[PATCH 19/41] bsps/irq: Implement new directives for GICv2/3

Sebastian Huber sebastian.huber at embedded-brains.de
Wed Jul 21 18:28:30 UTC 2021


On 21/07/2021 20:25, Gedare Bloom wrote:
>>>>> As far as I'm aware, SGIs can be enabled or disabled using GICD_ISENABLER0
>>>>> just like
>>>>>
>>>>> PPI or SPI interrupts for both GICv2 and GICv3. Section 3.1.2 of the GICv2
>>>>> architecture
>>>>>
>>>>> spec (IHI0048B) references this, though I have seen implementations where
>>>>> certain SGI
>>>>>
>>>>> and PPI interrupts are hard-wired enabled or disabled and that state can't be
>>>>> changed
>>>>>
>>>>> (which is also covered in this section).
>>>> Ok, on Qemu and the i.MX7D the SGI are always enabled. I would keep the
>>>> attributes like this until we have a system which is different.
>> Should a comment be added that says this?
>>
> Yes, in case someone else comes along to add support for a system that
> is different, it will help to give them some pointers.

I addressed this with new attributes in the v2 patch versions:

https://lists.rtems.org/pipermail/devel/2021-July/068276.html


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