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 <linux/pci_regs.h> /* The pci register defines */ 21 22/* 23 * The PCI interface treats multi-function devices as independent 24 * devices. The slot/function address of each device is encoded 25 * in a single byte as follows: 26 * 27 * 7:3 = slot 28 * 2:0 = function 29 */ 30#define PCI_DEVFN(slot, func) ((((slot) & 0x1f) << 3) | ((func) & 0x07)) 31#define PCI_SLOT(devfn) (((devfn) >> 3) & 0x1f) 32#define PCI_FUNC(devfn) ((devfn) & 0x07) 33 34/* Ioctls for /proc/bus/pci/X/Y nodes. */ 35#define PCIIOC_BASE ('P' << 24 | 'C' << 16 | 'I' << 8) 36#define PCIIOC_CONTROLLER (PCIIOC_BASE | 0x00) /* Get controller for PCI device. */ 37#define PCIIOC_MMAP_IS_IO (PCIIOC_BASE | 0x01) /* Set mmap state to I/O space. */ 38#define PCIIOC_MMAP_IS_MEM (PCIIOC_BASE | 0x02) /* Set mmap state to MEM space. */ 39#define PCIIOC_WRITE_COMBINE (PCIIOC_BASE | 0x03) /* Enable/disable write-combining. */ 40 41#endif /* LINUX_PCI_H */ 42