firmware/coreboot: Initial import via subtree merge

Signed-off-by: David Hendricks <dhendricks@fb.com>

firmware/coreboot/util/vgabios/pci-userspace.h

@@ -0,0 +1,35 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright (C) 2016 Google Inc
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef __PCI_USERSPACE_H__
+#define __PCI_USERSPACE_H__
+
+struct device {
+	int busno;
+	int slot;
+	int func;
+};
+
+int pci_initialize(void);
+int pci_exit(void);
+
+u8 pci_read_config8(struct device *dev, unsigned int where);
+u16 pci_read_config16(struct device *dev, unsigned int where);
+u32 pci_read_config32(struct device *dev, unsigned int where);
+void pci_write_config8(struct device *dev, unsigned int where, u8 val);
+void pci_write_config16(struct device *dev, unsigned int where, u16 val);
+void pci_write_config32(struct device *dev, unsigned int where, u32 val);
+
+#endif