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mpc85xx: remove redudant code with lib_ppc/interrupts.c 

For some reason we duplicated the majority of code in lib_ppc/interrupts.c
not show 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 14:46:36 -05:00
parent 9490a7f1a9
commit 9cff4448a9
1 changed files with 12 additions and 97 deletions
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109
cpu/mpc85xx/interrupts.c
View File

@ -31,64 +31,20 @@
#include <watchdog.h>
#include <command.h>
#include <asm/processor.h>
#include <ppc_asm.tmpl>
unsigned decrementer_count; /* count value for 1e6/HZ microseconds */
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));
asm volatile("isync");
}
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));
}
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);
}
int interrupt_init (void)
int interrupt_init_cpu(unsigned long *decrementer_count)
{
volatile ccsr_pic_t *pic = (void *)(CFG_MPC85xx_PIC_ADDR);
pic->gcr = MPC85xx_PICGCR_RST;
while (pic->gcr & MPC85xx_PICGCR_RST);
while (pic->gcr & MPC85xx_PICGCR_RST)
;
pic->gcr = MPC85xx_PICGCR_M;
decrementer_count = get_tbclk() / CFG_HZ;
*decrementer_count = get_tbclk() / CFG_HZ;
/* PIE is same as DIE, dec interrupt enable */
mtspr(SPRN_TCR, TCR_PIE);
set_dec (decrementer_count);
set_msr (get_msr () | MSR_EE);
#ifdef CONFIG_INTERRUPTS
pic->iivpr1 = 0x810001; /* 50220 enable ecm interrupts */
@ -123,9 +79,7 @@ int interrupt_init (void)
return (0);
}
/*
* Install and free a interrupt handler. Not implemented yet.
*/
/* Install and free a interrupt handler. Not implemented yet. */
void
irq_install_handler(int vec, interrupt_handler_t *handler, void *arg)
@ -139,55 +93,16 @@ irq_free_handler(int vec)
return;
}
/****************************************************************************/
volatile ulong timestamp = 0;
/*
* timer_interrupt - gets called when the decrementer overflows,
* with interrupts disabled.
* Trivial implementation - no need to be really accurate.
*/
void timer_interrupt(struct pt_regs *regs)
void timer_interrupt_cpu(struct pt_regs *regs)
{
timestamp++;
set_dec (decrementer_count);
/* PIS is same as DIS, dec interrupt status */
mtspr(SPRN_TSR, TSR_PIS);
#if defined(CONFIG_WATCHDOG)
if ((timestamp % 1000) == 0)
reset_85xx_watchdog();
#endif /* CONFIG_WATCHDOG */
}
void reset_timer (void)
{
timestamp = 0;
}
ulong get_timer (ulong base)
{
return (timestamp - base);
}
void set_timer (ulong t)
{
timestamp = t;
}
#if defined(CONFIG_CMD_IRQ)
/*******************************************************************************
*
* irqinfo - print information about PCI devices,not implemented.
*
*/
int
do_irqinfo(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
/* irqinfo - print information about PCI devices,not implemented. */
int do_irqinfo(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
printf ("\nInterrupt-unsupported:\n");
return 0;
}
#endif