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 #else
29 #define __pci_ioport_map(dev, port, nr) ioport_map((port), (nr))
30 #endif
31
32 #elif defined(CONFIG_GENERIC_PCI_IOMAP)
pci_iomap(struct pci_dev * dev,int bar,unsigned long max)33 static inline void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max)
34 {
35 return NULL;
36 }
37
pci_iomap_wc(struct pci_dev * dev,int bar,unsigned long max)38 static inline void __iomem *pci_iomap_wc(struct pci_dev *dev, int bar, unsigned long max)
39 {
40 return NULL;
41 }
pci_iomap_range(struct pci_dev * dev,int bar,unsigned long offset,unsigned long maxlen)42 static inline void __iomem *pci_iomap_range(struct pci_dev *dev, int bar,
43 unsigned long offset,
44 unsigned long maxlen)
45 {
46 return NULL;
47 }
pci_iomap_wc_range(struct pci_dev * dev,int bar,unsigned long offset,unsigned long maxlen)48 static inline void __iomem *pci_iomap_wc_range(struct pci_dev *dev, int bar,
49 unsigned long offset,
50 unsigned long maxlen)
51 {
52 return NULL;
53 }
pci_iounmap(struct pci_dev * dev,void __iomem * addr)54 static inline void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
55 { }
56 #endif
57
58 #endif /* __ASM_GENERIC_PCI_IOMAP_H */
59