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authorHayes Wang <hayeswang@realtek.com>2011-07-06 15:58:03 +0800
committerFrancois Romieu <romieu@fr.zoreil.com>2011-07-14 23:22:22 +0200
commit92fc43b4159b518f5baae57301f26d770b0834c9 (patch)
treefa2a785a90e3d5d0aada24cf0672d2c516db38b6 /drivers/net/r8169.c
parent4f6b00e5f139d7be3ca8371b769778f94fa549dd (diff)
downloadop-kernel-dev-92fc43b4159b518f5baae57301f26d770b0834c9.zip
op-kernel-dev-92fc43b4159b518f5baae57301f26d770b0834c9.tar.gz
r8169: modify the flow of the hw reset.
- Disable tx and rx by resetting hw, so replace rtl8169_asic_down with rtl8169_hw_reset. - RxConfig bits 0 ~ 5 have to be cleared before hw reset to avoid receiving spurious data. - Certain chips need to do some checking before reset. - Remove hw reset which is done before hw_start. It is done in close, down or device probe functions. - Move rtl8169_init_ring_indexes function into rtl_hw_reset function. The indexes of tx and rx only need to be zero when the hw resets. Signed-off-by: Hayes Wang <hayeswang@realtek.com> Acked-by: Francois Romieu <romieu@fr.zoreil.com>
Diffstat (limited to 'drivers/net/r8169.c')
-rw-r--r--drivers/net/r8169.c53
1 files changed, 28 insertions, 25 deletions
diff --git a/drivers/net/r8169.c b/drivers/net/r8169.c
index 52ad6ce..604f946 100644
--- a/drivers/net/r8169.c
+++ b/drivers/net/r8169.c
@@ -1071,13 +1071,6 @@ static void rtl8169_irq_mask_and_ack(void __iomem *ioaddr)
RTL_W16(IntrStatus, 0xffff);
}
-static void rtl8169_asic_down(void __iomem *ioaddr)
-{
- RTL_W8(ChipCmd, 0x00);
- rtl8169_irq_mask_and_ack(ioaddr);
- RTL_R16(CPlusCmd);
-}
-
static unsigned int rtl8169_tbi_reset_pending(struct rtl8169_private *tp)
{
void __iomem *ioaddr = tp->mmio_addr;
@@ -3337,6 +3330,11 @@ static void __devinit rtl_init_pll_power_ops(struct rtl8169_private *tp)
}
}
+static void rtl8169_init_ring_indexes(struct rtl8169_private *tp)
+{
+ tp->dirty_tx = tp->dirty_rx = tp->cur_tx = tp->cur_rx = 0;
+}
+
static void rtl_hw_reset(struct rtl8169_private *tp)
{
void __iomem *ioaddr = tp->mmio_addr;
@@ -3349,8 +3347,10 @@ static void rtl_hw_reset(struct rtl8169_private *tp)
for (i = 0; i < 100; i++) {
if ((RTL_R8(ChipCmd) & CmdReset) == 0)
break;
- msleep_interruptible(1);
+ udelay(100);
}
+
+ rtl8169_init_ring_indexes(tp);
}
static int __devinit
@@ -3732,6 +3732,16 @@ err_pm_runtime_put:
goto out;
}
+static void rtl_rx_close(struct rtl8169_private *tp)
+{
+ void __iomem *ioaddr = tp->mmio_addr;
+ u32 rxcfg = RTL_R32(RxConfig);
+
+ rxcfg &= ~(AcceptErr | AcceptRunt | AcceptBroadcast | AcceptMulticast |
+ AcceptMyPhys | AcceptAllPhys);
+ RTL_W32(RxConfig, rxcfg);
+}
+
static void rtl8169_hw_reset(struct rtl8169_private *tp)
{
void __iomem *ioaddr = tp->mmio_addr;
@@ -3739,19 +3749,19 @@ static void rtl8169_hw_reset(struct rtl8169_private *tp)
/* Disable interrupts */
rtl8169_irq_mask_and_ack(ioaddr);
+ rtl_rx_close(tp);
+
if (tp->mac_version == RTL_GIGA_MAC_VER_27 ||
tp->mac_version == RTL_GIGA_MAC_VER_28 ||
tp->mac_version == RTL_GIGA_MAC_VER_31) {
while (RTL_R8(TxPoll) & NPQ)
udelay(20);
-
+ } else {
+ RTL_W8(ChipCmd, RTL_R8(ChipCmd) | StopReq);
+ udelay(100);
}
- /* Reset the chipset */
- RTL_W8(ChipCmd, CmdReset);
-
- /* PCI commit */
- RTL_R8(ChipCmd);
+ rtl_hw_reset(tp);
}
static void rtl_set_rx_tx_config_registers(struct rtl8169_private *tp)
@@ -3771,8 +3781,6 @@ static void rtl_hw_start(struct net_device *dev)
{
struct rtl8169_private *tp = netdev_priv(dev);
- rtl_hw_reset(tp);
-
tp->hw_start(dev);
netif_start_queue(dev);
@@ -4581,11 +4589,6 @@ err_out:
return -ENOMEM;
}
-static void rtl8169_init_ring_indexes(struct rtl8169_private *tp)
-{
- tp->dirty_tx = tp->dirty_rx = tp->cur_tx = tp->cur_rx = 0;
-}
-
static int rtl8169_init_ring(struct net_device *dev)
{
struct rtl8169_private *tp = netdev_priv(dev);
@@ -4713,7 +4716,7 @@ static void rtl8169_reset_task(struct work_struct *work)
rtl8169_tx_clear(tp);
- rtl8169_init_ring_indexes(tp);
+ rtl8169_hw_reset(tp);
rtl_hw_start(dev);
netif_wake_queue(dev);
rtl8169_check_link_status(dev, tp, tp->mmio_addr);
@@ -5127,7 +5130,7 @@ static irqreturn_t rtl8169_interrupt(int irq, void *dev_instance)
* the chip, so just exit the loop.
*/
if (unlikely(!netif_running(dev))) {
- rtl8169_asic_down(ioaddr);
+ rtl8169_hw_reset(tp);
break;
}
@@ -5250,7 +5253,7 @@ static void rtl8169_down(struct net_device *dev)
spin_lock_irq(&tp->lock);
- rtl8169_asic_down(ioaddr);
+ rtl8169_hw_reset(tp);
/*
* At this point device interrupts can not be enabled in any function,
* as netif_running is not true (rtl8169_interrupt, rtl8169_reset_task,
@@ -5504,7 +5507,7 @@ static void rtl_shutdown(struct pci_dev *pdev)
spin_lock_irq(&tp->lock);
- rtl8169_asic_down(ioaddr);
+ rtl8169_hw_reset(tp);
spin_unlock_irq(&tp->lock);
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