1/* SPDX-License-Identifier: GPL-2.0+ */
2/* Generic I/O port emulation.
3 *
4 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
5 * Written by David Howells (dhowells@redhat.com)
6 */
7#ifndef __ASM_GENERIC_PCI_IOMAP_H
8#define __ASM_GENERIC_PCI_IOMAP_H
9
10struct pci_dev;
11#ifdef CONFIG_PCI
12/* Create a virtual mapping cookie for a PCI BAR (memory or IO) */
13extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max);
14extern void __iomem *pci_iomap_wc(struct pci_dev *dev, int bar, unsigned long max);
15extern void __iomem *pci_iomap_range(struct pci_dev *dev, int bar,
16				     unsigned long offset,
17				     unsigned long maxlen);
18extern void __iomem *pci_iomap_wc_range(struct pci_dev *dev, int bar,
19					unsigned long offset,
20					unsigned long maxlen);
21/* Create a virtual mapping cookie for a port on a given PCI device.
22 * Do not call this directly, it exists to make it easier for architectures
23 * to override */
24#ifdef CONFIG_NO_GENERIC_PCI_IOPORT_MAP
25extern void __iomem *__pci_ioport_map(struct pci_dev *dev, unsigned long port,
26				      unsigned int nr);
27#else
28#define __pci_ioport_map(dev, port, nr) ioport_map((port), (nr))
29#endif
30
31#elif defined(CONFIG_GENERIC_PCI_IOMAP)
32static inline void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max)
33{
34	return NULL;
35}
36
37static inline void __iomem *pci_iomap_wc(struct pci_dev *dev, int bar, unsigned long max)
38{
39	return NULL;
40}
41static inline void __iomem *pci_iomap_range(struct pci_dev *dev, int bar,
42					    unsigned long offset,
43					    unsigned long maxlen)
44{
45	return NULL;
46}
47static inline void __iomem *pci_iomap_wc_range(struct pci_dev *dev, int bar,
48					       unsigned long offset,
49					       unsigned long maxlen)
50{
51	return NULL;
52}
53#endif
54
55#endif /* __ASM_GENERIC_IO_H */
56