1 /* 2 * Copyright (c) 2015 Google, Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining 5 * a copy of this software and associated documentation files 6 * (the "Software"), to deal in the Software without restriction, 7 * including without limitation the rights to use, copy, modify, merge, 8 * publish, distribute, sublicense, and/or sell copies of the Software, 9 * and to permit persons to whom the Software is furnished to do so, 10 * subject to the following conditions: 11 * 12 * The above copyright notice and this permission notice shall be 13 * included in all copies or substantial portions of the Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 18 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY 19 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 20 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 21 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 22 */ 23 24 #ifndef _TRUSTY_LOG_H_ 25 #define _TRUSTY_LOG_H_ 26 27 /* 28 * Ring buffer that supports one secure producer thread and one 29 * linux side consumer thread. 30 */ 31 struct log_rb { 32 volatile uint32_t alloc; 33 volatile uint32_t put; 34 uint32_t sz; 35 volatile char data[0]; 36 } __packed; 37 38 #define SMC_SC_SHARED_LOG_VERSION SMC_STDCALL_NR(SMC_ENTITY_LOGGING, 0) 39 #define SMC_SC_SHARED_LOG_ADD SMC_STDCALL_NR(SMC_ENTITY_LOGGING, 1) 40 #define SMC_SC_SHARED_LOG_RM SMC_STDCALL_NR(SMC_ENTITY_LOGGING, 2) 41 42 #define TRUSTY_LOG_API_VERSION 1 43 44 #endif 45