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[virtio] Split virtio-net.c into several files.

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Signed-off-by: Laurent Vivier <Laurent.Vivier@bull.net>
This commit is contained in:
Laurent Vivier
2008-11-19 17:28:29 +01:00
committed by Michael Brown
parent 14a739ba6a
commit b48f37e69a
5 changed files with 252 additions and 207 deletions
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3
src/include/gpxe/virtio-pci.h
View File

@@ -91,4 +91,7 @@ static inline void vp_del_vq(unsigned int ioaddr, int queue_index)
outl(0, ioaddr + VIRTIO_PCI_QUEUE_PFN);
}
int vp_find_vq(unsigned int ioaddr, int queue_index,
struct vring_virtqueue *vq);
#endif /* _VIRTIO_PCI_H_ */

53
src/include/gpxe/virtio-ring.h
View File

@@ -58,6 +58,24 @@ struct vring {
struct vring_used *used;
};
#define vring_size(num) \
(((((sizeof(struct vring_desc) * num) + \
(sizeof(struct vring_avail) + sizeof(u16) * num)) \
+ PAGE_MASK) & ~PAGE_MASK) + \
(sizeof(struct vring_used) + sizeof(struct vring_used_elem) * num))
typedef unsigned char virtio_queue_t[PAGE_MASK + vring_size(MAX_QUEUE_NUM)];
struct vring_virtqueue {
virtio_queue_t queue;
struct vring vring;
u16 free_head;
u16 last_used_idx;
u16 vdata[MAX_QUEUE_NUM];
/* PCI */
int queue_index;
};
struct vring_list {
char *addr;
unsigned int length;
@@ -90,10 +108,35 @@ static inline void vring_init(struct vring *vr,
vr->desc[i].next = 0;
}
#define vring_size(num) \
(((((sizeof(struct vring_desc) * num) + \
(sizeof(struct vring_avail) + sizeof(u16) * num)) \
+ PAGE_MASK) & ~PAGE_MASK) + \
(sizeof(struct vring_used) + sizeof(struct vring_used_elem) * num))
static inline void vring_enable_cb(struct vring_virtqueue *vq)
{
vq->vring.avail->flags &= ~VRING_AVAIL_F_NO_INTERRUPT;
}
static inline void vring_disable_cb(struct vring_virtqueue *vq)
{
vq->vring.avail->flags |= VRING_AVAIL_F_NO_INTERRUPT;
}
/*
* vring_more_used
*
* is there some used buffers ?
*
*/
static inline int vring_more_used(struct vring_virtqueue *vq)
{
wmb();
return vq->last_used_idx != vq->vring.used->idx;
}
void vring_detach(struct vring_virtqueue *vq, unsigned int head);
int vring_get_buf(struct vring_virtqueue *vq, unsigned int *len);
void vring_add_buf(struct vring_virtqueue *vq, struct vring_list list[],
unsigned int out, unsigned int in,
int index, int num_added);
void vring_kick(unsigned int ioaddr, struct vring_virtqueue *vq, int num_added);
#endif /* _VIRTIO_RING_H_ */