/* 
 * GigaSpaceWire switch driver for MC-30SF6EM-6U evaluation kit
 * 
 * Copyright (c) 2019 Elvees (support@elvees.com)
 * Author: Dmitry Evtushenko
 *
 */

#ifndef __ethospw_h
#define __ethospw_h


#define ETHOSPW_DEV_NAME "ethospw"


typedef struct ethospw_s ethospw_t;


extern int drv_ethospw_init( void);
extern void drv_ethospw_exit( void);


#if 0
struct mc_spw
{
	int				num;
	char				name[ sizeof(ETHOSPW_DEV_NAME) + 1];
	struct net_device *		pdev;
	/*
	struct sk_buff *		pending_tx_skb;
	struct sk_buff *		recent_tx_skb;
	//int				no_restart;
	spw_descriptor_t		tx_desc __attribute__ ((aligned (8)));
	char *				tx_data_buffer;
	spw_descriptor_t *		rx_desc_buffer;
	char *				rx_data_buffer;
	spw_descriptor_t *		cur_rx_desc;
	char *				cur_rx_data;
	dma_params_t			rx_desc_chain [RX_DESC_BUFSZ / sizeof (spw_descriptor_t)] __attribute__ ((aligned (8)));
	dma_params_t			rx_data_chain __attribute__ ((aligned (8)));
	struct timer_list		start_timer;
	unsigned			speed;
	int				just_connected;

	char txbuf [ETH_MTU + ETH_HEADER_SIZE + ETH_CRC_SIZE] __attribute__ ((aligned (8)));
	char rxbuf [RX_DATA_BUFSZ] __attribute__ ((aligned (8)));
	char rxdescbuf [RX_DESC_BUFSZ] __attribute__ ((aligned (8)));
	*/
};
#endif //0


// sk_buff data:
typedef struct skb_dat_s
{
	struct sk_buff *pskb;
	unsigned char *pdata;
	u32  sz_data;
	u32  pos_data;
} skb_dat_t;

extern void skbd_clear( skb_dat_t  *pskbd);
extern int skbd_add_data( skb_dat_t *pskbd, ethospw_t *peos, u32  sz_data, char *pd, u32 len_d);
extern int skbd_send( skb_dat_t *pskbd, ethospw_t *peos);
static inline int skbd_is_ready( skb_dat_t  *pskbd)
 { return ((pskbd->pos_data == pskbd->sz_data) ? 1 : 0); }

// private part of network device data:
struct ethospw_s
{
	unsigned				  num;
	//char				name[ sizeof(ETHOSPW_CARD_NAME) + 1];
	struct net_device  *pdev;

	int is_open; //- 0, 1
	int exit_rx_job; //- 0, 1, 2

	struct task_struct *p_task_rx_job;
	//struct mutex  mtx_rx;
	skb_dat_t  skb;

	u32  cnt_tx_pack;
	u32  cnt_rx_pack;
};

extern void ethospw_init( ethospw_t *peos);


extern int is_init_ethospw;


#endif //!__ethospw_h