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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__ */ |
1096 |
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