fguser.h

<B>Digital的Unix操作系统VAX 4.2源码</B>

#define GET_X(event)	  ((event)->vse_x)  	     /* get x position */
#define GET_Y(event)	  ((event)->vse_y)  	     /* get y position */
#define GET_TIME(event)	  ((event)->vse_time) 	     /* get time */
#define GET_TYPE(event)	  ((event)->vse_type)	     /* get entry type */
#define GET_KEY(event)	  ((event)->vse_key)  	     /* get keycode */
#define GET_DIR(event)	  ((event)->vse_direction)     /* get direction */
#define GET_DEVICE(event) ((event)->vse_device)        /* get device */

#define GETEND(eq)        (++(eq)->header.head >= (eq)->header.size ? \
			   (eq)->header.head = 0 : 0 )

/*
 * macros to be used by the event queue loader
 */

/* ISFULL yields TRUE if queue is full */

#define ISFULL(eq)	((eq)->header.tail+1 == (eq)->header.head ||   \
			 ((eq)->header.tail+1 == (eq)->header.size &&  \
			  (eq)->header.head == 0))

/* get address of the billet for NEXT event */

#define PUTBEGIN(eq)	(&(eq)->header.events[(eq)->header.tail])

#define PUT_X(event, value)  	((event)->vse_x = value)    /* put X pos */
#define PUT_Y(event, value)   	((event)->vse_y = value)    /* put Y pos */
#define PUT_TIME(event, value)	((event)->vse_time = value)   /* put time */
#define PUT_TYPE(event, value)	((event)->vse_type = value) /* put type */
#define PUT_KEY(event, value)	((event)->vse_key = value) /* put input key */
#define PUT_DIR(event, value)	((event)->vse_direction = value) /* put dir */
#define PUT_DEVICE(event, value) ((event)->vse_device = value)   /* put dev */

#define PUTEND(eq)     (++(eq)->header.tail >= (eq)->header.size ?  \
			(eq)->header.tail = 0 : 0) 

/******************************************************************
 *
 *	DMA I/O DEFINITIONS
 *
 ******************************************************************/

/*
 * The DMA request queue is implemented as a ring buffer of "DMAreq"
 * structures.  The queue is accessed using ring indices located in the
 * "DMAreq_header" structure.  Access is implemented using access macros
 * similar to the event queue access macros above.
 */

	struct FIFOreq {

	    short FIFOtype;		/* FIFO type code */
	    char  *bufp;		/* virtual adrs of buffer */
	    int   length;	        /* transfer buffer length */
	};

	struct DMAreq {

	    short DMAtype;		/* DMA type code (for VAXstar) */
	    short DMAdone;		/* DMA done parameter */
	    char  *bufp;		/* virtual adrs of buffer */
	    int   length;	        /* transfer buffer length */
	};

/* DMA type command codes */

#define DISPLIST	1	/* display list DMA */
#define PTOB		2	/* 1 plane Qbus to bitmap DMA */
#define BTOP		3	/* 1 plane bitmap to Qbus DMA */

/* DMA done notification code */

#define FIFO_EMPTY	0x01	/* DONE when FIFO becomes empty */
#define COUNT_ZERO	0x02	/* DONE when count becomes zero */
#define WORD_PACK	0x04    /* program the gate array for word packing */
#define BYTE_PACK	0x08	/* program gate array for byte packing */
#define REQUEST_DONE	0x100	/* clear when driver has processed request */
#define HARD_ERROR	0x200   /* DMA hardware error occurred */

/* DMA request queue is a ring buffer of request structures */

	struct FIFOreq_header {

	    short status;	    /* master FIFO status word */
	    int shared_size;	    /* size of shared memory in bytes */
	    struct FIFOreq *FIFOreq;  /* start address of request queue */
	    int used;		    /* # of queue entries currently used */
	    int size;		    /* # of "FIFOreq"'s in the request queue */
	    int oldest;		    /* index to oldest queue'd request */
	    int newest;		    /* index to newest queue'd request */
	};

	struct DMAreq_header {

	    int QBAreg;		    /* cookie Qbus map reg for this buffer */
	    short status;	    /* master DMA status word */
	    int shared_size;	    /* size of shared memory in bytes */
	    struct DMAreq *DMAreq;  /* start address of request queue */
	    int used;		    /* # of queue entries currently used */
	    int size;		    /* # of "DMAreq"'s in the request queue */
	    int oldest;		    /* index to oldest queue'd request */
	    int newest;		    /* index to newest queue'd request */
	};

/* bit definitions for DMAstatus word in DMAreq_header */

#define	DMA_ACTIVE	0x0004		/* DMA in progress */
#define DMA_ERROR	0x0080		/* DMA hardware error */
#define DMA_IGNORE	0x0002		/* flag to ignore this interrupt */

/*
 * macros for DMA request queue fiddling
 */

	/* DMA status set/check macros */

#define DMA_SETACTIVE(header)   ((header)->status |= DMA_ACTIVE)
#define DMA_CLRACTIVE(header)	((header)->status &= ~DMA_ACTIVE)
#define DMA_ISACTIVE(header)    ((header)->status & DMA_ACTIVE)

#define DMA_SETERROR(header)    ((header)->status |= DMA_ERROR)
#define DMA_CLRERROR(header)    ((header)->status &= ~DMA_ERROR)
#define DMA_ISERROR(header)     ((header)->status & DMA_ERROR)

#define DMA_SETIGNORE(header)	((header)->status |= DMA_IGNORE)
#define DMA_CLRIGNORE(header)   ((header)->status &= ~DMA_IGNORE)
#define DMA_ISIGNORE(header)    ((header)->status & DMA_IGNORE)

/* yields TRUE if queue is empty (ISEMPTY) or full (ISFULL) */

#define DMA_ISEMPTY(header)	((header)->used == 0)
#define DMA_ISFULL(header)	((header)->used >= (header)->size)

/* returns address of the billet for next (PUT)
 * or oldest (GET) request
 */

#define FIFO_PUTBEGIN(header)	(&(header)->FIFOreq[(header)->newest])
#define FIFO_GETBEGIN(header)  	(&(header)->FIFOreq[(header)->oldest])

#define DMA_PUTBEGIN(header)	(&(header)->DMAreq[(header)->newest])
#define DMA_GETBEGIN(header)  	(&(header)->DMAreq[(header)->oldest])

/* does queue access pointer maintenance */

#define DMA_GETEND(header)      (++(header)->oldest >= (header)->size    \
				  ? (header)->oldest = 0 : 0);		 \
				--(header)->used;

#define DMA_PUTEND(header)     	(++(header)->newest >= (header)->size    \
				  ? (header)->newest = 0 : 0);		 \
				++(header)->used;

/******************************************************************
 *
 *	COLOR MAP WRITE BUFFER DEFINITIONS
 *
 ******************************************************************/

	struct rgb {

	    unsigned char offset;	/* color map address for load */
	    unsigned char red;		/* data for red map */
	    unsigned char green;	/* data for green map */
	    unsigned char blue;		/* data for blue map */
	};

	struct color_buf {

	    char status;		/* load request/service status */
	    short count;		/* number of entries to br loaded */
	    struct rgb rgb[16];
	};

#define LOAD_COLOR_MAP	0x0001

/******************************************************************
 *
 *	SCROLL ASSIST DEFINITIONS
 *
 ******************************************************************/

	struct scroll {

	    short status;
	    short viper_constant;
	    short y_scroll_constant;
	    short y_offset;
	    short x_index_pending;
	    short y_index_pending;
	};

#define LOAD_REGS	0x0001
#define LOAD_INDEX	0x0002

/******************************************************************
 *
 *	MOUSE/TABLET/KBD PROGRAMMING DEFINITIONS
 *
 ******************************************************************/

/*
 * LK201 programmming definitions
 */

#define LK_UPDOWN 	0x86		/* bits for setting lk201 modes */
#define LK_AUTODOWN 	0x82
#define LK_DOWN 	0x80
#define LK_DEFAULTS 	0xD3		/* reset (some) default settings */
#define LK_AR_ENABLE 	0xE3		/* global auto repeat enable */
#define LK_CL_ENABLE 	0x1B		/* keyclick enable */
#define LK_KBD_ENABLE 	0x8B		/* keyboard enable */
#define LK_BELL_ENABLE 	0x23		/* the bell */
#define LK_RING_BELL 	0xA7		/* ring keyboard bell */

#define LK_LED_ENABLE 	0x13		/* light led */
#define LK_LED_DISABLE 	0x11		/* turn off led */
#define LED_1 		0x81		/* led bits */
#define LED_2 		0x82
#define LED_3 		0x84
#define LED_4 		0x88
#define LED_ALL 	0x8F
#define LK_LED_HOLD	LED_4
#define LK_LED_LOCK	LED_3
#define LK_LED_COMPOSE	LED_2
#define LK_LED_WAIT 	LED_1

#define LK_KDOWN_ERROR	0x3D		/* key down on powerup error */
#define LK_POWER_ERROR 	0x3E		/* keyboard failure on powerup test */
#define LK_OUTPUT_ERROR	0xB5		/* keystrokes lost during inhibit */
#define LK_INPUT_ERROR 	0xB6		/* garbage command to keyboard */
#define LK_LOWEST	0x56		/* lowest significant keycode */
#define LK_DIV6_START	0xAD		/* start of div 6 */
#define LK_DIV5_END	0xB2		/* end of div 5 */

#define LAST_PARAM	0x80		/* "no more params" bit */

	struct prgkbd {

	    short cmd;			/* LK201 command opcode */
	    short param1;		/* 1st cmd parameter (can be null) */
	    short param2;		/* 2nd cmd parameter (can be null) */
	};

/*
 * "special" LK-201 keys
 */

#define SHIFT		174
#define LOCK		176
#define REPEAT		180
#define CNTRL		175
#define ALLUP		179
#define HOLD		 86

/*
 * cursor programming structure
 */

	struct prg_cursor {

	    unsigned short acc_factor;	/* cursor aceleration factor */
	    unsigned short threshold;	/* threshold to trigger acc at */
	};

/*
 * mouse definitions
 */

#define INCREMENTAL	'R'		/* stream mode reports (55 hz) */
#define PROMPT_MODE	'D'		/* report when prompted */
#define REQUEST_POS	'P'		/* request position report */
#define SELF_TEST	'T'		/* request self test */

#define MOUSE_ID	0x2		/* mouse ID in lo 4 bits */

#define START_FRAME	0x80		/* start of report frame bit */
#define X_SIGN		0x10		/* position sign bits */
#define Y_SIGN		0x08

#define RIGHT_BUTTON	0x01		/* mouse buttons */
#define MIDDLE_BUTTON	0x02
#define LEFT_BUTTON	0x04

/* mouse report structure definition */

	struct mouse_report {

	    char state;		/* buttons and sign bits */
	    short dx;		/* delta X since last change */
	    short dy;		/* delta Y since last change */
	    char bytcnt;	/* mouse report byte count */
	};

/*
 * tablet command/interface definitions
 */

#define T_STREAM	'R'		/* continuous stream report mode */
#define T_POINT	 	'D'		/* enter report-on-request mode */
#define T_REQUEST	'P'		/* request position report */

#define T_BAUD		'B'		/* increase baud to 9600 from 4800 */
#define T_RATE_55	'K'		/* report rate: 55/sec */
#define T_RATE_72	'L'		/* report rate: 72/sec */
#define T_RATE_120	'M'		/* report rate: 120/sec (9600 only) */

#define T_TEST		SELF_TEST	/* do self test */

#define TABLET_ID	0x4		/* tablet ID in lo 4 bits */

#define T_START_FRAME	0x80		/* start of report frame bit */
#define T_PROXIMITY	0x01		/* state pointer in proximity */

#define T_LEFT_BUTTON	0x02		/* puck buttons */
#define T_FRONT_BUTTON	0x04
#define T_RIGHT_BUTTON	0x08
#define T_BACK_BUTTON	0x10

#define T_BARREL_BUTTON T_LEFT_BUTTON		/* stylus buttons */
#define T_TIP_BUTTON	T_FRONT_BUTTON