summaryrefslogtreecommitdiff
path: root/drivers/misc/mei/hdcp/mei_hdcp.h
blob: 5f74b908e486ba52b0b1c4e52ea6c973713e321b (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
/* SPDX-License-Identifier: (GPL-2.0+) */
/*
 * Copyright © 2019 Intel Corporation
 *
 * Authors:
 * Ramalingam C <ramalingam.c@intel.com>
 */

#ifndef __MEI_HDCP_H__
#define __MEI_HDCP_H__

#include <drm/drm_hdcp.h>

/* me_hdcp_status: Enumeration of all HDCP Status Codes */
enum me_hdcp_status {
	ME_HDCP_STATUS_SUCCESS			= 0x0000,

	/* WiDi Generic Status Codes */
	ME_HDCP_STATUS_INTERNAL_ERROR		= 0x1000,
	ME_HDCP_STATUS_UNKNOWN_ERROR		= 0x1001,
	ME_HDCP_STATUS_INCORRECT_API_VERSION	= 0x1002,
	ME_HDCP_STATUS_INVALID_FUNCTION		= 0x1003,
	ME_HDCP_STATUS_INVALID_BUFFER_LENGTH	= 0x1004,
	ME_HDCP_STATUS_INVALID_PARAMS		= 0x1005,
	ME_HDCP_STATUS_AUTHENTICATION_FAILED	= 0x1006,

	/* WiDi Status Codes */
	ME_HDCP_INVALID_SESSION_STATE		= 0x6000,
	ME_HDCP_SRM_FRAGMENT_UNEXPECTED		= 0x6001,
	ME_HDCP_SRM_INVALID_LENGTH		= 0x6002,
	ME_HDCP_SRM_FRAGMENT_OFFSET_INVALID	= 0x6003,
	ME_HDCP_SRM_VERIFICATION_FAILED		= 0x6004,
	ME_HDCP_SRM_VERSION_TOO_OLD		= 0x6005,
	ME_HDCP_RX_CERT_VERIFICATION_FAILED	= 0x6006,
	ME_HDCP_RX_REVOKED			= 0x6007,
	ME_HDCP_H_VERIFICATION_FAILED		= 0x6008,
	ME_HDCP_REPEATER_CHECK_UNEXPECTED	= 0x6009,
	ME_HDCP_TOPOLOGY_MAX_EXCEEDED		= 0x600A,
	ME_HDCP_V_VERIFICATION_FAILED		= 0x600B,
	ME_HDCP_L_VERIFICATION_FAILED		= 0x600C,
	ME_HDCP_STREAM_KEY_ALLOC_FAILED		= 0x600D,
	ME_HDCP_BASE_KEY_RESET_FAILED		= 0x600E,
	ME_HDCP_NONCE_GENERATION_FAILED		= 0x600F,
	ME_HDCP_STATUS_INVALID_E_KEY_STATE	= 0x6010,
	ME_HDCP_STATUS_INVALID_CS_ICV		= 0x6011,
	ME_HDCP_STATUS_INVALID_KB_KEY_STATE	= 0x6012,
	ME_HDCP_STATUS_INVALID_PAVP_MODE_ICV	= 0x6013,
	ME_HDCP_STATUS_INVALID_PAVP_MODE	= 0x6014,
	ME_HDCP_STATUS_LC_MAX_ATTEMPTS		= 0x6015,

	/* New status for HDCP 2.1 */
	ME_HDCP_STATUS_MISMATCH_IN_M		= 0x6016,

	/* New status code for HDCP 2.2 Rx */
	ME_HDCP_STATUS_RX_PROV_NOT_ALLOWED	= 0x6017,
	ME_HDCP_STATUS_RX_PROV_WRONG_SUBJECT	= 0x6018,
	ME_HDCP_RX_NEEDS_PROVISIONING		= 0x6019,
	ME_HDCP_BKSV_ICV_AUTH_FAILED		= 0x6020,
	ME_HDCP_STATUS_INVALID_STREAM_ID	= 0x6021,
	ME_HDCP_STATUS_CHAIN_NOT_INITIALIZED	= 0x6022,
	ME_HDCP_FAIL_NOT_EXPECTED		= 0x6023,
	ME_HDCP_FAIL_HDCP_OFF			= 0x6024,
	ME_HDCP_FAIL_INVALID_PAVP_MEMORY_MODE	= 0x6025,
	ME_HDCP_FAIL_AES_ECB_FAILURE		= 0x6026,
	ME_HDCP_FEATURE_NOT_SUPPORTED		= 0x6027,
	ME_HDCP_DMA_READ_ERROR			= 0x6028,
	ME_HDCP_DMA_WRITE_ERROR			= 0x6029,
	ME_HDCP_FAIL_INVALID_PACKET_SIZE	= 0x6030,
	ME_HDCP_H264_PARSING_ERROR		= 0x6031,
	ME_HDCP_HDCP2_ERRATA_VIDEO_VIOLATION	= 0x6032,
	ME_HDCP_HDCP2_ERRATA_AUDIO_VIOLATION	= 0x6033,
	ME_HDCP_TX_ACTIVE_ERROR			= 0x6034,
	ME_HDCP_MODE_CHANGE_ERROR		= 0x6035,
	ME_HDCP_STREAM_TYPE_ERROR		= 0x6036,
	ME_HDCP_STREAM_MANAGE_NOT_POSSIBLE	= 0x6037,

	ME_HDCP_STATUS_PORT_INVALID_COMMAND	= 0x6038,
	ME_HDCP_STATUS_UNSUPPORTED_PROTOCOL	= 0x6039,
	ME_HDCP_STATUS_INVALID_PORT_INDEX	= 0x603a,
	ME_HDCP_STATUS_TX_AUTH_NEEDED		= 0x603b,
	ME_HDCP_STATUS_NOT_INTEGRATED_PORT	= 0x603c,
	ME_HDCP_STATUS_SESSION_MAX_REACHED	= 0x603d,

	/* hdcp capable bit is not set in rx_caps(error is unique to DP) */
	ME_HDCP_STATUS_NOT_HDCP_CAPABLE		= 0x6041,

	ME_HDCP_STATUS_INVALID_STREAM_COUNT	= 0x6042,
};

#define HDCP_API_VERSION				0x00010000

#define HDCP_M_LEN					16
#define HDCP_KH_LEN					16

/* Payload Buffer size(Excluding Header) for CMDs and corresponding response */
/* Wired_Tx_AKE  */
#define	WIRED_CMD_BUF_LEN_INITIATE_HDCP2_SESSION_IN	(4 + 1)
#define	WIRED_CMD_BUF_LEN_INITIATE_HDCP2_SESSION_OUT	(4 + 8 + 3)

#define	WIRED_CMD_BUF_LEN_VERIFY_RECEIVER_CERT_IN	(4 + 522 + 8 + 3)
#define	WIRED_CMD_BUF_LEN_VERIFY_RECEIVER_CERT_MIN_OUT	(4 + 1 + 3 + 16 + 16)
#define	WIRED_CMD_BUF_LEN_VERIFY_RECEIVER_CERT_MAX_OUT	(4 + 1 + 3 + 128)

#define	WIRED_CMD_BUF_LEN_AKE_SEND_HPRIME_IN		(4 + 32)
#define	WIRED_CMD_BUF_LEN_AKE_SEND_HPRIME_OUT		(4)

#define	WIRED_CMD_BUF_LEN_SEND_PAIRING_INFO_IN		(4 + 16)
#define	WIRED_CMD_BUF_LEN_SEND_PAIRING_INFO_OUT		(4)

#define	WIRED_CMD_BUF_LEN_CLOSE_SESSION_IN		(4)
#define	WIRED_CMD_BUF_LEN_CLOSE_SESSION_OUT		(4)

/* Wired_Tx_LC */
#define	WIRED_CMD_BUF_LEN_INIT_LOCALITY_CHECK_IN	(4)
#define	WIRED_CMD_BUF_LEN_INIT_LOCALITY_CHECK_OUT	(4 + 8)

#define	WIRED_CMD_BUF_LEN_VALIDATE_LOCALITY_IN		(4 + 32)
#define	WIRED_CMD_BUF_LEN_VALIDATE_LOCALITY_OUT		(4)

/* Wired_Tx_SKE */
#define	WIRED_CMD_BUF_LEN_GET_SESSION_KEY_IN		(4)
#define	WIRED_CMD_BUF_LEN_GET_SESSION_KEY_OUT		(4 + 16 + 8)

/* Wired_Tx_SKE */
#define	WIRED_CMD_BUF_LEN_ENABLE_AUTH_IN		(4 + 1)
#define	WIRED_CMD_BUF_LEN_ENABLE_AUTH_OUT		(4)

/* Wired_Tx_Repeater */
#define	WIRED_CMD_BUF_LEN_VERIFY_REPEATER_IN		(4 + 2 + 3 + 16 + 155)
#define	WIRED_CMD_BUF_LEN_VERIFY_REPEATER_OUT		(4 + 1 + 16)

#define	WIRED_CMD_BUF_LEN_REPEATER_AUTH_STREAM_REQ_MIN_IN	(4 + 3 + \
								32 + 2 + 2)

#define	WIRED_CMD_BUF_LEN_REPEATER_AUTH_STREAM_REQ_OUT		(4)

/* hdcp_command_id: Enumeration of all WIRED HDCP Command IDs */
enum hdcp_command_id {
	_WIDI_COMMAND_BASE		= 0x00030000,
	WIDI_INITIATE_HDCP2_SESSION	= _WIDI_COMMAND_BASE,
	HDCP_GET_SRM_STATUS,
	HDCP_SEND_SRM_FRAGMENT,

	/* The wired HDCP Tx commands */
	_WIRED_COMMAND_BASE		= 0x00031000,
	WIRED_INITIATE_HDCP2_SESSION	= _WIRED_COMMAND_BASE,
	WIRED_VERIFY_RECEIVER_CERT,
	WIRED_AKE_SEND_HPRIME,
	WIRED_AKE_SEND_PAIRING_INFO,
	WIRED_INIT_LOCALITY_CHECK,
	WIRED_VALIDATE_LOCALITY,
	WIRED_GET_SESSION_KEY,
	WIRED_ENABLE_AUTH,
	WIRED_VERIFY_REPEATER,
	WIRED_REPEATER_AUTH_STREAM_REQ,
	WIRED_CLOSE_SESSION,

	_WIRED_COMMANDS_COUNT,
};

union encrypted_buff {
	u8		e_kpub_km[HDCP_2_2_E_KPUB_KM_LEN];
	u8		e_kh_km_m[HDCP_2_2_E_KH_KM_M_LEN];
	struct {
		u8	e_kh_km[HDCP_KH_LEN];
		u8	m[HDCP_M_LEN];
	} __packed;
};

/* HDCP HECI message header. All header values are little endian. */
struct hdcp_cmd_header {
	u32			api_version;
	u32			command_id;
	enum me_hdcp_status	status;
	/* Length of the HECI message (excluding the header) */
	u32			buffer_len;
} __packed;

/* Empty command request or response. No data follows the header. */
struct hdcp_cmd_no_data {
	struct hdcp_cmd_header header;
} __packed;

/* Uniquely identifies the hdcp port being addressed for a given command. */
struct hdcp_port_id {
	u8	integrated_port_type;
	u8	physical_port;
	u16	reserved;
} __packed;

/*
 * Data structures for integrated wired HDCP2 Tx in
 * support of the AKE protocol
 */
/* HECI struct for integrated wired HDCP Tx session initiation. */
struct wired_cmd_initiate_hdcp2_session_in {
	struct hdcp_cmd_header	header;
	struct hdcp_port_id	port;
	u8			protocol; /* for HDMI vs DP */
} __packed;

struct wired_cmd_initiate_hdcp2_session_out {
	struct hdcp_cmd_header	header;
	struct hdcp_port_id	port;
	u8			r_tx[HDCP_2_2_RTX_LEN];
	struct hdcp2_tx_caps	tx_caps;
} __packed;

/* HECI struct for ending an integrated wired HDCP Tx session. */
struct wired_cmd_close_session_in {
	struct hdcp_cmd_header	header;
	struct hdcp_port_id	port;
} __packed;

struct wired_cmd_close_session_out {
	struct hdcp_cmd_header	header;
	struct hdcp_port_id	port;
} __packed;

/* HECI struct for integrated wired HDCP Tx Rx Cert verification. */
struct wired_cmd_verify_receiver_cert_in {
	struct hdcp_cmd_header	header;
	struct hdcp_port_id	port;
	struct hdcp2_cert_rx	cert_rx;
	u8			r_rx[HDCP_2_2_RRX_LEN];
	u8			rx_caps[HDCP_2_2_RXCAPS_LEN];
} __packed;

struct wired_cmd_verify_receiver_cert_out {
	struct hdcp_cmd_header	header;
	struct hdcp_port_id	port;
	u8			km_stored;
	u8			reserved[3];
	union encrypted_buff	ekm_buff;
} __packed;

/* HECI struct for verification of Rx's Hprime in a HDCP Tx session */
struct wired_cmd_ake_send_hprime_in {
	struct hdcp_cmd_header	header;
	struct hdcp_port_id	port;
	u8			h_prime[HDCP_2_2_H_PRIME_LEN];
} __packed;

struct wired_cmd_ake_send_hprime_out {
	struct hdcp_cmd_header	header;
	struct hdcp_port_id	port;
} __packed;

/*
 * HECI struct for sending in AKE pairing data generated by the Rx in an
 * integrated wired HDCP Tx session.
 */
struct wired_cmd_ake_send_pairing_info_in {
	struct hdcp_cmd_header	header;
	struct hdcp_port_id	port;
	u8			e_kh_km[HDCP_2_2_E_KH_KM_LEN];
} __packed;

struct wired_cmd_ake_send_pairing_info_out {
	struct hdcp_cmd_header	header;
	struct hdcp_port_id	port;
} __packed;

/* Data structures for integrated wired HDCP2 Tx in support of the LC protocol*/
/*
 * HECI struct for initiating locality check with an
 * integrated wired HDCP Tx session.
 */
struct wired_cmd_init_locality_check_in {
	struct hdcp_cmd_header	header;
	struct hdcp_port_id	port;
} __packed;

struct wired_cmd_init_locality_check_out {
	struct hdcp_cmd_header	header;
	struct hdcp_port_id	port;
	u8			r_n[HDCP_2_2_RN_LEN];
} __packed;

/*
 * HECI struct for validating an Rx's LPrime value in an
 * integrated wired HDCP Tx session.
 */
struct wired_cmd_validate_locality_in {
	struct hdcp_cmd_header	header;
	struct hdcp_port_id	port;
	u8			l_prime[HDCP_2_2_L_PRIME_LEN];
} __packed;

struct wired_cmd_validate_locality_out {
	struct hdcp_cmd_header	header;
	struct hdcp_port_id	port;
} __packed;

/*
 * Data structures for integrated wired HDCP2 Tx in support of the
 * SKE protocol
 */
/* HECI struct for creating session key */
struct wired_cmd_get_session_key_in {
	struct hdcp_cmd_header	header;
	struct hdcp_port_id	port;
} __packed;

struct wired_cmd_get_session_key_out {
	struct hdcp_cmd_header	header;
	struct hdcp_port_id	port;
	u8			e_dkey_ks[HDCP_2_2_E_DKEY_KS_LEN];
	u8			r_iv[HDCP_2_2_RIV_LEN];
} __packed;

/* HECI struct for the Tx enable authentication command */
struct wired_cmd_enable_auth_in {
	struct hdcp_cmd_header	header;
	struct hdcp_port_id	port;
	u8			stream_type;
} __packed;

struct wired_cmd_enable_auth_out {
	struct hdcp_cmd_header	header;
	struct hdcp_port_id	port;
} __packed;

/*
 * Data structures for integrated wired HDCP2 Tx in support of
 * the repeater protocols
 */
/*
 * HECI struct for verifying the downstream repeater's HDCP topology in an
 * integrated wired HDCP Tx session.
 */
struct wired_cmd_verify_repeater_in {
	struct hdcp_cmd_header	header;
	struct hdcp_port_id	port;
	u8			rx_info[HDCP_2_2_RXINFO_LEN];
	u8			seq_num_v[HDCP_2_2_SEQ_NUM_LEN];
	u8			v_prime[HDCP_2_2_V_PRIME_HALF_LEN];
	u8			receiver_ids[HDCP_2_2_RECEIVER_IDS_MAX_LEN];
} __packed;

struct wired_cmd_verify_repeater_out {
	struct hdcp_cmd_header	header;
	struct hdcp_port_id	port;
	u8			content_type_supported;
	u8			v[HDCP_2_2_V_PRIME_HALF_LEN];
} __packed;

/*
 * HECI struct in support of stream management in an
 * integrated wired HDCP Tx session.
 */
struct wired_cmd_repeater_auth_stream_req_in {
	struct hdcp_cmd_header		header;
	struct hdcp_port_id		port;
	u8				seq_num_m[HDCP_2_2_SEQ_NUM_LEN];
	u8				m_prime[HDCP_2_2_MPRIME_LEN];
	__be16				k;
	struct hdcp2_streamid_type	streams[1];
} __packed;

struct wired_cmd_repeater_auth_stream_req_out {
	struct hdcp_cmd_header	header;
	struct hdcp_port_id	port;
} __packed;

enum mei_fw_ddi {
	MEI_DDI_INVALID_PORT = 0x0,

	MEI_DDI_B = 1,
	MEI_DDI_C,
	MEI_DDI_D,
	MEI_DDI_E,
	MEI_DDI_F,
	MEI_DDI_A = 7,
	MEI_DDI_RANGE_END = MEI_DDI_A,
};
#endif /* __MEI_HDCP_H__ */