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drm/amdgpu: add amdgpu_vm_pt_parent helper

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Add a function to get the parent of a PD/PT.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Christian König 2018-08-30 15:55:54 +02:00 • committed by Alex Deucher
parent 7893499e30
commit ba79fde47b
1 changed files with 23 additions and 13 deletions
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36
drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
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@ -337,6 +337,24 @@ static void amdgpu_vm_bo_base_init(struct amdgpu_vm_bo_base *base,
amdgpu_vm_bo_evicted(base);
}
/**
* amdgpu_vm_pt_parent - get the parent page directory
*
* @pt: child page table
*
* Helper to get the parent entry for the child page table. NULL if we are at
* the root page directory.
*/
static struct amdgpu_vm_pt *amdgpu_vm_pt_parent(struct amdgpu_vm_pt *pt)
{
struct amdgpu_bo *parent = pt->base.bo->parent;
if (!parent)
return NULL;
return list_first_entry(&parent->va, struct amdgpu_vm_pt, base.bo_list);
}
/**
* amdgpu_vm_get_pd_bo - add the VM PD to a validation list
*
@ -1206,24 +1224,16 @@ restart:
}
while (!list_empty(&vm->relocated)) {
struct amdgpu_vm_bo_base *bo_base, *parent;
struct amdgpu_vm_pt *pt, *entry;
struct amdgpu_bo *bo;
bo_base = list_first_entry(&vm->relocated,
struct amdgpu_vm_bo_base,
vm_status);
amdgpu_vm_bo_idle(bo_base);
entry = list_first_entry(&vm->relocated, struct amdgpu_vm_pt,
base.vm_status);
amdgpu_vm_bo_idle(&entry->base);
bo = bo_base->bo->parent;
if (!bo)
pt = amdgpu_vm_pt_parent(entry);
if (!pt)
continue;
parent = list_first_entry(&bo->va, struct amdgpu_vm_bo_base,
bo_list);
pt = container_of(parent, struct amdgpu_vm_pt, base);
entry = container_of(bo_base, struct amdgpu_vm_pt, base);
amdgpu_vm_update_pde(&params, vm, pt, entry);
if (!vm->use_cpu_for_update &&