2 * Universal Flash Storage Host controller driver
4 * This code is based on drivers/scsi/ufs/ufs.h
5 * Copyright (C) 2011-2013 Samsung India Software Operations
8 * Santosh Yaraganavi <santosh.sy@samsung.com>
9 * Vinayak Holikatti <h.vinayak@samsung.com>
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License
13 * as published by the Free Software Foundation; either version 2
14 * of the License, or (at your option) any later version.
15 * See the COPYING file in the top-level directory or visit
16 * <http://www.gnu.org/licenses/gpl-2.0.html>
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
23 * This program is provided "AS IS" and "WITH ALL FAULTS" and
24 * without warranty of any kind. You are solely responsible for
25 * determining the appropriateness of using and distributing
26 * the program and assume all risks associated with your exercise
27 * of rights with respect to the program, including but not limited
28 * to infringement of third party rights, the risks and costs of
29 * program errors, damage to or loss of data, programs or equipment,
30 * and unavailability or interruption of operations. Under no
31 * circumstances will the contributor of this Program be liable for
32 * any damages of any kind arising from your use or distribution of
39 #include <linux/mutex.h>
40 #include <linux/types.h>
42 #define MAX_CDB_SIZE 16
43 #define GENERAL_UPIU_REQUEST_SIZE 32
44 #define QUERY_DESC_MAX_SIZE 255
45 #define QUERY_DESC_MIN_SIZE 2
46 #define QUERY_OSF_SIZE (GENERAL_UPIU_REQUEST_SIZE - \
47 (sizeof(struct utp_upiu_header)))
49 #define UPIU_HEADER_DWORD(byte3, byte2, byte1, byte0)\
50 cpu_to_be32((byte3 << 24) | (byte2 << 16) |\
51 (byte1 << 8) | (byte0))
53 #define UFS_UPIU_MAX_GENERAL_LUN 8
56 * UFS Protocol Information Unit related definitions
59 /* Task management functions */
61 UFS_ABORT_TASK = 0x01,
62 UFS_ABORT_TASK_SET = 0x02,
63 UFS_CLEAR_TASK_SET = 0x04,
64 UFS_LOGICAL_RESET = 0x08,
65 UFS_QUERY_TASK = 0x80,
66 UFS_QUERY_TASK_SET = 0x81,
69 /* UTP UPIU Transaction Codes Initiator to Target */
71 UPIU_TRANSACTION_NOP_OUT = 0x00,
72 UPIU_TRANSACTION_COMMAND = 0x01,
73 UPIU_TRANSACTION_DATA_OUT = 0x02,
74 UPIU_TRANSACTION_TASK_REQ = 0x04,
75 UPIU_TRANSACTION_QUERY_REQ = 0x16,
78 /* UTP UPIU Transaction Codes Target to Initiator */
80 UPIU_TRANSACTION_NOP_IN = 0x20,
81 UPIU_TRANSACTION_RESPONSE = 0x21,
82 UPIU_TRANSACTION_DATA_IN = 0x22,
83 UPIU_TRANSACTION_TASK_RSP = 0x24,
84 UPIU_TRANSACTION_READY_XFER = 0x31,
85 UPIU_TRANSACTION_QUERY_RSP = 0x36,
86 UPIU_TRANSACTION_REJECT_UPIU = 0x3F,
89 /* UPIU Read/Write flags */
91 UPIU_CMD_FLAGS_NONE = 0x00,
92 UPIU_CMD_FLAGS_WRITE = 0x20,
93 UPIU_CMD_FLAGS_READ = 0x40,
96 /* UPIU Task Attributes */
98 UPIU_TASK_ATTR_SIMPLE = 0x00,
99 UPIU_TASK_ATTR_ORDERED = 0x01,
100 UPIU_TASK_ATTR_HEADQ = 0x02,
101 UPIU_TASK_ATTR_ACA = 0x03,
104 /* UPIU Query request function */
106 UPIU_QUERY_FUNC_STANDARD_READ_REQUEST = 0x01,
107 UPIU_QUERY_FUNC_STANDARD_WRITE_REQUEST = 0x81,
110 /* Flag idn for Query Requests*/
112 QUERY_FLAG_IDN_FDEVICEINIT = 0x01,
113 QUERY_FLAG_IDN_BKOPS_EN = 0x04,
116 /* Attribute idn for Query requests */
118 QUERY_ATTR_IDN_ACTIVE_ICC_LVL = 0x03,
119 QUERY_ATTR_IDN_BKOPS_STATUS = 0x05,
120 QUERY_ATTR_IDN_EE_CONTROL = 0x0D,
121 QUERY_ATTR_IDN_EE_STATUS = 0x0E,
124 /* Descriptor idn for Query requests */
126 QUERY_DESC_IDN_DEVICE = 0x0,
127 QUERY_DESC_IDN_CONFIGURAION = 0x1,
128 QUERY_DESC_IDN_UNIT = 0x2,
129 QUERY_DESC_IDN_RFU_0 = 0x3,
130 QUERY_DESC_IDN_INTERCONNECT = 0x4,
131 QUERY_DESC_IDN_STRING = 0x5,
132 QUERY_DESC_IDN_RFU_1 = 0x6,
133 QUERY_DESC_IDN_GEOMETRY = 0x7,
134 QUERY_DESC_IDN_POWER = 0x8,
138 enum desc_header_offset {
139 QUERY_DESC_LENGTH_OFFSET = 0x00,
140 QUERY_DESC_DESC_TYPE_OFFSET = 0x01,
143 enum ufs_desc_max_size {
144 QUERY_DESC_DEVICE_MAX_SIZE = 0x1F,
145 QUERY_DESC_CONFIGURAION_MAX_SIZE = 0x90,
146 QUERY_DESC_UNIT_MAX_SIZE = 0x23,
147 QUERY_DESC_INTERCONNECT_MAX_SIZE = 0x06,
149 * Max. 126 UNICODE characters (2 bytes per character) plus 2 bytes
150 * of descriptor header.
152 QUERY_DESC_STRING_MAX_SIZE = 0xFE,
153 QUERY_DESC_GEOMETRY_MAZ_SIZE = 0x44,
154 QUERY_DESC_POWER_MAX_SIZE = 0x62,
155 QUERY_DESC_RFU_MAX_SIZE = 0x00,
158 /* Unit descriptor parameters offsets in bytes*/
159 enum unit_desc_param {
160 UNIT_DESC_PARAM_LEN = 0x0,
161 UNIT_DESC_PARAM_TYPE = 0x1,
162 UNIT_DESC_PARAM_UNIT_INDEX = 0x2,
163 UNIT_DESC_PARAM_LU_ENABLE = 0x3,
164 UNIT_DESC_PARAM_BOOT_LUN_ID = 0x4,
165 UNIT_DESC_PARAM_LU_WR_PROTECT = 0x5,
166 UNIT_DESC_PARAM_LU_Q_DEPTH = 0x6,
167 UNIT_DESC_PARAM_MEM_TYPE = 0x8,
168 UNIT_DESC_PARAM_DATA_RELIABILITY = 0x9,
169 UNIT_DESC_PARAM_LOGICAL_BLK_SIZE = 0xA,
170 UNIT_DESC_PARAM_LOGICAL_BLK_COUNT = 0xB,
171 UNIT_DESC_PARAM_ERASE_BLK_SIZE = 0x13,
172 UNIT_DESC_PARAM_PROVISIONING_TYPE = 0x17,
173 UNIT_DESC_PARAM_PHY_MEM_RSRC_CNT = 0x18,
174 UNIT_DESC_PARAM_CTX_CAPABILITIES = 0x20,
175 UNIT_DESC_PARAM_LARGE_UNIT_SIZE_M1 = 0x22,
178 /* bActiveICCLevel parameter current units */
181 UFSHCD_MICRO_AMP = 1,
186 #define POWER_DESC_MAX_SIZE 0x62
187 #define POWER_DESC_MAX_ACTV_ICC_LVLS 16
189 /* Attribute bActiveICCLevel parameter bit masks definitions */
190 #define ATTR_ICC_LVL_UNIT_OFFSET 14
191 #define ATTR_ICC_LVL_UNIT_MASK (0x3 << ATTR_ICC_LVL_UNIT_OFFSET)
192 #define ATTR_ICC_LVL_VALUE_MASK 0x3FF
194 /* Power descriptor parameters offsets in bytes */
195 enum power_desc_param_offset {
198 PWR_DESC_ACTIVE_LVLS_VCC_0 = 0x2,
199 PWR_DESC_ACTIVE_LVLS_VCCQ_0 = 0x22,
200 PWR_DESC_ACTIVE_LVLS_VCCQ2_0 = 0x42,
203 /* Exception event mask values */
205 MASK_EE_STATUS = 0xFFFF,
206 MASK_EE_URGENT_BKOPS = (1 << 2),
209 /* Background operation status */
211 BKOPS_STATUS_NO_OP = 0x0,
212 BKOPS_STATUS_NON_CRITICAL = 0x1,
213 BKOPS_STATUS_PERF_IMPACT = 0x2,
214 BKOPS_STATUS_CRITICAL = 0x3,
217 /* UTP QUERY Transaction Specific Fields OpCode */
219 UPIU_QUERY_OPCODE_NOP = 0x0,
220 UPIU_QUERY_OPCODE_READ_DESC = 0x1,
221 UPIU_QUERY_OPCODE_WRITE_DESC = 0x2,
222 UPIU_QUERY_OPCODE_READ_ATTR = 0x3,
223 UPIU_QUERY_OPCODE_WRITE_ATTR = 0x4,
224 UPIU_QUERY_OPCODE_READ_FLAG = 0x5,
225 UPIU_QUERY_OPCODE_SET_FLAG = 0x6,
226 UPIU_QUERY_OPCODE_CLEAR_FLAG = 0x7,
227 UPIU_QUERY_OPCODE_TOGGLE_FLAG = 0x8,
230 /* Query response result code */
232 QUERY_RESULT_SUCCESS = 0x00,
233 QUERY_RESULT_NOT_READABLE = 0xF6,
234 QUERY_RESULT_NOT_WRITEABLE = 0xF7,
235 QUERY_RESULT_ALREADY_WRITTEN = 0xF8,
236 QUERY_RESULT_INVALID_LENGTH = 0xF9,
237 QUERY_RESULT_INVALID_VALUE = 0xFA,
238 QUERY_RESULT_INVALID_SELECTOR = 0xFB,
239 QUERY_RESULT_INVALID_INDEX = 0xFC,
240 QUERY_RESULT_INVALID_IDN = 0xFD,
241 QUERY_RESULT_INVALID_OPCODE = 0xFE,
242 QUERY_RESULT_GENERAL_FAILURE = 0xFF,
245 /* UTP Transfer Request Command Type (CT) */
247 UPIU_COMMAND_SET_TYPE_SCSI = 0x0,
248 UPIU_COMMAND_SET_TYPE_UFS = 0x1,
249 UPIU_COMMAND_SET_TYPE_QUERY = 0x2,
252 /* UTP Transfer Request Command Offset */
253 #define UPIU_COMMAND_TYPE_OFFSET 28
255 /* Offset of the response code in the UPIU header */
256 #define UPIU_RSP_CODE_OFFSET 8
259 MASK_SCSI_STATUS = 0xFF,
260 MASK_TASK_RESPONSE = 0xFF00,
261 MASK_RSP_UPIU_RESULT = 0xFFFF,
262 MASK_QUERY_DATA_SEG_LEN = 0xFFFF,
263 MASK_RSP_UPIU_DATA_SEG_LEN = 0xFFFF,
264 MASK_RSP_EXCEPTION_EVENT = 0x10000,
267 /* Task management service response */
269 UPIU_TASK_MANAGEMENT_FUNC_COMPL = 0x00,
270 UPIU_TASK_MANAGEMENT_FUNC_NOT_SUPPORTED = 0x04,
271 UPIU_TASK_MANAGEMENT_FUNC_SUCCEEDED = 0x08,
272 UPIU_TASK_MANAGEMENT_FUNC_FAILED = 0x05,
273 UPIU_INCORRECT_LOGICAL_UNIT_NO = 0x09,
276 * struct utp_upiu_header - UPIU header structure
277 * @dword_0: UPIU header DW-0
278 * @dword_1: UPIU header DW-1
279 * @dword_2: UPIU header DW-2
281 struct utp_upiu_header {
288 * struct utp_upiu_cmd - Command UPIU structure
289 * @data_transfer_len: Data Transfer Length DW-3
290 * @cdb: Command Descriptor Block CDB DW-4 to DW-7
292 struct utp_upiu_cmd {
293 __be32 exp_data_transfer_len;
294 u8 cdb[MAX_CDB_SIZE];
298 * struct utp_upiu_query - upiu request buffer structure for
300 * @opcode: command to perform B-0
301 * @idn: a value that indicates the particular type of data B-1
302 * @index: Index to further identify data B-2
303 * @selector: Index to further identify data B-3
304 * @reserved_osf: spec reserved field B-4,5
305 * @length: number of descriptor bytes to read/write B-6,7
306 * @value: Attribute value to be written DW-5
307 * @reserved: spec reserved DW-6,7
309 struct utp_upiu_query {
321 * struct utp_upiu_req - general upiu request structure
322 * @header:UPIU header structure DW-0 to DW-2
323 * @sc: fields structure for scsi command DW-3 to DW-7
324 * @qr: fields structure for query request DW-3 to DW-7
326 struct utp_upiu_req {
327 struct utp_upiu_header header;
329 struct utp_upiu_cmd sc;
330 struct utp_upiu_query qr;
335 * struct utp_cmd_rsp - Response UPIU structure
336 * @residual_transfer_count: Residual transfer count DW-3
337 * @reserved: Reserved double words DW-4 to DW-7
338 * @sense_data_len: Sense data length DW-8 U16
339 * @sense_data: Sense data field DW-8 to DW-12
342 __be32 residual_transfer_count;
344 __be16 sense_data_len;
349 * struct utp_upiu_rsp - general upiu response structure
350 * @header: UPIU header structure DW-0 to DW-2
351 * @sr: fields structure for scsi command DW-3 to DW-12
352 * @qr: fields structure for query request DW-3 to DW-7
354 struct utp_upiu_rsp {
355 struct utp_upiu_header header;
357 struct utp_cmd_rsp sr;
358 struct utp_upiu_query qr;
363 * struct utp_upiu_task_req - Task request UPIU structure
364 * @header - UPIU header structure DW0 to DW-2
365 * @input_param1: Input parameter 1 DW-3
366 * @input_param2: Input parameter 2 DW-4
367 * @input_param3: Input parameter 3 DW-5
368 * @reserved: Reserved double words DW-6 to DW-7
370 struct utp_upiu_task_req {
371 struct utp_upiu_header header;
379 * struct utp_upiu_task_rsp - Task Management Response UPIU structure
380 * @header: UPIU header structure DW0-DW-2
381 * @output_param1: Ouput parameter 1 DW3
382 * @output_param2: Output parameter 2 DW4
383 * @reserved: Reserved double words DW-5 to DW-7
385 struct utp_upiu_task_rsp {
386 struct utp_upiu_header header;
387 __be32 output_param1;
388 __be32 output_param2;
393 * struct ufs_query_req - parameters for building a query request
394 * @query_func: UPIU header query function
395 * @upiu_req: the query request data
397 struct ufs_query_req {
399 struct utp_upiu_query upiu_req;
403 * struct ufs_query_resp - UPIU QUERY
404 * @response: device response code
405 * @upiu_res: query response data
407 struct ufs_query_res {
409 struct utp_upiu_query upiu_res;
412 #define UFS_VREG_VCC_MIN_UV 2700000 /* uV */
413 #define UFS_VREG_VCC_MAX_UV 3600000 /* uV */
414 #define UFS_VREG_VCC_1P8_MIN_UV 1700000 /* uV */
415 #define UFS_VREG_VCC_1P8_MAX_UV 1950000 /* uV */
416 #define UFS_VREG_VCCQ_MIN_UV 1100000 /* uV */
417 #define UFS_VREG_VCCQ_MAX_UV 1300000 /* uV */
418 #define UFS_VREG_VCCQ2_MIN_UV 1650000 /* uV */
419 #define UFS_VREG_VCCQ2_MAX_UV 1950000 /* uV */
422 struct regulator *reg;
431 struct ufs_vreg_info {
432 struct ufs_vreg *vcc;
433 struct ufs_vreg *vccq;
434 struct ufs_vreg *vccq2;
435 struct ufs_vreg *vdd_hba;
438 #endif /* End of Header */