plan 9 kernel history: overview | file list | diff list

1995/0126/pc/devvga.c (diff list | history)

1995/0117/sys/src/9/pc/devvga.c:18,23 – 1995/0126/sys/src/9/pc/devvga.c:18,24 (short | long | prev | next)
1994/0412    
1992/1119    
/* imported */
1994/0413    
extern	Subfont defont0;
1995/0126    
extern Cursor curs;			/* barf */
1992/1119    
 
/* exported */
1994/0413    
Bitmap	gscreen;
1995/0117/sys/src/9/pc/devvga.c:26,32 – 1995/0126/sys/src/9/pc/devvga.c:27,33
1992/1119    
1993/1116    
/* vga screen */ 
static	Lock	screenlock; 
static	ulong	colormap[256][3];
1995/0126    
static	ulong	colormap[Pcolours][3];
1992/1119    
1993/1116    
/* cga screen */ 
static	int	cga = 1;		/* true if in cga mode */
1995/0117/sys/src/9/pc/devvga.c:48,94 – 1995/0126/sys/src/9/pc/devvga.c:49,68
1993/1116    
#define SCREENMEM	(0xA0000 | KZERO) 
#define CGASCREEN	((uchar*)(0xB8000 | KZERO))
1992/0527    
1993/1116    
/*
1992/1119    
 *  definitions of known cards 
 */ 
typedef struct Vgacard	Vgacard; 
struct Vgacard 
{ 
	char	*name;
1993/1116    
	void	(*setpage)(int);	/* routine to page though display memory */
1992/1119    
};
1995/0126    
static void nopage(int);
1992/1119    
1994/1117    
static void	nopage(int); 
static void	cirruspage(int);
1994/1201    
extern void	et4000page(int);
1994/0803    
extern void	s3page(int);
1995/0126    
static Vgac vga = { 
	"vga", 
	nopage,
1993/1116    
1993/0106    
Vgacard vgachips[] =
1992/1119    
{
1994/1103    
	{ "vga", nopage, },
1994/0630    
	{ "clgd542x", cirruspage, },
1994/0909    
	{ "et4000", et4000page, },
1994/1103    
	{ "s3", s3page, },
1994/0630    
	{ 0, 0, },
1992/1119    
}; 
                 
1994/0630    
Vgacard	*vgacard = &vgachips[0];	/* current vga card */
1992/1119    
                 
1994/0624    
extern Hwgc bt485hwgc;
1994/1201    
extern Hwgc et4000hwgc;
1994/0803    
extern Hwgc s3hwgc; 
extern Hwgc tvp3020hwgc;
1994/0624    
                 
static Hwgc *hwcursor[] = { 
	&bt485hwgc,
1994/1201    
	&et4000hwgc,
1994/0803    
	&s3hwgc, 
	&tvp3020hwgc,
1994/0624    
	0, 
};
1994/0803    
Hwgc *hwgc;
1994/0624    
extern Cursor curs;		/* barf */
1995/0126    
static Vgac *vgactlr = &vga;			/* available VGA ctlrs */ 
static Vgac *vgac;				/* current VGA ctlr */ 
static Hwgc *hwgctlr;				/* available HWGC's */ 
Hwgc *hwgc;					/* current HWGC */
1994/0930    
static char interlaced[2];
1994/0624    
1994/0415    
/*
1995/0117/sys/src/9/pc/devvga.c:203,214 – 1995/0126/sys/src/9/pc/devvga.c:177,193
1992/1119    
	char cbuf[64];
1993/1116    
	ushort *sp;
1994/0603    
	ulong *lp;
1995/0126    
	Vgac *vgacp;
1992/0528    
1992/0527    
	switch(c->qid.path&~CHDIR){ 
	case Qdir: 
		return devdirread(c, buf, n, vgadir, Nvga, devgen);
1994/0624    
	case Qvgactl: 
		port = sprint(cbuf, "type: %s\n", vgacard->name);
1995/0126    
		if(vgac == 0) 
			vgacp = &vga; 
		else 
			vgacp = vgac; 
		port = sprint(cbuf, "type: %s\n", vgacp->name);
1994/0930    
		port += sprint(cbuf+port, "size: %dx%dx%d%s\n", 
			gscreen.r.max.x, gscreen.r.max.y, 
			1<<gscreen.ldepth, interlaced);
1995/0117/sys/src/9/pc/devvga.c:253,260 – 1995/0126/sys/src/9/pc/devvga.c:232,241
1994/0624    
static void 
vgactl(char *arg) 
{ 
	int i, x, y, z;
1995/0126    
	int x, y, z;
1994/0624    
	char *cp, *field[3];
1995/0126    
	Hwgc *hwgcp; 
	Vgac *vgacp;
1994/0624    
1995/0117    
	if(getfields(arg, field, 3, " ") != 2)
1994/0624    
		error(Ebadarg);
1995/0117/sys/src/9/pc/devvga.c:269,281 – 1995/0126/sys/src/9/pc/devvga.c:250,262
1994/0624    
			return; 
		} 
 
		for(i = 0; hwcursor[i]; i++){ 
			if(strcmp(field[1], hwcursor[i]->name) == 0){
1995/0126    
		for(hwgcp = hwgctlr; hwgcp; hwgcp = hwgcp->link){ 
			if(strcmp(field[1], hwgcp->name) == 0){
1994/0624    
				if(hwgc) 
					(*hwgc->disable)(); 
				else 
					cursoroff(1); 
				hwgc = hwcursor[i];
1995/0126    
				hwgc = hwgcp;
1994/0624    
				(*hwgc->enable)(); 
				setcursor(&curs); 
				cursoron(1);
1995/0117/sys/src/9/pc/devvga.c:284,292 – 1995/0126/sys/src/9/pc/devvga.c:265,273
1994/0624    
		} 
	} 
	else if(strcmp(field[0], "type") == 0){ 
		for(i = 0; vgachips[i].name; i++){ 
			if(strcmp(field[1], vgachips[i].name) == 0){ 
				vgacard = &vgachips[i];
1995/0126    
		for(vgacp = vgactlr; vgacp; vgacp = vgacp->link){ 
			if(strcmp(field[1], vgacp->name) == 0){ 
				vgac = vgacp;
1994/0624    
				return; 
			} 
		}
1995/0117/sys/src/9/pc/devvga.c:577,597 – 1995/0126/sys/src/9/pc/devvga.c:558,575
1994/1119    
1994/0624    
	vgao(MiscW, vga->misc); 
 
	for(i = 1; i < NSeqx; i++){
1994/0412    
		if(i == 1)
1994/0624    
			continue;
1995/0126    
	for(i = 2; i < sizeof(vga->sequencer); i++)
1994/0624    
		vgaxo(Seqx, i, vga->sequencer[i]); 
	}
1994/1119    
	vgaxo(Seqx, 0x00, seq00);
1994/0412    
1994/0624    
	vgaxo(Crtx, 0x11, vga->crt[0x11] & ~0x80); 
	for(i = 0; i < NCrtx; i++)
1995/0126    
	for(i = 0; i < sizeof(vga->crt); i++)
1994/0624    
		vgaxo(Crtx, i, vga->crt[i]);
1994/0412    
1994/0624    
	for(i = 0; i < NGrax; i++)
1995/0126    
	for(i = 0; i < sizeof(vga->graphics); i++)
1994/0624    
		vgaxo(Grx, i, vga->graphics[i]);
1994/0412    
1994/0624    
	for(i = 0; i < NAttrx; i++)
1995/0126    
	for(i = 0; i < sizeof(vga->attribute); i++)
1994/0624    
		vgaxo(Attrx, i, vga->attribute[i]);
1994/0412    
1994/1119    
	vgaxo(Seqx, 0x01, seq01);
1995/0117/sys/src/9/pc/devvga.c:648,654 – 1995/0126/sys/src/9/pc/devvga.c:626,632
1993/1116    
	gscreen.r.max = Pt(maxx, maxy); 
	gscreen.clipr = gscreen.r;
1994/0412    
	for(i = 0; i < gscreen.width*BY2WD*maxy; i += Footprint){ 
		vgacard->setpage(i>>Footshift);
1995/0126    
		vgac->page(i>>Footshift);
1994/0415    
		memset(gscreen.base, 0xff, Footprint);
1994/0412    
	}
1993/1116    
1995/0117/sys/src/9/pc/devvga.c:685,691 – 1995/0126/sys/src/9/pc/devvga.c:663,669
1994/0416    
	/* default color map (has to be outside the lock) */
1993/1116    
	switch(ldepth){ 
	case 3: 
		for(i = 0; i < 256; i++)
1995/0126    
		for(i = 0; i < Pcolours; i++)
1994/0528    
			setcolor(i, xnto32(i>>5, 3), xnto32(i>>2, 3), xnto32(i, 2));
1994/0507    
		setcolor(0x55, xnto32(0x15, 6), xnto32(0x15, 6), xnto32(0x15, 6)); 
		setcolor(0xaa, xnto32(0x2a, 6), xnto32(0x2a, 6), xnto32(0x2a, 6));
1995/0117/sys/src/9/pc/devvga.c:734,740 – 1995/0126/sys/src/9/pc/devvga.c:712,718
1994/0412    
	diff = 0; 
	if(q >= e){ 
		pg = ++*page; 
		vgacard->setpage(pg);
1995/0126    
		vgac->page(pg);
1994/0412    
		q -= Footprint; 
		diff -= Footprint; 
	}
1995/0117/sys/src/9/pc/devvga.c:755,761 – 1995/0126/sys/src/9/pc/devvga.c:733,739
1994/0412    
	diff = 0; 
	if(q >= e){ 
		pg = ++*page; 
		vgacard->setpage(pg);
1995/0126    
		vgac->page(pg);
1994/0412    
		q -= Footprint; 
		diff -= Footprint; 
	}
1995/0117/sys/src/9/pc/devvga.c:765,771 – 1995/0126/sys/src/9/pc/devvga.c:743,749
1994/0412    
	if(rem < len){ 
		memmove(q, data, rem); 
		pg = ++*page; 
		vgacard->setpage(pg);
1995/0126    
		vgac->page(pg);
1994/0412    
		q -= Footprint; 
		diff -= Footprint; 
		memmove(q+rem, data+rem, len-rem);
1995/0117/sys/src/9/pc/devvga.c:803,809 – 1995/0126/sys/src/9/pc/devvga.c:781,787
1994/0412    
 
	off = q - (uchar*)gscreen.base; 
	page = off>>Footshift; 
	vgacard->setpage(page);
1995/0126    
	vgac->page(page);
1994/0412    
	q = ((uchar*)gscreen.base) + (off&(Footprint-1)); 
 
	sw = gscreen.width*sizeof(ulong);
1995/0117/sys/src/9/pc/devvga.c:890,896 – 1995/0126/sys/src/9/pc/devvga.c:868,874
1994/0412    
	diff = 0; 
	if(q >= e){ 
		pg = ++*page; 
		vgacard->setpage(pg);
1995/0126    
		vgac->page(pg);
1994/0412    
		q -= Footprint; 
		diff -= Footprint; 
	}
1995/0117/sys/src/9/pc/devvga.c:911,917 – 1995/0126/sys/src/9/pc/devvga.c:889,895
1994/0412    
	diff = 0; 
	if(q >= e){ 
		pg = ++*page; 
		vgacard->setpage(pg);
1995/0126    
		vgac->page(pg);
1994/0412    
		q -= Footprint; 
		diff -= Footprint; 
	}
1995/0117/sys/src/9/pc/devvga.c:921,927 – 1995/0126/sys/src/9/pc/devvga.c:899,905
1994/0412    
	if(rem < len){ 
		memmove(data, q, rem); 
		pg = ++*page; 
		vgacard->setpage(pg);
1995/0126    
		vgac->page(pg);
1994/0412    
		q -= Footprint; 
		diff -= Footprint; 
		memmove(data+rem, q+rem, len-rem);
1995/0117/sys/src/9/pc/devvga.c:960,966 – 1995/0126/sys/src/9/pc/devvga.c:938,944
1994/0412    
 
	off = q - (uchar*)gscreen.base; 
	page = off>>Footshift;
1993/1116    
	vgacard->setpage(page);
1995/0126    
	vgac->page(page);
1994/0412    
	q = ((uchar*)gscreen.base) + (off&(Footprint-1)); 
 
	sw = gscreen.width*sizeof(ulong);
1995/0117/sys/src/9/pc/devvga.c:1074,1082 – 1995/0126/sys/src/9/pc/devvga.c:1052,1057
1993/1116    
}
1992/1119    
/*
1994/0507    
 *  expand n bits of color to 32
1992/1119    
 */
1993/1116    
/*
1992/1119    
 *  paging routines for different cards 
 */ 
static void
1995/0117/sys/src/9/pc/devvga.c:1227,1244 – 1995/0126/sys/src/9/pc/devvga.c:1202,1219
1993/1230    
 
	switch(gscreen.ldepth){ 
	default: 
		x = 0xf;
1995/0126    
		x = 0xF;
1993/1230    
		break; 
	case 3: 
		x = 0xff;
1995/0126    
		x = 0xFF;
1993/1230    
		break; 
	} 
	p &= x; 
	p ^= x;
1994/0729    
	lock(&palettelock);
1992/1119    
	*pr = colormap[p][0]; 
	*pg = colormap[p][1]; 
	*pb = colormap[p][2];
1995/0126    
	*pr = colormap[p][Pred]; 
	*pg = colormap[p][Pgreen]; 
	*pb = colormap[p][Pblue];
1994/0729    
	unlock(&palettelock);
1992/1119    
}
1995/0117/sys/src/9/pc/devvga.c:1249,1270 – 1995/0126/sys/src/9/pc/devvga.c:1224,1245
1993/1230    
 
	switch(gscreen.ldepth){ 
	default: 
		x = 0xf;
1995/0126    
		x = 0xF;
1993/1230    
		break; 
	case 3: 
		x = 0xff;
1995/0126    
		x = 0xFF;
1993/1230    
		break; 
	} 
	p &= x; 
	p ^= x;
1994/0729    
	lock(&palettelock);
1992/1119    
	colormap[p][0] = r; 
	colormap[p][1] = g; 
	colormap[p][2] = b;
1994/0624    
	vgao(DACWx, p); 
	vgao(DACData, r>>(32-6)); 
	vgao(DACData, g>>(32-6)); 
	vgao(DACData, b>>(32-6));
1995/0126    
	colormap[p][Pred] = r; 
	colormap[p][Pgreen] = g; 
	colormap[p][Pblue] = b; 
	vgao(PaddrW, p); 
	vgao(Pdata, r>>(32-6)); 
	vgao(Pdata, g>>(32-6)); 
	vgao(Pdata, b>>(32-6));
1994/0729    
	unlock(&palettelock);
1992/1119    
	return ~0;
1994/0414    
}
1995/0117/sys/src/9/pc/devvga.c:1460,1463 – 1995/0126/sys/src/9/pc/devvga.c:1435,1452
1994/0414    
		cursoron(0); 
	cursor.frozen = 0; 
	unlock(&cursor);
1995/0126    
} 
 
void 
addhwgclink(Hwgc *hwgcp) 
{ 
	hwgcp->link = hwgctlr; 
	hwgctlr = hwgcp; 
} 
 
void 
addvgaclink(Vgac *vgacp) 
{ 
	vgacp->link = vgactlr; 
	vgactlr = vgacp;
1992/1119    
}


source code copyright © 1990-2005 Lucent Technologies; see license
Plan 9 distribution
comments to russ cox (rsc@swtch.com)