Re: PCI question

[Matthew Wilcox <willy@debian.org>]

On Tue, Feb 03, 2004 at 04:35:26PM -0600, Pat Gefre wrote:
> The usage of pci_dev.sysdata is a bit confusing to me. I had initially
> thought that this was available for any system specific use,  but then
> in pcibios_fixup_device_resources() it is specifically cast as a struct
> pci_controller *:

It's up to the architecture how it's used.  ia64 has decided that it
shall be a struct pci_controller *.

> In this funtion  the pci_controller elements 'window[]' and 'windows'
> are also used.  This implies to me that these fields must be maintained
> in any system specific structure ? i.e.
> 
> struct my_sysdata_struct {
>    struct pci_controller dummy;
>    /* my stuff would go here */
>    struct my_real_sysdata_stuff;
> };
> 
> Yet I don't see where anyone else is doing the above. Am I missing
> something obvious ??

Urgh, don't do that.  What do you need to do that can't be added to the
pci_controller?

-- 
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