1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* Copyright (c) 2010-2015,2019 The Linux Foundation. All rights reserved. 3 */ 4 #ifndef __QCOM_SCM_INT_H 5 #define __QCOM_SCM_INT_H 6 7 enum qcom_scm_convention { 8 SMC_CONVENTION_UNKNOWN, 9 SMC_CONVENTION_LEGACY, 10 SMC_CONVENTION_ARM_32, 11 SMC_CONVENTION_ARM_64, 12 }; 13 14 extern enum qcom_scm_convention qcom_scm_convention; 15 16 #define MAX_QCOM_SCM_ARGS 10 17 #define MAX_QCOM_SCM_RETS 3 18 19 enum qcom_scm_arg_types { 20 QCOM_SCM_VAL, 21 QCOM_SCM_RO, 22 QCOM_SCM_RW, 23 QCOM_SCM_BUFVAL, 24 }; 25 26 #define QCOM_SCM_ARGS_IMPL(num, a, b, c, d, e, f, g, h, i, j, ...) (\ 27 (((a) & 0x3) << 4) | \ 28 (((b) & 0x3) << 6) | \ 29 (((c) & 0x3) << 8) | \ 30 (((d) & 0x3) << 10) | \ 31 (((e) & 0x3) << 12) | \ 32 (((f) & 0x3) << 14) | \ 33 (((g) & 0x3) << 16) | \ 34 (((h) & 0x3) << 18) | \ 35 (((i) & 0x3) << 20) | \ 36 (((j) & 0x3) << 22) | \ 37 ((num) & 0xf)) 38 39 #define QCOM_SCM_ARGS(...) QCOM_SCM_ARGS_IMPL(__VA_ARGS__, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0) 40 41 42 /** 43 * struct qcom_scm_desc 44 * @arginfo: Metadata describing the arguments in args[] 45 * @args: The array of arguments for the secure syscall 46 */ 47 struct qcom_scm_desc { 48 u32 svc; 49 u32 cmd; 50 u32 arginfo; 51 u64 args[MAX_QCOM_SCM_ARGS]; 52 u32 owner; 53 }; 54 55 /** 56 * struct qcom_scm_res 57 * @result: The values returned by the secure syscall 58 */ 59 struct qcom_scm_res { 60 u64 result[MAX_QCOM_SCM_RETS]; 61 }; 62 63 #define SCM_SMC_FNID(s, c) ((((s) & 0xFF) << 8) | ((c) & 0xFF)) 64 extern int __scm_smc_call(struct device *dev, const struct qcom_scm_desc *desc, 65 enum qcom_scm_convention qcom_convention, 66 struct qcom_scm_res *res, bool atomic); 67 #define scm_smc_call(dev, desc, res, atomic) \ 68 __scm_smc_call((dev), (desc), qcom_scm_convention, (res), (atomic)) 69 70 #define SCM_LEGACY_FNID(s, c) (((s) << 10) | ((c) & 0x3ff)) 71 extern int scm_legacy_call_atomic(struct device *dev, 72 const struct qcom_scm_desc *desc, 73 struct qcom_scm_res *res); 74 extern int scm_legacy_call(struct device *dev, const struct qcom_scm_desc *desc, 75 struct qcom_scm_res *res); 76 77 #define QCOM_SCM_SVC_BOOT 0x01 78 #define QCOM_SCM_BOOT_SET_ADDR 0x01 79 #define QCOM_SCM_BOOT_TERMINATE_PC 0x02 80 #define QCOM_SCM_BOOT_SET_DLOAD_MODE 0x10 81 #define QCOM_SCM_BOOT_SET_REMOTE_STATE 0x0a 82 #define QCOM_SCM_FLUSH_FLAG_MASK 0x3 83 84 #define QCOM_SCM_SVC_PIL 0x02 85 #define QCOM_SCM_PIL_PAS_INIT_IMAGE 0x01 86 #define QCOM_SCM_PIL_PAS_MEM_SETUP 0x02 87 #define QCOM_SCM_PIL_PAS_AUTH_AND_RESET 0x05 88 #define QCOM_SCM_PIL_PAS_SHUTDOWN 0x06 89 #define QCOM_SCM_PIL_PAS_IS_SUPPORTED 0x07 90 #define QCOM_SCM_PIL_PAS_MSS_RESET 0x0a 91 92 #define QCOM_SCM_SVC_IO 0x05 93 #define QCOM_SCM_IO_READ 0x01 94 #define QCOM_SCM_IO_WRITE 0x02 95 96 #define QCOM_SCM_SVC_INFO 0x06 97 #define QCOM_SCM_INFO_IS_CALL_AVAIL 0x01 98 99 #define QCOM_SCM_SVC_MP 0x0c 100 #define QCOM_SCM_MP_RESTORE_SEC_CFG 0x02 101 #define QCOM_SCM_MP_IOMMU_SECURE_PTBL_SIZE 0x03 102 #define QCOM_SCM_MP_IOMMU_SECURE_PTBL_INIT 0x04 103 #define QCOM_SCM_MP_VIDEO_VAR 0x08 104 #define QCOM_SCM_MP_ASSIGN 0x16 105 106 #define QCOM_SCM_SVC_OCMEM 0x0f 107 #define QCOM_SCM_OCMEM_LOCK_CMD 0x01 108 #define QCOM_SCM_OCMEM_UNLOCK_CMD 0x02 109 110 #define QCOM_SCM_SVC_ES 0x10 /* Enterprise Security */ 111 #define QCOM_SCM_ES_INVALIDATE_ICE_KEY 0x03 112 #define QCOM_SCM_ES_CONFIG_SET_ICE_KEY 0x04 113 114 #define QCOM_SCM_SVC_HDCP 0x11 115 #define QCOM_SCM_HDCP_INVOKE 0x01 116 117 #define QCOM_SCM_SVC_SMMU_PROGRAM 0x15 118 #define QCOM_SCM_SMMU_CONFIG_ERRATA1 0x03 119 #define QCOM_SCM_SMMU_CONFIG_ERRATA1_CLIENT_ALL 0x02 120 121 extern void __qcom_scm_init(void); 122 123 /* common error codes */ 124 #define QCOM_SCM_V2_EBUSY -12 125 #define QCOM_SCM_ENOMEM -5 126 #define QCOM_SCM_EOPNOTSUPP -4 127 #define QCOM_SCM_EINVAL_ADDR -3 128 #define QCOM_SCM_EINVAL_ARG -2 129 #define QCOM_SCM_ERROR -1 130 #define QCOM_SCM_INTERRUPTED 1 131 132 static inline int qcom_scm_remap_error(int err) 133 { 134 switch (err) { 135 case QCOM_SCM_ERROR: 136 return -EIO; 137 case QCOM_SCM_EINVAL_ADDR: 138 case QCOM_SCM_EINVAL_ARG: 139 return -EINVAL; 140 case QCOM_SCM_EOPNOTSUPP: 141 return -EOPNOTSUPP; 142 case QCOM_SCM_ENOMEM: 143 return -ENOMEM; 144 case QCOM_SCM_V2_EBUSY: 145 return -EBUSY; 146 } 147 return -EINVAL; 148 } 149 150 #endif 151