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_LMH 0x13
118 #define QCOM_SCM_LMH_LIMIT_PROFILE_CHANGE 0x01
119 #define QCOM_SCM_LMH_LIMIT_DCVSH 0x10
120
121 #define QCOM_SCM_SVC_SMMU_PROGRAM 0x15
122 #define QCOM_SCM_SMMU_CONFIG_ERRATA1 0x03
123 #define QCOM_SCM_SMMU_CONFIG_ERRATA1_CLIENT_ALL 0x02
124
125 extern void __qcom_scm_init(void);
126
127 /* common error codes */
128 #define QCOM_SCM_V2_EBUSY -12
129 #define QCOM_SCM_ENOMEM -5
130 #define QCOM_SCM_EOPNOTSUPP -4
131 #define QCOM_SCM_EINVAL_ADDR -3
132 #define QCOM_SCM_EINVAL_ARG -2
133 #define QCOM_SCM_ERROR -1
134 #define QCOM_SCM_INTERRUPTED 1
135
qcom_scm_remap_error(int err)136 static inline int qcom_scm_remap_error(int err)
137 {
138 switch (err) {
139 case QCOM_SCM_ERROR:
140 return -EIO;
141 case QCOM_SCM_EINVAL_ADDR:
142 case QCOM_SCM_EINVAL_ARG:
143 return -EINVAL;
144 case QCOM_SCM_EOPNOTSUPP:
145 return -EOPNOTSUPP;
146 case QCOM_SCM_ENOMEM:
147 return -ENOMEM;
148 case QCOM_SCM_V2_EBUSY:
149 return -EBUSY;
150 }
151 return -EINVAL;
152 }
153
154 #endif
155