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Current File : //usr/src/linux-headers-5.4.0-148/include/asm-generic/pci_iomap.h
/* SPDX-License-Identifier: GPL-2.0+ */
/* Generic I/O port emulation.
*
* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*/
#ifndef __ASM_GENERIC_PCI_IOMAP_H
#define __ASM_GENERIC_PCI_IOMAP_H
struct pci_dev;
#ifdef CONFIG_PCI
/* Create a virtual mapping cookie for a PCI BAR (memory or IO) */
extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max);
extern void __iomem *pci_iomap_wc(struct pci_dev *dev, int bar, unsigned long max);
extern void __iomem *pci_iomap_range(struct pci_dev *dev, int bar,
unsigned long offset,
unsigned long maxlen);
extern void __iomem *pci_iomap_wc_range(struct pci_dev *dev, int bar,
unsigned long offset,
unsigned long maxlen);
/* Create a virtual mapping cookie for a port on a given PCI device.
* Do not call this directly, it exists to make it easier for architectures
* to override */
#ifdef CONFIG_NO_GENERIC_PCI_IOPORT_MAP
extern void __iomem *__pci_ioport_map(struct pci_dev *dev, unsigned long port,
unsigned int nr);
#else
#define __pci_ioport_map(dev, port, nr) ioport_map((port), (nr))
#endif
#elif defined(CONFIG_GENERIC_PCI_IOMAP)
static inline void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max)
{
return NULL;
}
static inline void __iomem *pci_iomap_wc(struct pci_dev *dev, int bar, unsigned long max)
{
return NULL;
}
static inline void __iomem *pci_iomap_range(struct pci_dev *dev, int bar,
unsigned long offset,
unsigned long maxlen)
{
return NULL;
}
static inline void __iomem *pci_iomap_wc_range(struct pci_dev *dev, int bar,
unsigned long offset,
unsigned long maxlen)
{
return NULL;
}
#endif
#endif /* __ASM_GENERIC_IO_H */
