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);
21extern void pci_iounmap(struct pci_dev *dev, void __iomem *);
22/* Create a virtual mapping cookie for a port on a given PCI device.
23 * Do not call this directly, it exists to make it easier for architectures
24 * to override */
25#ifdef CONFIG_NO_GENERIC_PCI_IOPORT_MAP
26extern void __iomem *__pci_ioport_map(struct pci_dev *dev, unsigned long port,
27 unsigned int nr);
28#elif !defined(CONFIG_HAS_IOPORT_MAP)
29#define __pci_ioport_map(dev, port, nr) NULL
30#else
31#define __pci_ioport_map(dev, port, nr) ioport_map((port), (nr))
32#endif
33
34#elif defined(CONFIG_GENERIC_PCI_IOMAP)
35static inline void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max)
36{
37 return NULL;
38}
39
40static inline void __iomem *pci_iomap_wc(struct pci_dev *dev, int bar, unsigned long max)
41{
42 return NULL;
43}
44static inline void __iomem *pci_iomap_range(struct pci_dev *dev, int bar,
45 unsigned long offset,
46 unsigned long maxlen)
47{
48 return NULL;
49}
50static inline void __iomem *pci_iomap_wc_range(struct pci_dev *dev, int bar,
51 unsigned long offset,
52 unsigned long maxlen)
53{
54 return NULL;
55}
56static inline void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
57{ }
58#endif
59
60#endif /* __ASM_GENERIC_PCI_IOMAP_H */
61