From e52269364a5014ff734e20aae606f6a89dce66a5 Mon Sep 17 00:00:00 2001
From: Gabor Juhos <juhosg@openwrt.org>
Date: Mon, 14 Nov 2011 11:49:53 +0000
Subject: [PATCH] ar71xx: flush DDR writeback buffers for WMAC and PCIe on
AR934X
SVN-Revision: 29108
---
target/linux/ar71xx/files/arch/mips/ar71xx/irq.c | 12 ++++++------
.../files/arch/mips/include/asm/mach-ar71xx/ar71xx.h | 1 +
2 files changed, 7 insertions(+), 6 deletions(-)
diff --git a/target/linux/ar71xx/files/arch/mips/ar71xx/irq.c b/target/linux/ar71xx/files/arch/mips/ar71xx/irq.c
index 7165ca97db..c4297d399a 100644
--- a/target/linux/ar71xx/files/arch/mips/ar71xx/irq.c
+++ b/target/linux/ar71xx/files/arch/mips/ar71xx/irq.c
@@ -239,14 +239,15 @@ static void ar934x_ip2_irq_dispatch(unsigned int irq, struct irq_desc *desc)
status = ar71xx_reset_rr(AR934X_RESET_REG_PCIE_WMAC_INT_STATUS);
- if (status & AR934X_PCIE_WMAC_INT_PCIE_ALL)
+ if (status & AR934X_PCIE_WMAC_INT_PCIE_ALL) {
+ ar71xx_ddr_flush(AR934X_DDR_REG_FLUSH_PCIE);
generic_handle_irq(AR934X_IP2_IRQ_PCIE);
-
- else if (status & AR934X_PCIE_WMAC_INT_WMAC_ALL)
+ } else if (status & AR934X_PCIE_WMAC_INT_WMAC_ALL) {
+ ar71xx_ddr_flush(AR934X_DDR_REG_FLUSH_WMAC);
generic_handle_irq(AR934X_IP2_IRQ_WMAC);
-
- else
+ } else {
spurious_interrupt();
+ }
enable_irq(irq);
}
@@ -297,7 +298,6 @@ static void ar933x_ip2_handler(void)
static void ar934x_ip2_handler(void)
{
- ar71xx_ddr_flush(AR934X_DDR_REG_FLUSH_PCIE);
do_IRQ(AR71XX_CPU_IRQ_IP2);
}
diff --git a/target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/ar71xx.h b/target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/ar71xx.h
index fe2d9a32bc..4068e91105 100644
--- a/target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/ar71xx.h
+++ b/target/linux/ar71xx/files/arch/mips/include/asm/mach-ar71xx/ar71xx.h
@@ -533,6 +533,7 @@ void ar71xx_gpio_function_setup(u32 set, u32 clear);
#define AR934X_DDR_REG_FLUSH_GE1 0xa0
#define AR934X_DDR_REG_FLUSH_USB 0xa4
#define AR934X_DDR_REG_FLUSH_PCIE 0xa8
+#define AR934X_DDR_REG_FLUSH_WMAC 0xac
#define PCI_WIN0_OFFS 0x10000000
--
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