (word_209 & 0xc000) == 0x4000) {
631 u16 first = word_209 & 0x3fff;
632 if (first > 0)
633 return (1 << log2_per_phys) - first;
634 }
635 return 0;
636}
637
638static inline bool ata_id_has_lba48(const u16 *id)
639{
640 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
641 return false;
642 if (!ata_id_u64(id, ATA_ID_LBA_CAPACITY_2))
643 return false;
644 return id[ATA_ID_COMMAND_SET_2] & (1 << 10);
645}
646
647static inline bool ata_id_lba48_enabled(const u16 *id)
648{
649 if (ata_id_has_lba48(id) == 0)
650 return false;
651 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
652 return false;
653 return id[ATA_ID_CFS_ENABLE_2] & (1 << 10);
654}
655
656static inline bool ata_id_hpa_enabled(const u16 *id)
657{
658 /* Yes children, word 83 valid bits cover word 82 data */
659 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
660 return false;
661 /* And 87 covers 85-87 */
662 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
663 return false;
664 /* Check command sets enabled as well as supported */
665 if ((id[ATA_ID_CFS_ENABLE_1] & (1 << 10)) == 0)
666 return false;
667 return id[ATA_ID_COMMAND_SET_1] & (1 << 10);
668}
669
670static inline bool ata_id_has_wcache(const u16 *id)
671{
672 /* Yes children, word 83 valid bits cover word 82 data */
673 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
674 return false;
675 return id[ATA_ID_COMMAND_SET_1] & (1 << 5);
676}
677
678static inline bool ata_id_has_pm(const u16 *id)
679{
680 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
681 return false;
682 return id[ATA_ID_COMMAND_SET_1] & (1 << 3);
683}
684
685static inline bool ata_id_rahead_enabled(const u16 *id)
686{
687 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
688 return false;
689 return id[ATA_ID_CFS_ENABLE_1] & (1 << 6);
690}
691
692static inline bool ata_id_wcache_enabled(const u16 *id)
693{
694 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
695 return false;
696 return id[ATA_ID_CFS_ENABLE_1] & (1 << 5);
697}
698
699/**
700 * ata_id_major_version - get ATA level of drive
701 * @id: Identify data
702 *
703 * Caveats:
704 * ATA-1 considers identify optional
705 * ATA-2 introduces mandatory identify
706 * ATA-3 introduces word 80 and accurate reporting
707 *
708 * The practical impact of this is that ata_id_major_version cannot
709 * reliably report on drives below ATA3.
710 */
711
712static inline unsigned int ata_id_major_version(const u16 *id)
713{
714 unsigned int mver;
715
716 if (id[ATA_ID_MAJOR_VER] == 0xFFFF)
717 return 0;
718
719 for (mver = 14; mver >= 1; mver--)
720 if (id[ATA_ID_MAJOR_VER] & (1 << mver))
721 break;
722 return mver;
723}
724
725static inline bool ata_id_is_sata(const u16 *id)
726{
727 /*
728 * See if word 93 is 0 AND drive is at least ATA-5 compatible
729 * verifying that word 80 by casting it to a signed type --
730 * this trick allows us to filter out the reserved values of
731 * 0x0000 and 0xffff along with the earlier ATA revisions...
732 */
733 if (id[ATA_ID_HW_CONFIG] == 0 && (short)id[ATA_ID_MAJOR_VER] >= 0x0020)
734 return true;
735 return false;
736}
737
738static inline bool ata_id_has_tpm(const u16 *id)
739{
740 /* The TPM bits are only valid on ATA8 */
741 if (ata_id_major_version(id) < 8)
742 return false;
743 if ((id[48] & 0xC000) != 0x4000)
744 return false;
745 return id[48] & (1 << 0);
746}
747
748static inline bool ata_id_has_dword_io(const u16 *id)
749{
750 /* ATA 8 reuses this flag for "trusted" computing */
751 if (ata_id_major_version(id) > 7)
752 return false;
753 return id[ATA_ID_DWORD_IO] & (1 << 0);
754}
755
756static inline bool ata_id_has_unload(const u16 *id)
757{
758 if (ata_id_major_version(id) >= 7 &&
759 (id[ATA_ID_CFSSE] & 0xC000) == 0x4000 &&
760 id[ATA_ID_CFSSE] & (1 << 13))
761 return true;
762 return false;
763}
764
765static inline bool ata_id_has_wwn(const u16 *id)
766{
767 return (id[ATA_ID_CSF_DEFAULT] & 0xC100) == 0x4100;
768}
769
770static 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
785static 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
798static inline bool ata_id_has_ncq_send_and_recv(const u16 *id)
799{
800 return id[ATA_ID_SATA_CAPABILITY_2] & BIT(6);
801}
802
803static inline bool ata_id_has_trim(const u16 *id)
804{
805 if (ata_id_major_version(id) >= 7 &&
806 (id[ATA_ID_DATA_SET_MGMT] & 1))
807 return true;
808 return false;
809}
810
811static inline bool ata_id_has_zero_after_trim(const u16 *id)
812{
813 /* DSM supported, deterministic read, and read zero after trim set */
814 if (ata_id_has_trim(id) &&
815 (id[ATA_ID_ADDITIONAL_SUPP] & 0x4020) == 0x4020)
816 return true;
817
818 return false;
819}
820
821static inline bool ata_id_current_chs_valid(const u16 *id)
822{
823 /* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command
824 has not been issued to the device then the values of
825 id[ATA_ID_CUR_CYLS] to id[ATA_ID_CUR_SECTORS] are vendor specific. */
826 return (id[ATA_ID_FIELD_VALID] & 1) && /* Current translation valid */
827 id[ATA_ID_CUR_CYLS] && /* cylinders in current translation */
828 id[ATA_ID_CUR_HEADS] && /* heads in current translation */
829 id[ATA_ID_CUR_HEADS] <= 16 &&
830 id[ATA_ID_CUR_SECTORS]; /* sectors in current translation */
831}
832
833static inline bool ata_id_is_cfa(const u16 *id)
834{
835 if ((id[ATA_ID_CONFIG] == 0x848A) || /* Traditional CF */
836 (id[ATA_ID_CONFIG] == 0x844A)) /* Delkin Devices CF */
837 return true;
838 /*
839 * CF specs don't require specific value in the word 0 anymore and yet
840 * they forbid to report the ATA version in the word 80 and require the
841 * CFA feature set support to be indicated in the word 83 in this case.
842 * Unfortunately, some cards only follow either of this requirements,
843 * and while those that don't indicate CFA feature support need some
844 * sort of quirk list, it seems impractical for the ones that do...
845 */
846 return (id[ATA_ID_COMMAND_SET_2] & 0xC004) == 0x4004;
847}
848
849static inline bool ata_id_is_ssd(const u16 *id)
850{
851 return id[ATA_ID_ROT_SPEED] == 0x01;
852}
853
854static inline bool ata_id_pio_need_iordy(const u16 *id, const u8 pio)
855{
856 /* CF spec. r4.1 Table 22 says no IORDY on PIO5 and PIO6. */
857 if (pio > 4 && ata_id_is_cfa(id))
858 return false;
859 /* For PIO3 and higher it is mandatory. */
860 if (pio > 2)
861 return true;
862 /* Turn it on when possible. */
863 return ata_id_has_iordy(id);
864}
865
866static inline bool ata_drive_40wire(const u16 *dev_id)
867{
868 if (ata_id_is_sata(dev_id))
869 return false; /* SATA */
870 if ((dev_id[ATA_ID_HW_CONFIG] & 0xE000) == 0x6000)
871 return false; /* 80 wire */
872 return true;
873}
874
875static inline bool ata_drive_40wire_relaxed(const u16 *dev_id)
876{
877 if ((dev_id[ATA_ID_HW_CONFIG] & 0x2000) == 0x2000)
878 return false; /* 80 wire */
879 return true;
880}
881
882static inline int atapi_cdb_len(const u16 *dev_id)
883{
884 u16 tmp = dev_id[ATA_ID_CONFIG] & 0x3;
885 switch (tmp) {
886 case 0: return 12;
887 case 1: return 16;
888 default: return -1;
889 }
890}
891
892static inline int atapi_command_packet_set(const u16 *dev_id)
893{
894 return (dev_id[ATA_ID_CONFIG] >> 8) & 0x1f;
895}
896
897static inline bool atapi_id_dmadir(const u16 *dev_id)
898{
899 return ata_id_major_version(dev_id) >= 7 && (dev_id[62] & 0x8000);
900}
901
902/*
903 * ata_id_is_lba_capacity_ok() performs a sanity check on
904 * the claimed LBA capacity value for the device.
905 *
906 * Returns 1 if LBA capacity looks sensible, 0 otherwise.
907 *
908 * It is called only once for each device.
909 */
910static inline bool ata_id_is_lba_capacity_ok(u16 *id)
911{
912 unsigned long lba_sects, chs_sects, head, tail;
913
914 /* No non-LBA info .. so valid! */
915 if (id[ATA_ID_CYLS] == 0)
916 return true;
917
918 lba_sects = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
919
920 /*
921 * The ATA spec tells large drives to return
922 * C/H/S = 16383/16/63 independent of their size.
923 * Some drives can be jumpered to use 15 heads instead of 16.
924 * Some drives can be jumpered to use 4092 cyls instead of 16383.
925 */
926 if ((id[ATA_ID_CYLS] == 16383 ||
927 (id[ATA_ID_CYLS] == 4092 && id[ATA_ID_CUR_CYLS] == 16383)) &&
928 id[ATA_ID_SECTORS] == 63 &&
929 (id[ATA_ID_HEADS] == 15 || id[ATA_ID_HEADS] == 16) &&
930 (lba_sects >= 16383 * 63 * id[ATA_ID_HEADS]))
931 return true;
932
933 chs_sects = id[ATA_ID_CYLS] * id[ATA_ID_HEADS] * id[ATA_ID_SECTORS];
934
935 /* perform a rough sanity check on lba_sects: within 10% is OK */
936 if (lba_sects - chs_sects < chs_sects/10)
937 return true;
938
939 /* some drives have the word order reversed */
940 head = (lba_sects >> 16) & 0xffff;
941 tail = lba_sects & 0xffff;
942 lba_sects = head | (tail << 16);
943
944 if (lba_sects - chs_sects < chs_sects/10) {
945 *(__le32 *)&id[ATA_ID_LBA_CAPACITY] = __cpu_to_le32(lba_sects);
946 return true; /* LBA capacity is (now) good */
947 }
948
949 return false; /* LBA capacity value may be bad */
950}
951
952static inline void ata_id_to_hd_driveid(u16 *id)
953{
954#ifdef __BIG_ENDIAN
955 /* accessed in struct hd_driveid as 8-bit values */
956 id[ATA_ID_MAX_MULTSECT] = __cpu_to_le16(id[ATA_ID_MAX_MULTSECT]);
957 id[ATA_ID_CAPABILITY] = __cpu_to_le16(id[ATA_ID_CAPABILITY]);
958 id[ATA_ID_OLD_PIO_MODES] = __cpu_to_le16(id[ATA_ID_OLD_PIO_MODES]);
959 id[ATA_ID_OLD_DMA_MODES] = __cpu_to_le16(id[ATA_ID_OLD_DMA_MODES]);
960 id[ATA_ID_MULTSECT] = __cpu_to_le16(id[ATA_ID_MULTSECT]);
961
962 /* as 32-bit values */
963 *(u32 *)&id[ATA_ID_LBA_CAPACITY] = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
964 *(u32 *)&id[ATA_ID_SPG] = ata_id_u32(id, ATA_ID_SPG);
965
966 /* as 64-bit value */
967 *(u64 *)&id[ATA_ID_LBA_CAPACITY_2] =
968 ata_id_u64(id, ATA_ID_LBA_CAPACITY_2);
969#endif
970}
971
972/*
973 * Write LBA Range Entries to the buffer that will cover the extent from
974 * sector to sector + count. This is used for TRIM and for ADD LBA(S)
975 * TO NV CACHE PINNED SET.
976 */
977static inline unsigned ata_set_lba_range_entries(void *_buffer,
978 unsigned buf_size, u64 sector, unsigned long count)
979{
980 __le64 *buffer = _buffer;
981 unsigned i = 0, used_bytes;
982
983 while (i < buf_size / 8 ) { /* 6-byte LBA + 2-byte range per entry */
984 u64 entry = sector |
985 ((u64)(count > 0xffff ? 0xffff : count) << 48);
986 buffer[i++] = __cpu_to_le64(entry);
987 if (count <= 0xffff)
988 break;
989 count -= 0xffff;
990 sector += 0xffff;
991 }
992
993 used_bytes = ALIGN(i * 8, 512);
994 memset(buffer + i, 0, used_bytes - i * 8);
995 return used_bytes;
996}
997
998static inline bool ata_ok(u8 status)
999{
1000 return ((status & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ | ATA_ERR))
1001 == ATA_DRDY);
1002}
1003
1004static inline bool lba_28_ok(u64 block, u32 n_block)
1005{
1006 /* check the ending block number: must be LESS THAN 0x0fffffff */
1007 return ((block + n_block) < ((1 << 28) - 1)) && (n_block <= 256);
1008}
1009
1010static inline bool lba_48_ok(u64 block, u32 n_block)
1011{
1012 /* check the ending block number */
1013 return ((block + n_block - 1) < ((u64)1 << 48)) && (n_block <= 65536);
1014}
1015
1016#define sata_pmp_gscr_vendor(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] & 0xffff)
1017#define sata_pmp_gscr_devid(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] >> 16)
1018#define sata_pmp_gscr_rev(gscr) (((gscr)[SATA_PMP_GSCR_REV] >> 8) & 0xff)
1019#define sata_pmp_gscr_ports(gscr) ((gscr)[SATA_PMP_GSCR_PORT_INFO] & 0xf)
1020
1021#endif /* __LINUX_ATA_H__ */