[vortex] RX overrun with 3COM 3c982

[Donald Becker]

On Mon, 18 Nov 2002, Claude Pignol wrote:
> >>>Hmmm, this might be doing long PCI bursts, not leaving enough for the
> >>>Ethernet.  If that's the case, the solution is to:
> >>>  Change the Min-grant / Max-Latency PCI settings
> >>>  Set the PCI bursts to much longer values, although the '982 has
> >>>    reasonable defaults.  The registers to change are the
> >>>    UpBurstThreshold at offset 0x3e and
> >>>    UpPriorityThreshold, offset 0x3c, default 4*32 = 128 bytes.

OK, more work, and an updated vortex-diag just for this:
  ftp://ftp.scyld.com/pub/diag/vortex-diag.c

Try setting
  -G 512

________________
vortex-diag.c:v2.11 11/19/2002

Corrected the Tx and Rx FIFO priority levels output when the '-g' flag
is passed.

Allow changing the Rx FIFO priority level with the -G <threshold-bytes> flag.

Modified the EEPROM size detection to work with chips where the EEPROM
command is in bits 9:8 rather than 7:6.  This isn't documented anywhere
(in fact a longer address is documented as straddling rather than moving
the command) but it does occur on a few chips.
________________


-- 
Donald Becker				becker@scyld.com
Scyld Computing Corporation		http://www.scyld.com
410 Severn Ave. Suite 210		Scyld Beowulf cluster system
Annapolis MD 21403			410-990-9993