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