Line data Source code
1 :
2 : /*
3 : * Copyright 2003-2004 Red Hat, Inc. All rights reserved.
4 : * Copyright 2003-2004 Jeff Garzik
5 : *
6 : *
7 : * This program is free software; you can redistribute it and/or modify
8 : * it under the terms of the GNU General Public License as published by
9 : * the Free Software Foundation; either version 2, or (at your option)
10 : * any later version.
11 : *
12 : * This program is distributed in the hope that it will be useful,
13 : * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 : * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 : * GNU General Public License for more details.
16 : *
17 : * You should have received a copy of the GNU General Public License
18 : * along with this program; see the file COPYING. If not, write to
19 : * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
20 : *
21 : *
22 : * libata documentation is available via 'make {ps|pdf}docs',
23 : * as Documentation/DocBook/libata.*
24 : *
25 : * Hardware documentation available from http://www.t13.org/
26 : *
27 : */
28 :
29 : #ifndef __LINUX_ATA_H__
30 : #define __LINUX_ATA_H__
31 :
32 : #include <linux/kernel.h>
33 : #include <linux/string.h>
34 : #include <linux/types.h>
35 : #include <asm/byteorder.h>
36 :
37 : /* defines only for the constants which don't work well as enums */
38 : #define ATA_DMA_BOUNDARY 0xffffUL
39 : #define ATA_DMA_MASK 0xffffffffULL
40 :
41 : enum {
42 : /* various global constants */
43 : ATA_MAX_DEVICES = 2, /* per bus/port */
44 : ATA_MAX_PRD = 256, /* we could make these 256/256 */
45 : ATA_SECT_SIZE = 512,
46 : ATA_MAX_SECTORS_128 = 128,
47 : ATA_MAX_SECTORS = 256,
48 : ATA_MAX_SECTORS_LBA48 = 65535,/* TODO: 65536? */
49 : ATA_MAX_SECTORS_TAPE = 65535,
50 :
51 : ATA_ID_WORDS = 256,
52 : ATA_ID_CONFIG = 0,
53 : ATA_ID_CYLS = 1,
54 : ATA_ID_HEADS = 3,
55 : ATA_ID_SECTORS = 6,
56 : ATA_ID_SERNO = 10,
57 : ATA_ID_BUF_SIZE = 21,
58 : ATA_ID_FW_REV = 23,
59 : ATA_ID_PROD = 27,
60 : ATA_ID_MAX_MULTSECT = 47,
61 : ATA_ID_DWORD_IO = 48,
62 : ATA_ID_CAPABILITY = 49,
63 : ATA_ID_OLD_PIO_MODES = 51,
64 : ATA_ID_OLD_DMA_MODES = 52,
65 : ATA_ID_FIELD_VALID = 53,
66 : ATA_ID_CUR_CYLS = 54,
67 : ATA_ID_CUR_HEADS = 55,
68 : ATA_ID_CUR_SECTORS = 56,
69 : ATA_ID_MULTSECT = 59,
70 : ATA_ID_LBA_CAPACITY = 60,
71 : ATA_ID_SWDMA_MODES = 62,
72 : ATA_ID_MWDMA_MODES = 63,
73 : ATA_ID_PIO_MODES = 64,
74 : ATA_ID_EIDE_DMA_MIN = 65,
75 : ATA_ID_EIDE_DMA_TIME = 66,
76 : ATA_ID_EIDE_PIO = 67,
77 : ATA_ID_EIDE_PIO_IORDY = 68,
78 : ATA_ID_ADDITIONAL_SUPP = 69,
79 : ATA_ID_QUEUE_DEPTH = 75,
80 : ATA_ID_MAJOR_VER = 80,
81 : ATA_ID_COMMAND_SET_1 = 82,
82 : ATA_ID_COMMAND_SET_2 = 83,
83 : ATA_ID_CFSSE = 84,
84 : ATA_ID_CFS_ENABLE_1 = 85,
85 : ATA_ID_CFS_ENABLE_2 = 86,
86 : ATA_ID_CSF_DEFAULT = 87,
87 : ATA_ID_UDMA_MODES = 88,
88 : ATA_ID_HW_CONFIG = 93,
89 : ATA_ID_SPG = 98,
90 : ATA_ID_LBA_CAPACITY_2 = 100,
91 : ATA_ID_SECTOR_SIZE = 106,
92 : ATA_ID_LAST_LUN = 126,
93 : ATA_ID_DLF = 128,
94 : ATA_ID_CSFO = 129,
95 : ATA_ID_CFA_POWER = 160,
96 : ATA_ID_CFA_KEY_MGMT = 162,
97 : ATA_ID_CFA_MODES = 163,
98 : ATA_ID_DATA_SET_MGMT = 169,
99 : ATA_ID_ROT_SPEED = 217,
100 : ATA_ID_PIO4 = (1 << 1),
101 :
102 : ATA_ID_SERNO_LEN = 20,
103 : ATA_ID_FW_REV_LEN = 8,
104 : ATA_ID_PROD_LEN = 40,
105 :
106 : ATA_PCI_CTL_OFS = 2,
107 :
108 : ATA_PIO0 = (1 << 0),
109 : ATA_PIO1 = ATA_PIO0 | (1 << 1),
110 : ATA_PIO2 = ATA_PIO1 | (1 << 2),
111 : ATA_PIO3 = ATA_PIO2 | (1 << 3),
112 : ATA_PIO4 = ATA_PIO3 | (1 << 4),
113 : ATA_PIO5 = ATA_PIO4 | (1 << 5),
114 : ATA_PIO6 = ATA_PIO5 | (1 << 6),
115 :
116 : ATA_PIO4_ONLY = (1 << 4),
117 :
118 : ATA_SWDMA0 = (1 << 0),
119 : ATA_SWDMA1 = ATA_SWDMA0 | (1 << 1),
120 : ATA_SWDMA2 = ATA_SWDMA1 | (1 << 2),
121 :
122 : ATA_SWDMA2_ONLY = (1 << 2),
123 :
124 : ATA_MWDMA0 = (1 << 0),
125 : ATA_MWDMA1 = ATA_MWDMA0 | (1 << 1),
126 : ATA_MWDMA2 = ATA_MWDMA1 | (1 << 2),
127 : ATA_MWDMA3 = ATA_MWDMA2 | (1 << 3),
128 : ATA_MWDMA4 = ATA_MWDMA3 | (1 << 4),
129 :
130 : ATA_MWDMA12_ONLY = (1 << 1) | (1 << 2),
131 : ATA_MWDMA2_ONLY = (1 << 2),
132 :
133 : ATA_UDMA0 = (1 << 0),
134 : ATA_UDMA1 = ATA_UDMA0 | (1 << 1),
135 : ATA_UDMA2 = ATA_UDMA1 | (1 << 2),
136 : ATA_UDMA3 = ATA_UDMA2 | (1 << 3),
137 : ATA_UDMA4 = ATA_UDMA3 | (1 << 4),
138 : ATA_UDMA5 = ATA_UDMA4 | (1 << 5),
139 : ATA_UDMA6 = ATA_UDMA5 | (1 << 6),
140 : ATA_UDMA7 = ATA_UDMA6 | (1 << 7),
141 : /* ATA_UDMA7 is just for completeness... doesn't exist (yet?). */
142 :
143 : ATA_UDMA24_ONLY = (1 << 2) | (1 << 4),
144 :
145 : ATA_UDMA_MASK_40C = ATA_UDMA2, /* udma0-2 */
146 :
147 : /* DMA-related */
148 : ATA_PRD_SZ = 8,
149 : ATA_PRD_TBL_SZ = (ATA_MAX_PRD * ATA_PRD_SZ),
150 : ATA_PRD_EOT = (1 << 31), /* end-of-table flag */
151 :
152 : ATA_DMA_TABLE_OFS = 4,
153 : ATA_DMA_STATUS = 2,
154 : ATA_DMA_CMD = 0,
155 : ATA_DMA_WR = (1 << 3),
156 : ATA_DMA_START = (1 << 0),
157 : ATA_DMA_INTR = (1 << 2),
158 : ATA_DMA_ERR = (1 << 1),
159 : ATA_DMA_ACTIVE = (1 << 0),
160 :
161 : /* bits in ATA command block registers */
162 : ATA_HOB = (1 << 7), /* LBA48 selector */
163 : ATA_NIEN = (1 << 1), /* disable-irq flag */
164 : ATA_LBA = (1 << 6), /* LBA28 selector */
165 : ATA_DEV1 = (1 << 4), /* Select Device 1 (slave) */
166 : ATA_DEVICE_OBS = (1 << 7) | (1 << 5), /* obs bits in dev reg */
167 : ATA_DEVCTL_OBS = (1 << 3), /* obsolete bit in devctl reg */
168 : ATA_BUSY = (1 << 7), /* BSY status bit */
169 : ATA_DRDY = (1 << 6), /* device ready */
170 : ATA_DF = (1 << 5), /* device fault */
171 : ATA_DSC = (1 << 4), /* drive seek complete */
172 : ATA_DRQ = (1 << 3), /* data request i/o */
173 : ATA_CORR = (1 << 2), /* corrected data error */
174 : ATA_IDX = (1 << 1), /* index */
175 : ATA_ERR = (1 << 0), /* have an error */
176 : ATA_SRST = (1 << 2), /* software reset */
177 : ATA_ICRC = (1 << 7), /* interface CRC error */
178 : ATA_BBK = ATA_ICRC, /* pre-EIDE: block marked bad */
179 : ATA_UNC = (1 << 6), /* uncorrectable media error */
180 : ATA_MC = (1 << 5), /* media changed */
181 : ATA_IDNF = (1 << 4), /* ID not found */
182 : ATA_MCR = (1 << 3), /* media change requested */
183 : ATA_ABORTED = (1 << 2), /* command aborted */
184 : ATA_TRK0NF = (1 << 1), /* track 0 not found */
185 : ATA_AMNF = (1 << 0), /* address mark not found */
186 : ATAPI_LFS = 0xF0, /* last failed sense */
187 : ATAPI_EOM = ATA_TRK0NF, /* end of media */
188 : ATAPI_ILI = ATA_AMNF, /* illegal length indication */
189 : ATAPI_IO = (1 << 1),
190 : ATAPI_COD = (1 << 0),
191 :
192 : /* ATA command block registers */
193 : ATA_REG_DATA = 0x00,
194 : ATA_REG_ERR = 0x01,
195 : ATA_REG_NSECT = 0x02,
196 : ATA_REG_LBAL = 0x03,
197 : ATA_REG_LBAM = 0x04,
198 : ATA_REG_LBAH = 0x05,
199 : ATA_REG_DEVICE = 0x06,
200 : ATA_REG_STATUS = 0x07,
201 :
202 : ATA_REG_FEATURE = ATA_REG_ERR, /* and their aliases */
203 : ATA_REG_CMD = ATA_REG_STATUS,
204 : ATA_REG_BYTEL = ATA_REG_LBAM,
205 : ATA_REG_BYTEH = ATA_REG_LBAH,
206 : ATA_REG_DEVSEL = ATA_REG_DEVICE,
207 : ATA_REG_IRQ = ATA_REG_NSECT,
208 :
209 : /* ATA device commands */
210 : ATA_CMD_DEV_RESET = 0x08, /* ATAPI device reset */
211 : ATA_CMD_CHK_POWER = 0xE5, /* check power mode */
212 : ATA_CMD_STANDBY = 0xE2, /* place in standby power mode */
213 : ATA_CMD_IDLE = 0xE3, /* place in idle power mode */
214 : ATA_CMD_EDD = 0x90, /* execute device diagnostic */
215 : ATA_CMD_DOWNLOAD_MICRO = 0x92,
216 : ATA_CMD_NOP = 0x00,
217 : ATA_CMD_FLUSH = 0xE7,
218 : ATA_CMD_FLUSH_EXT = 0xEA,
219 : ATA_CMD_ID_ATA = 0xEC,
220 : ATA_CMD_ID_ATAPI = 0xA1,
221 : ATA_CMD_SERVICE = 0xA2,
222 : ATA_CMD_READ = 0xC8,
223 : ATA_CMD_READ_EXT = 0x25,
224 : ATA_CMD_READ_QUEUED = 0x26,
225 : ATA_CMD_READ_STREAM_EXT = 0x2B,
226 : ATA_CMD_READ_STREAM_DMA_EXT = 0x2A,
227 : ATA_CMD_WRITE = 0xCA,
228 : ATA_CMD_WRITE_EXT = 0x35,
229 : ATA_CMD_WRITE_QUEUED = 0x36,
230 : ATA_CMD_WRITE_STREAM_EXT = 0x3B,
231 : ATA_CMD_WRITE_STREAM_DMA_EXT = 0x3A,
232 : ATA_CMD_WRITE_FUA_EXT = 0x3D,
233 : ATA_CMD_WRITE_QUEUED_FUA_EXT = 0x3E,
234 : ATA_CMD_FPDMA_READ = 0x60,
235 : ATA_CMD_FPDMA_WRITE = 0x61,
236 : ATA_CMD_PIO_READ = 0x20,
237 : ATA_CMD_PIO_READ_EXT = 0x24,
238 : ATA_CMD_PIO_WRITE = 0x30,
239 : ATA_CMD_PIO_WRITE_EXT = 0x34,
240 : ATA_CMD_READ_MULTI = 0xC4,
241 : ATA_CMD_READ_MULTI_EXT = 0x29,
242 : ATA_CMD_WRITE_MULTI = 0xC5,
243 : ATA_CMD_WRITE_MULTI_EXT = 0x39,
244 : ATA_CMD_WRITE_MULTI_FUA_EXT = 0xCE,
245 : ATA_CMD_SET_FEATURES = 0xEF,
246 : ATA_CMD_SET_MULTI = 0xC6,
247 : ATA_CMD_PACKET = 0xA0,
248 : ATA_CMD_VERIFY = 0x40,
249 : ATA_CMD_VERIFY_EXT = 0x42,
250 : ATA_CMD_WRITE_UNCORR_EXT = 0x45,
251 : ATA_CMD_STANDBYNOW1 = 0xE0,
252 : ATA_CMD_IDLEIMMEDIATE = 0xE1,
253 : ATA_CMD_SLEEP = 0xE6,
254 : ATA_CMD_INIT_DEV_PARAMS = 0x91,
255 : ATA_CMD_READ_NATIVE_MAX = 0xF8,
256 : ATA_CMD_READ_NATIVE_MAX_EXT = 0x27,
257 : ATA_CMD_SET_MAX = 0xF9,
258 : ATA_CMD_SET_MAX_EXT = 0x37,
259 : ATA_CMD_READ_LOG_EXT = 0x2F,
260 : ATA_CMD_WRITE_LOG_EXT = 0x3F,
261 : ATA_CMD_READ_LOG_DMA_EXT = 0x47,
262 : ATA_CMD_WRITE_LOG_DMA_EXT = 0x57,
263 : ATA_CMD_TRUSTED_RCV = 0x5C,
264 : ATA_CMD_TRUSTED_RCV_DMA = 0x5D,
265 : ATA_CMD_TRUSTED_SND = 0x5E,
266 : ATA_CMD_TRUSTED_SND_DMA = 0x5F,
267 : ATA_CMD_PMP_READ = 0xE4,
268 : ATA_CMD_PMP_WRITE = 0xE8,
269 : ATA_CMD_CONF_OVERLAY = 0xB1,
270 : ATA_CMD_SEC_SET_PASS = 0xF1,
271 : ATA_CMD_SEC_UNLOCK = 0xF2,
272 : ATA_CMD_SEC_ERASE_PREP = 0xF3,
273 : ATA_CMD_SEC_ERASE_UNIT = 0xF4,
274 : ATA_CMD_SEC_FREEZE_LOCK = 0xF5,
275 : ATA_CMD_SEC_DISABLE_PASS = 0xF6,
276 : ATA_CMD_CONFIG_STREAM = 0x51,
277 : ATA_CMD_SMART = 0xB0,
278 : ATA_CMD_MEDIA_LOCK = 0xDE,
279 : ATA_CMD_MEDIA_UNLOCK = 0xDF,
280 : ATA_CMD_DSM = 0x06,
281 : ATA_CMD_CHK_MED_CRD_TYP = 0xD1,
282 : ATA_CMD_CFA_REQ_EXT_ERR = 0x03,
283 : ATA_CMD_CFA_WRITE_NE = 0x38,
284 : ATA_CMD_CFA_TRANS_SECT = 0x87,
285 : ATA_CMD_CFA_ERASE = 0xC0,
286 : ATA_CMD_CFA_WRITE_MULT_NE = 0xCD,
287 : /* marked obsolete in the ATA/ATAPI-7 spec */
288 : ATA_CMD_RESTORE = 0x10,
289 :
290 : /* READ_LOG_EXT pages */
291 : ATA_LOG_SATA_NCQ = 0x10,
292 :
293 : /* READ/WRITE LONG (obsolete) */
294 : ATA_CMD_READ_LONG = 0x22,
295 : ATA_CMD_READ_LONG_ONCE = 0x23,
296 : ATA_CMD_WRITE_LONG = 0x32,
297 : ATA_CMD_WRITE_LONG_ONCE = 0x33,
298 :
299 : /* SETFEATURES stuff */
300 : SETFEATURES_XFER = 0x03,
301 : XFER_UDMA_7 = 0x47,
302 : XFER_UDMA_6 = 0x46,
303 : XFER_UDMA_5 = 0x45,
304 : XFER_UDMA_4 = 0x44,
305 : XFER_UDMA_3 = 0x43,
306 : XFER_UDMA_2 = 0x42,
307 : XFER_UDMA_1 = 0x41,
308 : XFER_UDMA_0 = 0x40,
309 : XFER_MW_DMA_4 = 0x24, /* CFA only */
310 : XFER_MW_DMA_3 = 0x23, /* CFA only */
311 : XFER_MW_DMA_2 = 0x22,
312 : XFER_MW_DMA_1 = 0x21,
313 : XFER_MW_DMA_0 = 0x20,
314 : XFER_SW_DMA_2 = 0x12,
315 : XFER_SW_DMA_1 = 0x11,
316 : XFER_SW_DMA_0 = 0x10,
317 : XFER_PIO_6 = 0x0E, /* CFA only */
318 : XFER_PIO_5 = 0x0D, /* CFA only */
319 : XFER_PIO_4 = 0x0C,
320 : XFER_PIO_3 = 0x0B,
321 : XFER_PIO_2 = 0x0A,
322 : XFER_PIO_1 = 0x09,
323 : XFER_PIO_0 = 0x08,
324 : XFER_PIO_SLOW = 0x00,
325 :
326 : SETFEATURES_WC_ON = 0x02, /* Enable write cache */
327 : SETFEATURES_WC_OFF = 0x82, /* Disable write cache */
328 :
329 : /* Enable/Disable Automatic Acoustic Management */
330 : SETFEATURES_AAM_ON = 0x42,
331 : SETFEATURES_AAM_OFF = 0xC2,
332 :
333 : SETFEATURES_SPINUP = 0x07, /* Spin-up drive */
334 :
335 : SETFEATURES_SATA_ENABLE = 0x10, /* Enable use of SATA feature */
336 : SETFEATURES_SATA_DISABLE = 0x90, /* Disable use of SATA feature */
337 :
338 : /* SETFEATURE Sector counts for SATA features */
339 : SATA_FPDMA_OFFSET = 0x01, /* FPDMA non-zero buffer offsets */
340 : SATA_FPDMA_AA = 0x02, /* FPDMA Setup FIS Auto-Activate */
341 : SATA_DIPM = 0x03, /* Device Initiated Power Management */
342 : SATA_FPDMA_IN_ORDER = 0x04, /* FPDMA in-order data delivery */
343 : SATA_AN = 0x05, /* Asynchronous Notification */
344 : SATA_SSP = 0x06, /* Software Settings Preservation */
345 :
346 : /* feature values for SET_MAX */
347 : ATA_SET_MAX_ADDR = 0x00,
348 : ATA_SET_MAX_PASSWD = 0x01,
349 : ATA_SET_MAX_LOCK = 0x02,
350 : ATA_SET_MAX_UNLOCK = 0x03,
351 : ATA_SET_MAX_FREEZE_LOCK = 0x04,
352 :
353 : /* feature values for DEVICE CONFIGURATION OVERLAY */
354 : ATA_DCO_RESTORE = 0xC0,
355 : ATA_DCO_FREEZE_LOCK = 0xC1,
356 : ATA_DCO_IDENTIFY = 0xC2,
357 : ATA_DCO_SET = 0xC3,
358 :
359 : /* feature values for SMART */
360 : ATA_SMART_ENABLE = 0xD8,
361 : ATA_SMART_READ_VALUES = 0xD0,
362 : ATA_SMART_READ_THRESHOLDS = 0xD1,
363 :
364 : /* feature values for Data Set Management */
365 : ATA_DSM_TRIM = 0x01,
366 :
367 : /* password used in LBA Mid / LBA High for executing SMART commands */
368 : ATA_SMART_LBAM_PASS = 0x4F,
369 : ATA_SMART_LBAH_PASS = 0xC2,
370 :
371 : /* ATAPI stuff */
372 : ATAPI_PKT_DMA = (1 << 0),
373 : ATAPI_DMADIR = (1 << 2), /* ATAPI data dir:
374 : 0=to device, 1=to host */
375 : ATAPI_CDB_LEN = 16,
376 :
377 : /* PMP stuff */
378 : SATA_PMP_MAX_PORTS = 15,
379 : SATA_PMP_CTRL_PORT = 15,
380 :
381 : SATA_PMP_GSCR_DWORDS = 128,
382 : SATA_PMP_GSCR_PROD_ID = 0,
383 : SATA_PMP_GSCR_REV = 1,
384 : SATA_PMP_GSCR_PORT_INFO = 2,
385 : SATA_PMP_GSCR_ERROR = 32,
386 : SATA_PMP_GSCR_ERROR_EN = 33,
387 : SATA_PMP_GSCR_FEAT = 64,
388 : SATA_PMP_GSCR_FEAT_EN = 96,
389 :
390 : SATA_PMP_PSCR_STATUS = 0,
391 : SATA_PMP_PSCR_ERROR = 1,
392 : SATA_PMP_PSCR_CONTROL = 2,
393 :
394 : SATA_PMP_FEAT_BIST = (1 << 0),
395 : SATA_PMP_FEAT_PMREQ = (1 << 1),
396 : SATA_PMP_FEAT_DYNSSC = (1 << 2),
397 : SATA_PMP_FEAT_NOTIFY = (1 << 3),
398 :
399 : /* cable types */
400 : ATA_CBL_NONE = 0,
401 : ATA_CBL_PATA40 = 1,
402 : ATA_CBL_PATA80 = 2,
403 : ATA_CBL_PATA40_SHORT = 3, /* 40 wire cable to high UDMA spec */
404 : ATA_CBL_PATA_UNK = 4, /* don't know, maybe 80c? */
405 : ATA_CBL_PATA_IGN = 5, /* don't know, ignore cable handling */
406 : ATA_CBL_SATA = 6,
407 :
408 : /* SATA Status and Control Registers */
409 : SCR_STATUS = 0,
410 : SCR_ERROR = 1,
411 : SCR_CONTROL = 2,
412 : SCR_ACTIVE = 3,
413 : SCR_NOTIFICATION = 4,
414 :
415 : /* SError bits */
416 : SERR_DATA_RECOVERED = (1 << 0), /* recovered data error */
417 : SERR_COMM_RECOVERED = (1 << 1), /* recovered comm failure */
418 : SERR_DATA = (1 << 8), /* unrecovered data error */
419 : SERR_PERSISTENT = (1 << 9), /* persistent data/comm error */
420 : SERR_PROTOCOL = (1 << 10), /* protocol violation */
421 : SERR_INTERNAL = (1 << 11), /* host internal error */
422 : SERR_PHYRDY_CHG = (1 << 16), /* PHY RDY changed */
423 : SERR_PHY_INT_ERR = (1 << 17), /* PHY internal error */
424 : SERR_COMM_WAKE = (1 << 18), /* Comm wake */
425 : SERR_10B_8B_ERR = (1 << 19), /* 10b to 8b decode error */
426 : SERR_DISPARITY = (1 << 20), /* Disparity */
427 : SERR_CRC = (1 << 21), /* CRC error */
428 : SERR_HANDSHAKE = (1 << 22), /* Handshake error */
429 : SERR_LINK_SEQ_ERR = (1 << 23), /* Link sequence error */
430 : SERR_TRANS_ST_ERROR = (1 << 24), /* Transport state trans. error */
431 : SERR_UNRECOG_FIS = (1 << 25), /* Unrecognized FIS */
432 : SERR_DEV_XCHG = (1 << 26), /* device exchanged */
433 :
434 : /* struct ata_taskfile flags */
435 : ATA_TFLAG_LBA48 = (1 << 0), /* enable 48-bit LBA and "HOB" */
436 : ATA_TFLAG_ISADDR = (1 << 1), /* enable r/w to nsect/lba regs */
437 : ATA_TFLAG_DEVICE = (1 << 2), /* enable r/w to device reg */
438 : ATA_TFLAG_WRITE = (1 << 3), /* data dir: host->dev==1 (write) */
439 : ATA_TFLAG_LBA = (1 << 4), /* enable LBA */
440 : ATA_TFLAG_FUA = (1 << 5), /* enable FUA */
441 : ATA_TFLAG_POLLING = (1 << 6), /* set nIEN to 1 and use polling */
442 :
443 : /* protocol flags */
444 : ATA_PROT_FLAG_PIO = (1 << 0), /* is PIO */
445 : ATA_PROT_FLAG_DMA = (1 << 1), /* is DMA */
446 : ATA_PROT_FLAG_DATA = ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA,
447 : ATA_PROT_FLAG_NCQ = (1 << 2), /* is NCQ */
448 : ATA_PROT_FLAG_ATAPI = (1 << 3), /* is ATAPI */
449 : };
450 :
451 : enum ata_tf_protocols {
452 : /* ATA taskfile protocols */
453 : ATA_PROT_UNKNOWN, /* unknown/invalid */
454 : ATA_PROT_NODATA, /* no data */
455 : ATA_PROT_PIO, /* PIO data xfer */
456 : ATA_PROT_DMA, /* DMA */
457 : ATA_PROT_NCQ, /* NCQ */
458 : ATAPI_PROT_NODATA, /* packet command, no data */
459 : ATAPI_PROT_PIO, /* packet command, PIO data xfer*/
460 : ATAPI_PROT_DMA, /* packet command with special DMA sauce */
461 : };
462 :
463 : enum ata_ioctls {
464 : ATA_IOC_GET_IO32 = 0x309,
465 : ATA_IOC_SET_IO32 = 0x324,
466 : };
467 :
468 : /* core structures */
469 :
470 : struct ata_prd {
471 : __le32 addr;
472 : __le32 flags_len;
473 : };
474 1 :
475 : struct ata_taskfile {
476 : unsigned long flags; /* ATA_TFLAG_xxx */
477 : u8 protocol; /* ATA_PROT_xxx */
478 :
479 : u8 ctl; /* control reg */
480 :
481 : u8 hob_feature; /* additional data */
482 : u8 hob_nsect; /* to support LBA48 */
483 : u8 hob_lbal;
484 : u8 hob_lbam;
485 : u8 hob_lbah;
486 :
487 : u8 feature;
488 : u8 nsect;
489 : u8 lbal;
490 : u8 lbam;
491 : u8 lbah;
492 :
493 : u8 device;
494 :
495 : u8 command; /* IO operation */
496 : };
497 :
498 : /*
499 : * protocol tests
500 : */
501 : static inline unsigned int ata_prot_flags(u8 prot)
502 : {
503 2 : switch (prot) {
504 8 : case ATA_PROT_NODATA:
505 2 : return 0;
506 8 : case ATA_PROT_PIO:
507 2 : return ATA_PROT_FLAG_PIO;
508 8 : case ATA_PROT_DMA:
509 2 : return ATA_PROT_FLAG_DMA;
510 8 : case ATA_PROT_NCQ:
511 2 : return ATA_PROT_FLAG_DMA | ATA_PROT_FLAG_NCQ;
512 8 : case ATAPI_PROT_NODATA:
513 2 : return ATA_PROT_FLAG_ATAPI;
514 8 : case ATAPI_PROT_PIO:
515 2 : return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_PIO;
516 8 : case ATAPI_PROT_DMA:
517 2 : return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_DMA;
518 2 : }
519 2 : return 0;
520 : }
521 :
522 : static inline int ata_is_atapi(u8 prot)
523 : {
524 8 : return ata_prot_flags(prot) & ATA_PROT_FLAG_ATAPI;
525 : }
526 :
527 : static inline int ata_is_nodata(u8 prot)
528 : {
529 : return !(ata_prot_flags(prot) & ATA_PROT_FLAG_DATA);
530 : }
531 :
532 : static inline int ata_is_pio(u8 prot)
533 : {
534 : return ata_prot_flags(prot) & ATA_PROT_FLAG_PIO;
535 : }
536 :
537 : static inline int ata_is_dma(u8 prot)
538 : {
539 : return ata_prot_flags(prot) & ATA_PROT_FLAG_DMA;
540 : }
541 :
542 : static inline int ata_is_ncq(u8 prot)
543 : {
544 : return ata_prot_flags(prot) & ATA_PROT_FLAG_NCQ;
545 : }
546 :
547 : static inline int ata_is_data(u8 prot)
548 : {
549 : return ata_prot_flags(prot) & ATA_PROT_FLAG_DATA;
550 : }
551 :
552 : /*
553 : * id tests
554 : */
555 : #define ata_id_is_ata(id) (((id)[ATA_ID_CONFIG] & (1 << 15)) == 0)
556 : #define ata_id_has_lba(id) ((id)[ATA_ID_CAPABILITY] & (1 << 9))
557 : #define ata_id_has_dma(id) ((id)[ATA_ID_CAPABILITY] & (1 << 8))
558 : #define ata_id_has_ncq(id) ((id)[76] & (1 << 8))
559 : #define ata_id_queue_depth(id) (((id)[ATA_ID_QUEUE_DEPTH] & 0x1f) + 1)
560 : #define ata_id_removeable(id) ((id)[ATA_ID_CONFIG] & (1 << 7))
561 : #define ata_id_has_atapi_AN(id) \
562 : ( (((id)[76] != 0x0000) && ((id)[76] != 0xffff)) && \
563 : ((id)[78] & (1 << 5)) )
564 : #define ata_id_has_fpdma_aa(id) \
565 : ( (((id)[76] != 0x0000) && ((id)[76] != 0xffff)) && \
566 : ((id)[78] & (1 << 2)) )
567 : #define ata_id_iordy_disable(id) ((id)[ATA_ID_CAPABILITY] & (1 << 10))
568 : #define ata_id_has_iordy(id) ((id)[ATA_ID_CAPABILITY] & (1 << 11))
569 : #define ata_id_u32(id,n) \
570 : (((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)]))
571 : #define ata_id_u64(id,n) \
572 : ( ((u64) (id)[(n) + 3] << 48) | \
573 : ((u64) (id)[(n) + 2] << 32) | \
574 : ((u64) (id)[(n) + 1] << 16) | \
575 : ((u64) (id)[(n) + 0]) )
576 :
577 : #define ata_id_cdb_intr(id) (((id)[ATA_ID_CONFIG] & 0x60) == 0x20)
578 :
579 : static inline bool ata_id_has_hipm(const u16 *id)
580 : {
581 : u16 val = id[76];
582 :
583 : if (val == 0 || val == 0xffff)
584 : return false;
585 :
586 : return val & (1 << 9);
587 : }
588 :
589 : static inline bool ata_id_has_dipm(const u16 *id)
590 : {
591 : u16 val = id[78];
592 :
593 : if (val == 0 || val == 0xffff)
594 : return false;
595 :
596 : return val & (1 << 3);
597 : }
598 :
599 :
600 : static inline int ata_id_has_fua(const u16 *id)
601 : {
602 : if ((id[ATA_ID_CFSSE] & 0xC000) != 0x4000)
603 : return 0;
604 : return id[ATA_ID_CFSSE] & (1 << 6);
605 : }
606 :
607 : static inline int ata_id_has_flush(const u16 *id)
608 : {
609 : if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
610 : return 0;
611 : return id[ATA_ID_COMMAND_SET_2] & (1 << 12);
612 : }
613 :
614 : static inline int ata_id_flush_enabled(const u16 *id)
615 : {
616 : if (ata_id_has_flush(id) == 0)
617 : return 0;
618 : if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
619 : return 0;
620 : return id[ATA_ID_CFS_ENABLE_2] & (1 << 12);
621 : }
622 :
623 : static inline int ata_id_has_flush_ext(const u16 *id)
624 : {
625 : if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
626 : return 0;
627 : return id[ATA_ID_COMMAND_SET_2] & (1 << 13);
628 : }
629 :
630 : static inline int ata_id_flush_ext_enabled(const u16 *id)
631 : {
632 : if (ata_id_has_flush_ext(id) == 0)
633 : return 0;
634 : if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
635 : return 0;
636 : /*
637 : * some Maxtor disks have bit 13 defined incorrectly
638 : * so check bit 10 too
639 : */
640 : return (id[ATA_ID_CFS_ENABLE_2] & 0x2400) == 0x2400;
641 : }
642 :
643 : static inline int ata_id_has_large_logical_sectors(const u16 *id)
644 : {
645 : if ((id[ATA_ID_SECTOR_SIZE] & 0xc000) != 0x4000)
646 : return 0;
647 : return id[ATA_ID_SECTOR_SIZE] & (1 << 13);
648 : }
649 :
650 : static inline u16 ata_id_logical_per_physical_sectors(const u16 *id)
651 : {
652 : return 1 << (id[ATA_ID_SECTOR_SIZE] & 0xf);
653 : }
654 :
655 : static inline int ata_id_has_lba48(const u16 *id)
656 : {
657 : if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
658 : return 0;
659 : if (!ata_id_u64(id, ATA_ID_LBA_CAPACITY_2))
660 : return 0;
661 : return id[ATA_ID_COMMAND_SET_2] & (1 << 10);
662 : }
663 :
664 : static inline int ata_id_lba48_enabled(const u16 *id)
665 : {
666 : if (ata_id_has_lba48(id) == 0)
667 : return 0;
668 : if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
669 : return 0;
670 : return id[ATA_ID_CFS_ENABLE_2] & (1 << 10);
671 : }
672 :
673 : static inline int ata_id_hpa_enabled(const u16 *id)
674 : {
675 : /* Yes children, word 83 valid bits cover word 82 data */
676 : if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
677 : return 0;
678 : /* And 87 covers 85-87 */
679 : if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
680 : return 0;
681 : /* Check command sets enabled as well as supported */
682 : if ((id[ATA_ID_CFS_ENABLE_1] & (1 << 10)) == 0)
683 : return 0;
684 : return id[ATA_ID_COMMAND_SET_1] & (1 << 10);
685 : }
686 :
687 : static inline int ata_id_has_wcache(const u16 *id)
688 : {
689 : /* Yes children, word 83 valid bits cover word 82 data */
690 : if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
691 : return 0;
692 : return id[ATA_ID_COMMAND_SET_1] & (1 << 5);
693 : }
694 :
695 : static inline int ata_id_has_pm(const u16 *id)
696 : {
697 : if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
698 : return 0;
699 : return id[ATA_ID_COMMAND_SET_1] & (1 << 3);
700 : }
701 :
702 : static inline int ata_id_rahead_enabled(const u16 *id)
703 : {
704 : if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
705 : return 0;
706 : return id[ATA_ID_CFS_ENABLE_1] & (1 << 6);
707 : }
708 :
709 : static inline int ata_id_wcache_enabled(const u16 *id)
710 : {
711 : if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
712 : return 0;
713 : return id[ATA_ID_CFS_ENABLE_1] & (1 << 5);
714 : }
715 :
716 : /**
717 : * ata_id_major_version - get ATA level of drive
718 : * @id: Identify data
719 : *
720 : * Caveats:
721 : * ATA-1 considers identify optional
722 : * ATA-2 introduces mandatory identify
723 : * ATA-3 introduces word 80 and accurate reporting
724 : *
725 : * The practical impact of this is that ata_id_major_version cannot
726 : * reliably report on drives below ATA3.
727 : */
728 :
729 : static inline unsigned int ata_id_major_version(const u16 *id)
730 : {
731 : unsigned int mver;
732 :
733 : if (id[ATA_ID_MAJOR_VER] == 0xFFFF)
734 : return 0;
735 :
736 : for (mver = 14; mver >= 1; mver--)
737 : if (id[ATA_ID_MAJOR_VER] & (1 << mver))
738 : break;
739 : return mver;
740 : }
741 :
742 : static inline int ata_id_is_sata(const u16 *id)
743 : {
744 : /*
745 : * See if word 93 is 0 AND drive is at least ATA-5 compatible
746 : * verifying that word 80 by casting it to a signed type --
747 : * this trick allows us to filter out the reserved values of
748 : * 0x0000 and 0xffff along with the earlier ATA revisions...
749 : */
750 : if (id[ATA_ID_HW_CONFIG] == 0 && (short)id[ATA_ID_MAJOR_VER] >= 0x0020)
751 : return 1;
752 : return 0;
753 : }
754 :
755 : static inline int ata_id_has_tpm(const u16 *id)
756 : {
757 : /* The TPM bits are only valid on ATA8 */
758 : if (ata_id_major_version(id) < 8)
759 : return 0;
760 : if ((id[48] & 0xC000) != 0x4000)
761 : return 0;
762 : return id[48] & (1 << 0);
763 : }
764 :
765 : static inline int ata_id_has_dword_io(const u16 *id)
766 : {
767 : /* ATA 8 reuses this flag for "trusted" computing */
768 : if (ata_id_major_version(id) > 7)
769 : return 0;
770 : if (id[ATA_ID_DWORD_IO] & (1 << 0))
771 : return 1;
772 : return 0;
773 : }
774 :
775 : static inline int ata_id_has_unload(const u16 *id)
776 : {
777 : if (ata_id_major_version(id) >= 7 &&
778 : (id[ATA_ID_CFSSE] & 0xC000) == 0x4000 &&
779 : id[ATA_ID_CFSSE] & (1 << 13))
780 : return 1;
781 : return 0;
782 : }
783 :
784 : static inline int ata_id_form_factor(const u16 *id)
785 : {
786 : u16 val = id[168];
787 :
788 : if (ata_id_major_version(id) < 7 || val == 0 || val == 0xffff)
789 : return 0;
790 :
791 : val &= 0xf;
792 :
793 : if (val > 5)
794 : return 0;
795 :
796 : return val;
797 : }
798 :
799 : static inline int ata_id_rotation_rate(const u16 *id)
800 : {
801 : u16 val = id[217];
802 :
803 : if (ata_id_major_version(id) < 7 || val == 0 || val == 0xffff)
804 : return 0;
805 :
806 : if (val > 1 && val < 0x401)
807 : return 0;
808 :
809 : return val;
810 : }
811 :
812 : static inline int ata_id_has_trim(const u16 *id)
813 : {
814 : if (ata_id_major_version(id) >= 7 &&
815 : (id[ATA_ID_DATA_SET_MGMT] & 1))
816 : return 1;
817 : return 0;
818 : }
819 :
820 : static inline int ata_id_has_zero_after_trim(const u16 *id)
821 : {
822 : /* DSM supported, deterministic read, and read zero after trim set */
823 : if (ata_id_has_trim(id) &&
824 : (id[ATA_ID_ADDITIONAL_SUPP] & 0x4020) == 0x4020)
825 : return 1;
826 :
827 : return 0;
828 : }
829 :
830 : static inline int ata_id_current_chs_valid(const u16 *id)
831 : {
832 : /* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command
833 : has not been issued to the device then the values of
834 : id[ATA_ID_CUR_CYLS] to id[ATA_ID_CUR_SECTORS] are vendor specific. */
835 : return (id[ATA_ID_FIELD_VALID] & 1) && /* Current translation valid */
836 : id[ATA_ID_CUR_CYLS] && /* cylinders in current translation */
837 : id[ATA_ID_CUR_HEADS] && /* heads in current translation */
838 : id[ATA_ID_CUR_HEADS] <= 16 &&
839 : id[ATA_ID_CUR_SECTORS]; /* sectors in current translation */
840 : }
841 :
842 : static inline int ata_id_is_cfa(const u16 *id)
843 : {
844 : if (id[ATA_ID_CONFIG] == 0x848A) /* Traditional CF */
845 : return 1;
846 : /*
847 : * CF specs don't require specific value in the word 0 anymore and yet
848 : * they forbid to report the ATA version in the word 80 and require the
849 : * CFA feature set support to be indicated in the word 83 in this case.
850 : * Unfortunately, some cards only follow either of this requirements,
851 : * and while those that don't indicate CFA feature support need some
852 : * sort of quirk list, it seems impractical for the ones that do...
853 : */
854 : if ((id[ATA_ID_COMMAND_SET_2] & 0xC004) == 0x4004)
855 : return 1;
856 : return 0;
857 : }
858 :
859 : static inline int ata_id_is_ssd(const u16 *id)
860 : {
861 : return id[ATA_ID_ROT_SPEED] == 0x01;
862 : }
863 :
864 : static inline int ata_id_pio_need_iordy(const u16 *id, const u8 pio)
865 : {
866 : /* CF spec. r4.1 Table 22 says no IORDY on PIO5 and PIO6. */
867 : if (pio > 4 && ata_id_is_cfa(id))
868 : return 0;
869 : /* For PIO3 and higher it is mandatory. */
870 : if (pio > 2)
871 : return 1;
872 : /* Turn it on when possible. */
873 : if (ata_id_has_iordy(id))
874 : return 1;
875 : return 0;
876 : }
877 :
878 : static inline int ata_drive_40wire(const u16 *dev_id)
879 : {
880 : if (ata_id_is_sata(dev_id))
881 : return 0; /* SATA */
882 : if ((dev_id[ATA_ID_HW_CONFIG] & 0xE000) == 0x6000)
883 : return 0; /* 80 wire */
884 : return 1;
885 : }
886 :
887 : static inline int ata_drive_40wire_relaxed(const u16 *dev_id)
888 : {
889 : if ((dev_id[ATA_ID_HW_CONFIG] & 0x2000) == 0x2000)
890 : return 0; /* 80 wire */
891 : return 1;
892 : }
893 :
894 : static inline int atapi_cdb_len(const u16 *dev_id)
895 : {
896 : u16 tmp = dev_id[ATA_ID_CONFIG] & 0x3;
897 : switch (tmp) {
898 : case 0: return 12;
899 : case 1: return 16;
900 : default: return -1;
901 : }
902 : }
903 :
904 : static inline int atapi_command_packet_set(const u16 *dev_id)
905 : {
906 : return (dev_id[ATA_ID_CONFIG] >> 8) & 0x1f;
907 : }
908 :
909 : static inline int atapi_id_dmadir(const u16 *dev_id)
910 : {
911 : return ata_id_major_version(dev_id) >= 7 && (dev_id[62] & 0x8000);
912 : }
913 :
914 : /*
915 : * ata_id_is_lba_capacity_ok() performs a sanity check on
916 : * the claimed LBA capacity value for the device.
917 : *
918 : * Returns 1 if LBA capacity looks sensible, 0 otherwise.
919 : *
920 : * It is called only once for each device.
921 : */
922 : static inline int ata_id_is_lba_capacity_ok(u16 *id)
923 : {
924 : unsigned long lba_sects, chs_sects, head, tail;
925 :
926 : /* No non-LBA info .. so valid! */
927 : if (id[ATA_ID_CYLS] == 0)
928 : return 1;
929 :
930 : lba_sects = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
931 :
932 : /*
933 : * The ATA spec tells large drives to return
934 : * C/H/S = 16383/16/63 independent of their size.
935 : * Some drives can be jumpered to use 15 heads instead of 16.
936 : * Some drives can be jumpered to use 4092 cyls instead of 16383.
937 : */
938 : if ((id[ATA_ID_CYLS] == 16383 ||
939 : (id[ATA_ID_CYLS] == 4092 && id[ATA_ID_CUR_CYLS] == 16383)) &&
940 : id[ATA_ID_SECTORS] == 63 &&
941 : (id[ATA_ID_HEADS] == 15 || id[ATA_ID_HEADS] == 16) &&
942 : (lba_sects >= 16383 * 63 * id[ATA_ID_HEADS]))
943 : return 1;
944 :
945 : chs_sects = id[ATA_ID_CYLS] * id[ATA_ID_HEADS] * id[ATA_ID_SECTORS];
946 :
947 : /* perform a rough sanity check on lba_sects: within 10% is OK */
948 : if (lba_sects - chs_sects < chs_sects/10)
949 : return 1;
950 :
951 : /* some drives have the word order reversed */
952 : head = (lba_sects >> 16) & 0xffff;
953 : tail = lba_sects & 0xffff;
954 : lba_sects = head | (tail << 16);
955 :
956 : if (lba_sects - chs_sects < chs_sects/10) {
957 : *(__le32 *)&id[ATA_ID_LBA_CAPACITY] = __cpu_to_le32(lba_sects);
958 : return 1; /* LBA capacity is (now) good */
959 : }
960 :
961 : return 0; /* LBA capacity value may be bad */
962 : }
963 :
964 : static inline void ata_id_to_hd_driveid(u16 *id)
965 : {
966 : #ifdef __BIG_ENDIAN
967 : /* accessed in struct hd_driveid as 8-bit values */
968 : id[ATA_ID_MAX_MULTSECT] = __cpu_to_le16(id[ATA_ID_MAX_MULTSECT]);
969 : id[ATA_ID_CAPABILITY] = __cpu_to_le16(id[ATA_ID_CAPABILITY]);
970 : id[ATA_ID_OLD_PIO_MODES] = __cpu_to_le16(id[ATA_ID_OLD_PIO_MODES]);
971 : id[ATA_ID_OLD_DMA_MODES] = __cpu_to_le16(id[ATA_ID_OLD_DMA_MODES]);
972 : id[ATA_ID_MULTSECT] = __cpu_to_le16(id[ATA_ID_MULTSECT]);
973 :
974 : /* as 32-bit values */
975 : *(u32 *)&id[ATA_ID_LBA_CAPACITY] = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
976 : *(u32 *)&id[ATA_ID_SPG] = ata_id_u32(id, ATA_ID_SPG);
977 :
978 : /* as 64-bit value */
979 : *(u64 *)&id[ATA_ID_LBA_CAPACITY_2] =
980 : ata_id_u64(id, ATA_ID_LBA_CAPACITY_2);
981 : #endif
982 : }
983 :
984 : /*
985 : * Write LBA Range Entries to the buffer that will cover the extent from
986 : * sector to sector + count. This is used for TRIM and for ADD LBA(S)
987 : * TO NV CACHE PINNED SET.
988 : */
989 : static inline unsigned ata_set_lba_range_entries(void *_buffer,
990 : unsigned buf_size, u64 sector, unsigned long count)
991 : {
992 : __le64 *buffer = _buffer;
993 : unsigned i = 0, used_bytes;
994 :
995 : while (i < buf_size / 8 ) { /* 6-byte LBA + 2-byte range per entry */
996 : u64 entry = sector |
997 : ((u64)(count > 0xffff ? 0xffff : count) << 48);
998 : buffer[i++] = __cpu_to_le64(entry);
999 : if (count <= 0xffff)
1000 : break;
1001 : count -= 0xffff;
1002 : sector += 0xffff;
1003 : }
1004 :
1005 : used_bytes = ALIGN(i * 8, 512);
1006 : memset(buffer + i, 0, used_bytes - i * 8);
1007 : return used_bytes;
1008 : }
1009 :
1010 : static inline int is_multi_taskfile(struct ata_taskfile *tf)
1011 : {
1012 : return (tf->command == ATA_CMD_READ_MULTI) ||
1013 : (tf->command == ATA_CMD_WRITE_MULTI) ||
1014 : (tf->command == ATA_CMD_READ_MULTI_EXT) ||
1015 : (tf->command == ATA_CMD_WRITE_MULTI_EXT) ||
1016 : (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT);
1017 : }
1018 :
1019 : static inline int ata_ok(u8 status)
1020 : {
1021 : return ((status & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ | ATA_ERR))
1022 : == ATA_DRDY);
1023 : }
1024 :
1025 : static inline int lba_28_ok(u64 block, u32 n_block)
1026 : {
1027 : /* check the ending block number: must be LESS THAN 0x0fffffff */
1028 : return ((block + n_block) < ((1 << 28) - 1)) && (n_block <= 256);
1029 : }
1030 :
1031 : static inline int lba_48_ok(u64 block, u32 n_block)
1032 : {
1033 : /* check the ending block number */
1034 : return ((block + n_block - 1) < ((u64)1 << 48)) && (n_block <= 65536);
1035 : }
1036 :
1037 : #define sata_pmp_gscr_vendor(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] & 0xffff)
1038 : #define sata_pmp_gscr_devid(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] >> 16)
1039 : #define sata_pmp_gscr_rev(gscr) (((gscr)[SATA_PMP_GSCR_REV] >> 8) & 0xff)
1040 : #define sata_pmp_gscr_ports(gscr) ((gscr)[SATA_PMP_GSCR_PORT_INFO] & 0xf)
1041 :
1042 : #endif /* __LINUX_ATA_H__ */
|