rpmsg_retarget.h

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/*
 * Copyright (c) 2014, Mentor Graphics Corporation
 * All rights reserved.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */
 
#ifndef RPMSG_RETARGET_H
#define RPMSG_RETARGET_H
 
#include <metal/mutex.h>
#include <openamp/open_amp.h>
#include <stdint.h>
 
#if defined __cplusplus
extern "C" {
#endif
 
/* File Operations System call definitions */
#define OPEN_SYSCALL_ID  0x1UL
#define CLOSE_SYSCALL_ID 0x2UL
#define WRITE_SYSCALL_ID 0x3UL
#define READ_SYSCALL_ID  0x4UL
#define ACK_STATUS_ID    0x5UL
 
#define TERM_SYSCALL_ID  0x6UL
 
#define DEFAULT_PROXY_ENDPOINT  0xFFUL
 
struct rpmsg_rpc_data;
 
typedef int (*rpmsg_rpc_poll)(void *arg);
typedef void (*rpmsg_rpc_shutdown_cb)(struct rpmsg_rpc_data *rpc);
 
struct rpmsg_rpc_syscall_header {
        int32_t int_field1;
        int32_t int_field2;
        uint32_t data_len;
};
 
struct rpmsg_rpc_syscall {
        uint32_t id;
        struct rpmsg_rpc_syscall_header args;
};
 
struct rpmsg_rpc_data {
        struct rpmsg_endpoint ept;
        int ept_destroyed;
        atomic_flag nacked;
        void *respbuf;
        size_t respbuf_len;
        rpmsg_rpc_poll poll;
        void *poll_arg;
        rpmsg_rpc_shutdown_cb shutdown_cb;
        metal_mutex_t lock;
        struct metal_spinlock buflock;
};

int rpmsg_rpc_init(struct rpmsg_rpc_data *rpc,
                   struct rpmsg_device *rdev,
                   const char *ept_name, uint32_t ept_addr,
                   uint32_t ept_raddr,
                   void *poll_arg, rpmsg_rpc_poll poll,
                   rpmsg_rpc_shutdown_cb shutdown_cb);

void rpmsg_rpc_release(struct rpmsg_rpc_data *rpc);

int rpmsg_rpc_send(struct rpmsg_rpc_data *rpc,
                   void *req, size_t len,
                   void *resp, size_t resp_len);

void rpmsg_set_default_rpc(struct rpmsg_rpc_data *rpc);
 
#if defined __cplusplus
}
#endif
 
#endif /* RPMSG_RETARGET_H */