forked from luck/tmp_suning_uos_patched
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
126 lines
2.3 KiB
C
126 lines
2.3 KiB
C
#include <linux/types.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/jiffies.h>
|
|
#include <linux/kernel_stat.h>
|
|
#include <linux/timer.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>
|
|
#include <asm/errno.h>
|
|
|
|
static irq_handler_t dn_irqs[16];
|
|
|
|
irqreturn_t dn_process_int(int irq, struct pt_regs *fp)
|
|
{
|
|
irqreturn_t res = IRQ_NONE;
|
|
|
|
if(dn_irqs[irq-160].handler) {
|
|
res = dn_irqs[irq-160].handler(irq,dn_irqs[irq-160].dev_id,fp);
|
|
} else {
|
|
printk("spurious irq %d occurred\n",irq);
|
|
}
|
|
|
|
*(volatile unsigned char *)(pica)=0x20;
|
|
*(volatile unsigned char *)(picb)=0x20;
|
|
|
|
return res;
|
|
}
|
|
|
|
void dn_init_IRQ(void) {
|
|
|
|
int i;
|
|
|
|
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, irqreturn_t (*handler)(int, void *, struct pt_regs *), unsigned long flags, const char *devname, void *dev_id) {
|
|
|
|
if((irq<0) || (irq>15)) {
|
|
printk("Trying to request invalid 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 *)(pica+1)&=~(1<<irq);
|
|
else
|
|
*(volatile unsigned char *)(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) {
|
|
|
|
if((irq<0) || (irq>15)) {
|
|
printk("Trying to free invalid IRQ\n");
|
|
return ;
|
|
}
|
|
|
|
if(irq<8)
|
|
*(volatile unsigned char *)(pica+1)|=(1<<irq);
|
|
else
|
|
*(volatile unsigned char *)(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 show_dn_interrupts(struct seq_file *p, void *v) {
|
|
|
|
printk("dn get irq list\n");
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
struct fb_info *dn_dummy_fb_init(long *mem_start) {
|
|
|
|
printk("fb init\n");
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
void dn_dummy_video_setup(char *options,int *ints) {
|
|
|
|
printk("no video yet\n");
|
|
|
|
}
|