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authorGreg Ungerer <gerg@snapgear.com>2008-02-01 17:37:39 +1000
committerLinus Torvalds <torvalds@linux-foundation.org>2008-02-01 20:58:10 +1100
commit297a834d0b593179cc178ddc5f128c8b8844d7be (patch)
tree31355d0128d00ba0a0aa9b23b49b893727a37655 /arch/m68knommu/platform/5307
parent703d01255e650b2f1ff6b2df5345bd481fd094e6 (diff)
downloadlinux-297a834d0b593179cc178ddc5f128c8b8844d7be.tar.bz2
m68knommu: move ColdFire timers.c to its own coldfire directory
Move common ColdFire CPU timers.c to common coldfire platform directory. Currently the common ColdFire CPU family code sits in the arch/m68knommu/platform/5307 directory. This is confusing, the files containing this common code are in no way specific to the 5307 ColdFire. Create an arch/m68knommu/platform/coldfire directory to contain this common code. Other m68knommu CPU varients do not need use this code though, so it doesn't make sense to move it to arch/m68knommu/kernel. Signed-off-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/m68knommu/platform/5307')
-rw-r--r--arch/m68knommu/platform/5307/timers.c155
1 files changed, 0 insertions, 155 deletions
diff --git a/arch/m68knommu/platform/5307/timers.c b/arch/m68knommu/platform/5307/timers.c
deleted file mode 100644
index 489dec85c859..000000000000
--- a/arch/m68knommu/platform/5307/timers.c
+++ /dev/null
@@ -1,155 +0,0 @@
-/***************************************************************************/
-
-/*
- * timers.c -- generic ColdFire hardware timer support.
- *
- * Copyright (C) 1999-2007, Greg Ungerer (gerg@snapgear.com)
- */
-
-/***************************************************************************/
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/sched.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <asm/io.h>
-#include <asm/traps.h>
-#include <asm/machdep.h>
-#include <asm/coldfire.h>
-#include <asm/mcftimer.h>
-#include <asm/mcfsim.h>
-
-/***************************************************************************/
-
-/*
- * By default use timer1 as the system clock timer.
- */
-#define TA(a) (MCF_MBAR + MCFTIMER_BASE1 + (a))
-
-/*
- * Default the timer and vector to use for ColdFire. Some ColdFire
- * CPU's and some boards may want different. Their sub-architecture
- * startup code (in config.c) can change these if they want.
- */
-unsigned int mcf_timervector = 29;
-unsigned int mcf_profilevector = 31;
-unsigned int mcf_timerlevel = 5;
-
-/*
- * These provide the underlying interrupt vector support.
- * Unfortunately it is a little different on each ColdFire.
- */
-extern void mcf_settimericr(int timer, int level);
-extern int mcf_timerirqpending(int timer);
-
-#if defined(CONFIG_M532x)
-#define __raw_readtrr __raw_readl
-#define __raw_writetrr __raw_writel
-#else
-#define __raw_readtrr __raw_readw
-#define __raw_writetrr __raw_writew
-#endif
-
-/***************************************************************************/
-
-static irqreturn_t hw_tick(int irq, void *dummy)
-{
- /* Reset the ColdFire timer */
- __raw_writeb(MCFTIMER_TER_CAP | MCFTIMER_TER_REF, TA(MCFTIMER_TER));
-
- return arch_timer_interrupt(irq, dummy);
-}
-
-/***************************************************************************/
-
-static struct irqaction coldfire_timer_irq = {
- .name = "timer",
- .flags = IRQF_DISABLED | IRQF_TIMER,
- .handler = hw_tick,
-};
-
-/***************************************************************************/
-
-static int ticks_per_intr;
-
-void hw_timer_init(void)
-{
- setup_irq(mcf_timervector, &coldfire_timer_irq);
-
- __raw_writew(MCFTIMER_TMR_DISABLE, TA(MCFTIMER_TMR));
- ticks_per_intr = (MCF_BUSCLK / 16) / HZ;
- __raw_writetrr(ticks_per_intr - 1, TA(MCFTIMER_TRR));
- __raw_writew(MCFTIMER_TMR_ENORI | MCFTIMER_TMR_CLK16 |
- MCFTIMER_TMR_RESTART | MCFTIMER_TMR_ENABLE, TA(MCFTIMER_TMR));
-
- mcf_settimericr(1, mcf_timerlevel);
-
-#ifdef CONFIG_HIGHPROFILE
- coldfire_profile_init();
-#endif
-}
-
-/***************************************************************************/
-
-unsigned long hw_timer_offset(void)
-{
- unsigned long tcn, offset;
-
- tcn = __raw_readw(TA(MCFTIMER_TCN));
- offset = ((tcn + 1) * (1000000 / HZ)) / ticks_per_intr;
-
- /* Check if we just wrapped the counters and maybe missed a tick */
- if ((offset < (1000000 / HZ / 2)) && mcf_timerirqpending(1))
- offset += 1000000 / HZ;
- return offset;
-}
-
-/***************************************************************************/
-#ifdef CONFIG_HIGHPROFILE
-/***************************************************************************/
-
-/*
- * By default use timer2 as the profiler clock timer.
- */
-#define PA(a) (MCF_MBAR + MCFTIMER_BASE2 + (a))
-
-/*
- * Choose a reasonably fast profile timer. Make it an odd value to
- * try and get good coverage of kernel operations.
- */
-#define PROFILEHZ 1013
-
-/*
- * Use the other timer to provide high accuracy profiling info.
- */
-irqreturn_t coldfire_profile_tick(int irq, void *dummy)
-{
- /* Reset ColdFire timer2 */
- __raw_writeb(MCFTIMER_TER_CAP | MCFTIMER_TER_REF, PA(MCFTIMER_TER));
- if (current->pid)
- profile_tick(CPU_PROFILING, regs);
- return IRQ_HANDLED;
-}
-
-/***************************************************************************/
-
-void coldfire_profile_init(void)
-{
- printk(KERN_INFO "PROFILE: lodging TIMER2 @ %dHz as profile timer\n", PROFILEHZ);
-
- /* Set up TIMER 2 as high speed profile clock */
- __raw_writew(MCFTIMER_TMR_DISABLE, PA(MCFTIMER_TMR));
-
- __raw_writetrr(((MCF_CLK / 16) / PROFILEHZ), PA(MCFTIMER_TRR));
- __raw_writew(MCFTIMER_TMR_ENORI | MCFTIMER_TMR_CLK16 |
- MCFTIMER_TMR_RESTART | MCFTIMER_TMR_ENABLE, PA(MCFTIMER_TMR));
-
- request_irq(mcf_profilevector, coldfire_profile_tick,
- (IRQF_DISABLED | IRQ_FLG_FAST), "profile timer", NULL);
- mcf_settimericr(2, 7);
-}
-
-/***************************************************************************/
-#endif /* CONFIG_HIGHPROFILE */
-/***************************************************************************/