openwrtv3/target/linux/brcm47xx/patches-3.0/0011-bcm47xx-fix-irq-assignment-for-new-SoCs.patch

From 1c44f60e3fd9336d19f56a67c1efc1129fd728a6 Mon Sep 17 00:00:00 2001
From: Hauke Mehrtens <hauke@hauke-m.de>
Date: Mon, 6 Jun 2011 00:07:38 +0200
Subject: [PATCH 11/26] bcm47xx: fix irq assignment for new SoCs.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
---
 arch/mips/bcm47xx/irq.c |   12 ++++++++++++
 1 files changed, 12 insertions(+), 0 deletions(-)

--- a/arch/mips/bcm47xx/irq.c
+++ b/arch/mips/bcm47xx/irq.c
@@ -26,6 +26,7 @@
 #include <linux/interrupt.h>
 #include <linux/irq.h>
 #include <asm/irq_cpu.h>
+#include <bcm47xx.h>
 
 void plat_irq_dispatch(void)
 {
@@ -51,5 +52,16 @@ void plat_irq_dispatch(void)
 
 void __init arch_init_irq(void)
 {
+#ifdef CONFIG_BCM47XX_BCMA
+	if (bcm47xx_bus_type == BCM47XX_BUS_TYPE_BCMA) {
+		bcma_write32(bcm47xx_bus.bcma.bus.drv_mips.core,
+			     BCMA_MIPS_MIPS74K_INTMASK(5), 1 << 31);
+		/*
+		 * the kernel reads the timer irq from some register and thinks
+		 * it's #5, but we offset it by 2 and route to #7
+		 */
+		cp0_compare_irq = 7;
+	}
+#endif
 	mips_cpu_irq_init();
 }