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40 lines
875 B
40 lines
875 B
15 years ago
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/*
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* ppc64 "iomap" interface implementation.
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*
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* (C) Copyright 2004 Linus Torvalds
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*/
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#include <linux/init.h>
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#include <linux/pci.h>
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#include <linux/mm.h>
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#include <asm/io.h>
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#include <asm/pci-bridge.h>
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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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resource_size_t start = pci_resource_start(dev, bar);
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resource_size_t 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, len);
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if (flags & IORESOURCE_MEM)
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return ioremap(start, len);
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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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if (isa_vaddr_is_ioport(addr))
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return;
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if (pcibios_vaddr_is_ioport(addr))
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return;
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iounmap(addr);
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}
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EXPORT_SYMBOL(pci_iounmap);
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