summaryrefslogtreecommitdiff
path: root/drivers/scsi/ufs/ufs.h
blob: cb80b9670bfe80d6172bc346536c2321b53cdc8e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * Universal Flash Storage Host controller driver
 * Copyright (C) 2011-2013 Samsung India Software Operations
 *
 * Authors:
 *	Santosh Yaraganavi <santosh.sy@samsung.com>
 *	Vinayak Holikatti <h.vinayak@samsung.com>
 */

#ifndef _UFS_H
#define _UFS_H

#include <linux/mutex.h>
#include <linux/types.h>
#include <uapi/scsi/scsi_bsg_ufs.h>

#define GENERAL_UPIU_REQUEST_SIZE (sizeof(struct utp_upiu_req))
#define QUERY_DESC_MAX_SIZE       255
#define QUERY_DESC_MIN_SIZE       2
#define QUERY_DESC_HDR_SIZE       2
#define QUERY_OSF_SIZE            (GENERAL_UPIU_REQUEST_SIZE - \
					(sizeof(struct utp_upiu_header)))
#define UFS_SENSE_SIZE	18

#define UPIU_HEADER_DWORD(byte3, byte2, byte1, byte0)\
			cpu_to_be32((byte3 << 24) | (byte2 << 16) |\
			 (byte1 << 8) | (byte0))
/*
 * UFS device may have standard LUs and LUN id could be from 0x00 to
 * 0x7F. Standard LUs use "Peripheral Device Addressing Format".
 * UFS device may also have the Well Known LUs (also referred as W-LU)
 * which again could be from 0x00 to 0x7F. For W-LUs, device only use
 * the "Extended Addressing Format" which means the W-LUNs would be
 * from 0xc100 (SCSI_W_LUN_BASE) onwards.
 * This means max. LUN number reported from UFS device could be 0xC17F.
 */
#define UFS_UPIU_MAX_UNIT_NUM_ID	0x7F
#define UFS_MAX_LUNS		(SCSI_W_LUN_BASE + UFS_UPIU_MAX_UNIT_NUM_ID)
#define UFS_UPIU_WLUN_ID	(1 << 7)
#define UFS_RPMB_UNIT		0xC4

/* WriteBooster buffer is available only for the logical unit from 0 to 7 */
#define UFS_UPIU_MAX_WB_LUN_ID	8

/* Well known logical unit id in LUN field of UPIU */
enum {
	UFS_UPIU_REPORT_LUNS_WLUN	= 0x81,
	UFS_UPIU_UFS_DEVICE_WLUN	= 0xD0,
	UFS_UPIU_BOOT_WLUN		= 0xB0,
	UFS_UPIU_RPMB_WLUN		= 0xC4,
};

/*
 * UFS Protocol Information Unit related definitions
 */

/* Task management functions */
enum {
	UFS_ABORT_TASK		= 0x01,
	UFS_ABORT_TASK_SET	= 0x02,
	UFS_CLEAR_TASK_SET	= 0x04,
	UFS_LOGICAL_RESET	= 0x08,
	UFS_QUERY_TASK		= 0x80,
	UFS_QUERY_TASK_SET	= 0x81,
};

/* UTP UPIU Transaction Codes Initiator to Target */
enum {
	UPIU_TRANSACTION_NOP_OUT	= 0x00,
	UPIU_TRANSACTION_COMMAND	= 0x01,
	UPIU_TRANSACTION_DATA_OUT	= 0x02,
	UPIU_TRANSACTION_TASK_REQ	= 0x04,
	UPIU_TRANSACTION_QUERY_REQ	= 0x16,
};

/* UTP UPIU Transaction Codes Target to Initiator */
enum {
	UPIU_TRANSACTION_NOP_IN		= 0x20,
	UPIU_TRANSACTION_RESPONSE	= 0x21,
	UPIU_TRANSACTION_DATA_IN	= 0x22,
	UPIU_TRANSACTION_TASK_RSP	= 0x24,
	UPIU_TRANSACTION_READY_XFER	= 0x31,
	UPIU_TRANSACTION_QUERY_RSP	= 0x36,
	UPIU_TRANSACTION_REJECT_UPIU	= 0x3F,
};

/* UPIU Read/Write flags */
enum {
	UPIU_CMD_FLAGS_NONE	= 0x00,
	UPIU_CMD_FLAGS_WRITE	= 0x20,
	UPIU_CMD_FLAGS_READ	= 0x40,
};

/* UPIU Task Attributes */
enum {
	UPIU_TASK_ATTR_SIMPLE	= 0x00,
	UPIU_TASK_ATTR_ORDERED	= 0x01,
	UPIU_TASK_ATTR_HEADQ	= 0x02,
	UPIU_TASK_ATTR_ACA	= 0x03,
};

/* UPIU Query request function */
enum {
	UPIU_QUERY_FUNC_STANDARD_READ_REQUEST           = 0x01,
	UPIU_QUERY_FUNC_STANDARD_WRITE_REQUEST          = 0x81,
};

/* Flag idn for Query Requests*/
enum flag_idn {
	QUERY_FLAG_IDN_FDEVICEINIT			= 0x01,
	QUERY_FLAG_IDN_PERMANENT_WPE			= 0x02,
	QUERY_FLAG_IDN_PWR_ON_WPE			= 0x03,
	QUERY_FLAG_IDN_BKOPS_EN				= 0x04,
	QUERY_FLAG_IDN_LIFE_SPAN_MODE_ENABLE		= 0x05,
	QUERY_FLAG_IDN_PURGE_ENABLE			= 0x06,
	QUERY_FLAG_IDN_RESERVED2			= 0x07,
	QUERY_FLAG_IDN_FPHYRESOURCEREMOVAL		= 0x08,
	QUERY_FLAG_IDN_BUSY_RTC				= 0x09,
	QUERY_FLAG_IDN_RESERVED3			= 0x0A,
	QUERY_FLAG_IDN_PERMANENTLY_DISABLE_FW_UPDATE	= 0x0B,
	QUERY_FLAG_IDN_WB_EN                            = 0x0E,
	QUERY_FLAG_IDN_WB_BUFF_FLUSH_EN                 = 0x0F,
	QUERY_FLAG_IDN_WB_BUFF_FLUSH_DURING_HIBERN8     = 0x10,
};

/* Attribute idn for Query requests */
enum attr_idn {
	QUERY_ATTR_IDN_BOOT_LU_EN		= 0x00,
	QUERY_ATTR_IDN_RESERVED			= 0x01,
	QUERY_ATTR_IDN_POWER_MODE		= 0x02,
	QUERY_ATTR_IDN_ACTIVE_ICC_LVL		= 0x03,
	QUERY_ATTR_IDN_OOO_DATA_EN		= 0x04,
	QUERY_ATTR_IDN_BKOPS_STATUS		= 0x05,
	QUERY_ATTR_IDN_PURGE_STATUS		= 0x06,
	QUERY_ATTR_IDN_MAX_DATA_IN		= 0x07,
	QUERY_ATTR_IDN_MAX_DATA_OUT		= 0x08,
	QUERY_ATTR_IDN_DYN_CAP_NEEDED		= 0x09,
	QUERY_ATTR_IDN_REF_CLK_FREQ		= 0x0A,
	QUERY_ATTR_IDN_CONF_DESC_LOCK		= 0x0B,
	QUERY_ATTR_IDN_MAX_NUM_OF_RTT		= 0x0C,
	QUERY_ATTR_IDN_EE_CONTROL		= 0x0D,
	QUERY_ATTR_IDN_EE_STATUS		= 0x0E,
	QUERY_ATTR_IDN_SECONDS_PASSED		= 0x0F,
	QUERY_ATTR_IDN_CNTX_CONF		= 0x10,
	QUERY_ATTR_IDN_CORR_PRG_BLK_NUM		= 0x11,
	QUERY_ATTR_IDN_RESERVED2		= 0x12,
	QUERY_ATTR_IDN_RESERVED3		= 0x13,
	QUERY_ATTR_IDN_FFU_STATUS		= 0x14,
	QUERY_ATTR_IDN_PSA_STATE		= 0x15,
	QUERY_ATTR_IDN_PSA_DATA_SIZE		= 0x16,
	QUERY_ATTR_IDN_REF_CLK_GATING_WAIT_TIME	= 0x17,
	QUERY_ATTR_IDN_WB_FLUSH_STATUS	        = 0x1C,
	QUERY_ATTR_IDN_AVAIL_WB_BUFF_SIZE       = 0x1D,
	QUERY_ATTR_IDN_WB_BUFF_LIFE_TIME_EST    = 0x1E,
	QUERY_ATTR_IDN_CURR_WB_BUFF_SIZE        = 0x1F,
};

/* Descriptor idn for Query requests */
enum desc_idn {
	QUERY_DESC_IDN_DEVICE		= 0x0,
	QUERY_DESC_IDN_CONFIGURATION	= 0x1,
	QUERY_DESC_IDN_UNIT		= 0x2,
	QUERY_DESC_IDN_RFU_0		= 0x3,
	QUERY_DESC_IDN_INTERCONNECT	= 0x4,
	QUERY_DESC_IDN_STRING		= 0x5,
	QUERY_DESC_IDN_RFU_1		= 0x6,
	QUERY_DESC_IDN_GEOMETRY		= 0x7,
	QUERY_DESC_IDN_POWER		= 0x8,
	QUERY_DESC_IDN_HEALTH           = 0x9,
	QUERY_DESC_IDN_MAX,
};

enum desc_header_offset {
	QUERY_DESC_LENGTH_OFFSET	= 0x00,
	QUERY_DESC_DESC_TYPE_OFFSET	= 0x01,
};

/* Unit descriptor parameters offsets in bytes*/
enum unit_desc_param {
	UNIT_DESC_PARAM_LEN			= 0x0,
	UNIT_DESC_PARAM_TYPE			= 0x1,
	UNIT_DESC_PARAM_UNIT_INDEX		= 0x2,
	UNIT_DESC_PARAM_LU_ENABLE		= 0x3,
	UNIT_DESC_PARAM_BOOT_LUN_ID		= 0x4,
	UNIT_DESC_PARAM_LU_WR_PROTECT		= 0x5,
	UNIT_DESC_PARAM_LU_Q_DEPTH		= 0x6,
	UNIT_DESC_PARAM_PSA_SENSITIVE		= 0x7,
	UNIT_DESC_PARAM_MEM_TYPE		= 0x8,
	UNIT_DESC_PARAM_DATA_RELIABILITY	= 0x9,
	UNIT_DESC_PARAM_LOGICAL_BLK_SIZE	= 0xA,
	UNIT_DESC_PARAM_LOGICAL_BLK_COUNT	= 0xB,
	UNIT_DESC_PARAM_ERASE_BLK_SIZE		= 0x13,
	UNIT_DESC_PARAM_PROVISIONING_TYPE	= 0x17,
	UNIT_DESC_PARAM_PHY_MEM_RSRC_CNT	= 0x18,
	UNIT_DESC_PARAM_CTX_CAPABILITIES	= 0x20,
	UNIT_DESC_PARAM_LARGE_UNIT_SIZE_M1	= 0x22,
	UNIT_DESC_PARAM_WB_BUF_ALLOC_UNITS	= 0x29,
};

/* Device descriptor parameters offsets in bytes*/
enum device_desc_param {
	DEVICE_DESC_PARAM_LEN			= 0x0,
	DEVICE_DESC_PARAM_TYPE			= 0x1,
	DEVICE_DESC_PARAM_DEVICE_TYPE		= 0x2,
	DEVICE_DESC_PARAM_DEVICE_CLASS		= 0x3,
	DEVICE_DESC_PARAM_DEVICE_SUB_CLASS	= 0x4,
	DEVICE_DESC_PARAM_PRTCL			= 0x5,
	DEVICE_DESC_PARAM_NUM_LU		= 0x6,
	DEVICE_DESC_PARAM_NUM_WLU		= 0x7,
	DEVICE_DESC_PARAM_BOOT_ENBL		= 0x8,
	DEVICE_DESC_PARAM_DESC_ACCSS_ENBL	= 0x9,
	DEVICE_DESC_PARAM_INIT_PWR_MODE		= 0xA,
	DEVICE_DESC_PARAM_HIGH_PR_LUN		= 0xB,
	DEVICE_DESC_PARAM_SEC_RMV_TYPE		= 0xC,
	DEVICE_DESC_PARAM_SEC_LU		= 0xD,
	DEVICE_DESC_PARAM_BKOP_TERM_LT		= 0xE,
	DEVICE_DESC_PARAM_ACTVE_ICC_LVL		= 0xF,
	DEVICE_DESC_PARAM_SPEC_VER		= 0x10,
	DEVICE_DESC_PARAM_MANF_DATE		= 0x12,
	DEVICE_DESC_PARAM_MANF_NAME		= 0x14,
	DEVICE_DESC_PARAM_PRDCT_NAME		= 0x15,
	DEVICE_DESC_PARAM_SN			= 0x16,
	DEVICE_DESC_PARAM_OEM_ID		= 0x17,
	DEVICE_DESC_PARAM_MANF_ID		= 0x18,
	DEVICE_DESC_PARAM_UD_OFFSET		= 0x1A,
	DEVICE_DESC_PARAM_UD_LEN		= 0x1B,
	DEVICE_DESC_PARAM_RTT_CAP		= 0x1C,
	DEVICE_DESC_PARAM_FRQ_RTC		= 0x1D,
	DEVICE_DESC_PARAM_UFS_FEAT		= 0x1F,
	DEVICE_DESC_PARAM_FFU_TMT		= 0x20,
	DEVICE_DESC_PARAM_Q_DPTH		= 0x21,
	DEVICE_DESC_PARAM_DEV_VER		= 0x22,
	DEVICE_DESC_PARAM_NUM_SEC_WPA		= 0x24,
	DEVICE_DESC_PARAM_PSA_MAX_DATA		= 0x25,
	DEVICE_DESC_PARAM_PSA_TMT		= 0x29,
	DEVICE_DESC_PARAM_PRDCT_REV		= 0x2A,
	DEVICE_DESC_PARAM_EXT_UFS_FEATURE_SUP	= 0x4F,
	DEVICE_DESC_PARAM_WB_PRESRV_USRSPC_EN	= 0x53,
	DEVICE_DESC_PARAM_WB_TYPE		= 0x54,
	DEVICE_DESC_PARAM_WB_SHARED_ALLOC_UNITS = 0x55,
};

/* Interconnect descriptor parameters offsets in bytes*/
enum interconnect_desc_param {
	INTERCONNECT_DESC_PARAM_LEN		= 0x0,
	INTERCONNECT_DESC_PARAM_TYPE		= 0x1,
	INTERCONNECT_DESC_PARAM_UNIPRO_VER	= 0x2,
	INTERCONNECT_DESC_PARAM_MPHY_VER	= 0x4,
};

/* Geometry descriptor parameters offsets in bytes*/
enum geometry_desc_param {
	GEOMETRY_DESC_PARAM_LEN			= 0x0,
	GEOMETRY_DESC_PARAM_TYPE		= 0x1,
	GEOMETRY_DESC_PARAM_DEV_CAP		= 0x4,
	GEOMETRY_DESC_PARAM_MAX_NUM_LUN		= 0xC,
	GEOMETRY_DESC_PARAM_SEG_SIZE		= 0xD,
	GEOMETRY_DESC_PARAM_ALLOC_UNIT_SIZE	= 0x11,
	GEOMETRY_DESC_PARAM_MIN_BLK_SIZE	= 0x12,
	GEOMETRY_DESC_PARAM_OPT_RD_BLK_SIZE	= 0x13,
	GEOMETRY_DESC_PARAM_OPT_WR_BLK_SIZE	= 0x14,
	GEOMETRY_DESC_PARAM_MAX_IN_BUF_SIZE	= 0x15,
	GEOMETRY_DESC_PARAM_MAX_OUT_BUF_SIZE	= 0x16,
	GEOMETRY_DESC_PARAM_RPMB_RW_SIZE	= 0x17,
	GEOMETRY_DESC_PARAM_DYN_CAP_RSRC_PLC	= 0x18,
	GEOMETRY_DESC_PARAM_DATA_ORDER		= 0x19,
	GEOMETRY_DESC_PARAM_MAX_NUM_CTX		= 0x1A,
	GEOMETRY_DESC_PARAM_TAG_UNIT_SIZE	= 0x1B,
	GEOMETRY_DESC_PARAM_TAG_RSRC_SIZE	= 0x1C,
	GEOMETRY_DESC_PARAM_SEC_RM_TYPES	= 0x1D,
	GEOMETRY_DESC_PARAM_MEM_TYPES		= 0x1E,
	GEOMETRY_DESC_PARAM_SCM_MAX_NUM_UNITS	= 0x20,
	GEOMETRY_DESC_PARAM_SCM_CAP_ADJ_FCTR	= 0x24,
	GEOMETRY_DESC_PARAM_NPM_MAX_NUM_UNITS	= 0x26,
	GEOMETRY_DESC_PARAM_NPM_CAP_ADJ_FCTR	= 0x2A,
	GEOMETRY_DESC_PARAM_ENM1_MAX_NUM_UNITS	= 0x2C,
	GEOMETRY_DESC_PARAM_ENM1_CAP_ADJ_FCTR	= 0x30,
	GEOMETRY_DESC_PARAM_ENM2_MAX_NUM_UNITS	= 0x32,
	GEOMETRY_DESC_PARAM_ENM2_CAP_ADJ_FCTR	= 0x36,
	GEOMETRY_DESC_PARAM_ENM3_MAX_NUM_UNITS	= 0x38,
	GEOMETRY_DESC_PARAM_ENM3_CAP_ADJ_FCTR	= 0x3C,
	GEOMETRY_DESC_PARAM_ENM4_MAX_NUM_UNITS	= 0x3E,
	GEOMETRY_DESC_PARAM_ENM4_CAP_ADJ_FCTR	= 0x42,
	GEOMETRY_DESC_PARAM_OPT_LOG_BLK_SIZE	= 0x44,
	GEOMETRY_DESC_PARAM_WB_MAX_ALLOC_UNITS	= 0x4F,
	GEOMETRY_DESC_PARAM_WB_MAX_WB_LUNS	= 0x53,
	GEOMETRY_DESC_PARAM_WB_BUFF_CAP_ADJ	= 0x54,
	GEOMETRY_DESC_PARAM_WB_SUP_RED_TYPE	= 0x55,
	GEOMETRY_DESC_PARAM_WB_SUP_WB_TYPE	= 0x56,
};

/* Health descriptor parameters offsets in bytes*/
enum health_desc_param {
	HEALTH_DESC_PARAM_LEN			= 0x0,
	HEALTH_DESC_PARAM_TYPE			= 0x1,
	HEALTH_DESC_PARAM_EOL_INFO		= 0x2,
	HEALTH_DESC_PARAM_LIFE_TIME_EST_A	= 0x3,
	HEALTH_DESC_PARAM_LIFE_TIME_EST_B	= 0x4,
};

/* WriteBooster buffer mode */
enum {
	WB_BUF_MODE_LU_DEDICATED	= 0x0,
	WB_BUF_MODE_SHARED		= 0x1,
};

/*
 * Logical Unit Write Protect
 * 00h: LU not write protected
 * 01h: LU write protected when fPowerOnWPEn =1
 * 02h: LU permanently write protected when fPermanentWPEn =1
 */
enum ufs_lu_wp_type {
	UFS_LU_NO_WP		= 0x00,
	UFS_LU_POWER_ON_WP	= 0x01,
	UFS_LU_PERM_WP		= 0x02,
};

/* bActiveICCLevel parameter current units */
enum {
	UFSHCD_NANO_AMP		= 0,
	UFSHCD_MICRO_AMP	= 1,
	UFSHCD_MILI_AMP		= 2,
	UFSHCD_AMP		= 3,
};

/* Possible values for dExtendedUFSFeaturesSupport */
enum {
	UFS_DEV_WRITE_BOOSTER_SUP	= BIT(8),
};

#define POWER_DESC_MAX_ACTV_ICC_LVLS		16

/* Attribute  bActiveICCLevel parameter bit masks definitions */
#define ATTR_ICC_LVL_UNIT_OFFSET	14
#define ATTR_ICC_LVL_UNIT_MASK		(0x3 << ATTR_ICC_LVL_UNIT_OFFSET)
#define ATTR_ICC_LVL_VALUE_MASK		0x3FF

/* Power descriptor parameters offsets in bytes */
enum power_desc_param_offset {
	PWR_DESC_LEN			= 0x0,
	PWR_DESC_TYPE			= 0x1,
	PWR_DESC_ACTIVE_LVLS_VCC_0	= 0x2,
	PWR_DESC_ACTIVE_LVLS_VCCQ_0	= 0x22,
	PWR_DESC_ACTIVE_LVLS_VCCQ2_0	= 0x42,
};

/* Exception event mask values */
enum {
	MASK_EE_STATUS			= 0xFFFF,
	MASK_EE_DYNCAP_EVENT		= BIT(0),
	MASK_EE_SYSPOOL_EVENT		= BIT(1),
	MASK_EE_URGENT_BKOPS		= BIT(2),
	MASK_EE_TOO_HIGH_TEMP		= BIT(3),
	MASK_EE_TOO_LOW_TEMP		= BIT(4),
	MASK_EE_WRITEBOOSTER_EVENT	= BIT(5),
	MASK_EE_PERFORMANCE_THROTTLING	= BIT(6),
};

/* Background operation status */
enum bkops_status {
	BKOPS_STATUS_NO_OP               = 0x0,
	BKOPS_STATUS_NON_CRITICAL        = 0x1,
	BKOPS_STATUS_PERF_IMPACT         = 0x2,
	BKOPS_STATUS_CRITICAL            = 0x3,
	BKOPS_STATUS_MAX		 = BKOPS_STATUS_CRITICAL,
};

/* UTP QUERY Transaction Specific Fields OpCode */
enum query_opcode {
	UPIU_QUERY_OPCODE_NOP		= 0x0,
	UPIU_QUERY_OPCODE_READ_DESC	= 0x1,
	UPIU_QUERY_OPCODE_WRITE_DESC	= 0x2,
	UPIU_QUERY_OPCODE_READ_ATTR	= 0x3,
	UPIU_QUERY_OPCODE_WRITE_ATTR	= 0x4,
	UPIU_QUERY_OPCODE_READ_FLAG	= 0x5,
	UPIU_QUERY_OPCODE_SET_FLAG	= 0x6,
	UPIU_QUERY_OPCODE_CLEAR_FLAG	= 0x7,
	UPIU_QUERY_OPCODE_TOGGLE_FLAG	= 0x8,
};

/* bRefClkFreq attribute values */
enum ufs_ref_clk_freq {
	REF_CLK_FREQ_19_2_MHZ	= 0,
	REF_CLK_FREQ_26_MHZ	= 1,
	REF_CLK_FREQ_38_4_MHZ	= 2,
	REF_CLK_FREQ_52_MHZ	= 3,
	REF_CLK_FREQ_INVAL	= -1,
};

struct ufs_ref_clk {
	unsigned long freq_hz;
	enum ufs_ref_clk_freq val;
};

/* Query response result code */
enum {
	QUERY_RESULT_SUCCESS                    = 0x00,
	QUERY_RESULT_NOT_READABLE               = 0xF6,
	QUERY_RESULT_NOT_WRITEABLE              = 0xF7,
	QUERY_RESULT_ALREADY_WRITTEN            = 0xF8,
	QUERY_RESULT_INVALID_LENGTH             = 0xF9,
	QUERY_RESULT_INVALID_VALUE              = 0xFA,
	QUERY_RESULT_INVALID_SELECTOR           = 0xFB,
	QUERY_RESULT_INVALID_INDEX              = 0xFC,
	QUERY_RESULT_INVALID_IDN                = 0xFD,
	QUERY_RESULT_INVALID_OPCODE             = 0xFE,
	QUERY_RESULT_GENERAL_FAILURE            = 0xFF,
};

/* UTP Transfer Request Command Type (CT) */
enum {
	UPIU_COMMAND_SET_TYPE_SCSI	= 0x0,
	UPIU_COMMAND_SET_TYPE_UFS	= 0x1,
	UPIU_COMMAND_SET_TYPE_QUERY	= 0x2,
};

/* UTP Transfer Request Command Offset */
#define UPIU_COMMAND_TYPE_OFFSET	28

/* Offset of the response code in the UPIU header */
#define UPIU_RSP_CODE_OFFSET		8

enum {
	MASK_SCSI_STATUS		= 0xFF,
	MASK_TASK_RESPONSE              = 0xFF00,
	MASK_RSP_UPIU_RESULT            = 0xFFFF,
	MASK_QUERY_DATA_SEG_LEN         = 0xFFFF,
	MASK_RSP_UPIU_DATA_SEG_LEN	= 0xFFFF,
	MASK_RSP_EXCEPTION_EVENT        = 0x10000,
	MASK_TM_SERVICE_RESP		= 0xFF,
	MASK_TM_FUNC			= 0xFF,
};

/* Task management service response */
enum {
	UPIU_TASK_MANAGEMENT_FUNC_COMPL		= 0x00,
	UPIU_TASK_MANAGEMENT_FUNC_NOT_SUPPORTED = 0x04,
	UPIU_TASK_MANAGEMENT_FUNC_SUCCEEDED	= 0x08,
	UPIU_TASK_MANAGEMENT_FUNC_FAILED	= 0x05,
	UPIU_INCORRECT_LOGICAL_UNIT_NO		= 0x09,
};

/* UFS device power modes */
enum ufs_dev_pwr_mode {
	UFS_ACTIVE_PWR_MODE	= 1,
	UFS_SLEEP_PWR_MODE	= 2,
	UFS_POWERDOWN_PWR_MODE	= 3,
	UFS_DEEPSLEEP_PWR_MODE	= 4,
};

#define UFS_WB_BUF_REMAIN_PERCENT(val) ((val) / 10)

/**
 * struct utp_cmd_rsp - Response UPIU structure
 * @residual_transfer_count: Residual transfer count DW-3
 * @reserved: Reserved double words DW-4 to DW-7
 * @sense_data_len: Sense data length DW-8 U16
 * @sense_data: Sense data field DW-8 to DW-12
 */
struct utp_cmd_rsp {
	__be32 residual_transfer_count;
	__be32 reserved[4];
	__be16 sense_data_len;
	u8 sense_data[UFS_SENSE_SIZE];
};

/**
 * struct utp_upiu_rsp - general upiu response structure
 * @header: UPIU header structure DW-0 to DW-2
 * @sr: fields structure for scsi command DW-3 to DW-12
 * @qr: fields structure for query request DW-3 to DW-7
 */
struct utp_upiu_rsp {
	struct utp_upiu_header header;
	union {
		struct utp_cmd_rsp sr;
		struct utp_upiu_query qr;
	};
};

/**
 * struct ufs_query_req - parameters for building a query request
 * @query_func: UPIU header query function
 * @upiu_req: the query request data
 */
struct ufs_query_req {
	u8 query_func;
	struct utp_upiu_query upiu_req;
};

/**
 * struct ufs_query_resp - UPIU QUERY
 * @response: device response code
 * @upiu_res: query response data
 */
struct ufs_query_res {
	u8 response;
	struct utp_upiu_query upiu_res;
};

#define UFS_VREG_VCC_MIN_UV	   2700000 /* uV */
#define UFS_VREG_VCC_MAX_UV	   3600000 /* uV */
#define UFS_VREG_VCC_1P8_MIN_UV    1700000 /* uV */
#define UFS_VREG_VCC_1P8_MAX_UV    1950000 /* uV */
#define UFS_VREG_VCCQ_MIN_UV	   1140000 /* uV */
#define UFS_VREG_VCCQ_MAX_UV	   1260000 /* uV */
#define UFS_VREG_VCCQ2_MIN_UV	   1700000 /* uV */
#define UFS_VREG_VCCQ2_MAX_UV	   1950000 /* uV */

/*
 * VCCQ & VCCQ2 current requirement when UFS device is in sleep state
 * and link is in Hibern8 state.
 */
#define UFS_VREG_LPM_LOAD_UA	1000 /* uA */

struct ufs_vreg {
	struct regulator *reg;
	const char *name;
	bool always_on;
	bool enabled;
	int min_uV;
	int max_uV;
	int max_uA;
};

struct ufs_vreg_info {
	struct ufs_vreg *vcc;
	struct ufs_vreg *vccq;
	struct ufs_vreg *vccq2;
	struct ufs_vreg *vdd_hba;
};

struct ufs_dev_info {
	bool	f_power_on_wp_en;
	/* Keeps information if any of the LU is power on write protected */
	bool	is_lu_power_on_wp;
	/* Maximum number of general LU supported by the UFS device */
	u8	max_lu_supported;
	u16	wmanufacturerid;
	/*UFS device Product Name */
	u8	*model;
	u16	wspecversion;
	u32	clk_gating_wait_us;

	/* UFS WB related flags */
	bool    wb_enabled;
	bool    wb_buf_flush_enabled;
	u8	wb_dedicated_lu;
	u8      wb_buffer_type;

	bool	b_rpm_dev_flush_capable;
	u8	b_presrv_uspc_en;
};

/*
 * This enum is used in string mapping in include/trace/events/ufs.h.
 */
enum ufs_trace_str_t {
	UFS_CMD_SEND, UFS_CMD_COMP, UFS_DEV_COMP,
	UFS_QUERY_SEND, UFS_QUERY_COMP, UFS_QUERY_ERR,
	UFS_TM_SEND, UFS_TM_COMP, UFS_TM_ERR
};

/*
 * Transaction Specific Fields (TSF) type in the UPIU package, this enum is
 * used in include/trace/events/ufs.h for UFS command trace.
 */
enum ufs_trace_tsf_t {
	UFS_TSF_CDB, UFS_TSF_OSF, UFS_TSF_TM_INPUT, UFS_TSF_TM_OUTPUT
};

/**
 * ufs_is_valid_unit_desc_lun - checks if the given LUN has a unit descriptor
 * @dev_info: pointer of instance of struct ufs_dev_info
 * @lun: LU number to check
 * @return: true if the lun has a matching unit descriptor, false otherwise
 */
static inline bool ufs_is_valid_unit_desc_lun(struct ufs_dev_info *dev_info,
		u8 lun, u8 param_offset)
{
	if (!dev_info || !dev_info->max_lu_supported) {
		pr_err("Max General LU supported by UFS isn't initialized\n");
		return false;
	}
	/* WB is available only for the logical unit from 0 to 7 */
	if (param_offset == UNIT_DESC_PARAM_WB_BUF_ALLOC_UNITS)
		return lun < UFS_UPIU_MAX_WB_LUN_ID;
	return lun == UFS_UPIU_RPMB_WLUN || (lun < dev_info->max_lu_supported);
}

#endif /* End of Header */