1996/0418/pc/devvga.c (diff list | history)

1996/0315/sys/src/9/pc/devvga.c:158,166 – 1996/0418/sys/src/9/pc/devvga.c:158,165 (short | long | prev | next)
1992/0527		} void vgaclose(Chan *c)
1996/0418		vgaclose(Chan*)
1992/0527		{
1992/0711		USED(c);
1992/0527		}
1994/0624		static int
1996/0315/sys/src/9/pc/devvga.c:241,246 – 1996/0418/sys/src/9/pc/devvga.c:240,246
1995/0406		char *cp, *field[4];
1995/0126		Hwgc *hwgcp; Vgac *vgacp;
1996/0418		ulong mem, size, align;
1994/0624
1996/0315		n = parsefields(arg, field, 4, " ");
1995/0406		if(n < 2)
1996/0315/sys/src/9/pc/devvga.c:322,341 – 1996/0418/sys/src/9/pc/devvga.c:322,341
1995/0406		else if(strcmp(field[0], "linear") == 0){ if(n < 2) error(Ebadarg); x = strtoul(field[1], 0, 0);
1996/0418		size = strtoul(field[1], 0, 0);
1995/0406		if(n < 3) y = 0;
1996/0418		align = 0;
1995/0406		else y = strtoul(field[2], 0, 0);
1996/0418		align = strtoul(field[2], 0, 0);
1994/0624
1995/0406		/* see if it fits in the usual place */
1995/0407		if(x <= Footprint){
1996/0418		if(size <= Footprint){
1995/0406		screenmem = SCREENMEM;
1995/0407		if(x == 0){
1996/0418		if(size == 0){
1995/0406		footprint = Footprint;
1995/0407		footshift = Footshift; } else {
1995/0406		footprint = x;
1996/0418		footprint = size;
1995/0407		for(n = 0; n < 31; n++) if((1<<n) >= footprint) break;
1996/0315/sys/src/9/pc/devvga.c:346,353 – 1996/0418/sys/src/9/pc/devvga.c:346,353
1995/0406		} /* grab new space */ if(y == 0){ if(footprint >= x)
1996/0418		if(align == 0){ if(footprint >= size)
1995/0406		return; } else { int s, e;
1996/0315/sys/src/9/pc/devvga.c:354,369 – 1996/0418/sys/src/9/pc/devvga.c:354,374
1995/0406		s = screenmem & ~KZERO; e = s + footprint; s = ROUND(s, y);
1995/0624		if(e >= s + x)
1996/0418		s = ROUND(s, align); if(e >= s + size)
1995/0406		return; } y = getspace(x, y); if(y == 0)
1996/0418		mem = 0; if(vgac->linear) (*vgac->linear)(&mem, &size, &align); else mem = getspace(size, align); if(mem == 0)
1995/0406		error("not enough free address space"); screenmem = y; gscreen.base = (void*)y; footprint = x;
1996/0418		screenmem = mem; gscreen.base = (void*)screenmem; footprint = size;
1995/0407		for(n = 0; n < 31; n++) if((1<<n) >= footprint) break;
1996/0315/sys/src/9/pc/devvga.c:431,446 – 1996/0418/sys/src/9/pc/devvga.c:436,449
1992/0527		} void vgaremove(Chan *c)
1996/0418		vgaremove(Chan*)
1992/0527		{
1992/0711		USED(c);
1992/0527		error(Eperm); } void vgawstat(Chan *c, char *dp)
1996/0418		vgawstat(Chan*, char*)
1992/0527		{
1992/0711		USED(c, dp);
1992/0527		error(Eperm); }
1992/1119
1996/0315/sys/src/9/pc/devvga.c:1011,1019 – 1996/0418/sys/src/9/pc/devvga.c:1014,1021
1993/1116		}
1992/1119		static void nopage(int page)
1996/0418		nopage(int)
1992/1119		{ USED(page); }
1995/1227		static int pos;