drivers/firmware/qcom/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 struct device;
   8
   9 enum qcom_scm_convention {
  10         SMC_CONVENTION_UNKNOWN,
  11         SMC_CONVENTION_LEGACY,
  12         SMC_CONVENTION_ARM_32,
  13         SMC_CONVENTION_ARM_64,
  14 };
  15
  16 extern enum qcom_scm_convention qcom_scm_convention;
  17
  18 #define MAX_QCOM_SCM_ARGS 10
  19 #define MAX_QCOM_SCM_RETS 3
  20
  21 enum qcom_scm_arg_types {
  22         QCOM_SCM_VAL,
  23         QCOM_SCM_RO,
  24         QCOM_SCM_RW,
  25         QCOM_SCM_BUFVAL,
  26 };
  27
  28 #define QCOM_SCM_ARGS_IMPL(num, a, b, c, d, e, f, g, h, i, j, ...) (\
  29                            (((a) & 0x3) << 4) | \
  30                            (((b) & 0x3) << 6) | \
  31                            (((c) & 0x3) << 8) | \
  32                            (((d) & 0x3) << 10) | \
  33                            (((e) & 0x3) << 12) | \
  34                            (((f) & 0x3) << 14) | \
  35                            (((g) & 0x3) << 16) | \
  36                            (((h) & 0x3) << 18) | \
  37                            (((i) & 0x3) << 20) | \
  38                            (((j) & 0x3) << 22) | \
  39                            ((num) & 0xf))
  40
  41 #define QCOM_SCM_ARGS(...) QCOM_SCM_ARGS_IMPL(__VA_ARGS__, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0)
  42
  43
  44 /**
  45  * struct qcom_scm_desc
  46  * @arginfo:    Metadata describing the arguments in args[]
  47  * @args:       The array of arguments for the secure syscall
  48  */
  49 struct qcom_scm_desc {
  50         u32 svc;
  51         u32 cmd;
  52         u32 arginfo;
  53         u64 args[MAX_QCOM_SCM_ARGS];
  54         u32 owner;
  55 };
  56
  57 /**
  58  * struct qcom_scm_res
  59  * @result:     The values returned by the secure syscall
  60  */
  61 struct qcom_scm_res {
  62         u64 result[MAX_QCOM_SCM_RETS];
  63 };
  64
  65 int qcom_scm_wait_for_wq_completion(u32 wq_ctx);
  66 int scm_get_wq_ctx(u32 *wq_ctx, u32 *flags, u32 *more_pending);
  67
  68 #define SCM_SMC_FNID(s, c)      ((((s) & 0xFF) << 8) | ((c) & 0xFF))
  69 int __scm_smc_call(struct device *dev, const struct qcom_scm_desc *desc,
  70                    enum qcom_scm_convention qcom_convention,
  71                    struct qcom_scm_res *res, bool atomic);
  72 #define scm_smc_call(dev, desc, res, atomic) \
  73         __scm_smc_call((dev), (desc), qcom_scm_convention, (res), (atomic))
  74
  75 #define SCM_LEGACY_FNID(s, c)   (((s) << 10) | ((c) & 0x3ff))
  76 int scm_legacy_call_atomic(struct device *dev, const struct qcom_scm_desc *desc,
  77                            struct qcom_scm_res *res);
  78 int scm_legacy_call(struct device *dev, const struct qcom_scm_desc *desc,
  79                     struct qcom_scm_res *res);
  80
  81 #define QCOM_SCM_SVC_BOOT               0x01
  82 #define QCOM_SCM_BOOT_SET_ADDR          0x01
  83 #define QCOM_SCM_BOOT_TERMINATE_PC      0x02
  84 #define QCOM_SCM_BOOT_SDI_CONFIG        0x09
  85 #define QCOM_SCM_BOOT_SET_DLOAD_MODE    0x10
  86 #define QCOM_SCM_BOOT_SET_ADDR_MC       0x11
  87 #define QCOM_SCM_BOOT_SET_REMOTE_STATE  0x0a
  88 #define QCOM_SCM_FLUSH_FLAG_MASK        0x3
  89 #define QCOM_SCM_BOOT_MAX_CPUS          4
  90 #define QCOM_SCM_BOOT_MC_FLAG_AARCH64   BIT(0)
  91 #define QCOM_SCM_BOOT_MC_FLAG_COLDBOOT  BIT(1)
  92 #define QCOM_SCM_BOOT_MC_FLAG_WARMBOOT  BIT(2)
  93
  94 #define QCOM_SCM_SVC_PIL                0x02
  95 #define QCOM_SCM_PIL_PAS_INIT_IMAGE     0x01
  96 #define QCOM_SCM_PIL_PAS_MEM_SETUP      0x02
  97 #define QCOM_SCM_PIL_PAS_AUTH_AND_RESET 0x05
  98 #define QCOM_SCM_PIL_PAS_SHUTDOWN       0x06
  99 #define QCOM_SCM_PIL_PAS_IS_SUPPORTED   0x07
 100 #define QCOM_SCM_PIL_PAS_MSS_RESET      0x0a
 101
 102 #define QCOM_SCM_SVC_IO                 0x05
 103 #define QCOM_SCM_IO_READ                0x01
 104 #define QCOM_SCM_IO_WRITE               0x02
 105
 106 #define QCOM_SCM_SVC_INFO               0x06
 107 #define QCOM_SCM_INFO_IS_CALL_AVAIL     0x01
 108
 109 #define QCOM_SCM_SVC_MP                         0x0c
 110 #define QCOM_SCM_MP_RESTORE_SEC_CFG             0x02
 111 #define QCOM_SCM_MP_IOMMU_SECURE_PTBL_SIZE      0x03
 112 #define QCOM_SCM_MP_IOMMU_SECURE_PTBL_INIT      0x04
 113 #define QCOM_SCM_MP_IOMMU_SET_CP_POOL_SIZE      0x05
 114 #define QCOM_SCM_MP_VIDEO_VAR                   0x08
 115 #define QCOM_SCM_MP_ASSIGN                      0x16
 116
 117 #define QCOM_SCM_SVC_OCMEM              0x0f
 118 #define QCOM_SCM_OCMEM_LOCK_CMD         0x01
 119 #define QCOM_SCM_OCMEM_UNLOCK_CMD       0x02
 120
 121 #define QCOM_SCM_SVC_ES                 0x10    /* Enterprise Security */
 122 #define QCOM_SCM_ES_INVALIDATE_ICE_KEY  0x03
 123 #define QCOM_SCM_ES_CONFIG_SET_ICE_KEY  0x04
 124
 125 #define QCOM_SCM_SVC_HDCP               0x11
 126 #define QCOM_SCM_HDCP_INVOKE            0x01
 127
 128 #define QCOM_SCM_SVC_LMH                        0x13
 129 #define QCOM_SCM_LMH_LIMIT_PROFILE_CHANGE       0x01
 130 #define QCOM_SCM_LMH_LIMIT_DCVSH                0x10
 131
 132 #define QCOM_SCM_SVC_SMMU_PROGRAM               0x15
 133 #define QCOM_SCM_SMMU_PT_FORMAT                 0x01
 134 #define QCOM_SCM_SMMU_CONFIG_ERRATA1            0x03
 135 #define QCOM_SCM_SMMU_CONFIG_ERRATA1_CLIENT_ALL 0x02
 136
 137 #define QCOM_SCM_SVC_WAITQ                      0x24
 138 #define QCOM_SCM_WAITQ_RESUME                   0x02
 139 #define QCOM_SCM_WAITQ_GET_WQ_CTX               0x03
 140
 141 /* common error codes */
 142 #define QCOM_SCM_V2_EBUSY       -12
 143 #define QCOM_SCM_ENOMEM         -5
 144 #define QCOM_SCM_EOPNOTSUPP     -4
 145 #define QCOM_SCM_EINVAL_ADDR    -3
 146 #define QCOM_SCM_EINVAL_ARG     -2
 147 #define QCOM_SCM_ERROR          -1
 148 #define QCOM_SCM_INTERRUPTED    1
 149 #define QCOM_SCM_WAITQ_SLEEP    2
 150
 151 static inline int qcom_scm_remap_error(int err)
 152 {
 153         switch (err) {
 154         case QCOM_SCM_ERROR:
 155                 return -EIO;
 156         case QCOM_SCM_EINVAL_ADDR:
 157         case QCOM_SCM_EINVAL_ARG:
 158                 return -EINVAL;
 159         case QCOM_SCM_EOPNOTSUPP:
 160                 return -EOPNOTSUPP;
 161         case QCOM_SCM_ENOMEM:
 162                 return -ENOMEM;
 163         case QCOM_SCM_V2_EBUSY:
 164                 return -EBUSY;
 165         }
 166         return -EINVAL;
 167 }
 168
 169 #endif