LXR linux/drivers/gpu/drm/amd/amdkfd/kfd

   1/*
   2 * Copyright 2018 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#ifndef __KFD_IOMMU_H__
  24#define __KFD_IOMMU_H__
  25
  26#if defined(CONFIG_AMD_IOMMU_V2_MODULE) || defined(CONFIG_AMD_IOMMU_V2)
  27
  28#define KFD_SUPPORT_IOMMU_V2
  29
  30int kfd_iommu_check_device(struct kfd_dev *kfd);
  31int kfd_iommu_device_init(struct kfd_dev *kfd);
  32
  33int kfd_iommu_bind_process_to_device(struct kfd_process_device *pdd);
  34void kfd_iommu_unbind_process(struct kfd_process *p);
  35
  36void kfd_iommu_suspend(struct kfd_dev *kfd);
  37int kfd_iommu_resume(struct kfd_dev *kfd);
  38
  39int kfd_iommu_add_perf_counters(struct kfd_topology_device *kdev);
  40
  41#else
  42
  43static inline int kfd_iommu_check_device(struct kfd_dev *kfd)
  44{
  45        return -ENODEV;
  46}
  47static inline int kfd_iommu_device_init(struct kfd_dev *kfd)
  48{
  49        return 0;
  50}
  51
  52static inline int kfd_iommu_bind_process_to_device(
  53        struct kfd_process_device *pdd)
  54{
  55        return 0;
  56}
  57static inline void kfd_iommu_unbind_process(struct kfd_process *p)
  58{
  59        /* empty */
  60}
  61
  62static inline void kfd_iommu_suspend(struct kfd_dev *kfd)
  63{
  64        /* empty */
  65}
  66static inline int kfd_iommu_resume(struct kfd_dev *kfd)
  67{
  68        return 0;
  69}
  70
  71static inline int kfd_iommu_add_perf_counters(struct kfd_topology_device *kdev)
  72{
  73        return 0;
  74}
  75
  76#endif /* defined(CONFIG_AMD_IOMMU_V2) */
  77
  78#endif /* __KFD_IOMMU_H__ */
  79