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Merge tag 'v3.10.55' into update
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / include / linux / ata.h
1
2 /*
3 * Copyright 2003-2004 Red Hat, Inc. All rights reserved.
4 * Copyright 2003-2004 Jeff Garzik
5 *
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2, or (at your option)
10 * any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; see the file COPYING. If not, write to
19 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
20 *
21 *
22 * libata documentation is available via 'make {ps|pdf}docs',
23 * as Documentation/DocBook/libata.*
24 *
25 * Hardware documentation available from http://www.t13.org/
26 *
27 */
28
29 #ifndef __LINUX_ATA_H__
30 #define __LINUX_ATA_H__
31
32 #include <linux/kernel.h>
33 #include <linux/string.h>
34 #include <linux/types.h>
35 #include <asm/byteorder.h>
36
37 /* defines only for the constants which don't work well as enums */
38 #define ATA_DMA_BOUNDARY 0xffffUL
39 #define ATA_DMA_MASK 0xffffffffULL
40
41 enum {
42 /* various global constants */
43 ATA_MAX_DEVICES = 2, /* per bus/port */
44 ATA_MAX_PRD = 256, /* we could make these 256/256 */
45 ATA_SECT_SIZE = 512,
46 ATA_MAX_SECTORS_128 = 128,
47 ATA_MAX_SECTORS = 256,
48 ATA_MAX_SECTORS_LBA48 = 65535,/* TODO: 65536? */
49 ATA_MAX_SECTORS_TAPE = 65535,
50
51 ATA_ID_WORDS = 256,
52 ATA_ID_CONFIG = 0,
53 ATA_ID_CYLS = 1,
54 ATA_ID_HEADS = 3,
55 ATA_ID_SECTORS = 6,
56 ATA_ID_SERNO = 10,
57 ATA_ID_BUF_SIZE = 21,
58 ATA_ID_FW_REV = 23,
59 ATA_ID_PROD = 27,
60 ATA_ID_MAX_MULTSECT = 47,
61 ATA_ID_DWORD_IO = 48,
62 ATA_ID_CAPABILITY = 49,
63 ATA_ID_OLD_PIO_MODES = 51,
64 ATA_ID_OLD_DMA_MODES = 52,
65 ATA_ID_FIELD_VALID = 53,
66 ATA_ID_CUR_CYLS = 54,
67 ATA_ID_CUR_HEADS = 55,
68 ATA_ID_CUR_SECTORS = 56,
69 ATA_ID_MULTSECT = 59,
70 ATA_ID_LBA_CAPACITY = 60,
71 ATA_ID_SWDMA_MODES = 62,
72 ATA_ID_MWDMA_MODES = 63,
73 ATA_ID_PIO_MODES = 64,
74 ATA_ID_EIDE_DMA_MIN = 65,
75 ATA_ID_EIDE_DMA_TIME = 66,
76 ATA_ID_EIDE_PIO = 67,
77 ATA_ID_EIDE_PIO_IORDY = 68,
78 ATA_ID_ADDITIONAL_SUPP = 69,
79 ATA_ID_QUEUE_DEPTH = 75,
80 ATA_ID_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_NOP = 0x00,
223 ATA_CMD_FLUSH = 0xE7,
224 ATA_CMD_FLUSH_EXT = 0xEA,
225 ATA_CMD_ID_ATA = 0xEC,
226 ATA_CMD_ID_ATAPI = 0xA1,
227 ATA_CMD_SERVICE = 0xA2,
228 ATA_CMD_READ = 0xC8,
229 ATA_CMD_READ_EXT = 0x25,
230 ATA_CMD_READ_QUEUED = 0x26,
231 ATA_CMD_READ_STREAM_EXT = 0x2B,
232 ATA_CMD_READ_STREAM_DMA_EXT = 0x2A,
233 ATA_CMD_WRITE = 0xCA,
234 ATA_CMD_WRITE_EXT = 0x35,
235 ATA_CMD_WRITE_QUEUED = 0x36,
236 ATA_CMD_WRITE_STREAM_EXT = 0x3B,
237 ATA_CMD_WRITE_STREAM_DMA_EXT = 0x3A,
238 ATA_CMD_WRITE_FUA_EXT = 0x3D,
239 ATA_CMD_WRITE_QUEUED_FUA_EXT = 0x3E,
240 ATA_CMD_FPDMA_READ = 0x60,
241 ATA_CMD_FPDMA_WRITE = 0x61,
242 ATA_CMD_PIO_READ = 0x20,
243 ATA_CMD_PIO_READ_EXT = 0x24,
244 ATA_CMD_PIO_WRITE = 0x30,
245 ATA_CMD_PIO_WRITE_EXT = 0x34,
246 ATA_CMD_READ_MULTI = 0xC4,
247 ATA_CMD_READ_MULTI_EXT = 0x29,
248 ATA_CMD_WRITE_MULTI = 0xC5,
249 ATA_CMD_WRITE_MULTI_EXT = 0x39,
250 ATA_CMD_WRITE_MULTI_FUA_EXT = 0xCE,
251 ATA_CMD_SET_FEATURES = 0xEF,
252 ATA_CMD_SET_MULTI = 0xC6,
253 ATA_CMD_PACKET = 0xA0,
254 ATA_CMD_VERIFY = 0x40,
255 ATA_CMD_VERIFY_EXT = 0x42,
256 ATA_CMD_WRITE_UNCORR_EXT = 0x45,
257 ATA_CMD_STANDBYNOW1 = 0xE0,
258 ATA_CMD_IDLEIMMEDIATE = 0xE1,
259 ATA_CMD_SLEEP = 0xE6,
260 ATA_CMD_INIT_DEV_PARAMS = 0x91,
261 ATA_CMD_READ_NATIVE_MAX = 0xF8,
262 ATA_CMD_READ_NATIVE_MAX_EXT = 0x27,
263 ATA_CMD_SET_MAX = 0xF9,
264 ATA_CMD_SET_MAX_EXT = 0x37,
265 ATA_CMD_READ_LOG_EXT = 0x2F,
266 ATA_CMD_WRITE_LOG_EXT = 0x3F,
267 ATA_CMD_READ_LOG_DMA_EXT = 0x47,
268 ATA_CMD_WRITE_LOG_DMA_EXT = 0x57,
269 ATA_CMD_TRUSTED_RCV = 0x5C,
270 ATA_CMD_TRUSTED_RCV_DMA = 0x5D,
271 ATA_CMD_TRUSTED_SND = 0x5E,
272 ATA_CMD_TRUSTED_SND_DMA = 0x5F,
273 ATA_CMD_PMP_READ = 0xE4,
274 ATA_CMD_PMP_WRITE = 0xE8,
275 ATA_CMD_CONF_OVERLAY = 0xB1,
276 ATA_CMD_SEC_SET_PASS = 0xF1,
277 ATA_CMD_SEC_UNLOCK = 0xF2,
278 ATA_CMD_SEC_ERASE_PREP = 0xF3,
279 ATA_CMD_SEC_ERASE_UNIT = 0xF4,
280 ATA_CMD_SEC_FREEZE_LOCK = 0xF5,
281 ATA_CMD_SEC_DISABLE_PASS = 0xF6,
282 ATA_CMD_CONFIG_STREAM = 0x51,
283 ATA_CMD_SMART = 0xB0,
284 ATA_CMD_MEDIA_LOCK = 0xDE,
285 ATA_CMD_MEDIA_UNLOCK = 0xDF,
286 ATA_CMD_DSM = 0x06,
287 ATA_CMD_CHK_MED_CRD_TYP = 0xD1,
288 ATA_CMD_CFA_REQ_EXT_ERR = 0x03,
289 ATA_CMD_CFA_WRITE_NE = 0x38,
290 ATA_CMD_CFA_TRANS_SECT = 0x87,
291 ATA_CMD_CFA_ERASE = 0xC0,
292 ATA_CMD_CFA_WRITE_MULT_NE = 0xCD,
293 /* marked obsolete in the ATA/ATAPI-7 spec */
294 ATA_CMD_RESTORE = 0x10,
295
296 /* READ_LOG_EXT pages */
297 ATA_LOG_SATA_NCQ = 0x10,
298 ATA_LOG_SATA_ID_DEV_DATA = 0x30,
299 ATA_LOG_SATA_SETTINGS = 0x08,
300 ATA_LOG_DEVSLP_OFFSET = 0x30,
301 ATA_LOG_DEVSLP_SIZE = 0x08,
302 ATA_LOG_DEVSLP_MDAT = 0x00,
303 ATA_LOG_DEVSLP_MDAT_MASK = 0x1F,
304 ATA_LOG_DEVSLP_DETO = 0x01,
305 ATA_LOG_DEVSLP_VALID = 0x07,
306 ATA_LOG_DEVSLP_VALID_MASK = 0x80,
307
308 /* READ/WRITE LONG (obsolete) */
309 ATA_CMD_READ_LONG = 0x22,
310 ATA_CMD_READ_LONG_ONCE = 0x23,
311 ATA_CMD_WRITE_LONG = 0x32,
312 ATA_CMD_WRITE_LONG_ONCE = 0x33,
313
314 /* SETFEATURES stuff */
315 SETFEATURES_XFER = 0x03,
316 XFER_UDMA_7 = 0x47,
317 XFER_UDMA_6 = 0x46,
318 XFER_UDMA_5 = 0x45,
319 XFER_UDMA_4 = 0x44,
320 XFER_UDMA_3 = 0x43,
321 XFER_UDMA_2 = 0x42,
322 XFER_UDMA_1 = 0x41,
323 XFER_UDMA_0 = 0x40,
324 XFER_MW_DMA_4 = 0x24, /* CFA only */
325 XFER_MW_DMA_3 = 0x23, /* CFA only */
326 XFER_MW_DMA_2 = 0x22,
327 XFER_MW_DMA_1 = 0x21,
328 XFER_MW_DMA_0 = 0x20,
329 XFER_SW_DMA_2 = 0x12,
330 XFER_SW_DMA_1 = 0x11,
331 XFER_SW_DMA_0 = 0x10,
332 XFER_PIO_6 = 0x0E, /* CFA only */
333 XFER_PIO_5 = 0x0D, /* CFA only */
334 XFER_PIO_4 = 0x0C,
335 XFER_PIO_3 = 0x0B,
336 XFER_PIO_2 = 0x0A,
337 XFER_PIO_1 = 0x09,
338 XFER_PIO_0 = 0x08,
339 XFER_PIO_SLOW = 0x00,
340
341 SETFEATURES_WC_ON = 0x02, /* Enable write cache */
342 SETFEATURES_WC_OFF = 0x82, /* Disable write cache */
343
344 /* Enable/Disable Automatic Acoustic Management */
345 SETFEATURES_AAM_ON = 0x42,
346 SETFEATURES_AAM_OFF = 0xC2,
347
348 SETFEATURES_SPINUP = 0x07, /* Spin-up drive */
349
350 SETFEATURES_SATA_ENABLE = 0x10, /* Enable use of SATA feature */
351 SETFEATURES_SATA_DISABLE = 0x90, /* Disable use of SATA feature */
352
353 /* SETFEATURE Sector counts for SATA features */
354 SATA_FPDMA_OFFSET = 0x01, /* FPDMA non-zero buffer offsets */
355 SATA_FPDMA_AA = 0x02, /* FPDMA Setup FIS Auto-Activate */
356 SATA_DIPM = 0x03, /* Device Initiated Power Management */
357 SATA_FPDMA_IN_ORDER = 0x04, /* FPDMA in-order data delivery */
358 SATA_AN = 0x05, /* Asynchronous Notification */
359 SATA_SSP = 0x06, /* Software Settings Preservation */
360 SATA_DEVSLP = 0x09, /* Device Sleep */
361
362 /* feature values for SET_MAX */
363 ATA_SET_MAX_ADDR = 0x00,
364 ATA_SET_MAX_PASSWD = 0x01,
365 ATA_SET_MAX_LOCK = 0x02,
366 ATA_SET_MAX_UNLOCK = 0x03,
367 ATA_SET_MAX_FREEZE_LOCK = 0x04,
368
369 /* feature values for DEVICE CONFIGURATION OVERLAY */
370 ATA_DCO_RESTORE = 0xC0,
371 ATA_DCO_FREEZE_LOCK = 0xC1,
372 ATA_DCO_IDENTIFY = 0xC2,
373 ATA_DCO_SET = 0xC3,
374
375 /* feature values for SMART */
376 ATA_SMART_ENABLE = 0xD8,
377 ATA_SMART_READ_VALUES = 0xD0,
378 ATA_SMART_READ_THRESHOLDS = 0xD1,
379
380 /* feature values for Data Set Management */
381 ATA_DSM_TRIM = 0x01,
382
383 /* password used in LBA Mid / LBA High for executing SMART commands */
384 ATA_SMART_LBAM_PASS = 0x4F,
385 ATA_SMART_LBAH_PASS = 0xC2,
386
387 /* ATAPI stuff */
388 ATAPI_PKT_DMA = (1 << 0),
389 ATAPI_DMADIR = (1 << 2), /* ATAPI data dir:
390 0=to device, 1=to host */
391 ATAPI_CDB_LEN = 16,
392
393 /* PMP stuff */
394 SATA_PMP_MAX_PORTS = 15,
395 SATA_PMP_CTRL_PORT = 15,
396
397 SATA_PMP_GSCR_DWORDS = 128,
398 SATA_PMP_GSCR_PROD_ID = 0,
399 SATA_PMP_GSCR_REV = 1,
400 SATA_PMP_GSCR_PORT_INFO = 2,
401 SATA_PMP_GSCR_ERROR = 32,
402 SATA_PMP_GSCR_ERROR_EN = 33,
403 SATA_PMP_GSCR_FEAT = 64,
404 SATA_PMP_GSCR_FEAT_EN = 96,
405
406 SATA_PMP_PSCR_STATUS = 0,
407 SATA_PMP_PSCR_ERROR = 1,
408 SATA_PMP_PSCR_CONTROL = 2,
409
410 SATA_PMP_FEAT_BIST = (1 << 0),
411 SATA_PMP_FEAT_PMREQ = (1 << 1),
412 SATA_PMP_FEAT_DYNSSC = (1 << 2),
413 SATA_PMP_FEAT_NOTIFY = (1 << 3),
414
415 /* cable types */
416 ATA_CBL_NONE = 0,
417 ATA_CBL_PATA40 = 1,
418 ATA_CBL_PATA80 = 2,
419 ATA_CBL_PATA40_SHORT = 3, /* 40 wire cable to high UDMA spec */
420 ATA_CBL_PATA_UNK = 4, /* don't know, maybe 80c? */
421 ATA_CBL_PATA_IGN = 5, /* don't know, ignore cable handling */
422 ATA_CBL_SATA = 6,
423
424 /* SATA Status and Control Registers */
425 SCR_STATUS = 0,
426 SCR_ERROR = 1,
427 SCR_CONTROL = 2,
428 SCR_ACTIVE = 3,
429 SCR_NOTIFICATION = 4,
430
431 /* SError bits */
432 SERR_DATA_RECOVERED = (1 << 0), /* recovered data error */
433 SERR_COMM_RECOVERED = (1 << 1), /* recovered comm failure */
434 SERR_DATA = (1 << 8), /* unrecovered data error */
435 SERR_PERSISTENT = (1 << 9), /* persistent data/comm error */
436 SERR_PROTOCOL = (1 << 10), /* protocol violation */
437 SERR_INTERNAL = (1 << 11), /* host internal error */
438 SERR_PHYRDY_CHG = (1 << 16), /* PHY RDY changed */
439 SERR_PHY_INT_ERR = (1 << 17), /* PHY internal error */
440 SERR_COMM_WAKE = (1 << 18), /* Comm wake */
441 SERR_10B_8B_ERR = (1 << 19), /* 10b to 8b decode error */
442 SERR_DISPARITY = (1 << 20), /* Disparity */
443 SERR_CRC = (1 << 21), /* CRC error */
444 SERR_HANDSHAKE = (1 << 22), /* Handshake error */
445 SERR_LINK_SEQ_ERR = (1 << 23), /* Link sequence error */
446 SERR_TRANS_ST_ERROR = (1 << 24), /* Transport state trans. error */
447 SERR_UNRECOG_FIS = (1 << 25), /* Unrecognized FIS */
448 SERR_DEV_XCHG = (1 << 26), /* device exchanged */
449
450 /* struct ata_taskfile flags */
451 ATA_TFLAG_LBA48 = (1 << 0), /* enable 48-bit LBA and "HOB" */
452 ATA_TFLAG_ISADDR = (1 << 1), /* enable r/w to nsect/lba regs */
453 ATA_TFLAG_DEVICE = (1 << 2), /* enable r/w to device reg */
454 ATA_TFLAG_WRITE = (1 << 3), /* data dir: host->dev==1 (write) */
455 ATA_TFLAG_LBA = (1 << 4), /* enable LBA */
456 ATA_TFLAG_FUA = (1 << 5), /* enable FUA */
457 ATA_TFLAG_POLLING = (1 << 6), /* set nIEN to 1 and use polling */
458
459 /* protocol flags */
460 ATA_PROT_FLAG_PIO = (1 << 0), /* is PIO */
461 ATA_PROT_FLAG_DMA = (1 << 1), /* is DMA */
462 ATA_PROT_FLAG_DATA = ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA,
463 ATA_PROT_FLAG_NCQ = (1 << 2), /* is NCQ */
464 ATA_PROT_FLAG_ATAPI = (1 << 3), /* is ATAPI */
465 };
466
467 enum ata_tf_protocols {
468 /* ATA taskfile protocols */
469 ATA_PROT_UNKNOWN, /* unknown/invalid */
470 ATA_PROT_NODATA, /* no data */
471 ATA_PROT_PIO, /* PIO data xfer */
472 ATA_PROT_DMA, /* DMA */
473 ATA_PROT_NCQ, /* NCQ */
474 ATAPI_PROT_NODATA, /* packet command, no data */
475 ATAPI_PROT_PIO, /* packet command, PIO data xfer*/
476 ATAPI_PROT_DMA, /* packet command with special DMA sauce */
477 };
478
479 enum ata_ioctls {
480 ATA_IOC_GET_IO32 = 0x309,
481 ATA_IOC_SET_IO32 = 0x324,
482 };
483
484 /* core structures */
485
486 struct ata_bmdma_prd {
487 __le32 addr;
488 __le32 flags_len;
489 };
490
491 struct ata_taskfile {
492 unsigned long flags; /* ATA_TFLAG_xxx */
493 u8 protocol; /* ATA_PROT_xxx */
494
495 u8 ctl; /* control reg */
496
497 u8 hob_feature; /* additional data */
498 u8 hob_nsect; /* to support LBA48 */
499 u8 hob_lbal;
500 u8 hob_lbam;
501 u8 hob_lbah;
502
503 u8 feature;
504 u8 nsect;
505 u8 lbal;
506 u8 lbam;
507 u8 lbah;
508
509 u8 device;
510
511 u8 command; /* IO operation */
512 };
513
514 /*
515 * protocol tests
516 */
517 static inline unsigned int ata_prot_flags(u8 prot)
518 {
519 switch (prot) {
520 case ATA_PROT_NODATA:
521 return 0;
522 case ATA_PROT_PIO:
523 return ATA_PROT_FLAG_PIO;
524 case ATA_PROT_DMA:
525 return ATA_PROT_FLAG_DMA;
526 case ATA_PROT_NCQ:
527 return ATA_PROT_FLAG_DMA | ATA_PROT_FLAG_NCQ;
528 case ATAPI_PROT_NODATA:
529 return ATA_PROT_FLAG_ATAPI;
530 case ATAPI_PROT_PIO:
531 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_PIO;
532 case ATAPI_PROT_DMA:
533 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_DMA;
534 }
535 return 0;
536 }
537
538 static inline int ata_is_atapi(u8 prot)
539 {
540 return ata_prot_flags(prot) & ATA_PROT_FLAG_ATAPI;
541 }
542
543 static inline int ata_is_nodata(u8 prot)
544 {
545 return !(ata_prot_flags(prot) & ATA_PROT_FLAG_DATA);
546 }
547
548 static inline int ata_is_pio(u8 prot)
549 {
550 return ata_prot_flags(prot) & ATA_PROT_FLAG_PIO;
551 }
552
553 static inline int ata_is_dma(u8 prot)
554 {
555 return ata_prot_flags(prot) & ATA_PROT_FLAG_DMA;
556 }
557
558 static inline int ata_is_ncq(u8 prot)
559 {
560 return ata_prot_flags(prot) & ATA_PROT_FLAG_NCQ;
561 }
562
563 static inline int ata_is_data(u8 prot)
564 {
565 return ata_prot_flags(prot) & ATA_PROT_FLAG_DATA;
566 }
567
568 /*
569 * id tests
570 */
571 #define ata_id_is_ata(id) (((id)[ATA_ID_CONFIG] & (1 << 15)) == 0)
572 #define ata_id_has_lba(id) ((id)[ATA_ID_CAPABILITY] & (1 << 9))
573 #define ata_id_has_dma(id) ((id)[ATA_ID_CAPABILITY] & (1 << 8))
574 #define ata_id_has_ncq(id) ((id)[ATA_ID_SATA_CAPABILITY] & (1 << 8))
575 #define ata_id_queue_depth(id) (((id)[ATA_ID_QUEUE_DEPTH] & 0x1f) + 1)
576 #define ata_id_removeable(id) ((id)[ATA_ID_CONFIG] & (1 << 7))
577 #define ata_id_has_atapi_AN(id) \
578 ((((id)[ATA_ID_SATA_CAPABILITY] != 0x0000) && \
579 ((id)[ATA_ID_SATA_CAPABILITY] != 0xffff)) && \
580 ((id)[ATA_ID_FEATURE_SUPP] & (1 << 5)))
581 #define ata_id_has_fpdma_aa(id) \
582 ((((id)[ATA_ID_SATA_CAPABILITY] != 0x0000) && \
583 ((id)[ATA_ID_SATA_CAPABILITY] != 0xffff)) && \
584 ((id)[ATA_ID_FEATURE_SUPP] & (1 << 2)))
585 #define ata_id_iordy_disable(id) ((id)[ATA_ID_CAPABILITY] & (1 << 10))
586 #define ata_id_has_iordy(id) ((id)[ATA_ID_CAPABILITY] & (1 << 11))
587 #define ata_id_u32(id,n) \
588 (((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)]))
589 #define ata_id_u64(id,n) \
590 ( ((u64) (id)[(n) + 3] << 48) | \
591 ((u64) (id)[(n) + 2] << 32) | \
592 ((u64) (id)[(n) + 1] << 16) | \
593 ((u64) (id)[(n) + 0]) )
594
595 #define ata_id_cdb_intr(id) (((id)[ATA_ID_CONFIG] & 0x60) == 0x20)
596 #define ata_id_has_da(id) ((id)[ATA_ID_SATA_CAPABILITY_2] & (1 << 4))
597 #define ata_id_has_devslp(id) ((id)[ATA_ID_FEATURE_SUPP] & (1 << 8))
598
599 static inline bool ata_id_has_hipm(const u16 *id)
600 {
601 u16 val = id[ATA_ID_SATA_CAPABILITY];
602
603 if (val == 0 || val == 0xffff)
604 return false;
605
606 return val & (1 << 9);
607 }
608
609 static inline bool ata_id_has_dipm(const u16 *id)
610 {
611 u16 val = id[ATA_ID_FEATURE_SUPP];
612
613 if (val == 0 || val == 0xffff)
614 return false;
615
616 return val & (1 << 3);
617 }
618
619
620 static inline bool ata_id_has_fua(const u16 *id)
621 {
622 if ((id[ATA_ID_CFSSE] & 0xC000) != 0x4000)
623 return false;
624 return id[ATA_ID_CFSSE] & (1 << 6);
625 }
626
627 static inline bool ata_id_has_flush(const u16 *id)
628 {
629 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
630 return false;
631 return id[ATA_ID_COMMAND_SET_2] & (1 << 12);
632 }
633
634 static inline bool ata_id_flush_enabled(const u16 *id)
635 {
636 if (ata_id_has_flush(id) == 0)
637 return false;
638 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
639 return false;
640 return id[ATA_ID_CFS_ENABLE_2] & (1 << 12);
641 }
642
643 static inline bool ata_id_has_flush_ext(const u16 *id)
644 {
645 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
646 return false;
647 return id[ATA_ID_COMMAND_SET_2] & (1 << 13);
648 }
649
650 static inline bool ata_id_flush_ext_enabled(const u16 *id)
651 {
652 if (ata_id_has_flush_ext(id) == 0)
653 return false;
654 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
655 return false;
656 /*
657 * some Maxtor disks have bit 13 defined incorrectly
658 * so check bit 10 too
659 */
660 return (id[ATA_ID_CFS_ENABLE_2] & 0x2400) == 0x2400;
661 }
662
663 static inline u32 ata_id_logical_sector_size(const u16 *id)
664 {
665 /* T13/1699-D Revision 6a, Sep 6, 2008. Page 128.
666 * IDENTIFY DEVICE data, word 117-118.
667 * 0xd000 ignores bit 13 (logical:physical > 1)
668 */
669 if ((id[ATA_ID_SECTOR_SIZE] & 0xd000) == 0x5000)
670 return (((id[ATA_ID_LOGICAL_SECTOR_SIZE+1] << 16)
671 + id[ATA_ID_LOGICAL_SECTOR_SIZE]) * sizeof(u16)) ;
672 return ATA_SECT_SIZE;
673 }
674
675 static inline u8 ata_id_log2_per_physical_sector(const u16 *id)
676 {
677 /* T13/1699-D Revision 6a, Sep 6, 2008. Page 128.
678 * IDENTIFY DEVICE data, word 106.
679 * 0xe000 ignores bit 12 (logical sector > 512 bytes)
680 */
681 if ((id[ATA_ID_SECTOR_SIZE] & 0xe000) == 0x6000)
682 return (id[ATA_ID_SECTOR_SIZE] & 0xf);
683 return 0;
684 }
685
686 /* Offset of logical sectors relative to physical sectors.
687 *
688 * If device has more than one logical sector per physical sector
689 * (aka 512 byte emulation), vendors might offset the "sector 0" address
690 * so sector 63 is "naturally aligned" - e.g. FAT partition table.
691 * This avoids Read/Mod/Write penalties when using FAT partition table
692 * and updating "well aligned" (FS perspective) physical sectors on every
693 * transaction.
694 */
695 static inline u16 ata_id_logical_sector_offset(const u16 *id,
696 u8 log2_per_phys)
697 {
698 u16 word_209 = id[209];
699
700 if ((log2_per_phys > 1) && (word_209 & 0xc000) == 0x4000) {
701 u16 first = word_209 & 0x3fff;
702 if (first > 0)
703 return (1 << log2_per_phys) - first;
704 }
705 return 0;
706 }
707
708 static inline bool ata_id_has_lba48(const u16 *id)
709 {
710 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
711 return false;
712 if (!ata_id_u64(id, ATA_ID_LBA_CAPACITY_2))
713 return false;
714 return id[ATA_ID_COMMAND_SET_2] & (1 << 10);
715 }
716
717 static inline bool ata_id_lba48_enabled(const u16 *id)
718 {
719 if (ata_id_has_lba48(id) == 0)
720 return false;
721 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
722 return false;
723 return id[ATA_ID_CFS_ENABLE_2] & (1 << 10);
724 }
725
726 static inline bool ata_id_hpa_enabled(const u16 *id)
727 {
728 /* Yes children, word 83 valid bits cover word 82 data */
729 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
730 return false;
731 /* And 87 covers 85-87 */
732 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
733 return false;
734 /* Check command sets enabled as well as supported */
735 if ((id[ATA_ID_CFS_ENABLE_1] & (1 << 10)) == 0)
736 return false;
737 return id[ATA_ID_COMMAND_SET_1] & (1 << 10);
738 }
739
740 static inline bool ata_id_has_wcache(const u16 *id)
741 {
742 /* Yes children, word 83 valid bits cover word 82 data */
743 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
744 return false;
745 return id[ATA_ID_COMMAND_SET_1] & (1 << 5);
746 }
747
748 static inline bool ata_id_has_pm(const u16 *id)
749 {
750 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
751 return false;
752 return id[ATA_ID_COMMAND_SET_1] & (1 << 3);
753 }
754
755 static inline bool ata_id_rahead_enabled(const u16 *id)
756 {
757 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
758 return false;
759 return id[ATA_ID_CFS_ENABLE_1] & (1 << 6);
760 }
761
762 static inline bool ata_id_wcache_enabled(const u16 *id)
763 {
764 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
765 return false;
766 return id[ATA_ID_CFS_ENABLE_1] & (1 << 5);
767 }
768
769 /**
770 * ata_id_major_version - get ATA level of drive
771 * @id: Identify data
772 *
773 * Caveats:
774 * ATA-1 considers identify optional
775 * ATA-2 introduces mandatory identify
776 * ATA-3 introduces word 80 and accurate reporting
777 *
778 * The practical impact of this is that ata_id_major_version cannot
779 * reliably report on drives below ATA3.
780 */
781
782 static inline unsigned int ata_id_major_version(const u16 *id)
783 {
784 unsigned int mver;
785
786 if (id[ATA_ID_MAJOR_VER] == 0xFFFF)
787 return 0;
788
789 for (mver = 14; mver >= 1; mver--)
790 if (id[ATA_ID_MAJOR_VER] & (1 << mver))
791 break;
792 return mver;
793 }
794
795 static inline bool ata_id_is_sata(const u16 *id)
796 {
797 /*
798 * See if word 93 is 0 AND drive is at least ATA-5 compatible
799 * verifying that word 80 by casting it to a signed type --
800 * this trick allows us to filter out the reserved values of
801 * 0x0000 and 0xffff along with the earlier ATA revisions...
802 */
803 if (id[ATA_ID_HW_CONFIG] == 0 && (short)id[ATA_ID_MAJOR_VER] >= 0x0020)
804 return true;
805 return false;
806 }
807
808 static inline bool ata_id_has_tpm(const u16 *id)
809 {
810 /* The TPM bits are only valid on ATA8 */
811 if (ata_id_major_version(id) < 8)
812 return false;
813 if ((id[48] & 0xC000) != 0x4000)
814 return false;
815 return id[48] & (1 << 0);
816 }
817
818 static inline bool ata_id_has_dword_io(const u16 *id)
819 {
820 /* ATA 8 reuses this flag for "trusted" computing */
821 if (ata_id_major_version(id) > 7)
822 return false;
823 return id[ATA_ID_DWORD_IO] & (1 << 0);
824 }
825
826 static inline bool ata_id_has_unload(const u16 *id)
827 {
828 if (ata_id_major_version(id) >= 7 &&
829 (id[ATA_ID_CFSSE] & 0xC000) == 0x4000 &&
830 id[ATA_ID_CFSSE] & (1 << 13))
831 return true;
832 return false;
833 }
834
835 static inline bool ata_id_has_wwn(const u16 *id)
836 {
837 return (id[ATA_ID_CSF_DEFAULT] & 0xC100) == 0x4100;
838 }
839
840 static inline int ata_id_form_factor(const u16 *id)
841 {
842 u16 val = id[168];
843
844 if (ata_id_major_version(id) < 7 || val == 0 || val == 0xffff)
845 return 0;
846
847 val &= 0xf;
848
849 if (val > 5)
850 return 0;
851
852 return val;
853 }
854
855 static inline int ata_id_rotation_rate(const u16 *id)
856 {
857 u16 val = id[217];
858
859 if (ata_id_major_version(id) < 7 || val == 0 || val == 0xffff)
860 return 0;
861
862 if (val > 1 && val < 0x401)
863 return 0;
864
865 return val;
866 }
867
868 static inline bool ata_id_has_trim(const u16 *id)
869 {
870 if (ata_id_major_version(id) >= 7 &&
871 (id[ATA_ID_DATA_SET_MGMT] & 1))
872 return true;
873 return false;
874 }
875
876 static inline bool ata_id_has_zero_after_trim(const u16 *id)
877 {
878 /* DSM supported, deterministic read, and read zero after trim set */
879 if (ata_id_has_trim(id) &&
880 (id[ATA_ID_ADDITIONAL_SUPP] & 0x4020) == 0x4020)
881 return true;
882
883 return false;
884 }
885
886 static inline bool ata_id_current_chs_valid(const u16 *id)
887 {
888 /* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command
889 has not been issued to the device then the values of
890 id[ATA_ID_CUR_CYLS] to id[ATA_ID_CUR_SECTORS] are vendor specific. */
891 return (id[ATA_ID_FIELD_VALID] & 1) && /* Current translation valid */
892 id[ATA_ID_CUR_CYLS] && /* cylinders in current translation */
893 id[ATA_ID_CUR_HEADS] && /* heads in current translation */
894 id[ATA_ID_CUR_HEADS] <= 16 &&
895 id[ATA_ID_CUR_SECTORS]; /* sectors in current translation */
896 }
897
898 static inline bool ata_id_is_cfa(const u16 *id)
899 {
900 if ((id[ATA_ID_CONFIG] == 0x848A) || /* Traditional CF */
901 (id[ATA_ID_CONFIG] == 0x844A)) /* Delkin Devices CF */
902 return true;
903 /*
904 * CF specs don't require specific value in the word 0 anymore and yet
905 * they forbid to report the ATA version in the word 80 and require the
906 * CFA feature set support to be indicated in the word 83 in this case.
907 * Unfortunately, some cards only follow either of this requirements,
908 * and while those that don't indicate CFA feature support need some
909 * sort of quirk list, it seems impractical for the ones that do...
910 */
911 return (id[ATA_ID_COMMAND_SET_2] & 0xC004) == 0x4004;
912 }
913
914 static inline bool ata_id_is_ssd(const u16 *id)
915 {
916 return id[ATA_ID_ROT_SPEED] == 0x01;
917 }
918
919 static inline bool ata_id_pio_need_iordy(const u16 *id, const u8 pio)
920 {
921 /* CF spec. r4.1 Table 22 says no IORDY on PIO5 and PIO6. */
922 if (pio > 4 && ata_id_is_cfa(id))
923 return false;
924 /* For PIO3 and higher it is mandatory. */
925 if (pio > 2)
926 return true;
927 /* Turn it on when possible. */
928 return ata_id_has_iordy(id);
929 }
930
931 static inline bool ata_drive_40wire(const u16 *dev_id)
932 {
933 if (ata_id_is_sata(dev_id))
934 return false; /* SATA */
935 if ((dev_id[ATA_ID_HW_CONFIG] & 0xE000) == 0x6000)
936 return false; /* 80 wire */
937 return true;
938 }
939
940 static inline bool ata_drive_40wire_relaxed(const u16 *dev_id)
941 {
942 if ((dev_id[ATA_ID_HW_CONFIG] & 0x2000) == 0x2000)
943 return false; /* 80 wire */
944 return true;
945 }
946
947 static inline int atapi_cdb_len(const u16 *dev_id)
948 {
949 u16 tmp = dev_id[ATA_ID_CONFIG] & 0x3;
950 switch (tmp) {
951 case 0: return 12;
952 case 1: return 16;
953 default: return -1;
954 }
955 }
956
957 static inline int atapi_command_packet_set(const u16 *dev_id)
958 {
959 return (dev_id[ATA_ID_CONFIG] >> 8) & 0x1f;
960 }
961
962 static inline bool atapi_id_dmadir(const u16 *dev_id)
963 {
964 return ata_id_major_version(dev_id) >= 7 && (dev_id[62] & 0x8000);
965 }
966
967 /*
968 * ata_id_is_lba_capacity_ok() performs a sanity check on
969 * the claimed LBA capacity value for the device.
970 *
971 * Returns 1 if LBA capacity looks sensible, 0 otherwise.
972 *
973 * It is called only once for each device.
974 */
975 static inline bool ata_id_is_lba_capacity_ok(u16 *id)
976 {
977 unsigned long lba_sects, chs_sects, head, tail;
978
979 /* No non-LBA info .. so valid! */
980 if (id[ATA_ID_CYLS] == 0)
981 return true;
982
983 lba_sects = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
984
985 /*
986 * The ATA spec tells large drives to return
987 * C/H/S = 16383/16/63 independent of their size.
988 * Some drives can be jumpered to use 15 heads instead of 16.
989 * Some drives can be jumpered to use 4092 cyls instead of 16383.
990 */
991 if ((id[ATA_ID_CYLS] == 16383 ||
992 (id[ATA_ID_CYLS] == 4092 && id[ATA_ID_CUR_CYLS] == 16383)) &&
993 id[ATA_ID_SECTORS] == 63 &&
994 (id[ATA_ID_HEADS] == 15 || id[ATA_ID_HEADS] == 16) &&
995 (lba_sects >= 16383 * 63 * id[ATA_ID_HEADS]))
996 return true;
997
998 chs_sects = id[ATA_ID_CYLS] * id[ATA_ID_HEADS] * id[ATA_ID_SECTORS];
999
1000 /* perform a rough sanity check on lba_sects: within 10% is OK */
1001 if (lba_sects - chs_sects < chs_sects/10)
1002 return true;
1003
1004 /* some drives have the word order reversed */
1005 head = (lba_sects >> 16) & 0xffff;
1006 tail = lba_sects & 0xffff;
1007 lba_sects = head | (tail << 16);
1008
1009 if (lba_sects - chs_sects < chs_sects/10) {
1010 *(__le32 *)&id[ATA_ID_LBA_CAPACITY] = __cpu_to_le32(lba_sects);
1011 return true; /* LBA capacity is (now) good */
1012 }
1013
1014 return false; /* LBA capacity value may be bad */
1015 }
1016
1017 static inline void ata_id_to_hd_driveid(u16 *id)
1018 {
1019 #ifdef __BIG_ENDIAN
1020 /* accessed in struct hd_driveid as 8-bit values */
1021 id[ATA_ID_MAX_MULTSECT] = __cpu_to_le16(id[ATA_ID_MAX_MULTSECT]);
1022 id[ATA_ID_CAPABILITY] = __cpu_to_le16(id[ATA_ID_CAPABILITY]);
1023 id[ATA_ID_OLD_PIO_MODES] = __cpu_to_le16(id[ATA_ID_OLD_PIO_MODES]);
1024 id[ATA_ID_OLD_DMA_MODES] = __cpu_to_le16(id[ATA_ID_OLD_DMA_MODES]);
1025 id[ATA_ID_MULTSECT] = __cpu_to_le16(id[ATA_ID_MULTSECT]);
1026
1027 /* as 32-bit values */
1028 *(u32 *)&id[ATA_ID_LBA_CAPACITY] = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
1029 *(u32 *)&id[ATA_ID_SPG] = ata_id_u32(id, ATA_ID_SPG);
1030
1031 /* as 64-bit value */
1032 *(u64 *)&id[ATA_ID_LBA_CAPACITY_2] =
1033 ata_id_u64(id, ATA_ID_LBA_CAPACITY_2);
1034 #endif
1035 }
1036
1037 /*
1038 * Write LBA Range Entries to the buffer that will cover the extent from
1039 * sector to sector + count. This is used for TRIM and for ADD LBA(S)
1040 * TO NV CACHE PINNED SET.
1041 */
1042 static inline unsigned ata_set_lba_range_entries(void *_buffer,
1043 unsigned buf_size, u64 sector, unsigned long count)
1044 {
1045 __le64 *buffer = _buffer;
1046 unsigned i = 0, used_bytes;
1047
1048 while (i < buf_size / 8 ) { /* 6-byte LBA + 2-byte range per entry */
1049 u64 entry = sector |
1050 ((u64)(count > 0xffff ? 0xffff : count) << 48);
1051 buffer[i++] = __cpu_to_le64(entry);
1052 if (count <= 0xffff)
1053 break;
1054 count -= 0xffff;
1055 sector += 0xffff;
1056 }
1057
1058 used_bytes = ALIGN(i * 8, 512);
1059 memset(buffer + i, 0, used_bytes - i * 8);
1060 return used_bytes;
1061 }
1062
1063 static inline int is_multi_taskfile(struct ata_taskfile *tf)
1064 {
1065 return (tf->command == ATA_CMD_READ_MULTI) ||
1066 (tf->command == ATA_CMD_WRITE_MULTI) ||
1067 (tf->command == ATA_CMD_READ_MULTI_EXT) ||
1068 (tf->command == ATA_CMD_WRITE_MULTI_EXT) ||
1069 (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT);
1070 }
1071
1072 static inline bool ata_ok(u8 status)
1073 {
1074 return ((status & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ | ATA_ERR))
1075 == ATA_DRDY);
1076 }
1077
1078 static inline bool lba_28_ok(u64 block, u32 n_block)
1079 {
1080 /* check the ending block number: must be LESS THAN 0x0fffffff */
1081 return ((block + n_block) < ((1 << 28) - 1)) && (n_block <= 256);
1082 }
1083
1084 static inline bool lba_48_ok(u64 block, u32 n_block)
1085 {
1086 /* check the ending block number */
1087 return ((block + n_block - 1) < ((u64)1 << 48)) && (n_block <= 65536);
1088 }
1089
1090 #define sata_pmp_gscr_vendor(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] & 0xffff)
1091 #define sata_pmp_gscr_devid(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] >> 16)
1092 #define sata_pmp_gscr_rev(gscr) (((gscr)[SATA_PMP_GSCR_REV] >> 8) & 0xff)
1093 #define sata_pmp_gscr_ports(gscr) ((gscr)[SATA_PMP_GSCR_PORT_INFO] & 0xf)
1094
1095 #endif /* __LINUX_ATA_H__ */
kernel source for telekom puls (alcatel/mediatek)