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Commit | Line | Data |
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df85a78b | 1 | /* |
ffa0f7eb | 2 | * QEMU Character device internals |
df85a78b MAL |
3 | * |
4 | * Copyright (c) 2003-2008 Fabrice Bellard | |
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 deal | |
8 | * in the Software without restriction, including without limitation the rights | |
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
10 | * 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 | |
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
22 | * THE SOFTWARE. | |
23 | */ | |
ffa0f7eb PMD |
24 | #ifndef CHARDEV_INTERNAL_H |
25 | #define CHARDEV_INTERNAL_H | |
df85a78b | 26 | |
8228e353 | 27 | #include "chardev/char.h" |
4d43a603 | 28 | #include "chardev/char-fe.h" |
30827bad | 29 | #include "qom/object.h" |
df85a78b | 30 | |
df85a78b MAL |
31 | #define MAX_MUX 4 |
32 | #define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */ | |
33 | #define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1) | |
ffa0f7eb | 34 | |
df85a78b MAL |
35 | typedef struct MuxChardev { |
36 | Chardev parent; | |
37 | CharBackend *backends[MAX_MUX]; | |
38 | CharBackend chr; | |
39 | int focus; | |
40 | int mux_cnt; | |
41 | int term_got_escape; | |
42 | int max_size; | |
43 | /* Intermediate input buffer catches escape sequences even if the | |
44 | currently active device is not accepting any input - but only until it | |
45 | is full as well. */ | |
46 | unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE]; | |
47 | int prod[MAX_MUX]; | |
48 | int cons[MAX_MUX]; | |
49 | int timestamps; | |
50 | ||
51 | /* Protected by the Chardev chr_write_lock. */ | |
52 | int linestart; | |
53 | int64_t timestamps_start; | |
54 | } MuxChardev; | |
55 | ||
56 | #define MUX_CHARDEV(obj) OBJECT_CHECK(MuxChardev, (obj), TYPE_CHARDEV_MUX) | |
57 | #define CHARDEV_IS_MUX(chr) \ | |
58 | object_dynamic_cast(OBJECT(chr), TYPE_CHARDEV_MUX) | |
59 | ||
df85a78b | 60 | void mux_set_focus(Chardev *chr, int focus); |
2fa9044a | 61 | void mux_chr_send_all_event(Chardev *chr, QEMUChrEvent event); |
df85a78b | 62 | |
30827bad PMD |
63 | Object *get_chardevs_root(void); |
64 | ||
df85a78b | 65 | #endif /* CHAR_MUX_H */ |