On Tue, 4 Nov 2014, Suravee Suthikulpanit wrote: > And that's what I am trying to do here except that GIC is expecting that > information to be passed to it via irq_domain_alloc_irqs(..., args) where args > is struct of_phandle_args (e.g. in the kernel/irqdomain.c: > irq_create_of_mapping). This works fine when specifying interrupt from DT, but > that is not always the case. > > Currently, I can just create a fake of_phandle_args just to pass the hwirq > information to GIC. > > --> gicv2m_setup_msi_irq() > | struct of_phandle_args phan; > | phan.np = NULL; > | phan.args_count = 3; > | phan.args[0] = 0; > | phan.args[1] = hwirq - 32; > | phan.args[2] = IRQ_TYPE_EDGE_RISING; > |--> irq_domain_alloc_irqs(d, 1, NUMA_NO_NODE, &phan); > |--> gicv2m_domain_alloc(d, virq, nr_irqs, arg) > |--> irq_domain_alloc_irqs_parent(d, virq, nr_irqs, arg); > > I am trying to figure out what would be a common data structure for this > purpose that would work for both Dt and non-DT case (e.g. GICv2m MSI). Unless > you think this is ok. You need to sort that out with Marc. It needs to be done in a way which is usable for the other potential use cases of stacked domains on top of GIC. Thanks, tglx -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
