Hi Feng,
On 2015-04-11 01:16, Feng Kan wrote:
Is there any plans to support ACPI for GICv2m MSI? Both this driver
and the
GICv2m seems to support OF model of discovery for msi controller.
X-Gene1
uses this driver and X-Gene2 uses GICv2m, there needs to be a way to
associate msi controller with the PCIe bus. I haven't
found a standard way of doing finding "msi-parent" for ACPI. Do you
have
any suggestion.
This is remarkably off topic! ;-)
ACPI only provides information for GICv2m and GICv3. No other interrupt
controller,
MSI widget or fairy dust provider will be supported on arm64 with ACPI.
So this driver
will be DT only.
GICv2m, being described in the ACPI spec, is growing some support. My
understanding is
that this is done by AMD (Suravee Suthikulpanit) using my
irq/msi-domain branch as a
base (I know that Suravee is looking at expanding the irqdomain
matching code to
accept a pointer to an ACPI table instead of a device node to match the
target
domain).
Hope this helps,
M.
--
Fast, cheap, reliable. Pick two.
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