shithub: riscv

Info  •  Files  •  Log  •  Branches

devvga: removing #v/vgabios, use /dev/realmodemem instead

--- a/sys/man/3/vga

+++ b/sys/man/3/vga

@@ -5,7 +5,6 @@

 .nf

 .B bind #v /dev

-.B /dev/vgabios

 .B /dev/vgactl

 .B /dev/vgaovl

 .B /dev/vgaovlctl

@@ -22,10 +21,6 @@

 it is used to implement configuration and setup of VGA controller cards.

 This is usually performed by

 .IR vga (8).

-.PP

-.B Vgabios

-provides read-only access to the low 640kB of memory,

-where the VGA and other BIOS ROMs are located.

 .PP

 Writing strings to 

 .B vgactl

--- a/sys/src/9/pc/devvga.c

+++ b/sys/src/9/pc/devvga.c

@@ -17,7 +17,6 @@

 enum {

 	Qdir,

-	Qvgabios,

 	Qvgactl,

 	Qvgaovl,

 	Qvgaovlctl,

@@ -25,7 +24,6 @@

 static Dirtab vgadir[] = {

 	".",	{ Qdir, 0, QTDIR },		0,	0550,

-	"vgabios",	{ Qvgabios, 0 },	0x100000, 0440,

 	"vgactl",		{ Qvgactl, 0 },		0,	0660,

 	"vgaovl",		{ Qvgaovl, 0 },		0,	0660,

 	"vgaovlctl",	{ Qvgaovlctl, 0 },	0, 	0660,

@@ -154,14 +152,6 @@

 	case Qdir:

 		return devdirread(c, a, n, vgadir, nelem(vgadir), devgen);

-

-	case Qvgabios:

-		if(offset >= 0x100000)

-			return 0;

-		if(offset+n >= 0x100000)

-			n = 0x100000 - offset;

-		memmove(a, (uchar*)kaddr(0)+offset, n);

-		return n;

 	case Qvgactl:

 		scr = &vgascreen[0];

--- a/sys/src/cmd/aux/vga/io.c

+++ b/sys/src/cmd/aux/vga/io.c

@@ -245,7 +245,7 @@

 	if(biosfd < 0)

 		biosfd = open("/dev/realmodemem", OREAD);

 	if(biosfd < 0)

-		biosfd = devopen("#v/vgabios", OREAD);

+		biosfd = open("#P/realmodemem", OREAD);

 	if(biosfd < 0)

 		return -1;

 	seek(biosfd, offset, 0);