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|
/*
* Copyright (C) 2012 Samsung Electronics Co., Ltd.
*
* 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:
* Inki Dae <inki.dae@samsung.com>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <sys/mman.h>
#include <linux/stddef.h>
#include <xf86drm.h>
#include "libdrm.h"
#include "exynos_drm.h"
#include "exynos_drmif.h"
/*
* Create exynos drm device object.
*
* @fd: file descriptor to exynos drm driver opened.
*
* if true, return the device object else NULL.
*/
drm_public struct exynos_device * exynos_device_create(int fd)
{
struct exynos_device *dev;
dev = calloc(sizeof(*dev), 1);
if (!dev) {
fprintf(stderr, "failed to create device[%s].\n",
strerror(errno));
return NULL;
}
dev->fd = fd;
return dev;
}
/*
* Destroy exynos drm device object
*
* @dev: exynos drm device object.
*/
drm_public void exynos_device_destroy(struct exynos_device *dev)
{
free(dev);
}
/*
* Create a exynos buffer object to exynos drm device.
*
* @dev: exynos drm device object.
* @size: user-desired size.
* flags: user-desired memory type.
* user can set one or more types among several types to memory
* allocation and cache attribute types. and as default,
* EXYNOS_BO_NONCONTIG and EXYNOS-BO_NONCACHABLE types would
* be used.
*
* if true, return a exynos buffer object else NULL.
*/
drm_public struct exynos_bo * exynos_bo_create(struct exynos_device *dev,
size_t size, uint32_t flags)
{
struct exynos_bo *bo;
struct drm_exynos_gem_create req = {
.size = size,
.flags = flags,
};
if (size == 0) {
fprintf(stderr, "invalid size.\n");
goto fail;
}
bo = calloc(sizeof(*bo), 1);
if (!bo) {
fprintf(stderr, "failed to create bo[%s].\n",
strerror(errno));
goto err_free_bo;
}
bo->dev = dev;
if (drmIoctl(dev->fd, DRM_IOCTL_EXYNOS_GEM_CREATE, &req)){
fprintf(stderr, "failed to create gem object[%s].\n",
strerror(errno));
goto err_free_bo;
}
bo->handle = req.handle;
bo->size = size;
bo->flags = flags;
return bo;
err_free_bo:
free(bo);
fail:
return NULL;
}
/*
* Get information to gem region allocated.
*
* @dev: exynos drm device object.
* @handle: gem handle to request gem info.
* @size: size to gem object and returned by kernel side.
* @flags: gem flags to gem object and returned by kernel side.
*
* with this function call, you can get flags and size to gem handle
* through bo object.
*
* if true, return 0 else negative.
*/
drm_public int exynos_bo_get_info(struct exynos_device *dev, uint32_t handle,
size_t *size, uint32_t *flags)
{
int ret;
struct drm_exynos_gem_info req = {
.handle = handle,
};
ret = drmIoctl(dev->fd, DRM_IOCTL_EXYNOS_GEM_GET, &req);
if (ret < 0) {
fprintf(stderr, "failed to get gem object information[%s].\n",
strerror(errno));
return ret;
}
*size = req.size;
*flags = req.flags;
return 0;
}
/*
* Destroy a exynos buffer object.
*
* @bo: a exynos buffer object to be destroyed.
*/
drm_public void exynos_bo_destroy(struct exynos_bo *bo)
{
if (!bo)
return;
if (bo->vaddr)
munmap(bo->vaddr, bo->size);
if (bo->handle) {
struct drm_gem_close req = {
.handle = bo->handle,
};
drmIoctl(bo->dev->fd, DRM_IOCTL_GEM_CLOSE, &req);
}
free(bo);
}
/*
* Get a exynos buffer object from a gem global object name.
*
* @dev: a exynos device object.
* @name: a gem global object name exported by another process.
*
* this interface is used to get a exynos buffer object from a gem
* global object name sent by another process for buffer sharing.
*
* if true, return a exynos buffer object else NULL.
*
*/
drm_public struct exynos_bo *
exynos_bo_from_name(struct exynos_device *dev, uint32_t name)
{
struct exynos_bo *bo;
struct drm_gem_open req = {
.name = name,
};
bo = calloc(sizeof(*bo), 1);
if (!bo) {
fprintf(stderr, "failed to allocate bo[%s].\n",
strerror(errno));
return NULL;
}
if (drmIoctl(dev->fd, DRM_IOCTL_GEM_OPEN, &req)) {
fprintf(stderr, "failed to open gem object[%s].\n",
strerror(errno));
goto err_free_bo;
}
bo->dev = dev;
bo->name = name;
bo->handle = req.handle;
return bo;
err_free_bo:
free(bo);
return NULL;
}
/*
* Get a gem global object name from a gem object handle.
*
|
