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drm/virtio: Improve DMA API usage for shmem BOs

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DRM API requires the DRM's driver to be backed with the device that can
be used for generic DMA operations. The VirtIO-GPU device can't perform
DMA operations if it uses PCI transport because PCI device driver creates
a virtual VirtIO-GPU device that isn't associated with the PCI. Use PCI's
GPU device for the DRM's device instead of the VirtIO-GPU device and drop
DMA-related hacks from the VirtIO-GPU driver.

Signed-off-by: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20220630200726.1884320-8-dmitry.osipenko@collabora.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Dmitry Osipenko
2022-06-30 23:07:24 +03:00
committed by Gerd Hoffmann
parent e7fef09233
commit b5c9ed70d1
5 changed files with 32 additions and 99 deletions
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5
drivers/gpu/drm/virtio/virtgpu_drv.h
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@@ -101,8 +101,6 @@ struct virtio_gpu_object {
struct virtio_gpu_object_shmem {
struct virtio_gpu_object base;
struct sg_table *pages;
uint32_t mapped;
};
struct virtio_gpu_object_vram {
@@ -215,7 +213,6 @@ struct virtio_gpu_drv_cap_cache {
};
struct virtio_gpu_device {
struct device *dev;
struct drm_device *ddev;
struct virtio_device *vdev;
@@ -283,7 +280,7 @@ extern struct drm_ioctl_desc virtio_gpu_ioctls[DRM_VIRTIO_NUM_IOCTLS];
void virtio_gpu_create_context(struct drm_device *dev, struct drm_file *file);
/* virtgpu_kms.c */
int virtio_gpu_init(struct drm_device *dev);
int virtio_gpu_init(struct virtio_device *vdev, struct drm_device *dev);
void virtio_gpu_deinit(struct drm_device *dev);
void virtio_gpu_release(struct drm_device *dev);
int virtio_gpu_driver_open(struct drm_device *dev, struct drm_file *file);