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>
41 #include <scsi/ufs/ufs.h>
43 #define MAX_CDB_SIZE 16
44 #define GENERAL_UPIU_REQUEST_SIZE 32
45 #define QUERY_DESC_MAX_SIZE 255
46 #define QUERY_DESC_MIN_SIZE 2
47 #define QUERY_OSF_SIZE (GENERAL_UPIU_REQUEST_SIZE - \
48 (sizeof(struct utp_upiu_header)))
50 #define UPIU_HEADER_DWORD(byte3, byte2, byte1, byte0)\
51 cpu_to_be32((byte3 << 24) | (byte2 << 16) |\
52 (byte1 << 8) | (byte0))
54 * UFS device may have standard LUs and LUN id could be from 0x00 to
55 * 0x7F. Standard LUs use "Peripheral Device Addressing Format".
56 * UFS device may also have the Well Known LUs (also referred as W-LU)
57 * which again could be from 0x00 to 0x7F. For W-LUs, device only use
58 * the "Extended Addressing Format" which means the W-LUNs would be
59 * from 0xc100 (SCSI_W_LUN_BASE) onwards.
60 * This means max. LUN number reported from UFS device could be 0xC17F.
62 #define UFS_UPIU_MAX_UNIT_NUM_ID 0x7F
63 #define UFS_MAX_LUNS (SCSI_W_LUN_BASE + UFS_UPIU_MAX_UNIT_NUM_ID)
64 #define UFS_UPIU_WLUN_ID (1 << 7)
65 #define UFS_UPIU_MAX_GENERAL_LUN 8
67 /* Well known logical unit id in LUN field of UPIU */
69 UFS_UPIU_REPORT_LUNS_WLUN = 0x81,
70 UFS_UPIU_UFS_DEVICE_WLUN = 0xD0,
71 UFS_UPIU_BOOT_WLUN = 0xB0,
72 UFS_UPIU_RPMB_WLUN = 0xC4,
76 * ufs_is_valid_unit_desc_lun - checks if the given LUN has a unit descriptor
77 * @lun: LU number to check
78 * @return: true if the lun has a matching unit descriptor, false otherwise
80 static inline bool ufs_is_valid_unit_desc_lun(u8 lun)
82 return (lun == UFS_UPIU_RPMB_WLUN || (lun < UFS_UPIU_MAX_GENERAL_LUN));
86 * UFS Protocol Information Unit related definitions
89 /* Task management functions */
91 UFS_ABORT_TASK = 0x01,
92 UFS_ABORT_TASK_SET = 0x02,
93 UFS_CLEAR_TASK_SET = 0x04,
94 UFS_LOGICAL_RESET = 0x08,
95 UFS_QUERY_TASK = 0x80,
96 UFS_QUERY_TASK_SET = 0x81,
99 /* UTP UPIU Transaction Codes Initiator to Target */
101 UPIU_TRANSACTION_NOP_OUT = 0x00,
102 UPIU_TRANSACTION_COMMAND = 0x01,
103 UPIU_TRANSACTION_DATA_OUT = 0x02,
104 UPIU_TRANSACTION_TASK_REQ = 0x04,
105 UPIU_TRANSACTION_QUERY_REQ = 0x16,
108 /* UTP UPIU Transaction Codes Target to Initiator */
110 UPIU_TRANSACTION_NOP_IN = 0x20,
111 UPIU_TRANSACTION_RESPONSE = 0x21,
112 UPIU_TRANSACTION_DATA_IN = 0x22,
113 UPIU_TRANSACTION_TASK_RSP = 0x24,
114 UPIU_TRANSACTION_READY_XFER = 0x31,
115 UPIU_TRANSACTION_QUERY_RSP = 0x36,
116 UPIU_TRANSACTION_REJECT_UPIU = 0x3F,
119 /* UPIU Read/Write flags */
121 UPIU_CMD_FLAGS_NONE = 0x00,
122 UPIU_CMD_FLAGS_WRITE = 0x20,
123 UPIU_CMD_FLAGS_READ = 0x40,
126 /* UPIU Task Attributes */
128 UPIU_TASK_ATTR_SIMPLE = 0x00,
129 UPIU_TASK_ATTR_ORDERED = 0x01,
130 UPIU_TASK_ATTR_HEADQ = 0x02,
131 UPIU_TASK_ATTR_ACA = 0x03,
134 /* UPIU Query request function */
136 UPIU_QUERY_FUNC_STANDARD_READ_REQUEST = 0x01,
137 UPIU_QUERY_FUNC_STANDARD_WRITE_REQUEST = 0x81,
140 enum desc_header_offset {
141 QUERY_DESC_LENGTH_OFFSET = 0x00,
142 QUERY_DESC_DESC_TYPE_OFFSET = 0x01,
145 enum ufs_desc_max_size {
146 QUERY_DESC_DEVICE_MAX_SIZE = 0x1F,
147 QUERY_DESC_CONFIGURAION_MAX_SIZE = 0x90,
148 QUERY_DESC_UNIT_MAX_SIZE = 0x23,
149 QUERY_DESC_INTERCONNECT_MAX_SIZE = 0x06,
151 * Max. 126 UNICODE characters (2 bytes per character) plus 2 bytes
152 * of descriptor header.
154 QUERY_DESC_STRING_MAX_SIZE = 0xFE,
155 QUERY_DESC_GEOMETRY_MAZ_SIZE = 0x44,
156 QUERY_DESC_POWER_MAX_SIZE = 0x62,
157 QUERY_DESC_RFU_MAX_SIZE = 0x00,
160 /* Unit descriptor parameters offsets in bytes*/
161 enum unit_desc_param {
162 UNIT_DESC_PARAM_LEN = 0x0,
163 UNIT_DESC_PARAM_TYPE = 0x1,
164 UNIT_DESC_PARAM_UNIT_INDEX = 0x2,
165 UNIT_DESC_PARAM_LU_ENABLE = 0x3,
166 UNIT_DESC_PARAM_BOOT_LUN_ID = 0x4,
167 UNIT_DESC_PARAM_LU_WR_PROTECT = 0x5,
168 UNIT_DESC_PARAM_LU_Q_DEPTH = 0x6,
169 UNIT_DESC_PARAM_MEM_TYPE = 0x8,
170 UNIT_DESC_PARAM_DATA_RELIABILITY = 0x9,
171 UNIT_DESC_PARAM_LOGICAL_BLK_SIZE = 0xA,
172 UNIT_DESC_PARAM_LOGICAL_BLK_COUNT = 0xB,
173 UNIT_DESC_PARAM_ERASE_BLK_SIZE = 0x13,
174 UNIT_DESC_PARAM_PROVISIONING_TYPE = 0x17,
175 UNIT_DESC_PARAM_PHY_MEM_RSRC_CNT = 0x18,
176 UNIT_DESC_PARAM_CTX_CAPABILITIES = 0x20,
177 UNIT_DESC_PARAM_LARGE_UNIT_SIZE_M1 = 0x22,
181 * Logical Unit Write Protect
182 * 00h: LU not write protected
183 * 01h: LU write protected when fPowerOnWPEn =1
184 * 02h: LU permanently write protected when fPermanentWPEn =1
186 enum ufs_lu_wp_type {
188 UFS_LU_POWER_ON_WP = 0x01,
189 UFS_LU_PERM_WP = 0x02,
192 /* bActiveICCLevel parameter current units */
195 UFSHCD_MICRO_AMP = 1,
200 #define POWER_DESC_MAX_SIZE 0x62
201 #define POWER_DESC_MAX_ACTV_ICC_LVLS 16
203 /* Attribute bActiveICCLevel parameter bit masks definitions */
204 #define ATTR_ICC_LVL_UNIT_OFFSET 14
205 #define ATTR_ICC_LVL_UNIT_MASK (0x3 << ATTR_ICC_LVL_UNIT_OFFSET)
206 #define ATTR_ICC_LVL_VALUE_MASK 0x3FF
208 /* Power descriptor parameters offsets in bytes */
209 enum power_desc_param_offset {
212 PWR_DESC_ACTIVE_LVLS_VCC_0 = 0x2,
213 PWR_DESC_ACTIVE_LVLS_VCCQ_0 = 0x22,
214 PWR_DESC_ACTIVE_LVLS_VCCQ2_0 = 0x42,
217 /* Exception event mask values */
219 MASK_EE_STATUS = 0xFFFF,
220 MASK_EE_URGENT_BKOPS = (1 << 2),
223 /* Background operation status */
225 BKOPS_STATUS_NO_OP = 0x0,
226 BKOPS_STATUS_NON_CRITICAL = 0x1,
227 BKOPS_STATUS_PERF_IMPACT = 0x2,
228 BKOPS_STATUS_CRITICAL = 0x3,
229 BKOPS_STATUS_MAX = BKOPS_STATUS_CRITICAL,
232 /* Query response result code */
234 QUERY_RESULT_SUCCESS = 0x00,
235 QUERY_RESULT_NOT_READABLE = 0xF6,
236 QUERY_RESULT_NOT_WRITEABLE = 0xF7,
237 QUERY_RESULT_ALREADY_WRITTEN = 0xF8,
238 QUERY_RESULT_INVALID_LENGTH = 0xF9,
239 QUERY_RESULT_INVALID_VALUE = 0xFA,
240 QUERY_RESULT_INVALID_SELECTOR = 0xFB,
241 QUERY_RESULT_INVALID_INDEX = 0xFC,
242 QUERY_RESULT_INVALID_IDN = 0xFD,
243 QUERY_RESULT_INVALID_OPCODE = 0xFE,
244 QUERY_RESULT_GENERAL_FAILURE = 0xFF,
247 /* UTP Transfer Request Command Type (CT) */
249 UPIU_COMMAND_SET_TYPE_SCSI = 0x0,
250 UPIU_COMMAND_SET_TYPE_UFS = 0x1,
251 UPIU_COMMAND_SET_TYPE_QUERY = 0x2,
254 /* UTP Transfer Request Command Offset */
255 #define UPIU_COMMAND_TYPE_OFFSET 28
257 /* Offset of the response code in the UPIU header */
258 #define UPIU_RSP_CODE_OFFSET 8
261 MASK_SCSI_STATUS = 0xFF,
262 MASK_TASK_RESPONSE = 0xFF00,
263 MASK_RSP_UPIU_RESULT = 0xFFFF,
264 MASK_QUERY_DATA_SEG_LEN = 0xFFFF,
265 MASK_RSP_UPIU_DATA_SEG_LEN = 0xFFFF,
266 MASK_RSP_EXCEPTION_EVENT = 0x10000,
269 /* Task management service response */
271 UPIU_TASK_MANAGEMENT_FUNC_COMPL = 0x00,
272 UPIU_TASK_MANAGEMENT_FUNC_NOT_SUPPORTED = 0x04,
273 UPIU_TASK_MANAGEMENT_FUNC_SUCCEEDED = 0x08,
274 UPIU_TASK_MANAGEMENT_FUNC_FAILED = 0x05,
275 UPIU_INCORRECT_LOGICAL_UNIT_NO = 0x09,
278 /* UFS device power modes */
279 enum ufs_dev_pwr_mode {
280 UFS_ACTIVE_PWR_MODE = 1,
281 UFS_SLEEP_PWR_MODE = 2,
282 UFS_POWERDOWN_PWR_MODE = 3,
286 * struct utp_upiu_header - UPIU header structure
287 * @dword_0: UPIU header DW-0
288 * @dword_1: UPIU header DW-1
289 * @dword_2: UPIU header DW-2
291 struct utp_upiu_header {
298 * struct utp_upiu_cmd - Command UPIU structure
299 * @data_transfer_len: Data Transfer Length DW-3
300 * @cdb: Command Descriptor Block CDB DW-4 to DW-7
302 struct utp_upiu_cmd {
303 __be32 exp_data_transfer_len;
304 u8 cdb[MAX_CDB_SIZE];
308 * struct utp_upiu_query - upiu request buffer structure for
310 * @opcode: command to perform B-0
311 * @idn: a value that indicates the particular type of data B-1
312 * @index: Index to further identify data B-2
313 * @selector: Index to further identify data B-3
314 * @reserved_osf: spec reserved field B-4,5
315 * @length: number of descriptor bytes to read/write B-6,7
316 * @value: Attribute value to be written DW-5
317 * @reserved: spec reserved DW-6,7
319 struct utp_upiu_query {
331 * struct utp_upiu_req - general upiu request structure
332 * @header:UPIU header structure DW-0 to DW-2
333 * @sc: fields structure for scsi command DW-3 to DW-7
334 * @qr: fields structure for query request DW-3 to DW-7
336 struct utp_upiu_req {
337 struct utp_upiu_header header;
339 struct utp_upiu_cmd sc;
340 struct utp_upiu_query qr;
345 * struct utp_cmd_rsp - Response UPIU structure
346 * @residual_transfer_count: Residual transfer count DW-3
347 * @reserved: Reserved double words DW-4 to DW-7
348 * @sense_data_len: Sense data length DW-8 U16
349 * @sense_data: Sense data field DW-8 to DW-12
352 __be32 residual_transfer_count;
354 __be16 sense_data_len;
359 * struct utp_upiu_rsp - general upiu response structure
360 * @header: UPIU header structure DW-0 to DW-2
361 * @sr: fields structure for scsi command DW-3 to DW-12
362 * @qr: fields structure for query request DW-3 to DW-7
364 struct utp_upiu_rsp {
365 struct utp_upiu_header header;
367 struct utp_cmd_rsp sr;
368 struct utp_upiu_query qr;
373 * struct utp_upiu_task_req - Task request UPIU structure
374 * @header - UPIU header structure DW0 to DW-2
375 * @input_param1: Input parameter 1 DW-3
376 * @input_param2: Input parameter 2 DW-4
377 * @input_param3: Input parameter 3 DW-5
378 * @reserved: Reserved double words DW-6 to DW-7
380 struct utp_upiu_task_req {
381 struct utp_upiu_header header;
389 * struct utp_upiu_task_rsp - Task Management Response UPIU structure
390 * @header: UPIU header structure DW0-DW-2
391 * @output_param1: Ouput parameter 1 DW3
392 * @output_param2: Output parameter 2 DW4
393 * @reserved: Reserved double words DW-5 to DW-7
395 struct utp_upiu_task_rsp {
396 struct utp_upiu_header header;
397 __be32 output_param1;
398 __be32 output_param2;
403 * struct ufs_query_req - parameters for building a query request
404 * @query_func: UPIU header query function
405 * @upiu_req: the query request data
407 struct ufs_query_req {
409 struct utp_upiu_query upiu_req;
413 * struct ufs_query_resp - UPIU QUERY
414 * @response: device response code
415 * @upiu_res: query response data
417 struct ufs_query_res {
419 struct utp_upiu_query upiu_res;
422 #define UFS_VREG_VCC_MIN_UV 2700000 /* uV */
423 #define UFS_VREG_VCC_MAX_UV 3600000 /* uV */
424 #define UFS_VREG_VCC_1P8_MIN_UV 1700000 /* uV */
425 #define UFS_VREG_VCC_1P8_MAX_UV 1950000 /* uV */
426 #define UFS_VREG_VCCQ_MIN_UV 1100000 /* uV */
427 #define UFS_VREG_VCCQ_MAX_UV 1300000 /* uV */
428 #define UFS_VREG_VCCQ2_MIN_UV 1650000 /* uV */
429 #define UFS_VREG_VCCQ2_MAX_UV 1950000 /* uV */
432 * VCCQ & VCCQ2 current requirement when UFS device is in sleep state
433 * and link is in Hibern8 state.
435 #define UFS_VREG_LPM_LOAD_UA 1000 /* uA */
438 struct regulator *reg;
447 struct ufs_vreg_info {
448 struct ufs_vreg *vcc;
449 struct ufs_vreg *vccq;
450 struct ufs_vreg *vccq2;
451 struct ufs_vreg *vdd_hba;
454 struct ufs_dev_info {
455 bool f_power_on_wp_en;
456 /* Keeps information if any of the LU is power on write protected */
457 bool is_lu_power_on_wp;
460 #endif /* End of Header */