Aquaris-M10-4G/drivers/misc/mediatek/dual_ccci/include/ccmni_pfp.h

/*****************************************************************************
 *
 * Filename:
 * ---------
 *   ccmni_pfp.h
 *
 * Project:
 * --------
 *   YuSu
 *
 * Description:
 * ------------
 *   MT6516 Cross Chip Modem Network Interface - Packet Framing Protocol
 *
 * Author:
 * -------
 *   Stanley Chou (mtk01411)
 *
 ****************************************************************************/
#ifndef __CCCI_CCMNI_PFP_H__
#define __CCCI_CCMNI_PFP_H__
/* Compile Option to decide if DYNAMIC_MULTIPLE_FRAME encode/decode is supported or not */

#define MAX_PDP_CONT_NUM          3
#define PFP_FRAME_START_FLAG      0xF9
#define PFP_FRAME_MAGIC_NUM       0x66
/* MAX_PFP_LEN_FIELD_VALUE is the maximum size of one IP Packet */
#define MAX_PFP_LEN_FIELD_VALUE   1500
#define FREE_RAW_DATA_BUF_SIZE    2048
#define FREE_COOKED_DATA_BUF_SIZE 2048
#define SUPPORT_FRAME_NUM 1
#define SUPPORT_PKT_NUM 1024

enum frame_flag_t {
	FRAME_START = 0,
	FRAME_CONTINUOUS,
	FRAME_END
};

enum unframe_state_t {
	PARSE_PFP_FRAME_START_FLAG_STATE = 0,
	PARSE_PFP_FRAME_MAGIC_NUM_STATE,
	PARSE_PFP_FRAME_LENGTH_FIELD_STATE,
	PARSE_PFP_FRAME_GET_DATA_STATE
};

/* Following implementations are designed for PFP(Packet Frame Protocol) */
struct frame_format_t {
	int frame_size;
	unsigned char *frame_data;
};

struct frame_info_t {
	int num_frames;
	int pending_data_flag;
	int consumed_length;
#ifdef __SUPPORT_DYNAMIC_MULTIPLE_FRAME__
	struct frame_format_t *frame_list;
#else
	struct frame_format_t frame_list[SUPPORT_FRAME_NUM];
#endif
};

struct complete_ippkt_t {
	int pkt_size;
	unsigned char *pkt_data;
#ifndef __SUPPORT_DYNAMIC_MULTIPLE_FRAME__
	int entry_used;
#endif
	struct complete_ippkt_t *next;
};

struct packet_info_t {
	int num_complete_packets;
	int consumed_length;
	int try_decode_again;
	enum unframe_state_t parse_data_state;
	struct complete_ippkt_t *pkt_list;
};

struct ccmni_record_t {
	/* Next expected state to be parsed while entering the pfp_unframe() again */
	enum unframe_state_t unframe_state;
	/* Record the latest parsed Packet length for getting the data */
	int pkt_size;
	/* For fast to find the last node of pkt_list to insert a new parsed IP Pkt into this pkt_list */
	struct complete_ippkt_t *last_pkt_node;
};

extern struct ccmni_record_t ccmni_dev[];

/* The following buffers are used for testing purpose */
/* Store one IP Packet data */
extern unsigned char frame_cooked_data[];
/* Pack the IP Packet into a Frame sent to Modem */
extern unsigned char frame_raw_data[];
extern unsigned char unframe_raw_data[];
extern unsigned char unframe_cooked_data[];

void pfp_reset(int ccmni_inx);
struct frame_info_t pfp_frame(unsigned char *raw_data, unsigned char *cooked_data,
		       int cooked_size, int frame_flag, int ccmni_inx);
struct packet_info_t pfp_unframe(unsigned char *cooked_data, int cooked_data_buf_size,
			  unsigned char *raw_data, int raw_size, int ccmni_inx);
void traverse_pkt_list(struct complete_ippkt_t *node);

#ifndef __SUPPORT_DYNAMIC_MULTIPLE_FRAME__
struct complete_ippkt_t *get_one_available_complete_ippkt_entry(void);
void release_one_used_complete_ippkt_entry(struct complete_ippkt_t *entry);
#endif

#endif				/*  __CCCI_CCMNI_PFP_H__  */