| /* 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_ */ |
