mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-12 11:36:35 +00:00
64d1c3a43a
dGPUs work without IOMMUv2. Make IOMMUv2 initialization dependent on ASIC information. Also allow building KFD without IOMMUv2 support. This is still useful for dGPUs and prepares for enabling KFD on architectures that don't support AMD IOMMUv2. v2: * Centralize IOMMUv2 code to avoid #ifdefs in too many places v3: * Imply AMD_IOMMU_V2 in Kconfig Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com> Acked-by: Christian Konig <christian.koenig@amd.com> Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com> Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
78 lines
2.3 KiB
C
78 lines
2.3 KiB
C
/*
|
|
* Copyright 2018 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 __KFD_IOMMU_H__
|
|
#define __KFD_IOMMU_H__
|
|
|
|
#if defined(CONFIG_AMD_IOMMU_V2_MODULE) || defined(CONFIG_AMD_IOMMU_V2)
|
|
|
|
#define KFD_SUPPORT_IOMMU_V2
|
|
|
|
int kfd_iommu_check_device(struct kfd_dev *kfd);
|
|
int kfd_iommu_device_init(struct kfd_dev *kfd);
|
|
|
|
int kfd_iommu_bind_process_to_device(struct kfd_process_device *pdd);
|
|
void kfd_iommu_unbind_process(struct kfd_process *p);
|
|
|
|
void kfd_iommu_suspend(struct kfd_dev *kfd);
|
|
int kfd_iommu_resume(struct kfd_dev *kfd);
|
|
|
|
int kfd_iommu_add_perf_counters(struct kfd_topology_device *kdev);
|
|
|
|
#else
|
|
|
|
static inline int kfd_iommu_check_device(struct kfd_dev *kfd)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
static inline int kfd_iommu_device_init(struct kfd_dev *kfd)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int kfd_iommu_bind_process_to_device(
|
|
struct kfd_process_device *pdd)
|
|
{
|
|
return 0;
|
|
}
|
|
static inline void kfd_iommu_unbind_process(struct kfd_process *p)
|
|
{
|
|
/* empty */
|
|
}
|
|
|
|
static inline void kfd_iommu_suspend(struct kfd_dev *kfd)
|
|
{
|
|
/* empty */
|
|
}
|
|
static inline int kfd_iommu_resume(struct kfd_dev *kfd)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int kfd_iommu_add_perf_counters(struct kfd_topology_device *kdev)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
#endif /* defined(CONFIG_AMD_IOMMU_V2) */
|
|
|
|
#endif /* __KFD_IOMMU_H__ */
|