From 34768bc8329194b14e42ee408a84edfa40059046 Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Mon, 7 May 2007 23:06:27 -0700 Subject: [SPARC64] PCI: Use root list of pbm's instead of pci_controller_info's The idea is to move more and more things into the pbm, with the eventual goal of eliminating the pci_controller_info entirely as there really isn't any need for it. This stage of the transformations requires some reworking of the PCI error interrupt handling. It might be tricky to get rid of the pci_controller_info parenting for a few reasons: 1) When we get an uncorrectable or correctable error we want to interrogate the IOMMU and streaming cache of both PBMs for error status. These errors come from the UPA front-end which is shared between the two PBM PCI bus segments. Historically speaking this is why I choose the datastructure hierarchy of pci_controller_info-->pci_pbm_info 2) The probing does a portid/devhandle match to look for the 'other' pbm, but this is entirely an artifact and can be eliminated trivially. What we could do to solve #1 is to have a "buddy" pointer from one pbm to another. Signed-off-by: David S. Miller --- arch/sparc64/kernel/pci_impl.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/sparc64/kernel/pci_impl.h') diff --git a/arch/sparc64/kernel/pci_impl.h b/arch/sparc64/kernel/pci_impl.h index 41c3f5137306..3dd6d02b2d81 100644 --- a/arch/sparc64/kernel/pci_impl.h +++ b/arch/sparc64/kernel/pci_impl.h @@ -11,7 +11,7 @@ #include #include -extern struct pci_controller_info *pci_controller_root; +extern struct pci_pbm_info *pci_pbm_root; extern unsigned long pci_memspace_mask; extern int pci_num_controllers; -- cgit v1.2.2