1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 
3 /*
4  *  Copyright 2003-2004 Red Hat, Inc.  All rights reserved.
5  *  Copyright 2003-2004 Jeff Garzik
6  *
7  *  libata documentation is available via 'make {ps|pdf}docs',
8  *  as Documentation/driver-api/libata.rst
9  *
10  *  Hardware documentation available from http://www.t13.org/
11  */
12 
13 #ifndef __LINUX_ATA_H__
14 #define __LINUX_ATA_H__
15 
16 #include <linux/bits.h>
17 #include <linux/string.h>
18 #include <linux/types.h>
19 
20 /* defines only for the constants which don't work well as enums */
21 #define ATA_DMA_BOUNDARY	0xffffUL
22 #define ATA_DMA_MASK		0xffffffffULL
23 
24 enum {
25 	/* various global constants */
26 	ATA_MAX_DEVICES		= 2,	/* per bus/port */
27 	ATA_MAX_PRD		= 256,	/* we could make these 256/256 */
28 	ATA_SECT_SIZE		= 512,
29 	ATA_MAX_SECTORS_128	= 128,
30 	ATA_MAX_SECTORS		= 256,
31 	ATA_MAX_SECTORS_1024    = 1024,
32 	ATA_MAX_SECTORS_LBA48	= 65535,/* avoid count to be 0000h */
33 	ATA_MAX_SECTORS_TAPE	= 65535,
34 	ATA_MAX_TRIM_RNUM	= 64,	/* 512-byte payload / (6-byte LBA + 2-byte range per entry) */
35 
36 	ATA_ID_WORDS		= 256,
37 	ATA_ID_CONFIG		= 0,
38 	ATA_ID_CYLS		= 1,
39 	ATA_ID_HEADS		= 3,
40 	ATA_ID_SECTORS		= 6,
41 	ATA_ID_SERNO		= 10,
42 	ATA_ID_BUF_SIZE		= 21,
43 	ATA_ID_FW_REV		= 23,
44 	ATA_ID_PROD		= 27,
45 	ATA_ID_MAX_MULTSECT	= 47,
46 	ATA_ID_DWORD_IO		= 48,	/* before ATA-8 */
47 	ATA_ID_TRUSTED		= 48,	/* ATA-8 and later */
48 	ATA_ID_CAPABILITY	= 49,
49 	ATA_ID_OLD_PIO_MODES	= 51,
50 	ATA_ID_OLD_DMA_MODES	= 52,
51 	ATA_ID_FIELD_VALID	= 53,
52 	ATA_ID_CUR_CYLS		= 54,
53 	ATA_ID_CUR_HEADS	= 55,
54 	ATA_ID_CUR_SECTORS	= 56,
55 	ATA_ID_MULTSECT		= 59,
56 	ATA_ID_LBA_CAPACITY	= 60,
57 	ATA_ID_SWDMA_MODES	= 62,
58 	ATA_ID_MWDMA_MODES	= 63,
59 	ATA_ID_PIO_MODES	= 64,
60 	ATA_ID_EIDE_DMA_MIN	= 65,
61 	ATA_ID_EIDE_DMA_TIME	= 66,
62 	ATA_ID_EIDE_PIO		= 67,
63 	ATA_ID_EIDE_PIO_IORDY	= 68,
64 	ATA_ID_ADDITIONAL_SUPP	= 69,
65 	ATA_ID_QUEUE_DEPTH	= 75,
66 	ATA_ID_SATA_CAPABILITY	= 76,
67 	ATA_ID_SATA_CAPABILITY_2	= 77,
68 	ATA_ID_FEATURE_SUPP	= 78,
69 	ATA_ID_MAJOR_VER	= 80,
70 	ATA_ID_COMMAND_SET_1	= 82,
71 	ATA_ID_COMMAND_SET_2	= 83,
72 	ATA_ID_CFSSE		= 84,
73 	ATA_ID_CFS_ENABLE_1	= 85,
74 	ATA_ID_CFS_ENABLE_2	= 86,
75 	ATA_ID_CSF_DEFAULT	= 87,
76 	ATA_ID_UDMA_MODES	= 88,
77 	ATA_ID_HW_CONFIG	= 93,
78 	ATA_ID_SPG		= 98,
79 	ATA_ID_LBA_CAPACITY_2	= 100,
80 	ATA_ID_SECTOR_SIZE	= 106,
81 	ATA_ID_WWN		= 108,
82 	ATA_ID_LOGICAL_SECTOR_SIZE	= 117,	/* and 118 */
83 	ATA_ID_COMMAND_SET_3	= 119,
84 	ATA_ID_COMMAND_SET_4	= 120,
85 	ATA_ID_LAST_LUN		= 126,
86 	ATA_ID_DLF		= 128,
87 	ATA_ID_CSFO		= 129,
88 	ATA_ID_CFA_POWER	= 160,
89 	ATA_ID_CFA_KEY_MGMT	= 162,
90 	ATA_ID_CFA_MODES	= 163,
91 	ATA_ID_DATA_SET_MGMT	= 169,
92 	ATA_ID_SCT_CMD_XPORT	= 206,
93 	ATA_ID_ROT_SPEED	= 217,
94 	ATA_ID_PIO4		= (1 << 1),
95 
96 	ATA_ID_SERNO_LEN	= 20,
97 	ATA_ID_FW_REV_LEN	= 8,
98 	ATA_ID_PROD_LEN		= 40,
99 	ATA_ID_WWN_LEN		= 8,
100 
101 	ATA_PCI_CTL_OFS		= 2,
102 
103 	ATA_PIO0		= (1 << 0),
104 	ATA_PIO1		= ATA_PIO0 | (1 << 1),
105 	ATA_PIO2		= ATA_PIO1 | (1 << 2),
106 	ATA_PIO3		= ATA_PIO2 | (1 << 3),
107 	ATA_PIO4		= ATA_PIO3 | (1 << 4),
108 	ATA_PIO5		= ATA_PIO4 | (1 << 5),
109 	ATA_PIO6		= ATA_PIO5 | (1 << 6),
110 
111 	ATA_PIO4_ONLY		= (1 << 4),
112 
113 	ATA_SWDMA0		= (1 << 0),
114 	ATA_SWDMA1		= ATA_SWDMA0 | (1 << 1),
115 	ATA_SWDMA2		= ATA_SWDMA1 | (1 << 2),
116 
117 	ATA_SWDMA2_ONLY		= (1 << 2),
118 
119 	ATA_MWDMA0		= (1 << 0),
120 	ATA_MWDMA1		= ATA_MWDMA0 | (1 << 1),
121 	ATA_MWDMA2		= ATA_MWDMA1 | (1 << 2),
122 	ATA_MWDMA3		= ATA_MWDMA2 | (1 << 3),
123 	ATA_MWDMA4		= ATA_MWDMA3 | (1 << 4),
124 
125 	ATA_MWDMA12_ONLY	= (1 << 1) | (1 << 2),
126 	ATA_MWDMA2_ONLY		= (1 << 2),
127 
128 	ATA_UDMA0		= (1 << 0),
129 	ATA_UDMA1		= ATA_UDMA0 | (1 << 1),
130 	ATA_UDMA2		= ATA_UDMA1 | (1 << 2),
131 	ATA_UDMA3		= ATA_UDMA2 | (1 << 3),
132 	ATA_UDMA4		= ATA_UDMA3 | (1 << 4),
133 	ATA_UDMA5		= ATA_UDMA4 | (1 << 5),
134 	ATA_UDMA6		= ATA_UDMA5 | (1 << 6),
135 	ATA_UDMA7		= ATA_UDMA6 | (1 << 7),
136 	/* ATA_UDMA7 is just for completeness... doesn't exist (yet?).  */
137 
138 	ATA_UDMA24_ONLY		= (1 << 2) | (1 << 4),
139 
140 	ATA_UDMA_MASK_40C	= ATA_UDMA2,	/* udma0-2 */
141 
142 	/* DMA-related */
143 	ATA_PRD_SZ		= 8,
144 	ATA_PRD_TBL_SZ		= (ATA_MAX_PRD * ATA_PRD_SZ),
145 	ATA_PRD_EOT		= (1 << 31),	/* end-of-table flag */
146 
147 	ATA_DMA_TABLE_OFS	= 4,
148 	ATA_DMA_STATUS		= 2,
149 	ATA_DMA_CMD		= 0,
150 	ATA_DMA_WR		= (1 << 3),
151 	ATA_DMA_START		= (1 << 0),
152 	ATA_DMA_INTR		= (1 << 2),
153 	ATA_DMA_ERR		= (1 << 1),
154 	ATA_DMA_ACTIVE		= (1 << 0),
155 
156 	/* bits in ATA command block registers */
157 	ATA_HOB			= (1 << 7),	/* LBA48 selector */
158 	ATA_NIEN		= (1 << 1),	/* disable-irq flag */
159 	ATA_LBA			= (1 << 6),	/* LBA28 selector */
160 	ATA_DEV1		= (1 << 4),	/* Select Device 1 (slave) */
161 	ATA_DEVICE_OBS		= (1 << 7) | (1 << 5), /* obs bits in dev reg */
162 	ATA_DEVCTL_OBS		= (1 << 3),	/* obsolete bit in devctl reg */
163 	ATA_BUSY		= (1 << 7),	/* BSY status bit */
164 	ATA_DRDY		= (1 << 6),	/* device ready */
165 	ATA_DF			= (1 << 5),	/* device fault */
166 	ATA_DSC			= (1 << 4),	/* drive seek complete */
167 	ATA_DRQ			= (1 << 3),	/* data request i/o */
168 	ATA_CORR		= (1 << 2),	/* corrected data error */
169 	ATA_SENSE		= (1 << 1),	/* sense code available */
170 	ATA_ERR			= (1 << 0),	/* have an error */
171 	ATA_SRST		= (1 << 2),	/* software reset */
172 	ATA_ICRC		= (1 << 7),	/* interface CRC error */
173 	ATA_BBK			= ATA_ICRC,	/* pre-EIDE: block marked bad */
174 	ATA_UNC			= (1 << 6),	/* uncorrectable media error */
175 	ATA_MC			= (1 << 5),	/* media changed */
176 	ATA_IDNF		= (1 << 4),	/* ID not found */
177 	ATA_MCR			= (1 << 3),	/* media change requested */
178 	ATA_ABORTED		= (1 << 2),	/* command aborted */
179 	ATA_TRK0NF		= (1 << 1),	/* track 0 not found */
180 	ATA_AMNF		= (1 << 0),	/* address mark not found */
181 	ATAPI_LFS		= 0xF0,		/* last failed sense */
182 	ATAPI_EOM		= ATA_TRK0NF,	/* end of media */
183 	ATAPI_ILI		= ATA_AMNF,	/* illegal length indication */
184 	ATAPI_IO		= (1 << 1),
185 	ATAPI_COD		= (1 << 0),
186 
187 	/* ATA command block registers */
188 	ATA_REG_DATA		= 0x00,
189 	ATA_REG_ERR		= 0x01,
190 	ATA_REG_NSECT		= 0x02,
191 	ATA_REG_LBAL		= 0x03,
192 	ATA_REG_LBAM		= 0x04,
193 	ATA_REG_LBAH		= 0x05,
194 	ATA_REG_DEVICE		= 0x06,
195 	ATA_REG_STATUS		= 0x07,
196 
197 	ATA_REG_FEATURE		= ATA_REG_ERR, /* and their aliases */
198 	ATA_REG_CMD		= ATA_REG_STATUS,
199 	ATA_REG_BYTEL		= ATA_REG_LBAM,
200 	ATA_REG_BYTEH		= ATA_REG_LBAH,
201 	ATA_REG_DEVSEL		= ATA_REG_DEVICE,
202 	ATA_REG_IRQ		= ATA_REG_NSECT,
203 
204 	/* ATA device commands */
205 	ATA_CMD_DEV_RESET	= 0x08, /* ATAPI device reset */
206 	ATA_CMD_CHK_POWER	= 0xE5, /* check power mode */
207 	ATA_CMD_STANDBY		= 0xE2, /* place in standby power mode */
208 	ATA_CMD_IDLE		= 0xE3, /* place in idle power mode */
209 	ATA_CMD_EDD		= 0x90,	/* execute device diagnostic */
210 	ATA_CMD_DOWNLOAD_MICRO  = 0x92,
211 	ATA_CMD_DOWNLOAD_MICRO_DMA = 0x93,
212 	ATA_CMD_NOP		= 0x00,
213 	ATA_CMD_FLUSH		= 0xE7,
214 	ATA_CMD_FLUSH_EXT	= 0xEA,
215 	ATA_CMD_ID_ATA		= 0xEC,
216 	ATA_CMD_ID_ATAPI	= 0xA1,
217 	ATA_CMD_SERVICE		= 0xA2,
218 	ATA_CMD_READ		= 0xC8,
219 	ATA_CMD_READ_EXT	= 0x25,
220 	ATA_CMD_READ_QUEUED	= 0x26,
221 	ATA_CMD_READ_STREAM_EXT	= 0x2B,
222 	ATA_CMD_READ_STREAM_DMA_EXT = 0x2A,
223 	ATA_CMD_WRITE		= 0xCA,
224 	ATA_CMD_WRITE_EXT	= 0x35,
225 	ATA_CMD_WRITE_QUEUED	= 0x36,
226 	ATA_CMD_WRITE_STREAM_EXT = 0x3B,
227 	ATA_CMD_WRITE_STREAM_DMA_EXT = 0x3A,
228 	ATA_CMD_WRITE_FUA_EXT	= 0x3D,
229 	ATA_CMD_WRITE_QUEUED_FUA_EXT = 0x3E,
230 	ATA_CMD_FPDMA_READ	= 0x60,
231 	ATA_CMD_FPDMA_WRITE	= 0x61,
232 	ATA_CMD_NCQ_NON_DATA	= 0x63,
233 	ATA_CMD_FPDMA_SEND	= 0x64,
234 	ATA_CMD_FPDMA_RECV	= 0x65,
235 	ATA_CMD_PIO_READ	= 0x20,
236 	ATA_CMD_PIO_READ_EXT	= 0x24,
237 	ATA_CMD_PIO_WRITE	= 0x30,
238 	ATA_CMD_PIO_WRITE_EXT	= 0x34,
239 	ATA_CMD_READ_MULTI	= 0xC4,
240 	ATA_CMD_READ_MULTI_EXT	= 0x29,
241 	ATA_CMD_WRITE_MULTI	= 0xC5,
242 	ATA_CMD_WRITE_MULTI_EXT	= 0x39,
243 	ATA_CMD_WRITE_MULTI_FUA_EXT = 0xCE,
244 	ATA_CMD_SET_FEATURES	= 0xEF,
245 	ATA_CMD_SET_MULTI	= 0xC6,
246 	ATA_CMD_PACKET		= 0xA0,
247 	ATA_CMD_VERIFY		= 0x40,
248 	ATA_CMD_VERIFY_EXT	= 0x42,
249 	ATA_CMD_WRITE_UNCORR_EXT = 0x45,
250 	ATA_CMD_STANDBYNOW1	= 0xE0,
251 	ATA_CMD_IDLEIMMEDIATE	= 0xE1,
252 	ATA_CMD_SLEEP		= 0xE6,
253 	ATA_CMD_INIT_DEV_PARAMS	= 0x91,
254 	ATA_CMD_READ_NATIVE_MAX	= 0xF8,
255 	ATA_CMD_READ_NATIVE_MAX_EXT = 0x27,
256 	ATA_CMD_SET_MAX		= 0xF9,
257 	ATA_CMD_SET_MAX_EXT	= 0x37,
258 	ATA_CMD_READ_LOG_EXT	= 0x2F,
259 	ATA_CMD_WRITE_LOG_EXT	= 0x3F,
260 	ATA_CMD_READ_LOG_DMA_EXT = 0x47,
261 	ATA_CMD_WRITE_LOG_DMA_EXT = 0x57,
262 	ATA_CMD_TRUSTED_NONDATA	= 0x5B,
263 	ATA_CMD_TRUSTED_RCV	= 0x5C,
264 	ATA_CMD_TRUSTED_RCV_DMA = 0x5D,
265 	ATA_CMD_TRUSTED_SND	= 0x5E,
266 	ATA_CMD_TRUSTED_SND_DMA = 0x5F,
267 	ATA_CMD_PMP_READ	= 0xE4,
268 	ATA_CMD_PMP_READ_DMA	= 0xE9,
269 	ATA_CMD_PMP_WRITE	= 0xE8,
270 	ATA_CMD_PMP_WRITE_DMA	= 0xEB,
271 	ATA_CMD_CONF_OVERLAY	= 0xB1,
272 	ATA_CMD_SEC_SET_PASS	= 0xF1,
273 	ATA_CMD_SEC_UNLOCK	= 0xF2,
274 	ATA_CMD_SEC_ERASE_PREP	= 0xF3,
275 	ATA_CMD_SEC_ERASE_UNIT	= 0xF4,
276 	ATA_CMD_SEC_FREEZE_LOCK	= 0xF5,
277 	ATA_CMD_SEC_DISABLE_PASS = 0xF6,
278 	ATA_CMD_CONFIG_STREAM	= 0x51,
279 	ATA_CMD_SMART		= 0xB0,
280 	ATA_CMD_MEDIA_LOCK	= 0xDE,
281 	ATA_CMD_MEDIA_UNLOCK	= 0xDF,
282 	ATA_CMD_DSM		= 0x06,
283 	ATA_CMD_CHK_MED_CRD_TYP = 0xD1,
284 	ATA_CMD_CFA_REQ_EXT_ERR = 0x03,
285 	ATA_CMD_CFA_WRITE_NE	= 0x38,
286 	ATA_CMD_CFA_TRANS_SECT	= 0x87,
287 	ATA_CMD_CFA_ERASE	= 0xC0,
288 	ATA_CMD_CFA_WRITE_MULT_NE = 0xCD,
289 	ATA_CMD_REQ_SENSE_DATA  = 0x0B,
290 	ATA_CMD_SANITIZE_DEVICE = 0xB4,
291 	ATA_CMD_ZAC_MGMT_IN	= 0x4A,
292 	ATA_CMD_ZAC_MGMT_OUT	= 0x9F,
293 
294 	/* marked obsolete in the ATA/ATAPI-7 spec */
295 	ATA_CMD_RESTORE		= 0x10,
296 
297 	/* Subcmds for ATA_CMD_FPDMA_RECV */
298 	ATA_SUBCMD_FPDMA_RECV_RD_LOG_DMA_EXT = 0x01,
299 	ATA_SUBCMD_FPDMA_RECV_ZAC_MGMT_IN    = 0x02,
300 
301 	/* Subcmds for ATA_CMD_FPDMA_SEND */
302 	ATA_SUBCMD_FPDMA_SEND_DSM            = 0x00,
303 	ATA_SUBCMD_FPDMA_SEND_WR_LOG_DMA_EXT = 0x02,
304 
305 	/* Subcmds for ATA_CMD_NCQ_NON_DATA */
306 	ATA_SUBCMD_NCQ_NON_DATA_ABORT_QUEUE  = 0x00,
307 	ATA_SUBCMD_NCQ_NON_DATA_SET_FEATURES = 0x05,
308 	ATA_SUBCMD_NCQ_NON_DATA_ZERO_EXT     = 0x06,
309 	ATA_SUBCMD_NCQ_NON_DATA_ZAC_MGMT_OUT = 0x07,
310 
311 	/* Subcmds for ATA_CMD_ZAC_MGMT_IN */
312 	ATA_SUBCMD_ZAC_MGMT_IN_REPORT_ZONES = 0x00,
313 
314 	/* Subcmds for ATA_CMD_ZAC_MGMT_OUT */
315 	ATA_SUBCMD_ZAC_MGMT_OUT_CLOSE_ZONE = 0x01,
316 	ATA_SUBCMD_ZAC_MGMT_OUT_FINISH_ZONE = 0x02,
317 	ATA_SUBCMD_ZAC_MGMT_OUT_OPEN_ZONE = 0x03,
318 	ATA_SUBCMD_ZAC_MGMT_OUT_RESET_WRITE_POINTER = 0x04,
319 
320 	/* READ_LOG_EXT pages */
321 	ATA_LOG_DIRECTORY	= 0x0,
322 	ATA_LOG_SATA_NCQ	= 0x10,
323 	ATA_LOG_NCQ_NON_DATA	= 0x12,
324 	ATA_LOG_NCQ_SEND_RECV	= 0x13,
325 	ATA_LOG_CDL		= 0x18,
326 	ATA_LOG_CDL_SIZE	= ATA_SECT_SIZE,
327 	ATA_LOG_IDENTIFY_DEVICE	= 0x30,
328 	ATA_LOG_SENSE_NCQ	= 0x0F,
329 	ATA_LOG_SENSE_NCQ_SIZE	= ATA_SECT_SIZE * 2,
330 	ATA_LOG_CONCURRENT_POSITIONING_RANGES = 0x47,
331 
332 	/* Identify device log pages: */
333 	ATA_LOG_SUPPORTED_CAPABILITIES	= 0x03,
334 	ATA_LOG_CURRENT_SETTINGS  = 0x04,
335 	ATA_LOG_SECURITY	  = 0x06,
336 	ATA_LOG_SATA_SETTINGS	  = 0x08,
337 	ATA_LOG_ZONED_INFORMATION = 0x09,
338 
339 	/* Identify device SATA settings log: */
340 	ATA_LOG_DEVSLP_OFFSET	  = 0x30,
341 	ATA_LOG_DEVSLP_SIZE	  = 0x08,
342 	ATA_LOG_DEVSLP_MDAT	  = 0x00,
343 	ATA_LOG_DEVSLP_MDAT_MASK  = 0x1F,
344 	ATA_LOG_DEVSLP_DETO	  = 0x01,
345 	ATA_LOG_DEVSLP_VALID	  = 0x07,
346 	ATA_LOG_DEVSLP_VALID_MASK = 0x80,
347 	ATA_LOG_NCQ_PRIO_OFFSET   = 0x09,
348 
349 	/* NCQ send and receive log */
350 	ATA_LOG_NCQ_SEND_RECV_SUBCMDS_OFFSET	= 0x00,
351 	ATA_LOG_NCQ_SEND_RECV_SUBCMDS_DSM	= (1 << 0),
352 	ATA_LOG_NCQ_SEND_RECV_DSM_OFFSET	= 0x04,
353 	ATA_LOG_NCQ_SEND_RECV_DSM_TRIM		= (1 << 0),
354 	ATA_LOG_NCQ_SEND_RECV_RD_LOG_OFFSET	= 0x08,
355 	ATA_LOG_NCQ_SEND_RECV_RD_LOG_SUPPORTED  = (1 << 0),
356 	ATA_LOG_NCQ_SEND_RECV_WR_LOG_OFFSET	= 0x0C,
357 	ATA_LOG_NCQ_SEND_RECV_WR_LOG_SUPPORTED  = (1 << 0),
358 	ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_OFFSET	= 0x10,
359 	ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_OUT_SUPPORTED = (1 << 0),
360 	ATA_LOG_NCQ_SEND_RECV_ZAC_MGMT_IN_SUPPORTED = (1 << 1),
361 	ATA_LOG_NCQ_SEND_RECV_SIZE		= 0x14,
362 
363 	/* NCQ Non-Data log */
364 	ATA_LOG_NCQ_NON_DATA_SUBCMDS_OFFSET	= 0x00,
365 	ATA_LOG_NCQ_NON_DATA_ABORT_OFFSET	= 0x00,
366 	ATA_LOG_NCQ_NON_DATA_ABORT_NCQ		= (1 << 0),
367 	ATA_LOG_NCQ_NON_DATA_ABORT_ALL		= (1 << 1),
368 	ATA_LOG_NCQ_NON_DATA_ABORT_STREAMING	= (1 << 2),
369 	ATA_LOG_NCQ_NON_DATA_ABORT_NON_STREAMING = (1 << 3),
370 	ATA_LOG_NCQ_NON_DATA_ABORT_SELECTED	= (1 << 4),
371 	ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OFFSET	= 0x1C,
372 	ATA_LOG_NCQ_NON_DATA_ZAC_MGMT_OUT	= (1 << 0),
373 	ATA_LOG_NCQ_NON_DATA_SIZE		= 0x40,
374 
375 	/* READ/WRITE LONG (obsolete) */
376 	ATA_CMD_READ_LONG	= 0x22,
377 	ATA_CMD_READ_LONG_ONCE	= 0x23,
378 	ATA_CMD_WRITE_LONG	= 0x32,
379 	ATA_CMD_WRITE_LONG_ONCE	= 0x33,
380 
381 	/* SETFEATURES stuff */
382 	SETFEATURES_XFER	= 0x03,
383 	XFER_UDMA_7		= 0x47,
384 	XFER_UDMA_6		= 0x46,
385 	XFER_UDMA_5		= 0x45,
386 	XFER_UDMA_4		= 0x44,
387 	XFER_UDMA_3		= 0x43,
388 	XFER_UDMA_2		= 0x42,
389 	XFER_UDMA_1		= 0x41,
390 	XFER_UDMA_0		= 0x40,
391 	XFER_MW_DMA_4		= 0x24,	/* CFA only */
392 	XFER_MW_DMA_3		= 0x23,	/* CFA only */
393 	XFER_MW_DMA_2		= 0x22,
394 	XFER_MW_DMA_1		= 0x21,
395 	XFER_MW_DMA_0		= 0x20,
396 	XFER_SW_DMA_2		= 0x12,
397 	XFER_SW_DMA_1		= 0x11,
398 	XFER_SW_DMA_0		= 0x10,
399 	XFER_PIO_6		= 0x0E,	/* CFA only */
400 	XFER_PIO_5		= 0x0D,	/* CFA only */
401 	XFER_PIO_4		= 0x0C,
402 	XFER_PIO_3		= 0x0B,
403 	XFER_PIO_2		= 0x0A,
404 	XFER_PIO_1		= 0x09,
405 	XFER_PIO_0		= 0x08,
406 	XFER_PIO_SLOW		= 0x00,
407 
408 	SETFEATURES_WC_ON	= 0x02, /* Enable write cache */
409 	SETFEATURES_WC_OFF	= 0x82, /* Disable write cache */
410 
411 	SETFEATURES_RA_ON	= 0xaa, /* Enable read look-ahead */
412 	SETFEATURES_RA_OFF	= 0x55, /* Disable read look-ahead */
413 
414 	/* Enable/Disable Automatic Acoustic Management */
415 	SETFEATURES_AAM_ON	= 0x42,
416 	SETFEATURES_AAM_OFF	= 0xC2,
417 
418 	SETFEATURES_SPINUP		= 0x07, /* Spin-up drive */
419 	SETFEATURES_SPINUP_TIMEOUT	= 30000, /* 30s timeout for drive spin-up from PUIS */
420 
421 	SETFEATURES_SATA_ENABLE = 0x10, /* Enable use of SATA feature */
422 	SETFEATURES_SATA_DISABLE = 0x90, /* Disable use of SATA feature */
423 
424 	SETFEATURES_CDL		= 0x0d, /* Enable/disable cmd duration limits */
425 
426 	/* SETFEATURE Sector counts for SATA features */
427 	SATA_FPDMA_OFFSET	= 0x01,	/* FPDMA non-zero buffer offsets */
428 	SATA_FPDMA_AA		= 0x02, /* FPDMA Setup FIS Auto-Activate */
429 	SATA_DIPM		= 0x03,	/* Device Initiated Power Management */
430 	SATA_FPDMA_IN_ORDER	= 0x04,	/* FPDMA in-order data delivery */
431 	SATA_AN			= 0x05,	/* Asynchronous Notification */
432 	SATA_SSP		= 0x06,	/* Software Settings Preservation */
433 	SATA_DEVSLP		= 0x09,	/* Device Sleep */
434 
435 	SETFEATURE_SENSE_DATA	= 0xC3, /* Sense Data Reporting feature */
436 	SETFEATURE_SENSE_DATA_SUCC_NCQ = 0xC4, /* Sense Data for successful NCQ commands */
437 
438 	/* feature values for SET_MAX */
439 	ATA_SET_MAX_ADDR	= 0x00,
440 	ATA_SET_MAX_PASSWD	= 0x01,
441 	ATA_SET_MAX_LOCK	= 0x02,
442 	ATA_SET_MAX_UNLOCK	= 0x03,
443 	ATA_SET_MAX_FREEZE_LOCK	= 0x04,
444 	ATA_SET_MAX_PASSWD_DMA	= 0x05,
445 	ATA_SET_MAX_UNLOCK_DMA	= 0x06,
446 
447 	/* feature values for DEVICE CONFIGURATION OVERLAY */
448 	ATA_DCO_RESTORE		= 0xC0,
449 	ATA_DCO_FREEZE_LOCK	= 0xC1,
450 	ATA_DCO_IDENTIFY	= 0xC2,
451 	ATA_DCO_SET		= 0xC3,
452 
453 	/* feature values for SMART */
454 	ATA_SMART_ENABLE	= 0xD8,
455 	ATA_SMART_READ_VALUES	= 0xD0,
456 	ATA_SMART_READ_THRESHOLDS = 0xD1,
457 
458 	/* feature values for Data Set Management */
459 	ATA_DSM_TRIM		= 0x01,
460 
461 	/* password used in LBA Mid / LBA High for executing SMART commands */
462 	ATA_SMART_LBAM_PASS	= 0x4F,
463 	ATA_SMART_LBAH_PASS	= 0xC2,
464 
465 	/* ATAPI stuff */
466 	ATAPI_PKT_DMA		= (1 << 0),
467 	ATAPI_DMADIR		= (1 << 2),	/* ATAPI data dir:
468 						   0=to device, 1=to host */
469 	ATAPI_CDB_LEN		= 16,
470 
471 	/* PMP stuff */
472 	SATA_PMP_MAX_PORTS	= 15,
473 	SATA_PMP_CTRL_PORT	= 15,
474 
475 	SATA_PMP_GSCR_DWORDS	= 128,
476 	SATA_PMP_GSCR_PROD_ID	= 0,
477 	SATA_PMP_GSCR_REV	= 1,
478 	SATA_PMP_GSCR_PORT_INFO	= 2,
479 	SATA_PMP_GSCR_ERROR	= 32,
480 	SATA_PMP_GSCR_ERROR_EN	= 33,
481 	SATA_PMP_GSCR_FEAT	= 64,
482 	SATA_PMP_GSCR_FEAT_EN	= 96,
483 
484 	SATA_PMP_PSCR_STATUS	= 0,
485 	SATA_PMP_PSCR_ERROR	= 1,
486 	SATA_PMP_PSCR_CONTROL	= 2,
487 
488 	SATA_PMP_FEAT_BIST	= (1 << 0),
489 	SATA_PMP_FEAT_PMREQ	= (1 << 1),
490 	SATA_PMP_FEAT_DYNSSC	= (1 << 2),
491 	SATA_PMP_FEAT_NOTIFY	= (1 << 3),
492 
493 	/* cable types */
494 	ATA_CBL_NONE		= 0,
495 	ATA_CBL_PATA40		= 1,
496 	ATA_CBL_PATA80		= 2,
497 	ATA_CBL_PATA40_SHORT	= 3,	/* 40 wire cable to high UDMA spec */
498 	ATA_CBL_PATA_UNK	= 4,	/* don't know, maybe 80c? */
499 	ATA_CBL_PATA_IGN	= 5,	/* don't know, ignore cable handling */
500 	ATA_CBL_SATA		= 6,
501 
502 	/* SATA Status and Control Registers */
503 	SCR_STATUS		= 0,
504 	SCR_ERROR		= 1,
505 	SCR_CONTROL		= 2,
506 	SCR_ACTIVE		= 3,
507 	SCR_NOTIFICATION	= 4,
508 
509 	/* SError bits */
510 	SERR_DATA_RECOVERED	= (1 << 0), /* recovered data error */
511 	SERR_COMM_RECOVERED	= (1 << 1), /* recovered comm failure */
512 	SERR_DATA		= (1 << 8), /* unrecovered data error */
513 	SERR_PERSISTENT		= (1 << 9), /* persistent data/comm error */
514 	SERR_PROTOCOL		= (1 << 10), /* protocol violation */
515 	SERR_INTERNAL		= (1 << 11), /* host internal error */
516 	SERR_PHYRDY_CHG		= (1 << 16), /* PHY RDY changed */
517 	SERR_PHY_INT_ERR	= (1 << 17), /* PHY internal error */
518 	SERR_COMM_WAKE		= (1 << 18), /* Comm wake */
519 	SERR_10B_8B_ERR		= (1 << 19), /* 10b to 8b decode error */
520 	SERR_DISPARITY		= (1 << 20), /* Disparity */
521 	SERR_CRC		= (1 << 21), /* CRC error */
522 	SERR_HANDSHAKE		= (1 << 22), /* Handshake error */
523 	SERR_LINK_SEQ_ERR	= (1 << 23), /* Link sequence error */
524 	SERR_TRANS_ST_ERROR	= (1 << 24), /* Transport state trans. error */
525 	SERR_UNRECOG_FIS	= (1 << 25), /* Unrecognized FIS */
526 	SERR_DEV_XCHG		= (1 << 26), /* device exchanged */
527 };
528 
529 enum ata_prot_flags {
530 	/* protocol flags */
531 	ATA_PROT_FLAG_PIO	= (1 << 0), /* is PIO */
532 	ATA_PROT_FLAG_DMA	= (1 << 1), /* is DMA */
533 	ATA_PROT_FLAG_NCQ	= (1 << 2), /* is NCQ */
534 	ATA_PROT_FLAG_ATAPI	= (1 << 3), /* is ATAPI */
535 
536 	/* taskfile protocols */
537 	ATA_PROT_UNKNOWN	= (u8)-1,
538 	ATA_PROT_NODATA		= 0,
539 	ATA_PROT_PIO		= ATA_PROT_FLAG_PIO,
540 	ATA_PROT_DMA		= ATA_PROT_FLAG_DMA,
541 	ATA_PROT_NCQ_NODATA	= ATA_PROT_FLAG_NCQ,
542 	ATA_PROT_NCQ		= ATA_PROT_FLAG_DMA | ATA_PROT_FLAG_NCQ,
543 	ATAPI_PROT_NODATA	= ATA_PROT_FLAG_ATAPI,
544 	ATAPI_PROT_PIO		= ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_PIO,
545 	ATAPI_PROT_DMA		= ATA_PROT_FLAG_ATAPI | ATA_PROT_FLAG_DMA,
546 };
547 
548 enum ata_ioctls {
549 	ATA_IOC_GET_IO32	= 0x309, /* HDIO_GET_32BIT */
550 	ATA_IOC_SET_IO32	= 0x324, /* HDIO_SET_32BIT */
551 };
552 
553 /* core structures */
554 
555 struct ata_bmdma_prd {
556 	__le32			addr;
557 	__le32			flags_len;
558 };
559 
560 /*
561  * id tests
562  */
563 #define ata_id_is_ata(id)	(((id)[ATA_ID_CONFIG] & (1 << 15)) == 0)
564 #define ata_id_has_lba(id)	((id)[ATA_ID_CAPABILITY] & (1 << 9))
565 #define ata_id_has_dma(id)	((id)[ATA_ID_CAPABILITY] & (1 << 8))
566 #define ata_id_has_ncq(id)	((id)[ATA_ID_SATA_CAPABILITY] & (1 << 8))
567 #define ata_id_queue_depth(id)	(((id)[ATA_ID_QUEUE_DEPTH] & 0x1f) + 1)
568 #define ata_id_removable(id)	((id)[ATA_ID_CONFIG] & (1 << 7))
569 #define ata_id_has_atapi_AN(id)	\
570 	((((id)[ATA_ID_SATA_CAPABILITY] != 0x0000) && \
571 	  ((id)[ATA_ID_SATA_CAPABILITY] != 0xffff)) && \
572 	 ((id)[ATA_ID_FEATURE_SUPP] & (1 << 5)))
573 #define ata_id_has_fpdma_aa(id)	\
574 	((((id)[ATA_ID_SATA_CAPABILITY] != 0x0000) && \
575 	  ((id)[ATA_ID_SATA_CAPABILITY] != 0xffff)) && \
576 	 ((id)[ATA_ID_FEATURE_SUPP] & (1 << 2)))
577 #define ata_id_has_devslp(id)	\
578 	((((id)[ATA_ID_SATA_CAPABILITY] != 0x0000) && \
579 	  ((id)[ATA_ID_SATA_CAPABILITY] != 0xffff)) && \
580 	 ((id)[ATA_ID_FEATURE_SUPP] & (1 << 8)))
581 #define ata_id_has_ncq_autosense(id) \
582 	((((id)[ATA_ID_SATA_CAPABILITY] != 0x0000) && \
583 	  ((id)[ATA_ID_SATA_CAPABILITY] != 0xffff)) && \
584 	 ((id)[ATA_ID_FEATURE_SUPP] & (1 << 7)))
585 #define ata_id_has_dipm(id)	\
586 	((((id)[ATA_ID_SATA_CAPABILITY] != 0x0000) && \
587 	  ((id)[ATA_ID_SATA_CAPABILITY] != 0xffff)) && \
588 	 ((id)[ATA_ID_FEATURE_SUPP] & (1 << 3)))
589 #define ata_id_iordy_disable(id) ((id)[ATA_ID_CAPABILITY] & (1 << 10))
590 #define ata_id_has_iordy(id) ((id)[ATA_ID_CAPABILITY] & (1 << 11))
591 #define ata_id_u32(id,n)	\
592 	(((u32) (id)[(n) + 1] << 16) | ((u32) (id)[(n)]))
593 #define ata_id_u64(id,n)	\
594 	( ((u64) (id)[(n) + 3] << 48) |	\
595 	  ((u64) (id)[(n) + 2] << 32) |	\
596 	  ((u64) (id)[(n) + 1] << 16) |	\
597 	  ((u64) (id)[(n) + 0]) )
598 
599 #define ata_id_cdb_intr(id)	(((id)[ATA_ID_CONFIG] & 0x60) == 0x20)
600 #define ata_id_has_da(id)	((id)[ATA_ID_SATA_CAPABILITY_2] & (1 << 4))
601 
ata_id_has_hipm(const u16 * id)602 static inline bool ata_id_has_hipm(const u16 *id)
603 {
604 	u16 val = id[ATA_ID_SATA_CAPABILITY];
605 
606 	if (val == 0 || val == 0xffff)
607 		return false;
608 
609 	return val & (1 << 9);
610 }
611 
ata_id_has_fua(const u16 * id)612 static inline bool ata_id_has_fua(const u16 *id)
613 {
614 	if ((id[ATA_ID_CFSSE] & 0xC000) != 0x4000)
615 		return false;
616 	return id[ATA_ID_CFSSE] & (1 << 6);
617 }
618 
ata_id_has_flush(const u16 * id)619 static inline bool ata_id_has_flush(const u16 *id)
620 {
621 	if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
622 		return false;
623 	return id[ATA_ID_COMMAND_SET_2] & (1 << 12);
624 }
625 
ata_id_has_flush_ext(const u16 * id)626 static inline bool ata_id_has_flush_ext(const u16 *id)
627 {
628 	if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
629 		return false;
630 	return id[ATA_ID_COMMAND_SET_2] & (1 << 13);
631 }
632 
ata_id_logical_sector_size(const u16 * id)633 static inline u32 ata_id_logical_sector_size(const u16 *id)
634 {
635 	/* T13/1699-D Revision 6a, Sep 6, 2008. Page 128.
636 	 * IDENTIFY DEVICE data, word 117-118.
637 	 * 0xd000 ignores bit 13 (logical:physical > 1)
638 	 */
639 	if ((id[ATA_ID_SECTOR_SIZE] & 0xd000) == 0x5000)
640 		return (((id[ATA_ID_LOGICAL_SECTOR_SIZE+1] << 16)
641 			 + id[ATA_ID_LOGICAL_SECTOR_SIZE]) * sizeof(u16)) ;
642 	return ATA_SECT_SIZE;
643 }
644 
ata_id_log2_per_physical_sector(const u16 * id)645 static inline u8 ata_id_log2_per_physical_sector(const u16 *id)
646 {
647 	/* T13/1699-D Revision 6a, Sep 6, 2008. Page 128.
648 	 * IDENTIFY DEVICE data, word 106.
649 	 * 0xe000 ignores bit 12 (logical sector > 512 bytes)
650 	 */
651 	if ((id[ATA_ID_SECTOR_SIZE] & 0xe000) == 0x6000)
652 		return (id[ATA_ID_SECTOR_SIZE] & 0xf);
653 	return 0;
654 }
655 
656 /* Offset of logical sectors relative to physical sectors.
657  *
658  * If device has more than one logical sector per physical sector
659  * (aka 512 byte emulation), vendors might offset the "sector 0" address
660  * so sector 63 is "naturally aligned" - e.g. FAT partition table.
661  * This avoids Read/Mod/Write penalties when using FAT partition table
662  * and updating "well aligned" (FS perspective) physical sectors on every
663  * transaction.
664  */
ata_id_logical_sector_offset(const u16 * id,u8 log2_per_phys)665 static inline u16 ata_id_logical_sector_offset(const u16 *id,
666 	 u8 log2_per_phys)
667 {
668 	u16 word_209 = id[209];
669 
670 	if ((log2_per_phys > 1) && (word_209 & 0xc000) == 0x4000) {
671 		u16 first = word_209 & 0x3fff;
672 		if (first > 0)
673 			return (1 << log2_per_phys) - first;
674 	}
675 	return 0;
676 }
677 
ata_id_has_lba48(const u16 * id)678 static inline bool ata_id_has_lba48(const u16 *id)
679 {
680 	if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
681 		return false;
682 	if (!ata_id_u64(id, ATA_ID_LBA_CAPACITY_2))
683 		return false;
684 	return id[ATA_ID_COMMAND_SET_2] & (1 << 10);
685 }
686 
ata_id_hpa_enabled(const u16 * id)687 static inline bool ata_id_hpa_enabled(const u16 *id)
688 {
689 	/* Yes children, word 83 valid bits cover word 82 data */
690 	if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
691 		return false;
692 	/* And 87 covers 85-87 */
693 	if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
694 		return false;
695 	/* Check command sets enabled as well as supported */
696 	if ((id[ATA_ID_CFS_ENABLE_1] & (1 << 10)) == 0)
697 		return false;
698 	return id[ATA_ID_COMMAND_SET_1] & (1 << 10);
699 }
700 
ata_id_has_wcache(const u16 * id)701 static inline bool ata_id_has_wcache(const u16 *id)
702 {
703 	/* Yes children, word 83 valid bits cover word 82 data */
704 	if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
705 		return false;
706 	return id[ATA_ID_COMMAND_SET_1] & (1 << 5);
707 }
708 
ata_id_has_pm(const u16 * id)709 static inline bool ata_id_has_pm(const u16 *id)
710 {
711 	if ((id[ATA_ID_COMMAND_SET_2] & 0xC000) != 0x4000)
712 		return false;
713 	return id[ATA_ID_COMMAND_SET_1] & (1 << 3);
714 }
715 
ata_id_rahead_enabled(const u16 * id)716 static inline bool ata_id_rahead_enabled(const u16 *id)
717 {
718 	if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
719 		return false;
720 	return id[ATA_ID_CFS_ENABLE_1] & (1 << 6);
721 }
722 
ata_id_wcache_enabled(const u16 * id)723 static inline bool ata_id_wcache_enabled(const u16 *id)
724 {
725 	if ((id[ATA_ID_CSF_DEFAULT] & 0xC000) != 0x4000)
726 		return false;
727 	return id[ATA_ID_CFS_ENABLE_1] & (1 << 5);
728 }
729 
ata_id_has_read_log_dma_ext(const u16 * id)730 static inline bool ata_id_has_read_log_dma_ext(const u16 *id)
731 {
732 	/* Word 86 must have bit 15 set */
733 	if (!(id[ATA_ID_CFS_ENABLE_2] & (1 << 15)))
734 		return false;
735 
736 	/* READ LOG DMA EXT support can be signaled either from word 119
737 	 * or from word 120. The format is the same for both words: Bit
738 	 * 15 must be cleared, bit 14 set and bit 3 set.
739 	 */
740 	if ((id[ATA_ID_COMMAND_SET_3] & 0xC008) == 0x4008 ||
741 	    (id[ATA_ID_COMMAND_SET_4] & 0xC008) == 0x4008)
742 		return true;
743 
744 	return false;
745 }
746 
ata_id_has_sense_reporting(const u16 * id)747 static inline bool ata_id_has_sense_reporting(const u16 *id)
748 {
749 	if (!(id[ATA_ID_CFS_ENABLE_2] & BIT(15)))
750 		return false;
751 	if ((id[ATA_ID_COMMAND_SET_3] & (BIT(15) | BIT(14))) != BIT(14))
752 		return false;
753 	return id[ATA_ID_COMMAND_SET_3] & BIT(6);
754 }
755 
ata_id_sense_reporting_enabled(const u16 * id)756 static inline bool ata_id_sense_reporting_enabled(const u16 *id)
757 {
758 	if (!ata_id_has_sense_reporting(id))
759 		return false;
760 	/* ata_id_has_sense_reporting() == true, word 86 must have bit 15 set */
761 	if ((id[ATA_ID_COMMAND_SET_4] & (BIT(15) | BIT(14))) != BIT(14))
762 		return false;
763 	return id[ATA_ID_COMMAND_SET_4] & BIT(6);
764 }
765 
766 /**
767  *
768  * Word: 206 - SCT Command Transport
769  *    15:12 - Vendor Specific
770  *     11:6 - Reserved
771  *        5 - SCT Command Transport Data Tables supported
772  *        4 - SCT Command Transport Features Control supported
773  *        3 - SCT Command Transport Error Recovery Control supported
774  *        2 - SCT Command Transport Write Same supported
775  *        1 - SCT Command Transport Long Sector Access supported
776  *        0 - SCT Command Transport supported
777  */
ata_id_sct_data_tables(const u16 * id)778 static inline bool ata_id_sct_data_tables(const u16 *id)
779 {
780 	return id[ATA_ID_SCT_CMD_XPORT] & (1 << 5) ? true : false;
781 }
782 
ata_id_sct_features_ctrl(const u16 * id)783 static inline bool ata_id_sct_features_ctrl(const u16 *id)
784 {
785 	return id[ATA_ID_SCT_CMD_XPORT] & (1 << 4) ? true : false;
786 }
787 
ata_id_sct_error_recovery_ctrl(const u16 * id)788 static inline bool ata_id_sct_error_recovery_ctrl(const u16 *id)
789 {
790 	return id[ATA_ID_SCT_CMD_XPORT] & (1 << 3) ? true : false;
791 }
792 
ata_id_sct_long_sector_access(const u16 * id)793 static inline bool ata_id_sct_long_sector_access(const u16 *id)
794 {
795 	return id[ATA_ID_SCT_CMD_XPORT] & (1 << 1) ? true : false;
796 }
797 
ata_id_sct_supported(const u16 * id)798 static inline bool ata_id_sct_supported(const u16 *id)
799 {
800 	return id[ATA_ID_SCT_CMD_XPORT] & (1 << 0) ? true : false;
801 }
802 
803 /**
804  *	ata_id_major_version	-	get ATA level of drive
805  *	@id: Identify data
806  *
807  *	Caveats:
808  *		ATA-1 considers identify optional
809  *		ATA-2 introduces mandatory identify
810  *		ATA-3 introduces word 80 and accurate reporting
811  *
812  *	The practical impact of this is that ata_id_major_version cannot
813  *	reliably report on drives below ATA3.
814  */
815 
ata_id_major_version(const u16 * id)816 static inline unsigned int ata_id_major_version(const u16 *id)
817 {
818 	unsigned int mver;
819 
820 	if (id[ATA_ID_MAJOR_VER] == 0xFFFF)
821 		return 0;
822 
823 	for (mver = 14; mver >= 1; mver--)
824 		if (id[ATA_ID_MAJOR_VER] & (1 << mver))
825 			break;
826 	return mver;
827 }
828 
ata_id_is_sata(const u16 * id)829 static inline bool ata_id_is_sata(const u16 *id)
830 {
831 	/*
832 	 * See if word 93 is 0 AND drive is at least ATA-5 compatible
833 	 * verifying that word 80 by casting it to a signed type --
834 	 * this trick allows us to filter out the reserved values of
835 	 * 0x0000 and 0xffff along with the earlier ATA revisions...
836 	 */
837 	if (id[ATA_ID_HW_CONFIG] == 0 && (short)id[ATA_ID_MAJOR_VER] >= 0x0020)
838 		return true;
839 	return false;
840 }
841 
ata_id_has_tpm(const u16 * id)842 static inline bool ata_id_has_tpm(const u16 *id)
843 {
844 	/* The TPM bits are only valid on ATA8 */
845 	if (ata_id_major_version(id) < 8)
846 		return false;
847 	if ((id[48] & 0xC000) != 0x4000)
848 		return false;
849 	return id[48] & (1 << 0);
850 }
851 
ata_id_has_dword_io(const u16 * id)852 static inline bool ata_id_has_dword_io(const u16 *id)
853 {
854 	/* ATA 8 reuses this flag for "trusted" computing */
855 	if (ata_id_major_version(id) > 7)
856 		return false;
857 	return id[ATA_ID_DWORD_IO] & (1 << 0);
858 }
859 
ata_id_has_trusted(const u16 * id)860 static inline bool ata_id_has_trusted(const u16 *id)
861 {
862 	if (ata_id_major_version(id) <= 7)
863 		return false;
864 	return id[ATA_ID_TRUSTED] & (1 << 0);
865 }
866 
ata_id_has_unload(const u16 * id)867 static inline bool ata_id_has_unload(const u16 *id)
868 {
869 	if (ata_id_major_version(id) >= 7 &&
870 	    (id[ATA_ID_CFSSE] & 0xC000) == 0x4000 &&
871 	    id[ATA_ID_CFSSE] & (1 << 13))
872 		return true;
873 	return false;
874 }
875 
ata_id_has_wwn(const u16 * id)876 static inline bool ata_id_has_wwn(const u16 *id)
877 {
878 	return (id[ATA_ID_CSF_DEFAULT] & 0xC100) == 0x4100;
879 }
880 
ata_id_form_factor(const u16 * id)881 static inline int ata_id_form_factor(const u16 *id)
882 {
883 	u16 val = id[168];
884 
885 	if (ata_id_major_version(id) < 7 || val == 0 || val == 0xffff)
886 		return 0;
887 
888 	val &= 0xf;
889 
890 	if (val > 5)
891 		return 0;
892 
893 	return val;
894 }
895 
ata_id_rotation_rate(const u16 * id)896 static inline int ata_id_rotation_rate(const u16 *id)
897 {
898 	u16 val = id[217];
899 
900 	if (ata_id_major_version(id) < 7 || val == 0 || val == 0xffff)
901 		return 0;
902 
903 	if (val > 1 && val < 0x401)
904 		return 0;
905 
906 	return val;
907 }
908 
ata_id_has_ncq_send_and_recv(const u16 * id)909 static inline bool ata_id_has_ncq_send_and_recv(const u16 *id)
910 {
911 	return id[ATA_ID_SATA_CAPABILITY_2] & BIT(6);
912 }
913 
ata_id_has_ncq_non_data(const u16 * id)914 static inline bool ata_id_has_ncq_non_data(const u16 *id)
915 {
916 	return id[ATA_ID_SATA_CAPABILITY_2] & BIT(5);
917 }
918 
ata_id_has_ncq_prio(const u16 * id)919 static inline bool ata_id_has_ncq_prio(const u16 *id)
920 {
921 	return id[ATA_ID_SATA_CAPABILITY] & BIT(12);
922 }
923 
ata_id_has_trim(const u16 * id)924 static inline bool ata_id_has_trim(const u16 *id)
925 {
926 	if (ata_id_major_version(id) >= 7 &&
927 	    (id[ATA_ID_DATA_SET_MGMT] & 1))
928 		return true;
929 	return false;
930 }
931 
ata_id_has_zero_after_trim(const u16 * id)932 static inline bool ata_id_has_zero_after_trim(const u16 *id)
933 {
934 	/* DSM supported, deterministic read, and read zero after trim set */
935 	if (ata_id_has_trim(id) &&
936 	    (id[ATA_ID_ADDITIONAL_SUPP] & 0x4020) == 0x4020)
937 		return true;
938 
939 	return false;
940 }
941 
ata_id_current_chs_valid(const u16 * id)942 static inline bool ata_id_current_chs_valid(const u16 *id)
943 {
944 	/* For ATA-1 devices, if the INITIALIZE DEVICE PARAMETERS command
945 	   has not been issued to the device then the values of
946 	   id[ATA_ID_CUR_CYLS] to id[ATA_ID_CUR_SECTORS] are vendor specific. */
947 	return (id[ATA_ID_FIELD_VALID] & 1) && /* Current translation valid */
948 		id[ATA_ID_CUR_CYLS] &&  /* cylinders in current translation */
949 		id[ATA_ID_CUR_HEADS] &&  /* heads in current translation */
950 		id[ATA_ID_CUR_HEADS] <= 16 &&
951 		id[ATA_ID_CUR_SECTORS];    /* sectors in current translation */
952 }
953 
ata_id_is_cfa(const u16 * id)954 static inline bool ata_id_is_cfa(const u16 *id)
955 {
956 	if ((id[ATA_ID_CONFIG] == 0x848A) ||	/* Traditional CF */
957 	    (id[ATA_ID_CONFIG] == 0x844A))	/* Delkin Devices CF */
958 		return true;
959 	/*
960 	 * CF specs don't require specific value in the word 0 anymore and yet
961 	 * they forbid to report the ATA version in the word 80 and require the
962 	 * CFA feature set support to be indicated in the word 83 in this case.
963 	 * Unfortunately, some cards only follow either of this requirements,
964 	 * and while those that don't indicate CFA feature support need some
965 	 * sort of quirk list, it seems impractical for the ones that do...
966 	 */
967 	return (id[ATA_ID_COMMAND_SET_2] & 0xC004) == 0x4004;
968 }
969 
ata_id_is_ssd(const u16 * id)970 static inline bool ata_id_is_ssd(const u16 *id)
971 {
972 	return id[ATA_ID_ROT_SPEED] == 0x01;
973 }
974 
ata_id_zoned_cap(const u16 * id)975 static inline u8 ata_id_zoned_cap(const u16 *id)
976 {
977 	return (id[ATA_ID_ADDITIONAL_SUPP] & 0x3);
978 }
979 
ata_id_pio_need_iordy(const u16 * id,const u8 pio)980 static inline bool ata_id_pio_need_iordy(const u16 *id, const u8 pio)
981 {
982 	/* CF spec. r4.1 Table 22 says no IORDY on PIO5 and PIO6. */
983 	if (pio > 4 && ata_id_is_cfa(id))
984 		return false;
985 	/* For PIO3 and higher it is mandatory. */
986 	if (pio > 2)
987 		return true;
988 	/* Turn it on when possible. */
989 	return ata_id_has_iordy(id);
990 }
991 
ata_drive_40wire(const u16 * dev_id)992 static inline bool ata_drive_40wire(const u16 *dev_id)
993 {
994 	if (ata_id_is_sata(dev_id))
995 		return false;	/* SATA */
996 	if ((dev_id[ATA_ID_HW_CONFIG] & 0xE000) == 0x6000)
997 		return false;	/* 80 wire */
998 	return true;
999 }
1000 
ata_drive_40wire_relaxed(const u16 * dev_id)1001 static inline bool ata_drive_40wire_relaxed(const u16 *dev_id)
1002 {
1003 	if ((dev_id[ATA_ID_HW_CONFIG] & 0x2000) == 0x2000)
1004 		return false;	/* 80 wire */
1005 	return true;
1006 }
1007 
atapi_cdb_len(const u16 * dev_id)1008 static inline int atapi_cdb_len(const u16 *dev_id)
1009 {
1010 	u16 tmp = dev_id[ATA_ID_CONFIG] & 0x3;
1011 	switch (tmp) {
1012 	case 0:		return 12;
1013 	case 1:		return 16;
1014 	default:	return -1;
1015 	}
1016 }
1017 
atapi_command_packet_set(const u16 * dev_id)1018 static inline int atapi_command_packet_set(const u16 *dev_id)
1019 {
1020 	return (dev_id[ATA_ID_CONFIG] >> 8) & 0x1f;
1021 }
1022 
atapi_id_dmadir(const u16 * dev_id)1023 static inline bool atapi_id_dmadir(const u16 *dev_id)
1024 {
1025 	return ata_id_major_version(dev_id) >= 7 && (dev_id[62] & 0x8000);
1026 }
1027 
ata_ok(u8 status)1028 static inline bool ata_ok(u8 status)
1029 {
1030 	return ((status & (ATA_BUSY | ATA_DRDY | ATA_DF | ATA_DRQ | ATA_ERR))
1031 			== ATA_DRDY);
1032 }
1033 
lba_28_ok(u64 block,u32 n_block)1034 static inline bool lba_28_ok(u64 block, u32 n_block)
1035 {
1036 	/* check the ending block number: must be LESS THAN 0x0fffffff */
1037 	return ((block + n_block) < ((1 << 28) - 1)) && (n_block <= ATA_MAX_SECTORS);
1038 }
1039 
lba_48_ok(u64 block,u32 n_block)1040 static inline bool lba_48_ok(u64 block, u32 n_block)
1041 {
1042 	/* check the ending block number */
1043 	return ((block + n_block - 1) < ((u64)1 << 48)) && (n_block <= ATA_MAX_SECTORS_LBA48);
1044 }
1045 
1046 #define sata_pmp_gscr_vendor(gscr)	((gscr)[SATA_PMP_GSCR_PROD_ID] & 0xffff)
1047 #define sata_pmp_gscr_devid(gscr)	((gscr)[SATA_PMP_GSCR_PROD_ID] >> 16)
1048 #define sata_pmp_gscr_rev(gscr)		(((gscr)[SATA_PMP_GSCR_REV] >> 8) & 0xff)
1049 #define sata_pmp_gscr_ports(gscr)	((gscr)[SATA_PMP_GSCR_PORT_INFO] & 0xf)
1050 
1051 #endif /* __LINUX_ATA_H__ */
1052