/* ambaSio.h - ARM AMBA UART header file *//* Copyright 1997 Wind River Systems, Inc. *//*modification history--------------------01b,21feb00,jpd  renamed primecell... symbols to primeCell...01a,10nov99,ajb  Modified from ambaSio.h, version 01b.  Added support for                 enabling interrupts in UART_CR.*/#ifndef __INCprimeCellSioh #define __INCprimeCellSioh #ifdef __cplusplusextern "C" {#endif/* Register description OF ARM AMBA UART */#ifndef _ASMLANGUAGE/* Register offsets from base address */#define	UARTDR		0x00		/* UART data register (R/W) */#define	RXSTAT		0x04		/* Rx data status register (R/O) */#define	UMSEOI		0x04		/* Clr modem status changed int (W/O) */#define	H_UBRLCR	0x08		/* } High middle and low bytes (R/W) */#define	M_UBRLCR	0x0C		/* } of bit rate and line (W/O) */#define	L_UBRLCR	0x10		/* } register (W/O) */#define	UARTCON		0x14		/* control register (R/W) */#define	UARTFLG		0x18		/* FIFO status register (R/O) */#define UARTIIR		0x1C		/* Int identification reg (R/O) */#define UARTICR		0x1C		/* Int clear register (W/O) *//* bit definitions within H_UBRLCR register */#define PARITY_NONE	0x00		/* set no parity */#define ONE_STOP	0x00		/* set one stop bit */#define FIFO_ENABLE	0x10		/* Enable both FIFOs */#define WORD_LEN_5	(0x00 << 5)	/* Set UART word lengths */#define WORD_LEN_6	(0x01 << 5)#define WORD_LEN_7	(0x02 << 5)#define WORD_LEN_8	(0x03 << 5)/* bit definitions within UARTCR register */#define UART_LBE	0x80		/* Loop Back Enable */#define UART_RTIE 	0x40		/* Receive Timeout Int Enable */#define UART_TIE	0x20		/* Transmit Int Enable */#define UART_RIE	0x10		/* Receive Int Enable */#define UART_MSIE	0x08		/* Modem Status Int Enable */#define UART_ENABLE	0x01		/* Enable the UART *//* bit definitions within UARTFR register */#define FLG_UTXFE	(0x01 << 7)	/* UART Tx FIFO Empty */#define FLG_URXFF	(0x01 << 6)	/* UART Rx FIFO Full */#define FLG_UTXFF	(0x01 << 5)	/* UART Tx FIFO Full */#define FLG_URXFE	(0x01 << 4)	/* UART Rx FIFO Empty *//* bit definitions within UARTIIR/ICR register */#define UART_RTIS	0x08		/* Receive Timeout Int Status */#define UART_TIS	0x04		/* Transmit Int Status */#define UART_RIS	0x02		/* Receive Int Status */#define UART_MIS	0x01		/* Modem Int Status */typedef struct AMBA_CHAN    {    /* must be first */    SIO_CHAN	sio;		/* standard SIO_CHAN element */    /* callbacks */    STATUS	(*getTxChar) ();  /* installed Tx callback routine */    STATUS	(*putRcvChar) (); /* installed Rx callback routine */    void *	getTxArg;	/* argument to Tx callback routine */    void *	putRcvArg;	/* argument to Rx callback routine */    UINT32 *	regs;		/* AMBA registers */    UINT8 	levelRx;	/* Rx Interrupt level for this device */    UINT8 	levelTx;	/* Tx Interrupt level for this device */    UINT32	channelMode;	/* such as INT, POLL modes */    int		baudRate;	/* the current baud rate */    UINT32	xtal;		/* UART clock frequency */         } AMBA_CHAN;/* function declarations */extern void primeCellSioInt (AMBA_CHAN *pChan);extern void primeCellSioIntTx (AMBA_CHAN *pChan);extern void primeCellSioIntRx (AMBA_CHAN *pChan);extern void primeCellSioDevInit (AMBA_CHAN *pChan);#endif	/* _ASMLANGUAGE */#ifdef __cplusplus}#endif #endif /* __INCprimeCellSioh */