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drm/amdkfd: Add spatial partitioning support in KFD

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This patch introduces multi-partition support in KFD.
This patch includes:
- Support for maximum 8 spatial partitions in KFD.
- Initialize one HIQ per partition.
- Management of VMID range depending on partition mode.
- Management of doorbell aperture space between all
  partitions.
- Each partition does its own queue management, interrupt
  handling, SMI event reporting.
- IOMMU, if enabled with multiple partitions, will only work
  on first partition.
- SPM is only supported on the first partition.
- Currently, there is no support for resetting individual
  partitions. All partitions will reset together.

Signed-off-by: Mukul Joshi <mukul.joshi@amd.com>
Tested-by: Amber Lin <Amber.Lin@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Mukul Joshi
2022-05-09 16:33:38 -04:00
committed by Alex Deucher
parent 8dc1db3172
commit 74c5b85da7
7 changed files with 206 additions and 75 deletions
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8
drivers/gpu/drm/amd/amdkfd/kfd_migrate.c
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@@ -423,7 +423,7 @@ svm_migrate_vma_to_vram(struct amdgpu_device *adev, struct svm_range *prange,
kfd_smi_event_migration_start(adev->kfd.dev, p->lead_thread->pid,
start >> PAGE_SHIFT, end >> PAGE_SHIFT,
0, adev->kfd.dev->node->id, prange->prefetch_loc,
0, adev->kfd.dev->nodes[0]->id, prange->prefetch_loc,
prange->preferred_loc, trigger);
r = migrate_vma_setup(&migrate);
@@ -456,7 +456,7 @@ svm_migrate_vma_to_vram(struct amdgpu_device *adev, struct svm_range *prange,
kfd_smi_event_migration_end(adev->kfd.dev, p->lead_thread->pid,
start >> PAGE_SHIFT, end >> PAGE_SHIFT,
0, adev->kfd.dev->node->id, trigger);
0, adev->kfd.dev->nodes[0]->id, trigger);
svm_range_dma_unmap(adev->dev, scratch, 0, npages);
svm_range_free_dma_mappings(prange);
@@ -701,7 +701,7 @@ svm_migrate_vma_to_ram(struct amdgpu_device *adev, struct svm_range *prange,
kfd_smi_event_migration_start(adev->kfd.dev, p->lead_thread->pid,
start >> PAGE_SHIFT, end >> PAGE_SHIFT,
adev->kfd.dev->node->id, 0, prange->prefetch_loc,
adev->kfd.dev->nodes[0]->id, 0, prange->prefetch_loc,
prange->preferred_loc, trigger);
r = migrate_vma_setup(&migrate);
@@ -737,7 +737,7 @@ svm_migrate_vma_to_ram(struct amdgpu_device *adev, struct svm_range *prange,
kfd_smi_event_migration_end(adev->kfd.dev, p->lead_thread->pid,
start >> PAGE_SHIFT, end >> PAGE_SHIFT,
adev->kfd.dev->node->id, 0, trigger);
adev->kfd.dev->nodes[0]->id, 0, trigger);
svm_range_dma_unmap(adev->dev, scratch, 0, npages);