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42 lines
1.4 KiB
42 lines
1.4 KiB
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
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/* |
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* pci.h |
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* |
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* PCI defines and function prototypes |
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* Copyright 1994, Drew Eckhardt |
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* Copyright 1997--1999 Martin Mares <[email protected]> |
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* |
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* For more information, please consult the following manuals (look at |
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* http://www.pcisig.com/ for how to get them): |
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* |
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* PCI BIOS Specification |
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* PCI Local Bus Specification |
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* PCI to PCI Bridge Specification |
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* PCI System Design Guide |
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*/ |
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#ifndef _UAPILINUX_PCI_H |
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#define _UAPILINUX_PCI_H |
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#include <linux/pci_regs.h> /* The pci register defines */ |
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/* |
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* The PCI interface treats multi-function devices as independent |
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* devices. The slot/function address of each device is encoded |
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* in a single byte as follows: |
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* |
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* 7:3 = slot |
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* 2:0 = function |
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*/ |
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#define PCI_DEVFN(slot, func) ((((slot) & 0x1f) << 3) | ((func) & 0x07)) |
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#define PCI_SLOT(devfn) (((devfn) >> 3) & 0x1f) |
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#define PCI_FUNC(devfn) ((devfn) & 0x07) |
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/* Ioctls for /proc/bus/pci/X/Y nodes. */ |
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#define PCIIOC_BASE ('P' << 24 | 'C' << 16 | 'I' << 8) |
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#define PCIIOC_CONTROLLER (PCIIOC_BASE | 0x00) /* Get controller for PCI device. */ |
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#define PCIIOC_MMAP_IS_IO (PCIIOC_BASE | 0x01) /* Set mmap state to I/O space. */ |
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#define PCIIOC_MMAP_IS_MEM (PCIIOC_BASE | 0x02) /* Set mmap state to MEM space. */ |
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#define PCIIOC_WRITE_COMBINE (PCIIOC_BASE | 0x03) /* Enable/disable write-combining. */ |
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#endif /* _UAPILINUX_PCI_H */
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