Commit | Line | Data |
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1da177e4 LT |
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 | ||
1da177e4 LT |
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> | |
2850bc27 | 18 | #include <asm/irq_regs.h> |
1da177e4 LT |
19 | #include <linux/seq_file.h> |
20 | ||
21 | extern void sun3_leds (unsigned char); | |
1da177e4 LT |
22 | |
23 | void sun3_disable_interrupts(void) | |
24 | { | |
25 | sun3_disable_irq(0); | |
26 | } | |
27 | ||
28 | void sun3_enable_interrupts(void) | |
29 | { | |
30 | sun3_enable_irq(0); | |
31 | } | |
32 | ||
07b81259 | 33 | static int led_pattern[8] = { |
1da177e4 LT |
34 | ~(0x80), ~(0x01), |
35 | ~(0x40), ~(0x02), | |
36 | ~(0x20), ~(0x04), | |
37 | ~(0x10), ~(0x08) | |
38 | }; | |
39 | ||
40 | volatile unsigned char* sun3_intreg; | |
41 | ||
1da177e4 LT |
42 | void sun3_enable_irq(unsigned int irq) |
43 | { | |
ebba61d5 | 44 | *sun3_intreg |= (1 << irq); |
1da177e4 LT |
45 | } |
46 | ||
47 | void sun3_disable_irq(unsigned int irq) | |
48 | { | |
ebba61d5 | 49 | *sun3_intreg &= ~(1 << irq); |
1da177e4 LT |
50 | } |
51 | ||
2850bc27 | 52 | static irqreturn_t sun3_int7(int irq, void *dev_id) |
1da177e4 | 53 | { |
40455132 GU |
54 | unsigned int cnt; |
55 | ||
40455132 GU |
56 | cnt = kstat_irqs_cpu(irq, 0); |
57 | if (!(cnt % 2000)) | |
58 | sun3_leds(led_pattern[cnt % 16000 / 2000]); | |
1da177e4 LT |
59 | return IRQ_HANDLED; |
60 | } | |
61 | ||
2850bc27 | 62 | static irqreturn_t sun3_int5(int irq, void *dev_id) |
1da177e4 | 63 | { |
40455132 GU |
64 | unsigned int cnt; |
65 | ||
1da177e4 LT |
66 | #ifdef CONFIG_SUN3 |
67 | intersil_clear(); | |
68 | #endif | |
7f88d2c0 TB |
69 | sun3_disable_irq(5); |
70 | sun3_enable_irq(5); | |
1da177e4 LT |
71 | #ifdef CONFIG_SUN3 |
72 | intersil_clear(); | |
73 | #endif | |
e53f276b | 74 | xtime_update(1); |
2850bc27 | 75 | update_process_times(user_mode(get_irq_regs())); |
40455132 GU |
76 | cnt = kstat_irqs_cpu(irq, 0); |
77 | if (!(cnt % 20)) | |
78 | sun3_leds(led_pattern[cnt % 160 / 20]); | |
1da177e4 LT |
79 | return IRQ_HANDLED; |
80 | } | |
81 | ||
2850bc27 | 82 | static irqreturn_t sun3_vec255(int irq, void *dev_id) |
1da177e4 | 83 | { |
1da177e4 LT |
84 | return IRQ_HANDLED; |
85 | } | |
86 | ||
66a3f820 | 87 | void __init sun3_init_IRQ(void) |
1da177e4 | 88 | { |
ebba61d5 | 89 | *sun3_intreg = 1; |
1da177e4 | 90 | |
f30a6484 | 91 | m68k_setup_user_interrupt(VEC_USER, 128); |
1da177e4 | 92 | |
7f88d2c0 | 93 | if (request_irq(IRQ_AUTO_5, sun3_int5, 0, "clock", NULL)) |
07e449b5 | 94 | pr_err("Couldn't register %s interrupt\n", "int5"); |
7f88d2c0 | 95 | if (request_irq(IRQ_AUTO_7, sun3_int7, 0, "nmi", NULL)) |
07e449b5 GU |
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"); | |
1da177e4 | 99 | } |