xref: /titanic_52/usr/src/uts/common/xen/public/io/console.h (revision efd4c9b63ad77503c101fc6c2ed8ba96c9d52964)
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 #endif /* __XEN_PUBLIC_IO_CONSOLE_H__ */
42 
43 /*
44  * Local variables:
45  * mode: C
46  * c-set-style: "BSD"
47  * c-basic-offset: 4
48  * tab-width: 4
49  * indent-tabs-mode: nil
50  * End:
51  */
52