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      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__ */
     47 
     48 /*
     49  * Local variables:
     50  * mode: C
     51  * c-file-style: "BSD"
     52  * c-basic-offset: 4
     53  * tab-width: 4
     54  * indent-tabs-mode: nil
     55  * End:
     56  */
     57