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drm/amdgpu: use doorbell mgr for kfd kernel doorbells

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This patch:
- adds a doorbell bo in kfd device structure.
- creates doorbell page for kfd kernel usages.
- updates the get_kernel_doorbell and free_kernel_doorbell functions
  accordingly

V2: Do not use wrapper API, use direct amdgpu_create_kernel(Alex)
V3:
 - Move single variable declaration below (Christian)
 - Add a to-do item to reuse the KGD kernel level doorbells for
   KFD for non-MES cases, instead of reserving one page (Felix)

Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: Christian Koenig <christian.koenig@amd.com>
Cc: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Shashank Sharma <shashank.sharma@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Shashank Sharma
2023-07-14 15:31:20 +02:00
committed by Alex Deucher
parent 76bd34786e
commit c318666510
3 changed files with 40 additions and 79 deletions
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2
drivers/gpu/drm/amd/amdkfd/kfd_device.c
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@@ -455,8 +455,6 @@ struct kfd_dev *kgd2kfd_probe(struct amdgpu_device *adev, bool vf)
atomic_set(&kfd->compute_profile, 0);
mutex_init(&kfd->doorbell_mutex);
memset(&kfd->doorbell_available_index, 0,
sizeof(kfd->doorbell_available_index));
ida_init(&kfd->doorbell_ida);