/* * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. */ #ifndef _ASM_PCI_H #define _ASM_PCI_H #include #ifdef __KERNEL__ /* * This file essentially defines the interface between board * specific PCI code and MIPS common PCI code. Should potentially put * into include/asm/pci.h file. */ #include #include /* * Each pci channel is a top-level PCI bus seem by CPU. A machine with * multiple PCI channels may have multiple PCI host controllers or a * single controller supporting multiple channels. */ struct pci_controller { struct pci_controller *next; struct pci_bus *bus; struct device_node *of_node; struct pci_ops *pci_ops; struct resource *mem_resource; unsigned long mem_offset; struct resource *io_resource; unsigned long io_offset; unsigned long io_map_base; struct resource *busn_resource; unsigned long busn_offset; unsigned int index; /* For compatibility with current (as of July 2003) pciutils and XFree86. Eventually will be removed. */ unsigned int need_domain_info; int iommu; /* Optional access methods for reading/writing the bus number of the PCI controller */ int (*get_busno)(void); void (*set_busno)(int busno); }; /* * Used by boards to register their PCI busses before the actual scanning. */ extern void register_pci_controller(struct pci_controller *hose); extern void unregister_pci_controller(struct pci_controller *hose); /* * board supplied pci irq fixup routine */ extern int pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin); /* Can be used to override the logic in pci_scan_bus for skipping already-configured bus numbers - to be used for buggy BIOSes or architectures with incomplete PCI setup by the loader */ extern unsigned int pcibios_assign_all_busses(void); extern unsigned long PCIBIOS_MIN_IO; extern unsigned long PCIBIOS_MIN_MEM; #define PCIBIOS_MIN_CARDBUS_IO 0x4000 extern void pcibios_set_master(struct pci_dev *dev); #define HAVE_PCI_MMAP extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma, enum pci_mmap_state mmap_state, int write_combine); #define HAVE_ARCH_PCI_RESOURCE_TO_USER static inline void pci_resource_to_user(const struct pci_dev *dev, int bar, const struct resource *rsrc, resource_size_t *start, resource_size_t *end) { phys_addr_t size = resource_size(rsrc); *start = fixup_bigphys_addr(rsrc->start, size); *end = rsrc->start + size - 1; } /* * Dynamic DMA mapping stuff. * MIPS has everything mapped statically. */ #include #include #include #include #include #include struct pci_dev; /* * The PCI address space does equal the physical memory address space. The * networking and block device layers use this boolean for bounce buffer * decisions. This is set if any hose does not have an IOMMU. */ extern unsigned int PCI_DMA_BUS_IS_PHYS; #ifdef CONFIG_PCI_DOMAINS #define pci_domain_nr(bus) ((struct pci_controller *)(bus)->sysdata)->index static inline int pci_proc_domain(struct pci_bus *bus) { struct pci_controller *hose = bus->sysdata; return hose->need_domain_info; } #endif /* CONFIG_PCI_DOMAINS */ extern void pcibios_reset_busno(void); #ifdef CONFIG_AVM_PCI_RECOVERY extern void ath_pci_reset(void); extern void ath_pci_down(void); extern void ath_pci_up(void); #endif #endif /* __KERNEL__ */ /* implement the pci_ DMA API in terms of the generic device dma_ one */ #include /* Do platform specific device initialization at pci_enable_device() time */ extern int pcibios_plat_dev_init(struct pci_dev *dev); /* Chances are this interrupt is wired PC-style ... */ static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel) { return channel ? 15 : 14; } extern char * (*pcibios_plat_setup)(char *str); #ifdef CONFIG_OF /* this function parses memory ranges from a device node */ extern void pci_load_of_ranges(struct pci_controller *hose, struct device_node *node); #else static inline void pci_load_of_ranges(struct pci_controller *hose, struct device_node *node) {} #endif #endif /* _ASM_PCI_H */