Re: CONFIG_SCSI_SYM53C8XX_IOMAPPED

[Jens Schmalzing <jens.schmalzing@physik.uni-muenchen.de>]

Hi,

Matthew Wilcox writes:

> > It outputs a "can't map PCI MMIO region" and does nothing at all.

> Interesting.  This can only happen if ioremap() returns NULL.

Sorry.  I got the message completely wrong.  I really was:

| PCI: Enabling device 0000:00:0c.0 (0000 -> 0003)
| sym.0.12.0: MMIO base address disabled.

> lspci -v of that device would be interesting to see.

| 0000:00:0c.0 SCSI storage controller: LSI Logic / Symbios Logic 53c810 (rev 02)
|         Flags: bus master, medium devsel, latency 128, IRQ 13
|         I/O ports at 1000 [size=256]
|         [virtual] Memory at c0000000 (32-bit, non-prefetchable) [size=256]

> > CONFIG_SCSI_SYM53C8XX_2=m
> > CONFIG_SCSI_SYM53C8XX_DMA_ADDRESSING_MODE=1
> > CONFIG_SCSI_SYM53C8XX_DEFAULT_TAGS=16
> > CONFIG_SCSI_SYM53C8XX_MAX_TAGS=64
> > # CONFIG_SCSI_SYM53C8XX_IOMAPPED is not set

> Those are good config options.

So I used them for a test kernel, built from kernel-source-2.6.8 and
your little debugging patch applied.  What happened is this:

| map 0xc4000000 length 128 returned 0xf4000000

and the kernel initialized the SCSI controller correctly - as I could
verify, this is due to the backported patch from 2.6.9-rc2 that Hollis
Blanchard sent here earlier in Bug#271852.  So that problem will be
solved in the next revision.

Thanks for your time and help.

Regards, Jens.

-- 
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