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drm/udl: Allocate GEM object via struct drm_driver.gem_create_object 

In preparation of a switch to SHMEM, udl now allocates its GEM
objects via struct drm_driver.gem_create_object. No functional
changes are made.

For SHMEM GEM objects, udl will require the use of a special mmap
function, which we set though the create-object function.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191107094307.19870-3-tzimmermann@suse.de
This commit is contained in:
Thomas Zimmermann 2019-11-07 10:43:05 +01:00
parent 92c4eeb0c9
commit 1d48b9e988
3 changed files with 24 additions and 4 deletions
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1
drivers/gpu/drm/udl/udl_drv.c
View File

@ -64,6 +64,7 @@ static struct drm_driver driver = {
/* gem hooks */
.gem_free_object_unlocked = udl_gem_free_object,
.gem_create_object = udl_driver_gem_create_object,
.gem_vm_ops = &udl_gem_vm_ops,
.dumb_create = udl_dumb_create,

2
drivers/gpu/drm/udl/udl_drv.h
View File

@ -125,6 +125,8 @@ int udl_dumb_create(struct drm_file *file_priv,
int udl_gem_mmap(struct drm_file *file_priv, struct drm_device *dev,
uint32_t handle, uint64_t *offset);
struct drm_gem_object *udl_driver_gem_create_object(struct drm_device *dev,
size_t size);
void udl_gem_free_object(struct drm_gem_object *gem_obj);
struct udl_gem_object *udl_gem_alloc_object(struct drm_device *dev,
size_t size);

25
drivers/gpu/drm/udl/udl_gem.c
View File

@ -6,26 +6,43 @@
#include <linux/dma-buf.h>
#include <linux/vmalloc.h>
#include <drm/drm_drv.h>
#include <drm/drm_mode.h>
#include <drm/drm_prime.h>
#include "udl_drv.h"
struct udl_gem_object *udl_gem_alloc_object(struct drm_device *dev,
size_t size)
/*
* Helpers for struct drm_driver
*/
struct drm_gem_object *udl_driver_gem_create_object(struct drm_device *dev,
size_t size)
{
struct udl_gem_object *obj;
obj = kzalloc(sizeof(*obj), GFP_KERNEL);
if (!obj)
return NULL;
return &obj->base;
}
struct udl_gem_object *udl_gem_alloc_object(struct drm_device *dev,
size_t size)
{
struct drm_gem_object *obj;
obj = dev->driver->gem_create_object(dev, size);
if (obj == NULL)
return NULL;
if (drm_gem_object_init(dev, &obj->base, size) != 0) {
if (drm_gem_object_init(dev, obj, size) != 0) {
kfree(obj);
return NULL;
}
return obj;
return to_udl_bo(obj);
}
static int