diff options
author | David S. Miller <davem@sunset.davemloft.net> | 2006-06-25 23:24:24 -0700 |
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committer | David S. Miller <davem@sunset.davemloft.net> | 2006-06-25 23:24:24 -0700 |
commit | 749805dc10e955b0170573061f9522a6a21cbae0 (patch) | |
tree | 610f0a5f10564e4627349d4518f99e98ddf39467 /arch/sparc/lib/iomap.c | |
parent | 8e48aec714f1faf581949f23ae0e3d6e2317433b (diff) |
[SPARC]: Add iomap interfaces.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/lib/iomap.c')
-rw-r--r-- | arch/sparc/lib/iomap.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/arch/sparc/lib/iomap.c b/arch/sparc/lib/iomap.c new file mode 100644 index 000000000000..54501c1ca785 --- /dev/null +++ b/arch/sparc/lib/iomap.c @@ -0,0 +1,48 @@ +/* + * Implement the sparc iomap interfaces + */ +#include <linux/pci.h> +#include <linux/module.h> +#include <asm/io.h> + +/* Create a virtual mapping cookie for an IO port range */ +void __iomem *ioport_map(unsigned long port, unsigned int nr) +{ + return (void __iomem *) (unsigned long) port; +} + +void ioport_unmap(void __iomem *addr) +{ + /* Nothing to do */ +} +EXPORT_SYMBOL(ioport_map); +EXPORT_SYMBOL(ioport_unmap); + +/* Create a virtual mapping cookie for a PCI BAR (memory or IO) */ +void __iomem *pci_iomap(struct pci_dev *dev, int bar, unsigned long maxlen) +{ + unsigned long start = pci_resource_start(dev, bar); + unsigned long len = pci_resource_len(dev, bar); + unsigned long flags = pci_resource_flags(dev, bar); + + if (!len || !start) + return NULL; + if (maxlen && len > maxlen) + len = maxlen; + if (flags & IORESOURCE_IO) + return ioport_map(start, len); + if (flags & IORESOURCE_MEM) { + if (flags & IORESOURCE_CACHEABLE) + return ioremap(start, len); + return ioremap_nocache(start, len); + } + /* What? */ + return NULL; +} + +void pci_iounmap(struct pci_dev *dev, void __iomem * addr) +{ + /* nothing to do */ +} +EXPORT_SYMBOL(pci_iomap); +EXPORT_SYMBOL(pci_iounmap); |