r8169: more magic during initialization of the hardware

Mostly taken from Realtek's driver.

It's a bit yucky but the original is even worse.

Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: Darren Salt <linux@youmustbejoking.demon.co.uk>

diff --git a/drivers/net/r8169.c b/drivers/net/r8169.c
index 45d3ca4..c8fa9b1 100644 (file)
--- a/drivers/net/r8169.c
+++ b/drivers/net/r8169.c
@@ -1815,12 +1815,25 @@ static void rtl8169_hw_reset(void __iomem *ioaddr)
        RTL_R8(ChipCmd);
 }
 
-static void
-rtl8169_hw_start(struct net_device *dev)
+static void rtl8169_set_rx_tx_config_registers(struct rtl8169_private *tp)
+{
+       void __iomem *ioaddr = tp->mmio_addr;
+       u32 cfg = rtl8169_rx_config;
+
+       cfg |= (RTL_R32(RxConfig) & rtl_chip_info[tp->chipset].RxConfigMask);
+       RTL_W32(RxConfig, cfg);
+
+       /* Set DMA burst size and Interframe Gap Time */
+       RTL_W32(TxConfig, (TX_DMA_BURST << TxDMAShift) |
+               (InterFrameGap << TxInterFrameGapShift));
+}
+
+static void rtl8169_hw_start(struct net_device *dev)
 {
        struct rtl8169_private *tp = netdev_priv(dev);
        void __iomem *ioaddr = tp->mmio_addr;
        struct pci_dev *pdev = tp->pci_dev;
+       u16 cmd;
        u32 i;
 
        /* Soft reset the chip. */
@@ -1833,6 +1846,11 @@ rtl8169_hw_start(struct net_device *dev)
                msleep_interruptible(1);
        }
 
+       if (tp->mac_version == RTL_GIGA_MAC_VER_05) {
+               RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) | PCIMulRW);
+               pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE, 0x08);
+       }
+
        if (tp->mac_version == RTL_GIGA_MAC_VER_13) {
                pci_write_config_word(pdev, 0x68, 0x00);
                pci_write_config_word(pdev, 0x69, 0x08);
@@ -1840,8 +1858,6 @@ rtl8169_hw_start(struct net_device *dev)
 
        /* Undocumented stuff. */
        if (tp->mac_version == RTL_GIGA_MAC_VER_05) {
-               u16 cmd;
-
                /* Realtek's r1000_n.c driver uses '&& 0x01' here. Well... */
                if ((RTL_R8(Config2) & 0x07) & 0x01)
                        RTL_W32(0x7c, 0x0007ffff);
@@ -1853,23 +1869,29 @@ rtl8169_hw_start(struct net_device *dev)
                pci_write_config_word(pdev, PCI_COMMAND, cmd);
        }
 
-
        RTL_W8(Cfg9346, Cfg9346_Unlock);
+       if ((tp->mac_version == RTL_GIGA_MAC_VER_01) ||
+           (tp->mac_version == RTL_GIGA_MAC_VER_02) ||
+           (tp->mac_version == RTL_GIGA_MAC_VER_03) ||
+           (tp->mac_version == RTL_GIGA_MAC_VER_04))
+               RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
+
        RTL_W8(EarlyTxThres, EarlyTxThld);
 
        /* Low hurts. Let's disable the filtering. */
        RTL_W16(RxMaxSize, 16383);
 
-       /* Set Rx Config register */
-       i = rtl8169_rx_config |
-               (RTL_R32(RxConfig) & rtl_chip_info[tp->chipset].RxConfigMask);
-       RTL_W32(RxConfig, i);
+       if ((tp->mac_version == RTL_GIGA_MAC_VER_01) ||
+           (tp->mac_version == RTL_GIGA_MAC_VER_02) ||
+           (tp->mac_version == RTL_GIGA_MAC_VER_03) ||
+           (tp->mac_version == RTL_GIGA_MAC_VER_04))
+               RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
+               rtl8169_set_rx_tx_config_registers(tp);
 
-       /* Set DMA burst size and Interframe Gap Time */
-       RTL_W32(TxConfig, (TX_DMA_BURST << TxDMAShift) |
-               (InterFrameGap << TxInterFrameGapShift));
+       cmd = RTL_R16(CPlusCmd);
+       RTL_W16(CPlusCmd, cmd);
 
-       tp->cp_cmd |= RTL_R16(CPlusCmd) | PCIMulRW;
+       tp->cp_cmd |= cmd | PCIMulRW;
 
        if ((tp->mac_version == RTL_GIGA_MAC_VER_02) ||
            (tp->mac_version == RTL_GIGA_MAC_VER_03)) {
@@ -1895,7 +1917,15 @@ rtl8169_hw_start(struct net_device *dev)
        RTL_W32(TxDescStartAddrLow, ((u64) tp->TxPhyAddr & DMA_32BIT_MASK));
        RTL_W32(RxDescAddrHigh, ((u64) tp->RxPhyAddr >> 32));
        RTL_W32(RxDescAddrLow, ((u64) tp->RxPhyAddr & DMA_32BIT_MASK));
-       RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
+
+       if ((tp->mac_version != RTL_GIGA_MAC_VER_01) &&
+           (tp->mac_version != RTL_GIGA_MAC_VER_02) &&
+           (tp->mac_version != RTL_GIGA_MAC_VER_03) &&
+           (tp->mac_version != RTL_GIGA_MAC_VER_04)) {
+               RTL_W8(ChipCmd, CmdTxEnb | CmdRxEnb);
+               rtl8169_set_rx_tx_config_registers(tp);
+       }
+
        RTL_W8(Cfg9346, Cfg9346_Lock);
 
        /* Initially a 10 us delay. Turned it into a PCI commit. - FR */