#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"); }