#ifndef __ASM_POWERPC_PCI_H #define __ASM_POWERPC_PCI_H #ifdef __KERNEL__ /* * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ #include <linux/types.h> #include <linux/slab.h> #include <linux/string.h> #include <linux/dma-mapping.h> #include <asm/machdep.h> #include <asm/scatterlist.h> #include <asm/io.h> #include <asm/prom.h> #include <asm/pci-bridge.h> #include <asm-generic/pci-dma-compat.h> #define PCIBIOS_MIN_IO 0x1000 #define PCIBIOS_MIN_MEM 0x10000000 struct pci_dev; /* 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 static inline void pcibios_set_master(struct pci_dev *dev) { /* No special bus mastering setup handling */ } static inline void pcibios_penalize_isa_irq(int irq, int active) { /* We don't do dynamic PCI IRQ allocation */ } #define HAVE_ARCH_PCI_GET_LEGACY_IDE_IRQ static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel) { if (ppc_md.pci_get_legacy_ide_irq) return ppc_md.pci_get_legacy_ide_irq(dev, channel); return channel ? 15 : 14; } #ifdef CONFIG_PPC64 /* * We want to avoid touching the cacheline size or MWI bit. * pSeries firmware sets the cacheline size (which is not the cpu cacheline * size in all cases) and hardware treats MWI the same as memory write. */ #define PCI_DISABLE_MWI #ifdef CONFIG_PCI extern void set_pci_dma_ops(struct dma_mapping_ops *dma_ops); extern struct dma_mapping_ops *get_pci_dma_ops(void); static inline void pci_dma_burst_advice(struct pci_dev *pdev, enum pci_dma_burst_strategy *strat, unsigned long *strategy_parameter) { unsigned long cacheline_size; u8 byte; pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &byte); if (byte == 0) cacheline_size = 1024; else cacheline_size = (int) byte * 4; *strat = PCI_DMA_BURST_MULTIPLE; *strategy_parameter = cacheline_size; } #else /* CONFIG_PCI */ #define set_pci_dma_ops(d) #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 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 /* 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); 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, enum pci_mmap_state mmap_state, int write_combine); /* Tell drivers/pci/proc.c that we have pci_mmap_page_range() */ #define HAVE_PCI_MMAP 1 #if defined(CONFIG_PPC64) || defined(CONFIG_NOT_COHERENT_CACHE) /* * For 64-bit kernels, pci_unmap_{single,page} is not a nop. * For 32-bit non-coherent kernels, pci_dma_sync_single_for_cpu() and * so on are not nops. * and thus... */ #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) \ dma_addr_t ADDR_NAME; #define DECLARE_PCI_UNMAP_LEN(LEN_NAME) \ __u32 LEN_NAME; #define pci_unmap_addr(PTR, ADDR_NAME) \ ((PTR)->ADDR_NAME) #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) \ (((PTR)->ADDR_NAME) = (VAL)) #define pci_unmap_len(PTR, LEN_NAME) \ ((PTR)->LEN_NAME) #define pci_unmap_len_set(PTR, LEN_NAME, VAL) \ (((PTR)->LEN_NAME) = (VAL)) #else /* 32-bit && coherent */ /* 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 || CONFIG_NOT_COHERENT_CACHE */ #ifdef CONFIG_PPC64 /* 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) #endif /* CONFIG_PPC64 */ 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, struct pci_bus_region *region); static inline struct resource *pcibios_select_root(struct pci_dev *pdev, struct resource *res) { struct resource *root = NULL; if (res->flags & IORESOURCE_IO) root = &ioport_resource; if (res->flags & IORESOURCE_MEM) root = &iomem_resource; return root; } extern void pcibios_fixup_device_resources(struct pci_dev *dev, struct pci_bus *bus); extern void pcibios_setup_new_device(struct pci_dev *dev); extern void pcibios_claim_one_bus(struct pci_bus *b); extern struct pci_controller *init_phb_dynamic(struct device_node *dn); extern struct pci_dev *of_create_pci_dev(struct device_node *node, struct pci_bus *bus, int devfn); extern void of_scan_pci_bridge(struct device_node *node, struct pci_dev *dev); extern void of_scan_bus(struct device_node *node, struct pci_bus *bus); extern int pci_read_irq_line(struct pci_dev *dev); struct file; extern pgprot_t pci_phys_mem_access_prot(struct file *file, unsigned long pfn, unsigned long size, pgprot_t prot); #define HAVE_ARCH_PCI_RESOURCE_TO_USER extern void pci_resource_to_user(const struct pci_dev *dev, int bar, const struct resource *rsrc, resource_size_t *start, resource_size_t *end); #endif /* __KERNEL__ */ #endif /* __ASM_POWERPC_PCI_H */