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pci_iomap.h
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1 /* Generic I/O port emulation, based on MN10300 code
2  *
3  * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
4  * Written by David Howells ([email protected])
5  *
6  * This program is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU General Public Licence
8  * as published by the Free Software Foundation; either version
9  * 2 of the Licence, or (at your option) any later version.
10  */
11 #ifndef __ASM_GENERIC_PCI_IOMAP_H
12 #define __ASM_GENERIC_PCI_IOMAP_H
13 
14 struct pci_dev;
15 #ifdef CONFIG_PCI
16 /* Create a virtual mapping cookie for a PCI BAR (memory or IO) */
17 extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max);
18 /* Create a virtual mapping cookie for a port on a given PCI device.
19  * Do not call this directly, it exists to make it easier for architectures
20  * to override */
21 #ifdef CONFIG_NO_GENERIC_PCI_IOPORT_MAP
22 extern void __iomem *__pci_ioport_map(struct pci_dev *dev, unsigned long port,
23  unsigned int nr);
24 #else
25 #define __pci_ioport_map(dev, port, nr) ioport_map((port), (nr))
26 #endif
27 
28 #elif defined(CONFIG_GENERIC_PCI_IOMAP)
29 static inline void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max)
30 {
31  return NULL;
32 }
33 #endif
34 
35 #endif /* __ASM_GENERIC_IO_H */