mpc860.h

MPC860的配置I2C示例代码

/*
 * Definitions of the parameter area RAM.
 * Note that different structures are overlaid
 * at the same offsets for the different modes
 * of operation.
 *
 * History:
 * 12/12/95	lvn	Bundled multiple files from MSIL into this file
 * 6/18/96     saw     Replaced:
 *                        volatile unsigned long	simt_tbscr;
 *	                     volatile unsigned long	simt_rtcsc;
 *	                           With:
 *                        volatile unsigned short	simt_tbscr;
 *                        volatile unsigned char	RESERVED100[0x2];
 *                        volatile unsigned short	simt_rtcsc;
 *                        volatile unsigned char	RESERVED110[0x2];
 * 10/4/96      saw    Filled in PCMCIA section.
 * 11/21/96     saw    Changed address of PIP PBODR to 0xac2 from 0xac0.
 * 12/18/96     saw    Renamed Registers:
 *                        scc_gsmra -> scc_gsmr_l
 *                        scc_gsmrb -> scc_gsmr_h
 *  1/6/97      sgj    Created 860 version from 8xx code standard
 *
 */

/*****************************************************************
	HDLC parameter RAM
*****************************************************************/

struct hdlc_pram {
	/*
	 * SCC parameter RAM
	 */
	unsigned short	rbase;		/* RX BD base address */
	unsigned short	tbase;		/* TX BD base address */
	unsigned char	rfcr;		/* Rx function code */
	unsigned char	tfcr;		/* Tx function code */
	unsigned short	mrblr;		/* Rx buffer length */
	unsigned long	rstate;		/* Rx internal state */
	unsigned long	rptr;		/* Rx internal data pointer */
	unsigned short	rbptr;		/* rb BD Pointer */
	unsigned short	rcount;		/* Rx internal byte count */
	unsigned long	rtemp;		/* Rx temp */
	unsigned long	tstate;		/* Tx internal state */
	unsigned long	tptr;		/* Tx internal data pointer */
	unsigned short	tbptr;		/* Tx BD pointer */
	unsigned short	tcount;		/* Tx byte count */
	unsigned long	ttemp;		/* Tx temp */
	unsigned long	rcrc;		/* temp receive CRC */
	unsigned long	tcrc;		/* temp transmit CRC */

	/*
	 * HDLC specific parameter RAM
	 */
	unsigned char	RESERVED1[4];	/* Reserved area */
	unsigned long	c_mask;		/* CRC constant */
	unsigned long	c_pres;		/* CRC preset */
	unsigned short	disfc;		/* discarded frame counter */
	unsigned short	crcec;		/* CRC error counter */
	unsigned short	abtsc;		/* abort sequence counter */
	unsigned short	nmarc;		/* nonmatching address rx cnt */
	unsigned short	retrc;		/* frame retransmission cnt */
	unsigned short	mflr;		/* maximum frame length reg */
	unsigned short	max_cnt;	/* maximum length counter */
	unsigned short	rfthr;		/* received frames threshold */
	unsigned short	rfcnt;		/* received frames count */
	unsigned short	hmask;		/* user defined frm addr mask */
	unsigned short	haddr1;	/* user defined frm address 1 */
	unsigned short	haddr2;	/* user defined frm address 2 */
	unsigned short	haddr3;	/* user defined frm address 3 */
	unsigned short	haddr4;	/* user defined frm address 4 */
	unsigned short	tmp;	/* temp */
	unsigned short	tmp_mb;	/* temp */
};


/*****************************************************************
	ASYNC HDLC parameter RAM
*****************************************************************/

struct async_hdlc_pram {
	/*
	 * SCC parameter RAM
	 */
	unsigned short	rbase;		/* RX BD base address */
	unsigned short	tbase;		/* TX BD base address */
	unsigned char	rfcr;		/* Rx function code */
	unsigned char	tfcr;		/* Tx function code */
	unsigned short	mrblr;		/* Rx buffer length */
	unsigned long	rstate;		/* Rx internal state */
	unsigned long	rptr;		/* Rx internal data pointer */
	unsigned short	rbptr;		/* rb BD Pointer */
	unsigned short	rcount;		/* Rx internal byte count */
	unsigned long	rtemp;		/* Rx temp */
	unsigned long	tstate;		/* Tx internal state */
	unsigned long	tptr;		/* Tx internal data pointer */
	unsigned short	tbptr;		/* Tx BD pointer */
	unsigned short	tcount;		/* Tx byte count */
	unsigned long	ttemp;		/* Tx temp */
	unsigned long	rcrc;		/* temp receive CRC */
	unsigned long	tcrc;		/* temp transmit CRC */

	/*
	 * ASYNC HDLC specific parameter RAM
	 */
	unsigned char	RESERVED1[4];	/* Reserved area */
	unsigned long	c_mask;		/* CRC constant */
	unsigned long	c_pres;		/* CRC preset */
	unsigned short	bof;		/* begining of flag character */
	unsigned short	eof;		/* end of flag character */
	unsigned short	esc;		/* control escape character */
	unsigned char	RESERVED2[4];	/* Reserved area */
	unsigned short	zero;		/* zero */
	unsigned char	RESERVED3[2];	/* Reserved area */
	unsigned short	rfthr;		/* received frames threshold */
	unsigned char	RESERVED4[4];	/* Reserved area */
	unsigned long	txctl_tbl;	/* Tx ctl char mapping table */
	unsigned long	rxctl_tbl;	/* Rx ctl char mapping table */
	unsigned short	nof;		/* Number of opening flags */
};


/*****************************************************************
	UART parameter RAM
*****************************************************************/

/*
 * bits in uart control characters table
 */
#define	CC_INVALID	0x8000		/* control character is valid */
#define	CC_REJ		0x4000		/* don't store char in buffer */
#define	CC_CHAR		0x00ff		/* control character */

/* UART */
struct uart_pram {
	/*
	 * SCC parameter RAM
	 */
	unsigned short	rbase;		/* RX BD base address */
	unsigned short	tbase;		/* TX BD base address */
	unsigned char	rfcr;		/* Rx function code */
	unsigned char	tfcr;		/* Tx function code */
	unsigned short	mrblr;		/* Rx buffer length */
	unsigned long	rstate;		/* Rx internal state */
	unsigned long	rptr;		/* Rx internal data pointer */
	unsigned short	rbptr;		/* rb BD Pointer */
	unsigned short	rcount;		/* Rx internal byte count */
	unsigned long	rx_temp;	/* Rx temp */
	unsigned long	tstate;		/* Tx internal state */
	unsigned long	tptr;		/* Tx internal data pointer */
	unsigned short	tbptr;		/* Tx BD pointer */
	unsigned short	tcount;		/* Tx byte count */
	unsigned long	ttemp;		/* Tx temp */
	unsigned long	rcrc;		/* temp receive CRC */
	unsigned long	tcrc;		/* temp transmit CRC */

	/*
	 * UART specific parameter RAM
	 */
	unsigned char	RESERVED1[8];	/* Reserved area */
	unsigned short	max_idl;	/* maximum idle characters */
	unsigned short	idlc;		/* rx idle counter (internal) */
	unsigned short	brkcr;		/* break count register */

	unsigned short	parec;		/* Rx parity error counter */
	unsigned short	frmer;		/* Rx framing error counter */
	unsigned short	nosec;		/* Rx noise counter */
	unsigned short	brkec;		/* Rx break character counter */
	unsigned short	brkln;		/* Reaceive break length */

	unsigned short	uaddr1;		/* address character 1 */
	unsigned short	uaddr2;		/* address character 2 */
	unsigned short	rtemp;		/* temp storage */
	unsigned short	toseq;		/* Tx out of sequence char */
	unsigned short	cc[8];		/* Rx control characters */
	unsigned short	rccm;		/* Rx control char mask */
	unsigned short	rccr;		/* Rx control char register */
	unsigned short	rlbc;		/* Receive last break char */
};



/*****************************************************************
	BISYNC parameter RAM
*****************************************************************/

struct bisync_pram {
	/*
	 * SCC parameter RAM
	 */
	unsigned short	rbase;		/* RX BD base address */
	unsigned short	tbase;		/* TX BD base address */
	unsigned char	rfcr;		/* Rx function code */
	unsigned char	tfcr;		/* Tx function code */
	unsigned short	mrblr;		/* Rx buffer length */
	unsigned long	rstate;		/* Rx internal state */
	unsigned long	rptr;		/* Rx internal data pointer */
	unsigned short	rbptr;		/* rb BD Pointer */
	unsigned short	rcount;		/* Rx internal byte count */
	unsigned long	rtemp;		/* Rx temp */
	unsigned long	tstate;		/* Tx internal state */
	unsigned long	tptr;		/* Tx internal data pointer */
	unsigned short	tbptr;		/* Tx BD pointer */
	unsigned short	tcount;		/* Tx byte count */
	unsigned long	ttemp;		/* Tx temp */
	unsigned long	rcrc;		/* temp receive CRC */
	unsigned long	tcrc;		/* temp transmit CRC */

	/*
	 * BISYNC specific parameter RAM
	 */
	unsigned char	RESERVED1[4];	/* Reserved area */
	unsigned long	crcc;		/* CRC Constant Temp Value */
	unsigned short	prcrc;		/* Preset Receiver CRC-16/LRC */
	unsigned short	ptcrc;		/* Preset Transmitter CRC-16/LRC */
	unsigned short	parec;		/* Receive Parity Error Counter */
	unsigned short	bsync;		/* BISYNC SYNC Character */
	unsigned short	bdle;		/* BISYNC DLE Character */
	unsigned short	cc[8];		/* Rx control characters */
	unsigned short	rccm;		/* Receive Control Character Mask */
};

/*****************************************************************
	IOM2 parameter RAM
	(overlaid on tx bd[5] of SCC channel[2])
*****************************************************************/
struct iom2_pram {
	unsigned short	ci_data;	/* ci data */
	unsigned short	monitor_data;	/* monitor data */
	unsigned short	tstate;		/* transmitter state */
	unsigned short	rstate;		/* receiver state */
};

/*****************************************************************
	SPI/SMC parameter RAM
	(overlaid on tx bd[6,7] of SCC channel[2])
*****************************************************************/

#define	SPI_R	0x8000		/* Ready bit in BD */

struct spi_pram {
	unsigned short	rbase;		/* Rx BD Base Address */
	unsigned short	tbase;		/* Tx BD Base Address */
	unsigned char	rfcr;		/* Rx function code */
	unsigned char	tfcr;		/* Tx function code */
	unsigned short	mrblr;		/* Rx buffer length */
	unsigned long	rstate;		/* Rx internal state */
	unsigned long	rptr;		/* Rx internal data pointer */
	unsigned short	rbptr;		/* rb BD Pointer */
	unsigned short	rcount;		/* Rx internal byte count */
	unsigned long	rtemp;		/* Rx temp */
	unsigned long	tstate;		/* Tx internal state */
	unsigned long	tptr;		/* Tx internal data pointer */
	unsigned short	tbptr;		/* Tx BD pointer */
	unsigned short	tcount;		/* Tx byte count */
	unsigned long	ttemp;		/* Tx temp */
};

struct smc_uart_pram {
	unsigned short	rbase;		/* Rx BD Base Address */
	unsigned short	tbase;		/* Tx BD Base Address */
	unsigned char	rfcr;		/* Rx function code */
	unsigned char	tfcr;		/* Tx function code */
	unsigned short	mrblr;		/* Rx buffer length */
	unsigned long	rstate;		/* Rx internal state */
	unsigned long	rptr;		/* Rx internal data pointer */
	unsigned short	rbptr;		/* rb BD Pointer */
	unsigned short	rcount;		/* Rx internal byte count */
	unsigned long	rtemp;		/* Rx temp */
	unsigned long	tstate;		/* Tx internal state */
	unsigned long	tptr;		/* Tx internal data pointer */
	unsigned short	tbptr;		/* Tx BD pointer */
	unsigned short	tcount;		/* Tx byte count */
	unsigned long	ttemp;		/* Tx temp */
	unsigned short	max_idl;	/* Maximum IDLE Characters */
	unsigned short	idlc;		/* Temporary IDLE Counter */