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of/pci: Add support for parsing PCI host bridge resources from DT

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Provide a function to parse the PCI DT ranges that can be used to create a
pci_host_bridge structure together with its associated bus.

Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com>
[make io_base parameter optional]
Signed-off-by: Robert Richter <rrichter@cavium.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Arnd Bergmann <arnd@arndb.de>
CC: Grant Likely <grant.likely@linaro.org>
CC: Rob Herring <robh+dt@kernel.org>
CC: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Liviu Dudau 2014-09-29 15:29:28 +01:00 • committed by Bjorn Helgaas
parent 41e5c0f81d
commit cbe4097f8a
2 changed files with 123 additions and 0 deletions
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6
include/linux/of_pci.h
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@ -52,6 +52,12 @@ of_get_pci_domain_nr(struct device_node *node)
}
#endif
#if defined(CONFIG_OF_ADDRESS)
int of_pci_get_host_bridge_resources(struct device_node *dev,
unsigned char busno, unsigned char bus_max,
struct list_head *resources, resource_size_t *io_base);
#endif
#if defined(CONFIG_OF) && defined(CONFIG_PCI_MSI)
int of_pci_msi_chip_add(struct msi_chip *chip);
void of_pci_msi_chip_remove(struct msi_chip *chip);