[eepro100] 82557 driver can drive 82559..?
atul srivastava" <email@example.com
Fri Aug 30 09:48:00 2002
I am using eepro100 driver of etherboot package.
my driver strangley hangs on codes like loading or storing from
SCBStatus , SCBPointer or SCBCmd.
this driver is minimised verson of normal linux one ,
and has only one recv. descriptor that is swcanned with
currently it is hanging on ,
all these points through some sort of PCI issues.
but reason i put my query on eepro100 list is that this
hang is only when i receive a packet before etherboot
sends a BOOTP request otherwise it goes fine and goes on
sending bootp request MAX_TRY times.
PCI BARS initialisation seems to be o.k , also i am able
to read the MAC address and correctly checksum the
what kind of PCI or card initialisation issue is possible..?
On Wed, 28 Aug 2002 Donald Becker wrote :
>On 28 Aug 2002, atul srivastava wrote:
> > this driver is written for 82557 but i am using 82559
> > card .
> > my question is that can a 82557 driver aplicable to both 82559
> > 82559ER ?
>For the most part, yes. The '559 and '559ER were designed to be
>backwards compatible, with new features. But, as is typical with
>things, they do their own set of bugs.
> > also my card reports status 0090 before and after Transmit
> > that as per manual indicates no resources,
>There are various bugs that trigger a "no resources" report. In
>case my guess is that you have encountered the timing bug when
>the SCBPointer, RxAddrLoad or CUCmdBase. These operations used
>effectively instantaneous (less than a PCI bus transaction). But
>firmware change in a later chip caused them to take an
>just undocumented) amount of time.
> outl(0, ioaddr + SCBPointer);
> inl(ioaddr + SCBPointer); /* Flush to PCI. */
> udelay(10); /* Bogus, but it avoids the bug. */
> /* Note: these next two operations can take a while. */
> do_slow_command(dev, RxAddrLoad);
> do_slow_command(dev, CUCmdBase);
>Donald Becker firstname.lastname@example.org
>Scyld Computing Corporation http://www.scyld.com
>410 Severn Ave. Suite 210 Second Generation Beowulf Clusters
>Annapolis MD 21403 410-990-9993
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