| Message ID | 20210712220447.957418-1-iwona.winiarska@intel.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | Introduce PECI subsystem | expand |
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%) >
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%) > > >
On Thu, Jul 15, 2021 at 10:33 AM Winiarska, Iwona <iwona.winiarska@intel.com> wrote: > > 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. Usually something like a "Hey Greg, please consider applying..." in the cover letter lets people know who the upstream path is for the series. > I am expecting contributions - for example there is at least one other > major BMC vendor which also ships PECI controllers. You're expecting to take patches from them and you'll forward them to Greg, or they'll go to Greg directly? > > 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. No worries, Greg continues to scale more than other mere mortals for these kinds of things. I was more asking because it was not clear from these patches, nor MAINTAINERS, and it's healthy for Linux to grow new patch wranglers from time to time.
Note: All changes to arch/x86 are contained within patches 01-02. 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%)