[PATCH v5 1/7] pci: Introduce pci_register_io_range() helper function.
From: Liviu Dudau <Liviu.Dudau@arm.com>
Date: 2014-03-04 15:50:43
Also in:
linux-arm-kernel, linux-pci, lkml
Subsystem:
open firmware and flattened device tree, the rest · Maintainers:
Rob Herring, Saravana Kannan, Linus Torvalds
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@arm.com>
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,
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1.9.0