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drm/amdgpu: wait on page directory changes. v2

Browse source 
Pagetables can be moved and therefore the page directory update can be necessary
for the current cs even if none of the the bo's are moved. In that scenario
there is no fence between the sdma0 and gfx ring, so we add one.

v2 (chk): rebased

Signed-off-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Bas Nieuwenhuizen 2015-08-14 20:08:40 +02:00 committed by Alex Deucher
parent b325a789c7
commit 05906dec7d
3 changed files with 11 additions and 0 deletions
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1
drivers/gpu/drm/amd/amdgpu/amdgpu.h
View file

@ -982,6 +982,7 @@ struct amdgpu_vm {
/* contains the page directory */
struct amdgpu_bo *page_directory;
unsigned max_pde_used;
struct fence *page_directory_fence;
/* array of page tables, one for each page directory entry */
struct amdgpu_vm_pt *page_tables;

4
drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
View file

@ -551,6 +551,10 @@ static int amdgpu_bo_vm_update_pte(struct amdgpu_cs_parser *p,
if (r)
return r;
r = amdgpu_sync_fence(adev, &p->ibs[0].sync, vm->page_directory_fence);
if (r)
return r;
r = amdgpu_vm_clear_freed(adev, vm);
if (r)
return r;

6
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
View file

@ -495,7 +495,10 @@ int amdgpu_vm_update_page_directory(struct amdgpu_device *adev,
&fence);
if (r)
goto error_free;
amdgpu_bo_fence(pd, fence, true);
fence_put(vm->page_directory_fence);
vm->page_directory_fence = fence_get(fence);
fence_put(fence);
}
@ -1291,6 +1294,8 @@ int amdgpu_vm_init(struct amdgpu_device *adev, struct amdgpu_vm *vm)
return -ENOMEM;
}
vm->page_directory_fence = NULL;
r = amdgpu_bo_create(adev, pd_size, align, true,
AMDGPU_GEM_DOMAIN_VRAM, 0,
NULL, &vm->page_directory);
@ -1339,6 +1344,7 @@ void amdgpu_vm_fini(struct amdgpu_device *adev, struct amdgpu_vm *vm)
kfree(vm->page_tables);
amdgpu_bo_unref(&vm->page_directory);
fence_put(vm->page_directory_fence);
for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
amdgpu_fence_unref(&vm->ids[i].flushed_updates);