1992/0528/pc/devvga.c (diff list | history)

1992/0527/sys/src/9/pc/devvga.c:7,12 – 1992/0528/sys/src/9/pc/devvga.c:7,13 (short | long | prev | next)
1992/0527		#include "../port/error.h" #include "devtab.h"
1992/0528		#include "vga.h"
1992/0527		/* * Driver for various VGA cards
1992/0527/sys/src/9/pc/devvga.c:25,32 – 1992/0528/sys/src/9/pc/devvga.c:26,34
1992/0527		Qvgamonitor= 1, Qvgasize= 2, Qvgatype= 3, Qvgaportio= 4, Nvga= 4,
1992/0528		Qvgaport= 4, Qvgaiport= 5, Nvga= 5,
1992/0527		}; Dirtab vgadir[]={
1992/0527/sys/src/9/pc/devvga.c:33,39 – 1992/0528/sys/src/9/pc/devvga.c:35,42
1992/0527		"vgamonitor", {Qvgamonitor}, 0, 0666, "vgatype", {Qvgatype}, 0, 0666, "vgasize", {Qvgasize}, 0, 0666, "vgaportio", {Qvgaportio}, 0, 0666,
1992/0528		"vgaport", {Qvgaport}, 0, 0666, "vgaiport", {Qvgaiport}, 0, 0666,
1992/0527		}; /* a routine from ../port/devcons.c */
1992/0527/sys/src/9/pc/devvga.c:93,99 – 1992/0528/sys/src/9/pc/devvga.c:96,102
1992/0527		case Qvgamonitor: case Qvgatype: case Qvgasize: case Qvgaportio:
1992/0528		case Qvgaport:
1992/0527		break; }
1992/0527/sys/src/9/pc/devvga.c:115,120 – 1992/0528/sys/src/9/pc/devvga.c:118,127
1992/0527		vgaread(Chan *c, void *buf, long n, ulong offset) { char obuf[60];
1992/0528		int port, i; uchar *cp = buf; void *outfunc(int, int);
1992/0527		switch(c->qid.path&~CHDIR){ case Qdir: return devdirread(c, buf, n, vgadir, Nvga, devgen);
1992/0527/sys/src/9/pc/devvga.c:125,151 – 1992/0528/sys/src/9/pc/devvga.c:132,193
1992/0527		case Qvgasize: sprint(obuf, "%dx%d%x%d %s", screeninfo.maxx, screeninfo.maxy, screeninfo.packed ? 16 : 256, screeninfo.interlaced ? "interlaced" : "non-interlaced");
1992/0528		(screeninfo.packed == 0) ? 256 : 16, (screeninfo.interlaced != 0) ? "interlaced" : "non-interlaced");
1992/0527		return readstr(offset, buf, n, obuf); case Qvgaportio: return 0;
1992/0528		case Qvgaport: if (offset + n >= 0x8000) error(Ebadarg); for (port=offset; port<offset+n; port++) *cp++ = inb(port); return n; case Qvgaiport: error(Eio);
1992/0527		} } long vgawrite(Chan *c, void *va, long n, ulong offset)
1992/0528		vgawrite(Chan *c, void *buf, long n, ulong offset)
1992/0527		{ if(offset != 0) error(Ebadarg);
1992/0528		uchar *cp = buf; void (*outfunc)(int, int); int port, i;
1992/0527		switch(c->qid.path&~CHDIR){ case Qdir: error(Eperm); case Qvgamonitor:
1992/0528		if(offset != 0) error(Ebadarg); error(Eperm);
1992/0527		case Qvgatype:
1992/0528		if(offset != 0) error(Ebadarg); error(Eperm);
1992/0527		case Qvgasize: case Qvgaportio: return 0;
1992/0528		if(offset != 0) error(Ebadarg); error(Eperm); case Qvgaport: if (offset + n >= 0x8000) error(Ebadarg); for (port=offset; port<offset+n; port++) outb(port, *cp++); return n; case Qvgaiport: port = offset / 256; switch (port) { case EMISCW: outfunc = genout; break; case SRX: outfunc = srout; break; case GRX: outfunc = grout; break; case ARW: outfunc = arout; break; case CRX: outfunc = crout; break; default: error(Ebadarg); } for (i = offset%256; i < (offset%256) + n; i++) outfunc(i, *cp++); return n;
1992/0527		} }