import of upstream 2.4.34.4 from kernel.org
[linux-2.4.git] / arch / m68k / apollo / dn_ints.c
1 #include <linux/types.h>
2 #include <linux/kernel.h>
3 #include <linux/sched.h>
4 #include <linux/kernel_stat.h>
5
6 #include <asm/system.h>
7 #include <asm/irq.h>
8 #include <asm/traps.h>
9 #include <asm/page.h>
10 #include <asm/machdep.h>
11 #include <asm/apollohw.h>
12
13 static irq_handler_t dn_irqs[16];
14
15 void dn_process_int(int irq, struct pt_regs *fp) {
16
17
18   if(dn_irqs[irq-160].handler) {
19     dn_irqs[irq-160].handler(irq,dn_irqs[irq-160].dev_id,fp);
20   }
21   else {
22     printk("spurious irq %d occurred\n",irq);
23   }
24
25   *(volatile unsigned char *)(pica)=0x20;
26   *(volatile unsigned char *)(picb)=0x20;
27
28 }
29
30 void dn_init_IRQ(void) {
31
32   int i;
33
34   for(i=0;i<16;i++) {
35     dn_irqs[i].handler=NULL;
36     dn_irqs[i].flags=IRQ_FLG_STD;
37     dn_irqs[i].dev_id=NULL;
38     dn_irqs[i].devname=NULL;
39   }
40   
41 }
42
43 int dn_request_irq(unsigned int irq, void (*handler)(int, void *, struct pt_regs *), unsigned long flags, const char *devname, void *dev_id) {
44
45   if((irq<0) || (irq>15)) {
46     printk("Trying to request invalid IRQ\n");
47     return -ENXIO;
48   }
49
50   if(!dn_irqs[irq].handler) {
51     dn_irqs[irq].handler=handler;
52     dn_irqs[irq].flags=IRQ_FLG_STD;
53     dn_irqs[irq].dev_id=dev_id;
54     dn_irqs[irq].devname=devname;
55     if(irq<8)
56       *(volatile unsigned char *)(pica+1)&=~(1<<irq);
57     else
58       *(volatile unsigned char *)(picb+1)&=~(1<<(irq-8));
59
60     return 0;
61   }
62   else {
63     printk("Trying to request already assigned irq %d\n",irq);
64     return -ENXIO;
65   }
66
67 }
68
69 void dn_free_irq(unsigned int irq, void *dev_id) {
70
71   if((irq<0) || (irq>15)) {
72     printk("Trying to free invalid IRQ\n");
73     return ;
74   }
75
76   if(irq<8)
77     *(volatile unsigned char *)(pica+1)|=(1<<irq);
78   else
79     *(volatile unsigned char *)(picb+1)|=(1<<(irq-8));  
80
81   dn_irqs[irq].handler=NULL;
82   dn_irqs[irq].flags=IRQ_FLG_STD;
83   dn_irqs[irq].dev_id=NULL;
84   dn_irqs[irq].devname=NULL;
85
86   return ;
87
88 }
89
90 void dn_enable_irq(unsigned int irq) {
91
92   printk("dn enable irq\n");
93
94 }
95
96 void dn_disable_irq(unsigned int irq) {
97
98   printk("dn disable irq\n");
99
100 }
101
102 int dn_get_irq_list(char *buf) {
103
104   printk("dn get irq list\n");
105
106   return 0;
107
108 }
109
110 struct fb_info *dn_dummy_fb_init(long *mem_start) {
111
112   printk("fb init\n");
113
114   return NULL;
115
116 }
117
118 #ifdef CONFIG_VT
119 extern void write_keyb_cmd(u_short length, u_char *cmd);
120 static char BellOnCommand[] =  { 0xFF, 0x21, 0x81 },
121                     BellOffCommand[] = { 0xFF, 0x21, 0x82 };
122
123 static void dn_nosound (unsigned long ignored) {
124
125         write_keyb_cmd(sizeof(BellOffCommand),BellOffCommand);
126
127 }
128
129 void dn_mksound( unsigned int count, unsigned int ticks ) {
130
131         static struct timer_list sound_timer = { function: dn_nosound };
132
133         del_timer( &sound_timer );
134         if(count) {
135                 write_keyb_cmd(sizeof(BellOnCommand),BellOnCommand);
136                 if (ticks) {
137                 sound_timer.expires = jiffies + ticks;
138                         add_timer( &sound_timer );
139                 }
140         }
141         else
142                 write_keyb_cmd(sizeof(BellOffCommand),BellOffCommand);
143 }
144 #endif /* CONFIG_VT */
145
146
147 void dn_dummy_video_setup(char *options,int *ints) {
148
149   printk("no video yet\n");
150
151 }