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virtio: Add virtio_gpu_object_kunmap() 

Implement a virtio_gpu_object_kunmap() to unmap the kernel
mapping, and use it in the TTM object destroy path.

Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20180925161606.17980-2-ezequiel@collabora.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Ezequiel Garcia 2018-09-25 18:16:04 +02:00 committed by Gerd Hoffmann
parent 9dd3cb243d
commit 02c87cabd6
2 changed files with 9 additions and 0 deletions
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1
drivers/gpu/drm/virtio/virtgpu_drv.h
View File

@ -363,6 +363,7 @@ void virtio_gpu_fence_event_process(struct virtio_gpu_device *vdev,
int virtio_gpu_object_create(struct virtio_gpu_device *vgdev,
unsigned long size, bool kernel, bool pinned,
struct virtio_gpu_object **bo_ptr);
void virtio_gpu_object_kunmap(struct virtio_gpu_object *bo);
int virtio_gpu_object_kmap(struct virtio_gpu_object *bo, void **ptr);
int virtio_gpu_object_get_sg_table(struct virtio_gpu_device *qdev,
struct virtio_gpu_object *bo);

8
drivers/gpu/drm/virtio/virtgpu_object.c
View File

@ -37,6 +37,8 @@ static void virtio_gpu_ttm_bo_destroy(struct ttm_buffer_object *tbo)
virtio_gpu_cmd_unref_resource(vgdev, bo->hw_res_handle);
if (bo->pages)
virtio_gpu_object_free_sg_table(bo);
if (bo->vmap)
virtio_gpu_object_kunmap(bo);
drm_gem_object_release(&bo->gem_base);
kfree(bo);
}
@ -99,6 +101,12 @@ int virtio_gpu_object_create(struct virtio_gpu_device *vgdev,
return 0;
}
void virtio_gpu_object_kunmap(struct virtio_gpu_object *bo)
{
bo->vmap = NULL;
ttm_bo_kunmap(&bo->kmap);
}
int virtio_gpu_object_kmap(struct virtio_gpu_object *bo, void **ptr)
{
bool is_iomem;