/* SPDX-License-Identifier: MIT *//****************************************************************************** * console.h * * Console I/O interface for Xen guest OSes. * * Copyright (c) 2005, Keir Fraser */ #ifndef __XEN_PUBLIC_IO_CONSOLE_H__#define __XEN_PUBLIC_IO_CONSOLE_H__ typedef uint32_t XENCONS_RING_IDX; #define MASK_XENCONS_IDX(idx, ring) ((idx) & (sizeof(ring)-1)) struct xencons_interface {    char in[1024];    char out[2048];    XENCONS_RING_IDX in_cons, in_prod;    XENCONS_RING_IDX out_cons, out_prod;/* * Flag values signaling from backend to frontend whether the console is * connected.  i.e. Whether it will be serviced and emptied. * * The flag starts as disconnected. */#define XENCONSOLE_DISCONNECTED 1/* * The flag is set to connected when the backend connects and the console * will be serviced. */#define XENCONSOLE_CONNECTED    0    uint8_t connection;}; #endif /* __XEN_PUBLIC_IO_CONSOLE_H__ */