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/segment.h>
15 #include <asm/intersil.h>
16 #include <asm/oplib.h>
17 #include <asm/sun3ints.h>
18 #include <asm/irq_regs.h>
19 #include <linux/seq_file.h>
21 extern void sun3_leds (unsigned char);
23 void sun3_disable_interrupts(void)
28 void sun3_enable_interrupts(void)
33 static int led_pattern[8] = {
40 volatile unsigned char* sun3_intreg;
42 void sun3_enable_irq(unsigned int irq)
44 *sun3_intreg |= (1 << irq);
47 void sun3_disable_irq(unsigned int irq)
49 *sun3_intreg &= ~(1 << irq);
52 static irqreturn_t sun3_int7(int irq, void *dev_id)
56 *sun3_intreg |= (1 << irq);
57 cnt = kstat_irqs_cpu(irq, 0);
59 sun3_leds(led_pattern[cnt % 16000 / 2000]);
63 static irqreturn_t sun3_int5(int irq, void *dev_id)
70 *sun3_intreg |= (1 << irq);
75 update_process_times(user_mode(get_irq_regs()));
76 cnt = kstat_irqs_cpu(irq, 0);
78 sun3_leds(led_pattern[cnt % 160 / 20]);
82 static irqreturn_t sun3_vec255(int irq, void *dev_id)
88 static void sun3_inthandle(unsigned int irq, struct pt_regs *fp)
90 *sun3_intreg &= ~(1 << irq);
95 static void sun3_irq_enable(struct irq_data *data)
97 sun3_enable_irq(data->irq);
100 static void sun3_irq_disable(struct irq_data *data)
102 sun3_disable_irq(data->irq);
105 static struct irq_chip sun3_irq_chip = {
107 .irq_startup = m68k_irq_startup,
108 .irq_shutdown = m68k_irq_shutdown,
109 .irq_enable = sun3_irq_enable,
110 .irq_disable = sun3_irq_disable,
113 void __init sun3_init_IRQ(void)
117 m68k_setup_auto_interrupt(sun3_inthandle);
118 m68k_setup_irq_controller(&sun3_irq_chip, handle_simple_irq,
120 m68k_setup_user_interrupt(VEC_USER, 128, NULL);
122 if (request_irq(IRQ_AUTO_5, sun3_int5, 0, "int5", NULL))
123 pr_err("Couldn't register %s interrupt\n", "int5");
124 if (request_irq(IRQ_AUTO_7, sun3_int7, 0, "int7", NULL))
125 pr_err("Couldn't register %s interrupt\n", "int7");
126 if (request_irq(IRQ_USER+127, sun3_vec255, 0, "vec255", NULL))
127 pr_err("Couldn't register %s interrupt\n", "vec255");