drivers/misc/mediatek/eccci/port_ipc.h

#ifndef __PORT_IPC_H__
#define __PORT_IPC_H__

#include <linux/wait.h>
#include "ccci_core.h"

#define MAX_NUM_IPC_TASKS 10
#define CCCI_TASK_PENDING 0x01
#define IPC_MSGSVC_RVC_DONE 0x12344321
#define CCCI_IPC_MINOR_BASE 100

struct ccci_ipc_ctrl {
	unsigned char task_id;
	unsigned char md_is_ready;
	unsigned long flag;
	wait_queue_head_t tx_wq;
	wait_queue_head_t md_rdy_wq;
	struct ccci_port *port;
};

/* IPC MD/AP id map table */
struct ipc_task_id_map {
	u32 extq_id;		/* IPC universal mapping external queue */
	u32 task_id;		/* IPC processor internal task id */
} __attribute__ ((packed));

typedef struct local_para {
	u8 ref_count;
	u16 msg_len;
	u8 data[0];
} __attribute__ ((packed)) local_para_struct;

typedef struct peer_buff {
	u16 pdu_len;
	u8 ref_count;
	u8 pb_resvered;
	u16 free_header_space;
	u16 free_tail_space;
	u8 data[0];
} __attribute__ ((packed)) peer_buff_struct;

typedef struct {
	u32 src_mod_id;
	u32 dest_mod_id;
	u32 sap_id;
	u32 msg_id;
	struct local_para *local_para_ptr;
	struct peer_buff *peer_buff_ptr;
} ipc_ilm_t;			/* for conn_md */

struct ccci_ipc_ilm {
	u32 src_mod_id;
	u32 dest_mod_id;
	u32 sap_id;
	u32 msg_id;
	u32 local_para_ptr;
	u32 peer_buff_ptr;
} __attribute__ ((packed));	/* for MD */

/* MD <-> AP Msg_id mapping enum */
typedef enum {
	IPC_L4C_MSG_ID_BEGIN = 0x80000000,
	IPC_L4C_MSG_ID_RANGE = 0x80,
	IPC_EL1_MSG_ID_BEGIN = IPC_L4C_MSG_ID_BEGIN + IPC_L4C_MSG_ID_RANGE,
	IPC_EL1_MSG_ID_RANGE = 0x20,
} CCCI_IPC_MSG_ID_RANGE;

typedef enum {
	IPC_L4C_MSG_ID_INVALID = IPC_L4C_MSG_ID_BEGIN,
	IPC_L4C_MSG_ID_END,
	IPC_EL1_MSG_ID_INVALID = IPC_EL1_MSG_ID_BEGIN,
#include "ccci_ipc_el1_msg_id.h"
	IPC_EL1_MSG_ID_END,
} CCCI_IPC_MSG_ID_CODE;

int port_ipc_init(struct ccci_port *port);
int port_ipc_req_match(struct ccci_port *port, struct ccci_request *req);
int port_ipc_tx_wait(struct ccci_port *port);
int port_ipc_rx_ack(struct ccci_port *port);
int port_ipc_ioctl(struct ccci_port *port, unsigned int cmd, unsigned long arg);
int port_ipc_md_state_notice(struct ccci_port *port, MD_STATE state);
int port_ipc_write_check_id(struct ccci_port *port, struct ccci_request *req);
unsigned int port_ipc_poll(struct file *fp, struct poll_table_struct *poll);
void port_ipc_kernel_read(struct ccci_port *port);

#endif				/* __PORT_IPC_H__ */