43 lines · c
1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */2/*3 * pci.h4 *5 * PCI defines and function prototypes6 * Copyright 1994, Drew Eckhardt7 * Copyright 1997--1999 Martin Mares <mj@ucw.cz>8 *9 * For more information, please consult the following manuals (look at10 * http://www.pcisig.com/ for how to get them):11 *12 * PCI BIOS Specification13 * PCI Local Bus Specification14 * PCI to PCI Bridge Specification15 * PCI System Design Guide16 */17 18#ifndef _UAPILINUX_PCI_H19#define _UAPILINUX_PCI_H20 21#include <linux/pci_regs.h> /* The pci register defines */22 23/*24 * The PCI interface treats multi-function devices as independent25 * devices. The slot/function address of each device is encoded26 * in a single byte as follows:27 *28 * 7:3 = slot29 * 2:0 = function30 */31#define PCI_DEVFN(slot, func) ((((slot) & 0x1f) << 3) | ((func) & 0x07))32#define PCI_SLOT(devfn) (((devfn) >> 3) & 0x1f)33#define PCI_FUNC(devfn) ((devfn) & 0x07)34 35/* Ioctls for /proc/bus/pci/X/Y nodes. */36#define PCIIOC_BASE ('P' << 24 | 'C' << 16 | 'I' << 8)37#define PCIIOC_CONTROLLER (PCIIOC_BASE | 0x00) /* Get controller for PCI device. */38#define PCIIOC_MMAP_IS_IO (PCIIOC_BASE | 0x01) /* Set mmap state to I/O space. */39#define PCIIOC_MMAP_IS_MEM (PCIIOC_BASE | 0x02) /* Set mmap state to MEM space. */40#define PCIIOC_WRITE_COMBINE (PCIIOC_BASE | 0x03) /* Enable/disable write-combining. */41 42#endif /* _UAPILINUX_PCI_H */43