diff options
| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2008-10-02 14:12:51 +0000 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2008-11-05 22:08:27 +1100 |
| commit | 1fd0f52583a85b21a394201b007bc1ee104b235d (patch) | |
| tree | 1141c75f26c8a44129a238e61b4b6906e3975038 | |
| parent | 454666eb78d890f5740ea1901f8b01a43c77c67c (diff) | |
powerpc: Fix domain numbers in /proc on 64-bit
The code to properly expose domain numbers in /proc is somewhat
bogus on ppc64 as it depends on the "buid" field being non-0,
but that field is really pseries specific.
This removes that code and makes ppc64 use the same code as 32-bit
which effectively decides whether to expose domains based on
ppc_pci_flags set by the platform, and sets the default for 64-bit
to enable domains and enable compatibility for domain 0 (which
strips the domain number for domain 0 to help with X servers).
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
| -rw-r--r-- | arch/powerpc/kernel/pci-common.c | 10 | ||||
| -rw-r--r-- | arch/powerpc/kernel/pci_64.c | 5 |
2 files changed, 9 insertions, 6 deletions
diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c index f36936d9fda3..607b43191206 100644 --- a/arch/powerpc/kernel/pci-common.c +++ b/arch/powerpc/kernel/pci-common.c @@ -53,8 +53,9 @@ static int global_phb_number; /* Global phb counter */ /* ISA Memory physical address */ resource_size_t isa_mem_base; -/* Default PCI flags is 0 */ -unsigned int ppc_pci_flags; +/* Default PCI flags is 0 on ppc32, modified at boot on ppc64 */ +unsigned int ppc_pci_flags = 0; + static struct dma_mapping_ops *pci_dma_ops; @@ -853,15 +854,12 @@ void __devinit pci_process_bridge_OF_ranges(struct pci_controller *hose, int pci_proc_domain(struct pci_bus *bus) { struct pci_controller *hose = pci_bus_to_host(bus); -#ifdef CONFIG_PPC64 - return hose->buid != 0; -#else + if (!(ppc_pci_flags & PPC_PCI_ENABLE_PROC_DOMAINS)) return 0; if (ppc_pci_flags & PPC_PCI_COMPAT_DOMAIN_0) return hose->global_number != 0; return 1; -#endif } void pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region, diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c index 3502b9101e6b..b771e3a20132 100644 --- a/arch/powerpc/kernel/pci_64.c +++ b/arch/powerpc/kernel/pci_64.c @@ -388,6 +388,11 @@ static int __init pcibios_init(void) if (pci_probe_only) ppc_pci_flags |= PPC_PCI_PROBE_ONLY; + /* On ppc64, we always enable PCI domains and we keep domain 0 + * backward compatible in /proc for video cards + */ + ppc_pci_flags |= PPC_PCI_ENABLE_PROC_DOMAINS | PPC_PCI_COMPAT_DOMAIN_0; + /* Scan all of the recorded PCI controllers. */ list_for_each_entry_safe(hose, tmp, &hose_list, list_node) { scan_phb(hose); |