Linux Kernel  3.7.1
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hvconsole.h
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1 /*
2  * hvconsole.h
3  * Copyright (C) 2004 Ryan S Arnold, IBM Corporation
4  *
5  * LPAR console support.
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License as published by
9  * the Free Software Foundation; either version 2 of the License, or
10  * (at your option) any later version.
11  *
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program; if not, write to the Free Software
19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20  */
21 
22 #ifndef _PPC64_HVCONSOLE_H
23 #define _PPC64_HVCONSOLE_H
24 #ifdef __KERNEL__
25 
26 /*
27  * PSeries firmware will only send/recv up to 16 bytes of character data per
28  * hcall.
29  */
30 #define MAX_VIO_PUT_CHARS 16
31 #define SIZE_VIO_GET_CHARS 16
32 
33 /*
34  * Vio firmware always attempts to fetch MAX_VIO_GET_CHARS chars. The 'count'
35  * parm is included to conform to put_chars() function pointer template
36  */
37 extern int hvc_get_chars(uint32_t vtermno, char *buf, int count);
38 extern int hvc_put_chars(uint32_t vtermno, const char *buf, int count);
39 
40 #endif /* __KERNEL__ */
41 #endif /* _PPC64_HVCONSOLE_H */