ioremap_nocache (9) - Linux Man Pages

ioremap_nocache: map bus memory into CPU space

NAME

ioremap_nocache - map bus memory into CPU space

SYNOPSIS

void __iomem * ioremap_nocache(resource_size_t 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.

If the area you are trying to map is a PCI BAR you should have a look at pci_iomap.

AUTHORS

Matthew Wilcox <matthew [at] wil.cx>

Author.

Alan Cox <alan [at] lxorguk.ukuu.org.uk>

Author.

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