* code to do general bookkeeping (e.g. update jiffies, run
* bottom halves, etc.)
*/
-#include <linux/config.h>
#include <linux/interrupt.h>
#include <linux/sched.h>
#include <linux/spinlock.h>
#include <linux/kernel_stat.h>
#include <asm/irq.h>
-#include <asm/ptrace.h>
#include <asm/addrspace.h>
#include <asm/time.h>
#include <asm/io.h>
#define SB1250_HPT_NUM 3
#define SB1250_HPT_VALUE M_SCD_TIMER_CNT /* max value */
-#define SB1250_HPT_SHIFT ((sizeof(unsigned int)*8)-V_SCD_TIMER_WIDTH)
extern int sb1250_steal_irq(int irq);
-static unsigned int sb1250_hpt_read(void);
-static void sb1250_hpt_init(unsigned int);
-
-static unsigned int hpt_offset;
+static cycle_t sb1250_hpt_read(void);
void __init sb1250_hpt_setup(void)
{
__raw_writeq(M_SCD_TIMER_ENABLE | M_SCD_TIMER_MODE_CONTINUOUS,
IOADDR(A_SCD_TIMER_REGISTER(SB1250_HPT_NUM, R_SCD_TIMER_CFG)));
- /*
- * we need to fill 32 bits, so just use the upper 23 bits and pretend
- * the timer is going 512Mhz instead of 1Mhz
- */
- mips_hpt_frequency = V_SCD_TIMER_FREQ << SB1250_HPT_SHIFT;
- mips_hpt_init = sb1250_hpt_init;
- mips_hpt_read = sb1250_hpt_read;
+ mips_hpt_frequency = V_SCD_TIMER_FREQ;
+ clocksource_mips.read = sb1250_hpt_read;
+ clocksource_mips.mask = M_SCD_TIMER_INIT;
}
}
*/
}
-void sb1250_timer_interrupt(struct pt_regs *regs)
+void sb1250_timer_interrupt(void)
{
int cpu = smp_processor_id();
int irq = K_INT_TIMER_0 + cpu;
/*
* CPU 0 handles the global timer interrupt job
*/
- ll_timer_interrupt(irq, regs);
+ ll_timer_interrupt(irq);
}
else {
/*
* other CPUs should just do profiling and process accounting
*/
- ll_local_timer_interrupt(irq, regs);
+ ll_local_timer_interrupt(irq);
}
}
/*
* The HPT is free running from SB1250_HPT_VALUE down to 0 then starts over
- * again. There's no easy way to set to a specific value so store init value
- * in hpt_offset and subtract each time.
- *
- * Note: Timer isn't full 32bits so shift it into the upper part making
- * it appear to run at a higher frequency.
+ * again.
*/
-static unsigned int sb1250_hpt_read(void)
+static cycle_t sb1250_hpt_read(void)
{
unsigned int count;
count = G_SCD_TIMER_CNT(__raw_readq(IOADDR(A_SCD_TIMER_REGISTER(SB1250_HPT_NUM, R_SCD_TIMER_CNT))));
- count = (SB1250_HPT_VALUE - count) << SB1250_HPT_SHIFT;
-
- return count - hpt_offset;
-}
-
-static void sb1250_hpt_init(unsigned int count)
-{
- hpt_offset = count;
- return;
+ return SB1250_HPT_VALUE - count;
}