NAME
ioremap − map bus memory into CPU space
SYNOPSIS
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void __iomem * ioremap(unsigned long offset, unsigned long size); |
ARGUMENTS
offset
bus address of the memory
size
size of the resource to map
DESCRIPTION
ioremap performs a platform specific sequence of operations to make bus memory CPU accessible via the readb/readw/readl/writeb/ writew/writel functions and the other mmio helpers. The returned address is not guaranteed to be usable directly as a virtual address.
AUTHORS
Matthew Wilcox <matthew [AT] wil.cx>
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Author. |
Alan Cox <alan [AT] redhat.com>
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Author. |