drm/radeon: further cleanup vm flushing & fencing

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index 40ab8a2..644d922 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -2804,6 +2804,9 @@ int radeon_vm_alloc_pt(struct radeon_device *rdev, struct radeon_vm *vm);
 void radeon_vm_add_to_lru(struct radeon_device *rdev, struct radeon_vm *vm);
 struct radeon_fence *radeon_vm_grab_id(struct radeon_device *rdev,
                                       struct radeon_vm *vm, int ring);
+void radeon_vm_flush(struct radeon_device *rdev,
+                     struct radeon_vm *vm,
+                     int ring);
 void radeon_vm_fence(struct radeon_device *rdev,
                     struct radeon_vm *vm,
                     struct radeon_fence *fence);

diff --git a/drivers/gpu/drm/radeon/radeon_cs.c b/drivers/gpu/drm/radeon/radeon_cs.c
index 5abae40..f92df2e 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_cs.c
+++ b/drivers/gpu/drm/radeon/radeon_cs.c
@@ -511,10 +511,6 @@ static int radeon_cs_ib_vm_chunk(struct radeon_device *rdev,
                r = radeon_ib_schedule(rdev, &parser->ib, NULL);
        }
 
-       if (!r) {
-               radeon_vm_fence(rdev, vm, parser->ib.fence);
-       }
-
 out:
        radeon_vm_add_to_lru(rdev, vm);
        mutex_unlock(&vm->mutex);

diff --git a/drivers/gpu/drm/radeon/radeon_ring.c b/drivers/gpu/drm/radeon/radeon_ring.c
index fa14011..665591a 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_ring.c
+++ b/drivers/gpu/drm/radeon/radeon_ring.c
@@ -153,11 +153,9 @@ int radeon_ib_schedule(struct radeon_device *rdev, struct radeon_ib *ib,
                return r;
        }
 
-       /* if we can't remember our last VM flush then flush now! */
-       /* XXX figure out why we have to flush for every IB */
-       if (ib->vm /*&& !ib->vm->last_flush*/) {
-               radeon_ring_vm_flush(rdev, ib->ring, ib->vm);
-       }
+       if (ib->vm)
+               radeon_vm_flush(rdev, ib->vm, ib->ring);
+
        if (const_ib) {
                radeon_ring_ib_execute(rdev, const_ib->ring, const_ib);
                radeon_semaphore_free(rdev, &const_ib->semaphore, NULL);
@@ -172,10 +170,10 @@ int radeon_ib_schedule(struct radeon_device *rdev, struct radeon_ib *ib,
        if (const_ib) {
                const_ib->fence = radeon_fence_ref(ib->fence);
        }
-       /* we just flushed the VM, remember that */
-       if (ib->vm && !ib->vm->last_flush) {
-               ib->vm->last_flush = radeon_fence_ref(ib->fence);
-       }
+
+       if (ib->vm)
+               radeon_vm_fence(rdev, ib->vm, ib->fence);
+
        radeon_ring_unlock_commit(rdev, ring);
        return 0;
 }

diff --git a/drivers/gpu/drm/radeon/radeon_vm.c b/drivers/gpu/drm/radeon/radeon_vm.c
index 433b1eb..5160176 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_vm.c
+++ b/drivers/gpu/drm/radeon/radeon_vm.c
@@ -378,6 +378,27 @@ struct radeon_fence *radeon_vm_grab_id(struct radeon_device *rdev,
        return NULL;
 }
 
+/**
+ * radeon_vm_flush - hardware flush the vm
+ *
+ * @rdev: radeon_device pointer
+ * @vm: vm we want to flush
+ * @ring: ring to use for flush
+ *
+ * Flush the vm (cayman+).
+ *
+ * Global and local mutex must be locked!
+ */
+void radeon_vm_flush(struct radeon_device *rdev,
+                    struct radeon_vm *vm,
+                    int ring)
+{
+       /* if we can't remember our last VM flush then flush now! */
+       /* XXX figure out why we have to flush all the time */
+       if (!vm->last_flush || true)
+               radeon_ring_vm_flush(rdev, ring, vm);
+}
+
 /**
  * radeon_vm_fence - remember fence for vm
  *
@@ -394,14 +415,18 @@ void radeon_vm_fence(struct radeon_device *rdev,
                     struct radeon_vm *vm,
                     struct radeon_fence *fence)
 {
-       radeon_fence_unref(&rdev->vm_manager.active[vm->id]);
-       rdev->vm_manager.active[vm->id] = radeon_fence_ref(fence);
-
        radeon_fence_unref(&vm->fence);
        vm->fence = radeon_fence_ref(fence);
 
+       radeon_fence_unref(&rdev->vm_manager.active[vm->id]);
+       rdev->vm_manager.active[vm->id] = radeon_fence_ref(fence);
+
        radeon_fence_unref(&vm->last_id_use);
        vm->last_id_use = radeon_fence_ref(fence);
+
+        /* we just flushed the VM, remember that */
+        if (!vm->last_flush)
+                vm->last_flush = radeon_fence_ref(fence);
 }
 
 /**