include/hw/xen/interface/io/console.h

   1 /******************************************************************************
   2  * console.h
   3  *
   4  * Console I/O interface for Xen guest OSes.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to
   8  * deal in the Software without restriction, including without limitation the
   9  * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
  10  * sell copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  19  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22  * DEALINGS IN THE SOFTWARE.
  23  *
  24  * Copyright (c) 2005, Keir Fraser
  25  */
  26
  27 #ifndef __XEN_PUBLIC_IO_CONSOLE_H__
  28 #define __XEN_PUBLIC_IO_CONSOLE_H__
  29
  30 typedef uint32_t XENCONS_RING_IDX;
  31
  32 #define MASK_XENCONS_IDX(idx, ring) ((idx) & (sizeof(ring)-1))
  33
  34 struct xencons_interface {
  35     char in[1024];
  36     char out[2048];
  37     XENCONS_RING_IDX in_cons, in_prod;
  38     XENCONS_RING_IDX out_cons, out_prod;
  39 };
  40
  41 #ifdef XEN_WANT_FLEX_CONSOLE_RING
  42 #include "ring.h"
  43 DEFINE_XEN_FLEX_RING(xencons);
  44 #endif
  45
  46 #endif /* __XEN_PUBLIC_IO_CONSOLE_H__ */