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1/*2 * Copyright 2018 Advanced Micro Devices, Inc.3 *4 * Permission is hereby granted, free of charge, to any person obtaining a5 * copy of this software and associated documentation files (the "Software"),6 * to deal in the Software without restriction, including without limitation7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,8 * and/or sell copies of the Software, and to permit persons to whom the9 * Software is furnished to do so, subject to the following conditions:10 *11 * The above copyright notice and this permission notice shall be included in12 * all copies or substantial portions of the Software.13 *14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR20 * OTHER DEALINGS IN THE SOFTWARE.21 *22 * Authors: AMD23 *24 */25 26#ifndef MOD_HDCP_H_27#define MOD_HDCP_H_28 29#include "os_types.h"30#include "signal_types.h"31 32/* Forward Declarations */33struct mod_hdcp;34 35#define MAX_NUM_OF_DISPLAYS 636#define MAX_NUM_OF_ATTEMPTS 437#define MAX_NUM_OF_ERROR_TRACE 1038 39/* detailed return status */40enum mod_hdcp_status {41	MOD_HDCP_STATUS_SUCCESS = 0,42	MOD_HDCP_STATUS_FAILURE,43	MOD_HDCP_STATUS_RESET_NEEDED,44	MOD_HDCP_STATUS_DISPLAY_OUT_OF_BOUND,45	MOD_HDCP_STATUS_DISPLAY_NOT_FOUND,46	MOD_HDCP_STATUS_INVALID_STATE,47	MOD_HDCP_STATUS_NOT_IMPLEMENTED,48	MOD_HDCP_STATUS_INTERNAL_POLICY_FAILURE,49	MOD_HDCP_STATUS_UPDATE_TOPOLOGY_FAILURE,50	MOD_HDCP_STATUS_CREATE_PSP_SERVICE_FAILURE,51	MOD_HDCP_STATUS_DESTROY_PSP_SERVICE_FAILURE,52	MOD_HDCP_STATUS_HDCP1_CREATE_SESSION_FAILURE,53	MOD_HDCP_STATUS_HDCP1_DESTROY_SESSION_FAILURE,54	MOD_HDCP_STATUS_HDCP1_VALIDATE_ENCRYPTION_FAILURE,55	MOD_HDCP_STATUS_HDCP1_NOT_HDCP_REPEATER,56	MOD_HDCP_STATUS_HDCP1_NOT_CAPABLE,57	MOD_HDCP_STATUS_HDCP1_R0_PRIME_PENDING,58	MOD_HDCP_STATUS_HDCP1_VALIDATE_RX_FAILURE,59	MOD_HDCP_STATUS_HDCP1_BKSV_REVOKED,60	MOD_HDCP_STATUS_HDCP1_KSV_LIST_NOT_READY,61	MOD_HDCP_STATUS_HDCP1_VALIDATE_KSV_LIST_FAILURE,62	MOD_HDCP_STATUS_HDCP1_KSV_LIST_REVOKED,63	MOD_HDCP_STATUS_HDCP1_ENABLE_ENCRYPTION_FAILURE,64	MOD_HDCP_STATUS_HDCP1_ENABLE_STREAM_ENCRYPTION_FAILURE,65	MOD_HDCP_STATUS_HDCP1_MAX_CASCADE_EXCEEDED_FAILURE,66	MOD_HDCP_STATUS_HDCP1_MAX_DEVS_EXCEEDED_FAILURE,67	MOD_HDCP_STATUS_HDCP1_DEVICE_COUNT_MISMATCH_FAILURE,68	MOD_HDCP_STATUS_HDCP1_LINK_INTEGRITY_FAILURE,69	MOD_HDCP_STATUS_HDCP1_REAUTH_REQUEST_ISSUED,70	MOD_HDCP_STATUS_HDCP1_LINK_MAINTENANCE_FAILURE,71	MOD_HDCP_STATUS_HDCP1_INVALID_BKSV,72	MOD_HDCP_STATUS_DDC_FAILURE, /* TODO: specific errors */73	MOD_HDCP_STATUS_INVALID_OPERATION,74	MOD_HDCP_STATUS_HDCP2_NOT_CAPABLE,75	MOD_HDCP_STATUS_HDCP2_CREATE_SESSION_FAILURE,76	MOD_HDCP_STATUS_HDCP2_DESTROY_SESSION_FAILURE,77	MOD_HDCP_STATUS_HDCP2_PREP_AKE_INIT_FAILURE,78	MOD_HDCP_STATUS_HDCP2_AKE_CERT_PENDING,79	MOD_HDCP_STATUS_HDCP2_H_PRIME_PENDING,80	MOD_HDCP_STATUS_HDCP2_PAIRING_INFO_PENDING,81	MOD_HDCP_STATUS_HDCP2_VALIDATE_AKE_CERT_FAILURE,82	MOD_HDCP_STATUS_HDCP2_AKE_CERT_REVOKED,83	MOD_HDCP_STATUS_HDCP2_VALIDATE_H_PRIME_FAILURE,84	MOD_HDCP_STATUS_HDCP2_VALIDATE_PAIRING_INFO_FAILURE,85	MOD_HDCP_STATUS_HDCP2_PREP_LC_INIT_FAILURE,86	MOD_HDCP_STATUS_HDCP2_L_PRIME_PENDING,87	MOD_HDCP_STATUS_HDCP2_VALIDATE_L_PRIME_FAILURE,88	MOD_HDCP_STATUS_HDCP2_PREP_EKS_FAILURE,89	MOD_HDCP_STATUS_HDCP2_ENABLE_ENCRYPTION_FAILURE,90	MOD_HDCP_STATUS_HDCP2_RX_ID_LIST_NOT_READY,91	MOD_HDCP_STATUS_HDCP2_VALIDATE_RX_ID_LIST_FAILURE,92	MOD_HDCP_STATUS_HDCP2_RX_ID_LIST_REVOKED,93	MOD_HDCP_STATUS_HDCP2_ENABLE_STREAM_ENCRYPTION_FAILURE,94	MOD_HDCP_STATUS_HDCP2_STREAM_READY_PENDING,95	MOD_HDCP_STATUS_HDCP2_VALIDATE_STREAM_READY_FAILURE,96	MOD_HDCP_STATUS_HDCP2_PREPARE_STREAM_MANAGEMENT_FAILURE,97	MOD_HDCP_STATUS_HDCP2_REAUTH_REQUEST,98	MOD_HDCP_STATUS_HDCP2_REAUTH_LINK_INTEGRITY_FAILURE,99	MOD_HDCP_STATUS_HDCP2_DEVICE_COUNT_MISMATCH_FAILURE,100	MOD_HDCP_STATUS_UNSUPPORTED_PSP_VER_FAILURE,101};102 103struct mod_hdcp_displayport {104	uint8_t rev;105	uint8_t assr_enabled;106	uint8_t mst_enabled;107	uint8_t dp2_enabled;108	uint8_t usb4_enabled;109};110 111struct mod_hdcp_hdmi {112	uint8_t reserved;113};114enum mod_hdcp_operation_mode {115	MOD_HDCP_MODE_OFF,116	MOD_HDCP_MODE_DEFAULT,117	MOD_HDCP_MODE_DP118};119 120enum mod_hdcp_display_state {121	MOD_HDCP_DISPLAY_INACTIVE = 0,122	MOD_HDCP_DISPLAY_ACTIVE,123	MOD_HDCP_DISPLAY_ENCRYPTION_ENABLED124};125 126struct mod_hdcp_psp_caps {127	uint8_t dtm_v3_supported;128};129 130enum mod_hdcp_display_disable_option {131	MOD_HDCP_DISPLAY_NOT_DISABLE = 0,132	MOD_HDCP_DISPLAY_DISABLE_AUTHENTICATION,133	MOD_HDCP_DISPLAY_DISABLE_ENCRYPTION,134};135 136struct mod_hdcp_ddc {137	void *handle;138	struct {139		bool (*read_i2c)(void *handle,140				uint32_t address,141				uint8_t offset,142				uint8_t *data,143				uint32_t size);144		bool (*write_i2c)(void *handle,145				uint32_t address,146				const uint8_t *data,147				uint32_t size);148		bool (*read_dpcd)(void *handle,149				uint32_t address,150				uint8_t *data,151				uint32_t size);152		bool (*write_dpcd)(void *handle,153				uint32_t address,154				const uint8_t *data,155				uint32_t size);156	} funcs;157};158 159struct mod_hdcp_psp {160	void *handle;161	void *funcs;162	struct mod_hdcp_psp_caps caps;163};164 165struct mod_hdcp_display_adjustment {166	uint8_t disable			: 2;167	uint8_t reserved		: 6;168};169 170struct mod_hdcp_link_adjustment_hdcp1 {171	uint8_t disable			: 1;172	uint8_t postpone_encryption	: 1;173	uint8_t min_auth_retries_wa : 1;174	uint8_t reserved		: 5;175};176 177enum mod_hdcp_force_hdcp_type {178	MOD_HDCP_FORCE_TYPE_MAX = 0,179	MOD_HDCP_FORCE_TYPE_0,180	MOD_HDCP_FORCE_TYPE_1181};182 183struct mod_hdcp_link_adjustment_hdcp2 {184	uint8_t disable			: 1;185	uint8_t force_type		: 2;186	uint8_t force_no_stored_km	: 1;187	uint8_t increase_h_prime_timeout: 1;188	uint8_t reserved		: 3;189};190 191struct mod_hdcp_link_adjustment {192	uint8_t auth_delay;193	struct mod_hdcp_link_adjustment_hdcp1 hdcp1;194	struct mod_hdcp_link_adjustment_hdcp2 hdcp2;195};196 197struct mod_hdcp_error {198	enum mod_hdcp_status status;199	uint8_t state_id;200};201 202struct mod_hdcp_trace {203	struct mod_hdcp_error errors[MAX_NUM_OF_ERROR_TRACE];204	uint8_t error_count;205};206 207enum mod_hdcp_encryption_status {208	MOD_HDCP_ENCRYPTION_STATUS_HDCP_OFF = 0,209	MOD_HDCP_ENCRYPTION_STATUS_HDCP1_ON,210	MOD_HDCP_ENCRYPTION_STATUS_HDCP2_TYPE0_ON,211	MOD_HDCP_ENCRYPTION_STATUS_HDCP2_TYPE1_ON,212	MOD_HDCP_ENCRYPTION_STATUS_HDCP2_ON213};214 215/* per link events dm has to notify to hdcp module */216enum mod_hdcp_event {217	MOD_HDCP_EVENT_CALLBACK = 0,218	MOD_HDCP_EVENT_WATCHDOG_TIMEOUT,219	MOD_HDCP_EVENT_CPIRQ220};221 222/* output flags from module requesting timer operations */223struct mod_hdcp_output {224	uint8_t callback_needed;225	uint8_t callback_stop;226	uint8_t watchdog_timer_needed;227	uint8_t watchdog_timer_stop;228	uint16_t callback_delay;229	uint16_t watchdog_timer_delay;230	uint8_t auth_complete;231};232 233/* used to represent per display info */234struct mod_hdcp_display {235	enum mod_hdcp_display_state state;236	uint8_t index;237	uint8_t controller;238	uint8_t dig_fe;239	uint8_t stream_enc_idx;240	union {241		uint8_t vc_id;242	};243	struct mod_hdcp_display_adjustment adjust;244};245 246/* used to represent per link info */247/* in case a link has multiple displays, they share the same link info */248struct mod_hdcp_link {249	enum mod_hdcp_operation_mode mode;250	uint8_t dig_be;251	uint8_t ddc_line;252	uint8_t link_enc_idx;253	uint8_t phy_idx;254	uint8_t dio_output_id;255	uint8_t hdcp_supported_informational;256	union {257		struct mod_hdcp_displayport dp;258		struct mod_hdcp_hdmi hdmi;259	};260	struct mod_hdcp_link_adjustment adjust;261};262 263/* a query structure for a display's hdcp information */264struct mod_hdcp_display_query {265	const struct mod_hdcp_display *display;266	const struct mod_hdcp_link *link;267	const struct mod_hdcp_trace *trace;268	enum mod_hdcp_encryption_status encryption_status;269};270 271/* contains values per on external display configuration change */272struct mod_hdcp_config {273	struct mod_hdcp_psp psp;274	struct mod_hdcp_ddc ddc;275	uint8_t index;276};277 278/* dm allocates memory of mod_hdcp per dc_link on dm init based on memory size*/279size_t mod_hdcp_get_memory_size(void);280 281/* called per link on link creation */282enum mod_hdcp_status mod_hdcp_setup(struct mod_hdcp *hdcp,283		struct mod_hdcp_config *config);284 285/* called per link on link destroy */286enum mod_hdcp_status mod_hdcp_teardown(struct mod_hdcp *hdcp);287 288/* called per display after stream is enabled */289enum mod_hdcp_status mod_hdcp_add_display(struct mod_hdcp *hdcp,290		struct mod_hdcp_link *link, struct mod_hdcp_display *display,291		struct mod_hdcp_output *output);292 293/* called per display before stream is disabled */294enum mod_hdcp_status mod_hdcp_remove_display(struct mod_hdcp *hdcp,295		uint8_t index, struct mod_hdcp_output *output);296 297/* called per display to apply new authentication adjustment */298enum mod_hdcp_status mod_hdcp_update_display(struct mod_hdcp *hdcp,299		uint8_t index,300		struct mod_hdcp_link_adjustment *link_adjust,301		struct mod_hdcp_display_adjustment *display_adjust,302		struct mod_hdcp_output *output);303 304/* called to query hdcp information on a specific index */305enum mod_hdcp_status mod_hdcp_query_display(struct mod_hdcp *hdcp,306		uint8_t index, struct mod_hdcp_display_query *query);307 308/* called per link on connectivity change */309enum mod_hdcp_status mod_hdcp_reset_connection(struct mod_hdcp *hdcp,310		struct mod_hdcp_output *output);311 312/* called per link on events (i.e. callback, watchdog, CP_IRQ) */313enum mod_hdcp_status mod_hdcp_process_event(struct mod_hdcp *hdcp,314		enum mod_hdcp_event event, struct mod_hdcp_output *output);315 316/* called to convert enum mod_hdcp_status to c string */317char *mod_hdcp_status_to_str(int32_t status);318 319/* called to convert state id to c string */320char *mod_hdcp_state_id_to_str(int32_t id);321 322/* called to convert signal type to operation mode */323enum mod_hdcp_operation_mode mod_hdcp_signal_type_to_operation_mode(324		enum signal_type signal);325#endif /* MOD_HDCP_H_ */326