1/* SPDX-License-Identifier: GPL-2.0-or-later */
 2/*
 3 * hvconsole.h
 4 * Copyright (C) 2004 Ryan S Arnold, IBM Corporation
 5 *
 6 * LPAR console support.
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 7 */
 8
 9#ifndef _PPC64_HVCONSOLE_H
10#define _PPC64_HVCONSOLE_H
11#ifdef __KERNEL__
12
13/*
14 * PSeries firmware will only send/recv up to 16 bytes of character data per
15 * hcall.
16 */
17#define MAX_VIO_PUT_CHARS	16
18#define SIZE_VIO_GET_CHARS	16
19
20/*
21 * Vio firmware always attempts to fetch MAX_VIO_GET_CHARS chars.  The 'count'
22 * parm is included to conform to put_chars() function pointer template
23 */
24extern ssize_t hvc_get_chars(uint32_t vtermno, u8 *buf, size_t count);
25extern ssize_t hvc_put_chars(uint32_t vtermno, const u8 *buf, size_t count);
26
27/* Provided by HVC VIO */
28void hvc_vio_init_early(void);
29
30#endif /* __KERNEL__ */
31#endif /* _PPC64_HVCONSOLE_H */

 
 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 */
37extern int hvc_get_chars(uint32_t vtermno, char *buf, int count);
38extern int hvc_put_chars(uint32_t vtermno, const char *buf, int count);
 
 
 
39
40#endif /* __KERNEL__ */
41#endif /* _PPC64_HVCONSOLE_H */