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Diffstat (limited to 'arch/m68k/apollo/dn_ints.c')
-rw-r--r--arch/m68k/apollo/dn_ints.c137
1 files changed, 28 insertions, 109 deletions
diff --git a/arch/m68k/apollo/dn_ints.c b/arch/m68k/apollo/dn_ints.c
index a31259359a12..9fe07803797b 100644
--- a/arch/m68k/apollo/dn_ints.c
+++ b/arch/m68k/apollo/dn_ints.c
@@ -1,125 +1,44 @@
1#include <linux/types.h> 1#include <linux/interrupt.h>
2#include <linux/kernel.h>
3#include <linux/jiffies.h>
4#include <linux/kernel_stat.h>
5#include <linux/timer.h>
6 2
7#include <asm/system.h>
8#include <asm/irq.h> 3#include <asm/irq.h>
9#include <asm/traps.h> 4#include <asm/traps.h>
10#include <asm/page.h>
11#include <asm/machdep.h>
12#include <asm/apollohw.h> 5#include <asm/apollohw.h>
13#include <asm/errno.h>
14 6
15static irq_handler_t dn_irqs[16]; 7void dn_process_int(unsigned int irq, struct pt_regs *fp)
16
17irqreturn_t dn_process_int(int irq, struct pt_regs *fp)
18{ 8{
19 irqreturn_t res = IRQ_NONE; 9 m68k_handle_int(irq, fp);
20
21 if(dn_irqs[irq-160].handler) {
22 res = dn_irqs[irq-160].handler(irq,dn_irqs[irq-160].dev_id,fp);
23 } else {
24 printk("spurious irq %d occurred\n",irq);
25 }
26
27 *(volatile unsigned char *)(pica)=0x20;
28 *(volatile unsigned char *)(picb)=0x20;
29
30 return res;
31}
32
33void dn_init_IRQ(void) {
34
35 int i;
36
37 for(i=0;i<16;i++) {
38 dn_irqs[i].handler=NULL;
39 dn_irqs[i].flags=IRQ_FLG_STD;
40 dn_irqs[i].dev_id=NULL;
41 dn_irqs[i].devname=NULL;
42 }
43
44}
45
46int dn_request_irq(unsigned int irq, irqreturn_t (*handler)(int, void *, struct pt_regs *), unsigned long flags, const char *devname, void *dev_id) {
47
48 if((irq<0) || (irq>15)) {
49 printk("Trying to request invalid IRQ\n");
50 return -ENXIO;
51 }
52
53 if(!dn_irqs[irq].handler) {
54 dn_irqs[irq].handler=handler;
55 dn_irqs[irq].flags=IRQ_FLG_STD;
56 dn_irqs[irq].dev_id=dev_id;
57 dn_irqs[irq].devname=devname;
58 if(irq<8)
59 *(volatile unsigned char *)(pica+1)&=~(1<<irq);
60 else
61 *(volatile unsigned char *)(picb+1)&=~(1<<(irq-8));
62
63 return 0;
64 }
65 else {
66 printk("Trying to request already assigned irq %d\n",irq);
67 return -ENXIO;
68 }
69
70}
71
72void dn_free_irq(unsigned int irq, void *dev_id) {
73
74 if((irq<0) || (irq>15)) {
75 printk("Trying to free invalid IRQ\n");
76 return ;
77 }
78
79 if(irq<8)
80 *(volatile unsigned char *)(pica+1)|=(1<<irq);
81 else
82 *(volatile unsigned char *)(picb+1)|=(1<<(irq-8));
83
84 dn_irqs[irq].handler=NULL;
85 dn_irqs[irq].flags=IRQ_FLG_STD;
86 dn_irqs[irq].dev_id=NULL;
87 dn_irqs[irq].devname=NULL;
88
89 return ;
90
91}
92
93void dn_enable_irq(unsigned int irq) {
94
95 printk("dn enable irq\n");
96
97}
98
99void dn_disable_irq(unsigned int irq) {
100
101 printk("dn disable irq\n");
102 10
11 *(volatile unsigned char *)(pica)=0x20;
12 *(volatile unsigned char *)(picb)=0x20;
103} 13}
104 14
105int show_dn_interrupts(struct seq_file *p, void *v) { 15int apollo_irq_startup(unsigned int irq)
106 16{
107 printk("dn get irq list\n"); 17 if (irq < 8)
108 18 *(volatile unsigned char *)(pica+1) &= ~(1 << irq);
109 return 0; 19 else
110 20 *(volatile unsigned char *)(picb+1) &= ~(1 << (irq - 8));
21 return 0;
111} 22}
112 23
113struct fb_info *dn_dummy_fb_init(long *mem_start) { 24void apollo_irq_shutdown(unsigned int irq)
114 25{
115 printk("fb init\n"); 26 if (irq < 8)
116 27 *(volatile unsigned char *)(pica+1) |= (1 << irq);
117 return NULL; 28 else
118 29 *(volatile unsigned char *)(picb+1) |= (1 << (irq - 8));
119} 30}
120 31
121void dn_dummy_video_setup(char *options,int *ints) { 32static struct irq_controller apollo_irq_controller = {
33 .name = "apollo",
34 .lock = SPIN_LOCK_UNLOCKED,
35 .startup = apollo_irq_startup,
36 .shutdown = apollo_irq_shutdown,
37};
122 38
123 printk("no video yet\n");
124 39
40void dn_init_IRQ(void)
41{
42 m68k_setup_user_interrupt(VEC_USER + 96, 16, dn_process_int);
43 m68k_setup_irq_controller(&apollo_irq_controller, IRQ_APOLLO, 16);
125} 44}