Changes in Kconfig

41845541 - firmware: arm_scmi: Add initial support for i.MX BBM protocol

Fri, 23 Aug 2024 09:05:18 +0000

firmware: arm_scmi: Add initial support for i.MX BBM protocoli.MX95 has a battery-backed module(BBM), which has persistent storage(GPR), an RTC, and the ON/OFF button. The System Manager(SM) firmwareuse SCMI vendor protocol(SCMI BBM) to let agent be able to use GPR, RTCand ON/OFF button.Reviewed-by: Cristian Marussi Signed-off-by: Peng Fan Message-Id: <20240823-imx95-bbm-misc-v2-v8-2-e600ed9e9271@nxp.com>Signed-off-by: Sudeep Holla List of files: /linux-6.15/drivers/firmware/arm_scmi/Kconfig

20bda12a - firmware: arm_scmi: Make VirtIO transport a standalone driver

Mon, 12 Aug 2024 17:33:39 +0000

firmware: arm_scmi: Make VirtIO transport a standalone driverMake SCMI VirtIO transport a standalone driver that can be optionallyloaded as a module.CC: Michael S. Tsirkin CC: Igor Skalkin CC: Peter Hilber Signed-off-by: Cristian Marussi Message-Id: <20240812173340.3912830-9-cristian.marussi@arm.com>Signed-off-by: Sudeep Holla List of files: /linux-6.15/drivers/firmware/arm_scmi/Kconfig

db9cc5e6 - firmware: arm_scmi: Make OPTEE transport a standalone driver

Mon, 12 Aug 2024 17:33:38 +0000

firmware: arm_scmi: Make OPTEE transport a standalone driverMake SCMI OPTEE transport a standalone driver that can be optionallyloaded as a module.CC: Etienne Carriere Signed-off-by: Cristian Marussi Message-Id: <20240812173340.3912830-8-cristian.marussi@arm.com>Signed-off-by: Sudeep Holla List of files: /linux-6.15/drivers/firmware/arm_scmi/Kconfig

a4175950 - firmware: arm_scmi: Make SMC transport a standalone driver

Mon, 12 Aug 2024 17:33:37 +0000

firmware: arm_scmi: Make SMC transport a standalone driverMake SCMI SMC transport a standalone driver that can be optionallyloaded as a module.CC: Peng Fan CC: Nikunj Kela Signed-off-by: Cristian Marussi Message-Id: <20240812173340.3912830-7-cristian.marussi@arm.com>[sudeep.holla: moved Clang Thumb2 build fix to the new makefile]Signed-off-by: Sudeep Holla List of files: /linux-6.15/drivers/firmware/arm_scmi/Kconfig

b53515fa - firmware: arm_scmi: Make MBOX transport a standalone driver

Mon, 12 Aug 2024 17:33:36 +0000

firmware: arm_scmi: Make MBOX transport a standalone driverMake SCMI mailbox transport a standalone driver that can be optionallyloaded as a module; while at it, create a dedicated subdirectory andsubmenu for SCMI Transports.Signed-off-by: Cristian Marussi Message-Id: <20240812173340.3912830-6-cristian.marussi@arm.com>Signed-off-by: Sudeep Holla List of files: /linux-6.15/drivers/firmware/arm_scmi/Kconfig

1b18d429 - firmware: arm_scmi: Add support for debug metrics at the interface

Mon, 05 Aug 2024 13:10:09 +0000

firmware: arm_scmi: Add support for debug metrics at the interfaceSince SCMI involves interaction with the entity(software, firmware and/orhardware) providing services or features, it is quite useful to trackcertain metrics(for pure debugging purposes) like how many messages weresent or received, were there any failures, what kind of failures, ..etc.Add a new optional config option for the above purpose and the initialsupport for counting such key debug metrics.Signed-off-by: Luke Parkin Reviewed-by: Cristian Marussi Tested-by: Cristian Marussi Message-Id: <20240805131013.587016-3-sudeep.holla@arm.com>Signed-off-by: Sudeep Holla List of files: /linux-6.15/drivers/firmware/arm_scmi/Kconfig

820cec12 - pmdomain: arm_scmi: Move Kconfig options to the pmdomain subsystem

Thu, 23 Nov 2023 12:08:46 +0000

pmdomain: arm_scmi: Move Kconfig options to the pmdomain subsystemThe Kconfig options belongs closer to the corresponding implementations,hence let's move them from the firmware to the pmdomain subsystem.Signed-off-by: Sudeep Holla Link: https://lore.kernel.org/r/20231123120847.2825444-1-sudeep.holla@arm.comSigned-off-by: Ulf Hansson List of files: /linux-6.15/drivers/firmware/arm_scmi/Kconfig

2af23ceb - pmdomain: arm: Add the SCMI performance domain

Tue, 19 Sep 2023 12:16:05 +0000

pmdomain: arm: Add the SCMI performance domainTo enable support for performance scaling (DVFS) for generic devices withthe SCMI performance protocol, let's add an SCMI performance domain. Thisis being modelled as a genpd provider, with support for performance scalingthrough genpd's ->set_performance_state() callback.Note that, this adds the initial support that allows consumer drivers forattached devices, to vote for a new performance state via calling thedev_pm_genpd_set_performance_state(). However, this should be avoided asit's in most cases preferred to use the OPP library to vote for a new OPPinstead. The support using the OPP library isn't part of this change, butneeds to be implemented from subsequent changes.Signed-off-by: Ulf Hansson Link: https://lore.kernel.org/r/20230919121605.7304-1-ulf.hansson@linaro.orgSigned-off-by: Sudeep Holla List of files: /linux-6.15/drivers/firmware/arm_scmi/Kconfig

9c54633e - firmware: arm_scmi: Add the raw mode co-existence support

Wed, 18 Jan 2023 12:14:25 +0000

firmware: arm_scmi: Add the raw mode co-existence supportWhen the raw support is enabled and configured in co-existence mode thenormal SCMI drivers are allowed to register with the SCMI core andoperate as usual alongside the raw operations.SCMI normal and raw messages will be kept segregated from each other,but only at the transaction level. Any further possible interference atthe protocol layer will have instead to be handled by the user to attainreliable results while using the raw transactions.Signed-off-by: Cristian Marussi Tested-by: Florian Fainelli Tested-by: Vincent Guittot Link: https://lore.kernel.org/r/20230118121426.492864-17-cristian.marussi@arm.comSigned-off-by: Sudeep Holla List of files: /linux-6.15/drivers/firmware/arm_scmi/Kconfig

3c3d818a - firmware: arm_scmi: Add core raw transmission support

Wed, 18 Jan 2023 12:14:21 +0000

firmware: arm_scmi: Add core raw transmission supportAdd SCMI raw mode support which exposes a userspace interface to allow forbare SCMI command injection and snooping from userspace.Signed-off-by: Cristian Marussi Tested-by: Florian Fainelli Tested-by: Vincent Guittot Link: https://lore.kernel.org/r/20230118121426.492864-13-cristian.marussi@arm.comSigned-off-by: Sudeep Holla List of files: /linux-6.15/drivers/firmware/arm_scmi/Kconfig

c3d4aed7 - firmware: arm_scmi: Populate a common SCMI debugfs root

Wed, 18 Jan 2023 12:14:19 +0000

firmware: arm_scmi: Populate a common SCMI debugfs rootCreate a common SCMI debugfs root directory and populate it with somecommon SCMI data for each discovered SCMI platform instance if SCMIdebugfs is needed by any configured SCMI facility.Signed-off-by: Cristian Marussi Tested-by: Florian Fainelli Tested-by: Vincent Guittot Link: https://lore.kernel.org/r/20230118121426.492864-11-cristian.marussi@arm.comSigned-off-by: Sudeep Holla List of files: /linux-6.15/drivers/firmware/arm_scmi/Kconfig

2c4b97fe - firmware: arm_scmi: Add SCMI System Power Control driver

Mon, 04 Jul 2022 10:19:33 +0000

firmware: arm_scmi: Add SCMI System Power Control driverAdd an SCMI System Power control driver to handle platform's requestscarried by SYSTEM_POWER_STATE_NOTIFIER notifications: such platformrequested system-wide power state transitions are handled accordingly,gracefully or forcefully, depending on the notifications' message flags.Graceful requests are relayed to userspace using the same Kernel API usedto handle ACPI Shutdown bus events.Link: https://lore.kernel.org/r/20220704101933.2981635-5-cristian.marussi@arm.comReviewed-by: Greg Kroah-Hartman Signed-off-by: Cristian Marussi Signed-off-by: Sudeep Holla List of files: /linux-6.15/drivers/firmware/arm_scmi/Kconfig

5e114ad9 - firmware: arm_scmi: Support optee shared memory in the optee transport

Mon, 25 Apr 2022 08:51:27 +0000

firmware: arm_scmi: Support optee shared memory in the optee transportAdd support for TEE shared memory in optee scmi transport. When usingtee shared memory, scmi optee transport manages SCMI messages usingmsg protocol(from msg.c) in shared memory, whereas smt(from shmem.c)protocol is used with static IOMEM based shared buffers.Link: https://lore.kernel.org/r/20220425085127.2009-1-etienne.carriere@linaro.orgReviewed-by: Cristian Marussi Signed-off-by: Etienne Carriere Signed-off-by: Sudeep Holla List of files: /linux-6.15/drivers/firmware/arm_scmi/Kconfig

5a3b7185 - firmware: arm_scmi: Add atomic mode support to virtio transport

Thu, 17 Feb 2022 13:12:29 +0000

firmware: arm_scmi: Add atomic mode support to virtio transportAdd support for .mark_txdone and .poll_done transport operations to SCMIVirtIO transport as pre-requisites to enable atomic operations.Add a Kernel configuration option to enable SCMI VirtIO transport pollingand atomic mode for selected SCMI transactions while leaving it defaultdisabled.Link: https://lore.kernel.org/r/20220217131234.50328-4-cristian.marussi@arm.comCc: "Michael S. Tsirkin" Cc: Igor Skalkin Cc: Peter Hilber Cc: virtualization@lists.linux-foundation.orgSigned-off-by: Cristian Marussi Signed-off-by: Sudeep Holla List of files: /linux-6.15/drivers/firmware/arm_scmi/Kconfig

0bfdca8a - firmware: arm_scmi: Add atomic mode support to smc transport

Mon, 20 Dec 2021 19:56:42 +0000

firmware: arm_scmi: Add atomic mode support to smc transportAdd a Kernel configuration option to enable SCMI SMC transport atomicmode operation for selected SCMI transactions and leave it as defaultdisabled.Substitute mutex usages with busy-waiting and declare smc transport as.atomic_enabled if such Kernel configuration option is enabled.Link: https://lore.kernel.org/r/20211220195646.44498-8-cristian.marussi@arm.comSigned-off-by: Cristian Marussi Signed-off-by: Sudeep Holla List of files: /linux-6.15/drivers/firmware/arm_scmi/Kconfig

530897ec - firmware: arm_scmi: Make virtio Version_1 compliance optional

Mon, 15 Nov 2021 10:29:10 +0000

firmware: arm_scmi: Make virtio Version_1 compliance optionalIntroduce a compilation option to disable strict enforcement of complianceagainst VirtIO Version_1 backends, so as to allow to support also LegacyVirtIO devices implementations.Link: https://lore.kernel.org/r/20211115102910.7639-1-cristian.marussi@arm.comSigned-off-by: Cristian Marussi Signed-off-by: Sudeep Holla List of files: /linux-6.15/drivers/firmware/arm_scmi/Kconfig

5f90f189 - firmware: arm_scmi: Add optee transport

Thu, 28 Oct 2021 14:00:09 +0000

firmware: arm_scmi: Add optee transportAdd a new transport channel to the SCMI firmware interface driver forSCMI message exchange based on optee transport channel. The opteetransport is realized by connecting and invoking OP-TEE SCMI serviceinterface PTA.Optee transport support (CONFIG_ARM_SCMI_TRANSPORT_OPTEE) is defaultenabled when optee driver (CONFIG_OPTEE) is enabled. Effective opteetransport is setup upon OP-TEE SCMI service discovery at opteedevice initialization. For this SCMI UUID is registered to the opteebus for probing. This is done from the link_supplier operator of theSCMI optee transport.The optee transport can use a statically defined shared memory inwhich case SCMI device tree node defines it using an "arm,scmi-shmem"compatible phandle through property shmem. Alternatively, optee transportallocates the shared memory buffer from the optee driver when no shmemproperty is defined.The protocol used to exchange SCMI message over that shared memory isnegotiated between optee transport driver and the OP-TEE service throughcapabilities exchange.OP-TEE SCMI service is integrated in OP-TEE since its release tag 3.13.0.The service interface is published in [1].Link: [1] https://github.com/OP-TEE/optee_os/blob/3.13.0/lib/libutee/include/pta_scmi_client.hLink: https://lore.kernel.org/r/20211028140009.23331-2-etienne.carriere@linaro.orgCc: Cristian Marussi Cc: Sudeep Holla Reviewed-by: Cristian Marussi Signed-off-by: Etienne Carriere Signed-off-by: Sudeep Holla List of files: /linux-6.15/drivers/firmware/arm_scmi/Kconfig

c90521a0 - firmware: arm_scmi: Fix virtio transport Kconfig dependency

Mon, 16 Aug 2021 14:16:09 +0000

firmware: arm_scmi: Fix virtio transport Kconfig dependencyARM_SCMI_TRANSPORT_VIRTIO is a 'bool' Kconfig used to include support forthe SCMI virtio transport inside the core SCMI stack; a bare transportdependency attached here to this option, though, cannot be properlypropagated to the parent ARM_SCMI_PROTOCOL option and, as a result, it iscurrently possible to configure a Kernel where SCMI core is builtinand includes support for virtio while VirtIO core is =m.This allowed combination breaks linking: ARM_SCMI_PROTOCOL=y ARM_SCMI_TRANSPORT_VIRTIO=y VIRTIO=mBind the dependency in ARM_SCMI_TRANSPORT_VIRTIO to the chosen kind ofcompilation of ARM_SCMI_PROTOCOL.Link: https://lore.kernel.org/r/20210816141609.41751-1-cristian.marussi@arm.comFixes: 46abe13b5e3d ("firmware: arm_scmi: Add virtio transport")Reported-by: kernel test robot Suggested-by: Arnd Bergmann Acked-by: Arnd Bergmann Signed-off-by: Cristian Marussi Signed-off-by: Sudeep Holla List of files: /linux-6.15/drivers/firmware/arm_scmi/Kconfig

46abe13b - firmware: arm_scmi: Add virtio transport

Tue, 03 Aug 2021 13:10:24 +0000

firmware: arm_scmi: Add virtio transportThis transport enables communications with an SCMI platform through virtio;the SCMI platform will be represented by a virtio device.Implement an SCMI virtio driver according to the virtio SCMI device spec[1]. Virtio device id 32 has been reserved for the SCMI device [2].The virtio transport has one Tx channel (virtio cmdq, A2P channel) andat most one Rx channel (virtio eventq, P2A channel).The following feature bit defined in [1] is not implemented:VIRTIO_SCMI_F_SHARED_MEMORY.The number of messages which can be pending simultaneously is restrictedaccording to the virtqueue capacity negotiated at probing time.As soon as Rx channel message buffers are allocated or have been readout by the arm-scmi driver, feed them back to the virtio device.Since some virtio devices may not have the short response time exhibitedby SCMI platforms using other transports, set a generous responsetimeout.SCMI polling mode is not supported by this virtio transport since deemedmeaningless: polling mode operation is offered by the SCMI core to thosetransports that could not provide a completion interrupt on the TX path,which is never the case for virtio whose core callbacks can easily callinto core scmi_rx_callback upon messages reception.[1] https://github.com/oasis-tcs/virtio-spec/blob/master/virtio-scmi.tex[2] https://www.oasis-open.org/committees/ballot.php?id=3496Link: https://lore.kernel.org/r/20210803131024.40280-16-cristian.marussi@arm.comCc: "Michael S. Tsirkin" Cc: Jason Wang Co-developed-by: Peter Hilber Co-developed-by: Cristian Marussi Signed-off-by: Igor Skalkin [ Peter: Adapted patch for submission to upstream. ]Signed-off-by: Peter Hilber [ Cristian: simplified driver logic, changed link_supplier and channel available/setup logic, removed dummy callbacks ]Signed-off-by: Cristian Marussi Signed-off-by: Sudeep Holla List of files: /linux-6.15/drivers/firmware/arm_scmi/Kconfig

f301bba0 - firmware: arm_scmi: Add message passing abstractions for transports

Tue, 03 Aug 2021 13:10:20 +0000

firmware: arm_scmi: Add message passing abstractions for transportsAdd abstractions for future transports using message passing, such asvirtio. Derive the abstractions from the shared memory abstractions.Abstract the transport SDU through the opaque struct scmi_msg_payld.Also enable the transport to determine all other required informationabout the transport SDU.Link: https://lore.kernel.org/r/20210803131024.40280-12-cristian.marussi@arm.comSigned-off-by: Peter Hilber [ Cristian: Adapted to new SCMI Kconfig layout, updated Copyrights ]Signed-off-by: Cristian Marussi Signed-off-by: Sudeep Holla List of files: /linux-6.15/drivers/firmware/arm_scmi/Kconfig