1#include <linux/virtio_byteorder.h>
2#include <linux/virtio.h>
3#include <uapi/linux/virtio_config.h>
4
5/*
6 * __virtio_test_bit - helper to test feature bits. For use by transports.
7 *                     Devices should normally use virtio_has_feature,
8 *                     which includes more checks.
9 * @vdev: the device
10 * @fbit: the feature bit
11 */
12static inline bool __virtio_test_bit(const struct virtio_device *vdev,
13				     unsigned int fbit)
14{
15	return vdev->features & (1ULL << fbit);
16}
17
18/**
19 * __virtio_set_bit - helper to set feature bits. For use by transports.
20 * @vdev: the device
21 * @fbit: the feature bit
22 */
23static inline void __virtio_set_bit(struct virtio_device *vdev,
24				    unsigned int fbit)
25{
26	vdev->features |= (1ULL << fbit);
27}
28
29/**
30 * __virtio_clear_bit - helper to clear feature bits. For use by transports.
31 * @vdev: the device
32 * @fbit: the feature bit
33 */
34static inline void __virtio_clear_bit(struct virtio_device *vdev,
35				      unsigned int fbit)
36{
37	vdev->features &= ~(1ULL << fbit);
38}
39
40#define virtio_has_feature(dev, feature) \
41	(__virtio_test_bit((dev), feature))
42
43static inline u16 virtio16_to_cpu(struct virtio_device *vdev, __virtio16 val)
44{
45	return __virtio16_to_cpu(virtio_has_feature(vdev, VIRTIO_F_VERSION_1), val);
46}
47
48static inline __virtio16 cpu_to_virtio16(struct virtio_device *vdev, u16 val)
49{
50	return __cpu_to_virtio16(virtio_has_feature(vdev, VIRTIO_F_VERSION_1), val);
51}
52
53static inline u32 virtio32_to_cpu(struct virtio_device *vdev, __virtio32 val)
54{
55	return __virtio32_to_cpu(virtio_has_feature(vdev, VIRTIO_F_VERSION_1), val);
56}
57
58static inline __virtio32 cpu_to_virtio32(struct virtio_device *vdev, u32 val)
59{
60	return __cpu_to_virtio32(virtio_has_feature(vdev, VIRTIO_F_VERSION_1), val);
61}
62
63static inline u64 virtio64_to_cpu(struct virtio_device *vdev, __virtio64 val)
64{
65	return __virtio64_to_cpu(virtio_has_feature(vdev, VIRTIO_F_VERSION_1), val);
66}
67
68static inline __virtio64 cpu_to_virtio64(struct virtio_device *vdev, u64 val)
69{
70	return __cpu_to_virtio64(virtio_has_feature(vdev, VIRTIO_F_VERSION_1), val);
71}
72
73