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1626eab7 R |
1 | /* SPDX-License-Identifier: (GPL-2.0+) */ |
2 | /* | |
0dcceb35 | 3 | * Copyright © 2017-2019 Intel Corporation |
1626eab7 R |
4 | * |
5 | * Authors: | |
6 | * Ramalingam C <ramalingam.c@intel.com> | |
7 | */ | |
8 | ||
9 | #ifndef _I915_MEI_HDCP_INTERFACE_H_ | |
10 | #define _I915_MEI_HDCP_INTERFACE_H_ | |
11 | ||
12 | #include <linux/mutex.h> | |
13 | #include <linux/device.h> | |
14 | #include <drm/drm_hdcp.h> | |
1626eab7 R |
15 | |
16 | /** | |
17 | * enum hdcp_port_type - HDCP port implementation type defined by ME FW | |
18 | * @HDCP_PORT_TYPE_INVALID: Invalid hdcp port type | |
19 | * @HDCP_PORT_TYPE_INTEGRATED: In-Host HDCP2.x port | |
20 | * @HDCP_PORT_TYPE_LSPCON: HDCP2.2 discrete wired Tx port with LSPCON | |
21 | * (HDMI 2.0) solution | |
22 | * @HDCP_PORT_TYPE_CPDP: HDCP2.2 discrete wired Tx port using the CPDP (DP 1.3) | |
23 | * solution | |
24 | */ | |
25 | enum hdcp_port_type { | |
26 | HDCP_PORT_TYPE_INVALID, | |
27 | HDCP_PORT_TYPE_INTEGRATED, | |
28 | HDCP_PORT_TYPE_LSPCON, | |
29 | HDCP_PORT_TYPE_CPDP | |
30 | }; | |
31 | ||
32 | /** | |
33 | * enum hdcp_wired_protocol - HDCP adaptation used on the port | |
34 | * @HDCP_PROTOCOL_INVALID: Invalid HDCP adaptation protocol | |
35 | * @HDCP_PROTOCOL_HDMI: HDMI adaptation of HDCP used on the port | |
36 | * @HDCP_PROTOCOL_DP: DP adaptation of HDCP used on the port | |
37 | */ | |
38 | enum hdcp_wired_protocol { | |
39 | HDCP_PROTOCOL_INVALID, | |
40 | HDCP_PROTOCOL_HDMI, | |
41 | HDCP_PROTOCOL_DP | |
42 | }; | |
43 | ||
0dcceb35 R |
44 | enum mei_fw_ddi { |
45 | MEI_DDI_INVALID_PORT = 0x0, | |
46 | ||
47 | MEI_DDI_B = 1, | |
48 | MEI_DDI_C, | |
49 | MEI_DDI_D, | |
50 | MEI_DDI_E, | |
51 | MEI_DDI_F, | |
52 | MEI_DDI_A = 7, | |
53 | MEI_DDI_RANGE_END = MEI_DDI_A, | |
54 | }; | |
55 | ||
807c71d5 R |
56 | /** |
57 | * enum mei_fw_tc - ME Firmware defined index for transcoders | |
58 | * @MEI_INVALID_TRANSCODER: Index for Invalid transcoder | |
59 | * @MEI_TRANSCODER_EDP: Index for EDP Transcoder | |
60 | * @MEI_TRANSCODER_DSI0: Index for DSI0 Transcoder | |
61 | * @MEI_TRANSCODER_DSI1: Index for DSI1 Transcoder | |
62 | * @MEI_TRANSCODER_A: Index for Transcoder A | |
63 | * @MEI_TRANSCODER_B: Index for Transcoder B | |
64 | * @MEI_TRANSCODER_C: Index for Transcoder C | |
65 | * @MEI_TRANSCODER_D: Index for Transcoder D | |
66 | */ | |
67 | enum mei_fw_tc { | |
68 | MEI_INVALID_TRANSCODER = 0x00, | |
69 | MEI_TRANSCODER_EDP, | |
70 | MEI_TRANSCODER_DSI0, | |
71 | MEI_TRANSCODER_DSI1, | |
72 | MEI_TRANSCODER_A = 0x10, | |
73 | MEI_TRANSCODER_B, | |
74 | MEI_TRANSCODER_C, | |
75 | MEI_TRANSCODER_D | |
76 | }; | |
77 | ||
1626eab7 R |
78 | /** |
79 | * struct hdcp_port_data - intel specific HDCP port data | |
0dcceb35 | 80 | * @fw_ddi: ddi index as per ME FW |
807c71d5 | 81 | * @fw_tc: transcoder index as per ME FW |
1626eab7 R |
82 | * @port_type: HDCP port type as per ME FW classification |
83 | * @protocol: HDCP adaptation as per ME FW | |
84 | * @k: No of streams transmitted on a port. Only on DP MST this is != 1 | |
85 | * @seq_num_m: Count of RepeaterAuth_Stream_Manage msg propagated. | |
86 | * Initialized to 0 on AKE_INIT. Incremented after every successful | |
87 | * transmission of RepeaterAuth_Stream_Manage message. When it rolls | |
88 | * over re-Auth has to be triggered. | |
89 | * @streams: struct hdcp2_streamid_type[k]. Defines the type and id for the | |
90 | * streams | |
91 | */ | |
92 | struct hdcp_port_data { | |
0dcceb35 | 93 | enum mei_fw_ddi fw_ddi; |
807c71d5 | 94 | enum mei_fw_tc fw_tc; |
1626eab7 R |
95 | u8 port_type; |
96 | u8 protocol; | |
97 | u16 k; | |
98 | u32 seq_num_m; | |
99 | struct hdcp2_streamid_type *streams; | |
100 | }; | |
101 | ||
102 | /** | |
103 | * struct i915_hdcp_component_ops- ops for HDCP2.2 services. | |
104 | * @owner: Module providing the ops | |
105 | * @initiate_hdcp2_session: Initiate a Wired HDCP2.2 Tx Session. | |
106 | * And Prepare AKE_Init. | |
107 | * @verify_receiver_cert_prepare_km: Verify the Receiver Certificate | |
108 | * AKE_Send_Cert and prepare | |
109 | AKE_Stored_Km/AKE_No_Stored_Km | |
110 | * @verify_hprime: Verify AKE_Send_H_prime | |
111 | * @store_pairing_info: Store pairing info received | |
112 | * @initiate_locality_check: Prepare LC_Init | |
113 | * @verify_lprime: Verify lprime | |
114 | * @get_session_key: Prepare SKE_Send_Eks | |
115 | * @repeater_check_flow_prepare_ack: Validate the Downstream topology | |
116 | * and prepare rep_ack | |
117 | * @verify_mprime: Verify mprime | |
118 | * @enable_hdcp_authentication: Mark a port as authenticated. | |
119 | * @close_hdcp_session: Close the Wired HDCP Tx session per port. | |
120 | * This also disables the authenticated state of the port. | |
121 | */ | |
122 | struct i915_hdcp_component_ops { | |
123 | /** | |
124 | * @owner: mei_hdcp module | |
125 | */ | |
126 | struct module *owner; | |
127 | ||
128 | int (*initiate_hdcp2_session)(struct device *dev, | |
129 | struct hdcp_port_data *data, | |
130 | struct hdcp2_ake_init *ake_data); | |
131 | int (*verify_receiver_cert_prepare_km)(struct device *dev, | |
132 | struct hdcp_port_data *data, | |
133 | struct hdcp2_ake_send_cert | |
134 | *rx_cert, | |
135 | bool *km_stored, | |
136 | struct hdcp2_ake_no_stored_km | |
137 | *ek_pub_km, | |
138 | size_t *msg_sz); | |
139 | int (*verify_hprime)(struct device *dev, | |
140 | struct hdcp_port_data *data, | |
141 | struct hdcp2_ake_send_hprime *rx_hprime); | |
142 | int (*store_pairing_info)(struct device *dev, | |
143 | struct hdcp_port_data *data, | |
144 | struct hdcp2_ake_send_pairing_info | |
145 | *pairing_info); | |
146 | int (*initiate_locality_check)(struct device *dev, | |
147 | struct hdcp_port_data *data, | |
148 | struct hdcp2_lc_init *lc_init_data); | |
149 | int (*verify_lprime)(struct device *dev, | |
150 | struct hdcp_port_data *data, | |
151 | struct hdcp2_lc_send_lprime *rx_lprime); | |
152 | int (*get_session_key)(struct device *dev, | |
153 | struct hdcp_port_data *data, | |
154 | struct hdcp2_ske_send_eks *ske_data); | |
155 | int (*repeater_check_flow_prepare_ack)(struct device *dev, | |
156 | struct hdcp_port_data *data, | |
157 | struct hdcp2_rep_send_receiverid_list | |
158 | *rep_topology, | |
159 | struct hdcp2_rep_send_ack | |
160 | *rep_send_ack); | |
161 | int (*verify_mprime)(struct device *dev, | |
162 | struct hdcp_port_data *data, | |
163 | struct hdcp2_rep_stream_ready *stream_ready); | |
164 | int (*enable_hdcp_authentication)(struct device *dev, | |
165 | struct hdcp_port_data *data); | |
166 | int (*close_hdcp_session)(struct device *dev, | |
167 | struct hdcp_port_data *data); | |
168 | }; | |
169 | ||
170 | /** | |
171 | * struct i915_hdcp_component_master - Used for communication between i915 | |
172 | * and mei_hdcp drivers for the HDCP2.2 services | |
173 | * @mei_dev: device that provide the HDCP2.2 service from MEI Bus. | |
174 | * @hdcp_ops: Ops implemented by mei_hdcp driver, used by i915 driver. | |
175 | */ | |
176 | struct i915_hdcp_comp_master { | |
177 | struct device *mei_dev; | |
178 | const struct i915_hdcp_component_ops *ops; | |
179 | ||
180 | /* To protect the above members. */ | |
181 | struct mutex mutex; | |
182 | }; | |
183 | ||
184 | #endif /* _I915_MEI_HDCP_INTERFACE_H_ */ |