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

firmware/SOURCES

@@ -394,6 +394,7 @@ target/arm/as3525/pcm-as3525.c
 
 #if defined(CPU_PP)
 target/arm/kernel-pp.c
+target/arm/timer-pp.c
 #if CONFIG_CPU == PP5002
 target/arm/system-pp5002.c
 #elif defined CPU_PP502x

firmware/export/timer.h

@@ -25,19 +25,19 @@
 #include <stdbool.h>
 #include "config.h"
 
-#if defined(CPU_PP)
+#if defined(SIMULATOR)
- /* Portalplayer chips use a microsecond timer. */
  #define TIMER_FREQ 1000000
 #elif CONFIG_CPU == S3C2440 || CONFIG_CPU == DM320 || CONFIG_CPU == TCC7801 \
       || defined(CPU_TCC77X) || CONFIG_CPU == AS3525 || CONFIG_CPU == IMX31L \
       || CONFIG_CPU == JZ4732 || CONFIG_CPU == PNX0101 \
-      || defined(CPU_COLDFIRE) || CONFIG_CPU == SH7034
+      || defined(CPU_COLDFIRE) || CONFIG_CPU == SH7034 || defined(CPU_PP)
  #include "timer-target.h"
-#elif defined(SIMULATOR)
+#else
- #define TIMER_FREQ 1000000
+ #warning "Target without timer-target.h"
 #endif
 
 #ifndef TIMER_FREQ
+ #warning "TIMER_FREQ not defined"
  #define TIMER_FREQ CPU_FREQ
 #endif
 bool timer_register(int reg_prio, void (*unregister_callback)(void),

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;
+}

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 */

firmware/timer.c

@@ -29,64 +29,22 @@
 static int timer_prio = -1;
 void SHAREDBSS_ATTR (*pfn_timer)(void) = NULL;      /* timer callback */
 void SHAREDBSS_ATTR (*pfn_unregister)(void) = NULL; /* unregister callback */
-#if defined CPU_PP
-static long SHAREDBSS_ATTR cycles_new = 0;
-#endif
 
 #ifndef __TIMER_SET
 /* Define these if not defined by target to make the #else cases compile
  * even if the target doesn't have them implemented. */
 #define __TIMER_SET(cycles, set) false
-#define __TIMER_START() false
+#if NUM_CORES > 1
-#define __TIMER_STOP(...)
+#define __TIMER_START(int_prio, core) false
+#else
+#define __TIMER_START(int_prio) false
+#endif
+#define __TIMER_STOP()
 #endif
-
-/* interrupt handler */
-#if defined(CPU_PP)
-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;
-    }
-}
-#endif /* CONFIG_CPU */
 
 static bool timer_set(long cycles, bool start)
 {
-#if defined(CPU_PP)
-    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;
-#else
     return __TIMER_SET(cycles, start);
-#endif /* CONFIG_CPU */
 }
 
 /* Register a user timer, called every <cycles> TIMER_FREQ cycles */
@@ -109,18 +67,12 @@ bool timer_register(int reg_prio, void (*unregister_callback)(void),
     pfn_unregister = unregister_callback;
     timer_prio = reg_prio;
 
-#if defined(CPU_PP)
-    /* unmask interrupt source */
 #if NUM_CORES > 1
-    if (core == COP)
+    return __TIMER_START(int_prio, core);
-        COP_INT_EN = TIMER2_MASK;
-    else
-#endif
-        CPU_INT_EN = TIMER2_MASK;
-    return true;
 #else
     return __TIMER_START(int_prio);
 #endif
+
     /* Cover for targets that don't use all these */
     (void)reg_prio;
     (void)unregister_callback;
@@ -137,13 +89,8 @@ bool timer_set_period(long cycles)
 
 void timer_unregister(void)
 {
-#if defined(CPU_PP)
-    TIMER2_CFG = 0;         /* stop timer 2 */
-    CPU_INT_DIS = TIMER2_MASK;
-    COP_INT_DIS = TIMER2_MASK;
-#else
     __TIMER_STOP();
-#endif
+
     pfn_timer = NULL;
     pfn_unregister = NULL;
     timer_prio = -1;