/*
 *        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 */