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Commit aebdb152 authored by Greg Ungerer's avatar Greg Ungerer Committed by Christoph Hellwig
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[PATCH] move common timer and vector code for m68knommu/ColdFire/5249 

This patch moves common ColdFire vector and timer procesing code from
the local per-processor config.c for the 5249 ColdFire sub-architecture.
All ColdFire CPU's have the same timer and basic vector setup, seems
crazy to repeat this code for each of 6 ColdFire CPU varients.
parent c697ffba
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Showing with 22 additions and 158 deletions
arch/m68knommu/platform/5249/config.c
View file @ aebdb152
......@@ -25,7 +25,11 @@
/***************************************************************************/
void coldfire_profile_init(void);
void coldfire_tick(void);
void coldfire_timer_init(void (*handler)(int, void *, struct pt_regs *));
unsigned long coldfire_timer_offset(void);
void coldfire_trap_init(void);
void coldfire_reset(void);
/***************************************************************************/
......@@ -39,104 +43,7 @@ unsigned int dma_base_addr[MAX_M68K_DMA_CHANNELS] = {
MCF_MBAR + MCFDMA_BASE3,
};
unsigned int dma_device_address[MAX_M68K_DMA_CHANNELS];
/***************************************************************************/
void coldfire_tick(void)
{
volatile unsigned char *timerp;
/* Reset the ColdFire timer */
timerp = (volatile unsigned char *) (MCF_MBAR + MCFTIMER_BASE1);
timerp[MCFTIMER_TER] = MCFTIMER_TER_CAP | MCFTIMER_TER_REF;
}
/***************************************************************************/
void coldfire_timer_init(void (*handler)(int, void *, struct pt_regs *))
{
volatile unsigned short *timerp;
volatile unsigned char *icrp;
/* Set up TIMER 1 as poll clock */
timerp = (volatile unsigned short *) (MCF_MBAR + MCFTIMER_BASE1);
timerp[MCFTIMER_TMR] = MCFTIMER_TMR_DISABLE;
timerp[MCFTIMER_TRR] = (unsigned short) ((MCF_CLK / 16) / HZ);
timerp[MCFTIMER_TMR] = MCFTIMER_TMR_ENORI | MCFTIMER_TMR_CLK16 |
MCFTIMER_TMR_RESTART | MCFTIMER_TMR_ENABLE;
icrp = (volatile unsigned char *) (MCF_MBAR + MCFSIM_TIMER1ICR);
*icrp = MCFSIM_ICR_AUTOVEC | MCFSIM_ICR_LEVEL5 | MCFSIM_ICR_PRI3;
request_irq(29, handler, SA_INTERRUPT, "ColdFire Timer", NULL);
#ifdef CONFIG_HIGHPROFILE
coldfire_profile_init();
#endif
mcf_setimr(mcf_getimr() & ~MCFSIM_IMR_TIMER1);
}
/***************************************************************************/
#ifdef CONFIG_HIGHPROFILE
/***************************************************************************/
#define PROFILEHZ 1013
/*
* Use the other timer to provide high accuracy profiling info.
*/
void coldfire_profile_tick(int irq, void *dummy, struct pt_regs *regs)
{
volatile unsigned char *timerp;
/* Reset the ColdFire timer2 */
timerp = (volatile unsigned char *) (MCF_MBAR + MCFTIMER_BASE2);
timerp[MCFTIMER_TER] = MCFTIMER_TER_CAP | MCFTIMER_TER_REF;
if (!user_mode(regs)) {
if (prof_buffer && current->pid) {
extern int _stext;
unsigned long ip = instruction_pointer(regs);
ip -= (unsigned long) &_stext;
ip >>= prof_shift;
if (ip < prof_len)
prof_buffer[ip]++;
}
}
}
void coldfire_profile_init(void)
{
volatile unsigned short *timerp;
volatile unsigned char *icrp;
printk("PROFILE: lodging timer2=%d as profile timer\n", PROFILEHZ);
/* Set up TIMER 2 as poll clock */
timerp = (volatile unsigned short *) (MCF_MBAR + MCFTIMER_BASE2);
timerp[MCFTIMER_TMR] = MCFTIMER_TMR_DISABLE;
timerp[MCFTIMER_TRR] = (unsigned short) ((MCF_CLK / 16) / PROFILEHZ);
timerp[MCFTIMER_TMR] = MCFTIMER_TMR_ENORI | MCFTIMER_TMR_CLK16 |
MCFTIMER_TMR_RESTART | MCFTIMER_TMR_ENABLE;
icrp = (volatile unsigned char *) (MCF_MBAR + MCFSIM_TIMER2ICR);
*icrp = MCFSIM_ICR_AUTOVEC | MCFSIM_ICR_LEVEL7 | MCFSIM_ICR_PRI3;
request_irq(31, coldfire_profile_tick, (SA_INTERRUPT | IRQ_FLG_FAST),
"Profile Timer", NULL);
mcf_setimr(mcf_getimr() & ~MCFSIM_IMR_TIMER2);
}
/***************************************************************************/
#endif /* CONFIG_HIGHPROFILE */
/***************************************************************************/
/*
* Program the vector to be an auto-vectored.
*/
void mcf_autovector(unsigned int vec)
{
......@@ -152,78 +59,35 @@ void mcf_autovector(unsigned int vec)
/***************************************************************************/
extern e_vector *_ramvec;
void set_evector(int vecnum, void (*handler)(void))
void mcf_settimericr(unsigned int timer, unsigned int level)
{
if (vecnum >= 0 && vecnum <= 255)
_ramvec[vecnum] = handler;
}
/***************************************************************************/
/* assembler routines */
asmlinkage void buserr(void);
asmlinkage void trap(void);
asmlinkage void system_call(void);
asmlinkage void inthandler(void);
void __init coldfire_trap_init(void)
{
int i;
#ifndef ENABLE_dBUG
mcf_setimr(MCFSIM_IMR_MASKALL);
#endif
/*
* There is a common trap handler and common interrupt
* handler that handle almost every vector. We treat
* the system call and bus error special, they get their
* own first level handlers.
*/
#ifndef ENABLE_dBUG
for (i = 3; (i <= 23); i++)
_ramvec[i] = trap;
for (i = 33; (i <= 63); i++)
_ramvec[i] = trap;
#endif
for (i = 24; (i <= 30); i++)
_ramvec[i] = inthandler;
#ifndef ENABLE_dBUG
_ramvec[31] = inthandler; // Disables the IRQ7 button
#endif
for (i = 64; (i < 255); i++)
_ramvec[i] = inthandler;
_ramvec[255] = 0;
_ramvec[2] = buserr;
_ramvec[32] = system_call;
volatile unsigned char *icrp;
unsigned int icr, imr;
if (timer <= 2) {
switch (timer) {
case 2: icr = MCFSIM_TIMER2ICR; imr = MCFSIM_IMR_TIMER2; break;
default: icr = MCFSIM_TIMER1ICR; imr = MCFSIM_IMR_TIMER1; break;
}
icrp = (volatile unsigned char *) (MCF_MBAR + icr);
*icrp = MCFSIM_ICR_AUTOVEC | (level << 2) | MCFSIM_ICR_PRI3;
mcf_setimr(mcf_getimr() & ~imr);
}
}
/***************************************************************************/
void config_BSP(char *commandp, int size)
{
mcf_setimr(MCFSIM_IMR_MASKALL);
memset(commandp, 0, size);
mach_sched_init = coldfire_timer_init;
mach_tick = coldfire_tick;
mach_gettimeoffset = coldfire_timer_offset;
mach_trap_init = coldfire_trap_init;
mach_reset = coldfire_reset;
}
/***************************************************************************/
#ifdef TRAP_DBG_INTERRUPT
asmlinkage void dbginterrupt_c(struct frame *fp)
{
extern void dump(struct pt_regs *fp);
printk("%s(%d): BUS ERROR TRAP\n", __FILE__, __LINE__);
dump((struct pt_regs *) fp);
asm("halt");
}
#endif
/***************************************************************************/
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