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 /* 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
25 extern 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)
pci_iomap(struct pci_dev * dev,int bar,unsigned long max)32 static inline void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max)
33 {
34 	return NULL;
35 }
36 
pci_iomap_wc(struct pci_dev * dev,int bar,unsigned long max)37 static inline void __iomem *pci_iomap_wc(struct pci_dev *dev, int bar, unsigned long max)
38 {
39 	return NULL;
40 }
pci_iomap_range(struct pci_dev * dev,int bar,unsigned long offset,unsigned long maxlen)41 static 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 }
pci_iomap_wc_range(struct pci_dev * dev,int bar,unsigned long offset,unsigned long maxlen)47 static 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