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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/m68k/apollo/dn_ints.c
downloadlinux-2.6.34-ux500-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz
Linux-2.6.12-rc2v2.6.12-rc2
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!
Diffstat (limited to 'arch/m68k/apollo/dn_ints.c')
-rw-r--r--arch/m68k/apollo/dn_ints.c125
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 00000000000..a31259359a1
--- /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");
+
+}