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