drm/radeon: fix VMID use tracking

Otherwise we allocate a new VMID on nearly every submit.

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

diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index c5519ca..4a8ac1c 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -867,6 +867,8 @@ struct radeon_vm {
        struct radeon_fence             *fence;
        /* last flush or NULL if we still need to flush */
        struct radeon_fence             *last_flush;
+       /* last use of vmid */
+       struct radeon_fence             *last_id_use;
 };
 
 struct radeon_vm_manager {

diff --git a/drivers/gpu/drm/radeon/radeon_gart.c b/drivers/gpu/drm/radeon/radeon_gart.c
index 96e4400..0e9143b 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_gart.c
+++ b/drivers/gpu/drm/radeon/radeon_gart.c
@@ -713,7 +713,7 @@ struct radeon_fence *radeon_vm_grab_id(struct radeon_device *rdev,
        unsigned i;
 
        /* check if the id is still valid */
-       if (vm->fence && vm->fence == rdev->vm_manager.active[vm->id])
+       if (vm->last_id_use && vm->last_id_use == rdev->vm_manager.active[vm->id])
                return NULL;
 
        /* we definately need to flush */
@@ -769,6 +769,9 @@ void radeon_vm_fence(struct radeon_device *rdev,
 
        radeon_fence_unref(&vm->fence);
        vm->fence = radeon_fence_ref(fence);
+
+       radeon_fence_unref(&vm->last_id_use);
+       vm->last_id_use = radeon_fence_ref(fence);
 }
 
 /**
@@ -1303,6 +1306,8 @@ void radeon_vm_init(struct radeon_device *rdev, struct radeon_vm *vm)
 {
        vm->id = 0;
        vm->fence = NULL;
+       vm->last_flush = NULL;
+       vm->last_id_use = NULL;
        mutex_init(&vm->mutex);
        INIT_LIST_HEAD(&vm->list);
        INIT_LIST_HEAD(&vm->va);
@@ -1341,5 +1346,6 @@ void radeon_vm_fini(struct radeon_device *rdev, struct radeon_vm *vm)
        }
        radeon_fence_unref(&vm->fence);
        radeon_fence_unref(&vm->last_flush);
+       radeon_fence_unref(&vm->last_id_use);
        mutex_unlock(&vm->mutex);
 }