xref: /openbmc/qemu/include/hw/xen/interface/io/console.h (revision 50c88402ca599e577f025e78a4380431be2b3f6d)

/******************************************************************************
 * console.h
 *
 * Console I/O interface for Xen guest OSes.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to
 * deal in the Software without restriction, including without limitation the
 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
 * sell copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 *
 * 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;
};

#ifdef XEN_WANT_FLEX_CONSOLE_RING
#include "ring.h"
DEFINE_XEN_FLEX_RING(xencons);
#endif

#endif /* __XEN_PUBLIC_IO_CONSOLE_H__ */

/*
 * Local variables:
 * mode: C
 * c-file-style: "BSD"
 * c-basic-offset: 4
 * tab-width: 4
 * indent-tabs-mode: nil
 * End:
 */