/* SPDX-License-Identifier: GPL-2.0-only */
/*
 *  arch/arm/include/asm/mach/pci.h
 *
 *  Copyright (C) 2000 Russell King
 */

#ifndef __ASM_MACH_PCI_H
#define __ASM_MACH_PCI_H

#include <linux/ioport.h>

struct pci_sys_data;
struct pci_ops;
struct pci_bus;
struct pci_host_bridge;
struct device;

struct hw_pci {
        struct pci_ops  *ops;
        int             nr_controllers;
        void            **private_data;
        int             (*setup)(int nr, struct pci_sys_data *);
        int             (*scan)(int nr, struct pci_host_bridge *);
        void            (*preinit)(void);
        void            (*postinit)(void);
        u8              (*swizzle)(struct pci_dev *dev, u8 *pin);
        int             (*map_irq)(const struct pci_dev *dev, u8 slot, u8 pin);
};

/*
 * Per-controller structure
 */
struct pci_sys_data {
        struct list_head node;
        int             busnr;          /* primary bus number                   */
        u64             mem_offset;     /* bus->cpu memory mapping offset       */
        unsigned long   io_offset;      /* bus->cpu IO mapping offset           */
        struct pci_bus  *bus;           /* PCI bus                              */
        struct list_head resources;     /* root bus resources (apertures)       */
        struct resource io_res;
        char            io_res_name[12];
                                        /* Bridge swizzling                     */
        u8              (*swizzle)(struct pci_dev *, u8 *);
                                        /* IRQ mapping                          */
        int             (*map_irq)(const struct pci_dev *, u8, u8);
        void            *private_data;  /* platform controller private data     */
};

/*
 * Call this with your hw_pci struct to initialise the PCI system.
 */
void pci_common_init_dev(struct device *, struct hw_pci *);

/*
 * Compatibility wrapper for older platforms that do not care about
 * passing the parent device.
 */
static inline void pci_common_init(struct hw_pci *hw)
{
        pci_common_init_dev(NULL, hw);
}

/*
 * Setup early fixed I/O mapping.
 */
#if defined(CONFIG_PCI)
extern void pci_map_io_early(unsigned long pfn);
#else
static inline void pci_map_io_early(unsigned long pfn) {}
#endif

/*
 * PCI controllers
 */
extern struct pci_ops iop3xx_ops;
extern int iop3xx_pci_setup(int nr, struct pci_sys_data *);
extern void iop3xx_pci_preinit(void);
extern void iop3xx_pci_preinit_cond(void);

extern struct pci_ops dc21285_ops;
extern int dc21285_setup(int nr, struct pci_sys_data *);
extern void dc21285_preinit(void);
extern void dc21285_postinit(void);

#endif /* __ASM_MACH_PCI_H */