/*
 *	The PCI Library -- Internal Include File
 *
 *	Copyright (c) 1997--2004 Martin Mares <mj@ucw.cz>
 *
 *	Can be freely distributed and used under the terms of the GNU GPL.
 */

#include "pci.h"

#ifdef __GNUC__
#define UNUSED __attribute__((unused))
#else
#define UNUSED
#define inline
#endif

#ifdef HAVE_LINUX_BYTEORDER_H

#include <asm/byteorder.h>
#define cpu_to_le16 __cpu_to_le16
#define cpu_to_le32 __cpu_to_le32
#define le16_to_cpu __le16_to_cpu
#define le32_to_cpu __le32_to_cpu

#else

#ifdef OS_LINUX
#include <endian.h>
#define BYTE_ORDER __BYTE_ORDER
#define BIG_ENDIAN __BIG_ENDIAN
#endif

#ifdef OS_FREEBSD
#include <sys/types.h>
#endif

#ifdef OS_SUNOS
#include <sys/byteorder.h>
#define BIG_ENDIAN 4321
#ifdef _LITTLE_ENDIAN
#define BYTE_ORDER 1234
#else
#define BYTE_ORDER 4321
#endif
#endif

#ifdef OS_WINDOWS
#include <sys/param.h>
#endif

#if BYTE_ORDER == BIG_ENDIAN
#define cpu_to_le16 swab16
#define cpu_to_le32 swab32
#define le16_to_cpu swab16
#define le32_to_cpu swab32

static inline word swab16(word w)
{
  return (w << 8) | ((w >> 8) & 0xff);
}

static inline u32 swab32(u32 w)
{
  return ((w & 0xff000000) >> 24) |
         ((w & 0x00ff0000) >> 8) |
         ((w & 0x0000ff00) << 8)  |
         ((w & 0x000000ff) << 24);
}
#else
#define cpu_to_le16(x) (x)
#define cpu_to_le32(x) (x)
#define le16_to_cpu(x) (x)
#define le32_to_cpu(x) (x)
#endif

#endif

struct pci_methods {
  char *name;
  void (*config)(struct pci_access *);
  int (*detect)(struct pci_access *);
  void (*init)(struct pci_access *);
  void (*cleanup)(struct pci_access *);
  void (*scan)(struct pci_access *);
  int (*fill_info)(struct pci_dev *, int flags);
  int (*read)(struct pci_dev *, int pos, byte *buf, int len);
  int (*write)(struct pci_dev *, int pos, byte *buf, int len);
  void (*init_dev)(struct pci_dev *);
  void (*cleanup_dev)(struct pci_dev *);
};

void pci_generic_scan_bus(struct pci_access *, byte *busmap, int bus);
void pci_generic_scan(struct pci_access *);
int pci_generic_fill_info(struct pci_dev *, int flags);
int pci_generic_block_read(struct pci_dev *, int pos, byte *buf, int len);
int pci_generic_block_write(struct pci_dev *, int pos, byte *buf, int len);

void *pci_malloc(struct pci_access *, int);
void pci_mfree(void *);

struct pci_dev *pci_alloc_dev(struct pci_access *);
int pci_link_dev(struct pci_access *, struct pci_dev *);

extern struct pci_methods pm_intel_conf1, pm_intel_conf2, pm_linux_proc,
  pm_fbsd_device, pm_aix_device, pm_nbsd_libpci, pm_dump, pm_linux_sysfs;
