linux/drivers/gpu/drm/amd/amdgpu/amdgpu_ids.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.
 *
 */
#ifndef __AMDGPU_IDS_H__
#define __AMDGPU_IDS_H__

#include <linux/types.h>
#include <linux/mutex.h>
#include <linux/list.h>
#include <linux/dma-fence.h>

#include "amdgpu_sync.h"

/* maximum number of VMIDs */
#define AMDGPU_NUM_VMID …

struct amdgpu_device;
struct amdgpu_vm;
struct amdgpu_ring;
struct amdgpu_sync;
struct amdgpu_job;

struct amdgpu_vmid { … };

struct amdgpu_vmid_mgr { … };

int amdgpu_pasid_alloc(unsigned int bits);
void amdgpu_pasid_free(u32 pasid);
void amdgpu_pasid_free_delayed(struct dma_resv *resv,
			       u32 pasid);

bool amdgpu_vmid_had_gpu_reset(struct amdgpu_device *adev,
			       struct amdgpu_vmid *id);
bool amdgpu_vmid_uses_reserved(struct amdgpu_vm *vm, unsigned int vmhub);
int amdgpu_vmid_alloc_reserved(struct amdgpu_device *adev,
				unsigned vmhub);
void amdgpu_vmid_free_reserved(struct amdgpu_device *adev,
				unsigned vmhub);
int amdgpu_vmid_grab(struct amdgpu_vm *vm, struct amdgpu_ring *ring,
		     struct amdgpu_job *job, struct dma_fence **fence);
void amdgpu_vmid_reset(struct amdgpu_device *adev, unsigned vmhub,
		       unsigned vmid);
void amdgpu_vmid_reset_all(struct amdgpu_device *adev);

void amdgpu_vmid_mgr_init(struct amdgpu_device *adev);
void amdgpu_vmid_mgr_fini(struct amdgpu_device *adev);

#endif