1 files changed, 82 insertions, 0 deletions
diff --git a/arch/arm/cpu/ixp/interrupts.c b/arch/arm/cpu/ixp/interrupts.c
new file mode 100644
index 0000000..06a826a
--- /dev/null
+++ b/arch/arm/cpu/ixp/interrupts.c
@@ -0,0 +1,82 @@
+/*
+ * (C) Copyright 2006
+ * Stefan Roese, DENX Software Engineering, sr@denx.de.
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Marius Groeger <mgroeger@sysgo.de>
+ *
+ * (C) Copyright 2002
+ * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
+ * Alex Zuepke <azu@sysgo.de>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <asm/arch/ixp425.h>
+#include <asm/proc-armv/ptrace.h>
+
+struct _irq_handler {
+	void                *m_data;
+	void (*m_func)( void *data);
+};
+
+static struct _irq_handler IRQ_HANDLER[N_IRQS];
+
+static void default_isr(void *data)
+{
+	printf("default_isr():  called for IRQ %d, Interrupt Status=%x PR=%x\n",
+	       (int)data, *IXP425_ICIP, *IXP425_ICIH);
+}
+
+static int next_irq(void)
+{
+	return (((*IXP425_ICIH & 0x000000fc) >> 2) - 1);
+}
+
+void do_irq (struct pt_regs *pt_regs)
+{
+	int irq = next_irq();
+
+	IRQ_HANDLER[irq].m_func(IRQ_HANDLER[irq].m_data);
+}
+
+void irq_install_handler (int irq, interrupt_handler_t handle_irq, void *data)
+{
+	if (irq >= N_IRQS || !handle_irq)
+		return;
+
+	IRQ_HANDLER[irq].m_data = data;
+	IRQ_HANDLER[irq].m_func = handle_irq;
+}
+
+int arch_interrupt_init (void)
+{
+	int i;
+
+	/* install default interrupt handlers */
+	for (i = 0; i < N_IRQS; i++)
+		irq_install_handler(i, default_isr, (void *)i);
+
+	/* configure interrupts for IRQ mode */
+	*IXP425_ICLR = 0x00000000;
+
+	return (0);
+}