drivers/firmware/qcom_scm.h

   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                         struct qcom_scm_res *res, bool atomic);
  66
  67 #define SCM_LEGACY_FNID(s, c)   (((s) << 10) | ((c) & 0x3ff))
  68 extern int scm_legacy_call_atomic(struct device *dev,
  69                                   const struct qcom_scm_desc *desc,
  70                                   struct qcom_scm_res *res);
  71 extern int scm_legacy_call(struct device *dev, const struct qcom_scm_desc *desc,
  72                            struct qcom_scm_res *res);
  73
  74 #define QCOM_SCM_SVC_BOOT               0x01
  75 #define QCOM_SCM_BOOT_SET_ADDR          0x01
  76 #define QCOM_SCM_BOOT_TERMINATE_PC      0x02
  77 #define QCOM_SCM_BOOT_SET_DLOAD_MODE    0x10
  78 #define QCOM_SCM_BOOT_SET_REMOTE_STATE  0x0a
  79 #define QCOM_SCM_FLUSH_FLAG_MASK        0x3
  80
  81 #define QCOM_SCM_SVC_PIL                0x02
  82 #define QCOM_SCM_PIL_PAS_INIT_IMAGE     0x01
  83 #define QCOM_SCM_PIL_PAS_MEM_SETUP      0x02
  84 #define QCOM_SCM_PIL_PAS_AUTH_AND_RESET 0x05
  85 #define QCOM_SCM_PIL_PAS_SHUTDOWN       0x06
  86 #define QCOM_SCM_PIL_PAS_IS_SUPPORTED   0x07
  87 #define QCOM_SCM_PIL_PAS_MSS_RESET      0x0a
  88
  89 #define QCOM_SCM_SVC_IO                 0x05
  90 #define QCOM_SCM_IO_READ                0x01
  91 #define QCOM_SCM_IO_WRITE               0x02
  92
  93 #define QCOM_SCM_SVC_INFO               0x06
  94 #define QCOM_SCM_INFO_IS_CALL_AVAIL     0x01
  95
  96 #define QCOM_SCM_SVC_MP                         0x0c
  97 #define QCOM_SCM_MP_RESTORE_SEC_CFG             0x02
  98 #define QCOM_SCM_MP_IOMMU_SECURE_PTBL_SIZE      0x03
  99 #define QCOM_SCM_MP_IOMMU_SECURE_PTBL_INIT      0x04
 100 #define QCOM_SCM_MP_VIDEO_VAR                   0x08
 101 #define QCOM_SCM_MP_ASSIGN                      0x16
 102
 103 #define QCOM_SCM_SVC_OCMEM              0x0f
 104 #define QCOM_SCM_OCMEM_LOCK_CMD         0x01
 105 #define QCOM_SCM_OCMEM_UNLOCK_CMD       0x02
 106
 107 #define QCOM_SCM_SVC_ES                 0x10    /* Enterprise Security */
 108 #define QCOM_SCM_ES_INVALIDATE_ICE_KEY  0x03
 109 #define QCOM_SCM_ES_CONFIG_SET_ICE_KEY  0x04
 110
 111 #define QCOM_SCM_SVC_HDCP               0x11
 112 #define QCOM_SCM_HDCP_INVOKE            0x01
 113
 114 #define QCOM_SCM_SVC_SMMU_PROGRAM               0x15
 115 #define QCOM_SCM_SMMU_CONFIG_ERRATA1            0x03
 116 #define QCOM_SCM_SMMU_CONFIG_ERRATA1_CLIENT_ALL 0x02
 117
 118 extern void __qcom_scm_init(void);
 119
 120 /* common error codes */
 121 #define QCOM_SCM_V2_EBUSY       -12
 122 #define QCOM_SCM_ENOMEM         -5
 123 #define QCOM_SCM_EOPNOTSUPP     -4
 124 #define QCOM_SCM_EINVAL_ADDR    -3
 125 #define QCOM_SCM_EINVAL_ARG     -2
 126 #define QCOM_SCM_ERROR          -1
 127 #define QCOM_SCM_INTERRUPTED    1
 128
 129 static inline int qcom_scm_remap_error(int err)
 130 {
 131         switch (err) {
 132         case QCOM_SCM_ERROR:
 133                 return -EIO;
 134         case QCOM_SCM_EINVAL_ADDR:
 135         case QCOM_SCM_EINVAL_ARG:
 136                 return -EINVAL;
 137         case QCOM_SCM_EOPNOTSUPP:
 138                 return -EOPNOTSUPP;
 139         case QCOM_SCM_ENOMEM:
 140                 return -ENOMEM;
 141         case QCOM_SCM_V2_EBUSY:
 142                 return -EBUSY;
 143         }
 144         return -EINVAL;
 145 }
 146
 147 #endif