/*****************************************
*FileName : zjmdmdrv.h
*Description:Character device drive for zj-modem
*Version:1.0.0
*Author:XieHongwei
*Date:2002-04-26
*****************************************/
#ifndef ZJMDMDRV_H
#define ZJMDMDRV_H

/************ Define port *****************/
#define DATAPORT0	0x210
#define DATAPORT1	0x211
#define DATAPORT2	0x212
#define DATAPORT3	0x213
#define DATAPORT4	0x214
#define DATAPORT5	0x215
#define DATAPORT6	0x216
#define DATAPORT7	0x217

#define STATPORT0	0x218
#define STATPORT1	0x219
#define STATPORT2	0x21A
#define STATPORT3	0x21B
#define STATPORT4	0x21C
#define STATPORT5	0x21D
#define STATPORT6	0x21E
#define STATPORT7	0x21F

#define IOPORTBASE	DATAPORT0
#define PORT_RANGE	16

/************ Modem protocol cmd ****************/
#define	CMD_CONNECT		0xc1	//建立連接
#define	CMD_DISCONN		0xc2	//掛機
#define	CMD_CALLOUT		0xc3	//撥號
#define	CMD_CONN_SUCCESS	0xc4	//連接成功
#define	CMD_CONN_BUSY		0xc5	//占線
#define	CMD_CONN_FAIL		0xc6	//連接失敗
#define	CMD_OPEN_CHL		0xc7	//開啟通道
#define	CMD_SHUT_CHL		0xc8	//關閉通道
#define	CMD_DETECT		0x55	//上電自檢
#define	CMD_FEEDBACK		0xaa	//反饋自檢結果
#define	CMD_QUERY_STATE	0xbb	//查詢狀態
#define	CMD_HANGUP_BACK	0xd0	//返回查詢的狀態:掛機
#define	CMD_BRINGUP_BACK	0xd1	//返回查詢的狀態:摘機
#define	CMD_REVOVER_HEAD	0x39	//糾正頭錯誤(僅driver支持)

/************ define the ioctl cmd **********/
#define IOCTL_CMD_SHUTCH			0x6b00
#define IOCTL_CMD_OPENCH			0x6b01
#define IOCTL_CMD_DISCONN			0x6b02
#define IOCTL_CMD_MAKECALL			0x6b03
#define IOCTL_CMD_GETSTAT			0x6b04
#define IOCTL_CMD_IsWriteOver		0x6b05
#define IOCTL_CMD_CmdSendOver		0x6b06
#define IOCTL_CMD_GetRdableCH		0x6b07
#define IOCTL_CMD_CORRECTTIME		0x6b08	//糾正系統時間
#define IOCTL_CMD_RESETCH			0x6b09
#define IOCTL_CMD_CARD_USABLE		0x6b0a
#define IOCTL_CMD_QUERY_STATE		0x6b0b
#define IOCTL_CMD_GetQueryResult	0x6b0c	//得到查詢結果
#define IOCTL_CMD_RecoverHead		0x6b0d

/******************** buffer state ***************/
#define NORMAL	0
#define EMPTY	-1
#define FULL		-2

/************ Error code define **************/
#define	NO_ERROR		0
#define	E_COMMON			-1	/*普通錯誤*/
#define	E_ACCESS_MEMORY	-2;	/*訪問內存失敗*/
#define	E_NONE_CARD		-3	/*卡不可用*/
#define	E_SEND_FAIL		-4	/*發送數據失敗 */
#define	E_RECV_FAIL		-5	/*接收數據失敗*/
#define	E_SEND_CMD_FAIL	-6	/*發送命令給modem時失敗*/


/************ Macro perennial define **********/
#define TRUE					1
#define FALSE				0

#define DEVICE_NAME			 "zjmdmdrv"
#define MAJOR				0
#define IRQ_NO				5
#define MDM_NUM			8
#define CHL_NUM				4
#define MAX_BUFF_SIZE		4000
#define MAX_CMDBUF_SIZE	128
#define MAX_DETECT_TIMES	4
#define OPT_CARD_NUM_ONE_IRQ	8	/*一次中斷處理幾塊卡*/

#define INVALID_MDMNO		0x22	/*無效的modem號*/
#define INVALID_CHLNO		INVALID_MDMNO
#define INVALID_STATE		0x33	/*無效的連接狀態*/
#define MAX_FULL_TIMES		1000	//d 100000



/********* Globe perennial *****************/
const int DataPort[] = 
{
	DATAPORT0,DATAPORT1,DATAPORT2,DATAPORT3,
	DATAPORT4,DATAPORT5,DATAPORT6,DATAPORT7,0
};
const int StatePort[] =
{
	STATPORT0,STATPORT1,STATPORT2,STATPORT3,
	STATPORT4,STATPORT5,STATPORT6,STATPORT7,0
};

/******** myself date type *****************/
#define BOOL int
#define ERRNO int

struct ChannelDesc
{
	u8 mdm_no;
	u8 chl_no;
	BOOL be_open;				//是否已經開啟
	BOOL connect;				//是否建立連接
	char connect_state;			//通道連接狀態
	char hangup_state;			//掛機狀態
	/* 各個通道有獨立的讀緩沖*/
	char read_buf[MAX_BUFF_SIZE];
	u32 rbuf_readpos;
	u32 rbuf_writepos;
	u32 readable_len;			//本通道已經從卡收收到數據的長度
	u64	rbuf_max_full_times;	//讀緩沖最多能滿的次數，超過指定的值就自動清空
	/* 各個通道有獨立的寫緩沖*/
	char write_buf[MAX_BUFF_SIZE];
	u32 wbuf_readpos;
	u32 wbuf_writepos;
	u32 writeable_len;			//可以發送的數據長度
	u16 wbytes_once;			//一次發送的字節數
	u16 pause_time;				//暫停時間(毫秒)
	u16 wbytes_after_pause;		//暫停后發送的字節數
	BOOL wtimer_started;		//寫數據的定時器是否開啟
	u64 wtimer_start_time;		//定時器啟動時間
	wait_queue_head_t wait_queue_r;	//讀等待隊列
	wait_queue_head_t wait_queue_w;	//寫等待隊列
	u64	wbuf_max_full_times;		//寫緩沖最多能滿的次數，超過指定的值就自動清空
};

struct MdmDesc
{
	u8 mdm_no;
	unsigned int f_flags;		//文件打開標志
	atomic_t writed_head;		//剛寫完數據頭
	BOOL	writed_head_flag;	//寫數據頭標志
	atomic_t expect_read_head;	//希望讀到數據頭,為FALSE時表示希望讀到數據
	atomic_t is_data_head;		//最后一次讀到的頭是數據頭,非狀態頭
	char head_at_last;		//最后一次讀到的頭保存在此
	u8 next_write_chl_id;	//下一次要發送的通道號
	/*命令數據緩沖*/
	char cmd_buf[MAX_CMDBUF_SIZE];
	u32 cbuf_readpos;
	u32 cbuf_writepos;
	u32 cmdable_len;		//可以發送的命令長度
	wait_queue_head_t wait_queue_cmd;	//等待命令發完的等待隊列
	struct semaphore cmd_sending_sem;	//發送命令的信號量
	struct ChannelDesc ch_desc[CHL_NUM];
};

/*********** Globe variable ***************/
static int Major;
u8 g_MdmNum;	//可用modem數目
u8 g_MdmNO[MDM_NUM];	//依次記錄可用modem卡的編號
u8 g_CurReadCardCount;	//當前讀操作的卡號計數
u8 g_CurWriteCardCount;	//當前寫操作的卡號計數

struct MdmDesc *gp_MdmDesc[MDM_NUM];
char *gp_mdm_res;
#ifdef _DEBUG
	u64 amount_recv_bytes,amount_send_bytes,no_read_data,
		max_no_read_data,rbuf_full_times;
	BOOL recv_first_data,head_err;
#endif

void TastletRoutine(unsigned long arg);

#endif