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/*
* Copyright © 2012 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*
* Authors:
* Ben Widawsky <ben@bwidawsk.net>
*
*/
#include <assert.h>
#include <errno.h>
#include <stdlib.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#include <stropts.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <xf86drm.h>
#include "libvgem.h"
#include "vgem_drm.h"
#define BO_SIZE (4 << 12)
/* elegant word patterns */
static const uint32_t pattern[3] =
{ 0xfeedb00b, 0xb000beee, 0xcacad0d0 };
int main(int argc, char *argv[])
{
int handle, ret;
struct vgem_gem_create create;
void *ptr, *tmp;
int i;
int fd = drm_open_vgem();
assert(fd != -1);
handle = create_vgem_bo(fd, BO_SIZE);
ptr = mmap_vgem_bo(fd, handle, BO_SIZE);
tmp = ptr;
for (i = 0; i < (BO_SIZE / 4); i++, ptr++) {
(*(volatile uint32_t *)ptr) = pattern[i % 3];
assert(*(volatile uint32_t *)ptr == pattern[i % 3]);
}
assert(!munmap(tmp, BO_SIZE));
close(fd);
exit(EXIT_SUCCESS);
}
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