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!
diff --git a/arch/arm/mach-epxa10db/irq.c b/arch/arm/mach-epxa10db/irq.c
new file mode 100644
index 0000000..9bf927e
--- /dev/null
+++ b/arch/arm/mach-epxa10db/irq.c
@@ -0,0 +1,82 @@
+/*
+ * linux/arch/arm/mach-epxa10db/irq.c
+ *
+ * Copyright (C) 2001 Altera Corporation
+ *
+ * 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 <linux/init.h>
+#include <linux/ioport.h>
+#include <linux/stddef.h>
+#include <linux/timer.h>
+#include <linux/list.h>
+#include <asm/io.h>
+#include <asm/hardware.h>
+#include <asm/irq.h>
+#include <asm/mach/irq.h>
+#include <asm/arch/platform.h>
+#include <asm/arch/int_ctrl00.h>
+
+
+static void epxa_mask_irq(unsigned int irq)
+{
+ writel(1 << irq, INT_MC(IO_ADDRESS(EXC_INT_CTRL00_BASE)));
+}
+
+static void epxa_unmask_irq(unsigned int irq)
+{
+ writel(1 << irq, INT_MS(IO_ADDRESS(EXC_INT_CTRL00_BASE)));
+}
+
+
+static struct irqchip epxa_irq_chip = {
+ .ack = epxa_mask_irq,
+ .mask = epxa_mask_irq,
+ .unmask = epxa_unmask_irq,
+};
+
+static struct resource irq_resource = {
+ .name = "irq_handler",
+ .start = IO_ADDRESS(EXC_INT_CTRL00_BASE),
+ .end = IO_ADDRESS(INT_PRIORITY_FC(EXC_INT_CTRL00_BASE))+4,
+};
+
+void __init epxa10db_init_irq(void)
+{
+ unsigned int i;
+
+ request_resource(&iomem_resource, &irq_resource);
+
+ /*
+ * This bit sets up the interrupt controller using
+ * the 6 PLD interrupts mode (the default) each
+ * irqs is assigned a priority which is the same
+ * as its interrupt number. This scheme is used because
+ * its easy, but you may want to change it depending
+ * on the contents of your PLD
+ */
+
+ writel(3,INT_MODE(IO_ADDRESS(EXC_INT_CTRL00_BASE)));
+ for (i = 0; i < NR_IRQS; i++){
+ writel(i+1, INT_PRIORITY_P0(IO_ADDRESS(EXC_INT_CTRL00_BASE)) + (4*i));
+ set_irq_chip(i,&epxa_irq_chip);
+ set_irq_handler(i,do_level_IRQ);
+ set_irq_flags(i, IRQF_VALID | IRQF_PROBE);
+ }
+
+ /* Disable all interrupts */
+ writel(-1,INT_MC(IO_ADDRESS(EXC_INT_CTRL00_BASE)));
+
+}