Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) #ifndef LINUX_VIRTIO_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) #define LINUX_VIRTIO_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) #include <linux/scatterlist.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) #include <linux/spinlock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) struct device {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) 	void *parent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) struct virtio_device {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 	struct device dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 	u64 features;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 	struct list_head vqs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 	spinlock_t vqs_list_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) struct virtqueue {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 	struct list_head list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	void (*callback)(struct virtqueue *vq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	const char *name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	struct virtio_device *vdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)         unsigned int index;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)         unsigned int num_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	void *priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) /* Interfaces exported by virtio_ring. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) int virtqueue_add_sgs(struct virtqueue *vq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 		      struct scatterlist *sgs[],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 		      unsigned int out_sgs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 		      unsigned int in_sgs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 		      void *data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 		      gfp_t gfp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) int virtqueue_add_outbuf(struct virtqueue *vq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 			 struct scatterlist sg[], unsigned int num,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 			 void *data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 			 gfp_t gfp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) int virtqueue_add_inbuf(struct virtqueue *vq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 			struct scatterlist sg[], unsigned int num,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 			void *data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 			gfp_t gfp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) bool virtqueue_kick(struct virtqueue *vq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) void *virtqueue_get_buf(struct virtqueue *vq, unsigned int *len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) void virtqueue_disable_cb(struct virtqueue *vq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) bool virtqueue_enable_cb(struct virtqueue *vq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) bool virtqueue_enable_cb_delayed(struct virtqueue *vq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) void *virtqueue_detach_unused_buf(struct virtqueue *vq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) struct virtqueue *vring_new_virtqueue(unsigned int index,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 				      unsigned int num,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 				      unsigned int vring_align,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 				      struct virtio_device *vdev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 				      bool weak_barriers,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 				      bool ctx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 				      void *pages,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 				      bool (*notify)(struct virtqueue *vq),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 				      void (*callback)(struct virtqueue *vq),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 				      const char *name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) void vring_del_virtqueue(struct virtqueue *vq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) #endif