3 * Copyright 2003-2004 Red Hat, Inc. All rights reserved.
4 * Copyright 2003-2004 Jeff Garzik
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)
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.
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.
22 * libata documentation is available via 'make {ps|pdf}docs',
23 * as Documentation/DocBook/libata.*
25 * Hardware documentation available from http://www.t13.org/
29 #ifndef __LINUX_ATA_H__
30 #define __LINUX_ATA_H__
32 #include <linux/types.h>
34 /* defines only for the constants which don't work well as enums */
35 #define ATA_DMA_BOUNDARY 0xffffUL
36 #define ATA_DMA_MASK 0xffffffffULL
39 /* various global constants */
40 ATA_MAX_DEVICES = 2, /* per bus/port */
41 ATA_MAX_PRD = 256, /* we could make these 256/256 */
43 ATA_MAX_SECTORS_128 = 128,
44 ATA_MAX_SECTORS = 256,
45 ATA_MAX_SECTORS_LBA48 = 65535,/* TODO: 65536? */
46 ATA_MAX_SECTORS_TAPE = 65535,
57 ATA_ID_MAX_MULTSECT = 47,
59 ATA_ID_CAPABILITY = 49,
60 ATA_ID_OLD_PIO_MODES = 51,
61 ATA_ID_OLD_DMA_MODES = 52,
62 ATA_ID_FIELD_VALID = 53,
64 ATA_ID_CUR_HEADS = 55,
65 ATA_ID_CUR_SECTORS = 56,
67 ATA_ID_LBA_CAPACITY = 60,
68 ATA_ID_SWDMA_MODES = 62,
69 ATA_ID_MWDMA_MODES = 63,
70 ATA_ID_PIO_MODES = 64,
71 ATA_ID_EIDE_DMA_MIN = 65,
72 ATA_ID_EIDE_DMA_TIME = 66,
74 ATA_ID_EIDE_PIO_IORDY = 68,
75 ATA_ID_QUEUE_DEPTH = 75,
76 ATA_ID_MAJOR_VER = 80,
77 ATA_ID_COMMAND_SET_1 = 82,
78 ATA_ID_COMMAND_SET_2 = 83,
80 ATA_ID_CFS_ENABLE_1 = 85,
81 ATA_ID_CFS_ENABLE_2 = 86,
82 ATA_ID_CSF_DEFAULT = 87,
83 ATA_ID_UDMA_MODES = 88,
84 ATA_ID_HW_CONFIG = 93,
86 ATA_ID_LBA_CAPACITY_2 = 100,
87 ATA_ID_LAST_LUN = 126,
90 ATA_ID_CFA_POWER = 160,
91 ATA_ID_PIO4 = (1 << 1),
93 ATA_ID_SERNO_LEN = 20,
94 ATA_ID_FW_REV_LEN = 8,
100 ATA_PIO1 = ATA_PIO0 | (1 << 1),
101 ATA_PIO2 = ATA_PIO1 | (1 << 2),
102 ATA_PIO3 = ATA_PIO2 | (1 << 3),
103 ATA_PIO4 = ATA_PIO3 | (1 << 4),
104 ATA_PIO5 = ATA_PIO4 | (1 << 5),
105 ATA_PIO6 = ATA_PIO5 | (1 << 6),
107 ATA_SWDMA0 = (1 << 0),
108 ATA_SWDMA1 = ATA_SWDMA0 | (1 << 1),
109 ATA_SWDMA2 = ATA_SWDMA1 | (1 << 2),
111 ATA_SWDMA2_ONLY = (1 << 2),
113 ATA_MWDMA0 = (1 << 0),
114 ATA_MWDMA1 = ATA_MWDMA0 | (1 << 1),
115 ATA_MWDMA2 = ATA_MWDMA1 | (1 << 2),
117 ATA_MWDMA12_ONLY = (1 << 1) | (1 << 2),
118 ATA_MWDMA2_ONLY = (1 << 2),
120 ATA_UDMA0 = (1 << 0),
121 ATA_UDMA1 = ATA_UDMA0 | (1 << 1),
122 ATA_UDMA2 = ATA_UDMA1 | (1 << 2),
123 ATA_UDMA3 = ATA_UDMA2 | (1 << 3),
124 ATA_UDMA4 = ATA_UDMA3 | (1 << 4),
125 ATA_UDMA5 = ATA_UDMA4 | (1 << 5),
126 ATA_UDMA6 = ATA_UDMA5 | (1 << 6),
127 ATA_UDMA7 = ATA_UDMA6 | (1 << 7),
128 /* ATA_UDMA7 is just for completeness... doesn't exist (yet?). */
130 ATA_UDMA_MASK_40C = ATA_UDMA2, /* udma0-2 */
134 ATA_PRD_TBL_SZ = (ATA_MAX_PRD * ATA_PRD_SZ),
135 ATA_PRD_EOT = (1 << 31), /* end-of-table flag */
137 ATA_DMA_TABLE_OFS = 4,
140 ATA_DMA_WR = (1 << 3),
141 ATA_DMA_START = (1 << 0),
142 ATA_DMA_INTR = (1 << 2),
143 ATA_DMA_ERR = (1 << 1),
144 ATA_DMA_ACTIVE = (1 << 0),
146 /* bits in ATA command block registers */
147 ATA_HOB = (1 << 7), /* LBA48 selector */
148 ATA_NIEN = (1 << 1), /* disable-irq flag */
149 ATA_LBA = (1 << 6), /* LBA28 selector */
150 ATA_DEV1 = (1 << 4), /* Select Device 1 (slave) */
151 ATA_DEVICE_OBS = (1 << 7) | (1 << 5), /* obs bits in dev reg */
152 ATA_DEVCTL_OBS = (1 << 3), /* obsolete bit in devctl reg */
153 ATA_BUSY = (1 << 7), /* BSY status bit */
154 ATA_DRDY = (1 << 6), /* device ready */
155 ATA_DF = (1 << 5), /* device fault */
156 ATA_DSC = (1 << 4), /* drive seek complete */
157 ATA_DRQ = (1 << 3), /* data request i/o */
158 ATA_CORR = (1 << 2), /* corrected data error */
159 ATA_IDX = (1 << 1), /* index */
160 ATA_ERR = (1 << 0), /* have an error */
161 ATA_SRST = (1 << 2), /* software reset */
162 ATA_ICRC = (1 << 7), /* interface CRC error */
163 ATA_BBK = ATA_ICRC, /* pre-EIDE: block marked bad */
164 ATA_UNC = (1 << 6), /* uncorrectable media error */
165 ATA_MC = (1 << 5), /* media changed */
166 ATA_IDNF = (1 << 4), /* ID not found */
167 ATA_MCR = (1 << 3), /* media change requested */
168 ATA_ABORTED = (1 << 2), /* command aborted */
169 ATA_TRK0NF = (1 << 1), /* track 0 not found */
170 ATA_AMNF = (1 << 0), /* address mark not found */
171 ATAPI_LFS = 0xF0, /* last failed sense */
172 ATAPI_EOM = ATA_TRK0NF, /* end of media */
173 ATAPI_ILI = ATA_AMNF, /* illegal length indication */
175 ATAPI_COD = (1 << 0),
177 /* ATA command block registers */
180 ATA_REG_NSECT = 0x02,
184 ATA_REG_DEVICE = 0x06,
185 ATA_REG_STATUS = 0x07,
187 ATA_REG_FEATURE = ATA_REG_ERR, /* and their aliases */
188 ATA_REG_CMD = ATA_REG_STATUS,
189 ATA_REG_BYTEL = ATA_REG_LBAM,
190 ATA_REG_BYTEH = ATA_REG_LBAH,
191 ATA_REG_DEVSEL = ATA_REG_DEVICE,
192 ATA_REG_IRQ = ATA_REG_NSECT,
194 /* ATA device commands */
195 ATA_CMD_DEV_RESET = 0x08, /* ATAPI device reset */
196 ATA_CMD_CHK_POWER = 0xE5, /* check power mode */
197 ATA_CMD_STANDBY = 0xE2, /* place in standby power mode */
198 ATA_CMD_IDLE = 0xE3, /* place in idle power mode */
199 ATA_CMD_EDD = 0x90, /* execute device diagnostic */
200 ATA_CMD_FLUSH = 0xE7,
201 ATA_CMD_FLUSH_EXT = 0xEA,
202 ATA_CMD_ID_ATA = 0xEC,
203 ATA_CMD_ID_ATAPI = 0xA1,
205 ATA_CMD_READ_EXT = 0x25,
206 ATA_CMD_WRITE = 0xCA,
207 ATA_CMD_WRITE_EXT = 0x35,
208 ATA_CMD_WRITE_FUA_EXT = 0x3D,
209 ATA_CMD_FPDMA_READ = 0x60,
210 ATA_CMD_FPDMA_WRITE = 0x61,
211 ATA_CMD_PIO_READ = 0x20,
212 ATA_CMD_PIO_READ_EXT = 0x24,
213 ATA_CMD_PIO_WRITE = 0x30,
214 ATA_CMD_PIO_WRITE_EXT = 0x34,
215 ATA_CMD_READ_MULTI = 0xC4,
216 ATA_CMD_READ_MULTI_EXT = 0x29,
217 ATA_CMD_WRITE_MULTI = 0xC5,
218 ATA_CMD_WRITE_MULTI_EXT = 0x39,
219 ATA_CMD_WRITE_MULTI_FUA_EXT = 0xCE,
220 ATA_CMD_SET_FEATURES = 0xEF,
221 ATA_CMD_SET_MULTI = 0xC6,
222 ATA_CMD_PACKET = 0xA0,
223 ATA_CMD_VERIFY = 0x40,
224 ATA_CMD_VERIFY_EXT = 0x42,
225 ATA_CMD_STANDBYNOW1 = 0xE0,
226 ATA_CMD_IDLEIMMEDIATE = 0xE1,
227 ATA_CMD_SLEEP = 0xE6,
228 ATA_CMD_INIT_DEV_PARAMS = 0x91,
229 ATA_CMD_READ_NATIVE_MAX = 0xF8,
230 ATA_CMD_READ_NATIVE_MAX_EXT = 0x27,
231 ATA_CMD_SET_MAX = 0xF9,
232 ATA_CMD_SET_MAX_EXT = 0x37,
233 ATA_CMD_READ_LOG_EXT = 0x2f,
234 ATA_CMD_PMP_READ = 0xE4,
235 ATA_CMD_PMP_WRITE = 0xE8,
236 ATA_CMD_CONF_OVERLAY = 0xB1,
237 ATA_CMD_SEC_FREEZE_LOCK = 0xF5,
238 ATA_CMD_SMART = 0xB0,
239 ATA_CMD_MEDIA_LOCK = 0xDE,
240 ATA_CMD_MEDIA_UNLOCK = 0xDF,
241 /* marked obsolete in the ATA/ATAPI-7 spec */
242 ATA_CMD_RESTORE = 0x10,
243 /* EXABYTE specific */
244 ATA_EXABYTE_ENABLE_NEST = 0xF0,
246 /* READ_LOG_EXT pages */
247 ATA_LOG_SATA_NCQ = 0x10,
249 /* READ/WRITE LONG (obsolete) */
250 ATA_CMD_READ_LONG = 0x22,
251 ATA_CMD_READ_LONG_ONCE = 0x23,
252 ATA_CMD_WRITE_LONG = 0x32,
253 ATA_CMD_WRITE_LONG_ONCE = 0x33,
255 /* SETFEATURES stuff */
256 SETFEATURES_XFER = 0x03,
265 XFER_MW_DMA_4 = 0x24, /* CFA only */
266 XFER_MW_DMA_3 = 0x23, /* CFA only */
267 XFER_MW_DMA_2 = 0x22,
268 XFER_MW_DMA_1 = 0x21,
269 XFER_MW_DMA_0 = 0x20,
270 XFER_SW_DMA_2 = 0x12,
271 XFER_SW_DMA_1 = 0x11,
272 XFER_SW_DMA_0 = 0x10,
273 XFER_PIO_6 = 0x0E, /* CFA only */
274 XFER_PIO_5 = 0x0D, /* CFA only */
280 XFER_PIO_SLOW = 0x00,
282 SETFEATURES_WC_ON = 0x02, /* Enable write cache */
283 SETFEATURES_WC_OFF = 0x82, /* Disable write cache */
285 /* Enable/Disable Automatic Acoustic Management */
286 SETFEATURES_AAM_ON = 0x42,
287 SETFEATURES_AAM_OFF = 0xC2,
289 SETFEATURES_SPINUP = 0x07, /* Spin-up drive */
291 SETFEATURES_SATA_ENABLE = 0x10, /* Enable use of SATA feature */
292 SETFEATURES_SATA_DISABLE = 0x90, /* Disable use of SATA feature */
294 /* SETFEATURE Sector counts for SATA features */
295 SATA_AN = 0x05, /* Asynchronous Notification */
296 SATA_DIPM = 0x03, /* Device Initiated Power Management */
298 /* feature values for SET_MAX */
299 ATA_SET_MAX_ADDR = 0x00,
300 ATA_SET_MAX_PASSWD = 0x01,
301 ATA_SET_MAX_LOCK = 0x02,
302 ATA_SET_MAX_UNLOCK = 0x03,
303 ATA_SET_MAX_FREEZE_LOCK = 0x04,
305 /* feature values for DEVICE CONFIGURATION OVERLAY */
306 ATA_DCO_RESTORE = 0xC0,
307 ATA_DCO_FREEZE_LOCK = 0xC1,
308 ATA_DCO_IDENTIFY = 0xC2,
311 /* feature values for SMART */
312 ATA_SMART_ENABLE = 0xD8,
313 ATA_SMART_READ_VALUES = 0xD0,
314 ATA_SMART_READ_THRESHOLDS = 0xD1,
316 /* password used in LBA Mid / LBA High for executing SMART commands */
317 ATA_SMART_LBAM_PASS = 0x4F,
318 ATA_SMART_LBAH_PASS = 0xC2,
321 ATAPI_PKT_DMA = (1 << 0),
322 ATAPI_DMADIR = (1 << 2), /* ATAPI data dir:
323 0=to device, 1=to host */
327 SATA_PMP_MAX_PORTS = 15,
328 SATA_PMP_CTRL_PORT = 15,
330 SATA_PMP_GSCR_DWORDS = 128,
331 SATA_PMP_GSCR_PROD_ID = 0,
332 SATA_PMP_GSCR_REV = 1,
333 SATA_PMP_GSCR_PORT_INFO = 2,
334 SATA_PMP_GSCR_ERROR = 32,
335 SATA_PMP_GSCR_ERROR_EN = 33,
336 SATA_PMP_GSCR_FEAT = 64,
337 SATA_PMP_GSCR_FEAT_EN = 96,
339 SATA_PMP_PSCR_STATUS = 0,
340 SATA_PMP_PSCR_ERROR = 1,
341 SATA_PMP_PSCR_CONTROL = 2,
343 SATA_PMP_FEAT_BIST = (1 << 0),
344 SATA_PMP_FEAT_PMREQ = (1 << 1),
345 SATA_PMP_FEAT_DYNSSC = (1 << 2),
346 SATA_PMP_FEAT_NOTIFY = (1 << 3),
352 ATA_CBL_PATA40_SHORT = 3, /* 40 wire cable to high UDMA spec */
353 ATA_CBL_PATA_UNK = 4, /* don't know, maybe 80c? */
354 ATA_CBL_PATA_IGN = 5, /* don't know, ignore cable handling */
357 /* SATA Status and Control Registers */
362 SCR_NOTIFICATION = 4,
365 SERR_DATA_RECOVERED = (1 << 0), /* recovered data error */
366 SERR_COMM_RECOVERED = (1 << 1), /* recovered comm failure */
367 SERR_DATA = (1 << 8), /* unrecovered data error */
368 SERR_PERSISTENT = (1 << 9), /* persistent data/comm error */
369 SERR_PROTOCOL = (1 << 10), /* protocol violation */
370 SERR_INTERNAL = (1 << 11), /* host internal error */
371 SERR_PHYRDY_CHG = (1 << 16), /* PHY RDY changed */
372 SERR_PHY_INT_ERR = (1 << 17), /* PHY internal error */
373 SERR_COMM_WAKE = (1 << 18), /* Comm wake */
374 SERR_10B_8B_ERR = (1 << 19), /* 10b to 8b decode error */
375 SERR_DISPARITY = (1 << 20), /* Disparity */
376 SERR_CRC = (1 << 21), /* CRC error */
377 SERR_HANDSHAKE = (1 << 22), /* Handshake error */
378 SERR_LINK_SEQ_ERR = (1 << 23), /* Link sequence error */
379 SERR_TRANS_ST_ERROR = (1 << 24), /* Transport state trans. error */
380 SERR_UNRECOG_FIS = (1 << 25), /* Unrecognized FIS */
381 SERR_DEV_XCHG = (1 << 26), /* device exchanged */
383 /* struct ata_taskfile flags */
384 ATA_TFLAG_LBA48 = (1 << 0), /* enable 48-bit LBA and "HOB" */
385 ATA_TFLAG_ISADDR = (1 << 1), /* enable r/w to nsect/lba regs */
386 ATA_TFLAG_DEVICE = (1 << 2), /* enable r/w to device reg */
387 ATA_TFLAG_WRITE = (1 << 3), /* data dir: host->dev==1 (write) */
388 ATA_TFLAG_LBA = (1 << 4), /* enable LBA */
389 ATA_TFLAG_FUA = (1 << 5), /* enable FUA */
390 ATA_TFLAG_POLLING = (1 << 6), /* set nIEN to 1 and use polling */
393 ATA_PROT_FLAG_PIO = (1 << 0), /* is PIO */
394 ATA_PROT_FLAG_DMA = (1 << 1), /* is DMA */
395 ATA_PROT_FLAG_DATA = ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA,
396 ATA_PROT_FLAG_NCQ = (1 << 2), /* is NCQ */
397 ATA_PROT_FLAG_ATAPI = (1 << 3), /* is ATAPI */
400 enum ata_tf_protocols {
401 /* ATA taskfile protocols */
402 ATA_PROT_UNKNOWN, /* unknown/invalid */
403 ATA_PROT_NODATA, /* no data */
404 ATA_PROT_PIO, /* PIO data xfer */
405 ATA_PROT_DMA, /* DMA */
406 ATA_PROT_NCQ, /* NCQ */
407 ATAPI_PROT_NODATA, /* packet command, no data */
408 ATAPI_PROT_PIO, /* packet command, PIO data xfer*/
409 ATAPI_PROT_DMA, /* packet command with special DMA sauce */
413 ATA_IOC_GET_IO32 = 0x309,
414 ATA_IOC_SET_IO32 = 0x324,
417 /* core structures */
424 struct ata_taskfile {
425 unsigned long flags; /* ATA_TFLAG_xxx */
426 u8 protocol; /* ATA_PROT_xxx */
428 u8 ctl; /* control reg */
430 u8 hob_feature; /* additional data */
431 u8 hob_nsect; /* to support LBA48 */
444 u8 command; /* IO operation */
450 static inline unsigned int ata_prot_flags(u8 prot)
453 case ATA_PROT_NODATA:
456 return ATA_PROT_FLAG_PIO;
458 return ATA_PROT_FLAG_DMA;
460 return ATA_PROT_FLAG_DMA | ATA_PROT_FLAG_NCQ;
461 case ATAPI_PROT_NODATA:
462 return ATA_PROT_FLAG_ATAPI;
464 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_PIO;
466 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_DMA;
471 static inline int ata_is_atapi(u8 prot)
473 return ata_prot_flags(prot) & ATA_PROT_FLAG_ATAPI;
476 static inline int ata_is_nodata(u8 prot)
478 return !(ata_prot_flags(prot) & ATA_PROT_FLAG_DATA);
481 static inline int ata_is_pio(u8 prot)
483 return ata_prot_flags(prot) & ATA_PROT_FLAG_PIO;
486 static inline int ata_is_dma(u8 prot)
488 return ata_prot_flags(prot) & ATA_PROT_FLAG_DMA;
491 static inline int ata_is_ncq(u8 prot)
493 return ata_prot_flags(prot) & ATA_PROT_FLAG_NCQ;
496 static inline int ata_is_data(u8 prot)
498 return ata_prot_flags(prot) & ATA_PROT_FLAG_DATA;
504 #define ata_id_is_ata(id) (((id)[ATA_ID_CONFIG] & (1 << 15)) == 0)
505 #define ata_id_has_lba(id) ((id)[ATA_ID_CAPABILITY] & (1 << 9))
506 #define ata_id_has_dma(id) ((id)[ATA_ID_CAPABILITY] & (1 << 8))
507 #define ata_id_has_ncq(id) ((id)[76] & (1 << 8))
508 #define ata_id_queue_depth(id) (((id)[ATA_ID_QUEUE_DEPTH] & 0x1f) + 1)
509 #define ata_id_removeable(id) ((id)[ATA_ID_CONFIG] & (1 << 7))
510 #define ata_id_has_atapi_AN(id) \
511 ( (((id)[76] != 0x0000) && ((id)[76] != 0xffff)) && \
512 ((id)[78] & (1 << 5)) )
513 #define ata_id_iordy_disable(id) ((id)[ATA_ID_CAPABILITY] & (1 << 10))
514 #define ata_id_has_iordy(id) ((id)[ATA_ID_CAPABILITY] & (1 << 11))
515 #define ata_id_u32(id,n) \
516 (((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)]))
517 #define ata_id_u64(id,n) \
518 ( ((u64) (id)[(n) + 3] << 48) | \
519 ((u64) (id)[(n) + 2] << 32) | \
520 ((u64) (id)[(n) + 1] << 16) | \
521 ((u64) (id)[(n) + 0]) )
523 #define ata_id_cdb_intr(id) (((id)[ATA_ID_CONFIG] & 0x60) == 0x20)
525 static inline bool ata_id_has_hipm(const u16 *id)
529 if (val == 0 || val == 0xffff)
532 return val & (1 << 9);
535 static inline bool ata_id_has_dipm(const u16 *id)
539 if (val == 0 || val == 0xffff)
542 return val & (1 << 3);
546 static inline int ata_id_has_fua(const u16 *id)
548 if ((id[ATA_ID_CFSSE] & 0xC000) != 0x4000)
550 return id[ATA_ID_CFSSE] & (1 << 6);
553 static inline int ata_id_has_flush(const u16 *id)
555 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
557 return id[ATA_ID_COMMAND_SET_2] & (1 << 12);
560 static inline int ata_id_has_flush_ext(const u16 *id)
562 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
564 return id[ATA_ID_COMMAND_SET_2] & (1 << 13);
567 static inline int ata_id_has_lba48(const u16 *id)
569 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
571 if (!ata_id_u64(id, ATA_ID_LBA_CAPACITY_2))
573 return id[ATA_ID_COMMAND_SET_2] & (1 << 10);
576 static inline int ata_id_hpa_enabled(const u16 *id)
578 /* Yes children, word 83 valid bits cover word 82 data */
579 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
581 /* And 87 covers 85-87 */
582 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
584 /* Check command sets enabled as well as supported */
585 if ((id[ATA_ID_CFS_ENABLE_1] & (1 << 10)) == 0)
587 return id[ATA_ID_COMMAND_SET_1] & (1 << 10);
590 static inline int ata_id_has_wcache(const u16 *id)
592 /* Yes children, word 83 valid bits cover word 82 data */
593 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
595 return id[ATA_ID_COMMAND_SET_1] & (1 << 5);
598 static inline int ata_id_has_pm(const u16 *id)
600 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
602 return id[ATA_ID_COMMAND_SET_1] & (1 << 3);
605 static inline int ata_id_rahead_enabled(const u16 *id)
607 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
609 return id[ATA_ID_CFS_ENABLE_1] & (1 << 6);
612 static inline int ata_id_wcache_enabled(const u16 *id)
614 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
616 return id[ATA_ID_CFS_ENABLE_1] & (1 << 5);
620 * ata_id_major_version - get ATA level of drive
624 * ATA-1 considers identify optional
625 * ATA-2 introduces mandatory identify
626 * ATA-3 introduces word 80 and accurate reporting
628 * The practical impact of this is that ata_id_major_version cannot
629 * reliably report on drives below ATA3.
632 static inline unsigned int ata_id_major_version(const u16 *id)
636 if (id[ATA_ID_MAJOR_VER] == 0xFFFF)
639 for (mver = 14; mver >= 1; mver--)
640 if (id[ATA_ID_MAJOR_VER] & (1 << mver))
645 static inline int ata_id_is_sata(const u16 *id)
647 return ata_id_major_version(id) >= 5 && id[ATA_ID_HW_CONFIG] == 0;
650 static inline int ata_id_has_tpm(const u16 *id)
652 /* The TPM bits are only valid on ATA8 */
653 if (ata_id_major_version(id) < 8)
655 if ((id[48] & 0xC000) != 0x4000)
657 return id[48] & (1 << 0);
660 static inline int ata_id_has_dword_io(const u16 *id)
662 /* ATA 8 reuses this flag for "trusted" computing */
663 if (ata_id_major_version(id) > 7)
665 if (id[ATA_ID_DWORD_IO] & (1 << 0))
670 static inline int ata_id_current_chs_valid(const u16 *id)
672 /* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command
673 has not been issued to the device then the values of
674 id[ATA_ID_CUR_CYLS] to id[ATA_ID_CUR_SECTORS] are vendor specific. */
675 return (id[ATA_ID_FIELD_VALID] & 1) && /* Current translation valid */
676 id[ATA_ID_CUR_CYLS] && /* cylinders in current translation */
677 id[ATA_ID_CUR_HEADS] && /* heads in current translation */
678 id[ATA_ID_CUR_HEADS] <= 16 &&
679 id[ATA_ID_CUR_SECTORS]; /* sectors in current translation */
682 static inline int ata_id_is_cfa(const u16 *id)
684 if (id[ATA_ID_CONFIG] == 0x848A) /* Standard CF */
686 /* Could be CF hiding as standard ATA */
687 if (ata_id_major_version(id) >= 3 &&
688 id[ATA_ID_COMMAND_SET_1] != 0xFFFF &&
689 (id[ATA_ID_COMMAND_SET_1] & (1 << 2)))
694 static inline int ata_drive_40wire(const u16 *dev_id)
696 if (ata_id_is_sata(dev_id))
698 if ((dev_id[ATA_ID_HW_CONFIG] & 0xE000) == 0x6000)
699 return 0; /* 80 wire */
703 static inline int ata_drive_40wire_relaxed(const u16 *dev_id)
705 if ((dev_id[ATA_ID_HW_CONFIG] & 0x2000) == 0x2000)
706 return 0; /* 80 wire */
710 static inline int atapi_cdb_len(const u16 *dev_id)
712 u16 tmp = dev_id[ATA_ID_CONFIG] & 0x3;
720 static inline int atapi_command_packet_set(const u16 *dev_id)
722 return (dev_id[ATA_ID_CONFIG] >> 8) & 0x1f;
725 static inline int atapi_id_dmadir(const u16 *dev_id)
727 return ata_id_major_version(dev_id) >= 7 && (dev_id[62] & 0x8000);
730 static inline int is_multi_taskfile(struct ata_taskfile *tf)
732 return (tf->command == ATA_CMD_READ_MULTI) ||
733 (tf->command == ATA_CMD_WRITE_MULTI) ||
734 (tf->command == ATA_CMD_READ_MULTI_EXT) ||
735 (tf->command == ATA_CMD_WRITE_MULTI_EXT) ||
736 (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT);
739 static inline int ata_ok(u8 status)
741 return ((status & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ | ATA_ERR))
745 static inline int lba_28_ok(u64 block, u32 n_block)
747 /* check the ending block number */
748 return ((block + n_block - 1) < ((u64)1 << 28)) && (n_block <= 256);
751 static inline int lba_48_ok(u64 block, u32 n_block)
753 /* check the ending block number */
754 return ((block + n_block - 1) < ((u64)1 << 48)) && (n_block <= 65536);
757 #define sata_pmp_gscr_vendor(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] & 0xffff)
758 #define sata_pmp_gscr_devid(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] >> 16)
759 #define sata_pmp_gscr_rev(gscr) (((gscr)[SATA_PMP_GSCR_REV] >> 8) & 0xff)
760 #define sata_pmp_gscr_ports(gscr) ((gscr)[SATA_PMP_GSCR_PORT_INFO] & 0xf)
762 #endif /* __LINUX_ATA_H__ */