Release 4.15 drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.h

/*
 * Copyright 2014 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.
 */

/* amdgpu_amdkfd.h defines the private interface between amdgpu and amdkfd. */

#ifndef AMDGPU_AMDKFD_H_INCLUDED

#define AMDGPU_AMDKFD_H_INCLUDED

#include <linux/types.h>
#include <linux/mmu_context.h>
#include <kgd_kfd_interface.h>

struct amdgpu_device;


struct kgd_mem {
	
struct amdgpu_bo *bo;
	
uint64_t gpu_addr;
	
void *cpu_ptr;
};

int amdgpu_amdkfd_init(void);
void amdgpu_amdkfd_fini(void);

void amdgpu_amdkfd_suspend(struct amdgpu_device *adev);
int amdgpu_amdkfd_resume(struct amdgpu_device *adev);
void amdgpu_amdkfd_interrupt(struct amdgpu_device *adev,
			const void *ih_ring_entry);
void amdgpu_amdkfd_device_probe(struct amdgpu_device *adev);
void amdgpu_amdkfd_device_init(struct amdgpu_device *adev);
void amdgpu_amdkfd_device_fini(struct amdgpu_device *adev);

struct kfd2kgd_calls *amdgpu_amdkfd_gfx_7_get_functions(void);
struct kfd2kgd_calls *amdgpu_amdkfd_gfx_8_0_get_functions(void);

/* Shared API */
int alloc_gtt_mem(struct kgd_dev *kgd, size_t size,
			void **mem_obj, uint64_t *gpu_addr,
			void **cpu_ptr);
void free_gtt_mem(struct kgd_dev *kgd, void *mem_obj);
uint64_t get_vmem_size(struct kgd_dev *kgd);
uint64_t get_gpu_clock_counter(struct kgd_dev *kgd);

uint32_t get_max_engine_clock_in_mhz(struct kgd_dev *kgd);


#define read_user_wptr(mmptr, wptr, dst)				\
	({                                                              \
                bool valid = false;                                     \
                if ((mmptr) && (wptr)) {                                \
                        if ((mmptr) == current->mm) {                   \
                                valid = !get_user((dst), (wptr));       \
                        } else if (current->mm == NULL) {               \
                                use_mm(mmptr);                          \
                                valid = !get_user((dst), (wptr));       \
                                unuse_mm(mmptr);                        \
                        }                                               \
                }                                                       \
                valid;                                                  \
        })

#endif /* AMDGPU_AMDKFD_H_INCLUDED */
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Directory: drivers/gpu/drm/amd/amdgpu

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