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authorCatalin Marinas <catalin.marinas@arm.com>2014-09-29 10:29:26 -0400
committerBjorn Helgaas <bhelgaas@google.com>2014-09-30 19:08:57 -0400
commit670ba0c8883b576d0aec28bd7a838358a4be1406 (patch)
treefd0b13325b9c832f5d56a969d154d5d4a235b6c2 /drivers/spmi
parent0b0b0893d49b34201a6c4416b1a707b580b91e3d (diff)
PCI: Add generic domain handling
The handling of PCI domains (or PCI segments in ACPI speak) is usually a straightforward affair but its implementation is currently left to the architectural code, with pci_domain_nr(b) querying the value of the domain associated with bus b. This patch introduces CONFIG_PCI_DOMAINS_GENERIC as an option that can be selected if an architecture wants a simple implementation where the value of the domain associated with a bus is stored in struct pci_bus. The architectures that select CONFIG_PCI_DOMAINS_GENERIC will then have to implement pci_bus_assign_domain_nr() as a way of setting the domain number associated with a root bus. All child buses except the root bus will inherit the domain_nr value from their parent. Signed-off-by: Catalin Marinas <Catalin.Marinas@arm.com> [Renamed pci_set_domain_nr() to pci_bus_assign_domain_nr()] Signed-off-by: Liviu Dudau <Liviu.Dudau@arm.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> CC: Arnd Bergmann <arnd@arndb.de>
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