write in 30M

hc

2024-02-20 ea08eeccae9297f7aabd2ef7f0c2517ac4549acc

 kernel/include/linux/virtio.h
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@@ -9,7 +9,6 @@
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 #include <linux/device.h>
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 #include <linux/mod_devicetable.h>
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 #include <linux/gfp.h>
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-#include <linux/vringh.h>
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 /**
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  * virtqueue - a queue to register buffers for sending or receiving.
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@@ -90,23 +89,6 @@
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 dma_addr_t virtqueue_get_avail_addr(struct virtqueue *vq);
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 dma_addr_t virtqueue_get_used_addr(struct virtqueue *vq);
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-/*
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- * Legacy accessors -- in almost all cases, these are the wrong functions
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- * to use.
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- */
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-static inline void *virtqueue_get_desc(struct virtqueue *vq)
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-{
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-	return virtqueue_get_vring(vq)->desc;
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-}
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-static inline void *virtqueue_get_avail(struct virtqueue *vq)
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-{
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-	return virtqueue_get_vring(vq)->avail;
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-}
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-static inline void *virtqueue_get_used(struct virtqueue *vq)
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-{
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-	return virtqueue_get_vring(vq)->used;
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-}
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-
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 /**
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  * virtio_device - representation of a device using virtio
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  * @index: unique position on the virtio bus
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@@ -145,18 +127,20 @@
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 void virtio_add_status(struct virtio_device *dev, unsigned int status);
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 int register_virtio_device(struct virtio_device *dev);
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 void unregister_virtio_device(struct virtio_device *dev);
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+bool is_virtio_device(struct device *dev);
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 void virtio_break_device(struct virtio_device *dev);
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 void virtio_config_changed(struct virtio_device *dev);
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 void virtio_config_disable(struct virtio_device *dev);
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 void virtio_config_enable(struct virtio_device *dev);
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-int virtio_finalize_features(struct virtio_device *dev);
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 #ifdef CONFIG_PM_SLEEP
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 int virtio_device_freeze(struct virtio_device *dev);
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 int virtio_device_restore(struct virtio_device *dev);
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 #endif
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+size_t virtio_max_dma_size(struct virtio_device *vdev);
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+
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 #define virtio_device_for_each_vq(vdev, vq) \
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 	list_for_each_entry(vq, &vdev->vqs, list)
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