2 * linux/arch/m68k/sun3/sun3ints.c -- Sun-3(x) Linux interrupt handling code
4 * This file is subject to the terms and conditions of the GNU General Public
5 * License. See the file COPYING in the main directory of this archive
9 #include <linux/types.h>
10 #include <linux/kernel.h>
11 #include <linux/sched.h>
12 #include <linux/kernel_stat.h>
13 #include <linux/interrupt.h>
14 #include <asm/intersil.h>
15 #include <asm/oplib.h>
16 #include <asm/sun3ints.h>
17 #include <asm/irq_regs.h>
18 #include <linux/seq_file.h>
20 extern void sun3_leds (unsigned char);
22 void sun3_disable_interrupts(void)
27 void sun3_enable_interrupts(void)
32 static int led_pattern[8] = {
39 volatile unsigned char* sun3_intreg;
41 void sun3_enable_irq(unsigned int irq)
43 *sun3_intreg |= (1 << irq);
46 void sun3_disable_irq(unsigned int irq)
48 *sun3_intreg &= ~(1 << irq);
51 static irqreturn_t sun3_int7(int irq, void *dev_id)
55 cnt = kstat_irqs_cpu(irq, 0);
57 sun3_leds(led_pattern[cnt % 16000 / 2000]);
61 static irqreturn_t sun3_int5(int irq, void *dev_id)
66 local_irq_save(flags);
76 cnt = kstat_irqs_cpu(irq, 0);
78 sun3_leds(led_pattern[cnt % 160 / 20]);
79 local_irq_restore(flags);
83 static irqreturn_t sun3_vec255(int irq, void *dev_id)
88 void __init sun3_init_IRQ(void)
92 m68k_setup_user_interrupt(VEC_USER, 128);
94 if (request_irq(IRQ_AUTO_5, sun3_int5, 0, "clock", NULL))
95 pr_err("Couldn't register %s interrupt\n", "int5");
96 if (request_irq(IRQ_AUTO_7, sun3_int7, 0, "nmi", NULL))
97 pr_err("Couldn't register %s interrupt\n", "int7");
98 if (request_irq(IRQ_USER+127, sun3_vec255, 0, "vec255", NULL))
99 pr_err("Couldn't register %s interrupt\n", "vec255");