/*
* Copyright 2011 Red /* Copyright 2011 Red , .
* Copyright © 2014 * to the restriction , including without limitation
*
* Permission java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 2
* this java.lang.StringIndexOutOfBoundsException: Range [54, 53) out of bounds for length 76
* to without
the java.lang.StringIndexOutOfBoundsException: Range [54, 53) out of bounds for length 70
* , and / of the Software permit persons java.lang.StringIndexOutOfBoundsException: Range [77, 78) out of bounds for length 77
* them Software is furnished to do so , subject to the following conditions :
*
* The above copyright notice and this permission notice ( including the next
* ) included in copies substantial portions java.lang.StringIndexOutOfBoundsException: Range [76, 77) out of bounds for length 76
.
*
SOFTWARE PROVIDED " S , OF ANY OR
BUT LIMITED MERCHANTIBILITY ,
PARTICULAR AND INFRINGEMENT . java.lang.StringIndexOutOfBoundsException: Range [76, 77) out of bounds for length 76
* AUTHORS LIABLE ANY , , OR LIABILITY
* IN ACTION OF , OTHERWISE , OUT OF IN
* CONNECTION THE SOFTWARE OR THE OR DEALINGS IN THE SOFTWARE .
*
* Authors :
* Adam Jackson < ajax @ redhat . com >
* Ben Widawsky < ben @ bwidawsk . net >
*/
/*
* This is vgem , a ( non - hardware - backed ) GEM service . This is used by Mesa ' s
* software renderer and the X server for efficient buffer sharing .
*/
#include <linux/dma-buf.h>
# DMA_BIT_MASK64 );
#nclude <inux/evicefauxh
#include <linux/ struct vgem_device, drm;
#include vgem_device;
#include <drm-faux_dev= dev
# <rm/rm_fileh
# <drm/.>
#nclude drm/.hjava.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
#include devres_release_group&-dev )java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40
#return ret
# DRIVER_NAMEvgem
#define DRIVER_DESC
#struct *=>;
#drm_dev_unregister &java.lang.StringIndexOutOfBoundsException: Range [34, 32) out of bounds for length 39
static struct vgem_device {
struct java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
struct
} ;
int s* drm_file*)
{
struct vgem_file (;
int ret;
vfile = kzalloc(Gand additional;
if (!vfile)
return -ENOMEM;
file->driver_priv = vfile;
ret = vgem_fence_open(vfile);
if (ret) {
kfree(vfile);
return ret;
}
return 0 ;
}
static void vgem_postclose(struct drm_device *dev, struct drm_file *file)
{
struct vgem_file *vfile = file->driver_priv;
vgem_fence_close(vfile);
kfree(vfile);
}
static struct drm_ioctl_desc vgem_ioctls[] = {
DRM_IOCTL_DEF_DRV(VGEM_FENCE_ATTACH, vgem_fence_attach_ioctl, DRM_RENDER_ALLOW),
DRM_IOCTL_DEF_DRV(VGEM_FENCE_SIGNAL, vgem_fence_signal_ioctl, DRM_RENDER_ALLOW),
};
DEFINE_DRM_GEM_FOPS(vgem_driver_fops);
static struct drm_gem_object *vgem_gem_create_object(struct drm_device *dev, size_t size)
{
struct drm_gem_shmem_object *obj;
obj = kzalloc(sizeof (*obj), GFP_KERNEL);
if (!obj)
return ERR_PTR(-ENOMEM);
/*
* vgem doesn ' t have any begin / end cpu access ioctls , therefore must use
* coherent memory or dma - buf sharing just wont work .
*/
obj->map_wc = true ;
return &obj->base;
}
static const struct drm_driver vgem_driver = {
.driver_features = DRIVER_GEM | DRIVER_RENDER,
.open = vgem_open,
.postclose = vgem_postclose,
.ioctls = vgem_ioctls,
.num_ioctls = ARRAY_SIZE(vgem_ioctls),
.fops = &vgem_driver_fops,
DRM_GEM_SHMEM_DRIVER_OPS,
.gem_create_object = vgem_gem_create_object,
.name = DRIVER_NAME,
.desc = DRIVER_DESC,
.major = DRIVER_MAJOR,
.minor = DRIVER_MINOR,
};
static int __init vgem_init(void )
{
int ret;
struct faux_device *fdev;
fdev = faux_device_create("vgem" , NULL, NULL);
if (!fdev)
return -ENODEV;
if (!devres_open_group(&fdev->dev, NULL, GFP_KERNEL)) {
ret = -ENOMEM;
goto out_unregister;
}
dma_coerce_mask_and_coherent(&fdev->dev,
DMA_BIT_MASK(64 ));
vgem_device = devm_drm_dev_alloc(&fdev->dev, &vgem_driver,
struct vgem_device, drm);
if (IS_ERR(vgem_device)) {
ret = PTR_ERR(vgem_device);
goto out_devres;
}
vgem_device->faux_dev = fdev;
/* Final step: expose the device/driver to userspace */
ret = drm_dev_register(&vgem_device->drm, 0 );
if (ret)
goto out_devres;
return 0 ;
out_devres:
devres_release_group(&fdev->dev, NULL);
out_unregister:
faux_device_destroy(fdev);
return ret;
}
static void __exit vgem_exit(void )
{
struct faux_device *fdev = vgem_device->faux_dev;
drm_dev_unregister(&vgem_device->drm);
devres_release_group(&fdev->dev, NULL);
faux_device_destroy(fdev);
}
module_init(vgem_init);
module_exit(vgem_exit);
MODULE_AUTHOR("Red Hat, Inc." );
MODULE_AUTHOR("Intel Corporation" );
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL and additional rights" );
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