Add build system scaffolding and libc headers

1 files changed, 46 insertions, 0 deletions

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 <mj@ucw.cz>
+ *
+ *	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 <linux/pci_regs.h> /* 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 */