From fc00c656c96528112d05cf0edf8631bd5eaea446 Mon Sep 17 00:00:00 2001 From: Kacper Date: Sun, 7 Dec 2025 20:10:31 +0100 Subject: Add build system scaffolding and libc headers --- include/arch/x86_64/linux/pci.h | 46 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 include/arch/x86_64/linux/pci.h (limited to 'include/arch/x86_64/linux/pci.h') diff --git a/include/arch/x86_64/linux/pci.h b/include/arch/x86_64/linux/pci.h new file mode 100644 index 00000000..730c8643 --- /dev/null +++ b/include/arch/x86_64/linux/pci.h @@ -0,0 +1,46 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +/* + * pci.h + * + * PCI defines and function prototypes + * Copyright 1994, Drew Eckhardt + * Copyright 1997--1999 Martin Mares + * + * For more information, please consult the following manuals (look at + * http://www.pcisig.com/ for how to get them): + * + * PCI BIOS Specification + * PCI Local Bus Specification + * PCI to PCI Bridge Specification + * PCI System Design Guide + */ + +#ifndef LINUX_PCI_H +#define LINUX_PCI_H + +#include /* The pci register defines */ + +/* + * The PCI interface treats multi-function devices as independent + * devices. The slot/function address of each device is encoded + * in a single byte as follows: + * + * 7:3 = slot + * 2:0 = function + */ +#define PCI_DEVFN(slot, func) ((((slot) & 0x1f) << 3) | ((func) & 0x07)) +#define PCI_SLOT(devfn) (((devfn) >> 3) & 0x1f) +#define PCI_FUNC(devfn) ((devfn) & 0x07) + +/* Ioctls for /proc/bus/pci/X/Y nodes. */ +#define PCIIOC_BASE ('P' << 24 | 'C' << 16 | 'I' << 8) +#define PCIIOC_CONTROLLER \ + (PCIIOC_BASE | 0x00) /* Get controller for PCI device. */ +#define PCIIOC_MMAP_IS_IO \ + (PCIIOC_BASE | 0x01) /* Set mmap state to I/O space. */ +#define PCIIOC_MMAP_IS_MEM \ + (PCIIOC_BASE | 0x02) /* Set mmap state to MEM space. */ +#define PCIIOC_WRITE_COMBINE \ + (PCIIOC_BASE | 0x03) /* Enable/disable write-combining. */ + +#endif /* LINUX_PCI_H */ -- cgit v1.2.3