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Dave Liuffc664e2008-03-26 22:51:44 +08001/*
Dave Liu24b44842008-04-01 15:22:11 +08002 * Copyright 2003-2004 Red Hat, Inc. All rights reserved.
3 * Copyright 2003-2004 Jeff Garzik
Dave Liuffc664e2008-03-26 22:51:44 +08004 * Copyright (C) 2008 Freescale Semiconductor, Inc.
5 * Dave Liu <daveliu@freescale.com>
6 * port from libata of linux kernel
7 *
Wolfgang Denk1a459662013-07-08 09:37:19 +02008 * SPDX-License-Identifier: GPL-2.0+
Dave Liuffc664e2008-03-26 22:51:44 +08009 */
10
11#ifndef __LIBATA_H__
12#define __LIBATA_H__
13
14#include <common.h>
15
Dave Liuffc664e2008-03-26 22:51:44 +080016enum {
Dave Liu24b44842008-04-01 15:22:11 +080017 /* various global constants */
18 ATA_MAX_DEVICES = 2, /* per bus/port */
19 ATA_MAX_PRD = 256, /* we could make these 256/256 */
Dave Liuffc664e2008-03-26 22:51:44 +080020 ATA_SECT_SIZE = 512,
21 ATA_MAX_SECTORS_128 = 128,
22 ATA_MAX_SECTORS = 256,
23 ATA_MAX_SECTORS_LBA48 = 65535,
Dave Liu24b44842008-04-01 15:22:11 +080024 ATA_MAX_SECTORS_TAPE = 65535,
Dave Liuffc664e2008-03-26 22:51:44 +080025
26 ATA_ID_WORDS = 256,
27 ATA_ID_SERNO = 10,
28 ATA_ID_FW_REV = 23,
29 ATA_ID_PROD = 27,
Dave Liu24b44842008-04-01 15:22:11 +080030 ATA_ID_OLD_PIO_MODES = 51,
Dave Liuffc664e2008-03-26 22:51:44 +080031 ATA_ID_FIELD_VALID = 53,
32 ATA_ID_LBA_SECTORS = 60,
33 ATA_ID_MWDMA_MODES = 63,
34 ATA_ID_PIO_MODES = 64,
Dave Liu24b44842008-04-01 15:22:11 +080035 ATA_ID_EIDE_DMA_MIN = 65,
36 ATA_ID_EIDE_PIO = 67,
37 ATA_ID_EIDE_PIO_IORDY = 68,
38 ATA_ID_PIO4 = (1 << 1),
Dave Liuffc664e2008-03-26 22:51:44 +080039 ATA_ID_QUEUE_DEPTH = 75,
40 ATA_ID_SATA_CAP = 76,
41 ATA_ID_SATA_FEATURES = 78,
42 ATA_ID_SATA_FEATURES_EN = 79,
43 ATA_ID_MAJOR_VER = 80,
44 ATA_ID_MINOR_VER = 81,
45 ATA_ID_UDMA_MODES = 88,
46 ATA_ID_LBA48_SECTORS = 100,
47
48 ATA_ID_SERNO_LEN = 20,
49 ATA_ID_FW_REV_LEN = 8,
50 ATA_ID_PROD_LEN = 40,
51
Dave Liu24b44842008-04-01 15:22:11 +080052 ATA_PCI_CTL_OFS = 2,
53
54 ATA_PIO0 = (1 << 0),
55 ATA_PIO1 = ATA_PIO0 | (1 << 1),
56 ATA_PIO2 = ATA_PIO1 | (1 << 2),
57 ATA_PIO3 = ATA_PIO2 | (1 << 3),
58 ATA_PIO4 = ATA_PIO3 | (1 << 4),
59 ATA_PIO5 = ATA_PIO4 | (1 << 5),
60 ATA_PIO6 = ATA_PIO5 | (1 << 6),
61
62 ATA_SWDMA0 = (1 << 0),
63 ATA_SWDMA1 = ATA_SWDMA0 | (1 << 1),
64 ATA_SWDMA2 = ATA_SWDMA1 | (1 << 2),
65
66 ATA_SWDMA2_ONLY = (1 << 2),
67
68 ATA_MWDMA0 = (1 << 0),
69 ATA_MWDMA1 = ATA_MWDMA0 | (1 << 1),
70 ATA_MWDMA2 = ATA_MWDMA1 | (1 << 2),
71
72 ATA_MWDMA12_ONLY = (1 << 1) | (1 << 2),
73 ATA_MWDMA2_ONLY = (1 << 2),
Dave Liuffc664e2008-03-26 22:51:44 +080074
75 ATA_UDMA0 = (1 << 0),
76 ATA_UDMA1 = ATA_UDMA0 | (1 << 1),
77 ATA_UDMA2 = ATA_UDMA1 | (1 << 2),
78 ATA_UDMA3 = ATA_UDMA2 | (1 << 3),
79 ATA_UDMA4 = ATA_UDMA3 | (1 << 4),
80 ATA_UDMA5 = ATA_UDMA4 | (1 << 5),
81 ATA_UDMA6 = ATA_UDMA5 | (1 << 6),
82 ATA_UDMA7 = ATA_UDMA6 | (1 << 7),
Dave Liu24b44842008-04-01 15:22:11 +080083 /* ATA_UDMA7 is just for completeness... doesn't exist (yet?). */
84
85 ATA_UDMA_MASK_40C = ATA_UDMA2, /* udma0-2 */
86
87 /* DMA-related */
88 ATA_PRD_SZ = 8,
89 ATA_PRD_TBL_SZ = (ATA_MAX_PRD * ATA_PRD_SZ),
90 ATA_PRD_EOT = (1 << 31), /* end-of-table flag */
91
92 ATA_DMA_TABLE_OFS = 4,
93 ATA_DMA_STATUS = 2,
94 ATA_DMA_CMD = 0,
95 ATA_DMA_WR = (1 << 3),
96 ATA_DMA_START = (1 << 0),
97 ATA_DMA_INTR = (1 << 2),
98 ATA_DMA_ERR = (1 << 1),
99 ATA_DMA_ACTIVE = (1 << 0),
100
101 /* bits in ATA command block registers */
102 ATA_HOB = (1 << 7), /* LBA48 selector */
103 ATA_NIEN = (1 << 1), /* disable-irq flag */
104 ATA_LBA = (1 << 6), /* LBA28 selector */
105 ATA_DEV1 = (1 << 4), /* Select Device 1 (slave) */
106 ATA_DEVICE_OBS = (1 << 7) | (1 << 5), /* obs bits in dev reg */
107 ATA_DEVCTL_OBS = (1 << 3), /* obsolete bit in devctl reg */
108 ATA_BUSY = (1 << 7), /* BSY status bit */
109 ATA_DRDY = (1 << 6), /* device ready */
110 ATA_DF = (1 << 5), /* device fault */
111 ATA_DRQ = (1 << 3), /* data request i/o */
112 ATA_ERR = (1 << 0), /* have an error */
113 ATA_SRST = (1 << 2), /* software reset */
114 ATA_ICRC = (1 << 7), /* interface CRC error */
115 ATA_UNC = (1 << 6), /* uncorrectable media error */
116 ATA_IDNF = (1 << 4), /* ID not found */
117 ATA_ABORTED = (1 << 2), /* command aborted */
118
119 /* ATA command block registers */
120 ATA_REG_DATA = 0x00,
121 ATA_REG_ERR = 0x01,
122 ATA_REG_NSECT = 0x02,
123 ATA_REG_LBAL = 0x03,
124 ATA_REG_LBAM = 0x04,
125 ATA_REG_LBAH = 0x05,
126 ATA_REG_DEVICE = 0x06,
127 ATA_REG_STATUS = 0x07,
128
129 ATA_REG_FEATURE = ATA_REG_ERR, /* and their aliases */
130 ATA_REG_CMD = ATA_REG_STATUS,
131 ATA_REG_BYTEL = ATA_REG_LBAM,
132 ATA_REG_BYTEH = ATA_REG_LBAH,
133 ATA_REG_DEVSEL = ATA_REG_DEVICE,
134 ATA_REG_IRQ = ATA_REG_NSECT,
135
136 /* ATA device commands */
137 ATA_CMD_DEV_RESET = 0x08, /* ATAPI device reset */
138 ATA_CMD_CHK_POWER = 0xE5, /* check power mode */
139 ATA_CMD_STANDBY = 0xE2, /* place in standby power mode */
140 ATA_CMD_IDLE = 0xE3, /* place in idle power mode */
141 ATA_CMD_EDD = 0x90, /* execute device diagnostic */
142 ATA_CMD_FLUSH = 0xE7,
143 ATA_CMD_FLUSH_EXT = 0xEA,
144 ATA_CMD_ID_ATA = 0xEC,
145 ATA_CMD_ID_ATAPI = 0xA1,
146 ATA_CMD_READ = 0xC8,
147 ATA_CMD_READ_EXT = 0x25,
148 ATA_CMD_WRITE = 0xCA,
149 ATA_CMD_WRITE_EXT = 0x35,
150 ATA_CMD_WRITE_FUA_EXT = 0x3D,
151 ATA_CMD_FPDMA_READ = 0x60,
152 ATA_CMD_FPDMA_WRITE = 0x61,
153 ATA_CMD_PIO_READ = 0x20,
154 ATA_CMD_PIO_READ_EXT = 0x24,
155 ATA_CMD_PIO_WRITE = 0x30,
156 ATA_CMD_PIO_WRITE_EXT = 0x34,
157 ATA_CMD_READ_MULTI = 0xC4,
158 ATA_CMD_READ_MULTI_EXT = 0x29,
159 ATA_CMD_WRITE_MULTI = 0xC5,
160 ATA_CMD_WRITE_MULTI_EXT = 0x39,
161 ATA_CMD_WRITE_MULTI_FUA_EXT = 0xCE,
162 ATA_CMD_SET_FEATURES = 0xEF,
163 ATA_CMD_SET_MULTI = 0xC6,
164 ATA_CMD_PACKET = 0xA0,
165 ATA_CMD_VERIFY = 0x40,
166 ATA_CMD_VERIFY_EXT = 0x42,
167 ATA_CMD_STANDBYNOW1 = 0xE0,
168 ATA_CMD_IDLEIMMEDIATE = 0xE1,
169 ATA_CMD_SLEEP = 0xE6,
170 ATA_CMD_INIT_DEV_PARAMS = 0x91,
171 ATA_CMD_READ_NATIVE_MAX = 0xF8,
172 ATA_CMD_READ_NATIVE_MAX_EXT = 0x27,
173 ATA_CMD_SET_MAX = 0xF9,
174 ATA_CMD_SET_MAX_EXT = 0x37,
175 ATA_CMD_READ_LOG_EXT = 0x2f,
176 ATA_CMD_PMP_READ = 0xE4,
177 ATA_CMD_PMP_WRITE = 0xE8,
178 ATA_CMD_CONF_OVERLAY = 0xB1,
179 ATA_CMD_SEC_FREEZE_LOCK = 0xF5,
180
181 /* READ_LOG_EXT pages */
182 ATA_LOG_SATA_NCQ = 0x10,
183
184 /* READ/WRITE LONG (obsolete) */
185 ATA_CMD_READ_LONG = 0x22,
186 ATA_CMD_READ_LONG_ONCE = 0x23,
187 ATA_CMD_WRITE_LONG = 0x32,
188 ATA_CMD_WRITE_LONG_ONCE = 0x33,
189
190 /* SETFEATURES stuff */
191 SETFEATURES_XFER = 0x03,
192 XFER_UDMA_7 = 0x47,
193 XFER_UDMA_6 = 0x46,
194 XFER_UDMA_5 = 0x45,
195 XFER_UDMA_4 = 0x44,
196 XFER_UDMA_3 = 0x43,
197 XFER_UDMA_2 = 0x42,
198 XFER_UDMA_1 = 0x41,
199 XFER_UDMA_0 = 0x40,
200 XFER_MW_DMA_4 = 0x24, /* CFA only */
201 XFER_MW_DMA_3 = 0x23, /* CFA only */
202 XFER_MW_DMA_2 = 0x22,
203 XFER_MW_DMA_1 = 0x21,
204 XFER_MW_DMA_0 = 0x20,
205 XFER_SW_DMA_2 = 0x12,
206 XFER_SW_DMA_1 = 0x11,
207 XFER_SW_DMA_0 = 0x10,
208 XFER_PIO_6 = 0x0E, /* CFA only */
209 XFER_PIO_5 = 0x0D, /* CFA only */
210 XFER_PIO_4 = 0x0C,
211 XFER_PIO_3 = 0x0B,
212 XFER_PIO_2 = 0x0A,
213 XFER_PIO_1 = 0x09,
214 XFER_PIO_0 = 0x08,
215 XFER_PIO_SLOW = 0x00,
216
217 SETFEATURES_WC_ON = 0x02, /* Enable write cache */
218 SETFEATURES_WC_OFF = 0x82, /* Disable write cache */
219
220 SETFEATURES_SPINUP = 0x07, /* Spin-up drive */
221
222 SETFEATURES_SATA_ENABLE = 0x10, /* Enable use of SATA feature */
223 SETFEATURES_SATA_DISABLE = 0x90, /* Disable use of SATA feature */
224
225 /* SETFEATURE Sector counts for SATA features */
226 SATA_AN = 0x05, /* Asynchronous Notification */
227 SATA_DIPM = 0x03, /* Device Initiated Power Management */
228
229 /* feature values for SET_MAX */
230 ATA_SET_MAX_ADDR = 0x00,
231 ATA_SET_MAX_PASSWD = 0x01,
232 ATA_SET_MAX_LOCK = 0x02,
233 ATA_SET_MAX_UNLOCK = 0x03,
234 ATA_SET_MAX_FREEZE_LOCK = 0x04,
235
236 /* feature values for DEVICE CONFIGURATION OVERLAY */
237 ATA_DCO_RESTORE = 0xC0,
238 ATA_DCO_FREEZE_LOCK = 0xC1,
239 ATA_DCO_IDENTIFY = 0xC2,
240 ATA_DCO_SET = 0xC3,
241
242 /* ATAPI stuff */
243 ATAPI_PKT_DMA = (1 << 0),
244 ATAPI_DMADIR = (1 << 2), /* ATAPI data dir:
245 0=to device, 1=to host */
246 ATAPI_CDB_LEN = 16,
247
248 /* PMP stuff */
249 SATA_PMP_MAX_PORTS = 15,
250 SATA_PMP_CTRL_PORT = 15,
251
252 SATA_PMP_GSCR_DWORDS = 128,
253 SATA_PMP_GSCR_PROD_ID = 0,
254 SATA_PMP_GSCR_REV = 1,
255 SATA_PMP_GSCR_PORT_INFO = 2,
256 SATA_PMP_GSCR_ERROR = 32,
257 SATA_PMP_GSCR_ERROR_EN = 33,
258 SATA_PMP_GSCR_FEAT = 64,
259 SATA_PMP_GSCR_FEAT_EN = 96,
260
261 SATA_PMP_PSCR_STATUS = 0,
262 SATA_PMP_PSCR_ERROR = 1,
263 SATA_PMP_PSCR_CONTROL = 2,
264
265 SATA_PMP_FEAT_BIST = (1 << 0),
266 SATA_PMP_FEAT_PMREQ = (1 << 1),
267 SATA_PMP_FEAT_DYNSSC = (1 << 2),
268 SATA_PMP_FEAT_NOTIFY = (1 << 3),
269
270 /* cable types */
271 ATA_CBL_NONE = 0,
272 ATA_CBL_PATA40 = 1,
273 ATA_CBL_PATA80 = 2,
274 ATA_CBL_PATA40_SHORT = 3, /* 40 wire cable to high UDMA spec */
275 ATA_CBL_PATA_UNK = 4, /* don't know, maybe 80c? */
276 ATA_CBL_PATA_IGN = 5, /* don't know, ignore cable handling */
277 ATA_CBL_SATA = 6,
278
279 /* SATA Status and Control Registers */
280 SCR_STATUS = 0,
281 SCR_ERROR = 1,
282 SCR_CONTROL = 2,
283 SCR_ACTIVE = 3,
284 SCR_NOTIFICATION = 4,
285
286 /* SError bits */
287 SERR_DATA_RECOVERED = (1 << 0), /* recovered data error */
288 SERR_COMM_RECOVERED = (1 << 1), /* recovered comm failure */
289 SERR_DATA = (1 << 8), /* unrecovered data error */
290 SERR_PERSISTENT = (1 << 9), /* persistent data/comm error */
291 SERR_PROTOCOL = (1 << 10), /* protocol violation */
292 SERR_INTERNAL = (1 << 11), /* host internal error */
293 SERR_PHYRDY_CHG = (1 << 16), /* PHY RDY changed */
294 SERR_PHY_INT_ERR = (1 << 17), /* PHY internal error */
295 SERR_COMM_WAKE = (1 << 18), /* Comm wake */
296 SERR_10B_8B_ERR = (1 << 19), /* 10b to 8b decode error */
297 SERR_DISPARITY = (1 << 20), /* Disparity */
298 SERR_CRC = (1 << 21), /* CRC error */
299 SERR_HANDSHAKE = (1 << 22), /* Handshake error */
300 SERR_LINK_SEQ_ERR = (1 << 23), /* Link sequence error */
301 SERR_TRANS_ST_ERROR = (1 << 24), /* Transport state trans. error */
302 SERR_UNRECOG_FIS = (1 << 25), /* Unrecognized FIS */
303 SERR_DEV_XCHG = (1 << 26), /* device exchanged */
304
305 /* struct ata_taskfile flags */
306 ATA_TFLAG_LBA48 = (1 << 0), /* enable 48-bit LBA and "HOB" */
307 ATA_TFLAG_ISADDR = (1 << 1), /* enable r/w to nsect/lba regs */
308 ATA_TFLAG_DEVICE = (1 << 2), /* enable r/w to device reg */
309 ATA_TFLAG_WRITE = (1 << 3), /* data dir: host->dev==1 (write) */
310 ATA_TFLAG_LBA = (1 << 4), /* enable LBA */
311 ATA_TFLAG_FUA = (1 << 5), /* enable FUA */
312 ATA_TFLAG_POLLING = (1 << 6), /* set nIEN to 1 and use polling */
313
314 /* protocol flags */
315 ATA_PROT_FLAG_PIO = (1 << 0), /* is PIO */
316 ATA_PROT_FLAG_DMA = (1 << 1), /* is DMA */
317 ATA_PROT_FLAG_DATA = ATA_PROT_FLAG_PIO | ATA_PROT_FLAG_DMA,
318 ATA_PROT_FLAG_NCQ = (1 << 2), /* is NCQ */
319 ATA_PROT_FLAG_ATAPI = (1 << 3), /* is ATAPI */
Dave Liuffc664e2008-03-26 22:51:44 +0800320};
321
Dave Liu24b44842008-04-01 15:22:11 +0800322enum ata_tf_protocols {
323 /* ATA taskfile protocols */
324 ATA_PROT_UNKNOWN, /* unknown/invalid */
325 ATA_PROT_NODATA, /* no data */
326 ATA_PROT_PIO, /* PIO data xfer */
327 ATA_PROT_DMA, /* DMA */
328 ATA_PROT_NCQ, /* NCQ */
329 ATAPI_PROT_NODATA, /* packet command, no data */
330 ATAPI_PROT_PIO, /* packet command, PIO data xfer*/
331 ATAPI_PROT_DMA, /* packet command with special DMA sauce */
332};
333
334enum ata_ioctls {
335 ATA_IOC_GET_IO32 = 0x309,
336 ATA_IOC_SET_IO32 = 0x324,
337};
338
339enum ata_dev_typed {
340 ATA_DEV_ATA, /* ATA device */
341 ATA_DEV_ATAPI, /* ATAPI device */
342 ATA_DEV_PMP, /* Port Multiplier Port */
343 ATA_DEV_UNKNOWN, /* unknown */
344};
345
346struct ata_taskfile {
347 unsigned long flags; /* ATA_TFLAG_xxx */
348 u8 protocol; /* ATA_PROT_xxx */
349
350 u8 ctl; /* control reg */
351
352 u8 hob_feature; /* additional data */
353 u8 hob_nsect; /* to support LBA48 */
354 u8 hob_lbal;
355 u8 hob_lbam;
356 u8 hob_lbah;
357
358 u8 feature;
359 u8 nsect;
360 u8 lbal;
361 u8 lbam;
362 u8 lbah;
363
364 u8 device;
365
366 u8 command; /* IO operation */
367};
368
369/*
370 * protocol tests
371 */
372static inline unsigned int ata_prot_flags(u8 prot)
373{
374 switch (prot) {
375 case ATA_PROT_NODATA:
376 return 0;
377 case ATA_PROT_PIO:
378 return ATA_PROT_FLAG_PIO;
379 case ATA_PROT_DMA:
380 return ATA_PROT_FLAG_DMA;
381 case ATA_PROT_NCQ:
382 return ATA_PROT_FLAG_DMA | ATA_PROT_FLAG_NCQ;
383 case ATAPI_PROT_NODATA:
384 return ATA_PROT_FLAG_ATAPI;
385 case ATAPI_PROT_PIO:
386 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_PIO;
387 case ATAPI_PROT_DMA:
388 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_DMA;
389 }
390 return 0;
391}
392
393static inline int ata_is_atapi(u8 prot)
394{
395 return ata_prot_flags(prot) & ATA_PROT_FLAG_ATAPI;
396}
397
398static inline int ata_is_nodata(u8 prot)
399{
400 return !(ata_prot_flags(prot) & ATA_PROT_FLAG_DATA);
401}
402
403static inline int ata_is_pio(u8 prot)
404{
405 return ata_prot_flags(prot) & ATA_PROT_FLAG_PIO;
406}
407
408static inline int ata_is_dma(u8 prot)
409{
410 return ata_prot_flags(prot) & ATA_PROT_FLAG_DMA;
411}
412
413static inline int ata_is_ncq(u8 prot)
414{
415 return ata_prot_flags(prot) & ATA_PROT_FLAG_NCQ;
416}
417
418static inline int ata_is_data(u8 prot)
419{
420 return ata_prot_flags(prot) & ATA_PROT_FLAG_DATA;
421}
422
423/*
424 * id tests
425 */
Dave Liuffc664e2008-03-26 22:51:44 +0800426#define ata_id_is_ata(id) (((id)[0] & (1 << 15)) == 0)
Dave Liuffc664e2008-03-26 22:51:44 +0800427#define ata_id_has_lba(id) ((id)[49] & (1 << 9))
428#define ata_id_has_dma(id) ((id)[49] & (1 << 8))
429#define ata_id_has_ncq(id) ((id)[76] & (1 << 8))
430#define ata_id_queue_depth(id) (((id)[75] & 0x1f) + 1)
Dave Liu24b44842008-04-01 15:22:11 +0800431#define ata_id_removeable(id) ((id)[0] & (1 << 7))
432#define ata_id_iordy_disable(id) ((id)[49] & (1 << 10))
433#define ata_id_has_iordy(id) ((id)[49] & (1 << 11))
Dave Liuffc664e2008-03-26 22:51:44 +0800434
Wolfgang Denkd049cc72008-03-27 00:03:57 +0100435#define ata_id_u32(id,n) \
436 (((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)]))
437#define ata_id_u64(id,n) \
438 ( ((u64) (id)[(n) + 3] << 48) | \
439 ((u64) (id)[(n) + 2] << 32) | \
440 ((u64) (id)[(n) + 1] << 16) | \
441 ((u64) (id)[(n) + 0]) )
Dave Liuffc664e2008-03-26 22:51:44 +0800442
Dave Liu24b44842008-04-01 15:22:11 +0800443#define ata_id_cdb_intr(id) (((id)[0] & 0x60) == 0x20)
444
445static inline int ata_id_has_fua(const u16 *id)
446{
447 if ((id[84] & 0xC000) != 0x4000)
448 return 0;
449 return id[84] & (1 << 6);
450}
451
452static inline int ata_id_has_flush(const u16 *id)
453{
454 if ((id[83] & 0xC000) != 0x4000)
455 return 0;
456 return id[83] & (1 << 12);
457}
458
459static inline int ata_id_has_flush_ext(const u16 *id)
460{
461 if ((id[83] & 0xC000) != 0x4000)
462 return 0;
463 return id[83] & (1 << 13);
464}
465
466static inline int ata_id_has_lba48(const u16 *id)
467{
468 if ((id[83] & 0xC000) != 0x4000)
469 return 0;
470 if (!ata_id_u64(id, 100))
471 return 0;
472 return id[83] & (1 << 10);
473}
474
475static inline int ata_id_hpa_enabled(const u16 *id)
476{
477 /* Yes children, word 83 valid bits cover word 82 data */
478 if ((id[83] & 0xC000) != 0x4000)
479 return 0;
480 /* And 87 covers 85-87 */
481 if ((id[87] & 0xC000) != 0x4000)
482 return 0;
483 /* Check command sets enabled as well as supported */
484 if ((id[85] & ( 1 << 10)) == 0)
485 return 0;
486 return id[82] & (1 << 10);
487}
488
489static inline int ata_id_has_wcache(const u16 *id)
490{
491 /* Yes children, word 83 valid bits cover word 82 data */
492 if ((id[83] & 0xC000) != 0x4000)
493 return 0;
494 return id[82] & (1 << 5);
495}
496
497static inline int ata_id_has_pm(const u16 *id)
498{
499 if ((id[83] & 0xC000) != 0x4000)
500 return 0;
501 return id[82] & (1 << 3);
502}
503
504static inline int ata_id_rahead_enabled(const u16 *id)
505{
506 if ((id[87] & 0xC000) != 0x4000)
507 return 0;
508 return id[85] & (1 << 6);
509}
510
511static inline int ata_id_wcache_enabled(const u16 *id)
512{
513 if ((id[87] & 0xC000) != 0x4000)
514 return 0;
515 return id[85] & (1 << 5);
516}
Dave Liuffc664e2008-03-26 22:51:44 +0800517
518static inline unsigned int ata_id_major_version(const u16 *id)
519{
520 unsigned int mver;
521
522 if (id[ATA_ID_MAJOR_VER] == 0xFFFF)
523 return 0;
524
525 for (mver = 14; mver >= 1; mver--)
526 if (id[ATA_ID_MAJOR_VER] & (1 << mver))
527 break;
528 return mver;
529}
530
531static inline int ata_id_is_sata(const u16 *id)
532{
533 return ata_id_major_version(id) >= 5 && id[93] == 0;
534}
535
Dave Liu24b44842008-04-01 15:22:11 +0800536static inline int ata_id_has_tpm(const u16 *id)
537{
538 /* The TPM bits are only valid on ATA8 */
539 if (ata_id_major_version(id) < 8)
540 return 0;
541 if ((id[48] & 0xC000) != 0x4000)
542 return 0;
543 return id[48] & (1 << 0);
544}
545
546static inline int ata_id_has_dword_io(const u16 *id)
547{
548 /* ATA 8 reuses this flag for "trusted" computing */
549 if (ata_id_major_version(id) > 7)
550 return 0;
551 if (id[48] & (1 << 0))
552 return 1;
553 return 0;
554}
555
556static inline int ata_id_current_chs_valid(const u16 *id)
557{
558 /* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command
559 has not been issued to the device then the values of
560 id[54] to id[56] are vendor specific. */
561 return (id[53] & 0x01) && /* Current translation valid */
562 id[54] && /* cylinders in current translation */
563 id[55] && /* heads in current translation */
564 id[55] <= 16 &&
565 id[56]; /* sectors in current translation */
566}
567
568static inline int ata_id_is_cfa(const u16 *id)
569{
570 u16 v = id[0];
571 if (v == 0x848A) /* Standard CF */
572 return 1;
573 /* Could be CF hiding as standard ATA */
574 if (ata_id_major_version(id) >= 3 && id[82] != 0xFFFF &&
575 (id[82] & ( 1 << 2)))
576 return 1;
577 return 0;
578}
579
580static inline int ata_drive_40wire(const u16 *dev_id)
581{
582 if (ata_id_is_sata(dev_id))
583 return 0; /* SATA */
584 if ((dev_id[93] & 0xE000) == 0x6000)
585 return 0; /* 80 wire */
586 return 1;
587}
588
589static inline int ata_drive_40wire_relaxed(const u16 *dev_id)
590{
591 if ((dev_id[93] & 0x2000) == 0x2000)
592 return 0; /* 80 wire */
593 return 1;
594}
595
596static inline int atapi_cdb_len(const u16 *dev_id)
597{
598 u16 tmp = dev_id[0] & 0x3;
599 switch (tmp) {
600 case 0: return 12;
601 case 1: return 16;
602 default: return -1;
603 }
604}
605
606static inline int atapi_command_packet_set(const u16 *dev_id)
607{
608 return (dev_id[0] >> 8) & 0x1f;
609}
610
611static inline int atapi_id_dmadir(const u16 *dev_id)
612{
613 return ata_id_major_version(dev_id) >= 7 && (dev_id[62] & 0x8000);
614}
615
616static inline int is_multi_taskfile(struct ata_taskfile *tf)
617{
618 return (tf->command == ATA_CMD_READ_MULTI) ||
619 (tf->command == ATA_CMD_WRITE_MULTI) ||
620 (tf->command == ATA_CMD_READ_MULTI_EXT) ||
621 (tf->command == ATA_CMD_WRITE_MULTI_EXT) ||
622 (tf->command == ATA_CMD_WRITE_MULTI_FUA_EXT);
623}
624
625static inline int ata_ok(u8 status)
626{
627 return ((status & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ | ATA_ERR))
628 == ATA_DRDY);
629}
630
631static inline int lba_28_ok(u64 block, u32 n_block)
632{
633 /* check the ending block number */
634 return ((block + n_block - 1) < ((u64)1 << 28)) && (n_block <= 256);
635}
636
637static inline int lba_48_ok(u64 block, u32 n_block)
638{
639 /* check the ending block number */
640 return ((block + n_block - 1) < ((u64)1 << 48)) && (n_block <= 65536);
641}
642
643#define sata_pmp_gscr_vendor(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] & 0xffff)
644#define sata_pmp_gscr_devid(gscr) ((gscr)[SATA_PMP_GSCR_PROD_ID] >> 16)
645#define sata_pmp_gscr_rev(gscr) (((gscr)[SATA_PMP_GSCR_REV] >> 8) & 0xff)
646#define sata_pmp_gscr_ports(gscr) ((gscr)[SATA_PMP_GSCR_PORT_INFO] & 0xf)
647
Dave Liuffc664e2008-03-26 22:51:44 +0800648u64 ata_id_n_sectors(u16 *id);
649u32 ata_dev_classify(u32 sig);
650void ata_id_c_string(const u16 *id, unsigned char *s,
651 unsigned int ofs, unsigned int len);
652void ata_dump_id(u16 *id);
653void ata_swap_buf_le16(u16 *buf, unsigned int buf_words);
654
655#endif /* __LIBATA_H__ */