1 /* 2 * Copyright 2019 Advanced Micro Devices, Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * 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 OR 20 * OTHER DEALINGS IN THE SOFTWARE. 21 * 22 */ 23 24 #ifndef _TA_SECUREDISPLAY_IF_H 25 #define _TA_SECUREDISPLAY_IF_H 26 27 /** Secure Display related enumerations */ 28 /**********************************************************/ 29 30 /** @enum ta_securedisplay_command 31 * Secure Display Command ID 32 */ 33 enum ta_securedisplay_command { 34 /* Query whether TA is responding used only for validation purpose */ 35 TA_SECUREDISPLAY_COMMAND__QUERY_TA = 1, 36 /* Send region of Interest and CRC value to I2C */ 37 TA_SECUREDISPLAY_COMMAND__SEND_ROI_CRC = 2, 38 /* Maximum Command ID */ 39 TA_SECUREDISPLAY_COMMAND__MAX_ID = 0x7FFFFFFF, 40 }; 41 42 /** @enum ta_securedisplay_status 43 * Secure Display status returns in shared buffer status 44 */ 45 enum ta_securedisplay_status { 46 TA_SECUREDISPLAY_STATUS__SUCCESS = 0x00, /* Success */ 47 TA_SECUREDISPLAY_STATUS__GENERIC_FAILURE = 0x01, /* Generic Failure */ 48 TA_SECUREDISPLAY_STATUS__INVALID_PARAMETER = 0x02, /* Invalid Parameter */ 49 TA_SECUREDISPLAY_STATUS__NULL_POINTER = 0x03, /* Null Pointer*/ 50 TA_SECUREDISPLAY_STATUS__I2C_WRITE_ERROR = 0x04, /* Fail to Write to I2C */ 51 TA_SECUREDISPLAY_STATUS__READ_DIO_SCRATCH_ERROR = 0x05, /*Fail Read DIO Scratch Register*/ 52 TA_SECUREDISPLAY_STATUS__READ_CRC_ERROR = 0x06, /* Fail to Read CRC*/ 53 TA_SECUREDISPLAY_STATUS__I2C_INIT_ERROR = 0x07, /* Failed to initialize I2C */ 54 55 TA_SECUREDISPLAY_STATUS__MAX = 0x7FFFFFFF,/* Maximum Value for status*/ 56 }; 57 58 /** @enum ta_securedisplay_max_phy 59 * Physical ID number to use for reading corresponding DIO Scratch register for ROI 60 */ 61 enum ta_securedisplay_max_phy { 62 TA_SECUREDISPLAY_PHY0 = 0, 63 TA_SECUREDISPLAY_PHY1 = 1, 64 TA_SECUREDISPLAY_PHY2 = 2, 65 TA_SECUREDISPLAY_PHY3 = 3, 66 TA_SECUREDISPLAY_MAX_PHY = 4, 67 }; 68 69 /** @enum ta_securedisplay_ta_query_cmd_ret 70 * A predefined specific reteurn value which is 0xAB only used to validate 71 * communication to Secure Display TA is functional. 72 * This value is used to validate whether TA is responding successfully 73 */ 74 enum ta_securedisplay_ta_query_cmd_ret { 75 /* This is a value to validate if TA is loaded successfully */ 76 TA_SECUREDISPLAY_QUERY_CMD_RET = 0xAB, 77 }; 78 79 /** @enum ta_securedisplay_buffer_size 80 * I2C Buffer size which contains 8 bytes of ROI (X start, X end, Y start, Y end) 81 * and 6 bytes of CRC( R,G,B) and 1 byte for physical ID 82 */ 83 enum ta_securedisplay_buffer_size { 84 /* 15 bytes = 8 byte (ROI) + 6 byte(CRC) + 1 byte(phy_id) */ 85 TA_SECUREDISPLAY_I2C_BUFFER_SIZE = 15, 86 }; 87 88 /** Input/output structures for Secure Display commands */ 89 /**********************************************************/ 90 /** 91 * Input structures 92 */ 93 94 /** @struct ta_securedisplay_send_roi_crc_input 95 * Physical ID to determine which DIO scratch register should be used to get ROI 96 */ 97 struct ta_securedisplay_send_roi_crc_input { 98 uint32_t phy_id; /* Physical ID */ 99 }; 100 101 /** @union ta_securedisplay_cmd_input 102 * Input buffer 103 */ 104 union ta_securedisplay_cmd_input { 105 /* send ROI and CRC input buffer format */ 106 struct ta_securedisplay_send_roi_crc_input send_roi_crc; 107 uint32_t reserved[4]; 108 }; 109 110 /** 111 * Output structures 112 */ 113 114 /** @struct ta_securedisplay_query_ta_output 115 * Output buffer format for query TA whether TA is responding used only for validation purpose 116 */ 117 struct ta_securedisplay_query_ta_output { 118 /* return value from TA when it is queried for validation purpose only */ 119 uint32_t query_cmd_ret; 120 }; 121 122 /** @struct ta_securedisplay_send_roi_crc_output 123 * Output buffer format for send ROI CRC command which will pass I2c buffer created inside TA 124 * and used to write to I2C used only for validation purpose 125 */ 126 struct ta_securedisplay_send_roi_crc_output { 127 uint8_t i2c_buf[TA_SECUREDISPLAY_I2C_BUFFER_SIZE]; /* I2C buffer */ 128 uint8_t reserved; 129 }; 130 131 /** @union ta_securedisplay_cmd_output 132 * Output buffer 133 */ 134 union ta_securedisplay_cmd_output { 135 /* Query TA output buffer format used only for validation purpose*/ 136 struct ta_securedisplay_query_ta_output query_ta; 137 /* Send ROI CRC output buffer format used only for validation purpose */ 138 struct ta_securedisplay_send_roi_crc_output send_roi_crc; 139 uint32_t reserved[4]; 140 }; 141 142 /** @struct securedisplay_cmd 143 * Secure Display Command which is shared buffer memory 144 */ 145 struct securedisplay_cmd { 146 uint32_t cmd_id; /* +0 Bytes Command ID */ 147 enum ta_securedisplay_status status; /* +4 Bytes Status of Secure Display TA */ 148 uint32_t reserved[2]; /* +8 Bytes Reserved */ 149 union ta_securedisplay_cmd_input securedisplay_in_message; /* +16 Bytes Input Buffer */ 150 union ta_securedisplay_cmd_output securedisplay_out_message;/* +32 Bytes Output Buffer */ 151 /**@note Total 48 Bytes */ 152 }; 153 154 #endif //_TA_SECUREDISPLAY_IF_H 155 156