On Wed, 5 Mar 2014 11:48:52 +0000, Liviu Dudau <Liviu.Dudau@xxxxxxx> wrote: > Some architectures do not share x86 simple view of the I/O space and > instead use a range of addresses that map to external devices. For PCI, > these ranges can be expressed by OF bindings in a device tree file. > > Introduce a pci_register_io_range() helper function that can be used > by the architecture code to keep track of the io ranges described by the > PCI bindings. > > Signed-off-by: Liviu Dudau <Liviu.Dudau@xxxxxxx> > Tested-by: Tanmay Inamdar <tinamdar@xxxxxxx> Acked-by: Grant Likely <grant.likely@xxxxxxxxxx> > --- > drivers/of/address.c | 5 +++++ > include/linux/of_address.h | 1 + > 2 files changed, 6 insertions(+) > > diff --git a/drivers/of/address.c b/drivers/of/address.c > index 1a54f1f..d1bb30f 100644 > --- a/drivers/of/address.c > +++ b/drivers/of/address.c > @@ -619,6 +619,11 @@ const __be32 *of_get_address(struct device_node *dev, int index, u64 *size, > } > EXPORT_SYMBOL(of_get_address); > > +int __weak pci_register_io_range(phys_addr_t addr, resource_size_t size) > +{ > + return 0; > +} > + > unsigned long __weak pci_address_to_pio(phys_addr_t address) > { > if (address > IO_SPACE_LIMIT) > diff --git a/include/linux/of_address.h b/include/linux/of_address.h > index 5f6ed6b..40c418d 100644 > --- a/include/linux/of_address.h > +++ b/include/linux/of_address.h > @@ -56,6 +56,7 @@ extern void __iomem *of_iomap(struct device_node *device, int index); > extern const __be32 *of_get_address(struct device_node *dev, int index, > u64 *size, unsigned int *flags); > > +extern int pci_register_io_range(phys_addr_t addr, resource_size_t size); > extern unsigned long pci_address_to_pio(phys_addr_t addr); > > extern int of_pci_range_parser_init(struct of_pci_range_parser *parser, > -- > 1.9.0 > > > _______________________________________________ > linaro-kernel mailing list > linaro-kernel@xxxxxxxxxxxxxxxx > http://lists.linaro.org/mailman/listinfo/linaro-kernel -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html