Re: PCI question

From: Matthew Wilcox <>
Date: 2004-02-04 09:56:55
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

"Next the statesmen will invent cheap lies, putting the blame upon 
the nation that is attacked, and every man will be glad of those
conscience-soothing falsities, and will diligently study them, and refuse
to examine any refutations of them; and thus he will by and by convince 
himself that the war is just, and will thank God for the better sleep 
he enjoys after this process of grotesque self-deception." -- Mark Twain
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Received on Tue Feb 3 18:01:02 2004

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