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fdvar.h revision 1.1 
      1 #define	FDC_BSIZE	512
      2 #define	FDC_MAXIOSIZE	NBPG	/* XXX should be MAXBSIZE */
      3 
      4 #define FDC_NSTATUS	10
      5 
      6 #if !defined(LOCORE)
      7 struct fdcio {
      8 	/*
      9 	 * 82072 (sun4c) and 82077 (sun4m) controllers have different
     10 	 * register layout; so we cache some here.
     11 	 */
     12 	volatile u_int8_t	*fdcio_reg_msr;
     13 	volatile u_int8_t	*fdcio_reg_fifo;
     14 	volatile u_int8_t	*fdcio_reg_dor;	/* 82077 only */
     15 
     16 	/*
     17 	 * Interrupt state.
     18 	 */
     19 	int	fdcio_istate;
     20 
     21 	/*
     22 	 * IO state.
     23 	 */
     24 	char	*fdcio_data;		/* pseudo-dma data */
     25 	int	fdcio_tc;		/* pseudo-dma Terminal Count */
     26 	u_char	fdcio_status[FDC_NSTATUS];	/* copy of registers */
     27 	int	fdcio_nstat;		/* # of valid status bytes */
     28 };
     29 #endif /* LOCORE */
     30 
     31 /* istate values */
     32 #define ISTATE_IDLE		0	/* No HW interrupt expected */
     33 #define ISTATE_SPURIOUS		1	/* Spurious HW interrupt detected */
     34 #define ISTATE_SENSEI		2	/* Do SENSEI on next HW interrupt */
     35 #define ISTATE_DMA		3	/* Pseudo-DMA in progress */
     36 
     37 #define FDIOCEJECT	_IO('f', 24)
     38 
     39