From: Gabor Juhos <juhosg@openwrt.org>
Date: Mon, 14 Nov 2011 11:49:53 +0000 (+0000)
Subject: ar71xx: flush DDR writeback buffers for WMAC and PCIe on AR934X
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=e52269364a5014ff734e20aae606f6a89dce66a5;p=openwrt%2Fstaging%2Flinusw.git

ar71xx: flush DDR writeback buffers for WMAC and PCIe on AR934X

SVN-Revision: 29108
---

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