2 * Copyright 2003-2004 Red Hat, Inc. All rights reserved.
3 * Copyright 2003-2004 Jeff Garzik
4 * Copyright (C) 2008 Freescale Semiconductor, Inc.
5 * Dave Liu <daveliu@freescale.com>
6 * port from libata of linux kernel
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
31 /* various global constants */
32 ATA_MAX_DEVICES
= 2, /* per bus/port */
33 ATA_MAX_PRD
= 256, /* we could make these 256/256 */
35 ATA_MAX_SECTORS_128
= 128,
36 ATA_MAX_SECTORS
= 256,
37 ATA_MAX_SECTORS_LBA48
= 65535,
38 ATA_MAX_SECTORS_TAPE
= 65535,
44 ATA_ID_OLD_PIO_MODES
= 51,
45 ATA_ID_FIELD_VALID
= 53,
46 ATA_ID_LBA_SECTORS
= 60,
47 ATA_ID_MWDMA_MODES
= 63,
48 ATA_ID_PIO_MODES
= 64,
49 ATA_ID_EIDE_DMA_MIN
= 65,
51 ATA_ID_EIDE_PIO_IORDY
= 68,
52 ATA_ID_PIO4
= (1 << 1),
53 ATA_ID_QUEUE_DEPTH
= 75,
55 ATA_ID_SATA_FEATURES
= 78,
56 ATA_ID_SATA_FEATURES_EN
= 79,
57 ATA_ID_MAJOR_VER
= 80,
58 ATA_ID_MINOR_VER
= 81,
59 ATA_ID_UDMA_MODES
= 88,
60 ATA_ID_LBA48_SECTORS
= 100,
62 ATA_ID_SERNO_LEN
= 20,
63 ATA_ID_FW_REV_LEN
= 8,
69 ATA_PIO1
= ATA_PIO0
| (1 << 1),
70 ATA_PIO2
= ATA_PIO1
| (1 << 2),
71 ATA_PIO3
= ATA_PIO2
| (1 << 3),
72 ATA_PIO4
= ATA_PIO3
| (1 << 4),
73 ATA_PIO5
= ATA_PIO4
| (1 << 5),
74 ATA_PIO6
= ATA_PIO5
| (1 << 6),
76 ATA_SWDMA0
= (1 << 0),
77 ATA_SWDMA1
= ATA_SWDMA0
| (1 << 1),
78 ATA_SWDMA2
= ATA_SWDMA1
| (1 << 2),
80 ATA_SWDMA2_ONLY
= (1 << 2),
82 ATA_MWDMA0
= (1 << 0),
83 ATA_MWDMA1
= ATA_MWDMA0
| (1 << 1),
84 ATA_MWDMA2
= ATA_MWDMA1
| (1 << 2),
86 ATA_MWDMA12_ONLY
= (1 << 1) | (1 << 2),
87 ATA_MWDMA2_ONLY
= (1 << 2),
90 ATA_UDMA1
= ATA_UDMA0
| (1 << 1),
91 ATA_UDMA2
= ATA_UDMA1
| (1 << 2),
92 ATA_UDMA3
= ATA_UDMA2
| (1 << 3),
93 ATA_UDMA4
= ATA_UDMA3
| (1 << 4),
94 ATA_UDMA5
= ATA_UDMA4
| (1 << 5),
95 ATA_UDMA6
= ATA_UDMA5
| (1 << 6),
96 ATA_UDMA7
= ATA_UDMA6
| (1 << 7),
97 /* ATA_UDMA7 is just for completeness... doesn't exist (yet?). */
99 ATA_UDMA_MASK_40C
= ATA_UDMA2
, /* udma0-2 */
103 ATA_PRD_TBL_SZ
= (ATA_MAX_PRD
* ATA_PRD_SZ
),
104 ATA_PRD_EOT
= (1 << 31), /* end-of-table flag */
106 ATA_DMA_TABLE_OFS
= 4,
109 ATA_DMA_WR
= (1 << 3),
110 ATA_DMA_START
= (1 << 0),
111 ATA_DMA_INTR
= (1 << 2),
112 ATA_DMA_ERR
= (1 << 1),
113 ATA_DMA_ACTIVE
= (1 << 0),
115 /* bits in ATA command block registers */
116 ATA_HOB
= (1 << 7), /* LBA48 selector */
117 ATA_NIEN
= (1 << 1), /* disable-irq flag */
118 ATA_LBA
= (1 << 6), /* LBA28 selector */
119 ATA_DEV1
= (1 << 4), /* Select Device 1 (slave) */
120 ATA_DEVICE_OBS
= (1 << 7) | (1 << 5), /* obs bits in dev reg */
121 ATA_DEVCTL_OBS
= (1 << 3), /* obsolete bit in devctl reg */
122 ATA_BUSY
= (1 << 7), /* BSY status bit */
123 ATA_DRDY
= (1 << 6), /* device ready */
124 ATA_DF
= (1 << 5), /* device fault */
125 ATA_DRQ
= (1 << 3), /* data request i/o */
126 ATA_ERR
= (1 << 0), /* have an error */
127 ATA_SRST
= (1 << 2), /* software reset */
128 ATA_ICRC
= (1 << 7), /* interface CRC error */
129 ATA_UNC
= (1 << 6), /* uncorrectable media error */
130 ATA_IDNF
= (1 << 4), /* ID not found */
131 ATA_ABORTED
= (1 << 2), /* command aborted */
133 /* ATA command block registers */
136 ATA_REG_NSECT
= 0x02,
140 ATA_REG_DEVICE
= 0x06,
141 ATA_REG_STATUS
= 0x07,
143 ATA_REG_FEATURE
= ATA_REG_ERR
, /* and their aliases */
144 ATA_REG_CMD
= ATA_REG_STATUS
,
145 ATA_REG_BYTEL
= ATA_REG_LBAM
,
146 ATA_REG_BYTEH
= ATA_REG_LBAH
,
147 ATA_REG_DEVSEL
= ATA_REG_DEVICE
,
148 ATA_REG_IRQ
= ATA_REG_NSECT
,
150 /* ATA device commands */
151 ATA_CMD_DEV_RESET
= 0x08, /* ATAPI device reset */
152 ATA_CMD_CHK_POWER
= 0xE5, /* check power mode */
153 ATA_CMD_STANDBY
= 0xE2, /* place in standby power mode */
154 ATA_CMD_IDLE
= 0xE3, /* place in idle power mode */
155 ATA_CMD_EDD
= 0x90, /* execute device diagnostic */
156 ATA_CMD_FLUSH
= 0xE7,
157 ATA_CMD_FLUSH_EXT
= 0xEA,
158 ATA_CMD_ID_ATA
= 0xEC,
159 ATA_CMD_ID_ATAPI
= 0xA1,
161 ATA_CMD_READ_EXT
= 0x25,
162 ATA_CMD_WRITE
= 0xCA,
163 ATA_CMD_WRITE_EXT
= 0x35,
164 ATA_CMD_WRITE_FUA_EXT
= 0x3D,
165 ATA_CMD_FPDMA_READ
= 0x60,
166 ATA_CMD_FPDMA_WRITE
= 0x61,
167 ATA_CMD_PIO_READ
= 0x20,
168 ATA_CMD_PIO_READ_EXT
= 0x24,
169 ATA_CMD_PIO_WRITE
= 0x30,
170 ATA_CMD_PIO_WRITE_EXT
= 0x34,
171 ATA_CMD_READ_MULTI
= 0xC4,
172 ATA_CMD_READ_MULTI_EXT
= 0x29,
173 ATA_CMD_WRITE_MULTI
= 0xC5,
174 ATA_CMD_WRITE_MULTI_EXT
= 0x39,
175 ATA_CMD_WRITE_MULTI_FUA_EXT
= 0xCE,
176 ATA_CMD_SET_FEATURES
= 0xEF,
177 ATA_CMD_SET_MULTI
= 0xC6,
178 ATA_CMD_PACKET
= 0xA0,
179 ATA_CMD_VERIFY
= 0x40,
180 ATA_CMD_VERIFY_EXT
= 0x42,
181 ATA_CMD_STANDBYNOW1
= 0xE0,
182 ATA_CMD_IDLEIMMEDIATE
= 0xE1,
183 ATA_CMD_SLEEP
= 0xE6,
184 ATA_CMD_INIT_DEV_PARAMS
= 0x91,
185 ATA_CMD_READ_NATIVE_MAX
= 0xF8,
186 ATA_CMD_READ_NATIVE_MAX_EXT
= 0x27,
187 ATA_CMD_SET_MAX
= 0xF9,
188 ATA_CMD_SET_MAX_EXT
= 0x37,
189 ATA_CMD_READ_LOG_EXT
= 0x2f,
190 ATA_CMD_PMP_READ
= 0xE4,
191 ATA_CMD_PMP_WRITE
= 0xE8,
192 ATA_CMD_CONF_OVERLAY
= 0xB1,
193 ATA_CMD_SEC_FREEZE_LOCK
= 0xF5,
195 /* READ_LOG_EXT pages */
196 ATA_LOG_SATA_NCQ
= 0x10,
198 /* READ/WRITE LONG (obsolete) */
199 ATA_CMD_READ_LONG
= 0x22,
200 ATA_CMD_READ_LONG_ONCE
= 0x23,
201 ATA_CMD_WRITE_LONG
= 0x32,
202 ATA_CMD_WRITE_LONG_ONCE
= 0x33,
204 /* SETFEATURES stuff */
205 SETFEATURES_XFER
= 0x03,
214 XFER_MW_DMA_4
= 0x24, /* CFA only */
215 XFER_MW_DMA_3
= 0x23, /* CFA only */
216 XFER_MW_DMA_2
= 0x22,
217 XFER_MW_DMA_1
= 0x21,
218 XFER_MW_DMA_0
= 0x20,
219 XFER_SW_DMA_2
= 0x12,
220 XFER_SW_DMA_1
= 0x11,
221 XFER_SW_DMA_0
= 0x10,
222 XFER_PIO_6
= 0x0E, /* CFA only */
223 XFER_PIO_5
= 0x0D, /* CFA only */
229 XFER_PIO_SLOW
= 0x00,
231 SETFEATURES_WC_ON
= 0x02, /* Enable write cache */
232 SETFEATURES_WC_OFF
= 0x82, /* Disable write cache */
234 SETFEATURES_SPINUP
= 0x07, /* Spin-up drive */
236 SETFEATURES_SATA_ENABLE
= 0x10, /* Enable use of SATA feature */
237 SETFEATURES_SATA_DISABLE
= 0x90, /* Disable use of SATA feature */
239 /* SETFEATURE Sector counts for SATA features */
240 SATA_AN
= 0x05, /* Asynchronous Notification */
241 SATA_DIPM
= 0x03, /* Device Initiated Power Management */
243 /* feature values for SET_MAX */
244 ATA_SET_MAX_ADDR
= 0x00,
245 ATA_SET_MAX_PASSWD
= 0x01,
246 ATA_SET_MAX_LOCK
= 0x02,
247 ATA_SET_MAX_UNLOCK
= 0x03,
248 ATA_SET_MAX_FREEZE_LOCK
= 0x04,
250 /* feature values for DEVICE CONFIGURATION OVERLAY */
251 ATA_DCO_RESTORE
= 0xC0,
252 ATA_DCO_FREEZE_LOCK
= 0xC1,
253 ATA_DCO_IDENTIFY
= 0xC2,
257 ATAPI_PKT_DMA
= (1 << 0),
258 ATAPI_DMADIR
= (1 << 2), /* ATAPI data dir:
259 0=to device, 1=to host */
263 SATA_PMP_MAX_PORTS
= 15,
264 SATA_PMP_CTRL_PORT
= 15,
266 SATA_PMP_GSCR_DWORDS
= 128,
267 SATA_PMP_GSCR_PROD_ID
= 0,
268 SATA_PMP_GSCR_REV
= 1,
269 SATA_PMP_GSCR_PORT_INFO
= 2,
270 SATA_PMP_GSCR_ERROR
= 32,
271 SATA_PMP_GSCR_ERROR_EN
= 33,
272 SATA_PMP_GSCR_FEAT
= 64,
273 SATA_PMP_GSCR_FEAT_EN
= 96,
275 SATA_PMP_PSCR_STATUS
= 0,
276 SATA_PMP_PSCR_ERROR
= 1,
277 SATA_PMP_PSCR_CONTROL
= 2,
279 SATA_PMP_FEAT_BIST
= (1 << 0),
280 SATA_PMP_FEAT_PMREQ
= (1 << 1),
281 SATA_PMP_FEAT_DYNSSC
= (1 << 2),
282 SATA_PMP_FEAT_NOTIFY
= (1 << 3),
288 ATA_CBL_PATA40_SHORT
= 3, /* 40 wire cable to high UDMA spec */
289 ATA_CBL_PATA_UNK
= 4, /* don't know, maybe 80c? */
290 ATA_CBL_PATA_IGN
= 5, /* don't know, ignore cable handling */
293 /* SATA Status and Control Registers */
298 SCR_NOTIFICATION
= 4,
301 SERR_DATA_RECOVERED
= (1 << 0), /* recovered data error */
302 SERR_COMM_RECOVERED
= (1 << 1), /* recovered comm failure */
303 SERR_DATA
= (1 << 8), /* unrecovered data error */
304 SERR_PERSISTENT
= (1 << 9), /* persistent data/comm error */
305 SERR_PROTOCOL
= (1 << 10), /* protocol violation */
306 SERR_INTERNAL
= (1 << 11), /* host internal error */
307 SERR_PHYRDY_CHG
= (1 << 16), /* PHY RDY changed */
308 SERR_PHY_INT_ERR
= (1 << 17), /* PHY internal error */
309 SERR_COMM_WAKE
= (1 << 18), /* Comm wake */
310 SERR_10B_8B_ERR
= (1 << 19), /* 10b to 8b decode error */
311 SERR_DISPARITY
= (1 << 20), /* Disparity */
312 SERR_CRC
= (1 << 21), /* CRC error */
313 SERR_HANDSHAKE
= (1 << 22), /* Handshake error */
314 SERR_LINK_SEQ_ERR
= (1 << 23), /* Link sequence error */
315 SERR_TRANS_ST_ERROR
= (1 << 24), /* Transport state trans. error */
316 SERR_UNRECOG_FIS
= (1 << 25), /* Unrecognized FIS */
317 SERR_DEV_XCHG
= (1 << 26), /* device exchanged */
319 /* struct ata_taskfile flags */
320 ATA_TFLAG_LBA48
= (1 << 0), /* enable 48-bit LBA and "HOB" */
321 ATA_TFLAG_ISADDR
= (1 << 1), /* enable r/w to nsect/lba regs */
322 ATA_TFLAG_DEVICE
= (1 << 2), /* enable r/w to device reg */
323 ATA_TFLAG_WRITE
= (1 << 3), /* data dir: host->dev==1 (write) */
324 ATA_TFLAG_LBA
= (1 << 4), /* enable LBA */
325 ATA_TFLAG_FUA
= (1 << 5), /* enable FUA */
326 ATA_TFLAG_POLLING
= (1 << 6), /* set nIEN to 1 and use polling */
329 ATA_PROT_FLAG_PIO
= (1 << 0), /* is PIO */
330 ATA_PROT_FLAG_DMA
= (1 << 1), /* is DMA */
331 ATA_PROT_FLAG_DATA
= ATA_PROT_FLAG_PIO
| ATA_PROT_FLAG_DMA
,
332 ATA_PROT_FLAG_NCQ
= (1 << 2), /* is NCQ */
333 ATA_PROT_FLAG_ATAPI
= (1 << 3), /* is ATAPI */
336 enum ata_tf_protocols
{
337 /* ATA taskfile protocols */
338 ATA_PROT_UNKNOWN
, /* unknown/invalid */
339 ATA_PROT_NODATA
, /* no data */
340 ATA_PROT_PIO
, /* PIO data xfer */
341 ATA_PROT_DMA
, /* DMA */
342 ATA_PROT_NCQ
, /* NCQ */
343 ATAPI_PROT_NODATA
, /* packet command, no data */
344 ATAPI_PROT_PIO
, /* packet command, PIO data xfer*/
345 ATAPI_PROT_DMA
, /* packet command with special DMA sauce */
349 ATA_IOC_GET_IO32
= 0x309,
350 ATA_IOC_SET_IO32
= 0x324,
354 ATA_DEV_ATA
, /* ATA device */
355 ATA_DEV_ATAPI
, /* ATAPI device */
356 ATA_DEV_PMP
, /* Port Multiplier Port */
357 ATA_DEV_UNKNOWN
, /* unknown */
360 struct ata_taskfile
{
361 unsigned long flags
; /* ATA_TFLAG_xxx */
362 u8 protocol
; /* ATA_PROT_xxx */
364 u8 ctl
; /* control reg */
366 u8 hob_feature
; /* additional data */
367 u8 hob_nsect
; /* to support LBA48 */
380 u8 command
; /* IO operation */
386 static inline unsigned int ata_prot_flags(u8 prot
)
389 case ATA_PROT_NODATA
:
392 return ATA_PROT_FLAG_PIO
;
394 return ATA_PROT_FLAG_DMA
;
396 return ATA_PROT_FLAG_DMA
| ATA_PROT_FLAG_NCQ
;
397 case ATAPI_PROT_NODATA
:
398 return ATA_PROT_FLAG_ATAPI
;
400 return ATA_PROT_FLAG_ATAPI
| ATA_PROT_FLAG_PIO
;
402 return ATA_PROT_FLAG_ATAPI
| ATA_PROT_FLAG_DMA
;
407 static inline int ata_is_atapi(u8 prot
)
409 return ata_prot_flags(prot
) & ATA_PROT_FLAG_ATAPI
;
412 static inline int ata_is_nodata(u8 prot
)
414 return !(ata_prot_flags(prot
) & ATA_PROT_FLAG_DATA
);
417 static inline int ata_is_pio(u8 prot
)
419 return ata_prot_flags(prot
) & ATA_PROT_FLAG_PIO
;
422 static inline int ata_is_dma(u8 prot
)
424 return ata_prot_flags(prot
) & ATA_PROT_FLAG_DMA
;
427 static inline int ata_is_ncq(u8 prot
)
429 return ata_prot_flags(prot
) & ATA_PROT_FLAG_NCQ
;
432 static inline int ata_is_data(u8 prot
)
434 return ata_prot_flags(prot
) & ATA_PROT_FLAG_DATA
;
440 #define ata_id_is_ata(id) (((id)[0] & (1 << 15)) == 0)
441 #define ata_id_has_lba(id) ((id)[49] & (1 << 9))
442 #define ata_id_has_dma(id) ((id)[49] & (1 << 8))
443 #define ata_id_has_ncq(id) ((id)[76] & (1 << 8))
444 #define ata_id_queue_depth(id) (((id)[75] & 0x1f) + 1)
445 #define ata_id_removeable(id) ((id)[0] & (1 << 7))
446 #define ata_id_iordy_disable(id) ((id)[49] & (1 << 10))
447 #define ata_id_has_iordy(id) ((id)[49] & (1 << 11))
449 #define ata_id_u32(id,n) \
450 (((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)]))
451 #define ata_id_u64(id,n) \
452 ( ((u64) (id)[(n) + 3] << 48) | \
453 ((u64) (id)[(n) + 2] << 32) | \
454 ((u64) (id)[(n) + 1] << 16) | \
455 ((u64) (id)[(n) + 0]) )
457 #define ata_id_cdb_intr(id) (((id)[0] & 0x60) == 0x20)
459 static inline int ata_id_has_fua(const u16
*id
)
461 if ((id
[84] & 0xC000) != 0x4000)
463 return id
[84] & (1 << 6);
466 static inline int ata_id_has_flush(const u16
*id
)
468 if ((id
[83] & 0xC000) != 0x4000)
470 return id
[83] & (1 << 12);
473 static inline int ata_id_has_flush_ext(const u16
*id
)
475 if ((id
[83] & 0xC000) != 0x4000)
477 return id
[83] & (1 << 13);
480 static inline int ata_id_has_lba48(const u16
*id
)
482 if ((id
[83] & 0xC000) != 0x4000)
484 if (!ata_id_u64(id
, 100))
486 return id
[83] & (1 << 10);
489 static inline int ata_id_hpa_enabled(const u16
*id
)
491 /* Yes children, word 83 valid bits cover word 82 data */
492 if ((id
[83] & 0xC000) != 0x4000)
494 /* And 87 covers 85-87 */
495 if ((id
[87] & 0xC000) != 0x4000)
497 /* Check command sets enabled as well as supported */
498 if ((id
[85] & ( 1 << 10)) == 0)
500 return id
[82] & (1 << 10);
503 static inline int ata_id_has_wcache(const u16
*id
)
505 /* Yes children, word 83 valid bits cover word 82 data */
506 if ((id
[83] & 0xC000) != 0x4000)
508 return id
[82] & (1 << 5);
511 static inline int ata_id_has_pm(const u16
*id
)
513 if ((id
[83] & 0xC000) != 0x4000)
515 return id
[82] & (1 << 3);
518 static inline int ata_id_rahead_enabled(const u16
*id
)
520 if ((id
[87] & 0xC000) != 0x4000)
522 return id
[85] & (1 << 6);
525 static inline int ata_id_wcache_enabled(const u16
*id
)
527 if ((id
[87] & 0xC000) != 0x4000)
529 return id
[85] & (1 << 5);
532 static inline unsigned int ata_id_major_version(const u16
*id
)
536 if (id
[ATA_ID_MAJOR_VER
] == 0xFFFF)
539 for (mver
= 14; mver
>= 1; mver
--)
540 if (id
[ATA_ID_MAJOR_VER
] & (1 << mver
))
545 static inline int ata_id_is_sata(const u16
*id
)
547 return ata_id_major_version(id
) >= 5 && id
[93] == 0;
550 static inline int ata_id_has_tpm(const u16
*id
)
552 /* The TPM bits are only valid on ATA8 */
553 if (ata_id_major_version(id
) < 8)
555 if ((id
[48] & 0xC000) != 0x4000)
557 return id
[48] & (1 << 0);
560 static inline int ata_id_has_dword_io(const u16
*id
)
562 /* ATA 8 reuses this flag for "trusted" computing */
563 if (ata_id_major_version(id
) > 7)
565 if (id
[48] & (1 << 0))
570 static inline int ata_id_current_chs_valid(const u16
*id
)
572 /* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command
573 has not been issued to the device then the values of
574 id[54] to id[56] are vendor specific. */
575 return (id
[53] & 0x01) && /* Current translation valid */
576 id
[54] && /* cylinders in current translation */
577 id
[55] && /* heads in current translation */
579 id
[56]; /* sectors in current translation */
582 static inline int ata_id_is_cfa(const u16
*id
)
585 if (v
== 0x848A) /* Standard CF */
587 /* Could be CF hiding as standard ATA */
588 if (ata_id_major_version(id
) >= 3 && id
[82] != 0xFFFF &&
589 (id
[82] & ( 1 << 2)))
594 static inline int ata_drive_40wire(const u16
*dev_id
)
596 if (ata_id_is_sata(dev_id
))
598 if ((dev_id
[93] & 0xE000) == 0x6000)
599 return 0; /* 80 wire */
603 static inline int ata_drive_40wire_relaxed(const u16
*dev_id
)
605 if ((dev_id
[93] & 0x2000) == 0x2000)
606 return 0; /* 80 wire */
610 static inline int atapi_cdb_len(const u16
*dev_id
)
612 u16 tmp
= dev_id
[0] & 0x3;
620 static inline int atapi_command_packet_set(const u16
*dev_id
)
622 return (dev_id
[0] >> 8) & 0x1f;
625 static inline int atapi_id_dmadir(const u16
*dev_id
)
627 return ata_id_major_version(dev_id
) >= 7 && (dev_id
[62] & 0x8000);
630 static inline int is_multi_taskfile(struct ata_taskfile
*tf
)
632 return (tf
->command
== ATA_CMD_READ_MULTI
) ||
633 (tf
->command
== ATA_CMD_WRITE_MULTI
) ||
634 (tf
->command
== ATA_CMD_READ_MULTI_EXT
) ||
635 (tf
->command
== ATA_CMD_WRITE_MULTI_EXT
) ||
636 (tf
->command
== ATA_CMD_WRITE_MULTI_FUA_EXT
);
639 static inline int ata_ok(u8 status
)
641 return ((status
& (ATA_BUSY
| ATA_DRDY
| ATA_DF
| ATA_DRQ
| ATA_ERR
))
645 static inline int lba_28_ok(u64 block
, u32 n_block
)
647 /* check the ending block number */
648 return ((block
+ n_block
- 1) < ((u64
)1 << 28)) && (n_block
<= 256);
651 static inline int lba_48_ok(u64 block
, u32 n_block
)
653 /* check the ending block number */
654 return ((block
+ n_block
- 1) < ((u64
)1 << 48)) && (n_block
<= 65536);
657 #define sata_pmp_gscr_vendor(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] & 0xffff)
658 #define sata_pmp_gscr_devid(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] >> 16)
659 #define sata_pmp_gscr_rev(gscr) (((gscr)[SATA_PMP_GSCR_REV] >> 8) & 0xff)
660 #define sata_pmp_gscr_ports(gscr) ((gscr)[SATA_PMP_GSCR_PORT_INFO] & 0xf)
662 u64
ata_id_n_sectors(u16
*id
);
663 u32
ata_dev_classify(u32 sig
);
664 void ata_id_c_string(const u16
*id
, unsigned char *s
,
665 unsigned int ofs
, unsigned int len
);
666 void ata_dump_id(u16
*id
);
667 void ata_swap_buf_le16(u16
*buf
, unsigned int buf_words
);
669 #endif /* __LIBATA_H__ */