diff options
Diffstat (limited to 'include/asm-generic/pci_iomap.h')
| -rw-r--r-- | include/asm-generic/pci_iomap.h | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/include/asm-generic/pci_iomap.h b/include/asm-generic/pci_iomap.h new file mode 100644 index 000000000..7389c8711 --- /dev/null +++ b/include/asm-generic/pci_iomap.h @@ -0,0 +1,45 @@ +/* Generic I/O port emulation, based on MN10300 code + * + * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. + * Written by David Howells (dhowells@redhat.com) + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public Licence + * as published by the Free Software Foundation; either version + * 2 of the Licence, or (at your option) any later version. + */ +#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_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_range(struct pci_dev *dev, int bar, + unsigned long offset, + unsigned long maxlen) +{ + return NULL; +} +#endif + +#endif /* __ASM_GENERIC_IO_H */ |