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
dn_process_int(int irq,struct pt_regs * fp)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
dn_init_IRQ(void)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
dn_request_irq(unsigned int irq,void (* handler)(int,void *,struct pt_regs *),unsigned long flags,const char * devname,void * dev_id)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
dn_free_irq(unsigned int irq,void * dev_id)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
dn_enable_irq(unsigned int irq)90 void dn_enable_irq(unsigned int irq) {
91
92 printk("dn enable irq\n");
93
94 }
95
dn_disable_irq(unsigned int irq)96 void dn_disable_irq(unsigned int irq) {
97
98 printk("dn disable irq\n");
99
100 }
101
dn_get_irq_list(char * buf)102 int dn_get_irq_list(char *buf) {
103
104 printk("dn get irq list\n");
105
106 return 0;
107
108 }
109
dn_dummy_fb_init(long * mem_start)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
dn_nosound(unsigned long ignored)123 static void dn_nosound (unsigned long ignored) {
124
125 write_keyb_cmd(sizeof(BellOffCommand),BellOffCommand);
126
127 }
128
dn_mksound(unsigned int count,unsigned int ticks)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
dn_dummy_video_setup(char * options,int * ints)147 void dn_dummy_video_setup(char *options,int *ints) {
148
149 printk("no video yet\n");
150
151 }
152