mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-15 05:46:47 +07:00
6be3ffaa0e
Fixes build after recent IOMMU-related changes, mustly by adding more stubs. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
92 lines
2.5 KiB
C
92 lines
2.5 KiB
C
#include <linux/virtio_byteorder.h>
|
|
#include <linux/virtio.h>
|
|
#include <uapi/linux/virtio_config.h>
|
|
|
|
/*
|
|
* __virtio_test_bit - helper to test feature bits. For use by transports.
|
|
* Devices should normally use virtio_has_feature,
|
|
* which includes more checks.
|
|
* @vdev: the device
|
|
* @fbit: the feature bit
|
|
*/
|
|
static inline bool __virtio_test_bit(const struct virtio_device *vdev,
|
|
unsigned int fbit)
|
|
{
|
|
return vdev->features & (1ULL << fbit);
|
|
}
|
|
|
|
/**
|
|
* __virtio_set_bit - helper to set feature bits. For use by transports.
|
|
* @vdev: the device
|
|
* @fbit: the feature bit
|
|
*/
|
|
static inline void __virtio_set_bit(struct virtio_device *vdev,
|
|
unsigned int fbit)
|
|
{
|
|
vdev->features |= (1ULL << fbit);
|
|
}
|
|
|
|
/**
|
|
* __virtio_clear_bit - helper to clear feature bits. For use by transports.
|
|
* @vdev: the device
|
|
* @fbit: the feature bit
|
|
*/
|
|
static inline void __virtio_clear_bit(struct virtio_device *vdev,
|
|
unsigned int fbit)
|
|
{
|
|
vdev->features &= ~(1ULL << fbit);
|
|
}
|
|
|
|
#define virtio_has_feature(dev, feature) \
|
|
(__virtio_test_bit((dev), feature))
|
|
|
|
/**
|
|
* virtio_has_iommu_quirk - determine whether this device has the iommu quirk
|
|
* @vdev: the device
|
|
*/
|
|
static inline bool virtio_has_iommu_quirk(const struct virtio_device *vdev)
|
|
{
|
|
/*
|
|
* Note the reverse polarity of the quirk feature (compared to most
|
|
* other features), this is for compatibility with legacy systems.
|
|
*/
|
|
return !virtio_has_feature(vdev, VIRTIO_F_IOMMU_PLATFORM);
|
|
}
|
|
|
|
static inline bool virtio_is_little_endian(struct virtio_device *vdev)
|
|
{
|
|
return virtio_has_feature(vdev, VIRTIO_F_VERSION_1) ||
|
|
virtio_legacy_is_little_endian();
|
|
}
|
|
|
|
/* Memory accessors */
|
|
static inline u16 virtio16_to_cpu(struct virtio_device *vdev, __virtio16 val)
|
|
{
|
|
return __virtio16_to_cpu(virtio_is_little_endian(vdev), val);
|
|
}
|
|
|
|
static inline __virtio16 cpu_to_virtio16(struct virtio_device *vdev, u16 val)
|
|
{
|
|
return __cpu_to_virtio16(virtio_is_little_endian(vdev), val);
|
|
}
|
|
|
|
static inline u32 virtio32_to_cpu(struct virtio_device *vdev, __virtio32 val)
|
|
{
|
|
return __virtio32_to_cpu(virtio_is_little_endian(vdev), val);
|
|
}
|
|
|
|
static inline __virtio32 cpu_to_virtio32(struct virtio_device *vdev, u32 val)
|
|
{
|
|
return __cpu_to_virtio32(virtio_is_little_endian(vdev), val);
|
|
}
|
|
|
|
static inline u64 virtio64_to_cpu(struct virtio_device *vdev, __virtio64 val)
|
|
{
|
|
return __virtio64_to_cpu(virtio_is_little_endian(vdev), val);
|
|
}
|
|
|
|
static inline __virtio64 cpu_to_virtio64(struct virtio_device *vdev, u64 val)
|
|
{
|
|
return __cpu_to_virtio64(virtio_is_little_endian(vdev), val);
|
|
}
|