From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5B484C433F5 for ; Tue, 1 Feb 2022 08:45:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235679AbiBAIpM (ORCPT ); Tue, 1 Feb 2022 03:45:12 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59740 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233828AbiBAIpK (ORCPT ); Tue, 1 Feb 2022 03:45:10 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C42EDC061714; Tue, 1 Feb 2022 00:45:10 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 85327B82D1F; Tue, 1 Feb 2022 08:45:09 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C633DC340EB; Tue, 1 Feb 2022 08:45:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1643705108; bh=gFhm/BFBQlv4U+vaVcLdvui/cZ1mokaM8Hgc2Bg0WOs=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=skLRUmJfhkZD8O4AVT7dQxBhkomnIsz8pHNGA8O3h24Dn797AcCLipDtccau6Nwq8 VAzOp8i9CbJV9JuXxvdNi+ae5R+AVKwSg/yBF/Ns+EEsw/oKy+i2v1kTrgJOeDDE0K 3Lus+HTBOpMR/aG8EFQeI6fxc/XcMR30iIoJwnFE= Date: Tue, 1 Feb 2022 09:45:05 +0100 From: Greg KH To: "David E. Box" Cc: hdegoede@redhat.com, andriy.shevchenko@linux.intel.com, srinivas.pandruvada@intel.com, mgross@linux.intel.com, linux-kernel@vger.kernel.org, platform-driver-x86@vger.kernel.org, Mark Gross Subject: Re: [PATCH 1/3] platform/x86: Add Intel Software Defined Silicon driver Message-ID: References: <20220201030424.1068816-1-david.e.box@linux.intel.com> <20220201030424.1068816-2-david.e.box@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220201030424.1068816-2-david.e.box@linux.intel.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jan 31, 2022 at 07:04:22PM -0800, David E. Box wrote: > Intel Software Defined Silicon (SDSi) is a post manufacturing mechanism for > activating additional silicon features. Features are enabled through a > license activation process. The SDSi driver provides a per socket, sysfs > attribute interface for applications to perform 3 main provisioning > functions: > > 1. Provision an Authentication Key Certificate (AKC), a key written to > internal NVRAM that is used to authenticate a capability specific > activation payload. > > 2. Provision a Capability Activation Payload (CAP), a token authenticated > using the AKC and applied to the CPU configuration to activate a new > feature. > > 3. Read the SDSi State Certificate, containing the CPU configuration > state. > > The operations perform function specific mailbox commands that forward the > requests to SDSi hardware to perform authentication of the payloads and > enable the silicon configuration (to be made available after power > cycling). > > The SDSi device itself is enumerated as an auxiliary device from the > intel_vsec driver and as such has a build dependency on CONFIG_INTEL_VSEC. > > Link: https://github.com/intel/intel-sdsi > Signed-off-by: David E. Box > Reviewed-by: Mark Gross > --- > .../ABI/testing/sysfs-driver-intel_sdsi | 77 +++ > MAINTAINERS | 5 + > drivers/platform/x86/intel/Kconfig | 12 + > drivers/platform/x86/intel/Makefile | 2 + > drivers/platform/x86/intel/sdsi.c | 571 ++++++++++++++++++ > drivers/platform/x86/intel/vsec.c | 12 +- > 6 files changed, 678 insertions(+), 1 deletion(-) > create mode 100644 Documentation/ABI/testing/sysfs-driver-intel_sdsi > create mode 100644 drivers/platform/x86/intel/sdsi.c > > diff --git a/Documentation/ABI/testing/sysfs-driver-intel_sdsi b/Documentation/ABI/testing/sysfs-driver-intel_sdsi > new file mode 100644 > index 000000000000..126978647e9b > --- /dev/null > +++ b/Documentation/ABI/testing/sysfs-driver-intel_sdsi > @@ -0,0 +1,77 @@ > +What: /sys/bus/auxiliary/devices/intel_vsec.sdsi.X > +Date: Dec 2021 > +KernelVersion: 5.17 5.17 merge window is long gone now. Please be more careful.