apic, i386/bigsmp: Fix false warnings regarding logical APIC ID mismatches

[pandora-kernel.git] / arch / x86 / kernel / i8253.c

diff --git a/arch/x86/kernel/i8253.c b/arch/x86/kernel/i8253.c
index fb66dc9..f2b96de 100644 (file)
--- a/arch/x86/kernel/i8253.c
+++ b/arch/x86/kernel/i8253.c
@@ -3,113 +3,24 @@
  *
  */
 #include <linux/clockchips.h>
-#include <linux/interrupt.h>
-#include <linux/spinlock.h>
-#include <linux/jiffies.h>
 #include <linux/module.h>
 #include <linux/timex.h>
-#include <linux/delay.h>
-#include <linux/init.h>
-#include <linux/io.h>
+#include <linux/i8253.h>
 
-#include <asm/i8253.h>
 #include <asm/hpet.h>
+#include <asm/time.h>
 #include <asm/smp.h>
 
-DEFINE_RAW_SPINLOCK(i8253_lock);
-EXPORT_SYMBOL(i8253_lock);
-
 /*
  * HPET replaces the PIT, when enabled. So we need to know, which of
  * the two timers is used
  */
 struct clock_event_device *global_clock_event;
 
-/*
- * Initialize the PIT timer.
- *
- * This is also called after resume to bring the PIT into operation again.
- */
-static void init_pit_timer(enum clock_event_mode mode,
-                          struct clock_event_device *evt)
-{
-       raw_spin_lock(&i8253_lock);
-
-       switch (mode) {
-       case CLOCK_EVT_MODE_PERIODIC:
-               /* binary, mode 2, LSB/MSB, ch 0 */
-               outb_pit(0x34, PIT_MODE);
-               outb_pit(LATCH & 0xff , PIT_CH0);       /* LSB */
-               outb_pit(LATCH >> 8 , PIT_CH0);         /* MSB */
-               break;
-
-       case CLOCK_EVT_MODE_SHUTDOWN:
-       case CLOCK_EVT_MODE_UNUSED:
-               if (evt->mode == CLOCK_EVT_MODE_PERIODIC ||
-                   evt->mode == CLOCK_EVT_MODE_ONESHOT) {
-                       outb_pit(0x30, PIT_MODE);
-                       outb_pit(0, PIT_CH0);
-                       outb_pit(0, PIT_CH0);
-               }
-               break;
-
-       case CLOCK_EVT_MODE_ONESHOT:
-               /* One shot setup */
-               outb_pit(0x38, PIT_MODE);
-               break;
-
-       case CLOCK_EVT_MODE_RESUME:
-               /* Nothing to do here */
-               break;
-       }
-       raw_spin_unlock(&i8253_lock);
-}
-
-/*
- * Program the next event in oneshot mode
- *
- * Delta is given in PIT ticks
- */
-static int pit_next_event(unsigned long delta, struct clock_event_device *evt)
-{
-       raw_spin_lock(&i8253_lock);
-       outb_pit(delta & 0xff , PIT_CH0);       /* LSB */
-       outb_pit(delta >> 8 , PIT_CH0);         /* MSB */
-       raw_spin_unlock(&i8253_lock);
-
-       return 0;
-}
-
-/*
- * On UP the PIT can serve all of the possible timer functions. On SMP systems
- * it can be solely used for the global tick.
- *
- * The profiling and update capabilities are switched off once the local apic is
- * registered. This mechanism replaces the previous #ifdef LOCAL_APIC -
- * !using_apic_timer decisions in do_timer_interrupt_hook()
- */
-static struct clock_event_device pit_ce = {
-       .name           = "pit",
-       .features       = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT,
-       .set_mode       = init_pit_timer,
-       .set_next_event = pit_next_event,
-       .irq            = 0,
-};
-
-/*
- * Initialize the conversion factor and the min/max deltas of the clock event
- * structure and register the clock event source with the framework.
- */
 void __init setup_pit_timer(void)
 {
-       /*
-        * Start pit with the boot cpu mask and make it global after the
-        * IO_APIC has been initialized.
-        */
-       pit_ce.cpumask = cpumask_of(smp_processor_id());
-
-       clockevents_config_and_register(&pit_ce, CLOCK_TICK_RATE, 0xF, 0x7FFF);
-       global_clock_event = &pit_ce;
+       clockevent_i8253_init(true);
+       global_clock_event = &i8253_clockevent;
 }
 
 #ifndef CONFIG_X86_64
@@ -123,7 +34,7 @@ static int __init init_pit_clocksource(void)
          * - when local APIC timer is active (PIT is switched off)
          */
        if (num_possible_cpus() > 1 || is_hpet_enabled() ||
-           pit_ce.mode != CLOCK_EVT_MODE_PERIODIC)
+           i8253_clockevent.mode != CLOCK_EVT_MODE_PERIODIC)
                return 0;
 
        return clocksource_i8253_init();