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

   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 *  arch/arm/include/asm/mach/pci.h
   4 *
   5 *  Copyright (C) 2000 Russell King
   6 */
   7
   8#ifndef __ASM_MACH_PCI_H
   9#define __ASM_MACH_PCI_H
  10
  11#include <linux/ioport.h>
  12
  13struct pci_sys_data;
  14struct pci_ops;
  15struct pci_bus;
  16struct pci_host_bridge;
  17struct device;
  18
  19struct hw_pci {
  20        struct pci_ops  *ops;
  21        int             nr_controllers;
  22        void            **private_data;
  23        int             (*setup)(int nr, struct pci_sys_data *);
  24        int             (*scan)(int nr, struct pci_host_bridge *);
  25        void            (*preinit)(void);
  26        void            (*postinit)(void);
  27        u8              (*swizzle)(struct pci_dev *dev, u8 *pin);
  28        int             (*map_irq)(const struct pci_dev *dev, u8 slot, u8 pin);
  29};
  30
  31/*
  32 * Per-controller structure
  33 */
  34struct pci_sys_data {
  35        struct list_head node;
  36        int             busnr;          /* primary bus number                   */
  37        u64             mem_offset;     /* bus->cpu memory mapping offset       */
  38        unsigned long   io_offset;      /* bus->cpu IO mapping offset           */
  39        struct pci_bus  *bus;           /* PCI bus                              */
  40        struct list_head resources;     /* root bus resources (apertures)       */
  41        struct resource io_res;
  42        char            io_res_name[12];
  43                                        /* Bridge swizzling                     */
  44        u8              (*swizzle)(struct pci_dev *, u8 *);
  45                                        /* IRQ mapping                          */
  46        int             (*map_irq)(const struct pci_dev *, u8, u8);
  47        void            *private_data;  /* platform controller private data     */
  48};
  49
  50/*
  51 * Call this with your hw_pci struct to initialise the PCI system.
  52 */
  53void pci_common_init_dev(struct device *, struct hw_pci *);
  54
  55/*
  56 * Compatibility wrapper for older platforms that do not care about
  57 * passing the parent device.
  58 */
  59static inline void pci_common_init(struct hw_pci *hw)
  60{
  61        pci_common_init_dev(NULL, hw);
  62}
  63
  64/*
  65 * Setup early fixed I/O mapping.
  66 */
  67#if defined(CONFIG_PCI)
  68extern void pci_map_io_early(unsigned long pfn);
  69#else
  70static inline void pci_map_io_early(unsigned long pfn) {}
  71#endif
  72
  73/*
  74 * PCI controllers
  75 */
  76extern struct pci_ops iop3xx_ops;
  77extern int iop3xx_pci_setup(int nr, struct pci_sys_data *);
  78extern void iop3xx_pci_preinit(void);
  79extern void iop3xx_pci_preinit_cond(void);
  80
  81extern struct pci_ops dc21285_ops;
  82extern int dc21285_setup(int nr, struct pci_sys_data *);
  83extern void dc21285_preinit(void);
  84extern void dc21285_postinit(void);
  85
  86#endif /* __ASM_MACH_PCI_H */
  87