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authorGabor Juhos <juhosg@openwrt.org>2011-06-29 08:57:28 +0000
committerGabor Juhos <juhosg@openwrt.org>2011-06-29 08:57:28 +0000
commit59bff8bf180e32e8c3813b028e4f5b34ca104dc0 (patch)
treeb164ac71d6a47dc0e1143b78a8a9c34803d2bf45 /target/linux/ar71xx/files
parent9d6af600e1560d0722d204b606bfccde9f4adf9e (diff)
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ar71xx: use separate handlers for IP2 interrupts
SVN-Revision: 27307
Diffstat (limited to 'target/linux/ar71xx/files')
-rw-r--r--target/linux/ar71xx/files/arch/mips/ar71xx/irq.c68
1 files changed, 48 insertions, 20 deletions
diff --git a/target/linux/ar71xx/files/arch/mips/ar71xx/irq.c b/target/linux/ar71xx/files/arch/mips/ar71xx/irq.c
index 5d1e1c60e9..9758f63f30 100644
--- a/target/linux/ar71xx/files/arch/mips/ar71xx/irq.c
+++ b/target/linux/ar71xx/files/arch/mips/ar71xx/irq.c
@@ -23,8 +23,6 @@
#include <asm/mach-ar71xx/ar71xx.h>
-static int ip2_flush_reg;
-
static void ar71xx_gpio_irq_dispatch(void)
{
void __iomem *base = ar71xx_gpio_base;
@@ -249,6 +247,46 @@ static void __init ar71xx_misc_irq_init(void)
setup_irq(AR71XX_CPU_IRQ_MISC, &ar71xx_misc_irqaction);
}
+/*
+ * The IP2 line is tied to a PCI/WMAC device. Drivers for these
+ * devices typically allocate coherent DMA memory for the descriptor
+ * ring, however the DMA controller may still have some unsynchronized
+ * data in the FIFO.
+ * Issue a flush in the handlers to ensure that the driver sees
+ * the update.
+ */
+static void ar71xx_ip2_handler(void)
+{
+ ar71xx_ddr_flush(AR71XX_DDR_REG_FLUSH_PCI);
+ do_IRQ(AR71XX_CPU_IRQ_IP2);
+}
+
+static void ar724x_ip2_handler(void)
+{
+ ar71xx_ddr_flush(AR724X_DDR_REG_FLUSH_PCIE);
+ do_IRQ(AR71XX_CPU_IRQ_IP2);
+}
+
+static void ar913x_ip2_handler(void)
+{
+ ar71xx_ddr_flush(AR91XX_DDR_REG_FLUSH_WMAC);
+ do_IRQ(AR71XX_CPU_IRQ_IP2);
+}
+
+static void ar933x_ip2_handler(void)
+{
+ ar71xx_ddr_flush(AR933X_DDR_REG_FLUSH_WMAC);
+ do_IRQ(AR71XX_CPU_IRQ_IP2);
+}
+
+static void ar934x_ip2_handler(void)
+{
+ ar71xx_ddr_flush(AR934X_DDR_REG_FLUSH_PCIE);
+ do_IRQ(AR71XX_CPU_IRQ_IP2);
+}
+
+static void (*ip2_handler)(void);
+
asmlinkage void plat_irq_dispatch(void)
{
unsigned long pending;
@@ -258,17 +296,8 @@ asmlinkage void plat_irq_dispatch(void)
if (pending & STATUSF_IP7)
do_IRQ(AR71XX_CPU_IRQ_TIMER);
- else if (pending & STATUSF_IP2) {
- /*
- * This IRQ is meant for a PCI device. Drivers for PCI devices
- * typically allocate coherent DMA memory for the descriptor
- * ring, however the DMA controller may still have some
- * unsynchronized data in the FIFO.
- * Issue a flush here to ensure that the driver sees the update.
- */
- ar71xx_ddr_flush(ip2_flush_reg);
- do_IRQ(AR71XX_CPU_IRQ_IP2);
- }
+ else if (pending & STATUSF_IP2)
+ ip2_handler();
else if (pending & STATUSF_IP4)
do_IRQ(AR71XX_CPU_IRQ_GE0);
@@ -282,8 +311,7 @@ asmlinkage void plat_irq_dispatch(void)
else if (pending & STATUSF_IP6)
ar71xx_misc_irq_dispatch();
- else
- spurious_interrupt();
+ spurious_interrupt();
}
void __init arch_init_irq(void)
@@ -292,29 +320,29 @@ void __init arch_init_irq(void)
case AR71XX_SOC_AR7130:
case AR71XX_SOC_AR7141:
case AR71XX_SOC_AR7161:
- ip2_flush_reg = AR71XX_DDR_REG_FLUSH_PCI;
+ ip2_handler = ar71xx_ip2_handler;
break;
case AR71XX_SOC_AR7240:
case AR71XX_SOC_AR7241:
case AR71XX_SOC_AR7242:
- ip2_flush_reg = AR724X_DDR_REG_FLUSH_PCIE;
+ ip2_handler = ar724x_ip2_handler;
break;
case AR71XX_SOC_AR9130:
case AR71XX_SOC_AR9132:
- ip2_flush_reg = AR91XX_DDR_REG_FLUSH_WMAC;
+ ip2_handler = ar913x_ip2_handler;
break;
case AR71XX_SOC_AR9330:
case AR71XX_SOC_AR9331:
- ip2_flush_reg = AR933X_DDR_REG_FLUSH_WMAC;
+ ip2_handler = ar933x_ip2_handler;
break;
case AR71XX_SOC_AR9341:
case AR71XX_SOC_AR9342:
case AR71XX_SOC_AR9344:
- ip2_flush_reg = AR934X_DDR_REG_FLUSH_PCIE;
+ ip2_handler = ar934x_ip2_handler;
break;
default: