1 /* Generic I/O port emulation, based on MN10300 code 2 * 3 * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved. 4 * Written by David Howells (dhowells@redhat.com) 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public Licence 8 * as published by the Free Software Foundation; either version 9 * 2 of the Licence, or (at your option) any later version. 10 */ 11 #ifndef __ASM_GENERIC_PCI_IOMAP_H 12 #define __ASM_GENERIC_PCI_IOMAP_H 13 14 struct pci_dev; 15 #ifdef CONFIG_PCI 16 /* Create a virtual mapping cookie for a PCI BAR (memory or IO) */ 17 extern void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max); 18 extern void __iomem *pci_iomap_wc(struct pci_dev *dev, int bar, unsigned long max); 19 extern void __iomem *pci_iomap_range(struct pci_dev *dev, int bar, 20 unsigned long offset, 21 unsigned long maxlen); 22 extern void __iomem *pci_iomap_wc_range(struct pci_dev *dev, int bar, 23 unsigned long offset, 24 unsigned long maxlen); 25 /* Create a virtual mapping cookie for a port on a given PCI device. 26 * Do not call this directly, it exists to make it easier for architectures 27 * to override */ 28 #ifdef CONFIG_NO_GENERIC_PCI_IOPORT_MAP 29 extern void __iomem *__pci_ioport_map(struct pci_dev *dev, unsigned long port, 30 unsigned int nr); 31 #else 32 #define __pci_ioport_map(dev, port, nr) ioport_map((port), (nr)) 33 #endif 34 35 #elif defined(CONFIG_GENERIC_PCI_IOMAP) 36 static inline void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max) 37 { 38 return NULL; 39 } 40 41 static inline void __iomem *pci_iomap_wc(struct pci_dev *dev, int bar, unsigned long max) 42 { 43 return NULL; 44 } 45 static inline void __iomem *pci_iomap_range(struct pci_dev *dev, int bar, 46 unsigned long offset, 47 unsigned long maxlen) 48 { 49 return NULL; 50 } 51 static inline void __iomem *pci_iomap_wc_range(struct pci_dev *dev, int bar, 52 unsigned long offset, 53 unsigned long maxlen) 54 { 55 return NULL; 56 } 57 #endif 58 59 #endif /* __ASM_GENERIC_IO_H */ 60