blob: 62a17609a8e45e4fa86dc291370d2d539af6e40a [file] [log] [blame]
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 *
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.
12 *
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.
17 *
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,
21 * MA 02111-1307 USA
22 *
23 */
24
25#ifndef __LIBATA_H__
26#define __LIBATA_H__
27
28#include <common.h>
29
Dave Liuffc664e2008-03-26 22:51:44 +080030enum {
Dave Liu24b44842008-04-01 15:22:11 +080031 /* various global constants */
32 ATA_MAX_DEVICES = 2, /* per bus/port */
33 ATA_MAX_PRD = 256, /* we could make these 256/256 */
Dave Liuffc664e2008-03-26 22:51:44 +080034 ATA_SECT_SIZE = 512,
35 ATA_MAX_SECTORS_128 = 128,
36 ATA_MAX_SECTORS = 256,
37 ATA_MAX_SECTORS_LBA48 = 65535,
Dave Liu24b44842008-04-01 15:22:11 +080038 ATA_MAX_SECTORS_TAPE = 65535,
Dave Liuffc664e2008-03-26 22:51:44 +080039
40 ATA_ID_WORDS = 256,
41 ATA_ID_SERNO = 10,
42 ATA_ID_FW_REV = 23,
43 ATA_ID_PROD = 27,
Dave Liu24b44842008-04-01 15:22:11 +080044 ATA_ID_OLD_PIO_MODES = 51,
Dave Liuffc664e2008-03-26 22:51:44 +080045 ATA_ID_FIELD_VALID = 53,
46 ATA_ID_LBA_SECTORS = 60,
47 ATA_ID_MWDMA_MODES = 63,
48 ATA_ID_PIO_MODES = 64,
Dave Liu24b44842008-04-01 15:22:11 +080049 ATA_ID_EIDE_DMA_MIN = 65,
50 ATA_ID_EIDE_PIO = 67,
51 ATA_ID_EIDE_PIO_IORDY = 68,
52 ATA_ID_PIO4 = (1 << 1),
Dave Liuffc664e2008-03-26 22:51:44 +080053 ATA_ID_QUEUE_DEPTH = 75,
54 ATA_ID_SATA_CAP = 76,
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,
61
62 ATA_ID_SERNO_LEN = 20,
63 ATA_ID_FW_REV_LEN = 8,
64 ATA_ID_PROD_LEN = 40,
65
Dave Liu24b44842008-04-01 15:22:11 +080066 ATA_PCI_CTL_OFS = 2,
67
68 ATA_PIO0 = (1 << 0),
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),
75
76 ATA_SWDMA0 = (1 << 0),
77 ATA_SWDMA1 = ATA_SWDMA0 | (1 << 1),
78 ATA_SWDMA2 = ATA_SWDMA1 | (1 << 2),
79
80 ATA_SWDMA2_ONLY = (1 << 2),
81
82 ATA_MWDMA0 = (1 << 0),
83 ATA_MWDMA1 = ATA_MWDMA0 | (1 << 1),
84 ATA_MWDMA2 = ATA_MWDMA1 | (1 << 2),
85
86 ATA_MWDMA12_ONLY = (1 << 1) | (1 << 2),
87 ATA_MWDMA2_ONLY = (1 << 2),
Dave Liuffc664e2008-03-26 22:51:44 +080088
89 ATA_UDMA0 = (1 << 0),
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),
Dave Liu24b44842008-04-01 15:22:11 +080097 /* ATA_UDMA7 is just for completeness... doesn't exist (yet?). */
98
99 ATA_UDMA_MASK_40C = ATA_UDMA2, /* udma0-2 */
100
101 /* DMA-related */
102 ATA_PRD_SZ = 8,
103 ATA_PRD_TBL_SZ = (ATA_MAX_PRD * ATA_PRD_SZ),
104 ATA_PRD_EOT = (1 << 31), /* end-of-table flag */
105
106 ATA_DMA_TABLE_OFS = 4,
107 ATA_DMA_STATUS = 2,
108 ATA_DMA_CMD = 0,
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),
114
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 */
132
133 /* ATA command block registers */
134 ATA_REG_DATA = 0x00,
135 ATA_REG_ERR = 0x01,
136 ATA_REG_NSECT = 0x02,
137 ATA_REG_LBAL = 0x03,
138 ATA_REG_LBAM = 0x04,
139 ATA_REG_LBAH = 0x05,
140 ATA_REG_DEVICE = 0x06,
141 ATA_REG_STATUS = 0x07,
142
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,
149
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,
160 ATA_CMD_READ = 0xC8,
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,
194
195 /* READ_LOG_EXT pages */
196 ATA_LOG_SATA_NCQ = 0x10,
197
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,
203
204 /* SETFEATURES stuff */
205 SETFEATURES_XFER = 0x03,
206 XFER_UDMA_7 = 0x47,
207 XFER_UDMA_6 = 0x46,
208 XFER_UDMA_5 = 0x45,
209 XFER_UDMA_4 = 0x44,
210 XFER_UDMA_3 = 0x43,
211 XFER_UDMA_2 = 0x42,
212 XFER_UDMA_1 = 0x41,
213 XFER_UDMA_0 = 0x40,
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 */
224 XFER_PIO_4 = 0x0C,
225 XFER_PIO_3 = 0x0B,
226 XFER_PIO_2 = 0x0A,
227 XFER_PIO_1 = 0x09,
228 XFER_PIO_0 = 0x08,
229 XFER_PIO_SLOW = 0x00,
230
231 SETFEATURES_WC_ON = 0x02, /* Enable write cache */
232 SETFEATURES_WC_OFF = 0x82, /* Disable write cache */
233
234 SETFEATURES_SPINUP = 0x07, /* Spin-up drive */
235
236 SETFEATURES_SATA_ENABLE = 0x10, /* Enable use of SATA feature */
237 SETFEATURES_SATA_DISABLE = 0x90, /* Disable use of SATA feature */
238
239 /* SETFEATURE Sector counts for SATA features */
240 SATA_AN = 0x05, /* Asynchronous Notification */
241 SATA_DIPM = 0x03, /* Device Initiated Power Management */
242
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,
249
250 /* feature values for DEVICE CONFIGURATION OVERLAY */
251 ATA_DCO_RESTORE = 0xC0,
252 ATA_DCO_FREEZE_LOCK = 0xC1,
253 ATA_DCO_IDENTIFY = 0xC2,
254 ATA_DCO_SET = 0xC3,
255
256 /* ATAPI stuff */
257 ATAPI_PKT_DMA = (1 << 0),
258 ATAPI_DMADIR = (1 << 2), /* ATAPI data dir:
259 0=to device, 1=to host */
260 ATAPI_CDB_LEN = 16,
261
262 /* PMP stuff */
263 SATA_PMP_MAX_PORTS = 15,
264 SATA_PMP_CTRL_PORT = 15,
265
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,
274
275 SATA_PMP_PSCR_STATUS = 0,
276 SATA_PMP_PSCR_ERROR = 1,
277 SATA_PMP_PSCR_CONTROL = 2,
278
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),
283
284 /* cable types */
285 ATA_CBL_NONE = 0,
286 ATA_CBL_PATA40 = 1,
287 ATA_CBL_PATA80 = 2,
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 */
291 ATA_CBL_SATA = 6,
292
293 /* SATA Status and Control Registers */
294 SCR_STATUS = 0,
295 SCR_ERROR = 1,
296 SCR_CONTROL = 2,
297 SCR_ACTIVE = 3,
298 SCR_NOTIFICATION = 4,
299
300 /* SError bits */
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 */
318
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 */
327
328 /* protocol flags */
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 */
Dave Liuffc664e2008-03-26 22:51:44 +0800334};
335
Dave Liu24b44842008-04-01 15:22:11 +0800336enum 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 */
346};
347
348enum ata_ioctls {
349 ATA_IOC_GET_IO32 = 0x309,
350 ATA_IOC_SET_IO32 = 0x324,
351};
352
353enum ata_dev_typed {
354 ATA_DEV_ATA, /* ATA device */
355 ATA_DEV_ATAPI, /* ATAPI device */
356 ATA_DEV_PMP, /* Port Multiplier Port */
357 ATA_DEV_UNKNOWN, /* unknown */
358};
359
360struct ata_taskfile {
361 unsigned long flags; /* ATA_TFLAG_xxx */
362 u8 protocol; /* ATA_PROT_xxx */
363
364 u8 ctl; /* control reg */
365
366 u8 hob_feature; /* additional data */
367 u8 hob_nsect; /* to support LBA48 */
368 u8 hob_lbal;
369 u8 hob_lbam;
370 u8 hob_lbah;
371
372 u8 feature;
373 u8 nsect;
374 u8 lbal;
375 u8 lbam;
376 u8 lbah;
377
378 u8 device;
379
380 u8 command; /* IO operation */
381};
382
383/*
384 * protocol tests
385 */
386static inline unsigned int ata_prot_flags(u8 prot)
387{
388 switch (prot) {
389 case ATA_PROT_NODATA:
390 return 0;
391 case ATA_PROT_PIO:
392 return ATA_PROT_FLAG_PIO;
393 case ATA_PROT_DMA:
394 return ATA_PROT_FLAG_DMA;
395 case ATA_PROT_NCQ:
396 return ATA_PROT_FLAG_DMA | ATA_PROT_FLAG_NCQ;
397 case ATAPI_PROT_NODATA:
398 return ATA_PROT_FLAG_ATAPI;
399 case ATAPI_PROT_PIO:
400 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_PIO;
401 case ATAPI_PROT_DMA:
402 return ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_DMA;
403 }
404 return 0;
405}
406
407static inline int ata_is_atapi(u8 prot)
408{
409 return ata_prot_flags(prot) & ATA_PROT_FLAG_ATAPI;
410}
411
412static inline int ata_is_nodata(u8 prot)
413{
414 return !(ata_prot_flags(prot) & ATA_PROT_FLAG_DATA);
415}
416
417static inline int ata_is_pio(u8 prot)
418{
419 return ata_prot_flags(prot) & ATA_PROT_FLAG_PIO;
420}
421
422static inline int ata_is_dma(u8 prot)
423{
424 return ata_prot_flags(prot) & ATA_PROT_FLAG_DMA;
425}
426
427static inline int ata_is_ncq(u8 prot)
428{
429 return ata_prot_flags(prot) & ATA_PROT_FLAG_NCQ;
430}
431
432static inline int ata_is_data(u8 prot)
433{
434 return ata_prot_flags(prot) & ATA_PROT_FLAG_DATA;
435}
436
437/*
438 * id tests
439 */
Dave Liuffc664e2008-03-26 22:51:44 +0800440#define ata_id_is_ata(id) (((id)[0] & (1 << 15)) == 0)
Dave Liuffc664e2008-03-26 22:51:44 +0800441#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)
Dave Liu24b44842008-04-01 15:22:11 +0800445#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))
Dave Liuffc664e2008-03-26 22:51:44 +0800448
Wolfgang Denkd049cc72008-03-27 00:03:57 +0100449#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]) )
Dave Liuffc664e2008-03-26 22:51:44 +0800456
Dave Liu24b44842008-04-01 15:22:11 +0800457#define ata_id_cdb_intr(id) (((id)[0] & 0x60) == 0x20)
458
459static inline int ata_id_has_fua(const u16 *id)
460{
461 if ((id[84] & 0xC000) != 0x4000)
462 return 0;
463 return id[84] & (1 << 6);
464}
465
466static inline int ata_id_has_flush(const u16 *id)
467{
468 if ((id[83] & 0xC000) != 0x4000)
469 return 0;
470 return id[83] & (1 << 12);
471}
472
473static inline int ata_id_has_flush_ext(const u16 *id)
474{
475 if ((id[83] & 0xC000) != 0x4000)
476 return 0;
477 return id[83] & (1 << 13);
478}
479
480static inline int ata_id_has_lba48(const u16 *id)
481{
482 if ((id[83] & 0xC000) != 0x4000)
483 return 0;
484 if (!ata_id_u64(id, 100))
485 return 0;
486 return id[83] & (1 << 10);
487}
488
489static inline int ata_id_hpa_enabled(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 /* And 87 covers 85-87 */
495 if ((id[87] & 0xC000) != 0x4000)
496 return 0;
497 /* Check command sets enabled as well as supported */
498 if ((id[85] & ( 1 << 10)) == 0)
499 return 0;
500 return id[82] & (1 << 10);
501}
502
503static inline int ata_id_has_wcache(const u16 *id)
504{
505 /* Yes children, word 83 valid bits cover word 82 data */
506 if ((id[83] & 0xC000) != 0x4000)
507 return 0;
508 return id[82] & (1 << 5);
509}
510
511static inline int ata_id_has_pm(const u16 *id)
512{
513 if ((id[83] & 0xC000) != 0x4000)
514 return 0;
515 return id[82] & (1 << 3);
516}
517
518static inline int ata_id_rahead_enabled(const u16 *id)
519{
520 if ((id[87] & 0xC000) != 0x4000)
521 return 0;
522 return id[85] & (1 << 6);
523}
524
525static inline int ata_id_wcache_enabled(const u16 *id)
526{
527 if ((id[87] & 0xC000) != 0x4000)
528 return 0;
529 return id[85] & (1 << 5);
530}
Dave Liuffc664e2008-03-26 22:51:44 +0800531
532static inline unsigned int ata_id_major_version(const u16 *id)
533{
534 unsigned int mver;
535
536 if (id[ATA_ID_MAJOR_VER] == 0xFFFF)
537 return 0;
538
539 for (mver = 14; mver >= 1; mver--)
540 if (id[ATA_ID_MAJOR_VER] & (1 << mver))
541 break;
542 return mver;
543}
544
545static inline int ata_id_is_sata(const u16 *id)
546{
547 return ata_id_major_version(id) >= 5 && id[93] == 0;
548}
549
Dave Liu24b44842008-04-01 15:22:11 +0800550static inline int ata_id_has_tpm(const u16 *id)
551{
552 /* The TPM bits are only valid on ATA8 */
553 if (ata_id_major_version(id) < 8)
554 return 0;
555 if ((id[48] & 0xC000) != 0x4000)
556 return 0;
557 return id[48] & (1 << 0);
558}
559
560static inline int ata_id_has_dword_io(const u16 *id)
561{
562 /* ATA 8 reuses this flag for "trusted" computing */
563 if (ata_id_major_version(id) > 7)
564 return 0;
565 if (id[48] & (1 << 0))
566 return 1;
567 return 0;
568}
569
570static inline int ata_id_current_chs_valid(const u16 *id)
571{
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 */
578 id[55] <= 16 &&
579 id[56]; /* sectors in current translation */
580}
581
582static inline int ata_id_is_cfa(const u16 *id)
583{
584 u16 v = id[0];
585 if (v == 0x848A) /* Standard CF */
586 return 1;
587 /* Could be CF hiding as standard ATA */
588 if (ata_id_major_version(id) >= 3 && id[82] != 0xFFFF &&
589 (id[82] & ( 1 << 2)))
590 return 1;
591 return 0;
592}
593
594static inline int ata_drive_40wire(const u16 *dev_id)
595{
596 if (ata_id_is_sata(dev_id))
597 return 0; /* SATA */
598 if ((dev_id[93] & 0xE000) == 0x6000)
599 return 0; /* 80 wire */
600 return 1;
601}
602
603static inline int ata_drive_40wire_relaxed(const u16 *dev_id)
604{
605 if ((dev_id[93] & 0x2000) == 0x2000)
606 return 0; /* 80 wire */
607 return 1;
608}
609
610static inline int atapi_cdb_len(const u16 *dev_id)
611{
612 u16 tmp = dev_id[0] & 0x3;
613 switch (tmp) {
614 case 0: return 12;
615 case 1: return 16;
616 default: return -1;
617 }
618}
619
620static inline int atapi_command_packet_set(const u16 *dev_id)
621{
622 return (dev_id[0] >> 8) & 0x1f;
623}
624
625static inline int atapi_id_dmadir(const u16 *dev_id)
626{
627 return ata_id_major_version(dev_id) >= 7 && (dev_id[62] & 0x8000);
628}
629
630static inline int is_multi_taskfile(struct ata_taskfile *tf)
631{
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);
637}
638
639static inline int ata_ok(u8 status)
640{
641 return ((status & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ | ATA_ERR))
642 == ATA_DRDY);
643}
644
645static inline int lba_28_ok(u64 block, u32 n_block)
646{
647 /* check the ending block number */
648 return ((block + n_block - 1) < ((u64)1 << 28)) && (n_block <= 256);
649}
650
651static inline int lba_48_ok(u64 block, u32 n_block)
652{
653 /* check the ending block number */
654 return ((block + n_block - 1) < ((u64)1 << 48)) && (n_block <= 65536);
655}
656
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)
661
Dave Liuffc664e2008-03-26 22:51:44 +0800662u64 ata_id_n_sectors(u16 *id);
663u32 ata_dev_classify(u32 sig);
664void ata_id_c_string(const u16 *id, unsigned char *s,
665 unsigned int ofs, unsigned int len);
666void ata_dump_id(u16 *id);
667void ata_swap_buf_le16(u16 *buf, unsigned int buf_words);
668
669#endif /* __LIBATA_H__ */