[mirror_ubuntu-artful-kernel.git] / include / drm / drm_gem.h

#ifndef __DRM_GEM_H__
#define __DRM_GEM_H__

/*
 * GEM Graphics Execution Manager Driver Interfaces
 *
 * Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
 * Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
 * Copyright (c) 2009-2010, Code Aurora Forum.
 * All rights reserved.
 * Copyright © 2014 Intel Corporation
 *   Daniel Vetter <daniel.vetter@ffwll.ch>
 *
 * Author: Rickard E. (Rik) Faith <faith@valinux.com>
 * Author: Gareth Hughes <gareth@valinux.com>
 *
 * 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
 * VA LINUX SYSTEMS AND/OR ITS 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.
 */

#include <linux/kref.h>

#include <drm/drm_vma_manager.h>

/**
 * struct drm_gem_object - GEM buffer object
 *
 * This structure defines the generic parts for GEM buffer objects, which are
 * mostly around handling mmap and userspace handles.
 *
 * Buffer objects are often abbreviated to BO.
 */
struct drm_gem_object {
	/**
	 * @refcount:
	 *
	 * Reference count of this object
	 *
	 * Please use drm_gem_object_get() to acquire and drm_gem_object_put()
	 * or drm_gem_object_put_unlocked() to release a reference to a GEM
	 * buffer object.
	 */
	struct kref refcount;

	/**
	 * @handle_count:
	 *
	 * This is the GEM file_priv handle count of this object.
	 *
	 * Each handle also holds a reference. Note that when the handle_count
	 * drops to 0 any global names (e.g. the id in the flink namespace) will
	 * be cleared.
	 *
	 * Protected by &drm_device.object_name_lock.
	 */
	unsigned handle_count;

	/**
	 * @dev: DRM dev this object belongs to.
	 */
	struct drm_device *dev;

	/**
	 * @filp:
	 *
	 * SHMEM file node used as backing storage for swappable buffer objects.
	 * GEM also supports driver private objects with driver-specific backing
	 * storage (contiguous CMA memory, special reserved blocks). In this
	 * case @filp is NULL.
	 */
	struct file *filp;

	/**
	 * @vma_node:
	 *
	 * Mapping info for this object to support mmap. Drivers are supposed to
	 * allocate the mmap offset using drm_gem_create_mmap_offset(). The
	 * offset itself can be retrieved using drm_vma_node_offset_addr().
	 *
	 * Memory mapping itself is handled by drm_gem_mmap(), which also checks
	 * that userspace is allowed to access the object.
	 */
	struct drm_vma_offset_node vma_node;

	/**
	 * @size:
	 *
	 * Size of the object, in bytes.  Immutable over the object's
	 * lifetime.
	 */
	size_t size;

	/**
	 * @name:
	 *
	 * Global name for this object, starts at 1. 0 means unnamed.
	 * Access is covered by &drm_device.object_name_lock. This is used by
	 * the GEM_FLINK and GEM_OPEN ioctls.
	 */
	int name;

	/**
	 * @read_domains:
	 *
	 * Read memory domains. These monitor which caches contain read/write data
	 * related to the object. When transitioning from one set of domains
	 * to another, the driver is called to ensure that caches are suitably
	 * flushed and invalidated.
	 */
	uint32_t read_domains;

	/**
	 * @write_domain: Corresponding unique write memory domain.
	 */
	uint32_t write_domain;

	/**
	 * @pending_read_domains:
	 *
	 * While validating an exec operation, the
	 * new read/write domain values are computed here.
	 * They will be transferred to the above values
	 * at the point that any cache flushing occurs
	 */
	uint32_t pending_read_domains;

	/**
	 * @pending_write_domain: Write domain similar to @pending_read_domains.
	 */
	uint32_t pending_write_domain;

	/**
	 * @dma_buf:
	 *
	 * dma-buf associated with this GEM object.
	 *
	 * Pointer to the dma-buf associated with this gem object (either
	 * through importing or exporting). We break the resulting reference
	 * loop when the last gem handle for this object is released.
	 *
	 * Protected by &drm_device.object_name_lock.
	 */
	struct dma_buf *dma_buf;

	/**
	 * @import_attach:
	 *
	 * dma-buf attachment backing this object.
	 *
	 * Any foreign dma_buf imported as a gem object has this set to the
	 * attachment point for the device. This is invariant over the lifetime
	 * of a gem object.
	 *
	 * The &drm_driver.gem_free_object callback is responsible for cleaning
	 * up the dma_buf attachment and references acquired at import time.
	 *
	 * Note that the drm gem/prime core does not depend upon drivers setting
	 * this field any more. So for drivers where this doesn't make sense
	 * (e.g. virtual devices or a displaylink behind an usb bus) they can
	 * simply leave it as NULL.
	 */
	struct dma_buf_attachment *import_attach;
};

/**
 * DEFINE_DRM_GEM_FOPS() - macro to generate file operations for GEM drivers
 * @name: name for the generated structure
 *
 * This macro autogenerates a suitable &struct file_operations for GEM based
 * drivers, which can be assigned to &drm_driver.fops. Note that this structure
 * cannot be shared between drivers, because it contains a reference to the
 * current module using THIS_MODULE.
 *
 * Note that the declaration is already marked as static - if you need a
 * non-static version of this you're probably doing it wrong and will break the
 * THIS_MODULE reference by accident.
 */
#define DEFINE_DRM_GEM_FOPS(name) \
	static const struct file_operations name = {\
		.owner		= THIS_MODULE,\
		.open		= drm_open,\
		.release	= drm_release,\
		.unlocked_ioctl	= drm_ioctl,\
		.compat_ioctl	= drm_compat_ioctl,\
		.poll		= drm_poll,\
		.read		= drm_read,\
		.llseek		= noop_llseek,\
		.mmap		= drm_gem_mmap,\
	}

void drm_gem_object_release(struct drm_gem_object *obj);
void drm_gem_object_free(struct kref *kref);
int drm_gem_object_init(struct drm_device *dev,
			struct drm_gem_object *obj, size_t size);
void drm_gem_private_object_init(struct drm_device *dev,
				 struct drm_gem_object *obj, size_t size);
void drm_gem_vm_open(struct vm_area_struct *vma);
void drm_gem_vm_close(struct vm_area_struct *vma);
int drm_gem_mmap_obj(struct drm_gem_object *obj, unsigned long obj_size,
		     struct vm_area_struct *vma);
int drm_gem_mmap(struct file *filp, struct vm_area_struct *vma);

/**
 * drm_gem_object_get - acquire a GEM buffer object reference
 * @obj: GEM buffer object
 *
 * This function acquires an additional reference to @obj. It is illegal to
 * call this without already holding a reference. No locks required.
 */
static inline void drm_gem_object_get(struct drm_gem_object *obj)
{
	kref_get(&obj->refcount);
}

/**
 * __drm_gem_object_put - raw function to release a GEM buffer object reference
 * @obj: GEM buffer object
 *
 * This function is meant to be used by drivers which are not encumbered with
 * &drm_device.struct_mutex legacy locking and which are using the
 * gem_free_object_unlocked callback. It avoids all the locking checks and
 * locking overhead of drm_gem_object_put() and drm_gem_object_put_unlocked().
 *
 * Drivers should never call this directly in their code. Instead they should
 * wrap it up into a ``driver_gem_object_put(struct driver_gem_object *obj)``
 * wrapper function, and use that. Shared code should never call this, to
 * avoid breaking drivers by accident which still depend upon
 * &drm_device.struct_mutex locking.
 */
static inline void
__drm_gem_object_put(struct drm_gem_object *obj)
{
	kref_put(&obj->refcount, drm_gem_object_free);
}

void drm_gem_object_put_unlocked(struct drm_gem_object *obj);
void drm_gem_object_put(struct drm_gem_object *obj);

/**
 * drm_gem_object_reference - acquire a GEM buffer object reference
 * @obj: GEM buffer object
 *
 * This is a compatibility alias for drm_gem_object_get() and should not be
 * used by new code.
 */
static inline void drm_gem_object_reference(struct drm_gem_object *obj)
{
	drm_gem_object_get(obj);
}

/**
 * __drm_gem_object_unreference - raw function to release a GEM buffer object
 *                                reference
 * @obj: GEM buffer object
 *
 * This is a compatibility alias for __drm_gem_object_put() and should not be
 * used by new code.
 */
static inline void __drm_gem_object_unreference(struct drm_gem_object *obj)
{
	__drm_gem_object_put(obj);
}

/**
 * drm_gem_object_unreference_unlocked - release a GEM buffer object reference
 * @obj: GEM buffer object
 *
 * This is a compatibility alias for drm_gem_object_put_unlocked() and should
 * not be used by new code.
 */
static inline void
drm_gem_object_unreference_unlocked(struct drm_gem_object *obj)
{
	drm_gem_object_put_unlocked(obj);
}

/**
 * drm_gem_object_unreference - release a GEM buffer object reference
 * @obj: GEM buffer object
 *
 * This is a compatibility alias for drm_gem_object_put() and should not be
 * used by new code.
 */
static inline void drm_gem_object_unreference(struct drm_gem_object *obj)
{
	drm_gem_object_put(obj);
}

int drm_gem_handle_create(struct drm_file *file_priv,
			  struct drm_gem_object *obj,
			  u32 *handlep);
int drm_gem_handle_delete(struct drm_file *filp, u32 handle);


void drm_gem_free_mmap_offset(struct drm_gem_object *obj);
int drm_gem_create_mmap_offset(struct drm_gem_object *obj);
int drm_gem_create_mmap_offset_size(struct drm_gem_object *obj, size_t size);

struct page **drm_gem_get_pages(struct drm_gem_object *obj);
void drm_gem_put_pages(struct drm_gem_object *obj, struct page **pages,
		bool dirty, bool accessed);

struct drm_gem_object *drm_gem_object_lookup(struct drm_file *filp, u32 handle);
int drm_gem_dumb_destroy(struct drm_file *file,
			 struct drm_device *dev,
			 uint32_t handle);

#endif /* __DRM_GEM_H__ */
Commit	Line	Data
d9fc9413 DV	1	#ifndef __DRM_GEM_H__
	2	#define __DRM_GEM_H__
	3
	4	/*
	5	* GEM Graphics Execution Manager Driver Interfaces
	6	*
	7	* Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
	8	* Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
	9	* Copyright (c) 2009-2010, Code Aurora Forum.
	10	* All rights reserved.
	11	* Copyright © 2014 Intel Corporation
	12	* Daniel Vetter <daniel.vetter@ffwll.ch>
	13	*
	14	* Author: Rickard E. (Rik) Faith <faith@valinux.com>
	15	* Author: Gareth Hughes <gareth@valinux.com>
	16	*
	17	* Permission is hereby granted, free of charge, to any person obtaining a
	18	* copy of this software and associated documentation files (the "Software"),
	19	* to deal in the Software without restriction, including without limitation
	20	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	21	* and/or sell copies of the Software, and to permit persons to whom the
	22	* Software is furnished to do so, subject to the following conditions:
	23	*
	24	* The above copyright notice and this permission notice (including the next
	25	* paragraph) shall be included in all copies or substantial portions of the
	26	* Software.
	27	*
	28	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	29	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	30	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	31	* VA LINUX SYSTEMS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
	32	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	33	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
	34	* OTHER DEALINGS IN THE SOFTWARE.
	35	*/
	36
c6bb9baa DV	37	#include <linux/kref.h>
	38
	39	#include <drm/drm_vma_manager.h>
	40
d9fc9413	41	/**
decc60bf DV	42	* struct drm_gem_object - GEM buffer object
	43	*
	44	* This structure defines the generic parts for GEM buffer objects, which are
	45	* mostly around handling mmap and userspace handles.
	46	*
	47	* Buffer objects are often abbreviated to BO.
d9fc9413 DV	48	*/
d9fc9413 DV	49	struct drm_gem_object {
decc60bf DV	50	/**
	51	* @refcount:
	52	*
	53	* Reference count of this object
	54	*
e6b62714 TR	55	* Please use drm_gem_object_get() to acquire and drm_gem_object_put()
	56	* or drm_gem_object_put_unlocked() to release a reference to a GEM
	57	* buffer object.
decc60bf	58	*/
d9fc9413 DV	59	struct kref refcount;
	60
	61	/**
decc60bf DV	62	* @handle_count:
	63	*
	64	* This is the GEM file_priv handle count of this object.
d9fc9413 DV	65	*
	66	* Each handle also holds a reference. Note that when the handle_count
	67	* drops to 0 any global names (e.g. the id in the flink namespace) will
	68	* be cleared.
	69	*
940eba2d	70	* Protected by &drm_device.object_name_lock.
decc60bf	71	*/
d9fc9413 DV	72	unsigned handle_count;
d9fc9413 DV	73
decc60bf DV	74	/**
	75	* @dev: DRM dev this object belongs to.
	76	*/
d9fc9413 DV	77	struct drm_device *dev;
d9fc9413 DV	78
decc60bf DV	79	/**
	80	* @filp:
	81	*
	82	* SHMEM file node used as backing storage for swappable buffer objects.
	83	* GEM also supports driver private objects with driver-specific backing
	84	* storage (contiguous CMA memory, special reserved blocks). In this
	85	* case @filp is NULL.
	86	*/
d9fc9413 DV	87	struct file *filp;
d9fc9413 DV	88
decc60bf DV	89	/**
	90	* @vma_node:
	91	*
	92	* Mapping info for this object to support mmap. Drivers are supposed to
	93	* allocate the mmap offset using drm_gem_create_mmap_offset(). The
	94	* offset itself can be retrieved using drm_vma_node_offset_addr().
	95	*
	96	* Memory mapping itself is handled by drm_gem_mmap(), which also checks
	97	* that userspace is allowed to access the object.
	98	*/
d9fc9413 DV	99	struct drm_vma_offset_node vma_node;
	100
	101	/**
decc60bf DV	102	* @size:
decc60bf DV	103	*
d9fc9413 DV	104	* Size of the object, in bytes. Immutable over the object's
	105	* lifetime.
	106	*/
	107	size_t size;
	108
	109	/**
decc60bf DV	110	* @name:
decc60bf DV	111	*
d9fc9413	112	* Global name for this object, starts at 1. 0 means unnamed.
940eba2d DV	113	* Access is covered by &drm_device.object_name_lock. This is used by
940eba2d DV	114	* the GEM_FLINK and GEM_OPEN ioctls.
d9fc9413 DV	115	*/
	116	int name;
	117
	118	/**
decc60bf DV	119	* @read_domains:
	120	*
	121	* Read memory domains. These monitor which caches contain read/write data
d9fc9413 DV	122	* related to the object. When transitioning from one set of domains
d9fc9413 DV	123	* to another, the driver is called to ensure that caches are suitably
decc60bf	124	* flushed and invalidated.
d9fc9413 DV	125	*/
d9fc9413 DV	126	uint32_t read_domains;
decc60bf DV	127
	128	/**
	129	* @write_domain: Corresponding unique write memory domain.
	130	*/
d9fc9413 DV	131	uint32_t write_domain;
	132
	133	/**
decc60bf DV	134	* @pending_read_domains:
decc60bf DV	135	*
d9fc9413 DV	136	* While validating an exec operation, the
	137	* new read/write domain values are computed here.
	138	* They will be transferred to the above values
	139	* at the point that any cache flushing occurs
	140	*/
	141	uint32_t pending_read_domains;
decc60bf DV	142
	143	/**
	144	* @pending_write_domain: Write domain similar to @pending_read_domains.
	145	*/
d9fc9413 DV	146	uint32_t pending_write_domain;
	147
	148	/**
decc60bf DV	149	* @dma_buf:
	150	*
	151	* dma-buf associated with this GEM object.
d9fc9413 DV	152	*
	153	* Pointer to the dma-buf associated with this gem object (either
	154	* through importing or exporting). We break the resulting reference
	155	* loop when the last gem handle for this object is released.
	156	*
940eba2d	157	* Protected by &drm_device.object_name_lock.
d9fc9413 DV	158	*/
	159	struct dma_buf *dma_buf;
	160
	161	/**
decc60bf DV	162	* @import_attach:
	163	*
	164	* dma-buf attachment backing this object.
d9fc9413 DV	165	*
	166	* Any foreign dma_buf imported as a gem object has this set to the
	167	* attachment point for the device. This is invariant over the lifetime
	168	* of a gem object.
	169	*
940eba2d	170	* The &drm_driver.gem_free_object callback is responsible for cleaning
d9fc9413 DV	171	* up the dma_buf attachment and references acquired at import time.
	172	*
	173	* Note that the drm gem/prime core does not depend upon drivers setting
	174	* this field any more. So for drivers where this doesn't make sense
	175	* (e.g. virtual devices or a displaylink behind an usb bus) they can
	176	* simply leave it as NULL.
	177	*/
	178	struct dma_buf_attachment *import_attach;
	179	};
	180
f42e1819 DV	181	/**
	182	* DEFINE_DRM_GEM_FOPS() - macro to generate file operations for GEM drivers
	183	* @name: name for the generated structure
	184	*
	185	* This macro autogenerates a suitable &struct file_operations for GEM based
	186	* drivers, which can be assigned to &drm_driver.fops. Note that this structure
	187	* cannot be shared between drivers, because it contains a reference to the
	188	* current module using THIS_MODULE.
	189	*
	190	* Note that the declaration is already marked as static - if you need a
	191	* non-static version of this you're probably doing it wrong and will break the
	192	* THIS_MODULE reference by accident.
	193	*/
	194	#define DEFINE_DRM_GEM_FOPS(name) \
	195	static const struct file_operations name = {\
	196	.owner = THIS_MODULE,\
	197	.open = drm_open,\
	198	.release = drm_release,\
	199	.unlocked_ioctl = drm_ioctl,\
	200	.compat_ioctl = drm_compat_ioctl,\
	201	.poll = drm_poll,\
	202	.read = drm_read,\
	203	.llseek = noop_llseek,\
	204	.mmap = drm_gem_mmap,\
	205	}
	206
d9fc9413 DV	207	void drm_gem_object_release(struct drm_gem_object *obj);
	208	void drm_gem_object_free(struct kref *kref);
	209	int drm_gem_object_init(struct drm_device *dev,
	210	struct drm_gem_object *obj, size_t size);
	211	void drm_gem_private_object_init(struct drm_device *dev,
	212	struct drm_gem_object *obj, size_t size);
	213	void drm_gem_vm_open(struct vm_area_struct *vma);
	214	void drm_gem_vm_close(struct vm_area_struct *vma);
	215	int drm_gem_mmap_obj(struct drm_gem_object *obj, unsigned long obj_size,
	216	struct vm_area_struct *vma);
	217	int drm_gem_mmap(struct file filp, struct vm_area_struct vma);
	218
decc60bf	219	/**
e6b62714	220	* drm_gem_object_get - acquire a GEM buffer object reference
decc60bf DV	221	* @obj: GEM buffer object
decc60bf DV	222	*
e6b62714 TR	223	* This function acquires an additional reference to @obj. It is illegal to
e6b62714 TR	224	* call this without already holding a reference. No locks required.
decc60bf	225	*/
e6b62714	226	static inline void drm_gem_object_get(struct drm_gem_object *obj)
d9fc9413 DV	227	{
	228	kref_get(&obj->refcount);
	229	}
	230
decc60bf	231	/**
e6b62714	232	* __drm_gem_object_put - raw function to release a GEM buffer object reference
decc60bf DV	233	* @obj: GEM buffer object
decc60bf DV	234	*
9f0ba539	235	* This function is meant to be used by drivers which are not encumbered with
940eba2d	236	* &drm_device.struct_mutex legacy locking and which are using the
9f0ba539	237	* gem_free_object_unlocked callback. It avoids all the locking checks and
e6b62714	238	* locking overhead of drm_gem_object_put() and drm_gem_object_put_unlocked().
decc60bf	239	*
9f0ba539	240	* Drivers should never call this directly in their code. Instead they should
e6b62714 TR	241	* wrap it up into a ``driver_gem_object_put(struct driver_gem_object *obj)``
e6b62714 TR	242	* wrapper function, and use that. Shared code should never call this, to
940eba2d DV	243	* avoid breaking drivers by accident which still depend upon
940eba2d DV	244	* &drm_device.struct_mutex locking.
decc60bf	245	*/
d9fc9413	246	static inline void
e6b62714	247	__drm_gem_object_put(struct drm_gem_object *obj)
d9fc9413	248	{
9f0ba539	249	kref_put(&obj->refcount, drm_gem_object_free);
d9fc9413 DV	250	}
d9fc9413 DV	251
e6b62714 TR	252	void drm_gem_object_put_unlocked(struct drm_gem_object *obj);
	253	void drm_gem_object_put(struct drm_gem_object *obj);
	254
	255	/**
	256	* drm_gem_object_reference - acquire a GEM buffer object reference
	257	* @obj: GEM buffer object
	258	*
	259	* This is a compatibility alias for drm_gem_object_get() and should not be
	260	* used by new code.
	261	*/
	262	static inline void drm_gem_object_reference(struct drm_gem_object *obj)
	263	{
	264	drm_gem_object_get(obj);
	265	}
	266
	267	/**
	268	* __drm_gem_object_unreference - raw function to release a GEM buffer object
	269	* reference
	270	* @obj: GEM buffer object
	271	*
	272	* This is a compatibility alias for __drm_gem_object_put() and should not be
	273	* used by new code.
	274	*/
	275	static inline void __drm_gem_object_unreference(struct drm_gem_object *obj)
	276	{
	277	__drm_gem_object_put(obj);
	278	}
	279
	280	/**
	281	* drm_gem_object_unreference_unlocked - release a GEM buffer object reference
	282	* @obj: GEM buffer object
	283	*
	284	* This is a compatibility alias for drm_gem_object_put_unlocked() and should
	285	* not be used by new code.
	286	*/
	287	static inline void
	288	drm_gem_object_unreference_unlocked(struct drm_gem_object *obj)
	289	{
	290	drm_gem_object_put_unlocked(obj);
	291	}
	292
	293	/**
	294	* drm_gem_object_unreference - release a GEM buffer object reference
	295	* @obj: GEM buffer object
	296	*
	297	* This is a compatibility alias for drm_gem_object_put() and should not be
	298	* used by new code.
	299	*/
	300	static inline void drm_gem_object_unreference(struct drm_gem_object *obj)
	301	{
	302	drm_gem_object_put(obj);
	303	}
d9fc9413 DV	304
	305	int drm_gem_handle_create(struct drm_file *file_priv,
	306	struct drm_gem_object *obj,
	307	u32 *handlep);
	308	int drm_gem_handle_delete(struct drm_file *filp, u32 handle);
	309
	310
	311	void drm_gem_free_mmap_offset(struct drm_gem_object *obj);
	312	int drm_gem_create_mmap_offset(struct drm_gem_object *obj);
	313	int drm_gem_create_mmap_offset_size(struct drm_gem_object *obj, size_t size);
	314
	315	struct page *drm_gem_get_pages(struct drm_gem_object obj);
	316	void drm_gem_put_pages(struct drm_gem_object obj, struct page *pages,
	317	bool dirty, bool accessed);
	318
a8ad0bd8	319	struct drm_gem_object drm_gem_object_lookup(struct drm_file filp, u32 handle);
d9fc9413 DV	320	int drm_gem_dumb_destroy(struct drm_file *file,
	321	struct drm_device *dev,
	322	uint32_t handle);
	323
	324	#endif /* __DRM_GEM_H__ */