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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef _UAPI_PAPR_HVPIPE_H_
#define _UAPI_PAPR_HVPIPE_H_
#include <linux/types.h>
#include <asm/ioctl.h>
#include <asm/papr-miscdev.h>
/*
* This header is included in payload between OS and the user
* space.
* flags: OS notifies the user space whether the hvpipe is
* closed or the buffer has the payload.
*/
struct papr_hvpipe_hdr {
__u8 version;
__u8 reserved[3];
__u32 flags;
__u8 reserved2[40];
};
/*
* ioctl for /dev/papr-hvpipe
*/
#define PAPR_HVPIPE_IOC_CREATE_HANDLE _IOW(PAPR_MISCDEV_IOC_ID, 9, __u32)
/*
* hvpipe_hdr flags used for read()
*/
#define HVPIPE_MSG_AVAILABLE 0x01 /* Payload is available */
#define HVPIPE_LOST_CONNECTION 0x02 /* Pipe connection is closed/unavailable */
#endif /* _UAPI_PAPR_HVPIPE_H_ */
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