Messages in this thread | | | Date | Fri, 24 Jul 2015 16:27:52 +0800 | From | Hanjun Guo <> | Subject | Re: [PATCH v2 0/7] Making the generic ACPI GSI layer irqdomain aware |
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Hi Marc,
On 07/23/2015 09:05 PM, Marc Zyngier wrote: > The irqdomain code is not entierely really ACPI friendly, as it has > some built-in knowledge of the device-tree. Nothing too harmful, but > enough to scare the ARM ACPI developpers which end up with their own > version of the square wheel. > > This small patch series adapt the irqdomain code to remove the hurdles > that prevent the full blown irqdomain subsystem to be used on ACPI, > creates an interface between the GSI layer and the irqdomain, and as > an example, convert the ARM GIC ACPI support to use irqdomains as > originally intended. > > Overall, this gives us a way to use irqdomains on both DT and ACPI > enabled platforms, having very little changes made to the actual > drivers (other than the probing infrastructure). Because we keep the > flow of information between the various layers identical between ACPI > and DT, we immediately benefit from the existing infrastructure. > > I'd really like to hear what people think of that approach, as it > looks to me a lot simpler than the other approaches currently put on > the list. The "convert the GSI information to be DT friendly" is > admitedly not very pretty, but I see it as a stepping stone towards > unifying the two structures. > > This has been test-booted on Juno, is based on my irq/ncpi-msi-v3 > branch, and available at: > > git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git irq/gsi-irq-domain-v2
Pulled and rebased my self-probing and GICv3 ACPI support patches on top of it, tested on FVP and QEMU, booted OK, for this patch set,
Tested-by: Hanjun Guo <hanjun.guo@linaro.org>
I will sync with Suravee to prepare a single patch for ACPI self-probing, GICv2m and GICv3 support.
Thank you for putting thing together! Hanjun
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