Overlap in PCI memory ranges

[Gary Corcoran]

Coleman Kane wrote:
> Hello all,
> 
> I've got a problem with overlapping PCI memory ranges between my SATA
> controller and my High-Def Audio controller:
> 
> atapci1: <ATI IXP600 UDMA133 controller> port
> 0x1f0-0x1f7,0x3f6,0x170-0x177,0x376,0x5040-0x504f irq 16 at device 20.1
> on pci0
> pcm0: <ATI SB600 High Definition Audio Controller> mem
> 0xd0608000-0xd060bfff irq 16 at device 20.2 on pci0

Sorry, I couldn't help you even if I saw the problem, but I can't see any
overlap in the above.  I see a bunch of relatively low addresses, and one
high memory address range.  Where's the conflict ??

Gary

> I am curious if anybody knows of any way to overwrite the boot-up memory
> range in the PCI configuration. I have tried:
> pciconf -w pci0:0:20:2 16 0xd0614004
> 
> after inpecting that the above PCI reg's value before this is
> 0xd0608004. It seems that if I try writing the config register to
> anything between d0608000 and d0614000, the register gets reverted back
> to 0xd0608004. If I go higher than 0xd0614004, then it gets reverted to
> that number.
> 
> I am not very familiar with PCI configuration (or other facilities
> FreeBSD uses to assign resources to PCI devices), so I'd like to know if
> anybody can help me sort this problem out which is preventing AHCI and
> HDA-Audio from working...
> 
> --
> Coleman Kane