[PATCH] sk98lin: MII ioctl support

Add MII ioctl support to the deprecated sk98lin driver.
This allows comparison with skge driver's PHY settings.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 54 insertions, 0 deletions

diff --git a/drivers/net/sk98lin/skge.c b/drivers/net/sk98lin/skge.c
index d4913c3de2a1..a5d41ebc9fb4 100644
--- a/drivers/net/sk98lin/skge.c
+++ b/drivers/net/sk98lin/skge.c
@@ -113,6 +113,7 @@
 #include        <linux/init.h>
 #include        <linux/dma-mapping.h>
 #include        <linux/ip.h>
+#include        <linux/mii.h>
 
 #include        "h/skdrv1st.h"
 #include        "h/skdrv2nd.h"
@@ -2843,6 +2844,56 @@ unsigned long	Flags;			/* for spin lock */
         return(&pAC->stats);
 } /* SkGeStats */
 
+/*
+ * Basic MII register access
+ */
+static int SkGeMiiIoctl(struct net_device *dev,
+                        struct mii_ioctl_data *data, int cmd)
+{
+        DEV_NET *pNet = netdev_priv(dev);
+        SK_AC *pAC = pNet->pAC;
+        SK_IOC IoC = pAC->IoBase;
+        int Port = pNet->PortNr;
+        SK_GEPORT *pPrt = &pAC->GIni.GP[Port];
+        unsigned long Flags;
+        int err = 0;
+        int reg = data->reg_num & 0x1f;
+        SK_U16 val = data->val_in;
+
+        if (!netif_running(dev))
+                return -ENODEV; /* Phy still in reset */
+
+        spin_lock_irqsave(&pAC->SlowPathLock, Flags);
+        switch(cmd) {
+        case SIOCGMIIPHY:
+                data->phy_id = pPrt->PhyAddr;
+
+                /* fallthru */
+        case SIOCGMIIREG:
+                if (pAC->GIni.GIGenesis)
+                        SkXmPhyRead(pAC, IoC, Port, reg, &val);
+                else
+                        SkGmPhyRead(pAC, IoC, Port, reg, &val);
+
+                data->val_out = val;
+                break;
+
+        case SIOCSMIIREG:
+                if (!capable(CAP_NET_ADMIN))
+                        err = -EPERM;
+
+                else if (pAC->GIni.GIGenesis)
+                        SkXmPhyWrite(pAC, IoC, Port, reg, val);
+                else
+                        SkGmPhyWrite(pAC, IoC, Port, reg, val);
+                break;
+        default:
+                err = -EOPNOTSUPP;
+        }
+        spin_unlock_irqrestore(&pAC->SlowPathLock, Flags);
+        return err;
+}
+
 
 /*****************************************************************************
  *
@@ -2876,6 +2927,9 @@ int		HeaderLength = sizeof(SK_U32) + sizeof(SK_U32);
         pNet = netdev_priv(dev);
         pAC = pNet->pAC;
         
+        if (cmd == SIOCGMIIPHY || cmd == SIOCSMIIREG || cmd == SIOCGMIIREG)
+            return SkGeMiiIoctl(dev, if_mii(rq), cmd);
+
         if(copy_from_user(&Ioctl, rq->ifr_data, sizeof(SK_GE_IOCTL))) {
                 return -EFAULT;
         }