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Diffstat (limited to 'firmware/include/kernel.h')
-rw-r--r-- | firmware/include/kernel.h | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/firmware/include/kernel.h b/firmware/include/kernel.h new file mode 100644 index 0000000000..0f69f43ec0 --- /dev/null +++ b/firmware/include/kernel.h | |||
@@ -0,0 +1,82 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2002 by Björn Stenberg | ||
11 | * | ||
12 | * All files in this archive are subject to the GNU General Public License. | ||
13 | * See the file COPYING in the source tree root for full license agreement. | ||
14 | * | ||
15 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
16 | * KIND, either express or implied. | ||
17 | * | ||
18 | ****************************************************************************/ | ||
19 | #ifndef _KERNEL_H_ | ||
20 | #define _KERNEL_H_ | ||
21 | |||
22 | #include <stdbool.h> | ||
23 | |||
24 | /* wrap-safe macros for tick comparison */ | ||
25 | #define TIME_AFTER(a,b) ((long)(b) - (long)(a) < 0) | ||
26 | #define TIME_BEFORE(a,b) TIME_AFTER(b,a) | ||
27 | |||
28 | #define HZ 100 /* number of ticks per second */ | ||
29 | |||
30 | #define MAX_NUM_TICK_TASKS 4 | ||
31 | |||
32 | #define QUEUE_LENGTH 16 /* MUST be a power of 2 */ | ||
33 | #define QUEUE_LENGTH_MASK (QUEUE_LENGTH - 1) | ||
34 | |||
35 | /* System defined message ID's */ | ||
36 | #define SYS_USB_CONNECTED -1 | ||
37 | #define SYS_USB_CONNECTED_ACK -2 | ||
38 | #define SYS_USB_DISCONNECTED -3 | ||
39 | #define SYS_USB_DISCONNECTED_ACK -4 | ||
40 | #define SYS_TIMEOUT -5 | ||
41 | |||
42 | struct event | ||
43 | { | ||
44 | int id; | ||
45 | void *data; | ||
46 | }; | ||
47 | |||
48 | struct event_queue | ||
49 | { | ||
50 | struct event events[QUEUE_LENGTH]; | ||
51 | unsigned int read; | ||
52 | unsigned int write; | ||
53 | }; | ||
54 | |||
55 | struct mutex | ||
56 | { | ||
57 | bool locked; | ||
58 | }; | ||
59 | |||
60 | /* global tick variable */ | ||
61 | extern long current_tick; | ||
62 | |||
63 | /* kernel functions */ | ||
64 | extern void kernel_init(void); | ||
65 | extern void yield(void); | ||
66 | extern void sleep(int ticks); | ||
67 | int set_irq_level(int level); | ||
68 | int tick_add_task(void (*f)(void)); | ||
69 | int tick_remove_task(void (*f)(void)); | ||
70 | |||
71 | extern void queue_init(struct event_queue *q); | ||
72 | extern void queue_wait(struct event_queue *q, struct event *ev); | ||
73 | extern void queue_wait_w_tmo(struct event_queue *q, struct event *ev, int ticks); | ||
74 | extern void queue_post(struct event_queue *q, int id, void *data); | ||
75 | extern bool queue_empty(struct event_queue* q); | ||
76 | extern int queue_broadcast(int id, void *data); | ||
77 | |||
78 | extern void mutex_init(struct mutex *m); | ||
79 | extern void mutex_lock(struct mutex *m); | ||
80 | extern void mutex_unlock(struct mutex *m); | ||
81 | |||
82 | #endif | ||