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#ifdef CONFIG_PCI_DOMAINS
  23        int             domain;
  24#endif
  25#ifdef CONFIG_PCI_MSI
  26        struct msi_controller *msi_ctrl;
  27#endif
  28        struct pci_ops  *ops;
  29        int             nr_controllers;
  30        void            **private_data;
  31        int             (*setup)(int nr, struct pci_sys_data *);
  32        struct pci_bus *(*scan)(int nr, struct pci_sys_data *);
  33        void            (*preinit)(void);
  34        void            (*postinit)(void);
  35        u8              (*swizzle)(struct pci_dev *dev, u8 *pin);
  36        int             (*map_irq)(const struct pci_dev *dev, u8 slot, u8 pin);
  37        resource_size_t (*align_resource)(struct pci_dev *dev,
  38                                          const struct resource *res,
  39                                          resource_size_t start,
  40                                          resource_size_t size,
  41                                          resource_size_t align);
  42};
  43
  44/*
  45 * Per-controller structure
  46 */
  47struct pci_sys_data {
  48#ifdef CONFIG_PCI_DOMAINS
  49        int             domain;
  50#endif
  51#ifdef CONFIG_PCI_MSI
  52        struct msi_controller *msi_ctrl;
  53#endif
  54        struct list_head node;
  55        int             busnr;          /* primary bus number                   */
  56        u64             mem_offset;     /* bus->cpu memory mapping offset       */
  57        unsigned long   io_offset;      /* bus->cpu IO mapping offset           */
  58        struct pci_bus  *bus;           /* PCI bus                              */
  59        struct list_head resources;     /* root bus resources (apertures)       */
  60        struct resource io_res;
  61        char            io_res_name[12];
  62                                        /* Bridge swizzling                     */
  63        u8              (*swizzle)(struct pci_dev *, u8 *);
  64                                        /* IRQ mapping                          */
  65        int             (*map_irq)(const struct pci_dev *, u8, u8);
  66                                        /* Resource alignement requirements     */
  67        resource_size_t (*align_resource)(struct pci_dev *dev,
  68                                          const struct resource *res,
  69                                          resource_size_t start,
  70                                          resource_size_t size,
  71                                          resource_size_t align);
  72        void            *private_data;  /* platform controller private data     */
  73};
  74
  75/*
  76 * Call this with your hw_pci struct to initialise the PCI system.
  77 */
  78void pci_common_init_dev(struct device *, struct hw_pci *);
  79
  80/*
  81 * Compatibility wrapper for older platforms that do not care about
  82 * passing the parent device.
  83 */
  84static inline void pci_common_init(struct hw_pci *hw)
  85{
  86        pci_common_init_dev(NULL, hw);
  87}
  88
  89/*
  90 * Setup early fixed I/O mapping.
  91 */
  92#if defined(CONFIG_PCI)
  93extern void pci_map_io_early(unsigned long pfn);
  94#else
  95static inline void pci_map_io_early(unsigned long pfn) {}
  96#endif
  97
  98/*
  99 * PCI controllers
 100 */
 101extern struct pci_ops iop3xx_ops;
 102extern int iop3xx_pci_setup(int nr, struct pci_sys_data *);
 103extern void iop3xx_pci_preinit(void);
 104extern void iop3xx_pci_preinit_cond(void);
 105
 106extern struct pci_ops dc21285_ops;
 107extern int dc21285_setup(int nr, struct pci_sys_data *);
 108extern void dc21285_preinit(void);
 109extern void dc21285_postinit(void);
 110
 111#endif /* __ASM_MACH_PCI_H */
 112