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