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authorDavid S. Miller <davem@davemloft.net>2005-08-08 16:19:08 -0400
committerGreg Kroah-Hartman <gregkh@suse.de>2005-09-08 17:57:25 -0400
commit085ae41f66657a9655ce832b0a61832a06f0e1dc (patch)
tree215690b947b14fa18cbb2810db1a4082ad607e7a /include/asm-ia64/pci.h
parent064b53dbcc977dbf2753a67c2b8fc1c061d74f21 (diff)
[PATCH] Make sparc64 use setup-res.c
There were three changes necessary in order to allow sparc64 to use setup-res.c: 1) Sparc64 roots the PCI I/O and MEM address space using parent resources contained in the PCI controller structure. I'm actually surprised no other platforms do this, especially ones like Alpha and PPC{,64}. These resources get linked into the iomem/ioport tree when PCI controllers are probed. So the hierarchy looks like this: iomem --| PCI controller 1 MEM space --| device 1 device 2 etc. PCI controller 2 MEM space --| ... ioport --| PCI controller 1 IO space --| ... PCI controller 2 IO space --| ... You get the idea. The drivers/pci/setup-res.c code allocates using plain iomem_space and ioport_space as the root, so that wouldn't work with the above setup. So I added a pcibios_select_root() that is used to handle this. It uses the PCI controller struct's io_space and mem_space on sparc64, and io{port,mem}_resource on every other platform to keep current behavior. 2) quirk_io_region() is buggy. It takes in raw BUS view addresses and tries to use them as a PCI resource. pci_claim_resource() expects the resource to be fully formed when it gets called. The sparc64 implementation would do the translation but that's absolutely wrong, because if the same resource gets released then re-claimed we'll adjust things twice. So I fixed up quirk_io_region() to do the proper pcibios_bus_to_resource() conversion before passing it on to pci_claim_resource(). 3) I was mistakedly __init'ing the function methods the PCI controller drivers provide on sparc64 to implement some parts of these routines. This was, of course, easy to fix. So we end up with the following, and that nasty SPARC64 makefile ifdef in drivers/pci/Makefile is finally zapped. Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'include/asm-ia64/pci.h')
-rw-r--r--include/asm-ia64/pci.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/include/asm-ia64/pci.h b/include/asm-ia64/pci.h
index dba9f220be71..ef616fd4cb1b 100644
--- a/include/asm-ia64/pci.h
+++ b/include/asm-ia64/pci.h
@@ -156,6 +156,19 @@ extern void pcibios_resource_to_bus(struct pci_dev *dev,
156extern void pcibios_bus_to_resource(struct pci_dev *dev, 156extern void pcibios_bus_to_resource(struct pci_dev *dev,
157 struct resource *res, struct pci_bus_region *region); 157 struct resource *res, struct pci_bus_region *region);
158 158
159static inline struct resource *
160pcibios_select_root(struct pci_dev *pdev, struct resource *res)
161{
162 struct resource *root = NULL;
163
164 if (res->flags & IORESOURCE_IO)
165 root = &ioport_resource;
166 if (res->flags & IORESOURCE_MEM)
167 root = &iomem_resource;
168
169 return root;
170}
171
159#define pcibios_scan_all_fns(a, b) 0 172#define pcibios_scan_all_fns(a, b) 0
160 173
161#endif /* _ASM_IA64_PCI_H */ 174#endif /* _ASM_IA64_PCI_H */