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-rw-r--r--arch/m68knommu/kernel/irq.c3
-rw-r--r--arch/m68knommu/platform/coldfire/Makefile6
-rw-r--r--arch/m68knommu/platform/coldfire/intc-2.c93
3 files changed, 98 insertions, 4 deletions
diff --git a/arch/m68knommu/kernel/irq.c b/arch/m68knommu/kernel/irq.c
index 47f6af57e18e..f9965d7ee7c5 100644
--- a/arch/m68knommu/kernel/irq.c
+++ b/arch/m68knommu/kernel/irq.c
@@ -29,7 +29,8 @@ asmlinkage void do_IRQ(int irq, struct pt_regs *regs)
set_irq_regs(oldregs);
}
-#if !defined(CONFIG_M520x)
+#if !defined(CONFIG_M520x) && !defined(CONFIG_M523x) && \
+ !defined(CONFIG_M527x) && !defined(CONFIG_M528x)
static struct irq_chip m_irq_chip = {
.name = "M68K-INTC",
diff --git a/arch/m68knommu/platform/coldfire/Makefile b/arch/m68knommu/platform/coldfire/Makefile
index dd242db7daa1..bce9a62d3a13 100644
--- a/arch/m68knommu/platform/coldfire/Makefile
+++ b/arch/m68knommu/platform/coldfire/Makefile
@@ -18,11 +18,11 @@ obj-$(CONFIG_COLDFIRE) += clk.o dma.o entry.o vectors.o
obj-$(CONFIG_M5206) += timers.o
obj-$(CONFIG_M5206e) += timers.o
obj-$(CONFIG_M520x) += pit.o intc-simr.o
-obj-$(CONFIG_M523x) += pit.o dma_timer.o
+obj-$(CONFIG_M523x) += pit.o dma_timer.o intc-2.o
obj-$(CONFIG_M5249) += timers.o
-obj-$(CONFIG_M527x) += pit.o
+obj-$(CONFIG_M527x) += pit.o intc-2.o
obj-$(CONFIG_M5272) += timers.o
-obj-$(CONFIG_M528x) += pit.o
+obj-$(CONFIG_M528x) += pit.o intc-2.o
obj-$(CONFIG_M5307) += timers.o
obj-$(CONFIG_M532x) += timers.o
obj-$(CONFIG_M5407) += timers.o
diff --git a/arch/m68knommu/platform/coldfire/intc-2.c b/arch/m68knommu/platform/coldfire/intc-2.c
new file mode 100644
index 000000000000..5598c8b8661f
--- /dev/null
+++ b/arch/m68knommu/platform/coldfire/intc-2.c
@@ -0,0 +1,93 @@
+/*
+ * intc-1.c
+ *
+ * (C) Copyright 2009, Greg Ungerer <gerg@snapgear.com>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file COPYING in the main directory of this archive
+ * for more details.
+ */
+
+#include <linux/types.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/io.h>
+#include <asm/coldfire.h>
+#include <asm/mcfsim.h>
+#include <asm/traps.h>
+
+/*
+ * Each vector needs a unique priority and level asscoiated with it.
+ * We don't really care so much what they are, we don't rely on the
+ * tranditional priority interrupt scheme of the m68k/ColdFire.
+ */
+static u8 intc_intpri = 0x36;
+
+static void intc_irq_mask(unsigned int irq)
+{
+ if ((irq >= MCFINT_VECBASE) && (irq <= MCFINT_VECBASE + 128)) {
+ unsigned long imraddr;
+ u32 val, imrbit;
+
+ irq -= MCFINT_VECBASE;
+ imraddr = MCF_IPSBAR;
+ imraddr += (irq & 0x40) ? MCFICM_INTC1 : MCFICM_INTC0;
+ imraddr += (irq & 0x20) ? MCFINTC_IMRH : MCFINTC_IMRL;
+ imrbit = 0x1 << (irq & 0x1f);
+
+ val = __raw_readl(imraddr);
+ __raw_writel(val | imrbit, imraddr);
+ }
+}
+
+static void intc_irq_unmask(unsigned int irq)
+{
+ if ((irq >= MCFINT_VECBASE) && (irq <= MCFINT_VECBASE + 128)) {
+ unsigned long intaddr, imraddr, icraddr;
+ u32 val, imrbit;
+
+ irq -= MCFINT_VECBASE;
+ intaddr = MCF_IPSBAR;
+ intaddr += (irq & 0x40) ? MCFICM_INTC1 : MCFICM_INTC0;
+ imraddr = intaddr + ((irq & 0x20) ? MCFINTC_IMRH : MCFINTC_IMRL);
+ icraddr = intaddr + MCFINTC_ICR0 + (irq & 0x3f);
+ imrbit = 0x1 << (irq & 0x1f);
+
+ /* Don't set the "maskall" bit! */
+ if ((irq & 0x20) == 0)
+ imrbit |= 0x1;
+
+ if (__raw_readb(icraddr) == 0)
+ __raw_writeb(intc_intpri--, icraddr);
+
+ val = __raw_readl(imraddr);
+ __raw_writel(val & ~imrbit, imraddr);
+ }
+}
+
+static struct irq_chip intc_irq_chip = {
+ .name = "CF-INTC",
+ .mask = intc_irq_mask,
+ .unmask = intc_irq_unmask,
+};
+
+void __init init_IRQ(void)
+{
+ int irq;
+
+ init_vectors();
+
+ /* Mask all interrupt sources */
+ __raw_writel(0x1, MCF_IPSBAR + MCFICM_INTC0 + MCFINTC_IMRL);
+ __raw_writel(0x1, MCF_IPSBAR + MCFICM_INTC1 + MCFINTC_IMRL);
+
+ for (irq = 0; (irq < NR_IRQS); irq++) {
+ irq_desc[irq].status = IRQ_DISABLED;
+ irq_desc[irq].action = NULL;
+ irq_desc[irq].depth = 1;
+ irq_desc[irq].chip = &intc_irq_chip;
+ }
+}
+