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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 *sun3_intreg |= (1 << irq);
55 if (!(kstat_cpu(0).irqs[irq] % 2000))
56 sun3_leds(led_pattern[(kstat_cpu(0).irqs[irq] % 16000) / 2000]);
57 return IRQ_HANDLED;
58}
59
60static irqreturn_t sun3_int5(int irq, void *dev_id)
61{
62#ifdef CONFIG_SUN3
63 intersil_clear();
64#endif
65 *sun3_intreg |= (1 << irq);
66#ifdef CONFIG_SUN3
67 intersil_clear();
68#endif
69 xtime_update(1);
70 update_process_times(user_mode(get_irq_regs()));
71 if (!(kstat_cpu(0).irqs[irq] % 20))
72 sun3_leds(led_pattern[(kstat_cpu(0).irqs[irq] % 160) / 20]);
73 return IRQ_HANDLED;
74}
75
76static irqreturn_t sun3_vec255(int irq, void *dev_id)
77{
78// intersil_clear();
79 return IRQ_HANDLED;
80}
81
82static void sun3_inthandle(unsigned int irq, struct pt_regs *fp)
83{
84 *sun3_intreg &= ~(1 << irq);
85
86 __m68k_handle_int(irq, fp);
87}
88
89static struct irq_controller sun3_irq_controller = {
90 .name = "sun3",
91 .lock = __SPIN_LOCK_UNLOCKED(sun3_irq_controller.lock),
92 .startup = m68k_irq_startup,
93 .shutdown = m68k_irq_shutdown,
94 .enable = sun3_enable_irq,
95 .disable = sun3_disable_irq,
96};
97
98void __init sun3_init_IRQ(void)
99{
100 *sun3_intreg = 1;
101
102 m68k_setup_auto_interrupt(sun3_inthandle);
103 m68k_setup_irq_controller(&sun3_irq_controller, IRQ_AUTO_1, 7);
104 m68k_setup_user_interrupt(VEC_USER, 128, NULL);
105
106 if (request_irq(IRQ_AUTO_5, sun3_int5, 0, "int5", NULL))
107 pr_err("Couldn't register %s interrupt\n", "int5");
108 if (request_irq(IRQ_AUTO_7, sun3_int7, 0, "int7", NULL))
109 pr_err("Couldn't register %s interrupt\n", "int7");
110 if (request_irq(IRQ_USER+127, sun3_vec255, 0, "vec255", NULL))
111 pr_err("Couldn't register %s interrupt\n", "vec255");
112}
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 long flags;
65 unsigned int cnt;
66
67 local_irq_save(flags);
68#ifdef CONFIG_SUN3
69 intersil_clear();
70#endif
71 sun3_disable_irq(5);
72 sun3_enable_irq(5);
73#ifdef CONFIG_SUN3
74 intersil_clear();
75#endif
76 legacy_timer_tick(1);
77 cnt = kstat_irqs_cpu(irq, 0);
78 if (!(cnt % 20))
79 sun3_leds(led_pattern[cnt % 160 / 20]);
80 local_irq_restore(flags);
81 return IRQ_HANDLED;
82}
83
84static irqreturn_t sun3_vec255(int irq, void *dev_id)
85{
86 return IRQ_HANDLED;
87}
88
89void __init sun3_init_IRQ(void)
90{
91 *sun3_intreg = 1;
92
93 m68k_setup_user_interrupt(VEC_USER, 128);
94
95 if (request_irq(IRQ_AUTO_5, sun3_int5, 0, "clock", NULL))
96 pr_err("Couldn't register %s interrupt\n", "int5");
97 if (request_irq(IRQ_AUTO_7, sun3_int7, 0, "nmi", NULL))
98 pr_err("Couldn't register %s interrupt\n", "int7");
99 if (request_irq(IRQ_USER+127, sun3_vec255, 0, "vec255", NULL))
100 pr_err("Couldn't register %s interrupt\n", "vec255");
101}