[PATCH 4/5] drm/amdgpu: allow direct submission of clears

[Christian König]

For handling PD/PT clears directly in the fault handler.

Signed-off-by: Christian König <christian.koe...@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
index a8ea7bf18cf6..a2d18fe46691 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
@@ -695,6 +695,7 @@ bool amdgpu_vm_ready(struct amdgpu_vm *vm)
  * @adev: amdgpu_device pointer
  * @vm: VM to clear BO from
  * @bo: BO to clear
+ * @direct: use a direct update
  *
  * Root PD needs to be reserved when calling this.
  *
@@ -703,7 +704,8 @@ bool amdgpu_vm_ready(struct amdgpu_vm *vm)
  */
 static int amdgpu_vm_clear_bo(struct amdgpu_device *adev,
                              struct amdgpu_vm *vm,
-                             struct amdgpu_bo *bo)
+                             struct amdgpu_bo *bo,
+                             bool direct)
 {
        struct ttm_operation_ctx ctx = { true, false };
        unsigned level = adev->vm_manager.root_level;
@@ -762,6 +764,7 @@ static int amdgpu_vm_clear_bo(struct amdgpu_device *adev,
        memset(&params, 0, sizeof(params));
        params.adev = adev;
        params.vm = vm;
+       params.direct = direct;
 
        r = vm->update_funcs->prepare(&params, AMDGPU_FENCE_OWNER_KFD, NULL);
        if (r)
@@ -852,7 +855,8 @@ static void amdgpu_vm_bo_param(struct amdgpu_device *adev, 
struct amdgpu_vm *vm,
  */
 static int amdgpu_vm_alloc_pts(struct amdgpu_device *adev,
                               struct amdgpu_vm *vm,
-                              struct amdgpu_vm_pt_cursor *cursor)
+                              struct amdgpu_vm_pt_cursor *cursor,
+                              bool direct)
 {
        struct amdgpu_vm_pt *entry = cursor->entry;
        struct amdgpu_bo_param bp;
@@ -885,7 +889,7 @@ static int amdgpu_vm_alloc_pts(struct amdgpu_device *adev,
        pt->parent = amdgpu_bo_ref(cursor->parent->base.bo);
        amdgpu_vm_bo_base_init(&entry->base, vm, pt);
 
-       r = amdgpu_vm_clear_bo(adev, vm, pt);
+       r = amdgpu_vm_clear_bo(adev, vm, pt, direct);
        if (r)
                goto error_free_pt;
 
@@ -1395,7 +1399,8 @@ static int amdgpu_vm_update_ptes(struct 
amdgpu_vm_update_params *params,
                uint64_t incr, entry_end, pe_start;
                struct amdgpu_bo *pt;
 
-               r = amdgpu_vm_alloc_pts(params->adev, params->vm, &cursor);
+               r = amdgpu_vm_alloc_pts(params->adev, params->vm, &cursor,
+                                       params->direct);
                if (r)
                        return r;
 
@@ -2733,7 +2738,7 @@ int amdgpu_vm_init(struct amdgpu_device *adev, struct 
amdgpu_vm *vm,
 
        amdgpu_vm_bo_base_init(&vm->root.base, vm, root);
 
-       r = amdgpu_vm_clear_bo(adev, vm, root);
+       r = amdgpu_vm_clear_bo(adev, vm, root, false);
        if (r)
                goto error_unreserve;
 
@@ -2853,7 +2858,7 @@ int amdgpu_vm_make_compute(struct amdgpu_device *adev, 
struct amdgpu_vm *vm, uns
         */
        if (pte_support_ats != vm->pte_support_ats) {
                vm->pte_support_ats = pte_support_ats;
-               r = amdgpu_vm_clear_bo(adev, vm, vm->root.base.bo);
+               r = amdgpu_vm_clear_bo(adev, vm, vm->root.base.bo, false);
                if (r)
                        goto free_idr;
        }
-- 
2.17.1

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