| /* 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 */ |