mirror of https://github.com/torvalds/linux.git
38 lines
957 B
C
38 lines
957 B
C
/* 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__ */
|