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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_H8#define __ASM_GENERIC_PCI_IOMAP_H9 10struct pci_dev;11#ifdef CONFIG_PCI12/* Create a virtual mapping cookie for a PCI BAR (memory or IO) */13extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max);14extern void __iomem *pci_iomap_wc(struct pci_dev *dev, int bar, unsigned long max);15extern void __iomem *pci_iomap_range(struct pci_dev *dev, int bar,16 unsigned long offset,17 unsigned long maxlen);18extern void __iomem *pci_iomap_wc_range(struct pci_dev *dev, int bar,19 unsigned long offset,20 unsigned long maxlen);21extern 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 architectures24 * to override */25#ifdef CONFIG_NO_GENERIC_PCI_IOPORT_MAP26extern void __iomem *__pci_ioport_map(struct pci_dev *dev, unsigned long port,27 unsigned int nr);28#elif !defined(CONFIG_HAS_IOPORT_MAP)29#define __pci_ioport_map(dev, port, nr) NULL30#else31#define __pci_ioport_map(dev, port, nr) ioport_map((port), (nr))32#endif33 34#elif defined(CONFIG_GENERIC_PCI_IOMAP)35static inline void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max)36{37 return NULL;38}39 40static inline void __iomem *pci_iomap_wc(struct pci_dev *dev, int bar, unsigned long max)41{42 return NULL;43}44static inline void __iomem *pci_iomap_range(struct pci_dev *dev, int bar,45 unsigned long offset,46 unsigned long maxlen)47{48 return NULL;49}50static inline void __iomem *pci_iomap_wc_range(struct pci_dev *dev, int bar,51 unsigned long offset,52 unsigned long maxlen)53{54 return NULL;55}56static inline void pci_iounmap(struct pci_dev *dev, void __iomem *addr)57{ }58#endif59 60#endif /* __ASM_GENERIC_PCI_IOMAP_H */61