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
7enum qcom_scm_convention {
8	SMC_CONVENTION_UNKNOWN,
9	SMC_CONVENTION_LEGACY,
10	SMC_CONVENTION_ARM_32,
11	SMC_CONVENTION_ARM_64,
12};
13
14extern enum qcom_scm_convention qcom_scm_convention;
15
16#define MAX_QCOM_SCM_ARGS 10
17#define MAX_QCOM_SCM_RETS 3
18
19enum 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 */
47struct 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 */
59struct qcom_scm_res {
60	u64 result[MAX_QCOM_SCM_RETS];
61};
62
63#define SCM_SMC_FNID(s, c)	((((s) & 0xFF) << 8) | ((c) & 0xFF))
64extern 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))
71extern int scm_legacy_call_atomic(struct device *dev,
72				  const struct qcom_scm_desc *desc,
73				  struct qcom_scm_res *res);
74extern 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
121extern 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
132static 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