1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /*
3 * Copyright 2003-2004 Red Hat, Inc. All rights reserved.
4 * Copyright 2003-2004 Jeff Garzik
5 * Copyright (C) 2008 Freescale Semiconductor, Inc.
6 * Dave Liu <daveliu@freescale.com>
7 * port from libata of linux kernel
8 */
9
10 #ifndef __LIBATA_H__
11 #define __LIBATA_H__
12
13 #include <common.h>
14
15 enum {
16 /* various global constants */
17 ATA_MAX_DEVICES = 2, /* per bus/port */
18 ATA_MAX_PRD = 256, /* we could make these 256/256 */
19 ATA_SECT_SIZE = 512,
20 ATA_MAX_SECTORS_128 = 128,
21 ATA_MAX_SECTORS = 256,
22 ATA_MAX_SECTORS_LBA48 = 65535,
23 ATA_MAX_SECTORS_TAPE = 65535,
24
25 ATA_ID_WORDS = 256,
26 ATA_ID_SERNO = 10,
27 ATA_ID_FW_REV = 23,
28 ATA_ID_PROD = 27,
29 ATA_ID_OLD_PIO_MODES = 51,
30 ATA_ID_FIELD_VALID = 53,
31 ATA_ID_LBA_SECTORS = 60,
32 ATA_ID_MWDMA_MODES = 63,
33 ATA_ID_PIO_MODES = 64,
34 ATA_ID_EIDE_DMA_MIN = 65,
35 ATA_ID_EIDE_PIO = 67,
36 ATA_ID_EIDE_PIO_IORDY = 68,
37 ATA_ID_PIO4 = (1 << 1),
38 ATA_ID_QUEUE_DEPTH = 75,
39 ATA_ID_SATA_CAP = 76,
40 ATA_ID_SATA_FEATURES = 78,
41 ATA_ID_SATA_FEATURES_EN = 79,
42 ATA_ID_MAJOR_VER = 80,
43 ATA_ID_MINOR_VER = 81,
44 ATA_ID_UDMA_MODES = 88,
45 ATA_ID_LBA48_SECTORS = 100,
46
47 ATA_ID_SERNO_LEN = 20,
48 ATA_ID_FW_REV_LEN = 8,
49 ATA_ID_PROD_LEN = 40,
50
51 ATA_PCI_CTL_OFS = 2,
52
53 ATA_PIO0 = (1 << 0),
54 ATA_PIO1 = ATA_PIO0 | (1 << 1),
55 ATA_PIO2 = ATA_PIO1 | (1 << 2),
56 ATA_PIO3 = ATA_PIO2 | (1 << 3),
57 ATA_PIO4 = ATA_PIO3 | (1 << 4),
58 ATA_PIO5 = ATA_PIO4 | (1 << 5),
59 ATA_PIO6 = ATA_PIO5 | (1 << 6),
60
61 ATA_SWDMA0 = (1 << 0),
62 ATA_SWDMA1 = ATA_SWDMA0 | (1 << 1),
63 ATA_SWDMA2 = ATA_SWDMA1 | (1 << 2),
64
65 ATA_SWDMA2_ONLY = (1 << 2),
66
67 ATA_MWDMA0 = (1 << 0),
68 ATA_MWDMA1 = ATA_MWDMA0 | (1 << 1),
69 ATA_MWDMA2 = ATA_MWDMA1 | (1 << 2),
70
71 ATA_MWDMA12_ONLY = (1 << 1) | (1 << 2),
72 ATA_MWDMA2_ONLY = (1 << 2),
73
74 ATA_UDMA0 = (1 << 0),
75 ATA_UDMA1 = ATA_UDMA0 | (1 << 1),
76 ATA_UDMA2 = ATA_UDMA1 | (1 << 2),
77 ATA_UDMA3 = ATA_UDMA2 | (1 << 3),
78 ATA_UDMA4 = ATA_UDMA3 | (1 << 4),
79 ATA_UDMA5 = ATA_UDMA4 | (1 << 5),
80 ATA_UDMA6 = ATA_UDMA5 | (1 << 6),
81 ATA_UDMA7 = ATA_UDMA6 | (1 << 7),
82 /* ATA_UDMA7 is just for completeness... doesn't exist (yet?). */
83
84 ATA_UDMA_MASK_40C = ATA_UDMA2, /* udma0-2 */
85
86 /* DMA-related */
87 ATA_PRD_SZ = 8,
88 ATA_PRD_TBL_SZ = (ATA_MAX_PRD * ATA_PRD_SZ),
89 ATA_PRD_EOT = (1 << 31), /* end-of-table flag */
90
91 ATA_DMA_TABLE_OFS = 4,
92 ATA_DMA_STATUS = 2,
93 ATA_DMA_CMD = 0,
94 ATA_DMA_WR = (1 << 3),
95 ATA_DMA_START = (1 << 0),
96 ATA_DMA_INTR = (1 << 2),
97 ATA_DMA_ERR = (1 << 1),
98 ATA_DMA_ACTIVE = (1 << 0),
99
100 /* bits in ATA command block registers */
101 ATA_HOB = (1 << 7), /* LBA48 selector */
102 ATA_NIEN = (1 << 1), /* disable-irq flag */
103 ATA_LBA = (1 << 6), /* LBA28 selector */
104 ATA_DEV1 = (1 << 4), /* Select Device 1 (slave) */
105 ATA_DEVICE_OBS = (1 << 7) | (1 << 5), /* obs bits in dev reg */
106 ATA_DEVCTL_OBS = (1 << 3), /* obsolete bit in devctl reg */
107 ATA_BUSY = (1 << 7), /* BSY status bit */
108 ATA_DRDY = (1 << 6), /* device ready */
109 ATA_DF = (1 << 5), /* device fault */
110 ATA_DRQ = (1 << 3), /* data request i/o */
111 ATA_ERR = (1 << 0), /* have an error */
112 ATA_SRST = (1 << 2), /* software reset */
113 ATA_ICRC = (1 << 7), /* interface CRC error */
114 ATA_UNC = (1 << 6), /* uncorrectable media error */
115 ATA_IDNF = (1 << 4), /* ID not found */
116 ATA_ABORTED = (1 << 2), /* command aborted */
117
118 /* ATA command block registers */
119 ATA_REG_DATA = 0x00,
120 ATA_REG_ERR = 0x01,
121 ATA_REG_NSECT = 0x02,
122 ATA_REG_LBAL = 0x03,
123 ATA_REG_LBAM = 0x04,
124 ATA_REG_LBAH = 0x05,
125 ATA_REG_DEVICE = 0x06,
126 ATA_REG_STATUS = 0x07,
127
128 ATA_REG_FEATURE = ATA_REG_ERR, /* and their aliases */
129 ATA_REG_CMD = ATA_REG_STATUS,
130 ATA_REG_BYTEL = ATA_REG_LBAM,
131 ATA_REG_BYTEH = ATA_REG_LBAH,
132 ATA_REG_DEVSEL = ATA_REG_DEVICE,
133 ATA_REG_IRQ = ATA_REG_NSECT,
134
135 /* ATA device commands */
136 ATA_CMD_DEV_RESET = 0x08, /* ATAPI device reset */
137 ATA_CMD_PIO_READ = 0x20, /* Read sectors with retry */
138 ATA_CMD_PIO_READ_EXT = 0x24,
139 ATA_CMD_READ_EXT = 0x25,
140 ATA_CMD_READ_NATIVE_MAX_EXT = 0x27,
141 ATA_CMD_READ_MULTI_EXT = 0x29,
142 ATA_CMD_READ_LOG_EXT = 0x2f,
143 ATA_CMD_PIO_WRITE = 0x30, /* write sectors with retry */
144 ATA_CMD_PIO_WRITE_EXT = 0x34,
145 ATA_CMD_WRITE_EXT = 0x35,
146 ATA_CMD_SET_MAX_EXT = 0x37,
147 ATA_CMD_WRITE_MULTI_EXT = 0x39,
148 ATA_CMD_WRITE_FUA_EXT = 0x3D,
149 ATA_CMD_VERIFY = 0x40, /* read verify sectors with retry */
150 ATA_CMD_VERIFY_EXT = 0x42,
151 ATA_CMD_FPDMA_READ = 0x60,
152 ATA_CMD_FPDMA_WRITE = 0x61,
153 ATA_CMD_EDD = 0x90, /* execute device diagnostic */
154 ATA_CMD_INIT_DEV_PARAMS = 0x91, /* initialize device parameters */
155 ATA_CMD_PACKET = 0xA0, /* ATAPI packet */
156 ATA_CMD_ID_ATAPI = 0xA1, /* ATAPI identify device */
157 ATA_CMD_CONF_OVERLAY = 0xB1,
158 ATA_CMD_READ_MULTI = 0xC4, /* read multiple */
159 ATA_CMD_WRITE_MULTI = 0xC5, /* write multiple */
160 ATA_CMD_SET_MULTI = 0xC6, /* set multiple mode */
161 ATA_CMD_READ = 0xC8, /* read DMA with retry */
162 ATA_CMD_WRITE = 0xCA, /* write DMA with retry */
163 ATA_CMD_WRITE_MULTI_FUA_EXT = 0xCE,
164 ATA_CMD_STANDBYNOW1 = 0xE0, /* standby immediate */
165 ATA_CMD_IDLEIMMEDIATE = 0xE1, /* idle immediate */
166 ATA_CMD_STANDBY = 0xE2, /* place in standby power mode */
167 ATA_CMD_IDLE = 0xE3, /* place in idle power mode */
168 ATA_CMD_PMP_READ = 0xE4, /* read buffer */
169 ATA_CMD_CHK_POWER = 0xE5, /* check power mode */
170 ATA_CMD_SLEEP = 0xE6, /* sleep */
171 ATA_CMD_FLUSH = 0xE7,
172 ATA_CMD_PMP_WRITE = 0xE8, /* write buffer */
173 ATA_CMD_FLUSH_EXT = 0xEA,
174 ATA_CMD_ID_ATA = 0xEC, /* identify device */
175 ATA_CMD_SET_FEATURES = 0xEF, /* set features */
176 ATA_CMD_SEC_FREEZE_LOCK = 0xF5, /* security freeze */
177 ATA_CMD_READ_NATIVE_MAX = 0xF8,
178 ATA_CMD_SET_MAX = 0xF9,
179
180 /* READ_LOG_EXT pages */
181 ATA_LOG_SATA_NCQ = 0x10,
182
183 /* READ/WRITE LONG (obsolete) */
184 ATA_CMD_READ_LONG = 0x22,
185 ATA_CMD_READ_LONG_ONCE = 0x23,
186 ATA_CMD_WRITE_LONG = 0x32,
187 ATA_CMD_WRITE_LONG_ONCE = 0x33,
188
189 /* SETFEATURES stuff */
190 SETFEATURES_XFER = 0x03,
191 XFER_UDMA_7 = 0x47,
192 XFER_UDMA_6 = 0x46,
193 XFER_UDMA_5 = 0x45,
194 XFER_UDMA_4 = 0x44,
195 XFER_UDMA_3 = 0x43,
196 XFER_UDMA_2 = 0x42,
197 XFER_UDMA_1 = 0x41,
198 XFER_UDMA_0 = 0x40,
199 XFER_MW_DMA_4 = 0x24, /* CFA only */
200 XFER_MW_DMA_3 = 0x23, /* CFA only */
201 XFER_MW_DMA_2 = 0x22,
202 XFER_MW_DMA_1 = 0x21,
203 XFER_MW_DMA_0 = 0x20,
204 XFER_SW_DMA_2 = 0x12,
205 XFER_SW_DMA_1 = 0x11,
206 XFER_SW_DMA_0 = 0x10,
207 XFER_PIO_6 = 0x0E, /* CFA only */
208 XFER_PIO_5 = 0x0D, /* CFA only */
209 XFER_PIO_4 = 0x0C,
210 XFER_PIO_3 = 0x0B,
211 XFER_PIO_2 = 0x0A,
212 XFER_PIO_1 = 0x09,
213 XFER_PIO_0 = 0x08,
214 XFER_PIO_SLOW = 0x00,
215
216 SETFEATURES_WC_ON = 0x02, /* Enable write cache */
217 SETFEATURES_WC_OFF = 0x82, /* Disable write cache */
218
219 SETFEATURES_SPINUP = 0x07, /* Spin-up drive */
220
221 SETFEATURES_SATA_ENABLE = 0x10, /* Enable use of SATA feature */
222 SETFEATURES_SATA_DISABLE = 0x90, /* Disable use of SATA feature */
223
224 /* SETFEATURE Sector counts for SATA features */
225 SATA_AN = 0x05, /* Asynchronous Notification */
226 SATA_DIPM = 0x03, /* Device Initiated Power Management */
227
228 /* feature values for SET_MAX */
229 ATA_SET_MAX_ADDR = 0x00,
230 ATA_SET_MAX_PASSWD = 0x01,
231 ATA_SET_MAX_LOCK = 0x02,
232 ATA_SET_MAX_UNLOCK = 0x03,
233 ATA_SET_MAX_FREEZE_LOCK = 0x04,
234
235 /* feature values for DEVICE CONFIGURATION OVERLAY */
236 ATA_DCO_RESTORE = 0xC0,
237 ATA_DCO_FREEZE_LOCK = 0xC1,
238 ATA_DCO_IDENTIFY = 0xC2,
239 ATA_DCO_SET = 0xC3,
240
241 /* ATAPI stuff */
242 ATAPI_PKT_DMA = (1 << 0),
243 ATAPI_DMADIR = (1 << 2), /* ATAPI data dir:
244 0=to device, 1=to host */
245 ATAPI_CDB_LEN = 16,
246
247 /* PMP stuff */
248 SATA_PMP_MAX_PORTS = 15,
249 SATA_PMP_CTRL_PORT = 15,
250
251 SATA_PMP_GSCR_DWORDS = 128,
252 SATA_PMP_GSCR_PROD_ID = 0,
253 SATA_PMP_GSCR_REV = 1,
254 SATA_PMP_GSCR_PORT_INFO = 2,
255 SATA_PMP_GSCR_ERROR = 32,
256 SATA_PMP_GSCR_ERROR_EN = 33,
257 SATA_PMP_GSCR_FEAT = 64,
258 SATA_PMP_GSCR_FEAT_EN = 96,
259
260 SATA_PMP_PSCR_STATUS = 0,
261 SATA_PMP_PSCR_ERROR = 1,
262 SATA_PMP_PSCR_CONTROL = 2,
263
264 SATA_PMP_FEAT_BIST = (1 << 0),
265 SATA_PMP_FEAT_PMREQ = (1 << 1),
266 SATA_PMP_FEAT_DYNSSC = (1 << 2),
267 SATA_PMP_FEAT_NOTIFY = (1 << 3),
268
269 /* cable types */
270 ATA_CBL_NONE = 0,
271 ATA_CBL_PATA40 = 1,
272 ATA_CBL_PATA80 = 2,
273 ATA_CBL_PATA40_SHORT = 3, /* 40 wire cable to high UDMA spec */
274 ATA_CBL_PATA_UNK = 4, /* don't know, maybe 80c? */
275 ATA_CBL_PATA_IGN = 5, /* don't know, ignore cable handling */
276 ATA_CBL_SATA = 6,
277
278 /* SATA Status and Control Registers */
279 SCR_STATUS = 0,
280 SCR_ERROR = 1,
281 SCR_CONTROL = 2,
282 SCR_ACTIVE = 3,
283 SCR_NOTIFICATION = 4,
284
285 /* SError bits */
286 SERR_DATA_RECOVERED = (1 << 0), /* recovered data error */
287 SERR_COMM_RECOVERED = (1 << 1), /* recovered comm failure */
288 SERR_DATA = (1 << 8), /* unrecovered data error */
289 SERR_PERSISTENT = (1 << 9), /* persistent data/comm error */
290 SERR_PROTOCOL = (1 << 10), /* protocol violation */
291 SERR_INTERNAL = (1 << 11), /* host internal error */
292 SERR_PHYRDY_CHG = (1 << 16), /* PHY RDY changed */
293 SERR_PHY_INT_ERR = (1 << 17), /* PHY internal error */
294 SERR_COMM_WAKE = (1 << 18), /* Comm wake */
295 SERR_10B_8B_ERR = (1 << 19), /* 10b to 8b decode error */
296 SERR_DISPARITY = (1 << 20), /* Disparity */
297 SERR_CRC = (1 << 21), /* CRC error */
298 SERR_HANDSHAKE = (1 << 22), /* Handshake error */
299 SERR_LINK_SEQ_ERR = (1 << 23), /* Link sequence error */
300 SERR_TRANS_ST_ERROR = (1 << 24), /* Transport state trans. error */
301 SERR_UNRECOG_FIS = (1 << 25), /* Unrecognized FIS */
302 SERR_DEV_XCHG = (1 << 26), /* device exchanged */
303
304 /* struct ata_taskfile flags */
305 ATA_TFLAG_LBA48 = (1 << 0), /* enable 48-bit LBA and "HOB" */
306 ATA_TFLAG_ISADDR = (1 << 1), /* enable r/w to nsect/lba regs */
307 ATA_TFLAG_DEVICE = (1 << 2), /* enable r/w to device reg */
308 ATA_TFLAG_WRITE = (1 << 3), /* data dir: host->dev==1 (write) */
309 ATA_TFLAG_LBA = (1 << 4), /* enable LBA */
310 ATA_TFLAG_FUA = (1 << 5), /* enable FUA */
311 ATA_TFLAG_POLLING = (1 << 6), /* set nIEN to 1 and use polling */
312
313 /* protocol flags */
314 ATA_PROT_FLAG_PIO = (1 << 0), /* is PIO */
315 ATA_PROT_FLAG_DMA = (1 << 1), /* is DMA */
316 ATA_PROT_FLAG_DATA = ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA,
317 ATA_PROT_FLAG_NCQ = (1 << 2), /* is NCQ */
318 ATA_PROT_FLAG_ATAPI = (1 << 3), /* is ATAPI */
319 };
320
321 enum ata_tf_protocols {
322 /* ATA taskfile protocols */
323 ATA_PROT_UNKNOWN, /* unknown/invalid */
324 ATA_PROT_NODATA, /* no data */
325 ATA_PROT_PIO, /* PIO data xfer */
326 ATA_PROT_DMA, /* DMA */
327 ATA_PROT_NCQ, /* NCQ */
328 ATAPI_PROT_NODATA, /* packet command, no data */
329 ATAPI_PROT_PIO, /* packet command, PIO data xfer*/
330 ATAPI_PROT_DMA, /* packet command with special DMA sauce */
331 };
332
333 enum ata_ioctls {
334 ATA_IOC_GET_IO32 = 0x309,
335 ATA_IOC_SET_IO32 = 0x324,
336 };
337
338 enum ata_dev_typed {
339 ATA_DEV_ATA, /* ATA device */
340 ATA_DEV_ATAPI, /* ATAPI device */
341 ATA_DEV_PMP, /* Port Multiplier Port */
342 ATA_DEV_UNKNOWN, /* unknown */
343 };
344
345 struct ata_taskfile {
346 unsigned long flags; /* ATA_TFLAG_xxx */
347 u8 protocol; /* ATA_PROT_xxx */
348
349 u8 ctl; /* control reg */
350
351 u8 hob_feature; /* additional data */
352 u8 hob_nsect; /* to support LBA48 */
353 u8 hob_lbal;
354 u8 hob_lbam;
355 u8 hob_lbah;
356
357 u8 feature;
358 u8 nsect;
359 u8 lbal;
360 u8 lbam;
361 u8 lbah;
362
363 u8 device;
364
365 u8 command; /* IO operation */
366 };
367
368 /*
369 * protocol tests
370 */
ata_prot_flags(u8 prot)371 static inline unsigned int ata_prot_flags(u8 prot)
372 {
373 switch (prot) {
374 case ATA_PROT_NODATA:
375 return 0;
376 case ATA_PROT_PIO:
377 return ATA_PROT_FLAG_PIO;
378 case ATA_PROT_DMA:
379 return ATA_PROT_FLAG_DMA;
380 case ATA_PROT_NCQ:
381 return ATA_PROT_FLAG_DMA | ATA_PROT_FLAG_NCQ;
382 case ATAPI_PROT_NODATA:
383 return ATA_PROT_FLAG_ATAPI;
384 case ATAPI_PROT_PIO:
385 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_PIO;
386 case ATAPI_PROT_DMA:
387 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_DMA;
388 }
389 return 0;
390 }
391
ata_is_atapi(u8 prot)392 static inline int ata_is_atapi(u8 prot)
393 {
394 return ata_prot_flags(prot) & ATA_PROT_FLAG_ATAPI;
395 }
396
ata_is_nodata(u8 prot)397 static inline int ata_is_nodata(u8 prot)
398 {
399 return !(ata_prot_flags(prot) & ATA_PROT_FLAG_DATA);
400 }
401
ata_is_pio(u8 prot)402 static inline int ata_is_pio(u8 prot)
403 {
404 return ata_prot_flags(prot) & ATA_PROT_FLAG_PIO;
405 }
406
ata_is_dma(u8 prot)407 static inline int ata_is_dma(u8 prot)
408 {
409 return ata_prot_flags(prot) & ATA_PROT_FLAG_DMA;
410 }
411
ata_is_ncq(u8 prot)412 static inline int ata_is_ncq(u8 prot)
413 {
414 return ata_prot_flags(prot) & ATA_PROT_FLAG_NCQ;
415 }
416
ata_is_data(u8 prot)417 static inline int ata_is_data(u8 prot)
418 {
419 return ata_prot_flags(prot) & ATA_PROT_FLAG_DATA;
420 }
421
422 /*
423 * id tests
424 */
425 #define ata_id_is_ata(id) (((id)[0] & (1 << 15)) == 0)
426 #define ata_id_has_lba(id) ((id)[49] & (1 << 9))
427 #define ata_id_has_dma(id) ((id)[49] & (1 << 8))
428 #define ata_id_has_ncq(id) ((id)[76] & (1 << 8))
429 #define ata_id_queue_depth(id) (((id)[75] & 0x1f) + 1)
430 #define ata_id_removeable(id) ((id)[0] & (1 << 7))
431 #define ata_id_iordy_disable(id) ((id)[49] & (1 << 10))
432 #define ata_id_has_iordy(id) ((id)[49] & (1 << 11))
433
434 #define ata_id_u32(id,n) \
435 (((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)]))
436 #define ata_id_u64(id,n) \
437 ( ((u64) (id)[(n) + 3] << 48) | \
438 ((u64) (id)[(n) + 2] << 32) | \
439 ((u64) (id)[(n) + 1] << 16) | \
440 ((u64) (id)[(n) + 0]) )
441
442 #define ata_id_cdb_intr(id) (((id)[0] & 0x60) == 0x20)
443
ata_id_has_fua(const u16 * id)444 static inline int ata_id_has_fua(const u16 *id)
445 {
446 if ((id[84] & 0xC000) != 0x4000)
447 return 0;
448 return id[84] & (1 << 6);
449 }
450
ata_id_has_flush(const u16 * id)451 static inline int ata_id_has_flush(const u16 *id)
452 {
453 if ((id[83] & 0xC000) != 0x4000)
454 return 0;
455 return id[83] & (1 << 12);
456 }
457
ata_id_has_flush_ext(const u16 * id)458 static inline int ata_id_has_flush_ext(const u16 *id)
459 {
460 if ((id[83] & 0xC000) != 0x4000)
461 return 0;
462 return id[83] & (1 << 13);
463 }
464
ata_id_has_lba48(const u16 * id)465 static inline int ata_id_has_lba48(const u16 *id)
466 {
467 if ((id[83] & 0xC000) != 0x4000)
468 return 0;
469 if (!ata_id_u64(id, 100))
470 return 0;
471 return id[83] & (1 << 10);
472 }
473
ata_id_hpa_enabled(const u16 * id)474 static inline int ata_id_hpa_enabled(const u16 *id)
475 {
476 /* Yes children, word 83 valid bits cover word 82 data */
477 if ((id[83] & 0xC000) != 0x4000)
478 return 0;
479 /* And 87 covers 85-87 */
480 if ((id[87] & 0xC000) != 0x4000)
481 return 0;
482 /* Check command sets enabled as well as supported */
483 if ((id[85] & ( 1 << 10)) == 0)
484 return 0;
485 return id[82] & (1 << 10);
486 }
487
ata_id_has_wcache(const u16 * id)488 static inline int ata_id_has_wcache(const u16 *id)
489 {
490 /* Yes children, word 83 valid bits cover word 82 data */
491 if ((id[83] & 0xC000) != 0x4000)
492 return 0;
493 return id[82] & (1 << 5);
494 }
495
ata_id_has_pm(const u16 * id)496 static inline int ata_id_has_pm(const u16 *id)
497 {
498 if ((id[83] & 0xC000) != 0x4000)
499 return 0;
500 return id[82] & (1 << 3);
501 }
502
ata_id_rahead_enabled(const u16 * id)503 static inline int ata_id_rahead_enabled(const u16 *id)
504 {
505 if ((id[87] & 0xC000) != 0x4000)
506 return 0;
507 return id[85] & (1 << 6);
508 }
509
ata_id_wcache_enabled(const u16 * id)510 static inline int ata_id_wcache_enabled(const u16 *id)
511 {
512 if ((id[87] & 0xC000) != 0x4000)
513 return 0;
514 return id[85] & (1 << 5);
515 }
516
ata_id_major_version(const u16 * id)517 static inline unsigned int ata_id_major_version(const u16 *id)
518 {
519 unsigned int mver;
520
521 if (id[ATA_ID_MAJOR_VER] == 0xFFFF)
522 return 0;
523
524 for (mver = 14; mver >= 1; mver--)
525 if (id[ATA_ID_MAJOR_VER] & (1 << mver))
526 break;
527 return mver;
528 }
529
ata_id_is_sata(const u16 * id)530 static inline int ata_id_is_sata(const u16 *id)
531 {
532 return ata_id_major_version(id) >= 5 && id[93] == 0;
533 }
534
ata_id_has_tpm(const u16 * id)535 static inline int ata_id_has_tpm(const u16 *id)
536 {
537 /* The TPM bits are only valid on ATA8 */
538 if (ata_id_major_version(id) < 8)
539 return 0;
540 if ((id[48] & 0xC000) != 0x4000)
541 return 0;
542 return id[48] & (1 << 0);
543 }
544
ata_id_has_dword_io(const u16 * id)545 static inline int ata_id_has_dword_io(const u16 *id)
546 {
547 /* ATA 8 reuses this flag for "trusted" computing */
548 if (ata_id_major_version(id) > 7)
549 return 0;
550 if (id[48] & (1 << 0))
551 return 1;
552 return 0;
553 }
554
ata_id_current_chs_valid(const u16 * id)555 static inline int ata_id_current_chs_valid(const u16 *id)
556 {
557 /* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command
558 has not been issued to the device then the values of
559 id[54] to id[56] are vendor specific. */
560 return (id[53] & 0x01) && /* Current translation valid */
561 id[54] && /* cylinders in current translation */
562 id[55] && /* heads in current translation */
563 id[55] <= 16 &&
564 id[56]; /* sectors in current translation */
565 }
566
ata_id_is_cfa(const u16 * id)567 static inline int ata_id_is_cfa(const u16 *id)
568 {
569 u16 v = id[0];
570 if (v == 0x848A) /* Standard CF */
571 return 1;
572 /* Could be CF hiding as standard ATA */
573 if (ata_id_major_version(id) >= 3 && id[82] != 0xFFFF &&
574 (id[82] & ( 1 << 2)))
575 return 1;
576 return 0;
577 }
578
ata_drive_40wire(const u16 * dev_id)579 static inline int ata_drive_40wire(const u16 *dev_id)
580 {
581 if (ata_id_is_sata(dev_id))
582 return 0; /* SATA */
583 if ((dev_id[93] & 0xE000) == 0x6000)
584 return 0; /* 80 wire */
585 return 1;
586 }
587
ata_drive_40wire_relaxed(const u16 * dev_id)588 static inline int ata_drive_40wire_relaxed(const u16 *dev_id)
589 {
590 if ((dev_id[93] & 0x2000) == 0x2000)
591 return 0; /* 80 wire */
592 return 1;
593 }
594
atapi_cdb_len(const u16 * dev_id)595 static inline int atapi_cdb_len(const u16 *dev_id)
596 {
597 u16 tmp = dev_id[0] & 0x3;
598 switch (tmp) {
599 case 0: return 12;
600 case 1: return 16;
601 default: return -1;
602 }
603 }
604
atapi_command_packet_set(const u16 * dev_id)605 static inline int atapi_command_packet_set(const u16 *dev_id)
606 {
607 return (dev_id[0] >> 8) & 0x1f;
608 }
609
atapi_id_dmadir(const u16 * dev_id)610 static inline int atapi_id_dmadir(const u16 *dev_id)
611 {
612 return ata_id_major_version(dev_id) >= 7 && (dev_id[62] & 0x8000);
613 }
614
is_multi_taskfile(struct ata_taskfile * tf)615 static inline int is_multi_taskfile(struct ata_taskfile *tf)
616 {
617 return (tf->command == ATA_CMD_READ_MULTI) ||
618 (tf->command == ATA_CMD_WRITE_MULTI) ||
619 (tf->command == ATA_CMD_READ_MULTI_EXT) ||
620 (tf->command == ATA_CMD_WRITE_MULTI_EXT) ||
621 (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT);
622 }
623
ata_ok(u8 status)624 static inline int ata_ok(u8 status)
625 {
626 return ((status & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ | ATA_ERR))
627 == ATA_DRDY);
628 }
629
lba_28_ok(u64 block,u32 n_block)630 static inline int lba_28_ok(u64 block, u32 n_block)
631 {
632 /* check the ending block number */
633 return ((block + n_block - 1) < ((u64)1 << 28)) && (n_block <= 256);
634 }
635
lba_48_ok(u64 block,u32 n_block)636 static inline int lba_48_ok(u64 block, u32 n_block)
637 {
638 /* check the ending block number */
639 return ((block + n_block - 1) < ((u64)1 << 48)) && (n_block <= 65536);
640 }
641
642 #define sata_pmp_gscr_vendor(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] & 0xffff)
643 #define sata_pmp_gscr_devid(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] >> 16)
644 #define sata_pmp_gscr_rev(gscr) (((gscr)[SATA_PMP_GSCR_REV] >> 8) & 0xff)
645 #define sata_pmp_gscr_ports(gscr) ((gscr)[SATA_PMP_GSCR_PORT_INFO] & 0xf)
646
647 u64 ata_id_n_sectors(u16 *id);
648 u32 ata_dev_classify(u32 sig);
649 void ata_id_c_string(const u16 *id, unsigned char *s,
650 unsigned int ofs, unsigned int len);
651 void ata_dump_id(u16 *id);
652 void ata_swap_buf_le16(u16 *buf, unsigned int buf_words);
653
654 #endif /* __LIBATA_H__ */
655