patch-2.1.87 linux/arch/m68k/apollo/dn_ints.c

• Lines: 167
• Date: Thu Feb 12 16:30:12 1998
• Orig file: v2.1.86/linux/arch/m68k/apollo/dn_ints.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.86/linux/arch/m68k/apollo/dn_ints.c linux/arch/m68k/apollo/dn_ints.c
@@ -0,0 +1,166 @@
+#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");
+
+}