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1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3  * Universal Flash Storage Host controller driver
4  * Copyright (C) 2011-2013 Samsung India Software Operations
5  *
6  * Authors:
7  *	Santosh Yaraganavi <santosh.sy@samsung.com>
8  *	Vinayak Holikatti <h.vinayak@samsung.com>
9  */
10 
11 #ifndef _UFSHCI_H
12 #define _UFSHCI_H
13 
14 enum {
15 	TASK_REQ_UPIU_SIZE_DWORDS	= 8,
16 	TASK_RSP_UPIU_SIZE_DWORDS	= 8,
17 	ALIGNED_UPIU_SIZE		= 512,
18 };
19 
20 /* UFSHCI Registers */
21 enum {
22 	REG_CONTROLLER_CAPABILITIES		= 0x00,
23 	REG_UFS_VERSION				= 0x08,
24 	REG_CONTROLLER_DEV_ID			= 0x10,
25 	REG_CONTROLLER_PROD_ID			= 0x14,
26 	REG_AUTO_HIBERNATE_IDLE_TIMER		= 0x18,
27 	REG_INTERRUPT_STATUS			= 0x20,
28 	REG_INTERRUPT_ENABLE			= 0x24,
29 	REG_CONTROLLER_STATUS			= 0x30,
30 	REG_CONTROLLER_ENABLE			= 0x34,
31 	REG_UIC_ERROR_CODE_PHY_ADAPTER_LAYER	= 0x38,
32 	REG_UIC_ERROR_CODE_DATA_LINK_LAYER	= 0x3C,
33 	REG_UIC_ERROR_CODE_NETWORK_LAYER	= 0x40,
34 	REG_UIC_ERROR_CODE_TRANSPORT_LAYER	= 0x44,
35 	REG_UIC_ERROR_CODE_DME			= 0x48,
36 	REG_UTP_TRANSFER_REQ_INT_AGG_CONTROL	= 0x4C,
37 	REG_UTP_TRANSFER_REQ_LIST_BASE_L	= 0x50,
38 	REG_UTP_TRANSFER_REQ_LIST_BASE_H	= 0x54,
39 	REG_UTP_TRANSFER_REQ_DOOR_BELL		= 0x58,
40 	REG_UTP_TRANSFER_REQ_LIST_CLEAR		= 0x5C,
41 	REG_UTP_TRANSFER_REQ_LIST_RUN_STOP	= 0x60,
42 	REG_UTP_TASK_REQ_LIST_BASE_L		= 0x70,
43 	REG_UTP_TASK_REQ_LIST_BASE_H		= 0x74,
44 	REG_UTP_TASK_REQ_DOOR_BELL		= 0x78,
45 	REG_UTP_TASK_REQ_LIST_CLEAR		= 0x7C,
46 	REG_UTP_TASK_REQ_LIST_RUN_STOP		= 0x80,
47 	REG_UIC_COMMAND				= 0x90,
48 	REG_UIC_COMMAND_ARG_1			= 0x94,
49 	REG_UIC_COMMAND_ARG_2			= 0x98,
50 	REG_UIC_COMMAND_ARG_3			= 0x9C,
51 
52 	UFSHCI_REG_SPACE_SIZE			= 0xA0,
53 
54 	REG_UFS_CCAP				= 0x100,
55 	REG_UFS_CRYPTOCAP			= 0x104,
56 
57 	UFSHCI_CRYPTO_REG_SPACE_SIZE		= 0x400,
58 };
59 
60 /* Controller capability masks */
61 enum {
62 	MASK_TRANSFER_REQUESTS_SLOTS		= 0x0000001F,
63 	MASK_TASK_MANAGEMENT_REQUEST_SLOTS	= 0x00070000,
64 	MASK_AUTO_HIBERN8_SUPPORT		= 0x00800000,
65 	MASK_64_ADDRESSING_SUPPORT		= 0x01000000,
66 	MASK_OUT_OF_ORDER_DATA_DELIVERY_SUPPORT	= 0x02000000,
67 	MASK_UIC_DME_TEST_MODE_SUPPORT		= 0x04000000,
68 	MASK_CRYPTO_SUPPORT			= 0x10000000,
69 };
70 
71 #define UFS_MASK(mask, offset)		((mask) << (offset))
72 
73 /* UFS Version 08h */
74 #define MINOR_VERSION_NUM_MASK		UFS_MASK(0xFFFF, 0)
75 #define MAJOR_VERSION_NUM_MASK		UFS_MASK(0xFFFF, 16)
76 
77 /*
78  * Controller UFSHCI version
79  * - 2.x and newer use the following scheme:
80  *   major << 8 + minor << 4
81  * - 1.x has been converted to match this in
82  *   ufshcd_get_ufs_version()
83  */
ufshci_version(u32 major,u32 minor)84 static inline u32 ufshci_version(u32 major, u32 minor)
85 {
86 	return (major << 8) + (minor << 4);
87 }
88 
89 /*
90  * HCDDID - Host Controller Identification Descriptor
91  *	  - Device ID and Device Class 10h
92  */
93 #define DEVICE_CLASS	UFS_MASK(0xFFFF, 0)
94 #define DEVICE_ID	UFS_MASK(0xFF, 24)
95 
96 /*
97  * HCPMID - Host Controller Identification Descriptor
98  *	  - Product/Manufacturer ID  14h
99  */
100 #define MANUFACTURE_ID_MASK	UFS_MASK(0xFFFF, 0)
101 #define PRODUCT_ID_MASK		UFS_MASK(0xFFFF, 16)
102 
103 /* AHIT - Auto-Hibernate Idle Timer */
104 #define UFSHCI_AHIBERN8_TIMER_MASK		GENMASK(9, 0)
105 #define UFSHCI_AHIBERN8_SCALE_MASK		GENMASK(12, 10)
106 #define UFSHCI_AHIBERN8_SCALE_FACTOR		10
107 #define UFSHCI_AHIBERN8_MAX			(1023 * 100000)
108 
109 /*
110  * IS - Interrupt Status - 20h
111  */
112 #define UTP_TRANSFER_REQ_COMPL			0x1
113 #define UIC_DME_END_PT_RESET			0x2
114 #define UIC_ERROR				0x4
115 #define UIC_TEST_MODE				0x8
116 #define UIC_POWER_MODE				0x10
117 #define UIC_HIBERNATE_EXIT			0x20
118 #define UIC_HIBERNATE_ENTER			0x40
119 #define UIC_LINK_LOST				0x80
120 #define UIC_LINK_STARTUP			0x100
121 #define UTP_TASK_REQ_COMPL			0x200
122 #define UIC_COMMAND_COMPL			0x400
123 #define DEVICE_FATAL_ERROR			0x800
124 #define CONTROLLER_FATAL_ERROR			0x10000
125 #define SYSTEM_BUS_FATAL_ERROR			0x20000
126 #define CRYPTO_ENGINE_FATAL_ERROR		0x40000
127 
128 #define UFSHCD_UIC_HIBERN8_MASK	(UIC_HIBERNATE_ENTER |\
129 				UIC_HIBERNATE_EXIT)
130 
131 #define UFSHCD_UIC_PWR_MASK	(UFSHCD_UIC_HIBERN8_MASK |\
132 				UIC_POWER_MODE)
133 
134 #define UFSHCD_UIC_MASK		(UIC_COMMAND_COMPL | UFSHCD_UIC_PWR_MASK)
135 
136 #define UFSHCD_ERROR_MASK	(UIC_ERROR | INT_FATAL_ERRORS)
137 
138 #define INT_FATAL_ERRORS	(DEVICE_FATAL_ERROR |\
139 				CONTROLLER_FATAL_ERROR |\
140 				SYSTEM_BUS_FATAL_ERROR |\
141 				CRYPTO_ENGINE_FATAL_ERROR |\
142 				UIC_LINK_LOST)
143 
144 /* HCS - Host Controller Status 30h */
145 #define DEVICE_PRESENT				0x1
146 #define UTP_TRANSFER_REQ_LIST_READY		0x2
147 #define UTP_TASK_REQ_LIST_READY			0x4
148 #define UIC_COMMAND_READY			0x8
149 #define HOST_ERROR_INDICATOR			0x10
150 #define DEVICE_ERROR_INDICATOR			0x20
151 #define UIC_POWER_MODE_CHANGE_REQ_STATUS_MASK	UFS_MASK(0x7, 8)
152 
153 #define UFSHCD_STATUS_READY	(UTP_TRANSFER_REQ_LIST_READY |\
154 				UTP_TASK_REQ_LIST_READY |\
155 				UIC_COMMAND_READY)
156 
157 enum {
158 	PWR_OK		= 0x0,
159 	PWR_LOCAL	= 0x01,
160 	PWR_REMOTE	= 0x02,
161 	PWR_BUSY	= 0x03,
162 	PWR_ERROR_CAP	= 0x04,
163 	PWR_FATAL_ERROR	= 0x05,
164 };
165 
166 /* HCE - Host Controller Enable 34h */
167 #define CONTROLLER_ENABLE	0x1
168 #define CONTROLLER_DISABLE	0x0
169 #define CRYPTO_GENERAL_ENABLE	0x2
170 
171 /* UECPA - Host UIC Error Code PHY Adapter Layer 38h */
172 #define UIC_PHY_ADAPTER_LAYER_ERROR			0x80000000
173 #define UIC_PHY_ADAPTER_LAYER_ERROR_CODE_MASK		0x1F
174 #define UIC_PHY_ADAPTER_LAYER_LANE_ERR_MASK		0xF
175 #define UIC_PHY_ADAPTER_LAYER_GENERIC_ERROR		0x10
176 
177 /* UECDL - Host UIC Error Code Data Link Layer 3Ch */
178 #define UIC_DATA_LINK_LAYER_ERROR		0x80000000
179 #define UIC_DATA_LINK_LAYER_ERROR_CODE_MASK	0xFFFF
180 #define UIC_DATA_LINK_LAYER_ERROR_TCX_REP_TIMER_EXP	0x2
181 #define UIC_DATA_LINK_LAYER_ERROR_AFCX_REQ_TIMER_EXP	0x4
182 #define UIC_DATA_LINK_LAYER_ERROR_FCX_PRO_TIMER_EXP	0x8
183 #define UIC_DATA_LINK_LAYER_ERROR_RX_BUF_OF	0x20
184 #define UIC_DATA_LINK_LAYER_ERROR_PA_INIT	0x2000
185 #define UIC_DATA_LINK_LAYER_ERROR_NAC_RECEIVED	0x0001
186 #define UIC_DATA_LINK_LAYER_ERROR_TCx_REPLAY_TIMEOUT 0x0002
187 
188 /* UECN - Host UIC Error Code Network Layer 40h */
189 #define UIC_NETWORK_LAYER_ERROR			0x80000000
190 #define UIC_NETWORK_LAYER_ERROR_CODE_MASK	0x7
191 #define UIC_NETWORK_UNSUPPORTED_HEADER_TYPE	0x1
192 #define UIC_NETWORK_BAD_DEVICEID_ENC		0x2
193 #define UIC_NETWORK_LHDR_TRAP_PACKET_DROPPING	0x4
194 
195 /* UECT - Host UIC Error Code Transport Layer 44h */
196 #define UIC_TRANSPORT_LAYER_ERROR		0x80000000
197 #define UIC_TRANSPORT_LAYER_ERROR_CODE_MASK	0x7F
198 #define UIC_TRANSPORT_UNSUPPORTED_HEADER_TYPE	0x1
199 #define UIC_TRANSPORT_UNKNOWN_CPORTID		0x2
200 #define UIC_TRANSPORT_NO_CONNECTION_RX		0x4
201 #define UIC_TRANSPORT_CONTROLLED_SEGMENT_DROPPING	0x8
202 #define UIC_TRANSPORT_BAD_TC			0x10
203 #define UIC_TRANSPORT_E2E_CREDIT_OVERFOW	0x20
204 #define UIC_TRANSPORT_SAFETY_VALUE_DROPPING	0x40
205 
206 /* UECDME - Host UIC Error Code DME 48h */
207 #define UIC_DME_ERROR			0x80000000
208 #define UIC_DME_ERROR_CODE_MASK		0x1
209 
210 /* UTRIACR - Interrupt Aggregation control register - 0x4Ch */
211 #define INT_AGGR_TIMEOUT_VAL_MASK		0xFF
212 #define INT_AGGR_COUNTER_THRESHOLD_MASK		UFS_MASK(0x1F, 8)
213 #define INT_AGGR_COUNTER_AND_TIMER_RESET	0x10000
214 #define INT_AGGR_STATUS_BIT			0x100000
215 #define INT_AGGR_PARAM_WRITE			0x1000000
216 #define INT_AGGR_ENABLE				0x80000000
217 
218 /* UTRLRSR - UTP Transfer Request Run-Stop Register 60h */
219 #define UTP_TRANSFER_REQ_LIST_RUN_STOP_BIT	0x1
220 
221 /* UTMRLRSR - UTP Task Management Request Run-Stop Register 80h */
222 #define UTP_TASK_REQ_LIST_RUN_STOP_BIT		0x1
223 
224 /* UICCMD - UIC Command */
225 #define COMMAND_OPCODE_MASK		0xFF
226 #define GEN_SELECTOR_INDEX_MASK		0xFFFF
227 
228 #define MIB_ATTRIBUTE_MASK		UFS_MASK(0xFFFF, 16)
229 #define RESET_LEVEL			0xFF
230 
231 #define ATTR_SET_TYPE_MASK		UFS_MASK(0xFF, 16)
232 #define CONFIG_RESULT_CODE_MASK		0xFF
233 #define GENERIC_ERROR_CODE_MASK		0xFF
234 
235 /* GenSelectorIndex calculation macros for M-PHY attributes */
236 #define UIC_ARG_MPHY_TX_GEN_SEL_INDEX(lane) (lane)
237 #define UIC_ARG_MPHY_RX_GEN_SEL_INDEX(lane) (PA_MAXDATALANES + (lane))
238 
239 #define UIC_ARG_MIB_SEL(attr, sel)	((((attr) & 0xFFFF) << 16) |\
240 					 ((sel) & 0xFFFF))
241 #define UIC_ARG_MIB(attr)		UIC_ARG_MIB_SEL(attr, 0)
242 #define UIC_ARG_ATTR_TYPE(t)		(((t) & 0xFF) << 16)
243 #define UIC_GET_ATTR_ID(v)		(((v) >> 16) & 0xFFFF)
244 
245 /* Link Status*/
246 enum link_status {
247 	UFSHCD_LINK_IS_DOWN	= 1,
248 	UFSHCD_LINK_IS_UP	= 2,
249 };
250 
251 /* UIC Commands */
252 enum uic_cmd_dme {
253 	UIC_CMD_DME_GET			= 0x01,
254 	UIC_CMD_DME_SET			= 0x02,
255 	UIC_CMD_DME_PEER_GET		= 0x03,
256 	UIC_CMD_DME_PEER_SET		= 0x04,
257 	UIC_CMD_DME_POWERON		= 0x10,
258 	UIC_CMD_DME_POWEROFF		= 0x11,
259 	UIC_CMD_DME_ENABLE		= 0x12,
260 	UIC_CMD_DME_RESET		= 0x14,
261 	UIC_CMD_DME_END_PT_RST		= 0x15,
262 	UIC_CMD_DME_LINK_STARTUP	= 0x16,
263 	UIC_CMD_DME_HIBER_ENTER		= 0x17,
264 	UIC_CMD_DME_HIBER_EXIT		= 0x18,
265 	UIC_CMD_DME_TEST_MODE		= 0x1A,
266 };
267 
268 /* UIC Config result code / Generic error code */
269 enum {
270 	UIC_CMD_RESULT_SUCCESS			= 0x00,
271 	UIC_CMD_RESULT_INVALID_ATTR		= 0x01,
272 	UIC_CMD_RESULT_FAILURE			= 0x01,
273 	UIC_CMD_RESULT_INVALID_ATTR_VALUE	= 0x02,
274 	UIC_CMD_RESULT_READ_ONLY_ATTR		= 0x03,
275 	UIC_CMD_RESULT_WRITE_ONLY_ATTR		= 0x04,
276 	UIC_CMD_RESULT_BAD_INDEX		= 0x05,
277 	UIC_CMD_RESULT_LOCKED_ATTR		= 0x06,
278 	UIC_CMD_RESULT_BAD_TEST_FEATURE_INDEX	= 0x07,
279 	UIC_CMD_RESULT_PEER_COMM_FAILURE	= 0x08,
280 	UIC_CMD_RESULT_BUSY			= 0x09,
281 	UIC_CMD_RESULT_DME_FAILURE		= 0x0A,
282 };
283 
284 #define MASK_UIC_COMMAND_RESULT			0xFF
285 
286 #define INT_AGGR_COUNTER_THLD_VAL(c)	(((c) & 0x1F) << 8)
287 #define INT_AGGR_TIMEOUT_VAL(t)		(((t) & 0xFF) << 0)
288 
289 /* Interrupt disable masks */
290 enum {
291 	/* Interrupt disable mask for UFSHCI v1.0 */
292 	INTERRUPT_MASK_ALL_VER_10	= 0x30FFF,
293 	INTERRUPT_MASK_RW_VER_10	= 0x30000,
294 
295 	/* Interrupt disable mask for UFSHCI v1.1 */
296 	INTERRUPT_MASK_ALL_VER_11	= 0x31FFF,
297 
298 	/* Interrupt disable mask for UFSHCI v2.1 */
299 	INTERRUPT_MASK_ALL_VER_21	= 0x71FFF,
300 };
301 
302 /* CCAP - Crypto Capability 100h */
303 union ufs_crypto_capabilities {
304 	__le32 reg_val;
305 	struct {
306 		u8 num_crypto_cap;
307 		u8 config_count;
308 		u8 reserved;
309 		u8 config_array_ptr;
310 	};
311 };
312 
313 enum ufs_crypto_key_size {
314 	UFS_CRYPTO_KEY_SIZE_INVALID	= 0x0,
315 	UFS_CRYPTO_KEY_SIZE_128		= 0x1,
316 	UFS_CRYPTO_KEY_SIZE_192		= 0x2,
317 	UFS_CRYPTO_KEY_SIZE_256		= 0x3,
318 	UFS_CRYPTO_KEY_SIZE_512		= 0x4,
319 };
320 
321 enum ufs_crypto_alg {
322 	UFS_CRYPTO_ALG_AES_XTS			= 0x0,
323 	UFS_CRYPTO_ALG_BITLOCKER_AES_CBC	= 0x1,
324 	UFS_CRYPTO_ALG_AES_ECB			= 0x2,
325 	UFS_CRYPTO_ALG_ESSIV_AES_CBC		= 0x3,
326 };
327 
328 /* x-CRYPTOCAP - Crypto Capability X */
329 union ufs_crypto_cap_entry {
330 	__le32 reg_val;
331 	struct {
332 		u8 algorithm_id;
333 		u8 sdus_mask; /* Supported data unit size mask */
334 		u8 key_size;
335 		u8 reserved;
336 	};
337 };
338 
339 #define UFS_CRYPTO_CONFIGURATION_ENABLE (1 << 7)
340 #define UFS_CRYPTO_KEY_MAX_SIZE 64
341 /* x-CRYPTOCFG - Crypto Configuration X */
342 union ufs_crypto_cfg_entry {
343 	__le32 reg_val[32];
344 	struct {
345 		u8 crypto_key[UFS_CRYPTO_KEY_MAX_SIZE];
346 		u8 data_unit_size;
347 		u8 crypto_cap_idx;
348 		u8 reserved_1;
349 		u8 config_enable;
350 		u8 reserved_multi_host;
351 		u8 reserved_2;
352 		u8 vsb[2];
353 		u8 reserved_3[56];
354 	};
355 };
356 
357 /*
358  * Request Descriptor Definitions
359  */
360 
361 /* Transfer request command type */
362 enum {
363 	UTP_CMD_TYPE_SCSI		= 0x0,
364 	UTP_CMD_TYPE_UFS		= 0x1,
365 	UTP_CMD_TYPE_DEV_MANAGE		= 0x2,
366 };
367 
368 /* To accommodate UFS2.0 required Command type */
369 enum {
370 	UTP_CMD_TYPE_UFS_STORAGE	= 0x1,
371 };
372 
373 enum {
374 	UTP_SCSI_COMMAND		= 0x00000000,
375 	UTP_NATIVE_UFS_COMMAND		= 0x10000000,
376 	UTP_DEVICE_MANAGEMENT_FUNCTION	= 0x20000000,
377 	UTP_REQ_DESC_INT_CMD		= 0x01000000,
378 	UTP_REQ_DESC_CRYPTO_ENABLE_CMD	= 0x00800000,
379 };
380 
381 /* UTP Transfer Request Data Direction (DD) */
382 enum {
383 	UTP_NO_DATA_TRANSFER	= 0x00000000,
384 	UTP_HOST_TO_DEVICE	= 0x02000000,
385 	UTP_DEVICE_TO_HOST	= 0x04000000,
386 };
387 
388 /* Overall command status values */
389 enum utp_ocs {
390 	OCS_SUCCESS			= 0x0,
391 	OCS_INVALID_CMD_TABLE_ATTR	= 0x1,
392 	OCS_INVALID_PRDT_ATTR		= 0x2,
393 	OCS_MISMATCH_DATA_BUF_SIZE	= 0x3,
394 	OCS_MISMATCH_RESP_UPIU_SIZE	= 0x4,
395 	OCS_PEER_COMM_FAILURE		= 0x5,
396 	OCS_ABORTED			= 0x6,
397 	OCS_FATAL_ERROR			= 0x7,
398 	OCS_DEVICE_FATAL_ERROR		= 0x8,
399 	OCS_INVALID_CRYPTO_CONFIG	= 0x9,
400 	OCS_GENERAL_CRYPTO_ERROR	= 0xA,
401 	OCS_INVALID_COMMAND_STATUS	= 0x0F,
402 };
403 
404 enum {
405 	MASK_OCS			= 0x0F,
406 };
407 
408 /* The maximum length of the data byte count field in the PRDT is 256KB */
409 #define PRDT_DATA_BYTE_COUNT_MAX	(256 * 1024)
410 /* The granularity of the data byte count field in the PRDT is 32-bit */
411 #define PRDT_DATA_BYTE_COUNT_PAD	4
412 
413 /**
414  * struct ufshcd_sg_entry - UFSHCI PRD Entry
415  * @addr: Physical address; DW-0 and DW-1.
416  * @reserved: Reserved for future use DW-2
417  * @size: size of physical segment DW-3
418  */
419 struct ufshcd_sg_entry {
420 	__le64    addr;
421 	__le32    reserved;
422 	__le32    size;
423 	/*
424 	 * followed by variant-specific fields if
425 	 * hba->sg_entry_size != sizeof(struct ufshcd_sg_entry)
426 	 */
427 };
428 
429 /**
430  * struct utp_transfer_cmd_desc - UTP Command Descriptor (UCD)
431  * @command_upiu: Command UPIU Frame address
432  * @response_upiu: Response UPIU Frame address
433  * @prd_table: Physical Region Descriptor: an array of SG_ALL struct
434  *	ufshcd_sg_entry's.  Variant-specific fields may be present after each.
435  */
436 struct utp_transfer_cmd_desc {
437 	u8 command_upiu[ALIGNED_UPIU_SIZE];
438 	u8 response_upiu[ALIGNED_UPIU_SIZE];
439 	u8 prd_table[];
440 };
441 
442 #define sizeof_utp_transfer_cmd_desc(hba)	\
443 	(sizeof(struct utp_transfer_cmd_desc) + SG_ALL * (hba)->sg_entry_size)
444 
445 /**
446  * struct request_desc_header - Descriptor Header common to both UTRD and UTMRD
447  * @dword0: Descriptor Header DW0
448  * @dword1: Descriptor Header DW1
449  * @dword2: Descriptor Header DW2
450  * @dword3: Descriptor Header DW3
451  */
452 struct request_desc_header {
453 	__le32 dword_0;
454 	__le32 dword_1;
455 	__le32 dword_2;
456 	__le32 dword_3;
457 };
458 
459 /**
460  * struct utp_transfer_req_desc - UTP Transfer Request Descriptor (UTRD)
461  * @header: UTRD header DW-0 to DW-3
462  * @command_desc_base_addr_lo: UCD base address low DW-4
463  * @command_desc_base_addr_hi: UCD base address high DW-5
464  * @response_upiu_length: response UPIU length DW-6
465  * @response_upiu_offset: response UPIU offset DW-6
466  * @prd_table_length: Physical region descriptor length DW-7
467  * @prd_table_offset: Physical region descriptor offset DW-7
468  */
469 struct utp_transfer_req_desc {
470 
471 	/* DW 0-3 */
472 	struct request_desc_header header;
473 
474 	/* DW 4-5*/
475 	__le32  command_desc_base_addr_lo;
476 	__le32  command_desc_base_addr_hi;
477 
478 	/* DW 6 */
479 	__le16  response_upiu_length;
480 	__le16  response_upiu_offset;
481 
482 	/* DW 7 */
483 	__le16  prd_table_length;
484 	__le16  prd_table_offset;
485 };
486 
487 /*
488  * UTMRD structure.
489  */
490 struct utp_task_req_desc {
491 	/* DW 0-3 */
492 	struct request_desc_header header;
493 
494 	/* DW 4-11 - Task request UPIU structure */
495 	struct {
496 		struct utp_upiu_header	req_header;
497 		__be32			input_param1;
498 		__be32			input_param2;
499 		__be32			input_param3;
500 		__be32			__reserved1[2];
501 	} upiu_req;
502 
503 	/* DW 12-19 - Task Management Response UPIU structure */
504 	struct {
505 		struct utp_upiu_header	rsp_header;
506 		__be32			output_param1;
507 		__be32			output_param2;
508 		__be32			__reserved2[3];
509 	} upiu_rsp;
510 };
511 
512 #endif /* End of Header */
513