From: mwezdeck maksym.wezdecki@collabora.co.uk
Pinning pages happens in virtio_gpu_object_shmem_init() function.
This ioctl allows to pin pages if it was not done earlier.
Signed-off-by: mwezdeck maksym.wezdecki@collabora.co.uk --- drivers/gpu/drm/virtio/virtgpu_drv.h | 5 +++- drivers/gpu/drm/virtio/virtgpu_ioctl.c | 11 ++++++++ drivers/gpu/drm/virtio/virtgpu_object.c | 34 +++++++++++++++++++++++++ include/uapi/drm/virtgpu_drm.h | 9 +++++++ 4 files changed, 58 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.h b/drivers/gpu/drm/virtio/virtgpu_drv.h index e0265fe74aa5..232933919b91 100644 --- a/drivers/gpu/drm/virtio/virtgpu_drv.h +++ b/drivers/gpu/drm/virtio/virtgpu_drv.h @@ -278,7 +278,7 @@ struct virtio_gpu_fpriv { };
/* virtgpu_ioctl.c */ -#define DRM_VIRTIO_NUM_IOCTLS 12 +#define DRM_VIRTIO_NUM_IOCTLS 13 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);
@@ -455,6 +455,9 @@ int virtio_gpu_object_create(struct virtio_gpu_device *vgdev, struct virtio_gpu_object **bo_ptr, struct virtio_gpu_fence *fence);
+int virtio_gpu_object_pin(struct drm_file *file, + struct virtio_gpu_device *vgdev, uint32_t handle); + bool virtio_gpu_is_shmem(struct virtio_gpu_object *bo);
int virtio_gpu_resource_id_get(struct virtio_gpu_device *vgdev, diff --git a/drivers/gpu/drm/virtio/virtgpu_ioctl.c b/drivers/gpu/drm/virtio/virtgpu_ioctl.c index 0007e423d885..f6a3a760c32d 100644 --- a/drivers/gpu/drm/virtio/virtgpu_ioctl.c +++ b/drivers/gpu/drm/virtio/virtgpu_ioctl.c @@ -836,6 +836,14 @@ static int virtio_gpu_context_init_ioctl(struct drm_device *dev, return ret; }
+static int virtio_gpu_pin_ioctl(struct drm_device *dev, void *data, + struct drm_file *file) +{ + struct virtio_gpu_device *vgdev = dev->dev_private; + struct drm_virtgpu_pin *virtio_gpu_pin = data; + return virtio_gpu_object_pin(file, vgdev, virtio_gpu_pin->handle); +} + struct drm_ioctl_desc virtio_gpu_ioctls[DRM_VIRTIO_NUM_IOCTLS] = { DRM_IOCTL_DEF_DRV(VIRTGPU_MAP, virtio_gpu_map_ioctl, DRM_RENDER_ALLOW), @@ -875,4 +883,7 @@ struct drm_ioctl_desc virtio_gpu_ioctls[DRM_VIRTIO_NUM_IOCTLS] = {
DRM_IOCTL_DEF_DRV(VIRTGPU_CONTEXT_INIT, virtio_gpu_context_init_ioctl, DRM_RENDER_ALLOW), + + DRM_IOCTL_DEF_DRV(VIRTGPU_PIN, virtio_gpu_pin_ioctl, + DRM_RENDER_ALLOW), }; diff --git a/drivers/gpu/drm/virtio/virtgpu_object.c b/drivers/gpu/drm/virtio/virtgpu_object.c index f648b0e24447..064c50cb9846 100644 --- a/drivers/gpu/drm/virtio/virtgpu_object.c +++ b/drivers/gpu/drm/virtio/virtgpu_object.c @@ -280,3 +280,37 @@ int virtio_gpu_object_create(struct virtio_gpu_device *vgdev, drm_gem_shmem_free_object(&shmem_obj->base); return ret; } + +int virtio_gpu_object_pin(struct drm_file *file, + struct virtio_gpu_device *vgdev, uint32_t handle) +{ + int ret; + struct drm_gem_object *gem; + struct virtio_gpu_object *bo; + struct virtio_gpu_object_shmem *shmem; + struct virtio_gpu_mem_entry *ents; + unsigned int nents; + + gem = drm_gem_object_lookup(file, handle); + if (gem == NULL) + return -ENOENT; + + bo = gem_to_virtio_gpu_obj(gem); + if (bo == NULL) + return -ENOENT; + + shmem = to_virtio_gpu_shmem(bo); + if (shmem == NULL) + return -ENOENT; + + if (!shmem->pages) { + ret = virtio_gpu_object_shmem_init(vgdev, bo, &ents, &nents); + if (ret != 0) { + return -EFAULT; + } + + virtio_gpu_object_attach(vgdev, bo, ents, nents); + } + + return 0; +} diff --git a/include/uapi/drm/virtgpu_drm.h b/include/uapi/drm/virtgpu_drm.h index a13e20cc66b4..bb661d53c0e9 100644 --- a/include/uapi/drm/virtgpu_drm.h +++ b/include/uapi/drm/virtgpu_drm.h @@ -48,6 +48,7 @@ extern "C" { #define DRM_VIRTGPU_GET_CAPS 0x09 #define DRM_VIRTGPU_RESOURCE_CREATE_BLOB 0x0a #define DRM_VIRTGPU_CONTEXT_INIT 0x0b +#define DRM_VIRTGPU_PIN 0x0c
#define VIRTGPU_EXECBUF_FENCE_FD_IN 0x01 #define VIRTGPU_EXECBUF_FENCE_FD_OUT 0x02 @@ -196,6 +197,10 @@ struct drm_virtgpu_context_init { __u64 ctx_set_params; };
+struct drm_virtgpu_pin { + __u32 handle; +}; + #define DRM_IOCTL_VIRTGPU_MAP \ DRM_IOWR(DRM_COMMAND_BASE + DRM_VIRTGPU_MAP, struct drm_virtgpu_map)
@@ -239,6 +244,10 @@ struct drm_virtgpu_context_init { DRM_IOWR(DRM_COMMAND_BASE + DRM_VIRTGPU_CONTEXT_INIT, \ struct drm_virtgpu_context_init)
+#define DRM_IOCTL_VIRTGPU_PIN \ + DRM_IOWR(DRM_COMMAND_BASE + DRM_VIRTGPU_PIN, \ + struct drm_virtgpu_pin) + #if defined(__cplusplus) } #endif