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    SubjectRe: [PATCH -rt DO NOT APPLY] Fix for tg3 networking lockup
    On Thu, Aug 03, 2006 at 11:36:47AM -0700, Michael Chan wrote:
    > On Thu, 2006-08-03 at 20:00 +1000, Herbert Xu wrote:
    > > Theodore Tso <> wrote:
    > > >
    > > > I'm sending this on mostly because it was a bit of a pain to track down,
    > > > and hopefully it will save time if anyone else hits this while playing
    > > > with the -rt kernel. It is NOT the right way to fix things, so please
    > > > don't even think of applying this patch (unless you need it, in your own
    > > > local tree :-).
    > > >
    > > > One of these days when we have time to breath we'll look into fixing
    > > > this the right way, if someone doesn't beat us to it first. :-)
    > >
    > Ted, what tg3 hardware is having this timer related problem? Can you
    > send me the tg3 probing output?

    tg3.c:v3.49 (Feb 2, 2006)
    ACPI: PCI Interrupt 0000:02:01.0[A] -> GSI 24 (level, low) -> IRQ 17
    eth0: Tigon3 [partno(BCM95704s) rev 2100 PHY(serdes)] (PCIX:100MHz:64-bit) 10/100/1000BaseT Ethernet 00:14:5e:86:44:24
    eth0: RXcsums[1] LinkChgREG[0] MIirq[0] ASF[1] Split[0] WireSpeed[0] TSOcap[0]
    eth0: dma_rwctrl[769f4000] dma_mask[64-bit]

    02:01.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5704S Gigabit Ethernet (rev 10)
    Subsystem: IBM: Unknown device 0301
    Flags: bus master, 66Mhz, medium devsel, latency 64, IRQ 17
    Memory at efff0000 (64-bit, non-prefetchable) [size=64K]
    Capabilities: [40] PCI-X non-bridge device.
    Capabilities: [48] Power Management version 2
    Capabilities: [50] Vital Product Data
    Capabilities: [58] Message Signalled Interrupts: 64bit+ Queue=0/3 Enable-

    The other interesting bit of information is that after networking card
    goes dead and I do the "ifdown eth0; ifup eth0", the following printk
    shows up:

    tg3: tg3_abort_hw timed out for eth0, TX_MODE_ENABLE will not clear MAC_TX_MODE=ffffffff

    This is from an IBM LS-20 blade.

    Is this helpful?

    - Ted
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