LXR linux/arch/arm/include/asm/mach/pci.h

   1/*
   2 *  arch/arm/include/asm/mach/pci.h
   3 *
   4 *  Copyright (C) 2000 Russell King
   5 *
   6 * This program is free software; you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License version 2 as
   8 * published by the Free Software Foundation.
   9 */
  10
  11#ifndef __ASM_MACH_PCI_H
  12#define __ASM_MACH_PCI_H
  13
  14#include <linux/ioport.h>
  15
  16struct pci_sys_data;
  17struct pci_ops;
  18struct pci_bus;
  19struct device;
  20
  21struct hw_pci {
  22        struct msi_controller *msi_ctrl;
  23        struct pci_ops  *ops;
  24        int             nr_controllers;
  25        unsigned int    io_optional:1;
  26        void            **private_data;
  27        int             (*setup)(int nr, struct pci_sys_data *);
  28        struct pci_bus *(*scan)(int nr, struct pci_sys_data *);
  29        void            (*preinit)(void);
  30        void            (*postinit)(void);
  31        u8              (*swizzle)(struct pci_dev *dev, u8 *pin);
  32        int             (*map_irq)(const struct pci_dev *dev, u8 slot, u8 pin);
  33        resource_size_t (*align_resource)(struct pci_dev *dev,
  34                                          const struct resource *res,
  35                                          resource_size_t start,
  36                                          resource_size_t size,
  37                                          resource_size_t align);
  38};
  39
  40/*
  41 * Per-controller structure
  42 */
  43struct pci_sys_data {
  44        struct list_head node;
  45        int             busnr;          /* primary bus number                   */
  46        u64             mem_offset;     /* bus->cpu memory mapping offset       */
  47        unsigned long   io_offset;      /* bus->cpu IO mapping offset           */
  48        struct pci_bus  *bus;           /* PCI bus                              */
  49        struct list_head resources;     /* root bus resources (apertures)       */
  50        struct resource io_res;
  51        char            io_res_name[12];
  52                                        /* Bridge swizzling                     */
  53        u8              (*swizzle)(struct pci_dev *, u8 *);
  54                                        /* IRQ mapping                          */
  55        int             (*map_irq)(const struct pci_dev *, u8, u8);
  56        void            *private_data;  /* platform controller private data     */
  57};
  58
  59/*
  60 * Call this with your hw_pci struct to initialise the PCI system.
  61 */
  62void pci_common_init_dev(struct device *, struct hw_pci *);
  63
  64/*
  65 * Compatibility wrapper for older platforms that do not care about
  66 * passing the parent device.
  67 */
  68static inline void pci_common_init(struct hw_pci *hw)
  69{
  70        pci_common_init_dev(NULL, hw);
  71}
  72
  73/*
  74 * Setup early fixed I/O mapping.
  75 */
  76#if defined(CONFIG_PCI)
  77extern void pci_map_io_early(unsigned long pfn);
  78#else
  79static inline void pci_map_io_early(unsigned long pfn) {}
  80#endif
  81
  82/*
  83 * PCI controllers
  84 */
  85extern struct pci_ops iop3xx_ops;
  86extern int iop3xx_pci_setup(int nr, struct pci_sys_data *);
  87extern void iop3xx_pci_preinit(void);
  88extern void iop3xx_pci_preinit_cond(void);
  89
  90extern struct pci_ops dc21285_ops;
  91extern int dc21285_setup(int nr, struct pci_sys_data *);
  92extern void dc21285_preinit(void);
  93extern void dc21285_postinit(void);
  94
  95#endif /* __ASM_MACH_PCI_H */
  96