1 files changed, 0 insertions, 239 deletions
diff --git a/arch/tile/kernel/time.c b/arch/tile/kernel/time.c
deleted file mode 100644
index 5ac397ec6986..000000000000
--- a/arch/tile/kernel/time.c
+++ /dev/null
@@ -1,239 +0,0 @@
-/*
- * Copyright 2010 Tilera Corporation. All Rights Reserved.
- *
- *   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, version 2.
- *
- *   This program is distributed in the hope that it will be useful, but
- *   WITHOUT ANY WARRANTY; without even the implied warranty of
- *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
- *   NON INFRINGEMENT.  See the GNU General Public License for
- *   more details.
- *
- * Support the cycle counter clocksource and tile timer clock event device.
- */
-
-#include <linux/time.h>
-#include <linux/timex.h>
-#include <linux/clocksource.h>
-#include <linux/clockchips.h>
-#include <linux/hardirq.h>
-#include <linux/sched.h>
-#include <linux/smp.h>
-#include <linux/delay.h>
-#include <linux/module.h>
-#include <asm/irq_regs.h>
-#include <asm/traps.h>
-#include <hv/hypervisor.h>
-#include <arch/interrupts.h>
-#include <arch/spr_def.h>
-
-
-/*
- * Define the cycle counter clock source.
- */
-
-/* How many cycles per second we are running at. */
-static cycles_t cycles_per_sec __write_once;
-
-cycles_t get_clock_rate(void)
-{
-	return cycles_per_sec;
-}
-
-#if CHIP_HAS_SPLIT_CYCLE()
-cycles_t get_cycles(void)
-{
-	unsigned int high = __insn_mfspr(SPR_CYCLE_HIGH);
-	unsigned int low = __insn_mfspr(SPR_CYCLE_LOW);
-	unsigned int high2 = __insn_mfspr(SPR_CYCLE_HIGH);
-
-	while (unlikely(high != high2)) {
-		low = __insn_mfspr(SPR_CYCLE_LOW);
-		high = high2;
-		high2 = __insn_mfspr(SPR_CYCLE_HIGH);
-	}
-
-	return (((cycles_t)high) << 32) | low;
-}
-EXPORT_SYMBOL(get_cycles);
-#endif
-
-/*
- * We use a relatively small shift value so that sched_clock()
- * won't wrap around very often.
- */
-#define SCHED_CLOCK_SHIFT 10
-
-static unsigned long sched_clock_mult __write_once;
-
-static cycles_t clocksource_get_cycles(struct clocksource *cs)
-{
-	return get_cycles();
-}
-
-static struct clocksource cycle_counter_cs = {
-	.name = "cycle counter",
-	.rating = 300,
-	.read = clocksource_get_cycles,
-	.mask = CLOCKSOURCE_MASK(64),
-	.flags = CLOCK_SOURCE_IS_CONTINUOUS,
-};
-
-/*
- * Called very early from setup_arch() to set cycles_per_sec.
- * We initialize it early so we can use it to set up loops_per_jiffy.
- */
-void __init setup_clock(void)
-{
-	cycles_per_sec = hv_sysconf(HV_SYSCONF_CPU_SPEED);
-	sched_clock_mult =
-		clocksource_hz2mult(cycles_per_sec, SCHED_CLOCK_SHIFT);
-}
-
-void __init calibrate_delay(void)
-{
-	loops_per_jiffy = get_clock_rate() / HZ;
-	pr_info("Clock rate yields %lu.%02lu BogoMIPS (lpj=%lu)\n",
-		loops_per_jiffy/(500000/HZ),
-		(loops_per_jiffy/(5000/HZ)) % 100, loops_per_jiffy);
-}
-
-/* Called fairly late in init/main.c, but before we go smp. */
-void __init time_init(void)
-{
-	/* Initialize and register the clock source. */
-	clocksource_register_hz(&cycle_counter_cs, cycles_per_sec);
-
-	/* Start up the tile-timer interrupt source on the boot cpu. */
-	setup_tile_timer();
-}
-
-
-/*
- * Define the tile timer clock event device.  The timer is driven by
- * the TILE_TIMER_CONTROL register, which consists of a 31-bit down
- * counter, plus bit 31, which signifies that the counter has wrapped
- * from zero to (2**31) - 1.  The INT_TILE_TIMER interrupt will be
- * raised as long as bit 31 is set.
- *
- * The TILE_MINSEC value represents the largest range of real-time
- * we can possibly cover with the timer, based on MAX_TICK combined
- * with the slowest reasonable clock rate we might run at.
- */
-
-#define MAX_TICK 0x7fffffff   /* we have 31 bits of countdown timer */
-#define TILE_MINSEC 5         /* timer covers no more than 5 seconds */
-
-static int tile_timer_set_next_event(unsigned long ticks,
-				     struct clock_event_device *evt)
-{
-	BUG_ON(ticks > MAX_TICK);
-	__insn_mtspr(SPR_TILE_TIMER_CONTROL, ticks);
-	arch_local_irq_unmask_now(INT_TILE_TIMER);
-	return 0;
-}
-
-/*
- * Whenever anyone tries to change modes, we just mask interrupts
- * and wait for the next event to get set.
- */
-static void tile_timer_set_mode(enum clock_event_mode mode,
-				struct clock_event_device *evt)
-{
-	arch_local_irq_mask_now(INT_TILE_TIMER);
-}
-
-/*
- * Set min_delta_ns to 1 microsecond, since it takes about
- * that long to fire the interrupt.
- */
-static DEFINE_PER_CPU(struct clock_event_device, tile_timer) = {
-	.name = "tile timer",
-	.features = CLOCK_EVT_FEAT_ONESHOT,
-	.min_delta_ns = 1000,
-	.rating = 100,
-	.irq = -1,
-	.set_next_event = tile_timer_set_next_event,
-	.set_mode = tile_timer_set_mode,
-};
-
-void __cpuinit setup_tile_timer(void)
-{
-	struct clock_event_device *evt = &__get_cpu_var(tile_timer);
-
-	/* Fill in fields that are speed-specific. */
-	clockevents_calc_mult_shift(evt, cycles_per_sec, TILE_MINSEC);
-	evt->max_delta_ns = clockevent_delta2ns(MAX_TICK, evt);
-
-	/* Mark as being for this cpu only. */
-	evt->cpumask = cpumask_of(smp_processor_id());
-
-	/* Start out with timer not firing. */
-	arch_local_irq_mask_now(INT_TILE_TIMER);
-
-	/* Register tile timer. */
-	clockevents_register_device(evt);
-}
-
-/* Called from the interrupt vector. */
-void do_timer_interrupt(struct pt_regs *regs, int fault_num)
-{
-	struct pt_regs *old_regs = set_irq_regs(regs);
-	struct clock_event_device *evt = &__get_cpu_var(tile_timer);
-
-	/*
-	 * Mask the timer interrupt here, since we are a oneshot timer
-	 * and there are now by definition no events pending.
-	 */
-	arch_local_irq_mask(INT_TILE_TIMER);
-
-	/* Track time spent here in an interrupt context */
-	irq_enter();
-
-	/* Track interrupt count. */
-	__get_cpu_var(irq_stat).irq_timer_count++;
-
-	/* Call the generic timer handler */
-	evt->event_handler(evt);
-
-	/*
-	 * Track time spent against the current process again and
-	 * process any softirqs if they are waiting.
-	 */
-	irq_exit();
-
-	set_irq_regs(old_regs);
-}
-
-/*
- * Scheduler clock - returns current time in nanosec units.
- * Note that with LOCKDEP, this is called during lockdep_init(), and
- * we will claim that sched_clock() is zero for a little while, until
- * we run setup_clock(), above.
- */
-unsigned long long sched_clock(void)
-{
-	return clocksource_cyc2ns(get_cycles(),
-				  sched_clock_mult, SCHED_CLOCK_SHIFT);
-}
-
-int setup_profiling_timer(unsigned int multiplier)
-{
-	return -EINVAL;
-}
-
-/*
- * Use the tile timer to convert nsecs to core clock cycles, relying
- * on it having the same frequency as SPR_CYCLE.
- */
-cycles_t ns2cycles(unsigned long nsecs)
-{
-	/*
-	 * We do not have to disable preemption here as each core has the same
-	 * clock frequency.
-	 */
-	struct clock_event_device *dev = &__raw_get_cpu_var(tile_timer);
-	return ((u64)nsecs * dev->mult) >> dev->shift;
-}