pm.c

早期freebsd实现

	/*
	 * Initialize the screen.
	 */
	pcc->cmdr = PCC_FOPB | PCC_VBHI;

	/*
	 * Initialize the cursor register.
	 */
	pcc->cmdr = curReg = PCC_ENPA | PCC_ENPB;

	/*
	 * Initialize screen info.
	 */
	fp->fbu->scrInfo.max_row = 56;
	fp->fbu->scrInfo.max_col = 80;
	fp->fbu->scrInfo.max_x = 1024;
	fp->fbu->scrInfo.max_y = 864;
	fp->fbu->scrInfo.max_cur_x = 1023;
	fp->fbu->scrInfo.max_cur_y = 863;
	fp->fbu->scrInfo.version = 11;
	fp->fbu->scrInfo.mthreshold = 4;	
	fp->fbu->scrInfo.mscale = 2;
	fp->fbu->scrInfo.min_cur_x = -15;
	fp->fbu->scrInfo.min_cur_y = -15;
	fp->fbu->scrInfo.qe.timestamp_ms = TO_MS(time);
	fp->fbu->scrInfo.qe.eSize = PM_MAXEVQ;
	fp->fbu->scrInfo.qe.eHead = fp->fbu->scrInfo.qe.eTail = 0;
	fp->fbu->scrInfo.qe.tcSize = MOTION_BUFFER_SIZE;
	fp->fbu->scrInfo.qe.tcNext = 0;

	/*
	 * Initialize the color map, the screen, and the mouse.
	 */
	pmInitColorMap();
	pmScreenInit();
	fbScroll(fp);

	fp->initialized = 1;
	if (cn_tab.cn_fb == (struct pmax_fb *)0)
		cn_tab.cn_fb = fp;
	return (1);
}	

/*
 * ----------------------------------------------------------------------------
 *
 * pmScreenInit --
 *
 *	Initialize the screen.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	The screen is initialized.
 *
 * ----------------------------------------------------------------------------
 */
static void
pmScreenInit()
{
	register struct pmax_fb *fp = &pmfb;

	/*
	 * Home the cursor.
	 * We want an LSI terminal emulation.  We want the graphics
	 * terminal to scroll from the bottom. So start at the bottom.
	 */
	fp->row = 55;
	fp->col = 0;

	/*
	 * Load the cursor with the default values
	 *
	 */
	pmLoadCursor(defCursor);
}

/*
 * ----------------------------------------------------------------------------
 *
 * pmLoadCursor --
 *
 *	Routine to load the cursor Sprite pattern.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	The cursor is loaded into the hardware cursor.
 *
 * ----------------------------------------------------------------------------
 */
static void
pmLoadCursor(cur)
	unsigned short *cur;
{
	register PCCRegs *pcc = (PCCRegs *)MACH_PHYS_TO_UNCACHED(KN01_SYS_PCC);
	register int i;

	curReg |= PCC_LODSA;
	pcc->cmdr = curReg;
	for (i = 0; i < 32; i++) {
		pcc->memory = cur[i];
		MachEmptyWriteBuffer();
	}
	curReg &= ~PCC_LODSA;
	pcc->cmdr = curReg;
}

/*
 * ----------------------------------------------------------------------------
 *
 * pmRestoreCursorColor --
 *
 *	Routine to restore the color of the cursor.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	None.
 *
 * ----------------------------------------------------------------------------
 */
static void
pmRestoreCursorColor()
{
	register VDACRegs *vdac = (VDACRegs *)MACH_PHYS_TO_UNCACHED(KN01_SYS_VDAC);
	register int i;

	vdac->overWA = 0x04;
	MachEmptyWriteBuffer();
	for (i = 0; i < 3; i++) {  
		vdac->over = bg_RGB[i];
		MachEmptyWriteBuffer();
	}

	vdac->overWA = 0x08;
	MachEmptyWriteBuffer();
	vdac->over = 0x00;
	MachEmptyWriteBuffer();
	vdac->over = 0x00;
	MachEmptyWriteBuffer();
	vdac->over = 0x7f;
	MachEmptyWriteBuffer();

	vdac->overWA = 0x0c;
	MachEmptyWriteBuffer();
	for (i = 0; i < 3; i++) {
		vdac->over = fg_RGB[i];
		MachEmptyWriteBuffer();
	}
}

/*
 * ----------------------------------------------------------------------------
 *
 * pmCursorColor --
 *
 *	Set the color of the cursor.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	None.
 *
 * ----------------------------------------------------------------------------
 */
static void
pmCursorColor(color)
	unsigned int color[];
{
	register int i, j;

	for (i = 0; i < 3; i++)
		bg_RGB[i] = (u_char)(color[i] >> 8);

	for (i = 3, j = 0; i < 6; i++, j++)
		fg_RGB[j] = (u_char)(color[i] >> 8);

	pmRestoreCursorColor();
}

/*
 * ----------------------------------------------------------------------------
 *
 * pmInitColorMap --
 *
 *	Initialize the color map.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	The colormap is initialized appropriately whether it is color or 
 *	monochrome.
 *
 * ----------------------------------------------------------------------------
 */
static void
pmInitColorMap()
{
	register VDACRegs *vdac = (VDACRegs *)MACH_PHYS_TO_UNCACHED(KN01_SYS_VDAC);
	struct pmax_fb *fp = &pmfb;
	register int i;

	*(volatile char *)MACH_PHYS_TO_UNCACHED(KN01_PHYS_COLMASK_START) = 0xff;
	MachEmptyWriteBuffer();

	if (fp->isMono) {
		vdac->mapWA = 0; MachEmptyWriteBuffer();
		for (i = 0; i < 256; i++) {
			vdac->map = (i < 128) ? 0x00 : 0xff;
			MachEmptyWriteBuffer();
			vdac->map = (i < 128) ? 0x00 : 0xff;
			MachEmptyWriteBuffer();
			vdac->map = (i < 128) ? 0x00 : 0xff;
			MachEmptyWriteBuffer();
		}
	} else {
		vdac->mapWA = 0; MachEmptyWriteBuffer();
		vdac->map = 0; MachEmptyWriteBuffer();
		vdac->map = 0; MachEmptyWriteBuffer();
		vdac->map = 0; MachEmptyWriteBuffer();

		for (i = 1; i < 256; i++) {
			vdac->map = 0xff; MachEmptyWriteBuffer();
			vdac->map = 0xff; MachEmptyWriteBuffer();
			vdac->map = 0xff; MachEmptyWriteBuffer();
		}
	}

	for (i = 0; i < 3; i++) {
		bg_RGB[i] = 0x00;
		fg_RGB[i] = 0xff;
	}
	pmRestoreCursorColor();
}

/*
 * ----------------------------------------------------------------------------
 *
 * pmVDACInit --
 *
 *	Initialize the VDAC.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	None.
 *
 * ----------------------------------------------------------------------------
 */
static void
pmVDACInit()
{
	register VDACRegs *vdac = (VDACRegs *)MACH_PHYS_TO_UNCACHED(KN01_SYS_VDAC);

	/*
	 *
	 * Initialize the VDAC
	 */
	vdac->overWA = 0x04; MachEmptyWriteBuffer();
	vdac->over = 0x00; MachEmptyWriteBuffer();
	vdac->over = 0x00; MachEmptyWriteBuffer();
	vdac->over = 0x00; MachEmptyWriteBuffer();
	vdac->overWA = 0x08; MachEmptyWriteBuffer();
	vdac->over = 0x00; MachEmptyWriteBuffer();
	vdac->over = 0x00; MachEmptyWriteBuffer();
	vdac->over = 0x7f; MachEmptyWriteBuffer();
	vdac->overWA = 0x0c; MachEmptyWriteBuffer();
	vdac->over = 0xff; MachEmptyWriteBuffer();
	vdac->over = 0xff; MachEmptyWriteBuffer();
	vdac->over = 0xff; MachEmptyWriteBuffer();
}

/*
 * ----------------------------------------------------------------------------
 *
 * pmLoadColorMap --
 *
 *	Load the color map.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	The color map is loaded.
 *
 * ----------------------------------------------------------------------------
 */
static void
pmLoadColorMap(ptr)
	ColorMap *ptr;
{
	register VDACRegs *vdac = (VDACRegs *)MACH_PHYS_TO_UNCACHED(KN01_SYS_VDAC);

	if (ptr->index > 256)
		return;

	vdac->mapWA = ptr->index; MachEmptyWriteBuffer();
	vdac->map = ptr->Entry.red; MachEmptyWriteBuffer();
	vdac->map = ptr->Entry.green; MachEmptyWriteBuffer();
	vdac->map = ptr->Entry.blue; MachEmptyWriteBuffer();
}

/*
 *----------------------------------------------------------------------
 *
 * pmPosCursor --
 *
 *	Postion the cursor.
 *
 * Results:
 *	None.
 *
 * Side effects:
 *	None.
 *
 *----------------------------------------------------------------------
 */
void
pmPosCursor(x, y)
	register int x, y;
{
	register PCCRegs *pcc = (PCCRegs *)MACH_PHYS_TO_UNCACHED(KN01_SYS_PCC);
	register struct pmax_fb *fp = &pmfb;

	if (y < fp->fbu->scrInfo.min_cur_y || y > fp->fbu->scrInfo.max_cur_y)
		y = fp->fbu->scrInfo.max_cur_y;
	if (x < fp->fbu->scrInfo.min_cur_x || x > fp->fbu->scrInfo.max_cur_x)
		x = fp->fbu->scrInfo.max_cur_x;
	fp->fbu->scrInfo.cursor.x = x;		/* keep track of real cursor */
	fp->fbu->scrInfo.cursor.y = y;		/* position, indep. of mouse */
	pcc->xpos = PCC_X_OFFSET + x;
	pcc->ypos = PCC_Y_OFFSET + y;
}

/*
 * pm keyboard and mouse input. Just punt to the generic ones in fb.c
 */
void
pmKbdEvent(ch)
	int ch;
{
	fbKbdEvent(ch, &pmfb);
}

void
pmMouseEvent(newRepPtr)
	MouseReport *newRepPtr;
{
	fbMouseEvent(newRepPtr, &pmfb);
}

void
pmMouseButtons(newRepPtr)
	MouseReport *newRepPtr;
{
	fbMouseButtons(newRepPtr, &pmfb);
}
#endif /* NDC */
#endif /* NPM */