6b13f685e
김민수
BSP 최초 추가
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#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/delay.h>
#include <asm/irq.h>
#include <asm/macintosh.h>
#include <asm/macints.h>
#include <asm/mac_via.h>
#include <asm/mac_psc.h>
#include <asm/mac_oss.h>
#include <asm/mac_iop.h>
#include <asm/mac_baboon.h>
#include <asm/hwtest.h>
#include <asm/irq_regs.h>
#define SHUTUP_SONIC
irqreturn_t mac_nmi_handler(int, void *);
irqreturn_t mac_debug_handler(int, void *);
static unsigned int mac_irq_startup(struct irq_data *);
static void mac_irq_shutdown(struct irq_data *);
static struct irq_chip mac_irq_chip = {
.name = "mac",
.irq_enable = mac_irq_enable,
.irq_disable = mac_irq_disable,
.irq_startup = mac_irq_startup,
.irq_shutdown = mac_irq_shutdown,
};
void __init mac_init_IRQ(void)
{
#ifdef DEBUG_MACINTS
printk("mac_init_IRQ(): Setting things up...
");
#endif
m68k_setup_irq_controller(&mac_irq_chip, handle_simple_irq, IRQ_USER,
NUM_MAC_SOURCES - IRQ_USER);
#ifdef SHUTUP_SONIC
printk("Killing onboard sonic... ");
if (hwreg_present((void*)(0x50f0a000))) {
*(long *)(0x50f0a014) = 0x7fffL;
*(long *)(0x50f0a010) = 0L;
}
printk("Done.
");
#endif /* SHUTUP_SONIC */
if (oss_present)
oss_register_interrupts();
else
via_register_interrupts();
if (psc_present)
psc_register_interrupts();
if (baboon_present)
baboon_register_interrupts();
iop_register_interrupts();
if (request_irq(IRQ_AUTO_7, mac_nmi_handler, 0, "NMI",
mac_nmi_handler))
pr_err("Couldn't register NMI
");
#ifdef DEBUG_MACINTS
printk("mac_init_IRQ(): Done!
");
#endif
}
void mac_irq_enable(struct irq_data *data)
{
int irq = data->irq;
int irq_src = IRQ_SRC(irq);
switch(irq_src) {
case 1:
case 2:
case 7:
if (oss_present)
oss_irq_enable(irq);
else
via_irq_enable(irq);
break;
case 3:
case 4:
case 5:
case 6:
if (psc_present)
psc_irq_enable(irq);
else if (oss_present)
oss_irq_enable(irq);
break;
case 8:
if (baboon_present)
baboon_irq_enable(irq);
break;
}
}
void mac_irq_disable(struct irq_data *data)
{
int irq = data->irq;
int irq_src = IRQ_SRC(irq);
switch(irq_src) {
case 1:
case 2:
case 7:
if (oss_present)
oss_irq_disable(irq);
else
via_irq_disable(irq);
break;
case 3:
case 4:
case 5:
case 6:
if (psc_present)
psc_irq_disable(irq);
else if (oss_present)
oss_irq_disable(irq);
break;
case 8:
if (baboon_present)
baboon_irq_disable(irq);
break;
}
}
static unsigned int mac_irq_startup(struct irq_data *data)
{
int irq = data->irq;
if (IRQ_SRC(irq) == 7 && !oss_present)
via_nubus_irq_startup(irq);
else
mac_irq_enable(data);
return 0;
}
static void mac_irq_shutdown(struct irq_data *data)
{
int irq = data->irq;
if (IRQ_SRC(irq) == 7 && !oss_present)
via_nubus_irq_shutdown(irq);
else
mac_irq_disable(data);
}
static int num_debug[8];
irqreturn_t mac_debug_handler(int irq, void *dev_id)
{
if (num_debug[irq] < 10) {
printk("DEBUG: Unexpected IRQ %d
", irq);
num_debug[irq]++;
}
return IRQ_HANDLED;
}
static int in_nmi;
static volatile int nmi_hold;
irqreturn_t mac_nmi_handler(int irq, void *dev_id)
{
int i;
in_nmi++;
for (i=0; i<100; i++)
udelay(1000);
if (in_nmi == 1) {
nmi_hold = 1;
printk("... pausing, press NMI to resume ...");
} else {
printk(" ok!
");
nmi_hold = 0;
}
barrier();
while (nmi_hold == 1)
udelay(1000);
if (console_loglevel >= 8) {
#if 0
struct pt_regs *fp = get_irq_regs();
show_state();
printk("PC: %08lx
SR: %04x SP: %p
", fp->pc, fp->sr, fp);
printk("d0: %08lx d1: %08lx d2: %08lx d3: %08lx
",
fp->d0, fp->d1, fp->d2, fp->d3);
printk("d4: %08lx d5: %08lx a0: %08lx a1: %08lx
",
fp->d4, fp->d5, fp->a0, fp->a1);
if (STACK_MAGIC != *(unsigned long *)current->kernel_stack_page)
printk("Corrupted stack page
");
printk("Process %s (pid: %d, stackpage=%08lx)
",
current->comm, current->pid, current->kernel_stack_page);
if (intr_count == 1)
dump_stack((struct frame *)fp);
#else
#endif
}
in_nmi--;
return IRQ_HANDLED;
}
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