Bus-Independent Device Accesses
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ioremap

Name

ioremap -- map bus memory into CPU space

Synopsis

void * 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.

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