mirror of https://gitee.com/openkylin/linux.git
55 lines
1.2 KiB
C
55 lines
1.2 KiB
C
/*
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* arch/sh64/lib/iomap.c
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*
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* Generic sh64 iomap interface
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*
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* Copyright (C) 2004 Paul Mundt
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*/
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#include <linux/pci.h>
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#include <asm/io.h>
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void __iomem *__attribute__ ((weak))
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ioport_map(unsigned long port, unsigned int len)
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{
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return (void __iomem *)port;
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}
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EXPORT_SYMBOL(ioport_map);
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void ioport_unmap(void __iomem *addr)
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{
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/* Nothing .. */
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}
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EXPORT_SYMBOL(ioport_unmap);
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#ifdef CONFIG_PCI
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void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long max)
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{
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unsigned long start = pci_resource_start(dev, bar);
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unsigned long len = pci_resource_len(dev, bar);
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unsigned long flags = pci_resource_flags(dev, bar);
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if (!len)
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return NULL;
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if (max && len > max)
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len = max;
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if (flags & IORESOURCE_IO)
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return ioport_map(start + pciio_virt, len);
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if (flags & IORESOURCE_MEM)
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return (void __iomem *)start;
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/* What? */
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return NULL;
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}
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EXPORT_SYMBOL(pci_iomap);
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void pci_iounmap(struct pci_dev *dev, void __iomem *addr)
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{
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/* Nothing .. */
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}
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EXPORT_SYMBOL(pci_iounmap);
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#endif
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