[PATCH v2 3/3] PCI: ARM: add support for generic PCI host controller
Jason Gunthorpe
jgunthorpe at obsidianresearch.com
Wed Feb 19 01:48:50 EST 2014
On Wed, Feb 19, 2014 at 02:44:27AM +0000, Liviu Dudau wrote:
> I wish things were easier!
Yah, I've seen some of this complexity too..
A thought that crosses my head is to try and leave the entire arch
support intact and build a separate 'domain-driver-based' support
that completely replaces the arch support, a domain would use one or
the other but never both.
So pci_domain_nr could become:
struct pci_domain_driver *drv = pci_get_domain_driver(bus);
if (drv)
return drv->domain_nr;
else
return _arch_pci_domain_nr(bus);
And other funcs would change effectively the same way.
> And if someone has a good idea on how to determine the domain # from
> DT we can pluck it into the pcibios_root_bridge_prepare() function
> (either the generic version or the arch specific one).
You can probably start with 'of_alias_get_id'..
Jason
More information about the linux-arm-kernel
mailing list