r8169: enable wake on lan

Similar to 8139cp code but more inspired/lucky.

Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>

1 files changed, 87 insertions, 0 deletions

diff --git a/drivers/net/r8169.c b/drivers/net/r8169.c
index 999fd6cef77e..8cc0d0bbdf50 100644
--- a/drivers/net/r8169.c
+++ b/drivers/net/r8169.c
@@ -290,7 +290,15 @@ enum RTL8169_register_content {
         /* Config1 register p.24 */
         PMEnable        = (1 << 0),     /* Power Management Enable */
 
+        /* Config3 register p.25 */
+        MagicPacket     = (1 << 5),     /* Wake up when receives a Magic Packet */
+        LinkUp          = (1 << 4),     /* Wake up when the cable connection is re-established */
+
         /* Config5 register p.27 */
+        BWF             = (1 << 6),     /* Accept Broadcast wakeup frame */
+        MWF             = (1 << 5),     /* Accept Multicast wakeup frame */
+        UWF             = (1 << 4),     /* Accept Unicast wakeup frame */
+        LanWake         = (1 << 1),     /* LanWake enable/disable */
         PMEStatus       = (1 << 0),     /* PME status can be reset by PCI RST# */
 
         /* TBICSR p.28 */
@@ -439,6 +447,7 @@ struct rtl8169_private {
         unsigned int (*phy_reset_pending)(void __iomem *);
         unsigned int (*link_ok)(void __iomem *);
         struct work_struct task;
+        unsigned wol_enabled : 1;
 };
 
 MODULE_AUTHOR("Realtek and the Linux r8169 crew <netdev@vger.kernel.org>");
@@ -613,6 +622,80 @@ static void rtl8169_link_option(int idx, u8 *autoneg, u16 *speed, u8 *duplex)
         *duplex = p->duplex;
 }
 
+static void rtl8169_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
+{
+        struct rtl8169_private *tp = netdev_priv(dev);
+        void __iomem *ioaddr = tp->mmio_addr;
+        u8 options;
+
+        wol->wolopts = 0;
+
+#define WAKE_ANY (WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_BCAST | WAKE_MCAST)
+        wol->supported = WAKE_ANY;
+
+        spin_lock_irq(&tp->lock);
+
+        options = RTL_R8(Config1);
+        if (!(options & PMEnable))
+                goto out_unlock;
+
+        options = RTL_R8(Config3);
+        if (options & LinkUp)
+                wol->wolopts |= WAKE_PHY;
+        if (options & MagicPacket)
+                wol->wolopts |= WAKE_MAGIC;
+
+        options = RTL_R8(Config5);
+        if (options & UWF)
+                wol->wolopts |= WAKE_UCAST;
+        if (options & BWF)
+                wol->wolopts |= WAKE_BCAST;
+        if (options & MWF)
+                wol->wolopts |= WAKE_MCAST;
+
+out_unlock:
+        spin_unlock_irq(&tp->lock);
+}
+
+static int rtl8169_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
+{
+        struct rtl8169_private *tp = netdev_priv(dev);
+        void __iomem *ioaddr = tp->mmio_addr;
+        int i;
+        static struct {
+                u32 opt;
+                u16 reg;
+                u8  mask;
+        } cfg[] = {
+                { WAKE_ANY,   Config1, PMEnable },
+                { WAKE_PHY,   Config3, LinkUp },
+                { WAKE_MAGIC, Config3, MagicPacket },
+                { WAKE_UCAST, Config5, UWF },
+                { WAKE_BCAST, Config5, BWF },
+                { WAKE_MCAST, Config5, MWF },
+                { WAKE_ANY,   Config5, LanWake }
+        };
+
+        spin_lock_irq(&tp->lock);
+
+        RTL_W8(Cfg9346, Cfg9346_Unlock);
+
+        for (i = 0; i < ARRAY_SIZE(cfg); i++) {
+                u8 options = RTL_R8(cfg[i].reg) & ~cfg[i].mask;
+                if (wol->wolopts & cfg[i].opt)
+                        options |= cfg[i].mask;
+                RTL_W8(cfg[i].reg, options);
+        }
+
+        RTL_W8(Cfg9346, Cfg9346_Lock);
+
+        tp->wol_enabled = (wol->wolopts) ? 1 : 0;
+
+        spin_unlock_irq(&tp->lock);
+
+        return 0;
+}
+
 static void rtl8169_get_drvinfo(struct net_device *dev,
                                 struct ethtool_drvinfo *info)
 {
@@ -1031,6 +1114,8 @@ static struct ethtool_ops rtl8169_ethtool_ops = {
         .get_tso                = ethtool_op_get_tso,
         .set_tso                = ethtool_op_set_tso,
         .get_regs               = rtl8169_get_regs,
+        .get_wol                = rtl8169_get_wol,
+        .set_wol                = rtl8169_set_wol,
         .get_strings            = rtl8169_get_strings,
         .get_stats_count        = rtl8169_get_stats_count,
         .get_ethtool_stats      = rtl8169_get_ethtool_stats,
@@ -2692,6 +2777,7 @@ static int rtl8169_suspend(struct pci_dev *pdev, pm_message_t state)
         spin_unlock_irq(&tp->lock);
 
         pci_save_state(pdev);
+        pci_enable_wake(pdev, pci_choose_state(pdev, state), tp->wol_enabled);
         pci_set_power_state(pdev, pci_choose_state(pdev, state));
 out:
         return 0;
@@ -2708,6 +2794,7 @@ static int rtl8169_resume(struct pci_dev *pdev)
 
         pci_set_power_state(pdev, PCI_D0);
         pci_restore_state(pdev);
+        pci_enable_wake(pdev, PCI_D0, 0);
 
         rtl8169_schedule_work(dev, rtl8169_reset_task);
 out: