On 2015/3/25 1:58, Lorenzo Pieralisi wrote: > The code deployed to implement GSI linux IRQ numbers mapping on arm64 turns > out to be generic enough so that it can be moved to ACPI core code along > with its respective config option ACPI_GENERIC_GSI selectable on > architectures that can reuse the same code. > > Current ACPI IRQ mapping code is not integrated in the kernel IRQ domain > infrastructure, in particular there is no way to look-up the > IRQ domain associated with a particular interrupt controller, so this > first version of GSI generic code carries out the GSI<->IRQ mapping relying > on the IRQ default domain which is supposed to be always set on a > specific architecture in case the domain structure passed to > irq_create/find_mapping() functions is missing. > > This patch moves the arm64 acpi functions that implement the gsi mappings: > > acpi_gsi_to_irq() > acpi_register_gsi() > acpi_unregister_gsi() > > to ACPI core code. Since the generic GSI<->domain mapping is based on IRQ > domains, it can be extended as soon as a way to map an interrupt > controller to an IRQ domain is implemented for ACPI in the IRQ domain > layer. > > x86 and ia64 code for GSI mappings cannot rely on the generic GSI > layer at present for legacy reasons, so they do not select the > ACPI_GENERIC_GSI config options and keep relying on their arch > specific GSI mapping layer. > > Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@xxxxxxx> > Cc: Will Deacon <will.deacon@xxxxxxx> > Cc: Hanjun Guo <hanjun.guo@xxxxxxxxxx> > Cc: Jiang Liu <jiang.liu@xxxxxxxxxxxxxxx> > Cc: Catalin Marinas <catalin.marinas@xxxxxxx> > Cc: Rafael J. Wysocki <rjw@xxxxxxxxxxxxx> > Cc: Marc Zyngier <marc.zyngier@xxxxxxx> > --- Acked-by: Hanjun Guo <hanjun.guo@xxxxxxxxxx> Thanks Hanjun -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
