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From: "Winiarska, Iwona" <iwona.winiarska@intel.com>
To: "Williams, Dan J" <dan.j.williams@intel.com>,
	"gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"openbmc@lists.ozlabs.org" <openbmc@lists.ozlabs.org>
Cc: "linux-aspeed@lists.ozlabs.org" <linux-aspeed@lists.ozlabs.org>,
	"linux-doc@vger.kernel.org" <linux-doc@vger.kernel.org>,
	"jae.hyun.yoo@linux.intel.com" <jae.hyun.yoo@linux.intel.com>,
	"mchehab@kernel.org" <mchehab@kernel.org>,
	"corbet@lwn.net" <corbet@lwn.net>,
	"x86@kernel.org" <x86@kernel.org>,
	"pierre-louis.bossart@linux.intel.com"
	<pierre-louis.bossart@linux.intel.com>,
	"mingo@redhat.com" <mingo@redhat.com>,
	"linux@roeck-us.net" <linux@roeck-us.net>,
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	"robh+dt@kernel.org" <robh+dt@kernel.org>,
	"bp@alien8.de" <bp@alien8.de>,
	"Lutomirski, Andy" <luto@kernel.org>,
	"tglx@linutronix.de" <tglx@linutronix.de>,
	"andriy.shevchenko@linux.intel.com"
	<andriy.shevchenko@linux.intel.com>,
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	<linux-arm-kernel@lists.infradead.org>,
	"linux-hwmon@vger.kernel.org" <linux-hwmon@vger.kernel.org>,
	"Luck, Tony" <tony.luck@intel.com>,
	"andrew@aj.id.au" <andrew@aj.id.au>,
	"yazen.ghannam@amd.com" <yazen.ghannam@amd.com>
Subject: Re: [PATCH 00/14] Introduce PECI subsystem
Date: Thu, 15 Jul 2021 17:33:34 +0000	[thread overview]
Message-ID: <fe9a5191e401b38325aaff11365b5970034d26cc.camel@intel.com> (raw)
In-Reply-To: <3b9cfe5f728c40c473a22070029c8790b452daf4.camel@intel.com>

On Wed, 2021-07-14 at 16:51 +0000, Williams, Dan J wrote:
> 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 intention was to direct it to Greg, but I guess I didn't express
that through the mail headers.
I am expecting contributions - for example there is at least one other
major BMC vendor which also ships PECI controllers.

From my perspective, the pieces that make up a BMC are pretty loosely
connected (at least from the kernel perspective - scattered all over
the kernel tree), so I don't see how that would work in practice.

Thanks
-Iwona


> > 
> > 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%)
> > 
> 


  reply	other threads:[~2021-07-15 17:35 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 ` [PATCH 00/14] Introduce PECI subsystem Williams, Dan J
2021-07-15 17:33   ` Winiarska, Iwona [this message]
2021-07-15 19:34     ` Dan Williams

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