[MIPS] Support for the R5500-based NEC EMMA2RH Mark-eins board
Signed-off-by: dmitry pervushin <dpervushin@ru.mvista.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/emma2rh/common/irq.c b/arch/mips/emma2rh/common/irq.c
new file mode 100644
index 0000000..b075281
--- /dev/null
+++ b/arch/mips/emma2rh/common/irq.c
@@ -0,0 +1,108 @@
+/*
+ * arch/mips/emma2rh/common/irq.c
+ * This file is common irq dispatcher.
+ *
+ * Copyright (C) NEC Electronics Corporation 2005-2006
+ *
+ * This file is based on the arch/mips/ddb5xxx/ddb5477/irq.c
+ *
+ * Copyright 2001 MontaVista Software Inc.
+ *
+ * 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/config.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/types.h>
+
+#include <asm/i8259.h>
+#include <asm/system.h>
+#include <asm/mipsregs.h>
+#include <asm/debug.h>
+#include <asm/addrspace.h>
+#include <asm/bootinfo.h>
+
+#include <asm/emma2rh/emma2rh.h>
+
+/*
+ * the first level int-handler will jump here if it is a emma2rh irq
+ */
+asmlinkage void emma2rh_irq_dispatch(struct pt_regs *regs)
+{
+ u32 intStatus;
+ u32 bitmask;
+ u32 i;
+
+ intStatus = emma2rh_in32(EMMA2RH_BHIF_INT_ST_0)
+ & emma2rh_in32(EMMA2RH_BHIF_INT_EN_0);
+
+#ifdef EMMA2RH_SW_CASCADE
+ if (intStatus &
+ (1 << ((EMMA2RH_SW_CASCADE - EMMA2RH_IRQ_INT0) & (32 - 1)))) {
+ u32 swIntStatus;
+ swIntStatus = emma2rh_in32(EMMA2RH_BHIF_SW_INT)
+ & emma2rh_in32(EMMA2RH_BHIF_SW_INT_EN);
+ for (i = 0, bitmask = 1; i < 32; i++, bitmask <<= 1) {
+ if (swIntStatus & bitmask) {
+ do_IRQ(EMMA2RH_SW_IRQ_BASE + i, regs);
+ return;
+ }
+ }
+ }
+#endif
+
+ for (i = 0, bitmask = 1; i < 32; i++, bitmask <<= 1) {
+ if (intStatus & bitmask) {
+ do_IRQ(EMMA2RH_IRQ_BASE + i, regs);
+ return;
+ }
+ }
+
+ intStatus = emma2rh_in32(EMMA2RH_BHIF_INT_ST_1)
+ & emma2rh_in32(EMMA2RH_BHIF_INT_EN_1);
+
+#ifdef EMMA2RH_GPIO_CASCADE
+ if (intStatus &
+ (1 << ((EMMA2RH_GPIO_CASCADE - EMMA2RH_IRQ_INT0) & (32 - 1)))) {
+ u32 gpioIntStatus;
+ gpioIntStatus = emma2rh_in32(EMMA2RH_GPIO_INT_ST)
+ & emma2rh_in32(EMMA2RH_GPIO_INT_MASK);
+ for (i = 0, bitmask = 1; i < 32; i++, bitmask <<= 1) {
+ if (gpioIntStatus & bitmask) {
+ do_IRQ(EMMA2RH_GPIO_IRQ_BASE + i, regs);
+ return;
+ }
+ }
+ }
+#endif
+
+ for (i = 32, bitmask = 1; i < 64; i++, bitmask <<= 1) {
+ if (intStatus & bitmask) {
+ do_IRQ(EMMA2RH_IRQ_BASE + i, regs);
+ return;
+ }
+ }
+
+ intStatus = emma2rh_in32(EMMA2RH_BHIF_INT_ST_2)
+ & emma2rh_in32(EMMA2RH_BHIF_INT_EN_2);
+
+ for (i = 64, bitmask = 1; i < 96; i++, bitmask <<= 1) {
+ if (intStatus & bitmask) {
+ do_IRQ(EMMA2RH_IRQ_BASE + i, regs);
+ return;
+ }
+ }
+}