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authorRafaël Carré <rafael.carre@gmail.com>2009-06-29 14:29:35 +0000
committerRafaël Carré <rafael.carre@gmail.com>2009-06-29 14:29:35 +0000
commitb955dff268005d3d55ee3f38af0875718ab6021a (patch)
tree7c8c1eb5ec2ab0d0a7d874e10092cab8ba1d5985 /firmware/target/arm
parentb3ed33d04aec20568b8bb9616349e6d7e4c71882 (diff)
downloadrockbox-b955dff268005d3d55ee3f38af0875718ab6021a.tar.gz
rockbox-b955dff268005d3d55ee3f38af0875718ab6021a.zip
Move PP (last target) timer code in target tree
Put warnings in timer.h for incomplete targets (TIMER_FREQ not defined and/or timer-target.h inexistant) Correct TIMER_STOP & TIMER_START macros arguments for target without timers TIMER_START takes an extra argument in multicore builds (macro in macro doesn't work fine..) git-svn-id: svn://svn.rockbox.org/rockbox/trunk@21557 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'firmware/target/arm')
-rw-r--r--firmware/target/arm/timer-pp.c87
-rw-r--r--firmware/target/arm/timer-target.h52
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 @@
+/***************************************************************************
+* __________ __ ___.
+* Open \______ \ ____ ____ | | _\_ |__ _______ ___
+* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
+* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
+* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
+* \/ \/ \/ \/ \/
+* $Id$
+*
+* Copyright (C) 2006 Thom Johansen
+*
+* This program is free software; you can redistribute it and/or
+* modify it under the terms of the GNU General Public License
+* as published by the Free Software Foundation; either version 2
+* of the License, or (at your option) any later version.
+*
+* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+* KIND, either express or implied.
+*
+****************************************************************************/
+
+#include "cpu.h"
+#include "system.h"
+#include "timer.h"
+#include "timer-target.h"
+
+static long SHAREDBSS_ATTR cycles_new = 0;
+
+void TIMER2(void)
+{
+ TIMER2_VAL; /* ACK interrupt */
+ if (cycles_new > 0)
+ {
+ TIMER2_CFG = 0xc0000000 | (cycles_new - 1);
+ cycles_new = 0;
+ }
+ if (pfn_timer != NULL)
+ {
+ cycles_new = -1;
+ /* "lock" the variable, in case timer_set_period()
+ * is called within pfn_timer() */
+ pfn_timer();
+ cycles_new = 0;
+ }
+}
+
+bool __timer_set(long cycles, bool start)
+{
+ if (cycles > 0x20000000 || cycles < 2)
+ return false;
+
+ if (start)
+ {
+ if (pfn_unregister != NULL)
+ {
+ pfn_unregister();
+ pfn_unregister = NULL;
+ }
+ CPU_INT_DIS = TIMER2_MASK;
+ COP_INT_DIS = TIMER2_MASK;
+ }
+ if (start || (cycles_new == -1)) /* within isr, cycles_new is "locked" */
+ TIMER2_CFG = 0xc0000000 | (cycles - 1); /* enable timer */
+ else
+ cycles_new = cycles;
+
+ return true;
+}
+
+bool __timer_start(IF_COP_VOID(int core))
+{
+ /* unmask interrupt source */
+#if NUM_CORES > 1
+ if (core == COP)
+ COP_INT_EN = TIMER2_MASK;
+ else
+#endif
+ CPU_INT_EN = TIMER2_MASK;
+ return true;
+}
+
+void __timer_stop(void)
+{
+ TIMER2_CFG = 0; /* stop timer 2 */
+ CPU_INT_DIS = TIMER2_MASK;
+ COP_INT_DIS = TIMER2_MASK;
+}
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 @@
+/***************************************************************************
+* __________ __ ___.
+* Open \______ \ ____ ____ | | _\_ |__ _______ ___
+* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
+* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
+* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
+* \/ \/ \/ \/ \/
+* $Id$
+*
+* Copyright (C) 2006 Thom Johansen
+*
+* This program is free software; you can redistribute it and/or
+* modify it under the terms of the GNU General Public License
+* as published by the Free Software Foundation; either version 2
+* of the License, or (at your option) any later version.
+*
+* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+* KIND, either express or implied.
+*
+****************************************************************************/
+#ifndef TIMER_TARGET_H
+#define TIMER_TARGET_H
+
+#include "config.h"
+
+/* FIXME : this header is PP specific */
+#ifndef CPU_PP
+#error "PP specific header"
+#endif
+
+bool __timer_set(long cycles, bool start);
+bool __timer_start(IF_COP_VOID(int core));
+void __timer_stop(void);
+
+/* Portalplayer chips use a microsecond timer. */
+#define TIMER_FREQ 1000000
+
+#define __TIMER_SET(cycles, set) \
+ __timer_set(cycles, set)
+
+#if NUM_CORES > 1
+#define __TIMER_START(int_prio, core) \
+ __timer_start(core)
+#else
+#define __TIMER_START(int_prio) \
+ __timer_start()
+#endif
+
+#define __TIMER_STOP(...) \
+ __timer_stop()
+
+#endif /* TIMER_TARGET_H */