pseudo_ta.h

/* SPDX-License-Identifier: BSD-2-Clause */
/*
 * Copyright (c) 2015, Linaro Limited
 */
#ifndef KERNEL_PSEUDO_TA_H
#define KERNEL_PSEUDO_TA_H

#include <assert.h>
#include <compiler.h>
#include <tee_ta_manager.h>
#include <tee_api_types.h>
#include <user_ta_header.h>
//#include <util.h>

#define PTA_MANDATORY_FLAGS (TA_FLAG_SINGLE_INSTANCE | \
                TA_FLAG_MULTI_SESSION | \
                TA_FLAG_INSTANCE_KEEP_ALIVE)
//
//#define PTA_ALLOWED_FLAGS (PTA_MANDATORY_FLAGS | \
//               TA_FLAG_SECURE_DATA_PATH | \
//               TA_FLAG_CONCURRENT)

#define PTA_DEFAULT_FLAGS   PTA_MANDATORY_FLAGS

struct pseudo_ta_head {
    TEE_UUID uuid;
    const char *name;
    uint32_t flags;

    TEE_Result (*create_entry_point)(void);
    void (*destroy_entry_point)(void);
    TEE_Result (*open_session_entry_point)(uint32_t nParamTypes,
            TEE_Param pParams[TEE_NUM_PARAMS],
            void **ppSessionContext);
    void (*close_session_entry_point)(void *pSessionContext);
    TEE_Result (*invoke_command_entry_point)(void *pSessionContext,
            uint32_t nCommandID, uint32_t nParamTypes,
            TEE_Param pParams[TEE_NUM_PARAMS]);
};

#define pseudo_ta_register(...) static const struct pseudo_ta_head __head \
            __used __section("ta_head_section") = { __VA_ARGS__ }


struct pseudo_ta_ctx {
    const struct pseudo_ta_head *pseudo_ta;
    struct tee_ta_ctx ctx;
};

static inline bool is_pseudo_ta_ctx(struct tee_ta_ctx *ctx)
{
    return !(ctx->flags & TA_FLAG_USER_MODE);
}

#define container_of(ptr, type, member) \
  (__extension__({ \
    const typeof(((type *)0)->member) *__ptr = (ptr); \
    (type *)((unsigned long)(__ptr) - offsetof(type, member)); \
  }))

static inline struct pseudo_ta_ctx *to_pseudo_ta_ctx(struct tee_ta_ctx *ctx)
{
//  assert(is_pseudo_ta_ctx(ctx));
    return container_of(ctx, struct pseudo_ta_ctx, ctx);
}

TEE_Result tee_ta_init_pseudo_ta_session(const TEE_UUID *uuid,
            struct tee_ta_session *s);

#endif /* KERNEL_PSEUDO_TA_H */