| 1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
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| 2 | /* |
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| 3 | * pci.h |
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| 4 | * |
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| 5 | * PCI defines and function prototypes |
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| 6 | * Copyright 1994, Drew Eckhardt |
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| 7 | * Copyright 1997--1999 Martin Mares <mj@ucw.cz> |
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| 8 | * |
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| 9 | * For more information, please consult the following manuals (look at |
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| 10 | * http://www.pcisig.com/ for how to get them): |
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| 11 | * |
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| 12 | * PCI BIOS Specification |
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| 13 | * PCI Local Bus Specification |
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| 14 | * PCI to PCI Bridge Specification |
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| 15 | * PCI System Design Guide |
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| 16 | */ |
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| 17 | |
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| 18 | #ifndef _UAPILINUX_PCI_H |
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| 19 | #define _UAPILINUX_PCI_H |
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| 20 | |
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| 21 | #include <linux/pci_regs.h> /* The pci register defines */ |
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| 22 | |
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| 23 | /* |
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| 24 | * The PCI interface treats multi-function devices as independent |
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| 25 | * devices. The slot/function address of each device is encoded |
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| 26 | * in a single byte as follows: |
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| 27 | * |
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| 28 | * 7:3 = slot |
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| 29 | * 2:0 = function |
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| 30 | */ |
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| 31 | #define PCI_DEVFN(slot, func) ((((slot) & 0x1f) << 3) | ((func) & 0x07)) |
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| 32 | #define PCI_SLOT(devfn) (((devfn) >> 3) & 0x1f) |
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| 33 | #define PCI_FUNC(devfn) ((devfn) & 0x07) |
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| 34 | |
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| 35 | /* Ioctls for /proc/bus/pci/X/Y nodes. */ |
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| 36 | #define PCIIOC_BASE ('P' << 24 | 'C' << 16 | 'I' << 8) |
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| 37 | #define PCIIOC_CONTROLLER (PCIIOC_BASE | 0x00) /* Get controller for PCI device. */ |
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| 38 | #define PCIIOC_MMAP_IS_IO (PCIIOC_BASE | 0x01) /* Set mmap state to I/O space. */ |
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| 39 | #define PCIIOC_MMAP_IS_MEM (PCIIOC_BASE | 0x02) /* Set mmap state to MEM space. */ |
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| 40 | #define PCIIOC_WRITE_COMBINE (PCIIOC_BASE | 0x03) /* Enable/disable write-combining. */ |
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| 41 | |
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| 42 | #endif /* _UAPILINUX_PCI_H */ |
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| 43 | |
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