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 pci_host_bridge;
  20struct device;
  21
  22struct hw_pci {
  23        struct msi_controller *msi_ctrl;
  24        struct pci_ops  *ops;
  25        int             nr_controllers;
  26        unsigned int    io_optional:1;
  27        void            **private_data;
  28        int             (*setup)(int nr, struct pci_sys_data *);
  29        int             (*scan)(int nr, struct pci_host_bridge *);
  30        void            (*preinit)(void);
  31        void            (*postinit)(void);
  32        u8              (*swizzle)(struct pci_dev *dev, u8 *pin);
  33        int             (*map_irq)(const struct pci_dev *dev, u8 slot, u8 pin);
  34        resource_size_t (*align_resource)(struct pci_dev *dev,
  35                                          const struct resource *res,
  36                                          resource_size_t start,
  37                                          resource_size_t size,
  38                                          resource_size_t align);
  39};
  40
  41/*
  42 * Per-controller structure
  43 */
  44struct pci_sys_data {
  45        struct list_head node;
  46        int             busnr;          /* primary bus number                   */
  47        u64             mem_offset;     /* bus->cpu memory mapping offset       */
  48        unsigned long   io_offset;      /* bus->cpu IO mapping offset           */
  49        struct pci_bus  *bus;           /* PCI bus                              */
  50        struct list_head resources;     /* root bus resources (apertures)       */
  51        struct resource io_res;
  52        char            io_res_name[12];
  53                                        /* Bridge swizzling                     */
  54        u8              (*swizzle)(struct pci_dev *, u8 *);
  55                                        /* IRQ mapping                          */
  56        int             (*map_irq)(const struct pci_dev *, u8, u8);
  57        void            *private_data;  /* platform controller private data     */
  58};
  59
  60/*
  61 * Call this with your hw_pci struct to initialise the PCI system.
  62 */
  63void pci_common_init_dev(struct device *, struct hw_pci *);
  64
  65/*
  66 * Compatibility wrapper for older platforms that do not care about
  67 * passing the parent device.
  68 */
  69static inline void pci_common_init(struct hw_pci *hw)
  70{
  71        pci_common_init_dev(NULL, hw);
  72}
  73
  74/*
  75 * Setup early fixed I/O mapping.
  76 */
  77#if defined(CONFIG_PCI)
  78extern void pci_map_io_early(unsigned long pfn);
  79#else
  80static inline void pci_map_io_early(unsigned long pfn) {}
  81#endif
  82
  83/*
  84 * PCI controllers
  85 */
  86extern struct pci_ops iop3xx_ops;
  87extern int iop3xx_pci_setup(int nr, struct pci_sys_data *);
  88extern void iop3xx_pci_preinit(void);
  89extern void iop3xx_pci_preinit_cond(void);
  90
  91extern struct pci_ops dc21285_ops;
  92extern int dc21285_setup(int nr, struct pci_sys_data *);
  93extern void dc21285_preinit(void);
  94extern void dc21285_postinit(void);
  95
  96#endif /* __ASM_MACH_PCI_H */
  97