Re: [linuxsh-dev] problems with PCI on SH7751 board

[Paul v. G. <pau...@ri...>]

On Tue, Jun 17, 2003 at 11:08:26PM +0100, David Woodhouse wrote:
> OK, the resources it's allocating there are completely bogus as far as I
> can tell. Can you double-check the values of PCIBIOS_MIN_MEM and
> PCIBIOS_MIN_IO as seen in drivers/pci/setup-res.c::pci_assign_resource()
I added a printk statement in pci_assign_resource. The output is:

pvg PCIBIOS_MIN_IO = 10000
pvg PCIBIOS_MIN_MEM = fd000000
pvg PCIBIOS_MIN_IO = 10000
pvg PCIBIOS_MIN_MEM = fd000000

BTW this routine seems to be called after the resources have already been
assigned.

It seems to be getting the values from include/asm-sh/pci.h:

#elif defined(CONFIG_SH_7751_SOLUTION_ENGINE)
// #define PCIBIOS_MIN_IO          0x4000
#define PCIBIOS_MIN_IO          0x10000
#define PCIBIOS_MIN_MEM         0xFD000000
#endif

> Make it stop assigning resources which your board I/O code doesn't think
> are PCI, and you'll be most of the way there :)
Sounds like a good idea... I'll start debugging the kernel a bit to see
what data it's working with.

Thanks.

Paul
-- 
Paul van Gool                                               Rincon Networks
pau...@ri...                              (805)-705-1442