LXR linux/drivers/gpu/drm/amd/amdgpu/amdgpu

   1/*
   2 * Copyright 2014 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
  23/* amdgpu_amdkfd.h defines the private interface between amdgpu and amdkfd. */
  24
  25#ifndef AMDGPU_AMDKFD_H_INCLUDED
  26#define AMDGPU_AMDKFD_H_INCLUDED
  27
  28#include <linux/types.h>
  29#include <linux/mmu_context.h>
  30#include <kgd_kfd_interface.h>
  31
  32struct amdgpu_device;
  33
  34struct kgd_mem {
  35        struct amdgpu_bo *bo;
  36        uint64_t gpu_addr;
  37        void *cpu_ptr;
  38};
  39
  40int amdgpu_amdkfd_init(void);
  41void amdgpu_amdkfd_fini(void);
  42
  43void amdgpu_amdkfd_suspend(struct amdgpu_device *adev);
  44int amdgpu_amdkfd_resume(struct amdgpu_device *adev);
  45void amdgpu_amdkfd_interrupt(struct amdgpu_device *adev,
  46                        const void *ih_ring_entry);
  47void amdgpu_amdkfd_device_probe(struct amdgpu_device *adev);
  48void amdgpu_amdkfd_device_init(struct amdgpu_device *adev);
  49void amdgpu_amdkfd_device_fini(struct amdgpu_device *adev);
  50
  51struct kfd2kgd_calls *amdgpu_amdkfd_gfx_7_get_functions(void);
  52struct kfd2kgd_calls *amdgpu_amdkfd_gfx_8_0_get_functions(void);
  53
  54/* Shared API */
  55int alloc_gtt_mem(struct kgd_dev *kgd, size_t size,
  56                        void **mem_obj, uint64_t *gpu_addr,
  57                        void **cpu_ptr);
  58void free_gtt_mem(struct kgd_dev *kgd, void *mem_obj);
  59uint64_t get_vmem_size(struct kgd_dev *kgd);
  60uint64_t get_gpu_clock_counter(struct kgd_dev *kgd);
  61
  62uint32_t get_max_engine_clock_in_mhz(struct kgd_dev *kgd);
  63
  64#define read_user_wptr(mmptr, wptr, dst)                                \
  65        ({                                                              \
  66                bool valid = false;                                     \
  67                if ((mmptr) && (wptr)) {                                \
  68                        if ((mmptr) == current->mm) {                   \
  69                                valid = !get_user((dst), (wptr));       \
  70                        } else if (current->mm == NULL) {               \
  71                                use_mm(mmptr);                          \
  72                                valid = !get_user((dst), (wptr));       \
  73                                unuse_mm(mmptr);                        \
  74                        }                                               \
  75                }                                                       \
  76                valid;                                                  \
  77        })
  78
  79#endif /* AMDGPU_AMDKFD_H_INCLUDED */
  80