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
10 struct pci_dev;
11 #ifdef CONFIG_PCI
12 /* Create a virtual mapping cookie for a PCI BAR (memory or IO) */
13 extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max);
14 extern void __iomem *pci_iomap_wc(struct pci_dev *dev, int bar, unsigned long max);
15 extern void __iomem *pci_iomap_range(struct pci_dev *dev, int bar,
16 unsigned long offset,
17 unsigned long maxlen);
18 extern void __iomem *pci_iomap_wc_range(struct pci_dev *dev, int bar,
19 unsigned long offset,
20 unsigned long maxlen);
21 extern 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
26 extern 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)
35 static inline void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max)
36 {
37 return NULL;
38 }
39
40 static inline void __iomem *pci_iomap_wc(struct pci_dev *dev, int bar, unsigned long max)
41 {
42 return NULL;
43 }
44 static 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 }
50 static 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 }
56 static inline void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
57 { }
58 #endif
59
60 #endif /* __ASM_GENERIC_PCI_IOMAP_H */
61
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