Commit cec9c5e3 authored by Michael S. Tsirkin's avatar Michael S. Tsirkin
Browse files

tools/virtio: switch to kernel's virtio_config.h 



Drops stubs in virtio_config.h, use the kernel's version instead - we
are now activly developing it, so the stub became too hard to maintain.

Message-ID: <8e5c85dc8aad001f161f7e2d8799ffbccfc31381.1764873799.git.mst@redhat.com>
Acked-by: default avatarJason Wang <jasowang@redhat.com>
Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
parent b0fe545b

tools/virtio/linux/virtio_config.h

+1 −101
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0 */

#ifndef LINUX_VIRTIO_CONFIG_H

#define LINUX_VIRTIO_CONFIG_H

#include <linux/virtio_byteorder.h>

#include <linux/virtio.h>

#include <uapi/linux/virtio_config.h>



struct virtio_config_ops {

	int (*disable_vq_and_reset)(struct virtqueue *vq);

	int (*enable_vq_after_reset)(struct virtqueue *vq);

};



/*

 * __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_dma_quirk - determine whether this device has the DMA quirk

 * @vdev: the device

 */

static inline bool virtio_has_dma_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_ACCESS_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);

}



#endif
 
#include "../../include/linux/virtio_config.h"