RE: PowerSpan PCI / sym2 SCSI

On Fri, 2002-08-23 at 09:35, Allen Curtis wrote:

quoted

quoted

However it only works if you select the "normal I/O" option with the
SYM53C8xx version 2 driver. SYM53C8xx version 1 does not work. Version 2
does not work if the I/O option is not selected.

It might help if you described "does not work" in more detail... could
you paste error messages?

http://lists.linuxppc.org/linuxppc-dev/200208/msg00032.html
More information here than would need...

That's a lot more than I want to think about. :) Of course I'm assuming
you have your PCI config set up correctly - in that case the below is an
error I've seen.

quoted

I've seen a problem on PReP where although the SCSI card is addressed at
0xc0000000, the BAR is 0x0 (because of the host bridge offset). From
memory, the sym2 driver checks the BAR and if it's 0 errors out.
Removing that check or enabling "normal IO" worked fine. Of course, this
might not be your problem, but without actual error messages...

This sounds promising. Is this check in both versions of the driver? I don't
remember a BAR check. I thought it just ioremapped() the region. Could you
provide a reference? (line#)

I didn't notice you were still having problems with version 1 of the
driver; I thought you had resolved that. IME that almost always means
your PCI config is not correct.

The BAR check in sym2 is around line 2531 of sym53c8xx_2/sym_misc.c .

-Hollis


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