From f8ef2705969e0409efedeb889445da67806ba9ea Mon Sep 17 00:00:00 2001 From: Paul Mackerras Date: Sat, 19 Nov 2005 20:46:04 +1100 Subject: [PATCH] powerpc: Merge pci.h This involves some minor changes: a few unused functions that the ppc32 pci.c provides are no longer declared here or exported; pcibios_assign_all_busses now just refers to the pci_assign_all_buses variable on both 32-bit and 64-bit; pcibios_scan_all_fns is now just 0 instead of a function that always returns 0 on 64-bit. Signed-off-by: Paul Mackerras --- arch/powerpc/kernel/pci_64.c | 18 +--- arch/powerpc/kernel/ppc_ksyms.c | 3 - include/{asm-ppc64 => asm-powerpc}/pci.h | 110 +++++++++++++++++------ include/asm-powerpc/ppc-pci.h | 2 - 4 files changed, 83 insertions(+), 50 deletions(-) rename include/{asm-ppc64 => asm-powerpc}/pci.h (63%) diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c index 5a5b24685081..8b6008ab217d 100644 --- a/arch/powerpc/kernel/pci_64.c +++ b/arch/powerpc/kernel/pci_64.c @@ -40,7 +40,7 @@ #endif unsigned long pci_probe_only = 1; -unsigned long pci_assign_all_buses = 0; +int pci_assign_all_buses = 0; /* * legal IO pages under MAX_ISA_PORT. This is to ensure we don't touch @@ -55,11 +55,6 @@ static void fixup_resource(struct resource *res, struct pci_dev *dev); static void do_bus_setup(struct pci_bus *bus); #endif -unsigned int pcibios_assign_all_busses(void) -{ - return pci_assign_all_buses; -} - /* pci_io_base -- the base address from which io bars are offsets. * This is the lowest I/O base address (so bar values are always positive), * and it *must* be the start of ISA space if an ISA bus exists because @@ -1186,17 +1181,6 @@ void phbs_remap_io(void) remap_bus_range(hose->bus); } -/* - * ppc64 can have multifunction devices that do not respond to function 0. - * In this case we must scan all functions. - * XXX this can go now, we use the OF device tree in all the - * cases that caused problems. -- paulus - */ -int pcibios_scan_all_fns(struct pci_bus *bus, int devfn) -{ - return 0; -} - static void __devinit fixup_resource(struct resource *res, struct pci_dev *dev) { struct pci_controller *hose = pci_bus_to_host(dev->bus); diff --git a/arch/powerpc/kernel/ppc_ksyms.c b/arch/powerpc/kernel/ppc_ksyms.c index 59846b40d521..af4d1bc9a2eb 100644 --- a/arch/powerpc/kernel/ppc_ksyms.c +++ b/arch/powerpc/kernel/ppc_ksyms.c @@ -146,9 +146,6 @@ EXPORT_SYMBOL(pci_bus_io_base); EXPORT_SYMBOL(pci_bus_io_base_phys); EXPORT_SYMBOL(pci_bus_mem_base_phys); EXPORT_SYMBOL(pci_bus_to_hose); -EXPORT_SYMBOL(pci_resource_to_bus); -EXPORT_SYMBOL(pci_phys_to_bus); -EXPORT_SYMBOL(pci_bus_to_phys); #endif /* CONFIG_PCI */ #ifdef CONFIG_NOT_COHERENT_CACHE diff --git a/include/asm-ppc64/pci.h b/include/asm-powerpc/pci.h similarity index 63% rename from include/asm-ppc64/pci.h rename to include/asm-powerpc/pci.h index fafdf885a3cc..d5934a076bd0 100644 --- a/include/asm-ppc64/pci.h +++ b/include/asm-powerpc/pci.h @@ -1,5 +1,5 @@ -#ifndef __PPC64_PCI_H -#define __PPC64_PCI_H +#ifndef __ASM_POWERPC_PCI_H +#define __ASM_POWERPC_PCI_H #ifdef __KERNEL__ /* @@ -18,6 +18,7 @@ #include #include #include +#include #include @@ -26,11 +27,21 @@ struct pci_dev; -#ifdef CONFIG_PPC_ISERIES +/* Values for the `which' argument to sys_pciconfig_iobase syscall. */ +#define IOBASE_BRIDGE_NUMBER 0 +#define IOBASE_MEMORY 1 +#define IOBASE_IO 2 +#define IOBASE_ISA_IO 3 +#define IOBASE_ISA_MEM 4 + +/* + * Set this to 1 if you want the kernel to re-assign all PCI + * bus numbers + */ +extern int pci_assign_all_buses; +#define pcibios_assign_all_busses() (pci_assign_all_buses) + #define pcibios_scan_all_fns(a, b) 0 -#else -extern int pcibios_scan_all_fns(struct pci_bus *bus, int devfn); -#endif static inline void pcibios_set_master(struct pci_dev *dev) { @@ -50,6 +61,7 @@ static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel) return channel ? 15 : 14; } +#ifdef CONFIG_PPC64 #define HAVE_ARCH_PCI_MWI 1 static inline int pcibios_prep_mwi(struct pci_dev *dev) { @@ -64,12 +76,10 @@ static inline int pcibios_prep_mwi(struct pci_dev *dev) return 0; } -extern unsigned int pcibios_assign_all_busses(void); - extern struct dma_mapping_ops pci_dma_ops; /* For DAC DMA, we currently don't support it by default, but - * we let the platform override this + * we let 64-bit platforms override this. */ static inline int pci_dac_dma_supported(struct pci_dev *hwdev,u64 mask) { @@ -102,6 +112,35 @@ 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); +#else /* 32-bit */ + +#ifdef CONFIG_PCI +static inline void pci_dma_burst_advice(struct pci_dev *pdev, + enum pci_dma_burst_strategy *strat, + unsigned long *strategy_parameter) +{ + *strat = PCI_DMA_BURST_INFINITY; + *strategy_parameter = ~0UL; +} +#endif + +/* + * At present there are very few 32-bit PPC machines that can have + * memory above the 4GB point, and we don't support that. + */ +#define pci_dac_dma_supported(pci_dev, mask) (0) + +/* Return the index of the PCI controller for device PDEV. */ +#define pci_domain_nr(bus) ((struct pci_controller *)(bus)->sysdata)->index + +/* 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 */ + 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, @@ -110,6 +149,7 @@ int pci_mmap_page_range(struct pci_dev *pdev, struct vm_area_struct *vma, /* Tell drivers/pci/proc.c that we have pci_mmap_page_range() */ #define HAVE_PCI_MMAP 1 +#ifdef CONFIG_PPC64 /* pci_unmap_{single,page} is not a nop, thus... */ #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) \ dma_addr_t ADDR_NAME; @@ -124,22 +164,40 @@ int pci_mmap_page_range(struct pci_dev *pdev, struct vm_area_struct *vma, #define pci_unmap_len_set(PTR, LEN_NAME, VAL) \ (((PTR)->LEN_NAME) = (VAL)) -/* The PCI address space does equal the physical memory - * address space. The networking and block device layers use +/* The PCI address space does not equal the physical memory address + * space (we have an IOMMU). The IDE and SCSI device layers use * this boolean for bounce buffer decisions. */ #define PCI_DMA_BUS_IS_PHYS (0) + +#else /* 32-bit */ + +/* The PCI address space does equal the physical memory + * address space (no IOMMU). The IDE and SCSI device layers use + * this boolean for bounce buffer decisions. + */ +#define PCI_DMA_BUS_IS_PHYS (1) + +/* pci_unmap_{page,single} is a nop so... */ +#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) +#define DECLARE_PCI_UNMAP_LEN(LEN_NAME) +#define pci_unmap_addr(PTR, ADDR_NAME) (0) +#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0) +#define pci_unmap_len(PTR, LEN_NAME) (0) +#define pci_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0) + +#endif /* CONFIG_PPC64 */ -extern void -pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region, +extern void pcibios_resource_to_bus(struct pci_dev *dev, + struct pci_bus_region *region, struct resource *res); -extern void -pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res, +extern void pcibios_bus_to_resource(struct pci_dev *dev, + struct resource *res, struct pci_bus_region *region); -static inline struct resource * -pcibios_select_root(struct pci_dev *pdev, struct resource *res) +static inline struct resource *pcibios_select_root(struct pci_dev *pdev, + struct resource *res) { struct resource *root = NULL; @@ -151,14 +209,12 @@ pcibios_select_root(struct pci_dev *pdev, struct resource *res) return root; } -extern int -unmap_bus_range(struct pci_bus *bus); +extern int unmap_bus_range(struct pci_bus *bus); -extern int -remap_bus_range(struct pci_bus *bus); +extern int remap_bus_range(struct pci_bus *bus); -extern void -pcibios_fixup_device_resources(struct pci_dev *dev, struct pci_bus *bus); +extern void pcibios_fixup_device_resources(struct pci_dev *dev, + struct pci_bus *bus); extern struct pci_controller *init_phb_dynamic(struct device_node *dn); @@ -180,14 +236,12 @@ extern pgprot_t pci_phys_mem_access_prot(struct file *file, unsigned long size, pgprot_t prot); -#ifdef CONFIG_PPC_MULTIPLATFORM +#if defined(CONFIG_PPC_MULTIPLATFORM) || defined(CONFIG_PPC32) #define HAVE_ARCH_PCI_RESOURCE_TO_USER extern void pci_resource_to_user(const struct pci_dev *dev, int bar, const struct resource *rsrc, u64 *start, u64 *end); -#endif /* CONFIG_PPC_MULTIPLATFORM */ - +#endif /* CONFIG_PPC_MULTIPLATFORM || CONFIG_PPC32 */ #endif /* __KERNEL__ */ - -#endif /* __PPC64_PCI_H */ +#endif /* __ASM_POWERPC_PCI_H */ diff --git a/include/asm-powerpc/ppc-pci.h b/include/asm-powerpc/ppc-pci.h index 2e36e5a7f4f3..36cdc869e580 100644 --- a/include/asm-powerpc/ppc-pci.h +++ b/include/asm-powerpc/ppc-pci.h @@ -48,8 +48,6 @@ extern void pSeries_final_fixup(void); extern void pSeries_irq_bus_setup(struct pci_bus *bus); extern unsigned long pci_probe_only; -extern unsigned long pci_assign_all_buses; -extern int pci_read_irq_line(struct pci_dev *pci_dev); /* ---- EEH internal-use-only related routines ---- */ #ifdef CONFIG_EEH -- 2.30.2