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1da177e4 LT |
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 | ||
25 | /* | |
26 | * This is the max number of console adapters that can/will be found as | |
27 | * console devices on first stage console init. Any number beyond this range | |
28 | * can't be used as a console device but is still a valid tty device. | |
29 | */ | |
30 | #define MAX_NR_HVC_CONSOLES 16 | |
31 | ||
acad9559 | 32 | /* implemented by a low level driver */ |
030ffad2 MM |
33 | struct hv_ops { |
34 | int (*get_chars)(uint32_t vtermno, char *buf, int count); | |
35 | int (*put_chars)(uint32_t vtermno, const char *buf, int count); | |
36 | }; | |
1da177e4 LT |
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 | ||
acad9559 MM |
40 | struct hvc_struct; |
41 | ||
42 | /* Register a vterm and a slot index for use as a console (console_init) */ | |
030ffad2 | 43 | extern int hvc_instantiate(uint32_t vtermno, int index, struct hv_ops *ops); |
acad9559 | 44 | /* register a vterm for hvc tty operation (module_init or hotplug add) */ |
030ffad2 MM |
45 | extern struct hvc_struct * __devinit hvc_alloc(uint32_t vtermno, int irq, |
46 | struct hv_ops *ops); | |
acad9559 MM |
47 | /* remove a vterm from hvc tty operation (modele_exit or hotplug remove) */ |
48 | extern int __devexit hvc_remove(struct hvc_struct *hp); | |
1da177e4 | 49 | #endif /* _PPC64_HVCONSOLE_H */ |