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01: /*
02:  *      pci.h
03:  *
04:  *      PCI defines and function prototypes
05:  *      Copyright 1994, Drew Eckhardt
06:  *      Copyright 1997--1999 Martin Mares <mj@ucw.cz>
07:  *
08:  *      For more information, please consult the following manuals (look at
09:  *      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: 

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