1 files changed, 125 insertions, 0 deletions
diff --git a/arch/m68k/apollo/dn_ints.c b/arch/m68k/apollo/dn_ints.c
new file mode 100644
index 0000000..a312593
--- /dev/null
+++ b/arch/m68k/apollo/dn_ints.c
@@ -0,0 +1,125 @@
+#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");
+
+}