Merge branch 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied...

[mv-sheeva.git] / drivers / net / ipg.c

diff --git a/drivers/net/ipg.c b/drivers/net/ipg.c
index 51d5f30e0afe1d314959c64df67ba575c0d6e8c6..7373dafbb3f7d3f9d06ed71a785b840a5e236c87 100644 (file)
--- a/drivers/net/ipg.c
+++ b/drivers/net/ipg.c
@@ -42,7 +42,6 @@
 #define ipg_r16(reg)           ioread16(ioaddr + (reg))
 #define ipg_r8(reg)            ioread8(ioaddr + (reg))
 
-#define JUMBO_FRAME_4k_ONLY
 enum {
        netdev_io_size = 128
 };
@@ -54,6 +53,14 @@ MODULE_AUTHOR("IC Plus Corp. 2003");
 MODULE_DESCRIPTION("IC Plus IP1000 Gigabit Ethernet Adapter Linux Driver");
 MODULE_LICENSE("GPL");
 
+/*
+ * Defaults
+ */
+#define IPG_MAX_RXFRAME_SIZE   0x0600
+#define IPG_RXFRAG_SIZE                0x0600
+#define IPG_RXSUPPORT_SIZE     0x0600
+#define IPG_IS_JUMBO           false
+
 /*
  * Variable record -- index by leading revision/length
  * Revision/Length(=N*4), Address1, Data1, Address2, Data2,...,AddressN,DataN
@@ -631,6 +638,7 @@ static void ipg_nic_set_multicast_list(struct net_device *dev)
 
 static int ipg_io_config(struct net_device *dev)
 {
+       struct ipg_nic_private *sp = netdev_priv(dev);
        void __iomem *ioaddr = ipg_ioaddr(dev);
        u32 origmacctrl;
        u32 restoremacctrl;
@@ -670,7 +678,7 @@ static int ipg_io_config(struct net_device *dev)
        /* Set RECEIVEMODE register. */
        ipg_nic_set_multicast_list(dev);
 
-       ipg_w16(IPG_MAX_RXFRAME_SIZE, MAX_FRAME_SIZE);
+       ipg_w16(sp->max_rxframe_size, MAX_FRAME_SIZE);
 
        ipg_w8(IPG_RXDMAPOLLPERIOD_VALUE,   RX_DMA_POLL_PERIOD);
        ipg_w8(IPG_RXDMAURGENTTHRESH_VALUE, RX_DMA_URGENT_THRESH);
@@ -1804,9 +1812,6 @@ static int ipg_nic_open(struct net_device *dev)
        sp->jumbo.current_size = 0;
        sp->jumbo.skb = NULL;
 
-       if (IPG_TXFRAG_SIZE)
-               dev->mtu = IPG_TXFRAG_SIZE;
-
        /* Enable transmit and receive operation of the IPG. */
        ipg_w32((ipg_r32(MAC_CTRL) | IPG_MC_RX_ENABLE | IPG_MC_TX_ENABLE) &
                 IPG_MC_RSVD_MASK, MAC_CTRL);
@@ -2114,6 +2119,9 @@ static int ipg_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 
 static int ipg_nic_change_mtu(struct net_device *dev, int new_mtu)
 {
+       struct ipg_nic_private *sp = netdev_priv(dev);
+       int err;
+
        /* Function to accomodate changes to Maximum Transfer Unit
         * (or MTU) of IPG NIC. Cannot use default function since
         * the default will not allow for MTU > 1500 bytes.
@@ -2121,16 +2129,33 @@ static int ipg_nic_change_mtu(struct net_device *dev, int new_mtu)
 
        IPG_DEBUG_MSG("_nic_change_mtu\n");
 
-       /* Check that the new MTU value is between 68 (14 byte header, 46
-        * byte payload, 4 byte FCS) and IPG_MAX_RXFRAME_SIZE, which
-        * corresponds to the MAXFRAMESIZE register in the IPG.
+       /*
+        * Check that the new MTU value is between 68 (14 byte header, 46 byte
+        * payload, 4 byte FCS) and 10 KB, which is the largest supported MTU.
         */
-       if ((new_mtu < 68) || (new_mtu > IPG_MAX_RXFRAME_SIZE))
+       if (new_mtu < 68 || new_mtu > 10240)
                return -EINVAL;
 
+       err = ipg_nic_stop(dev);
+       if (err)
+               return err;
+
        dev->mtu = new_mtu;
 
-       return 0;
+       sp->max_rxframe_size = new_mtu;
+
+       sp->rxfrag_size = new_mtu;
+       if (sp->rxfrag_size > 4088)
+               sp->rxfrag_size = 4088;
+
+       sp->rxsupport_size = sp->max_rxframe_size;
+
+       if (new_mtu > 0x0600)
+               sp->is_jumbo = true;
+       else
+               sp->is_jumbo = false;
+
+       return ipg_nic_open(dev);
 }
 
 static int ipg_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
@@ -2235,9 +2260,10 @@ static int __devinit ipg_probe(struct pci_dev *pdev,
        spin_lock_init(&sp->lock);
        mutex_init(&sp->mii_mutex);
 
-       sp->is_jumbo = IPG_JUMBO;
+       sp->is_jumbo = IPG_IS_JUMBO;
        sp->rxfrag_size = IPG_RXFRAG_SIZE;
        sp->rxsupport_size = IPG_RXSUPPORT_SIZE;
+       sp->max_rxframe_size = IPG_MAX_RXFRAME_SIZE;
 
        /* Declare IPG NIC functions for Ethernet device methods.
         */