mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2025-10-31 08:44:41 +00:00
80390df8b2
This fixes build for the vringh test: [linux]$ make -C tools/virtio/ make: Entering directory `/home/mst/scm/linux/tools/virtio' cc -g -O2 -Wall -I. -I ../../usr/include/ -Wno-pointer-sign -fno-strict-overflow -fno-strict-aliasing -fno-common -MMD -U_FORTIFY_SOURCE -c -o vringh.o ../../drivers/vhost/vringh.c ../../drivers/vhost/vringh.c:1010:16: error: expected declaration specifiers or ‘...’ before string constant Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
87 lines
2.4 KiB
C
87 lines
2.4 KiB
C
#ifndef LINUX_VIRTIO_H
|
|
#define LINUX_VIRTIO_H
|
|
#include <linux/scatterlist.h>
|
|
#include <linux/kernel.h>
|
|
|
|
/* TODO: empty stubs for now. Broken but enough for virtio_ring.c */
|
|
#define list_add_tail(a, b) do {} while (0)
|
|
#define list_del(a) do {} while (0)
|
|
|
|
#define BIT_WORD(nr) ((nr) / BITS_PER_LONG)
|
|
#define BITS_PER_BYTE 8
|
|
#define BITS_PER_LONG (sizeof(long) * BITS_PER_BYTE)
|
|
#define BIT_MASK(nr) (1UL << ((nr) % BITS_PER_LONG))
|
|
|
|
/* TODO: Not atomic as it should be:
|
|
* we don't use this for anything important. */
|
|
static inline void clear_bit(int nr, volatile unsigned long *addr)
|
|
{
|
|
unsigned long mask = BIT_MASK(nr);
|
|
unsigned long *p = ((unsigned long *)addr) + BIT_WORD(nr);
|
|
|
|
*p &= ~mask;
|
|
}
|
|
|
|
static inline int test_bit(int nr, const volatile unsigned long *addr)
|
|
{
|
|
return 1UL & (addr[BIT_WORD(nr)] >> (nr & (BITS_PER_LONG-1)));
|
|
}
|
|
/* end of stubs */
|
|
|
|
struct virtio_device {
|
|
void *dev;
|
|
unsigned long features[1];
|
|
};
|
|
|
|
struct virtqueue {
|
|
/* TODO: commented as list macros are empty stubs for now.
|
|
* Broken but enough for virtio_ring.c
|
|
* struct list_head list; */
|
|
void (*callback)(struct virtqueue *vq);
|
|
const char *name;
|
|
struct virtio_device *vdev;
|
|
unsigned int index;
|
|
unsigned int num_free;
|
|
void *priv;
|
|
};
|
|
|
|
/* Interfaces exported by virtio_ring. */
|
|
int virtqueue_add_sgs(struct virtqueue *vq,
|
|
struct scatterlist *sgs[],
|
|
unsigned int out_sgs,
|
|
unsigned int in_sgs,
|
|
void *data,
|
|
gfp_t gfp);
|
|
|
|
int virtqueue_add_outbuf(struct virtqueue *vq,
|
|
struct scatterlist sg[], unsigned int num,
|
|
void *data,
|
|
gfp_t gfp);
|
|
|
|
int virtqueue_add_inbuf(struct virtqueue *vq,
|
|
struct scatterlist sg[], unsigned int num,
|
|
void *data,
|
|
gfp_t gfp);
|
|
|
|
void virtqueue_kick(struct virtqueue *vq);
|
|
|
|
void *virtqueue_get_buf(struct virtqueue *vq, unsigned int *len);
|
|
|
|
void virtqueue_disable_cb(struct virtqueue *vq);
|
|
|
|
bool virtqueue_enable_cb(struct virtqueue *vq);
|
|
bool virtqueue_enable_cb_delayed(struct virtqueue *vq);
|
|
|
|
void *virtqueue_detach_unused_buf(struct virtqueue *vq);
|
|
struct virtqueue *vring_new_virtqueue(unsigned int index,
|
|
unsigned int num,
|
|
unsigned int vring_align,
|
|
struct virtio_device *vdev,
|
|
bool weak_barriers,
|
|
void *pages,
|
|
void (*notify)(struct virtqueue *vq),
|
|
void (*callback)(struct virtqueue *vq),
|
|
const char *name);
|
|
void vring_del_virtqueue(struct virtqueue *vq);
|
|
|
|
#endif
|