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_DRQ = (1 << 3), /* data request i/o */
157 ATA_ERR = (1 << 0), /* have an error */
158 ATA_SRST = (1 << 2), /* software reset */
159 ATA_ICRC = (1 << 7), /* interface CRC error */
160 ATA_UNC = (1 << 6), /* uncorrectable media error */
161 ATA_IDNF = (1 << 4), /* ID not found */
162 ATA_ABORTED = (1 << 2), /* command aborted */
164 /* ATA command block registers */
167 ATA_REG_NSECT = 0x02,
171 ATA_REG_DEVICE = 0x06,
172 ATA_REG_STATUS = 0x07,
174 ATA_REG_FEATURE = ATA_REG_ERR, /* and their aliases */
175 ATA_REG_CMD = ATA_REG_STATUS,
176 ATA_REG_BYTEL = ATA_REG_LBAM,
177 ATA_REG_BYTEH = ATA_REG_LBAH,
178 ATA_REG_DEVSEL = ATA_REG_DEVICE,
179 ATA_REG_IRQ = ATA_REG_NSECT,
181 /* ATA device commands */
182 ATA_CMD_DEV_RESET = 0x08, /* ATAPI device reset */
183 ATA_CMD_CHK_POWER = 0xE5, /* check power mode */
184 ATA_CMD_STANDBY = 0xE2, /* place in standby power mode */
185 ATA_CMD_IDLE = 0xE3, /* place in idle power mode */
186 ATA_CMD_EDD = 0x90, /* execute device diagnostic */
187 ATA_CMD_FLUSH = 0xE7,
188 ATA_CMD_FLUSH_EXT = 0xEA,
189 ATA_CMD_ID_ATA = 0xEC,
190 ATA_CMD_ID_ATAPI = 0xA1,
192 ATA_CMD_READ_EXT = 0x25,
193 ATA_CMD_WRITE = 0xCA,
194 ATA_CMD_WRITE_EXT = 0x35,
195 ATA_CMD_WRITE_FUA_EXT = 0x3D,
196 ATA_CMD_FPDMA_READ = 0x60,
197 ATA_CMD_FPDMA_WRITE = 0x61,
198 ATA_CMD_PIO_READ = 0x20,
199 ATA_CMD_PIO_READ_EXT = 0x24,
200 ATA_CMD_PIO_WRITE = 0x30,
201 ATA_CMD_PIO_WRITE_EXT = 0x34,
202 ATA_CMD_READ_MULTI = 0xC4,
203 ATA_CMD_READ_MULTI_EXT = 0x29,
204 ATA_CMD_WRITE_MULTI = 0xC5,
205 ATA_CMD_WRITE_MULTI_EXT = 0x39,
206 ATA_CMD_WRITE_MULTI_FUA_EXT = 0xCE,
207 ATA_CMD_SET_FEATURES = 0xEF,
208 ATA_CMD_SET_MULTI = 0xC6,
209 ATA_CMD_PACKET = 0xA0,
210 ATA_CMD_VERIFY = 0x40,
211 ATA_CMD_VERIFY_EXT = 0x42,
212 ATA_CMD_STANDBYNOW1 = 0xE0,
213 ATA_CMD_IDLEIMMEDIATE = 0xE1,
214 ATA_CMD_SLEEP = 0xE6,
215 ATA_CMD_INIT_DEV_PARAMS = 0x91,
216 ATA_CMD_READ_NATIVE_MAX = 0xF8,
217 ATA_CMD_READ_NATIVE_MAX_EXT = 0x27,
218 ATA_CMD_SET_MAX = 0xF9,
219 ATA_CMD_SET_MAX_EXT = 0x37,
220 ATA_CMD_READ_LOG_EXT = 0x2f,
221 ATA_CMD_PMP_READ = 0xE4,
222 ATA_CMD_PMP_WRITE = 0xE8,
223 ATA_CMD_CONF_OVERLAY = 0xB1,
224 ATA_CMD_SEC_FREEZE_LOCK = 0xF5,
225 ATA_CMD_SMART = 0xB0,
226 ATA_CMD_MEDIA_LOCK = 0xDE,
227 ATA_CMD_MEDIA_UNLOCK = 0xDF,
228 /* marked obsolete in the ATA/ATAPI-7 spec */
229 ATA_CMD_RESTORE = 0x10,
230 /* EXABYTE specific */
231 ATA_EXABYTE_ENABLE_NEST = 0xF0,
233 /* READ_LOG_EXT pages */
234 ATA_LOG_SATA_NCQ = 0x10,
236 /* READ/WRITE LONG (obsolete) */
237 ATA_CMD_READ_LONG = 0x22,
238 ATA_CMD_READ_LONG_ONCE = 0x23,
239 ATA_CMD_WRITE_LONG = 0x32,
240 ATA_CMD_WRITE_LONG_ONCE = 0x33,
242 /* SETFEATURES stuff */
243 SETFEATURES_XFER = 0x03,
252 XFER_MW_DMA_4 = 0x24, /* CFA only */
253 XFER_MW_DMA_3 = 0x23, /* CFA only */
254 XFER_MW_DMA_2 = 0x22,
255 XFER_MW_DMA_1 = 0x21,
256 XFER_MW_DMA_0 = 0x20,
257 XFER_SW_DMA_2 = 0x12,
258 XFER_SW_DMA_1 = 0x11,
259 XFER_SW_DMA_0 = 0x10,
260 XFER_PIO_6 = 0x0E, /* CFA only */
261 XFER_PIO_5 = 0x0D, /* CFA only */
267 XFER_PIO_SLOW = 0x00,
269 SETFEATURES_WC_ON = 0x02, /* Enable write cache */
270 SETFEATURES_WC_OFF = 0x82, /* Disable write cache */
272 /* Enable/Disable Automatic Acoustic Management */
273 SETFEATURES_AAM_ON = 0x42,
274 SETFEATURES_AAM_OFF = 0xC2,
276 SETFEATURES_SPINUP = 0x07, /* Spin-up drive */
278 SETFEATURES_SATA_ENABLE = 0x10, /* Enable use of SATA feature */
279 SETFEATURES_SATA_DISABLE = 0x90, /* Disable use of SATA feature */
281 /* SETFEATURE Sector counts for SATA features */
282 SATA_AN = 0x05, /* Asynchronous Notification */
283 SATA_DIPM = 0x03, /* Device Initiated Power Management */
285 /* feature values for SET_MAX */
286 ATA_SET_MAX_ADDR = 0x00,
287 ATA_SET_MAX_PASSWD = 0x01,
288 ATA_SET_MAX_LOCK = 0x02,
289 ATA_SET_MAX_UNLOCK = 0x03,
290 ATA_SET_MAX_FREEZE_LOCK = 0x04,
292 /* feature values for DEVICE CONFIGURATION OVERLAY */
293 ATA_DCO_RESTORE = 0xC0,
294 ATA_DCO_FREEZE_LOCK = 0xC1,
295 ATA_DCO_IDENTIFY = 0xC2,
298 /* feature values for SMART */
299 ATA_SMART_ENABLE = 0xD8,
300 ATA_SMART_READ_VALUES = 0xD0,
301 ATA_SMART_READ_THRESHOLDS = 0xD1,
303 /* password used in LBA Mid / LBA High for executing SMART commands */
304 ATA_SMART_LBAM_PASS = 0x4F,
305 ATA_SMART_LBAH_PASS = 0xC2,
308 ATAPI_PKT_DMA = (1 << 0),
309 ATAPI_DMADIR = (1 << 2), /* ATAPI data dir:
310 0=to device, 1=to host */
314 SATA_PMP_MAX_PORTS = 15,
315 SATA_PMP_CTRL_PORT = 15,
317 SATA_PMP_GSCR_DWORDS = 128,
318 SATA_PMP_GSCR_PROD_ID = 0,
319 SATA_PMP_GSCR_REV = 1,
320 SATA_PMP_GSCR_PORT_INFO = 2,
321 SATA_PMP_GSCR_ERROR = 32,
322 SATA_PMP_GSCR_ERROR_EN = 33,
323 SATA_PMP_GSCR_FEAT = 64,
324 SATA_PMP_GSCR_FEAT_EN = 96,
326 SATA_PMP_PSCR_STATUS = 0,
327 SATA_PMP_PSCR_ERROR = 1,
328 SATA_PMP_PSCR_CONTROL = 2,
330 SATA_PMP_FEAT_BIST = (1 << 0),
331 SATA_PMP_FEAT_PMREQ = (1 << 1),
332 SATA_PMP_FEAT_DYNSSC = (1 << 2),
333 SATA_PMP_FEAT_NOTIFY = (1 << 3),
339 ATA_CBL_PATA40_SHORT = 3, /* 40 wire cable to high UDMA spec */
340 ATA_CBL_PATA_UNK = 4, /* don't know, maybe 80c? */
341 ATA_CBL_PATA_IGN = 5, /* don't know, ignore cable handling */
344 /* SATA Status and Control Registers */
349 SCR_NOTIFICATION = 4,
352 SERR_DATA_RECOVERED = (1 << 0), /* recovered data error */
353 SERR_COMM_RECOVERED = (1 << 1), /* recovered comm failure */
354 SERR_DATA = (1 << 8), /* unrecovered data error */
355 SERR_PERSISTENT = (1 << 9), /* persistent data/comm error */
356 SERR_PROTOCOL = (1 << 10), /* protocol violation */
357 SERR_INTERNAL = (1 << 11), /* host internal error */
358 SERR_PHYRDY_CHG = (1 << 16), /* PHY RDY changed */
359 SERR_PHY_INT_ERR = (1 << 17), /* PHY internal error */
360 SERR_COMM_WAKE = (1 << 18), /* Comm wake */
361 SERR_10B_8B_ERR = (1 << 19), /* 10b to 8b decode error */
362 SERR_DISPARITY = (1 << 20), /* Disparity */
363 SERR_CRC = (1 << 21), /* CRC error */
364 SERR_HANDSHAKE = (1 << 22), /* Handshake error */
365 SERR_LINK_SEQ_ERR = (1 << 23), /* Link sequence error */
366 SERR_TRANS_ST_ERROR = (1 << 24), /* Transport state trans. error */
367 SERR_UNRECOG_FIS = (1 << 25), /* Unrecognized FIS */
368 SERR_DEV_XCHG = (1 << 26), /* device exchanged */
370 /* struct ata_taskfile flags */
371 ATA_TFLAG_LBA48 = (1 << 0), /* enable 48-bit LBA and "HOB" */
372 ATA_TFLAG_ISADDR = (1 << 1), /* enable r/w to nsect/lba regs */
373 ATA_TFLAG_DEVICE = (1 << 2), /* enable r/w to device reg */
374 ATA_TFLAG_WRITE = (1 << 3), /* data dir: host->dev==1 (write) */
375 ATA_TFLAG_LBA = (1 << 4), /* enable LBA */
376 ATA_TFLAG_FUA = (1 << 5), /* enable FUA */
377 ATA_TFLAG_POLLING = (1 << 6), /* set nIEN to 1 and use polling */
380 ATA_PROT_FLAG_PIO = (1 << 0), /* is PIO */
381 ATA_PROT_FLAG_DMA = (1 << 1), /* is DMA */
382 ATA_PROT_FLAG_DATA = ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA,
383 ATA_PROT_FLAG_NCQ = (1 << 2), /* is NCQ */
384 ATA_PROT_FLAG_ATAPI = (1 << 3), /* is ATAPI */
387 enum ata_tf_protocols {
388 /* ATA taskfile protocols */
389 ATA_PROT_UNKNOWN, /* unknown/invalid */
390 ATA_PROT_NODATA, /* no data */
391 ATA_PROT_PIO, /* PIO data xfer */
392 ATA_PROT_DMA, /* DMA */
393 ATA_PROT_NCQ, /* NCQ */
394 ATAPI_PROT_NODATA, /* packet command, no data */
395 ATAPI_PROT_PIO, /* packet command, PIO data xfer*/
396 ATAPI_PROT_DMA, /* packet command with special DMA sauce */
400 ATA_IOC_GET_IO32 = 0x309,
401 ATA_IOC_SET_IO32 = 0x324,
404 /* core structures */
411 struct ata_taskfile {
412 unsigned long flags; /* ATA_TFLAG_xxx */
413 u8 protocol; /* ATA_PROT_xxx */
415 u8 ctl; /* control reg */
417 u8 hob_feature; /* additional data */
418 u8 hob_nsect; /* to support LBA48 */
431 u8 command; /* IO operation */
437 static inline unsigned int ata_prot_flags(u8 prot)
440 case ATA_PROT_NODATA:
443 return ATA_PROT_FLAG_PIO;
445 return ATA_PROT_FLAG_DMA;
447 return ATA_PROT_FLAG_DMA | ATA_PROT_FLAG_NCQ;
448 case ATAPI_PROT_NODATA:
449 return ATA_PROT_FLAG_ATAPI;
451 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_PIO;
453 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_DMA;
458 static inline int ata_is_atapi(u8 prot)
460 return ata_prot_flags(prot) & ATA_PROT_FLAG_ATAPI;
463 static inline int ata_is_nodata(u8 prot)
465 return !(ata_prot_flags(prot) & ATA_PROT_FLAG_DATA);
468 static inline int ata_is_pio(u8 prot)
470 return ata_prot_flags(prot) & ATA_PROT_FLAG_PIO;
473 static inline int ata_is_dma(u8 prot)
475 return ata_prot_flags(prot) & ATA_PROT_FLAG_DMA;
478 static inline int ata_is_ncq(u8 prot)
480 return ata_prot_flags(prot) & ATA_PROT_FLAG_NCQ;
483 static inline int ata_is_data(u8 prot)
485 return ata_prot_flags(prot) & ATA_PROT_FLAG_DATA;
491 #define ata_id_is_ata(id) (((id)[ATA_ID_CONFIG] & (1 << 15)) == 0)
492 #define ata_id_has_lba(id) ((id)[ATA_ID_CAPABILITY] & (1 << 9))
493 #define ata_id_has_dma(id) ((id)[ATA_ID_CAPABILITY] & (1 << 8))
494 #define ata_id_has_ncq(id) ((id)[76] & (1 << 8))
495 #define ata_id_queue_depth(id) (((id)[ATA_ID_QUEUE_DEPTH] & 0x1f) + 1)
496 #define ata_id_removeable(id) ((id)[ATA_ID_CONFIG] & (1 << 7))
497 #define ata_id_has_atapi_AN(id) \
498 ( (((id)[76] != 0x0000) && ((id)[76] != 0xffff)) && \
499 ((id)[78] & (1 << 5)) )
500 #define ata_id_iordy_disable(id) ((id)[ATA_ID_CAPABILITY] & (1 << 10))
501 #define ata_id_has_iordy(id) ((id)[ATA_ID_CAPABILITY] & (1 << 11))
502 #define ata_id_u32(id,n) \
503 (((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)]))
504 #define ata_id_u64(id,n) \
505 ( ((u64) (id)[(n) + 3] << 48) | \
506 ((u64) (id)[(n) + 2] << 32) | \
507 ((u64) (id)[(n) + 1] << 16) | \
508 ((u64) (id)[(n) + 0]) )
510 #define ata_id_cdb_intr(id) (((id)[ATA_ID_CONFIG] & 0x60) == 0x20)
512 static inline bool ata_id_has_hipm(const u16 *id)
516 if (val == 0 || val == 0xffff)
519 return val & (1 << 9);
522 static inline bool ata_id_has_dipm(const u16 *id)
526 if (val == 0 || val == 0xffff)
529 return val & (1 << 3);
533 static inline int ata_id_has_fua(const u16 *id)
535 if ((id[ATA_ID_CFSSE] & 0xC000) != 0x4000)
537 return id[ATA_ID_CFSSE] & (1 << 6);
540 static inline int ata_id_has_flush(const u16 *id)
542 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
544 return id[ATA_ID_COMMAND_SET_2] & (1 << 12);
547 static inline int ata_id_has_flush_ext(const u16 *id)
549 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
551 return id[ATA_ID_COMMAND_SET_2] & (1 << 13);
554 static inline int ata_id_has_lba48(const u16 *id)
556 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
558 if (!ata_id_u64(id, ATA_ID_LBA_CAPACITY_2))
560 return id[ATA_ID_COMMAND_SET_2] & (1 << 10);
563 static inline int ata_id_hpa_enabled(const u16 *id)
565 /* Yes children, word 83 valid bits cover word 82 data */
566 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
568 /* And 87 covers 85-87 */
569 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
571 /* Check command sets enabled as well as supported */
572 if ((id[ATA_ID_CFS_ENABLE_1] & (1 << 10)) == 0)
574 return id[ATA_ID_COMMAND_SET_1] & (1 << 10);
577 static inline int ata_id_has_wcache(const u16 *id)
579 /* Yes children, word 83 valid bits cover word 82 data */
580 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
582 return id[ATA_ID_COMMAND_SET_1] & (1 << 5);
585 static inline int ata_id_has_pm(const u16 *id)
587 if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
589 return id[ATA_ID_COMMAND_SET_1] & (1 << 3);
592 static inline int ata_id_rahead_enabled(const u16 *id)
594 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
596 return id[ATA_ID_CFS_ENABLE_1] & (1 << 6);
599 static inline int ata_id_wcache_enabled(const u16 *id)
601 if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
603 return id[ATA_ID_CFS_ENABLE_1] & (1 << 5);
607 * ata_id_major_version - get ATA level of drive
611 * ATA-1 considers identify optional
612 * ATA-2 introduces mandatory identify
613 * ATA-3 introduces word 80 and accurate reporting
615 * The practical impact of this is that ata_id_major_version cannot
616 * reliably report on drives below ATA3.
619 static inline unsigned int ata_id_major_version(const u16 *id)
623 if (id[ATA_ID_MAJOR_VER] == 0xFFFF)
626 for (mver = 14; mver >= 1; mver--)
627 if (id[ATA_ID_MAJOR_VER] & (1 << mver))
632 static inline int ata_id_is_sata(const u16 *id)
634 return ata_id_major_version(id) >= 5 && id[ATA_ID_HW_CONFIG] == 0;
637 static inline int ata_id_has_tpm(const u16 *id)
639 /* The TPM bits are only valid on ATA8 */
640 if (ata_id_major_version(id) < 8)
642 if ((id[48] & 0xC000) != 0x4000)
644 return id[48] & (1 << 0);
647 static inline int ata_id_has_dword_io(const u16 *id)
649 /* ATA 8 reuses this flag for "trusted" computing */
650 if (ata_id_major_version(id) > 7)
652 if (id[ATA_ID_DWORD_IO] & (1 << 0))
657 static inline int ata_id_current_chs_valid(const u16 *id)
659 /* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command
660 has not been issued to the device then the values of
661 id[ATA_ID_CUR_CYLS] to id[ATA_ID_CUR_SECTORS] are vendor specific. */
662 return (id[ATA_ID_FIELD_VALID] & 1) && /* Current translation valid */
663 id[ATA_ID_CUR_CYLS] && /* cylinders in current translation */
664 id[ATA_ID_CUR_HEADS] && /* heads in current translation */
665 id[ATA_ID_CUR_HEADS] <= 16 &&
666 id[ATA_ID_CUR_SECTORS]; /* sectors in current translation */
669 static inline int ata_id_is_cfa(const u16 *id)
671 if (id[ATA_ID_CONFIG] == 0x848A) /* Standard CF */
673 /* Could be CF hiding as standard ATA */
674 if (ata_id_major_version(id) >= 3 &&
675 id[ATA_ID_COMMAND_SET_1] != 0xFFFF &&
676 (id[ATA_ID_COMMAND_SET_1] & (1 << 2)))
681 static inline int ata_drive_40wire(const u16 *dev_id)
683 if (ata_id_is_sata(dev_id))
685 if ((dev_id[ATA_ID_HW_CONFIG] & 0xE000) == 0x6000)
686 return 0; /* 80 wire */
690 static inline int ata_drive_40wire_relaxed(const u16 *dev_id)
692 if ((dev_id[ATA_ID_HW_CONFIG] & 0x2000) == 0x2000)
693 return 0; /* 80 wire */
697 static inline int atapi_cdb_len(const u16 *dev_id)
699 u16 tmp = dev_id[ATA_ID_CONFIG] & 0x3;
707 static inline int atapi_command_packet_set(const u16 *dev_id)
709 return (dev_id[ATA_ID_CONFIG] >> 8) & 0x1f;
712 static inline int atapi_id_dmadir(const u16 *dev_id)
714 return ata_id_major_version(dev_id) >= 7 && (dev_id[62] & 0x8000);
717 static inline int is_multi_taskfile(struct ata_taskfile *tf)
719 return (tf->command == ATA_CMD_READ_MULTI) ||
720 (tf->command == ATA_CMD_WRITE_MULTI) ||
721 (tf->command == ATA_CMD_READ_MULTI_EXT) ||
722 (tf->command == ATA_CMD_WRITE_MULTI_EXT) ||
723 (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT);
726 static inline int ata_ok(u8 status)
728 return ((status & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ | ATA_ERR))
732 static inline int lba_28_ok(u64 block, u32 n_block)
734 /* check the ending block number */
735 return ((block + n_block - 1) < ((u64)1 << 28)) && (n_block <= 256);
738 static inline int lba_48_ok(u64 block, u32 n_block)
740 /* check the ending block number */
741 return ((block + n_block - 1) < ((u64)1 << 48)) && (n_block <= 65536);
744 #define sata_pmp_gscr_vendor(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] & 0xffff)
745 #define sata_pmp_gscr_devid(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] >> 16)
746 #define sata_pmp_gscr_rev(gscr) (((gscr)[SATA_PMP_GSCR_REV] >> 8) & 0xff)
747 #define sata_pmp_gscr_ports(gscr) ((gscr)[SATA_PMP_GSCR_PORT_INFO] & 0xf)
749 #endif /* __LINUX_ATA_H__ */