137 lines
3.1 KiB
C
137 lines
3.1 KiB
C
/*
|
|
* Copyright © 2007 Red Hat, Inc.
|
|
*
|
|
* 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:
|
|
* Dave Airlie <airlied@redhat.com>
|
|
*
|
|
*/
|
|
|
|
#include "dix-config.h"
|
|
|
|
#include "dumb_bo.h"
|
|
|
|
#include <errno.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/mman.h>
|
|
#include <unistd.h>
|
|
#include <xf86drm.h>
|
|
|
|
struct dumb_bo *
|
|
dumb_bo_create(int fd,
|
|
const unsigned width, const unsigned height, const unsigned bpp)
|
|
{
|
|
struct drm_mode_create_dumb arg;
|
|
struct dumb_bo *bo;
|
|
int ret;
|
|
|
|
bo = calloc(1, sizeof(*bo));
|
|
if (!bo)
|
|
return NULL;
|
|
|
|
memset(&arg, 0, sizeof(arg));
|
|
arg.width = width;
|
|
arg.height = height;
|
|
arg.bpp = bpp;
|
|
|
|
ret = drmIoctl(fd, DRM_IOCTL_MODE_CREATE_DUMB, &arg);
|
|
if (ret)
|
|
goto err_free;
|
|
|
|
bo->handle = arg.handle;
|
|
bo->size = arg.size;
|
|
bo->pitch = arg.pitch;
|
|
|
|
return bo;
|
|
err_free:
|
|
free(bo);
|
|
return NULL;
|
|
}
|
|
|
|
int
|
|
dumb_bo_map(int fd, struct dumb_bo *bo)
|
|
{
|
|
struct drm_mode_map_dumb arg;
|
|
int ret;
|
|
void *map;
|
|
|
|
if (bo->ptr) {
|
|
return 0;
|
|
}
|
|
|
|
memset(&arg, 0, sizeof(arg));
|
|
arg.handle = bo->handle;
|
|
|
|
ret = drmIoctl(fd, DRM_IOCTL_MODE_MAP_DUMB, &arg);
|
|
if (ret)
|
|
return ret;
|
|
|
|
map = mmap(0, bo->size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, arg.offset);
|
|
if (map == MAP_FAILED)
|
|
return -errno;
|
|
|
|
bo->ptr = map;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
dumb_bo_destroy(int fd, struct dumb_bo *bo)
|
|
{
|
|
struct drm_mode_destroy_dumb arg;
|
|
int ret;
|
|
|
|
if (bo->ptr) {
|
|
munmap(bo->ptr, bo->size);
|
|
bo->ptr = NULL;
|
|
}
|
|
|
|
memset(&arg, 0, sizeof(arg));
|
|
arg.handle = bo->handle;
|
|
ret = drmIoctl(fd, DRM_IOCTL_MODE_DESTROY_DUMB, &arg);
|
|
if (ret)
|
|
return -errno;
|
|
|
|
free(bo);
|
|
return 0;
|
|
}
|
|
|
|
struct dumb_bo *
|
|
dumb_get_bo_from_fd(int fd, int handle, int pitch, int size)
|
|
{
|
|
struct dumb_bo *bo;
|
|
int ret;
|
|
|
|
bo = calloc(1, sizeof(*bo));
|
|
if (!bo)
|
|
return NULL;
|
|
|
|
ret = drmPrimeFDToHandle(fd, handle, &bo->handle);
|
|
if (ret) {
|
|
free(bo);
|
|
return NULL;
|
|
}
|
|
bo->pitch = pitch;
|
|
bo->size = size;
|
|
return bo;
|
|
}
|