From: Francois Romieu <romieu@fr.zoreil.com>
Date: Thu, 26 Jan 2012 11:59:08 +0000 (+0100)
Subject: r8169: irq mask helpers.
X-Git-Tag: v2.6.39-400.9.0~423^2~19^2~11^2~21
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=d85054a8e182c3739a4441b11bcc5d8bd3df90ed;p=users%2Fjedix%2Flinux-maple.git

r8169: irq mask helpers.

(cherry picked from commit 9085cdfa2f9f04d8678465748e2cced6e3f02e26)
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Cc: Hayes Wang <hayeswang@realtek.com>
Signed-off-by: Joe Jin <joe.jin@oracle.com>
---

diff --git a/drivers/net/r8169.c b/drivers/net/r8169.c
index 4f94deca970c..a5cddede9af8 100644
--- a/drivers/net/r8169.c
+++ b/drivers/net/r8169.c
@@ -1183,6 +1183,29 @@ static u8 rtl8168d_efuse_read(void __iomem *ioaddr, int reg_addr)
 	return value;
 }
 
+static u16 rtl_get_events(struct rtl8169_private *tp)
+{
+	void __iomem *ioaddr = tp->mmio_addr;
+
+	return RTL_R16(IntrStatus);
+}
+
+static void rtl_ack_events(struct rtl8169_private *tp, u16 bits)
+{
+	void __iomem *ioaddr = tp->mmio_addr;
+
+	RTL_W16(IntrStatus, bits);
+	mmiowb();
+}
+
+static void rtl_irq_disable(struct rtl8169_private *tp)
+{
+	void __iomem *ioaddr = tp->mmio_addr;
+
+	RTL_W16(IntrMask, 0);
+	mmiowb();
+}
+
 static void rtl_irq_enable(struct rtl8169_private *tp, u16 bits)
 {
 	void __iomem *ioaddr = tp->mmio_addr;
@@ -1194,8 +1217,8 @@ static void rtl8169_irq_mask_and_ack(struct rtl8169_private *tp)
 {
 	void __iomem *ioaddr = tp->mmio_addr;
 
-	RTL_W16(IntrMask, 0x0000);
-	RTL_W16(IntrStatus, tp->intr_event);
+	rtl_irq_disable(tp);
+	rtl_ack_events(tp, tp->intr_event);
 	RTL_R8(ChipCmd);
 }
 
@@ -4054,11 +4077,11 @@ rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 
 	rtl_init_rxcfg(tp);
 
-	RTL_W16(IntrMask, 0x0000);
+	rtl_irq_disable(tp);
 
 	rtl_hw_reset(tp);
 
-	RTL_W16(IntrStatus, 0xffff);
+	rtl_ack_events(tp, 0xffff);
 
 	pci_set_master(pdev);
 
@@ -5772,12 +5795,12 @@ static irqreturn_t rtl8169_interrupt(int irq, void *dev_instance)
 	struct rtl8169_private *tp = netdev_priv(dev);
 	void __iomem *ioaddr = tp->mmio_addr;
 	int handled = 0;
-	int status;
+	u16 status;
 
 	/* loop handling interrupts until we have no new ones or
 	 * we hit a invalid/hotplug case.
 	 */
-	status = RTL_R16(IntrStatus);
+	status = rtl_get_events(tp);
 	while (status && status != 0xffff) {
 		status &= tp->intr_event;
 		if (!status)
@@ -5836,7 +5859,7 @@ static irqreturn_t rtl8169_interrupt(int irq, void *dev_instance)
 		 */
 		RTL_W16(IntrStatus,
 			(status & RxFIFOOver) ? (status | RxOverflow) : status);
-		status = RTL_R16(IntrStatus);
+		status = rtl_get_events(tp);
 	}
 done:
 	return IRQ_RETVAL(handled);