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From: "Williams, Dan J" <dan.j.williams@intel.com>
To: "Winiarska, Iwona" <iwona.winiarska@intel.com>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"openbmc@lists.ozlabs.org" <openbmc@lists.ozlabs.org>
Cc: "corbet@lwn.net" <corbet@lwn.net>,
	"jae.hyun.yoo@linux.intel.com" <jae.hyun.yoo@linux.intel.com>,
	"linux-hwmon@vger.kernel.org" <linux-hwmon@vger.kernel.org>,
	"andrew@aj.id.au" <andrew@aj.id.au>,
	"Luck, Tony" <tony.luck@intel.com>,
	"Lutomirski, Andy" <luto@kernel.org>,
	"andriy.shevchenko@linux.intel.com" 
	<andriy.shevchenko@linux.intel.com>,
	"mchehab@kernel.org" <mchehab@kernel.org>,
	"jdelvare@suse.com" <jdelvare@suse.com>,
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	<linux-arm-kernel@lists.infradead.org>,
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	<pierre-louis.bossart@linux.intel.com>,
	"x86@kernel.org" <x86@kernel.org>, "bp@alien8.de" <bp@alien8.de>
Subject: Re: [PATCH 00/14] Introduce PECI subsystem
Date: Wed, 14 Jul 2021 16:51:27 +0000	[thread overview]
Message-ID: <3b9cfe5f728c40c473a22070029c8790b452daf4.camel@intel.com> (raw)
In-Reply-To: <20210712220447.957418-1-iwona.winiarska@intel.com>

On Tue, 2021-07-13 at 00:04 +0200, Iwona Winiarska wrote:
> Note: All changes to arch/x86 are contained within patches 01-02.

Hi Iwona,

One meta question first, who is this submission "To:"? Is there an
existing upstream maintainer path for OpenBMC changes? Are you
expecting contributions to this subsystem from others? While Greg
sometimes ends up as default maintainer for new stuff, I wonder if
someone from the OpenBMC commnuity should step up to fill this role?

> 
> The Platform Environment Control Interface (PECI) is a communication
> interface between Intel processors and management controllers (e.g.
> Baseboard Management Controller, BMC).
> 
> This series adds a PECI subsystem and introduces drivers which run in
> the Linux instance on the management controller (not the main Intel
> processor) and is intended to be used by the OpenBMC [1], a Linux
> distribution for BMC devices.
> The information exposed over PECI (like processor and DIMM
> temperature) refers to the Intel processor and can be consumed by
> daemons running on the BMC to, for example, display the processor
> temperature in its web interface.
> 
> The PECI bus is collection of code that provides interface support
> between PECI devices (that actually represent processors) and PECI
> controllers (such as the "peci-aspeed" controller) that allow to
> access physical PECI interface. PECI devices are bound to PECI
> drivers that provides access to PECI services. This series introduces
> a generic "peci-cpu" driver that exposes hardware monitoring
> "cputemp"
> and "dimmtemp" using the auxiliary bus.
> 
> Exposing "raw" PECI to userspace, either to write userspace drivers
> or
> for debug/testing purpose was left out of this series to encourage
> writing kernel drivers instead, but may be pursued in the future.
> 
> Introducing PECI to upstream Linux was already attempted before [2].
> Since it's been over a year since last revision, and the series
> changed quite a bit in the meantime, I've decided to start from v1.
> 
> I would also like to give credit to everyone who helped me with
> different aspects of preliminary review:
> - Pierre-Louis Bossart,
> - Tony Luck, 
> - Andy Shevchenko,
> - Dave Hansen.
> 
> [1] https://github.com/openbmc/openbmc
> [2] 
> https://lore.kernel.org/openbmc/20191211194624.2872-1-jae.hyun.yoo@linux.intel.com/
> 
> Iwona Winiarska (12):
>   x86/cpu: Move intel-family to arch-independent headers
>   x86/cpu: Extract cpuid helpers to arch-independent
>   dt-bindings: Add generic bindings for PECI
>   dt-bindings: Add bindings for peci-aspeed
>   ARM: dts: aspeed: Add PECI controller nodes
>   peci: Add core infrastructure
>   peci: Add device detection
>   peci: Add support for PECI device drivers
>   peci: Add peci-cpu driver
>   hwmon: peci: Add cputemp driver
>   hwmon: peci: Add dimmtemp driver
>   docs: Add PECI documentation
> 
> Jae Hyun Yoo (2):
>   peci: Add peci-aspeed controller driver
>   docs: hwmon: Document PECI drivers
> 
>  .../devicetree/bindings/peci/peci-aspeed.yaml | 111 ++++
>  .../bindings/peci/peci-controller.yaml        |  28 +
>  Documentation/hwmon/index.rst                 |   2 +
>  Documentation/hwmon/peci-cputemp.rst          |  93 ++++
>  Documentation/hwmon/peci-dimmtemp.rst         |  58 ++
>  Documentation/index.rst                       |   1 +
>  Documentation/peci/index.rst                  |  16 +
>  Documentation/peci/peci.rst                   |  48 ++
>  MAINTAINERS                                   |  32 ++
>  arch/arm/boot/dts/aspeed-g4.dtsi              |  14 +
>  arch/arm/boot/dts/aspeed-g5.dtsi              |  14 +
>  arch/arm/boot/dts/aspeed-g6.dtsi              |  14 +
>  arch/x86/Kconfig                              |   1 +
>  arch/x86/include/asm/cpu.h                    |   3 -
>  arch/x86/include/asm/intel-family.h           | 141 +----
>  arch/x86/include/asm/microcode.h              |   2 +-
>  arch/x86/kvm/cpuid.h                          |   3 +-
>  arch/x86/lib/Makefile                         |   2 +-
>  drivers/Kconfig                               |   3 +
>  drivers/Makefile                              |   1 +
>  drivers/edac/mce_amd.c                        |   3 +-
>  drivers/hwmon/Kconfig                         |   2 +
>  drivers/hwmon/Makefile                        |   1 +
>  drivers/hwmon/peci/Kconfig                    |  31 ++
>  drivers/hwmon/peci/Makefile                   |   7 +
>  drivers/hwmon/peci/common.h                   |  46 ++
>  drivers/hwmon/peci/cputemp.c                  | 503
> +++++++++++++++++
>  drivers/hwmon/peci/dimmtemp.c                 | 508
> ++++++++++++++++++
>  drivers/peci/Kconfig                          |  36 ++
>  drivers/peci/Makefile                         |  10 +
>  drivers/peci/controller/Kconfig               |  12 +
>  drivers/peci/controller/Makefile              |   3 +
>  drivers/peci/controller/peci-aspeed.c         | 501
> +++++++++++++++++
>  drivers/peci/core.c                           | 224 ++++++++
>  drivers/peci/cpu.c                            | 347 ++++++++++++
>  drivers/peci/device.c                         | 211 ++++++++
>  drivers/peci/internal.h                       | 137 +++++
>  drivers/peci/request.c                        | 502
> +++++++++++++++++
>  drivers/peci/sysfs.c                          |  82 +++
>  include/linux/peci-cpu.h                      |  38 ++
>  include/linux/peci.h                          |  93 ++++
>  include/linux/x86/cpu.h                       |   9 +
>  include/linux/x86/intel-family.h              | 146 +++++
>  lib/Kconfig                                   |   5 +
>  lib/Makefile                                  |   2 +
>  lib/x86/Makefile                              |   3 +
>  {arch/x86/lib => lib/x86}/cpu.c               |   2 +-
>  47 files changed, 3902 insertions(+), 149 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/peci/peci-
> aspeed.yaml
>  create mode 100644 Documentation/devicetree/bindings/peci/peci-
> controller.yaml
>  create mode 100644 Documentation/hwmon/peci-cputemp.rst
>  create mode 100644 Documentation/hwmon/peci-dimmtemp.rst
>  create mode 100644 Documentation/peci/index.rst
>  create mode 100644 Documentation/peci/peci.rst
>  create mode 100644 drivers/hwmon/peci/Kconfig
>  create mode 100644 drivers/hwmon/peci/Makefile
>  create mode 100644 drivers/hwmon/peci/common.h
>  create mode 100644 drivers/hwmon/peci/cputemp.c
>  create mode 100644 drivers/hwmon/peci/dimmtemp.c
>  create mode 100644 drivers/peci/Kconfig
>  create mode 100644 drivers/peci/Makefile
>  create mode 100644 drivers/peci/controller/Kconfig
>  create mode 100644 drivers/peci/controller/Makefile
>  create mode 100644 drivers/peci/controller/peci-aspeed.c
>  create mode 100644 drivers/peci/core.c
>  create mode 100644 drivers/peci/cpu.c
>  create mode 100644 drivers/peci/device.c
>  create mode 100644 drivers/peci/internal.h
>  create mode 100644 drivers/peci/request.c
>  create mode 100644 drivers/peci/sysfs.c
>  create mode 100644 include/linux/peci-cpu.h
>  create mode 100644 include/linux/peci.h
>  create mode 100644 include/linux/x86/cpu.h
>  create mode 100644 include/linux/x86/intel-family.h
>  create mode 100644 lib/x86/Makefile
>  rename {arch/x86/lib => lib/x86}/cpu.c (95%)
> 


  parent reply	other threads:[~2021-07-14 16:51 UTC|newest]

Thread overview: 72+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-12 22:04 Iwona Winiarska
2021-07-12 22:04 ` [PATCH 01/14] x86/cpu: Move intel-family to arch-independent headers Iwona Winiarska
2021-07-14 16:54   ` Williams, Dan J
2021-07-15 16:47     ` Winiarska, Iwona
2021-07-15 18:13       ` Dan Williams
2021-07-15 18:29         ` Luck, Tony
2021-07-12 22:04 ` [PATCH 02/14] x86/cpu: Extract cpuid helpers to arch-independent Iwona Winiarska
2021-07-14 16:58   ` Williams, Dan J
2021-07-15 16:51     ` Winiarska, Iwona
2021-07-15 16:58       ` Winiarska, Iwona
2021-07-12 22:04 ` [PATCH 03/14] dt-bindings: Add generic bindings for PECI Iwona Winiarska
2021-07-12 22:04 ` [PATCH 04/14] dt-bindings: Add bindings for peci-aspeed Iwona Winiarska
2021-07-15 16:28   ` Rob Herring
2021-07-16 21:22     ` Winiarska, Iwona
2021-07-12 22:04 ` [PATCH 05/14] ARM: dts: aspeed: Add PECI controller nodes Iwona Winiarska
2021-07-12 22:04 ` [PATCH 06/14] peci: Add core infrastructure Iwona Winiarska
2021-07-14 17:19   ` Williams, Dan J
2021-07-16 21:08     ` Winiarska, Iwona
2021-07-16 21:50       ` Dan Williams
2021-07-17  6:12         ` gregkh
2021-07-17 20:54           ` Dan Williams
2021-07-12 22:04 ` [PATCH 07/14] peci: Add peci-aspeed controller driver Iwona Winiarska
2021-07-13  5:02   ` Randy Dunlap
2021-07-15 16:42     ` Winiarska, Iwona
2021-07-14 17:39   ` Williams, Dan J
2021-07-16 21:17     ` Winiarska, Iwona
2021-07-27  8:49   ` Zev Weiss
2021-07-29 14:03     ` Winiarska, Iwona
2021-07-29 18:15       ` Zev Weiss
2021-07-12 22:04 ` [PATCH 08/14] peci: Add device detection Iwona Winiarska
2021-07-14 21:05   ` Williams, Dan J
2021-07-16 21:20     ` Winiarska, Iwona
2021-07-27 17:49   ` Zev Weiss
2021-07-29 18:55     ` Winiarska, Iwona
2021-07-29 20:50       ` Zev Weiss
2021-07-30 20:10         ` Winiarska, Iwona
2021-07-12 22:04 ` [PATCH 09/14] peci: Add support for PECI device drivers Iwona Winiarska
2021-07-27 20:10   ` Zev Weiss
2021-07-27 21:23     ` Guenter Roeck
2021-07-29 21:17     ` Winiarska, Iwona
2021-07-29 23:22       ` Zev Weiss
2021-07-30 20:13         ` Winiarska, Iwona
2021-07-12 22:04 ` [PATCH 10/14] peci: Add peci-cpu driver Iwona Winiarska
2021-07-27 11:16   ` David Müller (ELSOFT AG)
2021-07-30 20:14     ` Winiarska, Iwona
2021-07-27 21:33   ` Zev Weiss
2021-07-30 21:21     ` Winiarska, Iwona
2021-07-12 22:04 ` [PATCH 11/14] hwmon: peci: Add cputemp driver Iwona Winiarska
2021-07-15 17:45   ` Guenter Roeck
2021-07-19 20:12     ` Winiarska, Iwona
2021-07-19 20:35       ` Guenter Roeck
2021-07-27  7:06   ` Zev Weiss
2021-07-30 21:51     ` Winiarska, Iwona
2021-07-30 22:04       ` Guenter Roeck
2021-07-12 22:04 ` [PATCH 12/14] hwmon: peci: Add dimmtemp driver Iwona Winiarska
2021-07-15 17:56   ` Guenter Roeck
2021-07-19 20:31     ` Winiarska, Iwona
2021-07-19 20:36       ` Guenter Roeck
2021-07-26 22:08   ` Zev Weiss
2021-07-30 22:48     ` Winiarska, Iwona
2021-07-12 22:04 ` [PATCH 13/14] docs: hwmon: Document PECI drivers Iwona Winiarska
2021-07-27 22:58   ` Zev Weiss
2021-07-28  0:49     ` Guenter Roeck
2021-08-02 11:39       ` Winiarska, Iwona
2021-08-02 11:37     ` Winiarska, Iwona
2021-08-04 17:52       ` Zev Weiss
2021-08-04 18:05         ` Guenter Roeck
2021-08-05 21:42           ` Winiarska, Iwona
2021-07-12 22:04 ` [PATCH 14/14] docs: Add PECI documentation Iwona Winiarska
2021-07-14 16:51 ` Williams, Dan J [this message]
2021-07-15 17:33   ` [PATCH 00/14] Introduce PECI subsystem Winiarska, Iwona
2021-07-15 19:34     ` Dan Williams

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