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SubjectRE: [PATCH] mailbox: pcc: Support HW-Reduced Communication Subspace Type 2
Date
Please send me the patch to actbl3.h


> -----Original Message-----
> From: Sudeep Holla [mailto:sudeep.holla@arm.com]
> Sent: Friday, April 08, 2016 5:58 AM
> To: hotran
> Cc: Jassi Brar; Rafael J. Wysocki; Len Brown; Moore, Robert; Zheng, Lv;
> linux-kernel@vger.kernel.org; linux-acpi@vger.kernel.org;
> devel@acpica.org; Sudeep Holla; lho@apm.com; dhdang@apm.com
> Subject: Re: [PATCH] mailbox: pcc: Support HW-Reduced Communication
> Subspace Type 2
>
> Hi,
>
> On 05/04/16 23:14, hotran wrote:
> > ACPI 6.1 has a HW-Reduced Communication Subspace Type 2 intended for
> > use on HW-Reduce ACPI Platform, which requires read-modify-write
> > sequence to acknowledge doorbell interrupt. This patch provides the
> > implementation for the Communication Subspace Type 2.
> >
> > Signed-off-by: Hoan Tran <hotran@apm.com>
> > ---
> > drivers/mailbox/pcc.c | 384
> > +++++++++++++++++++++++++++++++++++++-------------
>
> > include/acpi/actbl3.h | 8 +-
>
> This(2nd) file is generally imported from ACPICA directly.
>
> So you need to work with acpica-devel list(you can cc Robert Moore) to get
> that alone integrated in acpica projected so that iasl tool and other
> related components also gain support for this first.
>
> If the ACPI tables are generated by UEFI, it would be good to add the
> support in tianocore project. IIRC tianocore has some PCC reference in
> Acpi60.h header.
>
> It would help if the above two are done before we start looking into Linux
> changes(pcc.c). To summarize this patch needs to be split.
>
> --
> Regards,
> Sudeep

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