1 /*
  2 * linux/arch/m68k/sun3/sun3ints.c -- Sun-3(x) Linux interrupt handling code
  3 *
  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
  6 * for more details.
  7 */
  8
  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>
 19
 20extern void sun3_leds (unsigned char);
 21
 22void sun3_disable_interrupts(void)
 23{
 24	sun3_disable_irq(0);
 25}
 26
 27void sun3_enable_interrupts(void)
 28{
 29	sun3_enable_irq(0);
 30}
 31
 32static int led_pattern[8] = {
 33       ~(0x80), ~(0x01),
 34       ~(0x40), ~(0x02),
 35       ~(0x20), ~(0x04),
 36       ~(0x10), ~(0x08)
 37};
 38
 39volatile unsigned char* sun3_intreg;
 40
 41void sun3_enable_irq(unsigned int irq)
 42{
 43	*sun3_intreg |=  (1 << irq);
 44}
 45
 46void sun3_disable_irq(unsigned int irq)
 47{
 48	*sun3_intreg &= ~(1 << irq);
 49}
 50
 51static irqreturn_t sun3_int7(int irq, void *dev_id)
 52{
 53	unsigned int cnt;
 54
 55	cnt = kstat_irqs_cpu(irq, 0);
 56	if (!(cnt % 2000))
 57		sun3_leds(led_pattern[cnt % 16000 / 2000]);
 58	return IRQ_HANDLED;
 59}
 60
 61static irqreturn_t sun3_int5(int irq, void *dev_id)
 62{
 63	unsigned long flags;
 64	unsigned int cnt;
 65
 66	local_irq_save(flags);
 67#ifdef CONFIG_SUN3
 68	intersil_clear();
 69#endif
 70	sun3_disable_irq(5);
 71	sun3_enable_irq(5);
 72#ifdef CONFIG_SUN3
 73	intersil_clear();
 74#endif
 75	legacy_timer_tick(1);
 
 76	cnt = kstat_irqs_cpu(irq, 0);
 77	if (!(cnt % 20))
 78		sun3_leds(led_pattern[cnt % 160 / 20]);
 79	local_irq_restore(flags);
 80	return IRQ_HANDLED;
 81}
 82
 83static irqreturn_t sun3_vec255(int irq, void *dev_id)
 84{
 85	return IRQ_HANDLED;
 86}
 87
 88void __init sun3_init_IRQ(void)
 89{
 90	*sun3_intreg = 1;
 91
 92	m68k_setup_user_interrupt(VEC_USER, 128);
 93
 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");
100}

 1 /*
 2 * linux/arch/m68k/sun3/sun3ints.c -- Sun-3(x) Linux interrupt handling code
 3 *
 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
 6 * for more details.
 7 */
 8
 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>
20
21extern void sun3_leds (unsigned char);
22
23void sun3_disable_interrupts(void)
24{
25	sun3_disable_irq(0);
26}
27
28void sun3_enable_interrupts(void)
29{
30	sun3_enable_irq(0);
31}
32
33static int led_pattern[8] = {
34       ~(0x80), ~(0x01),
35       ~(0x40), ~(0x02),
36       ~(0x20), ~(0x04),
37       ~(0x10), ~(0x08)
38};
39
40volatile unsigned char* sun3_intreg;
41
42void sun3_enable_irq(unsigned int irq)
43{
44	*sun3_intreg |=  (1 << irq);
45}
46
47void sun3_disable_irq(unsigned int irq)
48{
49	*sun3_intreg &= ~(1 << irq);
50}
51
52static irqreturn_t sun3_int7(int irq, void *dev_id)
53{
54	unsigned int cnt;
55
56	cnt = kstat_irqs_cpu(irq, 0);
57	if (!(cnt % 2000))
58		sun3_leds(led_pattern[cnt % 16000 / 2000]);
59	return IRQ_HANDLED;
60}
61
62static irqreturn_t sun3_int5(int irq, void *dev_id)
63{
 
64	unsigned int cnt;
65
 
66#ifdef CONFIG_SUN3
67	intersil_clear();
68#endif
69	sun3_disable_irq(5);
70	sun3_enable_irq(5);
71#ifdef CONFIG_SUN3
72	intersil_clear();
73#endif
74	xtime_update(1);
75	update_process_times(user_mode(get_irq_regs()));
76	cnt = kstat_irqs_cpu(irq, 0);
77	if (!(cnt % 20))
78		sun3_leds(led_pattern[cnt % 160 / 20]);
 
79	return IRQ_HANDLED;
80}
81
82static irqreturn_t sun3_vec255(int irq, void *dev_id)
83{
84	return IRQ_HANDLED;
85}
86
87void __init sun3_init_IRQ(void)
88{
89	*sun3_intreg = 1;
90
91	m68k_setup_user_interrupt(VEC_USER, 128);
92
93	if (request_irq(IRQ_AUTO_5, sun3_int5, 0, "clock", NULL))
94		pr_err("Couldn't register %s interrupt\n", "int5");
95	if (request_irq(IRQ_AUTO_7, sun3_int7, 0, "nmi", NULL))
96		pr_err("Couldn't register %s interrupt\n", "int7");
97	if (request_irq(IRQ_USER+127, sun3_vec255, 0, "vec255", NULL))
98		pr_err("Couldn't register %s interrupt\n", "vec255");
99}