1 /* 2 * Copyright (c) 2019, Google Inc. All rights reserved 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 /* 25 * Interface for SMC access policy. Implementation of the policy must be 26 * defined per platform. 27 */ 28 29 #include <interface/smc/smc.h> 30 #include <stdint.h> 31 #include <uapi/trusty_uuid.h> 32 33 struct smc_access_policy { 34 /* Check whether a given SMC is allowed */ 35 int (*check_access)(uint32_t smc_nr); 36 /* Check whether a given SMC request is valid */ 37 int (*check_request)(uint32_t smc_nr, 38 const struct uuid* uuid, 39 const struct smc_msg* request); 40 }; 41 42 /* 43 * smc_load_access_policy() - load client's permissions to issue SMCs 44 * @uuid: uuid of the client whose permissions are being loaded 45 * @policy: smc_access_policy to be filled out 46 */ 47 void smc_load_access_policy(const struct uuid* uuid, 48 struct smc_access_policy* policy); 49