linux-kernel - Re: [PATCH] acpi: update struct acpi_table

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Message-ID: <20150609151919.GA4453@jsakkine-mobl1>
Date:	Tue, 9 Jun 2015 18:19:19 +0300
From:	Jarkko Sakkinen <jarkko.sakkinen@...ux.intel.com>
To:	"Moore, Robert" <robert.moore@...el.com>
Cc:	"Zheng, Lv" <lv.zheng@...el.com>,
	"Wysocki, Rafael J" <rafael.j.wysocki@...el.com>,
	Len Brown <lenb@...nel.org>,
	"open list:ACPI COMPONENT AR..." <linux-acpi@...r.kernel.org>,
	"open list:ACPI COMPONENT AR..." <devel@...ica.org>,
	open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] acpi: update struct acpi_table_tpm2

On Tue, Jun 09, 2015 at 02:21:12PM +0000, Moore, Robert wrote:
> ACPICA usually defines any "related" data structures, just for user
> convenience.

If you want to keep it, it's fine for me but we still probably use the
internal structure for it in tpm_crb driver (as tpm_tis uses internal
structure for CRB).

Do other updates look fine? I'm looking into migrating to tpm_crb driver
to use actbl3.h.

/Jarkko

> 
> > -----Original Message-----
> > From: Jarkko Sakkinen [mailto:jarkko.sakkinen@...ux.intel.com]
> > Sent: Tuesday, June 09, 2015 2:18 AM
> > To: Moore, Robert
> > Cc: Zheng, Lv; Wysocki, Rafael J; Len Brown; open list:ACPI COMPONENT
> > AR...; open list:ACPI COMPONENT AR...; open list
> > Subject: Re: [PATCH] acpi: update struct acpi_table_tpm2
> > 
> > On Mon, Jun 08, 2015 at 08:52:02PM +0000, Moore, Robert wrote:
> > > It looks like there is a change to the TCPA table also.
> > 
> > Right. I'll update that too.
> > 
> > I strongly think that the struct acpi_tpm2_control should not be in
> > actbl3.h. It is not defined in the TCG ACPI specification. It is defined
> > in
> > 
> > http://www.trustedcomputinggroup.org/resources/pc_client_platform_tpm_prof
> > ile_ptp_specification
> > 
> > FIFO control structures are internal for to the TPM subsystem and so
> > should be CRB control structures (and we have already inside tpm_crb.c).
> > 
> > The structure ended up there probably because it was combined with the
> > TPM2 table in that Microsoft specification.
> > 
> > /Jarkko
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