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

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