1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0+ */
2*4882a593Smuzhiyun /* Generic I/O port emulation.
3*4882a593Smuzhiyun *
4*4882a593Smuzhiyun * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
5*4882a593Smuzhiyun * Written by David Howells (dhowells@redhat.com)
6*4882a593Smuzhiyun */
7*4882a593Smuzhiyun #ifndef __ASM_GENERIC_PCI_IOMAP_H
8*4882a593Smuzhiyun #define __ASM_GENERIC_PCI_IOMAP_H
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun struct pci_dev;
11*4882a593Smuzhiyun #ifdef CONFIG_PCI
12*4882a593Smuzhiyun /* Create a virtual mapping cookie for a PCI BAR (memory or IO) */
13*4882a593Smuzhiyun extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max);
14*4882a593Smuzhiyun extern void __iomem *pci_iomap_wc(struct pci_dev *dev, int bar, unsigned long max);
15*4882a593Smuzhiyun extern void __iomem *pci_iomap_range(struct pci_dev *dev, int bar,
16*4882a593Smuzhiyun unsigned long offset,
17*4882a593Smuzhiyun unsigned long maxlen);
18*4882a593Smuzhiyun extern void __iomem *pci_iomap_wc_range(struct pci_dev *dev, int bar,
19*4882a593Smuzhiyun unsigned long offset,
20*4882a593Smuzhiyun unsigned long maxlen);
21*4882a593Smuzhiyun /* Create a virtual mapping cookie for a port on a given PCI device.
22*4882a593Smuzhiyun * Do not call this directly, it exists to make it easier for architectures
23*4882a593Smuzhiyun * to override */
24*4882a593Smuzhiyun #ifdef CONFIG_NO_GENERIC_PCI_IOPORT_MAP
25*4882a593Smuzhiyun extern void __iomem *__pci_ioport_map(struct pci_dev *dev, unsigned long port,
26*4882a593Smuzhiyun unsigned int nr);
27*4882a593Smuzhiyun #else
28*4882a593Smuzhiyun #define __pci_ioport_map(dev, port, nr) ioport_map((port), (nr))
29*4882a593Smuzhiyun #endif
30*4882a593Smuzhiyun
31*4882a593Smuzhiyun #elif defined(CONFIG_GENERIC_PCI_IOMAP)
pci_iomap(struct pci_dev * dev,int bar,unsigned long max)32*4882a593Smuzhiyun static inline void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max)
33*4882a593Smuzhiyun {
34*4882a593Smuzhiyun return NULL;
35*4882a593Smuzhiyun }
36*4882a593Smuzhiyun
pci_iomap_wc(struct pci_dev * dev,int bar,unsigned long max)37*4882a593Smuzhiyun static inline void __iomem *pci_iomap_wc(struct pci_dev *dev, int bar, unsigned long max)
38*4882a593Smuzhiyun {
39*4882a593Smuzhiyun return NULL;
40*4882a593Smuzhiyun }
pci_iomap_range(struct pci_dev * dev,int bar,unsigned long offset,unsigned long maxlen)41*4882a593Smuzhiyun static inline void __iomem *pci_iomap_range(struct pci_dev *dev, int bar,
42*4882a593Smuzhiyun unsigned long offset,
43*4882a593Smuzhiyun unsigned long maxlen)
44*4882a593Smuzhiyun {
45*4882a593Smuzhiyun return NULL;
46*4882a593Smuzhiyun }
pci_iomap_wc_range(struct pci_dev * dev,int bar,unsigned long offset,unsigned long maxlen)47*4882a593Smuzhiyun static inline void __iomem *pci_iomap_wc_range(struct pci_dev *dev, int bar,
48*4882a593Smuzhiyun unsigned long offset,
49*4882a593Smuzhiyun unsigned long maxlen)
50*4882a593Smuzhiyun {
51*4882a593Smuzhiyun return NULL;
52*4882a593Smuzhiyun }
53*4882a593Smuzhiyun #endif
54*4882a593Smuzhiyun
55*4882a593Smuzhiyun #endif /* __ASM_GENERIC_IO_H */
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