r8169: more 8168dp support.

Adapted from version 8.019.00 of Realtek's r8168 driver

Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Cc: Hayes <hayeswang@realtek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 136 insertions, 9 deletions

diff --git a/drivers/net/r8169.c b/drivers/net/r8169.c
index a468ee98ab9..27a7c20f64c 100644
--- a/drivers/net/r8169.c
+++ b/drivers/net/r8169.c
@@ -121,7 +121,8 @@ enum mac_version {
 	RTL_GIGA_MAC_VER_24 = 0x18, // 8168CP
 	RTL_GIGA_MAC_VER_25 = 0x19, // 8168D
 	RTL_GIGA_MAC_VER_26 = 0x1a, // 8168D
-	RTL_GIGA_MAC_VER_27 = 0x1b  // 8168DP
+	RTL_GIGA_MAC_VER_27 = 0x1b, // 8168DP
+	RTL_GIGA_MAC_VER_28 = 0x1c, // 8168DP
 };
 
 #define _R(NAME,MAC,MASK) \
@@ -158,7 +159,8 @@ static const struct {
 	_R("RTL8168cp/8111cp",	RTL_GIGA_MAC_VER_24, 0xff7e1880), // PCI-E
 	_R("RTL8168d/8111d",	RTL_GIGA_MAC_VER_25, 0xff7e1880), // PCI-E
 	_R("RTL8168d/8111d",	RTL_GIGA_MAC_VER_26, 0xff7e1880), // PCI-E
-	_R("RTL8168dp/8111dp",	RTL_GIGA_MAC_VER_27, 0xff7e1880)  // PCI-E
+	_R("RTL8168dp/8111dp",	RTL_GIGA_MAC_VER_27, 0xff7e1880), // PCI-E
+	_R("RTL8168dp/8111dp",	RTL_GIGA_MAC_VER_28, 0xff7e1880)  // PCI-E
 };
 #undef _R
 
@@ -301,6 +303,7 @@ enum rtl8168_registers {
 #define OCPAR_FLAG			0x80000000
 #define OCPAR_GPHY_WRITE_CMD		0x8000f060
 #define OCPAR_GPHY_READ_CMD		0x0000f060
+	RDSAR1			= 0xd0	/* 8168c only. Undocumented on 8168dp */
 };
 
 enum rtl_register_content {
@@ -748,6 +751,40 @@ static int r8168dp_1_mdio_read(void __iomem *ioaddr, int reg_addr)
 	return RTL_R32(OCPDR) & OCPDR_DATA_MASK;
 }
 
+#define R8168DP_1_MDIO_ACCESS_BIT	0x00020000
+
+static void r8168dp_2_mdio_start(void __iomem *ioaddr)
+{
+	RTL_W32(0xd0, RTL_R32(0xd0) & ~R8168DP_1_MDIO_ACCESS_BIT);
+}
+
+static void r8168dp_2_mdio_stop(void __iomem *ioaddr)
+{
+	RTL_W32(0xd0, RTL_R32(0xd0) | R8168DP_1_MDIO_ACCESS_BIT);
+}
+
+static void r8168dp_2_mdio_write(void __iomem *ioaddr, int reg_addr, int value)
+{
+	r8168dp_2_mdio_start(ioaddr);
+
+	r8169_mdio_write(ioaddr, reg_addr, value);
+
+	r8168dp_2_mdio_stop(ioaddr);
+}
+
+static int r8168dp_2_mdio_read(void __iomem *ioaddr, int reg_addr)
+{
+	int value;
+
+	r8168dp_2_mdio_start(ioaddr);
+
+	value = r8169_mdio_read(ioaddr, reg_addr);
+
+	r8168dp_2_mdio_stop(ioaddr);
+
+	return value;
+}
+
 static void rtl_writephy(struct rtl8169_private *tp, int location, u32 val)
 {
 	tp->mdio_ops.write(tp->mmio_addr, location, val);
@@ -1495,9 +1532,12 @@ static void rtl8169_get_mac_version(struct rtl8169_private *tp,
 		/* 8168D family. */
 		{ 0x7cf00000, 0x28300000,	RTL_GIGA_MAC_VER_26 },
 		{ 0x7cf00000, 0x28100000,	RTL_GIGA_MAC_VER_25 },
-		{ 0x7c800000, 0x28800000,	RTL_GIGA_MAC_VER_27 },
 		{ 0x7c800000, 0x28000000,	RTL_GIGA_MAC_VER_26 },
 
+		/* 8168DP family. */
+		{ 0x7cf00000, 0x28800000,	RTL_GIGA_MAC_VER_27 },
+		{ 0x7cf00000, 0x28a00000,	RTL_GIGA_MAC_VER_28 },
+
 		/* 8168C family. */
 		{ 0x7cf00000, 0x3cb00000,	RTL_GIGA_MAC_VER_24 },
 		{ 0x7cf00000, 0x3c900000,	RTL_GIGA_MAC_VER_23 },
@@ -2246,6 +2286,22 @@ static void rtl8168d_3_hw_phy_config(struct rtl8169_private *tp)
 	rtl_writephy_batch(tp, phy_reg_init, ARRAY_SIZE(phy_reg_init));
 }
 
+static void rtl8168d_4_hw_phy_config(struct rtl8169_private *tp)
+{
+	static const struct phy_reg phy_reg_init[] = {
+		{ 0x1f, 0x0001 },
+		{ 0x17, 0x0cc0 },
+
+		{ 0x1f, 0x0007 },
+		{ 0x1e, 0x002d },
+		{ 0x18, 0x0040 },
+		{ 0x1f, 0x0000 }
+	};
+
+	rtl_writephy_batch(tp, phy_reg_init, ARRAY_SIZE(phy_reg_init));
+	rtl_patchphy(tp, 0x0d, 1 << 5);
+}
+
 static void rtl8102e_hw_phy_config(struct rtl8169_private *tp)
 {
 	static const struct phy_reg phy_reg_init[] = {
@@ -2327,6 +2383,9 @@ static void rtl_hw_phy_config(struct net_device *dev)
 	case RTL_GIGA_MAC_VER_27:
 		rtl8168d_3_hw_phy_config(tp);
 		break;
+	case RTL_GIGA_MAC_VER_28:
+		rtl8168d_4_hw_phy_config(tp);
+		break;
 
 	default:
 		break;
@@ -2636,6 +2695,10 @@ static void __devinit rtl_init_mdio_ops(struct rtl8169_private *tp)
 		ops->write	= r8168dp_1_mdio_write;
 		ops->read	= r8168dp_1_mdio_read;
 		break;
+	case RTL_GIGA_MAC_VER_28:
+		ops->write	= r8168dp_2_mdio_write;
+		ops->read	= r8168dp_2_mdio_read;
+		break;
 	default:
 		ops->write	= r8169_mdio_write;
 		ops->read	= r8169_mdio_read;
@@ -2778,6 +2841,7 @@ static void __devinit rtl_init_pll_power_ops(struct rtl8169_private *tp)
 	case RTL_GIGA_MAC_VER_25:
 	case RTL_GIGA_MAC_VER_26:
 	case RTL_GIGA_MAC_VER_27:
+	case RTL_GIGA_MAC_VER_28:
 		ops->down	= r8168_pll_power_down;
 		ops->up		= r8168_pll_power_up;
 		break;
@@ -3000,8 +3064,10 @@ rtl8169_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
 		   dev->base_addr, dev->dev_addr,
 		   (u32)(RTL_R32(TxConfig) & 0x9cf0f8ff), dev->irq);
 
-	if (tp->mac_version == RTL_GIGA_MAC_VER_27)
+	if ((tp->mac_version == RTL_GIGA_MAC_VER_27) ||
+	    (tp->mac_version == RTL_GIGA_MAC_VER_28)) {
 		rtl8168_driver_start(tp);
+	}
 
 	rtl8169_init_phy(dev, tp);
 
@@ -3038,8 +3104,10 @@ static void __devexit rtl8169_remove_one(struct pci_dev *pdev)
 	struct net_device *dev = pci_get_drvdata(pdev);
 	struct rtl8169_private *tp = netdev_priv(dev);
 
-	if (tp->mac_version == RTL_GIGA_MAC_VER_27)
+	if ((tp->mac_version == RTL_GIGA_MAC_VER_27) ||
+	    (tp->mac_version == RTL_GIGA_MAC_VER_28)) {
 		rtl8168_driver_stop(tp);
+	}
 
 	cancel_delayed_work_sync(&tp->task);
 
@@ -3122,11 +3190,19 @@ err_pm_runtime_put:
 	goto out;
 }
 
-static void rtl8169_hw_reset(void __iomem *ioaddr)
+static void rtl8169_hw_reset(struct rtl8169_private *tp)
 {
+	void __iomem *ioaddr = tp->mmio_addr;
+
 	/* Disable interrupts */
 	rtl8169_irq_mask_and_ack(ioaddr);
 
+	if (tp->mac_version == RTL_GIGA_MAC_VER_28) {
+		while (RTL_R8(TxPoll) & NPQ)
+			udelay(20);
+
+	}
+
 	/* Reset the chipset */
 	RTL_W8(ChipCmd, CmdReset);
 
@@ -3318,6 +3394,11 @@ static void rtl_csi_access_enable(void __iomem *ioaddr, u32 bits)
 	rtl_csi_write(ioaddr, 0x070c, csi | bits);
 }
 
+static void rtl_csi_access_enable_1(void __iomem *ioaddr)
+{
+	rtl_csi_access_enable(ioaddr, 0x17000000);
+}
+
 static void rtl_csi_access_enable_2(void __iomem *ioaddr)
 {
 	rtl_csi_access_enable(ioaddr, 0x27000000);
@@ -3355,6 +3436,21 @@ static void rtl_disable_clock_request(struct pci_dev *pdev)
 	}
 }
 
+static void rtl_enable_clock_request(struct pci_dev *pdev)
+{
+	struct net_device *dev = pci_get_drvdata(pdev);
+	struct rtl8169_private *tp = netdev_priv(dev);
+	int cap = tp->pcie_cap;
+
+	if (cap) {
+		u16 ctl;
+
+		pci_read_config_word(pdev, cap + PCI_EXP_LNKCTL, &ctl);
+		ctl |= PCI_EXP_LNKCTL_CLKREQ_EN;
+		pci_write_config_word(pdev, cap + PCI_EXP_LNKCTL, ctl);
+	}
+}
+
 #define R8168_CPCMD_QUIRK_MASK (\
 	EnableBist | \
 	Mac_dbgo_oe | \
@@ -3498,6 +3594,32 @@ static void rtl_hw_start_8168d(void __iomem *ioaddr, struct pci_dev *pdev)
 	RTL_W16(CPlusCmd, RTL_R16(CPlusCmd) & ~R8168_CPCMD_QUIRK_MASK);
 }
 
+static void rtl_hw_start_8168d_4(void __iomem *ioaddr, struct pci_dev *pdev)
+{
+	static const struct ephy_info e_info_8168d_4[] = {
+		{ 0x0b, ~0,	0x48 },
+		{ 0x19, 0x20,	0x50 },
+		{ 0x0c, ~0,	0x20 }
+	};
+	int i;
+
+	rtl_csi_access_enable_1(ioaddr);
+
+	rtl_tx_performance_tweak(pdev, 0x5 << MAX_READ_REQUEST_SHIFT);
+
+	RTL_W8(MaxTxPacketSize, TxPacketMax);
+
+	for (i = 0; i < ARRAY_SIZE(e_info_8168d_4); i++) {
+		const struct ephy_info *e = e_info_8168d_4 + i;
+		u16 w;
+
+		w = rtl_ephy_read(ioaddr, e->offset);
+		rtl_ephy_write(ioaddr, 0x03, (w & e->mask) | e->bits);
+	}
+
+	rtl_enable_clock_request(pdev);
+}
+
 static void rtl_hw_start_8168(struct net_device *dev)
 {
 	struct rtl8169_private *tp = netdev_priv(dev);
@@ -3575,6 +3697,10 @@ static void rtl_hw_start_8168(struct net_device *dev)
 		rtl_hw_start_8168d(ioaddr, pdev);
 	break;
 
+	case RTL_GIGA_MAC_VER_28:
+		rtl_hw_start_8168d_4(ioaddr, pdev);
+	break;
+
 	default:
 		printk(KERN_ERR PFX "%s: unknown chipset (mac_version = %d).\n",
 			dev->name, tp->mac_version);
@@ -3987,7 +4113,7 @@ static void rtl8169_tx_timeout(struct net_device *dev)
 {
 	struct rtl8169_private *tp = netdev_priv(dev);
 
-	rtl8169_hw_reset(tp->mmio_addr);
+	rtl8169_hw_reset(tp);
 
 	/* Let's wait a bit while any (async) irq lands on */
 	rtl8169_schedule_work(dev, rtl8169_reset_task);
@@ -4145,7 +4271,6 @@ static void rtl8169_pcierr_interrupt(struct net_device *dev)
 {
 	struct rtl8169_private *tp = netdev_priv(dev);
 	struct pci_dev *pdev = tp->pci_dev;
-	void __iomem *ioaddr = tp->mmio_addr;
 	u16 pci_status, pci_cmd;
 
 	pci_read_config_word(pdev, PCI_COMMAND, &pci_cmd);
@@ -4176,13 +4301,15 @@ static void rtl8169_pcierr_interrupt(struct net_device *dev)
 
 	/* The infamous DAC f*ckup only happens at boot time */
 	if ((tp->cp_cmd & PCIDAC) && !tp->dirty_rx && !tp->cur_rx) {
+		void __iomem *ioaddr = tp->mmio_addr;
+
 		netif_info(tp, intr, dev, "disabling PCI DAC\n");
 		tp->cp_cmd &= ~PCIDAC;
 		RTL_W16(CPlusCmd, tp->cp_cmd);
 		dev->features &= ~NETIF_F_HIGHDMA;
 	}
 
-	rtl8169_hw_reset(ioaddr);
+	rtl8169_hw_reset(tp);
 
 	rtl8169_schedule_work(dev, rtl8169_reinit_task);
 }