#ifndef __MSGBOX_SX_H
#define __MSGBOX_SX_H

#include "hal_msgbox.h"
#include "errno.h"
#include <stdint.h>

enum msgbox_direction {
	MSGBOX_DIRECTION_DSP,
	MSGBOX_DIRECTION_CPU,
};

enum msgbox_channel_direction {
	MSGBOX_CHANNEL_RECEIVE,
	MSGBOX_CHANNEL_SEND,
};


struct messagebox;

struct msg_channel {
	struct messagebox *mb;
	enum msgbox_channel_direction dir;
	void *data;
	unsigned char *send;
	int len;
	int idx;
	int (*cb_of_msg_queue)(int queue, void *data);
	int (*cb_tx_done)(unsigned long d, void *data);
	int (*cb_rx)(unsigned long d, void *data);
	int channel;
};

/**
 * @base: messagebox base address
 * @this_user: the messagebox user
 */
struct messagebox {
	unsigned long base;
	int this_user;

	int (*channel_set_direction)(struct messagebox *, int channel,
				      enum msgbox_channel_direction dir);

	int (*channel_irq_set)(struct messagebox *, int channel, int enable);

	int (*channel_read)(struct messagebox *, int channel,
			    unsigned long *read);
	int (*channel_write)(struct messagebox *, int channel,
			     unsigned long write);
	int (*channel_fifo_len)(struct messagebox *, int channel);

	struct msg_channel msg_handler[0];
};

extern struct messagebox *msgbox_dsp;
extern struct messagebox *msgbox_cpu;

int messagebox_init_sx(void);

struct msg_channel *msgbox_alloc_channel_sx(struct messagebox *mb, int channel,
					 enum msgbox_channel_direction dir,
					 int (*func)(unsigned long, void *),
					 void *data);

void msgbox_free_channel_sx(struct messagebox *mb, struct msg_channel *ch);

int msgbox_channel_send_data_sx(struct msg_channel *ch, unsigned char *d,
			     size_t len);


#define MSGBOX_CHANNEL_DEPTH 	8
#define MSGBOX_MAX_QUEUE 	8
#define MSGBOX_MAX_USER  	2

int msg_ops_init_sx(struct messagebox *mb);
int msg_irq_handler_sx(int i, void *mb);

#endif /* __MSGBOX_SX_H */