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/*

 *      pci.h

 *

 *      PCI defines and function prototypes

 *      Copyright 1994, Drew Eckhardt

 *      Copyright 1997--1999 Martin Mares <mj@ucw.cz>

 *

 *      For more information, please consult the following manuals (look at

 *      http://www.pcisig.com/ for how to get them):

 *

 *      PCI BIOS Specification

 *      PCI Local Bus Specification

 *      PCI to PCI Bridge Specification

 *      PCI System Design Guide

 */

#ifndef LINUX_PCI_H

#define LINUX_PCI_H

#include <linux/pci_regs.h>     /* The pci register defines */

/*

 * The PCI interface treats multi-function devices as independent

 * devices.  The slot/function address of each device is encoded

 * in a single byte as follows:

 *

 *      7:3 = slot

 *      2:0 = function

 */

#define PCI_DEVFN(slot, func)   ((((slot) & 0x1f) << 3) | ((func) & 0x07))

#define PCI_SLOT(devfn)         (((devfn) >> 3) & 0x1f)

#define PCI_FUNC(devfn)         ((devfn) & 0x07)

/* Ioctls for /proc/bus/pci/X/Y nodes. */

#define PCIIOC_BASE             ('P' << 24 | 'C' << 16 | 'I' << 8)

#define PCIIOC_CONTROLLER       (PCIIOC_BASE | 0x00)    /* Get controller for PCI device. */

#define PCIIOC_MMAP_IS_IO       (PCIIOC_BASE | 0x01)    /* Set mmap state to I/O space. */

#define PCIIOC_MMAP_IS_MEM      (PCIIOC_BASE | 0x02)    /* Set mmap state to MEM space. */

#define PCIIOC_WRITE_COMBINE    (PCIIOC_BASE | 0x03)    /* Enable/disable write-combining. */

#endif /* LINUX_PCI_H */