aboutsummaryrefslogtreecommitdiff
path: root/arch/m32r/kernel/irq.c
diff options
context:
space:
mode:
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/m32r/kernel/irq.c
Linux-2.6.12-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/m32r/kernel/irq.c')
-rw-r--r--arch/m32r/kernel/irq.c91
1 files changed, 91 insertions, 0 deletions
diff --git a/arch/m32r/kernel/irq.c b/arch/m32r/kernel/irq.c
new file mode 100644
index 00000000000..1ce63926a3c
--- /dev/null
+++ b/arch/m32r/kernel/irq.c
@@ -0,0 +1,91 @@
+/*
+ * linux/arch/m32r/kernel/irq.c
+ *
+ * Copyright (c) 2003, 2004 Hitoshi Yamamoto
+ * Copyright (c) 2004 Hirokazu Takata <takata at linux-m32r.org>
+ */
+
+/*
+ * linux/arch/i386/kernel/irq.c
+ *
+ * Copyright (C) 1992, 1998 Linus Torvalds, Ingo Molnar
+ *
+ * This file contains the lowest level m32r-specific interrupt
+ * entry and irq statistics code. All the remaining irq logic is
+ * done by the generic kernel/irq/ code and in the
+ * m32r-specific irq controller code.
+ */
+
+#include <linux/kernel_stat.h>
+#include <linux/interrupt.h>
+#include <linux/seq_file.h>
+#include <linux/module.h>
+#include <asm/uaccess.h>
+
+atomic_t irq_err_count;
+atomic_t irq_mis_count;
+
+/*
+ * Generic, controller-independent functions:
+ */
+
+int show_interrupts(struct seq_file *p, void *v)
+{
+ int i = *(loff_t *) v, j;
+ struct irqaction * action;
+ unsigned long flags;
+
+ if (i == 0) {
+ seq_printf(p, " ");
+ for (j=0; j<NR_CPUS; j++)
+ if (cpu_online(j))
+ seq_printf(p, "CPU%d ",j);
+ seq_putc(p, '\n');
+ }
+
+ if (i < NR_IRQS) {
+ spin_lock_irqsave(&irq_desc[i].lock, flags);
+ action = irq_desc[i].action;
+ if (!action)
+ goto skip;
+ seq_printf(p, "%3d: ",i);
+#ifndef CONFIG_SMP
+ seq_printf(p, "%10u ", kstat_irqs(i));
+#else
+ for (j = 0; j < NR_CPUS; j++)
+ if (cpu_online(j))
+ seq_printf(p, "%10u ", kstat_cpu(j).irqs[i]);
+#endif
+ seq_printf(p, " %14s", irq_desc[i].handler->typename);
+ seq_printf(p, " %s", action->name);
+
+ for (action=action->next; action; action = action->next)
+ seq_printf(p, ", %s", action->name);
+
+ seq_putc(p, '\n');
+skip:
+ spin_unlock_irqrestore(&irq_desc[i].lock, flags);
+ } else if (i == NR_IRQS) {
+ seq_printf(p, "ERR: %10u\n", atomic_read(&irq_err_count));
+ seq_printf(p, "MIS: %10u\n", atomic_read(&irq_mis_count));
+ }
+ return 0;
+}
+
+/*
+ * do_IRQ handles all normal device IRQ's (the special
+ * SMP cross-CPU interrupts have their own specific
+ * handlers).
+ */
+asmlinkage unsigned int do_IRQ(int irq, struct pt_regs *regs)
+{
+ irq_enter();
+
+#ifdef CONFIG_DEBUG_STACKOVERFLOW
+ /* FIXME M32R */
+#endif
+ __do_IRQ(irq, regs);
+ irq_exit();
+
+ return 1;
+}