From: "Moore, Robert" <robert.moore@intel.com>
To: Sudeep Holla <sudeep.holla@arm.com>, hotran <hotran@apm.com>
CC: Jassi Brar <jassisinghbrar@gmail.com>,
        "Rafael J. Wysocki" <rjw@rjwysocki.net>, Len Brown <lenb@kernel.org>,
        "Zheng, Lv" <lv.zheng@intel.com>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "linux-acpi@vger.kernel.org" <linux-acpi@vger.kernel.org>,
        "devel@acpica.org" <devel@acpica.org>, "lho@apm.com" <lho@apm.com>,
        "dhdang@apm.com" <dhdang@apm.com>
Subject: RE: [PATCH] mailbox: pcc: Support HW-Reduced Communication Subspace
 Type 2
Thread-Topic: [PATCH] mailbox: pcc: Support HW-Reduced Communication
 Subspace Type 2
Thread-Index: AQHRj4iQCXjTFFljzk+QYB63z00E3Z+AgtYA///5AhA=
Date: Fri, 8 Apr 2016 19:33:20 +0000
Message-ID: <94F2FBAB4432B54E8AACC7DFDE6C92E37E46B37E@ORSMSX108.amr.corp.intel.com>
References: <1459894447-15400-1-git-send-email-hotran@apm.com>
 <5707AAD8.9070306@arm.com>
In-Reply-To: <5707AAD8.9070306@arm.com>
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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