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86xx: remove redudant code with lib_ppc/interrupts.c

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For some reason we duplicated the majority of code in lib_ppc/interrupts.c
Not know how that happened, but there is no good reason for it.

Use the interrupt_init_cpu() and timer_interrupt_cpu() since its why
they exist.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
Kumar Gala 2008-08-19 15:05:34 -05:00 committed by Wolfgang Denk
parent 1f6aa622e3
commit 5c7cbcd34d
1 changed files with 7 additions and 124 deletions
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131
cpu/mpc86xx/interrupts.c
View file

@ -35,78 +35,23 @@
#include <mpc86xx.h>
#include <command.h>
#include <asm/processor.h>
#include <ppc_asm.tmpl>
#include <watchdog.h>
unsigned long decrementer_count; /* count value for 1e6/HZ microseconds */
unsigned long timestamp;
static __inline__ unsigned long get_msr(void)
{
unsigned long msr;
asm volatile ("mfmsr %0":"=r" (msr):);
return msr;
}
static __inline__ void set_msr(unsigned long msr)
{
asm volatile ("mtmsr %0"::"r" (msr));
}
static __inline__ unsigned long get_dec(void)
{
unsigned long val;
asm volatile ("mfdec %0":"=r" (val):);
return val;
}
static __inline__ void set_dec(unsigned long val)
{
if (val)
asm volatile ("mtdec %0"::"r" (val));
}
/* interrupt is not supported yet */
int interrupt_init_cpu(unsigned long *decrementer_count)
{
return 0;
}
int interrupt_init(void)
{
int ret;
volatile immap_t *immr = (immap_t *)CFG_IMMR;
immr->im_pic.gcr = MPC86xx_PICGCR_RST;
while (immr->im_pic.gcr & MPC86xx_PICGCR_RST);
immr->im_pic.gcr = MPC86xx_PICGCR_MODE;
volatile ccsr_pic_t *pic = &immr->im_pic;
/* call cpu specific function from $(CPU)/interrupts.c */
ret = interrupt_init_cpu(&decrementer_count);
pic->gcr = MPC86xx_PICGCR_RST;
while (pic->gcr & MPC86xx_PICGCR_RST)
;
pic->gcr = MPC86xx_PICGCR_MODE;
if (ret)
return ret;
decrementer_count = get_tbclk() / CFG_HZ;
*decrementer_count = get_tbclk() / CFG_HZ;
debug("interrupt init: tbclk() = %d MHz, decrementer_count = %ld\n",
(get_tbclk() / 1000000),
decrementer_count);
set_dec(decrementer_count);
set_msr(get_msr() | MSR_EE);
debug("MSR = 0x%08lx, Decrementer reg = 0x%08lx\n",
get_msr(),
get_dec());
*decrementer_count);
#ifdef CONFIG_INTERRUPTS
volatile ccsr_pic_t *pic = &immr->im_pic;
pic->iivpr1 = 0x810001; /* 50220 enable mcm interrupts */
debug("iivpr1@%x = %x\n", &pic->iivpr1, pic->iivpr1);
@ -132,25 +77,6 @@ int interrupt_init(void)
return 0;
}
void enable_interrupts(void)
{
set_msr(get_msr() | MSR_EE);
}
/* returns flag if MSR_EE was set before */
int disable_interrupts(void)
{
ulong msr = get_msr();
set_msr(msr & ~MSR_EE);
return (msr & MSR_EE) != 0;
}
void increment_timestamp(void)
{
timestamp++;
}
/*
* timer_interrupt - gets called when the decrementer overflows,
* with interrupts disabled.
@ -161,50 +87,9 @@ void timer_interrupt_cpu(struct pt_regs *regs)
/* nothing to do here */
}
void timer_interrupt(struct pt_regs *regs)
{
/* call cpu specific function from $(CPU)/interrupts.c */
timer_interrupt_cpu(regs);
timestamp++;
/* Restore Decrementer Count */
set_dec(decrementer_count);
#if defined(CONFIG_WATCHDOG) || defined (CONFIG_HW_WATCHDOG)
if ((timestamp % (CFG_WATCHDOG_FREQ)) == 0)
WATCHDOG_RESET();
#endif /* CONFIG_WATCHDOG || CONFIG_HW_WATCHDOG */
#ifdef CONFIG_STATUS_LED
status_led_tick(timestamp);
#endif /* CONFIG_STATUS_LED */
#ifdef CONFIG_SHOW_ACTIVITY
board_show_activity(timestamp);
#endif /* CONFIG_SHOW_ACTIVITY */
}
void reset_timer(void)
{
timestamp = 0;
}
ulong get_timer(ulong base)
{
return timestamp - base;
}
void set_timer(ulong t)
{
timestamp = t;
}
/*
* Install and free a interrupt handler. Not implemented yet.
*/
void irq_install_handler(int vec, interrupt_handler_t *handler, void *arg)
{
}
@ -218,8 +103,6 @@ void irq_free_handler(int vec)
*/
int do_irqinfo(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
printf("\nInterrupt-unsupported:\n");
return 0;
}