[Linux-fbdev-devel] 3DFX mmio code to test with

[James S. <jsi...@tr...>]

Here you go. Something to test it with. I like so see if anyone else is
also having this problem.

/*
 *  This file is subject to the terms and conditions of the GNU General Public
 *  License. See the file COPYING in the main directory of this archive for
 *  more details.
 */

#include <stdio.h>

#include <stdlib.h>
#include <unistd.h>
extern char *optarg;
extern int optind, opterr, optopt;

#include <errno.h>
int errno;

#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <setjmp.h>
#include <sys/mman.h>
#include <asm/page.h>
#include <asm/byteorder.h>
#include <asm/bitops.h>

#include <linux/fb.h>

static unsigned char fontdata_8x16[4096] = {
	/* 65 0x41 'A' */
        0x00, /* 00000000 */
        0x00, /* 00000000 */
        0x10, /* 00010000 */
        0x38, /* 00111000 */
        0x6c, /* 01101100 */
        0xc6, /* 11000110 */
        0xc6, /* 11000110 */
        0xfe, /* 11111110 */
        0xc6, /* 11000110 */
        0xc6, /* 11000110 */
        0xc6, /* 11000110 */
        0xc6, /* 11000110 */
        0x00, /* 00000000 */
        0x00, /* 00000000 */
        0x00, /* 00000000 */
        0x00, /* 00000000 */
};

int
main(int argc, char **argv)
{
	unsigned long mask, eorx;
	int ppw, i, j, k, l;
	unsigned long fgx, bgx, fgcolor = 0xFFFFFFFF, bgcolor = 0;
	unsigned long *dst, *src = NULL;
	struct fb_var_screeninfo fb_var;
	struct fb_fix_screeninfo fb_fix;
	int fb_mem_offset = 0, fbd, r;
	char fbdevice[256];
	int height, width;
	unsigned long *dst1, *dst2, *src1;
	int fbnum = 0;
	int linesize;
	long tmp;
	
	fprintf(stderr, "Opening /dev/fb%d\n", fbnum);
	
	sprintf(fbdevice, "/dev/fb%d", fbnum);
	fbd = open(fbdevice, O_RDWR);
	
	if (fbd < 0)
	{
		fprintf(stderr, "Couldn't open /dev/fb%d; errno: %d (%s)\n", fbnum, errno, strerror(errno));
		exit(1);
	}
	r = ioctl(fbd, FBIOGET_VSCREENINFO, &fb_var);
	if (r < 0)
	{
		fprintf(stderr, "IOCTL FBIOGET_VSCREENINFO error: %d errno: %d (%s)\n", r, errno, strerror(errno));
		exit(1);
	}
	r = ioctl(fbd, FBIOGET_FSCREENINFO, &fb_fix);
	if (r < 0)
	{
		fprintf(stderr, "IOCTL FBIOGET_FSCREENINFO error: %d errno: %d (%s)\n", r, errno, strerror(errno));
		exit(1);
	}

 	tmp = -1 >> (32 - fb_var.bits_per_pixel);
	linesize = fb_fix.line_length;

	fprintf(stderr, "Screen depth is %d\n", fb_var.bits_per_pixel);
	/* map all FB memory */
	fb_mem_offset = (unsigned long)(fb_fix.smem_start) & (~PAGE_MASK);
	dst1 = mmap(NULL,fb_fix.smem_len+fb_mem_offset,PROT_WRITE,MAP_SHARED,fbd,0);
	if (!dst1) {
		fprintf(stderr, "MMap of /dev/fb%d failed\n", fbnum);
		exit(1);
	}

	dst2 = mmap(fb_fix.mmio_start, fb_fix.mmio_len, PROT_WRITE,MAP_SHARED, fbd, 0);
	if (!dst2) {
		fprintf(stderr, "MMap of MMIO of /dev/fb%d failed\n", fbnum);
		exit(1);
	}
	return(0);
}