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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 | #include <linux/types.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/kernel_stat.h>
#include <asm/system.h>
#include <asm/irq.h>
#include <asm/traps.h>
#include <asm/page.h>
#include <asm/machdep.h>
#include <asm/apollohw.h>
static irq_handler_t dn_irqs[16];
extern void write_keyb_cmd(u_short length, u_char *cmd);
static char BellOnCommand[] = { 0xFF, 0x21, 0x81 },
BellOffCommand[] = { 0xFF, 0x21, 0x82 };
void dn_process_int(int irq, struct pt_regs *fp) {
#if 0
unsigned char x;
#endif
#if 0
printk("Aha DN interrupt ! : %d\n",irq);
#endif
if(dn_irqs[irq-160].handler) {
dn_irqs[irq-160].handler(irq,dn_irqs[irq-160].dev_id,fp);
}
else {
printk("spurious irq %d occured\n",irq);
}
#if 0
printk("*(0x10803) %02x\n",*(volatile unsigned char *)(IO_BASE+0x10803));
x=*(volatile unsigned char *)(IO_BASE+0x10805);
#endif
*(volatile unsigned char *)(IO_BASE+0x11000)=0x20;
*(volatile unsigned char *)(IO_BASE+0x11100)=0x20;
}
void dn_init_IRQ(void) {
int i;
printk("Init IRQ\n");
for(i=0;i<16;i++) {
dn_irqs[i].handler=NULL;
dn_irqs[i].flags=IRQ_FLG_STD;
dn_irqs[i].dev_id=NULL;
dn_irqs[i].devname=NULL;
}
}
int dn_request_irq(unsigned int irq, void (*handler)(int, void *, struct pt_regs *), unsigned long flags, const char *devname, void *dev_id) {
printk("dn request IRQ\n");
if((irq<0) || (irq>15)) {
printk("Trying to request illegal IRQ\n");
return -ENXIO;
}
if(!dn_irqs[irq].handler) {
dn_irqs[irq].handler=handler;
dn_irqs[irq].flags=IRQ_FLG_STD;
dn_irqs[irq].dev_id=dev_id;
dn_irqs[irq].devname=devname;
if(irq<8)
*(volatile unsigned char *)(IO_BASE+PICA+1)&=~(1<<irq);
else
*(volatile unsigned char *)(IO_BASE+PICB+1)&=~(1<<(irq-8));
return 0;
}
else {
printk("Trying to request already assigned irq %d\n",irq);
return -ENXIO;
}
}
void dn_free_irq(unsigned int irq, void *dev_id) {
printk("dn free irq\n");
if((irq<0) || (irq>15)) {
printk("Trying to free illegal IRQ\n");
return ;
}
if(irq<8)
*(volatile unsigned char *)(IO_BASE+PICA+1)|=(1<<irq);
else
*(volatile unsigned char *)(IO_BASE+PICB+1)|=(1<<(irq-8));
dn_irqs[irq].handler=NULL;
dn_irqs[irq].flags=IRQ_FLG_STD;
dn_irqs[irq].dev_id=NULL;
dn_irqs[irq].devname=NULL;
return ;
}
void dn_enable_irq(unsigned int irq) {
printk("dn enable irq\n");
}
void dn_disable_irq(unsigned int irq) {
printk("dn disable irq\n");
}
int dn_get_irq_list(char *buf) {
printk("dn get irq list\n");
return 0;
}
struct fb_info *dn_dummy_fb_init(long *mem_start) {
printk("fb init\n");
return NULL;
}
static void dn_nosound (unsigned long ignored) {
write_keyb_cmd(sizeof(BellOffCommand),BellOffCommand);
}
void dn_mksound( unsigned int count, unsigned int ticks ) {
static struct timer_list sound_timer = { NULL, NULL, 0, 0,
dn_nosound };
del_timer( &sound_timer );
if(count) {
write_keyb_cmd(sizeof(BellOnCommand),BellOnCommand);
if (ticks) {
sound_timer.expires = jiffies + ticks;
add_timer( &sound_timer );
}
}
else
write_keyb_cmd(sizeof(BellOffCommand),BellOffCommand);
}
void dn_dummy_video_setup(char *options,int *ints) {
printk("no video yet\n");
}
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