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Problems with 3c575 and CEM33 on an NEC Versa LX 

Forum: PCMCIA Network Adapter Issues
Date: 1999, Dec 13
From: Brian Mays brian

This message describes problems with two pcmcia cards. One is a 3com cardbus 10/100 (3c575), the other is a Xircom pccard CEM33 (10bt ethernet+modem 33.6). These cards are being used with an NEC Versa LX laptop.

The 3com card works ok except when ftping a file (of say, 184mb) the system freezes and there are messages on the console. They are 

  eth0: Host error, FIFO diagnostic register 0000.
        This message repeats 21 times
  eth0: Too much work in interrupt, status 8003.  Temporarily disabling
        functions (7ffc).

At that point, the system is completely unusable. If the card is ejected, the kernel oops's and the system is still unusable. Note that the error messages for the oops are unavailable, since it was very long and difficult to capture.

The Xircom card freezes the system. No messages are printed. When ejecting the card, the display shifts. Column 1 starts in the middle of the screen. The system is completely unusable after inserting the card.

Before upgrading to pcmcia 3.1.5, version 3.1.1 was installed. The 3com card has experienced problems with both versions. The Xircom adapter worked under the 3.1.1 version, but not 3.1.5.

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A favorable resolution on both counts

Re: Problems with 3c575 and CEM33 on an NEC Versa LX (Brian Mays)
Date: 1999, Dec 17
From: David Hinds <dhinds@pcmcia.sourceforge.org> 

All the problems are now more or less resolved...

-- the failures in the 3c575_cb driver's error handling code are
   partly fixed in 3.1.7, and fully fixed in the 16-Dec-99 beta
   drivers.  I still do not know what is causing the initial error (a
   HostError is supposed to be a PCI bus protocol problem, according
   to the 3Com documentation), but now, it is handled gracefully
   without disrupting network activity.

-- the Xircom card problem turned out to be an IO port conflict with
   another system device, that the Linux kernel had not detected.  A
   note will be added to the HOWTO, that ports 0x300-0x31f should be
   excluded on the Versa LX.

-- Dave
Problems with 3c575 and CEM33 on an NEC Versa LX

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