[linux-2.6-block.git] / drivers / gpu / drm / amd / amdgpu / amdgpu_hmm.h

/*
 * Copyright 2017 Advanced Micro Devices, 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 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 COPYRIGHT HOLDER(S) OR AUTHOR(S) 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: Christian König
 */
#ifndef __AMDGPU_MN_H__
#define __AMDGPU_MN_H__

#include <linux/types.h>
#include <linux/hmm.h>
#include <linux/rwsem.h>
#include <linux/workqueue.h>
#include <linux/interval_tree.h>
#include <linux/mmu_notifier.h>

int amdgpu_hmm_range_get_pages(struct mmu_interval_notifier *notifier,
			       uint64_t start, uint64_t npages, bool readonly,
			       void *owner, struct page **pages,
			       struct hmm_range **phmm_range);
bool amdgpu_hmm_range_get_pages_done(struct hmm_range *hmm_range);

#if defined(CONFIG_HMM_MIRROR)
int amdgpu_hmm_register(struct amdgpu_bo *bo, unsigned long addr);
void amdgpu_hmm_unregister(struct amdgpu_bo *bo);
#else
static inline int amdgpu_hmm_register(struct amdgpu_bo *bo, unsigned long addr)
{
	DRM_WARN_ONCE("HMM_MIRROR kernel config option is not enabled, "
		      "add CONFIG_ZONE_DEVICE=y in config file to fix this\n");
	return -ENODEV;
}
static inline void amdgpu_hmm_unregister(struct amdgpu_bo *bo) {}
#endif

#endif
Commit	Line	Data
9a189996 CK	1	/*
	2	* Copyright 2017 Advanced Micro Devices, Inc.
	3	*
	4	* Permission is hereby granted, free of charge, to any person obtaining a
	5	* copy of this software and associated documentation files (the "Software"),
	6	* to deal in the Software without restriction, including without limitation
	7	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	8	* and/or sell copies of the Software, and to permit persons to whom the
	9	* Software is furnished to do so, subject to the following conditions:
	10	*
	11	* The above copyright notice and this permission notice shall be included in
	12	* all copies or substantial portions of the Software.
	13	*
	14	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	15	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	16	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	17	* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
	18	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	19	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
	20	* OTHER DEALINGS IN THE SOFTWARE.
	21	*
	22	* Authors: Christian König
	23	*/
	24	#ifndef __AMDGPU_MN_H__
	25	#define __AMDGPU_MN_H__
	26
e5eaa7cc PY	27	#include <linux/types.h>
	28	#include <linux/hmm.h>
	29	#include <linux/rwsem.h>
	30	#include <linux/workqueue.h>
	31	#include <linux/interval_tree.h>
f95f51a4	32	#include <linux/mmu_notifier.h>
9a189996	33
04d8d73d	34	int amdgpu_hmm_range_get_pages(struct mmu_interval_notifier *notifier,
d4cbff46 CK	35	uint64_t start, uint64_t npages, bool readonly,
	36	void owner, struct page *pages,
	37	struct hmm_range **phmm_range);
f95f51a4	38	bool amdgpu_hmm_range_get_pages_done(struct hmm_range *hmm_range);
04d8d73d	39
2c5a51f5	40	#if defined(CONFIG_HMM_MIRROR)
d9483ecd CK	41	int amdgpu_hmm_register(struct amdgpu_bo *bo, unsigned long addr);
d9483ecd CK	42	void amdgpu_hmm_unregister(struct amdgpu_bo *bo);
9a189996	43	#else
d9483ecd	44	static inline int amdgpu_hmm_register(struct amdgpu_bo *bo, unsigned long addr)
9a189996	45	{
b9c5eb5b PY	46	DRM_WARN_ONCE("HMM_MIRROR kernel config option is not enabled, "
b9c5eb5b PY	47	"add CONFIG_ZONE_DEVICE=y in config file to fix this\n");
9a189996 CK	48	return -ENODEV;
9a189996 CK	49	}
d9483ecd	50	static inline void amdgpu_hmm_unregister(struct amdgpu_bo *bo) {}
9a189996 CK	51	#endif
	52
	53	#endif