diff options
Diffstat (limited to 'firmware/target/arm')
-rw-r--r-- | firmware/target/arm/timer-pp.c | 87 | ||||
-rw-r--r-- | firmware/target/arm/timer-target.h | 52 |
2 files changed, 139 insertions, 0 deletions
diff --git a/firmware/target/arm/timer-pp.c b/firmware/target/arm/timer-pp.c new file mode 100644 index 0000000000..01c691f79e --- /dev/null +++ b/firmware/target/arm/timer-pp.c | |||
@@ -0,0 +1,87 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2006 Thom Johansen | ||
11 | * | ||
12 | * This program is free software; you can redistribute it and/or | ||
13 | * modify it under the terms of the GNU General Public License | ||
14 | * as published by the Free Software Foundation; either version 2 | ||
15 | * of the License, or (at your option) any later version. | ||
16 | * | ||
17 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
18 | * KIND, either express or implied. | ||
19 | * | ||
20 | ****************************************************************************/ | ||
21 | |||
22 | #include "cpu.h" | ||
23 | #include "system.h" | ||
24 | #include "timer.h" | ||
25 | #include "timer-target.h" | ||
26 | |||
27 | static long SHAREDBSS_ATTR cycles_new = 0; | ||
28 | |||
29 | void TIMER2(void) | ||
30 | { | ||
31 | TIMER2_VAL; /* ACK interrupt */ | ||
32 | if (cycles_new > 0) | ||
33 | { | ||
34 | TIMER2_CFG = 0xc0000000 | (cycles_new - 1); | ||
35 | cycles_new = 0; | ||
36 | } | ||
37 | if (pfn_timer != NULL) | ||
38 | { | ||
39 | cycles_new = -1; | ||
40 | /* "lock" the variable, in case timer_set_period() | ||
41 | * is called within pfn_timer() */ | ||
42 | pfn_timer(); | ||
43 | cycles_new = 0; | ||
44 | } | ||
45 | } | ||
46 | |||
47 | bool __timer_set(long cycles, bool start) | ||
48 | { | ||
49 | if (cycles > 0x20000000 || cycles < 2) | ||
50 | return false; | ||
51 | |||
52 | if (start) | ||
53 | { | ||
54 | if (pfn_unregister != NULL) | ||
55 | { | ||
56 | pfn_unregister(); | ||
57 | pfn_unregister = NULL; | ||
58 | } | ||
59 | CPU_INT_DIS = TIMER2_MASK; | ||
60 | COP_INT_DIS = TIMER2_MASK; | ||
61 | } | ||
62 | if (start || (cycles_new == -1)) /* within isr, cycles_new is "locked" */ | ||
63 | TIMER2_CFG = 0xc0000000 | (cycles - 1); /* enable timer */ | ||
64 | else | ||
65 | cycles_new = cycles; | ||
66 | |||
67 | return true; | ||
68 | } | ||
69 | |||
70 | bool __timer_start(IF_COP_VOID(int core)) | ||
71 | { | ||
72 | /* unmask interrupt source */ | ||
73 | #if NUM_CORES > 1 | ||
74 | if (core == COP) | ||
75 | COP_INT_EN = TIMER2_MASK; | ||
76 | else | ||
77 | #endif | ||
78 | CPU_INT_EN = TIMER2_MASK; | ||
79 | return true; | ||
80 | } | ||
81 | |||
82 | void __timer_stop(void) | ||
83 | { | ||
84 | TIMER2_CFG = 0; /* stop timer 2 */ | ||
85 | CPU_INT_DIS = TIMER2_MASK; | ||
86 | COP_INT_DIS = TIMER2_MASK; | ||
87 | } | ||
diff --git a/firmware/target/arm/timer-target.h b/firmware/target/arm/timer-target.h new file mode 100644 index 0000000000..6801cfe783 --- /dev/null +++ b/firmware/target/arm/timer-target.h | |||
@@ -0,0 +1,52 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2006 Thom Johansen | ||
11 | * | ||
12 | * This program is free software; you can redistribute it and/or | ||
13 | * modify it under the terms of the GNU General Public License | ||
14 | * as published by the Free Software Foundation; either version 2 | ||
15 | * of the License, or (at your option) any later version. | ||
16 | * | ||
17 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
18 | * KIND, either express or implied. | ||
19 | * | ||
20 | ****************************************************************************/ | ||
21 | #ifndef TIMER_TARGET_H | ||
22 | #define TIMER_TARGET_H | ||
23 | |||
24 | #include "config.h" | ||
25 | |||
26 | /* FIXME : this header is PP specific */ | ||
27 | #ifndef CPU_PP | ||
28 | #error "PP specific header" | ||
29 | #endif | ||
30 | |||
31 | bool __timer_set(long cycles, bool start); | ||
32 | bool __timer_start(IF_COP_VOID(int core)); | ||
33 | void __timer_stop(void); | ||
34 | |||
35 | /* Portalplayer chips use a microsecond timer. */ | ||
36 | #define TIMER_FREQ 1000000 | ||
37 | |||
38 | #define __TIMER_SET(cycles, set) \ | ||
39 | __timer_set(cycles, set) | ||
40 | |||
41 | #if NUM_CORES > 1 | ||
42 | #define __TIMER_START(int_prio, core) \ | ||
43 | __timer_start(core) | ||
44 | #else | ||
45 | #define __TIMER_START(int_prio) \ | ||
46 | __timer_start() | ||
47 | #endif | ||
48 | |||
49 | #define __TIMER_STOP(...) \ | ||
50 | __timer_stop() | ||
51 | |||
52 | #endif /* TIMER_TARGET_H */ | ||