From fa462f2d75e2437b5757069d3d7d27b1e50285cb Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Thu, 20 Dec 2007 14:54:49 +1100 Subject: [PATCH] [POWERPC] pci32: Add platform option to enable /proc PCI domains This adds flags the platforms can use to enable domain numbers in /proc/bus/pci. Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Paul Mackerras --- arch/powerpc/kernel/pci-common.c | 16 ++++++++++++++++ arch/powerpc/kernel/pci_64.c | 8 -------- include/asm-powerpc/pci-bridge.h | 5 +++++ include/asm-powerpc/pci.h | 14 ++++---------- 4 files changed, 25 insertions(+), 18 deletions(-) diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c index 9979c43cc8..68102ce7e4 100644 --- a/arch/powerpc/kernel/pci-common.c +++ b/arch/powerpc/kernel/pci-common.c @@ -639,3 +639,19 @@ void __devinit pci_process_bridge_OF_ranges(struct pci_controller *hose, hose->mem_resources[memno-1] = tmp; } } + +/* Decide whether to display the domain number in /proc */ +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 +} + diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c index 3e7cf7af3b..e0f3731c3a 100644 --- a/arch/powerpc/kernel/pci_64.c +++ b/arch/powerpc/kernel/pci_64.c @@ -586,14 +586,6 @@ int pcibios_enable_device(struct pci_dev *dev, int mask) return 0; } -/* Decide whether to display the domain number in /proc */ -int pci_proc_domain(struct pci_bus *bus) -{ - struct pci_controller *hose = pci_bus_to_host(bus); - return hose->buid != 0; -} - - #ifdef CONFIG_HOTPLUG int pcibios_unmap_io_space(struct pci_bus *bus) diff --git a/include/asm-powerpc/pci-bridge.h b/include/asm-powerpc/pci-bridge.h index 2972f0d3af..fed8f52071 100644 --- a/include/asm-powerpc/pci-bridge.h +++ b/include/asm-powerpc/pci-bridge.h @@ -30,6 +30,11 @@ enum { * ISA forwarding enabled */ PPC_PCI_CAN_SKIP_ISA_ALIGN = 0x00000008, + + /* Enable domain numbers in /proc */ + PPC_PCI_ENABLE_PROC_DOMAINS = 0x00000010, + /* ... except for domain 0 */ + PPC_PCI_COMPAT_DOMAIN_0 = 0x00000020, }; diff --git a/include/asm-powerpc/pci.h b/include/asm-powerpc/pci.h index 47cc117a14..2883f56670 100644 --- a/include/asm-powerpc/pci.h +++ b/include/asm-powerpc/pci.h @@ -98,9 +98,6 @@ static inline void pci_dma_burst_advice(struct pci_dev *pdev, #define get_pci_dma_ops() NULL #endif -/* Decide whether to display the domain number in /proc */ -extern int pci_proc_domain(struct pci_bus *bus); - #else /* 32-bit */ #ifdef CONFIG_PCI @@ -112,17 +109,14 @@ static inline void pci_dma_burst_advice(struct pci_dev *pdev, *strategy_parameter = ~0UL; } #endif - -/* Set the name of the bus as it appears in /proc/bus/pci */ -static inline int pci_proc_domain(struct pci_bus *bus) -{ - return 0; -} - #endif /* CONFIG_PPC64 */ extern int pci_domain_nr(struct pci_bus *bus); +/* Decide whether to display the domain number in /proc */ +extern int pci_proc_domain(struct pci_bus *bus); + + struct vm_area_struct; /* Map a range of PCI memory or I/O space for a device into user space */ int pci_mmap_page_range(struct pci_dev *pdev, struct vm_area_struct *vma, -- 2.39.5