1/* 2 * pci.h 3 * 4 * PCI defines and function prototypes 5 * Copyright 1994, Drew Eckhardt 6 * Copyright 1997--1999 Martin Mares <mj@ucw.cz> 7 * 8 * For more information, please consult the following manuals (look at 9 * http://www.pcisig.com/ for how to get them): 10 * 11 * PCI BIOS Specification 12 * PCI Local Bus Specification 13 * PCI to PCI Bridge Specification 14 * PCI System Design Guide 15 */ 16 17#ifndef LINUX_PCI_H 18#define LINUX_PCI_H 19 20/* Include the pci register defines */ 21#include <linux/pci_regs.h> 22 23/* 24 * The PCI interface treats multi-function devices as independent 25 * devices. The slot/function address of each device is encoded 26 * in a single byte as follows: 27 * 28 * 7:3 = slot 29 * 2:0 = function 30 */ 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 /* LINUX_PCI_H */ 43