111 lines
2.5 KiB
C
111 lines
2.5 KiB
C
/*
|
|
* linux/arch/m68k/sun3/sun3ints.c -- Sun-3(x) Linux interrupt handling code
|
|
*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file COPYING in the main directory of this archive
|
|
* for more details.
|
|
*/
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/kernel_stat.h>
|
|
#include <linux/interrupt.h>
|
|
#include <asm/segment.h>
|
|
#include <asm/intersil.h>
|
|
#include <asm/oplib.h>
|
|
#include <asm/sun3ints.h>
|
|
#include <linux/seq_file.h>
|
|
|
|
extern void sun3_leds (unsigned char);
|
|
|
|
void sun3_disable_interrupts(void)
|
|
{
|
|
sun3_disable_irq(0);
|
|
}
|
|
|
|
void sun3_enable_interrupts(void)
|
|
{
|
|
sun3_enable_irq(0);
|
|
}
|
|
|
|
int led_pattern[8] = {
|
|
~(0x80), ~(0x01),
|
|
~(0x40), ~(0x02),
|
|
~(0x20), ~(0x04),
|
|
~(0x10), ~(0x08)
|
|
};
|
|
|
|
volatile unsigned char* sun3_intreg;
|
|
|
|
void sun3_enable_irq(unsigned int irq)
|
|
{
|
|
*sun3_intreg |= (1 << irq);
|
|
}
|
|
|
|
void sun3_disable_irq(unsigned int irq)
|
|
{
|
|
*sun3_intreg &= ~(1 << irq);
|
|
}
|
|
|
|
static irqreturn_t sun3_int7(int irq, void *dev_id, struct pt_regs *fp)
|
|
{
|
|
*sun3_intreg |= (1 << irq);
|
|
if (!(kstat_cpu(0).irqs[irq] % 2000))
|
|
sun3_leds(led_pattern[(kstat_cpu(0).irqs[irq] % 16000) / 2000]);
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static irqreturn_t sun3_int5(int irq, void *dev_id, struct pt_regs *fp)
|
|
{
|
|
#ifdef CONFIG_SUN3
|
|
intersil_clear();
|
|
#endif
|
|
*sun3_intreg |= (1 << irq);
|
|
#ifdef CONFIG_SUN3
|
|
intersil_clear();
|
|
#endif
|
|
do_timer(fp);
|
|
#ifndef CONFIG_SMP
|
|
update_process_times(user_mode(fp));
|
|
#endif
|
|
if (!(kstat_cpu(0).irqs[irq] % 20))
|
|
sun3_leds(led_pattern[(kstat_cpu(0).irqs[irq] % 160) / 20]);
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static irqreturn_t sun3_vec255(int irq, void *dev_id, struct pt_regs *fp)
|
|
{
|
|
// intersil_clear();
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static void sun3_inthandle(unsigned int irq, struct pt_regs *fp)
|
|
{
|
|
*sun3_intreg &= ~(1 << irq);
|
|
|
|
m68k_handle_int(irq, fp);
|
|
}
|
|
|
|
static struct irq_controller sun3_irq_controller = {
|
|
.name = "sun3",
|
|
.lock = SPIN_LOCK_UNLOCKED,
|
|
.startup = m68k_irq_startup,
|
|
.shutdown = m68k_irq_shutdown,
|
|
.enable = sun3_enable_irq,
|
|
.disable = sun3_disable_irq,
|
|
};
|
|
|
|
void sun3_init_IRQ(void)
|
|
{
|
|
*sun3_intreg = 1;
|
|
|
|
m68k_setup_auto_interrupt(sun3_inthandle);
|
|
m68k_setup_irq_controller(&sun3_irq_controller, IRQ_AUTO_1, 7);
|
|
m68k_setup_user_interrupt(VEC_USER, 192, NULL);
|
|
|
|
request_irq(IRQ_AUTO_5, sun3_int5, 0, "int5", NULL);
|
|
request_irq(IRQ_AUTO_7, sun3_int7, 0, "int7", NULL);
|
|
request_irq(IRQ_USER+127, sun3_vec255, 0, "vec255", NULL);
|
|
}
|