[PATCH] [NETDEV] [005] dmfe : Add support for wake-on-lan

[Levitsky Maxim]

From: Maxim Levitsky <maximlevitsky@xxxxxxxxx>
Subject: [PATCH] [NETDEV] [005] dmfe : Add support for wake-on-lan

Adds support for wake on lan feature

Signed-off-by: Maxim Levitsky <maximlevitsky@xxxxxxxxx>

---

This board supports WOL on magic packet / link change / specific packet
This adds support for WOL on magic packet / link change

Note : WOL is enabled when you suspend system ether to disk or ram, and is not enabled when you
turn system off


--- linux-2.6.20-mod/drivers/net/tulip/dmfe.c   2007-02-07 18:53:19.000000000 +0200
+++ linux-2.6.20-test/drivers/net/tulip/dmfe.c  2007-02-07 18:55:44.000000000 +0200
@@ -122,6 +122,11 @@
 #define DM9801_NOISE_FLOOR 8
 #define DM9802_NOISE_FLOOR 5
 
+#define DMFE_WOL_LINKCHANGE    0x20000000
+#define DMFE_WOL_SAMPLEPACKET  0x10000000
+#define DMFE_WOL_MAGICPACKET   0x08000000
+
+
 #define DMFE_10MHF      0
 #define DMFE_100MHF     1
 #define DMFE_10MFD      4
@@ -242,6 +247,7 @@ struct dmfe_board_info {
        u8 wait_reset;                  /* Hardware failed, need to reset */
        u8 dm910x_chk_mode;             /* Operating mode check */
        u8 first_in_callback;           /* Flag to record state */
+       u8 wol_mode;                    /* user WOL settings */
        struct timer_list timer;
 
        /* System defined statistic counter */
@@ -423,6 +429,7 @@ static int __devinit dmfe_init_one (stru
        db->chip_id = ent->driver_data;
        db->ioaddr = pci_resource_start(pdev, 0);
        db->chip_revision = dev_rev;
+       db->wol_mode = 0;
 
        db->pdev = pdev;
 
@@ -1054,7 +1061,11 @@ static void dmfe_set_filter_mode(struct 
        spin_unlock_irqrestore(&db->lock, flags);
 }
 
-static void netdev_get_drvinfo(struct net_device *dev,
+/*
+ *     Ethtool interace 
+ */
+
+static void dmfe_ethtool_get_drvinfo(struct net_device *dev,
                               struct ethtool_drvinfo *info)
 {
        struct dmfe_board_info *np = netdev_priv(dev);
@@ -1068,9 +1079,35 @@ static void netdev_get_drvinfo(struct ne
                        dev->base_addr, dev->irq);
 }
 
+static int dmfe_ethtool_set_wol(struct net_device *dev, 
+                               struct ethtool_wolinfo *wolinfo)
+{
+       struct dmfe_board_info *db = netdev_priv(dev);
+       
+       if (wolinfo->wolopts & (WAKE_UCAST | WAKE_MCAST | WAKE_BCAST | 
+                               WAKE_ARP | WAKE_MAGICSECURE))
+                  return -EOPNOTSUPP;
+       
+       db->wol_mode = wolinfo->wolopts;
+       return 0;
+}
+
+static void dmfe_ethtool_get_wol(struct net_device *dev, 
+                                struct ethtool_wolinfo *wolinfo)
+{
+       struct dmfe_board_info *db = netdev_priv(dev);
+       
+       wolinfo->supported = WAKE_PHY | WAKE_MAGIC;
+       wolinfo->wolopts = db->wol_mode;
+       return;
+}
+
+
 static const struct ethtool_ops netdev_ethtool_ops = {
-       .get_drvinfo            = netdev_get_drvinfo,
+       .get_drvinfo            = dmfe_ethtool_get_drvinfo,
        .get_link               = ethtool_op_get_link,
+       .set_wol                = dmfe_ethtool_set_wol,
+       .get_wol                = dmfe_ethtool_get_wol,
 };
 
 /*
@@ -2046,6 +2083,20 @@ static int dmfe_suspend(struct pci_dev *
     /* Fre RX buffers */
     dmfe_free_rxbuffer(db);
 
+    /* Enable WOL */
+    pci_read_config_dword(pci_dev, 0x40, &tmp);
+    tmp &= ~(WAKE_PHY|WAKE_MAGIC);
+    
+    if (db->wol_mode & WAKE_PHY)
+           tmp |= DMFE_WOL_LINKCHANGE;
+    if (db->wol_mode & WAKE_MAGIC)
+           tmp |= DMFE_WOL_MAGICPACKET;
+    
+    pci_write_config_dword(pci_dev, 0x40, tmp);
+    
+    pci_enable_wake(pci_dev, PCI_D3hot, 1);
+    pci_enable_wake(pci_dev, PCI_D3cold, 1);
+    
     /* Power down device*/
     pci_set_power_state(pci_dev ,  pci_choose_state(pci_dev,state));
     pci_save_state(pci_dev);
@@ -2064,6 +2115,15 @@ static int dmfe_resume(struct pci_dev *p
     /* Re-initilize DM910X board */
     dmfe_init_dm910x(dev);
         
+    /* Disable WOL */
+    pci_read_config_dword(pci_dev, 0x40, &tmp);
+    
+    tmp &= (DMFE_WOL_LINKCHANGE | DMFE_WOL_MAGICPACKET);
+    pci_write_config_dword(pci_dev, 0x40, tmp);
+    
+    pci_enable_wake(pci_dev, PCI_D3hot, 0);
+    pci_enable_wake(pci_dev, PCI_D3cold, 0);
+    
     /* Restart upper layer interface */
     netif_device_attach(dev);


 
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