mii_phy_setmedia panic() with BCM5704C

  Hello.

  I just tried to install -current on a Dell Poweredge with a built-in dual gigabit Broadcom network adapter.

  The PCI definition for this hardware has been added a few days ago :   

  { PCI_VENDOR_BROADCOM, PCI_PRODUCT_BROADCOM_BCM5704C },   The two bge devices are properly detected, but trying to "ifconfig" any of them results in an immediate panic triggered here in mii_physubr.c :

#ifdef DIAGNOSTIC

  if (ife->ifm_data < 0 || ife->ifm_data >= MII_NMEDIA)     panic("mii_phy_setmedia");
#endif
                        

  Unfortunately I don't have any physical way to send a full dmesg + trace today, but it looks like recognizing BCM5704C as a working bge device is not a good idea yet.

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