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/*
* Copyright 2010 Jerome Glisse <glisse@freedesktop.org>
*
* 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
* on the rights to use, copy, modify, merge, publish, distribute, sub
* license, 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 NON-INFRINGEMENT. IN NO EVENT SHALL
* THE AUTHOR(S) AND/OR THEIR SUPPLIERS 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:
* Jerome Glisse
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include "xf86drm.h"
#include "radeon_drm.h"
#include "radeon.h"
unsigned radeon_family_from_device(unsigned device);
static int radeon_get_device(struct radeon *radeon)
{
struct drm_radeon_info info;
int r;
radeon->device = 0;
info.request = RADEON_INFO_DEVICE_ID;
info.value = (uintptr_t)&radeon->device;
r = drmCommandWriteRead(radeon->fd, DRM_RADEON_INFO, &info,
sizeof(struct drm_radeon_info));
return r;
}
int radeon_init(struct radeon *radeon)
{
int fd;
int r;
fd = drmOpen("radeon", NULL);
if (fd < 0) {
PERR("failed opening radeon drm file\n");
return -errno;
}
radeon->fd = fd;
radeon->device = 0;
r = radeon_get_device(radeon);
if (r) {
PERR("Failed to get device id\n");
radeon_fini(radeon);
return -EINVAL;
}
radeon->family = radeon_family_from_device(radeon->device);
if (radeon->family == CHIP_UNKNOWN) {
PERR("Unknown chipset 0x%04X\n", radeon->device);
return -EINVAL;
}
return 0;
}
void radeon_fini(struct radeon *radeon)
{
drmClose(radeon->fd);
}
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