#ifndef PCIACCESS_H
#define PCIACCESS_H

#include <stdint.h>
#include <stddef.h>

#ifdef __cplusplus
extern "C" {
#endif

typedef uint64_t pciaddr_t;

#define PCIREGION_TYPE_MEMORY 1
#define PCIREGION_TYPE_IO 2

struct pci_device_region {
    int type;
    pciaddr_t bus_addr;
    pciaddr_t base_addr;
    pciaddr_t size;
    int is_IO;
    int is_prefetchable;
    int is_64;
};

struct pci_device {
    unsigned int domain;
    unsigned int bus;
    unsigned int dev;
    unsigned int func;
    unsigned int vendor_id;
    unsigned int device_id;
    unsigned int revision;
    unsigned int class_code;
    unsigned int subclass;
    unsigned int prog_if;
    struct pci_device_region regions[6];
    void *_internal;
};

int pci_system_init(void);
void pci_system_cleanup(void);

struct pci_device *pci_device_find_by_slot(unsigned int domain,
                                             unsigned int bus,
                                             unsigned int dev,
                                             unsigned int func);
int pci_device_probe(struct pci_device *dev);

#ifdef __cplusplus
}
#endif

#endif